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rdma/cxgb4: Add support for kernel mode SRQ's

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This patch implements the srq specific verbs such as create/destroy/modify
and post_srq_recv. And adds srq specific structures and defines to t4.h
and uapi.

Also updates the cq poll logic to deal with completions that are
associated with the SRQ's.

This patch also handles kernel mode SRQ_LIMIT events as well as flushed
SRQ buffers

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Raju Rangoju
2018-07-25 21:22:14 +05:30
committed by Jason Gunthorpe
parent 7fc7a7cffa
commit 6a0b6174d3
8 changed files with 929 additions and 167 deletions
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19
drivers/infiniband/hw/cxgb4/device.c
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@@ -275,10 +275,11 @@ static int dump_qp(int id, void *p, void *data)
set_ep_sin_addrs(ep, &lsin, &rsin, &m_lsin, &m_rsin);
cc = snprintf(qpd->buf + qpd->pos, space,
"rc qp sq id %u rq id %u state %u "
"rc qp sq id %u %s id %u state %u "
"onchip %u ep tid %u state %u "
"%pI4:%u/%u->%pI4:%u/%u\n",
qp->wq.sq.qid, qp->wq.rq.qid,
qp->wq.sq.qid, qp->srq ? "srq" : "rq",
qp->srq ? qp->srq->idx : qp->wq.rq.qid,
(int)qp->attr.state,
qp->wq.sq.flags & T4_SQ_ONCHIP,
ep->hwtid, (int)ep->com.state,
@@ -480,6 +481,9 @@ static int stats_show(struct seq_file *seq, void *v)
seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur,
dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail);
seq_printf(seq, " SRQS: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.srqt.total, dev->rdev.stats.srqt.cur,
dev->rdev.stats.srqt.max, dev->rdev.stats.srqt.fail);
seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur,
dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail);
@@ -530,6 +534,8 @@ static ssize_t stats_clear(struct file *file, const char __user *buf,
dev->rdev.stats.pbl.fail = 0;
dev->rdev.stats.rqt.max = 0;
dev->rdev.stats.rqt.fail = 0;
dev->rdev.stats.rqt.max = 0;
dev->rdev.stats.rqt.fail = 0;
dev->rdev.stats.ocqp.max = 0;
dev->rdev.stats.ocqp.fail = 0;
dev->rdev.stats.db_full = 0;
@@ -802,7 +808,7 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
rdev->qpmask = rdev->lldi.udb_density - 1;
rdev->cqmask = rdev->lldi.ucq_density - 1;
pr_debug("dev %s stag start 0x%0x size 0x%0x num stags %d pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x qp qid start %u size %u cq qid start %u size %u\n",
pr_debug("dev %s stag start 0x%0x size 0x%0x num stags %d pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x qp qid start %u size %u cq qid start %u size %u srq size %u\n",
pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start,
rdev->lldi.vr->stag.size, c4iw_num_stags(rdev),
rdev->lldi.vr->pbl.start,
@@ -811,7 +817,8 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
rdev->lldi.vr->qp.start,
rdev->lldi.vr->qp.size,
rdev->lldi.vr->cq.start,
rdev->lldi.vr->cq.size);
rdev->lldi.vr->cq.size,
rdev->lldi.vr->srq.size);
pr_debug("udb %pR db_reg %p gts_reg %p qpmask 0x%x cqmask 0x%x\n",
&rdev->lldi.pdev->resource[2],
rdev->lldi.db_reg, rdev->lldi.gts_reg,
@@ -824,10 +831,12 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
rdev->stats.stag.total = rdev->lldi.vr->stag.size;
rdev->stats.pbl.total = rdev->lldi.vr->pbl.size;
rdev->stats.rqt.total = rdev->lldi.vr->rq.size;
rdev->stats.srqt.total = rdev->lldi.vr->srq.size;
rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size;
rdev->stats.qid.total = rdev->lldi.vr->qp.size;
err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD);
err = c4iw_init_resource(rdev, c4iw_num_stags(rdev),
T4_MAX_NUM_PD, rdev->lldi.vr->srq.size);
if (err) {
pr_err("error %d initializing resources\n", err);
return err;