mirror of
https://github.com/espressif/openthread.git
synced 2026-10-28 18:24:37 +00:00
Jonathan Hui
3b84b4c5cb
This commit implements the Nexus test specification 1_4_DNS_TC_3 for upstream DNS resolver selection in OpenThread. Nexus Platform Enhancements: - Added OPENTHREAD_CONFIG_DNS_UPSTREAM_QUERY_ENABLE and OPENTHREAD_CONFIG_PLATFORM_DNS_ENABLE to nexus config. - Implemented platform DNS APIs in nexus_dns.cpp, supporting upstream server selection based on prefix lifetimes and reachability. - Added UdpHook to Core to allow tests to intercept and simulate responses for backbone UDP traffic on port 53. - Updated InfraIf::Receive to call Core::HandleUdp for generic UDP interception. - Added raw buffer delivery overloads for InfraIf::SendUdp. Test Implementation: - Created test_1_4_DNS_TC_3.cpp which performs network formation, RA signaling (PIO/RIO/RDNSS), and DNS resolution triggers. - Created verify_1_4_DNS_TC_3.py to validate network behavior, RA contents, and correct upstream query routing using pktverify. - Integrated the new test into CMakeLists.txt and the default run_nexus_tests.sh suite.
88 lines
3.4 KiB
C++
88 lines
3.4 KiB
C++
/*
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* Copyright (c) 2026, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef OT_NEXUS_PLATFORM_NEXUS_DNS_HPP_
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#define OT_NEXUS_PLATFORM_NEXUS_DNS_HPP_
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#include <openthread/platform/dns.h>
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#include "common/heap_allocatable.hpp"
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#include "common/linked_list.hpp"
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#include "common/locator.hpp"
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#include "common/owning_list.hpp"
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#include "instance/instance.hpp"
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#include "net/dnssd_server.hpp"
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#include "net/ip6_address.hpp"
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namespace ot {
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namespace Nexus {
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class Node;
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class UpstreamDns : public InstanceLocator
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{
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public:
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static constexpr uint16_t kDnsPort = 53;
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typedef Dns::ServiceDiscovery::Server::UpstreamQueryTransaction UpstreamQueryTransaction;
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struct PendingQuery : public Heap::Allocatable<PendingQuery>, public LinkedListEntry<PendingQuery>
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{
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bool Matches(const UpstreamQueryTransaction *aTxn) const { return mTxn == aTxn; }
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bool Matches(uint16_t aMessageId, const Ip6::Address &aSrcAddr) const
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{
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return (mMessageId == aMessageId) && (mServerAddress == aSrcAddr);
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}
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UpstreamQueryTransaction *mTxn;
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uint16_t mMessageId;
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Ip6::Address mServerAddress;
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PendingQuery *mNext;
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};
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explicit UpstreamDns(Instance &aInstance);
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~UpstreamDns(void) { Reset(); }
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void StartUpstreamQuery(UpstreamQueryTransaction &aTxn, const Message &aQuery);
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void CancelUpstreamQuery(UpstreamQueryTransaction &aTxn);
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bool HandleUpstreamDnsResponse(const Ip6::Address &aSrcAddress, Message &aMessage);
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bool IsUpstreamQueryAvailable(void) const;
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void Reset(void);
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private:
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bool IsGua(const Ip6::Prefix &aPrefix) const;
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uint16_t CountGuaPrefixes(const Ip6::Address &aRouterAddress) const;
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Error SelectUpstreamDnsServer(Ip6::Address &aSelectedAddress) const;
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OwningList<PendingQuery> mPendingQueries;
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};
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} // namespace Nexus
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} // namespace ot
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#endif // OT_NEXUS_PLATFORM_NEXUS_DNS_HPP_
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