diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/agg-tx.c | 186 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 20 | ||||
| -rw-r--r-- | net/mac80211/main.c | 9 | ||||
| -rw-r--r-- | net/mac80211/sta_info.c | 15 | ||||
| -rw-r--r-- | net/mac80211/sta_info.h | 4 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 18 | ||||
| -rw-r--r-- | net/mac80211/util.c | 75 | ||||
| -rw-r--r-- | net/mac80211/wme.c | 161 | ||||
| -rw-r--r-- | net/mac80211/wme.h | 6 |
9 files changed, 241 insertions, 253 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index 1232d9f..0217b68 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -132,9 +132,24 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, state = &sta->ampdu_mlme.tid_state_tx[tid]; - if (local->hw.ampdu_queues) - ieee80211_stop_queue(&local->hw, sta->tid_to_tx_q[tid]); + if (local->hw.ampdu_queues) { + if (initiator) { + /* + * Stop the AC queue to avoid issues where we send + * unaggregated frames already before the delba. + */ + ieee80211_stop_queue_by_reason(&local->hw, + local->hw.queues + sta->tid_to_tx_q[tid], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + } + /* + * Pretend the driver woke the queue, just in case + * it disabled it before the session was stopped. + */ + ieee80211_wake_queue( + &local->hw, local->hw.queues + sta->tid_to_tx_q[tid]); + } *state = HT_AGG_STATE_REQ_STOP_BA_MSK | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); @@ -144,8 +159,6 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, /* HW shall not deny going back to legacy */ if (WARN_ON(ret)) { *state = HT_AGG_STATE_OPERATIONAL; - if (local->hw.ampdu_queues) - ieee80211_wake_queue(&local->hw, sta->tid_to_tx_q[tid]); } return ret; @@ -189,14 +202,19 @@ static void sta_addba_resp_timer_expired(unsigned long data) spin_unlock_bh(&sta->lock); } +static inline int ieee80211_ac_from_tid(int tid) +{ + return ieee802_1d_to_ac[tid & 7]; +} + int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) { struct ieee80211_local *local = hw_to_local(hw); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; - u16 start_seq_num; u8 *state; - int ret = 0; + int i, qn = -1, ret = 0; + u16 start_seq_num; if (WARN_ON(!local->ops->ampdu_action)) return -EINVAL; @@ -209,6 +227,13 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) ra, tid); #endif /* CONFIG_MAC80211_HT_DEBUG */ + if (hw->ampdu_queues && ieee80211_ac_from_tid(tid) == 0) { +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "rejecting on voice AC\n"); +#endif + return -EINVAL; + } + rcu_read_lock(); sta = sta_info_get(local, ra); @@ -217,7 +242,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) printk(KERN_DEBUG "Could not find the station\n"); #endif ret = -ENOENT; - goto exit; + goto unlock; } /* @@ -230,11 +255,13 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sta->sdata->vif.type != NL80211_IFTYPE_AP) { ret = -EINVAL; - goto exit; + goto unlock; } spin_lock_bh(&sta->lock); + sdata = sta->sdata; + /* we have tried too many times, receiver does not want A-MPDU */ if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { ret = -EBUSY; @@ -252,6 +279,42 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) goto err_unlock_sta; } + if (hw->ampdu_queues) { + spin_lock(&local->queue_stop_reason_lock); + /* reserve a new queue for this session */ + for (i = 0; i < local->hw.ampdu_queues; i++) { + if (local->ampdu_ac_queue[i] < 0) { + qn = i; + local->ampdu_ac_queue[qn] = + ieee80211_ac_from_tid(tid); + break; + } + } + spin_unlock(&local->queue_stop_reason_lock); + + if (qn < 0) { +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "BA request denied - " + "queue unavailable for tid %d\n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + ret = -ENOSPC; + goto err_unlock_sta; + } + + /* + * If we successfully allocate the session, we can't have + * anything going on on the queue this TID maps into, so + * stop it for now. This is a "virtual" stop using the same + * mechanism that drivers will use. + * + * XXX: queue up frames for this session in the sta_info + * struct instead to avoid hitting all other STAs. + */ + ieee80211_stop_queue_by_reason( + &local->hw, hw->queues + qn, + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + } + /* prepare A-MPDU MLME for Tx aggregation */ sta->ampdu_mlme.tid_tx[tid] = kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); @@ -262,8 +325,9 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) tid); #endif ret = -ENOMEM; - goto err_unlock_sta; + goto err_return_queue; } + /* Tx timer */ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = sta_addba_resp_timer_expired; @@ -271,49 +335,25 @@ 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); - 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) { -#ifdef CONFIG_MAC80211_HT_DEBUG - printk(KERN_DEBUG "BA request denied - " - "queue unavailable for tid %d\n", tid); -#endif /* CONFIG_MAC80211_HT_DEBUG */ - goto err_unlock_queue; - } - } - sdata = sta->sdata; - /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the * call back right away, it must see that the flow has begun */ *state |= HT_ADDBA_REQUESTED_MSK; - /* This is slightly racy because the queue isn't stopped */ start_seq_num = sta->tid_seq[tid]; ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, &sta->sta, tid, &start_seq_num); if (ret) { - /* 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 */ - 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); #endif /* CONFIG_MAC80211_HT_DEBUG */ *state = HT_AGG_STATE_IDLE; - goto err_unlock_queue; + goto err_free; } + sta->tid_to_tx_q[tid] = qn; - /* Will put all the packets in the new SW queue */ - if (hw->ampdu_queues) - ieee80211_requeue(local, ieee802_1d_to_ac[tid]); spin_unlock_bh(&sta->lock); /* send an addBA request */ @@ -322,7 +362,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) sta->ampdu_mlme.dialog_token_allocator; sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; - ieee80211_send_addba_request(sta->sdata, ra, tid, sta->ampdu_mlme.tid_tx[tid]->dialog_token, sta->ampdu_mlme.tid_tx[tid]->ssn, @@ -334,15 +373,24 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) #ifdef CONFIG_MAC80211_HT_DEBUG printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); #endif - goto exit; + goto unlock; -err_unlock_queue: + err_free: kfree(sta->ampdu_mlme.tid_tx[tid]); sta->ampdu_mlme.tid_tx[tid] = NULL; - ret = -EBUSY; -err_unlock_sta: + err_return_queue: + if (qn >= 0) { + /* We failed, so start queue again right away. */ + ieee80211_wake_queue_by_reason(hw, hw->queues + qn, + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + /* give queue back to pool */ + spin_lock(&local->queue_stop_reason_lock); + local->ampdu_ac_queue[qn] = -1; + spin_unlock(&local->queue_stop_reason_lock); + } + err_unlock_sta: spin_unlock_bh(&sta->lock); -exit: + unlock: rcu_read_unlock(); return ret; } @@ -375,7 +423,7 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) state = &sta->ampdu_mlme.tid_state_tx[tid]; spin_lock_bh(&sta->lock); - if (!(*state & HT_ADDBA_REQUESTED_MSK)) { + if (WARN_ON(!(*state & HT_ADDBA_REQUESTED_MSK))) { #ifdef CONFIG_MAC80211_HT_DEBUG printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", *state); @@ -385,7 +433,8 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) return; } - WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); + if (WARN_ON(*state & HT_ADDBA_DRV_READY_MSK)) + goto out; *state |= HT_ADDBA_DRV_READY_MSK; @@ -393,9 +442,18 @@ 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 - if (hw->ampdu_queues) - ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + if (hw->ampdu_queues) { + /* + * Wake up this queue, we stopped it earlier, + * this will in turn wake the entire AC. + */ + ieee80211_wake_queue_by_reason(hw, + hw->queues + sta->tid_to_tx_q[tid], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + } } + + out: spin_unlock_bh(&sta->lock); rcu_read_unlock(); } @@ -485,7 +543,6 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) struct ieee80211_local *local = hw_to_local(hw); struct sta_info *sta; u8 *state; - int agg_queue; if (tid >= STA_TID_NUM) { #ifdef CONFIG_MAC80211_HT_DEBUG @@ -527,19 +584,19 @@ 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); - if (hw->ampdu_queues) { - agg_queue = sta->tid_to_tx_q[tid]; - ieee80211_ht_agg_queue_remove(local, sta, tid, 1); + spin_lock_bh(&sta->lock); - /* 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 + if (*state & HT_AGG_STATE_INITIATOR_MSK && + hw->ampdu_queues) { + /* + * Wake up this queue, we stopped it earlier, + * this will in turn wake the entire AC. */ - netif_schedule_queue(netdev_get_tx_queue(local->mdev, - agg_queue)); + ieee80211_wake_queue_by_reason(hw, + hw->queues + sta->tid_to_tx_q[tid], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); } - spin_lock_bh(&sta->lock); + *state = HT_AGG_STATE_IDLE; sta->ampdu_mlme.addba_req_num[tid] = 0; kfree(sta->ampdu_mlme.tid_tx[tid]); @@ -613,12 +670,21 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local, #endif /* CONFIG_MAC80211_HT_DEBUG */ if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) == WLAN_STATUS_SUCCESS) { + u8 curstate = *state; + *state |= HT_ADDBA_RECEIVED_MSK; - sta->ampdu_mlme.addba_req_num[tid] = 0; - if (*state == HT_AGG_STATE_OPERATIONAL && - local->hw.ampdu_queues) - ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + if (hw->ampdu_queues && *state != curstate && + *state == HT_AGG_STATE_OPERATIONAL) { + /* + * Wake up this queue, we stopped it earlier, + * this will in turn wake the entire AC. + */ + ieee80211_wake_queue_by_reason(hw, + hw->queues + sta->tid_to_tx_q[tid], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + } + sta->ampdu_mlme.addba_req_num[tid] = 0; if (local->ops->ampdu_action) { (void)local->ops->ampdu_action(hw, diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 2cb743e..e2bbd3f 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -564,12 +564,10 @@ enum { enum queue_stop_reason { IEEE80211_QUEUE_STOP_REASON_DRIVER, IEEE80211_QUEUE_STOP_REASON_PS, - IEEE80211_QUEUE_STOP_REASON_CSA + IEEE80211_QUEUE_STOP_REASON_CSA, + IEEE80211_QUEUE_STOP_REASON_AGGREGATION, }; -/* maximum number of hardware queues we support. */ -#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES) - struct ieee80211_master_priv { struct ieee80211_local *local; }; @@ -582,9 +580,15 @@ struct ieee80211_local { const struct ieee80211_ops *ops; - unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)]; - unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; + /* AC queue corresponding to each AMPDU queue */ + s8 ampdu_ac_queue[IEEE80211_MAX_AMPDU_QUEUES]; + unsigned int amdpu_ac_stop_refcnt[IEEE80211_MAX_AMPDU_QUEUES]; + + unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES + + IEEE80211_MAX_AMPDU_QUEUES]; + /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ spinlock_t queue_stop_reason_lock; + struct net_device *mdev; /* wmaster# - "master" 802.11 device */ int open_count; int monitors, cooked_mntrs; @@ -1042,6 +1046,10 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, enum queue_stop_reason reason); void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, enum queue_stop_reason reason); +void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, + enum queue_stop_reason reason); +void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, + enum queue_stop_reason reason); #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 795f8c4..e918198 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -705,7 +705,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, const struct ieee80211_ops *ops) { struct ieee80211_local *local; - int priv_size; + int priv_size, i; struct wiphy *wiphy; /* Ensure 32-byte alignment of our private data and hw private data. @@ -779,6 +779,11 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, setup_timer(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, (unsigned long) local); + for (i = 0; i < IEEE80211_MAX_AMPDU_QUEUES; i++) + local->ampdu_ac_queue[i] = -1; + /* using an s8 won't work with more than that */ + BUILD_BUG_ON(IEEE80211_MAX_AMPDU_QUEUES > 127); + sta_info_init(local); tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, @@ -872,7 +877,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), "wmaster%d", ieee80211_master_setup, - ieee80211_num_queues(hw)); + hw->queues); if (!mdev) goto