forked from luck/tmp_suning_uos_patched
mac80211: track and tell driver about GO client P2P PS abilities
Legacy clients don't support P2P power save mechanism, and thus if a P2P GO has a legacy client connected to it, it should disable P2P PS mechanisms. Let the driver know about this with a new bss_conf parameter. Signed-off-by: Ayala Beker <ayala.beker@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -291,7 +291,7 @@ struct ieee80211_vif_chanctx_switch {
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* @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
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* @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
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* @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
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* changed (currently only in P2P client mode, GO mode will be later)
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* changed
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* @BSS_CHANGED_BEACON_INFO: Data from the AP's beacon became available:
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* currently dtim_period only is under consideration.
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* @BSS_CHANGED_BANDWIDTH: The bandwidth used by this interface changed,
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@ -526,6 +526,9 @@ struct ieee80211_mu_group_data {
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* userspace), whereas TPC is disabled if %txpower_type is set to
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* NL80211_TX_POWER_FIXED (use value configured from userspace)
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* @p2p_noa_attr: P2P NoA attribute for P2P powersave
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* @allow_p2p_go_ps: indication for AP or P2P GO interface, whether it's allowed
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* to use P2P PS mechanism or not. AP/P2P GO is not allowed to use P2P PS
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* if it has associated clients without P2P PS support.
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*/
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struct ieee80211_bss_conf {
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const u8 *bssid;
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@ -563,6 +566,7 @@ struct ieee80211_bss_conf {
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int txpower;
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enum nl80211_tx_power_setting txpower_type;
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struct ieee80211_p2p_noa_attr p2p_noa_attr;
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bool allow_p2p_go_ps;
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};
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/**
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@ -1741,6 +1745,7 @@ struct ieee80211_sta_rates {
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* size is min(max_amsdu_len, 7935) bytes.
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* Both additional HT limits must be enforced by the low level driver.
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* This is defined by the spec (IEEE 802.11-2012 section 8.3.2.2 NOTE 2).
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* @support_p2p_ps: indicates whether the STA supports P2P PS mechanism or not.
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* @txq: per-TID data TX queues (if driver uses the TXQ abstraction)
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*/
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struct ieee80211_sta {
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@ -1761,6 +1766,7 @@ struct ieee80211_sta {
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bool mfp;
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u8 max_amsdu_subframes;
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u16 max_amsdu_len;
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bool support_p2p_ps;
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struct ieee80211_txq *txq[IEEE80211_NUM_TIDS];
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@ -732,6 +732,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
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sdata->vif.bss_conf.beacon_int = params->beacon_interval;
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sdata->vif.bss_conf.dtim_period = params->dtim_period;
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sdata->vif.bss_conf.enable_beacon = true;
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sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
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sdata->vif.bss_conf.ssid_len = params->ssid_len;
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if (params->ssid_len)
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@ -1202,6 +1203,9 @@ static int sta_apply_parameters(struct ieee80211_local *local,
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params->opmode_notif, band);
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}
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if (params->support_p2p_ps >= 0)
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sta->sta.support_p2p_ps = params->support_p2p_ps;
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if (ieee80211_vif_is_mesh(&sdata->vif))
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sta_apply_mesh_params(local, sta, params);
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@ -1767,6 +1767,31 @@ void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta,
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}
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EXPORT_SYMBOL(ieee80211_sta_set_buffered);
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static void
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ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata)
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{
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struct ieee80211_local *local = sdata->local;
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bool allow_p2p_go_ps = sdata->vif.p2p;
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struct sta_info *sta;
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rcu_read_lock();
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list_for_each_entry_rcu(sta, &local->sta_list, list) {
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if (sdata != sta->sdata ||
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!test_sta_flag(sta, WLAN_STA_ASSOC))
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continue;
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if (!sta->sta.support_p2p_ps) {
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allow_p2p_go_ps = false;
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break;
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}
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}
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rcu_read_unlock();
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if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) {
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sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps;
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ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS);
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}
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}
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int sta_info_move_state(struct sta_info *sta,
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enum ieee80211_sta_state new_state)
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{
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@ -1828,12 +1853,16 @@ int sta_info_move_state(struct sta_info *sta,
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} else if (sta->sta_state == IEEE80211_STA_ASSOC) {
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clear_bit(WLAN_STA_ASSOC, &sta->_flags);
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ieee80211_recalc_min_chandef(sta->sdata);
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if (!sta->sta.support_p2p_ps)
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ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
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}
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break;
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case IEEE80211_STA_ASSOC:
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if (sta->sta_state == IEEE80211_STA_AUTH) {
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set_bit(WLAN_STA_ASSOC, &sta->_flags);
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ieee80211_recalc_min_chandef(sta->sdata);
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if (!sta->sta.support_p2p_ps)
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ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
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} else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) {
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if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
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(sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
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