diff options
author | Sujith <Sujith.Manoharan@atheros.com> | 2008-10-24 04:25:27 (GMT) |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2008-10-31 23:02:14 (GMT) |
commit | 8b30b1fe368ab03049435884c11c5c50e4c4ef0b (patch) | |
tree | 02b27b36cf90267d59584b493ad652e3a4cc6a7e /net/mac80211 | |
parent | 4393dce9402c58744433c7a4f3931e17ddde4fb4 (diff) | |
download | linux-fsl-qoriq-8b30b1fe368ab03049435884c11c5c50e4c4ef0b.tar.xz |
mac80211: Re-enable aggregation
Wireless HW without any dedicated queues for aggregation
do not need the ampdu_queues mechanism present right now
in mac80211. Since mac80211 is still incomplete wrt TX MQ
changes, do not allow aggregation sessions for drivers that
set ampdu_queues.
This is only an interim hack until Intel fixes the requeue issue.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: Luis Rodriguez <Luis.Rodriguez@Atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r-- | net/mac80211/ht.c | 60 | ||||
-rw-r--r-- | net/mac80211/main.c | 7 | ||||
-rw-r--r-- | net/mac80211/rx.c | 7 | ||||
-rw-r--r-- | net/mac80211/tx.c | 19 | ||||
-rw-r--r-- | net/mac80211/wme.c | 24 |
5 files changed, 63 insertions, 54 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 42c3e59..08009d4 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -458,7 +458,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) u8 *state; int ret; - if (tid >= STA_TID_NUM) + if ((tid >= STA_TID_NUM) || !(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION)) return -EINVAL; #ifdef CONFIG_MAC80211_HT_DEBUG @@ -515,17 +515,19 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) (unsigned long)&sta->timer_to_tid[tid]; init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); - /* create a new queue for this aggregation */ - ret = ieee80211_ht_agg_queue_add(local, sta, tid); + if (hw->ampdu_queues) { + /* create a new queue for this aggregation */ + ret = ieee80211_ht_agg_queue_add(local, sta, tid); - /* case no queue is available to aggregation - * don't switch to aggregation */ - if (ret) { + /* case no queue is available to aggregation + * don't switch to aggregation */ + if (ret) { #ifdef CONFIG_MAC80211_HT_DEBUG - printk(KERN_DEBUG "BA request denied - queue unavailable for" - " tid %d\n", tid); + printk(KERN_DEBUG "BA request denied - " + "queue unavailable for tid %d\n", tid); #endif /* CONFIG_MAC80211_HT_DEBUG */ - goto err_unlock_queue; + goto err_unlock_queue; + } } sdata = sta->sdata; @@ -544,7 +546,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) /* No need to requeue the packets in the agg queue, since we * held the tx lock: no packet could be enqueued to the newly * allocated queue */ - ieee80211_ht_agg_queue_remove(local, sta, tid, 0); + if (hw->ampdu_queues) + ieee80211_ht_agg_queue_remove(local, sta, tid, 0); #ifdef CONFIG_MAC80211_HT_DEBUG printk(KERN_DEBUG "BA request denied - HW unavailable for" " tid %d\n", tid); @@ -554,7 +557,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) } /* Will put all the packets in the new SW queue */ - ieee80211_requeue(local, ieee802_1d_to_ac[tid]); + if (hw->ampdu_queues) + ieee80211_requeue(local, ieee802_1d_to_ac[tid]); spin_unlock_bh(&sta->lock); /* send an addBA request */ @@ -622,7 +626,8 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, ra, tid); #endif /* CONFIG_MAC80211_HT_DEBUG */ - ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); + if (hw->ampdu_queues) + ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); *state = HT_AGG_STATE_REQ_STOP_BA_MSK | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); @@ -635,7 +640,8 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, if (ret) { WARN_ON(ret != -EBUSY); *state = HT_AGG_STATE_OPERATIONAL; - ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + if (hw->ampdu_queues) + ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); goto stop_BA_exit; } @@ -691,7 +697,8 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) #ifdef CONFIG_MAC80211_HT_DEBUG printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); #endif - ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + if (hw->ampdu_queues) + ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); } spin_unlock_bh(&sta->lock); rcu_read_unlock(); @@ -745,16 +752,18 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) ieee80211_send_delba(sta->sdata, ra, tid, WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); - agg_queue = sta->tid_to_tx_q[tid]; - - ieee80211_ht_agg_queue_remove(local, sta, tid, 1); - - /* We just requeued the all the frames that were in the - * removed queue, and since we might miss a softirq we do - * netif_schedule_queue. ieee80211_wake_queue is not used - * here as this queue is not necessarily stopped - */ - netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue)); + if (hw->ampdu_queues) { + agg_queue = sta->tid_to_tx_q[tid]; + ieee80211_ht_agg_queue_remove(local, sta, tid, 1); + + /* We just requeued the all the frames that were in the + * removed queue, and since we might miss a softirq we do + * netif_schedule_queue. ieee80211_wake_queue is not used + * here as this queue is not necessarily stopped + */ + netif_schedule_queue(netdev_get_tx_queue(local->mdev, + agg_queue)); + } spin_lock_bh(&sta->lock); *state = HT_AGG_STATE_IDLE; sta->ampdu_mlme.addba_req_num[tid] = 0; @@ -1011,7 +1020,8 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local, *state |= HT_ADDBA_RECEIVED_MSK; sta->ampdu_mlme.addba_req_num[tid] = 0; - if (*state == HT_AGG_STATE_OPERATIONAL) + if (*state == HT_AGG_STATE_OPERATIONAL && + local->hw.ampdu_queues) ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); spin_unlock_bh(&sta->lock); diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 88c1975..fa0cc7a 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -386,8 +386,6 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, struct sta_info *sta, struct sk_buff *skb) { - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - sta->tx_filtered_count++; /* @@ -434,10 +432,9 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, return; } - if (!test_sta_flags(sta, WLAN_STA_PS) && - !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { + if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) { /* Software retry the packet once */ - info->flags |= IEEE80211_TX_CTL_REQUEUE; + skb->requeue = 1; ieee80211_remove_tx_extra(local, sta->key, skb); dev_queue_xmit(skb); return; diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index c4c95f1..648a1d0 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -669,7 +669,6 @@ static int ap_sta_ps_end(struct sta_info *sta) struct ieee80211_local *local = sdata->local; struct sk_buff *skb; int sent = 0; - struct ieee80211_tx_info *info; atomic_dec(&sdata->bss->num_sta_ps); @@ -685,13 +684,11 @@ static int ap_sta_ps_end(struct sta_info *sta) /* Send all buffered frames to the station */ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) { - info = IEEE80211_SKB_CB(skb); sent++; - info->flags |= IEEE80211_TX_CTL_REQUEUE; + skb->requeue = 1; dev_queue_xmit(skb); } while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) { - info = IEEE80211_SKB_CB(skb); local->total_ps_buffered--; sent++; #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG @@ -699,7 +696,7 @@ static int ap_sta_ps_end(struct sta_info *sta) "since STA not sleeping anymore\n", sdata->dev->name, sta->sta.addr, sta->sta.aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - info->flags |= IEEE80211_TX_CTL_REQUEUE; + skb->requeue = 1; dev_queue_xmit(skb); } diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 541e3e6..d6392af 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -661,6 +661,7 @@ ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx) static ieee80211_tx_result debug_noinline ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx) { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data; size_t hdrlen, per_fragm, num_fragm, payload_len, left; struct sk_buff **frags, *first, *frag; @@ -677,9 +678,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx) * This scenario is handled in __ieee80211_tx_prepare but extra * caution taken here as fragmented ampdu may cause Tx stop. */ - if (WARN_ON(tx->flags & IEEE80211_TX_CTL_AMPDU || - skb_get_queue_mapping(tx->skb) >= - ieee80211_num_regular_queues(&tx->local->hw))) + if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU)) return TX_DROP; first = tx->skb; @@ -951,7 +950,8 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx, struct ieee80211_sub_if_data *sdata; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - int hdrlen; + int hdrlen, tid; + u8 *qc, *state; memset(tx, 0, sizeof(*tx)); tx->skb = skb; @@ -982,6 +982,15 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx, tx->sta = sta_info_get(local, hdr->addr1); + if (tx->sta && ieee80211_is_data_qos(hdr->frame_control)) { + qc = ieee80211_get_qos_ctl(hdr); + tid = *qc & IEEE80211_QOS_CTL_TID_MASK; + + state = &tx->sta->ampdu_mlme.tid_state_tx[tid]; + if (*state == HT_AGG_STATE_OPERATIONAL) + info->flags |= IEEE80211_TX_CTL_AMPDU; + } + if (is_multicast_ether_addr(hdr->addr1)) { tx->flags &= ~IEEE80211_TX_UNICAST; info->flags |= IEEE80211_TX_CTL_NO_ACK; @@ -1172,7 +1181,7 @@ retry: * queues, there's no reason for a driver to reject * a frame there, warn and drop it. */ - if (WARN_ON(queue >= ieee80211_num_regular_queues(&local->hw))) + if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU)) goto drop; store = &local->pending_packet[queue]; diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index d27ef7f..ac71b38 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -114,8 +114,8 @@ u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) { 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 ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct sta_info *sta; u16 queue; u8 tid; @@ -124,21 +124,19 @@ u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) if (unlikely(queue >= local->hw.queues)) queue = local->hw.queues - 1; - if (info->flags & IEEE80211_TX_CTL_REQUEUE) { + 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) { - 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)) { + 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(); @@ -159,20 +157,18 @@ u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) *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]; - struct ieee80211_hw *hw = &local->hw; if ((ampdu_queue < ieee80211_num_queues(hw)) && - test_bit(ampdu_queue, local->queue_pool)) { + 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(); |