Subject: Re: [RFC net-next 1/4] doc/netlink: Add batch op definitions to netlink-raw schema

From: Jakub Kicinski <[email-masked]>
Date: Tue, 27 Feb 2024 09:13:48 -0800

On Tue, 27 Feb 2024 16:52:40 +0000 Donald Hunter wrote:
> > I'm not familiar with nftables nl. Can you explain what the batch ops
> > are for and how they function?
> >
> > Begin / end makes it sound like some form of a transaction, is it?  
> 
> Yes, it's handled as a transaction, containing multiple messages wrapped
> in BATCH_BEGIN / BATCH_END in a single skb.
> 
> The transaction batching could be implemented without any schema changes
> by just adding multi-message capability to ynl. Then it would be the
> caller's responsibility to specify the right begin / end messages.

That's where I was going with my questions :)
Feels like we need to figure out a nice API at the library level
and/or CLI. That could be more generally useful if anyone wants
to save syscalls.