Hello friends

Is there any reliable way to map PCI slot to device names in Linux - that is given ethN I am trying to map it to phisical location in the server - its been a long standing problem for me ..... especially if the server has different varieties of chipsets installed (broadcom,intel,etc) --
i am looking for this to actually make sure the drivers are attaching
corrrectly .......

For example to do this in solaris -

I would do a 'grep bgeNN /etc/path_to_inst'

#for the bge chipset and lookup the hardware adress in sun site..........to identify the slot #

Hope to find reply

What could be the need for doing such a thing?

PCI has been a plug and play bus for years now. And newer versions viz
PCI-e and PCI-X are going to be even more easy.

Why do you want to manually figure out the PCI slot?

All that a driver needs in the PCI world are three things.

a) PCI device number
b) PCI function number
c) PCI bus number (Usually this is just 0)

Anyway to answer your question

#lspci -v -v |grep Ethernet

should get you what you want.

good luck

__________________
J Suresh Kumar
Google Hacks

right - i am looking to find a way how the device names are assigned - and
in what particular order the onbaord , pci nics are scanned in linux ....if
i have no physical access to the server and if someone tells me PCI slot 4
(labeled on the server) is connected to switch A....
how can i figure out which ethN it is .....

to clarify my woes a bit further -
if i add a new pci device (lets assume a
SCSI controller or even another NIC) ..the device names get reordered and/or
renamed - so one has to redo the
ifcfg-ethNN files
..check if the drivers are attaching to the right NICs ...
reconfigure modules.conf/modprobe.conf(distro specific).......

doing a search on the web , few folks have suggested to have a
udev rule(kernel version >=2.6.*) to bind mac adresss or device adresss to the
device logical name --
hmm - there must be a simpler way to do this - especially in 2.4 kernels .............

Use nameif command to name network interfaces based on MAC addresses.

Thanks

Long time back (2.4.x), in /etc/modules.conf one could force it like so
alias <driver1> eth0
alias <driver2> eth1

IIRC, some drivers took interrupt no. as an option to separate the NICs
that used the same driver.

I have not done this on the 2.6.y kernel.

__________________
Shaalini.S
Be the Best of Whatever you are...

if both are identical card, then 'nameif' help us to set the order
based on the mac addr.

the issue i see with using nameif is..
if you replace the card.....u need to remember to do this again ....
but a useful solution ..

Thanks

That is the right way for 2.6 kernels. What is not simple in it? Add
to udev rules (for example):

# PCI device 0x1317:0x0985 (tulip)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:50:bf:99:ce:9e",
NAME="eth1"

For 2.4, you can use hotplug scripts:
Linux Hotplugging

Thank you

__________________
A.Rajesh Khanna