Add CTRL-EVENT-CHANNEL-SWITCH event to indicate channel changes

This provides information of the channel switch to wpa_supplicant
control interface monitors.

Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/src/common/wpa_ctrl.h b/src/common/wpa_ctrl.h
index d78ea64..df26c7b 100644 (file)
--- a/src/common/wpa_ctrl.h
+++ b/src/common/wpa_ctrl.h
@@ -76,6 +76,8 @@ extern "C" {
 #define WPA_EVENT_SIGNAL_CHANGE "CTRL-EVENT-SIGNAL-CHANGE "
 /** Regulatory domain channel */
 #define WPA_EVENT_REGDOM_CHANGE "CTRL-EVENT-REGDOM-CHANGE "
+/** Channel switch (followed by freq=<MHz> and other channel parameters) */
+#define WPA_EVENT_CHANNEL_SWITCH "CTRL-EVENT-CHANNEL-SWITCH "
 
 /** IP subnet status change notification
  *

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index 057f630..b7a3bc0 100644 (file)
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -3669,6 +3669,15 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
                if (!data || !wpa_s->current_ssid)
                        break;
 
+               wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CHANNEL_SWITCH
+                       "freq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
+                       data->ch_switch.freq,
+                       data->ch_switch.ht_enabled,
+                       data->ch_switch.ch_offset,
+                       channel_width_to_string(data->ch_switch.ch_width),
+                       data->ch_switch.cf1,
+                       data->ch_switch.cf2);
+
                wpa_s->assoc_freq = data->ch_switch.freq;
                wpa_s->current_ssid->frequency = data->ch_switch.freq;