1 // 2 // Copyright (C) 2014 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef SHILL_NET_NDISC_H_ 18 #define SHILL_NET_NDISC_H_ 19 20 // Neighbor discovery related definitions. This is needed because kernel 21 // currently does not export these definitions to the user space. 22 23 // Netlink multicast group for neighbor discovery user option message. 24 #define RTMGRP_ND_USEROPT 0x80000 25 26 // Neighbor Discovery user option header definition. 27 struct NDUserOptionHeader { 28 NDUserOptionHeader() { 29 memset(this, 0, sizeof(*this)); 30 } 31 uint8_t type; 32 uint8_t length; 33 uint16_t reserved; 34 uint32_t lifetime; 35 } __attribute__((__packed__)); 36 37 // Neighbor Discovery user option type definition. 38 #define ND_OPT_RDNSS 25 /* RFC 5006 */ 39 #define ND_OPT_DNSSL 31 /* RFC 6106 */ 40 41 // Infinity lifetime. 42 #define ND_OPT_LIFETIME_INFINITY 0xFFFFFFFF 43 44 #endif // SHILL_NET_NDISC_H_ 45
