mac80211: use common skb queue

IBSS, managed and mesh modes all have an
skb queue, and in the future we want to
also use it in other modes, so make them
all use a common skb queue already.

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

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index d7a96ced2c83ef255cef5ca22a9a99025a7e66a7..a9ff904620db5da19823f65ef6fca4248691e039 100644 (file)
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -779,7 +779,7 @@ static void ieee80211_ibss_work(struct work_struct *work)
                return;
        ifibss = &sdata->u.ibss;
 
-       while ((skb = skb_dequeue(&ifibss->skb_queue)))
+       while ((skb = skb_dequeue(&sdata->skb_queue)))
                ieee80211_ibss_rx_queued_mgmt(sdata, skb);
 
        if (!test_and_clear_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request))
@@ -850,7 +850,6 @@ void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata)
        INIT_WORK(&ifibss->work, ieee80211_ibss_work);
        setup_timer(&ifibss->timer, ieee80211_ibss_timer,
                    (unsigned long) sdata);
-       skb_queue_head_init(&ifibss->skb_queue);
 }
 
 /* scan finished notification */
@@ -890,7 +889,7 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
        case IEEE80211_STYPE_BEACON:
        case IEEE80211_STYPE_PROBE_REQ:
        case IEEE80211_STYPE_AUTH:
-               skb_queue_tail(&sdata->u.ibss.skb_queue, skb);
+               skb_queue_tail(&sdata->skb_queue, skb);
                ieee80211_queue_work(&local->hw, &sdata->u.ibss.work);
                return RX_QUEUED;
        }
@@ -983,7 +982,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
        synchronize_rcu();
        kfree_skb(skb);
 
-       skb_queue_purge(&sdata->u.ibss.skb_queue);
+       skb_queue_purge(&sdata->skb_queue);
        memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
        sdata->u.ibss.ssid_len = 0;
 

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 5782a537f74a86d26465131a65204465744e0d15..3cc3867c5418c5bb22857fbedc998fc641493a29 100644 (file)
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -340,8 +340,6 @@ struct ieee80211_if_managed {
 
        u16 aid;
 
-       struct sk_buff_head skb_queue;
-
        unsigned long timers_running; /* used for quiesce/restart */
        bool powersave; /* powersave requested for this iface */
        enum ieee80211_smps_mode req_smps, /* requested smps mode */
@@ -388,8 +386,6 @@ struct ieee80211_if_ibss {
        struct timer_list timer;
        struct work_struct work;
 
-       struct sk_buff_head skb_queue;
-
        unsigned long request;
        unsigned long last_scan_completed;
 
@@ -420,7 +416,6 @@ struct ieee80211_if_mesh {
        struct timer_list housekeeping_timer;
        struct timer_list mesh_path_timer;
        struct timer_list mesh_path_root_timer;
-       struct sk_buff_head skb_queue;
 
        unsigned long timers_running;
 
@@ -517,6 +512,8 @@ struct ieee80211_sub_if_data {
 
        u16 sequence_number;
 
+       struct sk_buff_head skb_queue;
+
        /*
         * AP this belongs to: self in AP mode and
         * corresponding AP in VLAN mode, NULL for

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 906fc2be0cfb45bd43f1f5a71f0df53941c828ab..56167a3d872dd2127f20ec13d8711b493d09c546 100644 (file)
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -465,21 +465,11 @@ static int ieee80211_stop(struct net_device *dev)
                cancel_work_sync(&sdata->u.mgd.monitor_work);
                cancel_work_sync(&sdata->u.mgd.beacon_connection_loss_work);
 
