Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

Conflicts:
	drivers/net/wireless/ath/ath9k/recv.c

9 files changed, 96 insertions, 93 deletions

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 2d4268c5529d..cd10c1985074 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -705,12 +705,8 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_AP_VLAN:
 	case NL80211_IFTYPE_WDS:
-		/* these interface types don't really have a channel */
-		return;
 	case NL80211_IFTYPE_P2P_DEVICE:
-		if (wdev->wiphy->features &
-				NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL)
-			*chanmode = CHAN_MODE_EXCLUSIVE;
+		/* these interface types don't really have a channel */
 		return;
 	case NL80211_IFTYPE_UNSPECIFIED:
 	case NUM_NL80211_IFTYPES:
diff --git a/net/wireless/genregdb.awk b/net/wireless/genregdb.awk
index 9a8217d2a908..fdfd3f063a9b 100644
--- a/net/wireless/genregdb.awk
+++ b/net/wireless/genregdb.awk
@@ -105,6 +105,8 @@ function parse_reg_rule()
 			flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
 		} else if (flagarray[arg] == "NO-IR") {
 			flags = flags "\n\t\t\tNL80211_RRF_NO_IR | "
+		} else if (flagarray[arg] == "AUTO-BW") {
+			flags = flags "\n\t\t\tNL80211_RRF_AUTO_BW | "
 		}
 
 	}
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 1470b90e438f..349db9ddc0d1 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -128,12 +128,11 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 #endif
 	check_chan = params->chandef.chan;
 	if (params->userspace_handles_dfs) {
-		/* use channel NULL to check for radar even if the current
-		 * channel is not a radar channel - it might decide to change
-		 * to DFS channel later.
+		/* Check for radar even if the current channel is not
+		 * a radar channel - it might decide to change to DFS
+		 * channel later.
 		 */
 		radar_detect_width = BIT(params->chandef.width);
-		check_chan = NULL;
 	}
 
 	err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index d42a3fcb2f67..5af5cc6b2c4c 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -236,6 +236,12 @@ int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
 		if (!netif_running(wdev->netdev))
 			return -ENETDOWN;
 
+		/* cfg80211_can_use_chan() calls
+		 * cfg80211_can_use_iftype_chan() with no radar
+		 * detection, so if we're trying to use a radar
+		 * channel here, something is wrong.
+		 */
+		WARN_ON_ONCE(chandef->chan->flags & IEEE80211_CHAN_RADAR);
 		err = cfg80211_can_use_chan(rdev, wdev, chandef->chan,
 					    CHAN_MODE_SHARED);
 		if (err)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8e6b6a2d35cb..2c38b28a85b9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -384,6 +384,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 				   .len = IEEE80211_QOS_MAP_LEN_MAX },
 	[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 	[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
+	[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 };
 
 /* policy for the key attributes */
@@ -4627,6 +4628,8 @@ static int parse_reg_rule(struct nlattr *tb[],
 		return -EINVAL;
 	if (!tb[NL80211_ATTR_FREQ_RANGE_END])
 		return -EINVAL;
+	if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
+		return -EINVAL;
 	if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
 		return -EINVAL;
 
@@ -4636,9 +4639,8 @@ static int parse_reg_rule(struct nlattr *tb[],
 		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
 	freq_range->end_freq_khz =
 		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
-	if (tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
-		freq_range->max_bandwidth_khz =
-			nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
+	freq_range->max_bandwidth_khz =
+		nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
 
 	power_rule->max_eirp =
 		nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
@@ -5710,8 +5712,8 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
 		request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
 	}
 
-	if (info->attrs[NL80211_ATTR_IE]) {
-		request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+	if (ie_len) {
+		request->ie_len = ie_len;
 		memcpy((void *)request->ie,
 		       nla_data(info->attrs[NL80211_ATTR_IE]),
 		       request->ie_len);
@@ -5911,17 +5913,22 @@ skip_beacons:
 	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
 		return -EINVAL;
 
