net/mlx4_en: Notify user when TX ring in error state
When hardware gets into error state, must notify user about it.
When QP in error state no traffic will be tx'ed from the attached
tx_ring.
Driver should know how to recover from this unexpected state. I will send later
on the recovery flow, but having the print shouldn't be delayed.
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 6dcca98..0d691e3 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -362,6 +362,15 @@
*/
rmb();
+ if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
+ MLX4_CQE_OPCODE_ERROR)) {
+ struct mlx4_err_cqe *cqe_err = (struct mlx4_err_cqe *)cqe;
+
+ en_err(priv, "CQE error - vendor syndrome: 0x%x syndrome: 0x%x\n",
+ cqe_err->vendor_err_syndrome,
+ cqe_err->syndrome);
+ }
+
/* Skip over last polled CQE */
new_index = be16_to_cpu(cqe->wqe_index) & size_mask;