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mac80211: simplify TX aggregation start

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There really is no need to make drivers call the
ieee80211_start_tx_ba_cb_irqsafe() function and then
schedule the worker if all we want is to set a bit.

Add a new return value (that was previously considered
invalid) to indicate that the driver is immediately
ready for the session, and make drivers use it. The
only drivers that remain different are the Intel ones
as they need to negotiate more with the firmware.

Link: https://lore.kernel.org/r/1570007543-I152912660131cbab2e5d80b4218238c20f8a06e5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2019-10-02 11:12:25 +02:00
parent 4fd0328d2f
commit 2ce113de31
20 changed files with 39 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath/ath9k/htc_drv_main.c
View File

@ -1674,7 +1674,7 @@ static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
case IEEE80211_AMPDU_TX_START:
ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
if (!ret)
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:

2
drivers/net/wireless/ath/ath9k/main.c
View File

@ -1921,7 +1921,7 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
ath9k_ps_wakeup(sc);
ret = ath_tx_aggr_start(sc, sta, tid, ssn);
if (!ret)
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
ath9k_ps_restore(sc);
break;
case IEEE80211_AMPDU_TX_STOP_FLUSH:

3
drivers/net/wireless/ath/carl9170/main.c
View File

@ -1449,8 +1449,7 @@ static int carl9170_op_ampdu_action(struct ieee80211_hw *hw,
rcu_assign_pointer(sta_info->agg[tid], tid_info);
spin_unlock_bh(&ar->tx_ampdu_list_lock);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:

5
drivers/net/wireless/ath/wcn36xx/main.c
View File

@ -1084,6 +1084,7 @@ static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
u16 *ssn = &params->ssn;
int ret = 0;
wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
action, tid);
@ -1106,7 +1107,7 @@ static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
spin_unlock_bh(&sta_priv->ampdu_lock);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
spin_lock_bh(&sta_priv->ampdu_lock);
@ -1131,7 +1132,7 @@ static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
mutex_unlock(&wcn->conf_mutex);
return 0;
return ret;
}
static const struct ieee80211_ops wcn36xx_ops = {

3
drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c
View File

@ -850,8 +850,7 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw,
"START: tid %d is not agg\'able\n", tid);
return -EINVAL;
}
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:

2
drivers/net/wireless/intel/iwlegacy/4965-mac.c
View File

@ -2265,7 +2265,7 @@ il4965_tx_agg_start(struct il_priv *il, struct ieee80211_vif *vif,
if (tid_data->tfds_in_queue == 0) {
D_HT("HW queue is empty\n");
tid_data->agg.state = IL_AGG_ON;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
} else {
D_HT("HW queue is NOT empty: %d packets in HW queue\n",
tid_data->tfds_in_queue);

2
drivers/net/wireless/intel/iwlwifi/dvm/tx.c
View File

@ -621,7 +621,7 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n",
tid_data->agg.ssn);
tid_data->agg.state = IWL_AGG_STARTING;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
} else {
IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, "
"next_reclaimed = %d\n",

5
drivers/net/wireless/intel/iwlwifi/mvm/sta.c
View File

@ -2818,13 +2818,12 @@ int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
if (normalized_ssn == tid_data->next_reclaimed) {
tid_data->state = IWL_AGG_STARTING;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
} else {
tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;
ret = 0;
}
ret = 0;
out:
spin_unlock_bh(&mvmsta->lock);

3
drivers/net/wireless/mac80211_hwsim.c
View File

@ -1979,8 +1979,7 @@ static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
switch (action) {
case IEEE80211_AMPDU_TX_START:
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:

2
drivers/net/wireless/marvell/mwl8k.c
View File

@ -5520,7 +5520,7 @@ mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
rc = -EBUSY;
break;
}
ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:

3
drivers/net/wireless/mediatek/mt76/mt7603/main.c
View File

@ -582,8 +582,7 @@ mt7603_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
break;
case IEEE80211_AMPDU_TX_START:
mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
mtxq->aggr = false;
mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, -1);

3
drivers/net/wireless/mediatek/mt76/mt7615/main.c
View File

@ -477,8 +477,7 @@ mt7615_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
break;
case IEEE80211_AMPDU_TX_START:
mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
mtxq->aggr = false;
mt7615_mcu_set_tx_ba(dev, params, 0);

