Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[pandora-kernel.git] / net / wireless / scan.c

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index b0f0039..0fb1424 100644 (file)
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -228,6 +228,33 @@ const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len)
 }
 EXPORT_SYMBOL(cfg80211_find_ie);
 
+const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
+                                 const u8 *ies, int len)
+{
+       struct ieee80211_vendor_ie *ie;
+       const u8 *pos = ies, *end = ies + len;
+       int ie_oui;
+
+       while (pos < end) {
+               pos = cfg80211_find_ie(WLAN_EID_VENDOR_SPECIFIC, pos,
+                                      end - pos);
+               if (!pos)
+                       return NULL;
+
+               if (end - pos < sizeof(*ie))
+                       return NULL;
+
+               ie = (struct ieee80211_vendor_ie *)pos;
+               ie_oui = ie->oui[0] << 16 | ie->oui[1] << 8 | ie->oui[2];
+               if (ie_oui == oui && ie->oui_type == oui_type)
+                       return pos;
+
+               pos += 2 + ie->len;
+       }
+       return NULL;
+}
+EXPORT_SYMBOL(cfg80211_find_vendor_ie);
+
 static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2)
 {
        const u8 *ie1 = cfg80211_find_ie(num, ies1, len1);