netdev - Re: [PATCH 0/9 v1 RFC] Generic zcopy

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Fri, 18 Dec 2020 15:49:44 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Jonathan Lemon <jonathan.lemon@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH 0/9 v1 RFC] Generic zcopy_* functions

On Fri, Dec 18, 2020 at 3:23 PM Jonathan Lemon <jonathan.lemon@...il.com> wrote:
>
> From: Jonathan Lemon <bsd@...com>
>
> This is set of cleanup patches for zerocopy which are intended
> to allow a introduction of a different zerocopy implementation.

Can you describe in more detail what exactly is lacking in the current
zerocopy interface for this this different implementation? Or point to
a github tree with the feature patches attached, perhaps.

I think it's good to split into multiple smaller patchsets, starting
with core stack support. But find it hard to understand which of these
changes are truly needed to support a new use case.

If anything, eating up the last 8 bits in skb_shared_info should be last resort.

I'll take a look at the individual patches in more detail later.