From: Johannes Berg <johannes.berg@xxxxxxxxx> Handle the operating mode notification action frame. When the supported streams or the bandwidth change let the driver and rate control algorithm know. Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> --- include/net/mac80211.h | 3 ++ net/mac80211/ieee80211_i.h | 3 ++ net/mac80211/rx.c | 30 +++++++++++++++++ net/mac80211/sta_info.h | 4 +++ net/mac80211/vht.c | 82 ++++++++++++++++++++++++++++++++++++++++------ 5 files changed, 112 insertions(+), 10 deletions(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 972253a..a3a0bdf 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2107,11 +2107,14 @@ enum ieee80211_frame_release_type { * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer * changed (in IBSS mode) due to discovering more information about * the peer. + * @IEEE80211_RC_NSS_CHANGED: N_SS (number of spatial streams) was changed + * by the peer */ enum ieee80211_rate_control_changed { IEEE80211_RC_BW_CHANGED = BIT(0), IEEE80211_RC_SMPS_CHANGED = BIT(1), IEEE80211_RC_SUPP_RATES_CHANGED = BIT(2), + IEEE80211_RC_NSS_CHANGED = BIT(3), }; /** diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 2a8f651..78b27e0 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1429,6 +1429,9 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 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); +void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, u8 opmode, + enum ieee80211_band band); /* Spectrum management */ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index e0b0e0d..bef2a58 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2428,6 +2428,36 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) } break; + case WLAN_CATEGORY_VHT: + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT && + sdata->vif.type != NL80211_IFTYPE_AP_VLAN && + sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_ADHOC) + break; + + /* verify action code is present */ + if (len < IEEE80211_MIN_ACTION_SIZE + 1) + goto invalid; + + switch (mgmt->u.action.u.vht_opmode_notif.action_code) { + case WLAN_VHT_ACTION_OPMODE_NOTIF: { + u8 opmode; + + /* verify opmode is present */ + if (len < IEEE80211_MIN_ACTION_SIZE + 2) + goto invalid; + + opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; + + ieee80211_vht_handle_opmode(rx->sdata, rx->sta, + opmode, status->band); + goto handled; + } + default: + break; + } + break; case WLAN_CATEGORY_BACK: if (sdata->vif.type != NL80211_IFTYPE_STATION && sdata->vif.type != NL80211_IFTYPE_MESH_POINT && diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 03c42f8..f6760e9 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -297,6 +297,8 @@ struct sta_ampdu_mlme { * @sta_state: duplicates information about station state (for debug) * @beacon_loss_count: number of times beacon loss has triggered * @rcu_head: RCU head used for freeing this station struct + * @vht_opmode_bandwidth: max bandwidth as advertised by the last + * VHT operating mode notification */ struct sta_info { /* General information, mostly static */ @@ -398,6 +400,8 @@ struct sta_info { } debugfs; #endif + enum ieee80211_sta_rx_bandwidth vht_opmode_bandwidth; + unsigned int lost_packets; unsigned int beacon_loss_count; diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c index 67436e3..a7d0d6d 100644 --- a/net/mac80211/vht.c +++ b/net/mac80211/vht.c @@ -10,6 +10,7 @@ #include <linux/export.h> #include <net/mac80211.h> #include "ieee80211_i.h" +#include "rate.h" void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, @@ -39,6 +40,7 @@ void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs, sizeof(struct ieee80211_vht_mcs_info)); + sta->vht_opmode_bandwidth = IEEE80211_STA_RX_BW_160; sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); } @@ -46,12 +48,13 @@ 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; + enum ieee80211_sta_rx_bandwidth bw; - if (!sta->sta.vht_cap.vht_supported) - return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? + if (!sta->sta.vht_cap.vht_supported) { + bw = 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 */ + goto check_opmode; + } switch (sdata->vif.bss_conf.chandef.width) { default: @@ -60,19 +63,29 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) 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 ? + bw = sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; + break; case NL80211_CHAN_WIDTH_160: - if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ) - return IEEE80211_STA_RX_BW_160; + if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ) { + bw = IEEE80211_STA_RX_BW_160; + break; + } /* fall through */ case NL80211_CHAN_WIDTH_80P80: - if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) - return IEEE80211_STA_RX_BW_160; + if (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) { + bw = IEEE80211_STA_RX_BW_160; + break; + } /* fall through */ case NL80211_CHAN_WIDTH_80: - return IEEE80211_STA_RX_BW_80; + bw = IEEE80211_STA_RX_BW_80; } + + check_opmode: + if (bw > sta->vht_opmode_bandwidth) + bw = sta->vht_opmode_bandwidth; + return bw; } void ieee80211_sta_set_rx_nss(struct sta_info *sta) @@ -115,3 +128,52 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta) ht_rx_nss = max(ht_rx_nss, vht_rx_nss); sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss); } + +void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, u8 opmode, + enum ieee80211_band band) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_supported_band *sband; + enum ieee80211_sta_rx_bandwidth new_bw; + u32 changed = 0; + u8 nss; + + sband = local->hw.wiphy->bands[band]; + + /* ignore - no support for BF yet */ + if (opmode & IEEE80211_VHT_OPMODE_RX_NSS_TYPE_BF) + return; + + nss = opmode & IEEE80211_VHT_OPMODE_RX_NSS_MASK; + nss >>= IEEE80211_VHT_OPMODE_RX_NSS_SHIFT; + + if (sta->sta.rx_nss != nss) { + sta->sta.rx_nss = nss; + changed |= IEEE80211_RC_NSS_CHANGED; + } + + switch (opmode & IEEE80211_VHT_OPMODE_CHANWIDTH_MASK) { + case IEEE80211_VHT_OPMODE_CHANWIDTH_20MHZ: + sta->vht_opmode_bandwidth = IEEE80211_STA_RX_BW_20; + break; + case IEEE80211_VHT_OPMODE_CHANWIDTH_40MHZ: + sta->vht_opmode_bandwidth = IEEE80211_STA_RX_BW_40; + break; + case IEEE80211_VHT_OPMODE_CHANWIDTH_80MHZ: + sta->vht_opmode_bandwidth = IEEE80211_STA_RX_BW_80; + break; + case IEEE80211_VHT_OPMODE_CHANWIDTH_160MHZ: + sta->vht_opmode_bandwidth = IEEE80211_STA_RX_BW_160; + break; + } + + new_bw = ieee80211_sta_cur_vht_bw(sta); + if (new_bw != sta->sta.bandwidth) { + sta->sta.bandwidth = new_bw; + changed |= IEEE80211_RC_NSS_CHANGED; + } + + if (changed) + rate_control_rate_update(local, sband, sta, changed); +} -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html