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mac80211: stop toggling IEEE80211_HT_CAP_SUP_WIDTH_20_40

Browse Source 
For VHT, many more bandwidth changes are possible. As a first
step, stop toggling the IEEE80211_HT_CAP_SUP_WIDTH_20_40 flag
in the HT capabilities and instead introduce a bandwidth field
indicating the currently usable bandwidth to transmit to the
station. Of course, make all drivers use it.

To achieve this, make ieee80211_ht_cap_ie_to_sta_ht_cap() get
the station as an argument, rather than the new capabilities,
so it can set up the new bandwidth field.

If the station is a VHT station and VHT bandwidth is in use,
also set the bandwidth accordingly.

Doing this allows us to get rid of the supports_40mhz flag as
the HT capabilities now reflect the true capability instead of
the current setting.

While at it, also fix ieee80211_ht_cap_ie_to_sta_ht_cap() to not
ignore HT cap overrides when MCS TX isn't supported (not that it
really happens...)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-02-07 11:47:44 +01:00
parent 4a34215ef7
commit e1a0c6b3a4
27 changed files with 184 additions and 158 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -1204,7 +1204,7 @@ static u8 ath_rc_build_ht_caps(struct ath_softc *sc, struct ieee80211_sta *sta)
caps |= WLAN_RC_TS_FLAG | WLAN_RC_DS_FLAG;
else if (sta->ht_cap.mcs.rx_mask[1])
caps |= WLAN_RC_DS_FLAG;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
caps |= WLAN_RC_40_FLAG;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
caps |= WLAN_RC_SGI_FLAG;

2
drivers/net/wireless/iwlwifi/dvm/agn.h
View File

@ -338,7 +338,7 @@ int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_sta_ht_cap *ht_cap);
struct ieee80211_sta *sta);
static inline int iwl_sta_id(struct ieee80211_sta *sta)
{

6
drivers/net/wireless/iwlwifi/dvm/rs.c
View File

@ -1305,7 +1305,7 @@ static int rs_switch_to_mimo2(struct iwl_priv *priv,
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_mimo2_rate;
if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(priv, ctx, sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;
@ -1361,7 +1361,7 @@ static int rs_switch_to_mimo3(struct iwl_priv *priv,
tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
rate_mask = lq_sta->active_mimo3_rate;
if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(priv, ctx, sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;
@ -1410,7 +1410,7 @@ static int rs_switch_to_siso(struct iwl_priv *priv,
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_siso_rate;
if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(priv, ctx, sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;

19
drivers/net/wireless/iwlwifi/dvm/sta.c
View File

@ -173,7 +173,7 @@ int iwl_send_add_sta(struct iwl_priv *priv,
bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_sta_ht_cap *ht_cap)
struct ieee80211_sta *sta)
{
if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
return false;
@ -183,20 +183,11 @@ bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
return false;
#endif
/*
* Remainder of this function checks ht_cap, but if it's
* NULL then we can do HT40 (special case for RXON)
*/
if (!ht_cap)
/* special case for RXON */
if (!sta)
return true;
if (!ht_cap->ht_supported)
return false;
if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
return false;
return true;
return sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
static void iwl_sta_calc_ht_flags(struct iwl_priv *priv,
@ -246,7 +237,7 @@ static void iwl_sta_calc_ht_flags(struct iwl_priv *priv,
*flags |= cpu_to_le32(
(u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(priv, ctx, sta))
*flags |= STA_FLG_HT40_EN_MSK;
}

