33 static int batadv_route_unicast_packet(struct sk_buff *skb,
149 bool batadv_check_management_packet(struct sk_buff *skb,  in batadv_check_management_packet()  argument
156 	if (unlikely(!pskb_may_pull(skb, header_len)))  in batadv_check_management_packet()
159 	ethhdr = eth_hdr(skb);  in batadv_check_management_packet()
170 	if (skb_cow(skb, 0) < 0)  in batadv_check_management_packet()
174 	if (skb_linearize(skb) < 0)  in batadv_check_management_packet()
189 				      struct sk_buff *skb)  in batadv_recv_my_icmp_packet()  argument
196 	icmph = (struct batadv_icmp_header *)skb->data;  in batadv_recv_my_icmp_packet()
203 		if (skb_linearize(skb) < 0)  in batadv_recv_my_icmp_packet()
206 		batadv_socket_receive_packet(icmph, skb->len);  in batadv_recv_my_icmp_packet()
220 		if (skb_cow(skb, ETH_HLEN) < 0)  in batadv_recv_my_icmp_packet()
223 		icmph = (struct batadv_icmp_header *)skb->data;  in batadv_recv_my_icmp_packet()
230 		res = batadv_send_skb_to_orig(skb, orig_node, NULL);  in batadv_recv_my_icmp_packet()
248 					 struct sk_buff *skb)  in batadv_recv_icmp_ttl_exceeded()  argument
255 	icmp_packet = (struct batadv_icmp_packet *)skb->data;  in batadv_recv_icmp_ttl_exceeded()
274 	if (skb_cow(skb, ETH_HLEN) < 0)  in batadv_recv_icmp_ttl_exceeded()
277 	icmp_packet = (struct batadv_icmp_packet *)skb->data;  in batadv_recv_icmp_ttl_exceeded()
284 	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)  in batadv_recv_icmp_ttl_exceeded()
295 int batadv_recv_icmp_packet(struct sk_buff *skb,  in batadv_recv_icmp_packet()  argument
307 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in batadv_recv_icmp_packet()
310 	ethhdr = eth_hdr(skb);  in batadv_recv_icmp_packet()
324 	icmph = (struct batadv_icmp_header *)skb->data;  in batadv_recv_icmp_packet()
329 	    (skb->len >= sizeof(struct batadv_icmp_packet_rr))) {  in batadv_recv_icmp_packet()
330 		if (skb_linearize(skb) < 0)  in batadv_recv_icmp_packet()
334 		if (skb_cow(skb, ETH_HLEN) < 0)  in batadv_recv_icmp_packet()
337 		icmph = (struct batadv_icmp_header *)skb->data;  in batadv_recv_icmp_packet()
349 		return batadv_recv_my_icmp_packet(bat_priv, skb);  in batadv_recv_icmp_packet()
353 		return batadv_recv_icmp_ttl_exceeded(bat_priv, skb);  in batadv_recv_icmp_packet()
361 	if (skb_cow(skb, ETH_HLEN) < 0)  in batadv_recv_icmp_packet()
364 	icmph = (struct batadv_icmp_header *)skb->data;  in batadv_recv_icmp_packet()
370 	if (batadv_send_skb_to_orig(skb, orig_node, recv_if) != NET_XMIT_DROP)  in batadv_recv_icmp_packet()
391 				       struct sk_buff *skb, int hdr_size)  in batadv_check_unicast_packet()  argument
396 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in batadv_check_unicast_packet()
399 	ethhdr = eth_hdr(skb);  in batadv_check_unicast_packet()
555 static int batadv_route_unicast_packet(struct sk_buff *skb,  in batadv_route_unicast_packet()  argument
561 	struct ethhdr *ethhdr = eth_hdr(skb);  in batadv_route_unicast_packet()
564 	unicast_packet = (struct batadv_unicast_packet *)skb->data;  in batadv_route_unicast_packet()
580 	if (skb_cow(skb, ETH_HLEN) < 0)  in batadv_route_unicast_packet()
584 	unicast_packet = (struct batadv_unicast_packet *)skb->data;  in batadv_route_unicast_packet()
601 		batadv_skb_set_priority(skb, hdr_len);  in batadv_route_unicast_packet()
603 	res = batadv_send_skb_to_orig(skb, orig_node, recv_if);  in batadv_route_unicast_packet()
610 				   skb->len + ETH_HLEN);  in batadv_route_unicast_packet()
681 				     struct sk_buff *skb, int hdr_len) {  in batadv_check_unicast_ttvn()  argument
691 	if (!pskb_may_pull(skb, hdr_len + ETH_HLEN))  in batadv_check_unicast_ttvn()
695 	if (skb_cow(skb, sizeof(*unicast_packet)) < 0)  in batadv_check_unicast_ttvn()
698 	unicast_packet = (struct batadv_unicast_packet *)skb->data;  in batadv_check_unicast_ttvn()
699 	vid = batadv_get_vid(skb, hdr_len);  in batadv_check_unicast_ttvn()
