netdev - Re: [RFC PATCH net-next 00/19] bridge: mcast: Extensions for EVPN

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Message-ID: <Y1fAEDkgAG3ttvOQ@shredder>
Date:   Tue, 25 Oct 2022 13:53:04 +0300
From:   Ido Schimmel <idosch@...dia.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
        davem@...emloft.net, pabeni@...hat.com, edumazet@...gle.com,
        roopa@...dia.com, razor@...ckwall.org, mlxsw@...dia.com
Subject: Re: [RFC PATCH net-next 00/19] bridge: mcast: Extensions for EVPN

On Tue, Oct 18, 2022 at 12:21:12PM -0700, Jakub Kicinski wrote:
> On Tue, 18 Oct 2022 15:04:01 +0300 Ido Schimmel wrote:
> > 	[ MDBE_ATTR_SRC_LIST ]		// new
> > 		[ MDBE_SRC_LIST_ENTRY ]
> > 			[ MDBE_SRCATTR_ADDRESS ]
> > 				struct in_addr / struct in6_addr
> > 		[ ...]
> 
> nit: I found that the MDBE_ATTR_SRC_LIST level of wrapping corresponds
> to how "sane" formats work, but in practice there is no need for it in
> netlink. You can put the entry nests directly in the outer. Saves one
> layer of parsing. Just thought I'd mention it, you can keep as is if
> you prefer.

I guess you mean:

[ MDBA_SET_ENTRY_ATTRS ]
	[ MDBE_SRC_LIST_ENTRY ]
		[ MDBE_SRCATTR_ADDRESS ]
			struct in_addr / struct in6_addr
	[ MDBE_SRC_LIST_ENTRY ]
	[ ... ]

It is a good suggestion, but I wanted to make the request format similar
to the existing response / notification format that already has this
level of wrapping. See example in the commit message of patch #17:

https://lore.kernel.org/netdev/20221018120420.561846-18-idosch@nvidia.com/