From: Bob Copeland <me@bobcopeland.com>
Date: Wed, 9 Jan 2013 17:34:56 +0000 (-0500)
Subject: mac80211: add encrypt headroom to PERR frames
X-Git-Tag: v3.8-rc6~20^2~10^2^2~6^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8680451f38a64bd270233b3c0eeb7c45f2b5efe3;p=pandora-kernel.git

mac80211: add encrypt headroom to PERR frames

Mesh PERR action frames are robust and thus may be encrypted, so add
proper head/tailroom to allow this.  Fixes this warning when operating
a Mesh STA on ath5k:

WARNING: at net/mac80211/wpa.c:427 ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]()
Call Trace:
 [<c011c5e7>] warn_slowpath_common+0x63/0x78
 [<c011c60b>] warn_slowpath_null+0xf/0x13
 [<e090621d>] ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]
 [<e090685c>] ieee80211_crypto_ccmp_encrypt+0x1f/0x37 [mac80211]
 [<e0917113>] invoke_tx_handlers+0xcad/0x10bd [mac80211]
 [<e0917665>] ieee80211_tx+0x87/0xb3 [mac80211]
 [<e0918932>] ieee80211_tx_pending+0xcc/0x170 [mac80211]
 [<c0121c43>] tasklet_action+0x3e/0x65

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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