---

yaml
---
r: 122273
b: refs/heads/master
c: 3f2355c
h: refs/heads/master
i:
  122271: 3d9cb0d
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 88dc1c3f7f9058cd5ceae1e4b53453484c7b0364
+refs/heads/master: 3f2355cb9111ac04e7ae06a4d7044da2ae813863

trunk/include/linux/ieee80211.h

@@ -1042,6 +1042,68 @@ enum ieee80211_spectrum_mgmt_actioncode {
 	WLAN_ACTION_SPCT_CHL_SWITCH = 4,
 };
 
+/*
+ * IEEE 802.11-2007 7.3.2.9 Country information element
+ *
+ * Minimum length is 8 octets, ie len must be evenly
+ * divisible by 2
+ */
+
+/* Although the spec says 8 I'm seeing 6 in practice */
+#define IEEE80211_COUNTRY_IE_MIN_LEN	6
+
+/*
+ * For regulatory extension stuff see IEEE 802.11-2007
+ * Annex I (page 1141) and Annex J (page 1147). Also
+ * review 7.3.2.9.
+ *
+ * When dot11RegulatoryClassesRequired is true and the
+ * first_channel/reg_extension_id is >= 201 then the IE
+ * compromises of the 'ext' struct represented below:
+ *
+ *  - Regulatory extension ID - when generating IE this just needs
+ *    to be monotonically increasing for each triplet passed in
+ *    the IE
+ *  - Regulatory class - index into set of rules
+ *  - Coverage class - index into air propagation time (Table 7-27),
+ *    in microseconds, you can compute the air propagation time from
+ *    the index by multiplying by 3, so index 10 yields a propagation
+ *    of 10 us. Valid values are 0-31, values 32-255 are not defined
+ *    yet. A value of 0 inicates air propagation of <= 1 us.
+ *
+ *  See also Table I.2 for Emission limit sets and table
+ *  I.3 for Behavior limit sets. Table J.1 indicates how to map
+ *  a reg_class to an emission limit set and behavior limit set.
+ */
+#define IEEE80211_COUNTRY_EXTENSION_ID 201
+
+/*
+ *  Channels numbers in the IE must be monotonically increasing
+ *  if dot11RegulatoryClassesRequired is not true.
+ *
+ *  If dot11RegulatoryClassesRequired is true consecutive
+ *  subband triplets following a regulatory triplet shall
+ *  have monotonically increasing first_channel number fields.
+ *
+ *  Channel numbers shall not overlap.
+ *
+ *  Note that max_power is signed.
+ */
+struct ieee80211_country_ie_triplet {
+	union {
+		struct {
+			u8 first_channel;
+			u8 num_channels;
+			s8 max_power;
+		} __attribute__ ((packed)) chans;
+		struct {
+			u8 reg_extension_id;
+			u8 reg_class;
+			u8 coverage_class;
+		} __attribute__ ((packed)) ext;
+	};
+} __attribute__ ((packed));
+
 /* BACK action code */
 enum ieee80211_back_actioncode {
 	WLAN_ACTION_ADDBA_REQ = 0,

trunk/include/net/wireless.h

@@ -373,4 +373,19 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
  * for a regulatory domain structure for the respective country.
  */
 extern void regulatory_hint(struct wiphy *wiphy, const char *alpha2);
+
+/**
+ * regulatory_hint_11d - hints a country IE as a regulatory domain
+ * @wiphy: the wireless device giving the hint (used only for reporting
+ *	conflicts)
+ * @country_ie: pointer to the country IE
+ * @country_ie_len: length of the country IE
+ *
+ * We will intersect the rd with the what CRDA tells us should apply
+ * for the alpha2 this country IE belongs to, this prevents APs from
+ * sending us incorrect or outdated information against a country.
+ */
+extern void regulatory_hint_11d(struct wiphy *wiphy,
+				u8 *country_ie,
+				u8 country_ie_len);
 #endif /* __NET_WIRELESS_H */

trunk/net/mac80211/mlme.c

@@ -1736,6 +1736,13 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 					       ap_ht_cap_flags);
 	}
 
+	if (elems.country_elem) {
+		/* Note we are only reviewing this on beacons
+		 * for the BSSID we are associated to */
+		regulatory_hint_11d(local->hw.wiphy,
+			elems.country_elem, elems.country_elem_len);
+	}
+
 	ieee80211_bss_info_change_notify(sdata, changed);
 }
 

trunk/net/wireless/Kconfig

@@ -1,6 +1,15 @@
 config CFG80211
         tristate "Improved wireless configuration API"
 
+config CFG80211_REG_DEBUG
+	bool "cfg80211 regulatory debugging"
+	depends on CFG80211
+	default n
+	---help---
+	  You can enable this if you want to debug regulatory changes.
+
+	  If unsure, say N.
+
 config NL80211
 	bool "nl80211 new netlink interface support"
 	depends on CFG80211
@@ -40,6 +49,8 @@ config WIRELESS_OLD_REGULATORY
 	  ieee80211_regdom module parameter. This is being phased out and you
 	  should stop using them ASAP.
 
+	  Note: You will need CRDA if you want 802.11d support
+
 	  Say Y unless you have installed a new userspace application.
 	  Also say Y if have one currently depending on the ieee80211_regdom
 	  module parameter and cannot port it to use the new userspace

trunk/net/wireless/core.c

@@ -19,7 +19,6 @@
 #include "nl80211.h"
 #include "core.h"
 #include "sysfs.h"
-#include "reg.h"
 
 /* name for sysfs, %d is appended */
 #define PHY_NAME "phy"
@@ -348,6 +347,10 @@ void wiphy_unregister(struct wiphy *wiphy)
 	/* unlock again before freeing */
 	mutex_unlock(&drv->mtx);
 
+	/* If this device got a regulatory hint tell core its
+	 * free to listen now to a new shiny device regulatory hint */
+	reg_device_remove(wiphy);
+
 	list_del(&drv->list);
 	device_del(&drv->wiphy.dev);
 	debugfs_remove(drv->wiphy.debugfsdir);

trunk/net/wireless/core.h

@@ -11,6 +11,7 @@
 #include <net/genetlink.h>
 #include <net/wireless.h>
 #include <net/cfg80211.h>
+#include "reg.h"
 
 struct cfg80211_registered_device {
 	struct cfg80211_ops *ops;
@@ -21,6 +22,18 @@ struct cfg80211_registered_device {
 	 * any call is in progress */
 	struct mutex mtx;
 
+	/* ISO / IEC 3166 alpha2 for which this device is receiving
+	 * country IEs on, this can help disregard country IEs from APs
+	 * on the same alpha2 quickly. The alpha2 may differ from
+	 * cfg80211_regdomain's alpha2 when an intersection has occurred.
+	 * If the AP is reconfigured this can also be used to tell us if
+	 * the country on the country IE changed. */
+	char country_ie_alpha2[2];
+
+	/* If a Country IE has been received this tells us the environment
+	 * which its telling us its in. This defaults to ENVIRON_ANY */
+	enum environment_cap env;
+
 	/* wiphy index, internal only */
 	int idx;
 

trunk/net/wireless/nl80211.c

@@ -1760,7 +1760,7 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 		return -EINVAL;
 #endif
 	mutex_lock(&cfg80211_drv_mutex);
-	r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data);
+	r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, 0, ENVIRON_ANY);
 	mutex_unlock(&cfg80211_drv_mutex);
 	return r;
 }