| /* |
| * |
| * Copyright (c) 2021-2022 Project CHIP Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * Utilities for accessing parameters of the network interface and the wireless |
| * statistics(extracted from /proc/net/wireless) on Linux platforms. |
| */ |
| |
| #include <app-common/zap-generated/enums.h> |
| #include <platform/Linux/ConnectivityUtils.h> |
| #include <platform/internal/CHIPDeviceLayerInternal.h> |
| |
| #include <arpa/inet.h> |
| #include <ifaddrs.h> |
| #include <linux/ethtool.h> |
| #include <linux/if_link.h> |
| #include <linux/sockios.h> |
| #include <linux/wireless.h> |
| #include <netdb.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <lib/core/CHIPEncoding.h> |
| #include <lib/support/CHIPMemString.h> |
| #include <lib/support/CodeUtils.h> |
| |
| using namespace ::chip::app::Clusters::GeneralDiagnostics; |
| |
| namespace chip { |
| namespace DeviceLayer { |
| namespace Internal { |
| |
| uint16_t ConnectivityUtils::Map2400MHz(const uint8_t inChannel) |
| { |
| uint16_t frequency = 0; |
| |
| if (inChannel >= 1 && inChannel <= 13) |
| { |
| frequency = static_cast<uint16_t>(2412 + ((inChannel - 1) * 5)); |
| } |
| else if (inChannel == 14) |
| { |
| frequency = 2484; |
| } |
| |
| return frequency; |
| } |
| |
| uint16_t ConnectivityUtils::Map5000MHz(const uint8_t inChannel) |
| { |
| uint16_t frequency = 0; |
| |
| switch (inChannel) |
| { |
| case 183: |
| frequency = 4915; |
| break; |
| case 184: |
| frequency = 4920; |
| break; |
| case 185: |
| frequency = 4925; |
| break; |
| case 187: |
| frequency = 4935; |
| break; |
| case 188: |
| frequency = 4940; |
| break; |
| case 189: |
| frequency = 4945; |
| break; |
| case 192: |
| frequency = 4960; |
| break; |
| case 196: |
| frequency = 4980; |
| break; |
| case 7: |
| frequency = 5035; |
| break; |
| case 8: |
| frequency = 5040; |
| break; |
| case 9: |
| frequency = 5045; |
| break; |
| case 11: |
| frequency = 5055; |
| break; |
| case 12: |
| frequency = 5060; |
| break; |
| case 16: |
| frequency = 5080; |
| break; |
| case 34: |
| frequency = 5170; |
| break; |
| case 36: |
| frequency = 5180; |
| break; |
| case 38: |
| frequency = 5190; |
| break; |
| case 40: |
| frequency = 5200; |
| break; |
| case 42: |
| frequency = 5210; |
| break; |
| case 44: |
| frequency = 5220; |
| break; |
| case 46: |
| frequency = 5230; |
| break; |
| case 48: |
| frequency = 5240; |
| break; |
| case 52: |
| frequency = 5260; |
| break; |
| case 56: |
| frequency = 5280; |
| break; |
| case 60: |
| frequency = 5300; |
| break; |
| case 64: |
| frequency = 5320; |
| break; |
| case 100: |
| frequency = 5500; |
| break; |
| case 104: |
| frequency = 5520; |
| break; |
| case 108: |
| frequency = 5540; |
| break; |
| case 112: |
| frequency = 5560; |
| break; |
| case 116: |
| frequency = 5580; |
| break; |
| case 120: |
| frequency = 5600; |
| break; |
| case 124: |
| frequency = 5620; |
| break; |
| case 128: |
| frequency = 5640; |
| break; |
| case 132: |
| frequency = 5660; |
| break; |
| case 136: |
| frequency = 5680; |
| break; |
| case 140: |
| frequency = 5700; |
| break; |
| case 149: |
| frequency = 5745; |
| break; |
| case 153: |
| frequency = 5765; |
| break; |
| case 157: |
| frequency = 5785; |
| break; |
| case 161: |
| frequency = 5805; |
| break; |
| case 165: |
| frequency = 5825; |
| break; |
| } |
| |
| return frequency; |
| } |
| |
| uint16_t ConnectivityUtils::MapChannelToFrequency(const uint16_t inBand, const uint8_t inChannel) |
| { |
| uint16_t frequency = 0; |
| |
| if (inBand == kWiFi_BAND_2_4_GHZ) |
| { |
| frequency = Map2400MHz(inChannel); |
| } |
| else if (inBand == kWiFi_BAND_5_0_GHZ) |
| { |
| frequency = Map5000MHz(inChannel); |
| } |
| |
| return frequency; |
| } |
| |
| uint8_t ConnectivityUtils::MapFrequencyToChannel(const uint16_t frequency) |
| { |
| if (frequency < 2412) |
| return 0; |
| |
| if (frequency < 2484) |
| return (frequency - 2407) / 5; |
| |
| if (frequency == 2484) |
| return 14; |
| |
| return frequency / 5 - 1000; |
| } |
| |
