| /* |
| * Copyright (c) 2016, 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 the Thread Network Data managed by the Thread Leader. |
| */ |
| |
| #if OPENTHREAD_FTD |
| |
| |
| #define WPP_NAME "network_data_leader_ftd.tmh" |
| #include <openthread/config.h> |
| |
| #include "network_data_leader.hpp" |
| #include <openthread/platform/random.h> |
| |
| #include "openthread-instance.h" |
| #include "coap/coap_header.hpp" |
| #include "common/code_utils.hpp" |
| #include "common/debug.hpp" |
| #include "common/encoding.hpp" |
| #include "common/logging.hpp" |
| #include "common/message.hpp" |
| #include "common/timer.hpp" |
| #include "mac/mac_frame.hpp" |
| #include "meshcop/meshcop.hpp" |
| #include "thread/lowpan.hpp" |
| #include "thread/mle_router.hpp" |
| #include "thread/thread_netif.hpp" |
| #include "thread/thread_tlvs.hpp" |
| #include "thread/thread_uri_paths.hpp" |
| |
| using ot::Encoding::BigEndian::HostSwap16; |
| |
| namespace ot { |
| namespace NetworkData { |
| |
| Leader::Leader(ThreadNetif &aThreadNetif): |
| LeaderBase(aThreadNetif), |
| mTimer(aThreadNetif.GetIp6().mTimerScheduler, &Leader::HandleTimer, this), |
| mServerData(OT_URI_PATH_SERVER_DATA, &Leader::HandleServerData, this), |
| mCommissioningDataGet(OT_URI_PATH_COMMISSIONER_GET, &Leader::HandleCommissioningGet, this), |
| mCommissioningDataSet(OT_URI_PATH_COMMISSIONER_SET, &Leader::HandleCommissioningSet, this) |
| { |
| Reset(); |
| } |
| |
| void Leader::Reset(void) |
| { |
| LeaderBase::Reset(); |
| |
| memset(mContextLastUsed, 0, sizeof(mContextLastUsed)); |
| mContextUsed = 0; |
| mContextIdReuseDelay = kContextIdReuseDelay; |
| } |
| |
| void Leader::Start(void) |
| { |
| Coap::Coap &coap = GetNetif().GetCoap(); |
| |
| coap.AddResource(mServerData); |
| coap.AddResource(mCommissioningDataGet); |
| coap.AddResource(mCommissioningDataSet); |
| } |
| |
| void Leader::Stop(void) |
| { |
| Coap::Coap &coap = GetNetif().GetCoap(); |
| |
| coap.RemoveResource(mServerData); |
| coap.RemoveResource(mCommissioningDataGet); |
| coap.RemoveResource(mCommissioningDataSet); |
| } |
| |
| void Leader::IncrementVersion(void) |
| { |
| ThreadNetif &netif = GetNetif(); |
| |
| if (netif.GetMle().GetRole() == OT_DEVICE_ROLE_LEADER) |
| { |
| mVersion++; |
| netif.SetStateChangedFlags(OT_CHANGED_THREAD_NETDATA); |
| } |
| } |
| |
| void Leader::IncrementStableVersion(void) |
| { |
| if (GetNetif().GetMle().GetRole() == OT_DEVICE_ROLE_LEADER) |
| { |
| mStableVersion++; |
| } |
| } |
| |
| uint32_t Leader::GetContextIdReuseDelay(void) const |
| { |
| return mContextIdReuseDelay; |
| } |
| |
| otError Leader::SetContextIdReuseDelay(uint32_t aDelay) |
| { |
| mContextIdReuseDelay = aDelay; |
| return OT_ERROR_NONE; |
| } |
| |
| void Leader::RemoveBorderRouter(uint16_t aRloc16) |
| { |
| bool rlocIn = false; |
| bool rlocStable = false; |
| RlocLookup(aRloc16, rlocIn, rlocStable, mTlvs, mLength); |
| |
| VerifyOrExit(rlocIn); |
| |
| RemoveRloc(aRloc16); |
| mVersion++; |
| |
| if (rlocStable) |
| { |
| mStableVersion++; |
| } |
| |
| GetNetif().SetStateChangedFlags(OT_CHANGED_THREAD_NETDATA); |
| |
| exit: |
| return; |
| } |
| |
| void Leader::HandleServerData(void *aContext, otCoapHeader *aHeader, otMessage *aMessage, |
| const otMessageInfo *aMessageInfo) |
| { |
| static_cast<Leader *>(aContext)->HandleServerData( |
| *static_cast<Coap::Header *>(aHeader), *static_cast<Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void Leader::HandleServerData(Coap::Header &aHeader, Message &aMessage, |
