SIOCGIFMTU        121 net/core/dev_ioctl.c 	case SIOCGIFMTU:	/* Get the MTU of a device */
SIOCGIFMTU        407 net/core/dev_ioctl.c 	case SIOCGIFMTU:
SIOCGIFMTU       3280 net/socket.c   		case SIOCGIFMTU:
SIOCGIFMTU       3496 net/socket.c   	case SIOCGIFMTU:
SIOCGIFMTU        285 tools/testing/selftests/net/udpgso.c 	if (ioctl(fd, SIOCGIFMTU, &ifr))