5 files changed, 153 insertions, 46 deletions

diff --git a/net/wireless/core.c b/net/wireless/core.c
index dd7f222919fe..17fe39049740 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 f6c53f5807f4..6acd483a61f8 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 531bb67cf502..8ac3d26014a8 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 69787b621365..e65a3c38c52f 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 58df98f10990..eb8b8ed16155 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;
 }