Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 1 | /* |
Jonathan Hui | 4435017 | 2016-09-13 15:57:11 -0700 | [diff] [blame] | 2 | * Copyright (c) 2016, The OpenThread Authors. |
Marcin K Szczodrak | 99870fa | 2016-05-12 22:39:11 -0700 | [diff] [blame] | 3 | * All rights reserved. |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 4 | * |
Marcin K Szczodrak | 99870fa | 2016-05-12 22:39:11 -0700 | [diff] [blame] | 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * 3. Neither the name of the copyright holder nor the |
| 13 | * names of its contributors may be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 15 | * |
Marcin K Szczodrak | 99870fa | 2016-05-12 22:39:11 -0700 | [diff] [blame] | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 27 | */ |
| 28 | |
| 29 | /** |
| 30 | * @file |
| 31 | * This file implements ICMPv6. |
| 32 | */ |
| 33 | |
Jonathan Hui | fbfd76a | 2017-05-05 11:28:29 -0700 | [diff] [blame] | 34 | #include "icmp6.hpp" |
| 35 | |
Jonathan Hui | fbfd76a | 2017-05-05 11:28:29 -0700 | [diff] [blame] | 36 | #include "common/code_utils.hpp" |
| 37 | #include "common/debug.hpp" |
Abtin Keshavarzian | 02c876e | 2017-11-13 08:27:57 -0800 | [diff] [blame] | 38 | #include "common/instance.hpp" |
Abtin Keshavarzian | f7802d6 | 2021-04-10 10:16:01 -0700 | [diff] [blame] | 39 | #include "common/locator_getters.hpp" |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 40 | #include "common/log.hpp" |
Jonathan Hui | fbfd76a | 2017-05-05 11:28:29 -0700 | [diff] [blame] | 41 | #include "common/message.hpp" |
Abtin Keshavarzian | d16d202 | 2020-09-01 14:27:50 -0700 | [diff] [blame] | 42 | #include "net/checksum.hpp" |
Jonathan Hui | fbfd76a | 2017-05-05 11:28:29 -0700 | [diff] [blame] | 43 | #include "net/ip6.hpp" |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 44 | |
Jonathan Hui | 1eabda6 | 2017-04-27 22:29:05 -0700 | [diff] [blame] | 45 | namespace ot { |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 46 | namespace Ip6 { |
| 47 | |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 48 | RegisterLogModule("Icmp6"); |
| 49 | |
Jonathan Hui | 69d98d4 | 2018-02-06 14:14:57 -0800 | [diff] [blame] | 50 | Icmp::Icmp(Instance &aInstance) |
| 51 | : InstanceLocator(aInstance) |
Jonathan Hui | 69d98d4 | 2018-02-06 14:14:57 -0800 | [diff] [blame] | 52 | , mEchoSequence(1) |
Jonathan Hui | f602dcd | 2018-03-13 18:10:28 +0000 | [diff] [blame] | 53 | , mEchoMode(OT_ICMP6_ECHO_HANDLER_ALL) |
Jonathan Hui | 2029ef6 | 2016-08-26 14:24:55 -0700 | [diff] [blame] | 54 | { |
| 55 | } |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 56 | |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 57 | Message *Icmp::NewMessage(uint16_t aReserved) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 58 | { |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 59 | return Get<Ip6>().NewMessage(sizeof(Header) + aReserved); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 60 | } |
| 61 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 62 | Error Icmp::RegisterHandler(Handler &aHandler) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 63 | { |
Abtin Keshavarzian | e17c82b | 2019-12-04 11:03:52 -0800 | [diff] [blame] | 64 | return mHandlers.Add(aHandler); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 65 | } |
| 66 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 67 | Error Icmp::SendEchoRequest(Message &aMessage, const MessageInfo &aMessageInfo, uint16_t aIdentifier) |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 68 | { |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 69 | Error error = kErrorNone; |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 70 | MessageInfo messageInfoLocal; |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 71 | Header icmpHeader; |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 72 | |
