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Date: Sat, 9 Aug 2008 13:36:26 +0200
From: "Adrian Penisoara" <ady@freebsd.ady.ro>
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To: "Ryan French" <rfrench@freebsd.org>
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Subject: Re: Looking for the FreeBSD equivalent of an OpenBSD function
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Hi,

On Sat, Aug 9, 2008 at 12:09 PM, Ryan French <rfrench@freebsd.org> wrote:
> Hi all,
>
> First of all thank you for all the help with my question yesterday, my problem
> today is unfortunately not something syntactical like the last one.
>
> I am working on moving over code from OpenBSDs implementation ofMPLS to
> FreeBSD, and I have run up against a function called 'sysctl_ifq' and I was
> wondering if anyone knew of an equivalent in FreeBSD. The code that calls the
> function is shown below. Thanks for any help.

You mean the following one:

  http://fxr.watson.org/fxr/source/net/if.c?v=OPENBSD#L1944

In FreeBSD I think one can extract the values for queue (maximum)
length and drops stats from the ifq structure using the
_IF_DROP()/_IF_QLEN() macros here:

  http://fxr.watson.org/fxr/source/net/if_var.h?im=bigexcerpts#L247

I'm not sure whether you might need to use locking primitives to query
these values for MP reasons with IF_LOCK()/IF_UNLOCK().

Regards,
Adrian.