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-rw-r--r--net/wireless/util.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index ef35f4ef2aa6..2762e8329986 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -309,23 +309,21 @@ unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
}
EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
-static int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
+unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
{
int ae = meshhdr->flags & MESH_FLAGS_AE;
- /* 7.1.3.5a.2 */
+ /* 802.11-2012, 8.2.4.7.3 */
switch (ae) {
+ default:
case 0:
return 6;
case MESH_FLAGS_AE_A4:
return 12;
case MESH_FLAGS_AE_A5_A6:
return 18;
- case (MESH_FLAGS_AE_A4 | MESH_FLAGS_AE_A5_A6):
- return 24;
- default:
- return 6;
}
}
+EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen);
int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
enum nl80211_iftype iftype)
@@ -373,6 +371,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
/* make sure meshdr->flags is on the linear part */
if (!pskb_may_pull(skb, hdrlen + 1))
return -1;
+ if (meshdr->flags & MESH_FLAGS_AE_A4)
+ return -1;
if (meshdr->flags & MESH_FLAGS_AE_A5_A6) {
skb_copy_bits(skb, hdrlen +
offsetof(struct ieee80211s_hdr, eaddr1),
@@ -397,6 +397,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
/* make sure meshdr->flags is on the linear part */
if (!pskb_may_pull(skb, hdrlen + 1))
return -1;
+ if (meshdr->flags & MESH_FLAGS_AE_A5_A6)
+ return -1;
if (meshdr->flags & MESH_FLAGS_AE_A4)
skb_copy_bits(skb, hdrlen +
offsetof(struct ieee80211s_hdr, eaddr1),
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