fail_mdev_alloc; diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 634f65c..4ba3c54 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -202,6 +202,18 @@ void sta_info_destroy(struct sta_info *sta) /* Make sure timer won't free the tid_rx struct, see below */ if (tid_rx) tid_rx->shutdown = true; + + /* + * The stop callback cannot find this station any more, but + * it didn't complete its work -- start the queue if necessary + */ + if (sta->ampdu_mlme.tid_state_tx[i] & HT_AGG_STATE_INITIATOR_MSK && + sta->ampdu_mlme.tid_state_tx[i] & HT_AGG_STATE_REQ_STOP_BA_MSK && + local->hw.ampdu_queues) + ieee80211_wake_queue_by_reason(&local->hw, + local->hw.queues + sta->tid_to_tx_q[i], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + spin_unlock_bh(&sta->lock); /* @@ -275,8 +287,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, * enable session_timer's data differentiation. refer to * sta_rx_agg_session_timer_expired for useage */ sta->timer_to_tid[i] = i; - /* tid to tx queue: initialize according to HW (0 is valid) */ - sta->tid_to_tx_q[i] = ieee80211_num_queues(&local->hw); + sta->tid_to_tx_q[i] = -1; /* rx */ sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE; sta->ampdu_mlme.tid_rx[i] = NULL; diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index d965323..a2921f1 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -200,7 +200,7 @@ struct sta_ampdu_mlme { * @tid_seq: per-TID sequence numbers for sending to this STA * @ampdu_mlme: A-MPDU state machine state * @timer_to_tid: identity mapping to ID timers - * @tid_to_tx_q: map tid to tx queue + * @tid_to_tx_q: map tid to tx queue (invalid == negative values) * @llid: Local link ID * @plid: Peer link ID * @reason: Cancel reason on PLINK_HOLDING state @@ -275,7 +275,7 @@ struct sta_info { */ struct sta_ampdu_mlme ampdu_mlme; u8 timer_to_tid[STA_TID_NUM]; - u8 tid_to_tx_q[STA_TID_NUM]; + s8 tid_to_tx_q[STA_TID_NUM]; #ifdef CONFIG_MAC80211_MESH /* diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 3392683..6aca498 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -876,7 +876,6 @@ ieee80211_tx_h_stats(struct ieee80211_tx_data *tx) return TX_CONTINUE; } - /* actual transmit path */ /* @@ -1016,12 +1015,20 @@ __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)) { + unsigned long flags; qc = ieee80211_get_qos_ctl(hdr); tid = *qc & IEEE80211_QOS_CTL_TID_MASK; + 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); } if (is_multicast_ether_addr(hdr->addr1)) { @@ -1085,7 +1092,8 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb, int ret, i; if (skb) { - if (netif_subqueue_stopped(local->mdev, skb)) + if (ieee80211_queue_stopped(&local->hw, + skb_get_queue_mapping(skb))) return IEEE80211_TX_PENDING; ret = local->ops->tx(local_to_hw(local), skb); @@ -1101,8 +1109,8 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb, info = IEEE80211_SKB_CB(tx->extra_frag[i]); info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT); - if (netif_subqueue_stopped(local->mdev, - tx->extra_frag[i])) + if (ieee80211_queue_stopped(&local->hw, + skb_get_queue_mapping(tx->extra_frag[i]))) return IEEE80211_TX_FRAG_AGAIN; ret = local->ops->tx(local_to_hw(local), diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 73c7d73..92ea177 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -344,15 +344,36 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, { struct ieee80211_local *local = hw_to_local(hw); - /* we don't need to track ampdu queues */ - if (queue < ieee80211_num_regular_queues(hw)) { - __clear_bit(reason, &local->queue_stop_reasons[queue]); + if (queue >= hw->queues) { + if (local->ampdu_ac_queue[queue - hw->queues] < 0) + return; + + /* + * for virtual aggregation queues, we need to refcount the + * internal mac80211 disable (multiple times!), keep track of + * driver disable _and_ make sure the regular queue is + * actually enabled. + */ + if (reason == IEEE80211_QUEUE_STOP_REASON_AGGREGATION) + local->amdpu_ac_stop_refcnt[queue - hw->queues]--; + else + __clear_bit(reason, &local->queue_stop_reasons[queue]); - if (local->queue_stop_reasons[queue] != 0) - /* someone still has