netdev - Re: [PATCH net-next 0/7] ynl: add ignore-index flag for indexed-array

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20251022184517.55b95744@kernel.org>
Date: Wed, 22 Oct 2025 18:45:17 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Asbjørn Sloth Tønnesen
 <ast@...erby.net>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Chia-Yu Chang
 <chia-yu.chang@...ia-bell-labs.com>, Chuck Lever <chuck.lever@...cle.com>,
 Donald Hunter <donald.hunter@...il.com>, Jonathan Corbet <corbet@....net>,
 "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, Simon Horman
 <horms@...nel.org>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 0/7] ynl: add ignore-index flag for
 indexed-array

On Wed, 22 Oct 2025 18:26:53 +0000 Asbjørn Sloth Tønnesen wrote:
> This patchset adds a way to mark if an indedex array is just an
> array, and the index is uninteresting, as previously discussed[1].
> 
> Which is the case in most of the indexed-arrays in the current specs.
> 
> As the name indexed-array kinda implies that the index is interesting,
> then I am using `ignore-index` to mark if the index is unused.
> 
> This adds some noise to YNL, and as it's only few indexed-arrays which
> actually use the index, then if we can come up with some good naming,
> it may be better to reverse it so it's the default behaviour.

C code already does this, right? We just collect the attributes
completely ignoring the index. So why do we need to extend the
spec.

Have you found any case where the index matters and can be
non-contiguous (other than the known TC kerfuffle).

FWIW another concept is what TypeValue does.
"Inject" the index into the child nest as an extra member.
Most flexible but also prolly a PITA for user space to init those
for requests.