I have duplicated the problem with a stock Redhat 7.3
installation using a Toshiba PCX2200 cable modem connected
to standard PC hardware via USB
> -----Original Message-----
> From: Michael Duane
> Sent: Thursday, September 19, 2002 8:23 AM
> To: Brad Hards; email@example.com
> Subject: RE: CDCether.c
> > -----Original Message-----
> > From: Brad Hards [mailto:firstname.lastname@example.org]
> > Sent: Wednesday, September 18, 2002 11:21 PM
> > To: Michael Duane; email@example.com
> > Subject: Re: CDCether.c
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > On Thu, 19 Sep 2002 09:49, Michael Duane wrote:
> > > Who is the maintainer of CDCEther.c? I am having a problem
> > > with packets getting "wedged" somewhere on the way out
> > > and need to know if others have reported this problem.
> > Others have reported probems that normally look something
> > like "it works fine
> > for some minutes to days, and then all connectivity stops,
> > till I reboot or
> > re-insert the module", but I can't duplicate. Does this match
> > your problem?
> No, this is quite different. It appears to be a function of packet
> size. ping -s <size> <host> will generate packet loss up to 100
> percent with any size of (86+(64*n)). All other values work fine.
> tcpdump on the linux side sees multiple packet retries with
> correct back-off timeing, but the network side never sees the
> packet. Now for the odd part - any network activity on another
> session to the same box will free the "wedged" packet and the
> network will recieve the last packet sent in the linux retry
> I don't know that it is in the CDCEther driver, but here are the
> combinations I have tried:
> linux -> usb -> cdcether -> broadcom modem -> network : FAILS
> linux -> usb -> pegasus -> linksys adaptor -> 3com DOCSIS
> -> network : OKAY
> windows -> usb -> broadcom driver -> broadcom modem ->
> network : OKAY
> > > I'm running the 2.4.17 kernel and using a Broadcom DOCSIS
> > > modem based around a 3345.
> > Most people have reported the problem with Via UHCI chipsets,
> > and usb-uhci
> > driver. Does this match your configuration?
> I'm using usb-uhci with an Intel 810e2. I have tried the 2.4.19
> kernel with the same results. This is a proprietary hardware platform
> and I haven't been able to get the 2.5.36 kernel to boot yet.
> > You might care to upgrade the kernel too.
> > Brad
> > - --
> > http://conf.linux.org.au. 22-25Jan2003. Perth, Australia.
> > Birds in Black.
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This archive was generated by hypermail 2b29 : Mon Sep 23 2002 - 22:00:26 EST