netdev - Re: tc offload debug-ability

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: <092765ac-ffc6-5ccb-2dff-46370edb2e44@mojatatu.com>
Date:   Tue, 3 Aug 2021 08:50:27 -0400
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Vlad Buslov <vladbu@...dia.com>
Cc:     Simon Horman <simon.horman@...igine.com>,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...lanox.com>, netdev@...r.kernel.org,
        oss-drivers@...igine.com, Baowen Zheng <baowen.zheng@...igine.com>,
        Louis Peens <louis.peens@...igine.com>,
        Ido Schimmel <idosch@...dia.com>,
        Jiri Pirko <jiri@...nulli.us>, Roopa Prabhu <roopa@...dia.com>
Subject: Re: tc offload debug-ability

On 2021-08-03 8:14 a.m., Vlad Buslov wrote:
> 
> On Tue 03 Aug 2021 at 15:02, Jamal Hadi Salim <jhs@...atatu.com> wrote:

[..]

>>
>> So unless i am mistaken Vlad:
>> a) there is no way to reflect the  details when someone dumps the rules.
>> b) No notifications sent to the control plane (user space) when the
>> neighbor updates are offloaded.
> 
> Correct.
>

Feels like we can adopt the same mechanics. Although, unless i am
misreading, it seems Ido's patches cover a slightly different use
case: not totally synchronous in successfully pushing the rule to
hardware i.e could be sitting somewhere in firmware on its way to
the ASIC (and at least your connectx driver seems to only be
relinquishing control after confirming the update succeeded).
Am i mistaken Ido?


cheers,
jamal