| const Ip6::MessageInfo &aMessageInfo) |
| { |
| ThreadNetworkDataTlv networkData; |
| ThreadRloc16Tlv rloc16; |
| |
| otLogInfoNetData(GetInstance(), "Received network data registration"); |
| |
| if (ThreadTlv::GetTlv(aMessage, ThreadTlv::kRloc16, sizeof(rloc16), rloc16) == OT_ERROR_NONE) |
| { |
| VerifyOrExit(rloc16.IsValid()); |
| RemoveBorderRouter(rloc16.GetRloc16()); |
| } |
| |
| if (ThreadTlv::GetTlv(aMessage, ThreadTlv::kThreadNetworkData, sizeof(networkData), networkData) == |
| OT_ERROR_NONE) |
| { |
| RegisterNetworkData(HostSwap16(aMessageInfo.mPeerAddr.mFields.m16[7]), |
| networkData.GetTlvs(), networkData.GetLength()); |
| } |
| |
| SuccessOrExit(GetNetif().GetCoap().SendEmptyAck(aHeader, aMessageInfo)); |
| |
| otLogInfoNetData(GetInstance(), "Sent network data registration acknowledgment"); |
| |
| exit: |
| return; |
| } |
| |
| void Leader::HandleCommissioningSet(void *aContext, otCoapHeader *aHeader, otMessage *aMessage, |
| const otMessageInfo *aMessageInfo) |
| { |
| static_cast<Leader *>(aContext)->HandleCommissioningSet( |
| *static_cast<Coap::Header *>(aHeader), *static_cast<Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void Leader::HandleCommissioningSet(Coap::Header &aHeader, Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| uint16_t offset = aMessage.GetOffset(); |
| uint8_t length = static_cast<uint8_t>(aMessage.GetLength() - aMessage.GetOffset()); |
| uint8_t tlvs[NetworkData::kMaxSize]; |
| MeshCoP::StateTlv::State state = MeshCoP::StateTlv::kAccept; |
| bool hasSessionId = false; |
| bool hasValidTlv = false; |
| uint16_t sessionId = 0; |
| |
| VerifyOrExit(GetNetif().GetMle().GetRole() == OT_DEVICE_ROLE_LEADER, state = MeshCoP::StateTlv::kReject); |
| |
| aMessage.Read(offset, length, tlvs); |
| |
| // Session Id and Border Router Locator MUST NOT be set, but accept including unexpected or |
| // unknown TLV as long as there is at least one valid TLV. |
| for (MeshCoP::Tlv *cur = reinterpret_cast<MeshCoP::Tlv *>(tlvs); |
| cur < reinterpret_cast<MeshCoP::Tlv *>(tlvs + length); |
| cur = cur->GetNext()) |
| { |
| MeshCoP::Tlv::Type type = cur->GetType(); |
| |
| if (type == MeshCoP::Tlv::kJoinerUdpPort || type == MeshCoP::Tlv::kSteeringData) |
| { |
| hasValidTlv = true; |
| } |
| else if (type == MeshCoP::Tlv::kBorderAgentLocator) |
| { |
| ExitNow(state = MeshCoP::StateTlv::kReject); |
| } |
| else if (type == MeshCoP::Tlv::kCommissionerSessionId) |
| { |
| hasSessionId = true; |
| sessionId = static_cast<MeshCoP::CommissionerSessionIdTlv *>(cur)->GetCommissionerSessionId(); |
| } |
| else |
| { |
| // do nothing for unexpected or unknown TLV |
| } |
| } |
| |
| // verify whether or not commissioner session id TLV is included |
| VerifyOrExit(hasSessionId, state = MeshCoP::StateTlv::kReject); |
| |
| // verify whether or not MGMT_COMM_SET.req includes at least one valid TLV |
| VerifyOrExit(hasValidTlv, state = MeshCoP::StateTlv::kReject); |
| |
| // Find Commissioning Data TLV |
| for (NetworkDataTlv *netDataTlv = reinterpret_cast<NetworkDataTlv *>(mTlvs); |
| netDataTlv < reinterpret_cast<NetworkDataTlv *>(mTlvs + mLength); |
| netDataTlv = netDataTlv->GetNext()) |
| { |
| if (netDataTlv->GetType() == NetworkDataTlv::kTypeCommissioningData) |
| { |
| // Iterate over MeshCoP TLVs and extract desired data |
| for (MeshCoP::Tlv *cur = reinterpret_cast<MeshCoP::Tlv *>(netDataTlv->GetValue()); |
| cur < reinterpret_cast<MeshCoP::Tlv *>(netDataTlv->GetValue() + netDataTlv->GetLength()); |
| cur = cur->GetNext()) |
| { |
