cfg80211: add channel switch notify event
The firmware may decide to switch channels while already beaconing, e.g.
in response to a cfg80211 connect request on a different vif. Add this
event to notify userspace when an AP or GO interface has successfully
migrated to a new channel, so it can update its configuration
accordingly.
Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index c6d2632..1335084 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -548,6 +548,11 @@
* @NL80211_CMD_SET_NOACK_MAP: sets a bitmap for the individual TIDs whether
* No Acknowledgement Policy should be applied.
*
+ * @NL80211_CMD_CH_SWITCH_NOTIFY: An AP or GO may decide to switch channels
+ * independently of the userspace SME, send this event indicating
+ * %NL80211_ATTR_IFINDEX is now on %NL80211_ATTR_WIPHY_FREQ with
+ * %NL80211_ATTR_WIPHY_CHANNEL_TYPE.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -689,6 +694,8 @@
NL80211_CMD_SET_NOACK_MAP,
+ NL80211_CMD_CH_SWITCH_NOTIFY,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 1fd1c4a..a587867 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -3355,6 +3355,17 @@
enum nl80211_channel_type channel_type);
/*
+ * cfg80211_ch_switch_notify - update wdev channel and notify userspace
+ * @dev: the device which switched channels
+ * @freq: new channel frequency (in MHz)
+ * @type: channel type
+ *
+ * Acquires wdev_lock, so must only be called from sleepable driver context!
+ */
+void cfg80211_ch_switch_notify(struct net_device *dev, int freq,
+ enum nl80211_channel_type type);
+
+/*
* cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units)
* @rate: given rate_info to calculate bitrate from
*