[dpdk-dev] [PATCH] usertools/dpdk-devbind.py: add support for wind river avp device

Zhang, Xiaohua Xiaohua.Zhang at windriver.com
Thu Feb 15 00:17:18 CET 2018


That's no problem for me to move it to the "network" catalog.
Should I generate a new patch?


BR.
Xiaohua Zhang

-----Original Message-----
From: Bruce Richardson [mailto:bruce.richardson at intel.com] 
Sent: Wednesday, February 14, 2018 6:32 PM
To: BURAKOV, ANATOLY
Cc: Zhang, Xiaohua; YIGIT, FERRUH; dev at dpdk.org
Subject: Re: [dpdk-dev] [PATCH] usertools/dpdk-devbind.py: add support for wind river avp device

On Wed, Feb 14, 2018 at 09:57:25AM +0000, Burakov, Anatoly wrote:
> On 14-Feb-18 12:48 AM, Zhang, Xiaohua wrote:
> > Hi Yigit and Anantoly,
> > I checked the nics-17.11.pdf, the following is description:
> > "The Accelerated Virtual Port (AVP) device is a shared memory based 
> > device only available on virtualization platforms from Wind River 
> > Systems. The Wind River Systems virtualization platform currently 
> > uses QEMU/KVM as its hypervisor and as such provides support for all 
> > of the QEMU supported virtual and/or emulated devices (e.g., virtio, 
> > e1000, etc.). The platform offers the virtio device type as the 
> > default device when launching a virtual machine or creating a 
> > virtual machine port. The AVP device is a specialized device available to customers that require increased throughput and decreased latency to meet the demands of their performance focused applications."
> > 
> > I am afraid  just "memory_device" will have some misunderstanding.
> > Could we put it as "avp device (shared memory based)"?
> > 
> > 
> 
> Hi,
> 
> Well, from AVP PMD documentation, it seems that AVP is classified as a NIC.
> Can't we just add it to the list of NICs, even if it's not Ethernet 
> class 0x20xx? Pattern-matching in devbind should work either way. For 
> example, you can see there's "cavium_pkx" already classified as a NIC, 
> even though its class is 08xx, not 02xx. So why not this one?
> 

Definite +1.

It's used for packet IO into a vm, like virtio, and it's driver is in drivers/net.

"If it looks like a NIC, and quacks like a NIC, then it probably is a NIC". [Alternatively if it looks and quacks like a duck, I'm not sure what it's doing in DPDK!]

/Bruce



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