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Message-ID: <CACKFLim+ru8c1JfB+Q3miyWid48OTPn_xHrrjG_z_OznjVWTJw@mail.gmail.com>
Date:   Thu, 31 Oct 2019 11:01:17 -0700
From:   Michael Chan <michael.chan@...adcom.com>
To:     Sheetal Tigadoli <sheetal.tigadoli@...adcom.com>
Cc:     Rafał Miłecki <zajec5@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Simek <michal.simek@...inx.com>,
        Rajan Vaja <rajan.vaja@...inx.com>,
        Scott Branden <scott.branden@...adcom.com>,
        Ray Jui <ray.jui@...adcom.com>,
        Vikram Prakash <vikram.prakash@...adcom.com>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Vikas Gupta <vikas.gupta@...adcom.com>,
        Vasundhara Volam <vasundhara-v.volam@...adcom.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        tee-dev@...ts.linaro.org,
        bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
        Netdev <netdev@...r.kernel.org>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: Re: [PATCH net-next V5 3/3] bnxt_en: Add support to collect crash
 dump via ethtool

On Thu, Oct 31, 2019 at 3:09 AM Sheetal Tigadoli
<sheetal.tigadoli@...adcom.com> wrote:
>
> From: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
>
> 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@...ronome.com>
> Cc: Michael Chan <michael.chan@...adcom.com>
> Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
> Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@...adcom.com>

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

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