fix madwifi packet injection

This patch from madwifi commit 3337 makes packet injection work.

Signed-off-by: Petr Liebmann <petrliebman@googlemail.com>

SVN-Revision: 12048

package/madwifi/patches/408-changeset_r3337.patch

@@ -0,0 +1,34 @@
+--- a/THANKS
++++ b/THANKS
+@@ -129,6 +129,7 @@
+ jhansen
+ Benoit Papillault
+ Russell Harmon
++Alessandro Erta
+ 
+ Apologies to anyone whose name was unintentionally left off.
+ Please let us know if you think your name should be mentioned here!
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -2964,7 +2964,7 @@
+ 	struct ath_softc *sc = dev->priv;
+ 	struct ath_hal *ah = sc->sc_ah;
+ 	struct ieee80211_phy_params *ph = (struct ieee80211_phy_params *)
+-		(SKB_CB(skb) + sizeof(struct ieee80211_cb));
++		(SKB_CB(skb) + 1); /* NB: SKB_CB casts to CB struct*. */
+ 	const HAL_RATE_TABLE *rt;
+ 	unsigned int pktlen, hdrlen, try0, power;
+ 	HAL_PKT_TYPE atype;
+--- a/net80211/ieee80211_monitor.c
++++ b/net80211/ieee80211_monitor.c
+@@ -128,8 +128,8 @@
+ void
+ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
+ {
+-	struct ieee80211_phy_params *ph =
+-		(struct ieee80211_phy_params *) (SKB_CB(skb) + sizeof(struct ieee80211_cb));
++	struct ieee80211_phy_params *ph = (struct ieee80211_phy_params *)
++		(SKB_CB(skb) + 1); /* NB: SKB_CB casts to CB struct*. */
+ 	SKB_CB(skb)->flags = M_RAW;
+ 	SKB_CB(skb)->ni = NULL;
+ 	SKB_CB(skb)->next = NULL;