Ethernet driver ioctl

Although no in-tree driver currently uses this flag, it can be set and reset by user programs via ioctl, and your driver can use it. The misc-progs/netifdebug program can be used to turn the flag on and off.  · Unlike character drivers, network drivers can only use a certain range (starting at 0x89F0) for custom IOCTLs. The other thing I had to do was to put an ifreq struct as the third argument of the IOCTL call. The ifreq struct has an ifr_name member that is used to select the specific network interface to interact with. These two fixes allowed me to communicate with my driver flawlessly. Looking at speedo_ioctl(), we can see it handles SIOCGDRVCOM, which nicinfo uses to get driver configuration information and counts. If the driver doesn't implement SIOCGDRVCOM, it will fall through at the end of the switch statement to the generic ether_ioctl() function in io-pkt, which actually does implement a very bare-bones version of the nicinfo stats.

Unlike character drivers, network drivers can only use a certain range (starting at 0x89F0) for custom IOCTLs. The other thing I had to do was to put an ifreq struct as the third argument of the IOCTL call. The ifreq struct has an ifr_name member that is used to select the specific network interface to interact with. These two fixes allowed me to communicate with my driver flawlessly. ioctl() is typically implemented as part of the corresponding driver, and then an appropriate function pointer is initialised with it, exactly as in other system calls like open(), read(), etc. For example, in character drivers, it is the ioctl or unlocked_ioctl (since kernel ) function pointer field in the struct file_operations that is to be initialised. Kernel, drivers and embedded Linux development, consulting, training and support. http//free­www.doorway.ru Architecture Network stack Network hardware driver Bus infrastructure (platform, pci, usb, etc.) sk_buff net_device.

Like other kinds of device drivers, a network interface module connects to the rest With the exception of ioctl, which needs some detailed discussion. 4 ឧសភា The driver supports sending and receiving raw Ethernet frames using Prottest exercises the IOCTLs supported by NDISPROT, and sends. Linux supports some standard ioctls to configure network devices. IFF_LOWER_UP Driver signals L1 up (since Linux ) IFF_DORMANT Driver signals.