Bill Paul's network drivers

Warren Block wblock at
Wed Jul 17 18:07:14 UTC 2013

On Wed, 17 Jul 2013, Michel Behr wrote:

> Hi
> I'm considering learning how to build drivers, so I can make my Lenovo S400
> wireless card get detected by FreeBSD.
> The Architecture Handbook cites these "Bill Paul's network drivers".
> 9.5 Network Drivers: Drivers for network devices do not use device nodes in
> order to be accessed. Their selection is based on other decisions made
> inside the kernel and instead of calling open(), use of a network device is
> generally introduced by using the system call socket(2).
> For more information see ifnet(9), the source of the loopback device, and
> Bill Paul's network drivers.
> Where can I find those Bill Paul's network drivers?

In the source tree, mostly:
   find /usr/src -path "*/sys/dev/*" -exec grep -l "Bill Paul" {} \+

Joseph Kong's book "FreeBSD Device Drivers" will likely be useful, too:

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