netdev - [PATCH net-next 14/15] net/mlx5e: Add recovery flow in case of error CQE

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Message-Id: <20220107002956.74849-15-saeed@kernel.org>
Date:   Thu,  6 Jan 2022 16:29:55 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Gal Pressman <gal@...dia.com>,
        Aya Levin <ayal@...dia.com>, Saeed Mahameed <saeedm@...dia.com>
Subject: [PATCH net-next 14/15] net/mlx5e: Add recovery flow in case of error CQE

From: Gal Pressman <gal@...dia.com>

The rep legacy RQ completion handling was missing the appropriate
handling of error CQEs (dump the CQE and queue a recover work), fix it
by calling trigger_report() when needed.

Since all CQE handling flows do the exact same error CQE handling,
extract it to a common helper function.

Signed-off-by: Gal Pressman <gal@...dia.com>
Reviewed-by: Aya Levin <ayal@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/en_rx.c   | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index f09b57c31ed7..96e260fd7987 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -1603,6 +1603,12 @@ static void trigger_report(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
 	}
 }
 
+static void mlx5e_handle_rx_err_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
+{
+	trigger_report(rq, cqe);
+	rq->stats->wqe_err++;
+}
+
 static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
 {
 	struct mlx5_wq_cyc *wq = &rq->wqe.wq;
@@ -1616,8 +1622,7 @@ static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
 	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
 
 	if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
-		trigger_report(rq, cqe);
-		rq->stats->wqe_err++;
+		mlx5e_handle_rx_err_cqe(rq, cqe);
 		goto free_wqe;
 	}
 
@@ -1670,7 +1675,7 @@ static void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
 	cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
 
 	if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
-		rq->stats->wqe_err++;
+		mlx5e_handle_rx_err_cqe(rq, cqe);
 		goto free_wqe;
 	}
 
@@ -1719,8 +1724,7 @@ static void mlx5e_handle_rx_cqe_mpwrq_rep(struct mlx5e_rq *rq, struct mlx5_cqe64
 	wi->consumed_strides += cstrides;
 
 	if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
-		trigger_report(rq, cqe);
-		rq->stats->wqe_err++;
+		mlx5e_handle_rx_err_cqe(rq, cqe);
 		goto mpwrq_cqe_out;
 	}
 
@@ -1988,8 +1992,7 @@ static void mlx5e_handle_rx_cqe_mpwrq_shampo(struct mlx5e_rq *rq, struct mlx5_cq
 	wi->consumed_strides += cstrides;
 
 	if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
-		trigger_report(rq, cqe);
-		stats->wqe_err++;
+		mlx5e_handle_rx_err_cqe(rq, cqe);
 		goto mpwrq_cqe_out;
 	}
 
@@ -2058,8 +2061,7 @@ static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cq
 	wi->consumed_strides += cstrides;
 
 	if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
-		trigger_report(rq, cqe);
-		rq->stats->wqe_err++;
+		mlx5e_handle_rx_err_cqe(rq, cqe);
 		goto mpwrq_cqe_out;
 	}
 
-- 
2.33.1