diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /drivers/staging/rdma/ipath/ipath_mad.c | |
parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'drivers/staging/rdma/ipath/ipath_mad.c')
-rw-r--r-- | drivers/staging/rdma/ipath/ipath_mad.c | 1521 |
1 files changed, 1521 insertions, 0 deletions
diff --git a/drivers/staging/rdma/ipath/ipath_mad.c b/drivers/staging/rdma/ipath/ipath_mad.c new file mode 100644 index 000000000..ad3a926ab --- /dev/null +++ b/drivers/staging/rdma/ipath/ipath_mad.c @@ -0,0 +1,1521 @@ +/* + * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. + * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <rdma/ib_smi.h> +#include <rdma/ib_pma.h> + +#include "ipath_kernel.h" +#include "ipath_verbs.h" +#include "ipath_common.h" + +#define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004) +#define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008) +#define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C) +#define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C) + +static int reply(struct ib_smp *smp) +{ + /* + * The verbs framework will handle the directed/LID route + * packet changes. + */ + smp->method = IB_MGMT_METHOD_GET_RESP; + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + smp->status |= IB_SMP_DIRECTION; + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} + +static int recv_subn_get_nodedescription(struct ib_smp *smp, + struct ib_device *ibdev) +{ + if (smp->attr_mod) + smp->status |= IB_SMP_INVALID_FIELD; + + memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); + + return reply(smp); +} + +struct nodeinfo { + u8 base_version; + u8 class_version; + u8 node_type; + u8 num_ports; + __be64 sys_guid; + __be64 node_guid; + __be64 port_guid; + __be16 partition_cap; + __be16 device_id; + __be32 revision; + u8 local_port_num; + u8 vendor_id[3]; +} __attribute__ ((packed)); + +static int recv_subn_get_nodeinfo(struct ib_smp *smp, + struct ib_device *ibdev, u8 port) +{ + struct nodeinfo *nip = (struct nodeinfo *)&smp->data; + struct ipath_devdata *dd = to_idev(ibdev)->dd; + u32 vendor, majrev, minrev; + + /* GUID 0 is illegal */ + if (smp->attr_mod || (dd->ipath_guid == 0)) + smp->status |= IB_SMP_INVALID_FIELD; + + nip->base_version = 1; + nip->class_version = 1; + nip->node_type = 1; /* channel adapter */ + /* + * XXX The num_ports value will need a layer function to get + * the value if we ever have more than one IB port on a chip. + * We will also need to get the GUID for the port. + */ + nip->num_ports = ibdev->phys_port_cnt; + /* This is already in network order */ + nip->sys_guid = to_idev(ibdev)->sys_image_guid; + nip->node_guid = dd->ipath_guid; + nip->port_guid = dd->ipath_guid; + nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd)); + nip->device_id = cpu_to_be16(dd->ipath_deviceid); + majrev = dd->ipath_majrev; + minrev = dd->ipath_minrev; + nip->revision = cpu_to_be32((majrev << 16) | minrev); + nip->local_port_num = port; + vendor = dd->ipath_vendorid; + nip->vendor_id[0] = IPATH_SRC_OUI_1; + nip->vendor_id[1] = IPATH_SRC_OUI_2; + nip->vendor_id[2] = IPATH_SRC_OUI_3; + + return reply(smp); +} + +static int recv_subn_get_guidinfo(struct ib_smp *smp, + struct ib_device *ibdev) +{ + u32 startgx = 8 * be32_to_cpu(smp->attr_mod); + __be64 *p = (__be64 *) smp->data; + + /* 32 blocks of 8 64-bit GUIDs per block */ + + memset(smp->data, 0, sizeof(smp->data)); + + /* + * We only support one GUID for now. If this changes, the + * portinfo.guid_cap field needs to be updated too. + */ + if (startgx == 0) { + __be64 g = to_idev(ibdev)->dd->ipath_guid; + if (g == 0) + /* GUID 0 is illegal */ + smp->status |= IB_SMP_INVALID_FIELD; + else + /* The first is a copy of the read-only HW GUID. */ + *p = g; + } else + smp->status |= IB_SMP_INVALID_FIELD; + + return reply(smp); +} + +static void set_link_width_enabled(struct ipath_devdata *dd, u32 w) +{ + (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, w); +} + +static void set_link_speed_enabled(struct ipath_devdata *dd, u32 s) +{ + (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, s); +} + +static int get_overrunthreshold(struct ipath_devdata *dd) +{ + return (dd->ipath_ibcctrl >> + INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; +} + +/** + * set_overrunthreshold - set the overrun threshold + * @dd: the infinipath device + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n) +{ + unsigned v; + + v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; + if (v != n) { + dd->ipath_ibcctrl &= + ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK << + INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT); + dd->ipath_ibcctrl |= + (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + } + return 0; +} + +static int get_phyerrthreshold(struct ipath_devdata *dd) +{ + return (dd->ipath_ibcctrl >> + INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; +} + +/** + * set_phyerrthreshold - set the physical error threshold + * @dd: the infinipath device + * @n: the new threshold + * + * Note that this will only take effect when the link state changes. + */ +static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n) +{ + unsigned v; + + v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & + INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; + if (v != n) { + dd->ipath_ibcctrl &= + ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK << + INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT); + dd->ipath_ibcctrl |= + (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + } + return 0; +} + +/** + * get_linkdowndefaultstate - get the default linkdown state + * @dd: the infinipath device + * + * Returns zero if the default is POLL, 1 if the default is SLEEP. + */ +static int get_linkdowndefaultstate(struct ipath_devdata *dd) +{ + return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE); +} + +static int recv_subn_get_portinfo(struct ib_smp *smp, + struct ib_device *ibdev, u8 port) +{ + struct ipath_ibdev *dev; + struct ipath_devdata *dd; + struct ib_port_info *pip = (struct ib_port_info *)smp->data; + u16 lid; + u8 ibcstat; + u8 mtu; + int ret; + + if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) { + smp->status |= IB_SMP_INVALID_FIELD; + ret = reply(smp); + goto bail; + } + + dev = to_idev(ibdev); + dd = dev->dd; + + /* Clear all fields. Only set the non-zero fields. */ + memset(smp->data, 0, sizeof(smp->data)); + + /* Only return the mkey if the protection field allows it. */ + if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey || + dev->mkeyprot == 0) + pip->mkey = dev->mkey; + pip->gid_prefix = dev->gid_prefix; + lid = dd->ipath_lid; + pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE; + pip->sm_lid = cpu_to_be16(dev->sm_lid); + pip->cap_mask = cpu_to_be32(dev->port_cap_flags); + /* pip->diag_code; */ + pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period); + pip->local_port_num = port; + pip->link_width_enabled = dd->ipath_link_width_enabled; + pip->link_width_supported = dd->ipath_link_width_supported; + pip->link_width_active = dd->ipath_link_width_active; + pip->linkspeed_portstate = dd->ipath_link_speed_supported << 4; + ibcstat = dd->ipath_lastibcstat; + /* map LinkState to IB portinfo values. */ + pip->linkspeed_portstate |= ipath_ib_linkstate(dd, ibcstat) + 1; + + pip->portphysstate_linkdown = + (ipath_cvt_physportstate[ibcstat & dd->ibcs_lts_mask] << 4) | + (get_linkdowndefaultstate(dd) ? 1 : 2); + pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dd->ipath_lmc; + pip->linkspeedactive_enabled = (dd->ipath_link_speed_active << 4) | + dd->ipath_link_speed_enabled; + switch (dd->ipath_ibmtu) { + case 4096: + mtu = IB_MTU_4096; + break; + case 2048: + mtu = IB_MTU_2048; + break; + case 1024: + mtu = IB_MTU_1024; + break; + case 512: + mtu = IB_MTU_512; + break; + case 256: + mtu = IB_MTU_256; + break; + default: /* oops, something is wrong */ + mtu = IB_MTU_2048; + break; + } + pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl; + pip->vlcap_inittype = 0x10; /* VLCap = VL0, InitType = 0 */ + pip->vl_high_limit = dev->vl_high_limit; + /* pip->vl_arb_high_cap; // only one VL */ + /* pip->vl_arb_low_cap; // only one VL */ + /* InitTypeReply = 0 */ + /* our mtu cap depends on whether 4K MTU enabled or not */ + pip->inittypereply_mtucap = ipath_mtu4096 ? IB_MTU_4096 : IB_MTU_2048; + /* HCAs ignore VLStallCount and HOQLife */ + /* pip->vlstallcnt_hoqlife; */ + pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */ + pip->mkey_violations = cpu_to_be16(dev->mkey_violations); + /* P_KeyViolations are counted by hardware. */ + pip->pkey_violations = + cpu_to_be16((ipath_get_cr_errpkey(dd) - + dev->z_pkey_violations) & 0xFFFF); + pip->qkey_violations = cpu_to_be16(dev->qkey_violations); + /* Only the hardware GUID is supported for now */ + pip->guid_cap = 1; + pip->clientrereg_resv_subnetto = dev->subnet_timeout; + /* 32.768 usec. response time (guessing) */ + pip->resv_resptimevalue = 3; + pip->localphyerrors_overrunerrors = + (get_phyerrthreshold(dd) << 4) | + get_overrunthreshold(dd); + /* pip->max_credit_hint; */ + if (dev->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { + u32 v; + + v = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LINKLATENCY); + pip->link_roundtrip_latency[0] = v >> 16; + pip->link_roundtrip_latency[1] = v >> 8; + pip->link_roundtrip_latency[2] = v; + } + + ret = reply(smp); + +bail: + return ret; +} + +/** + * get_pkeys - return the PKEY table for port 0 + * @dd: the infinipath device + * @pkeys: the pkey table is placed here + */ +static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys) +{ + /* always a kernel port, no locking needed */ + struct ipath_portdata *pd = dd->ipath_pd[0]; + + memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys)); + + return 0; +} + +static int recv_subn_get_pkeytable(struct ib_smp *smp, + struct ib_device *ibdev) +{ + u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); + u16 *p = (u16 *) smp->data; + __be16 *q = (__be16 *) smp->data; + + /* 64 blocks of 32 16-bit P_Key entries */ + + memset(smp->data, 0, sizeof(smp->data)); + if (startpx == 0) { + struct ipath_ibdev *dev = to_idev(ibdev); + unsigned i, n = ipath_get_npkeys(dev->dd); + + get_pkeys(dev->dd, p); + + for (i = 0; i < n; i++) + q[i] = cpu_to_be16(p[i]); + } else + smp->status |= IB_SMP_INVALID_FIELD; + + return reply(smp); +} + +static int recv_subn_set_guidinfo(struct ib_smp *smp, + struct ib_device *ibdev) +{ + /* The only GUID we support is the first read-only entry. */ + return recv_subn_get_guidinfo(smp, ibdev); +} + +/** + * set_linkdowndefaultstate - set the default linkdown state + * @dd: the infinipath device + * @sleep: the new state + * + * Note that this will only take effect when the link state changes. + */ +static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep) +{ + if (sleep) + dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; + else + dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; + ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, + dd->ipath_ibcctrl); + return 0; +} + +/** + * recv_subn_set_portinfo - set port information + * @smp: the incoming SM packet + * @ibdev: the infiniband device + * @port: the port on the device + * + * Set Portinfo (see ch. 14.2.5.6). + */ +static int recv_subn_set_portinfo(struct ib_smp *smp, + struct ib_device *ibdev, u8 port) +{ + struct ib_port_info *pip = (struct ib_port_info *)smp->data; + struct ib_event event; + struct ipath_ibdev *dev; + struct ipath_devdata *dd; + char clientrereg = 0; + u16 lid, smlid; + u8 lwe; + u8 lse; + u8 state; + u16 lstate; + u32 mtu; + int ret, ore; + + if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) + goto err; + + dev = to_idev(ibdev); + dd = dev->dd; + event.device = ibdev; + event.element.port_num = port; + + dev->mkey = pip->mkey; + dev->gid_prefix = pip->gid_prefix; + dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); + + lid = be16_to_cpu(pip->lid); + if (dd->ipath_lid != lid || + dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) { + /* Must be a valid unicast LID address. */ + if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) + goto err; + ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7); + event.event = IB_EVENT_LID_CHANGE; + ib_dispatch_event(&event); + } + + smlid = be16_to_cpu(pip->sm_lid); + if (smlid != dev->sm_lid) { + /* Must be a valid unicast LID address. */ + if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE) + goto err; + dev->sm_lid = smlid; + event.event = IB_EVENT_SM_CHANGE; + ib_dispatch_event(&event); + } + + /* Allow 1x or 4x to be set (see 14.2.6.6). */ + lwe = pip->link_width_enabled; + if (lwe) { + if (lwe == 0xFF) + lwe = dd->ipath_link_width_supported; + else if (lwe >= 16 || (lwe & ~dd->ipath_link_width_supported)) + goto err; + set_link_width_enabled(dd, lwe); + } + + /* Allow 2.5 or 5.0 Gbs. */ + lse = pip->linkspeedactive_enabled & 0xF; + if (lse) { + if (lse == 15) + lse = dd->ipath_link_speed_supported; + else if (lse >= 8 || (lse & ~dd->ipath_link_speed_supported)) + goto err; + set_link_speed_enabled(dd, lse); + } + + /* Set link down default state. */ + switch (pip->portphysstate_linkdown & 0xF) { + case 0: /* NOP */ + break; + case 1: /* SLEEP */ + if (set_linkdowndefaultstate(dd, 1)) + goto err; + break; + case 2: /* POLL */ + if (set_linkdowndefaultstate(dd, 0)) + goto err; + break; + default: + goto err; + } + + dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6; + dev->vl_high_limit = pip->vl_high_limit; + + switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) { + case IB_MTU_256: + mtu = 256; + break; + case IB_MTU_512: + mtu = 512; + break; + case IB_MTU_1024: + mtu = 1024; + break; + case IB_MTU_2048: + mtu = 2048; + break; + case IB_MTU_4096: + if (!ipath_mtu4096) + goto err; + mtu = 4096; + break; + default: + /* XXX We have already partially updated our state! */ + goto err; + } + ipath_set_mtu(dd, mtu); + + dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF; + + /* We only support VL0 */ + if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1) + goto err; + + if (pip->mkey_violations == 0) + dev->mkey_violations = 0; + + /* + * Hardware counter can't be reset so snapshot and subtract + * later. + */ + if (pip->pkey_violations == 0) + dev->z_pkey_violations = ipath_get_cr_errpkey(dd); + + if (pip->qkey_violations == 0) + dev->qkey_violations = 0; + + ore = pip->localphyerrors_overrunerrors; + if (set_phyerrthreshold(dd, (ore >> 4) & 0xF)) + goto err; + + if (set_overrunthreshold(dd, (ore & 0xF))) + goto err; + + dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; + + if (pip->clientrereg_resv_subnetto & 0x80) { + clientrereg = 1; + event.event = IB_EVENT_CLIENT_REREGISTER; + ib_dispatch_event(&event); + } + + /* + * Do the port state change now that the other link parameters + * have been set. + * Changing the port physical state only makes sense if the link + * is down or is being set to down. + */ + state = pip->linkspeed_portstate & 0xF; + lstate = (pip->portphysstate_linkdown >> 4) & 0xF; + if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) + goto err; + + /* + * Only state changes of DOWN, ARM, and ACTIVE are valid + * and must be in the correct state to take effect (see 7.2.6). + */ + switch (state) { + case IB_PORT_NOP: + if (lstate == 