gigabit card in 100mbit mode

m0021 · Posted: Tue Feb 09, 2010 12:40 pm Post subject: gigabit card in 100mbit mode

I have a problem with my samba server. when i copy files from my gentoo samba server over the ethernet, i only get 10-12 megabyte/s.
after a few hours of researches, i found out, that my network card is in 100 mbit mode. (ethtool eth0 says the following:

Supported ports: [ TP ]
Supported link modes:
10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes:
10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pg
Wake-on: d
Current message level: 0x000000ff (255)
Link detected: yes)

i already tried to manualy set the speedmode (ethtool eth0 -s speed 1000 duplex full) but the value of Speed has not been changed. then i tried to set autoneg to off, but it wont work. i also wrote a executable script that sets the speed on boot (/init.d/...), but nothing worked. Im sure to using the right kernel driver for my ethernet card (SkyKonnect Yukon 2 for Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet onboard)...

for setting my network configuration i use the net.eth0 script.

if anybody has an idea how to solve that problem, i would be very happy

Rexilion · Veteran Joined: 17 Mar 2009 Posts: 1044

Well, if it would support it, then 1000 should be chosen automatically otherwise it's a bug. Does the other end support 1000mbit?

m0021 · Posted: Tue Feb 09, 2010 4:24 pm Post subject:

yes, other line ethtool says Speed 1000Mb/s.
on the other clients gigabit ethernet is fully working, only the samba server has this problem

msalerno · Posted: Tue Feb 09, 2010 5:33 pm Post subject:

You could check to see what the options are for the module, it might be better to set speed and duplex while loading the module.

http://en.gentoo-wiki.com/wiki/Sky2

m0021 · Posted: Wed Feb 10, 2010 7:51 am Post subject:

Rexilion · Veteran Joined: 17 Mar 2009 Posts: 1044

m0021 · Posted: Wed Feb 10, 2010 3:10 pm Post subject:

i cant find sky2 under /sys/module/, were else could it be?

lshw says the following:
description: Ethernet interface
product: 88E8053 PCI-E Gigabit Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:05:00.0
logical name: eth0
version: 15
serial: 00:11:d8:98:b5:7c
size: 100MB/s
capacity: 1GB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.23 duplex=full firmware=N/A ip=192.168.1.7 latency=0 link=yes multicast=yes port=twisted pair speed=100MB/s

b0nafide · Apprentice Joined: 17 Feb 2008 Posts: 171 Location: ~/

...on the cable there could be a problem with pins 4,5,7 or 8. 100Mb/s FD does not use these pins, but 1000Mb/s does.

m0021 · Posted: Thu Feb 11, 2010 8:23 am Post subject:

all the cables are ok, i measured them...

with the right parameters, i think i could solve the problem, but i cant find the builtin directory for Sky2