this queue stopped */ + if (local->queue_stop_reasons[queue] || + local->amdpu_ac_stop_refcnt[queue - hw->queues]) return; + + /* now go on to treat the corresponding regular queue */ + queue = local->ampdu_ac_queue[queue - hw->queues]; + reason = IEEE80211_QUEUE_STOP_REASON_AGGREGATION; } + __clear_bit(reason, &local->queue_stop_reasons[queue]); + + if (local->queue_stop_reasons[queue] != 0) + /* someone still has this queue stopped */ + return; + if (test_bit(queue, local->queues_pending)) { set_bit(queue, local->queues_pending_run); tasklet_schedule(&local->tx_pending_tasklet); @@ -361,8 +382,8 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue, } } -static void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, - enum queue_stop_reason reason) +void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, + enum queue_stop_reason reason) { struct ieee80211_local *local = hw_to_local(hw); unsigned long flags; @@ -384,15 +405,33 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue, { struct ieee80211_local *local = hw_to_local(hw); - /* we don't need to track ampdu queues */ - if (queue < ieee80211_num_regular_queues(hw)) - __set_bit(reason, &local->queue_stop_reasons[queue]); + if (queue >= hw->queues) { + if (local->ampdu_ac_queue[queue - hw->queues] < 0) + return; + + /* + * for virtual aggregation queues, we need to refcount the + * internal mac80211 disable (multiple times!), keep track of + * driver disable _and_ make sure the regular queue is + * actually enabled. + */ + if (reason == IEEE80211_QUEUE_STOP_REASON_AGGREGATION) + local->amdpu_ac_stop_refcnt[queue - hw->queues]++; + else + __set_bit(reason, &local->queue_stop_reasons[queue]); + + /* now go on to treat the corresponding regular queue */ + queue = local->ampdu_ac_queue[queue - hw->queues]; + reason = IEEE80211_QUEUE_STOP_REASON_AGGREGATION; + } + + __set_bit(reason, &local->queue_stop_reasons[queue]); netif_stop_subqueue(local->mdev, queue); } -static void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, - enum queue_stop_reason reason) +void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, + enum queue_stop_reason reason) { struct ieee80211_local *local = hw_to_local(hw); unsigned long flags; @@ -418,7 +457,7 @@ void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, spin_lock_irqsave(&local->queue_stop_reason_lock, flags); - for (i = 0; i < ieee80211_num_queues(hw); i++) + for (i = 0; i < hw->queues; i++) __ieee80211_stop_queue(hw, i, reason); spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); @@ -434,6 +473,16 @@ EXPORT_SYMBOL(ieee80211_stop_queues); int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue) { struct ieee80211_local *local = hw_to_local(hw); + unsigned long flags; + + if (queue >= hw->queues) { + spin_lock_irqsave(&local->queue_stop_reason_lock, flags); + queue = local->ampdu_ac_queue[queue - hw->queues]; + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + if (queue < 0) + return true; + } + return __netif_subqueue_stopped(local->mdev, queue); } EXPORT_SYMBOL(ieee80211_queue_stopped); diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index ac71b38..093a4ab 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -114,9 +114,7 @@ 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 sta_info *sta; u16 queue; u8 tid; @@ -124,29 +122,11 @@ u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) 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; @@ -156,140 +136,7 @@ u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) /* 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(); -} diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h index bc62f28..7520d2e 100644 --- a/net/mac80211/wme.h +++ b/net/mac80211/wme.h @@ -21,11 +21,5 @@ extern const int ieee802_1d_to_ac[8]; u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb); -int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, - struct sta_info *sta, u16 tid); -void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, - struct sta_info *sta, u16 tid, - u8 requeue); -void ieee80211_requeue(struct ieee80211_local *local, int queue); #endif /* _WME_H */ |