cfg80211: Dynamic channel bandwidth changes in AP mode

This extends NL80211_CMD_SET_CHANNEL to allow dynamic channel bandwidth
changes in AP mode (including P2P GO) during a lifetime of the BSS. This
can be used to implement, e.g., HT 20/40 MHz co-existence rules on the
2.4 GHz band.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c98cf08538b9..7eae46ccec01 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2290,6 +2290,10 @@ struct cfg80211_qos_map {
  * @channel_switch: initiate channel-switch procedure (with CSA)
  *
  * @set_qos_map: Set QoS mapping information to the driver
+ *
+ * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the
+ *      given interface This is used e.g. for dynamic HT 20/40 MHz channel width
+ *      changes during the lifetime of the BSS.
  */
 struct cfg80211_ops {
         int     (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -2533,9 +2537,13 @@ struct cfg80211_ops {
         int     (*channel_switch)(struct wiphy *wiphy,
                                   struct net_device *dev,
                                   struct cfg80211_csa_settings *params);
+
         int     (*set_qos_map)(struct wiphy *wiphy,
                                struct net_device *dev,
                                struct cfg80211_qos_map *qos_map);
+
+        int     (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
+                                    struct cfg80211_chan_def *chandef);
 };
 
 /*