| 73 | messageInfoLocal = aMessageInfo; |
| 74 | |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 75 | icmpHeader.Clear(); |
| 76 | icmpHeader.SetType(Header::kTypeEchoRequest); |
Łukasz Duda | 4f35cdb | 2017-02-24 21:13:59 +0100 | [diff] [blame] | 77 | icmpHeader.SetId(aIdentifier); |
Jonathan Hui | 2029ef6 | 2016-08-26 14:24:55 -0700 | [diff] [blame] | 78 | icmpHeader.SetSequence(mEchoSequence++); |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 79 | |
Abtin Keshavarzian | 1f40793 | 2020-10-03 08:28:42 -0700 | [diff] [blame] | 80 | SuccessOrExit(error = aMessage.Prepend(icmpHeader)); |
Jonathan Hui | 1ce5064 | 2020-05-11 21:51:46 -0700 | [diff] [blame] | 81 | aMessage.SetOffset(0); |
Abtin Keshavarzian | 8f112ee | 2019-04-02 09:07:25 -0700 | [diff] [blame] | 82 | SuccessOrExit(error = Get<Ip6>().SendDatagram(aMessage, messageInfoLocal, kProtoIcmp6)); |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 83 | |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 84 | LogInfo("Sent echo request: (seq = %d)", icmpHeader.GetSequence()); |
Jonathan Hui | 027e009 | 2016-08-29 09:31:26 -0700 | [diff] [blame] | 85 | |
| 86 | exit: |
| 87 | return error; |
| 88 | } |
| 89 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 90 | Error Icmp::SendError(Header::Type aType, Header::Code aCode, const MessageInfo &aMessageInfo, const Message &aMessage) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 91 | { |
Abtin Keshavarzian | 6e0eb8a | 2022-07-11 11:59:06 -0700 | [diff] [blame] | 92 | Error error; |
| 93 | Headers headers; |
| 94 | |
| 95 | SuccessOrExit(error = headers.ParseFrom(aMessage)); |
| 96 | error = SendError(aType, aCode, aMessageInfo, headers); |
| 97 | |
| 98 | exit: |
| 99 | return error; |
| 100 | } |
| 101 | |
| 102 | Error Icmp::SendError(Header::Type aType, Header::Code aCode, const MessageInfo &aMessageInfo, const Headers &aHeaders) |
| 103 | { |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 104 | Error error = kErrorNone; |
Duda, Lukasz | 7edb455 | 2020-05-07 00:32:56 +0200 | [diff] [blame] | 105 | MessageInfo messageInfoLocal; |
Jonathan Hui | 1326d64 | 2020-06-17 22:44:54 -0700 | [diff] [blame] | 106 | Message * message = nullptr; |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 107 | Header icmp6Header; |
Abtin Keshavarzian | 8160f34 | 2020-05-18 21:44:30 -0700 | [diff] [blame] | 108 | Message::Settings settings(Message::kWithLinkSecurity, Message::kPriorityNet); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 109 | |
Abtin Keshavarzian | 6e0eb8a | 2022-07-11 11:59:06 -0700 | [diff] [blame] | 110 | if (aHeaders.GetIpProto() == kProtoIcmp6) |
Jonathan Hui | fe73664 | 2020-04-07 15:47:12 -0700 | [diff] [blame] | 111 | { |
Abtin Keshavarzian | 6e0eb8a | 2022-07-11 11:59:06 -0700 | [diff] [blame] | 112 | VerifyOrExit(!aHeaders.GetIcmpHeader().IsError()); |
Jonathan Hui | fe73664 | 2020-04-07 15:47:12 -0700 | [diff] [blame] | 113 | } |
| 114 | |
Łukasz Duda | 8b8f783 | 2017-01-13 02:41:40 +0100 | [diff] [blame] | 115 | messageInfoLocal = aMessageInfo; |
| 116 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 117 | VerifyOrExit((message = Get<Ip6>().NewMessage(0, settings)) != nullptr, error = kErrorNoBufs); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 118 | |
Abtin Keshavarzian | 6e0eb8a | 2022-07-11 11:59:06 -0700 | [diff] [blame] | 119 | // Prepare the ICMPv6 error message. We only include the IPv6 header |
| 120 | // of the original message causing the error. |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 121 | |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 122 | icmp6Header.Clear(); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 123 | icmp6Header.SetType(aType); |
| 124 | icmp6Header.SetCode(aCode); |
