1 files changed, 503 insertions, 253 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 107a0cbe52a..d17c26d6e36 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -19,10 +19,11 @@
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
 #include <linux/bitmap.h>
-#include <linux/pm_qos_params.h>
+#include <linux/pm_qos.h>
 #include <linux/inetdevice.h>
 #include <net/net_namespace.h>
 #include <net/cfg80211.h>
+#include <net/addrconf.h>
 
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -33,12 +34,6 @@
 #include "cfg.h"
 #include "debugfs.h"
 
-
-bool ieee80211_disable_40mhz_24ghz;
-module_param(ieee80211_disable_40mhz_24ghz, bool, 0644);
-MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz,
-		 "Disable 40MHz support in the 2.4GHz band");
-
 void ieee80211_configure_filter(struct ieee80211_local *local)
 {
 	u64 mc;
@@ -51,7 +46,8 @@ void ieee80211_configure_filter(struct ieee80211_local *local)
 	if (atomic_read(&local->iff_allmultis))
 		new_flags |= FIF_ALLMULTI;
 
-	if (local->monitors || local->scanning)
+	if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
+	    test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
 		new_flags |= FIF_BCN_PRBRESP_PROMISC;
 
 	if (local->fif_probe_req || local->probe_req_reg)
@@ -96,39 +92,41 @@ static void ieee80211_reconfig_filter(struct work_struct *work)
 	ieee80211_configure_filter(local);
 }
 
-int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
+static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
 {
-	struct ieee80211_channel *chan, *scan_chan;
-	int ret = 0;
+	struct ieee80211_sub_if_data *sdata;
+	struct cfg80211_chan_def chandef = {};
+	u32 changed = 0;
 	int power;
-	enum nl80211_channel_type channel_type;
 	u32 offchannel_flag;
 
-	might_sleep();
-
-	scan_chan = local->scan_channel;
-
 	offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
-	if (scan_chan) {
-		chan = scan_chan;
-		channel_type = NL80211_CHAN_NO_HT;
-		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
-	} else if (local->tmp_channel &&
-		   local->oper_channel != local->tmp_channel) {
-		chan = scan_chan = local->tmp_channel;
-		channel_type = local->tmp_channel_type;
+
+	if (local->scan_chandef.chan) {
+		chandef = local->scan_chandef;
+	} else if (local->tmp_channel) {
+		chandef.chan = local->tmp_channel;
+		chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+		chandef.center_freq1 = chandef.chan->center_freq;
+	} else
+		chandef = local->_oper_chandef;
+
+	WARN(!cfg80211_chandef_valid(&chandef),
+	     "control:%d MHz width:%d center: %d/%d MHz",
+	     chandef.chan->center_freq, chandef.width,
+	     chandef.center_freq1, chandef.center_freq2);
+
+	if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
 		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
-	} else {
-		chan = local->oper_channel;
-		channel_type = local->_oper_channel_type;
+	else
 		local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
-	}
+
 	offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
 
-	if (offchannel_flag || chan != local->hw.conf.channel ||
-	    channel_type != local->hw.conf.channel_type) {
-		local->hw.conf.channel = chan;
-		local->hw.conf.channel_type = channel_type;
+	if (offchannel_flag ||
+	    !cfg80211_chandef_identical(&local->hw.conf.chandef,
+					&local->_oper_chandef)) {
+		local->hw.conf.chandef = chandef;
 		changed |= IEEE80211_CONF_CHANGE_CHANNEL;
 	}
 
@@ -144,21 +142,38 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 		changed |= IEEE80211_CONF_CHANGE_SMPS;
 	}
 
-	if (scan_chan)
-		power = chan->max_power;
-	else
-		power = local->power_constr_level ?
-			(chan->max_power - local->power_constr_level) :
-			chan->max_power;
+	power = ieee80211_chandef_max_power(&chandef);
 
-	if (local->user_power_level >= 0)
-		power = min(power, local->user_power_level);
+	rcu_read_lock();
+	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+		if (!rcu_access_pointer(sdata->vif.chanctx_conf))
+			continue;
+		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+			continue;
+		power = min(power, sdata->vif.bss_conf.txpower);
+	}
+	rcu_read_unlock();
 
 	if (local->hw.conf.power_level != power) {
 		changed |= IEEE80211_CONF_CHANGE_POWER;
 		local->hw.conf.power_level = power;
 	}
 
