95 void ip_send_check(struct iphdr *iph)  in ip_send_check()  argument
97 	iph->check = 0;  in ip_send_check()
98 	iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);  in ip_send_check()
104 	struct iphdr *iph = ip_hdr(skb);  in __ip_local_out()  local
108 	iph_set_totlen(iph, skb->len);  in __ip_local_out()
109 	ip_send_check(iph);  in __ip_local_out()
158 	struct iphdr *iph;  in ip_build_and_send_pkt()  local
163 	iph = ip_hdr(skb);  in ip_build_and_send_pkt()
164 	iph->version  = 4;  in ip_build_and_send_pkt()
165 	iph->ihl      = 5;  in ip_build_and_send_pkt()
166 	iph->tos      = tos;  in ip_build_and_send_pkt()
167 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_build_and_send_pkt()
168 	iph->daddr    = (opt && opt->opt.srr ? opt->opt.faddr : daddr);  in ip_build_and_send_pkt()
169 	iph->saddr    = saddr;  in ip_build_and_send_pkt()
170 	iph->protocol = sk->sk_protocol;  in ip_build_and_send_pkt()
173 		iph->frag_off = htons(IP_DF);  in ip_build_and_send_pkt()
174 		iph->id = 0;  in ip_build_and_send_pkt()
176 		iph->frag_off = 0;  in ip_build_and_send_pkt()
181 			iph->id = (__force __be16)get_random_u16();  in ip_build_and_send_pkt()
183 			__ip_select_ident(net, iph, 1);  in ip_build_and_send_pkt()
187 		iph->ihl += opt->opt.optlen>>2;  in ip_build_and_send_pkt()
453 static void ip_copy_addrs(struct iphdr *iph, const struct flowi4 *fl4)  in ip_copy_addrs()  argument
458 	iph->saddr = fl4->saddr;  in ip_copy_addrs()
459 	iph->daddr = fl4->daddr;  in ip_copy_addrs()
471 	struct iphdr *iph;  in __ip_queue_xmit()  local
510 	iph = ip_hdr(skb);  in __ip_queue_xmit()
511 	*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (tos & 0xff));  in __ip_queue_xmit()
513 		iph->frag_off = htons(IP_DF);  in __ip_queue_xmit()
515 		iph->frag_off = 0;  in __ip_queue_xmit()
516 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in __ip_queue_xmit()
517 	iph->protocol = sk->sk_protocol;  in __ip_queue_xmit()
518 	ip_copy_addrs(iph, fl4);  in __ip_queue_xmit()
523 		iph->ihl += inet_opt->opt.optlen >> 2;  in __ip_queue_xmit()
580 	struct iphdr *iph = ip_hdr(skb);  in ip_fragment()  local
582 	if ((iph->frag_off & htons(IP_DF)) == 0)  in ip_fragment()
598 void ip_fraglist_init(struct sk_buff *skb, struct iphdr *iph,  in ip_fraglist_init()  argument
607 	iter->iph = iph;  in ip_fraglist_init()
612 	iph->tot_len = htons(first_len);  in ip_fraglist_init()
613 	iph->frag_off = htons(IP_MF);  in ip_fraglist_init()
614 	ip_send_check(iph);  in ip_fraglist_init()
621 	struct iphdr *iph = iter->iph;  in ip_fraglist_prepare()  local
629 	memcpy(skb_network_header(frag), iph, hlen);  in ip_fraglist_prepare()
630 	iter->iph = ip_hdr(frag);  in ip_fraglist_prepare()
631 	iph = iter->iph;  in ip_fraglist_prepare()
632 	iph->tot_len = htons(frag->len);  in ip_fraglist_prepare()
635 	iph->frag_off = htons(iter->offset >> 3);  in ip_fraglist_prepare()
637 		iph->frag_off |= htons(IP_MF);  in ip_fraglist_prepare()
639 	ip_send_check(iph);  in ip_fraglist_prepare()
647 	struct iphdr *iph = ip_hdr(skb);  in ip_frag_init()  local
657 	state->offset = (ntohs(iph->frag_off) & IP_OFFSET) << 3;  in ip_frag_init()
658 	state->not_last_frag = iph->frag_off & htons(IP_MF);  in ip_frag_init()
682 	struct iphdr *iph;  in ip_frag_next()  local
732 	iph = ip_hdr(skb2);  in ip_frag_next()
733 	iph->frag_off = htons((state->offset >> 3));  in ip_frag_next()
735 		iph->frag_off |= htons(IP_DF);  in ip_frag_next()
742 		iph->frag_off |= htons(IP_MF);  in ip_frag_next()
746 	iph->tot_len = htons(len + state->hlen);  in ip_frag_next()
748 	ip_send_check(iph);  in ip_frag_next()
764 	struct iphdr *iph;  in ip_do_fragment()  local
783 	iph = ip_hdr(skb);  in ip_do_fragment()
793 	hlen = iph->ihl * 4;  in ip_do_fragment()
811 		    ip_is_fragment(iph) ||  in ip_do_fragment()
836 		ip_fraglist_init(skb, iph, hlen, &iter);  in ip_do_fragment()
854 					ip_send_check(iter.iph);  in ip_do_fragment()
1407 	struct iphdr *iph;  in __ip_make_skb()  local
1456 	iph = ip_hdr(skb);  in __ip_make_skb()
1457 	iph->version = 4;  in __ip_make_skb()
1458 	iph->ihl = 5;  in __ip_make_skb()
1459 	iph->tos = (cork->tos != -1) ? cork->tos : READ_ONCE(inet->tos);  in __ip_make_skb()
1460 	iph->frag_off = df;  in __ip_make_skb()
1461 	iph->ttl = ttl;  in __ip_make_skb()
1462 	iph->protocol = sk->sk_protocol;  in __ip_make_skb()
1463 	ip_copy_addrs(iph, fl4);  in __ip_make_skb()
1467 		iph->ihl += opt->optlen >> 2;  in __ip_make_skb()
1484 	if (iph->protocol == IPPROTO_ICMP) {  in __ip_make_skb()