Abtin Keshavarzian | 6e0eb8a | 2022-07-11 11:59:06 -0700 | [diff] [blame] | 125 | SuccessOrExit(error = message->Append(icmp6Header)); |
| 126 | SuccessOrExit(error = message->Append(aHeaders.GetIp6Header())); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 127 | |
Abtin Keshavarzian | 8f112ee | 2019-04-02 09:07:25 -0700 | [diff] [blame] | 128 | SuccessOrExit(error = Get<Ip6>().SendDatagram(*message, messageInfoLocal, kProtoIcmp6)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 129 | |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 130 | LogInfo("Sent ICMPv6 Error"); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 131 | |
| 132 | exit: |
Abtin Keshavarzian | 83072bb | 2020-09-24 13:06:17 -0700 | [diff] [blame] | 133 | FreeMessageOnError(message, error); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 134 | return error; |
| 135 | } |
| 136 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 137 | Error Icmp::HandleMessage(Message &aMessage, MessageInfo &aMessageInfo) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 138 | { |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 139 | Error error = kErrorNone; |
| 140 | Header icmp6Header; |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 141 | |
Abtin Keshavarzian | 1f40793 | 2020-10-03 08:28:42 -0700 | [diff] [blame] | 142 | SuccessOrExit(error = aMessage.Read(aMessage.GetOffset(), icmp6Header)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 143 | |
Abtin Keshavarzian | d16d202 | 2020-09-01 14:27:50 -0700 | [diff] [blame] | 144 | SuccessOrExit(error = Checksum::VerifyMessageChecksum(aMessage, aMessageInfo, kProtoIcmp6)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 145 | |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 146 | if (icmp6Header.GetType() == Header::kTypeEchoRequest) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 147 | { |
Łukasz Duda | 704511c | 2018-09-18 18:30:56 +0200 | [diff] [blame] | 148 | SuccessOrExit(error = HandleEchoRequest(aMessage, aMessageInfo)); |
Łukasz Duda | 4f35cdb | 2017-02-24 21:13:59 +0100 | [diff] [blame] | 149 | } |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 150 | |
Jonathan Hui | 03d6525 | 2020-05-11 21:59:02 -0700 | [diff] [blame] | 151 | aMessage.MoveOffset(sizeof(icmp6Header)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 152 | |
Abtin Keshavarzian | 6895edd | 2021-08-23 14:50:14 -0700 | [diff] [blame] | 153 | for (Handler &handler : mHandlers) |
Łukasz Duda | 4f35cdb | 2017-02-24 21:13:59 +0100 | [diff] [blame] | 154 | { |
Abtin Keshavarzian | 6895edd | 2021-08-23 14:50:14 -0700 | [diff] [blame] | 155 | handler.HandleReceiveMessage(aMessage, aMessageInfo, icmp6Header); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | exit: |
| 159 | return error; |
| 160 | } |
| 161 | |
Jonathan Hui | f602dcd | 2018-03-13 18:10:28 +0000 | [diff] [blame] | 162 | bool Icmp::ShouldHandleEchoRequest(const MessageInfo &aMessageInfo) |
| 163 | { |
| 164 | bool rval = false; |
| 165 | |
| 166 | switch (mEchoMode) |
| 167 | { |
| 168 | case OT_ICMP6_ECHO_HANDLER_DISABLED: |
| 169 | rval = false; |
| 170 | break; |
| 171 | case OT_ICMP6_ECHO_HANDLER_UNICAST_ONLY: |
| 172 | rval = !aMessageInfo.GetSockAddr().IsMulticast(); |
| 173 | break; |
| 174 | case OT_ICMP6_ECHO_HANDLER_MULTICAST_ONLY: |
| 175 | rval = aMessageInfo.GetSockAddr().IsMulticast(); |
| 176 | break; |
| 177 | case OT_ICMP6_ECHO_HANDLER_ALL: |
| 178 | rval = true; |
| 179 | break; |
| 180 | } |
| 181 | |
| 182 | return rval; |
| 183 | } |
| 184 | |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 185 | Error Icmp::HandleEchoRequest(Message &aRequestMessage, const MessageInfo &aMessageInfo) |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 186 | { |
Abtin Keshavarzian | 7dca56e | 2021-03-15 21:07:07 -0700 | [diff] [blame] | 187 | Error error = kErrorNone; |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 188 | Header icmp6Header; |