3
drivers/net/wireless/mediatek/mt76/mt76x02_util.c
View File

@ -393,8 +393,7 @@ int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
break;
case IEEE80211_AMPDU_TX_START:
mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
mtxq->aggr = false;
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);

3
drivers/net/wireless/mediatek/mt7601u/main.c
View File

@ -372,8 +372,7 @@ mt76_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
break;
case IEEE80211_AMPDU_TX_START:
msta->agg_ssn[tid] = ssn << 4;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;

4
drivers/net/wireless/ralink/rt2x00/rt2800lib.c
View File

@ -10476,7 +10476,7 @@ int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
* when the hw reorders frames due to aggregation.
*/
if (sta_priv->wcid > WCID_END)
return 1;
return -ENOSPC;
switch (action) {
case IEEE80211_AMPDU_RX_START:
@ -10489,7 +10489,7 @@ int rt2800_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
*/
break;
case IEEE80211_AMPDU_TX_START:
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:

3
drivers/net/wireless/realtek/rtlwifi/base.c
View File

@ -1776,8 +1776,7 @@ int rtl_tx_agg_start(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
tid_data->agg.agg_state = RTL_AGG_START;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
return 0;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
}
int rtl_tx_agg_stop(struct ieee80211_hw *hw, struct ieee80211_vif *vif,

3
drivers/net/wireless/realtek/rtw88/mac80211.c
View File

@ -437,8 +437,7 @@ static int rtw_ops_ampdu_action(struct ieee80211_hw *hw,
switch (params->action) {
case IEEE80211_AMPDU_TX_START:
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:

3
drivers/net/wireless/rsi/rsi_91x_mac80211.c
View File

@ -1140,8 +1140,7 @@ static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
else if ((vif->type == NL80211_IFTYPE_AP) ||
(vif->type == NL80211_IFTYPE_P2P_GO))
rsta->seq_start[tid] = seq_no;
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
status = 0;
status = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break;
case IEEE80211_AMPDU_TX_STOP_CONT:

11
include/net/mac80211.h
View File

@ -3095,7 +3095,9 @@ enum ieee80211_filter_flags {
*
* @IEEE80211_AMPDU_RX_START: start RX aggregation
* @IEEE80211_AMPDU_RX_STOP: stop RX aggregation
* @IEEE80211_AMPDU_TX_START: start TX aggregation
* @IEEE80211_AMPDU_TX_START: start TX aggregation, the driver must either
* call ieee80211_start_tx_ba_cb_irqsafe() or return the special
* status %IEEE80211_AMPDU_TX_START_IMMEDIATE.
* @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational
* @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting
* queued packets, now unaggregated. After all packets are transmitted the
@ -3119,6 +3121,8 @@ enum ieee80211_ampdu_mlme_action {
IEEE80211_AMPDU_TX_OPERATIONAL,
};
#define IEEE80211_AMPDU_TX_START_IMMEDIATE 1
/**
* struct ieee80211_ampdu_params - AMPDU action parameters
*
@ -3896,7 +3900,10 @@ struct ieee80211_ops {
*
* Even ``189`` would be wrong since 1 could be lost again.
*
* Returns a negative error code on failure.
* Returns a negative error code on failure. The driver may return
* %IEEE80211_AMPDU_TX_START_IMMEDIATE for %IEEE80211_AMPDU_TX_START
* if the session can start immediately.
*
* The callback can sleep.
*/
int (*ampdu_action)(struct ieee80211_hw *hw,

9
net/mac80211/agg-tx.c
View File

@ -485,7 +485,14 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid)
params.ssn = sta->tid_seq[tid] >> 4;
ret = drv_ampdu_action(local, sdata, &params);
if (ret) {
if (ret == IEEE80211_AMPDU_TX_START_IMMEDIATE) {
/*
* We didn't send the request yet, so don't need to check
* here if we already got a response, just mark as driver
* ready immediately.
*/
set_bit(HT_AGG_STATE_DRV_READY, &tid_tx->state);
} else if (ret) {
ht_dbg(sdata,
"BA request denied - HW unavailable for %pM tid %d\n",
sta->sta.addr, tid);