writeback: limit write_cache_pages integrity scanning to current EOF
[safe/jmp/linux-2.6] / net / mac80211 / cfg.c
index fdac1bc..c7000a6 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * mac80211 configuration hooks for cfg80211
  *
- * Copyright 2006, 2007        Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
  *
  * This file is GPLv2 as found in COPYING.
  */
@@ -9,6 +9,7 @@
 #include <linux/ieee80211.h>
 #include <linux/nl80211.h>
 #include <linux/rtnetlink.h>
+#include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <linux/rcupdate.h>
 #include <net/cfg80211.h>
@@ -96,9 +97,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
                                            params->mesh_id_len,
                                            params->mesh_id);
 
-       if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
-               return 0;
-
        if (type == NL80211_IFTYPE_AP_VLAN &&
            params && params->use_4addr == 0)
                rcu_assign_pointer(sdata->u.vlan.sta, NULL);
@@ -106,7 +104,9 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
                 params && params->use_4addr >= 0)
                sdata->u.mgd.use_4addr = params->use_4addr;
 
-       sdata->u.mntr_flags = *flags;
+       if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags)
+               sdata->u.mntr_flags = *flags;
+
        return 0;
 }
 
@@ -148,7 +148,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
        rcu_read_lock();
 
        if (mac_addr) {
-               sta = sta_info_get(sdata, mac_addr);
+               sta = sta_info_get_bss(sdata, mac_addr);
                if (!sta) {
                        ieee80211_key_free(key);
                        err = -ENOENT;
@@ -179,7 +179,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
        if (mac_addr) {
                ret = -ENOENT;
 
-               sta = sta_info_get(sdata, mac_addr);
+               sta = sta_info_get_bss(sdata, mac_addr);
                if (!sta)
                        goto out_unlock;
 
@@ -226,7 +226,7 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
        rcu_read_lock();
 
        if (mac_addr) {
-               sta = sta_info_get(sdata, mac_addr);
+               sta = sta_info_get_bss(sdata, mac_addr);
                if (!sta)
                        goto out;
 
@@ -410,6 +410,17 @@ static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
        return ret;
 }
 
+static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
+                                int idx, struct survey_info *survey)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+       if (!local->ops->get_survey)
+               return -EOPNOTSUPP;
+
+       return drv_get_survey(local, idx, survey);
+}
+
 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
                                 u8 *mac, struct station_info *sinfo)
 {
@@ -419,7 +430,7 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 
        rcu_read_lock();
 
-       sta = sta_info_get(sdata, mac);
+       sta = sta_info_get_bss(sdata, mac);
        if (sta) {
                ret = 0;
                sta_set_sinfo(sta, sinfo);
@@ -515,6 +526,8 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
                if (old)
                        memcpy(new->tail, old->tail, new_tail_len);
 
+       sdata->vif.bss_conf.dtim_period = new->dtim_period;
+
        rcu_assign_pointer(sdata->u.ap.beacon, new);
 
        synchronize_rcu();
@@ -747,9 +760,7 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
        layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
                sdata->vif.type == NL80211_IFTYPE_AP;
 
-       rcu_read_lock();
-
-       err = sta_info_insert(sta);
+       err = sta_info_insert_rcu(sta);
        if (err) {
                rcu_read_unlock();
                return err;
@@ -768,26 +779,13 @@ static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 {
        struct ieee80211_local *local = wiphy_priv(wiphy);
        struct ieee80211_sub_if_data *sdata;
-       struct sta_info *sta;
 
        sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-       if (mac) {
-               rcu_read_lock();
-
-               sta = sta_info_get(sdata, mac);
-               if (!sta) {
-                       rcu_read_unlock();
-                       return -ENOENT;
-               }
-
-               sta_info_unlink(&sta);
-               rcu_read_unlock();
-
-               sta_info_destroy(sta);
-       } else
-               sta_info_flush(local, sdata);
+       if (mac)
+               return sta_info_destroy_addr_bss(sdata, mac);
 
+       sta_info_flush(local, sdata);
        return 0;
 }
 
@@ -803,7 +801,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
 
        rcu_read_lock();
 
