Re: Virtual device driver programming


Hello!

On Fri, 23 Jun 2006, Johnny Choque wrote:
I'm interested in programming a virtual network device driver -Linux
concept- on a FreeBSD box. The idea behind of this sort of interface is the
following:

"From the kernel's point of view, a network interface is a software object
that can process outgoing packets, and the actual transmission mechanism
remains hidden inside the interface driver. Even though most interfaces are
associated to physical devices (or, for the loopback interface, to a
software-only data loop), it is possible to design network interface drivers
that rely on other interfaces to perform actual packet transmission. The
idea of a ``virtual'' interface can be useful to implement special-purpose
processing on data packets while avoiding to hack with the network subsystem
of the kernel."

Isn't this exactly the same thing that FreeBSD's Netgraph subsystem does?

man 4 netgraph


Sincerely, Dmitry
--
Atlantis ISP, System Administrator
e-mail: dmitry@xxxxxxxxxxxxxx
nic-hdl: LYNX-RIPE
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