265 	const struct iphdr *iph;  in ipgre_err()  local
304 	iph = (const struct iphdr *)(icmp_hdr(skb) + 1);  in ipgre_err()
306 			     iph->daddr, iph->saddr, tpi->key);  in ipgre_err()
311 	if (t->parms.iph.daddr == 0 ||  in ipgre_err()
312 	    ipv4_is_multicast(t->parms.iph.daddr))  in ipgre_err()
315 	if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)  in ipgre_err()
389 	const struct iphdr *iph;  in ipgre_rcv()  local
397 	iph = ip_hdr(skb);  in ipgre_rcv()
399 				  iph->saddr, iph->daddr, tpi->key);  in ipgre_rcv()
629 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
663 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
682 		if (p.iph.version != 4 || p.iph.protocol != IPPROTO_GRE ||  in ipgre_tunnel_ioctl()
683 		    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)) ||  in ipgre_tunnel_ioctl()
734 	struct iphdr *iph;  in ipgre_header()  local
737 	iph = (struct iphdr *)skb_push(skb, t->hlen + sizeof(*iph));  in ipgre_header()
738 	greh = (struct gre_base_hdr *)(iph+1);  in ipgre_header()
742 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
746 		memcpy(&iph->saddr, saddr, 4);  in ipgre_header()
748 		memcpy(&iph->daddr, daddr, 4);  in ipgre_header()
749 	if (iph->daddr)  in ipgre_header()
750 		return t->hlen + sizeof(*iph);  in ipgre_header()
752 	return -(t->hlen + sizeof(*iph));  in ipgre_header()
757 	const struct iphdr *iph = (const struct iphdr *) skb_mac_header(skb);  in ipgre_header_parse()  local
758 	memcpy(haddr, &iph->saddr, 4);  in ipgre_header_parse()
772 	if (ipv4_is_multicast(t->parms.iph.daddr)) {  in ipgre_open()
777 					 t->parms.iph.daddr,  in ipgre_open()
778 					 t->parms.iph.saddr,  in ipgre_open()
780 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
789 		ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);  in ipgre_open()
798 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
802 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
841 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
867 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()  local
871 	memcpy(dev->dev_addr, &iph->saddr, 4);  in ipgre_tunnel_init()
872 	memcpy(dev->broadcast, &iph->daddr, 4);  in ipgre_tunnel_init()
878 	if (iph->daddr) {  in ipgre_tunnel_init()
880 		if (ipv4_is_multicast(iph->daddr)) {  in ipgre_tunnel_init()
881 			if (!iph->saddr)  in ipgre_tunnel_init()
965 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
986 		parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);  in ipgre_netlink_parms()
989 		parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);  in ipgre_netlink_parms()
992 		parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);  in ipgre_netlink_parms()
995 		parms->iph.tos = nla_get_u8(data[IFLA_GRE_TOS]);  in ipgre_netlink_parms()
998 		parms->iph.frag_off = htons(IP_DF);  in ipgre_netlink_parms()
1151 	    nla_put_in_addr(skb, IFLA_GRE_LOCAL, p->iph.saddr) ||  in ipgre_fill_info()
1152 	    nla_put_in_addr(skb, IFLA_GRE_REMOTE, p->iph.daddr) ||  in ipgre_fill_info()
1153 	    nla_put_u8(skb, IFLA_GRE_TTL, p->iph.ttl) ||  in ipgre_fill_info()
1154 	    nla_put_u8(skb, IFLA_GRE_TOS, p->iph.tos) ||  in ipgre_fill_info()
1156 		       !!(p->iph.frag_off & htons(IP_DF))))  in ipgre_fill_info()