Re: capture and inject device capabilities in libpcap

[Guy Harris <gharris () sonic net>]

On Nov 18, 2024, at 12:15 PM, Michael Richardson <mcr () sandelman ca> wrote:

> Denis Ovsienko <denis () ovsienko info> wrote:
> > One complication here is that in some cases libpcap may not be aware of
> > a device capability until it gets an error from the OS (as is the case
> > with PCAP_ERROR_CAPTURE_NOTSUP in pcap-linux.c), so pcap_findalldevs()
> > would not be able to set "this device can capture" and "this device can
>
> Are there any operating systems can provide this info?

More than just operating systems - the DAG card drivers are from Endace, not the OS supplier.

> Maybe this becomes an upstream (Kernel) request.

I think most platforms support capturing and injecting on all network interfaces (as long as you have permission to 
open them).
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