diff mbox series

net/mlx5: fix WQE counter assert in free completion queue

Message ID 20201116194815.29712-1-akozyrev@nvidia.com (mailing list archive)
State Accepted, archived
Delegated to: Raslan Darawsheh
Headers show
Series net/mlx5: fix WQE counter assert in free completion queue | expand

Checks

Context Check Description
ci/travis-robot success Travis build: passed
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional fail Functional Testing issues
ci/Intel-compilation success Compilation OK
ci/iol-testing success Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/checkpatch success coding style OK

Commit Message

Alexander Kozyrev Nov. 16, 2020, 7:48 p.m. UTC
The following assertion fails in case RTE_ENABLE_ASSERT is enabled:
PANIC in mlx5_tx_handle_completion():
assert "(txq->fcqs[txq->cq_ci & txq->cqe_m] >> 16)
	== cqe->wqe_counter" failed

The free completion queue only contains an expected WQE counter if
RTE_LIBRTE_MLX5_DEBUG is enabled as well. Thus enabling
RTE_ENABLE_ASSERT alone causes the assert to fail.

Compile the assert conditionally only if RTE_ENABLE_ASSERT is enabled.

Fixes: 0afacb04f5 ("common/mlx5: remove NDEBUG")
Cc: stable@dpdk.org

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/mlx5_rxtx.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Raslan Darawsheh Nov. 17, 2020, 4:19 p.m. UTC | #1
Hi,

> -----Original Message-----
> From: Alexander Kozyrev <akozyrev@nvidia.com>
> Sent: Monday, November 16, 2020 9:48 PM
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Raslan Darawsheh <rasland@nvidia.com>; Slava
> Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad <matan@nvidia.com>
> Subject: [PATCH] net/mlx5: fix WQE counter assert in free completion queue
> 
> The following assertion fails in case RTE_ENABLE_ASSERT is enabled:
> PANIC in mlx5_tx_handle_completion():
> assert "(txq->fcqs[txq->cq_ci & txq->cqe_m] >> 16)
> 	== cqe->wqe_counter" failed
> 
> The free completion queue only contains an expected WQE counter if
> RTE_LIBRTE_MLX5_DEBUG is enabled as well. Thus enabling
> RTE_ENABLE_ASSERT alone causes the assert to fail.
> 
> Compile the assert conditionally only if RTE_ENABLE_ASSERT is enabled.
> 
> Fixes: 0afacb04f5 ("common/mlx5: remove NDEBUG")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
> ---
Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh
diff mbox series

Patch

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 844a1c633d..c185c40666 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -2106,8 +2106,10 @@  mlx5_tx_handle_completion(struct mlx5_txq_data *__rte_restrict txq,
 		}
 		/* Normal transmit completion. */
 		MLX5_ASSERT(txq->cq_ci != txq->cq_pi);
+#ifdef RTE_LIBRTE_MLX5_DEBUG
 		MLX5_ASSERT((txq->fcqs[txq->cq_ci & txq->cqe_m] >> 16) ==
 			    cqe->wqe_counter);
+#endif
 		ring_doorbell = true;
 		++txq->cq_ci;
 		last_cqe = cqe;