| if (cur->GetType() == MeshCoP::Tlv::kCommissionerSessionId) |
| { |
| VerifyOrExit(sessionId == |
| static_cast<MeshCoP::CommissionerSessionIdTlv *>(cur)->GetCommissionerSessionId(), |
| state = MeshCoP::StateTlv::kReject); |
| } |
| else if (cur->GetType() == MeshCoP::Tlv::kBorderAgentLocator) |
| { |
| memcpy(tlvs + length, reinterpret_cast<uint8_t *>(cur), cur->GetLength() + sizeof(MeshCoP::Tlv)); |
| length += (cur->GetLength() + sizeof(MeshCoP::Tlv)); |
| } |
| } |
| } |
| } |
| |
| SetCommissioningData(tlvs, length); |
| |
| exit: |
| |
| if (GetNetif().GetMle().GetRole() == OT_DEVICE_ROLE_LEADER) |
| { |
| SendCommissioningSetResponse(aHeader, aMessageInfo, state); |
| } |
| |
| return; |
| } |
| |
| void Leader::HandleCommissioningGet(void *aContext, otCoapHeader *aHeader, otMessage *aMessage, |
| const otMessageInfo *aMessageInfo) |
| { |
| static_cast<Leader *>(aContext)->HandleCommissioningGet( |
| *static_cast<Coap::Header *>(aHeader), *static_cast<Message *>(aMessage), |
| *static_cast<const Ip6::MessageInfo *>(aMessageInfo)); |
| } |
| |
| void Leader::HandleCommissioningGet(Coap::Header &aHeader, Message &aMessage, const Ip6::MessageInfo &aMessageInfo) |
| { |
| MeshCoP::Tlv tlv; |
| uint16_t offset = aMessage.GetOffset(); |
| uint8_t tlvs[NetworkData::kMaxSize]; |
| uint8_t length = 0; |
| |
| while (offset < aMessage.GetLength()) |
| { |
| aMessage.Read(offset, sizeof(tlv), &tlv); |
| |
| if (tlv.GetType() == MeshCoP::Tlv::kGet) |
| { |
| length = tlv.GetLength(); |
| aMessage.Read(offset + sizeof(MeshCoP::Tlv), length, tlvs); |
| break; |
| } |
| |
| offset += sizeof(tlv) + tlv.GetLength(); |
| } |
| |
| SendCommissioningGetResponse(aHeader, aMessageInfo, tlvs, length); |
| } |
| |
| void Leader::SendCommissioningGetResponse(const Coap::Header &aRequestHeader, const Ip6::MessageInfo &aMessageInfo, |
| uint8_t *aTlvs, uint8_t aLength) |
| { |
| ThreadNetif &netif = GetNetif(); |
| otError error = OT_ERROR_NONE; |
| Coap::Header responseHeader; |
| Message *message; |
| uint8_t index; |
| uint8_t *data = NULL; |
| uint8_t length = 0; |
| |
| responseHeader.SetDefaultResponseHeader(aRequestHeader); |
| responseHeader.SetPayloadMarker(); |
| |
| VerifyOrExit((message = MeshCoP::NewMeshCoPMessage(netif.GetCoap(), responseHeader)) != NULL, |
| error = OT_ERROR_NO_BUFS); |
| |
| for (NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(mTlvs); |
| cur < reinterpret_cast<NetworkDataTlv *>(mTlvs + mLength); |
| cur = cur->GetNext()) |
| { |
| if (cur->GetType() == NetworkDataTlv::kTypeCommissioningData) |
| { |
| data = cur->GetValue(); |
| length = cur->GetLength(); |
| break; |
| } |
| } |
| |
| VerifyOrExit(data && length, error = OT_ERROR_DROP); |
| |
| if (aLength == 0) |
| { |
| SuccessOrExit(error = message->Append(data, length)); |
| } |
| else |
| { |
| for (index = 0; index < aLength; index++) |
| { |
| for (MeshCoP::Tlv *cur = reinterpret_cast<MeshCoP::Tlv *>(data); |
| cur < reinterpret_cast<MeshCoP::Tlv *>(data + length); |
| cur = cur->GetNext()) |
| { |
| if (cur->GetType() == aTlvs[index]) |
| { |
| SuccessOrExit(error = message->Append(cur, sizeof(NetworkDataTlv) + cur->GetLength())); |
| break; |
| } |
| } |
| } |
| } |
| |
| if (message->GetLength() == responseHeader.GetLength()) |
| { |
| // no payload, remove coap payload marker |
| message->SetLength(message->GetLength() - 1); |
| } |
| |
| SuccessOrExit(error = netif.GetCoap().SendMessage(*message, aMessageInfo)); |
| |
