madwifi: add some roaming fixes by ubnt

SVN-Revision: 11927

package/madwifi/patches/367-roaming.patch

@@ -0,0 +1,77 @@
+Patch adapted from ubnt madwifi patchset
+
+--- a/net80211/ieee80211_node.c
++++ b/net80211/ieee80211_node.c
+@@ -659,7 +659,7 @@
+ 		 */
+ 		if (canreassoc) {
+ 			vap->iv_nsparams.newstate = IEEE80211_S_ASSOC;
+-			vap->iv_nsparams.arg = 0;
++			vap->iv_nsparams.arg = IEEE80211_FC0_SUBTYPE_REASSOC_REQ;
+ 			IEEE80211_SCHEDULE_TQUEUE(&vap->iv_stajoin1tq);
+ 		} else {
+ 			vap->iv_nsparams.newstate = IEEE80211_S_AUTH;
+--- a/net80211/ieee80211_scan_sta.c
++++ b/net80211/ieee80211_scan_sta.c
+@@ -748,14 +748,17 @@
+  * a reference to an entry w/o holding the lock on the table.
+  */
+ static struct sta_entry *
+-sta_lookup(struct sta_table *st, const u_int8_t macaddr[IEEE80211_ADDR_LEN])
++sta_lookup(struct sta_table *st, const u_int8_t macaddr[IEEE80211_ADDR_LEN], struct ieee80211_scan_ssid* essid)
+ {
+ 	struct sta_entry *se;
+ 	int hash = STA_HASH(macaddr);
+ 
+ 	SCAN_STA_LOCK_IRQ(st);
+ 	LIST_FOREACH(se, &st->st_hash[hash], se_hash)
+-		if (IEEE80211_ADDR_EQ(se->base.se_macaddr, macaddr))
++		if (IEEE80211_ADDR_EQ(se->base.se_macaddr, macaddr) &&
++		    (essid->len == se->base.se_ssid[1] &&
++		     !memcmp(se->base.se_ssid+2, essid->ssid,
++			     se->base.se_ssid[1])))
+ 			break;
+ 	SCAN_STA_UNLOCK_IRQ(st);
+ 
+@@ -772,7 +775,7 @@
+ 	u_int8_t roamRate, curRate;
+ 	int8_t roamRssi, curRssi;
+ 
+-	se = sta_lookup(st, ni->ni_macaddr);
++	se = sta_lookup(st, ni->ni_macaddr, ss->ss_ssid);
+ 	if (se == NULL) {
+ 		/* XXX something is wrong */
+ 		return;
+@@ -866,8 +869,8 @@
+ 	 */
+ 	KASSERT(vap->iv_opmode == IEEE80211_M_STA,
+ 		("wrong mode %u", vap->iv_opmode));
+-	/* XXX turn this off until the ap release is cut */
+-	if (0 && vap->iv_ic->ic_roaming == IEEE80211_ROAMING_AUTO &&
++	if (vap->iv_opmode == IEEE80211_M_STA &&
++	    vap->iv_ic->ic_roaming == IEEE80211_ROAMING_AUTO &&
+ 	    vap->iv_state >= IEEE80211_S_RUN)
+ 		/* XXX vap is implicit */
+ 		sta_roam_check(ss, vap);
+@@ -922,7 +925,11 @@
+ 	struct sta_table *st = ss->ss_priv;
+ 	struct sta_entry *se;
+ 
+-	se = sta_lookup(st, macaddr);
++	/* Let outside apps to decide what peer is blacklisted */
++	if (ss->ss_vap->iv_ic->ic_roaming == IEEE80211_ROAMING_MANUAL)
++		return;
++
++	se = sta_lookup(st, macaddr, ss->ss_ssid);
+ 	if (se != NULL) {
+ 		se->se_fails++;
+ 		se->se_lastfail = jiffies;
+@@ -939,7 +946,7 @@
+ 	struct sta_table *st = ss->ss_priv;
+ 	struct sta_entry *se;
+ 
+-	se = sta_lookup(st, macaddr);
++	se = sta_lookup(st, macaddr, ss->ss_ssid);
+ 	if (se != NULL) {
+ #if 0
+ 		se->se_fails = 0;