netdev - Re: [PATCH] mlx4: Fixing Ethernet unicast packet steering

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Message-ID: <CAL1RGDXkbWjC1W0AcjXo6jm9bh1mtnx8nStCZL+ty4ywcCQ0yw@mail.gmail.com>
Date:	Wed, 3 Aug 2011 19:53:40 -0700
From:	Roland Dreier <roland@...nel.org>
To:	Yevgeny Petrilin <yevgenyp@...lanox.co.il>
Cc:	netdev@...r.kernel.org, linux-rdma@...r.kernel.org
Subject: Re: [PATCH] mlx4: Fixing Ethernet unicast packet steering

Hi Yevgeny!

Actually on further testing it seems that things are still not perfect
with my old firmware at least.

If I do "ifconfig eth6 mtu 1450" (where eth6 is a mlx4_en interface)
then I am no longer able to get traffic through the interface; if I
have a ping running it stops immediately.  It seems any mtu change
triggers this (increasing the mtu above the default has the same
effect, and restoring the mtu to the default doesn't fix it).

Haven't tried to debug further.

 - R.
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