Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

[pandora-kernel.git] / net / mac80211 / agg-tx.c

diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 331472c..2c2e951 100644 (file)
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -15,6 +15,7 @@
 
 #include <linux/ieee80211.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -77,7 +78,8 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
        memcpy(mgmt->da, da, ETH_ALEN);
        memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
        if (sdata->vif.type == NL80211_IFTYPE_AP ||
-           sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+           sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+           sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
                memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
        else if (sdata->vif.type == NL80211_IFTYPE_STATION)
                memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
@@ -184,6 +186,7 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
 #endif /* CONFIG_MAC80211_HT_DEBUG */
 
        del_timer_sync(&tid_tx->addba_resp_timer);
+       del_timer_sync(&tid_tx->session_timer);
 
        /*
         * After this packets are no longer handed right through
@@ -367,6 +370,28 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid)
                                     tid_tx->timeout);
 }
 
+/*
+ * After accepting the AddBA Response we activated a timer,
+ * resetting it after each frame that we send.
+ */
+static void sta_tx_agg_session_timer_expired(unsigned long data)
+{
+       /* not an elegant detour, but there is no choice as the timer passes
+        * only one argument, and various sta_info are needed here, so init
+        * flow in sta_info_create gives the TID as data, while the timer_to_id
+        * array gives the sta through container_of */
+       u8 *ptid = (u8 *)data;
+       u8 *timer_to_id = ptid - *ptid;
+       struct sta_info *sta = container_of(timer_to_id, struct sta_info,
+                                        timer_to_tid[0]);
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+       printk(KERN_DEBUG "tx session timer expired on tid %d\n", (u16)*ptid);
+#endif
+
+       ieee80211_stop_tx_ba_session(&sta->sta, *ptid);
+}
+
 int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
                                  u16 timeout)
 {
@@ -391,13 +416,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
               pubsta->addr, tid);
 #endif /* CONFIG_MAC80211_HT_DEBUG */
 
-       /*
-        * The aggregation code is not prepared to handle
-        * anything but STA/AP due to the BSSID handling.
-        * IBSS could work in the code but isn't supported
-        * by drivers or the standard.
-        */
        if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+           sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
            sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
            sdata->vif.type != NL80211_IFTYPE_AP)
                return -EINVAL;
@@ -441,11 +461,16 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
 
        tid_tx->timeout = timeout;
 
-       /* Tx timer */
+       /* response timer */
        tid_tx->addba_resp_timer.function = sta_addba_resp_timer_expired;
        tid_tx->addba_resp_timer.data = (unsigned long)&sta->timer_to_tid[tid];
        init_timer(&tid_tx->addba_resp_timer);
 
+       /* tx timer */
+       tid_tx->session_timer.function = sta_tx_agg_session_timer_expired;
+       tid_tx->session_timer.data = (unsigned long)&sta->timer_to_tid[tid];
+       init_timer(&tid_tx->session_timer);
+
        /* assign a dialog token */
        sta->ampdu_mlme.dialog_token_allocator++;
        tid_tx->dialog_token = sta->ampdu_mlme.dialog_token_allocator;
@@ -550,7 +575,7 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid)
        }
 
        mutex_lock(&local->sta_mtx);
-       sta = sta_info_get(sdata, ra);
+       sta = sta_info_get_bss(sdata, ra);
        if (!sta) {
                mutex_unlock(&local->sta_mtx);
 #ifdef CONFIG_MAC80211_HT_DEBUG
@@ -679,7 +704,7 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid)
 
        mutex_lock(&local->sta_mtx);
 
-       sta = sta_info_get(sdata, ra);
+       sta = sta_info_get_bss(sdata, ra);
        if (!sta) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
                printk(KERN_DEBUG "Could not find station: %pM\n", ra);
@@ -817,6 +842,11 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
                        ieee80211_agg_tx_operational(local, sta, tid);
 
                sta->ampdu_mlme.addba_req_num[tid] = 0;
+
+               if (tid_tx->timeout)
+                       mod_timer(&tid_tx->session_timer,
+                                 TU_TO_EXP_TIME(tid_tx->timeout));
+
        } else {
                ___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR,
                                                true);