24
drivers/net/wireless/iwlwifi/mvm/rs.c
View File

@ -1209,23 +1209,9 @@ static s32 rs_get_best_rate(struct iwl_mvm *mvm,
return new_rate;
}
static bool iwl_is_ht40_tx_allowed(struct iwl_mvm *mvm,
struct ieee80211_sta_ht_cap *ht_cap)
static bool iwl_is_ht40_tx_allowed(struct ieee80211_sta *sta)
{
/*
* Remainder of this function checks ht_cap, but if it's
* NULL then we can do HT40 (special case for RXON)
*/
if (!ht_cap)
return true;
if (!ht_cap->ht_supported)
return false;
if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
return false;
return true;
return sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
/*
@ -1258,7 +1244,7 @@ static int rs_switch_to_mimo2(struct iwl_mvm *mvm,
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_mimo2_rate;
if (iwl_is_ht40_tx_allowed(mvm, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;
@ -1311,7 +1297,7 @@ static int rs_switch_to_mimo3(struct iwl_mvm *mvm,
tbl->max_search = IWL_MAX_11N_MIMO3_SEARCH;
rate_mask = lq_sta->active_mimo3_rate;
if (iwl_is_ht40_tx_allowed(mvm, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;
@ -1356,7 +1342,7 @@ static int rs_switch_to_siso(struct iwl_mvm *mvm,
tbl->max_search = IWL_MAX_SEARCH;
rate_mask = lq_sta->active_siso_rate;
if (iwl_is_ht40_tx_allowed(mvm, &sta->ht_cap))
if (iwl_is_ht40_tx_allowed(sta))
tbl->is_ht40 = 1;
else
tbl->is_ht40 = 0;

7
drivers/net/wireless/rtlwifi/base.c
View File

@ -523,8 +523,8 @@ static void _rtl_query_shortgi(struct ieee80211_hw *hw,
if (mac->opmode == NL80211_IFTYPE_STATION)
bw_40 = mac->bw_40;
else if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC)
bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
mac->opmode == NL80211_IFTYPE_ADHOC)
bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
if (bw_40 && sgi_40)
tcb_desc->use_shortgi = true;
@ -634,8 +634,7 @@ static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
return;
if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (!(sta->ht_cap.ht_supported) ||
!(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
return;
} else if (mac->opmode == NL80211_IFTYPE_STATION) {
if (!mac->bw_40 || !(sta->ht_cap.ht_supported))

5
drivers/net/wireless/rtlwifi/rc.c
View File

@ -116,9 +116,8 @@ static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
if (txrc->short_preamble)
rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta && (sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40))
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta && (sta->bandwidth >= IEEE80211_STA_RX_BW_40))
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
} else {
if (mac->bw_40)

6
drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
View File

@ -1846,9 +1846,9 @@ static void rtl92ce_update_hal_rate_mask(struct ieee80211_hw *hw,
struct rtl_sta_info *sta_entry = NULL;
u32 ratr_bitmap;
u8 ratr_index;
u8 curtxbw_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
? 1 : 0;
u8 curshortgi_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
u8 curtxbw_40mhz = (sta->bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0;
u8 curshortgi_40mhz = curtxbw_40mhz &&
(sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
1 : 0;
u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ?
1 : 0;

3
drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
View File

@ -626,8 +626,7 @@ void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
} else if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta)
bw_40 = sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;

3
drivers/net/wireless/rtlwifi/rtl8192de/hw.c
View File

@ -1970,8 +1970,7 @@ static void rtl92de_update_hal_rate_mask(struct ieee80211_hw *hw,
struct rtl_sta_info *sta_entry = NULL;
u32 ratr_bitmap;
u8 ratr_index;
u8 curtxbw_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
? 1 : 0;
u8 curtxbw_40mhz = (sta->bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0;
u8 curshortgi_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
1 : 0;
u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ?

3
drivers/net/wireless/rtlwifi/rtl8192de/trx.c
View File

@ -574,8 +574,7 @@ void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
} else if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta)
bw_40 = sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc);

3
drivers/net/wireless/rtlwifi/rtl8192se/hw.c
View File

@ -2085,8 +2085,7 @@ static void rtl92se_update_hal_rate_mask(struct ieee80211_hw *hw,
struct rtl_sta_info *sta_entry = NULL;
u32 ratr_bitmap;
u8 ratr_index = 0;
u8 curtxbw_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
? 1 : 0;
u8 curtxbw_40mhz = (sta->bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0;
u8 curshortgi_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
1 : 0;
u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ?

3
drivers/net/wireless/rtlwifi/rtl8192se/trx.c
View File

@ -621,8 +621,7 @@ void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
} else if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta)
bw_40 = sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;

3
drivers/net/wireless/rtlwifi/rtl8723ae/hw.c
View File

@ -1866,8 +1866,7 @@ static void rtl8723ae_update_hal_rate_mask(struct ieee80211_hw *hw,
struct rtl_sta_info *sta_entry = NULL;
u32 ratr_bitmap;
u8 ratr_index;
u8 curtxbw_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
? 1 : 0;
u8 curtxbw_40mhz = (sta->bandwidth >= IEEE80211_STA_RX_BW_40) ? 1 : 0;
u8 curshortgi_40mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
1 : 0;
u8 curshortgi_20mhz = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ?

3
drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
View File

@ -395,8 +395,7 @@ void rtl8723ae_tx_fill_desc(struct ieee80211_hw *hw,
} else if (mac->opmode == NL80211_IFTYPE_AP ||
mac->opmode == NL80211_IFTYPE_ADHOC) {
if (sta)
bw_40 = sta->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
}
seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;

2
drivers/net/wireless/ti/wl18xx/main.c
View File

@ -1374,7 +1374,7 @@ static void wl18xx_sta_rc_update(struct wl1271 *wl,
struct ieee80211_sta *sta,
u32 changed)
{
bool wide = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
bool wide = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
wl1271_debug(DEBUG_MAC80211, "mac80211 sta_rc_update wide %d", wide);

24
include/net/mac80211.h
View File

@ -1196,6 +1196,24 @@ enum ieee80211_sta_state {
IEEE80211_STA_AUTHORIZED,
};
/**
* enum ieee80211_sta_rx_bandwidth - station RX bandwidth
* @IEEE80211_STA_RX_BW_20: station can only receive 20 MHz
* @IEEE80211_STA_RX_BW_40: station can receive up to 40 MHz
* @IEEE80211_STA_RX_BW_80: station can receive up to 80 MHz
* @IEEE80211_STA_RX_BW_160: station can receive up to 160 MHz
* (including 80+80 MHz)
*
* Implementation note: 20 must be zero to be initialized
* correctly, the values must be sorted.
*/
enum ieee80211_sta_rx_bandwidth {
IEEE80211_STA_RX_BW_20 = 0,
IEEE80211_STA_RX_BW_40,
IEEE80211_STA_RX_BW_80,
IEEE80211_STA_RX_BW_160,
};
/**
* struct ieee80211_sta - station table entry
*
@ -1218,6 +1236,7 @@ enum ieee80211_sta_state {
* @uapsd_queues: bitmap of queues configured for uapsd. Only valid
* if wme is supported.
* @max_sp: max Service Period. Only valid if wme is supported.
* @bandwidth: current bandwidth the station can receive with
*/
struct ieee80211_sta {
u32 supp_rates[IEEE80211_NUM_BANDS];
@ -1228,6 +1247,7 @@ struct ieee80211_sta {
bool wme;
u8 uapsd_queues;
u8 max_sp;
enum ieee80211_sta_rx_bandwidth bandwidth;
/* must be last */
u8 drv_priv[0] __aligned(sizeof(void *));
@ -2086,7 +2106,9 @@ enum ieee80211_frame_release_type {
* enum ieee80211_rate_control_changed - flags to indicate what changed
*
* @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit
* to this station changed.
* to this station changed. The actual bandwidth is in the station
* information -- for HT20/40 the IEEE80211_HT_CAP_SUP_WIDTH_20_40
* flag changes, for HT and VHT the bandwidth field changes.
* @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed.
* @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer
* changed (in IBSS mode) due to discovering more information about

3
net/mac80211/cfg.c
View File

@ -1252,8 +1252,7 @@ static int sta_apply_parameters(struct ieee80211_local *local,
if (params->ht_capa)
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
params->ht_capa,
&sta->sta.ht_cap);
params->ht_capa, sta);
if (params->vht_capa)
ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,

