From bf3c08766faa2399e429cf45855147e4eb25d162 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sat, 12 Jul 2008 22:23:36 +0000
Subject: [PATCH] madwifi: make STA mode interfaces disassociate if
 transmission of assoc/auth critical packets failed.

SVN-Revision: 11792
---
 .../patches/355-eap_auth_disassoc.patch       | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 package/madwifi/patches/355-eap_auth_disassoc.patch

diff --git a/package/madwifi/patches/355-eap_auth_disassoc.patch b/package/madwifi/patches/355-eap_auth_disassoc.patch
new file mode 100644
index 0000000000..e85d93a788
--- /dev/null
+++ b/package/madwifi/patches/355-eap_auth_disassoc.patch
@@ -0,0 +1,81 @@
+This patch causes STA mode interfaces to disassociate if transmission of assoc/auth
+critical packets failed.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -8315,6 +8315,18 @@
+ #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,
+--- a/net80211/ieee80211_linux.c
++++ b/net80211/ieee80211_linux.c
+@@ -156,6 +156,7 @@
+ 		if (off != 0)
+ 			skb_reserve(skb, align - off);
+ 
++		SKB_CB(skb)->auth_pkt = 0;
+ 		SKB_CB(skb)->ni = NULL;
+ 		SKB_CB(skb)->flags = 0;
+ 		SKB_CB(skb)->next = NULL;
+--- a/net80211/ieee80211_linux.h
++++ b/net80211/ieee80211_linux.h
+@@ -393,6 +393,7 @@
+ 	void		(*next_destructor)(struct sk_buff *skb);
+ #endif
+ 	struct sk_buff *next;			/* fast frame sk_buf chain */
++	u_int8_t auth_pkt;
+ };
+ 
+ 
+--- a/net80211/ieee80211_output.c
++++ b/net80211/ieee80211_output.c
+@@ -778,6 +778,8 @@
+ 	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:
+@@ -1622,6 +1624,7 @@
+ 	ie->param_len = frm - &ie->param_oui[0];
+ 	return frm;
+ }
++
+ #endif
+ /*
+  * Send a probe request frame with the specified ssid
+@@ -1886,6 +1889,7 @@
+ 				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)
+@@ -1960,6 +1964,7 @@
+ 			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)
-- 
2.30.2