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linux/drivers/infiniband/hw/qib/qib_mad.c
Leon Romanovsky dd0b0159f7 RDMA/mad: Do not check MAD sizes in roce and ib drivers 
All callers for process_mad allocate MAD structures with proper sizes,
there is no need to recheck it.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-06 15:55:22 -04:00

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/*
* Copyright (c) 2012 Intel Corporation. All rights reserved.
* Copyright (c) 2006 - 2012 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 "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 int reply_failure(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_FAILURE | 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->rvp.send_agent;
if (!agent)
return;
/* o14-3.2.1 */
if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE))
return;
/* o14-2 */
if (ibp->rvp.trap_timeout &&
time_before(jiffies, ibp->rvp.trap_timeout))
return;
send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
IB_MGMT_MAD_DATA, GFP_ATOMIC,
IB_MGMT_BASE_VERSION);
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->rvp.tid++;
smp->tid = cpu_to_be64(ibp->rvp.tid);
smp->attr_id = IB_SMP_ATTR_NOTICE;
/* o14-1: smp->mkey = 0; */
memcpy(smp->data, data, len);
spin_lock_irqsave(&ibp->rvp.lock, flags);
if (!ibp->rvp.sm_ah) {
if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) {
struct ib_ah *ah;
ah = qib_create_qp0_ah(ibp, (u16)ibp->rvp.sm_lid);
if (IS_ERR(ah))
ret = PTR_ERR(ah);
else {
send_buf->ah = ah;
ibp->rvp.sm_ah = ibah_to_rvtah(ah);
ret = 0;
}
} else
ret = -EINVAL;
} else {
send_buf->ah = &ibp->rvp.sm_ah->ibah;
ret = 0;
}
spin_unlock_irqrestore(&ibp->rvp.lock, flags);
if (!ret)
ret = ib_post_send_mad(send_buf, NULL);
if (!ret) {
/* 4.096 usec. */
timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000;
ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout);
} else {
ib_free_send_mad(send_buf);
ibp->rvp.trap_timeout = 0;
}
}
/*
* Send a bad P_Key trap (ch. 14.3.8).
*/
void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
{
struct ib_mad_notice_attr data;
ibp->rvp.n_pkt_drops++;
ibp->rvp.pkey_violations++;
/* 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_PKEY;
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 rvt_dev_info *rdi, u8 port_num)
{
struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
struct qib_devdata *dd = dd_from_dev(ibdev);
struct qib_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
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->rvp.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 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;
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 valid_mkey = 0;
int ret = 0;
/* Is the mkey in the process of expiring? */
if (ibp->rvp.mkey_lease_timeout &&
time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) {
/* Clear timeout and mkey protection field. */
ibp->rvp.mkey_lease_timeout = 0;
ibp->rvp.mkeyprot = 0;
}
if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->rvp.mkey == 0 ||
ibp->rvp.mkey == smp->mkey)
valid_mkey = 1;
/* Unset lease timeout on any valid Get/Set/TrapRepress */
if (valid_mkey && ibp->rvp.mkey_lease_timeout &&
(smp->method == IB_MGMT_METHOD_GET ||
smp->method == IB_MGMT_METHOD_SET ||
smp->method == IB_MGMT_METHOD_TRAP_REPRESS))
ibp->rvp.mkey_lease_timeout = 0;
if (!valid_mkey) {
switch (smp->method) {
case IB_MGMT_METHOD_GET:
/* Bad mkey not a violation below level 2 */
if (ibp->rvp.mkeyprot < 2)
break;
/* fall through */
case IB_MGMT_METHOD_SET:
case IB_MGMT_METHOD_TRAP_REPRESS:
if (ibp->rvp.mkey_violations != 0xFFFF)
++ibp->rvp.mkey_violations;
if (!ibp->rvp.mkey_lease_timeout &&
ibp->rvp.mkey_lease_period)
ibp->rvp.mkey_lease_timeout = jiffies +
ibp->rvp.mkey_lease_period * HZ;
/* Generate a trap notice. */
qib_bad_mkey(ibp, smp);
ret = 1;
}
}
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;
