From ae720bdb703b295fed4ded28e14dd06a534a3012 Mon Sep 17 00:00:00 2001 From: Li Zhijian Date: Wed, 20 Jul 2022 04:56:06 -0400 Subject: [PATCH] RDMA/rxe: Generate error completion for error requester QP state 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 Signed-off-by: Jason Gunthorpe --- drivers/infiniband/sw/rxe/rxe_req.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c index 5a85687b9c725c..f3bd071d3e7ed2 100644 --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -635,9 +635,20 @@ int rxe_requester(void *arg) if (!rxe_get(qp)) return -EAGAIN; - if (unlikely(!qp->valid || qp->req.state == QP_STATE_ERROR)) + if (unlikely(!qp->valid)) 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)) { qp->req.wqe_index = queue_get_consumer(q, QUEUE_TYPE_FROM_CLIENT);