26 	struct udphdr *uh = udp_hdr(skb);  in __skb_udp_tunnel_segment()  local
44 		partial = (__force __wsum)uh->len;  in __skb_udp_tunnel_segment()
47 	partial = csum_sub(csum_unfold(uh->check), partial);  in __skb_udp_tunnel_segment()
117 		uh = udp_hdr(skb);  in __skb_udp_tunnel_segment()
124 			uh->len = htons(skb_shinfo(skb)->gso_size +  in __skb_udp_tunnel_segment()
126 					skb->head - (unsigned char *)uh);  in __skb_udp_tunnel_segment()
128 			uh->len = htons(len);  in __skb_udp_tunnel_segment()
134 		uh->check = ~csum_fold(csum_add(partial,  in __skb_udp_tunnel_segment()
138 			uh->check = gso_make_checksum(skb, ~uh->check);  in __skb_udp_tunnel_segment()
139 			if (uh->check == 0)  in __skb_udp_tunnel_segment()
140 				uh->check = CSUM_MANGLED_0;  in __skb_udp_tunnel_segment()
196 	struct udphdr *uh;  in __udp_gso_segment()  local
203 	if (gso_skb->len <= sizeof(*uh) + mss)  in __udp_gso_segment()
206 	skb_pull(gso_skb, sizeof(*uh));  in __udp_gso_segment()
228 	uh = udp_hdr(seg);  in __udp_gso_segment()
231 	newlen = htons(sizeof(*uh) + mss);  in __udp_gso_segment()
232 	check = csum16_add(csum16_sub(uh->check, uh->len), newlen);  in __udp_gso_segment()
244 		uh->len = newlen;  in __udp_gso_segment()
245 		uh->check = check;  in __udp_gso_segment()
250 			uh->check = gso_make_checksum(seg, ~check) ? :  in __udp_gso_segment()
254 		uh = udp_hdr(seg);  in __udp_gso_segment()
260 	check = csum16_add(csum16_sub(uh->check, uh->len), newlen);  in __udp_gso_segment()
262 	uh->len = newlen;  in __udp_gso_segment()
263 	uh->check = check;  in __udp_gso_segment()
268 		uh->check = gso_make_checksum(seg, ~check) ? : CSUM_MANGLED_0;  in __udp_gso_segment()
292 	struct udphdr *uh;  in udp4_ufo_fragment()  local
320 	uh = udp_hdr(skb);  in udp4_ufo_fragment()
323 	uh->check = 0;  in udp4_ufo_fragment()
325 	uh->check = udp_v4_check(skb->len, iph->saddr, iph->daddr, csum);  in udp4_ufo_fragment()
326 	if (uh->check == 0)  in udp4_ufo_fragment()
327 		uh->check = CSUM_MANGLED_0;  in udp4_ufo_fragment()
347 				struct udphdr *uh, udp_lookup_t lookup)  in udp_gro_receive()  argument
366 	sk = (*lookup)(skb, uh->source, uh->dest);  in udp_gro_receive()
384 		if ((*(u32 *)&uh->source != *(u32 *)&uh2->source) ||  in udp_gro_receive()
385 		    (!uh->check ^ !uh2->check)) {  in udp_gro_receive()
392 	skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr));  in udp_gro_receive()
406 	struct udphdr *uh = udp_gro_udphdr(skb);  in udp4_gro_receive()  local
408 	if (unlikely(!uh))  in udp4_gro_receive()
415 	if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check,  in udp4_gro_receive()
418 	else if (uh->check)  in udp4_gro_receive()
419 		skb_gro_checksum_try_convert(skb, IPPROTO_UDP, uh->check,  in udp4_gro_receive()
423 	return udp_gro_receive(head, skb, uh, udp4_lib_lookup_skb);  in udp4_gro_receive()
434 	struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);  in udp_gro_complete()  local
438 	uh->len = newlen;  in udp_gro_complete()
446 	sk = (*lookup)(skb, uh->source, uh->dest);  in udp_gro_complete()
462 	struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);  in udp4_gro_complete()  local
464 	if (uh->check) {  in udp4_gro_complete()
466 		uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr,  in udp4_gro_complete()