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) {
ret = IB_MAD_RESULT_FAILURE;
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_GET &&
ibp->rvp.mkey != smp->mkey &&
ibp->rvp.mkeyprot == 1))
pip->mkey = ibp->rvp.mkey;
pip->gid_prefix = ibp->rvp.gid_prefix;
pip->lid = cpu_to_be16(ppd->lid);
pip->sm_lid = cpu_to_be16((u16)ibp->rvp.sm_lid);
pip->cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags);
/* pip->diag_code; */
pip->mkey_lease_period = cpu_to_be16(ibp->rvp.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->rvp.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->rvp.sm_sl;
pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */
pip->vl_high_limit = ibp->rvp.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->rvp.mkey_violations);
/* P_KeyViolations are counted by hardware. */
pip->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations);
pip->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations);
/* Only the hardware GUID is supported for now */
pip->guid_cap = QIB_GUIDS_PER_PORT;
pip->clientrereg_resv_subnetto = ibp->rvp.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->rvp.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;
u8 clientrereg = (pip->clientrereg_resv_subnetto & 0x80);
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->rvp.mkey = pip->mkey;
ibp->rvp.gid_prefix = pip->gid_prefix;
ibp->rvp.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 >= be16_to_cpu(IB_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 >= be16_to_cpu(IB_MULTICAST_LID_BASE))
smp->status |= IB_SMP_INVALID_FIELD;
else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) {
spin_lock_irqsave(&ibp->rvp.lock, flags);
if (ibp->rvp.sm_ah) {
if (smlid != ibp->rvp.sm_lid)
rdma_ah_set_dlid(&ibp->rvp.sm_ah->attr,
smlid);
if (msl != ibp->rvp.sm_sl)
rdma_ah_set_sl(&ibp->rvp.sm_ah->attr, msl);
}
spin_unlock_irqrestore(&ibp->rvp.lock, flags);
if (smlid != ibp->rvp.sm_lid)
ibp->rvp.sm_lid = smlid;
if (msl != ibp->rvp.sm_sl)
ibp->rvp.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)
set_link_width_enabled(ppd, 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)
set_link_speed_enabled(ppd,
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->rvp.mkeyprot = pip->mkeyprot_resv_lmc >> 6;
ibp->rvp.vl_high_limit = pip->vl_high_limit;
(void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT,
ibp->rvp.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->rvp.mkey_violations = 0;
if (pip->pkey_violations == 0)
ibp->rvp.pkey_violations = 0;
if (pip->qkey_violations == 0)
ibp->rvp.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->rvp.subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
/*
* 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;
}
if (clientrereg) {
event.event = IB_EVENT_CLIENT_REREGISTER;
ib_dispatch_event(&event);
}
/* restore re-reg bit per o14-12.2.1 */
pip->clientrereg_resv_subnetto |= clientrereg;
goto get_only;
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.rdi.ibdev;
event.element.port_num = port;
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->rvp.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->rvp.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_pma_mad *pmp,
struct ib_device *ibdev)
{
struct ib_class_port_info *p =
(struct ib_class_port_info *)pmp->data;
struct qib_devdata *dd = dd_from_ibdev(ibdev);
memset(pmp->data, 0, sizeof(pmp->data));
if (pmp->mad_hdr.attr_mod != 0)
pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
/* Note that AllPortSelect is not valid */
p->base_version = 1;
p->class_version = 1;
p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
/*
* Set the most significant bit of CM2 to indicate support for
* congestion statistics
*/
ib_set_cpi_capmask2(p,
dd->psxmitwait_supported <<
(31 - IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE));
/*
* Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
*/
ib_set_cpi_resp_time(p, 18);
