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RDMA/rxe: Update wqe_index for each wqe error completion

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Previously, if user space keeps sending abnormal wqe, queue.index will
keep increasing while qp->req.wqe_index doesn't. Once
qp->req.wqe_index==queue.index in next round, req_next_wqe() will treat
queue as empty. In such case, no new completion would be generated.

Update wqe_index for each wqe completion so that req_next_wqe() can get
next wqe properly.

Link: https://lore.kernel.org/r/1658307368-1851-2-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 04:56:05 -04:00 committed by Jason Gunthorpe
parent b5605148e6
commit dea4266f7b
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/sw/rxe/rxe_req.c
View file

@ -802,6 +802,8 @@ int rxe_requester(void *arg)
ret = 0;
goto out;
err:
/* update wqe_index for each wqe completion */
qp->req.wqe_index = queue_next_index(qp->sq.queue, qp->req.wqe_index);
wqe->state = wqe_state_error;
rxe_run_task(&qp->comp.task, 0);
exit: