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From: Alexander Kozyrev <akozyrev@nvidia.com>
To: dev@dpdk.org
Cc: stable@dpdk.org, rasland@nvidia.com, viacheslavo@nvidia.com,
	matan@nvidia.com
Subject: [dpdk-stable] [PATCH] net/mlx5: fix WQE counter assert in free completion queue
Date: Mon, 16 Nov 2020 19:48:15 +0000
Message-ID: <20201116194815.29712-1-akozyrev@nvidia.com> (raw)

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(+)

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;
-- 
2.24.1


             reply	other threads:[~2020-11-16 19:48 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-16 19:48 Alexander Kozyrev [this message]
2020-11-17 16:19 ` Raslan Darawsheh

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