| /* |
| * Copyright (c) 2020, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file implements Backbone Thread Management Framework (TMF) functionalities. |
| */ |
| |
| #include "backbone_tmf.hpp" |
| |
| #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE |
| |
| #include "common/locator_getters.hpp" |
| #include "common/log.hpp" |
| |
| namespace ot { |
| namespace BackboneRouter { |
| |
| RegisterLogModule("Bbr"); |
| |
| Error BackboneTmfAgent::Start(void) |
| { |
| Error error = kErrorNone; |
| |
| SuccessOrExit(error = Coap::Start(kBackboneUdpPort, OT_NETIF_BACKBONE)); |
| SubscribeMulticast(Get<Local>().GetAllNetworkBackboneRoutersAddress()); |
| |
| exit: |
| return error; |
| } |
| |
| Error BackboneTmfAgent::Filter(const ot::Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo, void *aContext) |
| { |
| OT_UNUSED_VARIABLE(aMessage); |
| |
| return static_cast<BackboneTmfAgent *>(aContext)->IsBackboneTmfMessage(aMessageInfo) ? kErrorNone : kErrorNotTmf; |
| } |
| |
| bool BackboneTmfAgent::IsBackboneTmfMessage(const Ip6::MessageInfo &aMessageInfo) const |
| { |
| const Ip6::Address &dst = aMessageInfo.GetSockAddr(); |
| const Ip6::Address &src = aMessageInfo.GetPeerAddr(); |
| |
| // A Backbone TMF message must comply with following rules: |
| // The destination must be one of: |
| // 1. All Network BBRs (Link-Local scope) |
| // 2. All Domain BBRs (Link-Local scope) |
| // 3. A Backbone Link-Local address |
| // The source must be a Backbone Link-local address. |
| return (Get<BackboneRouter::Local>().IsEnabled() && src.IsLinkLocal() && |
| (dst.IsLinkLocal() || dst == Get<BackboneRouter::Local>().GetAllNetworkBackboneRoutersAddress() || |
| dst == Get<BackboneRouter::Local>().GetAllDomainBackboneRoutersAddress())); |
| } |
| |
| void BackboneTmfAgent::SubscribeMulticast(const Ip6::Address &aAddress) |
| { |
| Error error = mSocket.JoinNetifMulticastGroup(OT_NETIF_BACKBONE, aAddress); |
| |
| LogError("Backbone TMF subscribes", aAddress, error); |
| } |
| |
| void BackboneTmfAgent::UnsubscribeMulticast(const Ip6::Address &aAddress) |
| { |
| Error error = mSocket.LeaveNetifMulticastGroup(OT_NETIF_BACKBONE, aAddress); |
| |
| LogError("Backbone TMF unsubscribes", aAddress, error); |
| } |
| |
| void BackboneTmfAgent::LogError(const char *aText, const Ip6::Address &aAddress, Error aError) const |
| { |
| OT_UNUSED_VARIABLE(aText); |
| OT_UNUSED_VARIABLE(aAddress); |
| |
| if (aError == kErrorNone) |
| { |
| LogInfo("%s %s: %s", aText, aAddress.ToString().AsCString(), ErrorToString(aError)); |
| } |
| else |
| { |
| LogWarn("%s %s: %s", aText, aAddress.ToString().AsCString(), ErrorToString(aError)); |
| } |
| } |
| |
| } // namespace BackboneRouter |
| } // namespace ot |
| |
| #endif // OPENTHREAD_FTD && OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE |