netdev - [PATCH net-next 0/3] bridge: dsa: switchdev: mv88e6xxx: Implement local

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Date:   Tue,  1 Mar 2022 13:31:01 +0100
From:   Mattias Forsblad <mattias.forsblad@...il.com>
To:     netdev@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        Mattias Forsblad <mattias.forsblad+netdev@...il.com>,
        Tobias Waldekranz <tobias@...dekranz.com>
Subject: [PATCH net-next 0/3] bridge: dsa: switchdev: mv88e6xxx: Implement local_receive bridge flag

Greetings,

This series implements a new bridge flag 'local_receive' and HW
offloading for Marvell mv88e6xxx.

When using a non-VLAN filtering bridge we want to be able to limit
traffic to the CPU port to lessen the CPU load. This is specially
important when we have disabled learning on user ports.

A sample configuration could be something like this:

       br0
      /   \
   swp0   swp1

ip link add dev br0 type bridge stp_state 0 vlan_filtering 0
ip link set swp0 master br0
ip link set swp1 master br0
ip link set swp0 type bridge_slave learning off
ip link set swp1 type bridge_slave learning off
ip link set swp0 up
ip link set swp1 up
ip link set br0 type bridge local_receive 0
ip link set br0 up

The first part of the series implements the flag for the SW bridge
and the second part the DSA infrastructure. The last part implements
offloading of this flag to HW for mv88e6xxx, which uses the
port vlan table to restrict the ingress from user ports
to the CPU port when this flag is cleared.

Reviewed-by: Tobias Waldekranz <tobias@...dekranz.com>

Regards,
Mattias Forsblad (3):
  net: bridge: Implement bridge flag local_receive
  dsa: Handle the local_receive flag in the DSA layer.
  mv88e6xxx: Offload the local_receive flag

 drivers/net/dsa/mv88e6xxx/chip.c | 45 ++++++++++++++++++++++++++++++--
 include/linux/if_bridge.h        |  6 +++++
 include/net/dsa.h                |  6 +++++
 include/net/switchdev.h          |  2 ++
 include/uapi/linux/if_bridge.h   |  1 +
 include/uapi/linux/if_link.h     |  1 +
 net/bridge/br.c                  | 18 +++++++++++++
 net/bridge/br_device.c           |  1 +
 net/bridge/br_input.c            |  3 +++
 net/bridge/br_ioctl.c            |  1 +
 net/bridge/br_netlink.c          | 14 +++++++++-
 net/bridge/br_private.h          |  2 ++
 net/bridge/br_sysfs_br.c         | 23 ++++++++++++++++
 net/bridge/br_vlan.c             |  8 ++++++
 net/dsa/dsa_priv.h               |  1 +
 net/dsa/slave.c                  | 16 ++++++++++++
 16 files changed, 145 insertions(+), 3 deletions(-)

-- 
2.25.1