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Date: Tue, 30 Jan 2001 00:58:26 -0800
From: Julian Elischer <julian@elischer.org>
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To: Harti Brandt <brandt@fokus.gmd.de>, julian@freebsd.org,
	freebsd-net@freebsd.org, archie@freebsd.org
Subject: Re: netgraph: problem in ng_base
References: <Pine.BSF.4.21.0101291728520.460-100000@beagle.fokus.gmd.de> <3A767279.977B96CA@elischer.org>
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Julian Elischer wrote:
> 
> Firstly, thanks for the report.
> And thanks for spending the time to look into it.
>[...]
> > it seems like there is a problem with node reference counts. I have a
> > test program, that instantiates a chain of nodes like this:
> >
> > ng_atm -----------> ng_sscop --------------> ng_sscf ---------> ng_socket
> >                          |                                      ^
> >                          +--------------------------------------+
[...]
> can you send me a copy of your ng_sccop node so I can try simulate this?
> in the meanwhile I'll try using the 'hole' node to simulate it.
> 

using ngctl and 'hole' nodes in this configuration I cannot make this happen.

here's the sequence I used:
+ mkpeer hole aaa aaa
+ name aaa near
+ mkpeer hole bbb bbb
+ name bbb far
+ connect near: far: ccc ccc
+ connect lnc0: far: orphans ddd
+ list
There are 4 total nodes:
  Name: far             Type: hole            ID: 00000008   Num hooks: 3
  Name: near            Type: hole            ID: 00000007   Num hooks: 2
  Name: ngctl192        Type: socket          ID: 00000006   Num hooks: 2
  Name: lnc0            Type: ether           ID: 00000005   Num hooks: 1
+ show far:
  Name: far             Type: hole            ID: 00000008   Num hooks: 3
  Local hook      Peer name       Peer type    Peer ID         Peer hook
  ----------      ---------       ---------    -------         ---------
  ddd             lnc0            ether        00000005        orphans
  ccc             near            hole         00000007        ccc
  bbb             ngctl192        socket       00000006        bbb
+ shutdown near:
+ shutdown far:
+ list
There are 2 total nodes:
  Name: lnc0            Type: ether           ID: 00000009   Num hooks: 0
  Name: ngctl192        Type: socket          ID: 00000006   Num hooks: 0
+

no messages were printed on the console...

can you repeat this sequence using your nodes and see if you get an error when
it is done by hand (slowely?).

I'll try it again from a script using ngctl -f
[later]
no, it still doesn't complain..
can you try this: ( I assume atm is permanent like lnc0:   )

cat > tmp/it <<DONE
mkpeer hole aaa aaa
name aaa near
mkpeer hole bbb bbb
name bbb far
connect near: far: ccc ccc
connect lnc0: far: orphans ddd
list
show far:
shutdown near:
shutdown far:
list
DONE
ngctl -f /tmp/it





 
      __--_|\  Julian Elischer
     /       \ julian@elischer.org
    (   OZ    ) World tour 2000-2001
---> X_.---._/  
            v


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