From: Amir Vadai <amirv@mellanox•com>
To: Jean Delvare <jdelvare@suse•de>,
Or Gerlitz <ogerlitz@mellanox•com>,
Jack Morgenstein <jackm@dev•mellanox.co.il>
Cc: "David S. Miller" <davem@davemloft•net>, netdev <netdev@vger•kernel.org>
Subject: Re: Manual loading of mlx4_en
Date: Tue, 29 Jul 2014 13:16:42 +0300 [thread overview]
Message-ID: <53D7748A.6040800@mellanox.com> (raw)
In-Reply-To: <1406627612.4498.16.camel@chaos.site>
Hi,
On 7/29/2014 12:53 PM, Jean Delvare wrote:
> Hi all,
>
> I have a usability concern with the mlx4_en ethernet network driver. The
> module aliases for all the supported devices are on the mlx4_core
> module, so mlx4_core gets loaded automatically, but mlx4_en does not. I
> must load mlx4_en manually (kernel 3.12.)
>
> May I ask why the mlx4 driver was split into mlx4_core and mlx4_en in
> the first place?
Connect-X card can support both Ethernet and Infiniband link layer - you
can switch between link layers without replacing the hardware.
To prevent code duplication, there is a single lower layer driver -
mlx4_core and two separate upper layer drivers - mlx4_en and mlx4_ib.
Since kernel 3.13 mlx4_core is loading automatically the upper layer
driver using request_module():
b046ffe net/mlx4_core: Load higher level modules according to ports type
>
> I have worked around the problem with the following modprobe directive:
>
> install mlx4_core /sbin/modprobe --ignore-install mlx4_core && /sbin/modprobe mlx4_en
>
> But this is kind of a hack and I would expect the right driver to load
> automatically without magic.
>
> Shouldn't the module aliases be attached to mlx4_en instead of
> mlx4_core?
>
> Thanks,
>
Amir
next prev parent reply other threads:[~2014-07-29 10:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-29 9:53 Manual loading of mlx4_en Jean Delvare
2014-07-29 10:16 ` Amir Vadai [this message]
2014-07-29 10:34 ` Jean Delvare
2014-07-29 10:44 ` Amir Vadai
2014-07-29 12:06 ` Jean Delvare
2014-07-29 13:42 ` Amir Vadai
2014-07-30 2:14 ` Benjamin Poirier
2014-07-30 7:56 ` Amir Vadai
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