From: Stephen Hemminger <shemminger@osdl.org>
To: "David S. Miller" <davem@redhat.com>
Cc: Hannes Schulz <schulz@schwaar.com>,
scott.feldman@intel.com, jgarzik@pobox.com, bridge@osdl.org
Subject: [Bridge] Re: [more info] Re: [2.4.22] bad interaction between e100 and bridge: BUG at dev.c:991!
Date: Tue, 2 Sep 2003 10:45:45 -0700 [thread overview]
Message-ID: <20030902104545.3c321c24.shemminger@osdl.org> (raw)
In-Reply-To: <20030830190100.4eac4504.davem@redhat.com>
On Sat, 30 Aug 2003 19:01:00 -0700
"David S. Miller" <davem@redhat.com> wrote:
> On Thu, 28 Aug 2003 22:24:52 +0200
> Hannes Schulz <schulz@schwaar.com> wrote:
>
> > >Could the problem be that the e100 can do IP receive checksumming on
> > >the board,
> > >but the eepro driver doesn't enable it. When the board is doing checksum
> > >offload, then the csum field isn't set.
> > >
> > >Please try disabling receive checksumming on the e100 driver
> > >
> > > modprobe e100 XsumRX=0
> > >
> > >If this is the problem, it exists both 2.4 and 2.6.
> >
> > Indeed: with XsumRX=0,0 the BUG doesn't happen. I put some debugging
> > code in dev.c:
>
> 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.
next prev parent reply other threads:[~2003-09-02 17:45 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 [this message]
2003-09-02 18:23 ` Bart De Schuymer
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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