linux-kernel - Re: [PATCH rdma-next] RDMA/mlx5: print wc status on CQE error and dump needed

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Message-ID: <20220105190633.GC2861973@nvidia.com>
Date:   Wed, 5 Jan 2022 15:06:33 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Dust Li <dust.li@...ux.alibaba.com>
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        Leon Romanovsky <leon@...nel.org>
Subject: Re: [PATCH rdma-next] RDMA/mlx5: print wc status on CQE error and
 dump needed

On Mon, Dec 27, 2021 at 08:38:06PM +0800, Dust Li wrote:
> mlx5_handle_error_cqe() only dump the content of the CQE
> which is raw hex data, and not straighforward for debug.
> Print WC status message when we got CQE error and dump is
> need.
> 
> Here is an example of how the dmesg log looks like with this:
> [166755.330649] infiniband mlx5_0: mlx5_handle_error_cqe:333:(pid 0): WC error: 10, message: remote access error
> [166755.332323] infiniband mlx5_0: dump_cqe:272:(pid 0): dump error cqe
> [166755.332944] 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [166755.333574] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [166755.334202] 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [166755.334837] 00000030: 00 00 00 00 00 00 88 13 08 03 61 b3 1e a1 42 d3
> 
> Signed-off-by: Dust Li <dust.li@...ux.alibaba.com>
> Acked-by: Leon Romanovsky <leonro@...dia.com>
> ---
>  drivers/infiniband/hw/mlx5/cq.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

Applied to for-next, thanks

Jason