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RDMA/rxe: Generate error completion for error requester QP state

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As per IBTA specification, all subsequent WQEs while QP is in error state
should be completed with a flush error.

Here we check QP_STATE_ERROR after req_next_wqe() so that rxe_completer()
has chance to be called where it will set CQ state to FLUSH ERROR and the
completion can associate with its WQE.

Link: https://lore.kernel.org/r/1658307368-1851-3-git-send-email-lizhijian@fujitsu.com
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Li Zhijian 2022-07-20 04:56:06 -04:00 • committed by Jason Gunthorpe
parent dea4266f7b
commit ae720bdb70
1 changed files with 12 additions and 1 deletions
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13
drivers/infiniband/sw/rxe/rxe_req.c
View file

@ -635,9 +635,20 @@ int rxe_requester(void *arg)
if (!rxe_get(qp)) if (!rxe_get(qp))
return -EAGAIN; return -EAGAIN;
if (unlikely(!qp->valid || qp->req.state == QP_STATE_ERROR)) if (unlikely(!qp->valid))
goto exit; goto exit;
if (unlikely(qp->req.state == QP_STATE_ERROR)) {
wqe = req_next_wqe(qp);
if (wqe)
/*
* Generate an error completion for error qp state
*/
goto err;
else
goto exit;
}
if (unlikely(qp->req.state == QP_STATE_RESET)) { if (unlikely(qp->req.state == QP_STATE_RESET)) {
qp->req.wqe_index = queue_get_consumer(q, qp->req.wqe_index = queue_get_consumer(q,
QUEUE_TYPE_FROM_CLIENT); QUEUE_TYPE_FROM_CLIENT);