+This patch causes STA mode interfaces to disassociate if transmission of assoc/auth
+critical packets failed.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+Index: madwifi-trunk-r3776/ath/if_ath.c
+===================================================================
+--- madwifi-trunk-r3776.orig/ath/if_ath.c 2008-07-17 03:53:09.000000000 +0200
++++ madwifi-trunk-r3776/ath/if_ath.c 2008-07-17 04:00:42.000000000 +0200
+@@ -8272,6 +8272,18 @@
+ #endif
+ if (ts->ts_status & HAL_TXERR_XRETRY) {
+ sc->sc_stats.ast_tx_xretries++;
++ if (SKB_CB(bf->bf_skb)->auth_pkt && (ni->ni_vap->iv_opmode == IEEE80211_M_STA)) {
++ struct ieee80211com *ic = &sc->sc_ic;
++
++ /* if roaming is enabled, try reassociating, otherwise
++ * disassociate and go back to the scan state */
++ IEEE80211_VAPS_LOCK_BH(ic);
++ if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
++ ni->ni_vap->iv_newstate(ni->ni_vap, IEEE80211_S_ASSOC, 1);
++ else
++ ni->ni_vap->iv_newstate(ni->ni_vap, IEEE80211_S_SCAN, 0);
++ IEEE80211_VAPS_UNLOCK_BH(ic);
++ }
+ if (ni->ni_flags & IEEE80211_NODE_UAPSD_TRIG) {
+ ni->ni_stats.ns_tx_eosplost++;
+ DPRINTF(sc, ATH_DEBUG_UAPSD,
+Index: madwifi-trunk-r3776/net80211/ieee80211_linux.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_linux.c 2008-07-17 00:49:54.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_linux.c 2008-07-17 04:01:27.000000000 +0200
+@@ -158,6 +158,7 @@
+
+ SKB_NI(skb) = NULL;
+ SKB_CB(skb)->flags = 0;
++ SKB_CB(skb)->auth_pkt = 0;
+
+ skb_reserve(skb, sizeof(struct ieee80211_frame));
+ *frm = skb_put(skb, pktlen);
+Index: madwifi-trunk-r3776/net80211/ieee80211_linux.h
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_linux.h 2008-07-17 00:53:20.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_linux.h 2008-07-17 04:02:15.000000000 +0200
+@@ -411,6 +411,7 @@
+ #define M_SKB_TRACKED 0x20
+ void (*next_destructor)(struct sk_buff *skb);
+ #endif
++ u_int8_t auth_pkt;
+ };
+
+ struct __assert {
+Index: madwifi-trunk-r3776/net80211/ieee80211_output.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_output.c 2008-07-17 02:35:10.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_output.c 2008-07-17 04:00:42.000000000 +0200
+@@ -773,6 +773,8 @@
+ else
+ hdrsize = sizeof(struct ieee80211_frame);
+
++ SKB_CB(skb)->auth_pkt = (eh.ether_type == __constant_htons(ETHERTYPE_PAE));
++
+ switch (vap->iv_opmode) {
+ case IEEE80211_M_IBSS:
+ case IEEE80211_M_AHDEMO:
+@@ -1617,6 +1619,7 @@
+ ie->param_len = frm - &ie->param_oui[0];
+ return frm;
+ }
++
+ #endif
+ /*
+ * Send a probe request frame with the specified ssid
+@@ -1881,6 +1884,7 @@
+ sizeof(u_int16_t)+IEEE80211_CHALLENGE_LEN : 0));
+ if (skb == NULL)
+ senderr(ENOMEM, is_tx_nobuf);
++ SKB_CB(skb)->auth_pkt = 1;
+
+ ((__le16 *)frm)[0] =
+ (is_shared_key) ? htole16(IEEE80211_AUTH_ALG_SHARED)
+@@ -1955,6 +1959,7 @@
+ vap->app_ie[IEEE80211_APPIE_FRAME_ASSOC_REQ].length);
+ if (skb == NULL)
+ senderr(ENOMEM, is_tx_nobuf);
++ SKB_CB(skb)->auth_pkt = 1;
+
+ capinfo = 0;
+ if (vap->iv_opmode == IEEE80211_M_IBSS)