Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[firefly-linux-kernel-4.4.55.git] / net / mac80211 / cfg.c
index 7371f676cf412e54481751d36bf757f42dfa5134..76690020d605ae5bbdd6cea45fe51af48040da0a 100644 (file)
@@ -372,10 +372,11 @@ static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 
 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 {
+       enum ieee80211_band band = ieee80211_get_sdata_band(sta->sdata);
+
        if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
                struct ieee80211_supported_band *sband;
-               sband = sta->local->hw.wiphy->bands[
-                               sta->local->oper_channel->band];
+               sband = sta->local->hw.wiphy->bands[band];
                rate->legacy = sband->bitrates[idx].bitrate;
        } else
                rate->mcs = idx;
@@ -532,6 +533,8 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
                                   u64 *data)
 {
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct ieee80211_chanctx_conf *chanctx_conf;
+       struct ieee80211_channel *channel;
        struct sta_info *sta;
        struct ieee80211_local *local = sdata->local;
        struct station_info sinfo;
@@ -607,19 +610,26 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
 do_survey:
        i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
        /* Get survey stats for current channel */
-       q = 0;
-       while (true) {
-               survey.filled = 0;
-               if (drv_get_survey(local, q, &survey) != 0) {
-                       survey.filled = 0;
-                       break;
-               }
+       survey.filled = 0;
 
-               if (survey.channel &&
-                   (local->oper_channel->center_freq ==
-                    survey.channel->center_freq))
-                       break;
-               q++;
+       rcu_read_lock();
+       chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+       if (chanctx_conf)
+               channel = chanctx_conf->channel;
+       else
+               channel = NULL;
+       rcu_read_unlock();
+
+       if (channel) {
+               q = 0;
+               do {
+                       survey.filled = 0;
+                       if (drv_get_survey(local, q, &survey) != 0) {
+                               survey.filled = 0;
+                               break;
+                       }
+                       q++;
+               } while (channel != survey.channel);
        }
 
        if (survey.filled)
@@ -724,47 +734,42 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
        return ret;
 }
 
-static int ieee80211_set_channel(struct wiphy *wiphy,
-                                struct net_device *netdev,
-                                struct ieee80211_channel *chan,
-                                enum nl80211_channel_type channel_type)
+static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
+                                        struct ieee80211_channel *chan,
+                                        enum nl80211_channel_type channel_type)
 {
        struct ieee80211_local *local = wiphy_priv(wiphy);
-       struct ieee80211_sub_if_data *sdata = NULL;
-
-       if (netdev)
-               sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
-
-       switch (ieee80211_get_channel_mode(local, NULL)) {
-       case CHAN_MODE_HOPPING:
-               return -EBUSY;
-       case CHAN_MODE_FIXED:
-               if (local->oper_channel != chan ||
-                   (!sdata && local->_oper_channel_type != channel_type))
-                       return -EBUSY;
-               if (!sdata && local->_oper_channel_type == channel_type)
-                       return 0;
-               break;
-       case CHAN_MODE_UNDEFINED:
-               break;
-       }
-
-       if (!ieee80211_set_channel_type(local, sdata, channel_type))
-               return -EBUSY;
+       struct ieee80211_sub_if_data *sdata;
+       int ret = 0;
 
-       local->oper_channel = chan;
+       if (local->monitor_channel == chan &&
+           local->monitor_channel_type == channel_type)
+               return 0;
 
-       /* auto-detects changes */
-       ieee80211_hw_config(local, 0);
+       mutex_lock(&local->iflist_mtx);
+       if (local->use_chanctx) {
+               sdata = rcu_dereference_protected(
+                               local->monitor_sdata,
+                               lockdep_is_held(&local->iflist_mtx));
+               if (sdata) {
+                       ieee80211_vif_release_channel(sdata);
+                       ret = ieee80211_vif_use_channel(
+                                       sdata, chan, channel_type,
+                                       IEEE80211_CHANCTX_EXCLUSIVE);
+               }
+       } else if (local->open_count == local->monitors) {
+               local->_oper_channel = chan;
+               local->_oper_channel_type = channel_type;
+               ieee80211_hw_config(local, 0);
+       }
 
-       return 0;
-}
+       if (ret == 0) {
+               local->monitor_channel = chan;
+               local->monitor_channel_type = channel_type;
+       }
+       mutex_unlock(&local->iflist_mtx);
 