| otLogInfoMeshCoP(GetInstance(), "sent commissioning dataset get response"); |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| } |
| |
| void Leader::SendCommissioningSetResponse(const Coap::Header &aRequestHeader, const Ip6::MessageInfo &aMessageInfo, |
| MeshCoP::StateTlv::State aState) |
| { |
| ThreadNetif &netif = GetNetif(); |
| otError error = OT_ERROR_NONE; |
| Coap::Header responseHeader; |
| Message *message; |
| MeshCoP::StateTlv state; |
| |
| responseHeader.SetDefaultResponseHeader(aRequestHeader); |
| responseHeader.SetPayloadMarker(); |
| |
| VerifyOrExit((message = MeshCoP::NewMeshCoPMessage(netif.GetCoap(), responseHeader)) != NULL, |
| error = OT_ERROR_NO_BUFS); |
| |
| state.Init(); |
| state.SetState(aState); |
| SuccessOrExit(error = message->Append(&state, sizeof(state))); |
| |
| SuccessOrExit(error = netif.GetCoap().SendMessage(*message, aMessageInfo)); |
| |
| otLogInfoMeshCoP(GetInstance(), "sent commissioning dataset set response"); |
| |
| exit: |
| |
| if (error != OT_ERROR_NONE && message != NULL) |
| { |
| message->Free(); |
| } |
| } |
| |
| void Leader::RlocLookup(uint16_t aRloc16, bool &aIn, bool &aStable, uint8_t *aTlvs, uint8_t aTlvsLength) |
| { |
| NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(aTlvs); |
| NetworkDataTlv *end = reinterpret_cast<NetworkDataTlv *>(aTlvs + aTlvsLength); |
| NetworkDataTlv *subCur; |
| NetworkDataTlv *subEnd; |
| PrefixTlv *prefix; |
| BorderRouterTlv *borderRouter; |
| HasRouteTlv *hasRoute; |
| BorderRouterEntry *borderRouterEntry; |
| HasRouteEntry *hasRouteEntry; |
| |
| while (cur < end) |
| { |
| if (cur->GetType() == NetworkDataTlv::kTypePrefix) |
| { |
| prefix = static_cast<PrefixTlv *>(cur); |
| subCur = prefix->GetSubTlvs(); |
| subEnd = prefix->GetNext(); |
| |
| while (subCur < subEnd) |
| { |
| switch (subCur->GetType()) |
| { |
| case NetworkDataTlv::kTypeBorderRouter: |
| borderRouter = FindBorderRouter(*prefix); |
| |
| for (uint8_t i = 0; i < borderRouter->GetNumEntries(); i++) |
| { |
| borderRouterEntry = borderRouter->GetEntry(i); |
| |
| if (borderRouterEntry->GetRloc() == aRloc16) |
| { |
| aIn = true; |
| |
| if (borderRouter->IsStable()) |
| { |
| aStable = true; |
| } |
| } |
| } |
| |
| break; |
| |
| case NetworkDataTlv::kTypeHasRoute: |
| hasRoute = FindHasRoute(*prefix); |
| |
| for (uint8_t i = 0; i < hasRoute->GetNumEntries(); i++) |
| { |
| hasRouteEntry = hasRoute->GetEntry(i); |
| |
| if (hasRouteEntry->GetRloc() == aRloc16) |
| { |
| aIn = true; |
| |
| if (hasRoute->IsStable()) |
| { |
| aStable = true; |
| } |
| } |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (aIn && aStable) |
| { |
| ExitNow(); |
| } |
| |
| subCur = subCur->GetNext(); |
| } |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| exit: |
| return; |
| } |
| |
| bool Leader::IsStableUpdated(uint16_t aRloc16, uint8_t *aTlvs, uint8_t aTlvsLength, uint8_t *aTlvsBase, |
| uint8_t aTlvsBaseLength) |
| { |
| bool rval = false; |
| NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(aTlvs); |
| NetworkDataTlv *end = reinterpret_cast<NetworkDataTlv *>(aTlvs + aTlvsLength); |
| |
| while (cur < end) |
| { |
| if (cur->GetType() == NetworkDataTlv::kTypePrefix) |
| { |
| PrefixTlv *prefix = static_cast<PrefixTlv *>(cur); |
| ContextTlv *context = FindContext(*prefix); |
| BorderRouterTlv *borderRouter = FindBorderRouter(*prefix); |
| HasRouteTlv *hasRoute = FindHasRoute(*prefix); |
| |
| if (cur->IsStable() && (!context || borderRouter)) |
| { |
| PrefixTlv *prefixBase = FindPrefix(prefix->GetPrefix(), prefix->GetPrefixLength(), |
