inetdev_valid_mtu 1058 net/ipv4/devinet.c if (inetdev_valid_mtu(dev->mtu)) inetdev_valid_mtu 1070 net/ipv4/devinet.c if (!inetdev_valid_mtu(dev->mtu)) inetdev_valid_mtu 1092 net/ipv4/devinet.c if (inetdev_valid_mtu(dev->mtu))