82
net/mac80211/ht.c
View File

@ -37,6 +37,9 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
u8 *smask = (u8 *)(&sdata->u.mgd.ht_capa_mask.mcs.rx_mask);
int i;
if (!ht_cap->ht_supported)
return;
if (sdata->vif.type != NL80211_IFTYPE_STATION) {
/* AP interfaces call this code when adding new stations,
* so just silently ignore non station interfaces.
@ -89,22 +92,23 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
}
void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_sta_ht_cap *ht_cap)
struct sta_info *sta)
{
struct ieee80211_sta_ht_cap ht_cap;
u8 ampdu_info, tx_mcs_set_cap;
int i, max_tx_streams;
bool changed;
enum ieee80211_sta_rx_bandwidth bw;
BUG_ON(!ht_cap);
memset(ht_cap, 0, sizeof(*ht_cap));
memset(&ht_cap, 0, sizeof(ht_cap));
if (!ht_cap_ie || !sband->ht_cap.ht_supported)
return;
goto apply;
ht_cap->ht_supported = true;
ht_cap.ht_supported = true;
/*
* The bits listed in this expression should be
@ -112,7 +116,7 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
* advertises more then we can't use those thus
* we mask them out.
*/
ht_cap->cap = le16_to_cpu(ht_cap_ie->cap_info) &
ht_cap.cap = le16_to_cpu(ht_cap_ie->cap_info) &
(sband->ht_cap.cap |
~(IEEE80211_HT_CAP_LDPC_CODING |
IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
@ -121,44 +125,30 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40));
/* Unset 40 MHz if we're not using a 40 MHz channel */
switch (sdata->vif.bss_conf.chandef.width) {
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
ht_cap->cap &= ~IEEE80211_HT_CAP_SGI_40;
ht_cap->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
break;
case NL80211_CHAN_WIDTH_40:
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
break;
}
/*
* The STBC bits are asymmetric -- if we don't have
* TX then mask out the peer's RX and vice versa.
*/
if (!(sband->ht_cap.cap & IEEE80211_HT_CAP_TX_STBC))
ht_cap->cap &= ~IEEE80211_HT_CAP_RX_STBC;
ht_cap.cap &= ~IEEE80211_HT_CAP_RX_STBC;
if (!(sband->ht_cap.cap & IEEE80211_HT_CAP_RX_STBC))
ht_cap->cap &= ~IEEE80211_HT_CAP_TX_STBC;
ht_cap.cap &= ~IEEE80211_HT_CAP_TX_STBC;
ampdu_info = ht_cap_ie->ampdu_params_info;
ht_cap->ampdu_factor =
ht_cap.ampdu_factor =
ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR;
ht_cap->ampdu_density =
ht_cap.ampdu_density =
(ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2;
/* own MCS TX capabilities */
tx_mcs_set_cap = sband->ht_cap.mcs.tx_params;
/* Copy peer MCS TX capabilities, the driver might need them. */
ht_cap->mcs.tx_params = ht_cap_ie->mcs.tx_params;
ht_cap.mcs.tx_params = ht_cap_ie->mcs.tx_params;
/* can we TX with MCS rates? */
if (!(tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED))
return;
goto apply;
/* Counting from 0, therefore +1 */
if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF)
@ -176,25 +166,53 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
* - remainder are multiple spatial streams using unequal modulation
*/
for (i = 0; i < max_tx_streams; i++)
ht_cap->mcs.rx_mask[i] =
ht_cap.mcs.rx_mask[i] =
sband->ht_cap.mcs.rx_mask[i] & ht_cap_ie->mcs.rx_mask[i];
if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION)
for (i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE;
i < IEEE80211_HT_MCS_MASK_LEN; i++)
ht_cap->mcs.rx_mask[i] =
ht_cap.mcs.rx_mask[i] =
sband->ht_cap.mcs.rx_mask[i] &
ht_cap_ie->mcs.rx_mask[i];
/* handle MCS rate 32 too */
if (sband->ht_cap.mcs.rx_mask[32/8] & ht_cap_ie->mcs.rx_mask[32/8] & 1)
ht_cap->mcs.rx_mask[32/8] |= 1;
ht_cap.mcs.rx_mask[32/8] |= 1;
apply:
/*
* If user has specified capability over-rides, take care
* of that here.
*/
ieee80211_apply_htcap_overrides(sdata, ht_cap);
ieee80211_apply_htcap_overrides(sdata, &ht_cap);
changed = memcmp(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap));
memcpy(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap));
switch (sdata->vif.bss_conf.chandef.width) {
default:
WARN_ON_ONCE(1);
/* fall through */
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
bw = IEEE80211_STA_RX_BW_20;
break;
case NL80211_CHAN_WIDTH_40:
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
bw = ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20;
break;
}
if (bw != sta->sta.bandwidth)
changed = true;
sta->sta.bandwidth = bw;
return changed;
}
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,