+	return changed;
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
+{
+	int ret = 0;
+
+	might_sleep();
+
+	if (!local->use_chanctx)
+		changed |= ieee80211_hw_conf_chan(local);
+	else
+		changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
+			     IEEE80211_CONF_CHANGE_POWER);
+
 	if (changed && local->open_count) {
 		ret = drv_config(local, changed);
 		/*
@@ -185,76 +200,9 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 				      u32 changed)
 {
 	struct ieee80211_local *local = sdata->local;
-	static const u8 zero[ETH_ALEN] = { 0 };
-
-	if (!changed)
-		return;
 
-	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
-		/*
-		 * While not associated, claim a BSSID of all-zeroes
-		 * so that drivers don't do any weird things with the
-		 * BSSID at that time.
-		 */
-		if (sdata->vif.bss_conf.assoc)
-			sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
-		else
-			sdata->vif.bss_conf.bssid = zero;
-	} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
-		sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
-	else if (sdata->vif.type == NL80211_IFTYPE_AP)
-		sdata->vif.bss_conf.bssid = sdata->vif.addr;
-	else if (sdata->vif.type == NL80211_IFTYPE_WDS)
-		sdata->vif.bss_conf.bssid = NULL;
-	else if (ieee80211_vif_is_mesh(&sdata->vif)) {
-		sdata->vif.bss_conf.bssid = zero;
-	} else {
-		WARN_ON(1);
+	if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
 		return;
-	}
-
-	switch (sdata->vif.type) {
-	case NL80211_IFTYPE_AP:
-	case NL80211_IFTYPE_ADHOC:
-	case NL80211_IFTYPE_WDS:
-	case NL80211_IFTYPE_MESH_POINT:
-		break;
-	default:
-		/* do not warn to simplify caller in scan.c */
-		changed &= ~BSS_CHANGED_BEACON_ENABLED;
-		if (WARN_ON(changed & BSS_CHANGED_BEACON))
-			return;
-		break;
-	}
-
-	if (changed & BSS_CHANGED_BEACON_ENABLED) {
-		if (local->quiescing || !ieee80211_sdata_running(sdata) ||
-		    test_bit(SCAN_SW_SCANNING, &local->scanning)) {
-			sdata->vif.bss_conf.enable_beacon = false;
-		} else {
-			/*
-			 * Beacon should be enabled, but AP mode must
-			 * check whether there is a beacon configured.
-			 */
-			switch (sdata->vif.type) {
-			case NL80211_IFTYPE_AP:
-				sdata->vif.bss_conf.enable_beacon =
-					!!sdata->u.ap.beacon;
-				break;
-			case NL80211_IFTYPE_ADHOC:
-				sdata->vif.bss_conf.enable_beacon =
-					!!sdata->u.ibss.presp;
-				break;
-			case NL80211_IFTYPE_MESH_POINT:
-				sdata->vif.bss_conf.enable_beacon = true;
-				break;
-			default:
-				/* not reached */
-				WARN_ON(1);
-				break;
-			}
-		}
-	}
 
 	drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
 }
@@ -281,11 +229,11 @@ static void ieee80211_tasklet_handler(unsigned long data)
 			/* Clear skb->pkt_type in order to not confuse kernel
 			 * netstack. */
 			skb->pkt_type = 0;
-			ieee80211_rx(local_to_hw(local), skb);
+			ieee80211_rx(&local->hw, skb);
 			break;
 		case IEEE80211_TX_STATUS_MSG:
 			skb->pkt_type = 0;
-			ieee80211_tx_status(local_to_hw(local), skb);
+			ieee80211_tx_status(&local->hw, skb);
 			break;
 		default:
 			WARN(1, "mac80211: Packet is of unknown type %d\n",
@@ -304,10 +252,8 @@ static void ieee80211_restart_work(struct work_struct *work)
 	/* wait for scan work complete */
 	flush_workqueue(local->workqueue);
 
-	mutex_lock(&local->mtx);
 	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
-		"%s called with hardware scan in progress\n", __func__);
-	mutex_unlock(&local->mtx);
+	     "%s called with hardware scan in progress\n", __func__);
 
 	rtnl_lock();
 	ieee80211_scan_cancel(local);
@@ -321,24 +267,24 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw)
 
 	trace_api_restart_hw(local);
 
+	wiphy_info(hw->wiphy,
+		   "Hardware restart was requested\n");
+
 	/* use this reason, ieee80211_reconfig will unblock it */
-	ieee80211_stop_queues_by_reason(hw,
-		IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+	ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
+					IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+
+	/*
+	 * Stop all Rx during the reconfig. We don't want state changes
+	 * or driver callbacks while this is in progress.
+	 */
+	local->in_reconfig = true;
+	barrier();
 
 	schedule_work(&local->restart_work);
 }
 EXPORT_SYMBOL(ieee80211_restart_hw);
 
