diff options
Diffstat (limited to 'drivers/net/ethernet/rocker')
| -rw-r--r-- | drivers/net/ethernet/rocker/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker.c | 5503 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker.h | 583 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker_hw.h | 467 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker_main.c | 2909 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker_ofdpa.c | 2958 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker_tlv.c | 53 | ||||
| -rw-r--r-- | drivers/net/ethernet/rocker/rocker_tlv.h | 201 |
8 files changed, 6721 insertions, 5954 deletions
diff --git a/drivers/net/ethernet/rocker/Makefile b/drivers/net/ethernet/rocker/Makefile index f85fb12f3..faa36acee 100644 --- a/drivers/net/ethernet/rocker/Makefile +++ b/drivers/net/ethernet/rocker/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_ROCKER) += rocker.o +rocker-y := rocker_main.o rocker_tlv.o rocker_ofdpa.o diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c deleted file mode 100644 index f39e7198e..000000000 --- a/drivers/net/ethernet/rocker/rocker.c +++ /dev/null @@ -1,5503 +0,0 @@ -/* - * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver - * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us> - * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/interrupt.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/spinlock.h> -#include <linux/hashtable.h> -#include <linux/crc32.h> -#include <linux/sort.h> -#include <linux/random.h> -#include <linux/netdevice.h> -#include <linux/inetdevice.h> -#include <linux/skbuff.h> -#include <linux/socket.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/if_ether.h> -#include <linux/if_vlan.h> -#include <linux/if_bridge.h> -#include <linux/bitops.h> -#include <linux/ctype.h> -#include <net/switchdev.h> -#include <net/rtnetlink.h> -#include <net/ip_fib.h> -#include <net/netevent.h> -#include <net/arp.h> -#include <linux/io-64-nonatomic-lo-hi.h> -#include <generated/utsrelease.h> - -#include "rocker.h" - -static const char rocker_driver_name[] = "rocker"; - -static const struct pci_device_id rocker_pci_id_table[] = { - {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, - {0, } -}; - -struct rocker_flow_tbl_key { - u32 priority; - enum rocker_of_dpa_table_id tbl_id; - union { - struct { - u32 in_pport; - u32 in_pport_mask; - enum rocker_of_dpa_table_id goto_tbl; - } ig_port; - struct { - u32 in_pport; - __be16 vlan_id; - __be16 vlan_id_mask; - enum rocker_of_dpa_table_id goto_tbl; - bool untagged; - __be16 new_vlan_id; - } vlan; - struct { - u32 in_pport; - u32 in_pport_mask; - __be16 eth_type; - u8 eth_dst[ETH_ALEN]; - u8 eth_dst_mask[ETH_ALEN]; - __be16 vlan_id; - __be16 vlan_id_mask; - enum rocker_of_dpa_table_id goto_tbl; - bool copy_to_cpu; - } term_mac; - struct { - __be16 eth_type; - __be32 dst4; - __be32 dst4_mask; - enum rocker_of_dpa_table_id goto_tbl; - u32 group_id; - } ucast_routing; - struct { - u8 eth_dst[ETH_ALEN]; - u8 eth_dst_mask[ETH_ALEN]; - int has_eth_dst; - int has_eth_dst_mask; - __be16 vlan_id; - u32 tunnel_id; - enum rocker_of_dpa_table_id goto_tbl; - u32 group_id; - bool copy_to_cpu; - } bridge; - struct { - u32 in_pport; - u32 in_pport_mask; - u8 eth_src[ETH_ALEN]; - u8 eth_src_mask[ETH_ALEN]; - u8 eth_dst[ETH_ALEN]; - u8 eth_dst_mask[ETH_ALEN]; - __be16 eth_type; - __be16 vlan_id; - __be16 vlan_id_mask; - u8 ip_proto; - u8 ip_proto_mask; - u8 ip_tos; - u8 ip_tos_mask; - u32 group_id; - } acl; - }; -}; - -struct rocker_flow_tbl_entry { - struct hlist_node entry; - u32 cmd; - u64 cookie; - struct rocker_flow_tbl_key key; - size_t key_len; - u32 key_crc32; /* key */ -}; - -struct rocker_group_tbl_entry { - struct hlist_node entry; - u32 cmd; - u32 group_id; /* key */ - u16 group_count; - u32 *group_ids; - union { - struct { - u8 pop_vlan; - } l2_interface; - struct { - u8 eth_src[ETH_ALEN]; - u8 eth_dst[ETH_ALEN]; - __be16 vlan_id; - u32 group_id; - } l2_rewrite; - struct { - u8 eth_src[ETH_ALEN]; - u8 eth_dst[ETH_ALEN]; - __be16 vlan_id; - bool ttl_check; - u32 group_id; - } l3_unicast; - }; -}; - -struct rocker_fdb_tbl_entry { - struct hlist_node entry; - u32 key_crc32; /* key */ - bool learned; - unsigned long touched; - struct rocker_fdb_tbl_key { - struct rocker_port *rocker_port; - u8 addr[ETH_ALEN]; - __be16 vlan_id; - } key; -}; - -struct rocker_internal_vlan_tbl_entry { - struct hlist_node entry; - int ifindex; /* key */ - u32 ref_count; - __be16 vlan_id; -}; - -struct rocker_neigh_tbl_entry { - struct hlist_node entry; - __be32 ip_addr; /* key */ - struct net_device *dev; - u32 ref_count; - u32 index; - u8 eth_dst[ETH_ALEN]; - bool ttl_check; -}; - -struct rocker_desc_info { - char *data; /* mapped */ - size_t data_size; - size_t tlv_size; - struct rocker_desc *desc; - dma_addr_t mapaddr; -}; - -struct rocker_dma_ring_info { - size_t size; - u32 head; - u32 tail; - struct rocker_desc *desc; /* mapped */ - dma_addr_t mapaddr; - struct rocker_desc_info *desc_info; - unsigned int type; -}; - -struct rocker; - -enum { - ROCKER_CTRL_LINK_LOCAL_MCAST, - ROCKER_CTRL_LOCAL_ARP, - ROCKER_CTRL_IPV4_MCAST, - ROCKER_CTRL_IPV6_MCAST, - ROCKER_CTRL_DFLT_BRIDGING, - ROCKER_CTRL_DFLT_OVS, - ROCKER_CTRL_MAX, -}; - -#define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00 -#define ROCKER_N_INTERNAL_VLANS 255 -#define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) -#define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS) - -struct rocker_port { - struct net_device *dev; - struct net_device *bridge_dev; - struct rocker *rocker; - unsigned int port_number; - u32 pport; - __be16 internal_vlan_id; - int stp_state; - u32 brport_flags; - unsigned long ageing_time; - bool ctrls[ROCKER_CTRL_MAX]; - unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN]; - struct napi_struct napi_tx; - struct napi_struct napi_rx; - struct rocker_dma_ring_info tx_ring; - struct rocker_dma_ring_info rx_ring; -}; - -struct rocker { - struct pci_dev *pdev; - u8 __iomem *hw_addr; - struct msix_entry *msix_entries; - unsigned int port_count; - struct rocker_port **ports; - struct { - u64 id; - } hw; - unsigned long ageing_time; - spinlock_t cmd_ring_lock; /* for cmd ring accesses */ - struct rocker_dma_ring_info cmd_ring; - struct rocker_dma_ring_info event_ring; - DECLARE_HASHTABLE(flow_tbl, 16); - spinlock_t flow_tbl_lock; /* for flow tbl accesses */ - u64 flow_tbl_next_cookie; - DECLARE_HASHTABLE(group_tbl, 16); - spinlock_t group_tbl_lock; /* for group tbl accesses */ - struct timer_list fdb_cleanup_timer; - DECLARE_HASHTABLE(fdb_tbl, 16); - spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */ - unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN]; - DECLARE_HASHTABLE(internal_vlan_tbl, 8); - spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */ - DECLARE_HASHTABLE(neigh_tbl, 16); - spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */ - u32 neigh_tbl_next_index; -}; - -static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; -static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; -static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; -static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 }; -static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; -static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 }; -static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 }; -static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 }; -static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }; - -/* Rocker priority levels for flow table entries. Higher - * priority match takes precedence over lower priority match. - */ - -enum { - ROCKER_PRIORITY_UNKNOWN = 0, - ROCKER_PRIORITY_IG_PORT = 1, - ROCKER_PRIORITY_VLAN = 1, - ROCKER_PRIORITY_TERM_MAC_UCAST = 0, - ROCKER_PRIORITY_TERM_MAC_MCAST = 1, - ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1, - ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2, - ROCKER_PRIORITY_BRIDGING_VLAN = 3, - ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1, - ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2, - ROCKER_PRIORITY_BRIDGING_TENANT = 3, - ROCKER_PRIORITY_ACL_CTRL = 3, - ROCKER_PRIORITY_ACL_NORMAL = 2, - ROCKER_PRIORITY_ACL_DFLT = 1, -}; - -static bool rocker_vlan_id_is_internal(__be16 vlan_id) -{ - u16 start = ROCKER_INTERNAL_VLAN_ID_BASE; - u16 end = 0xffe; - u16 _vlan_id = ntohs(vlan_id); - - return (_vlan_id >= start && _vlan_id <= end); -} - -static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port, - u16 vid, bool *pop_vlan) -{ - __be16 vlan_id; - - if (pop_vlan) - *pop_vlan = false; - vlan_id = htons(vid); - if (!vlan_id) { - vlan_id = rocker_port->internal_vlan_id; - if (pop_vlan) - *pop_vlan = true; - } - - return vlan_id; -} - -static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port, - __be16 vlan_id) -{ - if (rocker_vlan_id_is_internal(vlan_id)) - return 0; - - return ntohs(vlan_id); -} - -static bool rocker_port_is_bridged(const struct rocker_port *rocker_port) -{ - return rocker_port->bridge_dev && - netif_is_bridge_master(rocker_port->bridge_dev); -} - -static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port) -{ - return rocker_port->bridge_dev && - netif_is_ovs_master(rocker_port->bridge_dev); -} - -#define ROCKER_OP_FLAG_REMOVE BIT(0) -#define ROCKER_OP_FLAG_NOWAIT BIT(1) -#define ROCKER_OP_FLAG_LEARNED BIT(2) -#define ROCKER_OP_FLAG_REFRESH BIT(3) - -static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - size_t size) -{ - struct switchdev_trans_item *elem = NULL; - gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ? - GFP_ATOMIC : GFP_KERNEL; - - /* If in transaction prepare phase, allocate the memory - * and enqueue it on a transaction. If in transaction - * commit phase, dequeue the memory from the transaction - * rather than re-allocating the memory. The idea is the - * driver code paths for prepare and commit are identical - * so the memory allocated in the prepare phase is the - * memory used in the commit phase. - */ - - if (!trans) { - elem = kzalloc(size + sizeof(*elem), gfp_flags); - } else if (switchdev_trans_ph_prepare(trans)) { - elem = kzalloc(size + sizeof(*elem), gfp_flags); - if (!elem) - return NULL; - switchdev_trans_item_enqueue(trans, elem, kfree, elem); - } else { - elem = switchdev_trans_item_dequeue(trans); - } - - return elem ? elem + 1 : NULL; -} - -static void *rocker_port_kzalloc(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - size_t size) -{ - return __rocker_port_mem_alloc(rocker_port, trans, flags, size); -} - -static void *rocker_port_kcalloc(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - size_t n, size_t size) -{ - return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size); -} - -static void rocker_port_kfree(struct switchdev_trans *trans, const void *mem) -{ - struct switchdev_trans_item *elem; - - /* Frees are ignored if in transaction prepare phase. The - * memory remains on the per-port list until freed in the - * commit phase. - */ - - if (switchdev_trans_ph_prepare(trans)) - return; - - elem = (struct switchdev_trans_item *) mem - 1; - kfree(elem); -} - -struct rocker_wait { - wait_queue_head_t wait; - bool done; - bool nowait; -}; - -static void rocker_wait_reset(struct rocker_wait *wait) -{ - wait->done = false; - wait->nowait = false; -} - -static void rocker_wait_init(struct rocker_wait *wait) -{ - init_waitqueue_head(&wait->wait); - rocker_wait_reset(wait); -} - -static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - int flags) -{ - struct rocker_wait *wait; - - wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait)); - if (!wait) - return NULL; - rocker_wait_init(wait); - return wait; -} - -static void rocker_wait_destroy(struct switchdev_trans *trans, - struct rocker_wait *wait) -{ - rocker_port_kfree(trans, wait); -} - -static bool rocker_wait_event_timeout(struct rocker_wait *wait, - unsigned long timeout) -{ - wait_event_timeout(wait->wait, wait->done, HZ / 10); - if (!wait->done) - return false; - return true; -} - -static void rocker_wait_wake_up(struct rocker_wait *wait) -{ - wait->done = true; - wake_up(&wait->wait); -} - -static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector) -{ - return rocker->msix_entries[vector].vector; -} - -static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port) -{ - return rocker_msix_vector(rocker_port->rocker, - ROCKER_MSIX_VEC_TX(rocker_port->port_number)); -} - -static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port) -{ - return rocker_msix_vector(rocker_port->rocker, - ROCKER_MSIX_VEC_RX(rocker_port->port_number)); -} - -#define rocker_write32(rocker, reg, val) \ - writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) -#define rocker_read32(rocker, reg) \ - readl((rocker)->hw_addr + (ROCKER_ ## reg)) -#define rocker_write64(rocker, reg, val) \ - writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) -#define rocker_read64(rocker, reg) \ - readq((rocker)->hw_addr + (ROCKER_ ## reg)) - -/***************************** - * HW basic testing functions - *****************************/ - -static int rocker_reg_test(const struct rocker *rocker) -{ - const struct pci_dev *pdev = rocker->pdev; - u64 test_reg; - u64 rnd; - - rnd = prandom_u32(); - rnd >>= 1; - rocker_write32(rocker, TEST_REG, rnd); - test_reg = rocker_read32(rocker, TEST_REG); - if (test_reg != rnd * 2) { - dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", - test_reg, rnd * 2); - return -EIO; - } - - rnd = prandom_u32(); - rnd <<= 31; - rnd |= prandom_u32(); - rocker_write64(rocker, TEST_REG64, rnd); - test_reg = rocker_read64(rocker, TEST_REG64); - if (test_reg != rnd * 2) { - dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", - test_reg, rnd * 2); - return -EIO; - } - - return 0; -} - -static int rocker_dma_test_one(const struct rocker *rocker, - struct rocker_wait *wait, u32 test_type, - dma_addr_t dma_handle, const unsigned char *buf, - const unsigned char *expect, size_t size) -{ - const struct pci_dev *pdev = rocker->pdev; - int i; - - rocker_wait_reset(wait); - rocker_write32(rocker, TEST_DMA_CTRL, test_type); - - if (!rocker_wait_event_timeout(wait, HZ / 10)) { - dev_err(&pdev->dev, "no interrupt received within a timeout\n"); - return -EIO; - } - - for (i = 0; i < size; i++) { - if (buf[i] != expect[i]) { - dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", - buf[i], i, expect[i]); - return -EIO; - } - } - return 0; -} - -#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) -#define ROCKER_TEST_DMA_FILL_PATTERN 0x96 - -static int rocker_dma_test_offset(const struct rocker *rocker, - struct rocker_wait *wait, int offset) -{ - struct pci_dev *pdev = rocker->pdev; - unsigned char *alloc; - unsigned char *buf; - unsigned char *expect; - dma_addr_t dma_handle; - int i; - int err; - - alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, - GFP_KERNEL | GFP_DMA); - if (!alloc) - return -ENOMEM; - buf = alloc + offset; - expect = buf + ROCKER_TEST_DMA_BUF_SIZE; - - dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE, - PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(pdev, dma_handle)) { - err = -EIO; - goto free_alloc; - } - - rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); - rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); - - memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); - err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, - dma_handle, buf, expect, - ROCKER_TEST_DMA_BUF_SIZE); - if (err) - goto unmap; - - memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); - err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, - dma_handle, buf, expect, - ROCKER_TEST_DMA_BUF_SIZE); - if (err) - goto unmap; - - prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); - for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) - expect[i] = ~buf[i]; - err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, - dma_handle, buf, expect, - ROCKER_TEST_DMA_BUF_SIZE); - if (err) - goto unmap; - -unmap: - pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, - PCI_DMA_BIDIRECTIONAL); -free_alloc: - kfree(alloc); - - return err; -} - -static int rocker_dma_test(const struct rocker *rocker, - struct rocker_wait *wait) -{ - int i; - int err; - - for (i = 0; i < 8; i++) { - err = rocker_dma_test_offset(rocker, wait, i); - if (err) - return err; - } - return 0; -} - -static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) -{ - struct rocker_wait *wait = dev_id; - - rocker_wait_wake_up(wait); - - return IRQ_HANDLED; -} - -static int rocker_basic_hw_test(const struct rocker *rocker) -{ - const struct pci_dev *pdev = rocker->pdev; - struct rocker_wait wait; - int err; - - err = rocker_reg_test(rocker); - if (err) { - dev_err(&pdev->dev, "reg test failed\n"); - return err; - } - - err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), - rocker_test_irq_handler, 0, - rocker_driver_name, &wait); - if (err) { - dev_err(&pdev->dev, "cannot assign test irq\n"); - return err; - } - - rocker_wait_init(&wait); - rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); - - if (!rocker_wait_event_timeout(&wait, HZ / 10)) { - dev_err(&pdev->dev, "no interrupt received within a timeout\n"); - err = -EIO; - goto free_irq; - } - - err = rocker_dma_test(rocker, &wait); - if (err) - dev_err(&pdev->dev, "dma test failed\n"); - -free_irq: - free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); - return err; -} - -/****** - * TLV - ******/ - -#define ROCKER_TLV_ALIGNTO 8U -#define ROCKER_TLV_ALIGN(len) \ - (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1)) -#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv)) - -/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) ---> - * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ - * | Header | Pad | Payload | Pad | - * | (struct rocker_tlv) | ing | | ing | - * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ - * <--------------------------- tlv->len --------------------------> - */ - -static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv, - int *remaining) -{ - int totlen = ROCKER_TLV_ALIGN(tlv->len); - - *remaining -= totlen; - return (struct rocker_tlv *) ((char *) tlv + totlen); -} - -static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining) -{ - return remaining >= (int) ROCKER_TLV_HDRLEN && - tlv->len >= ROCKER_TLV_HDRLEN && - tlv->len <= remaining; -} - -#define rocker_tlv_for_each(pos, head, len, rem) \ - for (pos = head, rem = len; \ - rocker_tlv_ok(pos, rem); \ - pos = rocker_tlv_next(pos, &(rem))) - -#define rocker_tlv_for_each_nested(pos, tlv, rem) \ - rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \ - rocker_tlv_len(tlv), rem) - -static int rocker_tlv_attr_size(int payload) -{ - return ROCKER_TLV_HDRLEN + payload; -} - -static int rocker_tlv_total_size(int payload) -{ - return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload)); -} - -static int rocker_tlv_padlen(int payload) -{ - return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload); -} - -static int rocker_tlv_type(const struct rocker_tlv *tlv) -{ - return tlv->type; -} - -static void *rocker_tlv_data(const struct rocker_tlv *tlv) -{ - return (char *) tlv + ROCKER_TLV_HDRLEN; -} - -static int rocker_tlv_len(const struct rocker_tlv *tlv) -{ - return tlv->len - ROCKER_TLV_HDRLEN; -} - -static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv) -{ - return *(u8 *) rocker_tlv_data(tlv); -} - -static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv) -{ - return *(u16 *) rocker_tlv_data(tlv); -} - -static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv) -{ - return *(__be16 *) rocker_tlv_data(tlv); -} - -static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv) -{ - return *(u32 *) rocker_tlv_data(tlv); -} - -static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv) -{ - return *(u64 *) rocker_tlv_data(tlv); -} - -static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype, - const char *buf, int buf_len) -{ - const struct rocker_tlv *tlv; - const struct rocker_tlv *head = (const struct rocker_tlv *) buf; - int rem; - - memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1)); - - rocker_tlv_for_each(tlv, head, buf_len, rem) { - u32 type = rocker_tlv_type(tlv); - - if (type > 0 && type <= maxtype) - tb[type] = tlv; - } -} - -static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype, - const struct rocker_tlv *tlv) -{ - rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv), - rocker_tlv_len(tlv)); -} - -static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype, - const struct rocker_desc_info *desc_info) -{ - rocker_tlv_parse(tb, maxtype, desc_info->data, - desc_info->desc->tlv_size); -} - -static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info) -{ - return (struct rocker_tlv *) ((char *) desc_info->data + - desc_info->tlv_size); -} - -static int rocker_tlv_put(struct rocker_desc_info *desc_info, - int attrtype, int attrlen, const void *data) -{ - int tail_room = desc_info->data_size - desc_info->tlv_size; - int total_size = rocker_tlv_total_size(attrlen); - struct rocker_tlv *tlv; - - if (unlikely(tail_room < total_size)) - return -EMSGSIZE; - - tlv = rocker_tlv_start(desc_info); - desc_info->tlv_size += total_size; - tlv->type = attrtype; - tlv->len = rocker_tlv_attr_size(attrlen); - memcpy(rocker_tlv_data(tlv), data, attrlen); - memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen)); - return 0; -} - -static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info, - int attrtype, u8 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value); -} - -static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info, - int attrtype, u16 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value); -} - -static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info, - int attrtype, __be16 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value); -} - -static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info, - int attrtype, u32 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value); -} - -static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info, - int attrtype, __be32 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value); -} - -static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info, - int attrtype, u64 value) -{ - return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value); -} - -static struct rocker_tlv * -rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype) -{ - struct rocker_tlv *start = rocker_tlv_start(desc_info); - - if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0) - return NULL; - - return start; -} - -static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info, - struct rocker_tlv *start) -{ - start->len = (char *) rocker_tlv_start(desc_info) - (char *) start; -} - -static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info, - const struct rocker_tlv *start) -{ - desc_info->tlv_size = (const char *) start - desc_info->data; -} - -/****************************************** - * DMA rings and descriptors manipulations - ******************************************/ - -static u32 __pos_inc(u32 pos, size_t limit) -{ - return ++pos == limit ? 0 : pos; -} - -static int rocker_desc_err(const struct rocker_desc_info *desc_info) -{ - int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; - - switch (err) { - case ROCKER_OK: - return 0; - case -ROCKER_ENOENT: - return -ENOENT; - case -ROCKER_ENXIO: - return -ENXIO; - case -ROCKER_ENOMEM: - return -ENOMEM; - case -ROCKER_EEXIST: - return -EEXIST; - case -ROCKER_EINVAL: - return -EINVAL; - case -ROCKER_EMSGSIZE: - return -EMSGSIZE; - case -ROCKER_ENOTSUP: - return -EOPNOTSUPP; - case -ROCKER_ENOBUFS: - return -ENOBUFS; - } - - return -EINVAL; -} - -static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info) -{ - desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; -} - -static bool rocker_desc_gen(const struct rocker_desc_info *desc_info) -{ - u32 comp_err = desc_info->desc->comp_err; - - return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; -} - -static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info) -{ - return (void *)(uintptr_t)desc_info->desc->cookie; -} - -static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info, - void *ptr) -{ - desc_info->desc->cookie = (uintptr_t) ptr; -} - -static struct rocker_desc_info * -rocker_desc_head_get(const struct rocker_dma_ring_info *info) -{ - static struct rocker_desc_info *desc_info; - u32 head = __pos_inc(info->head, info->size); - - desc_info = &info->desc_info[info->head]; - if (head == info->tail) - return NULL; /* ring full */ - desc_info->tlv_size = 0; - return desc_info; -} - -static void rocker_desc_commit(const struct rocker_desc_info *desc_info) -{ - desc_info->desc->buf_size = desc_info->data_size; - desc_info->desc->tlv_size = desc_info->tlv_size; -} - -static void rocker_desc_head_set(const struct rocker *rocker, - struct rocker_dma_ring_info *info, - const struct rocker_desc_info *desc_info) -{ - u32 head = __pos_inc(info->head, info->size); - - BUG_ON(head == info->tail); - rocker_desc_commit(desc_info); - info->head = head; - rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); -} - -static struct rocker_desc_info * -rocker_desc_tail_get(struct rocker_dma_ring_info *info) -{ - static struct rocker_desc_info *desc_info; - - if (info->tail == info->head) - return NULL; /* nothing to be done between head and tail */ - desc_info = &info->desc_info[info->tail]; - if (!rocker_desc_gen(desc_info)) - return NULL; /* gen bit not set, desc is not ready yet */ - info->tail = __pos_inc(info->tail, info->size); - desc_info->tlv_size = desc_info->desc->tlv_size; - return desc_info; -} - -static void rocker_dma_ring_credits_set(const struct rocker *rocker, - const struct rocker_dma_ring_info *info, - u32 credits) -{ - if (credits) - rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); -} - -static unsigned long rocker_dma_ring_size_fix(size_t size) -{ - return max(ROCKER_DMA_SIZE_MIN, - min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); -} - -static int rocker_dma_ring_create(const struct rocker *rocker, - unsigned int type, - size_t size, - struct rocker_dma_ring_info *info) -{ - int i; - - BUG_ON(size != rocker_dma_ring_size_fix(size)); - info->size = size; - info->type = type; - info->head = 0; - info->tail = 0; - info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), - GFP_KERNEL); - if (!info->desc_info) - return -ENOMEM; - - info->desc = pci_alloc_consistent(rocker->pdev, - info->size * sizeof(*info->desc), - &info->mapaddr); - if (!info->desc) { - kfree(info->desc_info); - return -ENOMEM; - } - - for (i = 0; i < info->size; i++) - info->desc_info[i].desc = &info->desc[i]; - - rocker_write32(rocker, DMA_DESC_CTRL(info->type), - ROCKER_DMA_DESC_CTRL_RESET); - rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); - rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); - - return 0; -} - -static void rocker_dma_ring_destroy(const struct rocker *rocker, - const struct rocker_dma_ring_info *info) -{ - rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); - - pci_free_consistent(rocker->pdev, - info->size * sizeof(struct rocker_desc), - info->desc, info->mapaddr); - kfree(info->desc_info); -} - -static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker, - struct rocker_dma_ring_info *info) -{ - int i; - - BUG_ON(info->head || info->tail); - - /* When ring is consumer, we need to advance head for each desc. - * That tells hw that the desc is ready to be used by it. - */ - for (i = 0; i < info->size - 1; i++) - rocker_desc_head_set(rocker, info, &info->desc_info[i]); - rocker_desc_commit(&info->desc_info[i]); -} - -static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker, - const struct rocker_dma_ring_info *info, - int direction, size_t buf_size) -{ - struct pci_dev *pdev = rocker->pdev; - int i; - int err; - - for (i = 0; i < info->size; i++) { - struct rocker_desc_info *desc_info = &info->desc_info[i]; - struct rocker_desc *desc = &info->desc[i]; - dma_addr_t dma_handle; - char *buf; - - buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); - if (!buf) { - err = -ENOMEM; - goto rollback; - } - - dma_handle = pci_map_single(pdev, buf, buf_size, direction); - if (pci_dma_mapping_error(pdev, dma_handle)) { - kfree(buf); - err = -EIO; - goto rollback; - } - - desc_info->data = buf; - desc_info->data_size = buf_size; - dma_unmap_addr_set(desc_info, mapaddr, dma_handle); - - desc->buf_addr = dma_handle; - desc->buf_size = buf_size; - } - return 0; - -rollback: - for (i--; i >= 0; i--) { - const struct rocker_desc_info *desc_info = &info->desc_info[i]; - - pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), - desc_info->data_size, direction); - kfree(desc_info->data); - } - return err; -} - -static void rocker_dma_ring_bufs_free(const struct rocker *rocker, - const struct rocker_dma_ring_info *info, - int direction) -{ - struct pci_dev *pdev = rocker->pdev; - int i; - - for (i = 0; i < info->size; i++) { - const struct rocker_desc_info *desc_info = &info->desc_info[i]; - struct rocker_desc *desc = &info->desc[i]; - - desc->buf_addr = 0; - desc->buf_size = 0; - pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), - desc_info->data_size, direction); - kfree(desc_info->data); - } -} - -static int rocker_dma_rings_init(struct rocker *rocker) -{ - const struct pci_dev *pdev = rocker->pdev; - int err; - - err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, - ROCKER_DMA_CMD_DEFAULT_SIZE, - &rocker->cmd_ring); - if (err) { - dev_err(&pdev->dev, "failed to create command dma ring\n"); - return err; - } - - spin_lock_init(&rocker->cmd_ring_lock); - - err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, - PCI_DMA_BIDIRECTIONAL, PAGE_SIZE); - if (err) { - dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); - goto err_dma_cmd_ring_bufs_alloc; - } - - err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, - ROCKER_DMA_EVENT_DEFAULT_SIZE, - &rocker->event_ring); - if (err) { - dev_err(&pdev->dev, "failed to create event dma ring\n"); - goto err_dma_event_ring_create; - } - - err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, - PCI_DMA_FROMDEVICE, PAGE_SIZE); - if (err) { - dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); - goto err_dma_event_ring_bufs_alloc; - } - rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); - return 0; - -err_dma_event_ring_bufs_alloc: - rocker_dma_ring_destroy(rocker, &rocker->event_ring); -err_dma_event_ring_create: - rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, - PCI_DMA_BIDIRECTIONAL); -err_dma_cmd_ring_bufs_alloc: - rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); - return err; -} - -static void rocker_dma_rings_fini(struct rocker *rocker) -{ - rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, - PCI_DMA_BIDIRECTIONAL); - rocker_dma_ring_destroy(rocker, &rocker->event_ring); - rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, - PCI_DMA_BIDIRECTIONAL); - rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); -} - -static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - struct sk_buff *skb, size_t buf_len) -{ - const struct rocker *rocker = rocker_port->rocker; - struct pci_dev *pdev = rocker->pdev; - dma_addr_t dma_handle; - - dma_handle = pci_map_single(pdev, skb->data, buf_len, - PCI_DMA_FROMDEVICE); - if (pci_dma_mapping_error(pdev, dma_handle)) - return -EIO; - if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) - goto tlv_put_failure; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) - goto tlv_put_failure; - return 0; - -tlv_put_failure: - pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE); - desc_info->tlv_size = 0; - return -EMSGSIZE; -} - -static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port) -{ - return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; -} - -static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info) -{ - struct net_device *dev = rocker_port->dev; - struct sk_buff *skb; - size_t buf_len = rocker_port_rx_buf_len(rocker_port); - int err; - - /* Ensure that hw will see tlv_size zero in case of an error. - * That tells hw to use another descriptor. - */ - rocker_desc_cookie_ptr_set(desc_info, NULL); - desc_info->tlv_size = 0; - - skb = netdev_alloc_skb_ip_align(dev, buf_len); - if (!skb) - return -ENOMEM; - err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len); - if (err) { - dev_kfree_skb_any(skb); - return err; - } - rocker_desc_cookie_ptr_set(desc_info, skb); - return 0; -} - -static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker, - const struct rocker_tlv **attrs) -{ - struct pci_dev *pdev = rocker->pdev; - dma_addr_t dma_handle; - size_t len; - - if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || - !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) - return; - dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); - len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); - pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE); -} - -static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker, - const struct rocker_desc_info *desc_info) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; - struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); - - if (!skb) - return; - rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); - rocker_dma_rx_ring_skb_unmap(rocker, attrs); - dev_kfree_skb_any(skb); -} - -static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port) -{ - const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; - const struct rocker *rocker = rocker_port->rocker; - int i; - int err; - - for (i = 0; i < rx_ring->size; i++) { - err = rocker_dma_rx_ring_skb_alloc(rocker_port, - &rx_ring->desc_info[i]); - if (err) - goto rollback; - } - return 0; - -rollback: - for (i--; i >= 0; i--) - rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); - return err; -} - -static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port) -{ - const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; - const struct rocker *rocker = rocker_port->rocker; - int i; - - for (i = 0; i < rx_ring->size; i++) - rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); -} - -static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) -{ - struct rocker *rocker = rocker_port->rocker; - int err; - - err = rocker_dma_ring_create(rocker, - ROCKER_DMA_TX(rocker_port->port_number), - ROCKER_DMA_TX_DEFAULT_SIZE, - &rocker_port->tx_ring); - if (err) { - netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); - return err; - } - - err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, - PCI_DMA_TODEVICE, - ROCKER_DMA_TX_DESC_SIZE); - if (err) { - netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); - goto err_dma_tx_ring_bufs_alloc; - } - - err = rocker_dma_ring_create(rocker, - ROCKER_DMA_RX(rocker_port->port_number), - ROCKER_DMA_RX_DEFAULT_SIZE, - &rocker_port->rx_ring); - if (err) { - netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); - goto err_dma_rx_ring_create; - } - - err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, - PCI_DMA_BIDIRECTIONAL, - ROCKER_DMA_RX_DESC_SIZE); - if (err) { - netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); - goto err_dma_rx_ring_bufs_alloc; - } - - err = rocker_dma_rx_ring_skbs_alloc(rocker_port); - if (err) { - netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); - goto err_dma_rx_ring_skbs_alloc; - } - rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); - - return 0; - -err_dma_rx_ring_skbs_alloc: - rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, - PCI_DMA_BIDIRECTIONAL); -err_dma_rx_ring_bufs_alloc: - rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); -err_dma_rx_ring_create: - rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, - PCI_DMA_TODEVICE); -err_dma_tx_ring_bufs_alloc: - rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); - return err; -} - -static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) -{ - struct rocker *rocker = rocker_port->rocker; - - rocker_dma_rx_ring_skbs_free(rocker_port); - rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, - PCI_DMA_BIDIRECTIONAL); - rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); - rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, - PCI_DMA_TODEVICE); - rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); -} - -static void rocker_port_set_enable(const struct rocker_port *rocker_port, - bool enable) -{ - u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); - - if (enable) - val |= 1ULL << rocker_port->pport; - else - val &= ~(1ULL << rocker_port->pport); - rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); -} - -/******************************** - * Interrupt handler and helpers - ********************************/ - -static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) -{ - struct rocker *rocker = dev_id; - const struct rocker_desc_info *desc_info; - struct rocker_wait *wait; - u32 credits = 0; - - spin_lock(&rocker->cmd_ring_lock); - while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { - wait = rocker_desc_cookie_ptr_get(desc_info); - if (wait->nowait) { - rocker_desc_gen_clear(desc_info); - rocker_wait_destroy(NULL, wait); - } else { - rocker_wait_wake_up(wait); - } - credits++; - } - spin_unlock(&rocker->cmd_ring_lock); - rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); - - return IRQ_HANDLED; -} - -static void rocker_port_link_up(const struct rocker_port *rocker_port) -{ - netif_carrier_on(rocker_port->dev); - netdev_info(rocker_port->dev, "Link is up\n"); -} - -static void rocker_port_link_down(const struct rocker_port *rocker_port) -{ - netif_carrier_off(rocker_port->dev); - netdev_info(rocker_port->dev, "Link is down\n"); -} - -static int rocker_event_link_change(const struct rocker *rocker, - const struct rocker_tlv *info) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; - unsigned int port_number; - bool link_up; - struct rocker_port *rocker_port; - - rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); - if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || - !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) - return -EIO; - port_number = - rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; - link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); - - if (port_number >= rocker->port_count) - return -EINVAL; - - rocker_port = rocker->ports[port_number]; - if (netif_carrier_ok(rocker_port->dev) != link_up) { - if (link_up) - rocker_port_link_up(rocker_port); - else - rocker_port_link_down(rocker_port); - } - - return 0; -} - -static int rocker_port_fdb(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - const unsigned char *addr, - __be16 vlan_id, int flags); - -static int rocker_event_mac_vlan_seen(const struct rocker *rocker, - const struct rocker_tlv *info) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; - unsigned int port_number; - struct rocker_port *rocker_port; - const unsigned char *addr; - int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED; - __be16 vlan_id; - - rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); - if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || - !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || - !