| /* |
| * 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. |
| */ |
| |
| #ifndef OT_POSIX_PLATFORM_MULTICAST_ROUTING_HPP_ |
| #define OT_POSIX_PLATFORM_MULTICAST_ROUTING_HPP_ |
| |
| #include "openthread-posix-config.h" |
| |
| #if OPENTHREAD_CONFIG_BACKBONE_ROUTER_MULTICAST_ROUTING_ENABLE |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include <openthread/backbone_router_ftd.h> |
| #include <openthread/openthread-system.h> |
| |
| #include "platform-posix.h" |
| #include "core/common/non_copyable.hpp" |
| #include "core/net/ip6_address.hpp" |
| #include "lib/url/url.hpp" |
| #include "posix/platform/mainloop.hpp" |
| |
| namespace ot { |
| namespace Posix { |
| |
| class MulticastRoutingManager : public Mainloop::Source, private NonCopyable |
| { |
| public: |
| explicit MulticastRoutingManager() |
| |
| : mLastExpireTime(0) |
| , mMulticastRouterSock(-1) |
| { |
| } |
| |
| void SetUp(void); |
| void TearDown(void); |
| void Update(otSysMainloopContext &aContext) override; |
| void Process(const otSysMainloopContext &aContext) override; |
| void HandleStateChange(otInstance *aInstance, otChangedFlags aFlags); |
| |
| private: |
| enum |
| { |
| kMulticastForwardingCacheExpireTimeout = 300, //< Expire timeout of Multicast Forwarding Cache (in seconds) |
| kMulticastForwardingCacheExpiringInterval = 60, //< Expire interval of Multicast Forwarding Cache (in seconds) |
| kMulitcastForwardingCacheTableSize = |
| OPENTHREAD_POSIX_CONFIG_MAX_MULTICAST_FORWARDING_CACHE_TABLE, //< The max size of MFC table. |
| }; |
| |
| enum MifIndex : uint8_t |
| { |
| kMifIndexNone = 0xff, |
| kMifIndexThread = 0, |
| kMifIndexBackbone = 1, |
| }; |
| |
| class MulticastForwardingCache |
| { |
| friend class MulticastRoutingManager; |
| |
| private: |
| MulticastForwardingCache() |
| : mIif(kMifIndexNone) |
| { |
| } |
| |
| bool IsValid() const { return mIif != kMifIndexNone; } |
| void Set(MifIndex aIif, MifIndex aOif); |
| void Set(const Ip6::Address &aSrcAddr, const Ip6::Address &aGroupAddr, MifIndex aIif, MifIndex aOif); |
| void Erase(void) { mIif = kMifIndexNone; } |
| void SetValidPktCnt(unsigned long aValidPktCnt); |
| |
| Ip6::Address mSrcAddr; |
| Ip6::Address mGroupAddr; |
| uint64_t mLastUseTime; |
| unsigned long mValidPktCnt; |
| MifIndex mIif; |
| MifIndex mOif; |
| }; |
| |
| void Enable(void); |
| void Disable(void); |
| void Add(const Ip6::Address &aAddress); |
| void Remove(const Ip6::Address &aAddress); |
| void UpdateMldReport(const Ip6::Address &aAddress, bool isAdd); |
| bool HasMulticastListener(const Ip6::Address &aAddress) const; |
| bool IsEnabled(void) const { return mMulticastRouterSock >= 0; } |
| void InitMulticastRouterSock(void); |
| void FinalizeMulticastRouterSock(void); |
| void ProcessMulticastRouterMessages(void); |
| otError AddMulticastForwardingCache(const Ip6::Address &aSrcAddr, const Ip6::Address &aGroupAddr, MifIndex aIif); |
| void SaveMulticastForwardingCache(const Ip6::Address &aSrcAddr, |
| const Ip6::Address &aGroupAddr, |
| MifIndex aIif, |
| MifIndex aOif); |
| void UnblockInboundMulticastForwardingCache(const Ip6::Address &aGroupAddr); |
| void RemoveInboundMulticastForwardingCache(const Ip6::Address &aGroupAddr); |
| void ExpireMulticastForwardingCache(void); |
| bool UpdateMulticastRouteInfo(MulticastForwardingCache &aMfc) const; |
| void RemoveMulticastForwardingCache(MulticastForwardingCache &aMfc) const; |
| static const char *MifIndexToString(MifIndex aMif); |
| void DumpMulticastForwardingCache(void) const; |
| static void HandleBackboneMulticastListenerEvent(void * aContext, |
| otBackboneRouterMulticastListenerEvent aEvent, |
| const otIp6Address * aAddress); |
| void HandleBackboneMulticastListenerEvent(otBackboneRouterMulticastListenerEvent aEvent, |
| const Ip6::Address & aAddress); |
| |
| MulticastForwardingCache mMulticastForwardingCacheTable[kMulitcastForwardingCacheTableSize]; |
| uint64_t mLastExpireTime; |
| int mMulticastRouterSock; |
| }; |
| |
| } // namespace Posix |
| } // namespace ot |
| |
| #endif // OPENTHREAD_CONFIG_BACKBONE_ROUTER_MULTICAST_ROUTING_ENABLE |
| |
| #endif // OT_POSIX_PLATFORM_MULTICAST_ROUTING_HPP_ |