return reply((struct ib_smp *) pmp);
}
static int 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 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->mad_hdr.attr_mod != 0 || port_select != port) {
pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
goto bail;
}
spin_lock_irqsave(&ibp->rvp.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->rvp.pma_sample_start);
p->sample_interval = cpu_to_be32(ibp->rvp.pma_sample_interval);
p->tag = cpu_to_be16(ibp->rvp.pma_tag);
p->counter_select[0] = ibp->rvp.pma_counter_select[0];
p->counter_select[1] = ibp->rvp.pma_counter_select[1];
p->counter_select[2] = ibp->rvp.pma_counter_select[2];
p->counter_select[3] = ibp->rvp.pma_counter_select[3];
p->counter_select[4] = ibp->rvp.pma_counter_select[4];
spin_unlock_irqrestore(&ibp->rvp.lock, flags);
bail:
return reply((struct ib_smp *) pmp);
}
static int 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 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->mad_hdr.attr_mod != 0 || p->port_select != port) {
pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
ret = reply((struct ib_smp *) pmp);
goto bail;
}
spin_lock_irqsave(&ibp->rvp.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->rvp.pma_sample_start = be32_to_cpu(p->sample_start);
ibp->rvp.pma_sample_interval = be32_to_cpu(p->sample_interval);
ibp->rvp.pma_tag = be16_to_cpu(p->tag);
ibp->rvp.pma_counter_select[0] = p->counter_select[0];
ibp->rvp.pma_counter_select[1] = p->counter_select[1];
ibp->rvp.pma_counter_select[2] = p->counter_select[2];
ibp->rvp.pma_counter_select[3] = p->counter_select[3];
ibp->rvp.pma_counter_select[4] = p->counter_select[4];
dd->f_set_cntr_sample(ppd, ibp->rvp.pma_sample_interval,
ibp->rvp.pma_sample_start);
}
spin_unlock_irqrestore(&ibp->rvp.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_pma_mad *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->rvp.lock, flags);
p->tag = cpu_to_be16(ibp->rvp.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->rvp.pma_counter_select); i++)
p->counter[i] = cpu_to_be32(
get_cache_hw_sample_counters(
ppd, ibp->rvp.pma_counter_select[i]));
spin_unlock_irqrestore(&ibp->rvp.lock, flags);
return reply((struct ib_smp *) pmp);
}
static int pma_get_portsamplesresult_ext(struct ib_pma_mad *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->rvp.lock, flags);
p->tag = cpu_to_be16(ibp->rvp.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->rvp.pma_counter_select); i++)
p->counter[i] = cpu_to_be64(
get_cache_hw_sample_counters(
ppd, ibp->rvp.pma_counter_select[i]));
spin_unlock_irqrestore(&ibp->rvp.lock, flags);
return reply((struct ib_smp *) pmp);
}
static int 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 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->rvp.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)
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 pma_get_portcounters_cong(struct ib_pma_mad *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->mad_hdr.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->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR;
if (port_select != port)
pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD;
qib_get_counters(ppd, &cntrs);
spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags);
xmit_wait_counter = xmit_wait_get_value_delta(ppd);
spin_unlock_irqrestore(&ppd->ibport_data.rvp.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->rvp.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));
memset(pmp->data, 0, 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->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);
return reply((struct ib_smp *)pmp);
}
static void qib_snapshot_pmacounters(
struct qib_ibport *ibp,
struct qib_pma_counters *pmacounters)
{
struct qib_pma_counters *p;
int cpu;
memset(pmacounters, 0, sizeof(*pmacounters));
for_each_possible_cpu(cpu) {
p = per_cpu_ptr(ibp->pmastats, cpu);
pmacounters->n_unicast_xmit += p->n_unicast_xmit;