| aTlvsBase, aTlvsBaseLength); |
| |
| if (!prefixBase) |
| { |
| ExitNow(rval = true); |
| } |
| |
| if (borderRouter) |
| { |
| BorderRouterTlv *borderRouterBase = FindBorderRouter(*prefixBase); |
| |
| if (!borderRouterBase || memcmp(borderRouter, borderRouterBase, borderRouter->GetLength()) != 0) |
| { |
| ExitNow(rval = true); |
| } |
| } |
| |
| if (hasRoute) |
| { |
| HasRouteTlv *hasRouteBase = FindHasRoute(*prefixBase); |
| |
| if (!hasRouteBase || (memcmp(hasRoute, hasRouteBase, hasRoute->GetLength()) != 0)) |
| { |
| ExitNow(rval = true); |
| } |
| } |
| } |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| exit: |
| OT_UNUSED_VARIABLE(aRloc16); |
| return rval; |
| } |
| |
| otError Leader::RegisterNetworkData(uint16_t aRloc16, uint8_t *aTlvs, uint8_t aTlvsLength) |
| { |
| otError error = OT_ERROR_NONE; |
| bool rlocIn = false; |
| bool rlocStable = false; |
| bool stableUpdated = false; |
| |
| RlocLookup(aRloc16, rlocIn, rlocStable, mTlvs, mLength); |
| |
| if (rlocIn) |
| { |
| if (IsStableUpdated(aRloc16, aTlvs, aTlvsLength, mTlvs, mLength) || |
| IsStableUpdated(aRloc16, mTlvs, mLength, aTlvs, aTlvsLength)) |
| { |
| stableUpdated = true; |
| } |
| |
| SuccessOrExit(error = RemoveRloc(aRloc16)); |
| SuccessOrExit(error = AddNetworkData(aTlvs, aTlvsLength)); |
| |
| mVersion++; |
| |
| if (stableUpdated) |
| { |
| mStableVersion++; |
| } |
| } |
| else |
| { |
| RlocLookup(aRloc16, rlocIn, rlocStable, aTlvs, aTlvsLength); |
| SuccessOrExit(error = AddNetworkData(aTlvs, aTlvsLength)); |
| |
| mVersion++; |
| |
| if (rlocStable) |
| { |
| mStableVersion++; |
| } |
| } |
| |
| GetNetif().SetStateChangedFlags(OT_CHANGED_THREAD_NETDATA); |
| |
| exit: |
| return error; |
| } |
| |
| otError Leader::AddNetworkData(uint8_t *aTlvs, uint8_t aTlvsLength) |
| { |
| NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(aTlvs); |
| NetworkDataTlv *end = reinterpret_cast<NetworkDataTlv *>(aTlvs + aTlvsLength); |
| |
| while (cur < end) |
| { |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypePrefix: |
| AddPrefix(*static_cast<PrefixTlv *>(cur)); |
| otDumpDebgNetData(GetInstance(), "add prefix done", mTlvs, mLength); |
| break; |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| otDumpDebgNetData(GetInstance(), "add done", mTlvs, mLength); |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::AddPrefix(PrefixTlv &aPrefix) |
| { |
| NetworkDataTlv *cur = aPrefix.GetSubTlvs(); |
| NetworkDataTlv *end = aPrefix.GetNext(); |
| |
| while (cur < end) |
| { |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypeHasRoute: |
| AddHasRoute(aPrefix, *static_cast<HasRouteTlv *>(cur)); |
| break; |
| |
| case NetworkDataTlv::kTypeBorderRouter: |
| AddBorderRouter(aPrefix, *static_cast<BorderRouterTlv *>(cur)); |
| break; |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::AddHasRoute(PrefixTlv &aPrefix, HasRouteTlv &aHasRoute) |
| { |
| otError error = OT_ERROR_NONE; |
| PrefixTlv *dstPrefix; |
| HasRouteTlv *dstHasRoute; |
| |
| if ((dstPrefix = FindPrefix(aPrefix.GetPrefix(), aPrefix.GetPrefixLength())) == NULL) |
| { |
| dstPrefix = reinterpret_cast<PrefixTlv *>(mTlvs + mLength); |
| Insert(reinterpret_cast<uint8_t *>(dstPrefix), sizeof(PrefixTlv) + BitVectorBytes(aPrefix.GetPrefixLength())); |
| dstPrefix->Init(aPrefix.GetDomainId(), aPrefix.GetPrefixLength(), aPrefix.GetPrefix()); |
| } |
| |
| if (aHasRoute.IsStable()) |
| { |
| dstPrefix->SetStable(); |
| } |
| |
| if ((dstHasRoute = FindHasRoute(*dstPrefix, aHasRoute.IsStable())) == NULL) |
| { |
