Linux-libre 4.5-gnu

1 files changed, 0 insertions, 504 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/flowring.c b/drivers/net/wireless/brcm80211/brcmfmac/flowring.c
deleted file mode 100644
index 2ca783fa5..000000000
--- a/drivers/net/wireless/brcm80211/brcmfmac/flowring.c
+++ /dev/null
@@ -1,504 +0,0 @@
-/* Copyright (c) 2014 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <brcmu_utils.h>
-
-#include "core.h"
-#include "debug.h"
-#include "bus.h"
-#include "proto.h"
-#include "flowring.h"
-#include "msgbuf.h"
-#include "common.h"
-
-
-#define BRCMF_FLOWRING_HIGH		1024
-#define BRCMF_FLOWRING_LOW		(BRCMF_FLOWRING_HIGH - 256)
-#define BRCMF_FLOWRING_INVALID_IFIDX	0xff
-
-#define BRCMF_FLOWRING_HASH_AP(da, fifo, ifidx) (da[5] + fifo + ifidx * 16)
-#define BRCMF_FLOWRING_HASH_STA(fifo, ifidx) (fifo + ifidx * 16)
-
-static const u8 brcmf_flowring_prio2fifo[] = {
-	1,
-	0,
-	0,
-	1,
-	2,
-	2,
-	3,
-	3
-};
-
-
-static bool
-brcmf_flowring_is_tdls_mac(struct brcmf_flowring *flow, u8 mac[ETH_ALEN])
-{
-	struct brcmf_flowring_tdls_entry *search;
-
-	search = flow->tdls_entry;
-
-	while (search) {
-		if (memcmp(search->mac, mac, ETH_ALEN) == 0)
-			return true;
-		search = search->next;
-	}
-
-	return false;
-}
-
-
-u32 brcmf_flowring_lookup(struct brcmf_flowring *flow, u8 da[ETH_ALEN],
-			  u8 prio, u8 ifidx)
-{
-	struct brcmf_flowring_hash *hash;
-	u8 hash_idx;
-	u32 i;
-	bool found;
-	bool sta;
-	u8 fifo;
-	u8 *mac;
-
-	fifo = brcmf_flowring_prio2fifo[prio];
-	sta = (flow->addr_mode[ifidx] == ADDR_INDIRECT);
-	mac = da;
-	if ((!sta) && (is_multicast_ether_addr(da))) {
-		mac = (u8 *)ALLFFMAC;
-		fifo = 0;
-	}
-	if ((sta) && (flow->tdls_active) &&
-	    (brcmf_flowring_is_tdls_mac(flow, da))) {
-		sta = false;
-	}
-	hash_idx =  sta ? BRCMF_FLOWRING_HASH_STA(fifo, ifidx) :
-			  BRCMF_FLOWRING_HASH_AP(mac, fifo, ifidx);
-	found = false;
-	hash = flow->hash;
-	for (i = 0; i < BRCMF_FLOWRING_HASHSIZE; i++) {
-		if ((sta || (memcmp(hash[hash_idx].mac, mac, ETH_ALEN) == 0)) &&
-		    (hash[hash_idx].fifo == fifo) &&
-		    (hash[hash_idx].ifidx == ifidx)) {
-			found = true;
-			break;
-		}
-		hash_idx++;
-	}
-	if (found)
-		return hash[hash_idx].flowid;
-
-	return BRCMF_FLOWRING_INVALID_ID;
-}
-
-
-u32 brcmf_flowring_create(struct brcmf_flowring *flow, u8 da[ETH_ALEN],
-			  u8 prio, u8 ifidx)
-{
-	struct brcmf_flowring_ring *ring;
-	struct brcmf_flowring_hash *hash;
-	u8 hash_idx;
-	u32 i;
-	bool found;
-	u8 fifo;
-	bool sta;
-	u8 *mac;
-
-	fifo = brcmf_flowring_prio2fifo[prio];
-	sta = (flow->addr_mode[ifidx] == ADDR_INDIRECT);
-	mac = da;
-	if ((!sta) && (is_multicast_ether_addr(da))) {
-		mac = (u8 *)ALLFFMAC;
-		fifo = 0;
-	}
-	if ((sta) && (flow->tdls_active) &&
-	    (brcmf_flowring_is_tdls_mac(flow, da))) {
-		sta = false;
-	}
-	hash_idx =  sta ? BRCMF_FLOWRING_HASH_STA(fifo, ifidx) :
-			  BRCMF_FLOWRING_HASH_AP(mac, fifo, ifidx);
-	found = false;
-	hash = flow->hash;
-	for (i = 0; i < BRCMF_FLOWRING_HASHSIZE; i++) {
-		if ((hash[hash_idx].ifidx == BRCMF_FLOWRING_INVALID_IFIDX) &&
-		    (is_zero_ether_addr(hash[hash_idx].mac))) {
-			found = true;
-			break;
-		}
-		hash_idx++;
-	}
