[PATCH] Changed 802.11 headers to use ieee80211_info_element[0]

Changed 802.11 headers to use ieee80211_info_element as zero sized
array so that sizeof calculations do not account for IE sizes.
Signed-off-by: NJames Ketrenos <jketreno@linux.intel.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

include/net/ieee80211.h

@@ -538,7 +538,7 @@ struct ieee80211_authentication {
 	__le16 algorithm;
 	__le16 transaction;
 	__le16 status;
-	struct ieee80211_info_element info_element;
+	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
 struct ieee80211_probe_response {
@@ -546,14 +546,14 @@ struct ieee80211_probe_response {
 	u32 time_stamp[2];
 	__le16 beacon_interval;
 	__le16 capability;
-	struct ieee80211_info_element info_element;
+	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
 struct ieee80211_assoc_request_frame {
 	__le16 capability;
 	__le16 listen_interval;
 	u8 current_ap[ETH_ALEN];
-	struct ieee80211_info_element info_element;
+	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
 struct ieee80211_assoc_response_frame {
@@ -561,7 +561,7 @@ struct ieee80211_assoc_response_frame {
 	__le16 capability;
 	__le16 status;
 	__le16 aid;
-	struct ieee80211_info_element info_element;	/* supported rates */
+	struct ieee80211_info_element info_element[0];	/* supported rates */
 } __attribute__ ((packed));
 
 struct ieee80211_txb {

net/ieee80211/ieee80211_rx.c

@@ -822,7 +822,7 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct i
 	network->wpa_ie_len = 0;
 	network->rsn_ie_len = 0;
 
-	info_element = &beacon->info_element;
+	info_element = beacon->info_element;
 	left = stats->len - ((void *)info_element - (void *)beacon);
 	while (left >= sizeof(struct ieee80211_info_element_hdr)) {
 		if (sizeof(struct ieee80211_info_element_hdr) +
@@ -1050,7 +1050,7 @@ static inline void ieee80211_process_probe_response(struct ieee80211_device
 	struct ieee80211_network *target;
 	struct ieee80211_network *oldest = NULL;
 #ifdef CONFIG_IEEE80211_DEBUG
-	struct ieee80211_info_element *info_element = &beacon->info_element;
+	struct ieee80211_info_element *info_element = beacon->info_element;
 #endif
 	unsigned long flags;