21
net/mac80211/ibss.c
View File

@ -496,33 +496,26 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
if (sta && elems->ht_operation && elems->ht_cap_elem &&
sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) {
/* we both use HT */
struct ieee80211_sta_ht_cap sta_ht_cap_new;
struct ieee80211_ht_cap htcap_ie;
struct cfg80211_chan_def chandef;
ieee80211_ht_oper_to_chandef(channel,
elems->ht_operation,
&chandef);
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
elems->ht_cap_elem,
&sta_ht_cap_new);
memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie));
/*
* fall back to HT20 if we don't use or use
* the other extension channel
*/
if (chandef.width != NL80211_CHAN_WIDTH_40 ||
cfg80211_get_chandef_type(&chandef) !=
if (cfg80211_get_chandef_type(&chandef) !=
sdata->u.ibss.channel_type)
sta_ht_cap_new.cap &=
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
htcap_ie.cap_info &=
cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
if (memcmp(&sta->sta.ht_cap, &sta_ht_cap_new,
sizeof(sta_ht_cap_new))) {
memcpy(&sta->sta.ht_cap, &sta_ht_cap_new,
sizeof(sta_ht_cap_new));
rates_updated = true;
}
rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(
sdata, sband, &htcap_ie, sta);
}
if (sta && rates_updated) {

5
net/mac80211/ieee80211_i.h
View File

@ -1384,10 +1384,10 @@ void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
/* HT */
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_ht_cap *ht_cap);
void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_sta_ht_cap *ht_cap);
struct sta_info *sta);
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
const u8 *da, u16 tid,
u16 initiator, u16 reason_code);
@ -1431,6 +1431,7 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
struct ieee80211_vht_cap *vht_cap_ie,
struct sta_info *sta);
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,

6
net/mac80211/mesh_plink.c
View File

@ -373,8 +373,7 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata,
if (elems->ht_cap_elem &&
sdata->vif.bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
elems->ht_cap_elem,
&sta->sta.ht_cap);
elems->ht_cap_elem, sta);
else
memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
@ -383,8 +382,7 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata,
if (!(elems->ht_operation->ht_param &
IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
sta->sta.ht_cap.cap &=
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sta->sta.bandwidth = IEEE80211_STA_RX_BW_20;
ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan,
elems->ht_operation, &chandef);
if (sta->ch_width != chandef.width)

22
net/mac80211/mlme.c
View File

@ -219,19 +219,20 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, bssid);
WARN_ON_ONCE(!sta);
if (WARN_ON_ONCE(!sta)) {
mutex_unlock(&local->sta_mtx);
return changed;
}
if (sta && !sta->supports_40mhz)
if (!(sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
disable_40 = true;
if (sta && (!reconfig ||
(disable_40 != !(sta->sta.ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40)))) {
if (!reconfig ||
disable_40 != (sta->sta.bandwidth < IEEE80211_STA_RX_BW_40)) {
if (disable_40)
sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sta->sta.bandwidth = IEEE80211_STA_RX_BW_20;
else
sta->sta.ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_BW_CHANGED);
@ -2210,10 +2211,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
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;
elems.ht_cap_elem, sta);
if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,

