Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 221 insertions, 122 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index b606b53a49a7..bfef1b215050 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -188,6 +188,16 @@ ieee80211_ibss_build_presp(struct ieee80211_sub_if_data *sdata,
 		 */
 		pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap,
 						 chandef, 0);
+
+		/* add VHT capability and information IEs */
+		if (chandef->width != NL80211_CHAN_WIDTH_20 &&
+		    chandef->width != NL80211_CHAN_WIDTH_40 &&
+		    sband->vht_cap.vht_supported) {
+			pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap,
+							 sband->vht_cap.cap);
+			pos = ieee80211_ie_build_vht_oper(pos, &sband->vht_cap,
+							  chandef);
+		}
 	}
 
 	if (local->hw.queues >= IEEE80211_NUM_ACS)
@@ -249,8 +259,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	if (presp)
 		kfree_rcu(presp, rcu_head);
 
-	sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
-
 	/* make a copy of the chandef, it could be modified below. */
 	chandef = *req_chandef;
 	chan = chandef.chan;
@@ -417,6 +425,11 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 					NL80211_CHAN_WIDTH_20_NOHT);
 		chandef.width = sdata->u.ibss.chandef.width;
 		break;
+	case NL80211_CHAN_WIDTH_80:
+	case NL80211_CHAN_WIDTH_160:
+		chandef = sdata->u.ibss.chandef;
+		chandef.chan = cbss->channel;
+		break;
 	default:
 		/* fall back to 20 MHz for unsupported modes */
 		cfg80211_chandef_create(&chandef, cbss->channel,
@@ -470,22 +483,19 @@ int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
 	struct beacon_data *presp, *old_presp;
 	struct cfg80211_bss *cbss;
 	const struct cfg80211_bss_ies *ies;
-	u16 capability;
+	u16 capability = 0;
 	u64 tsf;
 	int ret = 0;
 
 	sdata_assert_lock(sdata);
 
-	capability = WLAN_CAPABILITY_IBSS;
-
 	if (ifibss->privacy)
-		capability |= WLAN_CAPABILITY_PRIVACY;
+		capability = WLAN_CAPABILITY_PRIVACY;
 
 	cbss = cfg80211_get_bss(sdata->local->hw.wiphy, ifibss->chandef.chan,
 				ifibss->bssid, ifibss->ssid,
-				ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
-				WLAN_CAPABILITY_PRIVACY,
-				capability);
+				ifibss->ssid_len, IEEE80211_BSS_TYPE_IBSS,
+				IEEE80211_PRIVACY(ifibss->privacy));
 
 	if (WARN_ON(!cbss)) {
 		ret = -EINVAL;
@@ -525,23 +535,17 @@ int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct cfg80211_bss *cbss;
 	int err, changed = 0;
-	u16 capability;
 
 	sdata_assert_lock(sdata);
 
 	/* update cfg80211 bss information with the new channel */
 	if (!is_zero_ether_addr(ifibss->bssid)) {
-		capability = WLAN_CAPABILITY_IBSS;
-
-		if (ifibss->privacy)
-			capability |= WLAN_CAPABILITY_PRIVACY;
-
 		cbss = cfg80211_get_bss(sdata->local->hw.wiphy,
 					ifibss->chandef.chan,
 					ifibss->bssid, ifibss->ssid,
-					ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
-					WLAN_CAPABILITY_PRIVACY,
-					capability);
+					ifibss->ssid_len,
+					IEEE80211_BSS_TYPE_IBSS,
+					IEEE80211_PRIVACY(ifibss->privacy));
 		/* XXX: should not really modify cfg80211 data */
 		if (cbss) {
 			cbss->channel = sdata->csa_chandef.chan;
@@ -682,19 +686,13 @@ static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata)
 	struct cfg80211_bss *cbss;
 	struct beacon_data *presp;
 	struct sta_info *sta;
-	u16 capability;
 
 	if (!is_zero_ether_addr(ifibss->bssid)) {
-		capability = WLAN_CAPABILITY_IBSS;
-
-		if (ifibss->privacy)
-			capability |= WLAN_CAPABILITY_PRIVACY;
-
 		cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan,
 					ifibss->bssid, ifibss->ssid,
-					ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
-					WLAN_CAPABILITY_PRIVACY,
-					capability);
+					ifibss->ssid_len,
+					IEEE80211_BSS_TYPE_IBSS,
+					IEEE80211_PRIVACY(ifibss->privacy));
 
 		if (cbss) {
 			cfg80211_unlink_bss(local->hw.wiphy, cbss);
@@ -980,110 +978,140 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
 			    mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0, 0);
 }
 
