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()
488 	if (tunnel->parms.o_flags & TUNNEL_SEQ)  in __gre_xmit()
492 	build_header(skb, tunnel->tun_hlen, tunnel->parms.o_flags,  in __gre_xmit()
493 		     proto, tunnel->parms.o_key, htonl(tunnel->o_seqno));  in __gre_xmit()
629 		tnl_params = &tunnel->parms.iph;  in ipgre_xmit()
632 	skb = gre_handle_offloads(skb, !!(tunnel->parms.o_flags&TUNNEL_CSUM));  in ipgre_xmit()
656 	skb = gre_handle_offloads(skb, !!(tunnel->parms.o_flags&TUNNEL_CSUM));  in gre_tap_xmit()
663 	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_TEB));  in gre_tap_xmit()
739 	greh->flags = tnl_flags_to_gre_flags(t->parms.o_flags);  in ipgre_header()
742 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
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()
779 					 t->parms.o_key,  in ipgre_open()
780 					 RT_TOS(t->parms.iph.tos),  in ipgre_open()
781 					 t->parms.link);  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()
840 	tunnel->tun_hlen = ip_gre_calc_hlen(tunnel->parms.o_flags);  in __gre_tunnel_init()
841 	tunnel->parms.iph.protocol = IPPROTO_GRE;  in __gre_tunnel_init()
853 	if (!(tunnel->parms.o_flags & TUNNEL_SEQ)) {  in __gre_tunnel_init()
867 	struct iphdr *iph = &tunnel->parms.iph;  in ipgre_tunnel_init()
961 				struct ip_tunnel_parm *parms)  in ipgre_netlink_parms()  argument
963 	memset(parms, 0, sizeof(*parms));  in ipgre_netlink_parms()
965 	parms->iph.protocol = IPPROTO_GRE;  in ipgre_netlink_parms()
971 		parms->link = nla_get_u32(data[IFLA_GRE_LINK]);  in ipgre_netlink_parms()
974 		parms->i_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_IFLAGS]));  in ipgre_netlink_parms()
977 		parms->o_flags = gre_flags_to_tnl_flags(nla_get_be16(data[IFLA_GRE_OFLAGS]));  in ipgre_netlink_parms()
980 		parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]);  in ipgre_netlink_parms()
983 		parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);  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()
1144 	struct ip_tunnel_parm *p = &t->parms;  in ipgre_fill_info()