143 	const struct iphdr *iph;  in ipgre_err()  local
181 	iph = (const struct iphdr *)(icmp_hdr(skb) + 1);  in ipgre_err()
183 			     iph->daddr, iph->saddr, tpi->key);  in ipgre_err()
188 	if (t->parms.iph.daddr == 0 ||  in ipgre_err()
189 	    ipv4_is_multicast(t->parms.iph.daddr))  in ipgre_err()
192 	if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)  in ipgre_err()
207 	const struct iphdr *iph;  in ipgre_rcv()  local
215 	iph = ip_hdr(skb);  in ipgre_rcv()
217 				  iph->saddr, iph->daddr, tpi->key);  in ipgre_rcv()
272 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
302 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
322 		if (p.iph.version != 4 || p.iph.protocol != IPPROTO_GRE ||  in ipgre_tunnel_ioctl()
323 		    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)) ||  in ipgre_tunnel_ioctl()
374 	struct iphdr *iph;  in ipgre_header()  local
377 	iph = (struct iphdr *)skb_push(skb, t->hlen + sizeof(*iph));  in ipgre_header()
378 	greh = (struct gre_base_hdr *)(iph+1);  in ipgre_header()
382 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
386 		memcpy(&iph->saddr, saddr, 4);  in ipgre_header()
388 		memcpy(&iph->daddr, daddr, 4);  in ipgre_header()
389 	if (iph->daddr)  in ipgre_header()
390 		return t->hlen + sizeof(*iph);  in ipgre_header()
392 	return -(t->hlen + sizeof(*iph));  in ipgre_header()
397 	const struct iphdr *iph = (const struct iphdr *) skb_mac_header(skb);  in ipgre_header_parse()  local
398 	memcpy(haddr, &iph->saddr, 4);  in ipgre_header_parse()
412 	if (ipv4_is_multicast(t->parms.iph.daddr)) {  in ipgre_open()
417 					 t->parms.iph.daddr,  in ipgre_open()
418 					 t->parms.iph.saddr,  in ipgre_open()
420 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
429 		ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);  in ipgre_open()
438 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
442 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
481 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
507 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()  local
511 	memcpy(dev->dev_addr, &iph->saddr, 4);  in ipgre_tunnel_init()
512 	memcpy(dev->broadcast, &iph->daddr, 4);  in ipgre_tunnel_init()
518 	if (iph->daddr) {  in ipgre_tunnel_init()
520 		if (ipv4_is_multicast(iph->daddr)) {  in ipgre_tunnel_init()
521 			if (!iph->saddr)  in ipgre_tunnel_init()
604 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
625 		parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);  in ipgre_netlink_parms()
628 		parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);  in ipgre_netlink_parms()
631 		parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);  in ipgre_netlink_parms()
634 		parms->iph.tos = nla_get_u8(data[IFLA_GRE_TOS]);  in ipgre_netlink_parms()
637 		parms->iph.frag_off = htons(IP_DF);  in ipgre_netlink_parms()
781 	    nla_put_in_addr(skb, IFLA_GRE_LOCAL, p->iph.saddr) ||  in ipgre_fill_info()
782 	    nla_put_in_addr(skb, IFLA_GRE_REMOTE, p->iph.daddr) ||  in ipgre_fill_info()
783 	    nla_put_u8(skb, IFLA_GRE_TTL, p->iph.ttl) ||  in ipgre_fill_info()
784 	    nla_put_u8(skb, IFLA_GRE_TOS, p->iph.tos) ||  in ipgre_fill_info()
786 		       !!(p->iph.frag_off & htons(IP_DF))))  in ipgre_fill_info()