[PATCH] softmac: deauthentication implies deassociation

The 802.11 specs state that deauthenticating also implies
disassociating. This patch implements that, which improve the behaviour
of SIOCSIWMLME.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 37 insertions, 24 deletions

diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c
index d4c79ce16871..01f21334767c 100644
--- a/net/ieee80211/softmac/ieee80211softmac_assoc.c
+++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c
@@ -82,28 +82,37 @@ ieee80211softmac_assoc_timeout(void *d)
         ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_ASSOCIATE_TIMEOUT, NULL);
 }
 
-/* Sends out a disassociation request to the desired AP */
 void
-ieee80211softmac_disassoc(struct ieee80211softmac_device *mac, u16 reason)
+ieee80211softmac_disassoc(struct ieee80211softmac_device *mac)
 {
         unsigned long flags;
+
+        spin_lock_irqsave(&mac->lock, flags);
+        if (mac->associnfo.associating)
+                cancel_delayed_work(&mac->associnfo.timeout);
+
+        netif_carrier_off(mac->dev);
+
+        mac->associated = 0;
+        mac->associnfo.bssvalid = 0;
+        mac->associnfo.associating = 0;
+        ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL);
+        spin_unlock_irqrestore(&mac->lock, flags);
+}
+
+/* Sends out a disassociation request to the desired AP */
+void
+ieee80211softmac_send_disassoc_req(struct ieee80211softmac_device *mac, u16 reason)
+{
         struct ieee80211softmac_network *found;
 
         if (mac->associnfo.bssvalid && mac->associated) {
                 found = ieee80211softmac_get_network_by_bssid(mac, mac->associnfo.bssid);
                 if (found)
                         ieee80211softmac_send_mgt_frame(mac, found, IEEE80211_STYPE_DISASSOC, reason);
-        } else if (mac->associnfo.associating) {
-                cancel_delayed_work(&mac->associnfo.timeout);
         }
 
-        /* Change our state */
-        spin_lock_irqsave(&mac->lock, flags);
-        /* Do NOT clear bssvalid as that will break ieee80211softmac_assoc_work! */
-        mac->associated = 0;
-        mac->associnfo.associating = 0;
-        ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL);
-        spin_unlock_irqrestore(&mac->lock, flags);
+        ieee80211softmac_disassoc(mac);
 }
 
 static inline int
@@ -176,14 +185,18 @@ ieee80211softmac_assoc_work(void *d)
         struct ieee80211softmac_device *mac = (struct ieee80211softmac_device *)d;
         struct ieee80211softmac_network *found = NULL;
         struct ieee80211_network *net = NULL, *best = NULL;
+        int bssvalid;
         unsigned long flags;
-        
+
+        /* ieee80211_disassoc might clear this */
+        bssvalid = mac->associnfo.bssvalid;
+
         /* meh */
         if (mac->associated)
-                ieee80211softmac_disassoc(mac, WLAN_REASON_DISASSOC_STA_HAS_LEFT);
+                ieee80211softmac_send_disassoc_req(mac, WLAN_REASON_DISASSOC_STA_HAS_LEFT);
 
         /* try to find the requested network in our list, if we found one already */
-        if (mac->associnfo.bssvalid || mac->associnfo.bssfixed)
+        if (bssvalid || mac->associnfo.bssfixed)
                 found = ieee80211softmac_get_network_by_bssid(mac, mac->associnfo.bssid);       
         
         /* Search the ieee80211 networks for this network if we didn't find it by bssid,
@@ -380,7 +393,6 @@ ieee80211softmac_handle_disassoc(struct net_device * dev,
                                  struct ieee80211_disassoc *disassoc)
 {
         struct ieee80211softmac_device *mac = ieee80211_priv(dev);
-        unsigned long flags;
 
         if (unlikely(!mac->running))
                 return -ENODEV;
@@ -392,14 +404,11 @@ ieee80211softmac_handle_disassoc(struct net_device * dev,
                 return 0;
 
         dprintk(KERN_INFO PFX "got disassoc frame\n");
-        netif_carrier_off(dev);
-        spin_lock_irqsave(&mac->lock, flags);
-        mac->associnfo.bssvalid = 0;
-        mac->associated = 0;
-        ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL);
+        ieee80211softmac_disassoc(mac);
+
+        /* try to reassociate */
         schedule_work(&mac->associnfo.work);
-        spin_unlock_irqrestore(&mac->lock, flags);
-        
+
         return 0;
 }
 
diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c
index 06e332624665..084b6211f293 100644
--- a/net/ieee80211/softmac/ieee80211softmac_auth.c
+++ b/net/ieee80211/softmac/ieee80211softmac_auth.c
@@ -279,6 +279,9 @@ ieee80211softmac_deauth_from_net(struct ieee80211softmac_device *mac,
         struct list_head *list_ptr;
         unsigned long flags;
 
+        /* deauthentication implies disassociation */
+        ieee80211softmac_disassoc(mac);
+
         /* Lock and reset status flags */
         spin_lock_irqsave(&mac->lock, flags);
         net->authenticating = 0;
diff --git a/net/ieee80211/softmac/ieee80211softmac_priv.h b/net/ieee80211/softmac/ieee80211softmac_priv.h
index 8c95b3abe0cc..5de0abf157e3 100644
--- a/net/ieee80211/softmac/ieee80211softmac_priv.h
+++ b/net/ieee80211/softmac/ieee80211softmac_priv.h
@@ -150,7 +150,8 @@ int ieee80211softmac_handle_disassoc(struct net_device * dev,
 int ieee80211softmac_handle_reassoc_req(struct net_device * dev,
                                         struct ieee80211_reassoc_request * reassoc);
 void ieee80211softmac_assoc_timeout(void *d);
-void ieee80211softmac_disassoc(struct ieee80211softmac_device *mac, u16 reason);
+void ieee80211softmac_send_disassoc_req(struct ieee80211softmac_device *mac, u16 reason);
+void ieee80211softmac_disassoc(struct ieee80211softmac_device *mac);
 
 /* some helper functions */
 static inline int ieee80211softmac_scan_handlers_check_self(struct ieee80211softmac_device *sm)
diff --git a/net/ieee80211/softmac/ieee80211softmac_wx.c b/net/ieee80211/softmac/ieee80211softmac_wx.c
index 8d0c22641ca8..b7d83cd4d56c 100644
--- a/net/ieee80211/softmac/ieee80211softmac_wx.c
+++ b/net/ieee80211/softmac/ieee80211softmac_wx.c
@@ -456,7 +456,7 @@ ieee80211softmac_wx_set_mlme(struct net_device *dev,
                 }
                 return ieee80211softmac_deauth_req(mac, net, reason);
         case IW_MLME_DISASSOC:
-                ieee80211softmac_disassoc(mac, reason);
+                ieee80211softmac_send_disassoc_req(mac, reason);
                 return 0;
         default:
                 return -EOPNOTSUPP;