-	if (found) {
-		for (i = 0; i < flow->nrofrings; i++) {
-			if (flow->rings[i] == NULL)
-				break;
-		}
-		if (i == flow->nrofrings)
-			return -ENOMEM;
-
-		ring = kzalloc(sizeof(*ring), GFP_ATOMIC);
-		if (!ring)
-			return -ENOMEM;
-
-		memcpy(hash[hash_idx].mac, mac, ETH_ALEN);
-		hash[hash_idx].fifo = fifo;
-		hash[hash_idx].ifidx = ifidx;
-		hash[hash_idx].flowid = i;
-
-		ring->hash_id = hash_idx;
-		ring->status = RING_CLOSED;
-		skb_queue_head_init(&ring->skblist);
-		flow->rings[i] = ring;
-
-		return i;
-	}
-	return BRCMF_FLOWRING_INVALID_ID;
-}
-
-
-u8 brcmf_flowring_tid(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-
-	ring = flow->rings[flowid];
-
-	return flow->hash[ring->hash_id].fifo;
-}
-
-
-static void brcmf_flowring_block(struct brcmf_flowring *flow, u8 flowid,
-				 bool blocked)
-{
-	struct brcmf_flowring_ring *ring;
-	struct brcmf_bus *bus_if;
-	struct brcmf_pub *drvr;
-	struct brcmf_if *ifp;
-	bool currently_blocked;
-	int i;
-	u8 ifidx;
-	unsigned long flags;
-
-	spin_lock_irqsave(&flow->block_lock, flags);
-
-	ring = flow->rings[flowid];
-	if (ring->blocked == blocked) {
-		spin_unlock_irqrestore(&flow->block_lock, flags);
-		return;
-	}
-	ifidx = brcmf_flowring_ifidx_get(flow, flowid);
-
-	currently_blocked = false;
-	for (i = 0; i < flow->nrofrings; i++) {
-		if ((flow->rings[i]) && (i != flowid)) {
-			ring = flow->rings[i];
-			if ((ring->status == RING_OPEN) &&
-			    (brcmf_flowring_ifidx_get(flow, i) == ifidx)) {
-				if (ring->blocked) {
-					currently_blocked = true;
-					break;
-				}
-			}
-		}
-	}
-	flow->rings[flowid]->blocked = blocked;
-	if (currently_blocked) {
-		spin_unlock_irqrestore(&flow->block_lock, flags);
-		return;
-	}
-
-	bus_if = dev_get_drvdata(flow->dev);
-	drvr = bus_if->drvr;
-	ifp = brcmf_get_ifp(drvr, ifidx);
-	brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW, blocked);
-
-	spin_unlock_irqrestore(&flow->block_lock, flags);
-}
-
-
-void brcmf_flowring_delete(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-	u8 hash_idx;
-	struct sk_buff *skb;
-
-	ring = flow->rings[flowid];
-	if (!ring)
-		return;
-	brcmf_flowring_block(flow, flowid, false);
-	hash_idx = ring->hash_id;
-	flow->hash[hash_idx].ifidx = BRCMF_FLOWRING_INVALID_IFIDX;
-	eth_zero_addr(flow->hash[hash_idx].mac);
-	flow->rings[flowid] = NULL;
-
-	skb = skb_dequeue(&ring->skblist);
-	while (skb) {
-		brcmu_pkt_buf_free_skb(skb);
-		skb = skb_dequeue(&ring->skblist);
-	}
-
-	kfree(ring);
-}
-
-
-u32 brcmf_flowring_enqueue(struct brcmf_flowring *flow, u8 flowid,
-			   struct sk_buff *skb)
-{
-	struct brcmf_flowring_ring *ring;
-
-	ring = flow->rings[flowid];
-
-	skb_queue_tail(&ring->skblist, skb);
-
-	if (!ring->blocked &&
-	    (skb_queue_len(&ring->skblist) > BRCMF_FLOWRING_HIGH)) {
-		brcmf_flowring_block(flow, flowid, true);
-		brcmf_dbg(MSGBUF, "Flowcontrol: BLOCK for ring %d\n", flowid);
-		/* To prevent (work around) possible race condition, check
-		 * queue len again. It is also possible to use locking to
-		 * protect, but that is undesirable for every enqueue and
-		 * dequeue. This simple check will solve a possible race
-		 * condition if it occurs.