| double ConnectivityUtils::ConvertFrequenceToFloat(const iw_freq * in) |
| { |
| double result = (double) in->m; |
| |
| for (int i = 0; i < in->e; i++) |
| result *= 10; |
| |
| return result; |
| } |
| |
| InterfaceType ConnectivityUtils::GetInterfaceConnectionType(const char * ifname) |
| { |
| InterfaceType ret = InterfaceType::EMBER_ZCL_INTERFACE_TYPE_UNSPECIFIED; |
| int sock = -1; |
| |
| if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) |
| { |
| ChipLogError(DeviceLayer, "Failed to open socket"); |
| return InterfaceType::EMBER_ZCL_INTERFACE_TYPE_UNSPECIFIED; |
| } |
| |
| // Test wireless extensions for CONNECTION_WIFI |
| struct iwreq pwrq = {}; |
| Platform::CopyString(pwrq.ifr_name, ifname); |
| |
| if (ioctl(sock, SIOCGIWNAME, &pwrq) != -1) |
| { |
| ret = InterfaceType::EMBER_ZCL_INTERFACE_TYPE_WI_FI; |
| } |
| else if ((strncmp(ifname, "en", 2) == 0) || (strncmp(ifname, "eth", 3) == 0)) |
| { |
| struct ethtool_cmd ecmd = {}; |
| ecmd.cmd = ETHTOOL_GSET; |
| struct ifreq ifr = {}; |
| ifr.ifr_data = reinterpret_cast<char *>(&ecmd); |
| Platform::CopyString(ifr.ifr_name, ifname); |
| |
| if (ioctl(sock, SIOCETHTOOL, &ifr) != -1) |
| ret = InterfaceType::EMBER_ZCL_INTERFACE_TYPE_ETHERNET; |
| } |
| |
| close(sock); |
| |
| return ret; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetInterfaceHardwareAddrs(const char * ifname, uint8_t * buf, size_t bufSize) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| int skfd; |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (ifname[0] != '\0') |
| { |
| struct ifreq req; |
| |
| strcpy(req.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFHWADDR, &req) != -1) |
| { |
| // Copy 48-bit IEEE MAC Address |
| VerifyOrReturnError(bufSize >= 6, CHIP_ERROR_BUFFER_TOO_SMALL); |
| |
| memset(buf, 0, bufSize); |
| memcpy(buf, req.ifr_ifru.ifru_hwaddr.sa_data, 6); |
| err = CHIP_NO_ERROR; |
| } |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetInterfaceIPv4Addrs(const char * ifname, uint8_t & size, NetworkInterface * ifp) |
| { |
| CHIP_ERROR err; |
| struct ifaddrs * ifaddr = nullptr; |
| |
| if (getifaddrs(&ifaddr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Failed to get network interfaces"); |
| err = CHIP_ERROR_READ_FAILED; |
| } |
| else |
| { |
| uint8_t index = 0; |
| |
| for (struct ifaddrs * ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) |
| { |
| if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET) |
| { |
| if (strcmp(ifname, ifa->ifa_name) == 0) |
| { |
| void * addPtr = &((struct sockaddr_in *) ifa->ifa_addr)->sin_addr; |
| |
| memcpy(ifp->Ipv4AddressesBuffer[index], addPtr, kMaxIPv4AddrSize); |
| ifp->Ipv4AddressSpans[index] = ByteSpan(ifp->Ipv4AddressesBuffer[index], kMaxIPv4AddrSize); |
| index++; |
| |
| if (index >= kMaxIPv4AddrCount) |
| { |
| break; |
| } |
| } |
| } |
| } |
| |
| if (index > 0) |
| { |
| err = CHIP_NO_ERROR; |
| size = index; |
| } |
| |
| freeifaddrs(ifaddr); |
| } |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetInterfaceIPv6Addrs(const char * ifname, uint8_t & size, NetworkInterface * ifp) |
| { |
| CHIP_ERROR err; |
| struct ifaddrs * ifaddr = nullptr; |
| |
| if (getifaddrs(&ifaddr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Failed to get network interfaces"); |
| err = CHIP_ERROR_READ_FAILED; |
| } |
| else |
| { |
| uint8_t index = 0; |
| |
| for (struct ifaddrs * ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) |
| { |
| if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET6) |
| { |
| if (strcmp(ifname, ifa->ifa_name) == 0) |
| { |
| void * addPtr = &((struct sockaddr_in6 *) ifa->ifa_addr)->sin6_addr; |
| |
| memcpy(ifp->Ipv6AddressesBuffer[index], addPtr, kMaxIPv6AddrSize); |
| ifp->Ipv6AddressSpans[index] = ByteSpan(ifp->Ipv6AddressesBuffer[index], kMaxIPv6AddrSize); |
| index++; |
| |
| if (index >= kMaxIPv6AddrCount) |
| { |
| break; |
| } |
| } |
| } |
| } |
| |
| if (index > 0) |
| { |
| err = CHIP_NO_ERROR; |
| size = index; |
| } |
| |
| freeifaddrs(ifaddr); |
