Subject: Re: if_delete * if_alloc
To: Jason Thorpe <firstname.lastname@example.org>
From: Matt Thomas <email@example.com>
Date: 07/09/1997 13:55:30
At 10:28 AM 7/9/97 -0700, Jason Thorpe wrote:
> > leave the ifnet in the ethercom, and add all the refcount stuff. When
> > the count gets to zero, an (*if_iffree) routine'd get called which'd
> > delete the ifnet, probably by deleting the softc it's within. The softc
> > could already have been unhooked from the config tree.
>Anyhow, I don't like that idea so much... It seems much less correct to
>me... But, I don't have the time or energy to get into an argument about
I don't like the idea of a separately malloc'ed ifnet structure because
of efficiency reasons. Drivers refer to that structure quite a bit and
adding indirect references adds much code (especially on register-poor
architecures list x86). It also forces me to opaque the ifnet which
just makes the code even harder to read.
I rather be called back so I can free the softc myself. Please add an
IFF_DEAD bit. Also increase if_flags to an int (this will help the
alpha significantly since it can just use longword reference instead
of masking and shifting).
Matt Thomas Internet: firstname.lastname@example.org
3am Software Foundry WWW URL: http://www.3am-software.com/bio/matt.html
Nashua, NH Disclaimer: I disavow all knowledge of this message