> How a network device driver notify the IP layer the MTU in liunx, which function will be called or a MTU struct member will be changed? MTU is a MAC layer concept. You can use ifconfig to set the mtu or through the netdevice structure for the corresponding device (dev->change_mtu(...)) in kernel space. I believe the dev->mtu value is just for reading but not for changing the value itself. regards, Mazhar - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
