From owner-freebsd-hackers  Thu Aug 15 12: 0:29 2002
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Date: Thu, 15 Aug 2002 11:50:59 -0700 (PDT)
From: Julian Elischer <julian@elischer.org>
To: Maxim Sobolev <sobomax@FreeBSD.org>
Cc: 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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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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