| } |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiInterfaceName(char * ifname, size_t bufSize) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| struct ifaddrs * ifaddr = nullptr; |
| |
| if (getifaddrs(&ifaddr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Failed to get network interfaces"); |
| } |
| else |
| { |
| struct ifaddrs * ifa = nullptr; |
| |
| /* Walk through linked list, maintaining head pointer so we |
| can free list later */ |
| for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) |
| { |
| if (GetInterfaceConnectionType(ifa->ifa_name) == InterfaceType::EMBER_ZCL_INTERFACE_TYPE_WI_FI) |
| { |
| Platform::CopyString(ifname, bufSize, ifa->ifa_name); |
| err = CHIP_NO_ERROR; |
| break; |
| } |
| } |
| |
| freeifaddrs(ifaddr); |
| } |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiParameter(int skfd, /* Socket to the kernel */ |
| const char * ifname, /* Device name */ |
| int request, /* WE ID */ |
| struct iwreq * pwrq) /* Fixed part of the request */ |
| { |
| /* Set device name */ |
| Platform::CopyString(pwrq->ifr_name, ifname); |
| |
| /* Do the request */ |
| if (ioctl(skfd, request, pwrq) < 0) |
| { |
| return CHIP_ERROR_BAD_REQUEST; |
| } |
| |
| return CHIP_NO_ERROR; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiStats(int skfd, const char * ifname, struct iw_statistics * stats) |
| { |
| struct iwreq wrq; |
| |
| wrq.u.data.pointer = (caddr_t) stats; |
| wrq.u.data.length = sizeof(struct iw_statistics); |
| wrq.u.data.flags = 1; /*Clear updated flag */ |
| Platform::CopyString(wrq.ifr_name, ifname); |
| |
| return GetWiFiParameter(skfd, ifname, SIOCGIWSTATS, &wrq); |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiChannelNumber(const char * ifname, uint16_t & channelNumber) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| |
| struct iwreq wrq; |
| int skfd; |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (GetWiFiParameter(skfd, ifname, SIOCGIWFREQ, &wrq) == CHIP_NO_ERROR) |
| { |
| double freq = ConvertFrequenceToFloat(&(wrq.u.freq)); |
| VerifyOrReturnError((freq / 1000000) <= UINT16_MAX, CHIP_ERROR_INVALID_INTEGER_VALUE); |
| channelNumber = MapFrequencyToChannel(static_cast<uint16_t>(freq / 1000000)); |
| |
| err = CHIP_NO_ERROR; |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiRssi(const char * ifname, int8_t & rssi) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| struct iw_statistics stats; |
| int skfd; |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (GetWiFiStats(skfd, ifname, &stats) == CHIP_NO_ERROR) |
| { |
| struct iw_quality * qual = &stats.qual; |
| |
| /* Check if the statistics are in RCPI (IEEE 802.11k) */ |
| if (qual->updated & IW_QUAL_RCPI) |
| { /* Deal with signal level in RCPI */ |
| /* RCPI = int{(Power in dBm +110)*2} for 0dbm > Power > -110dBm */ |
| if (!(qual->updated & IW_QUAL_LEVEL_INVALID)) |
| { |
| double rcpilevel = (qual->level / 2.0) - 110.0; |
| VerifyOrReturnError(rcpilevel <= INT8_MAX, CHIP_ERROR_INVALID_INTEGER_VALUE); |
| rssi = static_cast<int8_t>(rcpilevel); |
| err = CHIP_NO_ERROR; |
| } |
| } |
| else |
| { /* Check if the statistics are in dBm */ |
| if (qual->updated & IW_QUAL_DBM) |
| { /* Deal with signal level in dBm (absolute power measurement) */ |
| if (!(qual->updated & IW_QUAL_LEVEL_INVALID)) |
| { |
| int dblevel = qual->level; |
| /* Implement a range for dBm[-192; 63] */ |
| if (qual->level >= 64) |
| dblevel -= 0x100; |
| |
| VerifyOrReturnError(dblevel <= INT8_MAX, CHIP_ERROR_INVALID_INTEGER_VALUE); |
| rssi = static_cast<int8_t>(dblevel); |
| err = CHIP_NO_ERROR; |
| } |
| } |
| else |
| { /* Deal with signal level as relative value (0 -> max) */ |
| if (!(qual->updated & IW_QUAL_LEVEL_INVALID)) |
| { |
| VerifyOrReturnError(qual->level <= INT8_MAX, CHIP_ERROR_INVALID_INTEGER_VALUE); |
| rssi = static_cast<int8_t>(qual->level); |
| err = CHIP_NO_ERROR; |
| } |
| } |
| } |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiBeaconLostCount(const char * ifname, uint32_t & beaconLostCount) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| struct iw_statistics stats; |
