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      1 //
      2 // Copyright (C) 2012 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 #include "shill/net/rtnl_message.h"
     18 
     19 #include <sys/socket.h>
     20 #include <linux/if.h>  // NOLINT(build/include_alpha) - needs sockaddr.
     21 #include <linux/netlink.h>
     22 #include <linux/rtnetlink.h>
     23 
     24 #include <string>
     25 
     26 #include <gtest/gtest.h>
     27 
     28 #include "shill/net/byte_string.h"
     29 #include "shill/net/ip_address.h"
     30 
     31 using std::string;
     32 using testing::Test;
     33 
     34 namespace shill {
     35 
     36 namespace {
     37 
     38 // These test strings were generated by cutting up the output of the
     39 // "rtmon" utility into individual strings.  This tool outputs the raw
     40 // RTNL packet contents sent by the kernel.  The comments above each
     41 // of these strings is the markup that the "ip monitor" command
     42 // outputs for each of these RTNL packets.
     43 
     44 
     45 // 2: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
     46 //     link/ether c0:f8:da:05:03:0b brd ff:ff:ff:ff:ff:ff
     47 
     48 const int kNewLinkMessageWlan0InterfaceIndex = 2;
     49 const unsigned int kNewLinkMessageWlan0InterfaceFlags =
     50     IFF_BROADCAST | IFF_MULTICAST | IFF_UP | IFF_LOWER_UP | IFF_RUNNING;
     51 const unsigned int kNewLinkMessageWlan0InterfaceFlagsChange = 0;
     52 const uint32_t kNewLinkMessageWlan0MTU = 1500;
     53 const char kNewLinkMessageWlan0MACAddress[] = "\xc0\xf8\xda\x05\x03\x0b";
     54 const char kNewLinkMessageWlan0InterfaceName[] = "wlan0";
     55 const char kNewLinkMessageWlan0Qdisc[] = "mq";
     56 const int kNewLinkMessageWlan0OperState = IF_OPER_UP;
     57 
     58 const unsigned char kNewLinkMessageWlan0[] = {
     59   0xe0, 0x03, 0x00, 0x00, 0x10, 0x00, 0x02, 0x00,
     60   0x53, 0x18, 0x1f, 0x4e, 0xac, 0x77, 0x00, 0x00,
     61   0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00,
     62   0x43, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
     63   0x0a, 0x00, 0x03, 0x00, 0x77, 0x6c, 0x61, 0x6e,
     64   0x30, 0x00, 0x00, 0x00, 0x08, 0x00, 0x0d, 0x00,
     65   0xe8, 0x03, 0x00, 0x00, 0x05, 0x00, 0x10, 0x00,
     66   0x06, 0x00, 0x00, 0x00, 0x05, 0x00, 0x11, 0x00,
     67   0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x04, 0x00,
     68   0xdc, 0x05, 0x00, 0x00, 0x07, 0x00, 0x06, 0x00,
     69   0x6d, 0x71, 0x00, 0x00, 0x20, 0x00, 0x0e, 0x00,
     70   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     71   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     72   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     73   0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x01, 0x00,
     74   0xc0, 0xf8, 0xda, 0x05, 0x03, 0x0b, 0x00, 0x00,
     75   0x0a, 0x00, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff,
     76   0xff, 0xff, 0x00, 0x00, 0x60, 0x00, 0x07, 0x00,
     77   0xa6, 0x65, 0x0f, 0x00, 0xa6, 0x0b, 0x00, 0x00,
     78   0xd2, 0x29, 0x61, 0x06, 0xd7, 0x25, 0x07, 0x00,
     79   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     80   0x84, 0x53, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
     81   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     82   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     83   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     84   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     85   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     86   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     87   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     88   0x00, 0x00, 0x00, 0x00, 0xbc, 0x00, 0x17, 0x00,
     89   0xa6, 0x65, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00,
     90   0xa6, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     91   0xd2, 0x29, 0x61, 0x06, 0x00, 0x00, 0x00, 0x00,
     92   0xd7, 0x25, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
     93   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     94   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     95   0x84, 0x53, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