-               /*
-                * When we get here, the interface is marked down.
-                * Call synchronize_rcu() to wait for the RX path
-                * should it be using the interface and enqueuing
-                * frames at this very time on another CPU.
-                */
-               synchronize_rcu();
-               skb_queue_purge(&sdata->u.mgd.skb_queue);
                /* fall through */
        case NL80211_IFTYPE_ADHOC:
                if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
                        del_timer_sync(&sdata->u.ibss.timer);
                        cancel_work_sync(&sdata->u.ibss.work);
-                       synchronize_rcu();
-                       skb_queue_purge(&sdata->u.ibss.skb_queue);
                }
                /* fall through */
        case NL80211_IFTYPE_MESH_POINT:
@@ -495,6 +485,15 @@ static int ieee80211_stop(struct net_device *dev)
                }
                /* fall through */
        default:
+               /*
+                * When we get here, the interface is marked down.
+                * Call synchronize_rcu() to wait for the RX path
+                * should it be using the interface and enqueuing
+                * frames at this very time on another CPU.
+                */
+               synchronize_rcu();
+               skb_queue_purge(&sdata->skb_queue);
+
                if (local->scan_sdata == sdata)
                        ieee80211_scan_cancel(local);
 
@@ -721,6 +720,8 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
        /* only monitor differs */
        sdata->dev->type = ARPHRD_ETHER;
 
+       skb_queue_head_init(&sdata->skb_queue);
+
        switch (type) {
        case NL80211_IFTYPE_AP:
                skb_queue_head_init(&sdata->u.ap.ps_bc_buf);

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index bde81031727a6a78cadfa070f95ead4f45b3538b..065533a37abe3957493ff829f8dd066861b066d5 100644 (file)
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -537,15 +537,6 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
         * it no longer is.
         */
        cancel_work_sync(&sdata->u.mesh.work);
-
-       /*
-        * When we get here, the interface is marked down.
-        * Call synchronize_rcu() to wait for the RX path
-        * should it be using the interface and enqueuing
-        * frames at this very time on another CPU.
-        */
-       rcu_barrier(); /* Wait for RX path and call_rcu()'s */
-       skb_queue_purge(&sdata->u.mesh.skb_queue);
 }
 
 static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
@@ -650,7 +641,7 @@ static void ieee80211_mesh_work(struct work_struct *work)
        if (local->scanning)
                return;
 
-       while ((skb = skb_dequeue(&ifmsh->skb_queue)))
+       while ((skb = skb_dequeue(&sdata->skb_queue)))
                ieee80211_mesh_rx_queued_mgmt(sdata, skb);
 
        if (ifmsh->preq_queue_len &&
@@ -690,7 +681,6 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
        setup_timer(&ifmsh->housekeeping_timer,
                    ieee80211_mesh_housekeeping_timer,
                    (unsigned long) sdata);
-       skb_queue_head_init(&sdata->u.mesh.skb_queue);
 
        ifmsh->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
        ifmsh->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
@@ -750,7 +740,7 @@ ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
        case IEEE80211_STYPE_ACTION:
        case IEEE80211_STYPE_PROBE_RESP:
        case IEEE80211_STYPE_BEACON:
-               skb_queue_tail(&ifmsh->skb_queue, skb);
+               skb_queue_tail(&sdata->skb_queue, skb);
                ieee80211_queue_work(&local->hw, &ifmsh->work);
                return RX_QUEUED;
        }

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 0154d74905c94e315998165c025d6d193fef7ce9..854ef4ed2cfacb338033073a84c3d366cdad81d0 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1652,7 +1652,7 @@ ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
        case IEEE80211_STYPE_DEAUTH:
        case IEEE80211_STYPE_DISASSOC:
        case IEEE80211_STYPE_ACTION:
-               skb_queue_tail(&sdata->u.mgd.skb_queue, skb);
+               skb_queue_tail(&sdata->skb_queue, skb);
                ieee80211_queue_work(&local->hw, &sdata->u.mgd.work);
                return RX_QUEUED;
        }
@@ -1810,7 +1810,7 @@ static void ieee80211_sta_work(struct work_struct *work)
        ifmgd = &sdata->u.mgd;
 
        /* first process frames to avoid timing out while a frame is pending */
-       while ((skb = skb_dequeue(&ifmgd->skb_queue)))
+       while ((skb = skb_dequeue(&sdata->skb_queue)))
                ieee80211_sta_rx_queued_mgmt(sdata, skb);
 
        /* then process the rest of the work */
@@ -1967,7 +1967,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
                    (unsigned long) sdata);
        setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
                    (unsigned long) sdata);
-       skb_queue_head_init(&ifmgd->skb_queue);
 
        ifmgd->flags = 0;