Re: adding new devices to libpcap

[Guy Harris <guy () netapp com>]

On Tue, Jan 14, 2003 at 09:28:11AM +1300, Sean Irvine wrote:
> So far our options appear to be:
>
> (a) Modify pcap-linux.c to include support for our
>     device. This would mean it would be possible to
>     simultaneously use our device and eth0. However,
>     there will be a performance penalty deciding
>     which device is to be read from each packet.

Unless the performance penalty makes the difference between "capture is
possible" and "capture is impossible", I'd vote for that, as you don't
have to have, for example, two versions of various applications linked
against different libraries (or multiple switchable versions of a
libpcap shared library, or something such as that).

Don't forget to have "pcap_findalldevs()" include your device.

However, if it would be possible to have drivers for your device on
other OSes, and to make them have the same API on those other OSes, you
might want to have a "pcap-xxx.c" with routines that "pcap-linux.c"
calls, so that "pcap-bpf.c" or whatever could also call them.

(This all brings to mind the network pods available for Sniffers.)
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