-static void ieee80211_recalc_smps_work(struct work_struct *work)
-{
-	struct ieee80211_local *local =
-		container_of(work, struct ieee80211_local, recalc_smps);
-
-	mutex_lock(&local->iflist_mtx);
-	ieee80211_recalc_smps(local);
-	mutex_unlock(&local->iflist_mtx);
-}
-
 #ifdef CONFIG_INET
 static int ieee80211_ifa_changed(struct notifier_block *nb,
 				 unsigned long data, void *arg)
@@ -365,9 +311,6 @@ static int ieee80211_ifa_changed(struct notifier_block *nb,
 	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
 	bss_conf = &sdata->vif.bss_conf;
 
-	if (!ieee80211_sdata_running(sdata))
-		return NOTIFY_DONE;
-
 	/* ARP filtering is only supported in managed mode */
 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
 		return NOTIFY_DONE;
@@ -377,68 +320,70 @@ static int ieee80211_ifa_changed(struct notifier_block *nb,
 		return NOTIFY_DONE;
 
 	ifmgd = &sdata->u.mgd;
-	mutex_lock(&ifmgd->mtx);
+	sdata_lock(sdata);
 
 	/* Copy the addresses to the bss_conf list */
 	ifa = idev->ifa_list;
-	while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) {
-		bss_conf->arp_addr_list[c] = ifa->ifa_address;
+	while (ifa) {
+		if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
+			bss_conf->arp_addr_list[c] = ifa->ifa_address;
 		ifa = ifa->ifa_next;
 		c++;
 	}
 
-	/* If not all addresses fit the list, disable filtering */
-	if (ifa) {
-		sdata->arp_filter_state = false;
-		c = 0;
-	} else {
-		sdata->arp_filter_state = true;
-	}
 	bss_conf->arp_addr_cnt = c;
 
-	/* Configure driver only if associated */
-	if (ifmgd->associated) {
-		bss_conf->arp_filter_enabled = sdata->arp_filter_state;
+	/* Configure driver only if associated (which also implies it is up) */
+	if (ifmgd->associated)
 		ieee80211_bss_info_change_notify(sdata,
 						 BSS_CHANGED_ARP_FILTER);
-	}
 
-	mutex_unlock(&ifmgd->mtx);
+	sdata_unlock(sdata);
 
-	return NOTIFY_DONE;
+	return NOTIFY_OK;
 }
 #endif
 
-static int ieee80211_napi_poll(struct napi_struct *napi, int budget)
+#if IS_ENABLED(CONFIG_IPV6)
+static int ieee80211_ifa6_changed(struct notifier_block *nb,
+				  unsigned long data, void *arg)
 {
+	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
+	struct inet6_dev *idev = ifa->idev;
+	struct net_device *ndev = ifa->idev->dev;
 	struct ieee80211_local *local =
-		container_of(napi, struct ieee80211_local, napi);
+		container_of(nb, struct ieee80211_local, ifa6_notifier);
+	struct wireless_dev *wdev = ndev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata;
 
-	return local->ops->napi_poll(&local->hw, budget);
-}
+	/* Make sure it's our interface that got changed */
+	if (!wdev || wdev->wiphy != local->hw.wiphy)
+		return NOTIFY_DONE;
 
-void ieee80211_napi_schedule(struct ieee80211_hw *hw)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
+	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
 
-	napi_schedule(&local->napi);
-}
-EXPORT_SYMBOL(ieee80211_napi_schedule);
+	/*
+	 * For now only support station mode. This is mostly because
+	 * doing AP would have to handle AP_VLAN in some way ...
+	 */
+	if (sdata->vif.type != NL80211_IFTYPE_STATION)
+		return NOTIFY_DONE;
 
-void ieee80211_napi_complete(struct ieee80211_hw *hw)
-{
-	struct ieee80211_local *local = hw_to_local(hw);
+	drv_ipv6_addr_change(local, sdata, idev);
 
-	napi_complete(&local->napi);
+	return NOTIFY_OK;
 }
-EXPORT_SYMBOL(ieee80211_napi_complete);
+#endif
 
