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From b994a9349762bcaad79091144ec96ce7a4b8d5a7 Mon Sep 17 00:00:00 2001
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From: Alaa Hleihel <ahleihel@redhat.com>
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Date: Tue, 12 May 2020 10:54:34 -0400
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Subject: [PATCH 164/312] [netdrv] net/mlx5e: Fix missing reset of SW metadata
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in Striding RQ reset
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Message-id: <20200512105530.4207-69-ahleihel@redhat.com>
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Patchwork-id: 306940
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Patchwork-instance: patchwork
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O-Subject: [RHEL8.3 BZ 1789382 068/124] net/mlx5e: Fix missing reset of SW metadata in Striding RQ reset
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Bugzilla: 1789382
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RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
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RH-Acked-by: Kamal Heib <kheib@redhat.com>
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RH-Acked-by: Jarod Wilson <jarod@redhat.com>
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Bugzilla: http://bugzilla.redhat.com/1789382
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Upstream: v5.6
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commit 39369fd536d485a99a59d8e357c0d4d3ce19a3b8
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Author: Aya Levin <ayal@mellanox.com>
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Date: Thu Mar 12 12:35:32 2020 +0200
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net/mlx5e: Fix missing reset of SW metadata in Striding RQ reset
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When resetting the RQ (moving RQ state from RST to RDY), the driver
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resets the WQ's SW metadata.
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In striding RQ mode, we maintain a field that reflects the actual
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expected WQ head (including in progress WQEs posted to the ICOSQ).
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It was mistakenly not reset together with the WQ. Fix this here.
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Fixes: 8276ea1353a4 ("net/mlx5e: Report and recover from CQE with error on RQ")
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Signed-off-by: Aya Levin <ayal@mellanox.com>
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Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
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Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Signed-off-by: Alaa Hleihel <ahleihel@redhat.com>
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Signed-off-by: Frantisek Hrbata <fhrbata@redhat.com>
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---
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drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
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index a226277b0980..f07b1399744e 100644
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--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
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@@ -181,10 +181,12 @@ mlx5e_tx_dma_unmap(struct device *pdev, struct mlx5e_sq_dma *dma)
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static inline void mlx5e_rqwq_reset(struct mlx5e_rq *rq)
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{
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- if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
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+ if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
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mlx5_wq_ll_reset(&rq->mpwqe.wq);
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- else
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+ rq->mpwqe.actual_wq_head = 0;
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+ } else {
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mlx5_wq_cyc_reset(&rq->wqe.wq);
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+ }
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}
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/* SW parser related functions */
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--
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2.13.6
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