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>
---
V3: unlikely() optimization # Cheng Xu <chengyou@xxxxxxxxxxxxxxxxx>
update commit log # Haakon Bugge <haakon.bugge@xxxxxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_req.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
index 8bdd0b6b578f..c1f1c19f26b2 100644
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -624,7 +624,7 @@ int rxe_requester(void *arg)
rxe_get(qp);
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_RESET)) {
@@ -646,6 +646,14 @@ int rxe_requester(void *arg)
if (unlikely(!wqe))
goto exit;
+ if (unlikely(qp->req.state == QP_STATE_ERROR)) {
+ /*
+ * Generate an error completion so that user space is able to
+ * poll this completion.
+ */
+ goto err;
+ }
+
if (wqe->mask & WR_LOCAL_OP_MASK) {
ret = rxe_do_local_ops(qp, wqe);
if (unlikely(ret))
--
2.31.1