 /* There isn't a lot of sense in it, but you can transmit anything you like */
 static const struct ieee80211_txrx_stypes
 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
 	[NL80211_IFTYPE_ADHOC] = {
 		.tx = 0xffff,
-		.rx = BIT(IEEE80211_STYPE_ACTION >> 4),
+		.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+			BIT(IEEE80211_STYPE_AUTH >> 4) |
+			BIT(IEEE80211_STYPE_DEAUTH >> 4) |
+			BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
 	},
 	[NL80211_IFTYPE_STATION] = {
 		.tx = 0xffff,
@@ -481,6 +426,59 @@ ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
 			BIT(IEEE80211_STYPE_DEAUTH >> 4) |
 			BIT(IEEE80211_STYPE_ACTION >> 4),
 	},
+	[NL80211_IFTYPE_MESH_POINT] = {
+		.tx = 0xffff,
+		.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+			BIT(IEEE80211_STYPE_AUTH >> 4) |
+			BIT(IEEE80211_STYPE_DEAUTH >> 4),
+	},
+	[NL80211_IFTYPE_P2P_DEVICE] = {
+		.tx = 0xffff,
+		.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+			BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
+	},
+};
+
+static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
+	.ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
+			     IEEE80211_HT_AMPDU_PARM_DENSITY,
+
+	.cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+				IEEE80211_HT_CAP_MAX_AMSDU |
+				IEEE80211_HT_CAP_SGI_20 |
+				IEEE80211_HT_CAP_SGI_40 |
+				IEEE80211_HT_CAP_LDPC_CODING |
+				IEEE80211_HT_CAP_40MHZ_INTOLERANT),
+	.mcs = {
+		.rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
+			     0xff, 0xff, 0xff, 0xff, 0xff, },
+	},
+};
+
+static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
+	.vht_cap_info =
+		cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
+			    IEEE80211_VHT_CAP_SHORT_GI_80 |
+			    IEEE80211_VHT_CAP_SHORT_GI_160 |
+			    IEEE80211_VHT_CAP_RXSTBC_1 |
+			    IEEE80211_VHT_CAP_RXSTBC_2 |
+			    IEEE80211_VHT_CAP_RXSTBC_3 |
+			    IEEE80211_VHT_CAP_RXSTBC_4 |
+			    IEEE80211_VHT_CAP_TXSTBC |
+			    IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
+			    IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
+			    IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
+			    IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
+			    IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
+	.supp_mcs = {
+		.rx_mcs_map = cpu_to_le16(~0),
+		.tx_mcs_map = cpu_to_le16(~0),
+	},
+};
+
+static const u8 extended_capabilities[] = {
+	0, 0, 0, 0, 0, 0, 0,
+	WLAN_EXT_CAPA8_OPMODE_NOTIF,
 };
 
 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
@@ -489,6 +487,23 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 	struct ieee80211_local *local;
 	int priv_size, i;
 	struct wiphy *wiphy;
+	bool use_chanctx;
+
+	if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
+		    !ops->add_interface || !ops->remove_interface ||
+		    !ops->configure_filter))
+		return NULL;
+
+	if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
+		return NULL;
+
+	/* check all or no channel context operations exist */
+	i = !!ops->add_chanctx + !!ops->remove_chanctx +
+	    !!ops->change_chanctx + !!ops->assign_vif_chanctx +
+	    !!ops->unassign_vif_chanctx;
+	if (WARN_ON(i != 0 && i != 5))
+		return NULL;
+	use_chanctx = i == 5;
 
 	/* Ensure 32-byte alignment of our private data and hw private data.
 	 * We use the wiphy priv data for both our ieee80211_local and for
@@ -514,10 +529,34 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
 	wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
 
+	wiphy->privid = mac80211_wiphy_privid;
+
 	wiphy->flags |= WIPHY_FLAG_NETNS_OK |
 			WIPHY_FLAG_4ADDR_AP |
-			WIPHY_FLAG_4ADDR_STATION;
-	wiphy->privid = mac80211_wiphy_privid;
+			WIPHY_FLAG_4ADDR_STATION |
+			WIPHY_FLAG_REPORTS_OBSS |
+			WIPHY_FLAG_OFFCHAN_TX;
+
+	wiphy->extended_capabilities = extended_capabilities;
+	wiphy->extended_capabilities_mask = extended_capabilities;
+	wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
+
+	if (ops->remain_on_channel)
+		wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
+
+	wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
+			   NL80211_FEATURE_SAE |
+			   NL80211_FEATURE_HT_IBSS |
+			   NL80211_FEATURE_VIF_TXPOWER |
+			   NL80211_FEATURE_USERSPACE_MPM;
+
+	if (!ops->hw_scan)
+		wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
+				   NL80211_FEATURE_AP_SCAN;
+
+
+	if (!ops->set_key)
+		wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 
 	wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
 
@@ -527,24 +566,28 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
 	local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
 
-	BUG_ON(!ops->tx);
-	BUG_ON(!ops->start);
-	BUG_ON(!ops->stop);
-	BUG_ON(!ops->config);
-	BUG_ON(!ops->add_interface);
-	BUG_ON(!ops->remove_interface);
-	BUG_ON(!ops->configure_filter);
 	local->ops = ops;
+	local->use_chanctx = use_chanctx;
 