| dstHasRoute = static_cast<HasRouteTlv *>(dstPrefix->GetNext()); |
| Insert(reinterpret_cast<uint8_t *>(dstHasRoute), sizeof(HasRouteTlv)); |
| dstPrefix->SetLength(dstPrefix->GetLength() + sizeof(HasRouteTlv)); |
| dstHasRoute->Init(); |
| |
| if (aHasRoute.IsStable()) |
| { |
| dstHasRoute->SetStable(); |
| } |
| } |
| |
| Insert(reinterpret_cast<uint8_t *>(dstHasRoute->GetNext()), sizeof(HasRouteEntry)); |
| dstHasRoute->SetLength(dstHasRoute->GetLength() + sizeof(HasRouteEntry)); |
| dstPrefix->SetLength(dstPrefix->GetLength() + sizeof(HasRouteEntry)); |
| memcpy(dstHasRoute->GetEntry(dstHasRoute->GetNumEntries() - 1), aHasRoute.GetEntry(0), |
| sizeof(HasRouteEntry)); |
| |
| return error; |
| } |
| |
| otError Leader::AddBorderRouter(PrefixTlv &aPrefix, BorderRouterTlv &aBorderRouter) |
| { |
| otError error = OT_ERROR_NONE; |
| PrefixTlv *dstPrefix; |
| ContextTlv *dstContext; |
| BorderRouterTlv *dstBorderRouter; |
| int contextId; |
| |
| if ((dstPrefix = FindPrefix(aPrefix.GetPrefix(), aPrefix.GetPrefixLength())) == NULL) |
| { |
| dstPrefix = reinterpret_cast<PrefixTlv *>(mTlvs + mLength); |
| Insert(reinterpret_cast<uint8_t *>(dstPrefix), sizeof(PrefixTlv) + BitVectorBytes(aPrefix.GetPrefixLength())); |
| dstPrefix->Init(aPrefix.GetDomainId(), aPrefix.GetPrefixLength(), aPrefix.GetPrefix()); |
| } |
| |
| if ((dstContext = FindContext(*dstPrefix)) != NULL) |
| { |
| dstContext->SetCompress(); |
| } |
| else if ((contextId = AllocateContext()) >= 0) |
| { |
| dstContext = static_cast<ContextTlv *>(dstPrefix->GetNext()); |
| Insert(reinterpret_cast<uint8_t *>(dstContext), sizeof(ContextTlv)); |
| dstPrefix->SetLength(dstPrefix->GetLength() + sizeof(ContextTlv)); |
| dstContext->Init(); |
| dstContext->SetCompress(); |
| dstContext->SetContextId(static_cast<uint8_t>(contextId)); |
| dstContext->SetContextLength(aPrefix.GetPrefixLength()); |
| } |
| |
| VerifyOrExit(dstContext != NULL, error = OT_ERROR_NO_BUFS); |
| mContextLastUsed[dstContext->GetContextId() - kMinContextId] = 0; |
| |
| |
| if ((dstBorderRouter = FindBorderRouter(*dstPrefix, aBorderRouter.IsStable())) == NULL) |
| { |
| dstBorderRouter = static_cast<BorderRouterTlv *>(dstPrefix->GetNext()); |
| Insert(reinterpret_cast<uint8_t *>(dstBorderRouter), sizeof(BorderRouterTlv)); |
| dstPrefix->SetLength(dstPrefix->GetLength() + sizeof(BorderRouterTlv)); |
| dstBorderRouter->Init(); |
| } |
| |
| Insert(reinterpret_cast<uint8_t *>(dstBorderRouter->GetNext()), sizeof(BorderRouterEntry)); |
| dstBorderRouter->SetLength(dstBorderRouter->GetLength() + sizeof(BorderRouterEntry)); |
| dstPrefix->SetLength(dstPrefix->GetLength() + sizeof(BorderRouterEntry)); |
| memcpy(dstBorderRouter->GetEntry(dstBorderRouter->GetNumEntries() - 1), aBorderRouter.GetEntry(0), |
| sizeof(BorderRouterEntry)); |
| |
| if (aBorderRouter.IsStable()) |
| { |
| dstPrefix->SetStable(); |
| dstContext->SetStable(); |
| dstBorderRouter->SetStable(); |
| } |
| |
| exit: |
| return error; |
| } |
| |
| int Leader::AllocateContext(void) |
| { |
| int rval = -1; |
| |
| for (int i = kMinContextId; i < kMinContextId + kNumContextIds; i++) |
| { |
| if ((mContextUsed & (1 << i)) == 0) |
| { |
| mContextUsed |= 1 << i; |
| rval = i; |
| otLogInfoNetData(GetInstance(), "Allocated Context ID = %d", rval); |
| ExitNow(); |
| } |
| } |
| |
| exit: |
| return rval; |
| } |
| |
| otError Leader::FreeContext(uint8_t aContextId) |
| { |
| otLogInfoNetData(GetInstance(), "Free Context Id = %d", aContextId); |
| RemoveContext(aContextId); |
