23 #include "beacon.h"
48 	 * Identifier for the current Private beacon random-value.
50 	 * Whenever it's time for a subnet to create a beacon, it'll compare
51 	 * the subnet's beacon idx to determine whether the random value has
52 	 * changed since the last beacon was sent. If this is the case, we'll
53 	 * regenerate the beacon based on the new random value.
95 	struct bt_mesh_beacon *beacon;  in beacon_cache_match()  local
98 	beacon = subnet_beacon_get_by_type(sub, params->private);  in beacon_cache_match()
100 	return !memcmp(beacon->cache, params->auth, sizeof(beacon->cache));  in beacon_cache_match()
103 static void cache_add(const uint8_t auth[8], struct bt_mesh_beacon *beacon)  in cache_add()  argument
105 	memcpy(beacon->cache, auth, sizeof(beacon->cache));  in cache_add()
119 		LOG_ERR("Failed to send beacon: err %d", err);  in beacon_start()
128 	struct bt_mesh_beacon *beacon = user_data;  in beacon_complete()  local
131 	beacon->sent = k_uptime_get_32();  in beacon_complete()
172 	/* The Private beacon random value should change every N seconds to maintain privacy.  in private_random_update()
173 	 * N = (10 * interval) seconds, or on every beacon creation, if the interval is 0.  in private_random_update()
188 	/* Update the index to indicate to all subnets that the private beacon must be regenerated.  in private_random_update()
189 	 * Each subnet maintains the random index their private beacon data was generated with.  in private_random_update()
207 		LOG_ERR("Can't encrypt private beacon");  in private_beacon_update()
220 	/* Refresh beacon data */  in private_beacon_create()
255 /* If the interval has passed or is within 5 seconds from now send a beacon */
256 #define BEACON_THRESHOLD(beacon) \  argument
257 	((10 * ((beacon)->last + 1)) * MSEC_PER_SEC - (5 * MSEC_PER_SEC))
265 static int net_beacon_send(struct bt_mesh_subnet *sub, struct bt_mesh_beacon *beacon,  in net_beacon_send()  argument
281 	time_diff = now - beacon->sent;  in net_beacon_send()
282 	time_since_last_recv = now - beacon->recv;  in net_beacon_send()
284 		(time_diff < BEACON_THRESHOLD(beacon) ||  in net_beacon_send()
292 		LOG_ERR("Unable to allocate beacon adv");  in net_beacon_send()
298 		bt_mesh_adv_send(adv, &send_cb, beacon);  in net_beacon_send()
311 		struct bt_mesh_beacon *beacon;  in net_beacon_for_subnet_send()  member
316 			.beacon = &sub->secure_beacon,  in net_beacon_for_subnet_send()
322 			.beacon = &sub->priv_beacon,  in net_beacon_for_subnet_send()
334 		err = net_beacon_send(sub, beacons[i].beacon, beacons[i].create_fn);  in net_beacon_for_subnet_send()
356 		LOG_ERR("Unable to allocate beacon adv");  in unprovisioned_beacon_send()
416 		LOG_ERR("Invalid unprovisioned beacon length (%u)", buf->len);  in unprovisioned_beacon_recv()
450 	/* Observation period is 20 seconds, whereas the beacon timer  in update_beacon_observation()
531 	if (bt_mesh_beacon_auth(&keys->beacon, params->flags, keys->net_id, params->iv_index,  in auth_match()
613 static void net_beacon_register(struct bt_mesh_beacon *beacon, bool priv)  in net_beacon_register()  argument
616 	     bt_mesh_beacon_enabled()) && beacon->cur < 0xff) {  in net_beacon_register()
617 		beacon->cur++;  in net_beacon_register()
618 		beacon->recv = k_uptime_get_32();  in net_beacon_register()
631 		LOG_WRN("Ignoring secure beacon on non-primary subnet");  in net_beacon_recv()
654 	struct bt_mesh_beacon *beacon;  in net_beacon_resolve()  local
658 		beacon = subnet_beacon_get_by_type(sub, params->private);  in net_beacon_resolve()
660 		/* We've seen this beacon before - just update the stats */  in net_beacon_resolve()
661 		net_beacon_register(beacon, params->private);  in net_beacon_resolve()
667 		LOG_DBG("No subnet that matched beacon");  in net_beacon_resolve()
676 	beacon = subnet_beacon_get_by_type(sub, params->private);  in net_beacon_resolve()
678 	cache_add(params->auth, beacon);  in net_beacon_resolve()
681 	net_beacon_register(beacon, params->private);  in net_beacon_resolve()
689 		LOG_ERR("Too short secure beacon (len %u)", buf->len);  in secure_beacon_recv()
707 		LOG_ERR("Too short private beacon (len %u)", buf->len);  in private_beacon_recv()
726 		LOG_ERR("Too short beacon");  in bt_mesh_beacon_recv()
744 		LOG_WRN("Unknown beacon type 0x%02x", type);  in bt_mesh_beacon_recv()
761 	/* Invalidate private beacon to force regeneration: */  in bt_mesh_beacon_update()
766 	bt_mesh_beacon_auth(&keys->beacon, flags, keys->net_id, bt_mesh.iv_index,  in bt_mesh_beacon_update()
777 BT_MESH_SUBNET_CB_DEFINE(beacon) = {
794 	/* Fire the beacon handler straight away if it's not already pending -  in bt_mesh_beacon_ivu_initiator()