nl80211: Indicate channel list change events

Listen to regulatory event messages from kernel and convert them to
internal driver event notifications indicated that the channel list
may have changed.

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 8e527a5..352ecd5 100644 (file)
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -1305,6 +1305,16 @@ static int process_event(struct nl_msg *msg, void *arg)
        case NL80211_CMD_NOTIFY_CQM:
                nl80211_cqm_event(drv, tb);
                break;
+       case NL80211_CMD_REG_CHANGE:
+               wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
+               wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
+                                    NULL);
+               break;
+       case NL80211_CMD_REG_BEACON_HINT:
+               wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
+               wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
+                                    NULL);
+               break;
        default:
                wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
                           "(cmd=%d)", gnlh->cmd);
@@ -1578,6 +1588,16 @@ static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
                goto err4;
        }
 
+       ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
+       if (ret >= 0)
+               ret = nl_socket_add_membership(drv->nl_handle_event, ret);
+       if (ret < 0) {
+               wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
+                          "membership for regulatory events: %d (%s)",
+                          ret, strerror(-ret));
+               /* Continue without regulatory events */
+       }
+
        eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
                                 wpa_driver_nl80211_event_receive, drv,
                                 drv->nl_handle_event);