-		 */
-		if (skb_queue_len(&ring->skblist) < BRCMF_FLOWRING_LOW)
-			brcmf_flowring_block(flow, flowid, false);
-	}
-	return skb_queue_len(&ring->skblist);
-}
-
-
-struct sk_buff *brcmf_flowring_dequeue(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-	struct sk_buff *skb;
-
-	ring = flow->rings[flowid];
-	if (ring->status != RING_OPEN)
-		return NULL;
-
-	skb = skb_dequeue(&ring->skblist);
-
-	if (ring->blocked &&
-	    (skb_queue_len(&ring->skblist) < BRCMF_FLOWRING_LOW)) {
-		brcmf_flowring_block(flow, flowid, false);
-		brcmf_dbg(MSGBUF, "Flowcontrol: OPEN for ring %d\n", flowid);
-	}
-
-	return skb;
-}
-
-
-void brcmf_flowring_reinsert(struct brcmf_flowring *flow, u8 flowid,
-			     struct sk_buff *skb)
-{
-	struct brcmf_flowring_ring *ring;
-
-	ring = flow->rings[flowid];
-
-	skb_queue_head(&ring->skblist, skb);
-}
-
-
-u32 brcmf_flowring_qlen(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-
-	ring = flow->rings[flowid];
-	if (!ring)
-		return 0;
-
-	if (ring->status != RING_OPEN)
-		return 0;
-
-	return skb_queue_len(&ring->skblist);
-}
-
-
-void brcmf_flowring_open(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-
-	ring = flow->rings[flowid];
-	if (!ring) {
-		brcmf_err("Ring NULL, for flowid %d\n", flowid);
-		return;
-	}
-
-	ring->status = RING_OPEN;
-}
-
-
-u8 brcmf_flowring_ifidx_get(struct brcmf_flowring *flow, u8 flowid)
-{
-	struct brcmf_flowring_ring *ring;
-	u8 hash_idx;
-
-	ring = flow->rings[flowid];
-	hash_idx = ring->hash_id;
-
-	return flow->hash[hash_idx].ifidx;
-}
-
-
-struct brcmf_flowring *brcmf_flowring_attach(struct device *dev, u16 nrofrings)
-{
-	struct brcmf_flowring *flow;
-	u32 i;
-
-	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
-	if (flow) {
-		flow->dev = dev;
-		flow->nrofrings = nrofrings;
-		spin_lock_init(&flow->block_lock);
-		for (i = 0; i < ARRAY_SIZE(flow->addr_mode); i++)
-			flow->addr_mode[i] = ADDR_INDIRECT;
-		for (i = 0; i < ARRAY_SIZE(flow->hash); i++)
-			flow->hash[i].ifidx = BRCMF_FLOWRING_INVALID_IFIDX;
-		flow->rings = kcalloc(nrofrings, sizeof(*flow->rings),
-				      GFP_KERNEL);
-		if (!flow->rings) {
-			kfree(flow);
-			flow = NULL;
-		}
-	}
-
-	return flow;
-}
-
-
-void brcmf_flowring_detach(struct brcmf_flowring *flow)
-{
-	struct brcmf_bus *bus_if = dev_get_drvdata(flow->dev);
-	struct brcmf_pub *drvr = bus_if->drvr;
-	struct brcmf_flowring_tdls_entry *search;
-	struct brcmf_flowring_tdls_entry *remove;
-	u8 flowid;
-
-	for (flowid = 0; flowid < flow->nrofrings; flowid++) {
-		if (flow->rings[flowid])
-			brcmf_msgbuf_delete_flowring(drvr, flowid);
-	}
-
-	search = flow->tdls_entry;
-	while (search) {