-	if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
-	    dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
-	    dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
+	switch (dev->ieee80211_ptr->iftype) {
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_MESH_POINT:
 		err = cfg80211_chandef_dfs_required(wdev->wiphy,
 						    &params.chandef);
-		if (err < 0) {
+		if (err < 0)
 			return err;
-		} else if (err) {
+		if (err) {
 			radar_detect_width = BIT(params.chandef.width);
 			params.radar_required = true;
 		}
+		break;
+	default:
+		break;
 	}
 
 	err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
@@ -7269,6 +7276,7 @@ static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
 	struct net_device *dev = info->user_ptr[1];
 	u8 action_code, dialog_token;
+	u32 peer_capability = 0;
 	u16 status_code;
 	u8 *peer;
 
@@ -7287,9 +7295,12 @@ static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
 	action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
 	status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
 	dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
+	if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
+		peer_capability =
+			nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
 
 	return rdev_tdls_mgmt(rdev, dev, peer, action_code,
-			      dialog_token, status_code,
+			      dialog_token, status_code, peer_capability,
 			      nla_data(info->attrs[NL80211_ATTR_IE]),
 			      nla_len(info->attrs[NL80211_ATTR_IE]));
 }
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index c8e225947adb..74d97d33c938 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -769,13 +769,16 @@ static inline int rdev_set_rekey_data(struct cfg80211_registered_device *rdev,
 static inline int rdev_tdls_mgmt(struct cfg80211_registered_device *rdev,
 				 struct net_device *dev, u8 *peer,
 				 u8 action_code, u8 dialog_token,
-				 u16 status_code, const u8 *buf, size_t len)
+				 u16 status_code, u32 peer_capability,
+				 const u8 *buf, size_t len)
 {
 	int ret;
 	trace_rdev_tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
-			     dialog_token, status_code, buf, len);
+			     dialog_token, status_code, peer_capability,
+			     buf, len);
 	ret = rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
-				   dialog_token, status_code, buf, len);
+				   dialog_token, status_code, peer_capability,
+				   buf, len);
 	trace_rdev_return_int(&rdev->wiphy, ret);
 	return ret;
 }
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 24c257cd706b..90b82e08ae69 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -563,9 +563,6 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
 		if (freq_range_tmp->end_freq_khz < freq_range->start_freq_khz)
 			break;
 
-		if (freq_range_tmp->max_bandwidth_khz)
-			break;
-
 		freq_range = freq_range_tmp;
 	}
 
@@ -582,9 +579,6 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
 		if (freq_range_tmp->start_freq_khz > freq_range->end_freq_khz)
 			break;
 
-		if (freq_range_tmp->max_bandwidth_khz)
-			break;
-
 		freq_range = freq_range_tmp;
 	}
 
@@ -729,21 +723,29 @@ static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
 	max_bandwidth1 = freq_range1->max_bandwidth_khz;
 	max_bandwidth2 = freq_range2->max_bandwidth_khz;
 
-	/*
-	 * In case max_bandwidth1 == 0 and max_bandwith2 == 0 set
-	 * output bandwidth as 0 (auto calculation). Next we will
-	 * calculate this correctly in handle_channel function.
-	 * In other case calculate output bandwidth here.
-	 */
-	if (max_bandwidth1 || max_bandwidth2) {
-		if (!max_bandwidth1)
-			max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1);
-		if (!max_bandwidth2)
-			max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2);
-	}
+	if (rule1->flags & NL80211_RRF_AUTO_BW)
+		max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1);
+	if (rule2->flags & NL80211_RRF_AUTO_BW)
+		max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2);
 
 	freq_range->max_bandwidth_khz = min(max_bandwidth1, max_bandwidth2);
 
+	intersected_rule->flags = rule1->flags | rule2->flags;
+
+	/*
+	 * In case NL80211_RRF_AUTO_BW requested for both rules
+	 * set AUTO_BW in intersected rule also. Next we will
+	 * calculate BW correctly in handle_channel function.
+	 * In other case remove AUTO_BW flag while we calculate
+	 * maximum bandwidth correctly and auto calculation is
+	 * not required.
+	 */
+	if ((rule1->flags & NL80211_RRF_AUTO_BW) &&
+	    (rule2->flags & NL80211_RRF_AUTO_BW))
+		intersected_rule->flags |= NL80211_RRF_AUTO_BW;
+	else
+		intersected_rule->flags &= ~NL80211_RRF_AUTO_BW;
+
 	freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz;
 	if (freq_range->max_bandwidth_khz > freq_diff)
 		freq_range->max_bandwidth_khz = freq_diff;
@@ -753,8 +755,6 @@ static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
 	power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain,
 		power_rule2->max_antenna_gain);
 