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) - return -EIO; - port_number = - rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; - addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); - vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); - - if (port_number >= rocker->port_count) - return -EINVAL; - - rocker_port = rocker->ports[port_number]; - - if (rocker_port->stp_state != BR_STATE_LEARNING && - rocker_port->stp_state != BR_STATE_FORWARDING) - return 0; - - return rocker_port_fdb(rocker_port, NULL, addr, vlan_id, flags); -} - -static int rocker_event_process(const struct rocker *rocker, - const struct rocker_desc_info *desc_info) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; - const struct rocker_tlv *info; - u16 type; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); - if (!attrs[ROCKER_TLV_EVENT_TYPE] || - !attrs[ROCKER_TLV_EVENT_INFO]) - return -EIO; - - type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); - info = attrs[ROCKER_TLV_EVENT_INFO]; - - switch (type) { - case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: - return rocker_event_link_change(rocker, info); - case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: - return rocker_event_mac_vlan_seen(rocker, info); - } - - return -EOPNOTSUPP; -} - -static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) -{ - struct rocker *rocker = dev_id; - const struct pci_dev *pdev = rocker->pdev; - const struct rocker_desc_info *desc_info; - u32 credits = 0; - int err; - - while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { - err = rocker_desc_err(desc_info); - if (err) { - dev_err(&pdev->dev, "event desc received with err %d\n", - err); - } else { - err = rocker_event_process(rocker, desc_info); - if (err) - dev_err(&pdev->dev, "event processing failed with err %d\n", - err); - } - rocker_desc_gen_clear(desc_info); - rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); - credits++; - } - rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); - - return IRQ_HANDLED; -} - -static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) -{ - struct rocker_port *rocker_port = dev_id; - - napi_schedule(&rocker_port->napi_tx); - return IRQ_HANDLED; -} - -static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) -{ - struct rocker_port *rocker_port = dev_id; - - napi_schedule(&rocker_port->napi_rx); - return IRQ_HANDLED; -} - -/******************** - * Command interface - ********************/ - -typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv); - -typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info, - void *priv); - -static int rocker_cmd_exec(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - rocker_cmd_prep_cb_t prepare, void *prepare_priv, - rocker_cmd_proc_cb_t process, void *process_priv) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_desc_info *desc_info; - struct rocker_wait *wait; - bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT); - unsigned long lock_flags; - int err; - - wait = rocker_wait_create(rocker_port, trans, flags); - if (!wait) - return -ENOMEM; - wait->nowait = nowait; - - spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags); - - desc_info = rocker_desc_head_get(&rocker->cmd_ring); - if (!desc_info) { - spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); - err = -EAGAIN; - goto out; - } - - err = prepare(rocker_port, desc_info, prepare_priv); - if (err) { - spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); - goto out; - } - - rocker_desc_cookie_ptr_set(desc_info, wait); - - if (!switchdev_trans_ph_prepare(trans)) - rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); - - spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); - - if (nowait) - return 0; - - if (!switchdev_trans_ph_prepare(trans)) - if (!rocker_wait_event_timeout(wait, HZ / 10)) - return -EIO; - - err = rocker_desc_err(desc_info); - if (err) - return err; - - if (process) - err = process(rocker_port, desc_info, process_priv); - - rocker_desc_gen_clear(desc_info); -out: - rocker_wait_destroy(trans, wait); - return err; -} - -static int -rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - return 0; -} - -static int -rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info, - void *priv) -{ - struct ethtool_cmd *ecmd = priv; - const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; - const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; - u32 speed; - u8 duplex; - u8 autoneg; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); - if (!attrs[ROCKER_TLV_CMD_INFO]) - return -EIO; - - rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, - attrs[ROCKER_TLV_CMD_INFO]); - if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || - !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || - !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) - return -EIO; - - speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); - duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); - autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); - - ecmd->transceiver = XCVR_INTERNAL; - ecmd->supported = SUPPORTED_TP; - ecmd->phy_address = 0xff; - ecmd->port = PORT_TP; - ethtool_cmd_speed_set(ecmd, speed); - ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; - ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; - - return 0; -} - -static int -rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info, - void *priv) -{ - unsigned char *macaddr = priv; - const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; - const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; - const struct rocker_tlv *attr; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); - if (!attrs[ROCKER_TLV_CMD_INFO]) - return -EIO; - - rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, - attrs[ROCKER_TLV_CMD_INFO]); - attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; - if (!attr) - return -EIO; - - if (rocker_tlv_len(attr) != ETH_ALEN) - return -EINVAL; - - ether_addr_copy(macaddr, rocker_tlv_data(attr)); - return 0; -} - -struct port_name { - char *buf; - size_t len; -}; - -static int -rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info, - void *priv) -{ - const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; - const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; - struct port_name *name = priv; - const struct rocker_tlv *attr; - size_t i, j, len; - const char *str; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); - if (!attrs[ROCKER_TLV_CMD_INFO]) - return -EIO; - - rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, - attrs[ROCKER_TLV_CMD_INFO]); - attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; - if (!attr) - return -EIO; - - len = min_t(size_t, rocker_tlv_len(attr), name->len); - str = rocker_tlv_data(attr); - - /* make sure name only contains alphanumeric characters */ - for (i = j = 0; i < len; ++i) { - if (isalnum(str[i])) { - name->buf[j] = str[i]; - j++; - } - } - - if (j == 0) - return -EIO; - - name->buf[j] = '\0'; - - return 0; -} - -static int -rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - struct ethtool_cmd *ecmd = priv; - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, - ethtool_cmd_speed(ecmd))) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, - ecmd->duplex)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, - ecmd->autoneg)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - return 0; -} - -static int -rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - const unsigned char *macaddr = priv; - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, - ETH_ALEN, macaddr)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - return 0; -} - -static int -rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - int mtu = *(int *)priv; - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, - mtu)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - return 0; -} - -static int -rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, - !!(rocker_port->brport_flags & BR_LEARNING))) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - return 0; -} - -static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, - struct ethtool_cmd *ecmd) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_get_port_settings_prep, NULL, - rocker_cmd_get_port_settings_ethtool_proc, - ecmd); -} - -static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, - unsigned char *macaddr) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_get_port_settings_prep, NULL, - rocker_cmd_get_port_settings_macaddr_proc, - macaddr); -} - -static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, - struct ethtool_cmd *ecmd) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_set_port_settings_ethtool_prep, - ecmd, NULL, NULL); -} - -static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, - unsigned char *macaddr) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_set_port_settings_macaddr_prep, - macaddr, NULL, NULL); -} - -static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, - int mtu) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_set_port_settings_mtu_prep, - &mtu, NULL, NULL); -} - -static int rocker_port_set_learning(struct rocker_port *rocker_port, - struct switchdev_trans *trans) -{ - return rocker_cmd_exec(rocker_port, trans, 0, - rocker_cmd_set_port_learning_prep, - NULL, NULL, NULL); -} - -static int -rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, - entry->key.ig_port.in_pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, - entry->key.ig_port.in_pport_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, - entry->key.ig_port.goto_tbl)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, - entry->key.vlan.in_pport)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->key.vlan.vlan_id)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, - entry->key.vlan.vlan_id_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, - entry->key.vlan.goto_tbl)) - return -EMSGSIZE; - if (entry->key.vlan.untagged && - rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID, - entry->key.vlan.new_vlan_id)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, - entry->key.term_mac.in_pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, - entry->key.term_mac.in_pport_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, - entry->key.term_mac.eth_type)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, - ETH_ALEN, entry->key.term_mac.eth_dst)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, - ETH_ALEN, entry->key.term_mac.eth_dst_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->key.term_mac.vlan_id)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, - entry->key.term_mac.vlan_id_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, - entry->key.term_mac.goto_tbl)) - return -EMSGSIZE; - if (entry->key.term_mac.copy_to_cpu && - rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, - entry->key.term_mac.copy_to_cpu)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, - entry->key.ucast_routing.eth_type)) - return -EMSGSIZE; - if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP, - entry->key.ucast_routing.dst4)) - return -EMSGSIZE; - if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK, - entry->key.ucast_routing.dst4_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, - entry->key.ucast_routing.goto_tbl)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, - entry->key.ucast_routing.group_id)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (entry->key.bridge.has_eth_dst && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, - ETH_ALEN, entry->key.bridge.eth_dst)) - return -EMSGSIZE; - if (entry->key.bridge.has_eth_dst_mask && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, - ETH_ALEN, entry->key.bridge.eth_dst_mask)) - return -EMSGSIZE; - if (entry->key.bridge.vlan_id && - rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->key.bridge.vlan_id)) - return -EMSGSIZE; - if (entry->key.bridge.tunnel_id && - rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID, - entry->key.bridge.tunnel_id)) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, - entry->key.bridge.goto_tbl)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, - entry->key.bridge.group_id)) - return -EMSGSIZE; - if (entry->key.bridge.copy_to_cpu && - rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, - entry->key.bridge.copy_to_cpu)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info, - const struct rocker_flow_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, - entry->key.acl.in_pport)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, - entry->key.acl.in_pport_mask)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, - ETH_ALEN, entry->key.acl.eth_src)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK, - ETH_ALEN, entry->key.acl.eth_src_mask)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, - ETH_ALEN, entry->key.acl.eth_dst)) - return -EMSGSIZE; - if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, - ETH_ALEN, entry->key.acl.eth_dst_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, - entry->key.acl.eth_type)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->key.acl.vlan_id)) - return -EMSGSIZE; - if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, - entry->key.acl.vlan_id_mask)) - return -EMSGSIZE; - - switch (ntohs(entry->key.acl.eth_type)) { - case ETH_P_IP: - case ETH_P_IPV6: - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO, - entry->key.acl.ip_proto)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, - ROCKER_TLV_OF_DPA_IP_PROTO_MASK, - entry->key.acl.ip_proto_mask)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP, - entry->key.acl.ip_tos & 0x3f)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, - ROCKER_TLV_OF_DPA_IP_DSCP_MASK, - entry->key.acl.ip_tos_mask & 0x3f)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN, - (entry->key.acl.ip_tos & 0xc0) >> 6)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, - ROCKER_TLV_OF_DPA_IP_ECN_MASK, - (entry->key.acl.ip_tos_mask & 0xc0) >> 6)) - return -EMSGSIZE; - break; - } - - if (entry->key.acl.group_id != ROCKER_GROUP_NONE && - rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, - entry->key.acl.group_id)) - return -EMSGSIZE; - - return 0; -} - -static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - const struct rocker_flow_tbl_entry *entry = priv; - struct rocker_tlv *cmd_info; - int err = 0; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID, - entry->key.tbl_id)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY, - entry->key.priority)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0)) - return -EMSGSIZE; - if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, - entry->cookie)) - return -EMSGSIZE; - - switch (entry->key.tbl_id) { - case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT: - err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry); - break; - case ROCKER_OF_DPA_TABLE_ID_VLAN: - err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry); - break; - case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC: - err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry); - break; - case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING: - err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry); - break; - case ROCKER_OF_DPA_TABLE_ID_BRIDGING: - err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry); - break; - case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY: - err = rocker_cmd_flow_tbl_add_acl(desc_info, entry); - break; - default: - err = -ENOTSUPP; - break; - } - - if (err) - return err; - - rocker_tlv_nest_end(desc_info, cmd_info); - - return 0; -} - -static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - const struct rocker_flow_tbl_entry *entry = priv; - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, - entry->cookie)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - - return 0; -} - -static int -rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info, - struct rocker_group_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT, - ROCKER_GROUP_PORT_GET(entry->group_id))) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN, - entry->l2_interface.pop_vlan)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info, - const struct rocker_group_tbl_entry *entry) -{ - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, - entry->l2_rewrite.group_id)) - return -EMSGSIZE; - if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, - ETH_ALEN, entry->l2_rewrite.eth_src)) - return -EMSGSIZE; - if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, - ETH_ALEN, entry->l2_rewrite.eth_dst)) - return -EMSGSIZE; - if (entry->l2_rewrite.vlan_id && - rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->l2_rewrite.vlan_id)) - return -EMSGSIZE; - - return 0; -} - -static int -rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info, - const struct rocker_group_tbl_entry *entry) -{ - int i; - struct rocker_tlv *group_ids; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT, - entry->group_count)) - return -EMSGSIZE; - - group_ids = rocker_tlv_nest_start(desc_info, - ROCKER_TLV_OF_DPA_GROUP_IDS); - if (!group_ids) - return -EMSGSIZE; - - for (i = 0; i < entry->group_count; i++) - /* Note TLV array is 1-based */ - if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i])) - return -EMSGSIZE; - - rocker_tlv_nest_end(desc_info, group_ids); - - return 0; -} - -static int -rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info, - const struct rocker_group_tbl_entry *entry) -{ - if (!is_zero_ether_addr(entry->l3_unicast.eth_src) && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, - ETH_ALEN, entry->l3_unicast.eth_src)) - return -EMSGSIZE; - if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) && - rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, - ETH_ALEN, entry->l3_unicast.eth_dst)) - return -EMSGSIZE; - if (entry->l3_unicast.vlan_id && - rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, - entry->l3_unicast.vlan_id)) - return -EMSGSIZE; - if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK, - entry->l3_unicast.ttl_check)) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, - entry->l3_unicast.group_id)) - return -EMSGSIZE; - - return 0; -} - -static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - struct rocker_group_tbl_entry *entry = priv; - struct rocker_tlv *cmd_info; - int err = 0; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, - entry->group_id)) - return -EMSGSIZE; - - switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { - case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE: - err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry); - break; - case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE: - err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry); - break; - case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: - case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: - err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry); - break; - case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST: - err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry); - break; - default: - err = -ENOTSUPP; - break; - } - - if (err) - return err; - - rocker_tlv_nest_end(desc_info, cmd_info); - - return 0; -} - -static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - const struct rocker_group_tbl_entry *entry = priv; - struct rocker_tlv *cmd_info; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) - return -EMSGSIZE; - cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_info) - return -EMSGSIZE; - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, - entry->group_id)) - return -EMSGSIZE; - rocker_tlv_nest_end(desc_info, cmd_info); - - return 0; -} - -/*************************************************** - * Flow, group, FDB, internal VLAN and neigh tables - ***************************************************/ - -static int rocker_init_tbls(struct rocker *rocker) -{ - hash_init(rocker->flow_tbl); - spin_lock_init(&rocker->flow_tbl_lock); - - hash_init(rocker->group_tbl); - spin_lock_init(&rocker->group_tbl_lock); - - hash_init(rocker->fdb_tbl); - spin_lock_init(&rocker->fdb_tbl_lock); - - hash_init(rocker->internal_vlan_tbl); - spin_lock_init(&rocker->internal_vlan_tbl_lock); - - hash_init(rocker->neigh_tbl); - spin_lock_init(&rocker->neigh_tbl_lock); - - return 0; -} - -static void rocker_free_tbls(struct rocker *rocker) -{ - unsigned long flags; - struct rocker_flow_tbl_entry *flow_entry; - struct rocker_group_tbl_entry *group_entry; - struct rocker_fdb_tbl_entry *fdb_entry; - struct rocker_internal_vlan_tbl_entry *internal_vlan_entry; - struct rocker_neigh_tbl_entry *neigh_entry; - struct hlist_node *tmp; - int bkt; - - spin_lock_irqsave(&rocker->flow_tbl_lock, flags); - hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry) - hash_del(&flow_entry->entry); - spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags); - - spin_lock_irqsave(&rocker->group_tbl_lock, flags); - hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry) - hash_del(&group_entry->entry); - spin_unlock_irqrestore(&rocker->group_tbl_lock, flags); - - spin_lock_irqsave(&rocker->fdb_tbl_lock, flags); - hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry) - hash_del(&fdb_entry->entry); - spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags); - - spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags); - hash_for_each_safe(rocker->internal_vlan_tbl, bkt, - tmp, internal_vlan_entry, entry) - hash_del(&internal_vlan_entry->entry); - spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags); - - spin_lock_irqsave(&rocker->neigh_tbl_lock, flags); - hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry) - hash_del(&neigh_entry->entry); - spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags); -} - -static struct rocker_flow_tbl_entry * -rocker_flow_tbl_find(const struct rocker *rocker, - const struct rocker_flow_tbl_entry *match) -{ - struct rocker_flow_tbl_entry *found; - size_t key_len = match->key_len ? match->key_len : sizeof(found->key); - - hash_for_each_possible(rocker->flow_tbl, found, - entry, match->key_crc32) { - if (memcmp(&found->key, &match->key, key_len) == 0) - return found; - } - - return NULL; -} - -static int rocker_flow_tbl_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_flow_tbl_entry *match) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_flow_tbl_entry *found; - size_t key_len = match->key_len ? match->key_len : sizeof(found->key); - unsigned long lock_flags; - - match->key_crc32 = crc32(~0, &match->key, key_len); - - spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags); - - found = rocker_flow_tbl_find(rocker, match); - - if (found) { - match->cookie = found->cookie; - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - rocker_port_kfree(trans, found); - found = match; - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD; - } else { - found = match; - found->cookie = rocker->flow_tbl_next_cookie++; - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD; - } - - if (!switchdev_trans_ph_prepare(trans)) - hash_add(rocker->flow_tbl, &found->entry, found->key_crc32); - - spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags); - - return rocker_cmd_exec(rocker_port, trans, flags, - rocker_cmd_flow_tbl_add, found, NULL, NULL); -} - -static int rocker_flow_tbl_del(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_flow_tbl_entry *match) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_flow_tbl_entry *found; - size_t key_len = match->key_len ? match->key_len : sizeof(found->key); - unsigned long lock_flags; - int err = 0; - - match->key_crc32 = crc32(~0, &match->key, key_len); - - spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags); - - found = rocker_flow_tbl_find(rocker, match); - - if (found) { - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL; - } - - spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags); - - rocker_port_kfree(trans, match); - - if (found) { - err = rocker_cmd_exec(rocker_port, trans, flags, - rocker_cmd_flow_tbl_del, - found, NULL, NULL); - rocker_port_kfree(trans, found); - } - - return err; -} - -static int rocker_flow_tbl_do(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_flow_tbl_entry *entry) -{ - if (flags & ROCKER_OP_FLAG_REMOVE) - return rocker_flow_tbl_del(rocker_port, trans, flags, entry); - else - return rocker_flow_tbl_add(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - u32 in_pport, u32 in_pport_mask, - enum rocker_of_dpa_table_id goto_tbl) -{ - struct rocker_flow_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->key.priority = ROCKER_PRIORITY_IG_PORT; - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT; - entry->key.ig_port.in_pport = in_pport; - entry->key.ig_port.in_pport_mask = in_pport_mask; - entry->key.ig_port.goto_tbl = goto_tbl; - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - u32 in_pport, __be16 vlan_id, - __be16 vlan_id_mask, - enum rocker_of_dpa_table_id goto_tbl, - bool untagged, __be16 new_vlan_id) -{ - struct rocker_flow_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->key.priority = ROCKER_PRIORITY_VLAN; - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN; - entry->key.vlan.in_pport = in_pport; - entry->key.vlan.vlan_id = vlan_id; - entry->key.vlan.vlan_id_mask = vlan_id_mask; - entry->key.vlan.goto_tbl = goto_tbl; - - entry->key.vlan.untagged = untagged; - entry->key.vlan.new_vlan_id = new_vlan_id; - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - u32 in_pport, u32 in_pport_mask, - __be16 eth_type, const u8 *eth_dst, - const u8 *eth_dst_mask, __be16 vlan_id, - __be16 vlan_id_mask, bool copy_to_cpu, - int flags) -{ - struct rocker_flow_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - if (is_multicast_ether_addr(eth_dst)) { - entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST; - entry->key.term_mac.goto_tbl = - ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING; - } else { - entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST; - entry->key.term_mac.goto_tbl = - ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; - } - - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; - entry->key.term_mac.in_pport = in_pport; - entry->key.term_mac.in_pport_mask = in_pport_mask; - entry->key.term_mac.eth_type = eth_type; - ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst); - ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask); - entry->key.term_mac.vlan_id = vlan_id; - entry->key.term_mac.vlan_id_mask = vlan_id_mask; - entry->key.term_mac.copy_to_cpu = copy_to_cpu; - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const u8 *eth_dst, const u8 *eth_dst_mask, - __be16 vlan_id, u32 tunnel_id, - enum rocker_of_dpa_table_id goto_tbl, - u32 group_id, bool copy_to_cpu) -{ - struct rocker_flow_tbl_entry *entry; - u32 priority; - bool vlan_bridging = !!vlan_id; - bool dflt = !eth_dst || (eth_dst && eth_dst_mask); - bool wild = false; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING; - - if (eth_dst) { - entry->key.bridge.has_eth_dst = 1; - ether_addr_copy(entry->key.bridge.eth_dst, eth_dst); - } - if (eth_dst_mask) { - entry->key.bridge.has_eth_dst_mask = 1; - ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask); - if (!ether_addr_equal(eth_dst_mask, ff_mac)) - wild = true; - } - - priority = ROCKER_PRIORITY_UNKNOWN; - if (vlan_bridging && dflt && wild) - priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD; - else if (vlan_bridging && dflt && !wild) - priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT; - else if (vlan_bridging && !dflt) - priority = ROCKER_PRIORITY_BRIDGING_VLAN; - else if (!vlan_bridging && dflt && wild) - priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD; - else if (!vlan_bridging && dflt && !wild) - priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT; - else if (!vlan_bridging && !dflt) - priority = ROCKER_PRIORITY_BRIDGING_TENANT; - - entry->key.priority = priority; - entry->key.bridge.vlan_id = vlan_id; - entry->key.bridge.tunnel_id = tunnel_id; - entry->key.bridge.goto_tbl = goto_tbl; - entry->key.bridge.group_id = group_id; - entry->key.bridge.copy_to_cpu = copy_to_cpu; - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - __be16 eth_type, __be32 dst, - __be32 dst_mask, u32 priority, - enum rocker_of_dpa_table_id goto_tbl, - u32 group_id, int flags) -{ - struct rocker_flow_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; - entry->key.priority = priority; - entry->key.ucast_routing.eth_type = eth_type; - entry->key.ucast_routing.dst4 = dst; - entry->key.ucast_routing.dst4_mask = dst_mask; - entry->key.ucast_routing.goto_tbl = goto_tbl; - entry->key.ucast_routing.group_id = group_id; - entry->key_len = offsetof(struct rocker_flow_tbl_key, - ucast_routing.group_id); - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_flow_tbl_acl(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - u32 in_pport, u32 in_pport_mask, - const u8 *eth_src, const u8 *eth_src_mask, - const u8 *eth_dst, const u8 *eth_dst_mask, - __be16 eth_type, __be16 vlan_id, - __be16 vlan_id_mask, u8 ip_proto, - u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask, - u32 group_id) -{ - u32 priority; - struct rocker_flow_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - priority = ROCKER_PRIORITY_ACL_NORMAL; - if (eth_dst && eth_dst_mask) { - if (ether_addr_equal(eth_dst_mask, mcast_mac)) - priority = ROCKER_PRIORITY_ACL_DFLT; - else if (is_link_local_ether_addr(eth_dst)) - priority = ROCKER_PRIORITY_ACL_CTRL; - } - - entry->key.priority = priority; - entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; - entry->key.acl.in_pport = in_pport; - entry->key.acl.in_pport_mask = in_pport_mask; - - if (eth_src) - ether_addr_copy(entry->key.acl.eth_src, eth_src); - if (eth_src_mask) - ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask); - if (eth_dst) - ether_addr_copy(entry->key.acl.eth_dst, eth_dst); - if (eth_dst_mask) - ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask); - - entry->key.acl.eth_type = eth_type; - entry->key.acl.vlan_id = vlan_id; - entry->key.acl.vlan_id_mask = vlan_id_mask; - entry->key.acl.ip_proto = ip_proto; - entry->key.acl.ip_proto_mask = ip_proto_mask; - entry->key.acl.ip_tos = ip_tos; - entry->key.acl.ip_tos_mask = ip_tos_mask; - entry->key.acl.group_id = group_id; - - return rocker_flow_tbl_do(rocker_port, trans, flags, entry); -} - -static struct rocker_group_tbl_entry * -rocker_group_tbl_find(const struct rocker *rocker, - const struct rocker_group_tbl_entry *match) -{ - struct rocker_group_tbl_entry *found; - - hash_for_each_possible(rocker->group_tbl, found, - entry, match->group_id) { - if (found->group_id == match->group_id) - return found; - } - - return NULL; -} - -static void rocker_group_tbl_entry_free(struct switchdev_trans *trans, - struct rocker_group_tbl_entry *entry) -{ - switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { - case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: - case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: - rocker_port_kfree(trans, entry->group_ids); - break; - default: - break; - } - rocker_port_kfree(trans, entry); -} - -static int rocker_group_tbl_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_group_tbl_entry *match) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_group_tbl_entry *found; - unsigned long lock_flags; - - spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags); - - found = rocker_group_tbl_find(rocker, match); - - if (found) { - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - rocker_group_tbl_entry_free(trans, found); - found = match; - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD; - } else { - found = match; - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD; - } - - if (!switchdev_trans_ph_prepare(trans)) - hash_add(rocker->group_tbl, &found->entry, found->group_id); - - spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags); - - return rocker_cmd_exec(rocker_port, trans, flags, - rocker_cmd_group_tbl_add, found, NULL, NULL); -} - -static int rocker_group_tbl_del(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_group_tbl_entry *match) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_group_tbl_entry *found; - unsigned long lock_flags; - int err = 0; - - spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags); - - found = rocker_group_tbl_find(rocker, match); - - if (found) { - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL; - } - - spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags); - - rocker_group_tbl_entry_free(trans, match); - - if (found) { - err = rocker_cmd_exec(rocker_port, trans, flags, - rocker_cmd_group_tbl_del, - found, NULL, NULL); - rocker_group_tbl_entry_free(trans, found); - } - - return err; -} - -static int rocker_group_tbl_do(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - struct rocker_group_tbl_entry *entry) -{ - if (flags & ROCKER_OP_FLAG_REMOVE) - return rocker_group_tbl_del(rocker_port, trans, flags, entry); - else - return rocker_group_tbl_add(rocker_port, trans, flags, entry); -} - -static int rocker_group_l2_interface(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be16 vlan_id, u32 out_pport, - int pop_vlan) -{ - struct rocker_group_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); - entry->l2_interface.pop_vlan = pop_vlan; - - return rocker_group_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_group_l2_fan_out(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - int flags, u8 group_count, - const u32 *group_ids, u32 group_id) -{ - struct rocker_group_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->group_id = group_id; - entry->group_count = group_count; - - entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags, - group_count, sizeof(u32)); - if (!entry->group_ids) { - rocker_port_kfree(trans, entry); - return -ENOMEM; - } - memcpy(entry->group_ids, group_ids, group_count * sizeof(u32)); - - return rocker_group_tbl_do(rocker_port, trans, flags, entry); -} - -static int rocker_group_l2_flood(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be16 vlan_id, u8 group_count, - const u32 *group_ids, u32 group_id) -{ - return rocker_group_l2_fan_out(rocker_port, trans, flags, - group_count, group_ids, - group_id); -} - -static int rocker_group_l3_unicast(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - u32 index, const u8 *src_mac, const u8 *dst_mac, - __be16 vlan_id, bool ttl_check, u32 pport) -{ - struct rocker_group_tbl_entry *entry; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - entry->group_id = ROCKER_GROUP_L3_UNICAST(index); - if (src_mac) - ether_addr_copy(entry->l3_unicast.eth_src, src_mac); - if (dst_mac) - ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac); - entry->l3_unicast.vlan_id = vlan_id; - entry->l3_unicast.ttl_check = ttl_check; - entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport); - - return rocker_group_tbl_do(rocker_port, trans, flags, entry); -} - -static struct rocker_neigh_tbl_entry * -rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr) -{ - struct rocker_neigh_tbl_entry *found; - - hash_for_each_possible(rocker->neigh_tbl, found, - entry, be32_to_cpu(ip_addr)) - if (found->ip_addr == ip_addr) - return found; - - return NULL; -} - -static void _rocker_neigh_add(struct rocker *rocker, - struct switchdev_trans *trans, - struct rocker_neigh_tbl_entry *entry) -{ - if (!switchdev_trans_ph_commit(trans)) - entry->index = rocker->neigh_tbl_next_index++; - if (switchdev_trans_ph_prepare(trans)) - return; - entry->ref_count++; - hash_add(rocker->neigh_tbl, &entry->entry, - be32_to_cpu(entry->ip_addr)); -} - -static void _rocker_neigh_del(struct switchdev_trans *trans, - struct rocker_neigh_tbl_entry *entry) -{ - if (switchdev_trans_ph_prepare(trans)) - return; - if (--entry->ref_count == 0) { - hash_del(&entry->entry); - rocker_port_kfree(trans, entry); - } -} - -static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry, - struct switchdev_trans *trans, - const u8 *eth_dst, bool ttl_check) -{ - if (eth_dst) { - ether_addr_copy(entry->eth_dst, eth_dst); - entry->ttl_check = ttl_check; - } else if (!switchdev_trans_ph_prepare(trans)) { - entry->ref_count++; - } -} - -static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - int flags, __be32 ip_addr, const u8 *eth_dst) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_neigh_tbl_entry *entry; - struct rocker_neigh_tbl_entry *found; - unsigned long lock_flags; - __be16 eth_type = htons(ETH_P_IP); - enum rocker_of_dpa_table_id goto_tbl = - ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; - u32 group_id; - u32 priority = 0; - bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); - bool updating; - bool removing; - int err = 0; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags); - - found = rocker_neigh_tbl_find(rocker, ip_addr); - - updating = found && adding; - removing = found && !adding; - adding = !found && adding; - - if (adding) { - entry->ip_addr = ip_addr; - entry->dev = rocker_port->dev; - ether_addr_copy(entry->eth_dst, eth_dst); - entry->ttl_check = true; - _rocker_neigh_add(rocker, trans, entry); - } else if (removing) { - memcpy(entry, found, sizeof(*entry)); - _rocker_neigh_del(trans, found); - } else if (updating) { - _rocker_neigh_update(found, trans, eth_dst, true); - memcpy(entry, found, sizeof(*entry)); - } else { - err = -ENOENT; - } - - spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags); - - if (err) - goto err_out; - - /* For each active neighbor, we have an L3 unicast group and - * a /32 route to the neighbor, which uses the L3 unicast - * group. The L3 unicast group can also be referred to by - * other routes' nexthops. - */ - - err = rocker_group_l3_unicast(rocker_port, trans, flags, - entry->index, - rocker_port->dev->dev_addr, - entry->eth_dst, - rocker_port->internal_vlan_id, - entry->ttl_check, - rocker_port->pport); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) L3 unicast group index %d\n", - err, entry->index); - goto err_out; - } - - if (adding || removing) { - group_id = ROCKER_GROUP_L3_UNICAST(entry->index); - err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, - eth_type, ip_addr, - inet_make_mask(32), - priority, goto_tbl, - group_id, flags); - - if (err) - netdev_err(rocker_port->dev, - "Error (%d) /32 unicast route %pI4 group 0x%08x\n", - err, &entry->ip_addr, group_id); - } - -err_out: - if (!adding) - rocker_port_kfree(trans, entry); - - return err; -} - -static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - __be32 ip_addr) -{ - struct net_device *dev = rocker_port->dev; - struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr); - int err = 0; - - if (!n) { - n = neigh_create(&arp_tbl, &ip_addr, dev); - if (IS_ERR(n)) - return IS_ERR(n); - } - - /* If the neigh is already resolved, then go ahead and - * install the entry, otherwise start the ARP process to - * resolve the neigh. - */ - - if (n->nud_state & NUD_VALID) - err = rocker_port_ipv4_neigh(rocker_port, trans, 0, - ip_addr, n->ha); - else - neigh_event_send(n, NULL); - - neigh_release(n); - return err; -} - -static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be32 ip_addr, u32 *index) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_neigh_tbl_entry *entry; - struct rocker_neigh_tbl_entry *found; - unsigned long lock_flags; - bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); - bool updating; - bool removing; - bool resolved = true; - int err = 0; - - entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry)); - if (!entry) - return -ENOMEM; - - spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags); - - found = rocker_neigh_tbl_find(rocker, ip_addr); - if (found) - *index = found->index; - - updating = found && adding; - removing = found && !adding; - adding = !found && adding; - - if (adding) { - entry->ip_addr = ip_addr; - entry->dev = rocker_port->dev; - _rocker_neigh_add(rocker, trans, entry); - *index = entry->index; - resolved = false; - } else if (removing) { - _rocker_neigh_del(trans, found); - } else if (updating) { - _rocker_neigh_update(found, trans, NULL, false); - resolved = !is_zero_ether_addr(found->eth_dst); - } else { - err = -ENOENT; - } - - spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags); - - if (!adding) - rocker_port_kfree(trans, entry); - - if (err) - return err; - - /* Resolved means neigh ip_addr is resolved to neigh mac. */ - - if (!resolved) - err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr); - - return err; -} - -static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - int flags, __be16 vlan_id) -{ - struct rocker_port *p; - const struct rocker *rocker = rocker_port->rocker; - u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); - u32 *group_ids; - u8 group_count = 0; - int err = 0; - int i; - - group_ids = rocker_port_kcalloc(rocker_port, trans, flags, - rocker->port_count, sizeof(u32)); - if (!group_ids) - return -ENOMEM; - - /* Adjust the flood group for this VLAN. The flood group - * references an L2 interface group for each port in this - * VLAN. - */ - - for (i = 0; i < rocker->port_count; i++) { - p = rocker->ports[i]; - if (!p) - continue; - if (!rocker_port_is_bridged(p)) - continue; - if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) { - group_ids[group_count++] = - ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport); - } - } - - /* If there are no bridged ports in this VLAN, we're done */ - if (group_count == 0) - goto no_ports_in_vlan; - - err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id, - group_count, group_ids, group_id); - if (err) - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 flood group\n", err); - -no_ports_in_vlan: - rocker_port_kfree(trans, group_ids); - return err; -} - -static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be16 vlan_id, bool pop_vlan) -{ - const struct rocker *rocker = rocker_port->rocker; - struct rocker_port *p; - bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); - u32 out_pport; - int ref = 0; - int err; - int i; - - /* An L2 interface group for this port in this VLAN, but - * only when port STP state is LEARNING|FORWARDING. - */ - - if (rocker_port->stp_state == BR_STATE_LEARNING || - rocker_port->stp_state == BR_STATE_FORWARDING) { - out_pport = rocker_port->pport; - err = rocker_group_l2_interface(rocker_port, trans, flags, - vlan_id, out_pport, pop_vlan); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 group for pport %d\n", - err, out_pport); - return err; - } - } - - /* An L2 interface group for this VLAN to CPU port. - * Add when first port joins this VLAN and destroy when - * last port leaves this VLAN. - */ - - for (i = 0; i < rocker->port_count; i++) { - p = rocker->ports[i]; - if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap)) - ref++; - } - - if ((!adding || ref != 1) && (adding || ref != 0)) - return 0; - - out_pport = 0; - err = rocker_group_l2_interface(rocker_port, trans, flags, - vlan_id, out_pport, pop_vlan); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 group for CPU port\n", err); - return err; - } - - return 0; -} - -static struct rocker_ctrl { - const u8 *eth_dst; - const u8 *eth_dst_mask; - __be16 eth_type; - bool acl; - bool bridge; - bool term; - bool copy_to_cpu; -} rocker_ctrls[] = { - [ROCKER_CTRL_LINK_LOCAL_MCAST] = { - /* pass link local multicast pkts up to CPU for filtering */ - .eth_dst = ll_mac, - .eth_dst_mask = ll_mask, - .acl = true, - }, - [ROCKER_CTRL_LOCAL_ARP] = { - /* pass local ARP pkts up to CPU */ - .eth_dst = zero_mac, - .eth_dst_mask = zero_mac, - .eth_type = htons(ETH_P_ARP), - .acl = true, - }, - [ROCKER_CTRL_IPV4_MCAST] = { - /* pass IPv4 mcast pkts up to CPU, RFC 1112 */ - .eth_dst = ipv4_mcast, - .eth_dst_mask = ipv4_mask, - .eth_type = htons(ETH_P_IP), - .term = true, - .copy_to_cpu = true, - }, - [ROCKER_CTRL_IPV6_MCAST] = { - /* pass IPv6 mcast pkts up to CPU, RFC 2464 */ - .eth_dst = ipv6_mcast, - .eth_dst_mask = ipv6_mask, - .eth_type = htons(ETH_P_IPV6), - .term = true, - .copy_to_cpu = true, - }, - [ROCKER_CTRL_DFLT_BRIDGING] = { - /* flood any pkts on vlan */ - .bridge = true, - .copy_to_cpu = true, - }, - [ROCKER_CTRL_DFLT_OVS] = { - /* pass all pkts up to CPU */ - .eth_dst = zero_mac, - .eth_dst_mask = zero_mac, - .acl = true, - }, -}; - -static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const struct rocker_ctrl *ctrl, __be16 vlan_id) -{ - u32 in_pport = rocker_port->pport; - u32 in_pport_mask = 0xffffffff; - u32 out_pport = 0; - const u8 *eth_src = NULL; - const u8 *eth_src_mask = NULL; - __be16 vlan_id_mask = htons(0xffff); - u8 ip_proto = 0; - u8 ip_proto_mask = 0; - u8 ip_tos = 0; - u8 ip_tos_mask = 0; - u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); - int err; - - err = rocker_flow_tbl_acl(rocker_port, trans, flags, - in_pport, in_pport_mask, - eth_src, eth_src_mask, - ctrl->eth_dst, ctrl->eth_dst_mask, - ctrl->eth_type, - vlan_id, vlan_id_mask, - ip_proto, ip_proto_mask, - ip_tos, ip_tos_mask, - group_id); - - if (err) - netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err); - - return err; -} - -static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - int flags, - const struct rocker_ctrl *ctrl, - __be16 vlan_id) -{ - enum rocker_of_dpa_table_id goto_tbl = - ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; - u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); - u32 tunnel_id = 0; - int err; - - if (!rocker_port_is_bridged(rocker_port)) - return 0; - - err = rocker_flow_tbl_bridge(rocker_port, trans, flags, - ctrl->eth_dst, ctrl->eth_dst_mask, - vlan_id, tunnel_id, - goto_tbl, group_id, ctrl->copy_to_cpu); - - if (err) - netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err); - - return err; -} - -static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const struct rocker_ctrl *ctrl, __be16 vlan_id) -{ - u32 in_pport_mask = 0xffffffff; - __be16 vlan_id_mask = htons(0xffff); - int err; - - if (ntohs(vlan_id) == 0) - vlan_id = rocker_port->internal_vlan_id; - - err = rocker_flow_tbl_term_mac(rocker_port, trans, - rocker_port->pport, in_pport_mask, - ctrl->eth_type, ctrl->eth_dst, - ctrl->eth_dst_mask, vlan_id, - vlan_id_mask, ctrl->copy_to_cpu, - flags); - - if (err) - netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err); - - return err; -} - -static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const struct rocker_ctrl *ctrl, __be16 vlan_id) -{ - if (ctrl->acl) - return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags, - ctrl, vlan_id); - if (ctrl->bridge) - return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags, - ctrl, vlan_id); - - if (ctrl->term) - return rocker_port_ctrl_vlan_term(rocker_port, trans, flags, - ctrl, vlan_id); - - return -EOPNOTSUPP; -} - -static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be16 vlan_id) -{ - int err = 0; - int i; - - for (i = 0; i < ROCKER_CTRL_MAX; i++) { - if (rocker_port->ctrls[i]) { - err = rocker_port_ctrl_vlan(rocker_port, trans, flags, - &rocker_ctrls[i], vlan_id); - if (err) - return err; - } - } - - return err; -} - -static int rocker_port_ctrl(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const struct rocker_ctrl *ctrl) -{ - u16 vid; - int err = 0; - - for (vid = 1; vid < VLAN_N_VID; vid++) { - if (!test_bit(vid, rocker_port->vlan_bitmap)) - continue; - err = rocker_port_ctrl_vlan(rocker_port, trans, flags, - ctrl, htons(vid)); - if (err) - break; - } - - return err; -} - -static int rocker_port_vlan(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, u16 vid) -{ - enum rocker_of_dpa_table_id goto_tbl = - ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; - u32 in_pport = rocker_port->pport; - __be16 vlan_id = htons(vid); - __be16 vlan_id_mask = htons(0xffff); - __be16 internal_vlan_id; - bool untagged; - bool adding = !