-static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
-				  struct ieee80211_mgmt *mgmt, size_t len,
-				  struct ieee80211_rx_status *rx_status,
-				  struct ieee802_11_elems *elems)
+static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata,
+				      struct ieee80211_mgmt *mgmt, size_t len,
+				      struct ieee80211_rx_status *rx_status,
+				      struct ieee802_11_elems *elems,
+				      struct ieee80211_channel *channel)
 {
-	struct ieee80211_local *local = sdata->local;
-	struct cfg80211_bss *cbss;
-	struct ieee80211_bss *bss;
 	struct sta_info *sta;
-	struct ieee80211_channel *channel;
-	u64 beacon_timestamp, rx_timestamp;
-	u32 supp_rates = 0;
 	enum ieee80211_band band = rx_status->band;
 	enum nl80211_bss_scan_width scan_width;
+	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
 	bool rates_updated = false;
+	u32 supp_rates = 0;
 
-	channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
-	if (!channel)
+	if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
 		return;
 
-	if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
-	    ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) {
+	if (!ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid))
+		return;
 
-		rcu_read_lock();
-		sta = sta_info_get(sdata, mgmt->sa);
-
-		if (elems->supp_rates) {
-			supp_rates = ieee80211_sta_get_rates(sdata, elems,
-							     band, NULL);
-			if (sta) {
-				u32 prev_rates;
-
-				prev_rates = sta->sta.supp_rates[band];
-				/* make sure mandatory rates are always added */
-				scan_width = NL80211_BSS_CHAN_WIDTH_20;
-				if (rx_status->flag & RX_FLAG_5MHZ)
-					scan_width = NL80211_BSS_CHAN_WIDTH_5;
-				if (rx_status->flag & RX_FLAG_10MHZ)
-					scan_width = NL80211_BSS_CHAN_WIDTH_10;
-
-				sta->sta.supp_rates[band] = supp_rates |
-					ieee80211_mandatory_rates(sband,
-								  scan_width);
-				if (sta->sta.supp_rates[band] != prev_rates) {
-					ibss_dbg(sdata,
-						 "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n",
-						 sta->sta.addr, prev_rates,
-						 sta->sta.supp_rates[band]);
-					rates_updated = true;
-				}
-			} else {
-				rcu_read_unlock();
-				sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid,
-						mgmt->sa, supp_rates);
+	rcu_read_lock();
+	sta = sta_info_get(sdata, mgmt->sa);
+
+	if (elems->supp_rates) {
+		supp_rates = ieee80211_sta_get_rates(sdata, elems,
+						     band, NULL);
+		if (sta) {
+			u32 prev_rates;
+
+			prev_rates = sta->sta.supp_rates[band];
+			/* make sure mandatory rates are always added */
+			scan_width = NL80211_BSS_CHAN_WIDTH_20;
+			if (rx_status->flag & RX_FLAG_5MHZ)
+				scan_width = NL80211_BSS_CHAN_WIDTH_5;
+			if (rx_status->flag & RX_FLAG_10MHZ)
+				scan_width = NL80211_BSS_CHAN_WIDTH_10;
+
+			sta->sta.supp_rates[band] = supp_rates |
+				ieee80211_mandatory_rates(sband, scan_width);
+			if (sta->sta.supp_rates[band] != prev_rates) {
+				ibss_dbg(sdata,
+					 "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n",
+					 sta->sta.addr, prev_rates,
+					 sta->sta.supp_rates[band]);
+				rates_updated = true;
 			}
+		} else {
+			rcu_read_unlock();
+			sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid,
+						     mgmt->sa, supp_rates);
 		}
+	}
 
