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[Xen-users] Dedicated nic in domU does not start / Failed to setup GSI



Hi all!

I wanted to setup a dedicated nic for mi xen guest, but I can't get it working.

I think this could be a interrupt problem, but I failed to find more info on the web.


In my domU, a lspci gets:

00:00.0 Ethernet controller: Davicom Semiconductor, Inc. 21x4x DEC-Tulip compatible 10/100 Ethernet (rev 31)


The driver seems to be correctly loaded in domU:

root@play1:~# ls -l /sys/bus/pci/devices/0000\:00\:00.0/driver

lrwxrwxrwx 1 root root 0 Jan 19 21:39 /sys/bus/pci/devices/0000:00:00.0/driver -> ../../../../bus/pci/drivers/dmfe


But the card does not work, these errors pop up:


[ 9.160685] ADDRCONF(NETDEV_UP): eth0: link is not ready

Listening on LPF/eth0/00:80:ad:04:39:15

Sending on LPF/eth0/00:80:ad:04:39:15

Sending on Socket/fallback

DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5

DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12

[ 15.157461] eth0: Tx timeout - resetting

[ 19.157523] eth0: Tx timeout - resetting

[ 23.157586] eth0: Tx timeout - resetting

DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9

[ 27.157642] eth0: Tx timeout – resetting

...


When using a static address, I can ping this address in domU – so the card seems to work – i just can't get connection. When using this card in dom0, everything works fine.

I've tried three different nics from 3 different vendors, but I can't get it working. The error messages are slightly different, but more or less the same ones.

I think i could have something to do with these error messages during boot up of domU (interrupt problem)...


debian:~# dmesg | grep GSI | sort -u

[ 0.054373] Failed to setup GSI :13, err_code:-22

[ 0.055237] Failed to setup GSI :8, err_code:-22

[ 0.056037] Failed to setup GSI :12, err_code:-22

[ 0.056549] Failed to setup GSI :1, err_code:-22

[ 0.057095] Failed to setup GSI :4, err_code:-22

[ 0.057095] Failed to setup GSI :7, err_code:-22

[ 0.064486] Failed to setup GSI :3, err_code:-22

[ 0.066792] Failed to setup GSI :6, err_code:-22

[ 0.067075] Failed to setup GSI :5, err_code:-22

[ 0.967075] Failed to setup GSI :11, err_code:-22

[ 0.967075] pciback 0000:00:0e.0: PCI INT A -> Link[LNKB] -> GSI 11 (level, low) -> IRQ 11

[ 150.175525] Failed to setup GSI :11, err_code:-22


Thanks for your help!

Josef


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