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.
Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx>
---
V5: parentheses issue # Cheng Xu
V4: check QP ERROR before QP RESET # Bob
V3: unlikely() optimization # Cheng Xu <chengyou@xxxxxxxxxxxxxxxxx>
update commit log # Haakon Bugge <haakon.bugge@xxxxxxxxxx>
---
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 c187deeb6e6b..cbb2ce2d7b50 100644
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -611,9 +611,20 @@ int rxe_requester(void *arg)
return -EAGAIN;
next_wqe:
- 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);
--
2.31.1
