/* * Copyright (c) 2006, 2007, 2008, 2009, 2010 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 #include "qib.h" #include "qib_mad.h" 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 void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len) { struct ib_mad_send_buf *send_buf; struct ib_mad_agent *agent; struct ib_smp *smp; int ret; unsigned long flags; unsigned long timeout; agent = ibp->send_agent; if (!agent) return; /* o14-3.2.1 */ if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE)) return; /* o14-2 */ if (ibp->trap_timeout && time_before(jiffies, ibp->trap_timeout)) return; send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, GFP_ATOMIC); if (IS_ERR(send_buf)) return; smp = send_buf->mad; smp->base_version = IB_MGMT_BASE_VERSION; smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; smp->class_version = 1; smp->method = IB_MGMT_METHOD_TRAP; ibp->tid++; smp->tid = cpu_to_be64(ibp->tid); smp->attr_id = IB_SMP_ATTR_NOTICE; /* o14-1: smp->mkey = 0; */ memcpy(smp->data, data, len); spin_lock_irqsave(&ibp->lock, flags); if (!ibp->sm_ah) { if (ibp->sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) { struct ib_ah *ah; struct ib_ah_attr attr; memset(&attr, 0, sizeof attr); attr.dlid = ibp->sm_lid; attr.port_num = ppd_from_ibp(ibp)->port; ah = ib_create_ah(ibp->qp0->ibqp.pd, &attr); if (IS_ERR(ah)) ret = -EINVAL; else { send_buf->ah = ah; ibp->sm_ah = to_iah(ah); ret = 0; } } else ret = -EINVAL; } else { send_buf->ah = &ibp->sm_ah->ibah; ret = 0; } spin_unlock_irqrestore(&ibp->lock, flags); if (!ret) ret = ib_post_send_mad(send_buf, NULL); if (!ret) { /* 4.096 usec. */ timeout = (4096 * (1UL << ibp->subnet_timeout)) / 1000; ibp->trap_timeout = jiffies + usecs_to_jiffies(timeout); } else { ib_free_send_mad(send_buf); ibp->trap_timeout = 0; } } /* * Send a bad [PQ]_Key trap (ch. 14.3.8). */ void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, u32 qp1, u32 qp2, __be16 lid1, __be16 lid2) { struct ib_mad_notice_attr data; if (trap_num == IB_NOTICE_TRAP_BAD_PKEY) ibp->pkey_violations++; else ibp->qkey_violations++; ibp->n_pkt_drops++; /* Send violation trap */ data.generic_type = IB_NOTICE_TYPE_SECURITY; data.prod_type_msb = 0; data.prod_type_lsb = IB_NOTICE_PROD_CA; data.trap_num = trap_num; data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); data.toggle_count = 0; memset(&data.details, 0, sizeof data.details); data.details.ntc_257_258.lid1 = lid1; data.details.ntc_257_258.lid2 = lid2; data.details.ntc_257_258.key = cpu_to_be32(key); data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1); data.details.ntc_257_258.qp2 = cpu_to_be32(qp2); qib_send_trap(ibp, &data, sizeof data); } /* * Send a bad M_Key trap (ch. 14.3.9). */ static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp) { struct ib_mad_notice_attr data; /* Send violation trap */ data.generic_type = IB_NOTICE_TYPE_SECURITY; data.prod_type_msb = 0; data.prod_type_lsb = IB_NOTICE_PROD_CA; data.trap_num = IB_NOTICE_TRAP_BAD_MKEY; data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); data.toggle_count = 0; memset(&data.details, 0, sizeof data.details); data.details.ntc_256.lid = data.issuer_lid; data.details.ntc_256.method = smp->method; data.details.ntc_256.attr_id = smp->attr_id; data.details.ntc_256.attr_mod = smp->attr_mod; data.details.ntc_256.mkey = smp->mkey; if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { u8 hop_cnt; data.details.ntc_256.dr_slid = smp->dr_slid; data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE; hop_cnt = smp->hop_cnt; if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) { data.details.ntc_256.dr_trunc_hop |= IB_NOTICE_TRAP_DR_TRUNC; hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path); } data.details.ntc_256.dr_trunc_hop |= hop_cnt; memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path, hop_cnt); } qib_send_trap(ibp, &data, sizeof data); } /* * Send a Port Capability Mask Changed trap (ch. 14.3.11). */ void qib_cap_mask_chg(struct qib_ibport *ibp) { struct ib_mad_notice_attr data; data.generic_type = IB_NOTICE_TYPE_INFO; data.prod_type_msb = 0; data.prod_type_lsb = IB_NOTICE_PROD_CA; data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); data.toggle_count = 0; memset(&data.details, 0, sizeof data.details); data.details.ntc_144.lid = data.issuer_lid; data.details.ntc_144.new_cap_mask = cpu_to_be32(ibp->port_cap_flags); qib_send_trap(ibp, &data, sizeof data); } /* * Send a System Image GUID Changed trap (ch. 14.3.12). */ void qib_sys_guid_chg(struct qib_ibport *ibp) { struct ib_mad_notice_attr data; data.generic_type = IB_NOTICE_TYPE_INFO; data.prod_type_msb = 0; data.prod_type_lsb = IB_NOTICE_PROD_CA; data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG; data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); data.toggle_count = 0; memset(&data.details, 0, sizeof data.details); data.details.ntc_145.lid = data.issuer_lid; data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid; qib_send_trap(ibp, &data, sizeof data); } /* * Send a Node Description Changed trap (ch. 14.3.13). */ void qib_node_desc_chg(struct qib_ibport *ibp) { struct ib_mad_notice_attr data; data.generic_type = IB_NOTICE_TYPE_INFO; data.prod_type_msb = 0; data.prod_type_lsb = IB_NOTICE_PROD_CA; data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); data.toggle_count = 0; memset(&data.details, 0, sizeof data.details); data.details.ntc_144.lid = data.issuer_lid; data.details.ntc_144.local_changes = 1; data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG; qib_send_trap(ibp, &data, sizeof data); } static int 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); } static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct ib_node_info *nip = (struct ib_node_info *)&smp->data; struct qib_devdata *dd = dd_from_ibdev(ibdev); u32 vendor, majrev, minrev; unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ /* GUID 0 is illegal */ if (smp->attr_mod || pidx >= dd->num_pports || dd->pport[pidx].guid == 0) smp->status |= IB_SMP_INVALID_FIELD; else nip->port_guid = dd->pport[pidx].guid; nip->base_version = 1; nip->class_version = 1; nip->node_type = 1; /* channel adapter */ nip->num_ports = ibdev->phys_port_cnt; /* This is already in network order */ nip->sys_guid = ib_qib_sys_image_guid; nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */ nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd)); nip->device_id = cpu_to_be16(dd->deviceid); majrev = dd->majrev; minrev = dd->minrev; nip->revision = cpu_to_be32((majrev << 16) | minrev); nip->local_port_num = port; vendor = dd->vendorid; nip->vendor_id[0] = QIB_SRC_OUI_1; nip->vendor_id[1] = QIB_SRC_OUI_2; nip->vendor_id[2] = QIB_SRC_OUI_3; return reply(smp); } static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct qib_devdata *dd = dd_from_ibdev(ibdev); u32 startgx = 8 * be32_to_cpu(smp->attr_mod); __be64 *p = (__be64 *) smp->data; unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ /* 32 blocks of 8 64-bit GUIDs per block */ memset(smp->data, 0, sizeof(smp->data)); if (startgx == 0 && pidx < dd->num_pports) { struct qib_pportdata *ppd = dd->pport + pidx; struct qib_ibport *ibp = &ppd->ibport_data; __be64 g = ppd->guid; unsigned i; /* GUID 0 is illegal */ if (g == 0) smp->status |= IB_SMP_INVALID_FIELD; else { /* The first is a copy of the read-only HW GUID. */ p[0] = g; for (i = 1; i < QIB_GUIDS_PER_PORT; i++) p[i] = ibp->guids[i - 1]; } } else smp->status |= IB_SMP_INVALID_FIELD; return reply(smp); } static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w) { (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w); } static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s) { (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s); } static int get_overrunthreshold(struct qib_pportdata *ppd) { return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH); } /** * set_overrunthreshold - set the overrun threshold * @ppd: the physical port data * @n: the new threshold * * Note that this will only take effect when the link state changes. */ static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n) { (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH, (u32)n); return 0; } static int get_phyerrthreshold(struct qib_pportdata *ppd) { return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH); } /** * set_phyerrthreshold - set the physical error threshold * @ppd: the physical port data * @n: the new threshold * * Note that this will only take effect when the link state changes. */ static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n) { (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH, (u32)n); return 0; } /** * get_linkdowndefaultstate - get the default linkdown state * @ppd: the physical port data * * Returns zero if the default is POLL, 1 if the default is SLEEP. */ static int get_linkdowndefaultstate(struct qib_pportdata *ppd) { return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) == IB_LINKINITCMD_SLEEP; } static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags) { int ret = 0; /* Is the mkey in the process of expiring? */ if (ibp->mkey_lease_timeout && time_after_eq(jiffies, ibp->mkey_lease_timeout)) { /* Clear timeout and mkey protection field. */ ibp->mkey_lease_timeout = 0; ibp->mkeyprot = 0; } /* M_Key checking depends on Portinfo:M_Key_protect_bits */ if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && ibp->mkey != 0 && ibp->mkey != smp->mkey && (smp->method == IB_MGMT_METHOD_SET || smp->method == IB_MGMT_METHOD_TRAP_REPRESS || (smp->method == IB_MGMT_METHOD_GET && ibp->mkeyprot >= 2))) { if (ibp->mkey_violations != 0xFFFF) ++ibp->mkey_violations; if (!ibp->mkey_lease_timeout && ibp->mkey_lease_period) ibp->mkey_lease_timeout = jiffies + ibp->mkey_lease_period * HZ; /* Generate a trap notice. */ qib_bad_mkey(ibp, smp); ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; } else if (ibp->mkey_lease_timeout) ibp->mkey_lease_timeout = 0; return ret; } static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct qib_devdata *dd; struct qib_pportdata *ppd; struct qib_ibport *ibp; struct ib_port_info *pip = (struct ib_port_info *)smp->data; u16 lid; u8 mtu; int ret; u32 state; u32 port_num = be32_to_cpu(smp->attr_mod); if (port_num == 0) port_num = port; else { if (port_num > ibdev->phys_port_cnt) { smp->status |= IB_SMP_INVALID_FIELD; ret = reply(smp); goto bail; } if (port_num != port) { ibp = to_iport(ibdev, port_num); ret = check_mkey(ibp, smp, 0); if (ret) goto bail; } } dd = dd_from_ibdev(ibdev); /* IB numbers ports from 1, hdw from 0 */ ppd = dd->pport + (port_num - 1); ibp = &ppd->ibport_data; /* 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 || ibp->mkey == smp->mkey || ibp->mkeyprot == 0) pip->mkey = ibp->mkey; pip->gid_prefix = ibp->gid_prefix; lid = ppd->lid; pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE; pip->sm_lid = cpu_to_be16(ibp->sm_lid); pip->cap_mask = cpu_to_be32(ibp->port_cap_flags); /* pip->diag_code; */ pip->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period); pip->local_port_num = port; pip->link_width_enabled = ppd->link_width_enabled; pip->link_width_supported = ppd->link_width_supported; pip->link_width_active = ppd->link_width_active; state = dd->f_iblink_state(ppd->lastibcstat); pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state; pip->portphysstate_linkdown = (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) | (get_linkdowndefaultstate(ppd) ? 