{
struct ieee80211_master_priv *mpriv = netdev_priv(dev);
struct ieee80211_local *local = mpriv->local;
- struct ieee80211_hw *hw = &local->hw;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct sta_info *sta;
u16 queue;
u8 tid;
if (unlikely(queue >= local->hw.queues))
queue = local->hw.queues - 1;
- if (skb->requeue) {
- if (!hw->ampdu_queues)
- return queue;
-
- rcu_read_lock();
- sta = sta_info_get(local, hdr->addr1);
- tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
- if (sta) {
- int ampdu_queue = sta->tid_to_tx_q[tid];
-
- if ((ampdu_queue < ieee80211_num_queues(hw)) &&
- test_bit(ampdu_queue, local->queue_pool))
- queue = ampdu_queue;
- }
- rcu_read_unlock();
-
- return queue;
- }
-
- /* Now we know the 1d priority, fill in the QoS header if
- * there is one.
+ /*
+ * Now we know the 1d priority, fill in the QoS header if
+ * there is one (and we haven't done this before).
*/
- if (ieee80211_is_data_qos(hdr->frame_control)) {
+ if (!skb->requeue && ieee80211_is_data_qos(hdr->frame_control)) {
u8 *p = ieee80211_get_qos_ctl(hdr);
u8 ack_policy = 0;
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
/* qos header is 2 bytes, second reserved */
*p++ = ack_policy | tid;
*p = 0;
-
- if (!hw->ampdu_queues)
- return queue;
-
- rcu_read_lock();
-
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- int ampdu_queue = sta->tid_to_tx_q[tid];
-
- if ((ampdu_queue < ieee80211_num_queues(hw)) &&
- test_bit(ampdu_queue, local->queue_pool))
- queue = ampdu_queue;
- }
-
- rcu_read_unlock();
}
return queue;
}
-
-int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
- struct sta_info *sta, u16 tid)
-{
- int i;
-
- /* XXX: currently broken due to cb/requeue use */
- return -EPERM;
-
- /* prepare the filter and save it for the SW queue
- * matching the received HW queue */
-
- if (!local->hw.ampdu_queues)
- return -EPERM;
-
- /* try to get a Qdisc from the pool */
- for (i = local->hw.queues; i < ieee80211_num_queues(&local->hw); i++)
- if (!test_and_set_bit(i, local->queue_pool)) {
- ieee80211_stop_queue(local_to_hw(local), i);
- sta->tid_to_tx_q[tid] = i;
-
- /* IF there are already pending packets
- * on this tid first we need to drain them
- * on the previous queue
- * since HT is strict in order */
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "allocated aggregation queue"
- " %d tid %d addr %pM pool=0x%lX\n",
- i, tid, sta->sta.addr,
- local->queue_pool[0]);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- return 0;
- }
-
- return -EAGAIN;
-}
-
-/**
- * the caller needs to hold netdev_get_tx_queue(local->mdev, X)->lock
- */
-void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local,
- struct sta_info *sta, u16 tid,
- u8 requeue)
-{
- int agg_queue = sta->tid_to_tx_q[tid];
- struct ieee80211_hw *hw = &local->hw;
-
- /* return the qdisc to the pool */
- clear_bit(agg_queue, local->queue_pool);
- sta->tid_to_tx_q[tid] = ieee80211_num_queues(hw);
-
- if (requeue) {
- ieee80211_requeue(local, agg_queue);
- } else {
- struct netdev_queue *txq;
- spinlock_t *root_lock;
- struct Qdisc *q;
-
- txq = netdev_get_tx_queue(local->mdev, agg_queue);
- q = rcu_dereference(txq->qdisc);
- root_lock = qdisc_lock(q);
-
- spin_lock_bh(root_lock);
- qdisc_reset(q);
- spin_unlock_bh(root_lock);
- }
-}
-
-void ieee80211_requeue(struct ieee80211_local *local, int queue)
-{
- struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, queue);
- struct sk_buff_head list;
- spinlock_t *root_lock;
- struct Qdisc *qdisc;
- u32 len;
-
- rcu_read_lock_bh();
-
- qdisc = rcu_dereference(txq->qdisc);
- if (!qdisc || !qdisc->dequeue)
- goto out_unlock;
-
- skb_queue_head_init(&list);
-
- root_lock = qdisc_root_lock(qdisc);
- spin_lock(root_lock);
- for (len = qdisc->q.qlen; len > 0; len--) {
- struct sk_buff *skb = qdisc->dequeue(qdisc);
-
- if (skb)
- __skb_queue_tail(&list, skb);
- }
- spin_unlock(root_lock);
-
- for (len = list.qlen; len > 0; len--) {
- struct sk_buff *skb = __skb_dequeue(&list);
- u16 new_queue;
-
- BUG_ON(!skb);
- new_queue = ieee80211_select_queue(local->mdev, skb);
- skb_set_queue_mapping(skb, new_queue);
-
- txq = netdev_get_tx_queue(local->mdev, new_queue);
-
-
- qdisc = rcu_dereference(txq->qdisc);
- root_lock = qdisc_root_lock(qdisc);
-
- spin_lock(root_lock);
- qdisc_enqueue_root(skb, qdisc);
- spin_unlock(root_lock);
- }
-
-out_unlock:
- rcu_read_unlock_bh();
-}
projects / karo-tx-linux.git / blobdiff