netdev - Re: [PATCH net] net/mlx5: Fix SQ offset in QPs with small RQ

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Date:   Tue, 04 Sep 2018 12:18:03 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     tariqt@...lanox.com
Cc:     netdev@...r.kernel.org, eranbe@...lanox.com, saeedm@...lanox.com,
        alaa@...lanox.com
Subject: Re: [PATCH net] net/mlx5: Fix SQ offset in QPs with small RQ

From: Tariq Toukan <tariqt@...lanox.com>
Date: Mon,  3 Sep 2018 18:06:24 +0300

> Correct the formula for calculating the RQ page remainder,
> which should be in byte granularity.  The result will be
> non-zero only for RQs smaller than PAGE_SIZE, as an RQ size
> is a power of 2.
> 
> Divide this by the SQ stride (MLX5_SEND_WQE_BB) to get the
> SQ offset in strides granularity.
> 
> Fixes: d7037ad73daa ("net/mlx5: Fix QP fragmented buffer allocation")
> Signed-off-by: Tariq Toukan <tariqt@...lanox.com>
> Reviewed-by: Eran Ben Elisha <eranbe@...lanox.com>
> Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/wq.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> Hi Dave,
> Please queue for -stable v4.18.

Applied and queued up for -stable, thanks.