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From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Wed, 2 Nov 2005 15:34:42 +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/netgraph ng_socket.c
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glebius     2005-11-02 15:34:42 UTC

  FreeBSD src repository

  Modified files:
    sys/netgraph         ng_socket.c 
  Log:
  Fix several races between socket closure and node/hook
  destruction:
    - Backout 1.62, since it doesn't fix all possible
      problems.
    - Upon node creation, put an additional reference on node.
    - Add a mutex and refcounter to struct ngsock. Netgraph node,
      control socket and data socket all count as references.
    - Introduce ng_socket_free_priv() which removes one reference
      from ngsock, and frees it when all references has gone.
    - No direct pointers between pcbs and node, all pointing
      is done via struct ngsock and protected with mutex.
  
  Revision  Changes    Path
  1.70      +100 -80   src/sys/netgraph/ng_socket.c