Date: Sat, 8 Jun 2002 09:16:06 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: net@freebsd.org Cc: archie@dellroad.org Subject: Re: m->m_pkthdr.header Message-ID: <200206081616.g58GG6v03893@vashon.polstra.com> In-Reply-To: <200206071955.g57JtrJ65814@arch20m.dellroad.org> References: <200206071955.g57JtrJ65814@arch20m.dellroad.org>
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In article <200206071955.g57JtrJ65814@arch20m.dellroad.org>, Archie Cobbs <archie@dellroad.org> wrote: > > I'd like to get rid of this mbuf field "m->m_pkthdr.header". [...] > Any comments/objections? Yes, please bear in mind that if you change the layout of the mbuf structures you will probably break binary compatibility with various commercial network drivers that are shipped in binary form. That's a big pain for those of us who are forced to use such drivers. For that reason I don't think you should make this kind of change in -stable. Current is obviously a different kettle of fish, but even there you should add fillers to replace any structure elements you remove, if possible. John -- John Polstra John D. Polstra & Co., Inc. Seattle, Washington USA "Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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