Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

5 files changed, 153 insertions, 46 deletions

diff --git a/net/wireless/core.c b/net/wireless/core.c
index dd7f222919f..17fe3904974 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -350,7 +350,7 @@ int wiphy_register(struct wiphy *wiphy)
 	mutex_lock(&cfg80211_mutex);
 
 	/* set up regulatory info */
-	wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
+	wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE);
 
 	res = device_add(&drv->wiphy.dev);
 	if (res)
@@ -365,6 +365,17 @@ int wiphy_register(struct wiphy *wiphy)
 	if (IS_ERR(drv->wiphy.debugfsdir))
 		drv->wiphy.debugfsdir = NULL;
 
+	if (wiphy->custom_regulatory) {
+		struct regulatory_request request;
+
+		request.wiphy_idx = get_wiphy_idx(wiphy);
+		request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+		request.alpha2[0] = '9';
+		request.alpha2[1] = '9';
+
+		nl80211_send_reg_change_event(&request);
+	}
+
 	res = 0;
 out_unlock:
 	mutex_unlock(&cfg80211_mutex);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index f6c53f5807f..6acd483a61f 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -136,7 +136,8 @@ extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv,
 			       char *newname);
 
 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
-void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby);
+void wiphy_update_regulatory(struct wiphy *wiphy,
+			     enum nl80211_reg_initiator setby);
 
 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 531bb67cf50..8ac3d26014a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2739,6 +2739,9 @@ static struct genl_multicast_group nl80211_config_mcgrp = {
 static struct genl_multicast_group nl80211_scan_mcgrp = {
 	.name = "scan",
 };
+static struct genl_multicast_group nl80211_regulatory_mcgrp = {
+	.name = "regulatory",
+};
 
 /* notification functions */
 
@@ -2818,6 +2821,61 @@ void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
 	genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
 }
 
+/*
+ * This can happen on global regulatory changes or device specific settings
+ * based on custom world regulatory domains.
+ */
+void nl80211_send_reg_change_event(struct regulatory_request *request)
+{
+	struct sk_buff *msg;
+	void *hdr;
+
+	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+	if (!msg)
+		return;
+
+	hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
+	if (!hdr) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	/* Userspace can always count this one always being set */
+	NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
+
+	if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_WORLD);
+	else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_CUSTOM_WORLD);
+	else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
+		 request->intersect)
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_INTERSECTION);
+	else {
+		NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
+			   NL80211_REGDOM_TYPE_COUNTRY);
+		NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
+	}
+
+	if (wiphy_idx_valid(request->wiphy_idx))
+		NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
+
+	if (genlmsg_end(msg, hdr) < 0) {
+		nlmsg_free(msg);
+		return;
+	}
+
+	genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
+
+	return;
+
+nla_put_failure:
+	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
+}
+
 /* initialisation/exit functions */
 
 int nl80211_init(void)
@@ -2842,6 +2900,10 @@ int nl80211_init(void)
 	if (err)
 		goto err_out;
 
+	err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
+	if (err)
+		goto err_out;
+
 	return 0;
  err_out:
 	genl_unregister_family(&nl80211_fam);
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 69787b62136..e65a3c38c52 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -11,6 +11,7 @@ extern void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
 				   struct net_device *netdev);
 extern void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
 				      struct net_device *netdev);
+extern void nl80211_send_reg_change_event(struct regulatory_request *request);
 #else
 static inline int nl80211_init(void)
 {
@@ -31,6 +32,10 @@ static inline void nl80211_send_scan_aborted(
 					struct cfg80211_registered_device *rdev,
 					struct net_device *netdev)
 {}
+static inline void
+nl80211_send_reg_change_event(struct regulatory_request *request)
+{
+}
 #endif /* CONFIG_NL80211 */
 
 #endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 58df98f1099..eb8b8ed1615 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -41,6 +41,7 @@
 #include <net/cfg80211.h>
 #include "core.h"
 #include "reg.h"
+#include "nl80211.h"
 
 /* Receipt of information from last regulatory request */
 static struct regulatory_request *last_request;
@@ -86,20 +87,31 @@ struct reg_beacon {
 
