480 struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb,  in __udp_gso_segment()  argument
483 	struct sock *sk = gso_skb->sk;  in __udp_gso_segment()
493 	mss = skb_shinfo(gso_skb)->gso_size;  in __udp_gso_segment()
494 	if (gso_skb->len <= sizeof(*uh) + mss)  in __udp_gso_segment()
497 	if (unlikely(skb_checksum_start(gso_skb) !=  in __udp_gso_segment()
498 		     skb_transport_header(gso_skb) &&  in __udp_gso_segment()
499 		     !(skb_shinfo(gso_skb)->gso_type & SKB_GSO_FRAGLIST)))  in __udp_gso_segment()
505 	if (gso_skb->ip_summed != CHECKSUM_PARTIAL)  in __udp_gso_segment()
508 	if (skb_gso_ok(gso_skb, features | NETIF_F_GSO_ROBUST)) {  in __udp_gso_segment()
510 		skb_shinfo(gso_skb)->gso_segs = DIV_ROUND_UP(gso_skb->len - sizeof(*uh),  in __udp_gso_segment()
515 	if (skb_shinfo(gso_skb)->gso_type & SKB_GSO_FRAGLIST) {  in __udp_gso_segment()
517 		if (skb_pagelen(gso_skb) - sizeof(*uh) == skb_shinfo(gso_skb)->gso_size)  in __udp_gso_segment()
518 			return __udp_gso_segment_list(gso_skb, features, is_ipv6);  in __udp_gso_segment()
520 		ret = __skb_linearize(gso_skb);  in __udp_gso_segment()
525 		gso_skb->csum_start = skb_transport_header(gso_skb) - gso_skb->head;  in __udp_gso_segment()
526 		gso_skb->csum_offset = offsetof(struct udphdr, check);  in __udp_gso_segment()
527 		gso_skb->ip_summed = CHECKSUM_PARTIAL;  in __udp_gso_segment()
529 		uh = udp_hdr(gso_skb);  in __udp_gso_segment()
531 			uh->check = ~udp_v6_check(gso_skb->len,  in __udp_gso_segment()
532 						  &ipv6_hdr(gso_skb)->saddr,  in __udp_gso_segment()
533 						  &ipv6_hdr(gso_skb)->daddr, 0);  in __udp_gso_segment()
535 			uh->check = ~udp_v4_check(gso_skb->len,  in __udp_gso_segment()
536 						  ip_hdr(gso_skb)->saddr,  in __udp_gso_segment()
537 						  ip_hdr(gso_skb)->daddr, 0);  in __udp_gso_segment()
540 	skb_pull(gso_skb, sizeof(*uh));  in __udp_gso_segment()
543 	copy_dtor = gso_skb->destructor == sock_wfree;  in __udp_gso_segment()
545 		gso_skb->destructor = NULL;  in __udp_gso_segment()
546 		gso_skb->sk = NULL;  in __udp_gso_segment()
549 	segs = skb_segment(gso_skb, features);  in __udp_gso_segment()
552 			gso_skb->destructor = sock_wfree;  in __udp_gso_segment()
553 			gso_skb->sk = sk;  in __udp_gso_segment()
569 	skb_shinfo(seg)->tskey = skb_shinfo(gso_skb)->tskey;  in __udp_gso_segment()
571 			(skb_shinfo(gso_skb)->tx_flags & SKBTX_ANY_TSTAMP);  in __udp_gso_segment()
618 	if (gso_skb->ip_summed == CHECKSUM_NONE)  in __udp_gso_segment()
619 		gso_skb->ip_summed = CHECKSUM_UNNECESSARY;  in __udp_gso_segment()
623 		int delta = sum_truesize - gso_skb->truesize;  in __udp_gso_segment()