diff options
Diffstat (limited to 'net/mac80211/vht.c')
| -rw-r--r-- | net/mac80211/vht.c | 58 |
1 files changed, 55 insertions, 3 deletions
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c index ccdcb9ad9ac7..632f07401850 100644 --- a/net/mac80211/vht.c +++ b/net/mac80211/vht.c @@ -333,11 +333,33 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, } } +/* FIXME: move this to some better location - parses HE now */ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta) { struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap; + struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; u32 cap_width; + if (he_cap->has_he) { + u8 info = he_cap->he_cap_elem.phy_cap_info[0]; + + if (sta->sdata->vif.bss_conf.chandef.chan->band == + NL80211_BAND_2GHZ) { + if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G) + return IEEE80211_STA_RX_BW_40; + else + return IEEE80211_STA_RX_BW_20; + } + + if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G || + info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) + return IEEE80211_STA_RX_BW_160; + else if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G) + return IEEE80211_STA_RX_BW_80; + + return IEEE80211_STA_RX_BW_20; + } + if (!vht_cap->vht_supported) return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? IEEE80211_STA_RX_BW_40 : @@ -433,6 +455,7 @@ ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width) } } +/* FIXME: rename/move - this deals with everything not just VHT */ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) { struct ieee80211_sub_if_data *sdata = sta->sdata; @@ -458,12 +481,40 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) void ieee80211_sta_set_rx_nss(struct sta_info *sta) { - u8 ht_rx_nss = 0, vht_rx_nss = 0; + u8 ht_rx_nss = 0, vht_rx_nss = 0, he_rx_nss = 0, rx_nss; /* if we received a notification already don't overwrite it */ if (sta->sta.rx_nss) return; + if (sta->sta.he_cap.has_he) { + int i; + u8 rx_mcs_80 = 0, rx_mcs_160 = 0; + const struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; + u16 mcs_160_map = + le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160); + u16 mcs_80_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80); + + for (i = 7; i >= 0; i--) { + u8 mcs_160 = (mcs_160_map >> (2 * i)) & 3; + + if (mcs_160 != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + rx_mcs_160 = i + 1; + break; + } + } + for (i = 7; i >= 0; i--) { + u8 mcs_80 = (mcs_80_map >> (2 * i)) & 3; + + if (mcs_80 != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + rx_mcs_80 = i + 1; + break; + } + } + + he_rx_nss = min(rx_mcs_80, rx_mcs_160); + } + if (sta->sta.ht_cap.ht_supported) { if (sta->sta.ht_cap.mcs.rx_mask[0]) ht_rx_nss++; @@ -493,8 +544,9 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta) /* 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); + rx_nss = max(vht_rx_nss, ht_rx_nss); + rx_nss = max(he_rx_nss, rx_nss); + sta->sta.rx_nss = max_t(u8, 1, rx_nss); } u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, |