netdev - Re: [net 04/14] net/mlx5: cmdif, Print info on any firmware cmd failure to tracepoint

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Message-ID: <Y343E18Hoy24Jolg@boxer>
Date:   Wed, 23 Nov 2022 16:06:59 +0100
From:   Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To:     Saeed Mahameed <saeed@...nel.org>
CC:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        "Saeed Mahameed" <saeedm@...dia.com>, <netdev@...r.kernel.org>,
        Tariq Toukan <tariqt@...dia.com>,
        Moshe Shemesh <moshe@...dia.com>,
        Shay Drory <shayd@...dia.com>, Maor Gottlieb <maorg@...dia.com>
Subject: Re: [net 04/14] net/mlx5: cmdif, Print info on any firmware cmd
 failure to tracepoint

On Mon, Nov 21, 2022 at 06:25:49PM -0800, Saeed Mahameed wrote:
> From: Moshe Shemesh <moshe@...dia.com>
> 
> While moving to new CMD API (quiet API), some pre-existing flows may call the new API
> function that in case of error, returns the error instead of printing it as previously done.
> For such flows we bring back the print but to tracepoint this time for sys admins to
> have the ability to check for errors especially for commands using the new quiet API.
> 

WARNING: Possible unwrapped commit description (prefer a maximum 75 chars
per line)


> Tracepoint output example:
>          devlink-1333    [001] .....   822.746922: mlx5_cmd: ACCESS_REG(0x805) op_mod(0x0) failed, status bad resource(0x5), syndrome (0xb06e1f), err(-22)
> 
> Fixes: f23519e542e5 ("net/mlx5: cmdif, Add new api for command execution")
> Signed-off-by: Moshe Shemesh <moshe@...dia.com>
> Reviewed-by: Shay Drory <shayd@...dia.com>
> Reviewed-by: Maor Gottlieb <maorg@...dia.com>
> Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 41 +++++++++--------
>  .../mellanox/mlx5/core/diag/cmd_tracepoint.h  | 45 +++++++++++++++++++
>  include/linux/mlx5/driver.h                   |  1 +
>  3 files changed, 68 insertions(+), 19 deletions(-)
>  create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/diag/cmd_tracepoint.h