19
net/mac80211/rc80211_minstrel_ht.c
View File

@ -848,8 +848,6 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
IEEE80211_HT_CAP_SM_PS_SHIFT;
for (i = 0; i < ARRAY_SIZE(mi->groups); i++) {
u16 req = 0;
mi->groups[i].supported = 0;
if (i == MINSTREL_CCK_GROUP) {
minstrel_ht_update_cck(mp, mi, sband, sta);
@ -857,16 +855,17 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
}
if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI) {
if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
req |= IEEE80211_HT_CAP_SGI_40;
else
req |= IEEE80211_HT_CAP_SGI_20;
if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
if (!(sta_cap & IEEE80211_HT_CAP_SGI_40))
continue;
} else {
if (!(sta_cap & IEEE80211_HT_CAP_SGI_20))
continue;
}
}
if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
req |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
if ((sta_cap & req) != req)
if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH &&
sta->bandwidth < IEEE80211_STA_RX_BW_40)
continue;
/* Mark MCS > 7 as unsupported if STA is in static SMPS mode */

23
net/mac80211/rx.c
View File

@ -2410,25 +2410,20 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
case WLAN_HT_ACTION_NOTIFY_CHANWIDTH: {
struct ieee80211_supported_band *sband;
u8 chanwidth = mgmt->u.action.u.ht_notify_cw.chanwidth;
bool old_40mhz, new_40mhz;
enum ieee80211_sta_rx_bandwidth new_bw;
/* If it doesn't support 40 MHz it can't change ... */
if (!rx->sta->supports_40mhz)
if (!(rx->sta->sta.ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40))
goto handled;
old_40mhz = rx->sta->sta.ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
new_40mhz = chanwidth == IEEE80211_HT_CHANWIDTH_ANY;
if (old_40mhz == new_40mhz)
goto handled;
if (new_40mhz)
rx->sta->sta.ht_cap.cap |=
IEEE80211_HT_CAP_SUP_WIDTH_20_40;
if (chanwidth == IEEE80211_HT_CHANWIDTH_20MHZ)
new_bw = IEEE80211_STA_RX_BW_20;
else
rx->sta->sta.ht_cap.cap &=
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
new_bw = ieee80211_sta_cur_vht_bw(rx->sta);
if (rx->sta->sta.bandwidth == new_bw)
goto handled;
sband = rx->local->hw.wiphy->bands[status->band];

4
net/mac80211/sta_info.h
View File

@ -296,8 +296,6 @@ struct sta_ampdu_mlme {
* @sta: station information we share with the driver
* @sta_state: duplicates information about station state (for debug)
* @beacon_loss_count: number of times beacon loss has triggered
* @supports_40mhz: tracks whether the station advertised 40 MHz support
* as we overwrite its HT parameters with the currently used value
* @rcu_head: RCU head used for freeing this station struct
*/
struct sta_info {
@ -403,8 +401,6 @@ struct sta_info {
unsigned int lost_packets;
unsigned int beacon_loss_count;
bool supports_40mhz;
/* keep last! */
struct ieee80211_sta sta;
};

39
net/mac80211/vht.c
View File

@ -27,6 +27,10 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
if (!vht_cap_ie || !sband->vht_cap.vht_supported)
return;
/* A VHT STA must support 40 MHz */
if (!(sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
return;
vht_cap->vht_supported = true;
vht_cap->cap = le32_to_cpu(vht_cap_ie->vht_cap_info);
@ -34,4 +38,39 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
/* Copy peer MCS info, the driver might need them. */
memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs,
sizeof(struct ieee80211_vht_mcs_info));
sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
}
enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
u32 cap = sta->sta.vht_cap.cap;
if (!sta->sta.vht_cap.vht_supported)
return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20;
/* TODO: handle VHT opmode notification data */
switch (sdata->vif.bss_conf.chandef.width) {
default:
WARN_ON_ONCE(1);
/* fall through */
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20;
case NL80211_CHAN_WIDTH_160:
if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
return IEEE80211_STA_RX_BW_160;
/* fall through */
case NL80211_CHAN_WIDTH_80P80:
if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
return IEEE80211_STA_RX_BW_160;
/* fall through */
case NL80211_CHAN_WIDTH_80:
return IEEE80211_STA_RX_BW_80;
}
}