net/batman-adv/bat_v_ogm.c

337 			   "Sending own OGM2 packet (originator %pM, seqno %u, throughput %u, TTL %d) on interface %s [%pM]\n",
339 			   ntohl(ogm_packet->throughput), ogm_packet->ttl,
453  * batadv_v_forward_penalty() - apply a penalty to the throughput metric
458  * @throughput: the current throughput
460  * Apply a penalty on the current throughput metric value based on the
463  * Initially the per hardif hop penalty is applied to the throughput. After
465  * - throughput * 50%          if the incoming and outgoing interface are the
466  *                             same WiFi interface and the throughput is above
468  * - throughput                if the outgoing interface is the default
471  * - throughput * node hop penalty  otherwise
473  * Return: the penalised throughput metric.
478 				    u32 throughput)
485 	throughput = throughput * (hop_penalty_max - if_hop_penalty) /
490 		return throughput;
492 	/* Forwarding on the same WiFi interface cuts the throughput in half
494 	 * Very low throughput values are the exception.
496 	if (throughput > 10 &&
499 		return throughput / 2;
502 	return throughput * (hop_penalty_max - hop_penalty) / hop_penalty_max;
515  * Forward an OGM to an interface after having altered the throughput metric and
577 	ogm_forward->throughput = htonl(neigh_ifinfo->bat_v.throughput);
581 		   "Forwarding OGM2 packet on %s: throughput %u, ttl %u, received via %s\n",
582 		   if_outgoing->net_dev->name, ntohl(ogm_forward->throughput),
660 						   ntohl(ogm2->throughput));
661 	neigh_ifinfo->bat_v.throughput = path_throughput;
737 	/* don't consider neighbours with worse throughput.
752 		router_throughput = router_ifinfo->bat_v.throughput;
753 		neigh_throughput = neigh_ifinfo->bat_v.throughput;
868 	ogm_throughput = ntohl(ogm_packet->throughput);
871 		   "Received OGM2 packet via NB: %pM, IF: %s [%pM] (from OG: %pM, seqno %u, throughput %u, TTL %u, V %u, tvlv_len %u)\n",
883 	/* If the throughput metric is 0, immediately drop the packet. No need
888 			   "Drop packet: originator packet with throughput metric of 0\n");
909 	/* Update the received throughput metric to match the link
912 	 *    neighbor) the path throughput metric equals the link throughput.
913 	 *  - For OGMs traversing more than hop the path throughput metric is
914 	 *    the smaller of the path throughput and the link throughput.
916 	link_throughput = ewma_throughput_read(&hardif_neigh->bat_v.throughput);
918 	ogm_packet->throughput = htonl(path_throughput);
1060 	ogm_packet->throughput = htonl(BATADV_THROUGHPUT_MAX_VALUE);