cvs commit: src/sys/net if_vlan.c

[Yar Tikhiy]

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