-static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
-                                        struct ieee80211_channel *chan,
-                                        enum nl80211_channel_type channel_type)
-{
-       return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
+       return ret;
 }
 
 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
@@ -879,8 +884,13 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
        if (old)
                return -EALREADY;
 
-       err = ieee80211_set_channel(wiphy, dev, params->channel,
-                                   params->channel_type);
+       /* TODO: make hostapd tell us what it wants */
+       sdata->smps_mode = IEEE80211_SMPS_OFF;
+       sdata->needed_rx_chains = sdata->local->rx_chains;
+
+       err = ieee80211_vif_use_channel(sdata, params->channel,
+                                       params->channel_type,
+                                       IEEE80211_CHANCTX_SHARED);
        if (err)
                return err;
 
@@ -963,6 +973,8 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
        sta_info_flush(sdata->local, sdata);
        ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 
+       ieee80211_vif_release_channel(sdata);
+
        return 0;
 }
 
@@ -1019,9 +1031,10 @@ static int sta_apply_parameters(struct ieee80211_local *local,
        int i, j;
        struct ieee80211_supported_band *sband;
        struct ieee80211_sub_if_data *sdata = sta->sdata;
+       enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
        u32 mask, set;
 
-       sband = local->hw.wiphy->bands[local->oper_channel->band];
+       sband = local->hw.wiphy->bands[band];
 
        mask = params->sta_flags_mask;
        set = params->sta_flags_set;
@@ -1136,7 +1149,7 @@ static int sta_apply_parameters(struct ieee80211_local *local,
                                        rates |= BIT(j);
                        }
                }
-               sta->sta.supp_rates[local->oper_channel->band] = rates;
+               sta->sta.supp_rates[band] = rates;
        }
 
        if (params->ht_capa)
@@ -1144,6 +1157,11 @@ static int sta_apply_parameters(struct ieee80211_local *local,
                                                  params->ht_capa,
                                                  &sta->sta.ht_cap);
 
+       if (params->vht_capa)
+               ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
+                                                   params->vht_capa,
+                                                   &sta->sta.vht_cap);
+
        if (ieee80211_vif_is_mesh(&sdata->vif)) {
 #ifdef CONFIG_MAC80211_MESH
                if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
@@ -1664,8 +1682,13 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
        if (err)
                return err;
 
-       err = ieee80211_set_channel(wiphy, dev, setup->channel,
-                                   setup->channel_type);
+       /* can mesh use other SMPS modes? */
+       sdata->smps_mode = IEEE80211_SMPS_OFF;
+       sdata->needed_rx_chains = sdata->local->rx_chains;
+
+       err = ieee80211_vif_use_channel(sdata, setup->channel,
+                                       setup->channel_type,
+                                       IEEE80211_CHANCTX_SHARED);
        if (err)
                return err;
 
@@ -1679,6 +1702,7 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
        ieee80211_stop_mesh(sdata);
+       ieee80211_vif_release_channel(sdata);
 
        return 0;
 }
@@ -1688,10 +1712,14 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                                struct net_device *dev,
                                struct bss_parameters *params)
 {
-       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       enum ieee80211_band band;
        u32 changed = 0;
 
-       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       if (!rtnl_dereference(sdata->u.ap.beacon))
+               return -ENOENT;
+
+       band = ieee80211_get_sdata_band(sdata);
 
        if (params->use_cts_prot >= 0) {
                sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
@@ -1704,7 +1732,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
        }
 
        if (!sdata->vif.bss_conf.use_short_slot &&
-           sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) {
+           band == IEEE80211_BAND_5GHZ) {
                sdata->vif.bss_conf.use_short_slot = true;
                changed |= BSS_CHANGED_ERP_SLOT;
        }
@@ -1718,9 +1746,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
        if (params->basic_rates) {
                int i, j;
                u32 rates = 0;
-               struct ieee80211_local *local = wiphy_priv(wiphy);
-               struct ieee80211_supported_band *sband =
-                       wiphy->bands[local->oper_channel->band];
+               struct ieee80211_supported_band *sband = wiphy->bands[band];
 
