espressif/openthread
1
0
Fork 0
mirror of https://github.com/espressif/openthread.git synced 2026-08-24 11:19:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

[nat64] add functions for processing IPv4 packets (#7824)

Browse Source 
With NAT64, we need to handle the IPv4 packets inside the border
router functions in OpenThread core.

This commit introduces a few new classes for NAT64:
- Add `Ip4::Cidr` (for specifying CIDR block of translated packets)
- Updated Ip4 address format -- use a union of (m8[4], m16[2], m32)
  instead of 4 bytes.
- Extend `Checksum` for supporting ICMP in Ip4 (and TCP4 / UDP4) and
  IPv4 header.
This commit is contained in:
Song GUO
2022-07-15 10:54:20 -07:00
committed by GitHub
parent 13416b15fb
commit 03c9b9389d
21 changed files with 1465 additions and 199 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/unit/test_ip_address.cpp
+71 -2
View File
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, The OpenThread Authors.
* Copyright (c) 2019-2022, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -28,7 +28,8 @@
#include <limits.h>
#include "net/ip4_address.hpp"
#include "common/encoding.hpp"
#include "net/ip4_types.hpp"
#include "net/ip6_address.hpp"
#include "test_util.h"
@@ -444,6 +445,73 @@ void TestIp4Ip6Translation(void)
VerifyOrQuit(address == expectedAddress, "Ip6::SynthesizeFromIp4Address() failed");
}
for (const TestCase &testCase : kTestCases)
{
const ot::Ip4::Address expectedAddress = ip4Address;
ot::Ip4::Address address;
ot::Ip6::Address ip6Address;
SuccessOrQuit(ip6Address.FromString(testCase.mIp6Address));
address.ExtractFromIp6Address(testCase.mLength, ip6Address);
printf("Ipv6Address: %-36s IPv4Addr: %-12s Expected: %s\n", testCase.mIp6Address,
address.ToString().AsCString(), expectedAddress.ToString().AsCString());
VerifyOrQuit(address == expectedAddress, "Ip4::ExtractFromIp6Address() failed");
}
}
void TestIp4Cidr(void)
{
using ot::Encoding::BigEndian::HostSwap32;
struct TestCase
{
const char * mNetwork;
const uint8_t mLength;
const uint32_t mHost;
const char * mOutcome;
};
const TestCase kTestCases[] = {
{"172.16.12.34", 32, 0x12345678, "172.16.12.34"}, {"172.16.12.34", 31, 0x12345678, "172.16.12.34"},
{"172.16.12.34", 30, 0x12345678, "172.16.12.32"}, {"172.16.12.34", 29, 0x12345678, "172.16.12.32"},
{"172.16.12.34", 28, 0x12345678, "172.16.12.40"}, {"172.16.12.34", 27, 0x12345678, "172.16.12.56"},
{"172.16.12.34", 26, 0x12345678, "172.16.12.56"}, {"172.16.12.34", 25, 0x12345678, "172.16.12.120"},
{"172.16.12.34", 24, 0x12345678, "172.16.12.120"}, {"172.16.12.34", 23, 0x12345678, "172.16.12.120"},
{"172.16.12.34", 22, 0x12345678, "172.16.14.120"}, {"172.16.12.34", 21, 0x12345678, "172.16.14.120"},
{"172.16.12.34", 20, 0x12345678, "172.16.6.120"}, {"172.16.12.34", 19, 0x12345678, "172.16.22.120"},
{"172.16.12.34", 18, 0x12345678, "172.16.22.120"}, {"172.16.12.34", 17, 0x12345678, "172.16.86.120"},
{"172.16.12.34", 16, 0x12345678, "172.16.86.120"}, {"172.16.12.34", 15, 0x12345678, "172.16.86.120"},
{"172.16.12.34", 14, 0x12345678, "172.16.86.120"}, {"172.16.12.34", 13, 0x12345678, "172.20.86.120"},
{"172.16.12.34", 12, 0x12345678, "172.20.86.120"}, {"172.16.12.34", 11, 0x12345678, "172.20.86.120"},
{"172.16.12.34", 10, 0x12345678, "172.52.86.120"}, {"172.16.12.34", 9, 0x12345678, "172.52.86.120"},
{"172.16.12.34", 8, 0x12345678, "172.52.86.120"}, {"172.16.12.34", 7, 0x12345678, "172.52.86.120"},
{"172.16.12.34", 6, 0x12345678, "174.52.86.120"}, {"172.16.12.34", 5, 0x12345678, "170.52.86.120"},
{"172.16.12.34", 4, 0x12345678, "162.52.86.120"}, {"172.16.12.34", 3, 0x12345678, "178.52.86.120"},
{"172.16.12.34", 2, 0x12345678, "146.52.86.120"}, {"172.16.12.34", 1, 0x12345678, "146.52.86.120"},
{"172.16.12.34", 0, 0x12345678, "18.52.86.120"},
};
for (const TestCase &testCase : kTestCases)
{
ot::Ip4::Address network;
ot::Ip4::Cidr cidr;
ot::Ip4::Address generated;
network.FromString(testCase.mNetwork);
cidr.mAddress = network;
cidr.mLength = testCase.mLength;
generated.SynthesizeFromCidrAndHost(cidr, testCase.mHost);
printf("CIDR: %-18s HostID: %-8x Host: %-14s Expected: %s\n", cidr.ToString().AsCString(), testCase.mHost,
generated.ToString().AsCString(), testCase.mOutcome);
VerifyOrQuit(strcmp(generated.ToString().AsCString(), testCase.mOutcome) == 0,
"Ip4::Address::SynthesizeFromCidrAndHost() failed");
}
}
int main(void)
@@ -453,6 +521,7 @@ int main(void)
TestIp6AddressFromString();
TestIp6Prefix();
TestIp4Ip6Translation();
TestIp4Cidr();
printf("All tests passed\n");
return 0;
}