aboutsummaryrefslogtreecommitdiffstats
path: root/net/mac80211/tx.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c136
1 files changed, 102 insertions, 34 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1fa422782905..b696b9136f4c 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1617,7 +1617,7 @@ static bool ieee80211_queue_skb(struct ieee80211_local *local,
static bool ieee80211_tx_frags(struct ieee80211_local *local,
struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
+ struct sta_info *sta,
struct sk_buff_head *skbs,
bool txpending)
{
@@ -1679,7 +1679,7 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local,
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
info->control.vif = vif;
- control.sta = sta;
+ control.sta = sta ? &sta->sta : NULL;
__skb_unlink(skb, skbs);
drv_tx(local, &control, skb);
@@ -1698,7 +1698,6 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
struct ieee80211_tx_info *info;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_vif *vif;
- struct ieee80211_sta *pubsta;
struct sk_buff *skb;
bool result = true;
__le16 fc;
@@ -1713,11 +1712,6 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
if (sta && !sta->uploaded)
sta = NULL;
- if (sta)
- pubsta = &sta->sta;
- else
- pubsta = NULL;
-
switch (sdata->vif.type) {
case NL80211_IFTYPE_MONITOR:
if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) {
@@ -1744,8 +1738,7 @@ static bool __ieee80211_tx(struct ieee80211_local *local,
break;
}
- result = ieee80211_tx_frags(local, vif, pubsta, skbs,
- txpending);
+ result = ieee80211_tx_frags(local, vif, sta, skbs, txpending);
ieee80211_tpt_led_trig_tx(local, fc, led_len);
@@ -2277,6 +2270,9 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
* isn't always enough to find the interface to use; for proper
* VLAN/WDS support we will need a different mechanism (which
* likely isn't going to be monitor interfaces).
+ *
+ * This is necessary, for example, for old hostapd versions that
+ * don't use nl80211-based management TX/RX.
*/
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -2424,6 +2420,33 @@ static int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
return 0;
}
+static int ieee80211_store_ack_skb(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ u32 *info_flags)
+{
+ struct sk_buff *ack_skb = skb_clone_sk(skb);
+ u16 info_id = 0;
+
+ if (ack_skb) {
+ unsigned long flags;
+ int id;
+
+ spin_lock_irqsave(&local->ack_status_lock, flags);
+ id = idr_alloc(&local->ack_status_frames, ack_skb,
+ 1, 0x40, GFP_ATOMIC);
+ spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+ if (id >= 0) {
+ info_id = id;
+ *info_flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+ } else {
+ kfree_skb(ack_skb);
+ }
+ }
+
+ return info_id;
+}
+
/**
* ieee80211_build_hdr - build 802.11 header in the given frame
* @sdata: virtual interface to build the header for
@@ -2717,26 +2740,8 @@ static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
}
if (unlikely(!multicast && skb->sk &&
- skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS)) {
- struct sk_buff *ack_skb = skb_clone_sk(skb);
-
- if (ack_skb) {
- unsigned long flags;
- int id;
-
- spin_lock_irqsave(&local->ack_status_lock, flags);
- id = idr_alloc(&local->ack_status_frames, ack_skb,
- 1, 0x10000, GFP_ATOMIC);
- spin_unlock_irqrestore(&local->ack_status_lock, flags);
-
- if (id >= 0) {
- info_id = id;
- info_flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
- } else {
- kfree_skb(ack_skb);
- }
- }
- }
+ skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS))
+ info_id = ieee80211_store_ack_skb(local, skb, &info_flags);
/*
* If the skb is shared we need to obtain our own copy.
@@ -3529,7 +3534,7 @@ static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sub_if_data, u.ap);
__skb_queue_tail(&tx.skbs, skb);
- ieee80211_tx_frags(local, &sdata->vif, &sta->sta, &tx.skbs, false);
+ ieee80211_tx_frags(local, &sdata->vif, sta, &tx.skbs, false);
return true;
}
@@ -3549,6 +3554,9 @@ struct sk_buff *ieee80211_tx_dequeue(struct ieee80211_hw *hw,
WARN_ON_ONCE(softirq_count() == 0);
+ if (!ieee80211_txq_airtime_check(hw, txq))
+ return NULL;
+
begin:
spin_lock_bh(&fq->lock);
@@ -3659,6 +3667,21 @@ begin:
}
IEEE80211_SKB_CB(skb)->control.vif = vif;
+
+ if (local->airtime_flags & AIRTIME_USE_AQL) {
+ u32 airtime;
+
+ airtime = ieee80211_calc_expected_tx_airtime(hw, vif, txq->sta,
+ skb->len);
+ if (airtime) {
+ airtime = ieee80211_info_set_tx_time_est(info, airtime);
+ ieee80211_sta_update_pending_airtime(local, tx.sta,
+ txq->ac,
+ airtime,
+ false);
+ }
+ }
+
return skb;
out:
@@ -3672,7 +3695,8 @@ struct ieee80211_txq *ieee80211_next_txq(struct ieee80211_hw *hw, u8 ac)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_txq *ret = NULL;
- struct txq_info *txqi = NULL;
+ struct txq_info *txqi = NULL, *head = NULL;
+ bool found_eligible_txq = false;
spin_lock_bh(&local->active_txq_lock[ac]);
@@ -3683,13 +3707,30 @@ struct ieee80211_txq *ieee80211_next_txq(struct ieee80211_hw *hw, u8 ac)
if (!txqi)
goto out;
+ if (txqi == head) {
+ if (!found_eligible_txq)
+ goto out;
+ else
+ found_eligible_txq = false;
+ }
+
+ if (!head)
+ head = txqi;
+
if (txqi->txq.sta) {
struct sta_info *sta = container_of(txqi->txq.sta,
- struct sta_info, sta);
+ struct sta_info, sta);
+ bool aql_check = ieee80211_txq_airtime_check(hw, &txqi->txq);
+ s64 deficit = sta->airtime[txqi->txq.ac].deficit;
+
+ if (aql_check)
+ found_eligible_txq = true;
- if (sta->airtime[txqi->txq.ac].deficit < 0) {
+ if (deficit < 0)
sta->airtime[txqi->txq.ac].deficit +=
sta->airtime_weight;
+
+ if (deficit < 0 || !aql_check) {
list_move_tail(&txqi->schedule_order,
&local->active_txqs[txqi->txq.ac]);
goto begin;
@@ -3743,6 +3784,33 @@ void __ieee80211_schedule_txq(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(__ieee80211_schedule_txq);
+bool ieee80211_txq_airtime_check(struct ieee80211_hw *hw,
+ struct ieee80211_txq *txq)
+{
+ struct sta_info *sta;
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (!(local->airtime_flags & AIRTIME_USE_AQL))
+ return true;
+
+ if (!txq->sta)
+ return true;
+
+ sta = container_of(txq->sta, struct sta_info, sta);
+ if (atomic_read(&sta->airtime[txq->ac].aql_tx_pending) <
+ sta->airtime[txq->ac].aql_limit_low)
+ return true;
+
+ if (atomic_read(&local->aql_total_pending_airtime) <
+ local->aql_threshold &&
+ atomic_read(&sta->airtime[txq->ac].aql_tx_pending) <
+ sta->airtime[txq->ac].aql_limit_high)
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL(ieee80211_txq_airtime_check);
+
bool ieee80211_txq_may_transmit(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.