| int skfd; |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (GetWiFiStats(skfd, ifname, &stats) == CHIP_NO_ERROR) |
| { |
| beaconLostCount = stats.miss.beacon; |
| err = CHIP_NO_ERROR; |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetWiFiCurrentMaxRate(const char * ifname, uint64_t & currentMaxRate) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| struct iwreq wrq; |
| int skfd; |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (GetWiFiParameter(skfd, ifname, SIOCGIWRATE, &wrq) == CHIP_NO_ERROR) |
| { |
| currentMaxRate = wrq.u.bitrate.value; |
| err = CHIP_NO_ERROR; |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetEthInterfaceName(char * ifname, size_t bufSize) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| struct ifaddrs * ifaddr = nullptr; |
| |
| if (getifaddrs(&ifaddr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Failed to get network interfaces"); |
| } |
| else |
| { |
| struct ifaddrs * ifa = nullptr; |
| |
| /* Walk through linked list, maintaining head pointer so we |
| can free list later */ |
| for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) |
| { |
| if (GetInterfaceConnectionType(ifa->ifa_name) == InterfaceType::EMBER_ZCL_INTERFACE_TYPE_ETHERNET) |
| { |
| Platform::CopyString(ifname, bufSize, ifa->ifa_name); |
| err = CHIP_NO_ERROR; |
| break; |
| } |
| } |
| |
| freeifaddrs(ifaddr); |
| } |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetEthPHYRate(const char * ifname, app::Clusters::EthernetNetworkDiagnostics::PHYRateType & pHYRate) |
| { |
| CHIP_ERROR err = CHIP_NO_ERROR; |
| |
| int skfd; |
| uint32_t speed = 0; |
| struct ethtool_cmd ecmd = {}; |
| ecmd.cmd = ETHTOOL_GSET; |
| struct ifreq ifr = {}; |
| |
| ifr.ifr_data = reinterpret_cast<char *>(&ecmd); |
| Platform::CopyString(ifr.ifr_name, ifname); |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (ioctl(skfd, SIOCETHTOOL, &ifr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Cannot get device settings"); |
| close(skfd); |
| return CHIP_ERROR_READ_FAILED; |
| } |
| |
| speed = (ecmd.speed_hi << 16) | ecmd.speed; |
| switch (speed) |
| { |
| case 10: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_10_M; |
| break; |
| case 100: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_100_M; |
| break; |
| case 1000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_1000_M; |
| break; |
| case 25000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_2__5_G; |
| break; |
| case 5000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_5_G; |
| break; |
| case 10000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_10_G; |
| break; |
| case 40000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_40_G; |
| break; |
| case 100000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_100_G; |
| break; |
| case 200000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_200_G; |
| break; |
| case 400000: |
| pHYRate = EmberAfPHYRateType::EMBER_ZCL_PHY_RATE_TYPE_400_G; |
| break; |
| default: |
| ChipLogError(DeviceLayer, "Undefined speed! (%d)\n", speed); |
| err = CHIP_ERROR_READ_FAILED; |
| break; |
| }; |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| CHIP_ERROR ConnectivityUtils::GetEthFullDuplex(const char * ifname, bool & fullDuplex) |
| { |
| CHIP_ERROR err = CHIP_ERROR_READ_FAILED; |
| |
| int skfd; |
| struct ethtool_cmd ecmd = {}; |
| ecmd.cmd = ETHTOOL_GSET; |
| struct ifreq ifr = {}; |
| |
| ifr.ifr_data = reinterpret_cast<char *>(&ecmd); |
| Platform::CopyString(ifr.ifr_name, ifname); |
| |
| if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
| { |
| ChipLogError(DeviceLayer, "Failed to create a channel to the NET kernel."); |
| return CHIP_ERROR_OPEN_FAILED; |
| } |
| |
| if (ioctl(skfd, SIOCETHTOOL, &ifr) == -1) |
| { |
| ChipLogError(DeviceLayer, "Cannot get device settings"); |
| err = CHIP_ERROR_READ_FAILED; |
| } |
| else |
| { |
| fullDuplex = ecmd.duplex == DUPLEX_FULL; |
| err = CHIP_NO_ERROR; |
| } |
| |
| close(skfd); |
| |
| return err; |
| } |
| |
| } // namespace Internal |
| } // namespace DeviceLayer |
| } // namespace chip |
