196 	if (t->parms.iph.daddr == 0 ||  in ipgre_err()
197 	    ipv4_is_multicast(t->parms.iph.daddr))  in ipgre_err()
200 	if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)  in ipgre_err()
372 		tnl_params = &tunnel->parms.iph;  in __ipgre_rcv()
458 	if (tunnel->parms.o_flags & TUNNEL_SEQ)  in __gre_xmit()
463 			 tunnel->parms.o_flags, proto, tunnel->parms.o_key,  in __gre_xmit()
648 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
651 	if (gre_handle_offloads(skb, !!(tunnel->parms.o_flags & TUNNEL_CSUM)))  in ipgre_xmit()
692 		tunnel->parms.o_flags &= ~TUNNEL_SEQ;  in erspan_xmit()
694 		erspan_build_header(skb, ntohl(tunnel->parms.o_key),  in erspan_xmit()
699 		erspan_build_header_v2(skb, ntohl(tunnel->parms.o_key),  in erspan_xmit()
707 	tunnel->parms.o_flags &= ~TUNNEL_KEY;  in erspan_xmit()
708 	__gre_xmit(skb, dev, &tunnel->parms.iph, proto);  in erspan_xmit()
730 	if (gre_handle_offloads(skb, !!(tunnel->parms.o_flags & TUNNEL_CSUM)))  in gre_tap_xmit()
736 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
751 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in ipgre_link_update()
763 	if (!(tunnel->parms.o_flags & TUNNEL_SEQ)) {  in ipgre_link_update()
764 		if (!(tunnel->parms.o_flags & TUNNEL_CSUM) ||  in ipgre_link_update()
801 		t->parms.i_flags = p->i_flags;  in ipgre_tunnel_ctl()
802 		t->parms.o_flags = p->o_flags;  in ipgre_tunnel_ctl()
850 	greh->flags = gre_tnl_flags_to_gre_flags(t->parms.o_flags);  in ipgre_header()
853 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
883 	if (ipv4_is_multicast(t->parms.iph.daddr)) {  in ipgre_open()
888 					 t->parms.iph.daddr,  in ipgre_open()
889 					 t->parms.iph.saddr,  in ipgre_open()
890 					 t->parms.o_key,  in ipgre_open()
891 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
892 					 t->parms.link);  in ipgre_open()
900 		ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);  in ipgre_open()
909 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
913 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
951 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in __gre_tunnel_init()
952 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
955 	dev->needed_headroom = tunnel->hlen + sizeof(tunnel->parms.iph);  in __gre_tunnel_init()
960 	if (!(tunnel->parms.o_flags & TUNNEL_SEQ)) {  in __gre_tunnel_init()
965 		if (!(tunnel->parms.o_flags & TUNNEL_CSUM) ||  in __gre_tunnel_init()
981 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()
1126 				struct ip_tunnel_parm *parms,  in ipgre_netlink_parms()  argument
1131 	memset(parms, 0, sizeof(*parms));  in ipgre_netlink_parms()
1133 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
1139 		parms->link = nla_get_u32(data[IFLA_GRE_LINK]);  in ipgre_netlink_parms()
1142 		parms->i_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_IFLAGS]));  in ipgre_netlink_parms()
1145 		parms->o_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_OFLAGS]));  in ipgre_netlink_parms()
1148 		parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]);  in ipgre_netlink_parms()
1151 		parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);  in ipgre_netlink_parms()
1154 		parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);  in ipgre_netlink_parms()
1157 		parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);  in ipgre_netlink_parms()
1160 		parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);  in ipgre_netlink_parms()
1163 		parms->iph.tos = nla_get_u8(data[IFLA_GRE_TOS]);  in ipgre_netlink_parms()
1168 		parms->iph.frag_off = htons(IP_DF);  in ipgre_netlink_parms()
1179 		  && (parms->iph.frag_off & htons(IP_DF)))  in ipgre_netlink_parms()
1193 				struct ip_tunnel_parm *parms,  in erspan_netlink_parms()  argument
1199 	err = ipgre_netlink_parms(dev, data, tb, parms, fwmark);  in erspan_netlink_parms()
1298 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in erspan_tunnel_init()
1405 	t->parms.i_flags = p.i_flags;  in ipgre_changelink()
1406 	t->parms.o_flags = p.o_flags;  in ipgre_changelink()
1434 	t->parms.i_flags = p.i_flags;  in erspan_changelink()
1435 	t->parms.o_flags = p.o_flags;  in erspan_changelink()
1491 	struct ip_tunnel_parm *p = &t->parms;  in ipgre_fill_info()