From owner-freebsd-net  Fri Aug 16  3:19:45 2002
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Date: Fri, 16 Aug 2002 13:19:30 +0300 (EEST)
From: Iasen Kostov <ikostov@otel.net>
To: Julian Elischer <julian@elischer.org>
Cc: Maxim Sobolev <sobomax@FreeBSD.org>, <hackers@FreeBSD.org>,
	<net@FreeBSD.org>
Subject: Re: Increasing size of if_flags field in the ifnet structure [patch
 for  review]
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   Please take a look at this patch. It implement 1 more flag to if_flags
and ofcourse it increases size of this flag field by using if_ipending
which is unused.

On Thu, 15 Aug 2002, Julian Elischer wrote:

> you cannot break ABIs in 4.x
> in 5.x it will probably be ok until (say) 5.1 or something.
>
>
> On Thu, 15 Aug 2002, Maxim Sobolev wrote:
>
> > Folks,
> >
> > When implementing ability to switch interface into promisc mode using
> > ifconfig(8) I've stumbled into the problem with already exhausted
> > space in the `short if_flags' field in the ifnet structure. I need to
> > allocate one new flag, while we already have 16 IFF_* flags, and even
> > one additional flag which is implemented using currently free
> > if_ipending field of the said structure. Attached patch is aimed at
> > increasing size of if_flags to 32 bits, as well as to clean-up
> > if_ipending abuse. Granted, it will break backward ABI compatibility,
> > but IMO it is not a big problem.
> >
> > Comments and suggestions are greatly appreciated. Thanks!
> >
> > -Maxim
>
>
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