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From: Bruce M Simpson <bms@FreeBSD.org>
Date: Sat, 12 Sep 2009 19:45:55 +0000 (UTC)
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Subject: cvs commit: src/sys/netinet in_mcast.c
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bms         2009-09-12 19:45:55 UTC

  FreeBSD src repository

  Modified files:
    sys/netinet          in_mcast.c 
  Log:
  SVN rev 197132 on 2009-09-12 19:45:55Z by bms
  
  Tighten input checking in inp_join_group():
   * Don't try to use the source address, when its family is unspecified.
   * If we get a join without a source, on an existing inclusive
     mode group, this is an error, as it would change the filter mode.
  
  Fix a problem with the handling of in_mfilter for new memberships:
   * Do not rely on imf being NULL; it is explicitly initialized to a
     non-NULL pointer when constructing a membership.
   * Explicitly initialize *imf to EX mode when the source address
     is unspecified.
  
  This fixes a problem with in_mfilter slot recycling in the join path.
  
  PR:             138690
  Submitted by:   Stef Walter
  MFC after:      5 days
  
  Revision  Changes    Path
  1.31      +35 -15    src/sys/netinet/in_mcast.c