mac80211: consolidate deauth/disassoc

deauth and disassoc frames are completely identical so there's
little point in having two functions to send them rather than
one that gets a parameter. This same a bit of code size.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 36 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e917e1b72631..62357a208851 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -416,17 +416,18 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
 }
 
 
-static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata,
-                                  struct ieee80211_if_sta *ifsta, u16 reason)
+static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+                                           u16 stype, u16 reason)
 {
         struct ieee80211_local *local = sdata->local;
+        struct ieee80211_if_sta *ifsta = &sdata->u.sta;
         struct sk_buff *skb;
         struct ieee80211_mgmt *mgmt;
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
         if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
-                       "frame\n", sdata->dev->name);
+                printk(KERN_DEBUG "%s: failed to allocate buffer for "
+                       "deauth/disassoc frame\n", sdata->dev->name);
                 return;
         }
         skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -436,42 +437,14 @@ static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata,
         memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
         memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
         memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-                                          IEEE80211_STYPE_DEAUTH);
+        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
         skb_put(skb, 2);
+        /* u.deauth.reason_code == u.disassoc.reason_code */
         mgmt->u.deauth.reason_code = cpu_to_le16(reason);
 
         ieee80211_sta_tx(sdata, skb, 0);
 }
 
-static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata,
-                                    struct ieee80211_if_sta *ifsta, u16 reason)
-{
-        struct ieee80211_local *local = sdata->local;
-        struct sk_buff *skb;
-        struct ieee80211_mgmt *mgmt;
-
-        skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
-                       "frame\n", sdata->dev->name);
-                return;
-        }
-        skb_reserve(skb, local->hw.extra_tx_headroom);
-
-        mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
-        memset(mgmt, 0, 24);
-        memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
-        memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
-        memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
-                                          IEEE80211_STYPE_DISASSOC);
-        skb_put(skb, 2);
-        mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
-
-        ieee80211_sta_tx(sdata, skb, 0);
-}
-
 static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
                                         u8 dialog_token, u16 status, u16 policy,
                                         u16 buf_size, u16 timeout)
@@ -919,9 +892,11 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
 
         if (self_disconnected) {
                 if (deauth)
-                        ieee80211_send_deauth(sdata, ifsta, reason);
+                        ieee80211_send_deauth_disassoc(sdata,
+                                IEEE80211_STYPE_DEAUTH, reason);
                 else
-                        ieee80211_send_disassoc(sdata, ifsta, reason);
+                        ieee80211_send_deauth_disassoc(sdata,
+                                IEEE80211_STYPE_DISASSOC, reason);
         }
 
         ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;