linux-kernel - Re: [PATCH net-next v5 12/14] tls/sw: Convert tls_sw_sendpage() to use MSG_SPLICE

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]

Message-ID: <20230607102022.42498d4d@kernel.org>
Date:   Wed, 7 Jun 2023 10:20:22 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     David Howells <dhowells@...hat.com>
Cc:     netdev@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        Boris Pismenny <borisp@...dia.com>,
        John Fastabend <john.fastabend@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        David Ahern <dsahern@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH net-next v5 12/14] tls/sw: Convert tls_sw_sendpage() to
 use MSG_SPLICE_PAGES

On Wed,  7 Jun 2023 15:05:57 +0100 David Howells wrote:
> Convert tls_sw_sendpage() and tls_sw_sendpage_locked() to use sendmsg()
> with MSG_SPLICE_PAGES rather than directly splicing in the pages itself.
> 
> [!] Note that tls_sw_sendpage_locked() appears to have the wrong locking
>     upstream.  I think the caller will only hold the socket lock, but it
>     should hold tls_ctx->tx_lock too.
> 
> This allows ->sendpage() to be replaced by something that can handle
> multiple multipage folios in a single transaction.

Reviewed-by: Jakub Kicinski <kuba@...nel.org>