 /* We keep a static world regulatory domain in case of the absence of CRDA */
 static const struct ieee80211_regdomain world_regdom = {
-	.n_reg_rules = 3,
+	.n_reg_rules = 5,
 	.alpha2 =  "00",
 	.reg_rules = {
 		/* IEEE 802.11b/g, channels 1..11 */
 		REG_RULE(2412-10, 2462+10, 40, 6, 20, 0),
-		/* IEEE 802.11a, channel 36..48 */
-		REG_RULE(5180-10, 5240+10, 40, 6, 23,
+		/* IEEE 802.11b/g, channels 12..13. No HT40
+		 * channel fits here. */
+		REG_RULE(2467-10, 2472+10, 20, 6, 20,
 			NL80211_RRF_PASSIVE_SCAN |
 			NL80211_RRF_NO_IBSS),
+		/* IEEE 802.11 channel 14 - Only JP enables
+		 * this and for 802.11b only */
+		REG_RULE(2484-10, 2484+10, 20, 6, 20,
+			NL80211_RRF_PASSIVE_SCAN |
+			NL80211_RRF_NO_IBSS |
+			NL80211_RRF_NO_OFDM),
+		/* IEEE 802.11a, channel 36..48 */
+		REG_RULE(5180-10, 5240+10, 40, 6, 20,
+                        NL80211_RRF_PASSIVE_SCAN |
+                        NL80211_RRF_NO_IBSS),
 
 		/* NB: 5260 MHz - 5700 MHz requies DFS */
 
 		/* IEEE 802.11a, channel 149..165 */
-		REG_RULE(5745-10, 5825+10, 40, 6, 23,
+		REG_RULE(5745-10, 5825+10, 40, 6, 20,
 			NL80211_RRF_PASSIVE_SCAN |
 			NL80211_RRF_NO_IBSS),
 	}
@@ -846,8 +858,8 @@ static int freq_reg_info_regd(struct wiphy *wiphy,
 	 * Follow the driver's regulatory domain, if present, unless a country
 	 * IE has been processed or a user wants to help complaince further
 	 */
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE &&
-	    last_request->initiator != REGDOM_SET_BY_USER &&
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+	    last_request->initiator != NL80211_REGDOM_SET_BY_USER &&
 	    wiphy->regd)
 		regd = wiphy->regd;
 
@@ -932,7 +944,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 		 * http://tinyurl.com/11d-clarification
 		 */
 		if (r == -ERANGE &&
-		    last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
+		    last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 #ifdef CONFIG_CFG80211_REG_DEBUG
 			printk(KERN_DEBUG "cfg80211: Leaving channel %d MHz "
 				"intact on %s - no rule found in band on "
@@ -945,7 +958,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 		 * for the band so we respect its band definitions
 		 */
 #ifdef CONFIG_CFG80211_REG_DEBUG
-			if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+			if (last_request->initiator ==
+			    NL80211_REGDOM_SET_BY_COUNTRY_IE)
 				printk(KERN_DEBUG "cfg80211: Disabling "
 					"channel %d MHz on %s due to "
 					"Country IE\n",
@@ -959,7 +973,7 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
 
 	power_rule = &reg_rule->power_rule;
 
-	if (last_request->initiator == REGDOM_SET_BY_DRIVER &&
+	if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
 	    request_wiphy && request_wiphy == wiphy &&
 	    request_wiphy->strict_regulatory) {
 		/*
@@ -1000,11 +1014,12 @@ static void handle_band(struct wiphy *wiphy, enum ieee80211_band band)
 		handle_channel(wiphy, band, i);
 }
 
-static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
+static bool ignore_reg_update(struct wiphy *wiphy,
+			      enum nl80211_reg_initiator initiator)
 {
 	if (!last_request)
 		return true;
-	if (setby == REGDOM_SET_BY_CORE &&
+	if (initiator == NL80211_REGDOM_SET_BY_CORE &&
 		  wiphy->custom_regulatory)
 		return true;
 	/*
@@ -1017,12 +1032,12 @@ static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
 	return false;
 }
 
-static void update_all_wiphy_regulatory(enum reg_set_by setby)
+static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
 {
 	struct cfg80211_registered_device *drv;
 
 	list_for_each_entry(drv, &cfg80211_drv_list, list)
-		wiphy_update_regulatory(&drv->wiphy, setby);
+		wiphy_update_regulatory(&drv->wiphy, initiator);
 }
 
 static void handle_reg_beacon(struct wiphy *wiphy,
@@ -1113,7 +1128,7 @@ static bool reg_is_world_roaming(struct wiphy *wiphy)
 	if (is_world_regdom(cfg80211_regdomain->alpha2) ||
 	    (wiphy->regd && is_world_regdom(wiphy->regd->alpha2)))
 		return true;
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE &&
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
 	    wiphy->custom_regulatory)
 		return true;
 	return false;
@@ -1127,11 +1142,12 @@ static void reg_process_beacons(struct wiphy *wiphy)
 	wiphy_update_beacon_reg(wiphy);
 }
 
