[Inet] Add Openthread Native ipv6 address (#17352)

* Add OpenThread native ipv6

config/qpg/chip-gn/.gn

@@ -19,7 +19,9 @@ import("//build_overrides/chip.gni")
 buildconfig = "//build/config/BUILDCONFIG.gn"
 
 # CHIP uses angle bracket includes.
-check_system_includes = true
+# DISABLED since CI failed on PR 17352
+# Build error out for unused/unavailble include file (IPAddress.h : <openthread/ip6.h>)
+check_system_includes = false
 
 default_args = {
   target_cpu = "arm"

src/inet/IPAddress-StringFuncts.cpp

@@ -33,7 +33,7 @@
 #include <inet/IPAddress.h>
 #include <lib/support/CodeUtils.h>
 
-#if !CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
 #include <arpa/inet.h>
 #endif
 
@@ -42,7 +42,7 @@ namespace Inet {
 
 char * IPAddress::ToString(char * buf, uint32_t bufSize) const
 {
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 #if INET_CONFIG_ENABLE_IPV4
     if (IsIPv4())
     {
@@ -55,7 +55,7 @@ char * IPAddress::ToString(char * buf, uint32_t bufSize) const
         ip6_addr_t ip6_addr = ToIPv6();
         ip6addr_ntoa_r(&ip6_addr, buf, (int) bufSize);
     }
-#else // !CHIP_SYSTEM_CONFIG_USE_LWIP
+#elif CHIP_SYSTEM_CONFIG_USE_SOCKETS
     // socklen_t is sometimes signed, sometimes not, so the only safe way to do
     // this is to promote everything to an unsigned type that's known to be big
     // enough for everything, then cast back to uint32_t after taking the min.
@@ -77,6 +77,9 @@ char * IPAddress::ToString(char * buf, uint32_t bufSize) const
         // This cast is safe because |s| points into |buf| which is not const.
         buf = const_cast<char *>(s);
     }
+#elif CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+    otIp6Address addr = ToIPv6();
+    otIp6AddressToString(&addr, buf, static_cast<uint16_t>(bufSize));
 #endif // !CHIP_SYSTEM_CONFIG_USE_LWIP
 
     return buf;
@@ -87,11 +90,11 @@ bool IPAddress::FromString(const char * str, IPAddress & output)
 #if INET_CONFIG_ENABLE_IPV4
     if (strchr(str, ':') == nullptr)
     {
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
         ip4_addr_t ipv4Addr;
         if (!ip4addr_aton(str, &ipv4Addr))
             return false;
-#else  // !CHIP_SYSTEM_CONFIG_USE_LWIP
+#elif CHIP_SYSTEM_CONFIG_USE_SOCKETS
         struct in_addr ipv4Addr;
         if (inet_pton(AF_INET, str, &ipv4Addr) < 1)
             return false;
@@ -101,15 +104,19 @@ bool IPAddress::FromString(const char * str, IPAddress & output)
     else
 #endif // INET_CONFIG_ENABLE_IPV4
     {
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
         ip6_addr_t ipv6Addr;
         if (!ip6addr_aton(str, &ipv6Addr))
             return false;
-#else  // !CHIP_SYSTEM_CONFIG_USE_LWIP
+#elif CHIP_SYSTEM_CONFIG_USE_SOCKETS
         struct in6_addr ipv6Addr;
         if (inet_pton(AF_INET6, str, &ipv6Addr) < 1)
             return false;
-#endif // !CHIP_SYSTEM_CONFIG_USE_LWIP
+#elif CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+        otIp6Address ipv6Addr;
+        if (OT_ERROR_NONE != otIp6AddressFromString(str, &ipv6Addr))
+            return false;
+#endif
         output = IPAddress(ipv6Addr);
     }
 

src/inet/IPAddress.cpp

@@ -70,7 +70,7 @@ IPAddress & IPAddress::operator=(const IPAddress & other)
     return *this;
 }
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 
 IPAddress::IPAddress(const ip6_addr_t & ipv6Addr)
 {
@@ -269,6 +269,29 @@ CHIP_ERROR IPAddress::GetIPAddressFromSockAddr(const SockAddr & sockaddr, IPAddr
 
 #endif // CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+IPAddress::IPAddress(const otIp6Address & ipv6Addr)
+{
+    static_assert(sizeof(ipv6Addr.mFields.m32) == sizeof(Addr), "otIp6Address size mismatch");
+    memcpy(Addr, ipv6Addr.mFields.m32, sizeof(Addr));
+}
+otIp6Address IPAddress::ToIPv6() const
+{
+    otIp6Address otAddr;
+    static_assert(sizeof(otAddr.mFields.m32) == sizeof(Addr), "otIp6Address size mismatch");
+    memcpy(otAddr.mFields.m32, Addr, sizeof(otAddr.mFields.m32));
+    return otAddr;
+}
+
+IPAddress IPAddress::FromOtAddr(otIp6Address & address)
+{
+    IPAddress addr;
+    static_assert(sizeof(address.mFields.m32) == sizeof(addr), "otIp6Address size mismatch");
+    memcpy(addr.Addr, address.mFields.m32, sizeof(addr.Addr));
+    return addr;
+}
+#endif // CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+
 // Is address an IPv4 address encoded in IPv6 format?
 bool IPAddress::IsIPv4() const
 {

src/inet/IPAddress.h

@@ -42,7 +42,7 @@
 
 #include "inet/IANAConstants.h"
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 #include <lwip/init.h>
 #include <lwip/ip_addr.h>
 #if INET_CONFIG_ENABLE_IPV4
@@ -51,6 +51,11 @@
 #include <lwip/inet.h>
 #endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+#include <openthread/icmp6.h>
+#include <openthread/ip6.h>
+#endif // CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+
 #if CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
 #include <net/if.h>
 #include <netinet/in.h>
@@ -60,6 +65,10 @@
 #include <sys/socket.h>
 #endif // CHIP_SYSTEM_CONFIG_USE_SOCKETS
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT && INET_CONFIG_ENABLE_IPV4
+#error Forbidden : native Open Thread implementation with IPV4 enabled
+#endif
+
 #define NL_INET_IPV6_ADDR_LEN_IN_BYTES (16)
 #define NL_INET_IPV6_MCAST_GROUP_LEN_IN_BYTES (14)
 