     96   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     97   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     98   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     99   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    100   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    101   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    102   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    103   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    104   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    105   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    106   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    107   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    108   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    109   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    110   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    111   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    112   0x08, 0x00, 0x15, 0x00, 0x00, 0x00, 0x00, 0x00,
    113   0x30, 0x02, 0x1a, 0x00, 0x6c, 0x00, 0x02, 0x00,
    114   0x68, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
    115   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    116   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    117   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    118   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    119   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    120   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    121   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    122   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    123   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    124   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    125   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    126   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    127   0xc0, 0x01, 0x0a, 0x00, 0x08, 0x00, 0x01, 0x00,
    128   0x10, 0x00, 0x00, 0x80, 0x14, 0x00, 0x05, 0x00,
    129   0xff, 0xff, 0x00, 0x00, 0x22, 0x05, 0x00, 0x00,
    130   0x4f, 0x53, 0x00, 0x00, 0xe8, 0x03, 0x00, 0x00,
    131   0x78, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
    132   0x40, 0x00, 0x00, 0x00, 0xdc, 0x05, 0x00, 0x00,
    133   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    134   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    135   0x03, 0x00, 0x00, 0x00, 0xa0, 0x0f, 0x00, 0x00,
    136   0xe8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    137   0x80, 0x3a, 0x09, 0x00, 0x80, 0x51, 0x01, 0x00,
    138   0x05, 0x00, 0x00, 0x00, 0x58, 0x02, 0x00, 0x00,
    139   0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    140   0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
    141   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    142   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    143   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    144   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    145   0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    146   0xfc, 0x00, 0x03, 0x00, 0x1f, 0x00, 0x00, 0x00,
    147   0x00, 0x00, 0x00, 0x00, 0x15, 0xe6, 0x04, 0x00,
    148   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    149   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    150   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    151   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    152   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    153   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    154   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    155   0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
    156   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    157   0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
    158   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    159   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    160   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    161   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    162   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    163   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    164   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    165   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    166   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    167   0x00, 0x00, 0x00, 0x00, 0x15, 0xe6, 0x04, 0x00,
    168   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
    169   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    170   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    171   0x00, 0x00, 0x00, 0x00, 0x9b, 0x95, 0xb9, 0x01,
    172   0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00,
    173   0x00, 0x00, 0x00, 0x00, 0x9b, 0x95, 0xb9, 0x01,
    174   0x00, 0x00, 0x00, 0x00, 0x18, 0x02, 0x00, 0x00,
