59 int net_ipv6_create(struct net_pkt *pkt,  in net_ipv6_create()  argument
67 	ipv6_hdr = (struct net_ipv6_hdr *)net_pkt_get_data(pkt, &ipv6_access);  in net_ipv6_create()
73 		net_ipv6_set_dscp(&tc, net_pkt_ip_dscp(pkt));  in net_ipv6_create()
74 		net_ipv6_set_ecn(&tc, net_pkt_ip_ecn(pkt));  in net_ipv6_create()
87 	ipv6_hdr->hop_limit = net_pkt_ipv6_hop_limit(pkt);  in net_ipv6_create()
90 			if (net_pkt_context(pkt) != NULL) {  in net_ipv6_create()
92 					net_context_get_ipv6_mcast_hop_limit(net_pkt_context(pkt));  in net_ipv6_create()
95 					net_if_ipv6_get_mcast_hop_limit(net_pkt_iface(pkt));  in net_ipv6_create()
98 			if (net_pkt_context(pkt) != NULL) {  in net_ipv6_create()
100 					net_context_get_ipv6_hop_limit(net_pkt_context(pkt));  in net_ipv6_create()
103 					net_if_ipv6_get_hop_limit(net_pkt_iface(pkt));  in net_ipv6_create()
111 	net_pkt_set_ip_hdr_len(pkt, sizeof(struct net_ipv6_hdr));  in net_ipv6_create()
112 	net_pkt_set_ipv6_ext_len(pkt, 0);  in net_ipv6_create()
114 	return net_pkt_set_data(pkt, &ipv6_access);  in net_ipv6_create()
117 int net_ipv6_finalize(struct net_pkt *pkt, uint8_t next_header_proto)  in net_ipv6_finalize()  argument
122 	net_pkt_set_overwrite(pkt, true);  in net_ipv6_finalize()
124 	ipv6_hdr = (struct net_ipv6_hdr *)net_pkt_get_data(pkt, &ipv6_access);  in net_ipv6_finalize()
129 	ipv6_hdr->len = htons(net_pkt_get_len(pkt) -  in net_ipv6_finalize()
132 	if (net_pkt_ipv6_next_hdr(pkt) != 255U) {  in net_ipv6_finalize()
133 		ipv6_hdr->nexthdr = net_pkt_ipv6_next_hdr(pkt);  in net_ipv6_finalize()
138 	net_pkt_set_data(pkt, &ipv6_access);  in net_ipv6_finalize()
140 	if (net_pkt_ipv6_next_hdr(pkt) != 255U &&  in net_ipv6_finalize()
141 	    net_pkt_skip(pkt, net_pkt_ipv6_ext_len(pkt))) {  in net_ipv6_finalize()
147 		return net_udp_finalize(pkt, false);  in net_ipv6_finalize()
150 		return net_tcp_finalize(pkt, false);  in net_ipv6_finalize()
152 		return net_icmpv6_finalize(pkt, false);  in net_ipv6_finalize()
158 static inline bool ipv6_drop_on_unknown_option(struct net_pkt *pkt,  in ipv6_drop_on_unknown_option()  argument
192 		net_icmpv6_send_error(pkt, NET_ICMPV6_PARAM_PROBLEM,  in ipv6_drop_on_unknown_option()
201 static inline int ipv6_handle_ext_hdr_options(struct net_pkt *pkt,  in ipv6_handle_ext_hdr_options()  argument
211 		if (net_pkt_read_u8(pkt, &val)) {  in ipv6_handle_ext_hdr_options()
229 		opt_type_offset = net_pkt_get_current_offset(pkt);  in ipv6_handle_ext_hdr_options()
234 		if (net_pkt_read_u8(pkt, &opt_type)) {  in ipv6_handle_ext_hdr_options()
239 			if (net_pkt_read_u8(pkt, &opt_len)) {  in ipv6_handle_ext_hdr_options()
252 			net_pkt_skip(pkt, opt_len);  in ipv6_handle_ext_hdr_options()
265 			if (ipv6_drop_on_unknown_option(pkt, hdr,  in ipv6_handle_ext_hdr_options()
270 			if (net_pkt_skip(pkt, opt_len)) {  in ipv6_handle_ext_hdr_options()
306 static void ipv6_no_route_info(struct net_pkt *pkt,  in ipv6_no_route_info()  argument
311 		pkt, net_sprint_ipv6_addr(src),  in ipv6_no_route_info()
316 static enum net_verdict ipv6_route_packet(struct net_pkt *pkt,  in ipv6_route_packet()  argument
328 		found = net_route_get_info(net_pkt_iface(pkt),  in ipv6_route_packet()
340 			ipv6_no_route_info(pkt, (struct in6_addr *)hdr->src,  in ipv6_route_packet()
348 		net_pkt_set_orig_iface(pkt, net_pkt_iface(pkt));  in ipv6_route_packet()
351 			net_pkt_set_iface(pkt, route->iface);  in ipv6_route_packet()
355 		    net_pkt_orig_iface(pkt) != net_pkt_iface(pkt) &&  in ipv6_route_packet()
356 		    !net_if_flag_is_set(net_pkt_orig_iface(pkt), NET_IF_IPV6_NO_ND)) {  in ipv6_route_packet()
362 				pkt, net_pkt_orig_iface(pkt),  in ipv6_route_packet()
363 				net_pkt_iface(pkt));  in ipv6_route_packet()
365 			add_route(net_pkt_orig_iface(pkt),  in ipv6_route_packet()
