net/ipv6/udp.c

515 					 struct udphdr *uh,
545 	sk = __udp6_lib_lookup(net, &hdr->daddr, uh->source,
546 			       &hdr->saddr, uh->dest,
576 	struct udphdr *uh = (struct udphdr *)(skb->data+offset);
583 	sk = __udp6_lib_lookup(net, daddr, uh->dest, saddr, uh->source,
589 			sk = __udp6_lib_err_encap(net, hdr, offset, uh,
629 			udp_sk(sk)->encap_err_rcv(sk, skb, err, uh->dest,
630 						  ntohl(info), (u8 *)(uh+1));
638 		ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1));
848 	const struct udphdr *uh = udp_hdr(skb);
849 	unsigned short hnum = ntohs(uh->dest);
868 		if (!__udp_v6_is_mcast_sock(net, sk, uh->dest, daddr,
869 					    uh->source, saddr, dif, sdif,
875 		if (!uh->check && !udp_get_no_check6_rx(sk))
922 				struct udphdr *uh)
926 	if (inet_get_convert_csum(sk) && uh->check && !IS_UDPLITE(sk))
943 	struct udphdr *uh;
953 	uh = udp_hdr(skb);
955 	ulen = ntohs(uh->len);
966 		if (ulen < sizeof(*uh))
974 			uh = udp_hdr(skb);
978 	if (udp6_csum_init(skb, uh, proto))
982 	sk = inet6_steal_sock(net, skb, sizeof(struct udphdr), saddr, uh->source, daddr, uh->dest,
994 		if (!uh->check && !udp_get_no_check6_rx(sk)) {
1000 		ret = udp6_unicast_rcv_skb(sk, skb, uh);
1014 	sk = __udp6_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
1016 		if (!uh->check && !udp_get_no_check6_rx(sk))
1018 		return udp6_unicast_rcv_skb(sk, skb, uh);
1023 	if (!uh->check)
1044 			    saddr, ntohs(uh->source),
1046 			    daddr, ntohs(uh->dest));
1092 	const struct udphdr *uh;
1102 	uh = udp_hdr(skb);
1105 		sk = __udp6_lib_demux_lookup(net, uh->dest,
1107 					     uh->source, &ipv6_hdr(skb)->saddr,
1187 	struct udphdr *uh = udp_hdr(skb);
1195 		uh->check = ~csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP, 0);
1212 		uh->check = csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP,
1214 		if (uh->check == 0)
1215 			uh->check = CSUM_MANGLED_0;
1227 	struct udphdr *uh;
1233 	int datalen = len - sizeof(*uh);
1238 	uh = udp_hdr(skb);
1239 	uh->source = fl6->fl6_sport;
1240 	uh->dest = fl6->fl6_dport;
1241 	uh->len = htons(len);
1242 	uh->check = 0;
1288 	uh->check = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
1290 	if (uh->check == 0)
1291 		uh->check = CSUM_MANGLED_0;