-       sta = sta_info_get(sdata, mac);
+       sta = sta_info_get_bss(sdata, mac);
        if (!sta) {
                rcu_read_unlock();
                return -ENOENT;
@@ -1085,6 +1083,13 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                        params->use_short_preamble;
                changed |= BSS_CHANGED_ERP_PREAMBLE;
        }
+
+       if (!sdata->vif.bss_conf.use_short_slot &&
+           sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
+               sdata->vif.bss_conf.use_short_slot = true;
+               changed |= BSS_CHANGED_ERP_SLOT;
+       }
+
        if (params->use_short_slot_time >= 0) {
                sdata->vif.bss_conf.use_short_slot =
                        params->use_short_slot_time;
@@ -1109,6 +1114,13 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
                changed |= BSS_CHANGED_BASIC_RATES;
        }
 
+       if (params->ap_isolate >= 0) {
+               if (params->ap_isolate)
+                       sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
+               else
+                       sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
+       }
+
        ieee80211_bss_info_change_notify(sdata, changed);
 
        return 0;
@@ -1128,6 +1140,13 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
        p.cw_max = params->cwmax;
        p.cw_min = params->cwmin;
        p.txop = params->txop;
+
+       /*
+        * Setting tx queue params disables u-apsd because it's only
+        * called in master mode.
+        */
+       p.uapsd = false;
+
        if (drv_conf_tx(local, params->queue, &p)) {
                printk(KERN_DEBUG "%s: failed to set TX queue "
                       "parameters for queue %d\n",
@@ -1135,19 +1154,47 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
                return -EINVAL;
        }
 
+       /* enable WMM or activate new settings */
+       local->hw.conf.flags |= IEEE80211_CONF_QOS;
+       drv_config(local, IEEE80211_CONF_CHANGE_QOS);
+
        return 0;
 }
 
 static int ieee80211_set_channel(struct wiphy *wiphy,
+                                struct net_device *netdev,
                                 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)
+                       return -EBUSY;
+               if (!sdata && local->_oper_channel_type == channel_type)
+                       return 0;
+               break;
+       case CHAN_MODE_UNDEFINED:
+               break;
+       }
 
        local->oper_channel = chan;
-       local->oper_channel_type = channel_type;
 
-       return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+       if (!ieee80211_set_channel_type(local, sdata, channel_type))
+               return -EBUSY;
+
+       ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+       if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
+               ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
+
+       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -1191,6 +1238,20 @@ 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);
 }
 
@@ -1213,8 +1274,22 @@ 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);
 }
 
@@ -1230,6 +1305,13 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
        struct ieee80211_local *local = wiphy_priv(wiphy);
        int err;
 
+       if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
+               err = drv_set_coverage_class(local, wiphy->coverage_class);
+
+               if (err)
+                       return err;
+       }
+
        if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
                err = drv_set_rts_threshold(local, wiphy->rts_threshold);
 
@@ -1336,14 +1418,14 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
         * association, there's no need to send an action frame.
         */
        if (!sdata->u.mgd.associated ||
-           sdata->local->oper_channel_type == NL80211_CHAN_NO_HT) {
+           sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
                mutex_lock(&sdata->local->iflist_mtx);
                ieee80211_recalc_smps(sdata->local, sdata);
                mutex_unlock(&sdata->local->iflist_mtx);
                return 0;
        }
 
-       ap = sdata->u.mgd.associated->cbss.bssid;
+       ap = sdata->u.mgd.associated->bssid;
 
        if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
                if (sdata->u.mgd.powersave)
@@ -1368,15 +1450,18 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
        struct ieee80211_conf *conf = &local->hw.conf;
 
+       if (sdata->vif.type != NL80211_IFTYPE_STATION)
+               return -EOPNOTSUPP;
+
        if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
                return -EOPNOTSUPP;
 
        if (enabled == sdata->u.mgd.powersave &&
-           timeout == conf->dynamic_ps_timeout)
+           timeout == conf->dynamic_ps_forced_timeout)
                return 0;
 
        sdata->u.mgd.powersave = enabled;
-       conf->dynamic_ps_timeout = timeout;
+       conf->dynamic_ps_forced_timeout = timeout;
 