    175   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    176   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    177   0x00, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x06, 0x00,
    178   0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    179   0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    180   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    181   0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    182   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    183 };
    184 
    185 
    186 // Deleted 8: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
    187 //    link/ether 68:7f:74:ba:ef:c7 brd ff:ff:ff:ff:ff:ff
    188 
    189 const int kDelLinkMessageEth0InterfaceIndex = 8;
    190 const unsigned int kDelLinkMessageEth0InterfaceFlags =
    191     IFF_BROADCAST | IFF_MULTICAST;
    192 const unsigned int kDelLinkMessageEth0InterfaceFlagsChange = 0xffffffff;
    193 const uint32_t kDelLinkMessageEth0MTU = 1500;
    194 const char kDelLinkMessageEth0MACAddress[] = "\x68\x7f\x74\xba\xef\xc7";
    195 const char kDelLinkMessageEth0InterfacName[] = "eth0";
    196 const char kDelLinkMessageEth0Qdisc[] = "noop";
    197 const int kDelLinkMessageEth0OperState = IF_OPER_DOWN;
    198 
    199 const unsigned char kDelLinkMessageEth0[] = {
    200   0xb8, 0x01, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00,
    201   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    202   0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00,
    203   0x02, 0x10, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
    204   0x09, 0x00, 0x03, 0x00, 0x65, 0x74, 0x68, 0x30,
    205   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x0d, 0x00,
    206   0xe8, 0x03, 0x00, 0x00, 0x05, 0x00, 0x10, 0x00,
    207   0x02, 0x00, 0x00, 0x00, 0x05, 0x00, 0x11, 0x00,
    208   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x04, 0x00,
    209   0xdc, 0x05, 0x00, 0x00, 0x09, 0x00, 0x06, 0x00,
    210   0x6e, 0x6f, 0x6f, 0x70, 0x00, 0x00, 0x00, 0x00,
    211   0x20, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00,
    212   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    213   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    214   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    215   0x0a, 0x00, 0x01, 0x00, 0x68, 0x7f, 0x74, 0xba,
    216   0xef, 0xc7, 0x00, 0x00, 0x0a, 0x00, 0x02, 0x00,
    217   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00,
    218   0x60, 0x00, 0x07, 0x00, 0x09, 0x00, 0x00, 0x00,
    219   0x0e, 0x00, 0x00, 0x00, 0xfa, 0x05, 0x00, 0x00,
    220   0x34, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    221   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    222   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    223   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    224   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    225   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    226   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    227   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    228   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    229   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    230   0xbc, 0x00, 0x17, 0x00, 0x09, 0x00, 0x00, 0x00,
    231   0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x00,
    232   0x00, 0x00, 0x00, 0x00, 0xfa, 0x05, 0x00, 0x00,
    233   0x00, 0x00, 0x00, 0x00, 0x34, 0x06, 0x00, 0x00,
    234   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    235   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    236   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    237   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    238   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    239   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    240   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    241   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    242   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    243   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    244   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    245   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    246   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    247   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    248   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    249   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    250   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    251   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    252   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    253   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x15, 0x00,
