mac80211: allow user space to query the current operating frequency

SVN-Revision: 19178

package/mac80211/patches/560-nl80211_get_freq.patch

@@ -0,0 +1,47 @@
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -954,6 +954,8 @@ struct cfg80211_pmksa {
+  *
+  * @set_txq_params: Set TX queue parameters
+  *
++ * @get_channel: Get operating channel
++ *
+  * @set_channel: Set channel
+  *
+  * @scan: Request to do a scan. If returning zero, the scan request is given
+@@ -1079,6 +1081,10 @@ struct cfg80211_ops {
+ 	int	(*set_txq_params)(struct wiphy *wiphy,
+ 				  struct ieee80211_txq_params *params);
+ 
++	int	(*get_channel)(struct wiphy *wiphy,
++			       struct ieee80211_channel **chan,
++			       enum nl80211_channel_type *channel_type);
++
+ 	int	(*set_channel)(struct wiphy *wiphy,
+ 			       struct ieee80211_channel *chan,
+ 			       enum nl80211_channel_type channel_type);
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -427,7 +427,8 @@ static int nl80211_send_wiphy(struct sk_
+ 	struct nlattr *nl_modes;
+ 	struct nlattr *nl_cmds;
+ 	enum ieee80211_band band;
+-	struct ieee80211_channel *chan;
++	struct ieee80211_channel *chan = NULL;
++	enum nl80211_channel_type chan_type;
+ 	struct ieee80211_rate *rate;
+ 	int i;
+ 	u16 ifmodes = dev->wiphy.interface_modes;
+@@ -465,6 +466,12 @@ static int nl80211_send_wiphy(struct sk_
+ 	NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
+ 		   dev->wiphy.max_num_pmkids);
+ 
++	if (dev->ops->get_channel &&
++	    dev->ops->get_channel(&dev->wiphy, &chan, &chan_type) == 0) {
++		NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
++		NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, chan_type);
++	}
++
+ 	nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
+ 	if (!nl_modes)
+ 		goto nla_put_failure;

package/mac80211/patches/570-mac80211_get_freq.patch

@@ -0,0 +1,29 @@
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -1154,6 +1154,18 @@ static int ieee80211_set_txq_params(stru
+ 	return 0;
+ }
+ 
++static int ieee80211_get_oper_channel(struct wiphy *wiphy,
++				 struct ieee80211_channel **chan,
++				 enum nl80211_channel_type *channel_type)
++{
++	struct ieee80211_local *local = wiphy_priv(wiphy);
++
++	*chan = local->oper_channel;
++	*channel_type = local->oper_channel_type;
++
++	return 0;
++}
++
+ static int ieee80211_set_channel(struct wiphy *wiphy,
+ 				 struct ieee80211_channel *chan,
+ 				 enum nl80211_channel_type channel_type)
+@@ -1494,6 +1506,7 @@ struct cfg80211_ops mac80211_config_ops 
+ #endif
+ 	.change_bss = ieee80211_change_bss,
+ 	.set_txq_params = ieee80211_set_txq_params,
++	.get_channel = ieee80211_get_oper_channel,
+ 	.set_channel = ieee80211_set_channel,
+ 	.suspend = ieee80211_suspend,
+ 	.resume = ieee80211_resume,