summaryrefslogtreecommitdiffstats
path: root/net/mac80211/iface.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/iface.c')
-rw-r--r--net/mac80211/iface.c174
1 files changed, 147 insertions, 27 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 1afa9ec81fe..910729fc18c 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -339,7 +339,6 @@ static int ieee80211_stop(struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
unsigned long flags;
struct sk_buff *skb, *tmp;
u32 hw_reconf_flags = 0;
@@ -356,18 +355,6 @@ static int ieee80211_stop(struct net_device *dev)
ieee80211_work_purge(sdata);
/*
- * Now delete all active aggregation sessions.
- */
- rcu_read_lock();
-
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
- if (sta->sdata == sdata)
- ieee80211_sta_tear_down_BA_sessions(sta);
- }
-
- rcu_read_unlock();
-
- /*
* Remove all stations associated with this interface.
*
* This must be done before calling ops->remove_interface()
@@ -473,27 +460,14 @@ static int ieee80211_stop(struct net_device *dev)
* whether the interface is running, which, at this point,
* it no longer is.
*/
- cancel_work_sync(&sdata->u.mgd.work);
cancel_work_sync(&sdata->u.mgd.chswitch_work);
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) {
+ 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:
if (ieee80211_vif_is_mesh(&sdata->vif)) {
@@ -508,6 +482,16 @@ static int ieee80211_stop(struct net_device *dev)
}
/* fall through */
default:
+ flush_work(&sdata->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->skb_queue);
+
if (local->scan_sdata == sdata)
ieee80211_scan_cancel(local);
@@ -717,6 +701,136 @@ static void ieee80211_if_setup(struct net_device *dev)
dev->destructor = free_netdev;
}
+static void ieee80211_iface_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, work);
+ struct ieee80211_local *local = sdata->local;
+ struct sk_buff *skb;
+ struct sta_info *sta;
+ struct ieee80211_ra_tid *ra_tid;
+
+ if (!ieee80211_sdata_running(sdata))
+ return;
+
+ if (local->scanning)
+ return;
+
+ /*
+ * ieee80211_queue_work() should have picked up most cases,
+ * here we'll pick the rest.
+ */
+ if (WARN(local->suspended,
+ "interface work scheduled while going to suspend\n"))
+ return;
+
+ /* first process frames */
+ while ((skb = skb_dequeue(&sdata->skb_queue))) {
+ struct ieee80211_mgmt *mgmt = (void *)skb->data;
+
+ if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) {
+ ra_tid = (void *)&skb->cb;
+ ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra,
+ ra_tid->tid);
+ } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) {
+ ra_tid = (void *)&skb->cb;
+ ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra,
+ ra_tid->tid);
+ } else if (ieee80211_is_action(mgmt->frame_control) &&
+ mgmt->u.action.category == WLAN_CATEGORY_BACK) {
+ int len = skb->len;
+
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, mgmt->sa);
+ if (sta) {
+ switch (mgmt->u.action.u.addba_req.action_code) {
+ case WLAN_ACTION_ADDBA_REQ:
+ ieee80211_process_addba_request(
+ local, sta, mgmt, len);
+ break;
+ case WLAN_ACTION_ADDBA_RESP:
+ ieee80211_process_addba_resp(local, sta,
+ mgmt, len);
+ break;
+ case WLAN_ACTION_DELBA:
+ ieee80211_process_delba(sdata, sta,
+ mgmt, len);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ }
+ mutex_unlock(&local->sta_mtx);
+ } else if (ieee80211_is_data_qos(mgmt->frame_control)) {
+ struct ieee80211_hdr *hdr = (void *)mgmt;
+ /*
+ * So the frame isn't mgmt, but frame_control
+ * is at the right place anyway, of course, so
+ * the if statement is correct.
+ *
+ * Warn if we have other data frame types here,
+ * they must not get here.
+ */
+ WARN_ON(hdr->frame_control &
+ cpu_to_le16(IEEE80211_STYPE_NULLFUNC));
+ WARN_ON(!(hdr->seq_ctrl &
+ cpu_to_le16(IEEE80211_SCTL_FRAG)));
+ /*
+ * This was a fragment of a frame, received while
+ * a block-ack session was active. That cannot be
+ * right, so terminate the session.
+ */
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get(sdata, mgmt->sa);
+ if (sta) {
+ u16 tid = *ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CTL_TID_MASK;
+
+ __ieee80211_stop_rx_ba_session(
+ sta, tid, WLAN_BACK_RECIPIENT,
+ WLAN_REASON_QSTA_REQUIRE_SETUP);
+ }
+ mutex_unlock(&local->sta_mtx);
+ } else switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ ieee80211_sta_rx_queued_mgmt(sdata, skb);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ieee80211_ibss_rx_queued_mgmt(sdata, skb);
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ break;
+ ieee80211_mesh_rx_queued_mgmt(sdata, skb);
+ break;
+ default:
+ WARN(1, "frame for unexpected interface type");
+ break;
+ }
+
+ kfree_skb(skb);
+ }
+
+ /* then other type-dependent work */
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+ ieee80211_sta_work(sdata);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ieee80211_ibss_work(sdata);
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (!ieee80211_vif_is_mesh(&sdata->vif))
+ break;
+ ieee80211_mesh_work(sdata);
+ break;
+ default:
+ break;
+ }
+}
+
+
/*
* Helper function to initialise an interface to a specific type.
*/
@@ -734,6 +848,9 @@ 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);
+ INIT_WORK(&sdata->work, ieee80211_iface_work);
+
switch (type) {
case NL80211_IFTYPE_AP:
skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
@@ -959,6 +1076,9 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
sdata->wdev.wiphy = local->hw.wiphy;
sdata->local = local;
sdata->dev = ndev;
+#ifdef CONFIG_INET
+ sdata->arp_filter_state = true;
+#endif
for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
skb_queue_head_init(&sdata->fragments[i].skb_list);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 19:04:42 +0000