    254   0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x1a, 0x00,
    255 };
    256 
    257 // 8: if8    inet 192.168.10.100/24 brd 192.168.10.255 scope global eth0
    258 
    259 const int kNewAddrIPV4InterfaceIndex = 8;
    260 const char kNewAddrIPV4Address[] = "192.168.10.100";
    261 const int kNewAddrIPV4AddressPrefix = 24;
    262 const unsigned char kNewAddrIPV4Scope = RT_SCOPE_UNIVERSE;
    263 
    264 const unsigned char kNewAddrIPV4[] = {
    265   0x3c, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00,
    266   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    267   0x02, 0x18, 0x80, 0x00, 0x08, 0x00, 0x00, 0x00,
    268   0x08, 0x00, 0x01, 0x00, 0xc0, 0xa8, 0x0a, 0x64,
    269   0x08, 0x00, 0x02, 0x00, 0xc0, 0xa8, 0x0a, 0x64,
    270   0x08, 0x00, 0x04, 0x00, 0xc0, 0xa8, 0x0a, 0xff,
    271   0x09, 0x00, 0x03, 0x00, 0x65, 0x74, 0x68, 0x30,
    272   0x00, 0x00, 0x00, 0x00,
    273 };
    274 
    275 // Deleted 15: if15    inet6 fe80::6a7f:74ff:feba:efc7/64 scope link
    276 //       valid_lft forever preferred_lft forever
    277 
    278 const int kDelAddrIPV6InterfaceIndex = 15;
    279 const char kDelAddrIPV6Address[] = "fe80::6a7f:74ff:feba:efc7";
    280 const int kDelAddrIPV6AddressPrefix = 64;
    281 const unsigned char kDelAddrIPV6Scope = RT_SCOPE_LINK;
    282 
    283 const unsigned char kDelAddrIPV6[] = {
    284   0x40, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00,
    285   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    286   0x0a, 0x40, 0x80, 0xfd, 0x0f, 0x00, 0x00, 0x00,
    287   0x14, 0x00, 0x01, 0x00, 0xfe, 0x80, 0x00, 0x00,
    288   0x00, 0x00, 0x00, 0x00, 0x6a, 0x7f, 0x74, 0xff,
    289   0xfe, 0xba, 0xef, 0xc7, 0x14, 0x00, 0x06, 0x00,
    290   0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    291   0xbf, 0xdb, 0x02, 0x00, 0xbf, 0xdb, 0x02, 0x00,
    292 };
    293 
    294 // Deleted ff02::1:ffa0:688 via ff02::1:ffa0:688 dev if2  metric 0
    295 
    296 const int kDelRouteIPV6InterfaceIndex = 2;
    297 const char kDelRouteIPV6Address[] = "ff02::1:ffa0:688";
    298 const int kDelRouteIPV6Prefix = 128;
    299 const int kDelRouteIPV6Metric = 0;
    300 
    301 const unsigned char kDelRouteIPV6[] = {
    302   0x80, 0x00, 0x00, 0x00, 0x19, 0x00, 0x00, 0x00,
    303   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    304   0x0a, 0x80, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x01,
    305   0x00, 0x02, 0x00, 0x00, 0x08, 0x00, 0x0f, 0x00,
    306   0xfe, 0x00, 0x00, 0x00, 0x14, 0x00, 0x01, 0x00,
    307   0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    308   0x00, 0x00, 0x00, 0x01, 0xff, 0xa0, 0x06, 0x88,
    309   0x14, 0x00, 0x05, 0x00, 0xff, 0x02, 0x00, 0x00,
    310   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
    311   0xff, 0xa0, 0x06, 0x88, 0x08, 0x00, 0x04, 0x00,
    312   0x02, 0x00, 0x00, 0x00, 0x08, 0x00, 0x06, 0x00,
    313   0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x0c, 0x00,
    314   0x00, 0x00, 0x00, 0x00, 0x5f, 0x0c, 0x00, 0x00,
    315   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    316   0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    317   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    318 };
    319 
    320 // default via 192.168.17.254 dev if12  metric 9
    321 
    322 const int kAddRouteIPV4InterfaceIndex = 12;
    323 const char kAddRouteIPV4Address[] = "192.168.17.254";
    324 const int kAddRouteIPV4Metric = 9;
    325 
    326 const unsigned char kAddRouteIPV4[] = {
    327   0x3c, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
    328   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    329   0x02, 0x00, 0x00, 0x00, 0xfe, 0x03, 0x00, 0x01,
    330   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x0f, 0x00,
    331   0xfe, 0x00, 0x00, 0x00, 0x08, 0x00, 0x06, 0x00,
    332   0x09, 0x00, 0x00, 0x00, 0x08, 0x00, 0x05, 0x00,
    333   0xc0, 0xa8, 0x11, 0xfe, 0x08, 0x00, 0x04, 0x00,
    334   0x0c, 0x00, 0x00, 0x00,
    335 };
    336 
    337 
    338 // This is the same as kAddRouteIPV4 above, except manually corrupted
    339 // the second to last parameter
    340 const unsigned char kAddRouteBusted[] = {
    341   0x3c, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
    342   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    343   0x02, 0x00, 0x00, 0x00, 0xfe, 0x03, 0x00, 0x01,
    344   0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x0f, 0x00,
    345   0xfe, 0x00, 0x00, 0x00, 0x08, 0x00, 0x06, 0x00,
    346   0x09, 0x00, 0x00, 0x00, 0x28, 0x00, 0x05, 0x00,