(flags & ROCKER_OP_FLAG_REMOVE); - int err; - - internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged); - - if (adding && test_bit(ntohs(internal_vlan_id), - rocker_port->vlan_bitmap)) - return 0; /* already added */ - else if (!adding && !test_bit(ntohs(internal_vlan_id), - rocker_port->vlan_bitmap)) - return 0; /* already removed */ - - change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap); - - if (adding) { - err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags, - internal_vlan_id); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port ctrl vlan add\n", err); - goto err_out; - } - } - - err = rocker_port_vlan_l2_groups(rocker_port, trans, flags, - internal_vlan_id, untagged); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 groups\n", err); - goto err_out; - } - - err = rocker_port_vlan_flood_group(rocker_port, trans, flags, - internal_vlan_id); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 flood group\n", err); - goto err_out; - } - - err = rocker_flow_tbl_vlan(rocker_port, trans, flags, - in_pport, vlan_id, vlan_id_mask, - goto_tbl, untagged, internal_vlan_id); - if (err) - netdev_err(rocker_port->dev, - "Error (%d) port VLAN table\n", err); - -err_out: - if (switchdev_trans_ph_prepare(trans)) - change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap); - - return err; -} - -static int rocker_port_ig_tbl(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags) -{ - enum rocker_of_dpa_table_id goto_tbl; - u32 in_pport; - u32 in_pport_mask; - int err; - - /* Normal Ethernet Frames. Matches pkts from any local physical - * ports. Goto VLAN tbl. - */ - - in_pport = 0; - in_pport_mask = 0xffff0000; - goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN; - - err = rocker_flow_tbl_ig_port(rocker_port, trans, flags, - in_pport, in_pport_mask, - goto_tbl); - if (err) - netdev_err(rocker_port->dev, - "Error (%d) ingress port table entry\n", err); - - return err; -} - -struct rocker_fdb_learn_work { - struct work_struct work; - struct rocker_port *rocker_port; - struct switchdev_trans *trans; - int flags; - u8 addr[ETH_ALEN]; - u16 vid; -}; - -static void rocker_port_fdb_learn_work(struct work_struct *work) -{ - const struct rocker_fdb_learn_work *lw = - container_of(work, struct rocker_fdb_learn_work, work); - bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE); - bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED); - struct switchdev_notifier_fdb_info info; - - info.addr = lw->addr; - info.vid = lw->vid; - - rtnl_lock(); - if (learned && removing) - call_switchdev_notifiers(SWITCHDEV_FDB_DEL, - lw->rocker_port->dev, &info.info); - else if (learned && !removing) - call_switchdev_notifiers(SWITCHDEV_FDB_ADD, - lw->rocker_port->dev, &info.info); - rtnl_unlock(); - - rocker_port_kfree(lw->trans, work); -} - -static int rocker_port_fdb_learn(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - const u8 *addr, __be16 vlan_id) -{ - struct rocker_fdb_learn_work *lw; - enum rocker_of_dpa_table_id goto_tbl = - ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; - u32 out_pport = rocker_port->pport; - u32 tunnel_id = 0; - u32 group_id = ROCKER_GROUP_NONE; - bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC); - bool copy_to_cpu = false; - int err; - - if (rocker_port_is_bridged(rocker_port)) - group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); - - if (!(flags & ROCKER_OP_FLAG_REFRESH)) { - err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr, - NULL, vlan_id, tunnel_id, goto_tbl, - group_id, copy_to_cpu); - if (err) - return err; - } - - if (!syncing) - return 0; - - if (!rocker_port_is_bridged(rocker_port)) - return 0; - - lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw)); - if (!lw) - return -ENOMEM; - - INIT_WORK(&lw->work, rocker_port_fdb_learn_work); - - lw->rocker_port = rocker_port; - lw->trans = trans; - lw->flags = flags; - ether_addr_copy(lw->addr, addr); - lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id); - - if (switchdev_trans_ph_prepare(trans)) - rocker_port_kfree(trans, lw); - else - schedule_work(&lw->work); - - return 0; -} - -static struct rocker_fdb_tbl_entry * -rocker_fdb_tbl_find(const struct rocker *rocker, - const struct rocker_fdb_tbl_entry *match) -{ - struct rocker_fdb_tbl_entry *found; - - hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32) - if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0) - return found; - - return NULL; -} - -static int rocker_port_fdb(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - const unsigned char *addr, - __be16 vlan_id, int flags) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_fdb_tbl_entry *fdb; - struct rocker_fdb_tbl_entry *found; - bool removing = (flags & ROCKER_OP_FLAG_REMOVE); - unsigned long lock_flags; - - fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb)); - if (!fdb) - return -ENOMEM; - - fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED); - fdb->touched = jiffies; - fdb->key.rocker_port = rocker_port; - ether_addr_copy(fdb->key.addr, addr); - fdb->key.vlan_id = vlan_id; - fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key)); - - spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); - - found = rocker_fdb_tbl_find(rocker, fdb); - - if (found) { - found->touched = jiffies; - if (removing) { - rocker_port_kfree(trans, fdb); - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - } - } else if (!removing) { - if (!switchdev_trans_ph_prepare(trans)) - hash_add(rocker->fdb_tbl, &fdb->entry, - fdb->key_crc32); - } - - spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); - - /* Check if adding and already exists, or removing and can't find */ - if (!found != !removing) { - rocker_port_kfree(trans, fdb); - if (!found && removing) - return 0; - /* Refreshing existing to update aging timers */ - flags |= ROCKER_OP_FLAG_REFRESH; - } - - return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id); -} - -static int rocker_port_fdb_flush(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_fdb_tbl_entry *found; - unsigned long lock_flags; - struct hlist_node *tmp; - int bkt; - int err = 0; - - if (rocker_port->stp_state == BR_STATE_LEARNING || - rocker_port->stp_state == BR_STATE_FORWARDING) - return 0; - - flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE; - - spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); - - hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { - if (found->key.rocker_port != rocker_port) - continue; - if (!found->learned) - continue; - err = rocker_port_fdb_learn(rocker_port, trans, flags, - found->key.addr, - found->key.vlan_id); - if (err) - goto err_out; - if (!switchdev_trans_ph_prepare(trans)) - hash_del(&found->entry); - } - -err_out: - spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); - - return err; -} - -static void rocker_fdb_cleanup(unsigned long data) -{ - struct rocker *rocker = (struct rocker *)data; - struct rocker_port *rocker_port; - struct rocker_fdb_tbl_entry *entry; - struct hlist_node *tmp; - unsigned long next_timer = jiffies + rocker->ageing_time; - unsigned long expires; - unsigned long lock_flags; - int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE | - ROCKER_OP_FLAG_LEARNED; - int bkt; - - spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); - - hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) { - if (!entry->learned) - continue; - rocker_port = entry->key.rocker_port; - expires = entry->touched + rocker_port->ageing_time; - if (time_before_eq(expires, jiffies)) { - rocker_port_fdb_learn(rocker_port, NULL, - flags, entry->key.addr, - entry->key.vlan_id); - hash_del(&entry->entry); - } else if (time_before(expires, next_timer)) { - next_timer = expires; - } - } - - spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); - - mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer)); -} - -static int rocker_port_router_mac(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - __be16 vlan_id) -{ - u32 in_pport_mask = 0xffffffff; - __be16 eth_type; - const u8 *dst_mac_mask = ff_mac; - __be16 vlan_id_mask = htons(0xffff); - bool copy_to_cpu = false; - int err; - - if (ntohs(vlan_id) == 0) - vlan_id = rocker_port->internal_vlan_id; - - eth_type = htons(ETH_P_IP); - err = rocker_flow_tbl_term_mac(rocker_port, trans, - rocker_port->pport, in_pport_mask, - eth_type, rocker_port->dev->dev_addr, - dst_mac_mask, vlan_id, vlan_id_mask, - copy_to_cpu, flags); - if (err) - return err; - - eth_type = htons(ETH_P_IPV6); - err = rocker_flow_tbl_term_mac(rocker_port, trans, - rocker_port->pport, in_pport_mask, - eth_type, rocker_port->dev->dev_addr, - dst_mac_mask, vlan_id, vlan_id_mask, - copy_to_cpu, flags); - - return err; -} - -static int rocker_port_fwding(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags) -{ - bool pop_vlan; - u32 out_pport; - __be16 vlan_id; - u16 vid; - int err; - - /* Port will be forwarding-enabled if its STP state is LEARNING - * or FORWARDING. Traffic from CPU can still egress, regardless of - * port STP state. Use L2 interface group on port VLANs as a way - * to toggle port forwarding: if forwarding is disabled, L2 - * interface group will not exist. - */ - - if (rocker_port->stp_state != BR_STATE_LEARNING && - rocker_port->stp_state != BR_STATE_FORWARDING) - flags |= ROCKER_OP_FLAG_REMOVE; - - out_pport = rocker_port->pport; - for (vid = 1; vid < VLAN_N_VID; vid++) { - if (!test_bit(vid, rocker_port->vlan_bitmap)) - continue; - vlan_id = htons(vid); - pop_vlan = rocker_vlan_id_is_internal(vlan_id); - err = rocker_group_l2_interface(rocker_port, trans, flags, - vlan_id, out_pport, pop_vlan); - if (err) { - netdev_err(rocker_port->dev, - "Error (%d) port VLAN l2 group for pport %d\n", - err, out_pport); - return err; - } - } - - return 0; -} - -static int rocker_port_stp_update(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags, - u8 state) -{ - bool want[ROCKER_CTRL_MAX] = { 0, }; - bool prev_ctrls[ROCKER_CTRL_MAX]; - u8 uninitialized_var(prev_state); - int err; - int i; - - if (switchdev_trans_ph_prepare(trans)) { - memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls)); - prev_state = rocker_port->stp_state; - } - - if (rocker_port->stp_state == state) - return 0; - - rocker_port->stp_state = state; - - switch (state) { - case BR_STATE_DISABLED: - /* port is completely disabled */ - break; - case BR_STATE_LISTENING: - case BR_STATE_BLOCKING: - want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true; - break; - case BR_STATE_LEARNING: - case BR_STATE_FORWARDING: - if (!rocker_port_is_ovsed(rocker_port)) - want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true; - want[ROCKER_CTRL_IPV4_MCAST] = true; - want[ROCKER_CTRL_IPV6_MCAST] = true; - if (rocker_port_is_bridged(rocker_port)) - want[ROCKER_CTRL_DFLT_BRIDGING] = true; - else if (rocker_port_is_ovsed(rocker_port)) - want[ROCKER_CTRL_DFLT_OVS] = true; - else - want[ROCKER_CTRL_LOCAL_ARP] = true; - break; - } - - for (i = 0; i < ROCKER_CTRL_MAX; i++) { - if (want[i] != rocker_port->ctrls[i]) { - int ctrl_flags = flags | - (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE); - err = rocker_port_ctrl(rocker_port, trans, ctrl_flags, - &rocker_ctrls[i]); - if (err) - goto err_out; - rocker_port->ctrls[i] = want[i]; - } - } - - err = rocker_port_fdb_flush(rocker_port, trans, flags); - if (err) - goto err_out; - - err = rocker_port_fwding(rocker_port, trans, flags); - -err_out: - if (switchdev_trans_ph_prepare(trans)) { - memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls)); - rocker_port->stp_state = prev_state; - } - - return err; -} - -static int rocker_port_fwd_enable(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags) -{ - if (rocker_port_is_bridged(rocker_port)) - /* bridge STP will enable port */ - return 0; - - /* port is not bridged, so simulate going to FORWARDING state */ - return rocker_port_stp_update(rocker_port, trans, flags, - BR_STATE_FORWARDING); -} - -static int rocker_port_fwd_disable(struct rocker_port *rocker_port, - struct switchdev_trans *trans, int flags) -{ - if (rocker_port_is_bridged(rocker_port)) - /* bridge STP will disable port */ - return 0; - - /* port is not bridged, so simulate going to DISABLED state */ - return rocker_port_stp_update(rocker_port, trans, flags, - BR_STATE_DISABLED); -} - -static struct rocker_internal_vlan_tbl_entry * -rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex) -{ - struct rocker_internal_vlan_tbl_entry *found; - - hash_for_each_possible(rocker->internal_vlan_tbl, found, - entry, ifindex) { - if (found->ifindex == ifindex) - return found; - } - - return NULL; -} - -static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port, - int ifindex) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_internal_vlan_tbl_entry *entry; - struct rocker_internal_vlan_tbl_entry *found; - unsigned long lock_flags; - int i; - - entry = kzalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - return 0; - - entry->ifindex = ifindex; - - spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags); - - found = rocker_internal_vlan_tbl_find(rocker, ifindex); - if (found) { - kfree(entry); - goto found; - } - - found = entry; - hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex); - - for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) { - if (test_and_set_bit(i, rocker->internal_vlan_bitmap)) - continue; - found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i); - goto found; - } - - netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n"); - -found: - found->ref_count++; - spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags); - - return found->vlan_id; -} - -static void -rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port, - int ifindex) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_internal_vlan_tbl_entry *found; - unsigned long lock_flags; - unsigned long bit; - - spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags); - - found = rocker_internal_vlan_tbl_find(rocker, ifindex); - if (!found) { - netdev_err(rocker_port->dev, - "ifindex (%d) not found in internal VLAN tbl\n", - ifindex); - goto not_found; - } - - if (--found->ref_count <= 0) { - bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE; - clear_bit(bit, rocker->internal_vlan_bitmap); - hash_del(&found->entry); - kfree(found); - } - -not_found: - spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags); -} - -static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, - struct switchdev_trans *trans, __be32 dst, - int dst_len, const struct fib_info *fi, - u32 tb_id, int flags) -{ - const struct fib_nh *nh; - __be16 eth_type = htons(ETH_P_IP); - __be32 dst_mask = inet_make_mask(dst_len); - __be16 internal_vlan_id = rocker_port->internal_vlan_id; - u32 priority = fi->fib_priority; - enum rocker_of_dpa_table_id goto_tbl = - ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; - u32 group_id; - bool nh_on_port; - bool has_gw; - u32 index; - int err; - - /* XXX support ECMP */ - - nh = fi->fib_nh; - nh_on_port = (fi->fib_dev == rocker_port->dev); - has_gw = !!nh->nh_gw; - - if (has_gw && nh_on_port) { - err = rocker_port_ipv4_nh(rocker_port, trans, flags, - nh->nh_gw, &index); - if (err) - return err; - - group_id = ROCKER_GROUP_L3_UNICAST(index); - } else { - /* Send to CPU for processing */ - group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0); - } - - err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst, - dst_mask, priority, goto_tbl, - group_id, flags); - if (err) - netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n", - err, &dst); - - return err; -} - -/***************** - * Net device ops - *****************/ - -static int rocker_port_open(struct net_device *dev) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - int err; - - err = rocker_port_dma_rings_init(rocker_port); - if (err) - return err; - - err = request_irq(rocker_msix_tx_vector(rocker_port), - rocker_tx_irq_handler, 0, - rocker_driver_name, rocker_port); - if (err) { - netdev_err(rocker_port->dev, "cannot assign tx irq\n"); - goto err_request_tx_irq; - } - - err = request_irq(rocker_msix_rx_vector(rocker_port), - rocker_rx_irq_handler, 0, - rocker_driver_name, rocker_port); - if (err) { - netdev_err(rocker_port->dev, "cannot assign rx irq\n"); - goto err_request_rx_irq; - } - - err = rocker_port_fwd_enable(rocker_port, NULL, 0); - if (err) - goto err_fwd_enable; - - napi_enable(&rocker_port->napi_tx); - napi_enable(&rocker_port->napi_rx); - if (!dev->proto_down) - rocker_port_set_enable(rocker_port, true); - netif_start_queue(dev); - return 0; - -err_fwd_enable: - free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); -err_request_rx_irq: - free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); -err_request_tx_irq: - rocker_port_dma_rings_fini(rocker_port); - return err; -} - -static int rocker_port_stop(struct net_device *dev) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - - netif_stop_queue(dev); - rocker_port_set_enable(rocker_port, false); - napi_disable(&rocker_port->napi_rx); - napi_disable(&rocker_port->napi_tx); - rocker_port_fwd_disable(rocker_port, NULL, - ROCKER_OP_FLAG_NOWAIT); - free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); - free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); - rocker_port_dma_rings_fini(rocker_port); - - return 0; -} - -static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info) -{ - const struct rocker *rocker = rocker_port->rocker; - struct pci_dev *pdev = rocker->pdev; - const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; - struct rocker_tlv *attr; - int rem; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); - if (!attrs[ROCKER_TLV_TX_FRAGS]) - return; - rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { - const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; - dma_addr_t dma_handle; - size_t len; - - if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) - continue; - rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, - attr); - if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || - !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) - continue; - dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); - len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); - pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE); - } -} - -static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - char *buf, size_t buf_len) -{ - const struct rocker *rocker = rocker_port->rocker; - struct pci_dev *pdev = rocker->pdev; - dma_addr_t dma_handle; - struct rocker_tlv *frag; - - dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE); - if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) { - if (net_ratelimit()) - netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); - return -EIO; - } - frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); - if (!frag) - goto unmap_frag; - if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, - dma_handle)) - goto nest_cancel; - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, - buf_len)) - goto nest_cancel; - rocker_tlv_nest_end(desc_info, frag); - return 0; - -nest_cancel: - rocker_tlv_nest_cancel(desc_info, frag); -unmap_frag: - pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE); - return -EMSGSIZE; -} - -static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - struct rocker *rocker = rocker_port->rocker; - struct rocker_desc_info *desc_info; - struct rocker_tlv *frags; - int i; - int err; - - desc_info = rocker_desc_head_get(&rocker_port->tx_ring); - if (unlikely(!desc_info)) { - if (net_ratelimit()) - netdev_err(dev, "tx ring full when queue awake\n"); - return NETDEV_TX_BUSY; - } - - rocker_desc_cookie_ptr_set(desc_info, skb); - - frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); - if (!frags) - goto out; - err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, - skb->data, skb_headlen(skb)); - if (err) - goto nest_cancel; - if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) { - err = skb_linearize(skb); - if (err) - goto unmap_frags; - } - - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - - err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, - skb_frag_address(frag), - skb_frag_size(frag)); - if (err) - goto unmap_frags; - } - rocker_tlv_nest_end(desc_info, frags); - - rocker_desc_gen_clear(desc_info); - rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); - - desc_info = rocker_desc_head_get(&rocker_port->tx_ring); - if (!desc_info) - netif_stop_queue(dev); - - return NETDEV_TX_OK; - -unmap_frags: - rocker_tx_desc_frags_unmap(rocker_port, desc_info); -nest_cancel: - rocker_tlv_nest_cancel(desc_info, frags); -out: - dev_kfree_skb(skb); - dev->stats.tx_dropped++; - - return NETDEV_TX_OK; -} - -static int rocker_port_set_mac_address(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - struct rocker_port *rocker_port = netdev_priv(dev); - int err; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); - if (err) - return err; - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - return 0; -} - -static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - int running = netif_running(dev); - int err; - -#define ROCKER_PORT_MIN_MTU 68 -#define ROCKER_PORT_MAX_MTU 9000 - - if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU) - return -EINVAL; - - if (running) - rocker_port_stop(dev); - - netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); - dev->mtu = new_mtu; - - err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); - if (err) - return err; - - if (running) - err = rocker_port_open(dev); - - return err; -} - -static int rocker_port_get_phys_port_name(struct net_device *dev, - char *buf, size_t len) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - struct port_name name = { .buf = buf, .len = len }; - int err; - - err = rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_get_port_settings_prep, NULL, - rocker_cmd_get_port_settings_phys_name_proc, - &name); - - return err ? -EOPNOTSUPP : 0; -} - -static int rocker_port_change_proto_down(struct net_device *dev, - bool proto_down) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - - if (rocker_port->dev->flags & IFF_UP) - rocker_port_set_enable(rocker_port, !proto_down); - rocker_port->dev->proto_down = proto_down; - return 0; -} - -static void rocker_port_neigh_destroy(struct neighbour *n) -{ - struct rocker_port *rocker_port = netdev_priv(n->dev); - int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT; - __be32 ip_addr = *(__be32 *)n->primary_key; - - rocker_port_ipv4_neigh(rocker_port, NULL, - flags, ip_addr, n->ha); -} - -static const struct net_device_ops rocker_port_netdev_ops = { - .ndo_open = rocker_port_open, - .ndo_stop = rocker_port_stop, - .ndo_start_xmit = rocker_port_xmit, - .ndo_set_mac_address = rocker_port_set_mac_address, - .ndo_change_mtu = rocker_port_change_mtu, - .ndo_bridge_getlink = switchdev_port_bridge_getlink, - .ndo_bridge_setlink = switchdev_port_bridge_setlink, - .ndo_bridge_dellink = switchdev_port_bridge_dellink, - .ndo_fdb_add = switchdev_port_fdb_add, - .ndo_fdb_del = switchdev_port_fdb_del, - .ndo_fdb_dump = switchdev_port_fdb_dump, - .ndo_get_phys_port_name = rocker_port_get_phys_port_name, - .ndo_change_proto_down = rocker_port_change_proto_down, - .ndo_neigh_destroy = rocker_port_neigh_destroy, -}; - -/******************** - * swdev interface - ********************/ - -static int rocker_port_attr_get(struct net_device *dev, - struct switchdev_attr *attr) -{ - const struct rocker_port *rocker_port = netdev_priv(dev); - const struct rocker *rocker = rocker_port->rocker; - - switch (attr->id) { - case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: - attr->u.ppid.id_len = sizeof(rocker->hw.id); - memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len); - break; - case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: - attr->u.brport_flags = rocker_port->brport_flags; - break; - default: - return -EOPNOTSUPP; - } - - return 0; -} - -static int rocker_port_brport_flags_set(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - unsigned long brport_flags) -{ - unsigned long orig_flags; - int err = 0; - - orig_flags = rocker_port->brport_flags; - rocker_port->brport_flags = brport_flags; - if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING) - err = rocker_port_set_learning(rocker_port, trans); - - if (switchdev_trans_ph_prepare(trans)) - rocker_port->brport_flags = orig_flags; - - return err; -} - -static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - u32 ageing_time) -{ - struct rocker *rocker = rocker_port->rocker; - - if (!switchdev_trans_ph_prepare(trans)) { - rocker_port->ageing_time = clock_t_to_jiffies(ageing_time); - if (rocker_port->ageing_time < rocker->ageing_time) - rocker->ageing_time = rocker_port->ageing_time; - mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies); - } - - return 0; -} - -static int rocker_port_attr_set(struct net_device *dev, - const struct switchdev_attr *attr, - struct switchdev_trans *trans) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - int err = 0; - - switch (attr->id) { - case SWITCHDEV_ATTR_ID_PORT_STP_STATE: - err = rocker_port_stp_update(rocker_port, trans, 0, - attr->u.stp_state); - break; - case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: - err = rocker_port_brport_flags_set(rocker_port, trans, - attr->u.brport_flags); - break; - case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: - err = rocker_port_bridge_ageing_time(rocker_port, trans, - attr->u.ageing_time); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static int rocker_port_vlan_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - u16 vid, u16 flags) -{ - int err; - - /* XXX deal with flags for PVID and untagged */ - - err = rocker_port_vlan(rocker_port, trans, 0, vid); - if (err) - return err; - - err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid)); - if (err) - rocker_port_vlan(rocker_port, trans, - ROCKER_OP_FLAG_REMOVE, vid); - - return err; -} - -static int rocker_port_vlans_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - const struct switchdev_obj_port_vlan *vlan) -{ - u16 vid; - int err; - - for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { - err = rocker_port_vlan_add(rocker_port, trans, - vid, vlan->flags); - if (err) - return err; - } - - return 0; -} - -static int rocker_port_fdb_add(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - const struct switchdev_obj_port_fdb *fdb) -{ - __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL); - int flags = 0; - - if (!rocker_port_is_bridged(rocker_port)) - return -EINVAL; - - return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags); -} - -static int rocker_port_obj_add(struct net_device *dev, - const struct switchdev_obj *obj, - struct switchdev_trans *trans) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - const struct switchdev_obj_ipv4_fib *fib4; - int err = 0; - - switch (obj->id) { - case SWITCHDEV_OBJ_ID_PORT_VLAN: - err = rocker_port_vlans_add(rocker_port, trans, - SWITCHDEV_OBJ_PORT_VLAN(obj)); - break; - case SWITCHDEV_OBJ_ID_IPV4_FIB: - fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj); - err = rocker_port_fib_ipv4(rocker_port, trans, - htonl(fib4->dst), fib4->dst_len, - &fib4->fi, fib4->tb_id, 0); - break; - case SWITCHDEV_OBJ_ID_PORT_FDB: - err = rocker_port_fdb_add(rocker_port, trans, - SWITCHDEV_OBJ_PORT_FDB(obj)); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static int rocker_port_vlan_del(struct rocker_port *rocker_port, - u16 vid, u16 flags) -{ - int err; - - err = rocker_port_router_mac(rocker_port, NULL, - ROCKER_OP_FLAG_REMOVE, htons(vid)); - if (err) - return err; - - return rocker_port_vlan(rocker_port, NULL, - ROCKER_OP_FLAG_REMOVE, vid); -} - -static int rocker_port_vlans_del(struct rocker_port *rocker_port, - const struct switchdev_obj_port_vlan *vlan) -{ - u16 vid; - int err; - - for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { - err = rocker_port_vlan_del(rocker_port, vid, vlan->flags); - if (err) - return err; - } - - return 0; -} - -static int rocker_port_fdb_del(struct rocker_port *rocker_port, - struct switchdev_trans *trans, - const struct switchdev_obj_port_fdb *fdb) -{ - __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL); - int flags = ROCKER_OP_FLAG_REMOVE; - - if (!rocker_port_is_bridged(rocker_port)) - return -EINVAL; - - return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags); -} - -static int rocker_port_obj_del(struct net_device *dev, - const struct switchdev_obj *obj) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - const struct switchdev_obj_ipv4_fib *fib4; - int err = 0; - - switch (obj->id) { - case SWITCHDEV_OBJ_ID_PORT_VLAN: - err = rocker_port_vlans_del(rocker_port, - SWITCHDEV_OBJ_PORT_VLAN(obj)); - break; - case SWITCHDEV_OBJ_ID_IPV4_FIB: - fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj); - err = rocker_port_fib_ipv4(rocker_port, NULL, - htonl(fib4->dst), fib4->dst_len, - &fib4->fi, fib4->tb_id, - ROCKER_OP_FLAG_REMOVE); - break; - case SWITCHDEV_OBJ_ID_PORT_FDB: - err = rocker_port_fdb_del(rocker_port, NULL, - SWITCHDEV_OBJ_PORT_FDB(obj)); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static int rocker_port_fdb_dump(const struct rocker_port *rocker_port, - struct switchdev_obj_port_fdb *fdb, - switchdev_obj_dump_cb_t *cb) -{ - struct rocker *rocker = rocker_port->rocker; - struct rocker_fdb_tbl_entry *found; - struct hlist_node *tmp; - unsigned long lock_flags; - int bkt; - int err = 0; - - spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags); - hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) { - if (found->key.rocker_port != rocker_port) - continue; - ether_addr_copy(fdb->addr, found->key.addr); - fdb->ndm_state = NUD_REACHABLE; - fdb->vid = rocker_port_vlan_to_vid(rocker_port, - found->key.vlan_id); - err = cb(&fdb->obj); - if (err) - break; - } - spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags); - - return err; -} - -static int rocker_port_vlan_dump(const struct rocker_port *rocker_port, - struct switchdev_obj_port_vlan *vlan, - switchdev_obj_dump_cb_t *cb) -{ - u16 vid; - int err = 0; - - for (vid = 1; vid < VLAN_N_VID; vid++) { - if (!test_bit(vid, rocker_port->vlan_bitmap)) - continue; - vlan->flags = 0; - if (rocker_vlan_id_is_internal(htons(vid))) - vlan->flags |= BRIDGE_VLAN_INFO_PVID; - vlan->vid_begin = vlan->vid_end = vid; - err = cb(&vlan->obj); - if (err) - break; - } - - return err; -} - -static int rocker_port_obj_dump(struct net_device *dev, - struct switchdev_obj *obj, - switchdev_obj_dump_cb_t *cb) -{ - const struct rocker_port *rocker_port = netdev_priv(dev); - int err = 0; - - switch (obj->id) { - case SWITCHDEV_OBJ_ID_PORT_FDB: - err = rocker_port_fdb_dump(rocker_port, - SWITCHDEV_OBJ_PORT_FDB(obj), cb); - break; - case SWITCHDEV_OBJ_ID_PORT_VLAN: - err = rocker_port_vlan_dump(rocker_port, - SWITCHDEV_OBJ_PORT_VLAN(obj), cb); - break; - default: - err = -EOPNOTSUPP; - break; - } - - return err; -} - -static const struct switchdev_ops rocker_port_switchdev_ops = { - .switchdev_port_attr_get = rocker_port_attr_get, - .switchdev_port_attr_set = rocker_port_attr_set, - .switchdev_port_obj_add = rocker_port_obj_add, - .switchdev_port_obj_del = rocker_port_obj_del, - .switchdev_port_obj_dump = rocker_port_obj_dump, -}; - -/******************** - * ethtool interface - ********************/ - -static int rocker_port_get_settings(struct net_device *dev, - struct ethtool_cmd *ecmd) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - - return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); -} - -static int rocker_port_set_settings(struct net_device *dev, - struct ethtool_cmd *ecmd) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - - return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); -} - -static void rocker_port_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *drvinfo) -{ - strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); - strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); -} - -static struct rocker_port_stats { - char str[ETH_GSTRING_LEN]; - int type; -} rocker_port_stats[] = { - { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, - { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, - { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, - { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, - - { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, - { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, - { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, - { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, -}; - -#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) - -static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, - u8 *data) -{ - u8 *p = data; - int i; - - switch (stringset) { - case ETH_SS_STATS: - for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { - memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } - break; - } -} - -static int -rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info, - void *priv) -{ - struct rocker_tlv *cmd_stats; - - if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, - ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) - return -EMSGSIZE; - - cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); - if (!cmd_stats) - return -EMSGSIZE; - - if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, - rocker_port->pport)) - return -EMSGSIZE; - - rocker_tlv_nest_end(desc_info, cmd_stats); - - return 0; -} - -static int -rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port, - const struct rocker_desc_info *desc_info, - void *priv) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; - const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; - const struct rocker_tlv *pattr; - u32 pport; - u64 *data = priv; - int i; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); - - if (!attrs[ROCKER_TLV_CMD_INFO]) - return -EIO; - - rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, - attrs[ROCKER_TLV_CMD_INFO]); - - if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) - return -EIO; - - pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); - if (pport != rocker_port->pport) - return -EIO; - - for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { - pattr = stats_attrs[rocker_port_stats[i].type]; - if (!pattr) - continue; - - data[i] = rocker_tlv_get_u64(pattr); - } - - return 0; -} - -static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, - void *priv) -{ - return rocker_cmd_exec(rocker_port, NULL, 0, - rocker_cmd_get_port_stats_prep, NULL, - rocker_cmd_get_port_stats_ethtool_proc, - priv); -} - -static void rocker_port_get_stats(struct net_device *dev, - struct ethtool_stats *stats, u64 *data) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - - if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { - int i; - - for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) - data[i] = 0; - } -} - -static int rocker_port_get_sset_count(struct net_device *netdev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return ROCKER_PORT_STATS_LEN; - default: - return -EOPNOTSUPP; - } -} - -static const struct ethtool_ops rocker_port_ethtool_ops = { - .get_settings = rocker_port_get_settings, - .set_settings = rocker_port_set_settings, - .get_drvinfo = rocker_port_get_drvinfo, - .get_link = ethtool_op_get_link, - .get_strings = rocker_port_get_strings, - .get_ethtool_stats = rocker_port_get_stats, - .get_sset_count = rocker_port_get_sset_count, -}; - -/***************** - * NAPI interface - *****************/ - -static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) -{ - return container_of(napi, struct rocker_port, napi_tx); -} - -static int rocker_port_poll_tx(struct napi_struct *napi, int budget) -{ - struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); - const struct rocker *rocker = rocker_port->rocker; - const struct rocker_desc_info *desc_info; - u32 credits = 0; - int err; - - /* Cleanup tx descriptors */ - while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { - struct sk_buff *skb; - - err = rocker_desc_err(desc_info); - if (err && net_ratelimit()) - netdev_err(rocker_port->dev, "tx desc received with err %d\n", - err); - rocker_tx_desc_frags_unmap(rocker_port, desc_info); - - skb = rocker_desc_cookie_ptr_get(desc_info); - if (err == 0) { - rocker_port->dev->stats.tx_packets++; - rocker_port->dev->stats.tx_bytes += skb->len; - } else { - rocker_port->dev->stats.tx_errors++; - } - - dev_kfree_skb_any(skb); - credits++; - } - - if (credits && netif_queue_stopped(rocker_port->dev)) - netif_wake_queue(rocker_port->dev); - - napi_complete(napi); - rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); - - return 0; -} - -static int rocker_port_rx_proc(const struct rocker *rocker, - const struct rocker_port *rocker_port, - struct rocker_desc_info *desc_info) -{ - const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; - struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); - size_t rx_len; - u16 rx_flags = 0; - - if (!skb) - return -ENOENT; - - rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); - if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) - return -EINVAL; - if (attrs[ROCKER_TLV_RX_FLAGS]) - rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]); - - rocker_dma_rx_ring_skb_unmap(rocker, attrs); - - rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); - skb_put(skb, rx_len); - skb->protocol = eth_type_trans(skb, rocker_port->dev); - - if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD) - skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark; - - rocker_port->dev->stats.rx_packets++; - rocker_port->dev->stats.rx_bytes += skb->len; - - netif_receive_skb(skb); - - return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info); -} - -static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) -{ - return container_of(napi, struct rocker_port, napi_rx); -} - -static int rocker_port_poll_rx(struct napi_struct *napi, int budget) -{ - struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); - const struct rocker *rocker = rocker_port->rocker; - struct rocker_desc_info *desc_info; - u32 credits = 0; - int err; - - /* Process rx descriptors */ - while (credits < budget && - (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { - err = rocker_desc_err(desc_info); - if (err) { - if (net_ratelimit()) - netdev_err(rocker_port->dev, "rx desc received with err %d\n", - err); - } else { - err = rocker_port_rx_proc(rocker, rocker_port, - desc_info); - if (err && net_ratelimit()) - netdev_err(rocker_port->dev, "rx processing failed with err %d\n", - err); - } - if (err) - rocker_port->dev->stats.rx_errors++; - - rocker_desc_gen_clear(desc_info); - rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); - credits++; - } - - if (credits < budget) - napi_complete(napi); - - rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); - - return credits; -} - -/***************** - * PCI driver ops - *****************/ - -static void rocker_carrier_init(const struct rocker_port *rocker_port) -{ - const struct rocker *rocker = rocker_port->rocker; - u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); - bool link_up; - - link_up = link_status & (1 << rocker_port->pport); - if (link_up) - netif_carrier_on(rocker_port->dev); - else - netif_carrier_off(rocker_port->dev); -} - -static void rocker_remove_ports(const struct rocker *rocker) -{ - struct rocker_port *rocker_port; - int i; - - for (i = 0; i < rocker->port_count; i++) { - rocker_port = rocker->ports[i]; - if (!rocker_port) - continue; - rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE); - unregister_netdev(rocker_port->dev); - free_netdev(rocker_port->dev); - } - kfree(rocker->ports); -} - -static void rocker_port_dev_addr_init(struct rocker_port *rocker_port) -{ - const struct rocker *rocker = rocker_port->rocker; - const struct pci_dev *pdev = rocker->pdev; - int err; - - err = rocker_cmd_get_port_settings_macaddr(rocker_port, - rocker_port->dev->dev_addr); - if (err) { - dev_warn(&pdev->dev, "failed to get mac address, using random\n"); - eth_hw_addr_random(rocker_port->dev); - } -} - -static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) -{ - const struct pci_dev *pdev = rocker->pdev; - struct rocker_port *rocker_port; - struct net_device *dev; - u16 untagged_vid = 0; - int err; - - dev = alloc_etherdev(sizeof(struct rocker_port)); - if (!dev) - return -ENOMEM; - rocker_port = netdev_priv(dev); - rocker_port->dev = dev; - rocker_port->rocker = rocker; - rocker_port->port_number = port_number; - rocker_port->pport = port_number + 1; - rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC; - rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME; - - rocker_port_dev_addr_init(rocker_port); - dev->netdev_ops = &rocker_port_netdev_ops; - dev->ethtool_ops = &rocker_port_ethtool_ops; - dev->switchdev_ops = &rocker_port_switchdev_ops; - netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, - NAPI_POLL_WEIGHT); - netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, - NAPI_POLL_WEIGHT); - rocker_carrier_init(rocker_port); - - dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG; - - err = register_netdev(dev); - if (err) { - dev_err(&pdev->dev, "register_netdev failed\n"); - goto err_register_netdev; - } - rocker->ports[port_number] = rocker_port; - - switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false); - - rocker_port_set_learning(rocker_port, NULL); - - err = rocker_port_ig_tbl(rocker_port, NULL, 0); - if (err) { - netdev_err(rocker_port->dev, "install ig port table failed\n"); - goto err_port_ig_tbl; - } - - rocker_port->internal_vlan_id = - rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex); - - err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0); - if (err) { - netdev_err(rocker_port->dev, "install untagged VLAN failed\n"); - goto err_untagged_vlan; - } - - return 0; - -err_untagged_vlan: - rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE); -err_port_ig_tbl: - rocker->ports[port_number] = NULL; - unregister_netdev(dev); -err_register_netdev: - free_netdev(dev); - return err; -} - -static int rocker_probe_ports(struct rocker *rocker) -{ - int i; - size_t alloc_size; - int err; - - alloc_size = sizeof(struct rocker_port *) * rocker->port_count; - rocker->ports = kzalloc(alloc_size, GFP_KERNEL); - if (!rocker->ports) - return -ENOMEM; - for (i = 0; i < rocker->port_count; i++) { - err = rocker_probe_port(rocker, i); - if (err) - goto remove_ports; - } - return 0; - -remove_ports: - rocker_remove_ports(rocker); - return err; -} - -static int rocker_msix_init(struct rocker *rocker) -{ - struct pci_dev *pdev = rocker->pdev; - int msix_entries; - int i; - int err; - - msix_entries = pci_msix_vec_count(pdev); - if (msix_entries < 0) - return msix_entries; - - if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) - return -EINVAL; - - rocker->msix_entries = kmalloc_array(msix_entries, - sizeof(struct msix_entry), - GFP_KERNEL); - if (!rocker->msix_entries) - return -ENOMEM; - - for (i = 0; i < msix_entries; i++) - rocker->msix_entries[i].entry = i; - - err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); - if (err < 0) - goto err_enable_msix; - - return 0; - -err_enable_msix: - kfree(rocker->msix_entries); - return err; -} - -static void rocker_msix_fini(const struct rocker *rocker) -{ - pci_disable_msix(rocker->pdev); - kfree(rocker->msix_entries); -} - -static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) -{ - struct rocker *rocker; - int err; - - rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); - if (!rocker) - return -ENOMEM; - - err = pci_enable_device(pdev); - if (err) { - dev_err(&pdev->dev, "pci_enable_device failed\n"); - goto err_pci_enable_device; - } - - err = pci_request_regions(pdev, rocker_driver_name); - if (err) { - dev_err(&pdev->dev, "pci_request_regions failed\n"); - goto err_pci_request_regions; - } - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (err) { - dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); - goto err_pci_set_dma_mask; - } - } else { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); - goto err_pci_set_dma_mask; - } - } - - if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { - dev_err(&pdev->dev, "invalid PCI region size\n"); - err = -EINVAL; - goto err_pci_resource_len_check; - } - - rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - if (!rocker->hw_addr) { - dev_err(&pdev->dev, "ioremap failed\n"); - err = -EIO; - goto err_ioremap; - } - pci_set_master(pdev); - - rocker->pdev = pdev; - pci_set_drvdata(pdev, rocker); - - rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); - - err = rocker_msix_init(rocker); - if (err) { - dev_err(&pdev->dev, "MSI-X init failed\n"); - goto err_msix_init; - } - - err = rocker_basic_hw_test(rocker); - if (err) { - dev_err(&pdev->dev, "basic hw test failed\n"); - goto err_basic_hw_test; - } - - rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); - - err = rocker_dma_rings_init(rocker); - if (err) - goto err_dma_rings_init; - - err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), - rocker_cmd_irq_handler, 0, - rocker_driver_name, rocker); - if (err) { - dev_err(&pdev->dev, "cannot assign cmd irq\n"); - goto err_request_cmd_irq; - } - - err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), - rocker_event_irq_handler, 0, - rocker_driver_name, rocker); - if (err) { - dev_err(&pdev->dev, "cannot assign event irq\n"); - goto err_request_event_irq; - } - - rocker->hw.id = rocker_read64(rocker, SWITCH_ID); - - err = rocker_init_tbls(rocker); - if (err) { - dev_err(&pdev->dev, "cannot init rocker tables\n"); - goto err_init_tbls; - } - - rocker->ageing_time = BR_DEFAULT_AGEING_TIME; - setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup, - (unsigned long) rocker); - mod_timer(&rocker->fdb_cleanup_timer, jiffies); - - rocker->ageing_time = BR_DEFAULT_AGEING_TIME; - - err = rocker_probe_ports(rocker); - if (err) { - dev_err(&pdev->dev, "failed to probe ports\n"); - goto err_probe_ports; - } - - dev_info(&pdev->dev, "Rocker switch with id %*phN\n", - (int)sizeof(rocker->hw.id), &rocker->hw.id); - - return 0; - -err_probe_ports: - del_timer_sync(&rocker->fdb_cleanup_timer); - rocker_free_tbls(rocker); -err_init_tbls: - free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); -err_request_event_irq: - free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); -err_request_cmd_irq: - rocker_dma_rings_fini(rocker); -err_dma_rings_init: -err_basic_hw_test: - rocker_msix_fini(rocker); -err_msix_init: - iounmap(rocker->hw_addr); -err_ioremap: -err_pci_resource_len_check: -err_pci_set_dma_mask: - pci_release_regions(pdev); -err_pci_request_regions: - pci_disable_device(pdev); -err_pci_enable_device: - kfree(rocker); - return err; -} - -static void rocker_remove(struct pci_dev *pdev) -{ - struct rocker *rocker = pci_get_drvdata(pdev); - - del_timer_sync(&rocker->fdb_cleanup_timer); - rocker_free_tbls(rocker); - rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); - rocker_remove_ports(rocker); - free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); - free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); - rocker_dma_rings_fini(rocker); - rocker_msix_fini(rocker); - iounmap(rocker->hw_addr); - pci_release_regions(rocker->pdev); - pci_disable_device(rocker->pdev); - kfree(rocker); -} - -static struct pci_driver rocker_pci_driver = { - .name = rocker_driver_name, - .id_table = rocker_pci_id_table, - .probe = rocker_probe, - .remove = rocker_remove, -}; - -/************************************ - * Net device notifier event handler - ************************************/ - -static bool rocker_port_dev_check(const struct net_device *dev) -{ - return dev->netdev_ops == &rocker_port_netdev_ops; -} - -static int rocker_port_bridge_join(struct rocker_port *rocker_port, - struct net_device *bridge) -{ - u16 untagged_vid = 0; - int err; - - /* Port is joining bridge, so the internal VLAN for the - * port is going to change to the bridge internal VLAN. - * Let's remove untagged VLAN (vid=0) from port and - * re-add once internal VLAN has changed. - */ - - err = rocker_port_vlan_del(rocker_port, untagged_vid, 0); - if (err) - return err; - - rocker_port_internal_vlan_id_put(rocker_port, - rocker_port->dev->ifindex); - rocker_port->internal_vlan_id = - rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex); - - rocker_port->bridge_dev = bridge; - switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true); - - return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0); -} - -static int rocker_port_bridge_leave(struct rocker_port *rocker_port) -{ - u16 untagged_vid = 0; - int err; - - err = rocker_port_vlan_del(rocker_port, untagged_vid, 0); - if (err) - return err; - - rocker_port_internal_vlan_id_put(rocker_port, - rocker_port->bridge_dev->ifindex); - rocker_port->internal_vlan_id = - rocker_port_internal_vlan_id_get(rocker_port, - rocker_port->dev->ifindex); - - switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev, - false); - rocker_port->bridge_dev = NULL; - - err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0); - if (err) - return err; - - if (rocker_port->dev->flags & IFF_UP) - err = rocker_port_fwd_enable(rocker_port, NULL, 0); - - return err; -} - - -static int rocker_port_ovs_changed(struct rocker_port *rocker_port, - struct net_device *master) -{ - int err; - - rocker_port->bridge_dev = master; - - err = rocker_port_fwd_disable(rocker_port, NULL, 0); - if (err) - return err; - err = rocker_port_fwd_enable(rocker_port, NULL, 0); - - return err; -} - -static int rocker_port_master_linked(struct rocker_port *rocker_port, - struct net_device *master) -{ - int err = 0; - - if (netif_is_bridge_master(master)) - err = rocker_port_bridge_join(rocker_port, master); - else if (netif_is_ovs_master(master)) - err = rocker_port_ovs_changed(rocker_port, master); - return err; -} - -static int rocker_port_master_unlinked(struct rocker_port *rocker_port) -{ - int err = 0; - - if (rocker_port_is_bridged(rocker_port)) - err = rocker_port_bridge_leave(rocker_port); - else if (rocker_port_is_ovsed(rocker_port)) - err = rocker_port_ovs_changed(rocker_port, NULL); - return err; -} - -static int rocker_netdevice_event(struct notifier_block *unused, - unsigned long event, void *ptr) -{ - struct net_device *dev = netdev_notifier_info_to_dev(ptr); - struct netdev_notifier_changeupper_info *info; - struct rocker_port *rocker_port; - int err; - - if (!rocker_port_dev_check(dev)) - return NOTIFY_DONE; - - switch (event) { - case NETDEV_CHANGEUPPER: - info = ptr; - if (!info->master) - goto out; - rocker_port = netdev_priv(dev); - if (info->linking) { - err = rocker_port_master_linked(rocker_port, - info->upper_dev); - if (err) - netdev_warn(dev, "failed to reflect master linked (err %d)\n", - err); - } else { - err = rocker_port_master_unlinked(rocker_port); - if (err) - netdev_warn(dev, "failed to reflect master unlinked (err %d)\n", - err); - } - break; - } -out: - return NOTIFY_DONE; -} - -static struct notifier_block rocker_netdevice_nb __read_mostly = { - .notifier_call = rocker_netdevice_event, -}; - -/************************************ - * Net event notifier event handler - ************************************/ - -static int rocker_neigh_update(struct net_device *dev, struct neighbour *n) -{ - struct rocker_port *rocker_port = netdev_priv(dev); - int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) | - ROCKER_OP_FLAG_NOWAIT; - __be32 ip_addr = *(__be32 *)n->primary_key; - - return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha); -} - -static int rocker_netevent_event(struct notifier_block *unused, - unsigned long event, void *ptr) -{ - struct net_device *dev; - struct neighbour *n = ptr; - int err; - - switch (event) { - case NETEVENT_NEIGH_UPDATE: - if (n->tbl != &arp_tbl) - return NOTIFY_DONE; - dev = n->dev; - if (!rocker_port_dev_check(dev)) - return NOTIFY_DONE; - err = rocker_neigh_update(dev, n); - if (err) - netdev_warn(dev, - "failed to handle neigh update (err %d)\n", - err); - break; - } - - return NOTIFY_DONE; -} - -static struct notifier_block rocker_netevent_nb __read_mostly = { - .notifier_call = rocker_netevent_event, -}; - -/*********************** - * Module init and exit - ***********************/ - -static int __init rocker_module_init(void) -{ - int err; - - register_netdevice_notifier(&rocker_netdevice_nb); - register_netevent_notifier(&rocker_netevent_nb); - err = pci_register_driver(&rocker_pci_driver); - if (err) - goto err_pci_register_driver; - return 0; - -err_pci_register_driver: - unregister_netevent_notifier(&rocker_netevent_nb); - unregister_netdevice_notifier(&rocker_netdevice_nb); - return err; -} - -static void __exit rocker_module_exit(void) -{ - unregister_netevent_notifier(&rocker_netevent_nb); - unregister_netdevice_notifier(&rocker_netdevice_nb); - pci_unregister_driver(&rocker_pci_driver); -} - -module_init(rocker_module_init); -module_exit(rocker_module_exit); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); -MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>"); -MODULE_DESCRIPTION("Rocker switch device driver"); -MODULE_DEVICE_TABLE(pci, rocker_pci_id_table); diff --git a/drivers/net/ethernet/rocker/rocker.h b/drivers/net/ethernet/rocker/rocker.h index 12490b2f6..1ab995f71 100644 --- a/drivers/net/ethernet/rocker/rocker.h +++ b/drivers/net/ethernet/rocker/rocker.h @@ -1,6 +1,6 @@ /* * drivers/net/ethernet/rocker/rocker.h - Rocker switch device driver - * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us> + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> * * This program is free software; you can redistribute it and/or modify @@ -12,456 +12,137 @@ #ifndef _ROCKER_H #define _ROCKER_H +#include <linux/kernel.h> #include <linux/types.h> - -/* Return codes */ -enum { - ROCKER_OK = 0, - ROCKER_ENOENT = 2, - ROCKER_ENXIO = 6, - ROCKER_ENOMEM = 12, - ROCKER_EEXIST = 17, - ROCKER_EINVAL = 22, - ROCKER_EMSGSIZE = 90, - ROCKER_ENOTSUP = 95, - ROCKER_ENOBUFS = 105, -}; - -#define ROCKER_FP_PORTS_MAX 62 - -#define PCI_VENDOR_ID_REDHAT 0x1b36 -#define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 - -#define ROCKER_PCI_BAR0_SIZE 0x2000 - -/* MSI-X vectors */ -enum { - ROCKER_MSIX_VEC_CMD, - ROCKER_MSIX_VEC_EVENT, - ROCKER_MSIX_VEC_TEST, - ROCKER_MSIX_VEC_RESERVED0, - __ROCKER_MSIX_VEC_TX, - __ROCKER_MSIX_VEC_RX, -#define ROCKER_MSIX_VEC_TX(port) \ - (__ROCKER_MSIX_VEC_TX + ((port) * 2)) -#define ROCKER_MSIX_VEC_RX(port) \ - (__ROCKER_MSIX_VEC_RX + ((port) * 2)) -#define ROCKER_MSIX_VEC_COUNT(portcnt) \ - (ROCKER_MSIX_VEC_RX((portcnt - 1)) + 1) -}; - -/* Rocker bogus registers */ -#define ROCKER_BOGUS_REG0 0x0000 -#define ROCKER_BOGUS_REG1 0x0004 -#define ROCKER_BOGUS_REG2 0x0008 -#define ROCKER_BOGUS_REG3 0x000c - -/* Rocker test registers */ -#define ROCKER_TEST_REG 0x0010 -#define ROCKER_TEST_REG64 0x0018 /* 8-byte */ -#define ROCKER_TEST_IRQ 0x0020 -#define ROCKER_TEST_DMA_ADDR 0x0028 /* 8-byte */ -#define ROCKER_TEST_DMA_SIZE 0x0030 -#define ROCKER_TEST_DMA_CTRL 0x0034 - -/* Rocker test register ctrl */ -#define ROCKER_TEST_DMA_CTRL_CLEAR BIT(0) -#define ROCKER_TEST_DMA_CTRL_FILL BIT(1) -#define ROCKER_TEST_DMA_CTRL_INVERT BIT(2) - -/* Rocker DMA ring register offsets */ -#define ROCKER_DMA_DESC_ADDR(x) (0x1000 + (x) * 32) /* 8-byte */ -#define ROCKER_DMA_DESC_SIZE(x) (0x1008 + (x) * 32) -#define ROCKER_DMA_DESC_HEAD(x) (0x100c + (x) * 32) -#define ROCKER_DMA_DESC_TAIL(x) (0x1010 + (x) * 32) -#define ROCKER_DMA_DESC_CTRL(x) (0x1014 + (x) * 32) -#define ROCKER_DMA_DESC_CREDITS(x) (0x1018 + (x) * 32) -#define ROCKER_DMA_DESC_RES1(x) (0x101c + (x) * 32) - -/* Rocker dma ctrl register bits */ -#define ROCKER_DMA_DESC_CTRL_RESET BIT(0) - -/* Rocker DMA ring types */ -enum rocker_dma_type { - ROCKER_DMA_CMD, - ROCKER_DMA_EVENT, - __ROCKER_DMA_TX, - __ROCKER_DMA_RX, -#define ROCKER_DMA_TX(port) (__ROCKER_DMA_TX + (port) * 2) -#define ROCKER_DMA_RX(port) (__ROCKER_DMA_RX + (port) * 2) -}; - -/* Rocker DMA ring size limits and default sizes */ -#define ROCKER_DMA_SIZE_MIN 2ul -#define ROCKER_DMA_SIZE_MAX 65536ul -#define ROCKER_DMA_CMD_DEFAULT_SIZE 32ul -#define ROCKER_DMA_EVENT_DEFAULT_SIZE 32ul -#define ROCKER_DMA_TX_DEFAULT_SIZE 64ul -#define ROCKER_DMA_TX_DESC_SIZE 256 -#define ROCKER_DMA_RX_DEFAULT_SIZE 64ul -#define ROCKER_DMA_RX_DESC_SIZE 256 - -/* Rocker DMA descriptor struct */ -struct rocker_desc { - u64 buf_addr; - u64 cookie; - u16 buf_size; - u16 tlv_size; - u16 resv[5]; - u16 comp_err; -}; - -#define ROCKER_DMA_DESC_COMP_ERR_GEN BIT(15) - -/* Rocker DMA TLV struct */ -struct rocker_tlv { - u32 type; - u16 len; -}; - -/* TLVs */ -enum { - ROCKER_TLV_CMD_UNSPEC, - ROCKER_TLV_CMD_TYPE, /* u16 */ - ROCKER_TLV_CMD_INFO, /* nest */ - - __ROCKER_TLV_CMD_MAX, - ROCKER_TLV_CMD_MAX = __ROCKER_TLV_CMD_MAX - 1, -}; - -enum { - ROCKER_TLV_CMD_TYPE_UNSPEC, - ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS, - ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS, - ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD, - ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD, - ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL, - ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_GET_STATS, - ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD, - ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD, - ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL, - ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS, - - ROCKER_TLV_CMD_TYPE_CLEAR_PORT_STATS, - ROCKER_TLV_CMD_TYPE_GET_PORT_STATS, - - __ROCKER_TLV_CMD_TYPE_MAX, - ROCKER_TLV_CMD_TYPE_MAX = __ROCKER_TLV_CMD_TYPE_MAX - 1, -}; - -enum { - ROCKER_TLV_CMD_PORT_SETTINGS_UNSPEC, - ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, /* u32 */ - ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, /* u32 */ - ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, /* u8 */ - ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, /* u8 */ - ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, /* binary */ - ROCKER_TLV_CMD_PORT_SETTINGS_MODE, /* u8 */ - ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, /* u8 */ - ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME, /* binary */ - ROCKER_TLV_CMD_PORT_SETTINGS_MTU, /* u16 */ - - __ROCKER_TLV_CMD_PORT_SETTINGS_MAX, - ROCKER_TLV_CMD_PORT_SETTINGS_MAX = - __ROCKER_TLV_CMD_PORT_SETTINGS_MAX - 1, -}; - -enum { - ROCKER_TLV_CMD_PORT_STATS_UNSPEC, - ROCKER_TLV_CMD_PORT_STATS_PPORT, /* u32 */ - - ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, /* u64 */ - - ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, /* u64 */ - ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, /* u64 */ - - __ROCKER_TLV_CMD_PORT_STATS_MAX, - ROCKER_TLV_CMD_PORT_STATS_MAX = __ROCKER_TLV_CMD_PORT_STATS_MAX - 1, -}; - -enum rocker_port_mode { - ROCKER_PORT_MODE_OF_DPA, -}; - -enum { - ROCKER_TLV_EVENT_UNSPEC, - ROCKER_TLV_EVENT_TYPE, /* u16 */ - ROCKER_TLV_EVENT_INFO, /* nest */ - - __ROCKER_TLV_EVENT_MAX, - ROCKER_TLV_EVENT_MAX = __ROCKER_TLV_EVENT_MAX - 1, -}; - -enum { - ROCKER_TLV_EVENT_TYPE_UNSPEC, - ROCKER_TLV_EVENT_TYPE_LINK_CHANGED, - ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN, - - __ROCKER_TLV_EVENT_TYPE_MAX, - ROCKER_TLV_EVENT_TYPE_MAX = __ROCKER_TLV_EVENT_TYPE_MAX - 1, -}; - -enum { - ROCKER_TLV_EVENT_LINK_CHANGED_UNSPEC, - ROCKER_TLV_EVENT_LINK_CHANGED_PPORT, /* u32 */ - ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP, /* u8 */ - - __ROCKER_TLV_EVENT_LINK_CHANGED_MAX, - ROCKER_TLV_EVENT_LINK_CHANGED_MAX = - __ROCKER_TLV_EVENT_LINK_CHANGED_MAX - 1, -}; - -enum { - ROCKER_TLV_EVENT_MAC_VLAN_UNSPEC, - ROCKER_TLV_EVENT_MAC_VLAN_PPORT, /* u32 */ - ROCKER_TLV_EVENT_MAC_VLAN_MAC, /* binary */ - ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID, /* __be16 */ - - __ROCKER_TLV_EVENT_MAC_VLAN_MAX, - ROCKER_TLV_EVENT_MAC_VLAN_MAX = __ROCKER_TLV_EVENT_MAC_VLAN_MAX - 1, -}; - -enum { - ROCKER_TLV_RX_UNSPEC, - ROCKER_TLV_RX_FLAGS, /* u16, see ROCKER_RX_FLAGS_ */ - ROCKER_TLV_RX_CSUM, /* u16 */ - ROCKER_TLV_RX_FRAG_ADDR, /* u64 */ - ROCKER_TLV_RX_FRAG_MAX_LEN, /* u16 */ - ROCKER_TLV_RX_FRAG_LEN, /* u16 */ - - __ROCKER_TLV_RX_MAX, - ROCKER_TLV_RX_MAX = __ROCKER_TLV_RX_MAX - 1, -}; - -#define ROCKER_RX_FLAGS_IPV4 BIT(0) -#define ROCKER_RX_FLAGS_IPV6 BIT(1) -#define ROCKER_RX_FLAGS_CSUM_CALC BIT(2) -#define ROCKER_RX_FLAGS_IPV4_CSUM_GOOD BIT(3) -#define ROCKER_RX_FLAGS_IP_FRAG BIT(4) -#define ROCKER_RX_FLAGS_TCP BIT(5) -#define ROCKER_RX_FLAGS_UDP BIT(6) -#define ROCKER_RX_FLAGS_TCP_UDP_CSUM_GOOD BIT(7) -#define ROCKER_RX_FLAGS_FWD_OFFLOAD BIT(8) - -enum { - ROCKER_TLV_TX_UNSPEC, - ROCKER_TLV_TX_OFFLOAD, /* u8, see ROCKER_TX_OFFLOAD_ */ - ROCKER_TLV_TX_L3_CSUM_OFF, /* u16 */ - ROCKER_TLV_TX_TSO_MSS, /* u16 */ - ROCKER_TLV_TX_TSO_HDR_LEN, /* u16 */ - ROCKER_TLV_TX_FRAGS, /* array */ - - __ROCKER_TLV_TX_MAX, - ROCKER_TLV_TX_MAX = __ROCKER_TLV_TX_MAX - 1, -}; - -#define ROCKER_TX_OFFLOAD_NONE 0 -#define ROCKER_TX_OFFLOAD_IP_CSUM 1 -#define ROCKER_TX_OFFLOAD_TCP_UDP_CSUM 2 -#define ROCKER_TX_OFFLOAD_L3_CSUM 3 -#define ROCKER_TX_OFFLOAD_TSO 4 - -#define ROCKER_TX_FRAGS_MAX 16 - -enum { - ROCKER_TLV_TX_FRAG_UNSPEC, - ROCKER_TLV_TX_FRAG, /* nest */ - - __ROCKER_TLV_TX_FRAG_MAX, - ROCKER_TLV_TX_FRAG_MAX = __ROCKER_TLV_TX_FRAG_MAX - 1, -}; - -enum { - ROCKER_TLV_TX_FRAG_ATTR_UNSPEC, - ROCKER_TLV_TX_FRAG_ATTR_ADDR, /* u64 */ - ROCKER_TLV_TX_FRAG_ATTR_LEN, /* u16 */ - - __ROCKER_TLV_TX_FRAG_ATTR_MAX, - ROCKER_TLV_TX_FRAG_ATTR_MAX = __ROCKER_TLV_TX_FRAG_ATTR_MAX - 1, -}; - -/* cmd info nested for OF-DPA msgs */ -enum { - ROCKER_TLV_OF_DPA_UNSPEC, - ROCKER_TLV_OF_DPA_TABLE_ID, /* u16 */ - ROCKER_TLV_OF_DPA_PRIORITY, /* u32 */ - ROCKER_TLV_OF_DPA_HARDTIME, /* u32 */ - ROCKER_TLV_OF_DPA_IDLETIME, /* u32 */ - ROCKER_TLV_OF_DPA_COOKIE, /* u64 */ - ROCKER_TLV_OF_DPA_IN_PPORT, /* u32 */ - ROCKER_TLV_OF_DPA_IN_PPORT_MASK, /* u32 */ - ROCKER_TLV_OF_DPA_OUT_PPORT, /* u32 */ - ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, /* u16 */ - ROCKER_TLV_OF_DPA_GROUP_ID, /* u32 */ - ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, /* u32 */ - ROCKER_TLV_OF_DPA_GROUP_COUNT, /* u16 */ - ROCKER_TLV_OF_DPA_GROUP_IDS, /* u32 array */ - ROCKER_TLV_OF_DPA_VLAN_ID, /* __be16 */ - ROCKER_TLV_OF_DPA_VLAN_ID_MASK, /* __be16 */ - ROCKER_TLV_OF_DPA_VLAN_PCP, /* __be16 */ - ROCKER_TLV_OF_DPA_VLAN_PCP_MASK, /* __be16 */ - ROCKER_TLV_OF_DPA_VLAN_PCP_ACTION, /* u8 */ - ROCKER_TLV_OF_DPA_NEW_VLAN_ID, /* __be16 */ - ROCKER_TLV_OF_DPA_NEW_VLAN_PCP, /* u8 */ - ROCKER_TLV_OF_DPA_TUNNEL_ID, /* u32 */ - ROCKER_TLV_OF_DPA_TUNNEL_LPORT, /* u32 */ - ROCKER_TLV_OF_DPA_ETHERTYPE, /* __be16 */ - ROCKER_TLV_OF_DPA_DST_MAC, /* binary */ - ROCKER_TLV_OF_DPA_DST_MAC_MASK, /* binary */ - ROCKER_TLV_OF_DPA_SRC_MAC, /* binary */ - ROCKER_TLV_OF_DPA_SRC_MAC_MASK, /* binary */ - ROCKER_TLV_OF_DPA_IP_PROTO, /* u8 */ - ROCKER_TLV_OF_DPA_IP_PROTO_MASK, /* u8 */ - ROCKER_TLV_OF_DPA_IP_DSCP, /* u8 */ - ROCKER_TLV_OF_DPA_IP_DSCP_MASK, /* u8 */ - ROCKER_TLV_OF_DPA_IP_DSCP_ACTION, /* u8 */ - ROCKER_TLV_OF_DPA_NEW_IP_DSCP, /* u8 */ - ROCKER_TLV_OF_DPA_IP_ECN, /* u8 */ - ROCKER_TLV_OF_DPA_IP_ECN_MASK, /* u8 */ - ROCKER_TLV_OF_DPA_DST_IP, /* __be32 */ - ROCKER_TLV_OF_DPA_DST_IP_MASK, /* __be32 */ - ROCKER_TLV_OF_DPA_SRC_IP, /* __be32 */ - ROCKER_TLV_OF_DPA_SRC_IP_MASK, /* __be32 */ - ROCKER_TLV_OF_DPA_DST_IPV6, /* binary */ - ROCKER_TLV_OF_DPA_DST_IPV6_MASK, /* binary */ - ROCKER_TLV_OF_DPA_SRC_IPV6, /* binary */ - ROCKER_TLV_OF_DPA_SRC_IPV6_MASK, /* binary */ - ROCKER_TLV_OF_DPA_SRC_ARP_IP, /* __be32 */ - ROCKER_TLV_OF_DPA_SRC_ARP_IP_MASK, /* __be32 */ - ROCKER_TLV_OF_DPA_L4_DST_PORT, /* __be16 */ - ROCKER_TLV_OF_DPA_L4_DST_PORT_MASK, /* __be16 */ - ROCKER_TLV_OF_DPA_L4_SRC_PORT, /* __be16 */ - ROCKER_TLV_OF_DPA_L4_SRC_PORT_MASK, /* __be16 */ - ROCKER_TLV_OF_DPA_ICMP_TYPE, /* u8 */ - ROCKER_TLV_OF_DPA_ICMP_TYPE_MASK, /* u8 */ - ROCKER_TLV_OF_DPA_ICMP_CODE, /* u8 */ - ROCKER_TLV_OF_DPA_ICMP_CODE_MASK, /* u8 */ - ROCKER_TLV_OF_DPA_IPV6_LABEL, /* __be32 */ - ROCKER_TLV_OF_DPA_IPV6_LABEL_MASK, /* __be32 */ - ROCKER_TLV_OF_DPA_QUEUE_ID_ACTION, /* u8 */ - ROCKER_TLV_OF_DPA_NEW_QUEUE_ID, /* u8 */ - ROCKER_TLV_OF_DPA_CLEAR_ACTIONS, /* u32 */ - ROCKER_TLV_OF_DPA_POP_VLAN, /* u8 */ - ROCKER_TLV_OF_DPA_TTL_CHECK, /* u8 */ - ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, /* u8 */ - - __ROCKER_TLV_OF_DPA_MAX, - ROCKER_TLV_OF_DPA_MAX = __ROCKER_TLV_OF_DPA_MAX - 1, -}; - -/* OF-DPA table IDs */ - -enum rocker_of_dpa_table_id { - ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT = 0, - ROCKER_OF_DPA_TABLE_ID_VLAN = 10, - ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC = 20, - ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING = 30, - ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING = 40, - ROCKER_OF_DPA_TABLE_ID_BRIDGING = 50, - ROCKER_OF_DPA_TABLE_ID_ACL_POLICY = 60, -}; - -/* OF-DPA flow stats */ -enum { - ROCKER_TLV_OF_DPA_FLOW_STAT_UNSPEC, - ROCKER_TLV_OF_DPA_FLOW_STAT_DURATION, /* u32 */ - ROCKER_TLV_OF_DPA_FLOW_STAT_RX_PKTS, /* u64 */ - ROCKER_TLV_OF_DPA_FLOW_STAT_TX_PKTS, /* u64 */ - - __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX, - ROCKER_TLV_OF_DPA_FLOW_STAT_MAX = __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX - 1, -}; - -/* OF-DPA group types */ -enum rocker_of_dpa_group_type { - ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE = 0, - ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE, - ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST, - ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST, - ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD, - ROCKER_OF_DPA_GROUP_TYPE_L3_INTERFACE, - ROCKER_OF_DPA_GROUP_TYPE_L3_MCAST, - ROCKER_OF_DPA_GROUP_TYPE_L3_ECMP, - ROCKER_OF_DPA_GROUP_TYPE_L2_OVERLAY, -}; - -/* OF-DPA group L2 overlay types */ -enum rocker_of_dpa_overlay_type { - ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_UCAST = 0, - ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_MCAST, - ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_UCAST, - ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_MCAST, -}; - -/* OF-DPA group ID encoding */ -#define ROCKER_GROUP_TYPE_SHIFT 28 -#define ROCKER_GROUP_TYPE_MASK 0xf0000000 -#define ROCKER_GROUP_VLAN_SHIFT 16 -#define ROCKER_GROUP_VLAN_MASK 0x0fff0000 -#define ROCKER_GROUP_PORT_SHIFT 0 -#define ROCKER_GROUP_PORT_MASK 0x0000ffff -#define ROCKER_GROUP_TUNNEL_ID_SHIFT 12 -#define ROCKER_GROUP_TUNNEL_ID_MASK 0x0ffff000 -#define ROCKER_GROUP_SUBTYPE_SHIFT 10 -#define ROCKER_GROUP_SUBTYPE_MASK 0x00000c00 -#define ROCKER_GROUP_INDEX_SHIFT 0 -#define ROCKER_GROUP_INDEX_MASK 0x0000ffff -#define ROCKER_GROUP_INDEX_LONG_SHIFT 0 -#define ROCKER_GROUP_INDEX_LONG_MASK 0x0fffffff - -#define ROCKER_GROUP_TYPE_GET(group_id) \ - (((group_id) & ROCKER_GROUP_TYPE_MASK) >> ROCKER_GROUP_TYPE_SHIFT) -#define ROCKER_GROUP_TYPE_SET(type) \ - (((type) << ROCKER_GROUP_TYPE_SHIFT) & ROCKER_GROUP_TYPE_MASK) -#define ROCKER_GROUP_VLAN_GET(group_id) \ - (((group_id) & ROCKER_GROUP_VLAN_ID_MASK) >> ROCKER_GROUP_VLAN_ID_SHIFT) -#define ROCKER_GROUP_VLAN_SET(vlan_id) \ - (((vlan_id) << ROCKER_GROUP_VLAN_SHIFT) & ROCKER_GROUP_VLAN_MASK) -#define ROCKER_GROUP_PORT_GET(group_id) \ - (((group_id) & ROCKER_GROUP_PORT_MASK) >> ROCKER_GROUP_PORT_SHIFT) -#define ROCKER_GROUP_PORT_SET(port) \ - (((port) << ROCKER_GROUP_PORT_SHIFT) & ROCKER_GROUP_PORT_MASK) -#define ROCKER_GROUP_INDEX_GET(group_id) \ - (((group_id) & ROCKER_GROUP_INDEX_MASK) >> ROCKER_GROUP_INDEX_SHIFT) -#define ROCKER_GROUP_INDEX_SET(index) \ - (((index) << ROCKER_GROUP_INDEX_SHIFT) & ROCKER_GROUP_INDEX_MASK) -#define ROCKER_GROUP_INDEX_LONG_GET(group_id) \ - (((group_id) & ROCKER_GROUP_INDEX_LONG_MASK) >> \ - ROCKER_GROUP_INDEX_LONG_SHIFT) -#define ROCKER_GROUP_INDEX_LONG_SET(index) \ - (((index) << ROCKER_GROUP_INDEX_LONG_SHIFT) & \ - ROCKER_GROUP_INDEX_LONG_MASK) - -#define ROCKER_GROUP_NONE 0 -#define ROCKER_GROUP_L2_INTERFACE(vlan_id, port) \ - (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE) |\ - ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_PORT_SET(port)) -#define ROCKER_GROUP_L2_REWRITE(index) \ - (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE) |\ - ROCKER_GROUP_INDEX_LONG_SET(index)) -#define ROCKER_GROUP_L2_MCAST(vlan_id, index) \ - (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST) |\ - ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_INDEX_SET(index)) -#define ROCKER_GROUP_L2_FLOOD(vlan_id, index) \ - (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD) |\ - ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_INDEX_SET(index)) -#define ROCKER_GROUP_L3_UNICAST(index) \ - (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST) |\ - ROCKER_GROUP_INDEX_LONG_SET(index)) - -/* Rocker general purpose registers */ -#define ROCKER_CONTROL 0x0300 -#define ROCKER_PORT_PHYS_COUNT 0x0304 -#define ROCKER_PORT_PHYS_LINK_STATUS 0x0310 /* 8-byte */ -#define ROCKER_PORT_PHYS_ENABLE 0x0318 /* 8-byte */ -#define ROCKER_SWITCH_ID 0x0320 /* 8-byte */ - -/* Rocker control bits */ -#define ROCKER_CONTROL_RESET BIT(0) +#include <linux/netdevice.h> +#include <net/neighbour.h> +#include <net/switchdev.h> + +#include "rocker_hw.h" + +struct rocker_desc_info { + char *data; /* mapped */ + size_t data_size; + size_t tlv_size; + struct rocker_desc *desc; + dma_addr_t mapaddr; +}; + +struct rocker_dma_ring_info { + size_t size; + u32 head; + u32 tail; + struct rocker_desc *desc; /* mapped */ + dma_addr_t mapaddr; + struct rocker_desc_info *desc_info; + unsigned int type; +}; + +struct rocker; + +struct rocker_port { + struct net_device *dev; + struct rocker *rocker; + void *wpriv; + unsigned int port_number; + u32 pport; + struct napi_struct napi_tx; + struct napi_struct napi_rx; + struct rocker_dma_ring_info tx_ring; + struct rocker_dma_ring_info rx_ring; +}; + +struct rocker_world_ops; + +struct rocker { + struct pci_dev *pdev; + u8 __iomem *hw_addr; + struct msix_entry *msix_entries; + unsigned int port_count; + struct rocker_port **ports; + struct { + u64 id; + } hw; + spinlock_t cmd_ring_lock; /* for cmd ring accesses */ + struct rocker_dma_ring_info cmd_ring; + struct rocker_dma_ring_info event_ring; + struct rocker_world_ops *wops; + void *wpriv; +}; + +typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv); + +typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv); + +int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait, + rocker_cmd_prep_cb_t prepare, void *prepare_priv, + rocker_cmd_proc_cb_t process, void *process_priv); + +int rocker_port_set_learning(struct rocker_port *rocker_port, + bool learning); + +struct rocker_world_ops { + const char *kind; + size_t priv_size; + size_t port_priv_size; + u8 mode; + int (*init)(struct rocker *rocker); + void (*fini)(struct rocker *rocker); + int (*port_pre_init)(struct rocker_port *rocker_port); + int (*port_init)(struct rocker_port *rocker_port); + void (*port_fini)(struct rocker_port *rocker_port); + void (*port_post_fini)(struct rocker_port *rocker_port); + int (*port_open)(struct rocker_port *rocker_port); + void (*port_stop)(struct rocker_port *rocker_port); + int (*port_attr_stp_state_set)(struct rocker_port *rocker_port, + u8 state, + struct switchdev_trans *trans); + int (*port_attr_bridge_flags_set)(struct rocker_port *rocker_port, + unsigned long brport_flags, + struct switchdev_trans *trans); + int (*port_attr_bridge_flags_get)(const struct rocker_port *rocker_port, + unsigned long *p_brport_flags); + int (*port_attr_bridge_ageing_time_set)(struct rocker_port *rocker_port, + u32 ageing_time, + struct switchdev_trans *trans); + int (*port_obj_vlan_add)(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans); + int (*port_obj_vlan_del)(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan); + int (*port_obj_vlan_dump)(const struct rocker_port *rocker_port, + struct switchdev_obj_port_vlan *vlan, + switchdev_obj_dump_cb_t *cb); + int (*port_obj_fib4_add)(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4, + struct switchdev_trans *trans); + int (*port_obj_fib4_del)(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4); + int (*port_obj_fdb_add)(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb, + struct switchdev_trans *trans); + int (*port_obj_fdb_del)(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb); + int (*port_obj_fdb_dump)(const struct rocker_port *rocker_port, + struct switchdev_obj_port_fdb *fdb, + switchdev_obj_dump_cb_t *cb); + int (*port_master_linked)(struct rocker_port *rocker_port, + struct net_device *master); + int (*port_master_unlinked)(struct rocker_port *rocker_port, + struct net_device *master); + int (*port_neigh_update)(struct rocker_port *rocker_port, + struct neighbour *n); + int (*port_neigh_destroy)(struct rocker_port *rocker_port, + struct neighbour *n); + int (*port_ev_mac_vlan_seen)(struct rocker_port *rocker_port, + const unsigned char *addr, + __be16 vlan_id); +}; + +extern struct rocker_world_ops rocker_ofdpa_ops; #endif diff --git a/drivers/net/ethernet/rocker/rocker_hw.h b/drivers/net/ethernet/rocker/rocker_hw.h new file mode 100644 index 000000000..2adfe8885 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_hw.h @@ -0,0 +1,467 @@ +/* + * drivers/net/ethernet/rocker/rocker_hw.h - Rocker switch device driver + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _ROCKER_HW_H +#define _ROCKER_HW_H + +#include <linux/types.h> + +/* Return codes */ +enum { + ROCKER_OK = 0, + ROCKER_ENOENT = 2, + ROCKER_ENXIO = 6, + ROCKER_ENOMEM = 12, + ROCKER_EEXIST = 17, + ROCKER_EINVAL = 22, + ROCKER_EMSGSIZE = 90, + ROCKER_ENOTSUP = 95, + ROCKER_ENOBUFS = 105, +}; + +#define ROCKER_FP_PORTS_MAX 62 + +#define PCI_VENDOR_ID_REDHAT 0x1b36 +#define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 + +#define ROCKER_PCI_BAR0_SIZE 0x2000 + +/* MSI-X vectors */ +enum { + ROCKER_MSIX_VEC_CMD, + ROCKER_MSIX_VEC_EVENT, + ROCKER_MSIX_VEC_TEST, + ROCKER_MSIX_VEC_RESERVED0, + __ROCKER_MSIX_VEC_TX, + __ROCKER_MSIX_VEC_RX, +#define ROCKER_MSIX_VEC_TX(port) \ + (__ROCKER_MSIX_VEC_TX + ((port) * 2)) +#define ROCKER_MSIX_VEC_RX(port) \ + (__ROCKER_MSIX_VEC_RX + ((port) * 2)) +#define ROCKER_MSIX_VEC_COUNT(portcnt) \ + (ROCKER_MSIX_VEC_RX((portcnt - 1)) + 1) +}; + +/* Rocker bogus registers */ +#define ROCKER_BOGUS_REG0 0x0000 +#define ROCKER_BOGUS_REG1 0x0004 +#define ROCKER_BOGUS_REG2 0x0008 +#define ROCKER_BOGUS_REG3 0x000c + +/* Rocker test registers */ +#define ROCKER_TEST_REG 0x0010 +#define ROCKER_TEST_REG64 0x0018 /* 8-byte */ +#define ROCKER_TEST_IRQ 0x0020 +#define ROCKER_TEST_DMA_ADDR 0x0028 /* 8-byte */ +#define ROCKER_TEST_DMA_SIZE 0x0030 +#define ROCKER_TEST_DMA_CTRL 0x0034 + +/* Rocker test register ctrl */ +#define ROCKER_TEST_DMA_CTRL_CLEAR BIT(0) +#define ROCKER_TEST_DMA_CTRL_FILL BIT(1) +#define ROCKER_TEST_DMA_CTRL_INVERT BIT(2) + +/* Rocker DMA ring register offsets */ +#define ROCKER_DMA_DESC_ADDR(x) (0x1000 + (x) * 32) /* 8-byte */ +#define ROCKER_DMA_DESC_SIZE(x) (0x1008 + (x) * 32) +#define ROCKER_DMA_DESC_HEAD(x) (0x100c + (x) * 32) +#define ROCKER_DMA_DESC_TAIL(x) (0x1010 + (x) * 32) +#define ROCKER_DMA_DESC_CTRL(x) (0x1014 + (x) * 32) +#define ROCKER_DMA_DESC_CREDITS(x) (0x1018 + (x) * 32) +#define ROCKER_DMA_DESC_RES1(x) (0x101c + (x) * 32) + +/* Rocker dma ctrl register bits */ +#define ROCKER_DMA_DESC_CTRL_RESET BIT(0) + +/* Rocker DMA ring types */ +enum rocker_dma_type { + ROCKER_DMA_CMD, + ROCKER_DMA_EVENT, + __ROCKER_DMA_TX, + __ROCKER_DMA_RX, +#define ROCKER_DMA_TX(port) (__ROCKER_DMA_TX + (port) * 2) +#define ROCKER_DMA_RX(port) (__ROCKER_DMA_RX + (port) * 2) +}; + +/* Rocker DMA ring size limits and default sizes */ +#define ROCKER_DMA_SIZE_MIN 2ul +#define ROCKER_DMA_SIZE_MAX 65536ul +#define ROCKER_DMA_CMD_DEFAULT_SIZE 32ul +#define ROCKER_DMA_EVENT_DEFAULT_SIZE 32ul +#define ROCKER_DMA_TX_DEFAULT_SIZE 64ul +#define ROCKER_DMA_TX_DESC_SIZE 256 +#define ROCKER_DMA_RX_DEFAULT_SIZE 64ul +#define ROCKER_DMA_RX_DESC_SIZE 256 + +/* Rocker DMA descriptor struct */ +struct rocker_desc { + u64 buf_addr; + u64 cookie; + u16 buf_size; + u16 tlv_size; + u16 resv[5]; + u16 comp_err; +}; + +#define ROCKER_DMA_DESC_COMP_ERR_GEN BIT(15) + +/* Rocker DMA TLV struct */ +struct rocker_tlv { + u32 type; + u16 len; +}; + +/* TLVs */ +enum { + ROCKER_TLV_CMD_UNSPEC, + ROCKER_TLV_CMD_TYPE, /* u16 */ + ROCKER_TLV_CMD_INFO, /* nest */ + + __ROCKER_TLV_CMD_MAX, + ROCKER_TLV_CMD_MAX = __ROCKER_TLV_CMD_MAX - 1, +}; + +enum { + ROCKER_TLV_CMD_TYPE_UNSPEC, + ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL, + ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_GET_STATS, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL, + ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS, + + ROCKER_TLV_CMD_TYPE_CLEAR_PORT_STATS, + ROCKER_TLV_CMD_TYPE_GET_PORT_STATS, + + __ROCKER_TLV_CMD_TYPE_MAX, + ROCKER_TLV_CMD_TYPE_MAX = __ROCKER_TLV_CMD_TYPE_MAX - 1, +}; + +enum { + ROCKER_TLV_CMD_PORT_SETTINGS_UNSPEC, + ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, /* u32 */ + ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, /* u32 */ + ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, /* binary */ + ROCKER_TLV_CMD_PORT_SETTINGS_MODE, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, /* u8 */ + ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME, /* binary */ + ROCKER_TLV_CMD_PORT_SETTINGS_MTU, /* u16 */ + + __ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + ROCKER_TLV_CMD_PORT_SETTINGS_MAX = + __ROCKER_TLV_CMD_PORT_SETTINGS_MAX - 1, +}; + +enum { + ROCKER_TLV_CMD_PORT_STATS_UNSPEC, + ROCKER_TLV_CMD_PORT_STATS_PPORT, /* u32 */ + + ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, /* u64 */ + + ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, /* u64 */ + ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, /* u64 */ + + __ROCKER_TLV_CMD_PORT_STATS_MAX, + ROCKER_TLV_CMD_PORT_STATS_MAX = __ROCKER_TLV_CMD_PORT_STATS_MAX - 1, +}; + +enum rocker_port_mode { + ROCKER_PORT_MODE_OF_DPA, +}; + +enum { + ROCKER_TLV_EVENT_UNSPEC, + ROCKER_TLV_EVENT_TYPE, /* u16 */ + ROCKER_TLV_EVENT_INFO, /* nest */ + + __ROCKER_TLV_EVENT_MAX, + ROCKER_TLV_EVENT_MAX = __ROCKER_TLV_EVENT_MAX - 1, +}; + +enum { + ROCKER_TLV_EVENT_TYPE_UNSPEC, + ROCKER_TLV_EVENT_TYPE_LINK_CHANGED, + ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN, + + __ROCKER_TLV_EVENT_TYPE_MAX, + ROCKER_TLV_EVENT_TYPE_MAX = __ROCKER_TLV_EVENT_TYPE_MAX - 1, +}; + +enum { + ROCKER_TLV_EVENT_LINK_CHANGED_UNSPEC, + ROCKER_TLV_EVENT_LINK_CHANGED_PPORT, /* u32 */ + ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP, /* u8 */ + + __ROCKER_TLV_EVENT_LINK_CHANGED_MAX, + ROCKER_TLV_EVENT_LINK_CHANGED_MAX = + __ROCKER_TLV_EVENT_LINK_CHANGED_MAX - 1, +}; + +enum { + ROCKER_TLV_EVENT_MAC_VLAN_UNSPEC, + ROCKER_TLV_EVENT_MAC_VLAN_PPORT, /* u32 */ + ROCKER_TLV_EVENT_MAC_VLAN_MAC, /* binary */ + ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID, /* __be16 */ + + __ROCKER_TLV_EVENT_MAC_VLAN_MAX, + ROCKER_TLV_EVENT_MAC_VLAN_MAX = __ROCKER_TLV_EVENT_MAC_VLAN_MAX - 1, +}; + +enum { + ROCKER_TLV_RX_UNSPEC, + ROCKER_TLV_RX_FLAGS, /* u16, see ROCKER_RX_FLAGS_ */ + ROCKER_TLV_RX_CSUM, /* u16 */ + ROCKER_TLV_RX_FRAG_ADDR, /* u64 */ + ROCKER_TLV_RX_FRAG_MAX_LEN, /* u16 */ + ROCKER_TLV_RX_FRAG_LEN, /* u16 */ + + __ROCKER_TLV_RX_MAX, + ROCKER_TLV_RX_MAX = __ROCKER_TLV_RX_MAX - 1, +}; + +#define ROCKER_RX_FLAGS_IPV4 BIT(0) +#define ROCKER_RX_FLAGS_IPV6 BIT(1) +#define ROCKER_RX_FLAGS_CSUM_CALC BIT(2) +#define ROCKER_RX_FLAGS_IPV4_CSUM_GOOD BIT(3) +#define ROCKER_RX_FLAGS_IP_FRAG BIT(4) +#define ROCKER_RX_FLAGS_TCP BIT(5) +#define ROCKER_RX_FLAGS_UDP BIT(6) +#define ROCKER_RX_FLAGS_TCP_UDP_CSUM_GOOD BIT(7) +#define ROCKER_RX_FLAGS_FWD_OFFLOAD BIT(8) + +enum { + ROCKER_TLV_TX_UNSPEC, + ROCKER_TLV_TX_OFFLOAD, /* u8, see ROCKER_TX_OFFLOAD_ */ + ROCKER_TLV_TX_L3_CSUM_OFF, /* u16 */ + ROCKER_TLV_TX_TSO_MSS, /* u16 */ + ROCKER_TLV_TX_TSO_HDR_LEN, /* u16 */ + ROCKER_TLV_TX_FRAGS, /* array */ + + __ROCKER_TLV_TX_MAX, + ROCKER_TLV_TX_MAX = __ROCKER_TLV_TX_MAX - 1, +}; + +#define ROCKER_TX_OFFLOAD_NONE 0 +#define ROCKER_TX_OFFLOAD_IP_CSUM 1 +#define ROCKER_TX_OFFLOAD_TCP_UDP_CSUM 2 +#define ROCKER_TX_OFFLOAD_L3_CSUM 3 +#define ROCKER_TX_OFFLOAD_TSO 4 + +#define ROCKER_TX_FRAGS_MAX 16 + +enum { + ROCKER_TLV_TX_FRAG_UNSPEC, + ROCKER_TLV_TX_FRAG, /* nest */ + + __ROCKER_TLV_TX_FRAG_MAX, + ROCKER_TLV_TX_FRAG_MAX = __ROCKER_TLV_TX_FRAG_MAX - 1, +}; + +enum { + ROCKER_TLV_TX_FRAG_ATTR_UNSPEC, + ROCKER_TLV_TX_FRAG_ATTR_ADDR, /* u64 */ + ROCKER_TLV_TX_FRAG_ATTR_LEN, /* u16 */ + + __ROCKER_TLV_TX_FRAG_ATTR_MAX, + ROCKER_TLV_TX_FRAG_ATTR_MAX = __ROCKER_TLV_TX_FRAG_ATTR_MAX - 1, +}; + +/* cmd info nested for OF-DPA msgs */ +enum { + ROCKER_TLV_OF_DPA_UNSPEC, + ROCKER_TLV_OF_DPA_TABLE_ID, /* u16 */ + ROCKER_TLV_OF_DPA_PRIORITY, /* u32 */ + ROCKER_TLV_OF_DPA_HARDTIME, /* u32 */ + ROCKER_TLV_OF_DPA_IDLETIME, /* u32 */ + ROCKER_TLV_OF_DPA_COOKIE, /* u64 */ + ROCKER_TLV_OF_DPA_IN_PPORT, /* u32 */ + ROCKER_TLV_OF_DPA_IN_PPORT_MASK, /* u32 */ + ROCKER_TLV_OF_DPA_OUT_PPORT, /* u32 */ + ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, /* u16 */ + ROCKER_TLV_OF_DPA_GROUP_ID, /* u32 */ + ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, /* u32 */ + ROCKER_TLV_OF_DPA_GROUP_COUNT, /* u16 */ + ROCKER_TLV_OF_DPA_GROUP_IDS, /* u32 array */ + ROCKER_TLV_OF_DPA_VLAN_ID, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_ID_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_VLAN_PCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_VLAN_ID, /* __be16 */ + ROCKER_TLV_OF_DPA_NEW_VLAN_PCP, /* u8 */ + ROCKER_TLV_OF_DPA_TUNNEL_ID, /* u32 */ + ROCKER_TLV_OF_DPA_TUNNEL_LPORT, /* u32 */ + ROCKER_TLV_OF_DPA_ETHERTYPE, /* __be16 */ + ROCKER_TLV_OF_DPA_DST_MAC, /* binary */ + ROCKER_TLV_OF_DPA_DST_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_MAC, /* binary */ + ROCKER_TLV_OF_DPA_SRC_MAC_MASK, /* binary */ + ROCKER_TLV_OF_DPA_IP_PROTO, /* u8 */ + ROCKER_TLV_OF_DPA_IP_PROTO_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IP_DSCP_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_IP_DSCP, /* u8 */ + ROCKER_TLV_OF_DPA_IP_ECN, /* u8 */ + ROCKER_TLV_OF_DPA_IP_ECN_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_DST_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_DST_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_DST_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_DST_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_IPV6, /* binary */ + ROCKER_TLV_OF_DPA_SRC_IPV6_MASK, /* binary */ + ROCKER_TLV_OF_DPA_SRC_ARP_IP, /* __be32 */ + ROCKER_TLV_OF_DPA_SRC_ARP_IP_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_L4_DST_PORT, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_DST_PORT_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_SRC_PORT, /* __be16 */ + ROCKER_TLV_OF_DPA_L4_SRC_PORT_MASK, /* __be16 */ + ROCKER_TLV_OF_DPA_ICMP_TYPE, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_TYPE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_CODE, /* u8 */ + ROCKER_TLV_OF_DPA_ICMP_CODE_MASK, /* u8 */ + ROCKER_TLV_OF_DPA_IPV6_LABEL, /* __be32 */ + ROCKER_TLV_OF_DPA_IPV6_LABEL_MASK, /* __be32 */ + ROCKER_TLV_OF_DPA_QUEUE_ID_ACTION, /* u8 */ + ROCKER_TLV_OF_DPA_NEW_QUEUE_ID, /* u8 */ + ROCKER_TLV_OF_DPA_CLEAR_ACTIONS, /* u32 */ + ROCKER_TLV_OF_DPA_POP_VLAN, /* u8 */ + ROCKER_TLV_OF_DPA_TTL_CHECK, /* u8 */ + ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, /* u8 */ + + __ROCKER_TLV_OF_DPA_MAX, + ROCKER_TLV_OF_DPA_MAX = __ROCKER_TLV_OF_DPA_MAX - 1, +}; + +/* OF-DPA table IDs */ + +enum rocker_of_dpa_table_id { + ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT = 0, + ROCKER_OF_DPA_TABLE_ID_VLAN = 10, + ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC = 20, + ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING = 30, + ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING = 40, + ROCKER_OF_DPA_TABLE_ID_BRIDGING = 50, + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY = 60, +}; + +/* OF-DPA flow stats */ +enum { + ROCKER_TLV_OF_DPA_FLOW_STAT_UNSPEC, + ROCKER_TLV_OF_DPA_FLOW_STAT_DURATION, /* u32 */ + ROCKER_TLV_OF_DPA_FLOW_STAT_RX_PKTS, /* u64 */ + ROCKER_TLV_OF_DPA_FLOW_STAT_TX_PKTS, /* u64 */ + + __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX, + ROCKER_TLV_OF_DPA_FLOW_STAT_MAX = __ROCKER_TLV_OF_DPA_FLOW_STAT_MAX - 1, +}; + +/* OF-DPA group types */ +enum rocker_of_dpa_group_type { + ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE = 0, + ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE, + ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST, + ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST, + ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD, + ROCKER_OF_DPA_GROUP_TYPE_L3_INTERFACE, + ROCKER_OF_DPA_GROUP_TYPE_L3_MCAST, + ROCKER_OF_DPA_GROUP_TYPE_L3_ECMP, + ROCKER_OF_DPA_GROUP_TYPE_L2_OVERLAY, +}; + +/* OF-DPA group L2 overlay types */ +enum rocker_of_dpa_overlay_type { + ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_UCAST = 0, + ROCKER_OF_DPA_OVERLAY_TYPE_FLOOD_MCAST, + ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_UCAST, + ROCKER_OF_DPA_OVERLAY_TYPE_MCAST_MCAST, +}; + +/* OF-DPA group ID encoding */ +#define ROCKER_GROUP_TYPE_SHIFT 28 +#define ROCKER_GROUP_TYPE_MASK 0xf0000000 +#define ROCKER_GROUP_VLAN_SHIFT 16 +#define ROCKER_GROUP_VLAN_MASK 0x0fff0000 +#define ROCKER_GROUP_PORT_SHIFT 0 +#define ROCKER_GROUP_PORT_MASK 0x0000ffff +#define ROCKER_GROUP_TUNNEL_ID_SHIFT 12 +#define ROCKER_GROUP_TUNNEL_ID_MASK 0x0ffff000 +#define ROCKER_GROUP_SUBTYPE_SHIFT 10 +#define ROCKER_GROUP_SUBTYPE_MASK 0x00000c00 +#define ROCKER_GROUP_INDEX_SHIFT 0 +#define ROCKER_GROUP_INDEX_MASK 0x0000ffff +#define ROCKER_GROUP_INDEX_LONG_SHIFT 0 +#define ROCKER_GROUP_INDEX_LONG_MASK 0x0fffffff + +#define ROCKER_GROUP_TYPE_GET(group_id) \ + (((group_id) & ROCKER_GROUP_TYPE_MASK) >> ROCKER_GROUP_TYPE_SHIFT) +#define ROCKER_GROUP_TYPE_SET(type) \ + (((type) << ROCKER_GROUP_TYPE_SHIFT) & ROCKER_GROUP_TYPE_MASK) +#define ROCKER_GROUP_VLAN_GET(group_id) \ + (((group_id) & ROCKER_GROUP_VLAN_ID_MASK) >> ROCKER_GROUP_VLAN_ID_SHIFT) +#define ROCKER_GROUP_VLAN_SET(vlan_id) \ + (((vlan_id) << ROCKER_GROUP_VLAN_SHIFT) & ROCKER_GROUP_VLAN_MASK) +#define ROCKER_GROUP_PORT_GET(group_id) \ + (((group_id) & ROCKER_GROUP_PORT_MASK) >> ROCKER_GROUP_PORT_SHIFT) +#define ROCKER_GROUP_PORT_SET(port) \ + (((port) << ROCKER_GROUP_PORT_SHIFT) & ROCKER_GROUP_PORT_MASK) +#define ROCKER_GROUP_INDEX_GET(group_id) \ + (((group_id) & ROCKER_GROUP_INDEX_MASK) >> ROCKER_GROUP_INDEX_SHIFT) +#define ROCKER_GROUP_INDEX_SET(index) \ + (((index) << ROCKER_GROUP_INDEX_SHIFT) & ROCKER_GROUP_INDEX_MASK) +#define ROCKER_GROUP_INDEX_LONG_GET(group_id) \ + (((group_id) & ROCKER_GROUP_INDEX_LONG_MASK) >> \ + ROCKER_GROUP_INDEX_LONG_SHIFT) +#define ROCKER_GROUP_INDEX_LONG_SET(index) \ + (((index) << ROCKER_GROUP_INDEX_LONG_SHIFT) & \ + ROCKER_GROUP_INDEX_LONG_MASK) + +#define ROCKER_GROUP_NONE 0 +#define ROCKER_GROUP_L2_INTERFACE(vlan_id, port) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE) |\ + ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_PORT_SET(port)) +#define ROCKER_GROUP_L2_REWRITE(index) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE) |\ + ROCKER_GROUP_INDEX_LONG_SET(index)) +#define ROCKER_GROUP_L2_MCAST(vlan_id, index) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST) |\ + ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_INDEX_SET(index)) +#define ROCKER_GROUP_L2_FLOOD(vlan_id, index) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD) |\ + ROCKER_GROUP_VLAN_SET(ntohs(vlan_id)) | ROCKER_GROUP_INDEX_SET(index)) +#define ROCKER_GROUP_L3_UNICAST(index) \ + (ROCKER_GROUP_TYPE_SET(ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST) |\ + ROCKER_GROUP_INDEX_LONG_SET(index)) + +/* Rocker general purpose registers */ +#define ROCKER_CONTROL 0x0300 +#define ROCKER_PORT_PHYS_COUNT 0x0304 +#define ROCKER_PORT_PHYS_LINK_STATUS 0x0310 /* 8-byte */ +#define ROCKER_PORT_PHYS_ENABLE 0x0318 /* 8-byte */ +#define ROCKER_SWITCH_ID 0x0320 /* 8-byte */ + +/* Rocker control bits */ +#define ROCKER_CONTROL_RESET BIT(0) + +#endif diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c new file mode 100644 index 000000000..28b775e5a --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_main.c @@ -0,0 +1,2909 @@ +/* + * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/wait.h> +#include <linux/spinlock.h> +#include <linux/sort.h> +#include <linux/random.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/socket.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> +#include <linux/if_bridge.h> +#include <linux/bitops.h> +#include <linux/ctype.h> +#include <net/switchdev.h> +#include <net/rtnetlink.h> +#include <net/netevent.h> +#include <net/arp.h> +#include <linux/io-64-nonatomic-lo-hi.h> +#include <generated/utsrelease.h> + +#include "rocker_hw.h" +#include "rocker.h" +#include "rocker_tlv.h" + +static const char rocker_driver_name[] = "rocker"; + +static const struct pci_device_id rocker_pci_id_table[] = { + {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0}, + {0, } +}; + +struct rocker_wait { + wait_queue_head_t wait; + bool done; + bool nowait; +}; + +static void rocker_wait_reset(struct rocker_wait *wait) +{ + wait->done = false; + wait->nowait = false; +} + +static void rocker_wait_init(struct rocker_wait *wait) +{ + init_waitqueue_head(&wait->wait); + rocker_wait_reset(wait); +} + +static struct rocker_wait *rocker_wait_create(void) +{ + struct rocker_wait *wait; + + wait = kzalloc(sizeof(*wait), GFP_KERNEL); + if (!wait) + return NULL; + return wait; +} + +static void rocker_wait_destroy(struct rocker_wait *wait) +{ + kfree(wait); +} + +static bool rocker_wait_event_timeout(struct rocker_wait *wait, + unsigned long timeout) +{ + wait_event_timeout(wait->wait, wait->done, HZ / 10); + if (!wait->done) + return false; + return true; +} + +static void rocker_wait_wake_up(struct rocker_wait *wait) +{ + wait->done = true; + wake_up(&wait->wait); +} + +static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector) +{ + return rocker->msix_entries[vector].vector; +} + +static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port) +{ + return rocker_msix_vector(rocker_port->rocker, + ROCKER_MSIX_VEC_TX(rocker_port->port_number)); +} + +static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port) +{ + return rocker_msix_vector(rocker_port->rocker, + ROCKER_MSIX_VEC_RX(rocker_port->port_number)); +} + +#define rocker_write32(rocker, reg, val) \ + writel((val), (rocker)->hw_addr + (ROCKER_ ## reg)) +#define rocker_read32(rocker, reg) \ + readl((rocker)->hw_addr + (ROCKER_ ## reg)) +#define rocker_write64(rocker, reg, val) \ + writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg)) +#define rocker_read64(rocker, reg) \ + readq((rocker)->hw_addr + (ROCKER_ ## reg)) + +/***************************** + * HW basic testing functions + *****************************/ + +static int rocker_reg_test(const struct rocker *rocker) +{ + const struct pci_dev *pdev = rocker->pdev; + u64 test_reg; + u64 rnd; + + rnd = prandom_u32(); + rnd >>= 1; + rocker_write32(rocker, TEST_REG, rnd); + test_reg = rocker_read32(rocker, TEST_REG); + if (test_reg != rnd * 2) { + dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n", + test_reg, rnd * 2); + return -EIO; + } + + rnd = prandom_u32(); + rnd <<= 31; + rnd |= prandom_u32(); + rocker_write64(rocker, TEST_REG64, rnd); + test_reg = rocker_read64(rocker, TEST_REG64); + if (test_reg != rnd * 2) { + dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n", + test_reg, rnd * 2); + return -EIO; + } + + return 0; +} + +static int rocker_dma_test_one(const struct rocker *rocker, + struct rocker_wait *wait, u32 test_type, + dma_addr_t dma_handle, const unsigned char *buf, + const unsigned char *expect, size_t size) +{ + const struct pci_dev *pdev = rocker->pdev; + int i; + + rocker_wait_reset(wait); + rocker_write32(rocker, TEST_DMA_CTRL, test_type); + + if (!rocker_wait_event_timeout(wait, HZ / 10)) { + dev_err(&pdev->dev, "no interrupt received within a timeout\n"); + return -EIO; + } + + for (i = 0; i < size; i++) { + if (buf[i] != expect[i]) { + dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected", + buf[i], i, expect[i]); + return -EIO; + } + } + return 0; +} + +#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4) +#define ROCKER_TEST_DMA_FILL_PATTERN 0x96 + +static int rocker_dma_test_offset(const struct rocker *rocker, + struct rocker_wait *wait, int offset) +{ + struct pci_dev *pdev = rocker->pdev; + unsigned char *alloc; + unsigned char *buf; + unsigned char *expect; + dma_addr_t dma_handle; + int i; + int err; + + alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset, + GFP_KERNEL | GFP_DMA); + if (!alloc) + return -ENOMEM; + buf = alloc + offset; + expect = buf + ROCKER_TEST_DMA_BUF_SIZE; + + dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(pdev, dma_handle)) { + err = -EIO; + goto free_alloc; + } + + rocker_write64(rocker, TEST_DMA_ADDR, dma_handle); + rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE); + + memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE); + err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL, + dma_handle, buf, expect, + ROCKER_TEST_DMA_BUF_SIZE); + if (err) + goto unmap; + + memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE); + err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR, + dma_handle, buf, expect, + ROCKER_TEST_DMA_BUF_SIZE); + if (err) + goto unmap; + + prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); + for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) + expect[i] = ~buf[i]; + err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, + dma_handle, buf, expect, + ROCKER_TEST_DMA_BUF_SIZE); + if (err) + goto unmap; + +unmap: + pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE, + PCI_DMA_BIDIRECTIONAL); +free_alloc: + kfree(alloc); + + return err; +} + +static int rocker_dma_test(const struct rocker *rocker, + struct rocker_wait *wait) +{ + int i; + int err; + + for (i = 0; i < 8; i++) { + err = rocker_dma_test_offset(rocker, wait, i); + if (err) + return err; + } + return 0; +} + +static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id) +{ + struct rocker_wait *wait = dev_id; + + rocker_wait_wake_up(wait); + + return IRQ_HANDLED; +} + +static int rocker_basic_hw_test(const struct rocker *rocker) +{ + const struct pci_dev *pdev = rocker->pdev; + struct rocker_wait wait; + int err; + + err = rocker_reg_test(rocker); + if (err) { + dev_err(&pdev->dev, "reg test failed\n"); + return err; + } + + err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), + rocker_test_irq_handler, 0, + rocker_driver_name, &wait); + if (err) { + dev_err(&pdev->dev, "cannot assign test irq\n"); + return err; + } + + rocker_wait_init(&wait); + rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST); + + if (!rocker_wait_event_timeout(&wait, HZ / 10)) { + dev_err(&pdev->dev, "no interrupt received within a timeout\n"); + err = -EIO; + goto free_irq; + } + + err = rocker_dma_test(rocker, &wait); + if (err) + dev_err(&pdev->dev, "dma test failed\n"); + +free_irq: + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait); + return err; +} + +/****************************************** + * DMA rings and descriptors manipulations + ******************************************/ + +static u32 __pos_inc(u32 pos, size_t limit) +{ + return ++pos == limit ? 0 : pos; +} + +static int rocker_desc_err(const struct rocker_desc_info *desc_info) +{ + int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; + + switch (err) { + case ROCKER_OK: + return 0; + case -ROCKER_ENOENT: + return -ENOENT; + case -ROCKER_ENXIO: + return -ENXIO; + case -ROCKER_ENOMEM: + return -ENOMEM; + case -ROCKER_EEXIST: + return -EEXIST; + case -ROCKER_EINVAL: + return -EINVAL; + case -ROCKER_EMSGSIZE: + return -EMSGSIZE; + case -ROCKER_ENOTSUP: + return -EOPNOTSUPP; + case -ROCKER_ENOBUFS: + return -ENOBUFS; + } + + return -EINVAL; +} + +static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info) +{ + desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN; +} + +static bool rocker_desc_gen(const struct rocker_desc_info *desc_info) +{ + u32 comp_err = desc_info->desc->comp_err; + + return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false; +} + +static void * +rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info) +{ + return (void *)(uintptr_t)desc_info->desc->cookie; +} + +static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info, + void *ptr) +{ + desc_info->desc->cookie = (uintptr_t) ptr; +} + +static struct rocker_desc_info * +rocker_desc_head_get(const struct rocker_dma_ring_info *info) +{ + static struct rocker_desc_info *desc_info; + u32 head = __pos_inc(info->head, info->size); + + desc_info = &info->desc_info[info->head]; + if (head == info->tail) + return NULL; /* ring full */ + desc_info->tlv_size = 0; + return desc_info; +} + +static void rocker_desc_commit(const struct rocker_desc_info *desc_info) +{ + desc_info->desc->buf_size = desc_info->data_size; + desc_info->desc->tlv_size = desc_info->tlv_size; +} + +static void rocker_desc_head_set(const struct rocker *rocker, + struct rocker_dma_ring_info *info, + const struct rocker_desc_info *desc_info) +{ + u32 head = __pos_inc(info->head, info->size); + + BUG_ON(head == info->tail); + rocker_desc_commit(desc_info); + info->head = head; + rocker_write32(rocker, DMA_DESC_HEAD(info->type), head); +} + +static struct rocker_desc_info * +rocker_desc_tail_get(struct rocker_dma_ring_info *info) +{ + static struct rocker_desc_info *desc_info; + + if (info->tail == info->head) + return NULL; /* nothing to be done between head and tail */ + desc_info = &info->desc_info[info->tail]; + if (!rocker_desc_gen(desc_info)) + return NULL; /* gen bit not set, desc is not ready yet */ + info->tail = __pos_inc(info->tail, info->size); + desc_info->tlv_size = desc_info->desc->tlv_size; + return desc_info; +} + +static void rocker_dma_ring_credits_set(const struct rocker *rocker, + const struct rocker_dma_ring_info *info, + u32 credits) +{ + if (credits) + rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits); +} + +static unsigned long rocker_dma_ring_size_fix(size_t size) +{ + return max(ROCKER_DMA_SIZE_MIN, + min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX)); +} + +static int rocker_dma_ring_create(const struct rocker *rocker, + unsigned int type, + size_t size, + struct rocker_dma_ring_info *info) +{ + int i; + + BUG_ON(size != rocker_dma_ring_size_fix(size)); + info->size = size; + info->type = type; + info->head = 0; + info->tail = 0; + info->desc_info = kcalloc(info->size, sizeof(*info->desc_info), + GFP_KERNEL); + if (!info->desc_info) + return -ENOMEM; + + info->desc = pci_alloc_consistent(rocker->pdev, + info->size * sizeof(*info->desc), + &info->mapaddr); + if (!info->desc) { + kfree(info->desc_info); + return -ENOMEM; + } + + for (i = 0; i < info->size; i++) + info->desc_info[i].desc = &info->desc[i]; + + rocker_write32(rocker, DMA_DESC_CTRL(info->type), + ROCKER_DMA_DESC_CTRL_RESET); + rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr); + rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size); + + return 0; +} + +static void rocker_dma_ring_destroy(const struct rocker *rocker, + const struct rocker_dma_ring_info *info) +{ + rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0); + + pci_free_consistent(rocker->pdev, + info->size * sizeof(struct rocker_desc), + info->desc, info->mapaddr); + kfree(info->desc_info); +} + +static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker, + struct rocker_dma_ring_info *info) +{ + int i; + + BUG_ON(info->head || info->tail); + + /* When ring is consumer, we need to advance head for each desc. + * That tells hw that the desc is ready to be used by it. + */ + for (i = 0; i < info->size - 1; i++) + rocker_desc_head_set(rocker, info, &info->desc_info[i]); + rocker_desc_commit(&info->desc_info[i]); +} + +static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker, + const struct rocker_dma_ring_info *info, + int direction, size_t buf_size) +{ + struct pci_dev *pdev = rocker->pdev; + int i; + int err; + + for (i = 0; i < info->size; i++) { + struct rocker_desc_info *desc_info = &info->desc_info[i]; + struct rocker_desc *desc = &info->desc[i]; + dma_addr_t dma_handle; + char *buf; + + buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA); + if (!buf) { + err = -ENOMEM; + goto rollback; + } + + dma_handle = pci_map_single(pdev, buf, buf_size, direction); + if (pci_dma_mapping_error(pdev, dma_handle)) { + kfree(buf); + err = -EIO; + goto rollback; + } + + desc_info->data = buf; + desc_info->data_size = buf_size; + dma_unmap_addr_set(desc_info, mapaddr, dma_handle); + + desc->buf_addr = dma_handle; + desc->buf_size = buf_size; + } + return 0; + +rollback: + for (i--; i >= 0; i--) { + const struct rocker_desc_info *desc_info = &info->desc_info[i]; + + pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), + desc_info->data_size, direction); + kfree(desc_info->data); + } + return err; +} + +static void rocker_dma_ring_bufs_free(const struct rocker *rocker, + const struct rocker_dma_ring_info *info, + int direction) +{ + struct pci_dev *pdev = rocker->pdev; + int i; + + for (i = 0; i < info->size; i++) { + const struct rocker_desc_info *desc_info = &info->desc_info[i]; + struct rocker_desc *desc = &info->desc[i]; + + desc->buf_addr = 0; + desc->buf_size = 0; + pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr), + desc_info->data_size, direction); + kfree(desc_info->data); + } +} + +static int rocker_dma_cmd_ring_wait_alloc(struct rocker_desc_info *desc_info) +{ + struct rocker_wait *wait; + + wait = rocker_wait_create(); + if (!wait) + return -ENOMEM; + rocker_desc_cookie_ptr_set(desc_info, wait); + return 0; +} + +static void +rocker_dma_cmd_ring_wait_free(const struct rocker_desc_info *desc_info) +{ + struct rocker_wait *wait = rocker_desc_cookie_ptr_get(desc_info); + + rocker_wait_destroy(wait); +} + +static int rocker_dma_cmd_ring_waits_alloc(const struct rocker *rocker) +{ + const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; + int i; + int err; + + for (i = 0; i < cmd_ring->size; i++) { + err = rocker_dma_cmd_ring_wait_alloc(&cmd_ring->desc_info[i]); + if (err) + goto rollback; + } + return 0; + +rollback: + for (i--; i >= 0; i--) + rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); + return err; +} + +static void rocker_dma_cmd_ring_waits_free(const struct rocker *rocker) +{ + const struct rocker_dma_ring_info *cmd_ring = &rocker->cmd_ring; + int i; + + for (i = 0; i < cmd_ring->size; i++) + rocker_dma_cmd_ring_wait_free(&cmd_ring->desc_info[i]); +} + +static int rocker_dma_rings_init(struct rocker *rocker) +{ + const struct pci_dev *pdev = rocker->pdev; + int err; + + err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD, + ROCKER_DMA_CMD_DEFAULT_SIZE, + &rocker->cmd_ring); + if (err) { + dev_err(&pdev->dev, "failed to create command dma ring\n"); + return err; + } + + spin_lock_init(&rocker->cmd_ring_lock); + + err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring, + PCI_DMA_BIDIRECTIONAL, PAGE_SIZE); + if (err) { + dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n"); + goto err_dma_cmd_ring_bufs_alloc; + } + + err = rocker_dma_cmd_ring_waits_alloc(rocker); + if (err) { + dev_err(&pdev->dev, "failed to alloc command dma ring waits\n"); + goto err_dma_cmd_ring_waits_alloc; + } + + err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT, + ROCKER_DMA_EVENT_DEFAULT_SIZE, + &rocker->event_ring); + if (err) { + dev_err(&pdev->dev, "failed to create event dma ring\n"); + goto err_dma_event_ring_create; + } + + err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring, + PCI_DMA_FROMDEVICE, PAGE_SIZE); + if (err) { + dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n"); + goto err_dma_event_ring_bufs_alloc; + } + rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring); + return 0; + +err_dma_event_ring_bufs_alloc: + rocker_dma_ring_destroy(rocker, &rocker->event_ring); +err_dma_event_ring_create: + rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, + PCI_DMA_BIDIRECTIONAL); +err_dma_cmd_ring_waits_alloc: + rocker_dma_cmd_ring_waits_free(rocker); +err_dma_cmd_ring_bufs_alloc: + rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); + return err; +} + +static void rocker_dma_rings_fini(struct rocker *rocker) +{ + rocker_dma_ring_bufs_free(rocker, &rocker->event_ring, + PCI_DMA_BIDIRECTIONAL); + rocker_dma_ring_destroy(rocker, &rocker->event_ring); + rocker_dma_cmd_ring_waits_free(rocker); + rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring, + PCI_DMA_BIDIRECTIONAL); + rocker_dma_ring_destroy(rocker, &rocker->cmd_ring); +} + +static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + struct sk_buff *skb, size_t buf_len) +{ + const struct rocker *rocker = rocker_port->rocker; + struct pci_dev *pdev = rocker->pdev; + dma_addr_t dma_handle; + + dma_handle = pci_map_single(pdev, skb->data, buf_len, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(pdev, dma_handle)) + return -EIO; + if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle)) + goto tlv_put_failure; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len)) + goto tlv_put_failure; + return 0; + +tlv_put_failure: + pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE); + desc_info->tlv_size = 0; + return -EMSGSIZE; +} + +static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port) +{ + return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; +} + +static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info) +{ + struct net_device *dev = rocker_port->dev; + struct sk_buff *skb; + size_t buf_len = rocker_port_rx_buf_len(rocker_port); + int err; + + /* Ensure that hw will see tlv_size zero in case of an error. + * That tells hw to use another descriptor. + */ + rocker_desc_cookie_ptr_set(desc_info, NULL); + desc_info->tlv_size = 0; + + skb = netdev_alloc_skb_ip_align(dev, buf_len); + if (!skb) + return -ENOMEM; + err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len); + if (err) { + dev_kfree_skb_any(skb); + return err; + } + rocker_desc_cookie_ptr_set(desc_info, skb); + return 0; +} + +static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker, + const struct rocker_tlv **attrs) +{ + struct pci_dev *pdev = rocker->pdev; + dma_addr_t dma_handle; + size_t len; + + if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] || + !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]) + return; + dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]); + len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]); + pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE); +} + +static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker, + const struct rocker_desc_info *desc_info) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; + struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); + + if (!skb) + return; + rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); + rocker_dma_rx_ring_skb_unmap(rocker, attrs); + dev_kfree_skb_any(skb); +} + +static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port) +{ + const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; + const struct rocker *rocker = rocker_port->rocker; + int i; + int err; + + for (i = 0; i < rx_ring->size; i++) { + err = rocker_dma_rx_ring_skb_alloc(rocker_port, + &rx_ring->desc_info[i]); + if (err) + goto rollback; + } + return 0; + +rollback: + for (i--; i >= 0; i--) + rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); + return err; +} + +static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port) +{ + const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring; + const struct rocker *rocker = rocker_port->rocker; + int i; + + for (i = 0; i < rx_ring->size; i++) + rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]); +} + +static int rocker_port_dma_rings_init(struct rocker_port *rocker_port) +{ + struct rocker *rocker = rocker_port->rocker; + int err; + + err = rocker_dma_ring_create(rocker, + ROCKER_DMA_TX(rocker_port->port_number), + ROCKER_DMA_TX_DEFAULT_SIZE, + &rocker_port->tx_ring); + if (err) { + netdev_err(rocker_port->dev, "failed to create tx dma ring\n"); + return err; + } + + err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring, + PCI_DMA_TODEVICE, + ROCKER_DMA_TX_DESC_SIZE); + if (err) { + netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n"); + goto err_dma_tx_ring_bufs_alloc; + } + + err = rocker_dma_ring_create(rocker, + ROCKER_DMA_RX(rocker_port->port_number), + ROCKER_DMA_RX_DEFAULT_SIZE, + &rocker_port->rx_ring); + if (err) { + netdev_err(rocker_port->dev, "failed to create rx dma ring\n"); + goto err_dma_rx_ring_create; + } + + err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring, + PCI_DMA_BIDIRECTIONAL, + ROCKER_DMA_RX_DESC_SIZE); + if (err) { + netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n"); + goto err_dma_rx_ring_bufs_alloc; + } + + err = rocker_dma_rx_ring_skbs_alloc(rocker_port); + if (err) { + netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n"); + goto err_dma_rx_ring_skbs_alloc; + } + rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring); + + return 0; + +err_dma_rx_ring_skbs_alloc: + rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, + PCI_DMA_BIDIRECTIONAL); +err_dma_rx_ring_bufs_alloc: + rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); +err_dma_rx_ring_create: + rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, + PCI_DMA_TODEVICE); +err_dma_tx_ring_bufs_alloc: + rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); + return err; +} + +static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port) +{ + struct rocker *rocker = rocker_port->rocker; + + rocker_dma_rx_ring_skbs_free(rocker_port); + rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring, + PCI_DMA_BIDIRECTIONAL); + rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring); + rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring, + PCI_DMA_TODEVICE); + rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring); +} + +static void rocker_port_set_enable(const struct rocker_port *rocker_port, + bool enable) +{ + u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); + + if (enable) + val |= 1ULL << rocker_port->pport; + else + val &= ~(1ULL << rocker_port->pport); + rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); +} + +/******************************** + * Interrupt handler and helpers + ********************************/ + +static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id) +{ + struct rocker *rocker = dev_id; + const struct rocker_desc_info *desc_info; + struct rocker_wait *wait; + u32 credits = 0; + + spin_lock(&rocker->cmd_ring_lock); + while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) { + wait = rocker_desc_cookie_ptr_get(desc_info); + if (wait->nowait) { + rocker_desc_gen_clear(desc_info); + } else { + rocker_wait_wake_up(wait); + } + credits++; + } + spin_unlock(&rocker->cmd_ring_lock); + rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits); + + return IRQ_HANDLED; +} + +static void rocker_port_link_up(const struct rocker_port *rocker_port) +{ + netif_carrier_on(rocker_port->dev); + netdev_info(rocker_port->dev, "Link is up\n"); +} + +static void rocker_port_link_down(const struct rocker_port *rocker_port) +{ + netif_carrier_off(rocker_port->dev); + netdev_info(rocker_port->dev, "Link is down\n"); +} + +static int rocker_event_link_change(const struct rocker *rocker, + const struct rocker_tlv *info) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1]; + unsigned int port_number; + bool link_up; + struct rocker_port *rocker_port; + + rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info); + if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] || + !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]) + return -EIO; + port_number = + rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1; + link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]); + + if (port_number >= rocker->port_count) + return -EINVAL; + + rocker_port = rocker->ports[port_number]; + if (netif_carrier_ok(rocker_port->dev) != link_up) { + if (link_up) + rocker_port_link_up(rocker_port); + else + rocker_port_link_down(rocker_port); + } + + return 0; +} + +static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, + const unsigned char *addr, + __be16 vlan_id); + +static int rocker_event_mac_vlan_seen(const struct rocker *rocker, + const struct rocker_tlv *info) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1]; + unsigned int port_number; + struct rocker_port *rocker_port; + const unsigned char *addr; + __be16 vlan_id; + + rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info); + if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] || + !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] || + !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]) + return -EIO; + port_number = + rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1; + addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]); + vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]); + + if (port_number >= rocker->port_count) + return -EINVAL; + + rocker_port = rocker->ports[port_number]; + return rocker_world_port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); +} + +static int rocker_event_process(const struct rocker *rocker, + const struct rocker_desc_info *desc_info) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1]; + const struct rocker_tlv *info; + u16 type; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info); + if (!attrs[ROCKER_TLV_EVENT_TYPE] || + !attrs[ROCKER_TLV_EVENT_INFO]) + return -EIO; + + type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]); + info = attrs[ROCKER_TLV_EVENT_INFO]; + + switch (type) { + case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED: + return rocker_event_link_change(rocker, info); + case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN: + return rocker_event_mac_vlan_seen(rocker, info); + } + + return -EOPNOTSUPP; +} + +static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id) +{ + struct rocker *rocker = dev_id; + const struct pci_dev *pdev = rocker->pdev; + const struct rocker_desc_info *desc_info; + u32 credits = 0; + int err; + + while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) { + err = rocker_desc_err(desc_info); + if (err) { + dev_err(&pdev->dev, "event desc received with err %d\n", + err); + } else { + err = rocker_event_process(rocker, desc_info); + if (err) + dev_err(&pdev->dev, "event processing failed with err %d\n", + err); + } + rocker_desc_gen_clear(desc_info); + rocker_desc_head_set(rocker, &rocker->event_ring, desc_info); + credits++; + } + rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits); + + return IRQ_HANDLED; +} + +static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id) +{ + struct rocker_port *rocker_port = dev_id; + + napi_schedule(&rocker_port->napi_tx); + return IRQ_HANDLED; +} + +static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id) +{ + struct rocker_port *rocker_port = dev_id; + + napi_schedule(&rocker_port->napi_rx); + return IRQ_HANDLED; +} + +/******************** + * Command interface + ********************/ + +int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait, + rocker_cmd_prep_cb_t prepare, void *prepare_priv, + rocker_cmd_proc_cb_t process, void *process_priv) +{ + struct rocker *rocker = rocker_port->rocker; + struct rocker_desc_info *desc_info; + struct rocker_wait *wait; + unsigned long lock_flags; + int err; + + spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags); + + desc_info = rocker_desc_head_get(&rocker->cmd_ring); + if (!desc_info) { + spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); + return -EAGAIN; + } + + wait = rocker_desc_cookie_ptr_get(desc_info); + rocker_wait_init(wait); + wait->nowait = nowait; + + err = prepare(rocker_port, desc_info, prepare_priv); + if (err) { + spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); + return err; + } + + rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info); + + spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags); + + if (nowait) + return 0; + + if (!rocker_wait_event_timeout(wait, HZ / 10)) + return -EIO; + + err = rocker_desc_err(desc_info); + if (err) + return err; + + if (process) + err = process(rocker_port, desc_info, process_priv); + + rocker_desc_gen_clear(desc_info); + return err; +} + +static int +rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int +rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv) +{ + struct ethtool_cmd *ecmd = priv; + const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; + u32 speed; + u8 duplex; + u8 autoneg; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); + if (!attrs[ROCKER_TLV_CMD_INFO]) + return -EIO; + + rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + attrs[ROCKER_TLV_CMD_INFO]); + if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] || + !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] || + !