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()
457 	__be16 flags = tunnel->parms.o_flags;  in __gre_xmit()
461 			 flags, proto, tunnel->parms.o_key,  in __gre_xmit()
650 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
653 	if (gre_handle_offloads(skb, !!(tunnel->parms.o_flags & TUNNEL_CSUM)))  in ipgre_xmit()
694 		tunnel->parms.o_flags &= ~TUNNEL_SEQ;  in erspan_xmit()
696 		erspan_build_header(skb, ntohl(tunnel->parms.o_key),  in erspan_xmit()
701 		erspan_build_header_v2(skb, ntohl(tunnel->parms.o_key),  in erspan_xmit()
709 	tunnel->parms.o_flags &= ~TUNNEL_KEY;  in erspan_xmit()
710 	__gre_xmit(skb, dev, &tunnel->parms.iph, proto);  in erspan_xmit()
732 	if (gre_handle_offloads(skb, !!(tunnel->parms.o_flags & TUNNEL_CSUM)))  in gre_tap_xmit()
738 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
753 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in ipgre_link_update()
765 	if (!(tunnel->parms.o_flags & TUNNEL_SEQ)) {  in ipgre_link_update()
766 		if (!(tunnel->parms.o_flags & TUNNEL_CSUM) ||  in ipgre_link_update()
803 		t->parms.i_flags = p->i_flags;  in ipgre_tunnel_ctl()
804 		t->parms.o_flags = p->o_flags;  in ipgre_tunnel_ctl()
852 	greh->flags = gre_tnl_flags_to_gre_flags(t->parms.o_flags);  in ipgre_header()
855 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
885 	if (ipv4_is_multicast(t->parms.iph.daddr)) {  in ipgre_open()
890 					 t->parms.iph.daddr,  in ipgre_open()
891 					 t->parms.iph.saddr,  in ipgre_open()
892 					 t->parms.o_key,  in ipgre_open()
893 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
894 					 t->parms.link);  in ipgre_open()
902 		ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);  in ipgre_open()
911 	if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
915 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
953 	tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);  in __gre_tunnel_init()
954 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
957 	dev->needed_headroom = tunnel->hlen + sizeof(tunnel->parms.iph);  in __gre_tunnel_init()
962 	if (!(tunnel->parms.o_flags & TUNNEL_SEQ)) {  in __gre_tunnel_init()
967 		if (!(tunnel->parms.o_flags & TUNNEL_CSUM) ||  in __gre_tunnel_init()
983 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()
1128 				struct ip_tunnel_parm *parms,  in ipgre_netlink_parms()  argument
1133 	memset(parms, 0, sizeof(*parms));  in ipgre_netlink_parms()
1135 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
1141 		parms->link = nla_get_u32(data[IFLA_GRE_LINK]);  in ipgre_netlink_parms()
1144 		parms->i_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_IFLAGS]));  in ipgre_netlink_parms()
1147 		parms->o_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_OFLAGS]));  in ipgre_netlink_parms()
1150 		parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]);  in ipgre_netlink_parms()
1153 		parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);  in ipgre_netlink_parms()
1156 		parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);  in ipgre_netlink_parms()
1159 		parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);  in ipgre_netlink_parms()
1162 		parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);  in ipgre_netlink_parms()
1165 		parms->iph.tos = nla_get_u8(data[IFLA_GRE_TOS]);  in ipgre_netlink_parms()
1170 		parms->iph.frag_off = htons(IP_DF);  in ipgre_netlink_parms()
1181 		  && (parms->iph.frag_off & htons(IP_DF)))  in ipgre_netlink_parms()
1195 				struct ip_tunnel_parm *parms,  in erspan_netlink_parms()  argument
1201 	err = ipgre_netlink_parms(dev, data, tb, parms, fwmark);  in erspan_netlink_parms()
1300 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in erspan_tunnel_init()
1407 	t->parms.i_flags = p.i_flags;  in ipgre_changelink()
1408 	t->parms.o_flags = p.o_flags;  in ipgre_changelink()
1436 	t->parms.i_flags = p.i_flags;  in erspan_changelink()
1437 	t->parms.o_flags = p.o_flags;  in erspan_changelink()
1493 	struct ip_tunnel_parm *p = &t->parms;  in ipgre_fill_info()
1542 			t->parms.o_flags |= TUNNEL_KEY;  in erspan_fill_info()