    347   0xc0, 0xa8, 0x11, 0xfe, 0x08, 0x00, 0x04, 0x00,
    348   0x0c, 0x00, 0x00, 0x00,
    349 };
    350 
    351 // 192.168.10.1 dev if8 lladdr 00:14:d1:cd:d5:2c REACHABLE
    352 const unsigned char kAddNeighborMessage[] = {
    353   0x4c, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00,
    354   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    355   0x02, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
    356   0x02, 0x00, 0x00, 0x01, 0x08, 0x00, 0x01, 0x00,
    357   0xc0, 0xa8, 0x0a, 0x01, 0x0a, 0x00, 0x02, 0x00,
    358   0x00, 0x14, 0xd1, 0xcd, 0xd5, 0x2c, 0x00, 0x00,
    359   0x08, 0x00, 0x04, 0x00, 0x04, 0x00, 0x00, 0x00,
    360   0x14, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
    361   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    362   0x04, 0x00, 0x00, 0x00,
    363 };
    364 
    365 // RDNSS notification
    366 // Lifetime: infinity (0xffffffff)
    367 // Server addresses: 2001:db8:100:f101::1, 2001:db8:100:f101::2
    368 const unsigned char kNdRdnssMessage[] = {
    369   0x5c, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00,
    370   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    371   0x0a, 0x00, 0x28, 0x00, 0x01, 0x00, 0x00, 0x00,
    372   0x86, 0x00, 0x03, 0x00, 0x14, 0x00, 0x01, 0x00,
    373   0x19, 0x05, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
    374   0x20, 0x01, 0x0d, 0xb8, 0x01, 0x00, 0xf1, 0x01,
    375   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
    376   0x20, 0x01, 0x0d, 0xb8, 0x01, 0x00, 0xf1, 0x01,
    377   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
    378   0x14, 0x00, 0x01, 0x00, 0xfe, 0x80, 0x00, 0x00,
    379   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    380   0x50, 0xf8, 0x86, 0xff,
    381 };
    382 
    383 }  // namespace
    384 
    385 class RTNLMessageTest : public Test {
    386  protected:
    387   void TestParseLink(const ByteString& packet,
    388                      RTNLMessage::Mode mode,
    389                      int interface_index,
    390                      unsigned int flags,
    391                      unsigned int change,
    392                      ByteString address,
    393                      ByteString name,
    394                      uint32_t mtu,
    395                      ByteString qdisc,
    396                      int oper_state) {
    397     RTNLMessage msg;
    398     EXPECT_TRUE(msg.Decode(packet));
    399 
    400     EXPECT_EQ(RTNLMessage::kTypeLink, msg.type());
    401     EXPECT_EQ(mode, msg.mode());
    402     EXPECT_EQ(interface_index, msg.interface_index());
    403 
    404     RTNLMessage::LinkStatus status = msg.link_status();
    405     EXPECT_EQ(flags, status.flags);
    406     EXPECT_EQ(change, status.change);
    407 
    408     EXPECT_TRUE(msg.HasAttribute(IFLA_ADDRESS));
    409     EXPECT_EQ(address.GetLength(), msg.GetAttribute(IFLA_ADDRESS).GetLength());
    410     EXPECT_TRUE(msg.GetAttribute(IFLA_ADDRESS).Equals(address));
    411 
    412     EXPECT_TRUE(msg.HasAttribute(IFLA_IFNAME));
    413     EXPECT_EQ(name.GetLength(), msg.GetAttribute(IFLA_IFNAME).GetLength());
    414     EXPECT_TRUE(msg.GetAttribute(IFLA_IFNAME).Equals(name));
    415 
    416     EXPECT_TRUE(msg.HasAttribute(IFLA_MTU));
    417     uint32_t mtu_val;
    418     EXPECT_TRUE(msg.GetAttribute(IFLA_MTU).ConvertToCPUUInt32(&mtu_val));
    419     EXPECT_EQ(mtu, mtu_val);
    420 
    421     EXPECT_TRUE(msg.HasAttribute(IFLA_QDISC));
    422     EXPECT_EQ(qdisc.GetLength(), msg.GetAttribute(IFLA_QDISC).GetLength());
    423     EXPECT_TRUE(msg.GetAttribute(IFLA_QDISC).Equals(qdisc));
    424 
    425     EXPECT_TRUE(msg.HasAttribute(IFLA_OPERSTATE));
    426     EXPECT_EQ(oper_state, msg.GetAttribute(IFLA_OPERSTATE).GetConstData()[0]);
    427   }
    428 
    429   void TestParseAddress(const ByteString& packet,
    430                         RTNLMessage::Mode mode,
    431                         int interface_index,
    432                         const IPAddress& address,
    433                         unsigned char scope) {
    434     RTNLMessage msg;
    435 
    436     EXPECT_TRUE(msg.Decode(packet));
    437     EXPECT_EQ(RTNLMessage::kTypeAddress, msg.type());
    438     EXPECT_EQ(mode, msg.mode());
    439     EXPECT_EQ(interface_index, msg.interface_index());
    440     EXPECT_EQ(address.family(), msg.family());
    441 
    442     RTNLMessage::AddressStatus status = msg.address_status();
    443     EXPECT_EQ(scope, status.scope);
    444 
    445     EXPECT_TRUE(msg.HasAttribute(IFA_ADDRESS));
