This is a note to let you know that I've just added the patch titled
RDMA/irdma: Do not generate SW completions for NOPs
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-irdma-do-not-generate-sw-completions-for-nops.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 83f288e2498d4940a2f4d9d29dbd2dc50a458791
Author: Mustafa Ismail <mustafa.ismail@xxxxxxxxx>
Date: Wed Mar 15 09:52:28 2023 -0500
RDMA/irdma: Do not generate SW completions for NOPs
[ Upstream commit 30ed9ee9a10a90ae719dcfcacead1d0506fa45ed ]
Currently, artificial SW completions are generated for NOP wqes which can
generate unexpected completions with wr_id = 0. Skip the generation of
artificial completions for NOPs.
Fixes: 81091d7696ae ("RDMA/irdma: Add SW mechanism to generate completions on error")
Signed-off-by: Mustafa Ismail <mustafa.ismail@xxxxxxxxx>
Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230315145231.931-2-shiraz.saleem@xxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/irdma/utils.c b/drivers/infiniband/hw/irdma/utils.c
index 445e69e864097..7887230c867b1 100644
--- a/drivers/infiniband/hw/irdma/utils.c
+++ b/drivers/infiniband/hw/irdma/utils.c
@@ -2595,7 +2595,10 @@ void irdma_generate_flush_completions(struct irdma_qp *iwqp)
/* remove the SQ WR by moving SQ tail*/
IRDMA_RING_SET_TAIL(*sq_ring,
sq_ring->tail + qp->sq_wrtrk_array[sq_ring->tail].quanta);
-
+ if (cmpl->cpi.op_type == IRDMAQP_OP_NOP) {
+ kfree(cmpl);
+ continue;
+ }
ibdev_dbg(iwqp->iwscq->ibcq.device,
"DEV: %s: adding wr_id = 0x%llx SQ Completion to list qp_id=%d\n",
__func__, cmpl->cpi.wr_id, qp->qp_id);