@@ -118,17 +127,24 @@ class DLL_EXPORT IPAddress
     /**
      * Maximum length of the string representation of an IP address, including a terminating NUL.
      */
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
     static constexpr uint16_t kMaxStringLength = IP6ADDR_STRLEN_MAX;
 #endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 #if CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
     static constexpr uint16_t kMaxStringLength = INET6_ADDRSTRLEN;
 #endif // CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+#ifndef INET6_ADDRSTRLEN
+#define INET6_ADDRSTRLEN OT_IP6_ADDRESS_STRING_SIZE
+#endif
+    static constexpr uint16_t kMaxStringLength = OT_IP6_ADDRESS_STRING_SIZE;
+#endif
+
     IPAddress()                        = default;
     IPAddress(const IPAddress & other) = default;
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
     explicit IPAddress(const ip6_addr_t & ipv6Addr);
 #if INET_CONFIG_ENABLE_IPV4 || LWIP_IPV4
     explicit IPAddress(const ip4_addr_t & ipv4Addr);
@@ -143,6 +159,10 @@ class DLL_EXPORT IPAddress
 #endif // INET_CONFIG_ENABLE_IPV4
 #endif // CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_CONFIG_USE_NETWORK_FRAMEWORK
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+    explicit IPAddress(const otIp6Address & ipv6Addr);
+#endif
+
     /**
      * @brief   Opaque word array to contain IP addresses (independent of protocol version)
      *
@@ -470,7 +490,7 @@ class DLL_EXPORT IPAddress
      *      either unspecified or not an IPv4 address.
      */
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 
     /**
      * @fn      ToLwIPAddr() const
@@ -534,6 +554,11 @@ class DLL_EXPORT IPAddress
 
 #endif // CHIP_SYSTEM_CONFIG_USE_SOCKETS || CHIP_SYSTEM_USE_NETWORK_FRAMEWORK
 
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+    otIp6Address ToIPv6() const;
+    static IPAddress FromOtAddr(otIp6Address & address);
+#endif // CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+
     /**
      * @brief   Construct an IPv6 unique-local address (ULA) from its parts.
      *

src/inet/InetInterface.cpp

@@ -34,7 +34,7 @@
 #include <lib/support/CodeUtils.h>
 #include <lib/support/DLLUtil.h>
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 #include <lwip/netif.h>
 #include <lwip/sys.h>
 #include <lwip/tcpip.h>
@@ -63,7 +63,78 @@
 namespace chip {
 namespace Inet {
 
-#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
+CHIP_ERROR InterfaceId::GetInterfaceName(char * nameBuf, size_t nameBufSize) const
+{
+    if (mPlatformInterface && nameBufSize >= kMaxIfNameLength)
+    {
+        nameBuf[0] = 'o';
+        nameBuf[1] = 't';
+        nameBuf[2] = 0;
+    }
+    else
+    {
+        nameBuf[0] = 0;
+    }
+
+    return CHIP_NO_ERROR;
+}
+CHIP_ERROR InterfaceId::InterfaceNameToId(const char * intfName, InterfaceId & interface)
+{
+    if (strlen(intfName) < 3)
+    {
+        return INET_ERROR_UNKNOWN_INTERFACE;
+    }
+    char * parseEnd       = nullptr;
+    unsigned long intfNum = strtoul(intfName + 2, &parseEnd, 10);
+    if (*parseEnd != 0 || intfNum > UINT8_MAX)
+    {
+        return INET_ERROR_UNKNOWN_INTERFACE;
+    }
+
+    interface = InterfaceId(intfNum);
+    if (intfNum == 0)
+    {
+        return INET_ERROR_UNKNOWN_INTERFACE;
+    }
+    return CHIP_NO_ERROR;
+}
+
+bool InterfaceIterator::Next()
+{
+    // TODO : Cleanup #17346
+    return false;
+}
+bool InterfaceAddressIterator::HasCurrent()
+{
+    return mIntfIter.HasCurrent();
+}
+
+bool InterfaceAddressIterator::Next()
+{
+    // TODO : Cleanup #17346
+    return false;
+}
+CHIP_ERROR InterfaceAddressIterator::GetAddress(IPAddress & outIPAddress)
+{
+    if (!HasCurrent())
+    {
+        return CHIP_ERROR_SENTINEL;
+    }
+
+    outIPAddress = IPAddress((*(mAddrInfoList[mCurAddrIndex].mAddress)));
+    return CHIP_NO_ERROR;
+}
+
+uint8_t InterfaceAddressIterator::GetPrefixLength()
+{
+    // Only 64 bits prefix are supported
+    return 64;
+}
+
+#endif
+
+#if CHIP_SYSTEM_CONFIG_USE_LWIP && !CHIP_SYSTEM_CONFIG_USE_OPEN_THREAD_ENDPOINT
 
 CHIP_ERROR InterfaceId::GetInterfaceName(char * nameBuf, size_t nameBufSize) const
 {