net/ipv6/udp.c

649 					 struct udphdr *uh,
679 	sk = __udp6_lib_lookup(net, &hdr->daddr, uh->source,
680 			       &hdr->saddr, uh->dest,
710 	struct udphdr *uh = (struct udphdr *)(skb->data+offset);
717 	sk = __udp6_lib_lookup(net, daddr, uh->dest, saddr, uh->source,
723 			sk = __udp6_lib_err_encap(net, hdr, offset, uh,
764 			udp_sk(sk)->encap_err_rcv(sk, skb, err, uh->dest,
765 						  ntohl(info), (u8 *)(uh+1));
773 		ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1));
981 	const struct udphdr *uh = udp_hdr(skb);
982 	unsigned short hnum = ntohs(uh->dest);
1001 		if (!__udp_v6_is_mcast_sock(net, sk, uh->dest, daddr,
1002 					    uh->source, saddr, dif, sdif,
1008 		if (!uh->check && !udp_get_no_check6_rx(sk))
1055 				struct udphdr *uh)
1059 	if (inet_get_convert_csum(sk) && uh->check && !IS_UDPLITE(sk))
1077 	struct udphdr *uh;
1086 	uh = udp_hdr(skb);
1088 	ulen = ntohs(uh->len);
1099 		if (ulen < sizeof(*uh))
1107 			uh = udp_hdr(skb);
1111 	if (udp6_csum_init(skb, uh, proto))
1115 	sk = inet6_steal_sock(net, skb, sizeof(struct udphdr), saddr, uh->source, daddr, uh->dest,
1127 		if (!uh->check && !udp_get_no_check6_rx(sk)) {
1133 		ret = udp6_unicast_rcv_skb(sk, skb, uh);
1147 	sk = __udp6_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
1149 		if (!uh->check && !udp_get_no_check6_rx(sk))
1151 		return udp6_unicast_rcv_skb(sk, skb, uh);
1156 	if (!uh->check)
1177 			    saddr, ntohs(uh->source),
1179 			    daddr, ntohs(uh->dest));
1224 	const struct udphdr *uh;
1234 	uh = udp_hdr(skb);
1237 		sk = __udp6_lib_demux_lookup(net, uh->dest,
1239 					     uh->source, &ipv6_hdr(skb)->saddr,
1331 	struct udphdr *uh = udp_hdr(skb);
1339 		uh->check = ~csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP, 0);
1356 		uh->check = csum_ipv6_magic(saddr, daddr, len, IPPROTO_UDP,
1358 		if (uh->check == 0)
1359 			uh->check = CSUM_MANGLED_0;
1371 	struct udphdr *uh;
1377 	int datalen = len - sizeof(*uh);
1382 	uh = udp_hdr(skb);
1383 	uh->source = fl6->fl6_sport;
1384 	uh->dest = fl6->fl6_dport;
1385 	uh->len = htons(len);
1386 	uh->check = 0;
1433 	uh->check = csum_ipv6_magic(&fl6->saddr, &fl6->daddr,
1435 	if (uh->check == 0)
1436 		uh->check = CSUM_MANGLED_0;