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mac80211: make rate control tx status API more extensible

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Rename .tx_status_noskb to .tx_status_ext and pass a new on-stack
struct ieee80211_tx_status instead of struct ieee80211_tx_info.

This struct can be used to pass extra information, e.g. for dynamic tx
power control

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2017-04-26 17:11:35 +02:00 committed by Johannes Berg
parent dcba665b1f
commit 18fb84d986
6 changed files with 58 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
include/net/mac80211.h
View File

@ -948,6 +948,19 @@ struct ieee80211_tx_info {
};
};
/**
* struct ieee80211_tx_status - extended tx staus info for rate control
*
* @sta: Station that the packet was transmitted for
* @info: Basic tx status information
* @skb: Packet skb (can be NULL if not provided by the driver)
*/
struct ieee80211_tx_status {
struct ieee80211_sta *sta;
struct ieee80211_tx_info *info;
struct sk_buff *skb;
};
/**
* struct ieee80211_scan_ies - descriptors for different blocks of IEs
*
@ -5471,10 +5484,9 @@ struct rate_control_ops {
void (*free_sta)(void *priv, struct ieee80211_sta *sta,
void *priv_sta);
void (*tx_status_noskb)(void *priv,
struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_info *info);
void (*tx_status_ext)(void *priv,
struct ieee80211_supported_band *sband,
void *priv_sta, struct ieee80211_tx_status *st);
void (*tx_status)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb);

22
net/mac80211/rate.c
View File

@ -62,6 +62,28 @@ void rate_control_rate_init(struct sta_info *sta)
set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
}
void rate_control_tx_status(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct ieee80211_tx_status *st)
{
struct rate_control_ref *ref = local->rate_ctrl;
struct sta_info *sta = container_of(st->sta, struct sta_info, sta);
void *priv_sta = sta->rate_ctrl_priv;
if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
return;
spin_lock_bh(&sta->rate_ctrl_lock);
if (ref->ops->tx_status_ext)
ref->ops->tx_status_ext(ref->priv, sband, priv_sta, st);
else if (st->skb)
ref->ops->tx_status(ref->priv, sband, st->sta, priv_sta, st->skb);
else
WARN_ON_ONCE(1);
spin_unlock_bh(&sta->rate_ctrl_lock);
}
void rate_control_rate_update(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct sta_info *sta, u32 changed)

44
net/mac80211/rate.h
View File

@ -28,47 +28,9 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct ieee80211_tx_rate_control *txrc);
static inline void rate_control_tx_status(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct sta_info *sta,
struct sk_buff *skb)
{
struct rate_control_ref *ref = local->rate_ctrl;
struct ieee80211_sta *ista = &sta->sta;
void *priv_sta = sta->rate_ctrl_priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
return;
spin_lock_bh(&sta->rate_ctrl_lock);
if (ref->ops->tx_status)
ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
else
ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
spin_unlock_bh(&sta->rate_ctrl_lock);
}
static inline void
rate_control_tx_status_noskb(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct sta_info *sta,
struct ieee80211_tx_info *info)
{
struct rate_control_ref *ref = local->rate_ctrl;
struct ieee80211_sta *ista = &sta->sta;
void *priv_sta = sta->rate_ctrl_priv;
if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
return;
if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
return;
spin_lock_bh(&sta->rate_ctrl_lock);
ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
spin_unlock_bh(&sta->rate_ctrl_lock);
}
void rate_control_tx_status(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct ieee80211_tx_status *st);
void rate_control_rate_init(struct sta_info *sta);
void rate_control_rate_update(struct ieee80211_local *local,

6
net/mac80211/rc80211_minstrel.c
View File

@ -264,9 +264,9 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
static void
minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_info *info)
void *priv_sta, struct ieee80211_tx_status *st)
{
struct ieee80211_tx_info *info = st->info;
struct minstrel_priv *mp = priv;
struct minstrel_sta_info *mi = priv_sta;
struct ieee80211_tx_rate *ar = info->status.rates;
@ -726,7 +726,7 @@ static u32 minstrel_get_expected_throughput(void *priv_sta)
const struct rate_control_ops mac80211_minstrel = {
.name = "minstrel",
.tx_status_noskb = minstrel_tx_status,
.tx_status_ext = minstrel_tx_status,
.get_rate = minstrel_get_rate,
.rate_init = minstrel_rate_init,
.alloc = minstrel_alloc,

10
net/mac80211/rc80211_minstrel_ht.c
View File

@ -678,9 +678,9 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
static void
minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_info *info)
void *priv_sta, struct ieee80211_tx_status *st)
{
struct ieee80211_tx_info *info = st->info;
struct minstrel_ht_sta_priv *msp = priv_sta;
struct minstrel_ht_sta *mi = &msp->ht;
struct ieee80211_tx_rate *ar = info->status.rates;
@ -690,8 +690,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
int i;
if (!msp->is_ht)
return mac80211_minstrel.tx_status_noskb(priv, sband, sta,
&msp->legacy, info);
return mac80211_minstrel.tx_status_ext(priv, sband,
&msp->legacy, st);
/* This packet was aggregated but doesn't carry status info */
if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
@ -1374,7 +1374,7 @@ static u32 minstrel_ht_get_expected_throughput(void *priv_sta)
static const struct rate_control_ops mac80211_minstrel_ht = {
.name = "minstrel_ht",
.tx_status_noskb = minstrel_ht_tx_status,
.tx_status_ext = minstrel_ht_tx_status,
.get_rate = minstrel_ht_get_rate,
.rate_init = minstrel_ht_rate_init,
.rate_update = minstrel_ht_rate_update,

11
net/mac80211/status.c
View File

@ -637,6 +637,7 @@ void ieee80211_tx_status_noskb(struct ieee80211_hw *hw,
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_supported_band *sband;
struct ieee80211_tx_status status = {};
int retry_count;
bool acked, noack_success;
@ -669,7 +670,9 @@ void ieee80211_tx_status_noskb(struct ieee80211_hw *hw,
ieee80211_lost_packet(sta, info);
}
rate_control_tx_status_noskb(local, sband, sta, info);
status.sta = pubsta;
status.info = info;
rate_control_tx_status(local, sband, &status);
}
if (acked || noack_success) {
@ -748,6 +751,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_status status = {};
__le16 fc;
struct ieee80211_supported_band *sband;
struct rhlist_head *tmp;
@ -857,7 +861,10 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
}
}
rate_control_tx_status(local, sband, sta, skb);
status.sta = &sta->sta;
status.skb = skb;
status.info = info;
rate_control_tx_status(local, sband, &status);
if (ieee80211_vif_is_mesh(&sta->sdata->vif))
ieee80211s_update_metric(local, sta, skb);