        /* no change, but if automatic follow powersave */
        mutex_lock(&sdata->u.mgd.mtx);
@@ -1391,6 +1476,35 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
        return 0;
 }
 
+static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
+                                        struct net_device *dev,
+                                        s32 rssi_thold, u32 rssi_hyst)
+{
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_vif *vif = &sdata->vif;
+       struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+
+       if (rssi_thold == bss_conf->cqm_rssi_thold &&
+           rssi_hyst == bss_conf->cqm_rssi_hyst)
+               return 0;
+
+       bss_conf->cqm_rssi_thold = rssi_thold;
+       bss_conf->cqm_rssi_hyst = rssi_hyst;
+
+       if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
+               if (sdata->vif.type != NL80211_IFTYPE_STATION)
+                       return -EOPNOTSUPP;
+               return 0;
+       }
+
+       /* tell the driver upon association, unless already associated */
+       if (sdata->u.mgd.associated)
+               ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
+
+       return 0;
+}
+
 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
                                      struct net_device *dev,
                                      const u8 *addr,
@@ -1399,8 +1513,6 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
        int i;
-       u32 target_rate;
-       struct ieee80211_supported_band *sband;
 
        /*
         * This _could_ be supported by providing a hook for
@@ -1410,35 +1522,42 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
        if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
                return -EOPNOTSUPP;
 
-       sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 
-       /*
-        * target_rate = -1, rate->fixed = 0 means auto only, so use all rates
-        * target_rate = X, rate->fixed = 1 means only rate X
-        * target_rate = X, rate->fixed = 0 means all rates <= X
-        */
-       sdata->max_ratectrl_rateidx = -1;
-       sdata->force_unicast_rateidx = -1;
+       for (i = 0; i < IEEE80211_NUM_BANDS; i++)
+               sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
 
-       if (mask->fixed)
-               target_rate = mask->fixed / 100;
-       else if (mask->maxrate)
-               target_rate = mask->maxrate / 100;
-       else
-               return 0;
+       return 0;
+}
 
-       for (i = 0; i< sband->n_bitrates; i++) {
-               if (target_rate != sband->bitrates[i].bitrate)
-                       continue;
+static int ieee80211_remain_on_channel(struct wiphy *wiphy,
+                                      struct net_device *dev,
+                                      struct ieee80211_channel *chan,
+                                      enum nl80211_channel_type channel_type,
+                                      unsigned int duration,
+                                      u64 *cookie)
+{
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-               /* requested bitrate found */
-               sdata->max_ratectrl_rateidx = i;
-               if (mask->fixed)
-                       sdata->force_unicast_rateidx = i;
-               return 0;
-       }
+       return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
+                                             duration, cookie);
+}
 
-       return -EINVAL;
+static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
+                                             struct net_device *dev,
+                                             u64 cookie)
+{
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
+}
+
+static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev,
+                           struct ieee80211_channel *chan,
+                           enum nl80211_channel_type channel_type,
+                           const u8 *buf, size_t len, u64 *cookie)
+{
+       return ieee80211_mgd_action(IEEE80211_DEV_TO_SUB_IF(dev), chan,
+                                   channel_type, buf, len, cookie);
 }
 
 struct cfg80211_ops mac80211_config_ops = {
@@ -1458,6 +1577,7 @@ struct cfg80211_ops mac80211_config_ops = {
        .change_station = ieee80211_change_station,
        .get_station = ieee80211_get_station,
        .dump_station = ieee80211_dump_station,
+       .dump_survey = ieee80211_dump_survey,
 #ifdef CONFIG_MAC80211_MESH
        .add_mpath = ieee80211_add_mpath,
        .del_mpath = ieee80211_del_mpath,
@@ -1487,4 +1607,8 @@ struct cfg80211_ops mac80211_config_ops = {
        CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
        .set_power_mgmt = ieee80211_set_power_mgmt,
        .set_bitrate_mask = ieee80211_set_bitrate_mask,
+       .remain_on_channel = ieee80211_remain_on_channel,
+       .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
+       .action = ieee80211_action,
+       .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
 };