linux-kernel - Re: [PATCH v4 3/5] net/tcp: Disable TCP-MD5 static key on tcp_md5sig

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Message-ID: <5c899a02-cec1-07c9-1c1a-8747773ece0c@arista.com>
Date:   Mon, 21 Nov 2022 20:56:18 +0000
From:   Dmitry Safonov <dima@...sta.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Bob Gilligan <gilligan@...sta.com>,
        "David S. Miller" <davem@...emloft.net>,
        Dmitry Safonov <0x7f454c46@...il.com>,
        Francesco Ruggeri <fruggeri@...sta.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Jason Baron <jbaron@...mai.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Salam Noureddine <noureddine@...sta.com>,
        Steven Rostedt <rostedt@...dmis.org>, netdev@...r.kernel.org
Subject: Re: [PATCH v4 3/5] net/tcp: Disable TCP-MD5 static key on
 tcp_md5sig_info destruction

On 11/21/22 20:41, Jakub Kicinski wrote:
> On Mon, 21 Nov 2022 20:31:38 +0000 Dmitry Safonov wrote:
>>> Maybe it wouldn't be 
>>> the worst move to provide a sk_rcu_dereference() or rcu_dereference_sk()
>>> or some such wrapper.
>>>
>>> More importantly tho - was the merging part for this patches discussed?
>>> They don't apply to net-next.  
>>
>> They apply over linux-next as there's a change [1] in
>> linux-tip/locking/core on which the patches set based.
>>
>> Could the way forward be through linux-tip tree, or that might create
>> net conflicts?
> 
> Dunno from memory, too much happens in these files :S
> 
> Could you cherry-pick [1] onto net-next and see if 
> 
>   git am --no-3way patches/*
> 
> goes thru cleanly? If so no objections for the patches to go via tip,
> we're close enough to the merge window.

That did go cleanly for me on today's net-next/main.

>> I'll send v5 with the trivial change to rcu_dereference_protected()
>> mentioned above.

Thanks,
          Dmitry