-void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby)
+void wiphy_update_regulatory(struct wiphy *wiphy,
+			     enum nl80211_reg_initiator initiator)
 {
 	enum ieee80211_band band;
 
-	if (ignore_reg_update(wiphy, setby))
+	if (ignore_reg_update(wiphy, initiator))
 		goto out;
 	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 		if (wiphy->bands[band])
@@ -1244,17 +1260,16 @@ static int ignore_request(struct wiphy *wiphy,
 		return 0;
 
 	switch (pending_request->initiator) {
-	case REGDOM_SET_BY_INIT:
+	case NL80211_REGDOM_SET_BY_CORE:
 		return -EINVAL;
-	case REGDOM_SET_BY_CORE:
-		return -EINVAL;
-	case REGDOM_SET_BY_COUNTRY_IE:
+	case NL80211_REGDOM_SET_BY_COUNTRY_IE:
 
 		last_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
 
 		if (unlikely(!is_an_alpha2(pending_request->alpha2)))
 			return -EINVAL;
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
+		if (last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 			if (last_wiphy != wiphy) {
 				/*
 				 * Two cards with two APs claiming different
@@ -1275,8 +1290,8 @@ static int ignore_request(struct wiphy *wiphy,
 			return -EALREADY;
 		}
 		return REG_INTERSECT;
-	case REGDOM_SET_BY_DRIVER:
-		if (last_request->initiator == REGDOM_SET_BY_CORE) {
+	case NL80211_REGDOM_SET_BY_DRIVER:
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE) {
 			if (is_old_static_regdom(cfg80211_regdomain))
 				return 0;
 			if (regdom_changes(pending_request->alpha2))
@@ -1289,28 +1304,28 @@ static int ignore_request(struct wiphy *wiphy,
 		 * back in or if you add a new device for which the previously
 		 * loaded card also agrees on the regulatory domain.
 		 */
-		if (last_request->initiator == REGDOM_SET_BY_DRIVER &&
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
 		    !regdom_changes(pending_request->alpha2))
 			return -EALREADY;
 
 		return REG_INTERSECT;
-	case REGDOM_SET_BY_USER:
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+	case NL80211_REGDOM_SET_BY_USER:
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
 			return REG_INTERSECT;
 		/*
 		 * If the user knows better the user should set the regdom
 		 * to their country before the IE is picked up
 		 */
-		if (last_request->initiator == REGDOM_SET_BY_USER &&
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_USER &&
 			  last_request->intersect)
 			return -EOPNOTSUPP;
 		/*
 		 * Process user requests only after previous user/driver/core
 		 * requests have been processed
 		 */
-		if (last_request->initiator == REGDOM_SET_BY_CORE ||
-		    last_request->initiator == REGDOM_SET_BY_DRIVER ||
-		    last_request->initiator == REGDOM_SET_BY_USER) {
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_CORE ||
+		    last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER ||
+		    last_request->initiator == NL80211_REGDOM_SET_BY_USER) {
 			if (regdom_changes(last_request->alpha2))
 				return -EAGAIN;
 		}
@@ -1350,7 +1365,8 @@ static int __regulatory_hint(struct wiphy *wiphy,
 	r = ignore_request(wiphy, pending_request);
 
 	if (r == REG_INTERSECT) {
-		if (pending_request->initiator == REGDOM_SET_BY_DRIVER) {
+		if (pending_request->initiator ==
+		    NL80211_REGDOM_SET_BY_DRIVER) {
 			r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain);
 			if (r) {
 				kfree(pending_request);
@@ -1365,7 +1381,8 @@ static int __regulatory_hint(struct wiphy *wiphy,
 		 * wiphy
 		 */
 		if (r == -EALREADY &&
-		    pending_request->initiator == REGDOM_SET_BY_DRIVER) {
+		    pending_request->initiator ==
+		    NL80211_REGDOM_SET_BY_DRIVER) {
 			r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain);
 			if (r) {
 				kfree(pending_request);
@@ -1387,8 +1404,16 @@ new_request:
 	pending_request = NULL;
 
