Problems with Broadcom and Intel PRO/1000 cards

[Alfredo Beaumont Sainz <jtbbesaa@xxxxxxxxxxxxxxxxx>]

Hi,

I've a dual opteron machine with an integrated dual Broadcom 5704 10/100/1000 
(tg3 driver) and an Intel PRO/1000 MT (e1000 driver). It seems that I cannot 
make them work a Gbps. I've a crossover cable connecting a interface of the 
Broadcom (eth1) with the Intel (eth2), but they connect at 100Mbps:

# /sbin/mii-tool -v

eth1: negotiated 100baseTx-FD, link ok
  product info: vendor 00:08:18, model 25 rev 0
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
eth2: negotiated 100baseTx-FD, link ok
  product info: vendor 00:50:43, model 2 rev 5
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

As you can see, there's no 1000 FD advsertising. Forcing it with ethtool makes 
them lose link connection:

# /usr/sbin/ethtool -s eth1 speed 1000 duplex full
# /sbin/mii-tool -v
eth1: no link
  product info: vendor 00:08:18, model 25 rev 0
  basic mode:   autonegotiation enabled
  basic status: no link
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
eth2: no link
  product info: vendor 00:50:43, model 2 rev 5
  basic mode:   autonegotiation enabled
  basic status: no link
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

After some secs link is recovered, at 100 again, and dmesg shows the following 
kernel messages:

tg3: eth1: Link is down.
e1000: eth2: e1000_watchdog: NIC Link is Down
tg3: eth1: Link is up at 1000 Mbps, full duplex.
tg3: eth1: Flow control is off for TX and off for RX.
e1000: eth2: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex

According to the messages links would be at 1000 but they are not really. The 
same happens when forcing eth2.

I'm using kernel version 2.6.11.11 but it also happened with previous version 
of the kernel.

Any hints? Thanks.
-- 
Alfredo Beaumont. GPG: http://aintel.bi.ehu.es/~jtbbesaa/jtbbesaa.gpg.asc
Elektronika eta Telekomunikazioak Saila (Ingeniaritza Telematikoa)
Euskal Herriko Unibertsitatea, Bilbao (Basque Country). http://www.ehu.es

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