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mac80211: remove channel type argument from rate_update 

The channel type argument to the rate_update()
callback isn't really the correct way to give
the rate control algorithm about the desired
RX bandwidth of the peer.

Remove this argument, and instead update the
STA capabilities with 20/40 appropriately. The
SMPS update done by this callback works in the
same way, so this makes the callback cleaner.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-03-28 10:58:37 +02:00 committed by John W. Linville
parent 24398e39c8
commit 64f68e5d15
10 changed files with 50 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/ath/ath9k/rc.c
View File

@ -1436,7 +1436,7 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
u32 changed, enum nl80211_channel_type oper_chan_type)
u32 changed)
{
struct ath_softc *sc = priv;
struct ath_rate_priv *ath_rc_priv = priv_sta;
@ -1451,8 +1451,7 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
return;
if (oper_chan_type == NL80211_CHAN_HT40MINUS ||
oper_chan_type == NL80211_CHAN_HT40PLUS)
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
oper_cw40 = true;
if (oper_cw40)

3
drivers/net/wireless/rtlwifi/rc.c
View File

@ -225,8 +225,7 @@ static void rtl_rate_init(void *ppriv,
static void rtl_rate_update(void *ppriv,
struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
u32 changed,
enum nl80211_channel_type oper_chan_type)
u32 changed)
{
}

5
include/net/mac80211.h
View File

@ -3569,9 +3569,8 @@ struct rate_control_ops {
void (*rate_init)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta);
void (*rate_update)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta,
void *priv_sta, u32 changed,
enum nl80211_channel_type oper_chan_type);
struct ieee80211_sta *sta, void *priv_sta,
u32 changed);
void (*free_sta)(void *priv, struct ieee80211_sta *sta,
void *priv_sta);

26
net/mac80211/chan.c
View File

@ -135,29 +135,3 @@ bool ieee80211_set_channel_type(struct ieee80211_local *local,
return result;
}
/*
* ieee80211_get_tx_channel_type returns the channel type we should
* use for packet transmission, given the channel capability and
* whatever regulatory flags we have been given.
*/
enum nl80211_channel_type ieee80211_get_tx_channel_type(
struct ieee80211_local *local,
enum nl80211_channel_type channel_type)
{
switch (channel_type) {
case NL80211_CHAN_HT40PLUS:
if (local->hw.conf.channel->flags &
IEEE80211_CHAN_NO_HT40PLUS)
return NL80211_CHAN_HT20;
break;
case NL80211_CHAN_HT40MINUS:
if (local->hw.conf.channel->flags &
IEEE80211_CHAN_NO_HT40MINUS)
return NL80211_CHAN_HT20;
break;
default:
break;
}
return channel_type;
}

5
net/mac80211/ieee80211_i.h
View File

@ -512,8 +512,6 @@ struct ieee80211_if_managed {
int rssi_min_thold, rssi_max_thold;
int last_ave_beacon_signal;
enum nl80211_channel_type tx_chantype;
struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
};
@ -1501,9 +1499,6 @@ bool ieee80211_set_channel_type(struct ieee80211_local *local,
enum nl80211_channel_type chantype);
enum nl80211_channel_type
ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper);
enum nl80211_channel_type ieee80211_get_tx_channel_type(
struct ieee80211_local *local,
enum nl80211_channel_type channel_type);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline

51
net/mac80211/mlme.c
View File

@ -180,21 +180,38 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
u32 changed = 0;
u16 ht_opmode;
enum nl80211_channel_type channel_type;
bool disable_40 = false;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
channel_type = local->hw.conf.channel_type;
if (WARN_ON_ONCE(channel_type == NL80211_CHAN_NO_HT))
return 0;
channel_type = ieee80211_get_tx_channel_type(local, channel_type);
switch (sdata->vif.bss_conf.channel_type) {
case NL80211_CHAN_HT40PLUS:
if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40PLUS)
disable_40 = true;
break;
case NL80211_CHAN_HT40MINUS:
if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40MINUS)
disable_40 = true;
break;
default:
break;
}
/* This can change during the lifetime of the BSS */
if (!(ht_oper->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
channel_type = NL80211_CHAN_HT20;
disable_40 = true;
if (!reconfig || (sdata->u.mgd.tx_chantype != channel_type)) {
mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, bssid);
WARN_ON_ONCE(!sta);
if (sta && !sta->supports_40mhz)
disable_40 = true;
if (sta && (!reconfig ||
(disable_40 != !!(sta->sta.ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40)))) {
if (reconfig) {
/*
* Whenever the AP announces the HT mode changed
@ -211,20 +228,19 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
drv_flush(local, false);
}
rcu_read_lock();
sta = sta_info_get(sdata, bssid);
if (sta)
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED,
channel_type);
rcu_read_unlock();
if (disable_40)
sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
else
sta->sta.ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sdata->u.mgd.tx_chantype = channel_type;
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED);
if (reconfig)
ieee80211_wake_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE);
}
mutex_unlock(&local->sta_mtx);
ht_opmode = le16_to_cpu(ht_oper->operation_mode);
@ -2006,6 +2022,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
elems.ht_cap_elem, &sta->sta.ht_cap);
sta->supports_40mhz =
sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
rate_control_rate_init(sta);
if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)

5
net/mac80211/rate.h
View File

@ -63,8 +63,7 @@ static inline void rate_control_rate_init(struct sta_info *sta)
static inline void rate_control_rate_update(struct ieee80211_local *local,
struct ieee80211_supported_band *sband,
struct sta_info *sta, u32 changed,
enum nl80211_channel_type oper_chan_type)
struct sta_info *sta, u32 changed)
{
struct rate_control_ref *ref = local->rate_ctrl;
struct ieee80211_sta *ista = &sta->sta;
@ -72,7 +71,7 @@ static inline void rate_control_rate_update(struct ieee80211_local *local,
if (ref && ref->ops->rate_update)
ref->ops->rate_update(ref->priv, sband, ista,
priv_sta, changed, oper_chan_type);
priv_sta, changed);
}
static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,

15
net/mac80211/rc80211_minstrel_ht.c
View File

@ -686,8 +686,7 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
static void
minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
enum nl80211_channel_type oper_chan_type)
struct ieee80211_sta *sta, void *priv_sta)
{
struct minstrel_priv *mp = priv;
struct minstrel_ht_sta_priv *msp = priv_sta;
@ -735,10 +734,6 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING)
mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
if (oper_chan_type != NL80211_CHAN_HT40MINUS &&
oper_chan_type != NL80211_CHAN_HT40PLUS)
sta_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
smps = (sta_cap & IEEE80211_HT_CAP_SM_PS) >>
IEEE80211_HT_CAP_SM_PS_SHIFT;
@ -788,17 +783,15 @@ static void
minstrel_ht_rate_init(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta)
{
struct minstrel_priv *mp = priv;
minstrel_ht_update_caps(priv, sband, sta, priv_sta, mp->hw->conf.channel_type);
minstrel_ht_update_caps(priv, sband, sta, priv_sta);
}
static void
minstrel_ht_rate_update(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
u32 changed, enum nl80211_channel_type oper_chan_type)
u32 changed)
{
minstrel_ht_update_caps(priv, sband, sta, priv_sta, oper_chan_type);
minstrel_ht_update_caps(priv, sband, sta, priv_sta);
}
static void *

7
net/mac80211/rx.c
View File

@ -2268,11 +2268,8 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
sband = rx->local->hw.wiphy->bands[status->band];
rate_control_rate_update(
local, sband, rx->sta,
IEEE80211_RC_SMPS_CHANGED,
ieee80211_get_tx_channel_type(
local, local->_oper_channel_type));
rate_control_rate_update(local, sband, rx->sta,
IEEE80211_RC_SMPS_CHANGED);
goto handled;
}
default:

2
net/mac80211/sta_info.h
View File

@ -369,6 +369,8 @@ struct sta_info {
unsigned int lost_packets;
unsigned int beacon_loss_count;
bool supports_40mhz;
/* keep last! */
struct ieee80211_sta sta;
};