*/
const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };
-static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0};
-
-/* Given a data frame determine the 802.1p/1d tag to use. */
-static unsigned int classify_1d(struct sk_buff *skb)
-{
- unsigned int dscp;
-
- /* skb->priority values from 256->263 are magic values to
- * directly indicate a specific 802.1d priority. This is used
- * to allow 802.1d priority to be passed directly in from VLAN
- * tags, etc.
- */
- if (skb->priority >= 256 && skb->priority <= 263)
- return skb->priority - 256;
-
- switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- dscp = ip_hdr(skb)->tos & 0xfc;
- break;
-
- default:
- return 0;
- }
-
- if (dscp & 0x1c)
- return 0;
- return dscp >> 5;
-}
-
-
static int wme_downgrade_ac(struct sk_buff *skb)
{
switch (skb->priority) {
/* Indicate which queue to use. */
-static u16 classify80211(struct sk_buff *skb, struct net_device *dev)
+static u16 classify80211(struct ieee80211_local *local, struct sk_buff *skb)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (!ieee80211_is_data(hdr->frame_control)) {
/* use the data classifier to determine what 802.1d tag the
* data frame has */
- skb->priority = classify_1d(skb);
+ skb->priority = cfg80211_classify8021d(skb);
/* in case we are a client verify acm is not set for this ac */
while (unlikely(local->wmm_acm & BIT(skb->priority))) {
if (wme_downgrade_ac(skb)) {
- /* The old code would drop the packet in this
- * case.
+ /*
+ * This should not really happen. The AP has marked all
+ * lower ACs to require admission control which is not
+ * a reasonable configuration. Allow the frame to be
+ * transmitted using AC_BK as a workaround.
*/
- return 0;
+ break;
}
}
return ieee802_1d_to_ac[skb->priority];
}
-u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb)
+void ieee80211_select_queue(struct ieee80211_local *local, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct sta_info *sta;
u16 queue;
u8 tid;
- queue = classify80211(skb, dev);
+ queue = classify80211(local, skb);
if (unlikely(queue >= local->hw.queues))
queue = local->hw.queues - 1;
- if (info->flags & IEEE80211_TX_CTL_REQUEUE) {
- rcu_read_lock();
- sta = sta_info_get(local, hdr->addr1);
- tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
- if (sta) {
- struct ieee80211_hw *hw = &local->hw;
- 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;
- info->flags |= IEEE80211_TX_CTL_AMPDU;
- } else {
- info->flags &= ~IEEE80211_TX_CTL_AMPDU;
- }
- }
- 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)) {
u8 *p = ieee80211_get_qos_ctl(hdr);
u8 ack_policy = 0;
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
- if (local->wifi_wme_noack_test)
+ if (unlikely(local->wifi_wme_noack_test))
ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK <<
QOS_CONTROL_ACK_POLICY_SHIFT;
/* qos header is 2 bytes, second reserved */
*p++ = ack_policy | tid;
*p = 0;
-
- rcu_read_lock();
-
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- int ampdu_queue = sta->tid_to_tx_q[tid];
- struct ieee80211_hw *hw = &local->hw;
-
- if ((ampdu_queue < ieee80211_num_queues(hw)) &&
- test_bit(ampdu_queue, local->queue_pool)) {
- queue = ampdu_queue;
- info->flags |= IEEE80211_TX_CTL_AMPDU;
- } else {
- info->flags &= ~IEEE80211_TX_CTL_AMPDU;
- }
- }
-
- rcu_read_unlock();
- }
-
- return queue;
-}
-
-int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
- struct sta_info *sta, u16 tid)
-{
- int i;
-
- /* 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()) {
- DECLARE_MAC_BUF(mac);
- printk(KERN_DEBUG "allocated aggregation queue"
- " %d tid %d addr %s pool=0x%lX\n",
- i, tid, print_mac(mac, 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;
-
- txq = netdev_get_tx_queue(local->mdev, agg_queue);
- root_lock = qdisc_root_lock(txq->qdisc);
-
- spin_lock_bh(root_lock);
- qdisc_reset(txq->qdisc);
- 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(skb, qdisc);
- spin_unlock(root_lock);
}
-out_unlock:
- rcu_read_unlock_bh();
+ skb_set_queue_mapping(skb, queue);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff