16  * along with this program; if not, write to the Free Software
72 	if ((curr_router) && (!neigh_node)) {  in _update_route()
79 	} else if ((!curr_router) && (neigh_node)) {  in _update_route()
85 	} else if (neigh_node && curr_router) {  in _update_route()
93 	if (curr_router)  in _update_route()
97 	if (neigh_node && !atomic_inc_not_zero(&neigh_node->refcount))  in _update_route()
105 	if (curr_router)  in _update_route()
114 	if (!orig_node)  in update_route()
119 	if (router != neigh_node)  in update_route()
123 	if (router)  in update_route()
132 	if (list_empty(&neigh_node->bonding_list))  in bonding_candidate_del()
153 	/* only consider if it has the same primary address ...  */  in bonding_candidate_add()
154 	if (!compare_eth(orig_node->orig,  in bonding_candidate_add()
159 	if (!router)  in bonding_candidate_add()
163 	if (neigh_node->tq_avg < router->tq_avg - BONDING_TQ_THRESHOLD)  in bonding_candidate_add()
167 	 * check if we have another candidate with the same mac address or  in bonding_candidate_add()
168 	 * interface. If we do, we won't select this candidate because of  in bonding_candidate_add()
174 		if (tmp_neigh_node == neigh_node)  in bonding_candidate_add()
177 		/* we only care if the other candidate is even  in bonding_candidate_add()
179 		if (list_empty(&tmp_neigh_node->bonding_list))  in bonding_candidate_add()
182 		if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) ||  in bonding_candidate_add()
189 	/* don't care further if it is an interference candidate */  in bonding_candidate_add()
190 	if (interference_candidate)  in bonding_candidate_add()
194 	if (!list_empty(&neigh_node->bonding_list))  in bonding_candidate_add()
197 	if (!atomic_inc_not_zero(&neigh_node->refcount))  in bonding_candidate_add()
210 	if (router)  in bonding_candidate_add()
219 	if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))  in bonding_save_primary()
227  *  0 if the packet is to be accepted
228  *  1 if the packet is to be ignored.
233 	if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)  in window_protected()
235 		if (time_after(jiffies, *last_reset +  in window_protected()
253 	/* drop packet if it has not necessary minimum size */  in recv_bat_ogm_packet()
254 	if (unlikely(!pskb_may_pull(skb, BATMAN_OGM_LEN)))  in recv_bat_ogm_packet()
260 	if (!is_broadcast_ether_addr(ethhdr->h_dest))  in recv_bat_ogm_packet()
264 	if (is_broadcast_ether_addr(ethhdr->h_source))  in recv_bat_ogm_packet()
267 	/* create a copy of the skb, if needed, to modify it. */  in recv_bat_ogm_packet()
268 	if (skb_cow(skb, 0) < 0)  in recv_bat_ogm_packet()
272 	if (skb_linearize(skb) < 0)  in recv_bat_ogm_packet()
295 	if (icmp_packet->msg_type != ECHO_REQUEST) {  in recv_my_icmp_packet()
301 	if (!primary_if)  in recv_my_icmp_packet()
307 	if (!orig_node)  in recv_my_icmp_packet()
311 	if (!router)  in recv_my_icmp_packet()
314 	/* create a copy of the skb, if needed, to modify it. */  in recv_my_icmp_packet()
315 	if (skb_cow(skb, sizeof(struct ethhdr)) < 0)  in recv_my_icmp_packet()
329 	if (primary_if)  in recv_my_icmp_packet()
331 	if (router)  in recv_my_icmp_packet()
333 	if (orig_node)  in recv_my_icmp_packet()
349 	/* send TTL exceeded if packet is an echo request (traceroute) */  in recv_icmp_ttl_exceeded()
350 	if (icmp_packet->msg_type != ECHO_REQUEST) {  in recv_icmp_ttl_exceeded()
358 	if (!primary_if)  in recv_icmp_ttl_exceeded()
363 	if (!orig_node)  in recv_icmp_ttl_exceeded()
367 	if (!router)  in recv_icmp_ttl_exceeded()
370 	/* create a copy of the skb, if needed, to modify it. */  in recv_icmp_ttl_exceeded()
371 	if (skb_cow(skb, sizeof(struct ethhdr)) < 0)  in recv_icmp_ttl_exceeded()
385 	if (primary_if)  in recv_icmp_ttl_exceeded()
387 	if (router)  in recv_icmp_ttl_exceeded()
389 	if (orig_node)  in recv_icmp_ttl_exceeded()
406 	 * we truncate all incoming icmp packets if they don't match our size  in recv_icmp_packet()
408 	if (skb->len >= sizeof(struct icmp_packet_rr))  in recv_icmp_packet()
411 	/* drop packet if it has not necessary minimum size */  in recv_icmp_packet()
412 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in recv_icmp_packet()
418 	if (is_broadcast_ether_addr(ethhdr->h_dest))  in recv_icmp_packet()
422 	if (is_broadcast_ether_addr(ethhdr->h_source))  in recv_icmp_packet()
426 	if (!is_my_mac(ethhdr->h_dest))  in recv_icmp_packet()
431 	/* add record route information if not full */  in recv_icmp_packet()
432 	if ((hdr_size == sizeof(struct icmp_packet_rr)) &&  in recv_icmp_packet()
440 	if (is_my_mac(icmp_packet->dst))  in recv_icmp_packet()
444 	if (icmp_packet->ttl < 2)  in recv_icmp_packet()
449 	if (!orig_node)  in recv_icmp_packet()
453 	if (!router)  in recv_icmp_packet()
456 	/* create a copy of the skb, if needed, to modify it. */  in recv_icmp_packet()
457 	if (skb_cow(skb, sizeof(struct ethhdr)) < 0)  in recv_icmp_packet()
470 	if (router)  in recv_icmp_packet()
472 	if (orig_node)  in recv_icmp_packet()
491 		if (!first_candidate)  in find_bond_router()
495 		if (tmp_neigh_node->if_incoming == recv_if)  in find_bond_router()
498 		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))  in find_bond_router()
505 	/* use the first candidate if nothing was found. */  in find_bond_router()
506 	if (!router && first_candidate &&  in find_bond_router()
510 	if (!router)  in find_bond_router()
542 		if (!first_candidate)  in find_ifalter_router()
546 		if (tmp_neigh_node->if_incoming == recv_if)  in find_ifalter_router()
549 		if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))  in find_ifalter_router()
552 		/* if we don't have a router yet  in find_ifalter_router()
554 		if ((!router) ||  in find_ifalter_router()
558 			if (router)  in find_ifalter_router()
568 	/* use the first candidate if nothing was found. */  in find_ifalter_router()
569 	if (!router && first_candidate &&  in find_ifalter_router()
584 	/* drop packet if it has not necessary minimum size */  in recv_tt_query()
585 	if (unlikely(!pskb_may_pull(skb, sizeof(struct tt_query_packet))))  in recv_tt_query()
589 	if (skb_cow(skb, sizeof(struct tt_query_packet)) < 0)  in recv_tt_query()
595 	if (is_broadcast_ether_addr(ethhdr->h_dest))  in recv_tt_query()
599 	if (is_broadcast_ether_addr(ethhdr->h_source))  in recv_tt_query()
608 		/* If we cannot provide an answer the tt_request is  in recv_tt_query()
610 		if (!send_tt_response(bat_priv, tt_query)) {  in recv_tt_query()
620 		if (is_my_mac(tt_query->dst)) {  in recv_tt_query()
623 			if (skb_linearize(skb) < 0)  in recv_tt_query()
629 			if (unlikely(skb_headlen(skb) <  in recv_tt_query()
657 	/* drop packet if it has not necessary minimum size */  in recv_roam_adv()
658 	if (unlikely(!pskb_may_pull(skb, sizeof(struct roam_adv_packet))))  in recv_roam_adv()
664 	if (is_broadcast_ether_addr(ethhdr->h_dest))  in recv_roam_adv()
668 	if (is_broadcast_ether_addr(ethhdr->h_source))  in recv_roam_adv()
673 	if (!is_my_mac(roam_adv_packet->dst))  in recv_roam_adv()
677 	if (!orig_node)  in recv_roam_adv()
699  * bonding if possible. increases the found neighbors
711 	if (!orig_node)  in find_router()
715 	if (!router)  in find_router()
725 	if (!router_orig)  in find_router()
728 	if ((!recv_if) && (!bonding_enabled))  in find_router()
731 	/* if we have something in the primary_addr, we can search  in find_router()
733 	if (compare_eth(router_orig->primary_addr, zero_mac))  in find_router()
739 	if (compare_eth(router_orig->primary_addr, router_orig->orig)) {  in find_router()
