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Code Issues Releases Wiki Activity

mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue

Browse source 
Make ieee80211_tx_h_rate_ctrl() get called on dequeue to improve
performance since it reduces the turnaround time for rate control.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/20210617163113.75815-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ryder Lee 2021-06-17 18:31:12 +02:00 committed by Johannes Berg
parent 08a46c6420
commit 03c3911d2d
1 changed files with 29 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

52
net/mac80211/tx.c
View file

@ -1768,8 +1768,6 @@ static int invoke_tx_handlers_early(struct ieee80211_tx_data *tx)
CALL_TXH(ieee80211_tx_h_ps_buf);
CALL_TXH(ieee80211_tx_h_check_control_port_protocol);
CALL_TXH(ieee80211_tx_h_select_key);
if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL))
CALL_TXH(ieee80211_tx_h_rate_ctrl);
txh_done:
if (unlikely(res == TX_DROP)) {
@ -1802,6 +1800,9 @@ static int invoke_tx_handlers_late(struct ieee80211_tx_data *tx)
goto txh_done;
}
if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL))
CALL_TXH(ieee80211_tx_h_rate_ctrl);
CALL_TXH(ieee80211_tx_h_michael_mic_add);
CALL_TXH(ieee80211_tx_h_sequence);
CALL_TXH(ieee80211_tx_h_fragment);
@ -3389,15 +3390,21 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata,
* Can be called while the sta lock is held. Anything that can cause packets to
* be generated will cause deadlock!
*/
static void ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 pn_offs,
struct ieee80211_key *key,
struct sk_buff *skb)
static ieee80211_tx_result
ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 pn_offs,
struct ieee80211_key *key,
struct ieee80211_tx_data *tx)
{
struct sk_buff *skb = tx->skb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (void *)skb->data;
u8 tid = IEEE80211_NUM_TIDS;
if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL) &&
ieee80211_tx_h_rate_ctrl(tx) != TX_CONTINUE)
return TX_DROP;
if (key)
info->control.hw_key = &key->conf;
@ -3446,6 +3453,8 @@ static void ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
break;
}
}
return TX_CONTINUE;
}
static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
@ -3549,24 +3558,17 @@ static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
tx.sta = sta;
tx.key = fast_tx->key;
if (!ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
tx.skb = skb;
r = ieee80211_tx_h_rate_ctrl(&tx);
skb = tx.skb;
tx.skb = NULL;
if (r != TX_CONTINUE) {
if (r != TX_QUEUED)
kfree_skb(skb);
return true;
}
}
if (ieee80211_queue_skb(local, sdata, sta, skb))
return true;
ieee80211_xmit_fast_finish(sdata, sta, fast_tx->pn_offs,
fast_tx->key, skb);
tx.skb = skb;
r = ieee80211_xmit_fast_finish(sdata, sta, fast_tx->pn_offs,
fast_tx->key, &tx);
tx.skb = NULL;
if (r == TX_DROP) {
kfree_skb(skb);
return true;
}
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
sdata = container_of(sdata->bss,
@ -3683,8 +3685,12 @@ struct sk_buff *ieee80211_tx_dequeue(struct ieee80211_hw *hw,
(tx.key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
pn_offs = ieee80211_hdrlen(hdr->frame_control);
ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
tx.key, skb);
r = ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
tx.key, &tx);
if (r != TX_CONTINUE) {
ieee80211_free_txskb(&local->hw, skb);
goto begin;
}
} else {
if (invoke_tx_handlers_late(&tx))
goto begin;