From: Bart De Schuymer <bdschuym@pandora.be>
To: Stephen Hemminger <shemminger@osdl.org>,
"David S. Miller" <davem@redhat.com>
Cc: Hannes Schulz <schulz@schwaar.com>,
scott.feldman@intel.com, jgarzik@pobox.com, bridge@osdl.org
Subject: Re: [Bridge] Re: [more info] Re: [2.4.22] bad interaction between e100 and bridge: BUG at dev.c:991!
Date: Tue, 2 Sep 2003 20:23:16 +0200 [thread overview]
Message-ID: <200309022023.16397.bdschuym@pandora.be> (raw)
In-Reply-To: <20030902104545.3c321c24.shemminger@osdl.org>
On Tuesday 02 September 2003 19:45, Stephen Hemminger wrote:
> > Looks like bridging is taking an input packet, transmitting it but not
> > initializing skb->csum, skb->ip_summed, and other fields before doing
> > so.
> >
> > Definitely a bridging bug.
>
> It is actually a bridging-filter bug, since the bridge layer is at level 2
> it doesn't know anything about IP.
A message ([Bridge] Re: [2.4.22] bad interaction between e100 and bridge: BUG
at dev.c:991!) on the bridge list said this:
<quote>
> setup & how to reproduce:
> HP Netserver 2000 with 2 onboard e100 NICs. Both are connected to the same
hub.
> Add both eth0 and eth1 to the same bridge. Pull the plug on eth0.
> Wait till the bridge is about to enter forwarding state on eth1.
>
> I have reproduced this with earlier kernels (2.4.20+) too but they
> were heavily patched. This is a pristine 2.4.22.
>
> Strange but true: This works when using eepro100 insted of e100.
<unquote>
A pristine 2.4.22 doesn't have bridge-netfilter. I don't see how
bridge-netfilter would be involved anyway, altering a packet doesn't
automagically trigger checksum recalculation.
cheers,
Bart
next prev parent reply other threads:[~2003-09-02 18:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <p05111b01bb728bc8972e@[10.96.96.13]>
2003-08-27 20:28 ` [Bridge] Re: [2.4.22] bad interaction between e100 and bridge: BUG at dev.c:991! Stephen Hemminger
2003-08-28 20:24 ` [Bridge] [more info] " Hannes Schulz
2003-08-31 2:01 ` [Bridge] " David S. Miller
2003-09-02 17:45 ` Stephen Hemminger
2003-09-02 18:23 ` Bart De Schuymer [this message]
2003-09-02 18:17 ` David S. Miller
2003-09-05 18:30 ` [Bridge] [PATCH 2.4] bridging and hw checksum fix Stephen Hemminger
2003-09-03 14:56 ` [Bridge] Re: [2.4.22] bad interaction between e100 and bridge: BUG at dev.c:991! Hannes Schulz
2003-09-03 15:38 ` Stephen Hemminger
2003-09-03 16:49 ` Bart De Schuymer
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