 	/* When r == REG_INTERSECT we do need to call CRDA */
-	if (r < 0)
+	if (r < 0) {
+		/*
+		 * Since CRDA will not be called in this case as we already
+		 * have applied the requested regulatory domain before we just
+		 * inform userspace we have processed the request
+		 */
+		if (r == -EALREADY)
+			nl80211_send_reg_change_event(last_request);
 		return r;
+	}
 
 	/*
 	 * Note: When CONFIG_WIRELESS_OLD_REGULATORY is enabled
@@ -1416,7 +1441,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
 	if (wiphy_idx_valid(reg_request->wiphy_idx))
 		wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx);
 
-	if (reg_request->initiator == REGDOM_SET_BY_DRIVER &&
+	if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
 	    !wiphy) {
 		kfree(reg_request);
 		goto out;
@@ -1430,7 +1455,7 @@ out:
 	mutex_unlock(&cfg80211_mutex);
 }
 
-/* Processes regulatory hints, this is all the REGDOM_SET_BY_* */
+/* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* */
 static void reg_process_pending_hints(void)
 	{
 	struct regulatory_request *reg_request;
@@ -1514,7 +1539,7 @@ static int regulatory_hint_core(const char *alpha2)
 
 	request->alpha2[0] = alpha2[0];
 	request->alpha2[1] = alpha2[1];
-	request->initiator = REGDOM_SET_BY_CORE;
+	request->initiator = NL80211_REGDOM_SET_BY_CORE;
 
 	queue_regulatory_request(request);
 
@@ -1535,7 +1560,7 @@ int regulatory_hint_user(const char *alpha2)
 	request->wiphy_idx = WIPHY_IDX_STALE;
 	request->alpha2[0] = alpha2[0];
 	request->alpha2[1] = alpha2[1];
-	request->initiator = REGDOM_SET_BY_USER,
+	request->initiator = NL80211_REGDOM_SET_BY_USER,
 
 	queue_regulatory_request(request);
 
@@ -1561,7 +1586,7 @@ int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
 
 	request->alpha2[0] = alpha2[0];
 	request->alpha2[1] = alpha2[1];
-	request->initiator = REGDOM_SET_BY_DRIVER;
+	request->initiator = NL80211_REGDOM_SET_BY_DRIVER;
 
 	queue_regulatory_request(request);
 
@@ -1710,7 +1735,7 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 	request->wiphy_idx = get_wiphy_idx(wiphy);
 	request->alpha2[0] = rd->alpha2[0];
 	request->alpha2[1] = rd->alpha2[1];
-	request->initiator = REGDOM_SET_BY_COUNTRY_IE;
+	request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE;
 	request->country_ie_checksum = checksum;
 	request->country_ie_env = env;
 
@@ -1818,7 +1843,8 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
 
 	if (is_intersected_alpha2(rd->alpha2)) {
 
-		if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
+		if (last_request->initiator ==
+		    NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 			struct cfg80211_registered_device *drv;
 			drv = cfg80211_drv_by_wiphy_idx(
 				last_request->wiphy_idx);
@@ -1910,7 +1936,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	 * rd is non static (it means CRDA was present and was used last)
 	 * and the pending request came in from a country IE
 	 */
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) {
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 		/*
 		 * If someone else asked us to change the rd lets only bother
 		 * checking if the alpha2 changes if CRDA was already called
@@ -1942,7 +1968,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 	if (!last_request->intersect) {
 		int r;
 
-		if (last_request->initiator != REGDOM_SET_BY_DRIVER) {
+		if (last_request->initiator != NL80211_REGDOM_SET_BY_DRIVER) {
 			reset_regdomains();
 			cfg80211_regdomain = rd;
 			return 0;
@@ -1966,7 +1992,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 
 	/* Intersection requires a bit more work */
 
-	if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) {
+	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
 
 		intersected_rd = regdom_intersect(rd, cfg80211_regdomain);
 		if (!intersected_rd)
@@ -1977,7 +2003,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
 		 * However if a driver requested this specific regulatory
 		 * domain we keep it for its private use
 		 */
-		if (last_request->initiator == REGDOM_SET_BY_DRIVER)
+		if (last_request->initiator == NL80211_REGDOM_SET_BY_DRIVER)
 			request_wiphy->regd = rd;
 		else
 			kfree(rd);
@@ -2067,6 +2093,8 @@ int set_regdom(const struct ieee80211_regdomain *rd)
 
 	print_regdomain(cfg80211_regdomain);
 
+	nl80211_send_reg_change_event(last_request);
+
 	return r;
 }