From: Roland Dreier <roland@purestorage.com>
Date: Tue, 7 Feb 2012 14:51:21 +0000 (+0000)
Subject: IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses
X-Git-Tag: v3.2.9~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=afd87adacb5de00768b2e54f0bd851278f2e6179;p=pandora-kernel.git

IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses

[ Upstream commit 936d7de3d736e0737542641269436f4b5968e9ef ]

Commit a0417fa3a18a ("net: Make qdisc_skb_cb upper size bound
explicit.") made it possible for a netdev driver to use skb->cb
between its header_ops.create method and its .ndo_start_xmit
method.  Use this in ipoib_hard_header() to stash away the LL address
(GID + QPN), instead of the "ipoib_pseudoheader" hack.  This allows
IPoIB to stop lying about its hard_header_len, which will let us fix
the L2 check for GRO.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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