netdev - Re: [PATCH net-next 4/9] net/sched: introduce flow

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Date:   Fri, 3 Feb 2023 15:38:30 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     Oz Shlomo <ozsh@...dia.com>
Cc:     netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
        Roi Dayan <roid@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        Marcelo Ricardo Leitner <mleitner@...hat.com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Edward Cree <ecree.xilinx@...il.com>
Subject: Re: [PATCH  net-next 4/9] net/sched: introduce flow_offload action
 cookie

On Wed, Feb 01, 2023 at 06:10:33PM +0200, Oz Shlomo wrote:
> Currently a hardware action is uniquely identified by the <id, hw_index>
> tuple. However, the id is set by the flow_act_setup callback and tc core
> cannot enforce this, and it is possible that a future change could break
> this. In addition, <id, hw_index> are not unique across network namespaces.
> 
> Uniquely identify the action by setting an action cookie by the tc core.
> Use the unique action cookie to query the action's hardware stats.
> 
> Signed-off-by: Oz Shlomo <ozsh@...dia.com>

Reviewed-by: Simon Horman <simon.horman@...igine.com>