369 		ret = net_route_packet(pkt, nexthop);  in ipv6_route_packet()
373 				pkt, net_sprint_ipv6_addr(nexthop),  in ipv6_route_packet()
374 				net_pkt_iface(pkt), ret);  in ipv6_route_packet()
383 			ret = net_route_packet_if(pkt, iface);  in ipv6_route_packet()
387 					pkt, net_pkt_iface(pkt), ret);  in ipv6_route_packet()
394 			net_sprint_ipv6_addr(&hdr->dst), pkt);  in ipv6_route_packet()
401 static inline enum net_verdict ipv6_route_packet(struct net_pkt *pkt,  in ipv6_route_packet()  argument
404 	ARG_UNUSED(pkt);  in ipv6_route_packet()
407 	NET_DBG("DROP: Packet %p not for me", pkt);  in ipv6_route_packet()
415 static enum net_verdict ipv6_forward_mcast_packet(struct net_pkt *pkt,  in ipv6_forward_mcast_packet()  argument
433 	routed = net_route_mcast_forward_packet(pkt, hdr);  in ipv6_forward_mcast_packet()
474 enum net_verdict net_ipv6_input(struct net_pkt *pkt, bool is_loopback)  in net_ipv6_input()  argument
479 	struct net_if *pkt_iface = net_pkt_iface(pkt);  in net_ipv6_input()
481 	int real_len = net_pkt_get_len(pkt);  in net_ipv6_input()
494 	net_pkt_cursor_backup(pkt, &hdr_start);  in net_ipv6_input()
499 	hdr = (struct net_ipv6_hdr *)net_pkt_get_data(pkt, &ipv6_access);  in net_ipv6_input()
511 		net_pkt_update_length(pkt, pkt_len);  in net_ipv6_input()
570 		net_pkt_set_ip_dscp(pkt, net_ipv6_get_dscp(tc));  in net_ipv6_input()
571 		net_pkt_set_ip_ecn(pkt, net_ipv6_get_ecn(tc));  in net_ipv6_input()
575 	net_pkt_set_ipv6_next_hdr(pkt, hdr->nexthdr);  in net_ipv6_input()
576 	net_pkt_set_ipv6_ext_len(pkt, 0);  in net_ipv6_input()
577 	net_pkt_set_ip_hdr_len(pkt, sizeof(struct net_ipv6_hdr));  in net_ipv6_input()
578 	net_pkt_set_ipv6_hop_limit(pkt, NET_IPV6_HDR(pkt)->hop_limit);  in net_ipv6_input()
579 	net_pkt_set_family(pkt, PF_INET6);  in net_ipv6_input()
581 	if (!net_pkt_filter_ip_recv_ok(pkt)) {  in net_ipv6_input()
588 		net_ipv6_is_addr_mcast((struct in6_addr *)hdr->dst) && !net_pkt_forwarding(pkt)) {  in net_ipv6_input()
596 		if (ipv6_forward_mcast_packet(pkt, hdr) == NET_DROP) {  in net_ipv6_input()
604 			if (ipv6_route_packet(pkt, hdr) == NET_OK) {  in net_ipv6_input()
623 			ipv6_no_route_info(pkt, (struct in6_addr *)hdr->src,  in net_ipv6_input()
659 	net_pkt_acknowledge_data(pkt, &ipv6_access);  in net_ipv6_input()
665 	net_pkt_set_ipv6_hdr_prev(pkt, prev_hdr_offset);  in net_ipv6_input()
684 		prev_hdr_offset = net_pkt_get_current_offset(pkt);  in net_ipv6_input()
686 		if (net_pkt_read_u8(pkt, &nexthdr)) {  in net_ipv6_input()
733 					pkt,  in net_ipv6_input()
734 					net_pkt_get_current_offset(pkt) - 1);  in net_ipv6_input()
735 				return net_ipv6_handle_fragment_hdr(pkt, hdr,  in net_ipv6_input()
746 		exthdr_len = ipv6_handle_ext_hdr_options(pkt, hdr, pkt_len);  in net_ipv6_input()
757 		net_pkt_set_ipv6_hdr_prev(pkt, prev_hdr_offset);  in net_ipv6_input()
760 	net_pkt_set_ipv6_ext_len(pkt, ext_len);  in net_ipv6_input()
764 		verdict = net_icmpv6_input(pkt, hdr);  in net_ipv6_input()
767 		proto_hdr.tcp = net_tcp_input(pkt, &tcp_access);  in net_ipv6_input()
775 		proto_hdr.udp = net_udp_input(pkt, &udp_access);  in net_ipv6_input()
792 		net_pkt_set_remote_address(pkt, (struct sockaddr *)&remote_addr,  in net_ipv6_input()
796 		net_pkt_cursor_restore(pkt, &hdr_start);  in net_ipv6_input()
797 		net_pkt_pull(pkt, net_pkt_ip_hdr_len(pkt) +  in net_ipv6_input()
798 			     net_pkt_ipv6_ext_len(pkt));  in net_ipv6_input()
800 		tunnel_iface = net_ipip_get_virtual_interface(net_pkt_iface(pkt));  in net_ipv6_input()
802 			return net_if_l2(tunnel_iface)->recv(net_pkt_iface(pkt), pkt);  in net_ipv6_input()
818 	verdict = net_conn_input(pkt, &ip, current_hdr, &proto_hdr);  in net_ipv6_input()
832 	net_icmpv6_send_error(pkt, NET_ICMPV6_PARAM_PROBLEM,  in net_ipv6_input()
834 			      net_pkt_get_current_offset(pkt) - 1);  in net_ipv6_input()