Subject: Re: adding mbuf member
To: None <>
From: Jason Thorpe <>
List: tech-net
Date: 01/29/2000 10:08:05
On Sun, 30 Jan 2000 02:28:05 +0900 wrote:

 > >But then its an ABI change for LKMs.  I guess people will have to recompile
 > >IP Filter.  This will warrant a version number bump (to 1.4R).
 > 	(I hope I do not misread "but then" here)
 > 	Let me check... LKMs with old mbuf.h are not usable regardless from
 > 	the ordering of pkthdr member, due to position change in m_pktdat
 > 	(M_dat.MH.MH_dat.MH_databuf), and MHLEN change.  if we use old LKM
 > 	on new kernel, LKM will overwrite pkthdr portion by mistake.
 > 	Am I correct?

Ah, yes, you're quite right... concern withdrawn... but just make sure to
bump the kernel version :-)

        -- Jason R. Thorpe <>