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) + return -EIO; + + speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]); + duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]); + autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]); + + ecmd->transceiver = XCVR_INTERNAL; + ecmd->supported = SUPPORTED_TP; + ecmd->phy_address = 0xff; + ecmd->port = PORT_TP; + ethtool_cmd_speed_set(ecmd, speed); + ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF; + ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE; + + return 0; +} + +static int +rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv) +{ + unsigned char *macaddr = priv; + const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; + const struct rocker_tlv *attr; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); + if (!attrs[ROCKER_TLV_CMD_INFO]) + return -EIO; + + rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + attrs[ROCKER_TLV_CMD_INFO]); + attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]; + if (!attr) + return -EIO; + + if (rocker_tlv_len(attr) != ETH_ALEN) + return -EINVAL; + + ether_addr_copy(macaddr, rocker_tlv_data(attr)); + return 0; +} + +static int +rocker_cmd_get_port_settings_mode_proc(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv) +{ + u8 *p_mode = priv; + const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; + const struct rocker_tlv *attr; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); + if (!attrs[ROCKER_TLV_CMD_INFO]) + return -EIO; + + rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + attrs[ROCKER_TLV_CMD_INFO]); + attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]; + if (!attr) + return -EIO; + + *p_mode = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); + return 0; +} + +struct port_name { + char *buf; + size_t len; +}; + +static int +rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv) +{ + const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1]; + const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + struct port_name *name = priv; + const struct rocker_tlv *attr; + size_t i, j, len; + const char *str; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); + if (!attrs[ROCKER_TLV_CMD_INFO]) + return -EIO; + + rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX, + attrs[ROCKER_TLV_CMD_INFO]); + attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME]; + if (!attr) + return -EIO; + + len = min_t(size_t, rocker_tlv_len(attr), name->len); + str = rocker_tlv_data(attr); + + /* make sure name only contains alphanumeric characters */ + for (i = j = 0; i < len; ++i) { + if (isalnum(str[i])) { + name->buf[j] = str[i]; + j++; + } + } + + if (j == 0) + return -EIO; + + name->buf[j] = '\0'; + + return 0; +} + +static int +rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + struct ethtool_cmd *ecmd = priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, + ethtool_cmd_speed(ecmd))) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, + ecmd->duplex)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, + ecmd->autoneg)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int +rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + const unsigned char *macaddr = priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR, + ETH_ALEN, macaddr)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int +rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + int mtu = *(int *)priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU, + mtu)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int +rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + bool learning = *(bool *)priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING, + learning)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + return 0; +} + +static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port, + struct ethtool_cmd *ecmd) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_get_port_settings_prep, NULL, + rocker_cmd_get_port_settings_ethtool_proc, + ecmd); +} + +static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port, + unsigned char *macaddr) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_get_port_settings_prep, NULL, + rocker_cmd_get_port_settings_macaddr_proc, + macaddr); +} + +static int rocker_cmd_get_port_settings_mode(struct rocker_port *rocker_port, + u8 *p_mode) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_get_port_settings_prep, NULL, + rocker_cmd_get_port_settings_mode_proc, p_mode); +} + +static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port, + struct ethtool_cmd *ecmd) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_set_port_settings_ethtool_prep, + ecmd, NULL, NULL); +} + +static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port, + unsigned char *macaddr) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_set_port_settings_macaddr_prep, + macaddr, NULL, NULL); +} + +static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port, + int mtu) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_set_port_settings_mtu_prep, + &mtu, NULL, NULL); +} + +int rocker_port_set_learning(struct rocker_port *rocker_port, + bool learning) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_set_port_learning_prep, + &learning, NULL, NULL); +} + +/********************** + * Worlds manipulation + **********************/ + +static struct rocker_world_ops *rocker_world_ops[] = { + &rocker_ofdpa_ops, +}; + +#define ROCKER_WORLD_OPS_LEN ARRAY_SIZE(rocker_world_ops) + +static struct rocker_world_ops *rocker_world_ops_find(u8 mode) +{ + int i; + + for (i = 0; i < ROCKER_WORLD_OPS_LEN; i++) + if (rocker_world_ops[i]->mode == mode) + return rocker_world_ops[i]; + return NULL; +} + +static int rocker_world_init(struct rocker *rocker, u8 mode) +{ + struct rocker_world_ops *wops; + int err; + + wops = rocker_world_ops_find(mode); + if (!wops) { + dev_err(&rocker->pdev->dev, "port mode \"%d\" is not supported\n", + mode); + return -EINVAL; + } + rocker->wops = wops; + rocker->wpriv = kzalloc(wops->priv_size, GFP_KERNEL); + if (!rocker->wpriv) + return -ENOMEM; + if (!wops->init) + return 0; + err = wops->init(rocker); + if (err) + kfree(rocker->wpriv); + return err; +} + +static void rocker_world_fini(struct rocker *rocker) +{ + struct rocker_world_ops *wops = rocker->wops; + + if (!wops || !wops->fini) + return; + wops->fini(rocker); + kfree(rocker->wpriv); +} + +static int rocker_world_check_init(struct rocker_port *rocker_port) +{ + struct rocker *rocker = rocker_port->rocker; + u8 mode; + int err; + + err = rocker_cmd_get_port_settings_mode(rocker_port, &mode); + if (err) { + dev_err(&rocker->pdev->dev, "failed to get port mode\n"); + return err; + } + if (rocker->wops) { + if (rocker->wops->mode != mode) { + dev_err(&rocker->pdev->dev, "hardware has ports in different worlds, which is not supported\n"); + return err; + } + return 0; + } + return rocker_world_init(rocker, mode); +} + +static int rocker_world_port_pre_init(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + int err; + + rocker_port->wpriv = kzalloc(wops->port_priv_size, GFP_KERNEL); + if (!rocker_port->wpriv) + return -ENOMEM; + if (!wops->port_pre_init) + return 0; + err = wops->port_pre_init(rocker_port); + if (err) + kfree(rocker_port->wpriv); + return 0; +} + +static int rocker_world_port_init(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_init) + return 0; + return wops->port_init(rocker_port); +} + +static void rocker_world_port_fini(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_fini) + return; + wops->port_fini(rocker_port); +} + +static void rocker_world_port_post_fini(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_post_fini) + return; + wops->port_post_fini(rocker_port); + kfree(rocker_port->wpriv); +} + +static int rocker_world_port_open(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_open) + return 0; + return wops->port_open(rocker_port); +} + +static void rocker_world_port_stop(struct rocker_port *rocker_port) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_stop) + return; + wops->port_stop(rocker_port); +} + +static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port, + u8 state, + struct switchdev_trans *trans) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_attr_stp_state_set) + return -EOPNOTSUPP; + return wops->port_attr_stp_state_set(rocker_port, state, trans); +} + +static int +rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port, + unsigned long brport_flags, + struct switchdev_trans *trans) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_attr_bridge_flags_set) + return -EOPNOTSUPP; + return wops->port_attr_bridge_flags_set(rocker_port, brport_flags, + trans); +} + +static int +rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port, + unsigned long *p_brport_flags) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_attr_bridge_flags_get) + return -EOPNOTSUPP; + return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags); +} + +static int +rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port, + u32 ageing_time, + struct switchdev_trans *trans) + +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_attr_bridge_ageing_time_set) + return -EOPNOTSUPP; + return wops->port_attr_bridge_ageing_time_set(rocker_port, ageing_time, + trans); +} + +static int +rocker_world_port_obj_vlan_add(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_vlan_add) + return -EOPNOTSUPP; + return wops->port_obj_vlan_add(rocker_port, vlan, trans); +} + +static int +rocker_world_port_obj_vlan_del(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_vlan_del) + return -EOPNOTSUPP; + return wops->port_obj_vlan_del(rocker_port, vlan); +} + +static int +rocker_world_port_obj_vlan_dump(const struct rocker_port *rocker_port, + struct switchdev_obj_port_vlan *vlan, + switchdev_obj_dump_cb_t *cb) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_vlan_dump) + return -EOPNOTSUPP; + return wops->port_obj_vlan_dump(rocker_port, vlan, cb); +} + +static int +rocker_world_port_obj_fib4_add(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4, + struct switchdev_trans *trans) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_fib4_add) + return -EOPNOTSUPP; + return wops->port_obj_fib4_add(rocker_port, fib4, trans); +} + +static int +rocker_world_port_obj_fib4_del(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_fib4_del) + return -EOPNOTSUPP; + return wops->port_obj_fib4_del(rocker_port, fib4); +} + +static int +rocker_world_port_obj_fdb_add(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb, + struct switchdev_trans *trans) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_fdb_add) + return -EOPNOTSUPP; + return wops->port_obj_fdb_add(rocker_port, fdb, trans); +} + +static int +rocker_world_port_obj_fdb_del(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_fdb_del) + return -EOPNOTSUPP; + return wops->port_obj_fdb_del(rocker_port, fdb); +} + +static int +rocker_world_port_obj_fdb_dump(const struct rocker_port *rocker_port, + struct switchdev_obj_port_fdb *fdb, + switchdev_obj_dump_cb_t *cb) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_obj_fdb_dump) + return -EOPNOTSUPP; + return wops->port_obj_fdb_dump(rocker_port, fdb, cb); +} + +static int rocker_world_port_master_linked(struct rocker_port *rocker_port, + struct net_device *master) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_master_linked) + return -EOPNOTSUPP; + return wops->port_master_linked(rocker_port, master); +} + +static int rocker_world_port_master_unlinked(struct rocker_port *rocker_port, + struct net_device *master) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_master_unlinked) + return -EOPNOTSUPP; + return wops->port_master_unlinked(rocker_port, master); +} + +static int rocker_world_port_neigh_update(struct rocker_port *rocker_port, + struct neighbour *n) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_neigh_update) + return -EOPNOTSUPP; + return wops->port_neigh_update(rocker_port, n); +} + +static int rocker_world_port_neigh_destroy(struct rocker_port *rocker_port, + struct neighbour *n) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_neigh_destroy) + return -EOPNOTSUPP; + return wops->port_neigh_destroy(rocker_port, n); +} + +static int rocker_world_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, + const unsigned char *addr, + __be16 vlan_id) +{ + struct rocker_world_ops *wops = rocker_port->rocker->wops; + + if (!wops->port_ev_mac_vlan_seen) + return -EOPNOTSUPP; + return wops->port_ev_mac_vlan_seen(rocker_port, addr, vlan_id); +} + +/***************** + * Net device ops + *****************/ + +static int rocker_port_open(struct net_device *dev) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int err; + + err = rocker_port_dma_rings_init(rocker_port); + if (err) + return err; + + err = request_irq(rocker_msix_tx_vector(rocker_port), + rocker_tx_irq_handler, 0, + rocker_driver_name, rocker_port); + if (err) { + netdev_err(rocker_port->dev, "cannot assign tx irq\n"); + goto err_request_tx_irq; + } + + err = request_irq(rocker_msix_rx_vector(rocker_port), + rocker_rx_irq_handler, 0, + rocker_driver_name, rocker_port); + if (err) { + netdev_err(rocker_port->dev, "cannot assign rx irq\n"); + goto err_request_rx_irq; + } + + err = rocker_world_port_open(rocker_port); + if (err) { + netdev_err(rocker_port->dev, "cannot open port in world\n"); + goto err_world_port_open; + } + + napi_enable(&rocker_port->napi_tx); + napi_enable(&rocker_port->napi_rx); + if (!dev->proto_down) + rocker_port_set_enable(rocker_port, true); + netif_start_queue(dev); + return 0; + +err_world_port_open: + free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); +err_request_rx_irq: + free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); +err_request_tx_irq: + rocker_port_dma_rings_fini(rocker_port); + return err; +} + +static int rocker_port_stop(struct net_device *dev) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + netif_stop_queue(dev); + rocker_port_set_enable(rocker_port, false); + napi_disable(&rocker_port->napi_rx); + napi_disable(&rocker_port->napi_tx); + rocker_world_port_stop(rocker_port); + free_irq(rocker_msix_rx_vector(rocker_port), rocker_port); + free_irq(rocker_msix_tx_vector(rocker_port), rocker_port); + rocker_port_dma_rings_fini(rocker_port); + + return 0; +} + +static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info) +{ + const struct rocker *rocker = rocker_port->rocker; + struct pci_dev *pdev = rocker->pdev; + const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1]; + struct rocker_tlv *attr; + int rem; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info); + if (!attrs[ROCKER_TLV_TX_FRAGS]) + return; + rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) { + const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1]; + dma_addr_t dma_handle; + size_t len; + + if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG) + continue; + rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX, + attr); + if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] || + !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) + continue; + dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]); + len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]); + pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE); + } +} + +static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + char *buf, size_t buf_len) +{ + const struct rocker *rocker = rocker_port->rocker; + struct pci_dev *pdev = rocker->pdev; + dma_addr_t dma_handle; + struct rocker_tlv *frag; + + dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE); + if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) { + if (net_ratelimit()) + netdev_err(rocker_port->dev, "failed to dma map tx frag\n"); + return -EIO; + } + frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG); + if (!frag) + goto unmap_frag; + if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR, + dma_handle)) + goto nest_cancel; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN, + buf_len)) + goto nest_cancel; + rocker_tlv_nest_end(desc_info, frag); + return 0; + +nest_cancel: + rocker_tlv_nest_cancel(desc_info, frag); +unmap_frag: + pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE); + return -EMSGSIZE; +} + +static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + struct rocker *rocker = rocker_port->rocker; + struct rocker_desc_info *desc_info; + struct rocker_tlv *frags; + int i; + int err; + + desc_info = rocker_desc_head_get(&rocker_port->tx_ring); + if (unlikely(!desc_info)) { + if (net_ratelimit()) + netdev_err(dev, "tx ring full when queue awake\n"); + return NETDEV_TX_BUSY; + } + + rocker_desc_cookie_ptr_set(desc_info, skb); + + frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS); + if (!frags) + goto out; + err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, + skb->data, skb_headlen(skb)); + if (err) + goto nest_cancel; + if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) { + err = skb_linearize(skb); + if (err) + goto unmap_frags; + } + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + err = rocker_tx_desc_frag_map_put(rocker_port, desc_info, + skb_frag_address(frag), + skb_frag_size(frag)); + if (err) + goto unmap_frags; + } + rocker_tlv_nest_end(desc_info, frags); + + rocker_desc_gen_clear(desc_info); + rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info); + + desc_info = rocker_desc_head_get(&rocker_port->tx_ring); + if (!desc_info) + netif_stop_queue(dev); + + return NETDEV_TX_OK; + +unmap_frags: + rocker_tx_desc_frags_unmap(rocker_port, desc_info); +nest_cancel: + rocker_tlv_nest_cancel(desc_info, frags); +out: + dev_kfree_skb(skb); + dev->stats.tx_dropped++; + + return NETDEV_TX_OK; +} + +static int rocker_port_set_mac_address(struct net_device *dev, void *p) +{ + struct sockaddr *addr = p; + struct rocker_port *rocker_port = netdev_priv(dev); + int err; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data); + if (err) + return err; + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + return 0; +} + +static int rocker_port_change_mtu(struct net_device *dev, int new_mtu) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int running = netif_running(dev); + int err; + +#define ROCKER_PORT_MIN_MTU 68 +#define ROCKER_PORT_MAX_MTU 9000 + + if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU) + return -EINVAL; + + if (running) + rocker_port_stop(dev); + + netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu); + dev->mtu = new_mtu; + + err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu); + if (err) + return err; + + if (running) + err = rocker_port_open(dev); + + return err; +} + +static int rocker_port_get_phys_port_name(struct net_device *dev, + char *buf, size_t len) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + struct port_name name = { .buf = buf, .len = len }; + int err; + + err = rocker_cmd_exec(rocker_port, false, + rocker_cmd_get_port_settings_prep, NULL, + rocker_cmd_get_port_settings_phys_name_proc, + &name); + + return err ? -EOPNOTSUPP : 0; +} + +static int rocker_port_change_proto_down(struct net_device *dev, + bool proto_down) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + if (rocker_port->dev->flags & IFF_UP) + rocker_port_set_enable(rocker_port, !proto_down); + rocker_port->dev->proto_down = proto_down; + return 0; +} + +static void rocker_port_neigh_destroy(struct neighbour *n) +{ + struct rocker_port *rocker_port = netdev_priv(n->dev); + int err; + + err = rocker_world_port_neigh_destroy(rocker_port, n); + if (err) + netdev_warn(rocker_port->dev, "failed to handle neigh destroy (err %d)\n", + err); +} + +static const struct net_device_ops rocker_port_netdev_ops = { + .ndo_open = rocker_port_open, + .ndo_stop = rocker_port_stop, + .ndo_start_xmit = rocker_port_xmit, + .ndo_set_mac_address = rocker_port_set_mac_address, + .ndo_change_mtu = rocker_port_change_mtu, + .ndo_bridge_getlink = switchdev_port_bridge_getlink, + .ndo_bridge_setlink = switchdev_port_bridge_setlink, + .ndo_bridge_dellink = switchdev_port_bridge_dellink, + .ndo_fdb_add = switchdev_port_fdb_add, + .ndo_fdb_del = switchdev_port_fdb_del, + .ndo_fdb_dump = switchdev_port_fdb_dump, + .ndo_get_phys_port_name = rocker_port_get_phys_port_name, + .ndo_change_proto_down = rocker_port_change_proto_down, + .ndo_neigh_destroy = rocker_port_neigh_destroy, +}; + +/******************** + * swdev interface + ********************/ + +static int rocker_port_attr_get(struct net_device *dev, + struct switchdev_attr *attr) +{ + const struct rocker_port *rocker_port = netdev_priv(dev); + const struct rocker *rocker = rocker_port->rocker; + int err = 0; + + switch (attr->id) { + case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: + attr->u.ppid.id_len = sizeof(rocker->hw.id); + memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len); + break; + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: + err = rocker_world_port_attr_bridge_flags_get(rocker_port, + &attr->u.brport_flags); + break; + default: + return -EOPNOTSUPP; + } + + return err; +} + +static int rocker_port_attr_set(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int err = 0; + + switch (attr->id) { + case SWITCHDEV_ATTR_ID_PORT_STP_STATE: + err = rocker_world_port_attr_stp_state_set(rocker_port, + attr->u.stp_state, + trans); + break; + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: + err = rocker_world_port_attr_bridge_flags_set(rocker_port, + attr->u.brport_flags, + trans); + break; + case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: + err = rocker_world_port_attr_bridge_ageing_time_set(rocker_port, + attr->u.ageing_time, + trans); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int rocker_port_obj_add(struct net_device *dev, + const struct switchdev_obj *obj, + struct switchdev_trans *trans) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int err = 0; + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + err = rocker_world_port_obj_vlan_add(rocker_port, + SWITCHDEV_OBJ_PORT_VLAN(obj), + trans); + break; + case SWITCHDEV_OBJ_ID_IPV4_FIB: + err = rocker_world_port_obj_fib4_add(rocker_port, + SWITCHDEV_OBJ_IPV4_FIB(obj), + trans); + break; + case SWITCHDEV_OBJ_ID_PORT_FDB: + err = rocker_world_port_obj_fdb_add(rocker_port, + SWITCHDEV_OBJ_PORT_FDB(obj), + trans); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int rocker_port_obj_del(struct net_device *dev, + const struct switchdev_obj *obj) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + int err = 0; + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + err = rocker_world_port_obj_vlan_del(rocker_port, + SWITCHDEV_OBJ_PORT_VLAN(obj)); + break; + case SWITCHDEV_OBJ_ID_IPV4_FIB: + err = rocker_world_port_obj_fib4_del(rocker_port, + SWITCHDEV_OBJ_IPV4_FIB(obj)); + break; + case SWITCHDEV_OBJ_ID_PORT_FDB: + err = rocker_world_port_obj_fdb_del(rocker_port, + SWITCHDEV_OBJ_PORT_FDB(obj)); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int rocker_port_obj_dump(struct net_device *dev, + struct switchdev_obj *obj, + switchdev_obj_dump_cb_t *cb) +{ + const struct rocker_port *rocker_port = netdev_priv(dev); + int err = 0; + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_FDB: + err = rocker_world_port_obj_fdb_dump(rocker_port, + SWITCHDEV_OBJ_PORT_FDB(obj), + cb); + break; + case SWITCHDEV_OBJ_ID_PORT_VLAN: + err = rocker_world_port_obj_vlan_dump(rocker_port, + SWITCHDEV_OBJ_PORT_VLAN(obj), + cb); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static const struct switchdev_ops rocker_port_switchdev_ops = { + .switchdev_port_attr_get = rocker_port_attr_get, + .switchdev_port_attr_set = rocker_port_attr_set, + .switchdev_port_obj_add = rocker_port_obj_add, + .switchdev_port_obj_del = rocker_port_obj_del, + .switchdev_port_obj_dump = rocker_port_obj_dump, +}; + +/******************** + * ethtool interface + ********************/ + +static int rocker_port_get_settings(struct net_device *dev, + struct ethtool_cmd *ecmd) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd); +} + +static int rocker_port_set_settings(struct net_device *dev, + struct ethtool_cmd *ecmd) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd); +} + +static void rocker_port_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *drvinfo) +{ + strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver)); + strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); +} + +static struct rocker_port_stats { + char str[ETH_GSTRING_LEN]; + int type; +} rocker_port_stats[] = { + { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, }, + { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, }, + { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, }, + { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, }, + + { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, }, + { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, }, + { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, }, + { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, }, +}; + +#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats) + +static void rocker_port_get_strings(struct net_device *netdev, u32 stringset, + u8 *data) +{ + u8 *p = data; + int i; + + switch (stringset) { + case ETH_SS_STATS: + for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { + memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN); + p += ETH_GSTRING_LEN; + } + break; + } +} + +static int +rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + struct rocker_tlv *cmd_stats; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, + ROCKER_TLV_CMD_TYPE_GET_PORT_STATS)) + return -EMSGSIZE; + + cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_stats) + return -EMSGSIZE; + + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT, + rocker_port->pport)) + return -EMSGSIZE; + + rocker_tlv_nest_end(desc_info, cmd_stats); + + return 0; +} + +static int +rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port, + const struct rocker_desc_info *desc_info, + void *priv) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1]; + const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1]; + const struct rocker_tlv *pattr; + u32 pport; + u64 *data = priv; + int i; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info); + + if (!attrs[ROCKER_TLV_CMD_INFO]) + return -EIO; + + rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX, + attrs[ROCKER_TLV_CMD_INFO]); + + if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]) + return -EIO; + + pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]); + if (pport != rocker_port->pport) + return -EIO; + + for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) { + pattr = stats_attrs[rocker_port_stats[i].type]; + if (!pattr) + continue; + + data[i] = rocker_tlv_get_u64(pattr); + } + + return 0; +} + +static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port, + void *priv) +{ + return rocker_cmd_exec(rocker_port, false, + rocker_cmd_get_port_stats_prep, NULL, + rocker_cmd_get_port_stats_ethtool_proc, + priv); +} + +static void rocker_port_get_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct rocker_port *rocker_port = netdev_priv(dev); + + if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) { + int i; + + for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i) + data[i] = 0; + } +} + +static int rocker_port_get_sset_count(struct net_device *netdev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return ROCKER_PORT_STATS_LEN; + default: + return -EOPNOTSUPP; + } +} + +static const struct ethtool_ops rocker_port_ethtool_ops = { + .get_settings = rocker_port_get_settings, + .set_settings = rocker_port_set_settings, + .get_drvinfo = rocker_port_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_strings = rocker_port_get_strings, + .get_ethtool_stats = rocker_port_get_stats, + .get_sset_count = rocker_port_get_sset_count, +}; + +/***************** + * NAPI interface + *****************/ + +static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi) +{ + return container_of(napi, struct rocker_port, napi_tx); +} + +static int rocker_port_poll_tx(struct napi_struct *napi, int budget) +{ + struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi); + const struct rocker *rocker = rocker_port->rocker; + const struct rocker_desc_info *desc_info; + u32 credits = 0; + int err; + + /* Cleanup tx descriptors */ + while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) { + struct sk_buff *skb; + + err = rocker_desc_err(desc_info); + if (err && net_ratelimit()) + netdev_err(rocker_port->dev, "tx desc received with err %d\n", + err); + rocker_tx_desc_frags_unmap(rocker_port, desc_info); + + skb = rocker_desc_cookie_ptr_get(desc_info); + if (err == 0) { + rocker_port->dev->stats.tx_packets++; + rocker_port->dev->stats.tx_bytes += skb->len; + } else { + rocker_port->dev->stats.tx_errors++; + } + + dev_kfree_skb_any(skb); + credits++; + } + + if (credits && netif_queue_stopped(rocker_port->dev)) + netif_wake_queue(rocker_port->dev); + + napi_complete(napi); + rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits); + + return 0; +} + +static int rocker_port_rx_proc(const struct rocker *rocker, + const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info) +{ + const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1]; + struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info); + size_t rx_len; + u16 rx_flags = 0; + + if (!skb) + return -ENOENT; + + rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info); + if (!attrs[ROCKER_TLV_RX_FRAG_LEN]) + return -EINVAL; + if (attrs[ROCKER_TLV_RX_FLAGS]) + rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]); + + rocker_dma_rx_ring_skb_unmap(rocker, attrs); + + rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]); + skb_put(skb, rx_len); + skb->protocol = eth_type_trans(skb, rocker_port->dev); + + if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD) + skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark; + + rocker_port->dev->stats.rx_packets++; + rocker_port->dev->stats.rx_bytes += skb->len; + + netif_receive_skb(skb); + + return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info); +} + +static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi) +{ + return container_of(napi, struct rocker_port, napi_rx); +} + +static int rocker_port_poll_rx(struct napi_struct *napi, int budget) +{ + struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi); + const struct rocker *rocker = rocker_port->rocker; + struct rocker_desc_info *desc_info; + u32 credits = 0; + int err; + + /* Process rx descriptors */ + while (credits < budget && + (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) { + err = rocker_desc_err(desc_info); + if (err) { + if (net_ratelimit()) + netdev_err(rocker_port->dev, "rx desc received with err %d\n", + err); + } else { + err = rocker_port_rx_proc(rocker, rocker_port, + desc_info); + if (err && net_ratelimit()) + netdev_err(rocker_port->dev, "rx processing failed with err %d\n", + err); + } + if (err) + rocker_port->dev->stats.rx_errors++; + + rocker_desc_gen_clear(desc_info); + rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info); + credits++; + } + + if (credits < budget) + napi_complete(napi); + + rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits); + + return credits; +} + +/***************** + * PCI driver ops + *****************/ + +static void rocker_carrier_init(const struct rocker_port *rocker_port) +{ + const struct rocker *rocker = rocker_port->rocker; + u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS); + bool link_up; + + link_up = link_status & (1 << rocker_port->pport); + if (link_up) + netif_carrier_on(rocker_port->dev); + else + netif_carrier_off(rocker_port->dev); +} + +static void rocker_remove_ports(struct rocker *rocker) +{ + struct rocker_port *rocker_port; + int i; + + for (i = 0; i < rocker->port_count; i++) { + rocker_port = rocker->ports[i]; + if (!rocker_port) + continue; + rocker_world_port_fini(rocker_port); + unregister_netdev(rocker_port->dev); + rocker_world_port_post_fini(rocker_port); + free_netdev(rocker_port->dev); + } + rocker_world_fini(rocker); + kfree(rocker->ports); +} + +static void rocker_port_dev_addr_init(struct rocker_port *rocker_port) +{ + const struct rocker *rocker = rocker_port->rocker; + const struct pci_dev *pdev = rocker->pdev; + int err; + + err = rocker_cmd_get_port_settings_macaddr(rocker_port, + rocker_port->dev->dev_addr); + if (err) { + dev_warn(&pdev->dev, "failed to get mac address, using random\n"); + eth_hw_addr_random(rocker_port->dev); + } +} + +static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) +{ + const struct pci_dev *pdev = rocker->pdev; + struct rocker_port *rocker_port; + struct net_device *dev; + int err; + + dev = alloc_etherdev(sizeof(struct rocker_port)); + if (!dev) + return -ENOMEM; + rocker_port = netdev_priv(dev); + rocker_port->dev = dev; + rocker_port->rocker = rocker; + rocker_port->port_number = port_number; + rocker_port->pport = port_number + 1; + + err = rocker_world_check_init(rocker_port); + if (err) { + dev_err(&pdev->dev, "world init failed\n"); + goto err_world_check_init; + } + + rocker_port_dev_addr_init(rocker_port); + dev->netdev_ops = &rocker_port_netdev_ops; + dev->ethtool_ops = &rocker_port_ethtool_ops; + dev->switchdev_ops = &rocker_port_switchdev_ops; + netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, + NAPI_POLL_WEIGHT); + netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, + NAPI_POLL_WEIGHT); + rocker_carrier_init(rocker_port); + + dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG; + + err = rocker_world_port_pre_init(rocker_port); + if (err) { + dev_err(&pdev->dev, "port world pre-init failed\n"); + goto err_world_port_pre_init; + } + err = register_netdev(dev); + if (err) { + dev_err(&pdev->dev, "register_netdev failed\n"); + goto err_register_netdev; + } + rocker->ports[port_number] = rocker_port; + + err = rocker_world_port_init(rocker_port); + if (err) { + dev_err(&pdev->dev, "port world init failed\n"); + goto err_world_port_init; + } + + return 0; + +err_world_port_init: + rocker->ports[port_number] = NULL; + unregister_netdev(dev); +err_register_netdev: + rocker_world_port_post_fini(rocker_port); +err_world_port_pre_init: +err_world_check_init: + free_netdev(dev); + return err; +} + +static int rocker_probe_ports(struct rocker *rocker) +{ + int i; + size_t alloc_size; + int err; + + alloc_size = sizeof(struct rocker_port *) * rocker->port_count; + rocker->ports = kzalloc(alloc_size, GFP_KERNEL); + if (!rocker->ports) + return -ENOMEM; + for (i = 0; i < rocker->port_count; i++) { + err = rocker_probe_port(rocker, i); + if (err) + goto remove_ports; + } + return 0; + +remove_ports: + rocker_remove_ports(rocker); + return err; +} + +static int rocker_msix_init(struct rocker *rocker) +{ + struct pci_dev *pdev = rocker->pdev; + int msix_entries; + int i; + int err; + + msix_entries = pci_msix_vec_count(pdev); + if (msix_entries < 0) + return msix_entries; + + if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count)) + return -EINVAL; + + rocker->msix_entries = kmalloc_array(msix_entries, + sizeof(struct msix_entry), + GFP_KERNEL); + if (!rocker->msix_entries) + return -ENOMEM; + + for (i = 0; i < msix_entries; i++) + rocker->msix_entries[i].entry = i; + + err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries); + if (err < 0) + goto err_enable_msix; + + return 0; + +err_enable_msix: + kfree(rocker->msix_entries); + return err; +} + +static void rocker_msix_fini(const struct rocker *rocker) +{ + pci_disable_msix(rocker->pdev); + kfree(rocker->msix_entries); +} + +static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct rocker *rocker; + int err; + + rocker = kzalloc(sizeof(*rocker), GFP_KERNEL); + if (!rocker) + return -ENOMEM; + + err = pci_enable_device(pdev); + if (err) { + dev_err(&pdev->dev, "pci_enable_device failed\n"); + goto err_pci_enable_device; + } + + err = pci_request_regions(pdev, rocker_driver_name); + if (err) { + dev_err(&pdev->dev, "pci_request_regions failed\n"); + goto err_pci_request_regions; + } + + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); + if (!err) { + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); + if (err) { + dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); + goto err_pci_set_dma_mask; + } + } else { + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); + goto err_pci_set_dma_mask; + } + } + + if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) { + dev_err(&pdev->dev, "invalid PCI region size\n"); + err = -EINVAL; + goto err_pci_resource_len_check; + } + + rocker->hw_addr = ioremap(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + if (!rocker->hw_addr) { + dev_err(&pdev->dev, "ioremap failed\n"); + err = -EIO; + goto err_ioremap; + } + pci_set_master(pdev); + + rocker->pdev = pdev; + pci_set_drvdata(pdev, rocker); + + rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT); + + err = rocker_msix_init(rocker); + if (err) { + dev_err(&pdev->dev, "MSI-X init failed\n"); + goto err_msix_init; + } + + err = rocker_basic_hw_test(rocker); + if (err) { + dev_err(&pdev->dev, "basic hw test failed\n"); + goto err_basic_hw_test; + } + + rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); + + err = rocker_dma_rings_init(rocker); + if (err) + goto err_dma_rings_init; + + err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), + rocker_cmd_irq_handler, 0, + rocker_driver_name, rocker); + if (err) { + dev_err(&pdev->dev, "cannot assign cmd irq\n"); + goto err_request_cmd_irq; + } + + err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), + rocker_event_irq_handler, 0, + rocker_driver_name, rocker); + if (err) { + dev_err(&pdev->dev, "cannot assign event irq\n"); + goto err_request_event_irq; + } + + rocker->hw.id = rocker_read64(rocker, SWITCH_ID); + + err = rocker_probe_ports(rocker); + if (err) { + dev_err(&pdev->dev, "failed to probe ports\n"); + goto err_probe_ports; + } + + dev_info(&pdev->dev, "Rocker switch with id %*phN\n", + (int)sizeof(rocker->hw.id), &rocker->hw.id); + + return 0; + +err_probe_ports: + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); +err_request_event_irq: + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); +err_request_cmd_irq: + rocker_dma_rings_fini(rocker); +err_dma_rings_init: +err_basic_hw_test: + rocker_msix_fini(rocker); +err_msix_init: + iounmap(rocker->hw_addr); +err_ioremap: +err_pci_resource_len_check: +err_pci_set_dma_mask: + pci_release_regions(pdev); +err_pci_request_regions: + pci_disable_device(pdev); +err_pci_enable_device: + kfree(rocker); + return err; +} + +static void rocker_remove(struct pci_dev *pdev) +{ + struct rocker *rocker = pci_get_drvdata(pdev); + + rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET); + rocker_remove_ports(rocker); + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker); + free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker); + rocker_dma_rings_fini(rocker); + rocker_msix_fini(rocker); + iounmap(rocker->hw_addr); + pci_release_regions(rocker->pdev); + pci_disable_device(rocker->pdev); + kfree(rocker); +} + +static struct pci_driver rocker_pci_driver = { + .name = rocker_driver_name, + .id_table = rocker_pci_id_table, + .probe = rocker_probe, + .remove = rocker_remove, +}; + +/************************************ + * Net device notifier event handler + ************************************/ + +static bool rocker_port_dev_check(const struct net_device *dev) +{ + return dev->netdev_ops == &rocker_port_netdev_ops; +} + +static int rocker_netdevice_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct netdev_notifier_changeupper_info *info; + struct rocker_port *rocker_port; + int err; + + if (!rocker_port_dev_check(dev)) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_CHANGEUPPER: + info = ptr; + if (!info->master) + goto out; + rocker_port = netdev_priv(dev); + if (info->linking) { + err = rocker_world_port_master_linked(rocker_port, + info->upper_dev); + if (err) + netdev_warn(dev, "failed to reflect master linked (err %d)\n", + err); + } else { + err = rocker_world_port_master_unlinked(rocker_port, + info->upper_dev); + if (err) + netdev_warn(dev, "failed to reflect master unlinked (err %d)\n", + err); + } + } +out: + return NOTIFY_DONE; +} + +static struct notifier_block rocker_netdevice_nb __read_mostly = { + .notifier_call = rocker_netdevice_event, +}; + +/************************************ + * Net event notifier event handler + ************************************/ + +static int rocker_netevent_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct rocker_port *rocker_port; + struct net_device *dev; + struct neighbour *n = ptr; + int err; + + switch (event) { + case NETEVENT_NEIGH_UPDATE: + if (n->tbl != &arp_tbl) + return NOTIFY_DONE; + dev = n->dev; + if (!rocker_port_dev_check(dev)) + return NOTIFY_DONE; + rocker_port = netdev_priv(dev); + err = rocker_world_port_neigh_update(rocker_port, n); + if (err) + netdev_warn(dev, "failed to handle neigh update (err %d)\n", + err); + break; + } + + return NOTIFY_DONE; +} + +static struct notifier_block rocker_netevent_nb __read_mostly = { + .notifier_call = rocker_netevent_event, +}; + +/*********************** + * Module init and exit + ***********************/ + +static int __init rocker_module_init(void) +{ + int err; + + register_netdevice_notifier(&rocker_netdevice_nb); + register_netevent_notifier(&rocker_netevent_nb); + err = pci_register_driver(&rocker_pci_driver); + if (err) + goto err_pci_register_driver; + return 0; + +err_pci_register_driver: + unregister_netevent_notifier(&rocker_netevent_nb); + unregister_netdevice_notifier(&rocker_netdevice_nb); + return err; +} + +static void __exit rocker_module_exit(void) +{ + unregister_netevent_notifier(&rocker_netevent_nb); + unregister_netdevice_notifier(&rocker_netdevice_nb); + pci_unregister_driver(&rocker_pci_driver); +} + +module_init(rocker_module_init); +module_exit(rocker_module_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); +MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>"); +MODULE_DESCRIPTION("Rocker switch device driver"); +MODULE_DEVICE_TABLE(pci, rocker_pci_id_table); diff --git a/drivers/net/ethernet/rocker/rocker_ofdpa.c b/drivers/net/ethernet/rocker/rocker_ofdpa.c new file mode 100644 index 000000000..0e758bcb2 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_ofdpa.c @@ -0,0 +1,2958 @@ +/* + * drivers/net/ethernet/rocker/rocker_ofdpa.c - Rocker switch OF-DPA-like + * implementation + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/hashtable.h> +#include <linux/crc32.h> +#include <linux/netdevice.h> +#include <linux/inetdevice.h> +#include <linux/if_vlan.h> +#include <linux/if_bridge.h> +#include <net/neighbour.h> +#include <net/switchdev.h> +#include <net/ip_fib.h> +#include <net/arp.h> + +#include "rocker.h" +#include "rocker_tlv.h" + +struct ofdpa_flow_tbl_key { + u32 priority; + enum rocker_of_dpa_table_id tbl_id; + union { + struct { + u32 in_pport; + u32 in_pport_mask; + enum rocker_of_dpa_table_id goto_tbl; + } ig_port; + struct { + u32 in_pport; + __be16 vlan_id; + __be16 vlan_id_mask; + enum rocker_of_dpa_table_id goto_tbl; + bool untagged; + __be16 new_vlan_id; + } vlan; + struct { + u32 in_pport; + u32 in_pport_mask; + __be16 eth_type; + u8 eth_dst[ETH_ALEN]; + u8 eth_dst_mask[ETH_ALEN]; + __be16 