wlan-ap/feeds/wifi-ax/hostapd/patches/f00-012-hapd-ubus-channel-switch-event.patch

--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -19,7 +19,7 @@
 #include "dfs.h"
 #include "beacon.h"
 #include "eloop.h"
-
+#include "ubus.h"
 
 static int dfs_get_used_n_chans(struct hostapd_iface *iface, int *seg1)
 {
@@ -1207,6 +1207,11 @@ static int hostapd_dfs_start_channel_swi
 			break;
 	}
 
+	if (!err) {
+		wpa_printf(MSG_DEBUG, "Reporting DFS event to ubus");
+		hostapd_ubus_handle_channel_switch_event(iface, HOSTAPD_UBUS_DFS_SWITCH,  channel->freq);
+	}
+
 	if (err) {
 		wpa_printf(MSG_WARNING, "DFS failed to schedule CSA (%d) - trying fallback",
 			   err);
--- a/src/ap/ubus.c
+++ b/src/ap/ubus.c
@@ -29,6 +29,8 @@ static int ctx_ref;
 static char** bss_lst = NULL;
 static size_t bss_nr = 0;
 
+static LIST_HEAD(chan_events);
+
 static inline struct hapd_interfaces *get_hapd_interfaces_from_object(struct ubus_object *obj)
 {
 	return container_of(obj, struct hapd_interfaces, ubus);
@@ -714,6 +716,42 @@ static int hostapd_sessions(struct ubus_
 	return 0;
 }
 
+static int hostapd_get_chan_switch_events(struct ubus_context *ctx,
+					  struct ubus_object *obj,
+					  struct ubus_request_data *req,
+					  const char *method,
+					  struct blob_attr *msg)
+{
+	void *a = NULL;
+	void *t = NULL;
+	struct hostapd_chan_event_list *entry, *tmp;
+
+	blob_buf_init(&b_ev, 0);
+	a = blobmsg_open_table(&b_ev, "chan_switch_event");
+	list_for_each_entry(entry, &chan_events, list) {
+		t = blobmsg_open_table(&b_ev, "event");
+		blobmsg_add_u32(&b_ev, "radio_name", entry->records.band);
+		blobmsg_add_u32(&b_ev, "reason", entry->records.reason);
+		blobmsg_add_u64(&b_ev, "timestamp", entry->records.ts);
+		blobmsg_add_u32(&b_ev, "frequency", entry->records.freq);
+		blobmsg_close_table(&b_ev, t);
+	}
+
+	blobmsg_close_table(&b_ev, a);
+	ubus_send_reply(ctx, req, b_ev.head);
+
+	/*delete list*/
+
+	if (!list_empty(&chan_events)) {
+		list_for_each_entry_safe(entry, tmp, &chan_events, list) {
+			list_del(&entry->list);
+			free(entry);
+		}
+	}
+
+	return 0;
+}
+
 static int
 hostapd_switch_chan(struct ubus_context *ctx, struct ubus_object *obj,
 		    struct ubus_request_data *req, const char *method,
@@ -751,6 +789,9 @@ hostapd_switch_chan(struct ubus_context
 		if (hostapd_switch_channel(hapd->iface->bss[i], &css) != 0)
 			return UBUS_STATUS_NOT_SUPPORTED;
 	}
+
+	hostapd_ubus_handle_channel_switch_event(hapd->iface, HOSTAPD_UBUS_HIGH_INTERFERENCE, css.freq_params.freq);
+
 	return UBUS_STATUS_OK;
 #undef SET_CSA_SETTING
 }
@@ -1446,6 +1487,7 @@ static const struct ubus_method daemon_m
 	UBUS_METHOD("config_add", hostapd_config_add, config_add_policy),
 	UBUS_METHOD("config_remove", hostapd_config_remove, config_remove_policy),
 	UBUS_METHOD_NOARG("get_bss_list", hostapd_get_bss_list),
+	UBUS_METHOD_NOARG("get_chan_switch_events", hostapd_get_chan_switch_events),
 };
 
 static struct ubus_object_type daemon_object_type =
@@ -1509,6 +1551,26 @@ ubus_event_cb(struct ubus_notify_request
 	ureq->resp = ret;
 }
 
+void hostapd_ubus_handle_channel_switch_event(struct hostapd_iface *iface, int reason,
+					      int freq)
+{
+	struct hostapd_chan_event_list *rec = NULL;
+	struct timespec ts;
+	uint64_t timestamp = 0;
+
+	clock_gettime(CLOCK_REALTIME, &ts);
+	timestamp = get_time_in_ms(&ts);
+
+	rec = os_zalloc(sizeof(struct hostapd_chan_event_list));
+
+	rec->records.reason = reason;
+	rec->records.band = iface->freq;
+	rec->records.ts = timestamp;
+	rec->records.freq = freq;
+
+	list_add_tail(&rec->list, &chan_events);
+}
+
 int hostapd_ubus_handle_rt_event(struct hostapd_data *hapd,
 				 struct hostapd_ubus_request *req)
 {
--- a/src/ap/ubus.h
+++ b/src/ap/ubus.h
@@ -17,9 +17,15 @@ enum hostapd_ubus_event_type {
 	HOSTAPD_UBUS_DEAUTH_REQ,
 	HOSTAPD_UBUS_FDATA_REQ,
 	HOSTAPD_UBUS_IP_REQ,
+	HOSTAPD_UBUS_CHAN_SWITCH,
 	HOSTAPD_UBUS_TYPE_MAX
 };
 
+enum hostapd_ubus_chan_event_reason {
+	HOSTAPD_UBUS_DFS_SWITCH,
+	HOSTAPD_UBUS_HIGH_INTERFERENCE
+};
+
 struct hostapd_ubus_request {
 	enum hostapd_ubus_event_type type;
 	const struct ieee80211_mgmt *mgmt_frame;
@@ -40,6 +46,7 @@ struct rrm_measurement_beacon_report;
 
 #include <libubox/avl.h>
 #include <libubus.h>
+#include <libubox/list.h>
 
 struct hostapd_ubus_bss {
 	struct ubus_object obj;
@@ -121,11 +128,24 @@ struct hostapd_event_avl_rec {
 	struct avl_node avl;
 };
 
+struct channel_switch_event {
+	int band; /* Radio name*/
+	uint8_t reason;
+	uint64_t ts;
+	uint32_t freq;
+};
+
+struct hostapd_chan_event_list {
+	struct channel_switch_event records;
+	struct list_head list;
+};
+
 void hostapd_ubus_add_iface(struct hostapd_iface *iface);
 void hostapd_ubus_free_iface(struct hostapd_iface *iface);
 void hostapd_ubus_add_bss(struct hostapd_data *hapd);
 void hostapd_ubus_free_bss(struct hostapd_data *hapd);
-
+void hostapd_ubus_handle_channel_switch_event(struct hostapd_iface *iface,
+					      int reason, int channel);
 int hostapd_ubus_handle_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req);
 int hostapd_ubus_handle_rt_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req);
 void hostapd_ubus_notify(struct hostapd_data *hapd, const char *type, const u8 *mac);
@@ -157,6 +177,11 @@ static inline void hostapd_ubus_free_bss
 {
 }
 
+static inline void hostapd_ubus_handle_channel_switch_event(struct hostapd_iface *iface,
+							    int reason, int channel)
+{
+}
+
 static inline int hostapd_ubus_handle_event(struct hostapd_data *hapd, struct hostapd_ubus_request *req)
 {
 	return 0;