138 	const struct iphdr *iph;  in ipgre_err()  local
179 	iph = (const struct iphdr *)(icmp_hdr(skb) + 1);  in ipgre_err()
181 			     iph->daddr, iph->saddr, tpi->key);  in ipgre_err()
188            !ip6_err_gen_icmpv6_unreach(skb, iph->ihl * 4 + tpi->hdr_len,  in ipgre_err()
193 	if (t->parms.iph.daddr == 0 ||  in ipgre_err()
194 	    ipv4_is_multicast(t->parms.iph.daddr))  in ipgre_err()
197 	if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)  in ipgre_err()
223 	const struct iphdr *iph = (struct iphdr *)skb->data;  in gre_err()  local
230 			     iph->ihl * 4) < 0) {  in gre_err()
253 	const struct iphdr *iph;  in __ipgre_rcv()  local
256 	iph = ip_hdr(skb);  in __ipgre_rcv()
258 				  iph->saddr, iph->daddr, tpi->key);  in __ipgre_rcv()
491 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
522 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
540 		if (p.iph.version != 4 || p.iph.protocol != IPPROTO_GRE ||  in ipgre_tunnel_ioctl()
541 		    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)) ||  in ipgre_tunnel_ioctl()
592 	struct iphdr *iph;  in ipgre_header()  local
595 	iph = (struct iphdr *)skb_push(skb, t->hlen + sizeof(*iph));  in ipgre_header()
596 	greh = (struct gre_base_hdr *)(iph+1);  in ipgre_header()
600 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
604 		memcpy(&iph->saddr, saddr, 4);  in ipgre_header()
606 		memcpy(&iph->daddr, daddr, 4);  in ipgre_header()
607 	if (iph->daddr)  in ipgre_header()
608 		return t->hlen + sizeof(*iph);  in ipgre_header()
610 	return -(t->hlen + sizeof(*iph));  in ipgre_header()
615 	const struct iphdr *iph = (const struct iphdr *) skb_mac_header(skb);  in ipgre_header_parse()  local
616 	memcpy(haddr, &iph->saddr, 4);  in ipgre_header_parse()
630 	if (ipv4_is_multicast(t->parms.iph.daddr)) {  in ipgre_open()
635 					 t->parms.iph.daddr,  in ipgre_open()
636 					 t->parms.iph.saddr,  in ipgre_open()
638 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
647 		ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);  in ipgre_open()
656 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
660 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
699 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
732 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()  local
736 	memcpy(dev->dev_addr, &iph->saddr, 4);  in ipgre_tunnel_init()
737 	memcpy(dev->broadcast, &iph->daddr, 4);  in ipgre_tunnel_init()
743 	if (iph->daddr && !tunnel->collect_md) {  in ipgre_tunnel_init()
745 		if (ipv4_is_multicast(iph->daddr)) {  in ipgre_tunnel_init()
746 			if (!iph->saddr)  in ipgre_tunnel_init()
838 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
859 		parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);  in ipgre_netlink_parms()
862 		parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);  in ipgre_netlink_parms()
865 		parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);  in ipgre_netlink_parms()
868 		parms->iph.tos = nla_get_u8(data[IFLA_GRE_TOS]);  in ipgre_netlink_parms()
873 		parms->iph.frag_off = htons(IP_DF);  in ipgre_netlink_parms()
884 		  && (parms->iph.frag_off & htons(IP_DF)))  in ipgre_netlink_parms()
1047 	    nla_put_in_addr(skb, IFLA_GRE_LOCAL, p->iph.saddr) ||  in ipgre_fill_info()
1048 	    nla_put_in_addr(skb, IFLA_GRE_REMOTE, p->iph.daddr) ||  in ipgre_fill_info()
1049 	    nla_put_u8(skb, IFLA_GRE_TTL, p->iph.ttl) ||  in ipgre_fill_info()
1050 	    nla_put_u8(skb, IFLA_GRE_TOS, p->iph.tos) ||  in ipgre_fill_info()
1052 		       !!(p->iph.frag_off & htons(IP_DF))))  in ipgre_fill_info()