 	/* set up some defaults */
 	local->hw.queues = 1;
 	local->hw.max_rates = 1;
 	local->hw.max_report_rates = 0;
+	local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+	local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+	local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
 	local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
 	local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
-	local->user_power_level = -1;
-	local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
-	local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
+	local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+					 IEEE80211_RADIOTAP_MCS_HAVE_GI |
+					 IEEE80211_RADIOTAP_MCS_HAVE_BW;
+	local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
+					 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
+	local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
+	local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
+	local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
+	wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
+	wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
 
 	INIT_LIST_HEAD(&local->interfaces);
 
@@ -555,16 +598,20 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
 	mutex_init(&local->key_mtx);
 	spin_lock_init(&local->filter_lock);
+	spin_lock_init(&local->rx_path_lock);
 	spin_lock_init(&local->queue_stop_reason_lock);
 
-	INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
+	INIT_LIST_HEAD(&local->chanctx_list);
+	mutex_init(&local->chanctx_mtx);
 
-	ieee80211_work_init(local);
+	INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
 
 	INIT_WORK(&local->restart_work, ieee80211_restart_work);
 
+	INIT_WORK(&local->radar_detected_work,
+		  ieee80211_dfs_radar_detected_work);
+
 	INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
-	INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work);
 	local->smps_mode = IEEE80211_SMPS_OFF;
 
 	INIT_WORK(&local->dynamic_ps_enable_work,
@@ -574,6 +621,12 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 	setup_timer(&local->dynamic_ps_timer,
 		    ieee80211_dynamic_ps_timer, (unsigned long) local);
 
+	INIT_WORK(&local->sched_scan_stopped_work,
+		  ieee80211_sched_scan_stopped_work);
+
+	spin_lock_init(&local->ack_status_lock);
+	idr_init(&local->ack_status_frames);
+
 	sta_info_init(local);
 
 	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
@@ -590,20 +643,22 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 	skb_queue_head_init(&local->skb_queue);
 	skb_queue_head_init(&local->skb_queue_unreliable);
 
-	/* init dummy netdev for use w/ NAPI */
-	init_dummy_netdev(&local->napi_dev);
+	ieee80211_led_names(local);
+
+	ieee80211_roc_setup(local);
 
-	return local_to_hw(local);
+	return &local->hw;
 }
 EXPORT_SYMBOL(ieee80211_alloc_hw);
 
-int ieee80211_register_hw(struct ieee80211_hw *hw)
+static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
 {
-	struct ieee80211_local *local = hw_to_local(hw);
-	int result;
-	enum ieee80211_band band;
-	int channels, max_bitrates;
-	bool supp_ht;
+	bool have_wep = !(IS_ERR(local->wep_tx_tfm) ||
+			  IS_ERR(local->wep_rx_tfm));
+	bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE;
+	const struct ieee80211_cipher_scheme *cs = local->hw.cipher_schemes;
+	int n_suites = 0, r = 0, w = 0;
+	u32 *suites;
 	static const u32 cipher_suites[] = {
 		/* keep WEP first, it may be removed below */
 		WLAN_CIPHER_SUITE_WEP40,
@@ -615,9 +670,143 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 		WLAN_CIPHER_SUITE_AES_CMAC
 	};
 
