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mac80211: fix A-MPDU queue assignment 

Internally, mac80211 requires the skb's queue mapping to be set
to the AC queue, not the virtual A-MPDU queue. This is not done
correctly currently, this patch moves the code down to directly
before the driver is invoked and adds a comment that it will be
moved into the driver later.

Since this requires __ieee80211_tx() to have the sta pointer,
make sure to provide it in ieee80211_tx_pending().

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-03-23 17:28:36 +01:00 committed by John W. Linville
parent 2de8e0d999
commit f0e72851f7
1 changed files with 27 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
net/mac80211/tx.c
View File

@ -1024,13 +1024,8 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
spin_lock_irqsave(&tx->sta->lock, flags);
state = &tx->sta->ampdu_mlme.tid_state_tx[tid];
if (*state == HT_AGG_STATE_OPERATIONAL) {
if (*state == HT_AGG_STATE_OPERATIONAL)
info->flags |= IEEE80211_TX_CTL_AMPDU;
if (local->hw.ampdu_queues)
skb_set_queue_mapping(
skb, tx->local->hw.queues +
tx->sta->tid_to_tx_q[tid]);
}
spin_unlock_irqrestore(&tx->sta->lock, flags);
}
@ -1103,10 +1098,29 @@ static int __ieee80211_tx(struct ieee80211_local *local,
skb_get_queue_mapping(skb)))
return IEEE80211_TX_PENDING;
if (fragm) {
info = IEEE80211_SKB_CB(skb);
info = IEEE80211_SKB_CB(skb);
if (fragm)
info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
IEEE80211_TX_CTL_FIRST_FRAGMENT);
/*
* Internally, we need to have the queue mapping point to
* the real AC queue, not the virtual A-MPDU queue. This
* now finally sets the queue to what the driver wants.
* We will later move this down into the only driver that
* needs it, iwlwifi.
*/
if (tx->sta && local->hw.ampdu_queues &&
info->flags & IEEE80211_TX_CTL_AMPDU) {
unsigned long flags;
u8 *qc = ieee80211_get_qos_ctl((void *) skb->data);
int tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
spin_lock_irqsave(&tx->sta->lock, flags);
skb_set_queue_mapping(skb, local->hw.queues +
tx->sta->tid_to_tx_q[tid]);
spin_unlock_irqrestore(&tx->sta->lock, flags);
}
next = skb->next;
@ -1817,9 +1831,11 @@ void ieee80211_tx_pending(unsigned long data)
struct ieee80211_local *local = (struct ieee80211_local *)data;
struct net_device *dev = local->mdev;
struct ieee80211_tx_stored_packet *store;
struct ieee80211_hdr *hdr;
struct ieee80211_tx_data tx;
int i, ret;
rcu_read_lock();
netif_tx_lock_bh(dev);
for (i = 0; i < local->hw.queues; i++) {
/* Check that this queue is ok */
@ -1839,6 +1855,8 @@ void ieee80211_tx_pending(unsigned long data)
store = &local->pending_packet[i];
tx.flags = 0;
tx.skb = store->skb;
hdr = (struct ieee80211_hdr *)tx.skb->data;
tx.sta = sta_info_get(local, hdr->addr1);
ret = __ieee80211_tx(local, &tx);
store->skb = tx.skb;
if (!ret) {
@ -1847,6 +1865,7 @@ void ieee80211_tx_pending(unsigned long data)
}
}
netif_tx_unlock_bh(dev);
rcu_read_unlock();
}
/* functions for drivers to get certain frames */