1 : 2); pip->mkeyprot_resv_lmc = (ibp->mkeyprot << 6) | ppd->lmc; pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) | ppd->link_speed_enabled; switch (ppd->ibmtu) { default: /* something is wrong; fall through */ 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; } pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->sm_sl; pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */ pip->vl_high_limit = ibp->vl_high_limit; pip->vl_arb_high_cap = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP); pip->vl_arb_low_cap = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP); /* InitTypeReply = 0 */ pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; /* HCAs ignore VLStallCount and HOQLife */ /* pip->vlstallcnt_hoqlife; */ pip->operationalvl_pei_peo_fpi_fpo = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4; pip->mkey_violations = cpu_to_be16(ibp->mkey_violations); /* P_KeyViolations are counted by hardware. */ pip->pkey_violations = cpu_to_be16(ibp->pkey_violations); pip->qkey_violations = cpu_to_be16(ibp->qkey_violations); /* Only the hardware GUID is supported for now */ pip->guid_cap = QIB_GUIDS_PER_PORT; pip->clientrereg_resv_subnetto = ibp->subnet_timeout; /* 32.768 usec. response time (guessing) */ pip->resv_resptimevalue = 3; pip->localphyerrors_overrunerrors = (get_phyerrthreshold(ppd) << 4) | get_overrunthreshold(ppd); /* pip->max_credit_hint; */ if (ibp->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { u32 v; v = dd->f_get_ib_cfg(ppd, QIB_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 * @dd: the qlogic_ib device * @port: the IB port number * @pkeys: the pkey table is placed here */ static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) { struct qib_pportdata *ppd = dd->pport + port - 1; /* * always a kernel context, no locking needed. * If we get here with ppd setup, no need to check * that pd is valid. */ struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx]; memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys)); return 0; } static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { 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 qib_devdata *dd = dd_from_ibdev(ibdev); unsigned i, n = qib_get_npkeys(dd); get_pkeys(dd, port, 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 subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct qib_devdata *dd = dd_from_ibdev(ibdev); u32 startgx = 8 * be32_to_cpu(smp->attr_mod); __be64 *p = (__be64 *) smp->data; unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ /* 32 blocks of 8 64-bit GUIDs per block */ if (startgx == 0 && pidx < dd->num_pports) { struct qib_pportdata *ppd = dd->pport + pidx; struct qib_ibport *ibp = &ppd->ibport_data; unsigned i; /* The first entry is read-only. */ for (i = 1; i < QIB_GUIDS_PER_PORT; i++) ibp->guids[i - 1] = p[i]; } else smp->status |= IB_SMP_INVALID_FIELD; /* The only GUID we support is the first read-only entry. */ return subn_get_guidinfo(smp, ibdev, port); } /** * 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 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 qib_devdata *dd; struct qib_pportdata *ppd; struct qib_ibport *ibp; char clientrereg = 0; unsigned long flags; u16 lid, smlid; u8 lwe; u8 lse; u8 state; u8 vls; u8 msl; u16 lstate; int ret, ore, mtu; u32 port_num = be32_to_cpu(smp->attr_mod); if (port_num == 0) port_num = port; else { if (port_num > ibdev->phys_port_cnt) goto err; /* Port attributes can only be set on the receiving port */ if (port_num != port) goto get_only; } dd = dd_from_ibdev(ibdev); /* IB numbers ports from 1, hdw from 0 */ ppd = dd->pport + (port_num - 1); ibp = &ppd->ibport_data; event.device = ibdev; event.element.port_num = port; ibp->mkey = pip->mkey; ibp->gid_prefix = pip->gid_prefix; ibp->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); lid = be16_to_cpu(pip->lid); /* Must be a valid unicast LID address. */ if (lid == 0 || lid >= QIB_MULTICAST_LID_BASE) smp->status |= IB_SMP_INVALID_FIELD; else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) { if (ppd->lid != lid) qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT); if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT); qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7); event.event = IB_EVENT_LID_CHANGE; ib_dispatch_event(&event); } smlid = be16_to_cpu(pip->sm_lid); msl = pip->neighbormtu_mastersmsl & 0xF; /* Must be a valid unicast LID address. */ if (smlid == 0 || smlid >= QIB_MULTICAST_LID_BASE) smp->status |= IB_SMP_INVALID_FIELD; else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) { spin_lock_irqsave(&ibp->lock, flags); if (ibp->sm_ah) { if (smlid != ibp->sm_lid) ibp->sm_ah->attr.dlid = smlid; if (msl != ibp->sm_sl) ibp->sm_ah->attr.sl = msl; } spin_unlock_irqrestore(&ibp->lock, flags); if (smlid != ibp->sm_lid) ibp->sm_lid = smlid; if (msl != ibp->sm_sl) ibp->sm_sl = msl; 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 = ppd->link_width_supported; else if (lwe >= 16 || (lwe & ~ppd->link_width_supported)) smp->status |= IB_SMP_INVALID_FIELD; else if (lwe != ppd->link_width_enabled) set_link_width_enabled(ppd, lwe); } lse = pip->linkspeedactive_enabled & 0xF; if (lse) { /* * The IB 1.2 spec. only allows link speed values * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific * speeds. */ if (lse == 15) lse = ppd->link_speed_supported; else if (lse >= 8 || (lse & ~ppd->link_speed_supported)) smp->status |= IB_SMP_INVALID_FIELD; else if (lse != ppd->link_speed_enabled) set_link_speed_enabled(ppd, lse); } /* Set link down default state. */ switch (pip->portphysstate_linkdown & 0xF) { case 0: /* NOP */ break; case 1: /* SLEEP */ (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, IB_LINKINITCMD_SLEEP); break; case 2: /* POLL */ (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, IB_LINKINITCMD_POLL); break; default: smp->status |= IB_SMP_INVALID_FIELD; } ibp->mkeyprot = pip->mkeyprot_resv_lmc >> 6; ibp->vl_high_limit = pip->vl_high_limit; (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT, ibp->vl_high_limit); mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF); if (mtu == -1) smp->status |= IB_SMP_INVALID_FIELD; else qib_set_mtu(ppd, mtu); /* Set operational VLs */ vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF; if (vls) { if (vls > ppd->vls_supported) smp->status |= IB_SMP_INVALID_FIELD; else (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls); } if (pip->mkey_violations == 0) ibp->mkey_violations = 0; if (pip->pkey_violations == 0) ibp->pkey_violations = 0; if (pip->qkey_violations == 0) ibp->qkey_violations = 0; ore = pip->localphyerrors_overrunerrors; if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF)) smp->status |= IB_SMP_INVALID_FIELD; if (set_overrunthreshold(ppd, (ore & 0xF))) smp->status |= IB_SMP_INVALID_FIELD; ibp->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)) smp->status |= IB_SMP_INVALID_FIELD; /* * 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 = QIB_IB_LINKDOWN_ONLY; else if (lstate == 1) lstate = QIB_IB_LINKDOWN_SLEEP; else if (lstate == 2) lstate = QIB_IB_LINKDOWN; else if (lstate == 3) lstate = QIB_IB_LINKDOWN_DISABLE; else { smp->status |= IB_SMP_INVALID_FIELD; break; } spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_LINKV; spin_unlock_irqrestore(&ppd->lflags_lock, flags); qib_set_linkstate(ppd, lstate); /* * Don't send a reply if the response would be sent * through the disabled port. */ if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) { ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; goto done; } qib_wait_linkstate(ppd, QIBL_LINKV, 10); break; case IB_PORT_ARMED: qib_set_linkstate(ppd, QIB_IB_LINKARM); break; case IB_PORT_ACTIVE: qib_set_linkstate(ppd, QIB_IB_LINKACTIVE); break; default: smp->status |= IB_SMP_INVALID_FIELD; } ret = subn_get_portinfo(smp, ibdev, port); if (clientrereg) pip->clientrereg_resv_subnetto |= 0x80; goto done; err: smp->status |= IB_SMP_INVALID_FIELD; get_only: ret = subn_get_portinfo(smp, ibdev, port); done: return ret; } /** * rm_pkey - decrecment the reference count for the given PKEY * @dd: the qlogic_ib 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 qib_pportdata *ppd, u16 key) { int i; int ret; for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { if (ppd->pkeys[i] != key) continue; if (atomic_dec_and_test(&ppd->pkeyrefs[i])) { ppd->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 qlogic_ib 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 qib_pportdata *ppd, 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(ppd->pkeys); i++) { if (!ppd->pkeys[i]) { any++; continue; } /* If it matches exactly, try to increment the ref count */ if (ppd->pkeys[i] == key) { if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) { ret = 0; goto bail; } /* Lost the race. Look for an empty slot below. */ atomic_dec(&ppd->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 ((ppd->pkeys[i] & 0x7FFF) == lkey) { ret = -EEXIST; goto bail; } } if (!any) { ret = -EBUSY; goto bail; } for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { if (!ppd->pkeys[i] && atomic_inc_return(&ppd->pkeyrefs[i]) == 1) { /* for qibstats, etc. */ ppd->pkeys[i] = key; ret = 1; goto bail; } } ret = -EBUSY; bail: return ret; } /** * set_pkeys - set the PKEY table for ctxt 0 * @dd: the qlogic_ib device * @port: the IB port number * @pkeys: the PKEY table */ static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) { struct qib_pportdata *ppd; struct qib_ctxtdata *rcd; int i; int changed = 0; /* * IB port one/two always maps to context zero/one, * always a kernel context, no locking needed * If we get here with ppd setup, no need to check * that rcd is valid. */ ppd = dd->pport + (port - 1); rcd = dd->rcd[ppd->hw_pidx]; for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) { u16 key = pkeys[i]; u16 okey = rcd->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(ppd, okey); if (key & 0x7FFF) { int ret = add_pkey(ppd, key); if (ret < 0) key = 0; else changed |= ret; } rcd->pkeys[i] = key; } if (changed) { struct ib_event event; (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0); event.event = IB_EVENT_PKEY_CHANGE; event.device = &dd->verbs_dev.ibdev; event.element.port_num = 1; ib_dispatch_event(&event); } return 0; } static int 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 qib_devdata *dd = dd_from_ibdev(ibdev); unsigned i, n = qib_get_npkeys(dd); for (i = 0; i < n; i++) q[i] = be16_to_cpu(p[i]); if (startpx != 0 || set_pkeys(dd, port, q) != 0) smp->status |= IB_SMP_INVALID_FIELD; return subn_get_pkeytable(smp, ibdev, port); } static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct qib_ibport *ibp = to_iport(ibdev, port); u8 *p = (u8 *) smp->data; unsigned i; memset(smp->data, 0, sizeof(smp->data)); if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) smp->status |= IB_SMP_UNSUP_METHOD; else for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2) *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1]; return reply(smp); } static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { struct qib_ibport *ibp = to_iport(ibdev, port); u8 *p = (u8 *) smp->data; unsigned i; if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) { smp->status |= IB_SMP_UNSUP_METHOD; return reply(smp); } for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) { ibp->sl_to_vl[i] = *p >> 4; ibp->sl_to_vl[i + 1] = *p & 0xF; } qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)), _QIB_EVENT_SL2VL_CHANGE_BIT); return subn_get_sl_to_vl(smp, ibdev, port); } static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { unsigned which = be32_to_cpu(smp->attr_mod) >> 16; struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); memset(smp->data, 0, sizeof(smp->data)); if (ppd->vls_supported == IB_VL_VL0) smp->status |= IB_SMP_UNSUP_METHOD; else if (which == IB_VLARB_LOWPRI_0_31) (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, smp->data); else if (which == IB_VLARB_HIGHPRI_0_31) (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, smp->data); else smp->status |= IB_SMP_INVALID_FIELD; return reply(smp); } static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { unsigned which = be32_to_cpu(smp->attr_mod) >> 16; struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); if (ppd->vls_supported == IB_VL_VL0) smp->status |= IB_SMP_UNSUP_METHOD; else if (which == IB_VLARB_LOWPRI_0_31) (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, smp->data); else if (which == IB_VLARB_HIGHPRI_0_31) (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, smp->data); else smp->status |= IB_SMP_INVALID_FIELD; return subn_get_vl_arb(smp, ibdev, port); } static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev, u8 port) { /* * For now, we only send the trap once so no need to process this. * o13-6, o13-7, * o14-3.a4 The SMA shall not send any message in response to a valid * SubnTrapRepress() message. */ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; } static int pma_get_classportinfo(struct ib_perf *pmp, struct ib_device *ibdev) { struct ib_pma_classportinfo *p = (struct ib_pma_classportinfo *)pmp->data; struct qib_devdata *dd = dd_from_ibdev(ibdev); memset(pmp->data, 0, sizeof(pmp->data)); if (pmp->attr_mod != 0) pmp->status |= IB_SMP_INVALID_FIELD; /* Note that AllPortSelect is not valid */ p->base_version = 1; p->class_version = 1; p->cap_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; /* * Set the most significant bit of CM2 to indicate support for * congestion statistics */ p->reserved[0] = dd->psxmitwait_supported << 7; /* * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. */ p->resp_time_value = 18; return reply((struct ib_smp *) pmp); } static int pma_get_portsamplescontrol(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portsamplescontrol *p = (struct ib_pma_portsamplescontrol *)pmp->data; struct qib_ibdev *dev = to_idev(ibdev); struct qib_devdata *dd = dd_from_dev(dev); struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); unsigned long flags; u8 port_select = p->port_select; memset(pmp->data, 0, sizeof(pmp->data)); p->port_select = port_select; if (pmp->attr_mod != 0 || port_select != port) { pmp->status |= IB_SMP_INVALID_FIELD; goto bail; } spin_lock_irqsave(&ibp->lock, flags); p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS); p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); p->counter_width = 4; /* 32 bit counters */ p->counter_mask0_9 = COUNTER_MASK0_9; p->sample_start = cpu_to_be32(ibp->pma_sample_start); p->sample_interval = cpu_to_be32(ibp->pma_sample_interval); p->tag = cpu_to_be16(ibp->pma_tag); p->counter_select[0] = ibp->pma_counter_select[0]; p->counter_select[1] = ibp->pma_counter_select[1]; p->counter_select[2] = ibp->pma_counter_select[2]; p->counter_select[3] = ibp->pma_counter_select[3]; p->counter_select[4] = ibp->pma_counter_select[4]; spin_unlock_irqrestore(&ibp->lock, flags); bail: return reply((struct ib_smp *) pmp); } static int pma_set_portsamplescontrol(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portsamplescontrol *p = (struct ib_pma_portsamplescontrol *)pmp->data; struct qib_ibdev *dev = to_idev(ibdev); struct qib_devdata *dd = dd_from_dev(dev); struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); unsigned long flags; u8 status, xmit_flags; int ret; if (pmp->attr_mod != 0 || p->port_select != port) { pmp->status |= IB_SMP_INVALID_FIELD; ret = reply((struct ib_smp *) pmp); goto bail; } spin_lock_irqsave(&ibp->lock, flags); /* Port Sampling code owns the PS* HW counters */ xmit_flags = ppd->cong_stats.flags; ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE; status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); if (status == IB_PMA_SAMPLE_STATUS_DONE || (status == IB_PMA_SAMPLE_STATUS_RUNNING && xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) { ibp->pma_sample_start = be32_to_cpu(p->sample_start); ibp->pma_sample_interval = be32_to_cpu(p->sample_interval); ibp->pma_tag = be16_to_cpu(p->tag); ibp->pma_counter_select[0] = p->counter_select[0]; ibp->pma_counter_select[1] = p->counter_select[1]; ibp->pma_counter_select[2] = p->counter_select[2]; ibp->pma_counter_select[3] = p->counter_select[3]; ibp->pma_counter_select[4] = p->counter_select[4]; dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval, ibp->pma_sample_start); } spin_unlock_irqrestore(&ibp->lock, flags); ret = pma_get_portsamplescontrol(pmp, ibdev, port); bail: return ret; } static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd, __be16 sel) { u64 ret; switch (sel) { case IB_PMA_PORT_XMIT_DATA: ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA); break; case IB_PMA_PORT_RCV_DATA: ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA); break; case IB_PMA_PORT_XMIT_PKTS: ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS); break; case IB_PMA_PORT_RCV_PKTS: ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS); break; case IB_PMA_PORT_XMIT_WAIT: ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT); break; default: ret = 0; } return ret; } /* This function assumes that the xmit_wait lock is already held */ static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd) { u32 delta; delta = get_counter(&ppd->ibport_data, ppd, IB_PMA_PORT_XMIT_WAIT); return ppd->cong_stats.counter + delta; } static void cache_hw_sample_counters(struct qib_pportdata *ppd) { struct qib_ibport *ibp = &ppd->ibport_data; ppd->cong_stats.counter_cache.psxmitdata = get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA); ppd->cong_stats.counter_cache.psrcvdata = get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA); ppd->cong_stats.counter_cache.psxmitpkts = get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS); ppd->cong_stats.counter_cache.psrcvpkts = get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS); ppd->cong_stats.counter_cache.psxmitwait = get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT); } static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd, __be16 sel) { u64 ret; switch (sel) { case IB_PMA_PORT_XMIT_DATA: ret = ppd->cong_stats.counter_cache.psxmitdata; break; case IB_PMA_PORT_RCV_DATA: ret = ppd->cong_stats.counter_cache.psrcvdata; break; case IB_PMA_PORT_XMIT_PKTS: ret = ppd->cong_stats.counter_cache.psxmitpkts; break; case IB_PMA_PORT_RCV_PKTS: ret = ppd->cong_stats.counter_cache.psrcvpkts; break; case IB_PMA_PORT_XMIT_WAIT: ret = ppd->cong_stats.counter_cache.psxmitwait; break; default: ret = 0; } return ret; } static int pma_get_portsamplesresult(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portsamplesresult *p = (struct ib_pma_portsamplesresult *)pmp->data; struct qib_ibdev *dev = to_idev(ibdev); struct qib_devdata *dd = dd_from_dev(dev); struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); unsigned long flags; u8 status; int i; memset(pmp->data, 0, sizeof(pmp->data)); spin_lock_irqsave(&ibp->lock, flags); p->tag = cpu_to_be16(ibp->pma_tag); if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; else { status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); p->sample_status = cpu_to_be16(status); if (status == IB_PMA_SAMPLE_STATUS_DONE) { cache_hw_sample_counters(ppd); ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0); ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; } } for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++) p->counter[i] = cpu_to_be32( get_cache_hw_sample_counters( ppd, ibp->pma_counter_select[i])); spin_unlock_irqrestore(&ibp->lock, flags); return reply((struct ib_smp *) pmp); } static int pma_get_portsamplesresult_ext(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portsamplesresult_ext *p = (struct ib_pma_portsamplesresult_ext *)pmp->data; struct qib_ibdev *dev = to_idev(ibdev); struct qib_devdata *dd = dd_from_dev(dev); struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); unsigned long flags; u8 status; int i; /* Port Sampling code owns the PS* HW counters */ memset(pmp->data, 0, sizeof(pmp->data)); spin_lock_irqsave(&ibp->lock, flags); p->tag = cpu_to_be16(ibp->pma_tag); if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; else { status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); p->sample_status = cpu_to_be16(status); /* 64 bits */ p->extended_width = cpu_to_be32(0x80000000); if (status == IB_PMA_SAMPLE_STATUS_DONE) { cache_hw_sample_counters(ppd); ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0); ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; } } for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++) p->counter[i] = cpu_to_be64( get_cache_hw_sample_counters( ppd, ibp->pma_counter_select[i])); spin_unlock_irqrestore(&ibp->lock, flags); return reply((struct ib_smp *) pmp); } static int pma_get_portcounters(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) pmp->data; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); struct qib_verbs_counters cntrs; u8 port_select = p->port_select; qib_get_counters(ppd, &cntrs); /* Adjust counters for any resets done. */ cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; cntrs.link_error_recovery_counter -= ibp->z_link_error_recovery_counter; cntrs.link_downed_counter -= ibp->z_link_downed_counter; cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors; cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; cntrs.port_xmit_data -= ibp->z_port_xmit_data; cntrs.port_rcv_data -= ibp->z_port_rcv_data; cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; cntrs.local_link_integrity_errors -= ibp->z_local_link_integrity_errors; cntrs.excessive_buffer_overrun_errors -= ibp->z_excessive_buffer_overrun_errors; cntrs.vl15_dropped -= ibp->z_vl15_dropped; cntrs.vl15_dropped += ibp->n_vl15_dropped; memset(pmp->data, 0, sizeof(pmp->data)); p->port_select = port_select; if (pmp->attr_mod != 0 || port_select != port) pmp->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->lli_ebor_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 pma_get_portcounters_cong(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { /* Congestion PMA packets start at offset 24 not 64 */ struct ib_pma_portcounters_cong *p = (struct ib_pma_portcounters_cong *)pmp->reserved; struct qib_verbs_counters cntrs; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); struct qib_devdata *dd = dd_from_ppd(ppd); u32 port_select = be32_to_cpu(pmp->attr_mod) & 0xFF; u64 xmit_wait_counter; unsigned long flags; /* * This check is performed only in the GET method because the * SET method ends up calling this anyway. */ if (!dd->psxmitwait_supported) pmp->status |= IB_SMP_UNSUP_METH_ATTR; if (port_select != port) pmp->status |= IB_SMP_INVALID_FIELD; qib_get_counters(ppd, &cntrs); spin_lock_irqsave(&ppd->ibport_data.lock, flags); xmit_wait_counter = xmit_wait_get_value_delta(ppd); spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); /* Adjust counters for any resets done. */ cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; cntrs.link_error_recovery_counter -= ibp->z_link_error_recovery_counter; cntrs.link_downed_counter -= ibp->z_link_downed_counter; cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors; cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; cntrs.local_link_integrity_errors -= ibp->z_local_link_integrity_errors; cntrs.excessive_buffer_overrun_errors -= ibp->z_excessive_buffer_overrun_errors; cntrs.vl15_dropped -= ibp->z_vl15_dropped; cntrs.vl15_dropped += ibp->n_vl15_dropped; cntrs.port_xmit_data -= ibp->z_port_xmit_data; cntrs.port_rcv_data -= ibp->z_port_rcv_data; cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; memset(pmp->reserved, 0, sizeof(pmp->reserved) + sizeof(pmp->data)); /* * Set top 3 bits to indicate interval in picoseconds in * remaining bits. */ p->port_check_rate = cpu_to_be16((QIB_XMIT_RATE_PICO << 13) | (dd->psxmitwait_check_rate & ~(QIB_XMIT_RATE_PICO << 13))); p->port_adr_events = cpu_to_be64(0); p->port_xmit_wait = cpu_to_be64(xmit_wait_counter); p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data); p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data); p->port_xmit_packets = cpu_to_be64(cntrs.port_xmit_packets); p->port_rcv_packets = cpu_to_be64(cntrs.port_rcv_packets); 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->lli_ebor_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); return reply((struct ib_smp *)pmp); } static int pma_get_portcounters_ext(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portcounters_ext *p = (struct ib_pma_portcounters_ext *)pmp->data; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); u64 swords, rwords, spkts, rpkts, xwait; u8 port_select = p->port_select; memset(pmp->data, 0, sizeof(pmp->data)); p->port_select = port_select; if (pmp->attr_mod != 0 || port_select != port) { pmp->status |= IB_SMP_INVALID_FIELD; goto bail; } qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); /* Adjust counters for any resets done. */ swords -= ibp->z_port_xmit_data; rwords -= ibp->z_port_rcv_data; spkts -= ibp->z_port_xmit_packets; rpkts -= ibp->z_port_rcv_packets; 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(ibp->n_unicast_xmit); p->port_unicast_rcv_packets = cpu_to_be64(ibp->n_unicast_rcv); p->port_multicast_xmit_packets = cpu_to_be64(ibp->n_multicast_xmit); p->port_multicast_rcv_packets = cpu_to_be64(ibp->n_multicast_rcv); bail: return reply((struct ib_smp *) pmp); } static int pma_set_portcounters(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) pmp->data; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); struct qib_verbs_counters cntrs; /* * Since the HW doesn't support clearing counters, we save the * current count and subtract it from future responses. */ qib_get_counters(ppd, &cntrs); if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) ibp->z_symbol_error_counter = cntrs.symbol_error_counter; if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) ibp->z_link_error_recovery_counter = cntrs.link_error_recovery_counter; if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) ibp->z_link_downed_counter = cntrs.link_downed_counter; if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) ibp->z_port_rcv_errors = cntrs.port_rcv_errors; if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) ibp->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors; if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) ibp->z_port_xmit_discards = cntrs.port_xmit_discards; if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) ibp->z_local_link_integrity_errors = cntrs.local_link_integrity_errors; if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) ibp->z_excessive_buffer_overrun_errors = cntrs.excessive_buffer_overrun_errors; if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { ibp->n_vl15_dropped = 0; ibp->z_vl15_dropped = cntrs.vl15_dropped; } if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) ibp->z_port_xmit_data = cntrs.port_xmit_data; if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) ibp->z_port_rcv_data = cntrs.port_rcv_data; if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) ibp->z_port_xmit_packets = cntrs.port_xmit_packets; if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) ibp->z_port_rcv_packets = cntrs.port_rcv_packets; return pma_get_portcounters(pmp, ibdev, port); } static int pma_set_portcounters_cong(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); struct qib_devdata *dd = dd_from_ppd(ppd); struct qib_verbs_counters cntrs; u32 counter_select = (be32_to_cpu(pmp->attr_mod) >> 24) & 0xFF; int ret = 0; unsigned long flags; qib_get_counters(ppd, &cntrs); /* Get counter values before we save them */ ret = pma_get_portcounters_cong(pmp, ibdev, port); if (counter_select & IB_PMA_SEL_CONG_XMIT) { spin_lock_irqsave(&ppd->ibport_data.lock, flags); ppd->cong_stats.counter = 0; dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0); spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); } if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) { ibp->z_port_xmit_data = cntrs.port_xmit_data; ibp->z_port_rcv_data = cntrs.port_rcv_data; ibp->z_port_xmit_packets = cntrs.port_xmit_packets; ibp->z_port_rcv_packets = cntrs.port_rcv_packets; } if (counter_select & IB_PMA_SEL_CONG_ALL) { ibp->z_symbol_error_counter = cntrs.symbol_error_counter; ibp->z_link_error_recovery_counter = cntrs.link_error_recovery_counter; ibp->z_link_downed_counter = cntrs.link_downed_counter; ibp->z_port_rcv_errors = cntrs.port_rcv_errors; ibp->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors; ibp->z_port_xmit_discards = cntrs.port_xmit_discards; ibp->z_local_link_integrity_errors = cntrs.local_link_integrity_errors; ibp->z_excessive_buffer_overrun_errors = cntrs.excessive_buffer_overrun_errors; ibp->n_vl15_dropped = 0; ibp->z_vl15_dropped = cntrs.vl15_dropped; } return ret; } static int pma_set_portcounters_ext(struct ib_perf *pmp, struct ib_device *ibdev, u8 port) { struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) pmp->data; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); u64 swords, rwords, spkts, rpkts, xwait; qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) ibp->z_port_xmit_data = swords; if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) ibp->z_port_rcv_data = rwords; if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) ibp->z_port_xmit_packets = spkts; if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) ibp->z_port_rcv_packets = rpkts; if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) ibp->n_unicast_xmit = 0; if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) ibp->n_unicast_rcv = 0; if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) ibp->n_multicast_xmit = 0; if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) ibp->n_multicast_rcv = 0; return pma_get_portcounters_ext(pmp, ibdev, port); } static int process_subn(struct ib_device *ibdev, int mad_flags, u8 port, struct ib_mad *in_mad, struct ib_mad *out_mad) { struct ib_smp *smp = (struct ib_smp *)out_mad; struct qib_ibport *ibp = to_iport(ibdev, port); struct qib_pportdata *ppd = ppd_from_ibp(ibp); int ret; *out_mad = *in_mad; if (smp->class_version != 1) { smp->status |= IB_SMP_UNSUP_VERSION; ret = reply(smp); goto bail; } ret = check_mkey(ibp, smp, mad_flags); if (ret) { u32 port_num = be32_to_cpu(smp->attr_mod); /* * If this is a get/set portinfo, we already check the * M_Key if the MAD is for another port and the M_Key * is OK on the receiving port. This check is needed * to increment the error counters when the M_Key * fails to match on *both* ports. */ if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && (smp->method == IB_MGMT_METHOD_GET || smp->method == IB_MGMT_METHOD_SET) && port_num && port_num <= ibdev->phys_port_cnt && port != port_num) (void) check_mkey(to_iport(ibdev, port_num), smp, 0); goto bail; } switch (smp->method) { case IB_MGMT_METHOD_GET: switch (smp->attr_id) { case IB_SMP_ATTR_NODE_DESC: ret = subn_get_nodedescription(smp, ibdev); goto bail; case IB_SMP_ATTR_NODE_INFO: ret = subn_get_nodeinfo(smp, ibdev, port); goto bail; case IB_SMP_ATTR_GUID_INFO: ret = subn_get_guidinfo(smp, ibdev, port); goto bail; case IB_SMP_ATTR_PORT_INFO: ret = subn_get_portinfo(smp, ibdev, port); goto bail; case IB_SMP_ATTR_PKEY_TABLE: ret = subn_get_pkeytable(smp, ibdev, port); goto bail; case IB_SMP_ATTR_SL_TO_VL_TABLE: ret = subn_get_sl_to_vl(smp, ibdev, port); goto bail; case IB_SMP_ATTR_VL_ARB_TABLE: ret = subn_get_vl_arb(smp, ibdev, port); goto bail; case IB_SMP_ATTR_SM_INFO: if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) { ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; goto bail; } if (ibp->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 = subn_set_guidinfo(smp, ibdev, port); goto bail; case IB_SMP_ATTR_PORT_INFO: ret = subn_set_portinfo(smp, ibdev, port); goto bail; case IB_SMP_ATTR_PKEY_TABLE: ret = subn_set_pkeytable(smp, ibdev, port); goto bail; case IB_SMP_ATTR_SL_TO_VL_TABLE: ret = subn_set_sl_to_vl(smp, ibdev, port); goto bail; case IB_SMP_ATTR_VL_ARB_TABLE: ret = subn_set_vl_arb(smp, ibdev, port); goto bail; case IB_SMP_ATTR_SM_INFO: if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) { ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; goto bail; } if (ibp->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_REPRESS: if (smp->attr_id == IB_SMP_ATTR_NOTICE) ret = subn_trap_repress(smp, ibdev, port); else { 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_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; case IB_MGMT_METHOD_SEND: if (ib_get_smp_direction(smp) && smp->attr_id == QIB_VENDOR_IPG) { ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT, smp->data[0]); ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; } else 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, struct ib_mad *in_mad, struct ib_mad *out_mad) { struct ib_perf *pmp = (struct ib_perf *)out_mad; int ret; *out_mad = *in_mad; if (pmp->class_version != 1) { pmp->status |= IB_SMP_UNSUP_VERSION; ret = reply((struct ib_smp *) pmp); goto bail; } switch (pmp->method) { case IB_MGMT_METHOD_GET: switch (pmp->attr_id) { case IB_PMA_CLASS_PORT_INFO: ret = pma_get_classportinfo(pmp, ibdev); goto bail; case IB_PMA_PORT_SAMPLES_CONTROL: ret = pma_get_portsamplescontrol(pmp, ibdev, port); goto bail; case IB_PMA_PORT_SAMPLES_RESULT: ret = pma_get_portsamplesresult(pmp, ibdev, port); goto bail; case IB_PMA_PORT_SAMPLES_RESULT_EXT: ret = pma_get_portsamplesresult_ext(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS: ret = pma_get_portcounters(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS_EXT: ret = pma_get_portcounters_ext(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS_CONG: ret = pma_get_portcounters_cong(pmp, ibdev, port); goto bail; default: pmp->status |= IB_SMP_UNSUP_METH_ATTR; ret = reply((struct ib_smp *) pmp); goto bail; } case IB_MGMT_METHOD_SET: switch (pmp->attr_id) { case IB_PMA_PORT_SAMPLES_CONTROL: ret = pma_set_portsamplescontrol(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS: ret = pma_set_portcounters(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS_EXT: ret = pma_set_portcounters_ext(pmp, ibdev, port); goto bail; case IB_PMA_PORT_COUNTERS_CONG: ret = pma_set_portcounters_cong(pmp, ibdev, port); goto bail; default: pmp->status |= IB_SMP_UNSUP_METH_ATTR; ret = reply((struct ib_smp *) pmp); goto bail; } case IB_MGMT_METHOD_TRAP: 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->status |= IB_SMP_UNSUP_METHOD; ret = reply((struct ib_smp *) pmp); } bail: return ret; } /** * qib_process_mad - process an incoming MAD packet * @ibdev: the infiniband device this packet came in on * @mad_flags: MAD flags * @port: 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 qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh, struct ib_mad *in_mad, struct ib_mad *out_mad) { int ret; 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, in_mad, out_mad); goto bail; case IB_MGMT_CLASS_PERF_MGMT: ret = process_perf(ibdev, port, in_mad, out_mad); goto bail; default: ret = IB_MAD_RESULT_SUCCESS; } bail: return ret; } static void send_handler(struct ib_mad_agent *agent, struct ib_mad_send_wc *mad_send_wc) { ib_free_send_mad(mad_send_wc->send_buf); } static void xmit_wait_timer_func(unsigned long opaque) { struct qib_pportdata *ppd = (struct qib_pportdata *)opaque; struct qib_devdata *dd = dd_from_ppd(ppd); unsigned long flags; u8 status; spin_lock_irqsave(&ppd->ibport_data.lock, flags); if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) { status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); if (status == IB_PMA_SAMPLE_STATUS_DONE) { /* save counter cache */ cache_hw_sample_counters(ppd); ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; } else goto done; } ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0); done: spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); mod_timer(&ppd->cong_stats.timer, jiffies + HZ); } int qib_create_agents(struct qib_ibdev *dev) { struct qib_devdata *dd = dd_from_dev(dev); struct ib_mad_agent *agent; struct qib_ibport *ibp; int p; int ret; for (p = 0; p < dd->num_pports; p++) { ibp = &dd->pport[p].ibport_data; agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI, NULL, 0, send_handler, NULL, NULL); if (IS_ERR(agent)) { ret = PTR_ERR(agent); goto err; } /* Initialize xmit_wait structure */ dd->pport[p].cong_stats.counter = 0; init_timer(&dd->pport[p].cong_stats.timer); dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func; dd->pport[p].cong_stats.timer.data = (unsigned long)(&dd->pport[p]); dd->pport[p].cong_stats.timer.expires = 0; add_timer(&dd->pport[p].cong_stats.timer); ibp->send_agent = agent; } return 0; err: for (p = 0; p < dd->num_pports; p++) { ibp = &dd->pport[p].ibport_data; if (ibp->send_agent) { agent = ibp->send_agent; ibp->send_agent = NULL; ib_unregister_mad_agent(agent); } } return ret; } void qib_free_agents(struct qib_ibdev *dev) { struct qib_devdata *dd = dd_from_dev(dev); struct ib_mad_agent *agent; struct qib_ibport *ibp; int p; for (p = 0; p < dd->num_pports; p++) { ibp = &dd->pport[p].ibport_data; if (ibp->send_agent) { agent = ibp->send_agent; ibp->send_agent = NULL; ib_unregister_mad_agent(agent); } if (ibp->sm_ah) { ib_destroy_ah(&ibp->sm_ah->ibah); ibp->sm_ah = NULL; } if (dd->pport[p].cong_stats.timer.data) del_timer_sync(&dd->pport[p].cong_stats.timer); } }