Re: ale driver on asus eeepc 901 could not disable Tx/Rx under traffic flow

Hello Maillist,

ifconfig ale0:
ale0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=319b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MCAST,WOL_MAGIC>
ether 00:22:15:92:4f:a0
inet 172.32.1.51 netmask 0xffff0000 broadcast 172.32.255.255
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active

I see, the problem is floating and in my case depend from type of remote port
on ethernet cable.

For example when connect my book (with ale0) to 1Gbit/s pc port (with FreeBSD-
Current and Marvell card (msk driver)) i get
ale0: could not disable Tx/Rx MAC(0x00000008)!
ale0: DMA read error! -- resetting
and flapping interface forever when traffic flow.

when i connection ale0 to 100Mbit/s switch port or to 100Mbit/s PC (with
Windows OS) through cross-over cable, ale0 work perfect without any warning.

Currenlty i reproduce problem only with PC:msk<->PC:ale link.

I try to collect more information for other situation.

PS: PC with FreeBSD/msk driver working with other (!= ale0) link (to switch
or to PC) is fine.


Hello Maillist,

Im using FreeBSD-CURRENT (from 01122008 snap from cvs) and got looped
notice
in dmesg buffer when LAN Ethernet generate some traffic:
..
ale0: could not disable Tx/Rx MAC(0x00000008)!
ale0: DMA read error! -- resetting
..
ale0: could not disable Tx/Rx MAC(0x00000008)!
..
with flapping interface (link going to down and back up).


Hmm, there was similiar report but I couldn't reproduce this on
my box. In fact I'm out of idea why it happens. Since I have no
access to datasheet I'm not sure what can be done at the moment.
Even a developer in Atheros answered that changing mainboard would
be the first step to diagnose the issue. :-(

ifconfig ale0 -txcsum -rxcsum -tso and forcing link for media 10BaseT/UTP
is
in vain.


There are a couple of magic values related with PHY in Linux driver
which I didn't want to include as I don't understand what it does.
Do you use 10baseT media? Would you show me the output of
"ifconfig ale0"?

Under small traffic flow ale0 work is fine without errors. Somebody meet
with
like similar prombel on Asus eee pc 901 ? Thanks


Anyway, I'll let you know if I mange to find a clue to the issue.
--
Regards,
Pyun YongHyeon

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