netdev - Re: [RFC PATCH net-next v3 4/4] ice: Add support for PPPoE hardware offload

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Message-ID: <20220630231244.GC392@debian.home>
Date:   Fri, 1 Jul 2022 01:12:44 +0200
From:   Guillaume Nault <gnault@...hat.com>
To:     Marcin Szycik <marcin.szycik@...ux.intel.com>
Cc:     netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        davem@...emloft.net, xiyou.wangcong@...il.com,
        jesse.brandeburg@...el.com, gustavoars@...nel.org,
        baowen.zheng@...igine.com, boris.sukholitko@...adcom.com,
        edumazet@...gle.com, kuba@...nel.org, jhs@...atatu.com,
        jiri@...nulli.us, kurt@...utronix.de, pablo@...filter.org,
        pabeni@...hat.com, paulb@...dia.com, simon.horman@...igine.com,
        komachi.yoshiki@...il.com, zhangkaiheb@....com,
        intel-wired-lan@...ts.osuosl.org,
        michal.swiatkowski@...ux.intel.com, wojciech.drewek@...el.com,
        alexandr.lobakin@...el.com, mostrows@...thlink.net,
        paulus@...ba.org
Subject: Re: [RFC PATCH net-next v3 4/4] ice: Add support for PPPoE hardware
 offload

On Wed, Jun 29, 2022 at 04:38:59PM +0200, Marcin Szycik wrote:
> Add support for creating PPPoE filters in switchdev mode. Add support
> for parsing PPPoE and PPP-specific tc options: pppoe_sid and ppp_proto.
> 
> Example filter:
> tc filter add dev $PF1 ingress protocol ppp_ses prio 1 flower pppoe_sid \
>     1234 ppp_proto ip skip_sw action mirred egress redirect dev $VF1_PR
> 
> Changes in iproute2 are required to use the new fields.
> 
> ICE COMMS DDP package is required to create a filter as it contains PPPoE
> profiles. Added a warning message when loaded DDP package does not contain
> required profiles.
> 
> Note: currently matching on vlan + PPPoE fields is not supported. Patch [0]
> will add this feature.
> 
> [0] https://patchwork.ozlabs.org/project/intel-wired-lan/patch/20220420210048.5809-1-martyna.szapar-mudlaw@intel.com

Out of curiosity, can ice direct PPPoE Session packets to different
queues with RSS (based on the session ID)?