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. 27struct 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