From: Eric Dumazet <edumazet@google.com>
Date: Tue, 5 Feb 2013 20:22:20 +0000 (+0000)
Subject: net: reset mac header in dev_start_xmit()
X-Git-Tag: v3.9-rc1~139^2~144
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d1ccff627806829c46091bd9d9835302a3fbf5f;p=pandora-kernel.git

net: reset mac header in dev_start_xmit()

On 64 bit arches :

There is a off-by-one error in qdisc_pkt_len_init() because
mac_header is not set in xmit path.

skb_mac_header() returns an out of bound value that was
harmless because hdr_len is an 'unsigned int'

On 32bit arches, the error is abysmal.

This patch is also a prereq for "macvlan: add multicast filter"

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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