[nrf fromtree] Bluetooth: host: Cancel limited adv timeout when advertising stopped

Advertising might stop when:
- it was stopped by application
- device connected to a peer
- extended advertising reached stop condition
  defined in BT_LE_EXT_ADV_START_PARAM - this is handled in ll

Signed-off-by: Michał Narajowski <[email protected]>
(cherry picked from commit a9db9a3)
Signed-off-by: Martin Tverdal <[email protected]>

Author: Michał Narajowski

subsys/bluetooth/host/adv.c

@@ -997,6 +997,11 @@ int bt_le_adv_start_ext(struct bt_le_ext_adv *adv,
 
 static void adv_timeout(struct k_work *work);
 
+int bt_le_lim_adv_cancel_timeout(struct bt_le_ext_adv *adv)
+{
+	return k_work_cancel_delayable(&adv->lim_adv_timeout_work);
+}
+
 int bt_le_adv_start(const struct bt_le_adv_param *param,
 		    const struct bt_data *ad, size_t ad_len,
 		    const struct bt_data *sd, size_t sd_len)
@@ -1020,8 +1025,8 @@ int bt_le_adv_start(const struct bt_le_adv_param *param,
 	}
 
 	if (ad_is_limited(ad, ad_len)) {
-		k_work_init_delayable(&adv->timeout_work, adv_timeout);
-		k_work_reschedule(&adv->timeout_work,
+		k_work_init_delayable(&adv->lim_adv_timeout_work, adv_timeout);
+		k_work_reschedule(&adv->lim_adv_timeout_work,
 				  K_SECONDS(CONFIG_BT_LIM_ADV_TIMEOUT));
 	}
 
@@ -1033,6 +1038,8 @@ int bt_le_adv_stop(void)
 	struct bt_le_ext_adv *adv = bt_le_adv_lookup_legacy();
 	int err;
 
+	(void)bt_le_lim_adv_cancel_timeout(adv);
+
 	if (!adv) {
 		BT_ERR("No valid legacy adv");
 		return 0;
@@ -1284,6 +1291,8 @@ int bt_le_ext_adv_start(struct bt_le_ext_adv *adv,
 
 int bt_le_ext_adv_stop(struct bt_le_ext_adv *adv)
 {
+	(void)bt_le_lim_adv_cancel_timeout(adv);
+
 	atomic_clear_bit(adv->flags, BT_ADV_PERSIST);
 
 	if (!atomic_test_bit(adv->flags, BT_ADV_ENABLED)) {
@@ -1360,13 +1369,13 @@ int bt_le_ext_adv_delete(struct bt_le_ext_adv *adv)
 static void adv_timeout(struct k_work *work)
 {
 	int err = 0;
-#if defined(CONFIG_BT_EXT_ADV)
 	struct k_work_delayable *dwork;
 	struct bt_le_ext_adv *adv;
 
 	dwork = k_work_delayable_from_work(work);
-	adv = CONTAINER_OF(dwork, struct bt_le_ext_adv, timeout_work);
+	adv = CONTAINER_OF(dwork, struct bt_le_ext_adv, lim_adv_timeout_work);
 
+#if defined(CONFIG_BT_EXT_ADV)
 	if (adv == bt_dev.adv) {
 		err = bt_le_adv_stop();
 	} else {
@@ -1582,6 +1591,7 @@ void bt_hci_le_adv_set_terminated(struct net_buf *buf)
 	adv = bt_adv_lookup_handle(evt->adv_handle);
 	conn_handle = sys_le16_to_cpu(evt->conn_handle);
 
+	(void)bt_le_lim_adv_cancel_timeout(adv);
 #if (CONFIG_BT_ID_MAX > 1) && (CONFIG_BT_EXT_ADV_MAX_ADV_SET > 1)
 	bt_dev.adv_conn_id = adv->id;
 	for (int i = 0; i < ARRAY_SIZE(bt_dev.cached_conn_complete); i++) {

subsys/bluetooth/host/adv.h

@@ -19,3 +19,4 @@ int bt_le_adv_set_enable_ext(struct bt_le_ext_adv *adv,
 			 bool enable,
 			 const struct bt_le_ext_adv_start_param *param);
 int bt_le_adv_set_enable_legacy(struct bt_le_ext_adv *adv, bool enable);
+int bt_le_lim_adv_cancel_timeout(struct bt_le_ext_adv *adv);

subsys/bluetooth/host/hci_core.c

@@ -1323,6 +1323,12 @@ static void le_legacy_conn_complete(struct net_buf *buf)
 	struct bt_hci_evt_le_conn_complete *evt = (void *)buf->data;
 	struct bt_hci_evt_le_enh_conn_complete enh;
 
+#if defined(CONFIG_BT_BROADCASTER)
+	struct bt_le_ext_adv *adv = bt_le_adv_lookup_legacy();
+
+	(void)bt_le_lim_adv_cancel_timeout(adv);
+#endif
+
 	BT_DBG("status 0x%02x role %u %s", evt->status, evt->role,
 	       bt_addr_le_str(&evt->peer_addr));
 

subsys/bluetooth/host/hci_core.h

@@ -151,7 +151,7 @@ struct bt_le_ext_adv {
 	int8_t                    tx_power;
 #endif /* defined(CONFIG_BT_EXT_ADV) */
 
-	struct k_work_delayable	timeout_work;
+	struct k_work_delayable	lim_adv_timeout_work;
 };
 
 enum {