netdev - Re: [PATCH net] net/sched: cls_flower: Set egress_dev mark when calling into the HW driver

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Message-ID: <20171016124150.GA2112@nanopsycho>
Date:   Mon, 16 Oct 2017 14:41:50 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Or Gerlitz <ogerlitz@...lanox.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>, netdev@...r.kernel.org,
        mlxsw@...lanox.com, Roi Dayan <roid@...lanox.com>
Subject: Re: [PATCH net] net/sched: cls_flower: Set egress_dev mark when
 calling into the HW driver

Mon, Oct 16, 2017 at 11:19:48AM CEST, ogerlitz@...lanox.com wrote:
>Commit 7091d8c '(net/sched: cls_flower: Add offload support using egress
>Hardware device') made sure (when fl_hw_replace_filter is called) to put
>the egress_dev mark on persisent structure instance. Hence, following calls
>into the HW driver for stats and deletion will note it and act accordingly.
>
>With commit de4784ca030f this property is lost and hence when called,
>the HW driver failes to operate (stats, delete) on the offloaded flow.
>
>Fix it by setting the egress_dev flag whenever the ingress device is
>different from the hw device since this is exactly the condition under
>which we're calling into the HW driver through the egress port net-device.
>
>Fixes: de4784ca030f ('net: sched: get rid of struct tc_to_netdev')
>Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
>Signed-off-by: Roi Dayan <roid@...lanox.com>

Acked-by: Jiri Pirko <jiri@...lanox.com>