629 	struct udphdr *uh = (struct udphdr *)(skb->data+(iph->ihl<<2));  in __udp4_lib_err()  local
637 	sk = __udp4_lib_lookup(net, iph->daddr, uh->dest,  in __udp4_lib_err()
638 			iph->saddr, uh->source, skb->dev->ifindex, udptable);  in __udp4_lib_err()
688 		ip_icmp_error(sk, skb, err, uh->dest, info, (u8 *)(uh+1));  in __udp4_lib_err()
725 	struct udphdr *uh = udp_hdr(skb);  in udp4_hwcsum()  local
737 		uh->check = ~csum_tcpudp_magic(src, dst, len,  in udp4_hwcsum()
755 		uh->check = csum_tcpudp_magic(src, dst, len, IPPROTO_UDP, csum);  in udp4_hwcsum()
756 		if (uh->check == 0)  in udp4_hwcsum()
757 			uh->check = CSUM_MANGLED_0;  in udp4_hwcsum()
768 	struct udphdr *uh = udp_hdr(skb);  in udp_set_csum()  local
771 		uh->check = 0;  in udp_set_csum()
773 		uh->check = ~udp_v4_check(len, saddr, daddr, 0);  in udp_set_csum()
782 		uh->check = ~udp_v4_check(len, saddr, daddr, 0);  in udp_set_csum()
788 		uh->check = 0;  in udp_set_csum()
790 		uh->check = udp_v4_check(len, saddr, daddr, csum);  in udp_set_csum()
791 		if (uh->check == 0)  in udp_set_csum()
792 			uh->check = CSUM_MANGLED_0;  in udp_set_csum()
803 	struct udphdr *uh;  in udp_send_skb()  local
813 	uh = udp_hdr(skb);  in udp_send_skb()
814 	uh->source = inet->inet_sport;  in udp_send_skb()
815 	uh->dest = fl4->fl4_dport;  in udp_send_skb()
816 	uh->len = htons(len);  in udp_send_skb()
817 	uh->check = 0;  in udp_send_skb()
836 	uh->check = csum_tcpudp_magic(fl4->saddr, fl4->daddr, len,  in udp_send_skb()
838 	if (uh->check == 0)  in udp_send_skb()
839 		uh->check = CSUM_MANGLED_0;  in udp_send_skb()
1667 				    struct udphdr  *uh,  in __udp4_lib_mcast_deliver()  argument
1674 	unsigned short hnum = ntohs(uh->dest);  in __udp4_lib_mcast_deliver()
1693 					uh->dest, daddr,  in __udp4_lib_mcast_deliver()
1694 					uh->source, saddr,  in __udp4_lib_mcast_deliver()
1733 static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,  in udp4_csum_init()  argument
1742 		err = udplite_checksum_init(skb, uh);  in udp4_csum_init()
1747 	return skb_checksum_init_zero_check(skb, proto, uh->check,  in udp4_csum_init()
1759 	struct udphdr *uh;  in __udp4_lib_rcv()  local
1771 	uh   = udp_hdr(skb);  in __udp4_lib_rcv()
1772 	ulen = ntohs(uh->len);  in __udp4_lib_rcv()
1781 		if (ulen < sizeof(*uh) || pskb_trim_rcsum(skb, ulen))  in __udp4_lib_rcv()
1783 		uh = udp_hdr(skb);  in __udp4_lib_rcv()
1786 	if (udp4_csum_init(skb, uh, proto))  in __udp4_lib_rcv()
1808 		return __udp4_lib_mcast_deliver(net, skb, uh,  in __udp4_lib_rcv()
1811 	sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable);  in __udp4_lib_rcv()
1815 		if (inet_get_convert_csum(sk) && uh->check && !IS_UDPLITE(sk))  in __udp4_lib_rcv()
1816 			skb_checksum_try_convert(skb, IPPROTO_UDP, uh->check,  in __udp4_lib_rcv()
1851 			    &saddr, ntohs(uh->source),  in __udp4_lib_rcv()
1853 			    &daddr, ntohs(uh->dest));  in __udp4_lib_rcv()
1863 			    &saddr, ntohs(uh->source), &daddr, ntohs(uh->dest),  in __udp4_lib_rcv()
1973 	const struct udphdr *uh;  in udp_v4_early_demux()  local
1984 	uh = udp_hdr(skb);  in udp_v4_early_demux()
2001 		sk = __udp4_lib_mcast_demux_lookup(net, uh->dest, iph->daddr,  in udp_v4_early_demux()
2002 						   uh->source, iph->saddr, dif);  in udp_v4_early_demux()
2004 		sk = __udp4_lib_demux_lookup(net, uh->dest, iph->daddr,  in udp_v4_early_demux()
2005 					     uh->source, iph->saddr, dif);  in udp_v4_early_demux()