-		if (sta && elems->wmm_info)
-			sta->sta.wme = true;
-
-		if (sta && elems->ht_operation && elems->ht_cap_elem &&
-		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
-		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 &&
-		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) {
-			/* we both use HT */
-			struct ieee80211_ht_cap htcap_ie;
-			struct cfg80211_chan_def chandef;
-
-			ieee80211_ht_oper_to_chandef(channel,
-						     elems->ht_operation,
-						     &chandef);
-
-			memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie));
-
-			/*
-			 * fall back to HT20 if we don't use or use
-			 * the other extension channel
-			 */
-			if (chandef.center_freq1 !=
-			    sdata->u.ibss.chandef.center_freq1)
-				htcap_ie.cap_info &=
-					cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
-
-			rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(
-						sdata, sband, &htcap_ie, sta);
+	if (sta && elems->wmm_info && local->hw.queues >= IEEE80211_NUM_ACS)
+		sta->sta.wme = true;
+
+	if (sta && elems->ht_operation && elems->ht_cap_elem &&
+	    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
+	    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 &&
+	    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) {
+		/* we both use HT */
+		struct ieee80211_ht_cap htcap_ie;
+		struct cfg80211_chan_def chandef;
+		enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth;
+
+		ieee80211_ht_oper_to_chandef(channel,
+					     elems->ht_operation,
+					     &chandef);
+
+		memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie));
+		rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
+								   &htcap_ie,
+								   sta);
+
+		if (elems->vht_operation && elems->vht_cap_elem &&
+		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20 &&
+		    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_40) {
+			/* we both use VHT */
+			struct ieee80211_vht_cap cap_ie;
+			struct ieee80211_sta_vht_cap cap = sta->sta.vht_cap;
+
+			ieee80211_vht_oper_to_chandef(channel,
+						      elems->vht_operation,
+						      &chandef);
+			memcpy(&cap_ie, elems->vht_cap_elem, sizeof(cap_ie));
+			ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
+							    &cap_ie, sta);
+			if (memcmp(&cap, &sta->sta.vht_cap, sizeof(cap)))
+				rates_updated |= true;
 		}
 
-		if (sta && rates_updated) {
-			u32 changed = IEEE80211_RC_SUPP_RATES_CHANGED;
-			u8 rx_nss = sta->sta.rx_nss;
+		if (bw != sta->sta.bandwidth)
+			rates_updated |= true;
 
-			/* Force rx_nss recalculation */
-			sta->sta.rx_nss = 0;
-			rate_control_rate_init(sta);
-			if (sta->sta.rx_nss != rx_nss)
-				changed |= IEEE80211_RC_NSS_CHANGED;
+		if (!cfg80211_chandef_compatible(&sdata->u.ibss.chandef,
+						 &chandef))
+			WARN_ON_ONCE(1);
+	}
 
-			drv_sta_rc_update(local, sdata, &sta->sta, changed);
-		}
+	if (sta && rates_updated) {
+		u32 changed = IEEE80211_RC_SUPP_RATES_CHANGED;
+		u8 rx_nss = sta->sta.rx_nss;
 
-		rcu_read_unlock();
+		/* Force rx_nss recalculation */
+		sta->sta.rx_nss = 0;
+		rate_control_rate_init(sta);
+		if (sta->sta.rx_nss != rx_nss)
+			changed |= IEEE80211_RC_NSS_CHANGED;
+
+		drv_sta_rc_update(local, sdata, &sta->sta, changed);
 	}
 
+	rcu_read_unlock();
+}
+
+static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
+				  struct ieee80211_mgmt *mgmt, size_t len,
+				  struct ieee80211_rx_status *rx_status,
+				  struct ieee802_11_elems *elems)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct cfg80211_bss *cbss;
+	struct ieee80211_bss *bss;
+	struct ieee80211_channel *channel;
+	u64 beacon_timestamp, rx_timestamp;
+	u32 supp_rates = 0;
+	enum ieee80211_band band = rx_status->band;
+
+	channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
+	if (!channel)
+		return;
+
+	ieee80211_update_sta_info(sdata, mgmt, len, rx_status, elems, channel);
+
 	bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
 					channel);
 	if (!bss)
@@ -1273,7 +1301,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
 
 	scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef);
 	ieee80211_request_ibss_scan(sdata, ifibss->ssid, ifibss->ssid_len,
-				    NULL, scan_width);
+				    NULL, 0, scan_width);
 }
 
 static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
@@ -1304,14 +1332,82 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
 
 	if (ifibss->privacy)
 		capability |= WLAN_CAPABILITY_PRIVACY;
-	else
-		sdata->drop_unencrypted = 0;
 