+	/* Driver specifies the ciphers, we have nothing to do... */
+	if (local->hw.wiphy->cipher_suites && have_wep)
+		return 0;
+
+	/* Set up cipher suites if driver relies on mac80211 cipher defs */
+	if (!local->hw.wiphy->cipher_suites && !cs) {
+		local->hw.wiphy->cipher_suites = cipher_suites;
+		local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
+
+		if (!have_mfp)
+			local->hw.wiphy->n_cipher_suites--;
+
+		if (!have_wep) {
+			local->hw.wiphy->cipher_suites += 2;
+			local->hw.wiphy->n_cipher_suites -= 2;
+		}
+
+		return 0;
+	}
+
+	if (!local->hw.wiphy->cipher_suites) {
+		/*
+		 * Driver specifies cipher schemes only
+		 * We start counting ciphers defined by schemes, TKIP and CCMP
+		 */
+		n_suites = local->hw.n_cipher_schemes + 2;
+
+		/* check if we have WEP40 and WEP104 */
+		if (have_wep)
+			n_suites += 2;
+
+		/* check if we have AES_CMAC */
+		if (have_mfp)
+			n_suites++;
+
+		suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL);
+		if (!suites)
+			return -ENOMEM;
+
+		suites[w++] = WLAN_CIPHER_SUITE_CCMP;
+		suites[w++] = WLAN_CIPHER_SUITE_TKIP;
+
+		if (have_wep) {
+			suites[w++] = WLAN_CIPHER_SUITE_WEP40;
+			suites[w++] = WLAN_CIPHER_SUITE_WEP104;
+		}
+
+		if (have_mfp)
+			suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
+
+		for (r = 0; r < local->hw.n_cipher_schemes; r++)
+			suites[w++] = cs[r].cipher;
+	} else {
+		/* Driver provides cipher suites, but we need to exclude WEP */
+		suites = kmemdup(local->hw.wiphy->cipher_suites,
+				 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
+				 GFP_KERNEL);
+		if (!suites)
+			return -ENOMEM;
+
+		for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
+			u32 suite = local->hw.wiphy->cipher_suites[r];
+
+			if (suite == WLAN_CIPHER_SUITE_WEP40 ||
+			    suite == WLAN_CIPHER_SUITE_WEP104)
+				continue;
+			suites[w++] = suite;
+		}
+	}
+
+	local->hw.wiphy->cipher_suites = suites;
+	local->hw.wiphy->n_cipher_suites = w;
+	local->wiphy_ciphers_allocated = true;
+
+	return 0;
+}
+
+int ieee80211_register_hw(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+	int result, i;
+	enum ieee80211_band band;
+	int channels, max_bitrates;
+	bool supp_ht, supp_vht;
+	netdev_features_t feature_whitelist;
+	struct cfg80211_chan_def dflt_chandef = {};
+
+	if (hw->flags & IEEE80211_HW_QUEUE_CONTROL &&
+	    (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
+	     local->hw.offchannel_tx_hw_queue >= local->hw.queues))
+		return -EINVAL;
+
+#ifdef CONFIG_PM
+	if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
+		return -EINVAL;
+#endif
+
+	if (!local->use_chanctx) {
+		for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
+			const struct ieee80211_iface_combination *comb;
+
+			comb = &local->hw.wiphy->iface_combinations[i];
+
+			if (comb->num_different_channels > 1)
+				return -EINVAL;
+		}
+	} else {
+		/*
+		 * WDS is currently prohibited when channel contexts are used
+		 * because there's no clear definition of which channel WDS
+		 * type interfaces use
+		 */
+		if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
+			return -EINVAL;
+
+		/* DFS currently not supported with channel context drivers */
+		for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
+			const struct ieee80211_iface_combination *comb;
+
+			comb = &local->hw.wiphy->iface_combinations[i];
+
+			if (comb->radar_detect_widths)
+				return -EINVAL;
+		}
+	}
+
+	/* Only HW csum features are currently compatible with mac80211 */
+	feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			    NETIF_F_HW_CSUM;
+	if (WARN_ON(hw->netdev_features & ~feature_whitelist))
+		return -EINVAL;
+
 	if (hw->max_report_rates == 0)
 		hw->max_report_rates = hw->max_rates;
 
+	local->rx_chains = 1;
+
 	/*
 	 * generic code guarantees at least one band,
 	 * set this very early because much code assumes
@@ -626,23 +815,62 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	channels = 0;
 	max_bitrates = 0;
 	supp_ht = false;
+	supp_vht = false;
 	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 		struct ieee80211_supported_band *sband;
 
 		sband = local->hw.wiphy->bands[band];
 		if (!sband)
 			continue;
-		if (!local->oper_channel) {
+
+		if (!dflt_chandef.chan) {
+			cfg80211_chandef_create(&dflt_chandef,
+						&sband->channels[0],
+						NL80211_CHAN_NO_HT);
 			/* init channel we're on */
-			local->hw.conf.channel =
-			local->oper_channel = &sband->channels[0];
-			local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
+			if (!local->use_chanctx && !local->_oper_chandef.chan) {
+				local->hw.conf.chandef = dflt_chandef;
+				local->_oper_chandef = dflt_chandef;
+			}
+			local->monitor_chandef = dflt_chandef;
 		}
+
 		channels += sband->n_channels;
 
 		if (max_bitrates < sband->n_bitrates)
 			max_bitrates = sband->n_bitrates;
 		supp_ht = supp_ht || sband->ht_cap.ht_supported;
+		supp_vht = supp_vht || sband->vht_cap.vht_supported;
+
+		if (sband->ht_cap.ht_supported)
+			local->rx_chains =
+				max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
+				    local->rx_chains);
+
+		/* TODO: consider VHT for RX chains, hopefully it's the same */
+	}
+
+	/* if low-level driver supports AP, we also support VLAN */
+	if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
+		hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
+		hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
+	}
+
+	/* mac80211 always supports monitor */
+	hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
+	hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
+
+	/* mac80211 doesn't support more than one IBSS interface right now */
+	for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
+		const struct ieee80211_iface_combination *c;
+		int j;
+
+		c = &hw->wiphy->iface_combinations[i];
+
+		for (j = 0; j < c->n_limits; j++)
+			if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
+			    c->limits[j].max > 1)
+				return -EINVAL;
 	}
 
 	local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
@@ -650,25 +878,34 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (!local->int_scan_req)
 		return -ENOMEM;
 