pmacounters->n_unicast_rcv += p->n_unicast_rcv;
pmacounters->n_multicast_xmit += p->n_multicast_xmit;
pmacounters->n_multicast_rcv += p->n_multicast_rcv;
}
}
static int 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 qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
u64 swords, rwords, spkts, rpkts, xwait;
struct qib_pma_counters pma;
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) {
pmp->mad_hdr.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);
qib_snapshot_pmacounters(ibp, &pma);
p->port_unicast_xmit_packets = cpu_to_be64(pma.n_unicast_xmit
- ibp->z_unicast_xmit);
p->port_unicast_rcv_packets = cpu_to_be64(pma.n_unicast_rcv
- ibp->z_unicast_rcv);
p->port_multicast_xmit_packets = cpu_to_be64(pma.n_multicast_xmit
- ibp->z_multicast_xmit);
p->port_multicast_rcv_packets = cpu_to_be64(pma.n_multicast_rcv
- ibp->z_multicast_rcv);
bail:
return reply((struct ib_smp *) pmp);
}
static int 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 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->rvp.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_pma_mad *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->mad_hdr.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.rvp.lock, flags);
ppd->cong_stats.counter = 0;
dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL,
0x0);
spin_unlock_irqrestore(&ppd->ibport_data.rvp.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->rvp.n_vl15_dropped = 0;
ibp->z_vl15_dropped = cntrs.vl15_dropped;
}
return ret;
}
static int 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 qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
u64 swords, rwords, spkts, rpkts, xwait;
struct qib_pma_counters pma;
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;
qib_snapshot_pmacounters(ibp, &pma);
if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS)
ibp->z_unicast_xmit = pma.n_unicast_xmit;
if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS)
ibp->z_unicast_rcv = pma.n_unicast_rcv;
if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS)
ibp->z_multicast_xmit = pma.n_multicast_xmit;
if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS)
ibp->z_multicast_rcv = pma.n_multicast_rcv;
return pma_get_portcounters_ext(pmp, ibdev, port);
}
static int process_subn(struct ib_device *ibdev, int mad_flags,
u8 port, const 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);
ret = IB_MAD_RESULT_FAILURE;
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->rvp.port_cap_flags & IB_PORT_SM_DISABLED) {
ret = IB_MAD_RESULT_SUCCESS |
IB_MAD_RESULT_CONSUMED;
goto bail;
}
if (ibp->rvp.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->rvp.port_cap_flags & IB_PORT_SM_DISABLED) {
ret = IB_MAD_RESULT_SUCCESS |
IB_MAD_RESULT_CONSUMED;
goto bail;
}
if (ibp->rvp.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,
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 = 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->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 = 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->mad_hdr.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->mad_hdr.status |= IB_SMP_UNSUP_METHOD;
ret = reply((struct ib_smp *) pmp);
}
bail:
return ret;
}
static int cc_get_classportinfo(struct ib_cc_mad *ccp,
struct ib_device *ibdev)
{
struct ib_cc_classportinfo_attr *p =
(struct ib_cc_classportinfo_attr *)ccp->mgmt_data;
p->base_version = 1;
p->class_version = 1;
p->cap_mask = 0;
/*
* Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec.
*/
p->resp_time_value = 18;
return reply((struct ib_smp *) ccp);
}
static int cc_get_congestion_info(struct ib_cc_mad *ccp,
struct ib_device *ibdev, u8 port)
{
struct ib_cc_info_attr *p =
(struct ib_cc_info_attr *)ccp->mgmt_data;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
p->congestion_info = 0;
p->control_table_cap = ppd->cc_max_table_entries;
return reply((struct ib_smp *) ccp);
}
