From: "Sébastien Bocahu" <sbu@reportlinker.com>
To: Michael Chan <mchan@broadcom.com>
Cc: harish.patil@qlogic.com, davem@davemloft.net, netdev@vger.kernel.org
Subject: Re: Linux kernel commit breaks IPMI on iface downing
Date: Fri, 14 Aug 2015 11:22:22 +0200 [thread overview]
Message-ID: <CAJPaPGUsyHwaaTuUGcV5BMsSDcw1T7XQ9GVy5KwsMao3k8u+Kg@mail.gmail.com> (raw)
In-Reply-To: <1439515834.7684.24.camel@LTIRV-MCHAN1.corp.ad.broadcom.com>
The BNX2 firmware has already been updated to the latest version
available from Dell.
root@debian:~# ethtool -i eth0 | grep firmware
firmware-version: 6.4.5 bc 5.2.3 NCSI 2.0.11
2015-08-14 3:30 GMT+02:00 Michael Chan <mchan@broadcom.com>:
> +netdev and Harish who is the current maintainer of bnx2 at qlogic.
>
> The patch in question effectively just removes the
> bnx2_set_power_state() call during "ip link set down". If there is
> IPMI, the firmware should know the link needs to stay up when the driver
> resets the device during bnx2_close(). This should be a very common
> scenario. Please provide the firmware versions to Harish with ethtool
> -i. Perhaps upgrading the firmware can resolve this issue.
>
> On Thu, 2015-08-13 at 15:47 +0200, Sébastien Bocahu wrote:
>> Hi,
>>
>> Being unable to install Debian Jessie via IPMI on mainstream Dell R410
>> servers that used to be well supported by Debian Wheezy, I tracked the
>> problem down to a specific commit in the Linux kernel, specifically in
>> the bnx2 driver.
>> The issue is that "ip link set eth0 down" takes the Ethernet part of
>> the BMC down (shared NIC for BMC+eth0), cutting off the IPMI session.
>> The BMC gets back only after power cycling.
>>
>> Hardware: Dell R410 w/ a Broadcom 5716 NIC:
>> Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit
>> Ethernet (rev 20) )
>> Part number: BCM95716C1
>> Vendor specific: 6.4.5 (Firmware has been updated to the latest
>> version available by Dell's support website)
>>
>> I built many kernels to track which change caused the issue and it
>> seems that's :
>> 25bfb1dd4ba3b2d9a49ce9d9b0cd7be1840e15ed (bnx2: Add pci shutdown handler.)
>>
>> Before, 'ip link set eth0 down' would just cause 2/3s of packet loss
>> but IPMI would still be working afterwards.
>>
>> I'm available for more informations and/or testing if needed.
>>
>> Thanks !
>>
>>
>>
>
>
--
Sébastien Bocahu
IT infrastructure manager
4, Rue Montrochet - 69002 - Lyon, France
+33 (0)437651704 - Phone
ReportLinker.com
next prev parent reply other threads:[~2015-08-14 9:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAJPaPGU2_68J4BZanm+Lw3O+WTiwO3swegh5grP5Bn-XprLOwg@mail.gmail.com>
2015-08-14 1:30 ` Linux kernel commit breaks IPMI on iface downing Michael Chan
2015-08-14 9:22 ` Sébastien Bocahu [this message]
2015-09-04 7:55 ` Sébastien Bocahu
2015-09-04 8:29 ` Michael Chan
2015-09-09 1:33 ` Harish Patil
2016-08-02 7:58 ` Chen-Yu Tsai
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