From owner-cvs-all@FreeBSD.ORG  Tue Jul  5 17:35:20 2005
Return-Path: <owner-cvs-all@FreeBSD.ORG>
X-Original-To: cvs-all@FreeBSD.org
Delivered-To: cvs-all@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E5E9116A41C;
	Tue,  5 Jul 2005 17:35:20 +0000 (GMT)
	(envelope-from glebius@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id D146B43D53;
	Tue,  5 Jul 2005 17:35:20 +0000 (GMT)
	(envelope-from glebius@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j65HZKuf019007;
	Tue, 5 Jul 2005 17:35:20 GMT
	(envelope-from glebius@repoman.freebsd.org)
Received: (from glebius@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j65HZK06019006;
	Tue, 5 Jul 2005 17:35:20 GMT (envelope-from glebius)
Message-Id: <200507051735.j65HZK06019006@repoman.freebsd.org>
From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Tue, 5 Jul 2005 17:35:20 +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 netgraph.h ng_base.c ng_socket.c
 ng_socketvar.h
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 05 Jul 2005 17:35:21 -0000

glebius     2005-07-05 17:35:20 UTC

  FreeBSD src repository

  Modified files:
    sys/netgraph         netgraph.h ng_base.c ng_socket.c 
                         ng_socketvar.h 
  Log:
  In the splnet times, netgraph was functional and synchronous. Nowadays,
  an item may be queued and processed later. While this is OK for mbufs,
  this is a problem for control messages.
  
  In the framework:
  - Add optional callback function pointer to an item. When item gets
    applied the callback is executed from ng_apply_item().
  - Add new flag NG_PROGRESS. If this flag is supplied, then return
    EINPROGRESS instead of 0 in case if item failed to deliver
    synchronously and was queued.
  - Honor NG_PROGRESS in ng_snd_item().
  
  In ng_socket:
  - When userland sends control message add callback to the item.
  - If ng_snd_item() returns EINPROGRESS, then sleep.
  
  This change fixes possible races in ngctl(8) scripts.
  
  Reviewed by:    julian
  Approved by:    re (scottl)
  
  Revision  Changes    Path
  1.55      +8 -0      src/sys/netgraph/netgraph.h
  1.102     +28 -2     src/sys/netgraph/ng_base.c
  1.67      +44 -1     src/sys/netgraph/ng_socket.c
  1.10      +2 -0      src/sys/netgraph/ng_socketvar.h