vlan_id; + __be16 vlan_id_mask; + enum rocker_of_dpa_table_id goto_tbl; + bool copy_to_cpu; + } term_mac; + struct { + __be16 eth_type; + __be32 dst4; + __be32 dst4_mask; + enum rocker_of_dpa_table_id goto_tbl; + u32 group_id; + } ucast_routing; + struct { + u8 eth_dst[ETH_ALEN]; + u8 eth_dst_mask[ETH_ALEN]; + int has_eth_dst; + int has_eth_dst_mask; + __be16 vlan_id; + u32 tunnel_id; + enum rocker_of_dpa_table_id goto_tbl; + u32 group_id; + bool copy_to_cpu; + } bridge; + struct { + u32 in_pport; + u32 in_pport_mask; + u8 eth_src[ETH_ALEN]; + u8 eth_src_mask[ETH_ALEN]; + u8 eth_dst[ETH_ALEN]; + u8 eth_dst_mask[ETH_ALEN]; + __be16 eth_type; + __be16 vlan_id; + __be16 vlan_id_mask; + u8 ip_proto; + u8 ip_proto_mask; + u8 ip_tos; + u8 ip_tos_mask; + u32 group_id; + } acl; + }; +}; + +struct ofdpa_flow_tbl_entry { + struct hlist_node entry; + u32 cmd; + u64 cookie; + struct ofdpa_flow_tbl_key key; + size_t key_len; + u32 key_crc32; /* key */ +}; + +struct ofdpa_group_tbl_entry { + struct hlist_node entry; + u32 cmd; + u32 group_id; /* key */ + u16 group_count; + u32 *group_ids; + union { + struct { + u8 pop_vlan; + } l2_interface; + struct { + u8 eth_src[ETH_ALEN]; + u8 eth_dst[ETH_ALEN]; + __be16 vlan_id; + u32 group_id; + } l2_rewrite; + struct { + u8 eth_src[ETH_ALEN]; + u8 eth_dst[ETH_ALEN]; + __be16 vlan_id; + bool ttl_check; + u32 group_id; + } l3_unicast; + }; +}; + +struct ofdpa_fdb_tbl_entry { + struct hlist_node entry; + u32 key_crc32; /* key */ + bool learned; + unsigned long touched; + struct ofdpa_fdb_tbl_key { + struct ofdpa_port *ofdpa_port; + u8 addr[ETH_ALEN]; + __be16 vlan_id; + } key; +}; + +struct ofdpa_internal_vlan_tbl_entry { + struct hlist_node entry; + int ifindex; /* key */ + u32 ref_count; + __be16 vlan_id; +}; + +struct ofdpa_neigh_tbl_entry { + struct hlist_node entry; + __be32 ip_addr; /* key */ + struct net_device *dev; + u32 ref_count; + u32 index; + u8 eth_dst[ETH_ALEN]; + bool ttl_check; +}; + +enum { + OFDPA_CTRL_LINK_LOCAL_MCAST, + OFDPA_CTRL_LOCAL_ARP, + OFDPA_CTRL_IPV4_MCAST, + OFDPA_CTRL_IPV6_MCAST, + OFDPA_CTRL_DFLT_BRIDGING, + OFDPA_CTRL_DFLT_OVS, + OFDPA_CTRL_MAX, +}; + +#define OFDPA_INTERNAL_VLAN_ID_BASE 0x0f00 +#define OFDPA_N_INTERNAL_VLANS 255 +#define OFDPA_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) +#define OFDPA_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(OFDPA_N_INTERNAL_VLANS) +#define OFDPA_UNTAGGED_VID 0 + +struct ofdpa { + struct rocker *rocker; + DECLARE_HASHTABLE(flow_tbl, 16); + spinlock_t flow_tbl_lock; /* for flow tbl accesses */ + u64 flow_tbl_next_cookie; + DECLARE_HASHTABLE(group_tbl, 16); + spinlock_t group_tbl_lock; /* for group tbl accesses */ + struct timer_list fdb_cleanup_timer; + DECLARE_HASHTABLE(fdb_tbl, 16); + spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */ + unsigned long internal_vlan_bitmap[OFDPA_INTERNAL_VLAN_BITMAP_LEN]; + DECLARE_HASHTABLE(internal_vlan_tbl, 8); + spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */ + DECLARE_HASHTABLE(neigh_tbl, 16); + spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */ + u32 neigh_tbl_next_index; + unsigned long ageing_time; +}; + +struct ofdpa_port { + struct ofdpa *ofdpa; + struct rocker_port *rocker_port; + struct net_device *dev; + u32 pport; + struct net_device *bridge_dev; + __be16 internal_vlan_id; + int stp_state; + u32 brport_flags; + unsigned long ageing_time; + bool ctrls[OFDPA_CTRL_MAX]; + unsigned long vlan_bitmap[OFDPA_VLAN_BITMAP_LEN]; +}; + +static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; +static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; +static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; +static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 }; +static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; +static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 }; +static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 }; +static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 }; +static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }; + +/* Rocker priority levels for flow table entries. Higher + * priority match takes precedence over lower priority match. + */ + +enum { + OFDPA_PRIORITY_UNKNOWN = 0, + OFDPA_PRIORITY_IG_PORT = 1, + OFDPA_PRIORITY_VLAN = 1, + OFDPA_PRIORITY_TERM_MAC_UCAST = 0, + OFDPA_PRIORITY_TERM_MAC_MCAST = 1, + OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1, + OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2, + OFDPA_PRIORITY_BRIDGING_VLAN = 3, + OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1, + OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2, + OFDPA_PRIORITY_BRIDGING_TENANT = 3, + OFDPA_PRIORITY_ACL_CTRL = 3, + OFDPA_PRIORITY_ACL_NORMAL = 2, + OFDPA_PRIORITY_ACL_DFLT = 1, +}; + +static bool ofdpa_vlan_id_is_internal(__be16 vlan_id) +{ + u16 start = OFDPA_INTERNAL_VLAN_ID_BASE; + u16 end = 0xffe; + u16 _vlan_id = ntohs(vlan_id); + + return (_vlan_id >= start && _vlan_id <= end); +} + +static __be16 ofdpa_port_vid_to_vlan(const struct ofdpa_port *ofdpa_port, + u16 vid, bool *pop_vlan) +{ + __be16 vlan_id; + + if (pop_vlan) + *pop_vlan = false; + vlan_id = htons(vid); + if (!vlan_id) { + vlan_id = ofdpa_port->internal_vlan_id; + if (pop_vlan) + *pop_vlan = true; + } + + return vlan_id; +} + +static u16 ofdpa_port_vlan_to_vid(const struct ofdpa_port *ofdpa_port, + __be16 vlan_id) +{ + if (ofdpa_vlan_id_is_internal(vlan_id)) + return 0; + + return ntohs(vlan_id); +} + +static bool ofdpa_port_is_slave(const struct ofdpa_port *ofdpa_port, + const char *kind) +{ + return ofdpa_port->bridge_dev && + !strcmp(ofdpa_port->bridge_dev->rtnl_link_ops->kind, kind); +} + +static bool ofdpa_port_is_bridged(const struct ofdpa_port *ofdpa_port) +{ + return ofdpa_port_is_slave(ofdpa_port, "bridge"); +} + +static bool ofdpa_port_is_ovsed(const struct ofdpa_port *ofdpa_port) +{ + return ofdpa_port_is_slave(ofdpa_port, "openvswitch"); +} + +#define OFDPA_OP_FLAG_REMOVE BIT(0) +#define OFDPA_OP_FLAG_NOWAIT BIT(1) +#define OFDPA_OP_FLAG_LEARNED BIT(2) +#define OFDPA_OP_FLAG_REFRESH BIT(3) + +static bool ofdpa_flags_nowait(int flags) +{ + return flags & OFDPA_OP_FLAG_NOWAIT; +} + +static void *__ofdpa_mem_alloc(struct switchdev_trans *trans, int flags, + size_t size) +{ + struct switchdev_trans_item *elem = NULL; + gfp_t gfp_flags = (flags & OFDPA_OP_FLAG_NOWAIT) ? + GFP_ATOMIC : GFP_KERNEL; + + /* If in transaction prepare phase, allocate the memory + * and enqueue it on a transaction. If in transaction + * commit phase, dequeue the memory from the transaction + * rather than re-allocating the memory. The idea is the + * driver code paths for prepare and commit are identical + * so the memory allocated in the prepare phase is the + * memory used in the commit phase. + */ + + if (!trans) { + elem = kzalloc(size + sizeof(*elem), gfp_flags); + } else if (switchdev_trans_ph_prepare(trans)) { + elem = kzalloc(size + sizeof(*elem), gfp_flags); + if (!elem) + return NULL; + switchdev_trans_item_enqueue(trans, elem, kfree, elem); + } else { + elem = switchdev_trans_item_dequeue(trans); + } + + return elem ? elem + 1 : NULL; +} + +static void *ofdpa_kzalloc(struct switchdev_trans *trans, int flags, + size_t size) +{ + return __ofdpa_mem_alloc(trans, flags, size); +} + +static void *ofdpa_kcalloc(struct switchdev_trans *trans, int flags, + size_t n, size_t size) +{ + return __ofdpa_mem_alloc(trans, flags, n * size); +} + +static void ofdpa_kfree(struct switchdev_trans *trans, const void *mem) +{ + struct switchdev_trans_item *elem; + + /* Frees are ignored if in transaction prepare phase. The + * memory remains on the per-port list until freed in the + * commit phase. + */ + + if (switchdev_trans_ph_prepare(trans)) + return; + + elem = (struct switchdev_trans_item *) mem - 1; + kfree(elem); +} + +/************************************************************* + * Flow, group, FDB, internal VLAN and neigh command prepares + *************************************************************/ + +static int +ofdpa_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, + entry->key.ig_port.in_pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, + entry->key.ig_port.in_pport_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, + entry->key.ig_port.goto_tbl)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, + entry->key.vlan.in_pport)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.vlan.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, + entry->key.vlan.vlan_id_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, + entry->key.vlan.goto_tbl)) + return -EMSGSIZE; + if (entry->key.vlan.untagged && + rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID, + entry->key.vlan.new_vlan_id)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, + entry->key.term_mac.in_pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, + entry->key.term_mac.in_pport_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, + entry->key.term_mac.eth_type)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, + ETH_ALEN, entry->key.term_mac.eth_dst)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, + ETH_ALEN, entry->key.term_mac.eth_dst_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.term_mac.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, + entry->key.term_mac.vlan_id_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, + entry->key.term_mac.goto_tbl)) + return -EMSGSIZE; + if (entry->key.term_mac.copy_to_cpu && + rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, + entry->key.term_mac.copy_to_cpu)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, + entry->key.ucast_routing.eth_type)) + return -EMSGSIZE; + if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP, + entry->key.ucast_routing.dst4)) + return -EMSGSIZE; + if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK, + entry->key.ucast_routing.dst4_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, + entry->key.ucast_routing.goto_tbl)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, + entry->key.ucast_routing.group_id)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (entry->key.bridge.has_eth_dst && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, + ETH_ALEN, entry->key.bridge.eth_dst)) + return -EMSGSIZE; + if (entry->key.bridge.has_eth_dst_mask && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, + ETH_ALEN, entry->key.bridge.eth_dst_mask)) + return -EMSGSIZE; + if (entry->key.bridge.vlan_id && + rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.bridge.vlan_id)) + return -EMSGSIZE; + if (entry->key.bridge.tunnel_id && + rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID, + entry->key.bridge.tunnel_id)) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID, + entry->key.bridge.goto_tbl)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, + entry->key.bridge.group_id)) + return -EMSGSIZE; + if (entry->key.bridge.copy_to_cpu && + rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION, + entry->key.bridge.copy_to_cpu)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info, + const struct ofdpa_flow_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT, + entry->key.acl.in_pport)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK, + entry->key.acl.in_pport_mask)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, + ETH_ALEN, entry->key.acl.eth_src)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK, + ETH_ALEN, entry->key.acl.eth_src_mask)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, + ETH_ALEN, entry->key.acl.eth_dst)) + return -EMSGSIZE; + if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK, + ETH_ALEN, entry->key.acl.eth_dst_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE, + entry->key.acl.eth_type)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->key.acl.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK, + entry->key.acl.vlan_id_mask)) + return -EMSGSIZE; + + switch (ntohs(entry->key.acl.eth_type)) { + case ETH_P_IP: + case ETH_P_IPV6: + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO, + entry->key.acl.ip_proto)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, + ROCKER_TLV_OF_DPA_IP_PROTO_MASK, + entry->key.acl.ip_proto_mask)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP, + entry->key.acl.ip_tos & 0x3f)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, + ROCKER_TLV_OF_DPA_IP_DSCP_MASK, + entry->key.acl.ip_tos_mask & 0x3f)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN, + (entry->key.acl.ip_tos & 0xc0) >> 6)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, + ROCKER_TLV_OF_DPA_IP_ECN_MASK, + (entry->key.acl.ip_tos_mask & 0xc0) >> 6)) + return -EMSGSIZE; + break; + } + + if (entry->key.acl.group_id != ROCKER_GROUP_NONE && + rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, + entry->key.acl.group_id)) + return -EMSGSIZE; + + return 0; +} + +static int ofdpa_cmd_flow_tbl_add(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + const struct ofdpa_flow_tbl_entry *entry = priv; + struct rocker_tlv *cmd_info; + int err = 0; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID, + entry->key.tbl_id)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY, + entry->key.priority)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0)) + return -EMSGSIZE; + if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, + entry->cookie)) + return -EMSGSIZE; + + switch (entry->key.tbl_id) { + case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT: + err = ofdpa_cmd_flow_tbl_add_ig_port(desc_info, entry); + break; + case ROCKER_OF_DPA_TABLE_ID_VLAN: + err = ofdpa_cmd_flow_tbl_add_vlan(desc_info, entry); + break; + case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC: + err = ofdpa_cmd_flow_tbl_add_term_mac(desc_info, entry); + break; + case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING: + err = ofdpa_cmd_flow_tbl_add_ucast_routing(desc_info, entry); + break; + case ROCKER_OF_DPA_TABLE_ID_BRIDGING: + err = ofdpa_cmd_flow_tbl_add_bridge(desc_info, entry); + break; + case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY: + err = ofdpa_cmd_flow_tbl_add_acl(desc_info, entry); + break; + default: + err = -ENOTSUPP; + break; + } + + if (err) + return err; + + rocker_tlv_nest_end(desc_info, cmd_info); + + return 0; +} + +static int ofdpa_cmd_flow_tbl_del(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + const struct ofdpa_flow_tbl_entry *entry = priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE, + entry->cookie)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + + return 0; +} + +static int +ofdpa_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info, + struct ofdpa_group_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT, + ROCKER_GROUP_PORT_GET(entry->group_id))) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN, + entry->l2_interface.pop_vlan)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info, + const struct ofdpa_group_tbl_entry *entry) +{ + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, + entry->l2_rewrite.group_id)) + return -EMSGSIZE; + if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, + ETH_ALEN, entry->l2_rewrite.eth_src)) + return -EMSGSIZE; + if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, + ETH_ALEN, entry->l2_rewrite.eth_dst)) + return -EMSGSIZE; + if (entry->l2_rewrite.vlan_id && + rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->l2_rewrite.vlan_id)) + return -EMSGSIZE; + + return 0; +} + +static int +ofdpa_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info, + const struct ofdpa_group_tbl_entry *entry) +{ + int i; + struct rocker_tlv *group_ids; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT, + entry->group_count)) + return -EMSGSIZE; + + group_ids = rocker_tlv_nest_start(desc_info, + ROCKER_TLV_OF_DPA_GROUP_IDS); + if (!group_ids) + return -EMSGSIZE; + + for (i = 0; i < entry->group_count; i++) + /* Note TLV array is 1-based */ + if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i])) + return -EMSGSIZE; + + rocker_tlv_nest_end(desc_info, group_ids); + + return 0; +} + +static int +ofdpa_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info, + const struct ofdpa_group_tbl_entry *entry) +{ + if (!is_zero_ether_addr(entry->l3_unicast.eth_src) && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC, + ETH_ALEN, entry->l3_unicast.eth_src)) + return -EMSGSIZE; + if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) && + rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC, + ETH_ALEN, entry->l3_unicast.eth_dst)) + return -EMSGSIZE; + if (entry->l3_unicast.vlan_id && + rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID, + entry->l3_unicast.vlan_id)) + return -EMSGSIZE; + if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK, + entry->l3_unicast.ttl_check)) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER, + entry->l3_unicast.group_id)) + return -EMSGSIZE; + + return 0; +} + +static int ofdpa_cmd_group_tbl_add(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + struct ofdpa_group_tbl_entry *entry = priv; + struct rocker_tlv *cmd_info; + int err = 0; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, + entry->group_id)) + return -EMSGSIZE; + + switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { + case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE: + err = ofdpa_cmd_group_tbl_add_l2_interface(desc_info, entry); + break; + case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE: + err = ofdpa_cmd_group_tbl_add_l2_rewrite(desc_info, entry); + break; + case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: + case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: + err = ofdpa_cmd_group_tbl_add_group_ids(desc_info, entry); + break; + case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST: + err = ofdpa_cmd_group_tbl_add_l3_unicast(desc_info, entry); + break; + default: + err = -ENOTSUPP; + break; + } + + if (err) + return err; + + rocker_tlv_nest_end(desc_info, cmd_info); + + return 0; +} + +static int ofdpa_cmd_group_tbl_del(const struct rocker_port *rocker_port, + struct rocker_desc_info *desc_info, + void *priv) +{ + const struct ofdpa_group_tbl_entry *entry = priv; + struct rocker_tlv *cmd_info; + + if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd)) + return -EMSGSIZE; + cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO); + if (!cmd_info) + return -EMSGSIZE; + if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID, + entry->group_id)) + return -EMSGSIZE; + rocker_tlv_nest_end(desc_info, cmd_info); + + return 0; +} + +/*************************************************** + * Flow, group, FDB, internal VLAN and neigh tables + ***************************************************/ + +static struct ofdpa_flow_tbl_entry * +ofdpa_flow_tbl_find(const struct ofdpa *ofdpa, + const struct ofdpa_flow_tbl_entry *match) +{ + struct ofdpa_flow_tbl_entry *found; + size_t key_len = match->key_len ? match->key_len : sizeof(found->key); + + hash_for_each_possible(ofdpa->flow_tbl, found, + entry, match->key_crc32) { + if (memcmp(&found->key, &match->key, key_len) == 0) + return found; + } + + return NULL; +} + +static int ofdpa_flow_tbl_add(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_flow_tbl_entry *match) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_flow_tbl_entry *found; + size_t key_len = match->key_len ? match->key_len : sizeof(found->key); + unsigned long lock_flags; + + match->key_crc32 = crc32(~0, &match->key, key_len); + + spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags); + + found = ofdpa_flow_tbl_find(ofdpa, match); + + if (found) { + match->cookie = found->cookie; + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + ofdpa_kfree(trans, found); + found = match; + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD; + } else { + found = match; + found->cookie = ofdpa->flow_tbl_next_cookie++; + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD; + } + + if (!switchdev_trans_ph_prepare(trans)) + hash_add(ofdpa->flow_tbl, &found->entry, found->key_crc32); + + spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags); + + if (!switchdev_trans_ph_prepare(trans)) + return rocker_cmd_exec(ofdpa_port->rocker_port, + ofdpa_flags_nowait(flags), + ofdpa_cmd_flow_tbl_add, + found, NULL, NULL); + return 0; +} + +static int ofdpa_flow_tbl_del(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_flow_tbl_entry *match) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_flow_tbl_entry *found; + size_t key_len = match->key_len ? match->key_len : sizeof(found->key); + unsigned long lock_flags; + int err = 0; + + match->key_crc32 = crc32(~0, &match->key, key_len); + + spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags); + + found = ofdpa_flow_tbl_find(ofdpa, match); + + if (found) { + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL; + } + + spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags); + + ofdpa_kfree(trans, match); + + if (found) { + if (!switchdev_trans_ph_prepare(trans)) + err = rocker_cmd_exec(ofdpa_port->rocker_port, + ofdpa_flags_nowait(flags), + ofdpa_cmd_flow_tbl_del, + found, NULL, NULL); + ofdpa_kfree(trans, found); + } + + return err; +} + +static int ofdpa_flow_tbl_do(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_flow_tbl_entry *entry) +{ + if (flags & OFDPA_OP_FLAG_REMOVE) + return ofdpa_flow_tbl_del(ofdpa_port, trans, flags, entry); + else + return ofdpa_flow_tbl_add(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_ig_port(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + u32 in_pport, u32 in_pport_mask, + enum rocker_of_dpa_table_id goto_tbl) +{ + struct ofdpa_flow_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->key.priority = OFDPA_PRIORITY_IG_PORT; + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT; + entry->key.ig_port.in_pport = in_pport; + entry->key.ig_port.in_pport_mask = in_pport_mask; + entry->key.ig_port.goto_tbl = goto_tbl; + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_vlan(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + u32 in_pport, __be16 vlan_id, + __be16 vlan_id_mask, + enum rocker_of_dpa_table_id goto_tbl, + bool untagged, __be16 new_vlan_id) +{ + struct ofdpa_flow_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->key.priority = OFDPA_PRIORITY_VLAN; + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN; + entry->key.vlan.in_pport = in_pport; + entry->key.vlan.vlan_id = vlan_id; + entry->key.vlan.vlan_id_mask = vlan_id_mask; + entry->key.vlan.goto_tbl = goto_tbl; + + entry->key.vlan.untagged = untagged; + entry->key.vlan.new_vlan_id = new_vlan_id; + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_term_mac(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + u32 in_pport, u32 in_pport_mask, + __be16 eth_type, const u8 *eth_dst, + const u8 *eth_dst_mask, __be16 vlan_id, + __be16 vlan_id_mask, bool copy_to_cpu, + int flags) +{ + struct ofdpa_flow_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + if (is_multicast_ether_addr(eth_dst)) { + entry->key.priority = OFDPA_PRIORITY_TERM_MAC_MCAST; + entry->key.term_mac.goto_tbl = + ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING; + } else { + entry->key.priority = OFDPA_PRIORITY_TERM_MAC_UCAST; + entry->key.term_mac.goto_tbl = + ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; + } + + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; + entry->key.term_mac.in_pport = in_pport; + entry->key.term_mac.in_pport_mask = in_pport_mask; + entry->key.term_mac.eth_type = eth_type; + ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst); + ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask); + entry->key.term_mac.vlan_id = vlan_id; + entry->key.term_mac.vlan_id_mask = vlan_id_mask; + entry->key.term_mac.copy_to_cpu = copy_to_cpu; + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_bridge(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const u8 *eth_dst, const u8 *eth_dst_mask, + __be16 vlan_id, u32 tunnel_id, + enum rocker_of_dpa_table_id goto_tbl, + u32 group_id, bool copy_to_cpu) +{ + struct ofdpa_flow_tbl_entry *entry; + u32 priority; + bool vlan_bridging = !!vlan_id; + bool dflt = !eth_dst || (eth_dst && eth_dst_mask); + bool wild = false; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING; + + if (eth_dst) { + entry->key.bridge.has_eth_dst = 1; + ether_addr_copy(entry->key.bridge.eth_dst, eth_dst); + } + if (eth_dst_mask) { + entry->key.bridge.has_eth_dst_mask = 1; + ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask); + if (!ether_addr_equal(eth_dst_mask, ff_mac)) + wild = true; + } + + priority = OFDPA_PRIORITY_UNKNOWN; + if (vlan_bridging && dflt && wild) + priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD; + else if (vlan_bridging && dflt && !wild) + priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT; + else if (vlan_bridging && !dflt) + priority = OFDPA_PRIORITY_BRIDGING_VLAN; + else if (!vlan_bridging && dflt && wild) + priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD; + else if (!vlan_bridging && dflt && !wild) + priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT; + else if (!vlan_bridging && !dflt) + priority = OFDPA_PRIORITY_BRIDGING_TENANT; + + entry->key.priority = priority; + entry->key.bridge.vlan_id = vlan_id; + entry->key.bridge.tunnel_id = tunnel_id; + entry->key.bridge.goto_tbl = goto_tbl; + entry->key.bridge.group_id = group_id; + entry->key.bridge.copy_to_cpu = copy_to_cpu; + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_ucast4_routing(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + __be16 eth_type, __be32 dst, + __be32 dst_mask, u32 priority, + enum rocker_of_dpa_table_id goto_tbl, + u32 group_id, int flags) +{ + struct ofdpa_flow_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING; + entry->key.priority = priority; + entry->key.ucast_routing.eth_type = eth_type; + entry->key.ucast_routing.dst4 = dst; + entry->key.ucast_routing.dst4_mask = dst_mask; + entry->key.ucast_routing.goto_tbl = goto_tbl; + entry->key.ucast_routing.group_id = group_id; + entry->key_len = offsetof(struct ofdpa_flow_tbl_key, + ucast_routing.group_id); + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_flow_tbl_acl(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + u32 in_pport, u32 in_pport_mask, + const u8 *eth_src, const u8 *eth_src_mask, + const u8 *eth_dst, const u8 *eth_dst_mask, + __be16 eth_type, __be16 vlan_id, + __be16 vlan_id_mask, u8 ip_proto, + u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask, + u32 group_id) +{ + u32 priority; + struct ofdpa_flow_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + priority = OFDPA_PRIORITY_ACL_NORMAL; + if (eth_dst && eth_dst_mask) { + if (ether_addr_equal(eth_dst_mask, mcast_mac)) + priority = OFDPA_PRIORITY_ACL_DFLT; + else if (is_link_local_ether_addr(eth_dst)) + priority = OFDPA_PRIORITY_ACL_CTRL; + } + + entry->key.priority = priority; + entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + entry->key.acl.in_pport = in_pport; + entry->key.acl.in_pport_mask = in_pport_mask; + + if (eth_src) + ether_addr_copy(entry->key.acl.eth_src, eth_src); + if (eth_src_mask) + ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask); + if (eth_dst) + ether_addr_copy(entry->key.acl.eth_dst, eth_dst); + if (eth_dst_mask) + ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask); + + entry->key.acl.eth_type = eth_type; + entry->key.acl.vlan_id = vlan_id; + entry->key.acl.vlan_id_mask = vlan_id_mask; + entry->key.acl.ip_proto = ip_proto; + entry->key.acl.ip_proto_mask = ip_proto_mask; + entry->key.acl.ip_tos = ip_tos; + entry->key.acl.ip_tos_mask = ip_tos_mask; + entry->key.acl.group_id = group_id; + + return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry); +} + +static struct ofdpa_group_tbl_entry * +ofdpa_group_tbl_find(const struct ofdpa *ofdpa, + const struct ofdpa_group_tbl_entry *match) +{ + struct ofdpa_group_tbl_entry *found; + + hash_for_each_possible(ofdpa->group_tbl, found, + entry, match->group_id) { + if (found->group_id == match->group_id) + return found; + } + + return NULL; +} + +static void ofdpa_group_tbl_entry_free(struct switchdev_trans *trans, + struct ofdpa_group_tbl_entry *entry) +{ + switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) { + case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD: + case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST: + ofdpa_kfree(trans, entry->group_ids); + break; + default: + break; + } + ofdpa_kfree(trans, entry); +} + +static int ofdpa_group_tbl_add(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_group_tbl_entry *match) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_group_tbl_entry *found; + unsigned long lock_flags; + + spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags); + + found = ofdpa_group_tbl_find(ofdpa, match); + + if (found) { + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + ofdpa_group_tbl_entry_free(trans, found); + found = match; + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD; + } else { + found = match; + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD; + } + + if (!switchdev_trans_ph_prepare(trans)) + hash_add(ofdpa->group_tbl, &found->entry, found->group_id); + + spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags); + + if (!switchdev_trans_ph_prepare(trans)) + return rocker_cmd_exec(ofdpa_port->rocker_port, + ofdpa_flags_nowait(flags), + ofdpa_cmd_group_tbl_add, + found, NULL, NULL); + return 0; +} + +static int ofdpa_group_tbl_del(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_group_tbl_entry *match) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_group_tbl_entry *found; + unsigned long lock_flags; + int err = 0; + + spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags); + + found = ofdpa_group_tbl_find(ofdpa, match); + + if (found) { + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL; + } + + spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags); + + ofdpa_group_tbl_entry_free(trans, match); + + if (found) { + if (!switchdev_trans_ph_prepare(trans)) + err = rocker_cmd_exec(ofdpa_port->rocker_port, + ofdpa_flags_nowait(flags), + ofdpa_cmd_group_tbl_del, + found, NULL, NULL); + ofdpa_group_tbl_entry_free(trans, found); + } + + return err; +} + +static int ofdpa_group_tbl_do(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + struct ofdpa_group_tbl_entry *entry) +{ + if (flags & OFDPA_OP_FLAG_REMOVE) + return ofdpa_group_tbl_del(ofdpa_port, trans, flags, entry); + else + return ofdpa_group_tbl_add(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_group_l2_interface(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be16 vlan_id, u32 out_pport, + int pop_vlan) +{ + struct ofdpa_group_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); + entry->l2_interface.pop_vlan = pop_vlan; + + return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_group_l2_fan_out(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + int flags, u8 group_count, + const u32 *group_ids, u32 group_id) +{ + struct ofdpa_group_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->group_id = group_id; + entry->group_count = group_count; + + entry->group_ids = ofdpa_kcalloc(trans, flags, + group_count, sizeof(u32)); + if (!entry->group_ids) { + ofdpa_kfree(trans, entry); + return -ENOMEM; + } + memcpy(entry->group_ids, group_ids, group_count * sizeof(u32)); + + return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry); +} + +static int ofdpa_group_l2_flood(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be16 vlan_id, u8 group_count, + const u32 *group_ids, u32 group_id) +{ + return ofdpa_group_l2_fan_out(ofdpa_port, trans, flags, + group_count, group_ids, + group_id); +} + +static int ofdpa_group_l3_unicast(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + u32 index, const u8 *src_mac, const u8 *dst_mac, + __be16 vlan_id, bool ttl_check, u32 pport) +{ + struct ofdpa_group_tbl_entry *entry; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + entry->group_id = ROCKER_GROUP_L3_UNICAST(index); + if (src_mac) + ether_addr_copy(entry->l3_unicast.eth_src, src_mac); + if (dst_mac) + ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac); + entry->l3_unicast.vlan_id = vlan_id; + entry->l3_unicast.ttl_check = ttl_check; + entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport); + + return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry); +} + +static struct ofdpa_neigh_tbl_entry * +ofdpa_neigh_tbl_find(const struct ofdpa *ofdpa, __be32 ip_addr) +{ + struct ofdpa_neigh_tbl_entry *found; + + hash_for_each_possible(ofdpa->neigh_tbl, found, + entry, be32_to_cpu(ip_addr)) + if (found->ip_addr == ip_addr) + return found; + + return NULL; +} + +static void ofdpa_neigh_add(struct ofdpa *ofdpa, + struct switchdev_trans *trans, + struct ofdpa_neigh_tbl_entry *entry) +{ + if (!switchdev_trans_ph_commit(trans)) + entry->index = ofdpa->neigh_tbl_next_index++; + if (switchdev_trans_ph_prepare(trans)) + return; + entry->ref_count++; + hash_add(ofdpa->neigh_tbl, &entry->entry, + be32_to_cpu(entry->ip_addr)); +} + +static void ofdpa_neigh_del(struct switchdev_trans *trans, + struct ofdpa_neigh_tbl_entry *entry) +{ + if (switchdev_trans_ph_prepare(trans)) + return; + if (--entry->ref_count == 0) { + hash_del(&entry->entry); + ofdpa_kfree(trans, entry); + } +} + +static void ofdpa_neigh_update(struct ofdpa_neigh_tbl_entry *entry, + struct switchdev_trans *trans, + const u8 *eth_dst, bool ttl_check) +{ + if (eth_dst) { + ether_addr_copy(entry->eth_dst, eth_dst); + entry->ttl_check = ttl_check; + } else if (!switchdev_trans_ph_prepare(trans)) { + entry->ref_count++; + } +} + +static int ofdpa_port_ipv4_neigh(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + int flags, __be32 ip_addr, const u8 *eth_dst) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_neigh_tbl_entry *entry; + struct ofdpa_neigh_tbl_entry *found; + unsigned long lock_flags; + __be16 eth_type = htons(ETH_P_IP); + enum rocker_of_dpa_table_id goto_tbl = + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + u32 group_id; + u32 priority = 0; + bool adding = !(flags & OFDPA_OP_FLAG_REMOVE); + bool updating; + bool removing; + int err = 0; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags); + + found = ofdpa_neigh_tbl_find(ofdpa, ip_addr); + + updating = found && adding; + removing = found && !adding; + adding = !found && adding; + + if (adding) { + entry->ip_addr = ip_addr; + entry->dev = ofdpa_port->dev; + ether_addr_copy(entry->eth_dst, eth_dst); + entry->ttl_check = true; + ofdpa_neigh_add(ofdpa, trans, entry); + } else if (removing) { + memcpy(entry, found, sizeof(*entry)); + ofdpa_neigh_del(trans, found); + } else if (updating) { + ofdpa_neigh_update(found, trans, eth_dst, true); + memcpy(entry, found, sizeof(*entry)); + } else { + err = -ENOENT; + } + + spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags); + + if (err) + goto err_out; + + /* For each active neighbor, we have an L3 unicast group and + * a /32 route to the neighbor, which uses the L3 unicast + * group. The L3 unicast group can also be referred to by + * other routes' nexthops. + */ + + err = ofdpa_group_l3_unicast(ofdpa_port, trans, flags, + entry->index, + ofdpa_port->dev->dev_addr, + entry->eth_dst, + ofdpa_port->internal_vlan_id, + entry->ttl_check, + ofdpa_port->pport); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) L3 unicast group index %d\n", + err, entry->index); + goto err_out; + } + + if (adding || removing) { + group_id = ROCKER_GROUP_L3_UNICAST(entry->index); + err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, trans, + eth_type, ip_addr, + inet_make_mask(32), + priority, goto_tbl, + group_id, flags); + + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) /32 unicast route %pI4 group 0x%08x\n", + err, &entry->ip_addr, group_id); + } + +err_out: + if (!adding) + ofdpa_kfree(trans, entry); + + return err; +} + +static int ofdpa_port_ipv4_resolve(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + __be32 ip_addr) +{ + struct net_device *dev = ofdpa_port->dev; + struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr); + int err = 0; + + if (!n) { + n = neigh_create(&arp_tbl, &ip_addr, dev); + if (IS_ERR(n)) + return PTR_ERR(n); + } + + /* If the neigh is already resolved, then go ahead and + * install the entry, otherwise start the ARP process to + * resolve the neigh. + */ + + if (n->nud_state & NUD_VALID) + err = ofdpa_port_ipv4_neigh(ofdpa_port, trans, 0, + ip_addr, n->ha); + else + neigh_event_send(n, NULL); + + neigh_release(n); + return err; +} + +static int ofdpa_port_ipv4_nh(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be32 ip_addr, u32 *index) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_neigh_tbl_entry *entry; + struct ofdpa_neigh_tbl_entry *found; + unsigned long lock_flags; + bool adding = !(flags & OFDPA_OP_FLAG_REMOVE); + bool updating; + bool removing; + bool resolved = true; + int err = 0; + + entry = ofdpa_kzalloc(trans, flags, sizeof(*entry)); + if (!entry) + return -ENOMEM; + + spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags); + + found = ofdpa_neigh_tbl_find(ofdpa, ip_addr); + if (found) + *index = found->index; + + updating = found && adding; + removing = found && !adding; + adding = !found && adding; + + if (adding) { + entry->ip_addr = ip_addr; + entry->dev = ofdpa_port->dev; + ofdpa_neigh_add(ofdpa, trans, entry); + *index = entry->index; + resolved = false; + } else if (removing) { + ofdpa_neigh_del(trans, found); + } else if (updating) { + ofdpa_neigh_update(found, trans, NULL, false); + resolved = !is_zero_ether_addr(found->eth_dst); + } else { + err = -ENOENT; + } + + spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags); + + if (!adding) + ofdpa_kfree(trans, entry); + + if (err) + return err; + + /* Resolved means neigh ip_addr is resolved to neigh mac. */ + + if (!resolved) + err = ofdpa_port_ipv4_resolve(ofdpa_port, trans, ip_addr); + + return err; +} + +static struct ofdpa_port *ofdpa_port_get(const struct ofdpa *ofdpa, + int port_index) +{ + struct rocker_port *rocker_port; + + rocker_port = ofdpa->rocker->ports[port_index]; + return rocker_port ? rocker_port->wpriv : NULL; +} + +static int ofdpa_port_vlan_flood_group(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + int flags, __be16 vlan_id) +{ + struct ofdpa_port *p; + const struct ofdpa *ofdpa = ofdpa_port->ofdpa; + unsigned int port_count = ofdpa->rocker->port_count; + u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); + u32 *group_ids; + u8 group_count = 0; + int err = 0; + int i; + + group_ids = ofdpa_kcalloc(trans, flags, port_count, sizeof(u32)); + if (!group_ids) + return -ENOMEM; + + /* Adjust the flood group for this VLAN. The flood group + * references an L2 interface group for each port in this + * VLAN. + */ + + for (i = 0; i < port_count; i++) { + p = ofdpa_port_get(ofdpa, i); + if (!p) + continue; + if (!ofdpa_port_is_bridged(p)) + continue; + if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) { + group_ids[group_count++] = + ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport); + } + } + + /* If there are no bridged ports in this VLAN, we're done */ + if (group_count == 0) + goto no_ports_in_vlan; + + err = ofdpa_group_l2_flood(ofdpa_port, trans, flags, vlan_id, + group_count, group_ids, group_id); + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err); + +no_ports_in_vlan: + ofdpa_kfree(trans, group_ids); + return err; +} + +static int ofdpa_port_vlan_l2_groups(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be16 vlan_id, bool pop_vlan) +{ + const struct ofdpa *ofdpa = ofdpa_port->ofdpa; + unsigned int port_count = ofdpa->rocker->port_count; + struct ofdpa_port *p; + bool adding = !