netdev - Re: [PATCH net-next 00/10] mlxsw: Add support for egress and policy-based sampling

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Message-ID: <20210316152119.051d7d46@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Tue, 16 Mar 2021 15:21:19 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Ido Schimmel <idosch@...sch.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, jiri@...dia.com,
        roopa@...dia.com, peter.phaal@...on.com, neil.mckee@...on.com,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: Re: [PATCH net-next 00/10] mlxsw: Add support for egress and
 policy-based sampling

On Tue, 16 Mar 2021 17:02:53 +0200 Ido Schimmel wrote:
> From: Ido Schimmel <idosch@...dia.com>
> 
> So far mlxsw only supported ingress sampling using matchall classifier.
> This series adds support for egress sampling and policy-based sampling
> using flower classifier on Spectrum-2 and newer ASICs. As such, it is
> now possible to issue these commands:
> 
>  # tc filter add dev swp1 egress pref 1 proto all matchall action sample rate 100 group 1
> 
>  # tc filter add dev swp2 ingress pref 1 proto ip flower dst_ip 198.51.100.1 action sample rate 100 group 2
> 
> When performing egress sampling (using either matchall or flower) the
> ASIC is able to report the end-to-end latency which is passed to the
> psample module.

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