92 void ip_send_check(struct iphdr *iph)  in ip_send_check()  argument
94 	iph->check = 0;  in ip_send_check()
95 	iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);  in ip_send_check()
101 	struct iphdr *iph = ip_hdr(skb);  in __ip_local_out()  local
103 	iph->tot_len = htons(skb->len);  in __ip_local_out()
104 	ip_send_check(iph);  in __ip_local_out()
141 	struct iphdr *iph;  in ip_build_and_send_pkt()  local
146 	iph = ip_hdr(skb);  in ip_build_and_send_pkt()
147 	iph->version  = 4;  in ip_build_and_send_pkt()
148 	iph->ihl      = 5;  in ip_build_and_send_pkt()
149 	iph->tos      = inet->tos;  in ip_build_and_send_pkt()
150 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_build_and_send_pkt()
151 	iph->daddr    = (opt && opt->opt.srr ? opt->opt.faddr : daddr);  in ip_build_and_send_pkt()
152 	iph->saddr    = saddr;  in ip_build_and_send_pkt()
153 	iph->protocol = sk->sk_protocol;  in ip_build_and_send_pkt()
155 		iph->frag_off = htons(IP_DF);  in ip_build_and_send_pkt()
156 		iph->id = 0;  in ip_build_and_send_pkt()
158 		iph->frag_off = 0;  in ip_build_and_send_pkt()
159 		__ip_select_ident(net, iph, 1);  in ip_build_and_send_pkt()
163 		iph->ihl += opt->opt.optlen>>2;  in ip_build_and_send_pkt()
371 static void ip_copy_addrs(struct iphdr *iph, const struct flowi4 *fl4)  in ip_copy_addrs()  argument
375 	memcpy(&iph->saddr, &fl4->saddr,  in ip_copy_addrs()
387 	struct iphdr *iph;  in ip_queue_xmit()  local
434 	iph = ip_hdr(skb);  in ip_queue_xmit()
435 	*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));  in ip_queue_xmit()
437 		iph->frag_off = htons(IP_DF);  in ip_queue_xmit()
439 		iph->frag_off = 0;  in ip_queue_xmit()
440 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_queue_xmit()
441 	iph->protocol = sk->sk_protocol;  in ip_queue_xmit()
442 	ip_copy_addrs(iph, fl4);  in ip_queue_xmit()
447 		iph->ihl += inet_opt->opt.optlen >> 2;  in ip_queue_xmit()
497 	struct iphdr *iph = ip_hdr(skb);  in ip_fragment()  local
499 	if ((iph->frag_off & htons(IP_DF)) == 0)  in ip_fragment()
525 	struct iphdr *iph;  in ip_do_fragment()  local
546 	iph = ip_hdr(skb);  in ip_do_fragment()
556 	hlen = iph->ihl * 4;  in ip_do_fragment()
573 		    ip_is_fragment(iph) ||  in ip_do_fragment()
604 		iph->tot_len = htons(first_len);  in ip_do_fragment()
605 		iph->frag_off = htons(IP_MF);  in ip_do_fragment()
606 		ip_send_check(iph);  in ip_do_fragment()
616 				memcpy(skb_network_header(frag), iph, hlen);  in ip_do_fragment()
617 				iph = ip_hdr(frag);  in ip_do_fragment()
618 				iph->tot_len = htons(frag->len);  in ip_do_fragment()
623 				iph->frag_off = htons(offset>>3);  in ip_do_fragment()
625 					iph->frag_off |= htons(IP_MF);  in ip_do_fragment()
627 				ip_send_check(iph);  in ip_do_fragment()
666 	iph = ip_hdr(skb);  in ip_do_fragment()
677 	offset = (ntohs(iph->frag_off) & IP_OFFSET) << 3;  in ip_do_fragment()
678 	not_last_frag = iph->frag_off & htons(IP_MF);  in ip_do_fragment()
736 		iph = ip_hdr(skb2);  in ip_do_fragment()
737 		iph->frag_off = htons((offset >> 3));  in ip_do_fragment()
740 			iph->frag_off |= htons(IP_DF);  in ip_do_fragment()
756 			iph->frag_off |= htons(IP_MF);  in ip_do_fragment()
763 		iph->tot_len = htons(len + hlen);  in ip_do_fragment()
765 		ip_send_check(iph);  in ip_do_fragment()
1359 	struct iphdr *iph;  in __ip_make_skb()  local
1407 	iph = ip_hdr(skb);  in __ip_make_skb()
1408 	iph->version = 4;  in __ip_make_skb()
1409 	iph->ihl = 5;  in __ip_make_skb()
1410 	iph->tos = (cork->tos != -1) ? cork->tos : inet->tos;  in __ip_make_skb()
1411 	iph->frag_off = df;  in __ip_make_skb()
1412 	iph->ttl = ttl;  in __ip_make_skb()
1413 	iph->protocol = sk->sk_protocol;  in __ip_make_skb()
1414 	ip_copy_addrs(iph, fl4);  in __ip_make_skb()
1418 		iph->ihl += opt->optlen>>2;  in __ip_make_skb()
1431 	if (iph->protocol == IPPROTO_ICMP)  in __ip_make_skb()