* [PATCH] RDMA/mlx5: use QP port when decoding responder CQEs
@ 2026-04-10 7:40 Chenguang Zhao
2026-05-10 15:55 ` Leon Romanovsky
0 siblings, 1 reply; 2+ messages in thread
From: Chenguang Zhao @ 2026-04-10 7:40 UTC (permalink / raw)
To: Leon Romanovsky, Jason Gunthorpe; +Cc: Chenguang Zhao, linux-rdma
The responder CQE path determines the link layer via
rdma_port_get_link_layer(). Use qp->port instead of
hardcoding port 1, which can mis-decode completions on
multi-port devices.
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
---
drivers/infiniband/hw/mlx5/cq.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index d0cd3f805bcb..2481b3361c1d 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -169,7 +169,8 @@ enum {
static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
struct mlx5_ib_qp *qp)
{
- enum rdma_link_layer ll = rdma_port_get_link_layer(qp->ibqp.device, 1);
+ enum rdma_link_layer ll =
+ rdma_port_get_link_layer(qp->ibqp.device, qp->port);
struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
struct mlx5_ib_srq *srq = NULL;
struct mlx5_ib_wq *wq;
--
2.25.1
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2026-04-10 7:40 [PATCH] RDMA/mlx5: use QP port when decoding responder CQEs Chenguang Zhao
2026-05-10 15:55 ` Leon Romanovsky
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