                for (i = 0; i < params->basic_rates_len; i++) {
                        int rate = (params->basic_rates[i] & 0x7f) * 5;
@@ -1829,7 +1855,16 @@ static int ieee80211_scan(struct wiphy *wiphy,
                 * beaconing hasn't been configured yet
                 */
        case NL80211_IFTYPE_AP:
-               if (sdata->u.ap.beacon)
+               /*
+                * If the scan has been forced (and the driver supports
+                * forcing), don't care about being beaconing already.
+                * This will create problems to the attached stations (e.g. all
+                * the  frames sent while scanning on other channel will be
+                * lost)
+                */
+               if (sdata->u.ap.beacon &&
+                   (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
+                    !(req->flags & NL80211_SCAN_FLAG_AP)))
                        return -EOPNOTSUPP;
                break;
        default:
@@ -1872,20 +1907,6 @@ static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
                           struct cfg80211_assoc_request *req)
 {
-       struct ieee80211_local *local = wiphy_priv(wiphy);
-       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
-       switch (ieee80211_get_channel_mode(local, sdata)) {
-       case CHAN_MODE_HOPPING:
-               return -EBUSY;
-       case CHAN_MODE_FIXED:
-               if (local->oper_channel == req->bss->channel)
-                       break;
-               return -EBUSY;
-       case CHAN_MODE_UNDEFINED:
-               break;
-       }
-
        return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
 }
 
@@ -1904,30 +1925,12 @@ static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
                               struct cfg80211_ibss_params *params)
 {
-       struct ieee80211_local *local = wiphy_priv(wiphy);
-       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
-       switch (ieee80211_get_channel_mode(local, sdata)) {
-       case CHAN_MODE_HOPPING:
-               return -EBUSY;
-       case CHAN_MODE_FIXED:
-               if (!params->channel_fixed)
-                       return -EBUSY;
-               if (local->oper_channel == params->channel)
-                       break;
-               return -EBUSY;
-       case CHAN_MODE_UNDEFINED:
-               break;
-       }
-
-       return ieee80211_ibss_join(sdata, params);
+       return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
 }
 
 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 {
-       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
-       return ieee80211_ibss_leave(sdata);
+       return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
 }
 
 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
@@ -1971,9 +1974,13 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy,
                                  enum nl80211_tx_power_setting type, int mbm)
 {
        struct ieee80211_local *local = wiphy_priv(wiphy);
-       struct ieee80211_channel *chan = local->oper_channel;
+       struct ieee80211_channel *chan = local->_oper_channel;
        u32 changes = 0;
 
+       /* FIXME */
+       if (local->use_chanctx)
+               return -EOPNOTSUPP;
+
        switch (type) {
        case NL80211_TX_POWER_AUTOMATIC:
                local->user_power_level = -1;
@@ -2067,13 +2074,12 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
 
        /*
         * If not associated, or current association is not an HT
-        * association, there's no need to send an action frame.
+        * association, there's no need to do anything, just store
+        * the new value until we associate.
         */
        if (!sdata->u.mgd.associated ||
-           sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
-               ieee80211_recalc_smps(sdata->local);
+           sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
                return 0;
-       }
 
        ap = sdata->u.mgd.associated->bssid;
 
@@ -2189,6 +2195,9 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local,
 
        lockdep_assert_held(&local->mtx);
 
+       if (local->use_chanctx && !local->ops->remain_on_channel)
+               return -EOPNOTSUPP;
+
        roc = kzalloc(sizeof(*roc), GFP_KERNEL);
        if (!roc)
                return -ENOMEM;
@@ -2515,10 +2524,20 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 
        /* Check if the operating channel is the requested channel */
        if (!need_offchan) {
-               need_offchan = chan != local->oper_channel;
-               if (channel_type_valid &&
-                   channel_type != local->_oper_channel_type)
+               struct ieee80211_chanctx_conf *chanctx_conf;
+
+               rcu_read_lock();
+               chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+
+               if (chanctx_conf) {
+                       need_offchan = chan != chanctx_conf->channel;
+                       if (channel_type_valid &&
+                           channel_type != chanctx_conf->channel_type)
+                               need_offchan = true;
+               } else {
                        need_offchan = true;
+               }
+               rcu_read_unlock();
        }
 
        if (need_offchan && !offchan) {
@@ -2670,7 +2689,7 @@ static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
        u16 capab;
 
        capab = 0;
-       if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
+       if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
                return capab;
 
        if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
@@ -2702,7 +2721,7 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
                               u16 status_code, struct sk_buff *skb)
 {
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-       struct ieee80211_local *local = sdata->local;
+       enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
        struct ieee80211_tdls_data *tf;
 
        tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
@@ -2722,10 +2741,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
                tf->u.setup_req.capability =
                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-               ieee80211_add_srates_ie(sdata, skb, false,
-                                       local->oper_channel->band);
-               ieee80211_add_ext_srates_ie(sdata, skb, false,
-                                           local->oper_channel->band);
+               ieee80211_add_srates_ie(sdata, skb, false, band);
+               ieee80211_add_ext_srates_ie(sdata, skb, false, band);
                ieee80211_tdls_add_ext_capab(skb);
                break;
        case WLAN_TDLS_SETUP_RESPONSE:
@@ -2738,10 +2755,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
                tf->u.setup_resp.capability =
                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-               ieee80211_add_srates_ie(sdata, skb, false,
-                                       local->oper_channel->band);
-               ieee80211_add_ext_srates_ie(sdata, skb, false,
-                                           local->oper_channel->band);
+               ieee80211_add_srates_ie(sdata, skb, false, band);
+               ieee80211_add_ext_srates_ie(sdata, skb, false, band);
                ieee80211_tdls_add_ext_capab(skb);
                break;
        case WLAN_TDLS_SETUP_CONFIRM:
@@ -2779,7 +2794,7 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
                           u16 status_code, struct sk_buff *skb)
 {
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-       struct ieee80211_local *local = sdata->local;
+       enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
        struct ieee80211_mgmt *mgmt;
 
        mgmt = (void *)skb_put(skb, 24);
@@ -2802,10 +2817,8 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
                mgmt->u.action.u.tdls_discover_resp.capability =
                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
 
-               ieee80211_add_srates_ie(sdata, skb, false,
-                                       local->oper_channel->band);
-               ieee80211_add_ext_srates_ie(sdata, skb, false,
-                                           local->oper_channel->band);
+               ieee80211_add_srates_ie(sdata, skb, false, band);
+               ieee80211_add_ext_srates_ie(sdata, skb, false, band);
                ieee80211_tdls_add_ext_capab(skb);
                break;
        default:
@@ -2822,7 +2835,6 @@ static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
 {
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
        struct ieee80211_local *local = sdata->local;
-       struct ieee80211_tx_info *info;
        struct sk_buff *skb = NULL;
        bool send_direct;
        int ret;
@@ -2848,7 +2860,6 @@ static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
        if (!skb)
                return -ENOMEM;
 
-       info = IEEE80211_SKB_CB(skb);
        skb_reserve(skb, local->hw.extra_tx_headroom);
 
        switch (action_code) {
@@ -2985,12 +2996,19 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
        bool qos;
        struct ieee80211_tx_info *info;
        struct sta_info *sta;
+       struct ieee80211_chanctx_conf *chanctx_conf;
+       enum ieee80211_band band;
 
        rcu_read_lock();
+       chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+       if (WARN_ON(!chanctx_conf)) {
+               rcu_read_unlock();
+               return -EINVAL;
+       }
+       band = chanctx_conf->channel->band;
        sta = sta_info_get(sdata, peer);
        if (sta) {
                qos = test_sta_flag(sta, WLAN_STA_WME);
-               rcu_read_unlock();
        } else {
                rcu_read_unlock();
                return -ENOLINK;
@@ -3008,8 +3026,10 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
        }
 
        skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
-       if (!skb)
+       if (!skb) {
+               rcu_read_unlock();
                return -ENOMEM;
+       }
 
        skb->dev = dev;
 
@@ -3034,8 +3054,9 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
                nullfunc->qos_ctrl = cpu_to_le16(7);
 
        local_bh_disable();
-       ieee80211_xmit(sdata, skb);
+       ieee80211_xmit(sdata, skb, band);
        local_bh_enable();
+       rcu_read_unlock();
 
        *cookie = (unsigned long) skb;
        return 0;
@@ -3045,10 +3066,19 @@ static struct ieee80211_channel *
 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
                          enum nl80211_channel_type *type)
 {
-       struct ieee80211_local *local = wiphy_priv(wiphy);
+       struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+       struct ieee80211_chanctx_conf *chanctx_conf;
+       struct ieee80211_channel *chan = NULL;
+
+       rcu_read_lock();
+       chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+       if (chanctx_conf) {
+               *type = chanctx_conf->channel_type;
+               chan = chanctx_conf->channel;
+       }
+       rcu_read_unlock();
 
-       *type = local->_oper_channel_type;
-       return local->oper_channel;
+       return chan;
 }
 
 #ifdef CONFIG_PM