Jonathan Hui | 1326d64 | 2020-06-17 22:44:54 -0700 | [diff] [blame] | 189 | Message * replyMessage = nullptr; |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 190 | MessageInfo replyMessageInfo; |
Jonathan Hui | 69d98d4 | 2018-02-06 14:14:57 -0800 | [diff] [blame] | 191 | uint16_t payloadLength; |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 192 | |
rongli | 9f9d76b | 2018-09-01 08:55:32 +0800 | [diff] [blame] | 193 | // always handle Echo Request destined for RLOC or ALOC |
Abtin Keshavarzian | c9c0cf4 | 2020-10-13 23:26:02 -0700 | [diff] [blame] | 194 | VerifyOrExit(ShouldHandleEchoRequest(aMessageInfo) || aMessageInfo.GetSockAddr().GetIid().IsLocator()); |
Jonathan Hui | f602dcd | 2018-03-13 18:10:28 +0000 | [diff] [blame] | 195 | |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 196 | LogInfo("Received Echo Request"); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 197 | |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 198 | icmp6Header.Clear(); |
| 199 | icmp6Header.SetType(Header::kTypeEchoReply); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 200 | |
Jonathan Hui | 1326d64 | 2020-06-17 22:44:54 -0700 | [diff] [blame] | 201 | if ((replyMessage = Get<Ip6>().NewMessage(0)) == nullptr) |
Nick Banks | fbc5245 | 2016-10-03 10:45:25 -0700 | [diff] [blame] | 202 | { |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 203 | LogDebg("Failed to allocate a new message"); |
Nick Banks | fbc5245 | 2016-10-03 10:45:25 -0700 | [diff] [blame] | 204 | ExitNow(); |
| 205 | } |
| 206 | |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 207 | payloadLength = aRequestMessage.GetLength() - aRequestMessage.GetOffset() - Header::kDataFieldOffset; |
| 208 | SuccessOrExit(error = replyMessage->SetLength(Header::kDataFieldOffset + payloadLength)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 209 | |
Abtin Keshavarzian | 1f40793 | 2020-10-03 08:28:42 -0700 | [diff] [blame] | 210 | replyMessage->WriteBytes(0, &icmp6Header, Header::kDataFieldOffset); |
Abtin Keshavarzian | 04b35d0 | 2020-07-08 10:41:00 -0700 | [diff] [blame] | 211 | aRequestMessage.CopyTo(aRequestMessage.GetOffset() + Header::kDataFieldOffset, Header::kDataFieldOffset, |
Jonathan Hui | 69d98d4 | 2018-02-06 14:14:57 -0800 | [diff] [blame] | 212 | payloadLength, *replyMessage); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 213 | |
Jonathan Hui | f0a5239 | 2016-10-27 09:42:48 -0700 | [diff] [blame] | 214 | replyMessageInfo.SetPeerAddr(aMessageInfo.GetPeerAddr()); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 215 | |
| 216 | if (!aMessageInfo.GetSockAddr().IsMulticast()) |
| 217 | { |
Jonathan Hui | f0a5239 | 2016-10-27 09:42:48 -0700 | [diff] [blame] | 218 | replyMessageInfo.SetSockAddr(aMessageInfo.GetSockAddr()); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Abtin Keshavarzian | 8f112ee | 2019-04-02 09:07:25 -0700 | [diff] [blame] | 221 | SuccessOrExit(error = Get<Ip6>().SendDatagram(*replyMessage, replyMessageInfo, kProtoIcmp6)); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 222 | |
Abtin Keshavarzian | 1f40793 | 2020-10-03 08:28:42 -0700 | [diff] [blame] | 223 | IgnoreError(replyMessage->Read(replyMessage->GetOffset(), icmp6Header)); |
Abtin Keshavarzian | 564982c | 2022-02-17 15:50:45 -0800 | [diff] [blame] | 224 | LogInfo("Sent Echo Reply (seq = %d)", icmp6Header.GetSequence()); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 225 | |
| 226 | exit: |
Abtin Keshavarzian | 83072bb | 2020-09-24 13:06:17 -0700 | [diff] [blame] | 227 | FreeMessageOnError(replyMessage, error); |
Jonathan Hui | 4f9945c | 2016-05-10 20:48:47 -0700 | [diff] [blame] | 228 | return error; |
| 229 | } |
| 230 | |
Jonathan Hui | 69d98d4 | 2018-02-06 14:14:57 -0800 | [diff] [blame] | 231 | } // namespace Ip6 |
| 232 | } // namespace ot |