Re: [PATCH net-next V5 3/3] bnxt_en: Add support to collect crash dump via ethtool

[Michael Chan]

On Thu, Oct 31, 2019 at 3:09 AM Sheetal Tigadoli
<sheetal.tigadoli@xxxxxxxxxxxx> wrote:
>
> From: Vasundhara Volam <vasundhara-v.volam@xxxxxxxxxxxx>
>
> Driver supports 2 types of core dumps.
>
> 1. Live dump - Firmware dump when system is up and running.
> 2. Crash dump - Dump which is collected during firmware crash
>                 that can be retrieved after recovery.
> Crash dump is currently supported only on specific 58800 chips
> which can be retrieved using OP-TEE API only, as firmware cannot
> access this region directly.
>
> User needs to set the dump flag using following command before
> initiating the dump collection:
>
>     $ ethtool -W|--set-dump eth0 N
>
> Where N is "0" for live dump and "1" for crash dump
>
> Command to collect the dump after setting the flag:
>
>     $ ethtool -w eth0 data Filename
>
> v3: Modify set_dump to support even when CONFIG_TEE_BNXT_FW=n.
> Also change log message to netdev_info().
>
> Cc: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx>
> Cc: Michael Chan <michael.chan@xxxxxxxxxxxx>
> Signed-off-by: Vasundhara Volam <vasundhara-v.volam@xxxxxxxxxxxx>
> Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@xxxxxxxxxxxx>

Signed-off-by: Michael Chan <michael.chan@xxxxxxxxxxxx>