From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 10 Sep 2010 06:42:33 +0000 (+0000)
Subject: sfc: Allow changing the DMA ring sizes dynamically via ethtool
X-Git-Tag: v2.6.37-rc1~147^2~475
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4642610c77b345130d6b5a08c75d23ad98601fd5;p=pandora-kernel.git

sfc: Allow changing the DMA ring sizes dynamically via ethtool

This requires some reorganisation of channel setup and teardown to
ensure that we can always roll-back a failed change.

Based on work by Steve Hodgson <shodgson@solarflare.com>

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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