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i40iw: Do not allow posting WR after QP is flushed 

A Work Request (WR) posted after QP is flushed will not
get a flush completion.

Correct this problem by not allowing posting of WRs
after a QP is flushed.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hifive-unleashed-5.1
Shiraz Saleem 2017-10-03 11:11:48 -05:00 committed by Doug Ledford
parent abae49e433
commit 40837273d0
1 changed files with 13 additions and 0 deletions
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13
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View File

@ -2202,6 +2202,12 @@ static int i40iw_post_send(struct ib_qp *ibqp,
ukqp = &iwqp->sc_qp.qp_uk;
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->flush_issued) {
err = -EINVAL;
goto out;
}
while (ib_wr) {
inv_stag = false;
memset(&info, 0, sizeof(info));
@ -2344,6 +2350,7 @@ static int i40iw_post_send(struct ib_qp *ibqp,
ib_wr = ib_wr->next;
}
out:
if (err)
*bad_wr = ib_wr;
else
@ -2376,6 +2383,12 @@ static int i40iw_post_recv(struct ib_qp *ibqp,
memset(&post_recv, 0, sizeof(post_recv));
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->flush_issued) {
err = -EINVAL;
goto out;
}
while (ib_wr) {
post_recv.num_sges = ib_wr->num_sge;
post_recv.wr_id = ib_wr->wr_id;