 	__ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int,
 				  &ifibss->chandef, ifibss->basic_rates,
 				  capability, 0, true);
 }
 
+static unsigned ibss_setup_channels(struct wiphy *wiphy,
+				    struct ieee80211_channel **channels,
+				    unsigned int channels_max,
+				    u32 center_freq, u32 width)
+{
+	struct ieee80211_channel *chan = NULL;
+	unsigned int n_chan = 0;
+	u32 start_freq, end_freq, freq;
+
+	if (width <= 20) {
+		start_freq = center_freq;
+		end_freq = center_freq;
+	} else {
+		start_freq = center_freq - width / 2 + 10;
+		end_freq = center_freq + width / 2 - 10;
+	}
+
+	for (freq = start_freq; freq <= end_freq; freq += 20) {
+		chan = ieee80211_get_channel(wiphy, freq);
+		if (!chan)
+			continue;
+		if (n_chan >= channels_max)
+			return n_chan;
+
+		channels[n_chan] = chan;
+		n_chan++;
+	}
+
+	return n_chan;
+}
+
+static unsigned int
+ieee80211_ibss_setup_scan_channels(struct wiphy *wiphy,
+				   const struct cfg80211_chan_def *chandef,
+				   struct ieee80211_channel **channels,
+				   unsigned int channels_max)
+{
+	unsigned int n_chan = 0;
+	u32 width, cf1, cf2 = 0;
+
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_40:
+		width = 40;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+		cf2 = chandef->center_freq2;
+		/* fall through */
+	case NL80211_CHAN_WIDTH_80:
+		width = 80;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		width = 160;
+		break;
+	default:
+		width = 20;
+		break;
+	}
+
+	cf1 = chandef->center_freq1;
+
+	n_chan = ibss_setup_channels(wiphy, channels, channels_max, cf1, width);
+
+	if (cf2)
+		n_chan += ibss_setup_channels(wiphy, &channels[n_chan],
+					      channels_max - n_chan, cf2,
+					      width);
+
+	return n_chan;
+}
+
 /*
  * This function is called with state == IEEE80211_IBSS_MLME_SEARCH
  */
@@ -1325,7 +1421,6 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 	const u8 *bssid = NULL;
 	enum nl80211_bss_scan_width scan_width;
 	int active_ibss;
-	u16 capability;
 
 	sdata_assert_lock(sdata);
 
@@ -1335,9 +1430,6 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 	if (active_ibss)
 		return;
 
-	capability = WLAN_CAPABILITY_IBSS;
-	if (ifibss->privacy)
-		capability |= WLAN_CAPABILITY_PRIVACY;
 	if (ifibss->fixed_bssid)
 		bssid = ifibss->bssid;
 	if (ifibss->fixed_channel)
@@ -1346,8 +1438,8 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 		bssid = ifibss->bssid;
 	cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid,
 				ifibss->ssid, ifibss->ssid_len,
-				WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY,
-				capability);
+				IEEE80211_BSS_TYPE_IBSS,
+				IEEE80211_PRIVACY(ifibss->privacy));
 
 	if (cbss) {
 		struct ieee80211_bss *bss;
@@ -1381,11 +1473,18 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 	/* Selected IBSS not found in current scan results - try to scan */
 	if (time_after(jiffies, ifibss->last_scan_completed +
 					IEEE80211_SCAN_INTERVAL)) {
+		struct ieee80211_channel *channels[8];
+		unsigned int num;
+
 		sdata_info(sdata, "Trigger new scan to find an IBSS to join\n");
 
+		num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
+							 &ifibss->chandef,
+							 channels,
+							 ARRAY_SIZE(channels));
 		scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef);
 		ieee80211_request_ibss_scan(sdata, ifibss->ssid,
-					    ifibss->ssid_len, chan,
+					    ifibss->ssid_len, channels, num,
 					    scan_width);
 	} else {
 		int interval = IEEE80211_SCAN_INTERVAL;
@@ -1742,7 +1841,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 
 	ieee80211_ibss_disconnect(sdata);
 	ifibss->ssid_len = 0;
-	memset(ifibss->bssid, 0, ETH_ALEN);
+	eth_zero_addr(ifibss->bssid);
 
 	/* remove beacon */
 	kfree(sdata->u.ibss.ie);