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

[王嵘]

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.
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