Subject: Re: Networking strangeness Solution?
From: Brian Foddy (bkfoddy@soc.nwa.com)
Date: Tue May 09 2000 - 10:33:42 MDT
Charles,
It sounds like you are making much better progress on this issue
than we've seen for a while. I've been seeing this problem
since December at least.
I do have a couple questions on your solution.
1. You mention it messes up NFS. Is that NFS on the
Linux side, or the MOL side? Care to elaborate on
what the side effect to NFS is on your solution?
2. We also see a similar problem on the Appletalk side of the fence.
I believe the error message on this one is something like
"Warning Ethernet packet dropped" (from memory, not an exact
cut-n-paste).
From what you've seen, anything related to this?
Thanks,
Brian
Charles McLachlan wrote:
>
> My networking woes seem to stem from MOL trying to deal with all packets that
> are received by the machine, which is all well and good if it was acting as a
> router or something, but somewhat of an overkill when acting as a normal
> machine.
>
> To slacken off the demands on MOL (i.e. the osi_enet driver) I've hacked
> sheep_net so that you can specicify a filter ip address. sheep_net will only
> pass ip packets with a destination address that matches the filter. All other
> non ip packets are passed though normally.
>
> This works fine and I can do use MOL networking and a remote viewer at the same
> time, but it does have some caveats:
>
> You need to load the hacked sheep_net before you startmol.
> You need to specifiy the filter as a kernel recognisable integer (no dotted
> addresses).
> You need to know what ip address your pseudo Mac will be using (tricky if
> you're using DHCP)
> It seems to screw up nfs.
>
> Usage:
> cd mol-0.9.41
> patch -p1 <path/to/sheep.c.patch
> make
> insmod lib/modules/sheep_net.o ipfilter=0xDEADBEEF
> ./startmol
>
> Patch file follows (1550 bytes)
>
> I realise this isn't the most elegant solution in the world. But it works for
> me.
>
> --
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Charlie McLachlan
> AT&T Research Lab. Cambridge.
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> ------------------------------------------------------------------------
> Name: sheep.c.patch
> sheep.c.patch Type: text/x-c++
> Encoding: quoted-printable
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