Re: mbuf question
Re: mbuf question
- Subject: Re: mbuf question
- From: Justin Walker <email@hidden>
- Date: Tue, 5 Aug 2003 10:24:34 -0500
On Tuesday, Aug 5, 2003, at 10:06 America/Chicago, Stiphane Sudre wrote:
Q: Can a non PacketHeader mbuf use an external storage?
i.e. can the M_EXT flag be set on a mbuf with no M_PKTHDR flag?
I had a look at the book "The Design and Implementation of the 4.4 BSD
OS" but did not find an answer to this.
The theoretical answer is 'yes'. Mbuf processing should deal with each
mbuf individually, without regard to the chain its in. It is possible
that some code doesn't obey this rule, but I don't know of any
off-hand. It's easy to screw this up, so the possibility can't be
ruled out, but it should work.
Are you having problems, or just checking?
Regards,
Justin
--
Justin C. Walker, Curmudgeon-At-Large *
Institute for General Semantics | Men are from Earth.
| Women are from Earth.
| Deal with it.
*--------------------------------------*-------------------------------*
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