Node cache eviction is too agressive, possibly kicking off associated
stations for no good reason. I missed that associated stations are in
state IEEE80211_S_RUN rather than IEEE80211_S_ASSOC (which means "trying
to associate").
Also compile the debug message shown when a node is evicted from the
cache to make such problems easier to spot (won't affect install media
as it is protected by IEEE80211_STA_ONLY).
Index: ieee80211_node.c
===================================================================
RCS file: /cvs/src/sys/net80211/ieee80211_node.c,v
retrieving revision 1.70
diff -u -p -r1.70 ieee80211_node.c
--- ieee80211_node.c 16 Jul 2012 14:51:46 -0000 1.70
+++ ieee80211_node.c 18 Jul 2012 10:24:59 -0000
@@ -1176,12 +1176,12 @@ ieee80211_clean_nodes(struct ieee80211co
ic->ic_state == IEEE80211_S_RUN) {
if (cache_timeout) {
if (ni->ni_state != IEEE80211_STA_COLLECT &&
- (ni->ni_state == IEEE80211_STA_ASSOC ||
+ (ni->ni_state >= IEEE80211_STA_ASSOC ||
ni->ni_inact < IEEE80211_INACT_MAX))
continue;
} else {
if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
- ((ni->ni_state == IEEE80211_STA_ASSOC &&
+ ((ni->ni_state >= IEEE80211_STA_ASSOC &&
ni->ni_inact < IEEE80211_INACT_MAX) ||
(ni->ni_state == IEEE80211_STA_AUTH &&
ni->ni_inact == 0)))
@@ -1194,9 +1194,10 @@ ieee80211_clean_nodes(struct ieee80211co
continue;
}
}
+ if (ifp->if_flags & IFF_DEBUG)
+ printf("%s: station %s purged from node cache\n",
+ ifp->if_xname, ether_sprintf(ni->ni_macaddr));
#endif
- DPRINTF(("station %s purged from LRU cache\n",
- ether_sprintf(ni->ni_macaddr)));
/*
* If we're hostap and the node is authenticated, send
* a deauthentication frame. The node will be freed when