-		remove = search;
-		search = search->next;
-		kfree(remove);
-	}
-	kfree(flow->rings);
-	kfree(flow);
-}
-
-
-void brcmf_flowring_configure_addr_mode(struct brcmf_flowring *flow, int ifidx,
-					enum proto_addr_mode addr_mode)
-{
-	struct brcmf_bus *bus_if = dev_get_drvdata(flow->dev);
-	struct brcmf_pub *drvr = bus_if->drvr;
-	u32 i;
-	u8 flowid;
-
-	if (flow->addr_mode[ifidx] != addr_mode) {
-		for (i = 0; i < ARRAY_SIZE(flow->hash); i++) {
-			if (flow->hash[i].ifidx == ifidx) {
-				flowid = flow->hash[i].flowid;
-				if (flow->rings[flowid]->status != RING_OPEN)
-					continue;
-				flow->rings[flowid]->status = RING_CLOSING;
-				brcmf_msgbuf_delete_flowring(drvr, flowid);
-			}
-		}
-		flow->addr_mode[ifidx] = addr_mode;
-	}
-}
-
-
-void brcmf_flowring_delete_peer(struct brcmf_flowring *flow, int ifidx,
-				u8 peer[ETH_ALEN])
-{
-	struct brcmf_bus *bus_if = dev_get_drvdata(flow->dev);
-	struct brcmf_pub *drvr = bus_if->drvr;
-	struct brcmf_flowring_hash *hash;
-	struct brcmf_flowring_tdls_entry *prev;
-	struct brcmf_flowring_tdls_entry *search;
-	u32 i;
-	u8 flowid;
-	bool sta;
-
-	sta = (flow->addr_mode[ifidx] == ADDR_INDIRECT);
-
-	search = flow->tdls_entry;
-	prev = NULL;
-	while (search) {
-		if (memcmp(search->mac, peer, ETH_ALEN) == 0) {
-			sta = false;
-			break;
-		}
-		prev = search;
-		search = search->next;
-	}
-
-	hash = flow->hash;
-	for (i = 0; i < BRCMF_FLOWRING_HASHSIZE; i++) {
-		if ((sta || (memcmp(hash[i].mac, peer, ETH_ALEN) == 0)) &&
-		    (hash[i].ifidx == ifidx)) {
-			flowid = flow->hash[i].flowid;
-			if (flow->rings[flowid]->status == RING_OPEN) {
-				flow->rings[flowid]->status = RING_CLOSING;
-				brcmf_msgbuf_delete_flowring(drvr, flowid);
-			}
-		}
-	}
-
-	if (search) {
-		if (prev)
-			prev->next = search->next;
-		else
-			flow->tdls_entry = search->next;
-		kfree(search);
-		if (flow->tdls_entry == NULL)
-			flow->tdls_active = false;
-	}
-}
-
-
-void brcmf_flowring_add_tdls_peer(struct brcmf_flowring *flow, int ifidx,
-				  u8 peer[ETH_ALEN])
-{
-	struct brcmf_flowring_tdls_entry *tdls_entry;
-	struct brcmf_flowring_tdls_entry *search;
-
-	tdls_entry = kzalloc(sizeof(*tdls_entry), GFP_ATOMIC);
-	if (tdls_entry == NULL)
-		return;
-
-	memcpy(tdls_entry->mac, peer, ETH_ALEN);
-	tdls_entry->next = NULL;
-	if (flow->tdls_entry == NULL) {
-		flow->tdls_entry = tdls_entry;
-	} else {
-		search = flow->tdls_entry;
-		if (memcmp(search->mac, peer, ETH_ALEN) == 0)
-			return;
-		while (search->next) {
-			search = search->next;
-			if (memcmp(search->mac, peer, ETH_ALEN) == 0)
-				return;
-		}
-		search->next = tdls_entry;
-	}
-
-	flow->tdls_active = true;
-}