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authorJohn W. Linville <linville@tuxdriver.com>2010-04-15 16:21:34 -0400
committerJohn W. Linville <linville@tuxdriver.com>2010-04-15 16:21:34 -0400
commit5c01d5669356e13f0fb468944c1dd4c6a7e978ad (patch)
treefa43345288d7b25fac92b3b35360a177c4947313 /net/wireless/util.c
parentfea069152614cdeefba4b2bf80afcddb9c217fc8 (diff)
parenta5e944f1d955f3819503348426763e21e0413ba6 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts: Documentation/feature-removal-schedule.txt drivers/net/wireless/ath/ath5k/phy.c drivers/net/wireless/wl12xx/wl1271_main.c
Diffstat (limited to 'net/wireless/util.c')
-rw-r--r--net/wireless/util.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index d3574a4eb3b..3416373a9c0 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -331,11 +331,18 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
if (iftype == NL80211_IFTYPE_MESH_POINT) {
struct ieee80211s_hdr *meshdr =
(struct ieee80211s_hdr *) (skb->data + hdrlen);
- hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
+ /* 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) {
- memcpy(dst, meshdr->eaddr1, ETH_ALEN);
- memcpy(src, meshdr->eaddr2, ETH_ALEN);
+ skb_copy_bits(skb, hdrlen +
+ offsetof(struct ieee80211s_hdr, eaddr1),
+ dst, ETH_ALEN);
+ skb_copy_bits(skb, hdrlen +
+ offsetof(struct ieee80211s_hdr, eaddr2),
+ src, ETH_ALEN);
}
+ hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
}
break;
case cpu_to_le16(IEEE80211_FCTL_FROMDS):
@@ -347,9 +354,14 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
if (iftype == NL80211_IFTYPE_MESH_POINT) {
struct ieee80211s_hdr *meshdr =
(struct ieee80211s_hdr *) (skb->data + hdrlen);
- hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
+ /* 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)
- memcpy(src, meshdr->eaddr1, ETH_ALEN);
+ skb_copy_bits(skb, hdrlen +
+ offsetof(struct ieee80211s_hdr, eaddr1),
+ src, ETH_ALEN);
+ hdrlen += ieee80211_get_mesh_hdrlen(meshdr);
}
break;
case cpu_to_le16(0):
@@ -358,7 +370,7 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
break;
}
- if (unlikely(skb->len - hdrlen < 8))
+ if (!pskb_may_pull(skb, hdrlen + 8))
return -1;
payload = skb->data + hdrlen;