90 void ip_send_check(struct iphdr *iph)  in ip_send_check()  argument
92 	iph->check = 0;  in ip_send_check()
93 	iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);  in ip_send_check()
99 	struct iphdr *iph = ip_hdr(skb);  in __ip_local_out()  local
101 	iph->tot_len = htons(skb->len);  in __ip_local_out()
102 	ip_send_check(iph);  in __ip_local_out()
149 	struct iphdr *iph;  in ip_build_and_send_pkt()  local
154 	iph = ip_hdr(skb);  in ip_build_and_send_pkt()
155 	iph->version  = 4;  in ip_build_and_send_pkt()
156 	iph->ihl      = 5;  in ip_build_and_send_pkt()
157 	iph->tos      = inet->tos;  in ip_build_and_send_pkt()
158 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_build_and_send_pkt()
159 	iph->daddr    = (opt && opt->opt.srr ? opt->opt.faddr : daddr);  in ip_build_and_send_pkt()
160 	iph->saddr    = saddr;  in ip_build_and_send_pkt()
161 	iph->protocol = sk->sk_protocol;  in ip_build_and_send_pkt()
163 		iph->frag_off = htons(IP_DF);  in ip_build_and_send_pkt()
164 		iph->id = 0;  in ip_build_and_send_pkt()
166 		iph->frag_off = 0;  in ip_build_and_send_pkt()
167 		__ip_select_ident(net, iph, 1);  in ip_build_and_send_pkt()
171 		iph->ihl += opt->opt.optlen>>2;  in ip_build_and_send_pkt()
413 static void ip_copy_addrs(struct iphdr *iph, const struct flowi4 *fl4)  in ip_copy_addrs()  argument
417 	memcpy(&iph->saddr, &fl4->saddr,  in ip_copy_addrs()
429 	struct iphdr *iph;  in ip_queue_xmit()  local
476 	iph = ip_hdr(skb);  in ip_queue_xmit()
477 	*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));  in ip_queue_xmit()
479 		iph->frag_off = htons(IP_DF);  in ip_queue_xmit()
481 		iph->frag_off = 0;  in ip_queue_xmit()
482 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_queue_xmit()
483 	iph->protocol = sk->sk_protocol;  in ip_queue_xmit()
484 	ip_copy_addrs(iph, fl4);  in ip_queue_xmit()
489 		iph->ihl += inet_opt->opt.optlen >> 2;  in ip_queue_xmit()
539 	struct iphdr *iph = ip_hdr(skb);  in ip_fragment()  local
541 	if ((iph->frag_off & htons(IP_DF)) == 0)  in ip_fragment()
567 	struct iphdr *iph;  in ip_do_fragment()  local
585 	iph = ip_hdr(skb);  in ip_do_fragment()
595 	hlen = iph->ihl * 4;  in ip_do_fragment()
612 		    ip_is_fragment(iph) ||  in ip_do_fragment()
643 		iph->tot_len = htons(first_len);  in ip_do_fragment()
644 		iph->frag_off = htons(IP_MF);  in ip_do_fragment()
645 		ip_send_check(iph);  in ip_do_fragment()
655 				memcpy(skb_network_header(frag), iph, hlen);  in ip_do_fragment()
656 				iph = ip_hdr(frag);  in ip_do_fragment()
657 				iph->tot_len = htons(frag->len);  in ip_do_fragment()
662 				iph->frag_off = htons(offset>>3);  in ip_do_fragment()
664 					iph->frag_off |= htons(IP_MF);  in ip_do_fragment()
666 				ip_send_check(iph);  in ip_do_fragment()
705 	iph = ip_hdr(skb);  in ip_do_fragment()
716 	offset = (ntohs(iph->frag_off) & IP_OFFSET) << 3;  in ip_do_fragment()
717 	not_last_frag = iph->frag_off & htons(IP_MF);  in ip_do_fragment()
775 		iph = ip_hdr(skb2);  in ip_do_fragment()
776 		iph->frag_off = htons((offset >> 3));  in ip_do_fragment()
779 			iph->frag_off |= htons(IP_DF);  in ip_do_fragment()
795 			iph->frag_off |= htons(IP_MF);  in ip_do_fragment()
802 		iph->tot_len = htons(len + hlen);  in ip_do_fragment()
804 		ip_send_check(iph);  in ip_do_fragment()
1401 	struct iphdr *iph;  in __ip_make_skb()  local
1449 	iph = ip_hdr(skb);  in __ip_make_skb()
1450 	iph->version = 4;  in __ip_make_skb()
1451 	iph->ihl = 5;  in __ip_make_skb()
1452 	iph->tos = (cork->tos != -1) ? cork->tos : inet->tos;  in __ip_make_skb()
1453 	iph->frag_off = df;  in __ip_make_skb()
1454 	iph->ttl = ttl;  in __ip_make_skb()
1455 	iph->protocol = sk->sk_protocol;  in __ip_make_skb()
1456 	ip_copy_addrs(iph, fl4);  in __ip_make_skb()
1460 		iph->ihl += opt->optlen>>2;  in __ip_make_skb()
1473 	if (iph->protocol == IPPROTO_ICMP)  in __ip_make_skb()