-	intersected_rule->flags = rule1->flags | rule2->flags;
-
 	if (!is_valid_reg_rule(intersected_rule))
 		return -EINVAL;
 
@@ -938,31 +938,42 @@ const char *reg_initiator_name(enum nl80211_reg_initiator initiator)
 EXPORT_SYMBOL(reg_initiator_name);
 
 #ifdef CONFIG_CFG80211_REG_DEBUG
-static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
+static void chan_reg_rule_print_dbg(const struct ieee80211_regdomain *regd,
+				    struct ieee80211_channel *chan,
 				    const struct ieee80211_reg_rule *reg_rule)
 {
 	const struct ieee80211_power_rule *power_rule;
 	const struct ieee80211_freq_range *freq_range;
-	char max_antenna_gain[32];
+	char max_antenna_gain[32], bw[32];
 
 	power_rule = &reg_rule->power_rule;
 	freq_range = &reg_rule->freq_range;
 
 	if (!power_rule->max_antenna_gain)
-		snprintf(max_antenna_gain, 32, "N/A");
+		snprintf(max_antenna_gain, sizeof(max_antenna_gain), "N/A");
 	else
-		snprintf(max_antenna_gain, 32, "%d", power_rule->max_antenna_gain);
+		snprintf(max_antenna_gain, sizeof(max_antenna_gain), "%d",
+			 power_rule->max_antenna_gain);
+
+	if (reg_rule->flags & NL80211_RRF_AUTO_BW)
+		snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO",
+			 freq_range->max_bandwidth_khz,
+			 reg_get_max_bandwidth(regd, reg_rule));
+	else
+		snprintf(bw, sizeof(bw), "%d KHz",
+			 freq_range->max_bandwidth_khz);
 
 	REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n",
 		      chan->center_freq);
 
-	REG_DBG_PRINT("%d KHz - %d KHz @ %d KHz), (%s mBi, %d mBm)\n",
+	REG_DBG_PRINT("%d KHz - %d KHz @ %s), (%s mBi, %d mBm)\n",
 		      freq_range->start_freq_khz, freq_range->end_freq_khz,
-		      freq_range->max_bandwidth_khz, max_antenna_gain,
+		      bw, max_antenna_gain,
 		      power_rule->max_eirp);
 }
 #else
-static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
+static void chan_reg_rule_print_dbg(const struct ieee80211_regdomain *regd,
+				    struct ieee80211_channel *chan,
 				    const struct ieee80211_reg_rule *reg_rule)
 {
 	return;
@@ -1022,17 +1033,16 @@ static void handle_channel(struct wiphy *wiphy,
 		return;
 	}
 
-	chan_reg_rule_print_dbg(chan, reg_rule);
+	regd = reg_get_regdomain(wiphy);
+	chan_reg_rule_print_dbg(regd, chan, reg_rule);
 
 	power_rule = &reg_rule->power_rule;
 	freq_range = &reg_rule->freq_range;
 
 	max_bandwidth_khz = freq_range->max_bandwidth_khz;
 	/* Check if auto calculation requested */
-	if (!max_bandwidth_khz) {
-		regd = reg_get_regdomain(wiphy);
+	if (reg_rule->flags & NL80211_RRF_AUTO_BW)
 		max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule);
-	}
 
 	if (max_bandwidth_khz < MHZ_TO_KHZ(40))
 		bw_flags = IEEE80211_CHAN_NO_HT40;
@@ -1437,14 +1447,14 @@ static void handle_channel_custom(struct wiphy *wiphy,
 		return;
 	}
 
-	chan_reg_rule_print_dbg(chan, reg_rule);
+	chan_reg_rule_print_dbg(regd, chan, reg_rule);
 
 	power_rule = &reg_rule->power_rule;
 	freq_range = &reg_rule->freq_range;
 
 	max_bandwidth_khz = freq_range->max_bandwidth_khz;
 	/* Check if auto calculation requested */
-	if (!max_bandwidth_khz)
+	if (reg_rule->flags & NL80211_RRF_AUTO_BW)
 		max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule);
 
 	if (max_bandwidth_khz < MHZ_TO_KHZ(40))
@@ -2254,11 +2264,12 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
 		freq_range = &reg_rule->freq_range;
 		power_rule = &reg_rule->power_rule;
 
