100     struct ifreq ifr;  in openInterface()  local
136 	strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));  in openInterface()
137 	if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {  in openInterface()
142 	memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);  in openInterface()
144 	if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {  in openInterface()
155     strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));  in openInterface()
156     if (ioctl(fd, SIOCGIFMTU, &ifr) < 0) {  in openInterface()
158     } else if (ifr.ifr_mtu < ETH_DATA_LEN) {  in openInterface()
160 	      ifname, ifr.ifr_mtu, ETH_DATA_LEN);  in openInterface()
169     strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));  in openInterface()
170     if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {  in openInterface()
175     sa.sll_ifindex = ifr.ifr_ifindex;  in openInterface()