问题
I have configured NIC cards as below:-
[root@localhost ethtool]# ../../tools/dpdk-devbind.py -s
Network devices using DPDK-compatible driver
============================================
0000:81:00.0 'NetXtreme BCM5722 Gigabit Ethernet PCI Express' drv=igb_uio unused=tg3
Network devices using kernel driver
===================================
0000:02:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection' if=ens513f0 drv=ixgbe unused=igb_uio
0000:02:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection' if=ens513f1 drv=ixgbe unused=igb_uio
0000:04:00.0 'I350 Gigabit Network Connection' if=enp4s0f0 drv=igb unused=igb_uio
0000:04:00.3 'I350 Gigabit Network Connection' if=enp4s0f3 drv=igb unused=igb_uio
Other network devices
=====================
<none>
Crypto devices using DPDK-compatible driver
===========================================
<none>
Crypto devices using kernel driver
==================================
0000:84:00.0 'DH895XCC Series QAT' drv=dh895xcc unused=qat_dh895xcc,igb_uio
Other crypto devices
====================
<none>
When i run ethtool sample application it is giving error as 0 NIC ports as shown below:-
[root@localhost ethtool]# ./ethtool-app/ethtool-app/x86_64-native- EAL: Detected 47 lcore(s)
EAL: Probing VFIO support...
EAL: PCI device 0000:02:00.0 on NUMA socket 0
EAL: probe driver: 8086:10fb net_ixgbe
EAL: PCI device 0000:02:00.1 on NUMA socket 0
EAL: probe driver: 8086:10fb net_ixgbe
EAL: PCI device 0000:04:00.0 on NUMA socket 0
EAL: probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:04:00.3 on NUMA socket 0
EAL: probe driver: 8086:1521 net_e1000_igb
Number of NICs: 0
EAL: Error - exiting with code: 1
Cause: No available NIC ports!
Can someone help me in configuring ports if port configuration is wrong or something else.
回答1:
The above error was coming because the below driver are not supported:- 0000:81:00.0 'NetXtreme BCM5722 Gigabit Ethernet PCI Express' drv=igb_uio unused=tg3
So Binding DPDK with supported driver solved the problem.
回答2:
The dpdk-devbind.py tool might be a bit misleading here. Not all of the devices using DPDK-compatible driver is in fact supported by DPDK.
Here is the list of supported Broadcom NICs in DPDK:
http://dpdk.org/doc/guides/nics/bnxt.html
Looks like the BCM5722 is not there.
On the other hand, it looks like you have four other NICs, which are supported by the DPDK:
EAL: PCI device 0000:02:00.0 on NUMA socket 0
EAL: probe driver: 8086:10fb net_ixgbe
EAL: PCI device 0000:02:00.1 on NUMA socket 0
EAL: probe driver: 8086:10fb net_ixgbe
EAL: PCI device 0000:04:00.0 on NUMA socket 0
EAL: probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:04:00.3 on NUMA socket 0
EAL: probe driver: 8086:1521 net_e1000_igb
So you need to bind one of those to igb_uio and try to run the example again.
来源：https://stackoverflow.com/questions/42106676/while-using-dpdk-application-rte-eth-dev-count-is-returning-0-always