700 	ethhdr = (struct ethhdr *)(skb->data + hdr_len);  in batadv_check_unicast_ttvn()
795 int batadv_recv_unhandled_unicast_packet(struct sk_buff *skb,  in batadv_recv_unhandled_unicast_packet()  argument
802 	check = batadv_check_unicast_packet(bat_priv, skb, hdr_size);  in batadv_recv_unhandled_unicast_packet()
807 	unicast_packet = (struct batadv_unicast_packet *)skb->data;  in batadv_recv_unhandled_unicast_packet()
811 	return batadv_route_unicast_packet(skb, recv_if);  in batadv_recv_unhandled_unicast_packet()
814 int batadv_recv_unicast_packet(struct sk_buff *skb,  in batadv_recv_unicast_packet()  argument
825 	unicast_packet = (struct batadv_unicast_packet *)skb->data;  in batadv_recv_unicast_packet()
826 	unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;  in batadv_recv_unicast_packet()
834 	check = batadv_check_unicast_packet(bat_priv, skb, hdr_size);  in batadv_recv_unicast_packet()
840 		batadv_nc_skb_store_sniffed_unicast(bat_priv, skb);  in batadv_recv_unicast_packet()
844 	if (!batadv_check_unicast_ttvn(bat_priv, skb, hdr_size))  in batadv_recv_unicast_packet()
856 		if (batadv_dat_snoop_incoming_arp_request(bat_priv, skb,  in batadv_recv_unicast_packet()
859 		if (batadv_dat_snoop_incoming_arp_reply(bat_priv, skb,  in batadv_recv_unicast_packet()
863 		batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,  in batadv_recv_unicast_packet()
873 	return batadv_route_unicast_packet(skb, recv_if);  in batadv_recv_unicast_packet()
885 int batadv_recv_unicast_tvlv(struct sk_buff *skb,  in batadv_recv_unicast_tvlv()  argument
895 	if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0)  in batadv_recv_unicast_tvlv()
899 	if (skb_cow(skb, hdr_size) < 0)  in batadv_recv_unicast_tvlv()
903 	if (skb_linearize(skb) < 0)  in batadv_recv_unicast_tvlv()
906 	unicast_tvlv_packet = (struct batadv_unicast_tvlv_packet *)skb->data;  in batadv_recv_unicast_tvlv()
908 	tvlv_buff = (unsigned char *)(skb->data + hdr_size);  in batadv_recv_unicast_tvlv()
911 	if (tvlv_buff_len > skb->len - hdr_size)  in batadv_recv_unicast_tvlv()
920 		ret = batadv_route_unicast_packet(skb, recv_if);  in batadv_recv_unicast_tvlv()
922 		consume_skb(skb);  in batadv_recv_unicast_tvlv()
938 int batadv_recv_frag_packet(struct sk_buff *skb,  in batadv_recv_frag_packet()  argument
946 	if (batadv_check_unicast_packet(bat_priv, skb,  in batadv_recv_frag_packet()
950 	frag_packet = (struct batadv_frag_packet *)skb->data;  in batadv_recv_frag_packet()
957 	    batadv_frag_skb_fwd(skb, recv_if, orig_node_src)) {  in batadv_recv_frag_packet()
963 	batadv_add_counter(bat_priv, BATADV_CNT_FRAG_RX_BYTES, skb->len);  in batadv_recv_frag_packet()
966 	if (!batadv_frag_skb_buffer(&skb, orig_node_src))  in batadv_recv_frag_packet()
972 	if (skb)  in batadv_recv_frag_packet()
973 		batadv_batman_skb_recv(skb, recv_if->net_dev,  in batadv_recv_frag_packet()
985 int batadv_recv_bcast_packet(struct sk_buff *skb,  in batadv_recv_bcast_packet()  argument
998 	if (unlikely(!pskb_may_pull(skb, hdr_size)))  in batadv_recv_bcast_packet()
1001 	ethhdr = eth_hdr(skb);  in batadv_recv_bcast_packet()
1015 	bcast_packet = (struct batadv_bcast_packet *)skb->data;  in batadv_recv_bcast_packet()
1053 	if (batadv_bla_check_bcast_duplist(bat_priv, skb))  in batadv_recv_bcast_packet()
1056 	batadv_skb_set_priority(skb, sizeof(struct batadv_bcast_packet));  in batadv_recv_bcast_packet()
1059 	batadv_add_bcast_packet_to_list(bat_priv, skb, 1);  in batadv_recv_bcast_packet()
1064 	if (batadv_bla_is_backbone_gw(skb, orig_node, hdr_size))  in batadv_recv_bcast_packet()
1067 	if (batadv_dat_snoop_incoming_arp_request(bat_priv, skb, hdr_size))  in batadv_recv_bcast_packet()
1069 	if (batadv_dat_snoop_incoming_arp_reply(bat_priv, skb, hdr_size))  in batadv_recv_bcast_packet()
1073 	batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,  in batadv_recv_bcast_packet()