-	/* if low-level driver supports AP, we also support VLAN */
-	if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP))
-		local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
-
-	/* mac80211 always supports monitor */
-	local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
+	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+		if (!local->hw.wiphy->bands[band])
+			continue;
+		local->int_scan_req->rates[band] = (u32) -1;
+	}
 
 #ifndef CONFIG_MAC80211_MESH
 	/* mesh depends on Kconfig, but drivers should set it if they want */
 	local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
 #endif
 
+	/* if the underlying driver supports mesh, mac80211 will (at least)
+	 * provide routing of mesh authentication frames to userspace */
+	if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
+		local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
+
 	/* mac80211 supports control port protocol changing */
 	local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
 
-	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
+	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) {
 		local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
-	else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
+	} else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) {
 		local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
+		if (hw->max_signal <= 0) {
+			result = -EINVAL;
+			goto fail_wiphy_register;
+		}
+	}
 
 	WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
 	     && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
@@ -685,6 +922,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (supp_ht)
 		local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
 
+	if (supp_vht)
+		local->scan_ies_len +=
+			2 + sizeof(struct ieee80211_vht_cap);
+
 	if (!local->ops->hw_scan) {
 		/* For hw_scan, driver needs to set these up. */
 		local->hw.wiphy->max_scan_ssids = 4;
@@ -701,41 +942,21 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (local->hw.wiphy->max_scan_ie_len)
 		local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
 
-	/* Set up cipher suites unless driver already did */
-	if (!local->hw.wiphy->cipher_suites) {
-		local->hw.wiphy->cipher_suites = cipher_suites;
-		local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
-		if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
-			local->hw.wiphy->n_cipher_suites--;
-	}
-	if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) {
-		if (local->hw.wiphy->cipher_suites == cipher_suites) {
-			local->hw.wiphy->cipher_suites += 2;
-			local->hw.wiphy->n_cipher_suites -= 2;
-		} else {
-			u32 *suites;
-			int r, w = 0;
-
-			/* Filter out WEP */
-
-			suites = kmemdup(
-				local->hw.wiphy->cipher_suites,
-				sizeof(u32) * local->hw.wiphy->n_cipher_suites,
-				GFP_KERNEL);
-			if (!suites)
-				return -ENOMEM;
-			for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
-				u32 suite = local->hw.wiphy->cipher_suites[r];
-				if (suite == WLAN_CIPHER_SUITE_WEP40 ||
-				    suite == WLAN_CIPHER_SUITE_WEP104)
-					continue;
-				suites[w++] = suite;
-			}
-			local->hw.wiphy->cipher_suites = suites;
-			local->hw.wiphy->n_cipher_suites = w;
-			local->wiphy_ciphers_allocated = true;
-		}
-	}
+	WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
+					 local->hw.n_cipher_schemes));
+
+	result = ieee80211_init_cipher_suites(local);
+	if (result < 0)
+		goto fail_wiphy_register;
+
+	if (!local->ops->remain_on_channel)
+		local->hw.wiphy->max_remain_on_channel_duration = 5000;
+
+	/* mac80211 based drivers don't support internal TDLS setup */
+	if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
+		local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
+
+	local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
 
 	result = wiphy_register(local->hw.wiphy);
 	if (result < 0)
@@ -749,7 +970,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 		hw->queues = IEEE80211_MAX_QUEUES;
 
 	local->workqueue =
-		alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
+		alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
 	if (!local->workqueue) {
 		result = -ENOMEM;
 		goto fail_workqueue;
@@ -760,10 +981,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	 * and we need some headroom for passing the frame to monitor
 	 * interfaces, but never both at the same time.
 	 */
-	BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
-			sizeof(struct ieee80211_tx_status_rtap_hdr));
 	local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
-				   sizeof(struct ieee80211_tx_status_rtap_hdr));
+				   IEEE80211_TX_STATUS_HEADROOM);
 
 	debugfs_hw_add(local);
 
@@ -778,15 +997,15 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 
 	local->dynamic_ps_forced_timeout = -1;
 
