[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: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
index d8bb8f7..6394ae4 100644 (file)
--- a/include/net/ieee80211.h
+++ b/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 {

diff --git a/net/ieee80211/ieee80211_rx.c b/net/ieee80211/ieee80211_rx.c
index 6bbaa44..cae55e5 100644 (file)
--- a/net/ieee80211/ieee80211_rx.c
+++ b/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;