static int cc_get_congestion_setting(struct ib_cc_mad *ccp,
struct ib_device *ibdev, u8 port)
{
int i;
struct ib_cc_congestion_setting_attr *p =
(struct ib_cc_congestion_setting_attr *)ccp->mgmt_data;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
struct ib_cc_congestion_entry_shadow *entries;
spin_lock(&ppd->cc_shadow_lock);
entries = ppd->congestion_entries_shadow->entries;
p->port_control = cpu_to_be16(
ppd->congestion_entries_shadow->port_control);
p->control_map = cpu_to_be16(
ppd->congestion_entries_shadow->control_map);
for (i = 0; i < IB_CC_CCS_ENTRIES; i++) {
p->entries[i].ccti_increase = entries[i].ccti_increase;
p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer);
p->entries[i].trigger_threshold = entries[i].trigger_threshold;
p->entries[i].ccti_min = entries[i].ccti_min;
}
spin_unlock(&ppd->cc_shadow_lock);
return reply((struct ib_smp *) ccp);
}
static int cc_get_congestion_control_table(struct ib_cc_mad *ccp,
struct ib_device *ibdev, u8 port)
{
struct ib_cc_table_attr *p =
(struct ib_cc_table_attr *)ccp->mgmt_data;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
u32 cct_block_index = be32_to_cpu(ccp->attr_mod);
u32 max_cct_block;
u32 cct_entry;
struct ib_cc_table_entry_shadow *entries;
int i;
/* Is the table index more than what is supported? */
if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1)
goto bail;
spin_lock(&ppd->cc_shadow_lock);
max_cct_block =
(ppd->ccti_entries_shadow->ccti_last_entry + 1)/IB_CCT_ENTRIES;
max_cct_block = max_cct_block ? max_cct_block - 1 : 0;
if (cct_block_index > max_cct_block) {
spin_unlock(&ppd->cc_shadow_lock);
goto bail;
}
ccp->attr_mod = cpu_to_be32(cct_block_index);
cct_entry = IB_CCT_ENTRIES * (cct_block_index + 1);
cct_entry--;
p->ccti_limit = cpu_to_be16(cct_entry);
entries = &ppd->ccti_entries_shadow->
entries[IB_CCT_ENTRIES * cct_block_index];
cct_entry %= IB_CCT_ENTRIES;
for (i = 0; i <= cct_entry; i++)
p->ccti_entries[i].entry = cpu_to_be16(entries[i].entry);
spin_unlock(&ppd->cc_shadow_lock);
return reply((struct ib_smp *) ccp);
bail:
return reply_failure((struct ib_smp *) ccp);
}
static int cc_set_congestion_setting(struct ib_cc_mad *ccp,
struct ib_device *ibdev, u8 port)
{
struct ib_cc_congestion_setting_attr *p =
(struct ib_cc_congestion_setting_attr *)ccp->mgmt_data;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
int i;
ppd->cc_sl_control_map = be16_to_cpu(p->control_map);
for (i = 0; i < IB_CC_CCS_ENTRIES; i++) {
ppd->congestion_entries[i].ccti_increase =
p->entries[i].ccti_increase;
ppd->congestion_entries[i].ccti_timer =
be16_to_cpu(p->entries[i].ccti_timer);
ppd->congestion_entries[i].trigger_threshold =
p->entries[i].trigger_threshold;
ppd->congestion_entries[i].ccti_min =
p->entries[i].ccti_min;
}
return reply((struct ib_smp *) ccp);
}
static int cc_set_congestion_control_table(struct ib_cc_mad *ccp,
struct ib_device *ibdev, u8 port)
{
struct ib_cc_table_attr *p =
(struct ib_cc_table_attr *)ccp->mgmt_data;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
u32 cct_block_index = be32_to_cpu(ccp->attr_mod);
u32 cct_entry;
struct ib_cc_table_entry_shadow *entries;
int i;
/* Is the table index more than what is supported? */
if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1)
goto bail;
/* If this packet is the first in the sequence then
* zero the total table entry count.
*/
if (be16_to_cpu(p->ccti_limit) < IB_CCT_ENTRIES)
ppd->total_cct_entry = 0;
cct_entry = (be16_to_cpu(p->ccti_limit))%IB_CCT_ENTRIES;
/* ccti_limit is 0 to 63 */
ppd->total_cct_entry += (cct_entry + 1);
if (ppd->total_cct_entry > ppd->cc_supported_table_entries)
goto bail;
ppd->ccti_limit = be16_to_cpu(p->ccti_limit);
entries = ppd->ccti_entries + (IB_CCT_ENTRIES * cct_block_index);
for (i = 0; i <= cct_entry; i++)
entries[i].entry = be16_to_cpu(p->ccti_entries[i].entry);
spin_lock(&ppd->cc_shadow_lock);
ppd->ccti_entries_shadow->ccti_last_entry = ppd->total_cct_entry - 1;
