1 files changed, 62 insertions, 0 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 531bb67..8ac3d26 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);