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From: Alexander Motin <mav@FreeBSD.org>
Date: Thu, 26 Jul 2007 18:15:02 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/netgraph ng_bpf.c
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mav         2007-07-26 18:15:02 UTC

  FreeBSD src repository

  Modified files:
    sys/netgraph         ng_bpf.c 
  Log:
  Reduce stack usage by 256 bytes per call. It helps to avoid kernel
  stack overflow in complicated traffic filtering setups.
  
  There can be minor performance degradation for the MHLEN < len <= 256 case
  due to additional buffer allocation, but it is a rare case.
  
  Approved by:    re (rwatson), glebius (mentor)
  MFC after:      1 week
  
  Revision  Changes    Path
  1.22      +11 -5     src/sys/netgraph/ng_bpf.c