netdev - Re: [PATCH v2 net-next 00/10] net: ocelot: VCAP IS1 and ES0 support

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Date:   Tue, 2 Jun 2020 11:03:19 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Xiaoliang Yang <xiaoliang.yang_1@....com>
Cc:     Po Liu <po.liu@....com>, Claudiu Manoil <claudiu.manoil@....com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Li Yang <leoyang.li@....com>, Mingkai Hu <mingkai.hu@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...nulli.us>,
        Ido Schimmel <idosch@...sch.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        netdev <netdev@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "Allan W. Nielsen" <allan.nielsen@...rochip.com>,
        Joergen Andreasen <joergen.andreasen@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        linux-devel@...ux.nxdi.nxp.com
Subject: Re: [PATCH v2 net-next 00/10] net: ocelot: VCAP IS1 and ES0 support

Hi Xiaoliang,

On Tue, 2 Jun 2020 at 08:25, Xiaoliang Yang <xiaoliang.yang_1@....com> wrote:
>
> This series patches adds support for VCAP IS1 and ES0 module, each VCAP
> correspond to a flow chain to offload.
>
> VCAP IS1 supports FLOW_ACTION_VLAN_MANGLE action to filter MAC, IP,
> VLAN, protocol, and TCP/UDP ports keys and retag vlian tag,
> FLOW_ACTION_PRIORITY action to classify packages to different Qos in hw.
>
> VCAP ES0 supports FLOW_ACTION_VLAN_PUSH action to filter vlan keys
> and push a specific vlan tag to frames.
>
> Changes since v1->v2:
>  - Use different chain to assign rules to different hardware VCAP, and
>    use action goto chain to express flow order.
>  - Add FLOW_ACTION_PRIORITY to add Qos classification on VCAP IS1.
>  - Multiple actions support.
>  - Fix some code issues.
>
> Vladimir Oltean (3):
>   net: mscc: ocelot: introduce a new ocelot_target_{read,write} API
>   net: mscc: ocelot: generalize existing code for VCAP
>   net: dsa: tag_ocelot: use VLAN information from tagging header when
>     available
>
> Xiaoliang Yang (7):
>   net: mscc: ocelot: allocated rules to different hardware VCAP TCAMs by
>     chain index
>   net: mscc: ocelot: change vcap to be compatible with full and quad
>     entry
>   net: mscc: ocelot: VCAP IS1 support
>   net: mscc: ocelot: VCAP ES0 support
>   net: mscc: ocelot: multiple actions support
>   net: ocelot: return error if rule is not found
>   net: dsa: felix: correct VCAP IS2 keys offset
>
>  drivers/net/dsa/ocelot/felix.c            |   2 -
>  drivers/net/dsa/ocelot/felix.h            |   2 -
>  drivers/net/dsa/ocelot/felix_vsc9959.c    | 202 +++++-
>  drivers/net/ethernet/mscc/ocelot.c        |  11 +
>  drivers/net/ethernet/mscc/ocelot_ace.c    | 729 ++++++++++++++++------
>  drivers/net/ethernet/mscc/ocelot_ace.h    |  26 +-
>  drivers/net/ethernet/mscc/ocelot_board.c  |   5 +-
>  drivers/net/ethernet/mscc/ocelot_flower.c |  95 ++-
>  drivers/net/ethernet/mscc/ocelot_io.c     |  17 +
>  drivers/net/ethernet/mscc/ocelot_regs.c   |  21 +-
>  drivers/net/ethernet/mscc/ocelot_s2.h     |  64 --
>  include/soc/mscc/ocelot.h                 |  39 +-
>  include/soc/mscc/ocelot_vcap.h            | 199 +++++-
>  net/dsa/tag_ocelot.c                      |  29 +
>  14 files changed, 1105 insertions(+), 336 deletions(-)
>  delete mode 100644 drivers/net/ethernet/mscc/ocelot_s2.h
>
> --
> 2.17.1
>

First of all, net-next has just closed yesterday and will be closed
for the following 2 weeks:
http://vger.kernel.org/~davem/net-next.html

Secondly, could you give an example of how different chains could
express the fact that rules are executed in parallel between the IS1,
IS2 and ES0 TCAMs?

Thanks,
-Vladimir