602     struct ifreq ifr;  in SetLinkState()  local
608     memset(&ifr, 0, sizeof(ifr));  in SetLinkState()
609     strncpy(ifr.ifr_name, gNetifName, sizeof(ifr.ifr_name));  in SetLinkState()
610     VerifyOrExit(ioctl(sIpFd, SIOCGIFFLAGS, &ifr) == 0, perror("ioctl"); error = OT_ERROR_FAILED);  in SetLinkState()
612     ifState = ((ifr.ifr_flags & IFF_UP) == IFF_UP) ? true : false;  in SetLinkState()
619         ifr.ifr_flags = aState ? (ifr.ifr_flags | IFF_UP) : (ifr.ifr_flags & ~IFF_UP);  in SetLinkState()
620 …     VerifyOrExit(ioctl(sIpFd, SIOCSIFFLAGS, &ifr) == 0, perror("ioctl"); error = OT_ERROR_FAILED);  in SetLinkState()
2018     struct ifreq ifr;  local
2024     memset(&ifr, 0, sizeof(ifr));
2025     ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
2028         ifr.ifr_flags |= static_cast<short>(IFF_TUN_EXCL);
2036         strncpy(ifr.ifr_name, interfaceName, IFNAMSIZ);
2040         strncpy(ifr.ifr_name, "wpan%d", IFNAMSIZ);
2043     VerifyOrDie(ioctl(sTunFd, TUNSETIFF, static_cast<void *>(&ifr)) == 0, OT_EXIT_ERROR_ERRNO);
2045     strncpy(gNetifName, ifr.ifr_name, sizeof(gNetifName));
2057     ifr.ifr_mtu = static_cast<int>(kMaxIp6Size);
2058     VerifyOrDie(ioctl(sIpFd, SIOCSIFMTU, static_cast<void *>(&ifr)) == 0, OT_EXIT_ERROR_ERRNO);
2100     struct ifreq ifr;  local
2102     memset(&ifr, 0, sizeof(ifr));
2103     strncpy(ifr.ifr_name, gNetifName, sizeof(ifr.ifr_name));
2104     VerifyOrExit(ioctl(sIpFd, SIOCIFDESTROY, &ifr) == 0, perror("ioctl"); error = OT_ERROR_FAILED);