[ovs-discuss] ovs-2.8 Cannot open /dev/uio0

Wed Nov 15 12:40:05 UTC 2017

hi, I solved the NIC bind problem.
I checked the log found that
 netdev_dpdk|ERR|Interface dpdk-eth2(rxq:1 txq:3) configure error: Invalid argument
so, I changed the rxq of the NIC to 3 by "options:n_rxq=3", and it works. ^^

I tested the ovs2.8-dpdk in another VM of Centos7, but the "Permission denied" problem still exists.
Here is the results of the commands you asked to execute,

[root at localhost ~]# lshw -c network -businfo
Bus info          Device      Class          Description
========================================================
pci at 0000:00:03.0              network        Virtio network device
virtio at 0          eth0        network        Ethernet interface
pci at 0000:00:09.0              network        82540EM Gigabit Ethernet Controller
pci at 0000:00:0a.0  ens10       network        82540EM Gigabit Ethernet Controller
                  br0         network        Ethernet interface
                  ovs-netdev  network        Ethernet interface
                  virbr0-nic  network        Ethernet interface
                  virbr0      network        Ethernet interface
[root at localhost ~]# lspci | egrep -i --color 'network|ethernet'
00:03.0 Ethernet controller: Red Hat, Inc Virtio network device
00:09.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 03)
00:0a.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 03)
[root at localhost ~]# lsmod | grep uio
igb_uio                13224  1
uio                    19259  3 igb_uio

在 2017-11-15 04:29:34，"Shivaram Mysore" <shivaram.mysore at gmail.com> 写道：

What is the output of the following commands:

lshw -c network -businfo

lspci | egrep -i --color 'network|ethernet'

lsmod | grep uio

/sbin/dpdk-devbind --status

On Mon, Nov 13, 2017 at 9:29 PM, 王嵘 <rong.wang at easystack.cn> wrote:

I just want to use ovs-2.8 for userspace connection-track, and I choose the  latest LST DPDK 1705.
But, you mean theres is something like broadcom-uio.ko when using broadcom NIC? 
I just have changed the  config/common_base:

CONFIG_RTE_LIBRTE_BNX2X_PMD=y
CONFIG_RTE_LIBRTE_BNX2X_DEBUG=y
CONFIG_RTE_LIBRTE_BNX2X_DEBUG_INIT=y
CONFIG_RTE_LIBRTE_BNX2X_DEBUG_RX=y
CONFIG_RTE_LIBRTE_BNX2X_DEBUG_TX=y
CONFIG_RTE_LIBRTE_BNX2X_MF_SUPPORT=y
CONFIG_RTE_LIBRTE_BNX2X_DEBUG_PERIODIC=y

在 2017-11-14 12:49:44，"Shivaram Mysore" <shivaram.mysore at gmail.com> 写道：

Is there a specific reason as to why you would want to use this version of DPDK?  I have never had to check permission.

Also, igb is mainly for Intel NICs.  You are using a Broadcom NIC - http://dpdk.org/doc/guides/nics/bnxt.html for driver info.  I think what you have is a misconfiguration.

You may want to check out the scripts here https://github.com/shivarammysore/faucetsdn-intel/tree/master/src/ubuntu/zesty/ovs_281 - to setup and configure DPDK.  I have only used Intel NICs.

Cheers!

On Mon, Nov 13, 2017 at 6:50 PM, 王嵘 <rong.wang at easystack.cn> wrote:

hi, I'm using ovs2.8 with dpdk-17052, and the 'NetXtreme II BCM57810 10 Gigabit Ethernet 168e'.
There comes the error, while I try to bind the NIC using igb_uio.

2017-11-14T02:25:18.400Z|00362|dpdk|INFO|EAL:   probe driver: 14e4:168e net_bnx2x
2017-11-14T02:25:18.400Z|00363|dpdk|ERR|EAL: Cannot open /dev/uio0: Permission denied

Then I chmod the file, like "chmod 777 /dev/uio0",(but I dont think this is right way.)
but there comes other files with the same error, and I also chmod them.
And I do the actions:
chmod 777 /sys/bus/pci/devices/0000:20:00.1/*
chmod 777 /sys/class/uio/uio0/device/config

Then , restart the ovs-dpdk,
But, there comes the following error:
2017-11-14T02:40:05.436Z|8384580|dpdk|ERR|PMD: pci_read(): Can't read from PCI config space
2017-11-14T02:40:05.436Z|8384581|dpdk|ERR|PMD: pci_read(): Can't read from PCI config space
2017-11-14T02:40:05.436Z|8384582|dpdk|ERR|PMD: pci_read(): Can't read from PCI config space
2017-11-14T02:40:05.436Z|8384583|dpdk|ERR|PMD: pci_read(): Can't read from PCI config space
2017-11-14T02:40:05.436Z|8384584|dpdk|INFO|PMD: bnx2x_pci_get_caps(): Failed to allocate memory
2017-11-14T02:40:05.436Z|8384585|dpdk|INFO|PMD: bnx2x_attach(): PCIe caps reading was failed
2017-11-14T02:40:05.436Z|8384586|dpdk|ERR|PMD: bnx2x_common_dev_init(): bnx2x_attach failed (-12)
2017-11-14T02:40:05.436Z|8384587|dpdk|ERR|EAL: Requested device 0000:20:00.1 cannot be used

So, why there comes the Permission prolem? And what should I do for the PCIe error? Or it is the NIC drivers' problem?
Thanks a lot.

_______________________________________________
discuss mailing list
discuss at openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20171115/a288b4af/attachment.html>