    446     EXPECT_EQ(address.GetLength(), msg.GetAttribute(IFA_ADDRESS).GetLength());
    447     EXPECT_TRUE(
    448         IPAddress(address.family(),
    449                   msg.GetAttribute(IFA_ADDRESS),
    450                   status.prefix_len).Equals(address));
    451   }
    452 
    453   void TestParseRoute(const ByteString& packet,
    454                       RTNLMessage::Mode /*mode*/,
    455                       IPAddress::Family family,
    456                       int interface_index,
    457                       const IPAddress& dst,
    458                       const IPAddress& src,
    459                       const IPAddress& gateway,
    460                       unsigned char table,
    461                       int protocol,
    462                       unsigned char scope,
    463                       unsigned char type,
    464                       int metric) {
    465     RTNLMessage msg;
    466 
    467     EXPECT_TRUE(msg.Decode(packet));
    468     EXPECT_EQ(RTNLMessage::kTypeRoute, msg.type());
    469     EXPECT_EQ(0, msg.interface_index());
    470     EXPECT_EQ(family, msg.family());
    471 
    472     RTNLMessage::RouteStatus status = msg.route_status();
    473     EXPECT_EQ(table, status.table);
    474     EXPECT_EQ(protocol, status.protocol);
    475     EXPECT_EQ(scope, status.scope);
    476     EXPECT_EQ(type, status.type);
    477 
    478     if (!dst.IsDefault()) {
    479       EXPECT_TRUE(msg.HasAttribute(RTA_DST));
    480       EXPECT_TRUE(IPAddress(family,
    481                             msg.GetAttribute(RTA_DST),
    482                             status.dst_prefix).Equals(dst));
    483     }
    484 
    485     if (!src.IsDefault()) {
    486       EXPECT_TRUE(msg.HasAttribute(RTA_SRC));
    487       EXPECT_TRUE(IPAddress(family,
    488                             msg.GetAttribute(RTA_SRC),
    489                             status.src_prefix).Equals(src));
    490     }
    491 
    492     if (!gateway.IsDefault()) {
    493       EXPECT_TRUE(msg.HasAttribute(RTA_GATEWAY));
    494       EXPECT_TRUE(IPAddress(family,
    495                             msg.GetAttribute(RTA_GATEWAY)).Equals(gateway));
    496     }
    497 
    498     if (interface_index >= 0) {
    499       EXPECT_TRUE(msg.HasAttribute(RTA_OIF));
    500       uint32_t int_val;
    501       EXPECT_TRUE(msg.GetAttribute(RTA_OIF).ConvertToCPUUInt32(&int_val));
    502       EXPECT_EQ(interface_index, int_val);
    503     } else {
    504       EXPECT_FALSE(msg.HasAttribute(RTA_OIF));
    505     }
    506     if (metric >= 0) {
    507       EXPECT_TRUE(msg.HasAttribute(RTA_PRIORITY));
    508       uint32_t metric_val;
    509       EXPECT_TRUE(
    510           msg.GetAttribute(RTA_PRIORITY).ConvertToCPUUInt32(&metric_val));
    511       EXPECT_EQ(metric, metric_val);
    512     } else {
    513       EXPECT_FALSE(msg.HasAttribute(RTA_PRIORITY));
    514     }
    515   }
    516 
    517   void TestParseRdnss(const ByteString& packet,
    518                       RTNLMessage::Mode mode,
    519                       int interface_index,
    520                       uint32_t lifetime,
    521                       const std::string& dns_server_addresses) {
    522     RTNLMessage msg;
    523 
    524     EXPECT_TRUE(msg.Decode(packet));
    525     EXPECT_EQ(RTNLMessage::kTypeRdnss, msg.type());
    526     EXPECT_EQ(mode, msg.mode());
    527     EXPECT_EQ(interface_index, msg.interface_index());
    528 
    529     RTNLMessage::RdnssOption rdnss = msg.rdnss_option();
    530 
    531     // Format addresses string for verification.
    532     std::string addresses;
    533     bool first = true;
    534     for (auto& ip : rdnss.addresses) {
    535       if (!first) {
    536         addresses += ", ";
    537       } else {
    538         first = false;
    539       }
    540       addresses += ip.ToString();
    541     }
    542 
    543     // Verify life time and addresses.
    544     EXPECT_EQ(lifetime, rdnss.lifetime);
    545     EXPECT_EQ(dns_server_addresses, addresses);
    546   }
    547 
    548   void TestParseNeighbor(const ByteString& packet,
    549                          RTNLMessage::Mode mode,
    550                          IPAddress::Family family,
    551                          int interface_index,
    552                          uint16_t state,
    553                          uint8_t flags,
    554                          uint8_t type) {
    555     RTNLMessage msg;
    556 
    557     EXPECT_TRUE(msg.Decode(packet));
    558     EXPECT_EQ(RTNLMessage::kTypeNeighbor, msg.type());
