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authorGuy Cohen <guy.cohen@intel.com>2008-01-09 19:12:48 +0200
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:10:41 -0800
commita8bdf29c6cd117644d27677962fe832b33036c77 (patch)
tree4d678ea8b9c670374cf3e1defec1f30c5661c735 /net/mac80211/wme.c
parent69a73829dbb10e7c8554e66a80cb4fde57347fff (diff)
mac80211: Assign correct TID for local bridged packets
This patch assigns correct TID to frames transmitted between two stations in the same BSS in AP mode. The problem is that skb->protocol is not set to ETH_P_IP and it is wrong to use that field at this stage. The fix compares the LLC/Protocol headers explicitly to check if the encapsulated frame is IP frame Signed-off-by: Guy Cohen <guy.cohen@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/wme.c')
-rw-r--r--net/mac80211/wme.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 455fadc3d84..024519522d3 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -28,6 +28,7 @@ struct ieee80211_sched_data
struct sk_buff_head requeued[TC_80211_MAX_QUEUES];
};
+static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0};
/* given a data frame determine the 802.1p/1d tag to use */
static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
@@ -54,12 +55,12 @@ static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd)
return skb->priority - 256;
/* check there is a valid IP header present */
- offset = ieee80211_get_hdrlen_from_skb(skb) + 8 /* LLC + proto */;
- if (skb->protocol != htons(ETH_P_IP) ||
- skb->len < offset + sizeof(*ip))
+ offset = ieee80211_get_hdrlen_from_skb(skb);
+ if (skb->len < offset + sizeof(llc_ip_hdr) + sizeof(*ip) ||
+ memcmp(skb->data + offset, llc_ip_hdr, sizeof(llc_ip_hdr)))
return 0;
- ip = (struct iphdr *) (skb->data + offset);
+ ip = (struct iphdr *) (skb->data + offset + sizeof(llc_ip_hdr));
dscp = ip->tos & 0xfc;
if (dscp & 0x1c)