net/ipv6/sit.c

191 		ipv6_addr_set(&t->ip6rd.prefix, htonl(0x20020000), 0, 0, 0);
192 		t->ip6rd.relay_prefix = 0;
193 		t->ip6rd.prefixlen = 16;
194 		t->ip6rd.relay_prefixlen = 0;
197 		memcpy(&t->ip6rd, &t0->ip6rd, sizeof(t->ip6rd));
633 	prefix_len = tunnel->ip6rd.prefixlen + 32
634 		- tunnel->ip6rd.relay_prefixlen;
812 	if (ipv6_prefix_equal(v6dst, &tunnel->ip6rd.prefix,
813 			      tunnel->ip6rd.prefixlen)) {
818 		pbw0 = tunnel->ip6rd.prefixlen >> 5;
819 		pbi0 = tunnel->ip6rd.prefixlen & 0x1f;
821 		d = tunnel->ip6rd.relay_prefixlen < 32 ?
823 		    tunnel->ip6rd.relay_prefixlen : 0;
825 		pbi1 = pbi0 - tunnel->ip6rd.relay_prefixlen;
830 		*v4dst = tunnel->ip6rd.relay_prefix | htonl(d);
1169 				   struct ip_tunnel_6rd *ip6rd)
1174 	if (ip6rd->relay_prefixlen > 32 ||
1175 	    ip6rd->prefixlen + (32 - ip6rd->relay_prefixlen) > 64)
1178 	ipv6_addr_prefix(&prefix, &ip6rd->prefix, ip6rd->prefixlen);
1179 	if (!ipv6_addr_equal(&prefix, &ip6rd->prefix))
1181 	if (ip6rd->relay_prefixlen)
1182 		relay_prefix = ip6rd->relay_prefix &
1184 				     (32 - ip6rd->relay_prefixlen));
1187 	if (relay_prefix != ip6rd->relay_prefix)
1190 	t->ip6rd.prefix = prefix;
1191 	t->ip6rd.relay_prefix = relay_prefix;
1192 	t->ip6rd.prefixlen = ip6rd->prefixlen;
1193 	t->ip6rd.relay_prefixlen = ip6rd->relay_prefixlen;
1204 	struct ip_tunnel_6rd ip6rd;
1214 	ip6rd.prefix = t->ip6rd.prefix;
1215 	ip6rd.relay_prefix = t->ip6rd.relay_prefix;
1216 	ip6rd.prefixlen = t->ip6rd.prefixlen;
1217 	ip6rd.relay_prefixlen = t->ip6rd.relay_prefixlen;
1218 	if (copy_to_user(data, &ip6rd, sizeof(ip6rd)))
1228 	struct ip_tunnel_6rd ip6rd;
1233 	if (copy_from_user(&ip6rd, data, sizeof(ip6rd)))
1237 		err = ipip6_tunnel_update_6rd(t, &ip6rd);
1519 				    struct ip_tunnel_6rd *ip6rd)
1522 	memset(ip6rd, 0, sizeof(*ip6rd));
1529 		ip6rd->prefix = nla_get_in6_addr(data[IFLA_IPTUN_6RD_PREFIX]);
1534 		ip6rd->relay_prefix =
1540 		ip6rd->prefixlen = nla_get_u16(data[IFLA_IPTUN_6RD_PREFIXLEN]);
1545 		ip6rd->relay_prefixlen =
1562 	struct ip_tunnel_6rd ip6rd;
1595 	if (ipip6_netlink_6rd_parms(data, &ip6rd)) {
1596 		err = ipip6_tunnel_update_6rd(nt, &ip6rd);
1615 	struct ip_tunnel_6rd ip6rd;
1646 	if (ipip6_netlink_6rd_parms(data, &ip6rd))
1647 		return ipip6_tunnel_update_6rd(t, &ip6rd);
1715 			     &tunnel->ip6rd.prefix) ||
1717 			    tunnel->ip6rd.relay_prefix) ||
1719 			tunnel->ip6rd.prefixlen) ||
1721 			tunnel->ip6rd.relay_prefixlen))