    559     EXPECT_EQ(mode, msg.mode());
    560     EXPECT_EQ(family, msg.family());
    561     EXPECT_EQ(interface_index, msg.interface_index());
    562 
    563     RTNLMessage::NeighborStatus neighbor = msg.neighbor_status();
    564 
    565     EXPECT_EQ(neighbor.state, state);
    566     EXPECT_EQ(neighbor.flags, flags);
    567     EXPECT_EQ(neighbor.type, type);
    568   }
    569 };
    570 
    571 TEST_F(RTNLMessageTest, NewLinkWlan0) {
    572   TestParseLink(ByteString(kNewLinkMessageWlan0, sizeof(kNewLinkMessageWlan0)),
    573                 RTNLMessage::kModeAdd,
    574                 kNewLinkMessageWlan0InterfaceIndex,
    575                 kNewLinkMessageWlan0InterfaceFlags,
    576                 kNewLinkMessageWlan0InterfaceFlagsChange,
    577                 ByteString(string(kNewLinkMessageWlan0MACAddress), false),
    578                 ByteString(string(kNewLinkMessageWlan0InterfaceName), true),
    579                 kNewLinkMessageWlan0MTU,
    580                 ByteString(string(kNewLinkMessageWlan0Qdisc), true),
    581                 kNewLinkMessageWlan0OperState);
    582 }
    583 
    584 TEST_F(RTNLMessageTest, DelLinkEth0) {
    585   TestParseLink(ByteString(kDelLinkMessageEth0, sizeof(kDelLinkMessageEth0)),
    586                 RTNLMessage::kModeDelete,
    587                 kDelLinkMessageEth0InterfaceIndex,
    588                 kDelLinkMessageEth0InterfaceFlags,
    589                 kDelLinkMessageEth0InterfaceFlagsChange,
    590                 ByteString(string(kDelLinkMessageEth0MACAddress), false),
    591                 ByteString(string(kDelLinkMessageEth0InterfacName), true),
    592                 kDelLinkMessageEth0MTU,
    593                 ByteString(string(kDelLinkMessageEth0Qdisc), true),
    594                 kDelLinkMessageEth0OperState);
    595 }
    596 
    597 TEST_F(RTNLMessageTest, NewAddrIPv4) {
    598   IPAddress addr(IPAddress::kFamilyIPv4);
    599 
    600   EXPECT_TRUE(addr.SetAddressFromString(kNewAddrIPV4Address));
    601   addr.set_prefix(kNewAddrIPV4AddressPrefix);
    602   TestParseAddress(ByteString(kNewAddrIPV4, sizeof(kNewAddrIPV4)),
    603                    RTNLMessage::kModeAdd,
    604                    kNewAddrIPV4InterfaceIndex,
    605                    addr,
    606                    kNewAddrIPV4Scope);
    607 }
    608 
    609 TEST_F(RTNLMessageTest, DelAddrIPv6) {
    610   IPAddress addr(IPAddress::kFamilyIPv6);
    611 
    612   EXPECT_TRUE(addr.SetAddressFromString(kDelAddrIPV6Address));
    613   addr.set_prefix(kDelAddrIPV6AddressPrefix);
    614   TestParseAddress(ByteString(kDelAddrIPV6, sizeof(kDelAddrIPV6)),
    615                    RTNLMessage::kModeDelete,
    616                    kDelAddrIPV6InterfaceIndex,
    617                    addr,
    618                    kDelAddrIPV6Scope);
    619 }
    620 
    621 TEST_F(RTNLMessageTest, DelRouteIPv6) {
    622   IPAddress dst(IPAddress::kFamilyIPv6);
    623   IPAddress src(IPAddress::kFamilyIPv6);
    624   IPAddress gateway(IPAddress::kFamilyIPv6);
    625 
    626   EXPECT_TRUE(dst.SetAddressFromString(kDelRouteIPV6Address));
    627   dst.set_prefix(kDelRouteIPV6Prefix);
    628   src.SetAddressToDefault();
    629   EXPECT_TRUE(gateway.SetAddressFromString(kDelRouteIPV6Address));
    630 
    631   TestParseRoute(ByteString(kDelRouteIPV6, sizeof(kDelRouteIPV6)),
    632                  RTNLMessage::kModeDelete,
    633                  IPAddress::kFamilyIPv6,
    634                  kDelRouteIPV6InterfaceIndex,
    635                  dst,
    636                  src,
    637                  gateway,
    638                  RT_TABLE_MAIN,
    639                  RTPROT_UNSPEC,
    640                  RT_SCOPE_UNIVERSE,
    641                  RTN_UNICAST,
    642                  kDelRouteIPV6Metric);
    643 }
    644 
    645 TEST_F(RTNLMessageTest, AddRouteIPv4) {
    646   IPAddress dst(IPAddress::kFamilyIPv4);
    647   IPAddress src(IPAddress::kFamilyIPv4);
    648   IPAddress gateway(IPAddress::kFamilyIPv4);
    649 
    650   dst.SetAddressToDefault();
    651   src.SetAddressToDefault();
    652   EXPECT_TRUE(gateway.SetAddressFromString(kAddRouteIPV4Address));
    653 
    654   TestParseRoute(ByteString(kAddRouteIPV4, sizeof(kAddRouteIPV4)),
    655                  RTNLMessage::kModeAdd,
    656                  IPAddress::kFamilyIPv4,
    657                  kAddRouteIPV4InterfaceIndex,
    658                  dst,
    659                  src,
    660                  gateway,
    661                  RT_TABLE_MAIN,
