87 void ip_send_check(struct iphdr *iph)  in ip_send_check()  argument
89 	iph->check = 0;  in ip_send_check()
90 	iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);  in ip_send_check()
96 	struct iphdr *iph = ip_hdr(skb);  in __ip_local_out_sk()  local
98 	iph->tot_len = htons(skb->len);  in __ip_local_out_sk()
99 	ip_send_check(iph);  in __ip_local_out_sk()
139 	struct iphdr *iph;  in ip_build_and_send_pkt()  local
144 	iph = ip_hdr(skb);  in ip_build_and_send_pkt()
145 	iph->version  = 4;  in ip_build_and_send_pkt()
146 	iph->ihl      = 5;  in ip_build_and_send_pkt()
147 	iph->tos      = inet->tos;  in ip_build_and_send_pkt()
149 		iph->frag_off = htons(IP_DF);  in ip_build_and_send_pkt()
151 		iph->frag_off = 0;  in ip_build_and_send_pkt()
152 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_build_and_send_pkt()
153 	iph->daddr    = (opt && opt->opt.srr ? opt->opt.faddr : daddr);  in ip_build_and_send_pkt()
154 	iph->saddr    = saddr;  in ip_build_and_send_pkt()
155 	iph->protocol = sk->sk_protocol;  in ip_build_and_send_pkt()
159 		iph->ihl += opt->opt.optlen>>2;  in ip_build_and_send_pkt()
361 static void ip_copy_addrs(struct iphdr *iph, const struct flowi4 *fl4)  in ip_copy_addrs()  argument
365 	memcpy(&iph->saddr, &fl4->saddr,  in ip_copy_addrs()
376 	struct iphdr *iph;  in ip_queue_xmit()  local
423 	iph = ip_hdr(skb);  in ip_queue_xmit()
424 	*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));  in ip_queue_xmit()
426 		iph->frag_off = htons(IP_DF);  in ip_queue_xmit()
428 		iph->frag_off = 0;  in ip_queue_xmit()
429 	iph->ttl      = ip_select_ttl(inet, &rt->dst);  in ip_queue_xmit()
430 	iph->protocol = sk->sk_protocol;  in ip_queue_xmit()
431 	ip_copy_addrs(iph, fl4);  in ip_queue_xmit()
436 		iph->ihl += inet_opt->opt.optlen >> 2;  in ip_queue_xmit()
492 	struct iphdr *iph;  in ip_fragment()  local
508 	iph = ip_hdr(skb);  in ip_fragment()
511 	if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) ||  in ip_fragment()
525 	hlen = iph->ihl * 4;  in ip_fragment()
546 		    ip_is_fragment(iph) ||  in ip_fragment()
577 		iph->tot_len = htons(first_len);  in ip_fragment()
578 		iph->frag_off = htons(IP_MF);  in ip_fragment()
579 		ip_send_check(iph);  in ip_fragment()
589 				memcpy(skb_network_header(frag), iph, hlen);  in ip_fragment()
590 				iph = ip_hdr(frag);  in ip_fragment()
591 				iph->tot_len = htons(frag->len);  in ip_fragment()
596 				iph->frag_off = htons(offset>>3);  in ip_fragment()
598 					iph->frag_off |= htons(IP_MF);  in ip_fragment()
600 				ip_send_check(iph);  in ip_fragment()
642 	iph = ip_hdr(skb);  in ip_fragment()
653 	offset = (ntohs(iph->frag_off) & IP_OFFSET) << 3;  in ip_fragment()
654 	not_last_frag = iph->frag_off & htons(IP_MF);  in ip_fragment()
712 		iph = ip_hdr(skb2);  in ip_fragment()
713 		iph->frag_off = htons((offset >> 3));  in ip_fragment()
729 			iph->frag_off |= htons(IP_MF);  in ip_fragment()
736 		iph->tot_len = htons(len + hlen);  in ip_fragment()
738 		ip_send_check(iph);  in ip_fragment()
1335 	struct iphdr *iph;  in __ip_make_skb()  local
1383 	iph = ip_hdr(skb);  in __ip_make_skb()
1384 	iph->version = 4;  in __ip_make_skb()
1385 	iph->ihl = 5;  in __ip_make_skb()
1386 	iph->tos = (cork->tos != -1) ? cork->tos : inet->tos;  in __ip_make_skb()
1387 	iph->frag_off = df;  in __ip_make_skb()
1388 	iph->ttl = ttl;  in __ip_make_skb()
1389 	iph->protocol = sk->sk_protocol;  in __ip_make_skb()
1390 	ip_copy_addrs(iph, fl4);  in __ip_make_skb()
1394 		iph->ihl += opt->optlen>>2;  in __ip_make_skb()
1407 	if (iph->protocol == IPPROTO_ICMP)  in __ip_make_skb()