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Top Forums UNIX for Dummies Questions & Answers Simulated driver for Network Interface Adapter Post 302464673 by Chrisdot on Wednesday 20th of October 2010 05:13:55 PM
Old 10-20-2010
Simulated driver for Network Interface Adapter

Hi all, I got sort of a task to do. I have to write in C "simulated network driver". What does it mean?
- It has to run on all network adapters
- It has to be as simple as it can be
- It has to run on all linux distributions (or at least most of them)
- It does not have to run a network service or any network-connected things
- after ifconfig up - it has to run a task - whatever (e.g. show some text, or light a 'caps lock' diode, or something else)
I have never written drivers on linux, but I'm very good at C programming.
Could you give me some hints how to do that?


Regards.
 

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OCE(4)							   BSD Kernel Interfaces Manual 						    OCE(4)

NAME
oce -- Device driver for Emulex OneConnect 10Gb network adapters SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device pci device oce Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_oce_load="YES" DESCRIPTION
Emulex OneConnect adapters come in various skews and with different combinations of NIC, FCoE and iSCSI functions. The oce driver claims the NIC functions in all these adapters. The oce driver supports VLAN Hardware offload, TCP checksum offload, TCP segmentation offload (TSO), Large receive offload (LRO), Bonding, Jumbo frames (from 1500 - 9000), Multiple TX queues, Receive-Side Scaling (RSS) and MSI-X interrupts. HARDWARE
The oce driver supports the following network adapters: o Emulex BladeEngine 2 o Emulex BladeEngine 3 o Emulex Lancer UPDATING FIRMWARE
Adapter firmware updates are persistent. Firmware can be updated by following the steps below: 1. Copy the below code to a Makefile: KMOD=elxflash FIRMWS=imagename.ufi:elxflash .include <bsd.kmod.mk> 2. Replace imagename in above with UFI file name 3. Copy Makefile and UFI file to a directory 4. Execute make & copy generated elxflash.ko to /lib/modules 5. sysctl dev.oce.<if_id>.fw_upgrade=elxflash 6. Reboot the machine In case of issues with supplied UFI, flashing fails with one of the following errors. 1. "Invalid BE3 firmware image" 2. "Invalid Cookie. Firmware image corrupted ?" 3. "cmd to write to flash rom failed." SUPPORT
For general information and support, go to the Emulex website at: http://www.Emulex.com/ or E-Mail at freebsd-drivers@emulex.com. SEE ALSO
ifconfig(8) AUTHORS
The oce driver was written by freebsd-drivers@emulex.com. BSD
February 19, 2012 BSD
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