0) + break; + /* FALLTHROUGH */ + case IB_PORT_DOWN: + if (lstate == 0) + lstate = IPATH_IB_LINKDOWN_ONLY; + else if (lstate == 1) + lstate = IPATH_IB_LINKDOWN_SLEEP; + else if (lstate == 2) + lstate = IPATH_IB_LINKDOWN; + else if (lstate == 3) + lstate = IPATH_IB_LINKDOWN_DISABLE; + else + goto err; + ipath_set_linkstate(dd, lstate); + if (lstate == IPATH_IB_LINKDOWN_DISABLE) { + ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + goto done; + } + ipath_wait_linkstate(dd, IPATH_LINKINIT | IPATH_LINKARMED | + IPATH_LINKACTIVE, 1000); + break; + case IB_PORT_ARMED: + ipath_set_linkstate(dd, IPATH_IB_LINKARM); + break; + case IB_PORT_ACTIVE: + ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE); + break; + default: + /* XXX We have already partially updated our state! */ + goto err; + } + + ret = recv_subn_get_portinfo(smp, ibdev, port); + + if (clientrereg) + pip->clientrereg_resv_subnetto |= 0x80; + + goto done; + +err: + smp->status |= IB_SMP_INVALID_FIELD; + ret = recv_subn_get_portinfo(smp, ibdev, port); + +done: + return ret; +} + +/** + * rm_pkey - decrecment the reference count for the given PKEY + * @dd: the infinipath device + * @key: the PKEY index + * + * Return true if this was the last reference and the hardware table entry + * needs to be changed. + */ +static int rm_pkey(struct ipath_devdata *dd, u16 key) +{ + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (dd->ipath_pkeys[i] != key) + continue; + if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) { + dd->ipath_pkeys[i] = 0; + ret = 1; + goto bail; + } + break; + } + + ret = 0; + +bail: + return ret; +} + +/** + * add_pkey - add the given PKEY to the hardware table + * @dd: the infinipath device + * @key: the PKEY + * + * Return an error code if unable to add the entry, zero if no change, + * or 1 if the hardware PKEY register needs to be updated. + */ +static int add_pkey(struct ipath_devdata *dd, u16 key) +{ + int i; + u16 lkey = key & 0x7FFF; + int any = 0; + int ret; + + if (lkey == 0x7FFF) { + ret = 0; + goto bail; + } + + /* Look for an empty slot or a matching PKEY. */ + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (!dd->ipath_pkeys[i]) { + any++; + continue; + } + /* If it matches exactly, try to increment the ref count */ + if (dd->ipath_pkeys[i] == key) { + if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) { + ret = 0; + goto bail; + } + /* Lost the race. Look for an empty slot below. */ + atomic_dec(&dd->ipath_pkeyrefs[i]); + any++; + } + /* + * It makes no sense to have both the limited and unlimited + * PKEY set at the same time since the unlimited one will + * disable the limited one. + */ + if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { + ret = -EEXIST; + goto bail; + } + } + if (!any) { + ret = -EBUSY; + goto bail; + } + for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { + if (!dd->ipath_pkeys[i] && + atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { + /* for ipathstats, etc. */ + ipath_stats.sps_pkeys[i] = lkey; + dd->ipath_pkeys[i] = key; + ret = 1; + goto bail; + } + } + ret = -EBUSY; + +bail: + return ret; +} + +/** + * set_pkeys - set the PKEY table for port 0 + * @dd: the infinipath device + * @pkeys: the PKEY table + */ +static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys, u8 port) +{ + struct ipath_portdata *pd; + int i; + int changed = 0; + + /* always a kernel port, no locking needed */ + pd = dd->ipath_pd[0]; + + for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { + u16 key = pkeys[i]; + u16 okey = pd->port_pkeys[i]; + + if (key == okey) + continue; + /* + * The value of this PKEY table entry is changing. + * Remove the old entry in the hardware's array of PKEYs. + */ + if (okey & 0x7FFF) + changed |= rm_pkey(dd, okey); + if (key & 0x7FFF) { + int ret = add_pkey(dd, key); + + if (ret < 0) + key = 0; + else + changed |= ret; + } + pd->port_pkeys[i] = key; + } + if (changed) { + u64 pkey; + struct ib_event event; + + pkey = (u64) dd->ipath_pkeys[0] | + ((u64) dd->ipath_pkeys[1] << 16) | + ((u64) dd->ipath_pkeys[2] << 32) | + ((u64) dd->ipath_pkeys[3] << 48); + ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n", + (unsigned long long) pkey); + ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, + pkey); + + event.event = IB_EVENT_PKEY_CHANGE; + event.device = &dd->verbs_dev->ibdev; + event.element.port_num = port; + ib_dispatch_event(&event); + } + return 0; +} + +static int recv_subn_set_pkeytable(struct ib_smp *smp, + struct ib_device *ibdev, u8 port) +{ + u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); + __be16 *p = (__be16 *) smp->data; + u16 *q = (u16 *) smp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + unsigned i, n = ipath_get_npkeys(dev->dd); + + for (i = 0; i < n; i++) + q[i] = be16_to_cpu(p[i]); + + if (startpx != 0 || set_pkeys(dev->dd, q, port) != 0) + smp->status |= IB_SMP_INVALID_FIELD; + + return recv_subn_get_pkeytable(smp, ibdev); +} + +static int recv_pma_get_classportinfo(struct ib_pma_mad *pmp) +{ + struct ib_class_port_info *p = + (struct ib_class_port_info *)pmp->data; + + memset(pmp->data, 