Author: rpaulo
Date: Thu Jun 10 20:58:34 2010
New Revision: 209016
URL: http://svn.freebsd.org/changeset/base/209016
Log:
Some odd APs send beacons on the same TX queue as non-beacons. This breaks
802.11 duplicate detection. Upon looking at the standard, we discover
that 802.11-2007 says:
"A receiving QoS STA is also required to keep only the most recent
cache entry per<Address 2, TID, sequence-number> triple, storing only
the most recently received fragment number for that triple. A receiving
STA may omit tuples obtained from broadcast/multicast or ATIM frames
from the cache."
To fix this, we just disable duplicate detection for multicast/broadcast
frames.
Reviewed by: sam
MFC after: 4 weeks
Obtained from: DragonFly
Modified:
head/sys/net80211/ieee80211_sta.c
Modified: head/sys/net80211/ieee80211_sta.c
==============================================================================
--- head/sys/net80211/ieee80211_sta.c Thu Jun 10 20:54:53 2010
(r209015)
+++ head/sys/net80211/ieee80211_sta.c Thu Jun 10 20:58:34 2010
(r209016)
@@ -584,7 +584,7 @@ sta_input(struct ieee80211_node *ni, str
}
IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
ni->ni_noise = nf;
- if (HAS_SEQ(type)) {
+ if (HAS_SEQ(type) !IEEE80211_IS_MULTICAST(wh->i_addr1)) {
uint8_t tid = ieee80211_gettid(wh);
if (IEEE80211_QOS_HAS_SEQ(wh) &&
TID_TO_WME_AC(tid) >= WME_AC_VI)
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