netdev - [RFC PATCH net-next v2 0/5] ice: L2TPv3 offload support

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Date:   Mon, 29 Aug 2022 11:44:07 +0200
From:   Wojciech Drewek <wojciech.drewek@...el.com>
To:     netdev@...r.kernel.org
Cc:     alexandr.lobakin@...el.com, jesse.brandeburg@...el.com,
        anthony.l.nguyen@...el.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        marcin.szycik@...ux.intel.com, michal.swiatkowski@...ux.intel.com,
        kurt@...utronix.de, boris.sukholitko@...adcom.com,
        vladbu@...dia.com, komachi.yoshiki@...il.com, paulb@...dia.com,
        baowen.zheng@...igine.com, louis.peens@...igine.com,
        simon.horman@...igine.com, pablo@...filter.org,
        maksym.glubokiy@...ision.eu, intel-wired-lan@...ts.osuosl.org,
        jchapman@...alix.com, gnault@...hat.com
Subject: [RFC PATCH net-next v2 0/5] ice: L2TPv3 offload support

Add support for dissecting L2TPv3 session id in flow dissector. Add support
for this field in tc-flower and support offloading L2TPv3. Finally, add
support for hardware offload of L2TPv3 packets based on session id in
switchdev mode in ice driver.

Example filter:
  # tc filter add dev $PF1 ingress prio 1 protocol ip \
      flower \
        ip_proto l2tp \
        l2tpv3_sid 1234 \
        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 in ice.
COMMS DDP package contains profiles of more advanced protocols.
Without COMMS DDP package hw offload will not work, however
sw offload will still work.

Marcin Szycik (1):
  ice: Add L2TPv3 hardware offload support

Wojciech Drewek (4):
  uapi: move IPPROTO_L2TP to in.h
  flow_dissector: Add L2TPv3 dissectors
  net/sched: flower: Add L2TPv3 filter
  flow_offload: Introduce flow_match_l2tpv3

 .../ethernet/intel/ice/ice_protocol_type.h    |  8 +++
 drivers/net/ethernet/intel/ice/ice_switch.c   | 70 ++++++++++++++++++-
 drivers/net/ethernet/intel/ice/ice_tc_lib.c   | 27 ++++++-
 drivers/net/ethernet/intel/ice/ice_tc_lib.h   |  6 ++
 include/net/flow_dissector.h                  |  9 +++
 include/net/flow_offload.h                    |  6 ++
 include/uapi/linux/in.h                       |  2 +
 include/uapi/linux/l2tp.h                     |  2 -
 include/uapi/linux/pkt_cls.h                  |  2 +
 net/core/flow_dissector.c                     | 28 ++++++++
 net/core/flow_offload.c                       |  7 ++
 net/sched/cls_flower.c                        | 16 +++++
 12 files changed, 179 insertions(+), 4 deletions(-)

-- 
2.31.1