cfg80211: Add channel information to NL80211_CMD_GET_INTERFACE

If the current channel is known, add frequency and channel type to
NL80211_CMD_GET_INTERFACE.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5e26123..bcf6f70 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1501,6 +1501,19 @@
 		    rdev->devlist_generation ^
 			(cfg80211_rdev_list_generation << 2));
 
+	if (rdev->ops->get_channel) {
+		struct ieee80211_channel *chan;
+		enum nl80211_channel_type channel_type;
+
+		chan = rdev->ops->get_channel(&rdev->wiphy, &channel_type);
+		if (chan) {
+			NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ,
+				    chan->center_freq);
+			NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+				    channel_type);
+		}
+	}
+
 	return genlmsg_end(msg, hdr);
 
  nla_put_failure:
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 3c24eb9..6a6181a 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -821,6 +821,7 @@
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 	struct ieee80211_channel *chan;
+	enum nl80211_channel_type channel_type;
 
 	switch (wdev->iftype) {
 	case NL80211_IFTYPE_STATION:
@@ -831,7 +832,7 @@
 		if (!rdev->ops->get_channel)
 			return -EINVAL;
 
-		chan = rdev->ops->get_channel(wdev->wiphy);
+		chan = rdev->ops->get_channel(wdev->wiphy, &channel_type);
 		if (!chan)
 			return -EINVAL;
 		freq->m = chan->center_freq;