| mContextUsed &= ~(1 << aContextId); |
| mVersion++; |
| mStableVersion++; |
| GetNetif().SetStateChangedFlags(OT_CHANGED_THREAD_NETDATA); |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::SendServerDataNotification(uint16_t aRloc16) |
| { |
| otError error = OT_ERROR_NONE; |
| bool rlocIn = false; |
| bool rlocStable = false; |
| |
| RlocLookup(aRloc16, rlocIn, rlocStable, mTlvs, mLength); |
| |
| VerifyOrExit(rlocIn, error = OT_ERROR_NOT_FOUND); |
| |
| SuccessOrExit(error = NetworkData::SendServerDataNotification(aRloc16)); |
| |
| exit: |
| return error; |
| } |
| |
| otError Leader::RemoveRloc(uint16_t aRloc16) |
| { |
| NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(mTlvs); |
| NetworkDataTlv *end; |
| PrefixTlv *prefix; |
| |
| while (1) |
| { |
| end = reinterpret_cast<NetworkDataTlv *>(mTlvs + mLength); |
| |
| if (cur >= end) |
| { |
| break; |
| } |
| |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypePrefix: |
| { |
| prefix = static_cast<PrefixTlv *>(cur); |
| RemoveRloc(*prefix, aRloc16); |
| |
| if (prefix->GetSubTlvsLength() == 0) |
| { |
| Remove(reinterpret_cast<uint8_t *>(prefix), sizeof(NetworkDataTlv) + prefix->GetLength()); |
| continue; |
| } |
| |
| otDumpDebgNetData(GetInstance(), "remove prefix done", mTlvs, mLength); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| otDumpDebgNetData(GetInstance(), "remove done", mTlvs, mLength); |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::RemoveRloc(PrefixTlv &prefix, uint16_t aRloc16) |
| { |
| NetworkDataTlv *cur = prefix.GetSubTlvs(); |
| NetworkDataTlv *end; |
| ContextTlv *context; |
| |
| while (1) |
| { |
| end = prefix.GetNext(); |
| |
| if (cur >= end) |
| { |
| break; |
| } |
| |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypeHasRoute: |
| RemoveRloc(prefix, *static_cast<HasRouteTlv *>(cur), aRloc16); |
| |
| // remove has route tlv if empty |
| if (cur->GetLength() == 0) |
| { |
| prefix.SetSubTlvsLength(prefix.GetSubTlvsLength() - sizeof(HasRouteTlv)); |
| Remove(reinterpret_cast<uint8_t *>(cur), sizeof(HasRouteTlv)); |
| continue; |
| } |
| |
| break; |
| |
| case NetworkDataTlv::kTypeBorderRouter: |
| RemoveRloc(prefix, *static_cast<BorderRouterTlv *>(cur), aRloc16); |
| |
| // remove border router tlv if empty |
| if (cur->GetLength() == 0) |
| { |
| prefix.SetSubTlvsLength(prefix.GetSubTlvsLength() - sizeof(BorderRouterTlv)); |
| Remove(reinterpret_cast<uint8_t *>(cur), sizeof(BorderRouterTlv)); |
| continue; |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| if ((context = FindContext(prefix)) != NULL) |
| { |
| if (prefix.GetSubTlvsLength() == sizeof(ContextTlv)) |
| { |
| context->ClearCompress(); |
| mContextLastUsed[context->GetContextId() - kMinContextId] = Timer::GetNow(); |
| |
| if (mContextLastUsed[context->GetContextId() - kMinContextId] == 0) |
| { |
| mContextLastUsed[context->GetContextId() - kMinContextId] = 1; |
| } |
| |
| mTimer.Start(kStateUpdatePeriod); |
| } |
| else |
| { |
| context->SetCompress(); |
| mContextLastUsed[context->GetContextId() - kMinContextId] = 0; |
| } |
| } |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::RemoveRloc(PrefixTlv &aPrefix, HasRouteTlv &aHasRoute, uint16_t aRloc16) |
| { |
| HasRouteEntry *entry; |
| |
| // remove rloc from has route tlv |
| for (uint8_t i = 0; i < aHasRoute.GetNumEntries(); i++) |
| { |
| entry = aHasRoute.GetEntry(i); |
| |
| if (entry->GetRloc() != aRloc16) |
| { |
| continue; |
| } |
| |
| aHasRoute.SetLength(aHasRoute.GetLength() - sizeof(HasRouteEntry)); |
