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From: Jakub Kicinski <kuba@kernel.org>
To: Gal Pressman <gal@nvidia.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com,
	pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org,
	donald.hunter@gmail.com, shuah@kernel.org,
	kory.maincent@bootlin.com, maxime.chevallier@bootlin.com,
	sdf@fomichev.me, ecree.xilinx@gmail.com
Subject: Re: [PATCH net-next v2 08/11] netlink: specs: define input-xfrm enum in the spec
Date: Tue, 15 Jul 2025 07:45:34 -0700	[thread overview]
Message-ID: <20250715074534.30783870@kernel.org> (raw)
In-Reply-To: <7fe0c573-4a4d-4cff-a1c2-9d4638eea3e1@nvidia.com>

On Tue, 15 Jul 2025 11:35:08 +0300 Gal Pressman wrote:
> We kinda use input_xfrm as an enum, but in theory it's a bitmask, so
> while this is OK today, I'm not sure this patch is future-proof.

Yeah, a little unclear at this stage if it's a bitmask or an enum since
we only have values 0 1 2 defined, and the defined values cannot be
composed. Adding an entry that'd compose would be painful if we go with
the string. OTOH I can't think of any composable transform and it's
extra effort to extract the entry form a one-element set each time.

I guess we should go with future-proofness when in doubt. 
I'll make it into flags in v3.

  reply	other threads:[~2025-07-15 14:45 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-14 22:27 [PATCH net-next v2 00/11] ethtool: rss: support RSS_SET via Netlink Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 01/11] ethtool: rss: initial RSS_SET (indirection table handling) Jakub Kicinski
2025-07-15  7:20   ` Gal Pressman
2025-07-15 14:39     ` Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 02/11] selftests: drv-net: rss_api: factor out checking min queue count Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 03/11] tools: ynl: support packing binary arrays of scalars Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 04/11] selftests: drv-net: rss_api: test setting indirection table via Netlink Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 05/11] ethtool: rss: support setting hfunc " Jakub Kicinski
2025-07-15  7:24   ` Gal Pressman
2025-07-14 22:27 ` [PATCH net-next v2 06/11] ethtool: rss: support setting hkey " Jakub Kicinski
2025-07-15  7:30   ` Gal Pressman
2025-07-14 22:27 ` [PATCH net-next v2 07/11] selftests: drv-net: rss_api: test setting hashing key " Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 08/11] netlink: specs: define input-xfrm enum in the spec Jakub Kicinski
2025-07-15  8:35   ` Gal Pressman
2025-07-15 14:45     ` Jakub Kicinski [this message]
2025-07-14 22:27 ` [PATCH net-next v2 09/11] ethtool: rss: support setting input-xfrm via Netlink Jakub Kicinski
2025-07-15  8:40   ` Gal Pressman
2025-07-14 22:27 ` [PATCH net-next v2 10/11] ethtool: rss: support setting flow hashing fields Jakub Kicinski
2025-07-14 22:27 ` [PATCH net-next v2 11/11] selftests: drv-net: rss_api: test input-xfrm and hash fields Jakub Kicinski

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