On Mon, Dec 17, 2012 at 11:35 AM, Guy Harris <g...@alum.mit.edu> wrote:
> On Dec 17, 2012, at 1:50 AM, "David Laight" <david.lai...@aculab.com> wrote:
>
>> How are you going to tell whether a feature is present in a non-Linux
>> kernel ?
>
> The Linux memory-mapped capture mechanism is not present in a non-Linux 
> kernel, so all the libpcap work involved here would, if necessary on other 
> platforms, have to be done differently on those platforms.  Those platforms 
> would have to have their own mechanisms to indicate whether any changes to 
> filter code, processing of VLAN tags supplied out of band, etc. would need to 
> be done.
>
> The same would apply to other additional features of the Linux memory-mapped 
> capture mechanism that require changes in libpcap.

Exactly.
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