1 files changed, 9 insertions, 2 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 7d10c0182f53..b44a2e5321a3 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -966,7 +966,11 @@ struct cfg80211_pmksa {
  *
  * @set_txq_params: Set TX queue parameters
  *
- * @set_channel: Set channel
+ * @set_channel: Set channel for a given wireless interface. Some devices
+ *      may support multi-channel operation (by channel hopping) so cfg80211
+ *      doesn't verify much. Note, however, that the passed netdev may be
+ *      %NULL as well if the user requested changing the channel for the
+ *      device itself, or for a monitor interface.
  *
  * @scan: Request to do a scan. If returning zero, the scan request is given
  *      the driver, and will be valid until passed to cfg80211_scan_done().
@@ -1095,7 +1099,7 @@ struct cfg80211_ops {
         int     (*set_txq_params)(struct wiphy *wiphy,
                                   struct ieee80211_txq_params *params);
 
-        int     (*set_channel)(struct wiphy *wiphy,
+        int     (*set_channel)(struct wiphy *wiphy, struct net_device *dev,
                                struct ieee80211_channel *chan,
                                enum nl80211_channel_type channel_type);
 
@@ -1461,6 +1465,8 @@ struct cfg80211_cached_keys;
  * @list: (private) Used to collect the interfaces
  * @netdev: (private) Used to reference back to the netdev
  * @current_bss: (private) Used by the internal configuration code
+ * @channel: (private) Used by the internal configuration code to track
+ *      user-set AP, monitor and WDS channels for wireless extensions
  * @bssid: (private) Used by the internal configuration code
  * @ssid: (private) Used by the internal configuration code
  * @ssid_len: (private) Used by the internal configuration code
@@ -1507,6 +1513,7 @@ struct wireless_dev {
         struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES];
         struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES];
         struct cfg80211_internal_bss *current_bss; /* associated / joined */
+        struct ieee80211_channel *channel;
 
         bool ps;
         int ps_timeout;