Re: LINKTYPE_LINUX_SLL2 implementation (libpcap & tcpdump)

[Petr Vorel <pvorel () suse cz>]

Hi,

> > 1) Keeping LINKTYPE_LINUX_SLL [2] altogether with LINKTYPE_LINUX_SLL2, compile
> > both (having one of them as default for linux, second allow to use with -y switch
> > in tcpdump).
> > 2) Keeping LINKTYPE_LINUX_SLL [2] altogether with LINKTYPE_LINUX_SLL2 but
> > compile only one of them (allow to chose via --with-pcap).
> > 3) Replace LINKTYPE_LINUX_SLL with LINKTYPE_LINUX_SLL2.

> > I've got somehow working 3), but some tcpdump tests are failing and I guess
> > that's not what would be accepted due backwards compatibility.
> > I guess 1) is what is wanted,

> Yes.

> It allows somebody to produce a capture file that can be read by software that doesn't yet support SLL2.

It looks like 1) is impossible the need for both to define
pcap_create_interface(). Would it be acceptable implement 2) ?
I.e. having LINKTYPE_LINUX_SLL2 as default, but allow to compile
LINKTYPE_LINUX_SLL instead of LINKTYPE_LINUX_SLL2.

Thanks for comments / ideas / tips.

Kind regards,
Petr
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