dpdk - 在使用 DPDK 应用程序时，rte_eth_dev_count 总是返回 0

Question

我已按如下方式配置 NIC 卡:-

[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>

当我运行 ethtool 示例应用程序时，它给出了 0 NIC 端口错误，如下所示:-

[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!

如果端口配置错误或其他原因，有人可以帮我配置端口吗。

Answer 1

出现上述错误是因为不支持以下驱动程序:- 0000:81:00.0 'NetXtreme BCM5722 千兆以太网 PCI Express' drv=igb_uio 未使用=tg3

因此将 DPDK 与支持的驱动程序绑定(bind)解决了这个问题。