    662                  RTPROT_BOOT,
    663                  RT_SCOPE_UNIVERSE,
    664                  RTN_UNICAST,
    665                  kAddRouteIPV4Metric);
    666 }
    667 
    668 TEST_F(RTNLMessageTest, NewRdnssOption) {
    669   int interface_index = 1;
    670   uint32_t lifetime = 0xffffffff;
    671   std::string dns_server_addresses =
    672       "2001:db8:100:f101::1, 2001:db8:100:f101::2";
    673 
    674   TestParseRdnss(ByteString(kNdRdnssMessage, sizeof(kNdRdnssMessage)),
    675                  RTNLMessage::kModeAdd,
    676                  interface_index,
    677                  lifetime,
    678                  dns_server_addresses);
    679 }
    680 
    681 TEST_F(RTNLMessageTest, AddRouteBusted) {
    682   // RTNLMessage should list parse errors as kMessageUnknown
    683   RTNLMessage msg;
    684   EXPECT_FALSE(msg.Decode(
    685       ByteString(kAddRouteBusted, sizeof(kAddRouteBusted))));
    686 }
    687 
    688 TEST_F(RTNLMessageTest, AddNeighbor) {
    689   TestParseNeighbor(
    690       ByteString(kAddNeighborMessage, sizeof(kAddNeighborMessage)),
    691       RTNLMessage::kModeAdd,
    692       IPAddress::kFamilyIPv4,
    693       8,
    694       NUD_REACHABLE,
    695       0,
    696       NDA_DST);
    697 }
    698 
    699 TEST_F(RTNLMessageTest, EncodeDelNeighbor) {
    700   RTNLMessage msg(RTNLMessage::kTypeNeighbor,
    701                   RTNLMessage::kModeDelete,
    702                   0, 1, 2, 0,
    703                   IPAddress::kFamilyIPv4);
    704   msg.set_neighbor_status(RTNLMessage::NeighborStatus(
    705       0, NTF_ROUTER, NDA_LLADDR));
    706 
    707   TestParseNeighbor(msg.Encode(),
    708                     RTNLMessage::kModeDelete,
    709                     IPAddress::kFamilyIPv4,
    710                     0,
    711                     0,
    712                     NTF_ROUTER,
    713                     NDA_LLADDR);
    714 }
    715 
    716 TEST_F(RTNLMessageTest, EncodeRouteAdd) {
    717   RTNLMessage msg(RTNLMessage::kTypeRoute,
    718                   RTNLMessage::kModeAdd,
    719                   0, 1, 2, 0,
    720                   IPAddress::kFamilyIPv4);
    721   IPAddress dst(IPAddress::kFamilyIPv4);
    722   IPAddress src(IPAddress::kFamilyIPv4);
    723   IPAddress gateway(IPAddress::kFamilyIPv4);
    724 
    725   dst.SetAddressToDefault();
    726   src.SetAddressToDefault();
    727   EXPECT_TRUE(gateway.SetAddressFromString("192.168.0.1"));
    728 
    729   msg.set_route_status(RTNLMessage::RouteStatus(
    730       0, 0, RT_TABLE_MAIN, RTPROT_BOOT, RT_SCOPE_UNIVERSE, RTN_UNICAST, 0));
    731   msg.SetAttribute(RTA_DST, dst.address());
    732   msg.SetAttribute(RTA_SRC, src.address());
    733   msg.SetAttribute(RTA_GATEWAY, gateway.address());
    734   msg.SetAttribute(RTA_OIF, ByteString::CreateFromCPUUInt32(12));
    735   msg.SetAttribute(RTA_PRIORITY, ByteString::CreateFromCPUUInt32(13));
    736 
    737   TestParseRoute(msg.Encode(),
    738                  RTNLMessage::kModeAdd,
    739                  IPAddress::kFamilyIPv4,
    740                  12,
    741                  dst,
    742                  src,
    743                  gateway,
    744                  RT_TABLE_MAIN,
    745                  RTPROT_BOOT,
    746                  RT_SCOPE_UNIVERSE,
    747                  RTN_UNICAST,
    748                  13);
    749 }
    750 
    751 TEST_F(RTNLMessageTest, EncodeLinkDel) {
    752   const int kInterfaceIndex = 0x1234;
    753   RTNLMessage pmsg(RTNLMessage::kTypeLink,
    754                   RTNLMessage::kModeDelete,
    755                   NLM_F_REQUEST,
    756                   0,
    757                   0,
    758                   kInterfaceIndex,
    759                   IPAddress::kFamilyUnknown);
    760 
    761   RTNLMessage msg;
    762   EXPECT_TRUE(msg.Decode(pmsg.Encode()));
    763 
    764   EXPECT_EQ(RTNLMessage::kTypeLink, msg.type());
    765   EXPECT_EQ(RTNLMessage::kModeDelete, msg.mode());
    766   EXPECT_EQ(kInterfaceIndex, msg.interface_index());
    767 
    768   RTNLMessage::LinkStatus status = msg.link_status();
    769   EXPECT_EQ(0, status.flags);
    770   EXPECT_EQ(0, status.change);
    771 
    772   EXPECT_FALSE(msg.HasAttribute(IFLA_ADDRESS));
    773   EXPECT_FALSE(msg.HasAttribute(IFLA_IFNAME));
    774   EXPECT_FALSE(msg.HasAttribute(IFLA_MTU));
    775   EXPECT_FALSE(msg.HasAttribute(IFLA_QDISC));
    776   EXPECT_FALSE(msg.HasAttribute(IFLA_OPERSTATE));
    777 }
    778 
    779 }  // namespace shill
    780