744 		if (!primary_orig_node)  in find_router()
752 	if (atomic_read(&primary_orig_node->bond_candidates) < 2)  in find_router()
761 	if (bonding_enabled)  in find_router()
767 	if (router && router->if_incoming->if_status != IF_ACTIVE)  in find_router()
775 	if (router)  in find_router()
784 	/* drop packet if it has not necessary minimum size */  in check_unicast_packet()
785 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in check_unicast_packet()
791 	if (is_broadcast_ether_addr(ethhdr->h_dest))  in check_unicast_packet()
795 	if (is_broadcast_ether_addr(ethhdr->h_source))  in check_unicast_packet()
799 	if (!is_my_mac(ethhdr->h_dest))  in check_unicast_packet()
818 	if (unicast_packet->ttl < 2) {  in route_unicast_packet()
828 	if (!orig_node)  in route_unicast_packet()
831 	/* find_router() increases neigh_nodes refcount if found. */  in route_unicast_packet()
834 	if (!neigh_node)  in route_unicast_packet()
837 	/* create a copy of the skb, if needed, to modify it. */  in route_unicast_packet()
838 	if (skb_cow(skb, sizeof(struct ethhdr)) < 0)  in route_unicast_packet()
843 	if (unicast_packet->packet_type == BAT_UNICAST &&  in route_unicast_packet()
851 	if (unicast_packet->packet_type == BAT_UNICAST_FRAG &&  in route_unicast_packet()
856 		if (ret == NET_RX_DROP)  in route_unicast_packet()
860 		if (!new_skb) {  in route_unicast_packet()
877 	if (neigh_node)  in route_unicast_packet()
879 	if (orig_node)  in route_unicast_packet()
894 	if (skb_cow(skb, sizeof(struct unicast_packet)) < 0)  in check_unicast_ttvn()
899 	if (is_my_mac(unicast_packet->dest)) {  in check_unicast_ttvn()
905 		if (!orig_node)  in check_unicast_ttvn()
914 	if (seq_before(unicast_packet->ttvn, curr_ttvn) || tt_poss_change) {  in check_unicast_ttvn()
916 		if (skb_linearize(skb) < 0)  in check_unicast_ttvn()
923 		if (!orig_node) {  in check_unicast_ttvn()
924 			if (!is_my_client(bat_priv, ethhdr->h_dest))  in check_unicast_ttvn()
927 			if (!primary_if)  in check_unicast_ttvn()
956 	if (check_unicast_packet(skb, hdr_size) < 0)  in recv_unicast_packet()
959 	if (!check_unicast_ttvn(bat_priv, skb))  in recv_unicast_packet()
965 	if (is_my_mac(unicast_packet->dest)) {  in recv_unicast_packet()
981 	if (check_unicast_packet(skb, hdr_size) < 0)  in recv_ucast_frag_packet()
984 	if (!check_unicast_ttvn(bat_priv, skb))  in recv_ucast_frag_packet()
990 	if (is_my_mac(unicast_packet->dest)) {  in recv_ucast_frag_packet()
994 		if (ret == NET_RX_DROP)  in recv_ucast_frag_packet()
998 		if (!new_skb)  in recv_ucast_frag_packet()
1020 	/* drop packet if it has not necessary minimum size */  in recv_bcast_packet()
1021 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in recv_bcast_packet()
1027 	if (!is_broadcast_ether_addr(ethhdr->h_dest))  in recv_bcast_packet()
1031 	if (is_broadcast_ether_addr(ethhdr->h_source))  in recv_bcast_packet()
1035 	if (is_my_mac(ethhdr->h_source))  in recv_bcast_packet()
1041 	if (is_my_mac(bcast_packet->orig))  in recv_bcast_packet()
1044 	if (bcast_packet->ttl < 2)  in recv_bcast_packet()
1049 	if (!orig_node)  in recv_bcast_packet()
1055 	if (get_bit_status(orig_node->bcast_bits, orig_node->last_bcast_seqno,  in recv_bcast_packet()
1062 	if (window_protected(bat_priv, seq_diff,  in recv_bcast_packet()
1067 	 * if required. */  in recv_bcast_packet()
1068 	if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))  in recv_bcast_packet()
1084 	if (orig_node)  in recv_bcast_packet()
1097 	if (skb_linearize(skb) < 0)  in recv_vis_packet()
1100 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in recv_vis_packet()
1107 	if (!is_my_mac(ethhdr->h_dest))  in recv_vis_packet()
1111 	if (is_my_mac(vis_packet->vis_orig))  in recv_vis_packet()
1114 	if (is_my_mac(vis_packet->sender_orig))  in recv_vis_packet()