memcpy(ppd->ccti_entries_shadow->entries, ppd->ccti_entries,
(ppd->total_cct_entry * sizeof(struct ib_cc_table_entry)));
ppd->congestion_entries_shadow->port_control = IB_CC_CCS_PC_SL_BASED;
ppd->congestion_entries_shadow->control_map = ppd->cc_sl_control_map;
memcpy(ppd->congestion_entries_shadow->entries, ppd->congestion_entries,
IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry));
spin_unlock(&ppd->cc_shadow_lock);
return reply((struct ib_smp *) ccp);
bail:
return reply_failure((struct ib_smp *) ccp);
}
static int process_cc(struct ib_device *ibdev, int mad_flags,
u8 port, const struct ib_mad *in_mad,
struct ib_mad *out_mad)
{
struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad;
int ret;
*out_mad = *in_mad;
if (ccp->class_version != 2) {
ccp->status |= IB_SMP_UNSUP_VERSION;
ret = reply((struct ib_smp *)ccp);
goto bail;
}
switch (ccp->method) {
case IB_MGMT_METHOD_GET:
switch (ccp->attr_id) {
case IB_CC_ATTR_CLASSPORTINFO:
ret = cc_get_classportinfo(ccp, ibdev);
goto bail;
case IB_CC_ATTR_CONGESTION_INFO:
ret = cc_get_congestion_info(ccp, ibdev, port);
goto bail;
case IB_CC_ATTR_CA_CONGESTION_SETTING:
ret = cc_get_congestion_setting(ccp, ibdev, port);
goto bail;
case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
ret = cc_get_congestion_control_table(ccp, ibdev, port);
goto bail;
/* FALLTHROUGH */
default:
ccp->status |= IB_SMP_UNSUP_METH_ATTR;
ret = reply((struct ib_smp *) ccp);
goto bail;
}
case IB_MGMT_METHOD_SET:
switch (ccp->attr_id) {
case IB_CC_ATTR_CA_CONGESTION_SETTING:
ret = cc_set_congestion_setting(ccp, ibdev, port);
goto bail;
case IB_CC_ATTR_CONGESTION_CONTROL_TABLE:
ret = cc_set_congestion_control_table(ccp, ibdev, port);
goto bail;
/* FALLTHROUGH */
default:
ccp->status |= IB_SMP_UNSUP_METH_ATTR;
ret = reply((struct ib_smp *) ccp);
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;
case IB_MGMT_METHOD_TRAP:
default:
ccp->status |= IB_SMP_UNSUP_METHOD;
ret = reply((struct ib_smp *) ccp);
}
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,
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;
struct qib_ibport *ibp = to_iport(ibdev, port);
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
const struct ib_mad *in_mad = (const struct ib_mad *)in;
struct ib_mad *out_mad = (struct ib_mad *)out;
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;
case IB_MGMT_CLASS_CONG_MGMT:
if (!ppd->congestion_entries_shadow ||
!qib_cc_table_size) {
ret = IB_MAD_RESULT_SUCCESS;
goto bail;
}
ret = process_cc(ibdev, mad_flags, port, in_mad, out_mad);
goto bail;
default:
ret = IB_MAD_RESULT_SUCCESS;
}
bail:
return ret;
}
static void xmit_wait_timer_func(struct timer_list *t)
{
struct qib_pportdata *ppd = from_timer(ppd, t, cong_stats.timer);
struct qib_devdata *dd = dd_from_ppd(ppd);
unsigned long flags;
u8 status;
spin_lock_irqsave(&ppd->ibport_data.rvp.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.rvp.lock, flags);
mod_timer(&ppd->cong_stats.timer, jiffies + HZ);
}
void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx)
{
struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
struct qib_devdata *dd = container_of(ibdev,
struct qib_devdata, verbs_dev);
/* Initialize xmit_wait structure */
dd->pport[port_idx].cong_stats.counter = 0;
timer_setup(&dd->pport[port_idx].cong_stats.timer,
xmit_wait_timer_func, 0);
dd->pport[port_idx].cong_stats.timer.expires = 0;
add_timer(&dd->pport[port_idx].cong_stats.timer);
}
void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx)
{
struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi);
struct qib_devdata *dd = container_of(ibdev,
struct qib_devdata, verbs_dev);
if (dd->pport[port_idx].cong_stats.timer.function)
del_timer_sync(&dd->pport[port_idx].cong_stats.timer);
if (dd->pport[port_idx].ibport_data.smi_ah)
rdma_destroy_ah(&dd->pport[port_idx].ibport_data.smi_ah->ibah,
RDMA_DESTROY_AH_SLEEPABLE);
}
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