| aPrefix.SetSubTlvsLength(aPrefix.GetSubTlvsLength() - sizeof(HasRouteEntry)); |
| Remove(reinterpret_cast<uint8_t *>(entry), sizeof(*entry)); |
| break; |
| } |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::RemoveRloc(PrefixTlv &aPrefix, BorderRouterTlv &aBorderRouter, uint16_t aRloc16) |
| { |
| BorderRouterEntry *entry; |
| |
| // remove rloc from border router tlv |
| for (uint8_t i = 0; i < aBorderRouter.GetNumEntries(); i++) |
| { |
| entry = aBorderRouter.GetEntry(i); |
| |
| if (entry->GetRloc() != aRloc16) |
| { |
| continue; |
| } |
| |
| aBorderRouter.SetLength(aBorderRouter.GetLength() - sizeof(BorderRouterEntry)); |
| aPrefix.SetSubTlvsLength(aPrefix.GetSubTlvsLength() - sizeof(BorderRouterEntry)); |
| Remove(reinterpret_cast<uint8_t *>(entry), sizeof(*entry)); |
| break; |
| } |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::RemoveContext(uint8_t aContextId) |
| { |
| NetworkDataTlv *cur = reinterpret_cast<NetworkDataTlv *>(mTlvs); |
| NetworkDataTlv *end; |
| PrefixTlv *prefix; |
| |
| while (1) |
| { |
| end = reinterpret_cast<NetworkDataTlv *>(mTlvs + mLength); |
| |
| if (cur >= end) |
| { |
| break; |
| } |
| |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypePrefix: |
| { |
| prefix = static_cast<PrefixTlv *>(cur); |
| RemoveContext(*prefix, aContextId); |
| |
| if (prefix->GetSubTlvsLength() == 0) |
| { |
| Remove(reinterpret_cast<uint8_t *>(prefix), sizeof(NetworkDataTlv) + prefix->GetLength()); |
| continue; |
| } |
| |
| otDumpDebgNetData(GetInstance(), "remove prefix done", mTlvs, mLength); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| otDumpDebgNetData(GetInstance(), "remove done", mTlvs, mLength); |
| |
| return OT_ERROR_NONE; |
| } |
| |
| otError Leader::RemoveContext(PrefixTlv &aPrefix, uint8_t aContextId) |
| { |
| NetworkDataTlv *cur = aPrefix.GetSubTlvs(); |
| NetworkDataTlv *end; |
| ContextTlv *context; |
| uint8_t length; |
| |
| while (1) |
| { |
| end = aPrefix.GetNext(); |
| |
| if (cur >= end) |
| { |
| break; |
| } |
| |
| switch (cur->GetType()) |
| { |
| case NetworkDataTlv::kTypeContext: |
| { |
| // remove context tlv |
| context = static_cast<ContextTlv *>(cur); |
| |
| if (context->GetContextId() == aContextId) |
| { |
| length = sizeof(NetworkDataTlv) + context->GetLength(); |
| aPrefix.SetSubTlvsLength(aPrefix.GetSubTlvsLength() - length); |
| Remove(reinterpret_cast<uint8_t *>(context), length); |
| continue; |
| } |
| |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| cur = cur->GetNext(); |
| } |
| |
| return OT_ERROR_NONE; |
| } |
| |
| void Leader::HandleTimer(Timer &aTimer) |
| { |
| GetOwner(aTimer).HandleTimer(); |
| } |
| |
| void Leader::HandleTimer(void) |
| { |
| bool contextsWaiting = false; |
| |
| for (uint8_t i = 0; i < kNumContextIds; i++) |
| { |
| if (mContextLastUsed[i] == 0) |
| { |
| continue; |
| } |
| |
| if ((Timer::GetNow() - mContextLastUsed[i]) >= Timer::SecToMsec(mContextIdReuseDelay)) |
| { |
| FreeContext(kMinContextId + i); |
| } |
| else |
| { |
| contextsWaiting = true; |
| } |
| } |
| |
| if (contextsWaiting) |
| { |
| mTimer.Start(kStateUpdatePeriod); |
| } |
| } |
| |
| Leader &Leader::GetOwner(const Context &aContext) |
| { |
| #if OPENTHREAD_ENABLE_MULTIPLE_INSTANCES |
| Leader &leader = *static_cast<Leader *>(aContext.GetContext()); |
| #else |
| Leader &leader = otGetThreadNetif().GetNetworkDataLeader(); |
| OT_UNUSED_VARIABLE(aContext); |
| #endif |
| return leader; |
| } |
| |
| } // namespace NetworkData |
| } // namespace ot |
| |
| #endif // OPENTHREAD_FTD |
| |
