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Subject: Re: [virtio] RE: [PATCH requirements 5/7] net-features: Add n-tuple receive flow filters requirements

å 2023/8/4 äå3:30, Parav Pandit åé:
From: Heng Qi <hengqi@linux.alibaba.com>
Sent: Friday, August 4, 2023 12:47 PM
Yes, but a small update:
If flowvq is created, RFF must be done only on flowvq by the driver.
If flowvq is supported, but not created, cvq can be used.
If flowvq is not supported, cvq is used.

Looks fine, I want to think little more on the last point to make sure we are not missing something.
Will respond by Monday on it.



Oh, I got it, I think we should let people see more details in the next version.:)

For any new/undefined protocol, if user wants to say, In a packet at
byte offset A, if you find pattern == 0x800, drop the packet.
In a packet at byte offset B, if you find pattern == 0x8100, forward to rq 10.

I didn't consider multiple matching patterns for now, though it is very useful.
I am inclined to keep the option of _any_match to take up later, for now to do
only well defined match?
I think it's ok, but we don't seem to need the length here. But in any case, I
don't think it's that important to have or not ^^

Length will be needed to indicate how many bytes to match to.
Lets do this rule incrementally after we get the base line done for known RFC defined fields.

Lets keep rss context in future work as its orthogonal to it.
Yes, your help for rss context will be good.
Lets first finish RFF as its bit in the advance stage.
Yes! But I worry that a spec that references a concept that doesn't exist in the
existing spec may be blocked, so if you have no objections, I will push this work
forward in the near future to help RFF possible blocking.
I was probably not clear enough, I propose that lets remove the RSS context for now in the RFF.
Once RSS context is done, at that point in future to enhance RFF.

I need some time to see if the rss context has an effect on our scenario, so please hold it for now. I'll sync it up as soon as possible.


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