(flags & OFDPA_OP_FLAG_REMOVE); + u32 out_pport; + int ref = 0; + int err; + int i; + + /* An L2 interface group for this port in this VLAN, but + * only when port STP state is LEARNING|FORWARDING. + */ + + if (ofdpa_port->stp_state == BR_STATE_LEARNING || + ofdpa_port->stp_state == BR_STATE_FORWARDING) { + out_pport = ofdpa_port->pport; + err = ofdpa_group_l2_interface(ofdpa_port, trans, flags, + vlan_id, out_pport, pop_vlan); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n", + err, out_pport); + return err; + } + } + + /* An L2 interface group for this VLAN to CPU port. + * Add when first port joins this VLAN and destroy when + * last port leaves this VLAN. + */ + + for (i = 0; i < port_count; i++) { + p = ofdpa_port_get(ofdpa, i); + if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap)) + ref++; + } + + if ((!adding || ref != 1) && (adding || ref != 0)) + return 0; + + out_pport = 0; + err = ofdpa_group_l2_interface(ofdpa_port, trans, flags, + vlan_id, out_pport, pop_vlan); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for CPU port\n", err); + return err; + } + + return 0; +} + +static struct ofdpa_ctrl { + const u8 *eth_dst; + const u8 *eth_dst_mask; + __be16 eth_type; + bool acl; + bool bridge; + bool term; + bool copy_to_cpu; +} ofdpa_ctrls[] = { + [OFDPA_CTRL_LINK_LOCAL_MCAST] = { + /* pass link local multicast pkts up to CPU for filtering */ + .eth_dst = ll_mac, + .eth_dst_mask = ll_mask, + .acl = true, + }, + [OFDPA_CTRL_LOCAL_ARP] = { + /* pass local ARP pkts up to CPU */ + .eth_dst = zero_mac, + .eth_dst_mask = zero_mac, + .eth_type = htons(ETH_P_ARP), + .acl = true, + }, + [OFDPA_CTRL_IPV4_MCAST] = { + /* pass IPv4 mcast pkts up to CPU, RFC 1112 */ + .eth_dst = ipv4_mcast, + .eth_dst_mask = ipv4_mask, + .eth_type = htons(ETH_P_IP), + .term = true, + .copy_to_cpu = true, + }, + [OFDPA_CTRL_IPV6_MCAST] = { + /* pass IPv6 mcast pkts up to CPU, RFC 2464 */ + .eth_dst = ipv6_mcast, + .eth_dst_mask = ipv6_mask, + .eth_type = htons(ETH_P_IPV6), + .term = true, + .copy_to_cpu = true, + }, + [OFDPA_CTRL_DFLT_BRIDGING] = { + /* flood any pkts on vlan */ + .bridge = true, + .copy_to_cpu = true, + }, + [OFDPA_CTRL_DFLT_OVS] = { + /* pass all pkts up to CPU */ + .eth_dst = zero_mac, + .eth_dst_mask = zero_mac, + .acl = true, + }, +}; + +static int ofdpa_port_ctrl_vlan_acl(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const struct ofdpa_ctrl *ctrl, __be16 vlan_id) +{ + u32 in_pport = ofdpa_port->pport; + u32 in_pport_mask = 0xffffffff; + u32 out_pport = 0; + const u8 *eth_src = NULL; + const u8 *eth_src_mask = NULL; + __be16 vlan_id_mask = htons(0xffff); + u8 ip_proto = 0; + u8 ip_proto_mask = 0; + u8 ip_tos = 0; + u8 ip_tos_mask = 0; + u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); + int err; + + err = ofdpa_flow_tbl_acl(ofdpa_port, trans, flags, + in_pport, in_pport_mask, + eth_src, eth_src_mask, + ctrl->eth_dst, ctrl->eth_dst_mask, + ctrl->eth_type, + vlan_id, vlan_id_mask, + ip_proto, ip_proto_mask, + ip_tos, ip_tos_mask, + group_id); + + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) ctrl ACL\n", err); + + return err; +} + +static int ofdpa_port_ctrl_vlan_bridge(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + int flags, + const struct ofdpa_ctrl *ctrl, + __be16 vlan_id) +{ + enum rocker_of_dpa_table_id goto_tbl = + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0); + u32 tunnel_id = 0; + int err; + + if (!ofdpa_port_is_bridged(ofdpa_port)) + return 0; + + err = ofdpa_flow_tbl_bridge(ofdpa_port, trans, flags, + ctrl->eth_dst, ctrl->eth_dst_mask, + vlan_id, tunnel_id, + goto_tbl, group_id, ctrl->copy_to_cpu); + + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) ctrl FLOOD\n", err); + + return err; +} + +static int ofdpa_port_ctrl_vlan_term(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const struct ofdpa_ctrl *ctrl, __be16 vlan_id) +{ + u32 in_pport_mask = 0xffffffff; + __be16 vlan_id_mask = htons(0xffff); + int err; + + if (ntohs(vlan_id) == 0) + vlan_id = ofdpa_port->internal_vlan_id; + + err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans, + ofdpa_port->pport, in_pport_mask, + ctrl->eth_type, ctrl->eth_dst, + ctrl->eth_dst_mask, vlan_id, + vlan_id_mask, ctrl->copy_to_cpu, + flags); + + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) ctrl term\n", err); + + return err; +} + +static int ofdpa_port_ctrl_vlan(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const struct ofdpa_ctrl *ctrl, __be16 vlan_id) +{ + if (ctrl->acl) + return ofdpa_port_ctrl_vlan_acl(ofdpa_port, trans, flags, + ctrl, vlan_id); + if (ctrl->bridge) + return ofdpa_port_ctrl_vlan_bridge(ofdpa_port, trans, flags, + ctrl, vlan_id); + + if (ctrl->term) + return ofdpa_port_ctrl_vlan_term(ofdpa_port, trans, flags, + ctrl, vlan_id); + + return -EOPNOTSUPP; +} + +static int ofdpa_port_ctrl_vlan_add(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be16 vlan_id) +{ + int err = 0; + int i; + + for (i = 0; i < OFDPA_CTRL_MAX; i++) { + if (ofdpa_port->ctrls[i]) { + err = ofdpa_port_ctrl_vlan(ofdpa_port, trans, flags, + &ofdpa_ctrls[i], vlan_id); + if (err) + return err; + } + } + + return err; +} + +static int ofdpa_port_ctrl(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const struct ofdpa_ctrl *ctrl) +{ + u16 vid; + int err = 0; + + for (vid = 1; vid < VLAN_N_VID; vid++) { + if (!test_bit(vid, ofdpa_port->vlan_bitmap)) + continue; + err = ofdpa_port_ctrl_vlan(ofdpa_port, trans, flags, + ctrl, htons(vid)); + if (err) + break; + } + + return err; +} + +static int ofdpa_port_vlan(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, u16 vid) +{ + enum rocker_of_dpa_table_id goto_tbl = + ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC; + u32 in_pport = ofdpa_port->pport; + __be16 vlan_id = htons(vid); + __be16 vlan_id_mask = htons(0xffff); + __be16 internal_vlan_id; + bool untagged; + bool adding = !(flags & OFDPA_OP_FLAG_REMOVE); + int err; + + internal_vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, &untagged); + + if (adding && + test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap)) + return 0; /* already added */ + else if (!adding && + !test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap)) + return 0; /* already removed */ + + change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap); + + if (adding) { + err = ofdpa_port_ctrl_vlan_add(ofdpa_port, trans, flags, + internal_vlan_id); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port ctrl vlan add\n", err); + goto err_out; + } + } + + err = ofdpa_port_vlan_l2_groups(ofdpa_port, trans, flags, + internal_vlan_id, untagged); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 groups\n", err); + goto err_out; + } + + err = ofdpa_port_vlan_flood_group(ofdpa_port, trans, flags, + internal_vlan_id); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err); + goto err_out; + } + + err = ofdpa_flow_tbl_vlan(ofdpa_port, trans, flags, + in_pport, vlan_id, vlan_id_mask, + goto_tbl, untagged, internal_vlan_id); + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN table\n", err); + +err_out: + if (switchdev_trans_ph_prepare(trans)) + change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap); + + return err; +} + +static int ofdpa_port_ig_tbl(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags) +{ + enum rocker_of_dpa_table_id goto_tbl; + u32 in_pport; + u32 in_pport_mask; + int err; + + /* Normal Ethernet Frames. Matches pkts from any local physical + * ports. Goto VLAN tbl. + */ + + in_pport = 0; + in_pport_mask = 0xffff0000; + goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN; + + err = ofdpa_flow_tbl_ig_port(ofdpa_port, trans, flags, + in_pport, in_pport_mask, + goto_tbl); + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) ingress port table entry\n", err); + + return err; +} + +struct ofdpa_fdb_learn_work { + struct work_struct work; + struct ofdpa_port *ofdpa_port; + struct switchdev_trans *trans; + int flags; + u8 addr[ETH_ALEN]; + u16 vid; +}; + +static void ofdpa_port_fdb_learn_work(struct work_struct *work) +{ + const struct ofdpa_fdb_learn_work *lw = + container_of(work, struct ofdpa_fdb_learn_work, work); + bool removing = (lw->flags & OFDPA_OP_FLAG_REMOVE); + bool learned = (lw->flags & OFDPA_OP_FLAG_LEARNED); + struct switchdev_notifier_fdb_info info; + + info.addr = lw->addr; + info.vid = lw->vid; + + rtnl_lock(); + if (learned && removing) + call_switchdev_notifiers(SWITCHDEV_FDB_DEL, + lw->ofdpa_port->dev, &info.info); + else if (learned && !removing) + call_switchdev_notifiers(SWITCHDEV_FDB_ADD, + lw->ofdpa_port->dev, &info.info); + rtnl_unlock(); + + ofdpa_kfree(lw->trans, work); +} + +static int ofdpa_port_fdb_learn(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + const u8 *addr, __be16 vlan_id) +{ + struct ofdpa_fdb_learn_work *lw; + enum rocker_of_dpa_table_id goto_tbl = + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + u32 out_pport = ofdpa_port->pport; + u32 tunnel_id = 0; + u32 group_id = ROCKER_GROUP_NONE; + bool syncing = !!(ofdpa_port->brport_flags & BR_LEARNING_SYNC); + bool copy_to_cpu = false; + int err; + + if (ofdpa_port_is_bridged(ofdpa_port)) + group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport); + + if (!(flags & OFDPA_OP_FLAG_REFRESH)) { + err = ofdpa_flow_tbl_bridge(ofdpa_port, trans, flags, addr, + NULL, vlan_id, tunnel_id, goto_tbl, + group_id, copy_to_cpu); + if (err) + return err; + } + + if (!syncing) + return 0; + + if (!ofdpa_port_is_bridged(ofdpa_port)) + return 0; + + lw = ofdpa_kzalloc(trans, flags, sizeof(*lw)); + if (!lw) + return -ENOMEM; + + INIT_WORK(&lw->work, ofdpa_port_fdb_learn_work); + + lw->ofdpa_port = ofdpa_port; + lw->trans = trans; + lw->flags = flags; + ether_addr_copy(lw->addr, addr); + lw->vid = ofdpa_port_vlan_to_vid(ofdpa_port, vlan_id); + + if (switchdev_trans_ph_prepare(trans)) + ofdpa_kfree(trans, lw); + else + schedule_work(&lw->work); + + return 0; +} + +static struct ofdpa_fdb_tbl_entry * +ofdpa_fdb_tbl_find(const struct ofdpa *ofdpa, + const struct ofdpa_fdb_tbl_entry *match) +{ + struct ofdpa_fdb_tbl_entry *found; + + hash_for_each_possible(ofdpa->fdb_tbl, found, entry, match->key_crc32) + if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0) + return found; + + return NULL; +} + +static int ofdpa_port_fdb(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + const unsigned char *addr, + __be16 vlan_id, int flags) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_fdb_tbl_entry *fdb; + struct ofdpa_fdb_tbl_entry *found; + bool removing = (flags & OFDPA_OP_FLAG_REMOVE); + unsigned long lock_flags; + + fdb = ofdpa_kzalloc(trans, flags, sizeof(*fdb)); + if (!fdb) + return -ENOMEM; + + fdb->learned = (flags & OFDPA_OP_FLAG_LEARNED); + fdb->touched = jiffies; + fdb->key.ofdpa_port = ofdpa_port; + ether_addr_copy(fdb->key.addr, addr); + fdb->key.vlan_id = vlan_id; + fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key)); + + spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags); + + found = ofdpa_fdb_tbl_find(ofdpa, fdb); + + if (found) { + found->touched = jiffies; + if (removing) { + ofdpa_kfree(trans, fdb); + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + } + } else if (!removing) { + if (!switchdev_trans_ph_prepare(trans)) + hash_add(ofdpa->fdb_tbl, &fdb->entry, + fdb->key_crc32); + } + + spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags); + + /* Check if adding and already exists, or removing and can't find */ + if (!found != !removing) { + ofdpa_kfree(trans, fdb); + if (!found && removing) + return 0; + /* Refreshing existing to update aging timers */ + flags |= OFDPA_OP_FLAG_REFRESH; + } + + return ofdpa_port_fdb_learn(ofdpa_port, trans, flags, addr, vlan_id); +} + +static int ofdpa_port_fdb_flush(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_fdb_tbl_entry *found; + unsigned long lock_flags; + struct hlist_node *tmp; + int bkt; + int err = 0; + + if (ofdpa_port->stp_state == BR_STATE_LEARNING || + ofdpa_port->stp_state == BR_STATE_FORWARDING) + return 0; + + flags |= OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE; + + spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags); + + hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) { + if (found->key.ofdpa_port != ofdpa_port) + continue; + if (!found->learned) + continue; + err = ofdpa_port_fdb_learn(ofdpa_port, trans, flags, + found->key.addr, + found->key.vlan_id); + if (err) + goto err_out; + if (!switchdev_trans_ph_prepare(trans)) + hash_del(&found->entry); + } + +err_out: + spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags); + + return err; +} + +static void ofdpa_fdb_cleanup(unsigned long data) +{ + struct ofdpa *ofdpa = (struct ofdpa *)data; + struct ofdpa_port *ofdpa_port; + struct ofdpa_fdb_tbl_entry *entry; + struct hlist_node *tmp; + unsigned long next_timer = jiffies + ofdpa->ageing_time; + unsigned long expires; + unsigned long lock_flags; + int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE | + OFDPA_OP_FLAG_LEARNED; + int bkt; + + spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags); + + hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, entry, entry) { + if (!entry->learned) + continue; + ofdpa_port = entry->key.ofdpa_port; + expires = entry->touched + ofdpa_port->ageing_time; + if (time_before_eq(expires, jiffies)) { + ofdpa_port_fdb_learn(ofdpa_port, NULL, + flags, entry->key.addr, + entry->key.vlan_id); + hash_del(&entry->entry); + } else if (time_before(expires, next_timer)) { + next_timer = expires; + } + } + + spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags); + + mod_timer(&ofdpa->fdb_cleanup_timer, round_jiffies_up(next_timer)); +} + +static int ofdpa_port_router_mac(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags, + __be16 vlan_id) +{ + u32 in_pport_mask = 0xffffffff; + __be16 eth_type; + const u8 *dst_mac_mask = ff_mac; + __be16 vlan_id_mask = htons(0xffff); + bool copy_to_cpu = false; + int err; + + if (ntohs(vlan_id) == 0) + vlan_id = ofdpa_port->internal_vlan_id; + + eth_type = htons(ETH_P_IP); + err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans, + ofdpa_port->pport, in_pport_mask, + eth_type, ofdpa_port->dev->dev_addr, + dst_mac_mask, vlan_id, vlan_id_mask, + copy_to_cpu, flags); + if (err) + return err; + + eth_type = htons(ETH_P_IPV6); + err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans, + ofdpa_port->pport, in_pport_mask, + eth_type, ofdpa_port->dev->dev_addr, + dst_mac_mask, vlan_id, vlan_id_mask, + copy_to_cpu, flags); + + return err; +} + +static int ofdpa_port_fwding(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, int flags) +{ + bool pop_vlan; + u32 out_pport; + __be16 vlan_id; + u16 vid; + int err; + + /* Port will be forwarding-enabled if its STP state is LEARNING + * or FORWARDING. Traffic from CPU can still egress, regardless of + * port STP state. Use L2 interface group on port VLANs as a way + * to toggle port forwarding: if forwarding is disabled, L2 + * interface group will not exist. + */ + + if (ofdpa_port->stp_state != BR_STATE_LEARNING && + ofdpa_port->stp_state != BR_STATE_FORWARDING) + flags |= OFDPA_OP_FLAG_REMOVE; + + out_pport = ofdpa_port->pport; + for (vid = 1; vid < VLAN_N_VID; vid++) { + if (!test_bit(vid, ofdpa_port->vlan_bitmap)) + continue; + vlan_id = htons(vid); + pop_vlan = ofdpa_vlan_id_is_internal(vlan_id); + err = ofdpa_group_l2_interface(ofdpa_port, trans, flags, + vlan_id, out_pport, pop_vlan); + if (err) { + netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n", + err, out_pport); + return err; + } + } + + return 0; +} + +static int ofdpa_port_stp_update(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + int flags, u8 state) +{ + bool want[OFDPA_CTRL_MAX] = { 0, }; + bool prev_ctrls[OFDPA_CTRL_MAX]; + u8 uninitialized_var(prev_state); + int err; + int i; + + if (switchdev_trans_ph_prepare(trans)) { + memcpy(prev_ctrls, ofdpa_port->ctrls, sizeof(prev_ctrls)); + prev_state = ofdpa_port->stp_state; + } + + if (ofdpa_port->stp_state == state) + return 0; + + ofdpa_port->stp_state = state; + + switch (state) { + case BR_STATE_DISABLED: + /* port is completely disabled */ + break; + case BR_STATE_LISTENING: + case BR_STATE_BLOCKING: + want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true; + break; + case BR_STATE_LEARNING: + case BR_STATE_FORWARDING: + if (!ofdpa_port_is_ovsed(ofdpa_port)) + want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true; + want[OFDPA_CTRL_IPV4_MCAST] = true; + want[OFDPA_CTRL_IPV6_MCAST] = true; + if (ofdpa_port_is_bridged(ofdpa_port)) + want[OFDPA_CTRL_DFLT_BRIDGING] = true; + else if (ofdpa_port_is_ovsed(ofdpa_port)) + want[OFDPA_CTRL_DFLT_OVS] = true; + else + want[OFDPA_CTRL_LOCAL_ARP] = true; + break; + } + + for (i = 0; i < OFDPA_CTRL_MAX; i++) { + if (want[i] != ofdpa_port->ctrls[i]) { + int ctrl_flags = flags | + (want[i] ? 0 : OFDPA_OP_FLAG_REMOVE); + err = ofdpa_port_ctrl(ofdpa_port, trans, ctrl_flags, + &ofdpa_ctrls[i]); + if (err) + goto err_out; + ofdpa_port->ctrls[i] = want[i]; + } + } + + err = ofdpa_port_fdb_flush(ofdpa_port, trans, flags); + if (err) + goto err_out; + + err = ofdpa_port_fwding(ofdpa_port, trans, flags); + +err_out: + if (switchdev_trans_ph_prepare(trans)) { + memcpy(ofdpa_port->ctrls, prev_ctrls, sizeof(prev_ctrls)); + ofdpa_port->stp_state = prev_state; + } + + return err; +} + +static int ofdpa_port_fwd_enable(struct ofdpa_port *ofdpa_port, int flags) +{ + if (ofdpa_port_is_bridged(ofdpa_port)) + /* bridge STP will enable port */ + return 0; + + /* port is not bridged, so simulate going to FORWARDING state */ + return ofdpa_port_stp_update(ofdpa_port, NULL, flags, + BR_STATE_FORWARDING); +} + +static int ofdpa_port_fwd_disable(struct ofdpa_port *ofdpa_port, int flags) +{ + if (ofdpa_port_is_bridged(ofdpa_port)) + /* bridge STP will disable port */ + return 0; + + /* port is not bridged, so simulate going to DISABLED state */ + return ofdpa_port_stp_update(ofdpa_port, NULL, flags, + BR_STATE_DISABLED); +} + +static int ofdpa_port_vlan_add(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, + u16 vid, u16 flags) +{ + int err; + + /* XXX deal with flags for PVID and untagged */ + + err = ofdpa_port_vlan(ofdpa_port, trans, 0, vid); + if (err) + return err; + + err = ofdpa_port_router_mac(ofdpa_port, trans, 0, htons(vid)); + if (err) + ofdpa_port_vlan(ofdpa_port, trans, + OFDPA_OP_FLAG_REMOVE, vid); + + return err; +} + +static int ofdpa_port_vlan_del(struct ofdpa_port *ofdpa_port, + u16 vid, u16 flags) +{ + int err; + + err = ofdpa_port_router_mac(ofdpa_port, NULL, + OFDPA_OP_FLAG_REMOVE, htons(vid)); + if (err) + return err; + + return ofdpa_port_vlan(ofdpa_port, NULL, + OFDPA_OP_FLAG_REMOVE, vid); +} + +static struct ofdpa_internal_vlan_tbl_entry * +ofdpa_internal_vlan_tbl_find(const struct ofdpa *ofdpa, int ifindex) +{ + struct ofdpa_internal_vlan_tbl_entry *found; + + hash_for_each_possible(ofdpa->internal_vlan_tbl, found, + entry, ifindex) { + if (found->ifindex == ifindex) + return found; + } + + return NULL; +} + +static __be16 ofdpa_port_internal_vlan_id_get(struct ofdpa_port *ofdpa_port, + int ifindex) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_internal_vlan_tbl_entry *entry; + struct ofdpa_internal_vlan_tbl_entry *found; + unsigned long lock_flags; + int i; + + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return 0; + + entry->ifindex = ifindex; + + spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags); + + found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex); + if (found) { + kfree(entry); + goto found; + } + + found = entry; + hash_add(ofdpa->internal_vlan_tbl, &found->entry, found->ifindex); + + for (i = 0; i < OFDPA_N_INTERNAL_VLANS; i++) { + if (test_and_set_bit(i, ofdpa->internal_vlan_bitmap)) + continue; + found->vlan_id = htons(OFDPA_INTERNAL_VLAN_ID_BASE + i); + goto found; + } + + netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n"); + +found: + found->ref_count++; + spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags); + + return found->vlan_id; +} + +static int ofdpa_port_fib_ipv4(struct ofdpa_port *ofdpa_port, + struct switchdev_trans *trans, __be32 dst, + int dst_len, const struct fib_info *fi, + u32 tb_id, int flags) +{ + const struct fib_nh *nh; + __be16 eth_type = htons(ETH_P_IP); + __be32 dst_mask = inet_make_mask(dst_len); + __be16 internal_vlan_id = ofdpa_port->internal_vlan_id; + u32 priority = fi->fib_priority; + enum rocker_of_dpa_table_id goto_tbl = + ROCKER_OF_DPA_TABLE_ID_ACL_POLICY; + u32 group_id; + bool nh_on_port; + bool has_gw; + u32 index; + int err; + + /* XXX support ECMP */ + + nh = fi->fib_nh; + nh_on_port = (fi->fib_dev == ofdpa_port->dev); + has_gw = !!nh->nh_gw; + + if (has_gw && nh_on_port) { + err = ofdpa_port_ipv4_nh(ofdpa_port, trans, flags, + nh->nh_gw, &index); + if (err) + return err; + + group_id = ROCKER_GROUP_L3_UNICAST(index); + } else { + /* Send to CPU for processing */ + group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0); + } + + err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, trans, eth_type, dst, + dst_mask, priority, goto_tbl, + group_id, flags); + if (err) + netdev_err(ofdpa_port->dev, "Error (%d) IPv4 route %pI4\n", + err, &dst); + + return err; +} + +static void +ofdpa_port_internal_vlan_id_put(const struct ofdpa_port *ofdpa_port, + int ifindex) +{ + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_internal_vlan_tbl_entry *found; + unsigned long lock_flags; + unsigned long bit; + + spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags); + + found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex); + if (!found) { + netdev_err(ofdpa_port->dev, + "ifindex (%d) not found in internal VLAN tbl\n", + ifindex); + goto not_found; + } + + if (--found->ref_count <= 0) { + bit = ntohs(found->vlan_id) - OFDPA_INTERNAL_VLAN_ID_BASE; + clear_bit(bit, ofdpa->internal_vlan_bitmap); + hash_del(&found->entry); + kfree(found); + } + +not_found: + spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags); +} + +/********************************** + * Rocker world ops implementation + **********************************/ + +static int ofdpa_init(struct rocker *rocker) +{ + struct ofdpa *ofdpa = rocker->wpriv; + + ofdpa->rocker = rocker; + + hash_init(ofdpa->flow_tbl); + spin_lock_init(&ofdpa->flow_tbl_lock); + + hash_init(ofdpa->group_tbl); + spin_lock_init(&ofdpa->group_tbl_lock); + + hash_init(ofdpa->fdb_tbl); + spin_lock_init(&ofdpa->fdb_tbl_lock); + + hash_init(ofdpa->internal_vlan_tbl); + spin_lock_init(&ofdpa->internal_vlan_tbl_lock); + + hash_init(ofdpa->neigh_tbl); + spin_lock_init(&ofdpa->neigh_tbl_lock); + + setup_timer(&ofdpa->fdb_cleanup_timer, ofdpa_fdb_cleanup, + (unsigned long) ofdpa); + mod_timer(&ofdpa->fdb_cleanup_timer, jiffies); + + ofdpa->ageing_time = BR_DEFAULT_AGEING_TIME; + + return 0; +} + +static void ofdpa_fini(struct rocker *rocker) +{ + struct ofdpa *ofdpa = rocker->wpriv; + + unsigned long flags; + struct ofdpa_flow_tbl_entry *flow_entry; + struct ofdpa_group_tbl_entry *group_entry; + struct ofdpa_fdb_tbl_entry *fdb_entry; + struct ofdpa_internal_vlan_tbl_entry *internal_vlan_entry; + struct ofdpa_neigh_tbl_entry *neigh_entry; + struct hlist_node *tmp; + int bkt; + + del_timer_sync(&ofdpa->fdb_cleanup_timer); + + spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags); + hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry) + hash_del(&flow_entry->entry); + spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags); + + spin_lock_irqsave(&ofdpa->group_tbl_lock, flags); + hash_for_each_safe(ofdpa->group_tbl, bkt, tmp, group_entry, entry) + hash_del(&group_entry->entry); + spin_unlock_irqrestore(&ofdpa->group_tbl_lock, flags); + + spin_lock_irqsave(&ofdpa->fdb_tbl_lock, flags); + hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, fdb_entry, entry) + hash_del(&fdb_entry->entry); + spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, flags); + + spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, flags); + hash_for_each_safe(ofdpa->internal_vlan_tbl, bkt, + tmp, internal_vlan_entry, entry) + hash_del(&internal_vlan_entry->entry); + spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, flags); + + spin_lock_irqsave(&ofdpa->neigh_tbl_lock, flags); + hash_for_each_safe(ofdpa->neigh_tbl, bkt, tmp, neigh_entry, entry) + hash_del(&neigh_entry->entry); + spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, flags); +} + +static int ofdpa_port_pre_init(struct rocker_port *rocker_port) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + ofdpa_port->ofdpa = rocker_port->rocker->wpriv; + ofdpa_port->rocker_port = rocker_port; + ofdpa_port->dev = rocker_port->dev; + ofdpa_port->pport = rocker_port->pport; + ofdpa_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC; + ofdpa_port->ageing_time = BR_DEFAULT_AGEING_TIME; + return 0; +} + +static int ofdpa_port_init(struct rocker_port *rocker_port) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int err; + + switchdev_port_fwd_mark_set(ofdpa_port->dev, NULL, false); + rocker_port_set_learning(rocker_port, + !!(ofdpa_port->brport_flags & BR_LEARNING)); + + err = ofdpa_port_ig_tbl(ofdpa_port, NULL, 0); + if (err) { + netdev_err(ofdpa_port->dev, "install ig port table failed\n"); + return err; + } + + ofdpa_port->internal_vlan_id = + ofdpa_port_internal_vlan_id_get(ofdpa_port, + ofdpa_port->dev->ifindex); + + err = ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0); + if (err) { + netdev_err(ofdpa_port->dev, "install untagged VLAN failed\n"); + goto err_untagged_vlan; + } + return 0; + +err_untagged_vlan: + ofdpa_port_ig_tbl(ofdpa_port, NULL, OFDPA_OP_FLAG_REMOVE); + return err; +} + +static void ofdpa_port_fini(struct rocker_port *rocker_port) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + ofdpa_port_ig_tbl(ofdpa_port, NULL, OFDPA_OP_FLAG_REMOVE); +} + +static int ofdpa_port_open(struct rocker_port *rocker_port) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + return ofdpa_port_fwd_enable(ofdpa_port, 0); +} + +static void ofdpa_port_stop(struct rocker_port *rocker_port) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + ofdpa_port_fwd_disable(ofdpa_port, OFDPA_OP_FLAG_NOWAIT); +} + +static int ofdpa_port_attr_stp_state_set(struct rocker_port *rocker_port, + u8 state, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + return ofdpa_port_stp_update(ofdpa_port, trans, 0, state); +} + +static int ofdpa_port_attr_bridge_flags_set(struct rocker_port *rocker_port, + unsigned long brport_flags, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + unsigned long orig_flags; + int err = 0; + + orig_flags = ofdpa_port->brport_flags; + ofdpa_port->brport_flags = brport_flags; + if ((orig_flags ^ ofdpa_port->brport_flags) & BR_LEARNING && + !switchdev_trans_ph_prepare(trans)) + err = rocker_port_set_learning(ofdpa_port->rocker_port, + !!(ofdpa_port->brport_flags & BR_LEARNING)); + + if (switchdev_trans_ph_prepare(trans)) + ofdpa_port->brport_flags = orig_flags; + + return err; +} + +static int +ofdpa_port_attr_bridge_flags_get(const struct rocker_port *rocker_port, + unsigned long *p_brport_flags) +{ + const struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + *p_brport_flags = ofdpa_port->brport_flags; + return 0; +} + +static int +ofdpa_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port, + u32 ageing_time, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + + if (!switchdev_trans_ph_prepare(trans)) { + ofdpa_port->ageing_time = clock_t_to_jiffies(ageing_time); + if (ofdpa_port->ageing_time < ofdpa->ageing_time) + ofdpa->ageing_time = ofdpa_port->ageing_time; + mod_timer(&ofdpa_port->ofdpa->fdb_cleanup_timer, jiffies); + } + + return 0; +} + +static int ofdpa_port_obj_vlan_add(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + u16 vid; + int err; + + for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { + err = ofdpa_port_vlan_add(ofdpa_port, trans, vid, vlan->flags); + if (err) + return err; + } + + return 0; +} + +static int ofdpa_port_obj_vlan_del(struct rocker_port *rocker_port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + u16 vid; + int err; + + for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { + err = ofdpa_port_vlan_del(ofdpa_port, vid, vlan->flags); + if (err) + return err; + } + + return 0; +} + +static int ofdpa_port_obj_vlan_dump(const struct rocker_port *rocker_port, + struct switchdev_obj_port_vlan *vlan, + switchdev_obj_dump_cb_t *cb) +{ + const struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + u16 vid; + int err = 0; + + for (vid = 1; vid < VLAN_N_VID; vid++) { + if (!test_bit(vid, ofdpa_port->vlan_bitmap)) + continue; + vlan->flags = 0; + if (ofdpa_vlan_id_is_internal(htons(vid))) + vlan->flags |= BRIDGE_VLAN_INFO_PVID; + vlan->vid_begin = vlan->vid_end = vid; + err = cb(&vlan->obj); + if (err) + break; + } + + return err; +} + +static int ofdpa_port_obj_fib4_add(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + return ofdpa_port_fib_ipv4(ofdpa_port, trans, + htonl(fib4->dst), fib4->dst_len, + &fib4->fi, fib4->tb_id, 0); +} + +static int ofdpa_port_obj_fib4_del(struct rocker_port *rocker_port, + const struct switchdev_obj_ipv4_fib *fib4) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + + return ofdpa_port_fib_ipv4(ofdpa_port, NULL, + htonl(fib4->dst), fib4->dst_len, + &fib4->fi, fib4->tb_id, + OFDPA_OP_FLAG_REMOVE); +} + +static int ofdpa_port_obj_fdb_add(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb, + struct switchdev_trans *trans) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + __be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, fdb->vid, NULL); + + if (!ofdpa_port_is_bridged(ofdpa_port)) + return -EINVAL; + + return ofdpa_port_fdb(ofdpa_port, trans, fdb->addr, vlan_id, 0); +} + +static int ofdpa_port_obj_fdb_del(struct rocker_port *rocker_port, + const struct switchdev_obj_port_fdb *fdb) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + __be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, fdb->vid, NULL); + int flags = OFDPA_OP_FLAG_REMOVE; + + if (!ofdpa_port_is_bridged(ofdpa_port)) + return -EINVAL; + + return ofdpa_port_fdb(ofdpa_port, NULL, fdb->addr, vlan_id, flags); +} + +static int ofdpa_port_obj_fdb_dump(const struct rocker_port *rocker_port, + struct switchdev_obj_port_fdb *fdb, + switchdev_obj_dump_cb_t *cb) +{ + const struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + struct ofdpa *ofdpa = ofdpa_port->ofdpa; + struct ofdpa_fdb_tbl_entry *found; + struct hlist_node *tmp; + unsigned long lock_flags; + int bkt; + int err = 0; + + spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags); + hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) { + if (found->key.ofdpa_port != ofdpa_port) + continue; + ether_addr_copy(fdb->addr, found->key.addr); + fdb->ndm_state = NUD_REACHABLE; + fdb->vid = ofdpa_port_vlan_to_vid(ofdpa_port, + found->key.vlan_id); + err = cb(&fdb->obj); + if (err) + break; + } + spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags); + + return err; +} + +static int ofdpa_port_bridge_join(struct ofdpa_port *ofdpa_port, + struct net_device *bridge) +{ + int err; + + /* Port is joining bridge, so the internal VLAN for the + * port is going to change to the bridge internal VLAN. + * Let's remove untagged VLAN (vid=0) from port and + * re-add once internal VLAN has changed. + */ + + err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0); + if (err) + return err; + + ofdpa_port_internal_vlan_id_put(ofdpa_port, + ofdpa_port->dev->ifindex); + ofdpa_port->internal_vlan_id = + ofdpa_port_internal_vlan_id_get(ofdpa_port, bridge->ifindex); + + ofdpa_port->bridge_dev = bridge; + switchdev_port_fwd_mark_set(ofdpa_port->dev, bridge, true); + + return ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0); +} + +static int ofdpa_port_bridge_leave(struct ofdpa_port *ofdpa_port) +{ + int err; + + err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0); + if (err) + return err; + + ofdpa_port_internal_vlan_id_put(ofdpa_port, + ofdpa_port->bridge_dev->ifindex); + ofdpa_port->internal_vlan_id = + ofdpa_port_internal_vlan_id_get(ofdpa_port, + ofdpa_port->dev->ifindex); + + switchdev_port_fwd_mark_set(ofdpa_port->dev, ofdpa_port->bridge_dev, + false); + ofdpa_port->bridge_dev = NULL; + + err = ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0); + if (err) + return err; + + if (ofdpa_port->dev->flags & IFF_UP) + err = ofdpa_port_fwd_enable(ofdpa_port, 0); + + return err; +} + +static int ofdpa_port_ovs_changed(struct ofdpa_port *ofdpa_port, + struct net_device *master) +{ + int err; + + ofdpa_port->bridge_dev = master; + + err = ofdpa_port_fwd_disable(ofdpa_port, 0); + if (err) + return err; + err = ofdpa_port_fwd_enable(ofdpa_port, 0); + + return err; +} + +static int ofdpa_port_master_linked(struct rocker_port *rocker_port, + struct net_device *master) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int err = 0; + + if (netif_is_bridge_master(master)) + err = ofdpa_port_bridge_join(ofdpa_port, master); + else if (netif_is_ovs_master(master)) + err = ofdpa_port_ovs_changed(ofdpa_port, master); + return err; +} + +static int ofdpa_port_master_unlinked(struct rocker_port *rocker_port, + struct net_device *master) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int err = 0; + + if (ofdpa_port_is_bridged(ofdpa_port)) + err = ofdpa_port_bridge_leave(ofdpa_port); + else if (ofdpa_port_is_ovsed(ofdpa_port)) + err = ofdpa_port_ovs_changed(ofdpa_port, NULL); + return err; +} + +static int ofdpa_port_neigh_update(struct rocker_port *rocker_port, + struct neighbour *n) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int flags = (n->nud_state & NUD_VALID ? 0 : OFDPA_OP_FLAG_REMOVE) | + OFDPA_OP_FLAG_NOWAIT; + __be32 ip_addr = *(__be32 *) n->primary_key; + + return ofdpa_port_ipv4_neigh(ofdpa_port, NULL, flags, ip_addr, n->ha); +} + +static int ofdpa_port_neigh_destroy(struct rocker_port *rocker_port, + struct neighbour *n) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int flags = OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT; + __be32 ip_addr = *(__be32 *) n->primary_key; + + return ofdpa_port_ipv4_neigh(ofdpa_port, NULL, flags, ip_addr, n->ha); +} + +static int ofdpa_port_ev_mac_vlan_seen(struct rocker_port *rocker_port, + const unsigned char *addr, + __be16 vlan_id) +{ + struct ofdpa_port *ofdpa_port = rocker_port->wpriv; + int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_LEARNED; + + if (ofdpa_port->stp_state != BR_STATE_LEARNING && + ofdpa_port->stp_state != BR_STATE_FORWARDING) + return 0; + + return ofdpa_port_fdb(ofdpa_port, NULL, addr, vlan_id, flags); +} + +struct rocker_world_ops rocker_ofdpa_ops = { + .kind = "ofdpa", + .priv_size = sizeof(struct ofdpa), + .port_priv_size = sizeof(struct ofdpa_port), + .mode = ROCKER_PORT_MODE_OF_DPA, + .init = ofdpa_init, + .fini = ofdpa_fini, + .port_pre_init = ofdpa_port_pre_init, + .port_init = ofdpa_port_init, + .port_fini = ofdpa_port_fini, + .port_open = ofdpa_port_open, + .port_stop = ofdpa_port_stop, + .port_attr_stp_state_set = ofdpa_port_attr_stp_state_set, + .port_attr_bridge_flags_set = ofdpa_port_attr_bridge_flags_set, + .port_attr_bridge_flags_get = ofdpa_port_attr_bridge_flags_get, + .port_attr_bridge_ageing_time_set = ofdpa_port_attr_bridge_ageing_time_set, + .port_obj_vlan_add = ofdpa_port_obj_vlan_add, + .port_obj_vlan_del = ofdpa_port_obj_vlan_del, + .port_obj_vlan_dump = ofdpa_port_obj_vlan_dump, + .port_obj_fib4_add = ofdpa_port_obj_fib4_add, + .port_obj_fib4_del = ofdpa_port_obj_fib4_del, + .port_obj_fdb_add = ofdpa_port_obj_fdb_add, + .port_obj_fdb_del = ofdpa_port_obj_fdb_del, + .port_obj_fdb_dump = ofdpa_port_obj_fdb_dump, + .port_master_linked = ofdpa_port_master_linked, + .port_master_unlinked = ofdpa_port_master_unlinked, + .port_neigh_update = ofdpa_port_neigh_update, + .port_neigh_destroy = ofdpa_port_neigh_destroy, + .port_ev_mac_vlan_seen = ofdpa_port_ev_mac_vlan_seen, +}; diff --git a/drivers/net/ethernet/rocker/rocker_tlv.c b/drivers/net/ethernet/rocker/rocker_tlv.c new file mode 100644 index 000000000..8185118f3 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_tlv.c @@ -0,0 +1,53 @@ +/* + * drivers/net/ethernet/rocker/rocker_tlv.c - Rocker switch device driver + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/types.h> +#include <linux/string.h> +#include <linux/errno.h> + +#include "rocker_hw.h" +#include "rocker_tlv.h" + +void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype, + const char *buf, int buf_len) +{ + const struct rocker_tlv *tlv; + const struct rocker_tlv *head = (const struct rocker_tlv *) buf; + int rem; + + memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1)); + + rocker_tlv_for_each(tlv, head, buf_len, rem) { + u32 type = rocker_tlv_type(tlv); + + if (type > 0 && type <= maxtype) + tb[type] = tlv; + } +} + +int rocker_tlv_put(struct rocker_desc_info *desc_info, + int attrtype, int attrlen, const void *data) +{ + int tail_room = desc_info->data_size - desc_info->tlv_size; + int total_size = rocker_tlv_total_size(attrlen); + struct rocker_tlv *tlv; + + if (unlikely(tail_room < total_size)) + return -EMSGSIZE; + + tlv = rocker_tlv_start(desc_info); + desc_info->tlv_size += total_size; + tlv->type = attrtype; + tlv->len = rocker_tlv_attr_size(attrlen); + memcpy(rocker_tlv_data(tlv), data, attrlen); + memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen)); + return 0; +} diff --git a/drivers/net/ethernet/rocker/rocker_tlv.h b/drivers/net/ethernet/rocker/rocker_tlv.h new file mode 100644 index 000000000..a63ef82e7 --- /dev/null +++ b/drivers/net/ethernet/rocker/rocker_tlv.h @@ -0,0 +1,201 @@ +/* + * drivers/net/ethernet/rocker/rocker_tlv.h - Rocker switch device driver + * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com> + * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _ROCKER_TLV_H +#define _ROCKER_TLV_H + +#include <linux/types.h> + +#include "rocker_hw.h" +#include "rocker.h" + +#define ROCKER_TLV_ALIGNTO 8U +#define ROCKER_TLV_ALIGN(len) \ + (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1)) +#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv)) + +/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) ---> + * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ + * | Header | Pad | Payload | Pad | + * | (struct rocker_tlv) | ing | | ing | + * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+ + * <--------------------------- tlv->len --------------------------> + */ + +static inline struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv, + int *remaining) +{ + int totlen = ROCKER_TLV_ALIGN(tlv->len); + + *remaining -= totlen; + return (struct rocker_tlv *) ((char *) tlv + totlen); +} + +static inline int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining) +{ + return remaining >= (int) ROCKER_TLV_HDRLEN && + tlv->len >= ROCKER_TLV_HDRLEN && + tlv->len <= remaining; +} + +#define rocker_tlv_for_each(pos, head, len, rem) \ + for (pos = head, rem = len; \ + rocker_tlv_ok(pos, rem); \ + pos = rocker_tlv_next(pos, &(rem))) + +#define rocker_tlv_for_each_nested(pos, tlv, rem) \ + rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \ + rocker_tlv_len(tlv), rem) + +static inline int rocker_tlv_attr_size(int payload) +{ + return ROCKER_TLV_HDRLEN + payload; +} + +static inline int rocker_tlv_total_size(int payload) +{ + return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload)); +} + +static inline int rocker_tlv_padlen(int payload) +{ + return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload); +} + +static inline int rocker_tlv_type(const struct rocker_tlv *tlv) +{ + return tlv->type; +} + +static inline void *rocker_tlv_data(const struct rocker_tlv *tlv) +{ + return (char *) tlv + ROCKER_TLV_HDRLEN; +} + +static inline int rocker_tlv_len(const struct rocker_tlv *tlv) +{ + return tlv->len - ROCKER_TLV_HDRLEN; +} + +static inline u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv) +{ + return *(u8 *) rocker_tlv_data(tlv); +} + +static inline u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv) +{ + return *(u16 *) rocker_tlv_data(tlv); +} + +static inline __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv) +{ + return *(__be16 *) rocker_tlv_data(tlv); +} + +static inline u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv) +{ + return *(u32 *) rocker_tlv_data(tlv); +} + +static inline u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv) +{ + return *(u64 *) rocker_tlv_data(tlv); +} + +void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype, + const char *buf, int buf_len); + +static inline void rocker_tlv_parse_nested(const struct rocker_tlv **tb, + int maxtype, + const struct rocker_tlv *tlv) +{ + rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv), + rocker_tlv_len(tlv)); +} + +static inline void +rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype, + const struct rocker_desc_info *desc_info) +{ + rocker_tlv_parse(tb, maxtype, desc_info->data, + desc_info->desc->tlv_size); +} + +static inline struct rocker_tlv * +rocker_tlv_start(struct rocker_desc_info *desc_info) +{ + return (struct rocker_tlv *) ((char *) desc_info->data + + desc_info->tlv_size); +} + +int rocker_tlv_put(struct rocker_desc_info *desc_info, + int attrtype, int attrlen, const void *data); + +static inline int rocker_tlv_put_u8(struct rocker_desc_info *desc_info, + int attrtype, u8 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value); +} + +static inline int rocker_tlv_put_u16(struct rocker_desc_info *desc_info, + int attrtype, u16 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value); +} + +static inline int rocker_tlv_put_be16(struct rocker_desc_info *desc_info, + int attrtype, __be16 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value); +} + +static inline int rocker_tlv_put_u32(struct rocker_desc_info *desc_info, + int attrtype, u32 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value); +} + +static inline int rocker_tlv_put_be32(struct rocker_desc_info *desc_info, + int attrtype, __be32 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value); +} + +static inline int rocker_tlv_put_u64(struct rocker_desc_info *desc_info, + int attrtype, u64 value) +{ + return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value); +} + +static inline struct rocker_tlv * +rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype) +{ + struct rocker_tlv *start = rocker_tlv_start(desc_info); + + if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0) + return NULL; + + return start; +} + +static inline void rocker_tlv_nest_end(struct rocker_desc_info *desc_info, + struct rocker_tlv *start) +{ + start->len = (char *) rocker_tlv_start(desc_info) - (char *) start; +} + +static inline void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info, + const struct rocker_tlv *start) +{ + desc_info->tlv_size = (const char *) start - desc_info->data; +} + +#endif |