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From: Yar Tikhiy <yar@FreeBSD.org>
Date: Thu, 29 Jun 2006 07:52:30 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/net if_vlan.c
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yar         2006-06-29 07:52:30 UTC

  FreeBSD src repository

  Modified files:
    sys/net              if_vlan.c 
  Log:
  Detach the interface first, do vlan_unconfig() then.
  Previously, another thread could get a pointer to the
  interface by scanning the system-wide list and sleep
  on the global vlan mutex held by vlan_unconfig().
  The interface was gone by the time the other thread
  woke up.
  
  In order to be able to call vlan_unconfig() on a detached
  interface, remove the purely cosmetic bzero'ing of IF_LLADDR
  from the function because a detached interface has no addresses.
  
  Noticed by:     a stress-testing script by maxim
  Reviewed by:    glebius
  
  Revision  Changes    Path
  1.105     +3 -9      src/sys/net/if_vlan.c