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RDMA/rxe: Allow good work requests to be executed

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[ Upstream commit b703374837 ]

A previous commit incorrectly added an 'if(!err)' before scheduling the
requester task in rxe_post_send_kernel(). But if there were send wrs
successfully added to the send queue before a bad wr they might never get
executed.

This commit fixes this by scheduling the requester task if any wqes were
successfully posted in rxe_post_send_kernel() in rxe_verbs.c.

Link: https://lore.kernel.org/r/20240329145513.35381-5-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Fixes: 5bf944f241 ("RDMA/rxe: Add error messages")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bob Pearson 2024-03-29 09:55:05 -05:00 committed by Greg Kroah-Hartman
parent 21b4c6d4d8
commit 13c7bb72d3
1 changed files with 5 additions and 1 deletions
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6
drivers/infiniband/sw/rxe/rxe_verbs.c
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@ -888,6 +888,7 @@ static int rxe_post_send_kernel(struct rxe_qp *qp,
{ {
int err = 0; int err = 0;
unsigned long flags; unsigned long flags;
int good = 0;
spin_lock_irqsave(&qp->sq.sq_lock, flags); spin_lock_irqsave(&qp->sq.sq_lock, flags);
while (ibwr) { while (ibwr) {
@ -895,12 +896,15 @@ static int rxe_post_send_kernel(struct rxe_qp *qp,
if (err) { if (err) {
*bad_wr = ibwr; *bad_wr = ibwr;
break; break;
} else {
good++;
} }
ibwr = ibwr->next; ibwr = ibwr->next;
} }
spin_unlock_irqrestore(&qp->sq.sq_lock, flags); spin_unlock_irqrestore(&qp->sq.sq_lock, flags);
if (!err) /* kickoff processing of any posted wqes */
if (good)
rxe_sched_task(&qp->req.task); rxe_sched_task(&qp->req.task);
spin_lock_irqsave(&qp->state_lock, flags); spin_lock_irqsave(&qp->state_lock, flags);