-		if (!freq_range->max_bandwidth_khz)
-			snprintf(bw, 32, "%d KHz, AUTO",
+		if (reg_rule->flags & NL80211_RRF_AUTO_BW)
+			snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO",
+				 freq_range->max_bandwidth_khz,
 				 reg_get_max_bandwidth(rd, reg_rule));
 		else
-			snprintf(bw, 32, "%d KHz",
+			snprintf(bw, sizeof(bw), "%d KHz",
 				 freq_range->max_bandwidth_khz);
 
 		/*
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 5eaeed59db07..aabccf13e07b 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1468,9 +1468,10 @@ TRACE_EVENT(rdev_sched_scan_start,
 TRACE_EVENT(rdev_tdls_mgmt,
 	TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
 		 u8 *peer, u8 action_code, u8 dialog_token,
-		 u16 status_code, const u8 *buf, size_t len),
+		 u16 status_code, u32 peer_capability,
+		 const u8 *buf, size_t len),
 	TP_ARGS(wiphy, netdev, peer, action_code, dialog_token, status_code,
-		buf, len),
+		peer_capability, buf, len),
 	TP_STRUCT__entry(
 		WIPHY_ENTRY
 		NETDEV_ENTRY
@@ -1478,6 +1479,7 @@ TRACE_EVENT(rdev_tdls_mgmt,
 		__field(u8, action_code)
 		__field(u8, dialog_token)
 		__field(u16, status_code)
+		__field(u32, peer_capability)
 		__dynamic_array(u8, buf, len)
 	),
 	TP_fast_assign(
@@ -1487,13 +1489,15 @@ TRACE_EVENT(rdev_tdls_mgmt,
 		__entry->action_code = action_code;
 		__entry->dialog_token = dialog_token;
 		__entry->status_code = status_code;
+		__entry->peer_capability = peer_capability;
 		memcpy(__get_dynamic_array(buf), buf, len);
 	),
 	TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT ", action_code: %u, "
-		  "dialog_token: %u, status_code: %u, buf: %#.2x ",
+		  "dialog_token: %u, status_code: %u, peer_capability: %u buf: %#.2x ",
 		  WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(peer),
 		  __entry->action_code, __entry->dialog_token,
-		  __entry->status_code, ((u8 *)__get_dynamic_array(buf))[0])
+		  __entry->status_code, __entry->peer_capability,
+		  ((u8 *)__get_dynamic_array(buf))[0])
 );
 
 TRACE_EVENT(rdev_dump_survey,
diff --git a/net/wireless/util.c b/net/wireless/util.c
index ad03af385556..2bb685f3e8fc 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1285,7 +1285,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	enum cfg80211_chan_mode chmode;
 	int num_different_channels = 0;
 	int total = 1;
-	bool radar_required = false;
 	int i, j;
 
 	ASSERT_RTNL();
@@ -1293,35 +1292,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
 	if (WARN_ON(hweight32(radar_detect) > 1))
 		return -EINVAL;
 
-	switch (iftype) {
-	case NL80211_IFTYPE_ADHOC:
-	case NL80211_IFTYPE_AP:
-	case NL80211_IFTYPE_AP_VLAN:
-	case NL80211_IFTYPE_MESH_POINT:
-	case NL80211_IFTYPE_P2P_GO:
-	case NL80211_IFTYPE_WDS:
-		/* if the interface could potentially choose a DFS channel,
-		 * then mark DFS as required.
-		 */
-		if (!chan) {
-			if (chanmode != CHAN_MODE_UNDEFINED && radar_detect)
-				radar_required = true;
-			break;
-		}
-		radar_required = !!(chan->flags & IEEE80211_CHAN_RADAR);
-		break;
-	case NL80211_IFTYPE_P2P_CLIENT:
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_P2P_DEVICE:
-	case NL80211_IFTYPE_MONITOR:
-		break;
-	case NUM_NL80211_IFTYPES:
-	case NL80211_IFTYPE_UNSPECIFIED:
-	default:
-		return -EINVAL;
-	}
-
-	if (radar_required && !radar_detect)
+	if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
 		return -EINVAL;
 
 	/* Always allow software iftypes */