-	result = sta_info_start(local);
-	if (result < 0)
-		goto fail_sta_info;
-
 	result = ieee80211_wep_init(local);
 	if (result < 0)
 		wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
 			    result);
 
+	local->hw.conf.flags = IEEE80211_CONF_IDLE;
+
+	ieee80211_led_init(local);
+
 	rtnl_lock();
 
 	result = ieee80211_init_rate_ctrl_alg(local,
@@ -808,8 +1027,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 
 	rtnl_unlock();
 
-	ieee80211_led_init(local);
-
 	local->network_latency_notifier.notifier_call =
 		ieee80211_max_network_latency;
 	result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
@@ -826,12 +1043,22 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 		goto fail_ifa;
 #endif
 
-	netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll,
-			local->hw.napi_weight);
+#if IS_ENABLED(CONFIG_IPV6)
+	local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
+	result = register_inet6addr_notifier(&local->ifa6_notifier);
+	if (result)
+		goto fail_ifa6;
+#endif
 
 	return 0;
 
+#if IS_ENABLED(CONFIG_IPV6)
+ fail_ifa6:
 #ifdef CONFIG_INET
+	unregister_inetaddr_notifier(&local->ifa_notifier);
+#endif
+#endif
+#if defined(CONFIG_INET) || defined(CONFIG_IPV6)
  fail_ifa:
 	pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
 			       &local->network_latency_notifier);
@@ -844,7 +1071,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	rtnl_unlock();
 	ieee80211_wep_free(local);
 	sta_info_stop(local);
- fail_sta_info:
 	destroy_workqueue(local->workqueue);
  fail_workqueue:
 	wiphy_unregister(local->hw.wiphy);
@@ -856,6 +1082,18 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 }
 EXPORT_SYMBOL(ieee80211_register_hw);
 
+void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi,
+			struct net_device *napi_dev,
+			int (*poll)(struct napi_struct *, int),
+			int weight)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	netif_napi_add(napi_dev, napi, poll, weight);
+	local->napi = napi;
+}
+EXPORT_SYMBOL_GPL(ieee80211_napi_add);
+
 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
@@ -868,6 +1106,9 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
 #ifdef CONFIG_INET
 	unregister_inetaddr_notifier(&local->ifa_notifier);
 #endif
+#if IS_ENABLED(CONFIG_IPV6)
+	unregister_inet6addr_notifier(&local->ifa6_notifier);
+#endif
 
 	rtnl_lock();
 
@@ -880,17 +1121,11 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
 
 	rtnl_unlock();
 
-	/*
-	 * Now all work items will be gone, but the
-	 * timer might still be armed, so delete it
-	 */
-	del_timer_sync(&local->work_timer);
-
 	cancel_work_sync(&local->restart_work);
 	cancel_work_sync(&local->reconfig_filter);
+	flush_work(&local->sched_scan_stopped_work);
 
 	ieee80211_clear_tx_pending(local);
-	sta_info_stop(local);
 	rate_control_deinitialize(local);
 
 	if (skb_queue_len(&local->skb_queue) ||
@@ -901,12 +1136,20 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
 
 	destroy_workqueue(local->workqueue);
 	wiphy_unregister(local->hw.wiphy);
+	sta_info_stop(local);
 	ieee80211_wep_free(local);
 	ieee80211_led_exit(local);
 	kfree(local->int_scan_req);
 }
 EXPORT_SYMBOL(ieee80211_unregister_hw);
 
+static int ieee80211_free_ack_frame(int id, void *p, void *data)
+{
+	WARN_ONCE(1, "Have pending ack frames!\n");
+	kfree_skb(p);
+	return 0;
+}
+
 void ieee80211_free_hw(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
@@ -917,6 +1160,12 @@ void ieee80211_free_hw(struct ieee80211_hw *hw)
 	if (local->wiphy_ciphers_allocated)
 		kfree(local->hw.wiphy->cipher_suites);
 
+	idr_for_each(&local->ack_status_frames,
+		     ieee80211_free_ack_frame, NULL);
+	idr_destroy(&local->ack_status_frames);
+
+	kfree(rcu_access_pointer(local->tx_latency));
+
 	wiphy_free(local->hw.wiphy);
 }
 EXPORT_SYMBOL(ieee80211_free_hw);
@@ -963,10 +1212,11 @@ static void __exit ieee80211_exit(void)
 	rc80211_minstrel_ht_exit();
 	rc80211_minstrel_exit();
 
-	if (mesh_allocated)
-		ieee80211s_stop();
+	ieee80211s_stop();
 
 	ieee80211_iface_exit();
+
+	rcu_barrier();
 }