0, sizeof(pmp->data)); + + if (pmp->mad_hdr.attr_mod != 0) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + /* Indicate AllPortSelect is valid (only one port anyway) */ + p->capability_mask = cpu_to_be16(1 << 8); + p->base_version = 1; + p->class_version = 1; + /* + * Expected response time is 4.096 usec. * 2^18 == 1.073741824 + * sec. + */ + p->resp_time_value = 18; + + return reply((struct ib_smp *) pmp); +} + +/* + * The PortSamplesControl.CounterMasks field is an array of 3 bit fields + * which specify the N'th counter's capabilities. See ch. 16.1.3.2. + * We support 5 counters which only count the mandatory quantities. + */ +#define COUNTER_MASK(q, n) (q << ((9 - n) * 3)) +#define COUNTER_MASK0_9 cpu_to_be32(COUNTER_MASK(1, 0) | \ + COUNTER_MASK(1, 1) | \ + COUNTER_MASK(1, 2) | \ + COUNTER_MASK(1, 3) | \ + COUNTER_MASK(1, 4)) + +static int recv_pma_get_portsamplescontrol(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplescontrol *p = + (struct ib_pma_portsamplescontrol *)pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + unsigned long flags; + u8 port_select = p->port_select; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || + (port_select != port && port_select != 0xFF)) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + /* + * Ticks are 10x the link transfer period which for 2.5Gbs is 4 + * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample + * intervals are counted in ticks. Since we use Linux timers, that + * count in jiffies, we can't sample for less than 1000 ticks if HZ + * == 1000 (4000 ticks if HZ is 250). link_speed_active returns 2 for + * DDR, 1 for SDR, set the tick to 1 for DDR, 0 for SDR on chips that + * have hardware support for delaying packets. + */ + if (crp->cr_psstat) + p->tick = dev->dd->ipath_link_speed_active - 1; + else + p->tick = 250; /* 1 usec. */ + p->counter_width = 4; /* 32 bit counters */ + p->counter_mask0_9 = COUNTER_MASK0_9; + spin_lock_irqsave(&dev->pending_lock, flags); + if (crp->cr_psstat) + p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + p->sample_status = dev->pma_sample_status; + p->sample_start = cpu_to_be32(dev->pma_sample_start); + p->sample_interval = cpu_to_be32(dev->pma_sample_interval); + p->tag = cpu_to_be16(dev->pma_tag); + p->counter_select[0] = dev->pma_counter_select[0]; + p->counter_select[1] = dev->pma_counter_select[1]; + p->counter_select[2] = dev->pma_counter_select[2]; + p->counter_select[3] = dev->pma_counter_select[3]; + p->counter_select[4] = dev->pma_counter_select[4]; + spin_unlock_irqrestore(&dev->pending_lock, flags); + + return reply((struct ib_smp *) pmp); +} + +static int recv_pma_set_portsamplescontrol(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portsamplescontrol *p = + (struct ib_pma_portsamplescontrol *)pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + unsigned long flags; + u8 status; + int ret; + + if (pmp->mad_hdr.attr_mod != 0 || + (p->port_select != port && p->port_select != 0xFF)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + spin_lock_irqsave(&dev->pending_lock, flags); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + if (status == IB_PMA_SAMPLE_STATUS_DONE) { + dev->pma_sample_start = be32_to_cpu(p->sample_start); + dev->pma_sample_interval = be32_to_cpu(p->sample_interval); + dev->pma_tag = be16_to_cpu(p->tag); + dev->pma_counter_select[0] = p->counter_select[0]; + dev->pma_counter_select[1] = p->counter_select[1]; + dev->pma_counter_select[2] = p->counter_select[2]; + dev->pma_counter_select[3] = p->counter_select[3]; + dev->pma_counter_select[4] = p->counter_select[4]; + if (crp->cr_psstat) { + ipath_write_creg(dev->dd, crp->cr_psinterval, + dev->pma_sample_interval); + ipath_write_creg(dev->dd, crp->cr_psstart, + dev->pma_sample_start); + } else + dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED; + } + spin_unlock_irqrestore(&dev->pending_lock, flags); + + ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port); + +bail: + return ret; +} + +static u64 get_counter(struct ipath_ibdev *dev, + struct ipath_cregs const *crp, + __be16 sel) +{ + u64 ret; + + switch (sel) { + case IB_PMA_PORT_XMIT_DATA: + ret = (crp->cr_psxmitdatacount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) : + dev->ipath_sword; + break; + case IB_PMA_PORT_RCV_DATA: + ret = (crp->cr_psrcvdatacount) ? + ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) : + dev->ipath_rword; + break; + case IB_PMA_PORT_XMIT_PKTS: + ret = (crp->cr_psxmitpktscount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) : + dev->ipath_spkts; + break; + case IB_PMA_PORT_RCV_PKTS: + ret = (crp->cr_psrcvpktscount) ? + ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) : + dev->ipath_rpkts; + break; + case IB_PMA_PORT_XMIT_WAIT: + ret = (crp->cr_psxmitwaitcount) ? + ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) : + dev->ipath_xmit_wait; + break; + default: + ret = 0; + } + + return ret; +} + +static int recv_pma_get_portsamplesresult(struct ib_pma_mad *pmp, + struct ib_device *ibdev) +{ + struct ib_pma_portsamplesresult *p = + (struct ib_pma_portsamplesresult *)pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + u8 status; + int i; + + memset(pmp->data, 0, sizeof(pmp->data)); + p->tag = cpu_to_be16(dev->pma_tag); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + p->sample_status = cpu_to_be16(status); + for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) + p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : + cpu_to_be32( + get_counter(dev, crp, dev->pma_counter_select[i])); + + return reply((struct ib_smp *) pmp); +} + +static int recv_pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev) +{ + struct ib_pma_portsamplesresult_ext *p = + (struct ib_pma_portsamplesresult_ext *)pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_cregs const *crp = dev->dd->ipath_cregs; + u8 status; + int i; + + memset(pmp->data, 0, sizeof(pmp->data)); + p->tag = cpu_to_be16(dev->pma_tag); + if (crp->cr_psstat) + status = ipath_read_creg32(dev->dd, crp->cr_psstat); + else + status = dev->pma_sample_status; + p->sample_status = cpu_to_be16(status); + /* 64 bits */ + p->extended_width = cpu_to_be32(0x80000000); + for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) + p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : + cpu_to_be64( + get_counter(dev, crp, dev->pma_counter_select[i])); + + return reply((struct ib_smp *) pmp); +} + +static int recv_pma_get_portcounters(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_verbs_counters cntrs; + u8 port_select = p->port_select; + + ipath_get_counters(dev->dd, &cntrs); + + /* Adjust counters for any resets done. */ + cntrs.symbol_error_counter -= dev->z_symbol_error_counter; + cntrs.link_error_recovery_counter -= + dev->z_link_error_recovery_counter; + cntrs.link_downed_counter -= dev->z_link_downed_counter; + cntrs.port_rcv_errors += dev->rcv_errors; + cntrs.port_rcv_errors -= dev->z_port_rcv_errors; + cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors; + cntrs.port_xmit_discards -= dev->z_port_xmit_discards; + cntrs.port_xmit_data -= dev->z_port_xmit_data; + cntrs.port_rcv_data -= dev->z_port_rcv_data; + cntrs.port_xmit_packets -= dev->z_port_xmit_packets; + cntrs.port_rcv_packets -= dev->z_port_rcv_packets; + cntrs.local_link_integrity_errors -= + dev->z_local_link_integrity_errors; + cntrs.excessive_buffer_overrun_errors -= + dev->z_excessive_buffer_overrun_errors; + cntrs.vl15_dropped -= dev->z_vl15_dropped; + cntrs.vl15_dropped += dev->n_vl15_dropped; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || + (port_select != port && port_select != 0xFF)) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + if (cntrs.symbol_error_counter > 0xFFFFUL) + p->symbol_error_counter = cpu_to_be16(0xFFFF); + else + p->symbol_error_counter = + cpu_to_be16((u16)cntrs.symbol_error_counter); + if (cntrs.link_error_recovery_counter > 0xFFUL) + p->link_error_recovery_counter = 0xFF; + else + p->link_error_recovery_counter = + (u8)cntrs.link_error_recovery_counter; + if (cntrs.link_downed_counter > 0xFFUL) + p->link_downed_counter = 0xFF; + else + p->link_downed_counter = (u8)cntrs.link_downed_counter; + if (cntrs.port_rcv_errors > 0xFFFFUL) + p->port_rcv_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_errors = + cpu_to_be16((u16) cntrs.port_rcv_errors); + if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) + p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); + else + p->port_rcv_remphys_errors = + cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); + if (cntrs.port_xmit_discards > 0xFFFFUL) + p->port_xmit_discards = cpu_to_be16(0xFFFF); + else + p->port_xmit_discards = + cpu_to_be16((u16)cntrs.port_xmit_discards); + if (cntrs.local_link_integrity_errors > 0xFUL) + cntrs.local_link_integrity_errors = 0xFUL; + if (cntrs.excessive_buffer_overrun_errors > 0xFUL) + cntrs.excessive_buffer_overrun_errors = 0xFUL; + p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | + cntrs.excessive_buffer_overrun_errors; + if (cntrs.vl15_dropped > 0xFFFFUL) + p->vl15_dropped = cpu_to_be16(0xFFFF); + else + p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); + if (cntrs.port_xmit_data > 0xFFFFFFFFUL) + p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); + else + p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); + if (cntrs.port_rcv_data > 0xFFFFFFFFUL) + p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); + else + p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); + if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) + p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); + else + p->port_xmit_packets = + cpu_to_be32((u32)cntrs.port_xmit_packets); + if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) + p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); + else + p->port_rcv_packets = + cpu_to_be32((u32) cntrs.port_rcv_packets); + + return reply((struct ib_smp *) pmp); +} + +static int recv_pma_get_portcounters_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters_ext *p = + (struct ib_pma_portcounters_ext *)pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + u64 swords, rwords, spkts, rpkts, xwait; + u8 port_select = p->port_select; + + ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, + &rpkts, &xwait); + + /* Adjust counters for any resets done. */ + swords -= dev->z_port_xmit_data; + rwords -= dev->z_port_rcv_data; + spkts -= dev->z_port_xmit_packets; + rpkts -= dev->z_port_rcv_packets; + + memset(pmp->data, 0, sizeof(pmp->data)); + + p->port_select = port_select; + if (pmp->mad_hdr.attr_mod != 0 || + (port_select != port && port_select != 0xFF)) + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + + p->port_xmit_data = cpu_to_be64(swords); + p->port_rcv_data = cpu_to_be64(rwords); + p->port_xmit_packets = cpu_to_be64(spkts); + p->port_rcv_packets = cpu_to_be64(rpkts); + p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit); + p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv); + p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit); + p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv); + + return reply((struct ib_smp *) pmp); +} + +static int recv_pma_set_portcounters(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + struct ipath_verbs_counters cntrs; + + /* + * Since the HW doesn't support clearing counters, we save the + * current count and subtract it from future responses. + */ + ipath_get_counters(dev->dd, &cntrs); + + if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) + dev->z_symbol_error_counter = cntrs.symbol_error_counter; + + if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) + dev->z_link_error_recovery_counter = + cntrs.link_error_recovery_counter; + + if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) + dev->z_link_downed_counter = cntrs.link_downed_counter; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) + dev->z_port_rcv_errors = + cntrs.port_rcv_errors + dev->rcv_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) + dev->z_port_rcv_remphys_errors = + cntrs.port_rcv_remphys_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) + dev->z_port_xmit_discards = cntrs.port_xmit_discards; + + if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) + dev->z_local_link_integrity_errors = + cntrs.local_link_integrity_errors; + + if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) + dev->z_excessive_buffer_overrun_errors = + cntrs.excessive_buffer_overrun_errors; + + if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { + dev->n_vl15_dropped = 0; + dev->z_vl15_dropped = cntrs.vl15_dropped; + } + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) + dev->z_port_xmit_data = cntrs.port_xmit_data; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) + dev->z_port_rcv_data = cntrs.port_rcv_data; + + if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) + dev->z_port_xmit_packets = cntrs.port_xmit_packets; + + if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) + dev->z_port_rcv_packets = cntrs.port_rcv_packets; + + return recv_pma_get_portcounters(pmp, ibdev, port); +} + +static int recv_pma_set_portcounters_ext(struct ib_pma_mad *pmp, + struct ib_device *ibdev, u8 port) +{ + struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) + pmp->data; + struct ipath_ibdev *dev = to_idev(ibdev); + u64 swords, rwords, spkts, rpkts, xwait; + + ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, + &rpkts, &xwait); + + if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) + dev->z_port_xmit_data = swords; + + if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) + dev->z_port_rcv_data = rwords; + + if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) + dev->z_port_xmit_packets = spkts; + + if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) + dev->z_port_rcv_packets = rpkts; + + if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) + dev->n_unicast_xmit = 0; + + if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) + dev->n_unicast_rcv = 0; + + if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) + dev->n_multicast_xmit = 0; + + if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) + dev->n_multicast_rcv = 0; + + return recv_pma_get_portcounters_ext(pmp, ibdev, port); +} + +static int process_subn(struct ib_device *ibdev, int mad_flags, + u8 port_num, const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_smp *smp = (struct ib_smp *)out_mad; + struct ipath_ibdev *dev = to_idev(ibdev); + int ret; + + *out_mad = *in_mad; + if (smp->class_version != 1) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply(smp); + goto bail; + } + + /* Is the mkey in the process of expiring? */ + if (dev->mkey_lease_timeout && + time_after_eq(jiffies, dev->mkey_lease_timeout)) { + /* Clear timeout and mkey protection field. */ + dev->mkey_lease_timeout = 0; + dev->mkeyprot = 0; + } + + /* + * M_Key checking depends on + * Portinfo:M_Key_protect_bits + */ + if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 && + dev->mkey != smp->mkey && + (smp->method == IB_MGMT_METHOD_SET || + (smp->method == IB_MGMT_METHOD_GET && + dev->mkeyprot >= 2))) { + if (dev->mkey_violations != 0xFFFF) + ++dev->mkey_violations; + if (dev->mkey_lease_timeout || + dev->mkey_lease_period == 0) { + ret = IB_MAD_RESULT_SUCCESS | + IB_MAD_RESULT_CONSUMED; + goto bail; + } + dev->mkey_lease_timeout = jiffies + + dev->mkey_lease_period * HZ; + /* Future: Generate a trap notice. */ + ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + goto bail; + } else if (dev->mkey_lease_timeout) + dev->mkey_lease_timeout = 0; + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (smp->attr_id) { + case IB_SMP_ATTR_NODE_DESC: + ret = recv_subn_get_nodedescription(smp, ibdev); + goto bail; + case IB_SMP_ATTR_NODE_INFO: + ret = recv_subn_get_nodeinfo(smp, ibdev, port_num); + goto bail; + case IB_SMP_ATTR_GUID_INFO: + ret = recv_subn_get_guidinfo(smp, ibdev); + goto bail; + case IB_SMP_ATTR_PORT_INFO: + ret = recv_subn_get_portinfo(smp, ibdev, port_num); + goto bail; + case IB_SMP_ATTR_PKEY_TABLE: + ret = recv_subn_get_pkeytable(smp, ibdev); + goto bail; + case IB_SMP_ATTR_SM_INFO: + if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { + ret = IB_MAD_RESULT_SUCCESS | + IB_MAD_RESULT_CONSUMED; + goto bail; + } + if (dev->port_cap_flags & IB_PORT_SM) { + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + } + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply(smp); + goto bail; + } + + case IB_MGMT_METHOD_SET: + switch (smp->attr_id) { + case IB_SMP_ATTR_GUID_INFO: + ret = recv_subn_set_guidinfo(smp, ibdev); + goto bail; + case IB_SMP_ATTR_PORT_INFO: + ret = recv_subn_set_portinfo(smp, ibdev, port_num); + goto bail; + case IB_SMP_ATTR_PKEY_TABLE: + ret = recv_subn_set_pkeytable(smp, ibdev, port_num); + goto bail; + case IB_SMP_ATTR_SM_INFO: + if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { + ret = IB_MAD_RESULT_SUCCESS | + IB_MAD_RESULT_CONSUMED; + goto bail; + } + if (dev->port_cap_flags & IB_PORT_SM) { + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + } + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply(smp); + goto bail; + } + + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_REPORT: + case IB_MGMT_METHOD_REPORT_RESP: + case IB_MGMT_METHOD_TRAP_REPRESS: + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + default: + smp->status |= IB_SMP_UNSUP_METHOD; + ret = reply(smp); + } + +bail: + return ret; +} + +static int process_perf(struct ib_device *ibdev, u8 port_num, + const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; + int ret; + + *out_mad = *in_mad; + if (pmp->mad_hdr.class_version != 1) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + switch (pmp->mad_hdr.method) { + case IB_MGMT_METHOD_GET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_CLASS_PORT_INFO: + ret = recv_pma_get_classportinfo(pmp); + goto bail; + case IB_PMA_PORT_SAMPLES_CONTROL: + ret = recv_pma_get_portsamplescontrol(pmp, ibdev, + port_num); + goto bail; + case IB_PMA_PORT_SAMPLES_RESULT: + ret = recv_pma_get_portsamplesresult(pmp, ibdev); + goto bail; + case IB_PMA_PORT_SAMPLES_RESULT_EXT: + ret = recv_pma_get_portsamplesresult_ext(pmp, + ibdev); + goto bail; + case IB_PMA_PORT_COUNTERS: + ret = recv_pma_get_portcounters(pmp, ibdev, + port_num); + goto bail; + case IB_PMA_PORT_COUNTERS_EXT: + ret = recv_pma_get_portcounters_ext(pmp, ibdev, + port_num); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + case IB_MGMT_METHOD_SET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_PORT_SAMPLES_CONTROL: + ret = recv_pma_set_portsamplescontrol(pmp, ibdev, + port_num); + goto bail; + case IB_PMA_PORT_COUNTERS: + ret = recv_pma_set_portcounters(pmp, ibdev, + port_num); + goto bail; + case IB_PMA_PORT_COUNTERS_EXT: + ret = recv_pma_set_portcounters_ext(pmp, ibdev, + port_num); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_smp *) pmp); + goto bail; + } + + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_smp *) pmp); + } + +bail: + return ret; +} + +/** + * ipath_process_mad - process an incoming MAD packet + * @ibdev: the infiniband device this packet came in on + * @mad_flags: MAD flags + * @port_num: the port number this packet came in on + * @in_wc: the work completion entry for this packet + * @in_grh: the global route header for this packet + * @in_mad: the incoming MAD + * @out_mad: any outgoing MAD reply + * + * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not + * interested in processing. + * + * Note that the verbs framework has already done the MAD sanity checks, + * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE + * MADs. + * + * This is called by the ib_mad module. + */ +int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad_hdr *in, size_t in_mad_size, + struct ib_mad_hdr *out, size_t *out_mad_size, + u16 *out_mad_pkey_index) +{ + int ret; + const struct ib_mad *in_mad = (const struct ib_mad *)in; + struct ib_mad *out_mad = (struct ib_mad *)out; + + if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || + *out_mad_size != sizeof(*out_mad))) + return IB_MAD_RESULT_FAILURE; + + switch (in_mad->mad_hdr.mgmt_class) { + case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: + case IB_MGMT_CLASS_SUBN_LID_ROUTED: + ret = process_subn(ibdev, mad_flags, port_num, + in_mad, out_mad); + goto bail; + case IB_MGMT_CLASS_PERF_MGMT: + ret = process_perf(ibdev, port_num, in_mad, out_mad); + goto bail; + default: + ret = IB_MAD_RESULT_SUCCESS; + } + +bail: + return ret; +} |