diff options
| -rw-r--r-- | include/net/mac80211.h | 5 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 1 | ||||
| -rw-r--r-- | net/mac80211/rate.h | 2 | ||||
| -rw-r--r-- | net/mac80211/vht.c | 41 |
4 files changed, 49 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 1e3b4f730397..a608ab9879b4 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1237,6 +1237,10 @@ enum ieee80211_sta_rx_bandwidth { * if wme is supported. * @max_sp: max Service Period. Only valid if wme is supported. * @bandwidth: current bandwidth the station can receive with + * @rx_nss: in HT/VHT, the maximum number of spatial streams the + * station can receive at the moment, changed by operating mode + * notifications and capabilities. The value is only valid after + * the station moves to associated state. */ struct ieee80211_sta { u32 supp_rates[IEEE80211_NUM_BANDS]; @@ -1247,6 +1251,7 @@ struct ieee80211_sta { bool wme; u8 uapsd_queues; u8 max_sp; + u8 rx_nss; enum ieee80211_sta_rx_bandwidth bandwidth; /* must be last */ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 6b41d7787a5a..3b13af4e6c49 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1432,6 +1432,7 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 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); +void ieee80211_sta_set_rx_nss(struct sta_info *sta); /* Spectrum management */ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h index 301386dabf88..d35a5dd3fb13 100644 --- a/net/mac80211/rate.h +++ b/net/mac80211/rate.h @@ -68,6 +68,8 @@ static inline void rate_control_rate_init(struct sta_info *sta) sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band]; rcu_read_unlock(); + ieee80211_sta_set_rx_nss(sta); + ref->ops->rate_init(ref->priv, sband, ista, priv_sta); set_sta_flag(sta, WLAN_STA_RATE_CONTROL); } diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c index 0fc9a2fb8d53..67436e3efbbd 100644 --- a/net/mac80211/vht.c +++ b/net/mac80211/vht.c @@ -74,3 +74,44 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) return IEEE80211_STA_RX_BW_80; } } + +void ieee80211_sta_set_rx_nss(struct sta_info *sta) +{ + u8 ht_rx_nss = 0, vht_rx_nss = 0; + + /* if we received a notification already don't overwrite it */ + if (sta->sta.rx_nss) + return; + + if (sta->sta.ht_cap.ht_supported) { + if (sta->sta.ht_cap.mcs.rx_mask[0]) + ht_rx_nss++; + if (sta->sta.ht_cap.mcs.rx_mask[1]) + ht_rx_nss++; + if (sta->sta.ht_cap.mcs.rx_mask[2]) + ht_rx_nss++; + if (sta->sta.ht_cap.mcs.rx_mask[3]) + ht_rx_nss++; + /* FIXME: consider rx_highest? */ + } + + if (sta->sta.vht_cap.vht_supported) { + int i; + u16 rx_mcs_map; + + rx_mcs_map = le16_to_cpu(sta->sta.vht_cap.vht_mcs.rx_mcs_map); + + for (i = 7; i >= 0; i--) { + u8 mcs = (rx_mcs_map >> (2 * i)) & 3; + + if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + vht_rx_nss = i + 1; + break; + } + } + /* FIXME: consider rx_highest? */ + } + + ht_rx_nss = max(ht_rx_nss, vht_rx_nss); + sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss); +} |