Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 6 Jun 2001 14:01:35 +0200 (CEST)
From:      brandt@fokus.gmd.de
To:        FreeBSD-gnats-submit@freebsd.org
Subject:   kern/27906: NG_SEND_MSG_HOOK fails to set the return address for the response
Message-ID:  <200106061201.f56C1Zx67238@fokus.gmd.de>

next in thread | raw e-mail | index | archive | help

>Number:         27906
>Category:       kern
>Synopsis:       NG_SEND_MSG_HOOK fails to set the return address for the response
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 06 05:10:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Harti Brandt
>Release:        FreeBSD 5.0-CURRENT i386
>Organization:
GMD Fokus, Berlin, Germany
>Environment:
System: FreeBSD beagle.fokus.gmd.de 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Apr 4 11:23:55 CEST 2001 hbb@beagle.fokus.gmd.de:/opt/obj/usr/src/sys/BEAGLE i386


	
>Description:
	NG_SEND_MSG_HOOK, as defined in netgraph.h has a 5th parameter
	'retaddr' which specifies the node ID of the node, which should
	receive a response to the message. This parameter is passed
	to ng_address_hook() which, at present, ignores it. This
	leads to the response beeing dropped by the netgraph base code.
>How-To-Repeat:
	Create a netgraph node, which sends a message to another node via
	a hook by using NG_SEND_MSG_HOOK. Observe, that the response from
	the receiving node is lost.
>Fix:
	Patch to ng_base.c:
Index: ng_base.c
===================================================================
RCS file: /usr/ncvs/src/sys/netgraph/ng_base.c,v
retrieving revision 1.54
diff -r1.54 ng_base.c
3490a3491
> 	SET_RETADDR(item, here, retaddr);
>Release-Note:
>Audit-Trail:
>Unformatted:

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200106061201.f56C1Zx67238>