netdev - Re: TC stats / hw offload question

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Message-ID: <20190425223346.zqfadtphmhuj7ohp@salvia>
Date:   Fri, 26 Apr 2019 00:33:46 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Edward Cree <ecree@...arflare.com>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        netdev <netdev@...r.kernel.org>, Jiri Pirko <jiri@...nulli.us>,
        Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: TC stats / hw offload question

On Thu, Apr 25, 2019 at 02:23:08PM +0100, Edward Cree wrote:
> On 24/04/2019 16:03, Edward Cree wrote:
> > static int efx_tc_flower_replace(struct efx_nic *efx,
> >                                  struct net_device *net_dev,
> >                                  struct tc_cls_flower_offload *tc)
> > {
> >     struct efx_tc_action_set *act;
> >
> >     /* parse the match */
> >
> >     tcf_exts_for_each_action(i, a, tc->exts) {
> >         if (a->ops && a->ops->stats_update) {
> >             /* act is the hw action we're building */
> >             act->count = allocate_a_counter();
>
> Also, this was actually taking a->tcfa_index, allowing multiple rules to
>  share a counter.  The action index doesn't seem to be available in the
>  new flow_offload API.

Could you show a bit more code to see how you use a->tcfa_index from
your efx_tc_flower_replace()?

Thanks.