林子篆

Posted on Oct 20, 2019 • Originally published at dannypsnl.github.io on Oct 19, 2019

DPDK usertools: devbind

#dpdk #networking #workrecord

After compiling DPDK, load module and start our process. A common problem is we have no idea where is the NIC going :).

And DPDK actually provides some tools for these operations, one of them is dpdk-devbind.py. It located at $(DPDK_PROJECT)/usertools/dpdk-devbind.py

We can use it to get current status:

$ dpdk-devbind.py --status
# shorthand
$ dpdk-devbind.py -s

Bind driver:

$ dpdk-devbind.py --bind e1000e 00:06.0
# shorthand
$ dpdk-devbind.py -b e1000e 00:06.0
# we also can use NIC name, but remember that a NIC could have no name
# only PCI would always existed.
$ dpdk-devbind.py -b igb_uio eth1

Unbind driver:

$ dpdk-devbind.py --unbind 00:06.0
# shorthand
$ dpdk-devbind.py -u 00:06.0
# equal to
$ dpdk-devbind.py --bind none 00:06.0

p.s. Remember that these operations requiring permission(sudo or what).

Just that, have fun!

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