From b6f0b639089fb160b10984ac56e07e7043dabad7 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Thu, 6 Aug 2009 20:41:34 +0200
Subject: [PATCH] cfg80211: fix SME association after disassociation
When an AP disassociates us, we currently go into a weird
state because the SME doesn't handle authenticated but not
associated well unless it's within its own state machine,
it can't recover from that. However, it shouldn't need to,
since we don't do any decisions in it really -- so when we
get disconnected, simply deauthenticate too.
Reported-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
net/wireless/sme.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 8a7dcbf906023..0b776b769c0f6 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -570,10 +570,30 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
wdev->ssid_len = 0;
if (wdev->conn) {
+ const u8 *bssid;
+ int ret;
+
kfree(wdev->conn->ie);
wdev->conn->ie = NULL;
kfree(wdev->conn);
wdev->conn = NULL;
+
+ /*
+ * If this disconnect was due to a disassoc, we
+ * we might still have an auth BSS around. For
+ * the userspace SME that's currently expected,
+ * but for the kernel SME (nl80211 CONNECT or
+ * wireless extensions) we want to clear up all
+ * state.
+ */
+ for (i = 0; i < MAX_AUTH_BSSES; i++) {
+ if (!wdev->auth_bsses[i])
+ continue;
+ bssid = wdev->auth_bsses[i]->pub.bssid;
+ ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
+ WLAN_REASON_DEAUTH_LEAVING);
+ WARN(ret, "deauth failed: %d\n", ret);
+ }
}
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
--
2.30.2