mac80211: add length check in ieee80211_is_robust_mgmt_frame()

[deliverable/linux.git] / include / linux / ieee80211.h

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 776cbb80d098d37e90c0bf0e8c37736ab961f338..923c478030a3c245aa2c186fd7f0955ce1a2401b 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1857,6 +1857,7 @@ enum ieee80211_key_len {
        WLAN_KEY_LEN_CCMP = 16,
        WLAN_KEY_LEN_TKIP = 32,
        WLAN_KEY_LEN_AES_CMAC = 16,
+       WLAN_KEY_LEN_SMS4 = 32,
 };
 
 #define IEEE80211_WEP_IV_LEN           4
@@ -1902,6 +1903,7 @@ enum ieee80211_tdls_actioncode {
 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED BIT(6)
 
 #define WLAN_EXT_CAPA8_OPMODE_NOTIF    BIT(6)
+#define WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED    BIT(7)
 
 /* TDLS specific payload type in the LLC/SNAP header */
 #define WLAN_TDLS_SNAP_RFTYPE  0x2
@@ -2190,10 +2192,10 @@ static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
 }
 
 /**
- * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
+ * _ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
  * @hdr: the frame (buffer must include at least the first octet of payload)
  */
-static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
+static inline bool _ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
 {
        if (ieee80211_is_disassoc(hdr->frame_control) ||
            ieee80211_is_deauth(hdr->frame_control))
@@ -2221,6 +2223,17 @@ static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
        return false;
 }
 
+/**
+ * ieee80211_is_robust_mgmt_frame - check if skb contains a robust mgmt frame
+ * @skb: the skb containing the frame, length will be checked
+ */
+static inline bool ieee80211_is_robust_mgmt_frame(struct sk_buff *skb)
+{
+       if (skb->len < 25)
+               return false;
+       return _ieee80211_is_robust_mgmt_frame((void *)skb->data);
+}
+
 /**
  * ieee80211_is_public_action - check if frame is a public action frame
  * @hdr: the frame