[Bridge] [PATCH net-next 0/2] net: bridge: mcast: add support for port/vlan router control

Nikolay Aleksandrov razor at blackwall.org
Fri Aug 20 12:42:53 UTC 2021

From: Nikolay Aleksandrov <nikolay at nvidia.com>

This small set adds control over port/vlan mcast router config.
Initially I had added host vlan entry router control via vlan's global
options but that is really unnecessary and we can use a single per-vlan
option to control it both for port/vlan and host/vlan entries. Since
it's all still in net-next we can convert BRIDGE_VLANDB_GOPTS_MCAST_ROUTER
to BRIDGE_VLANDB_ENTRY_MCAST_ROUTER and use it for both. That makes much
more sense and is easier for user-space. Patch 01 prepares the port
router function to be used with port mcast context instead of port and
then patch 02 converts the global vlan mcast router option to per-vlan
mcast router option which directly gives us both host/vlan and port/vlan
mcast router control without any additional changes.

This way we get the following coherent syntax:
 [ port/vlan mcast router]
 $ bridge vlan set vid 100 dev ens20 mcast_router 2

 [ bridge/vlan mcast router ]
 $ bridge vlan set vid 100 dev bridge mcast_router 2
instead of:
 $ bridge vlan set vid 100 dev bridge mcast_router 1 global

The mcast_router should not be regarded as a global option, it controls
the port/vlan and bridge/vlan mcast router behaviour.

This is the last set needed for the initial per-vlan mcast support.
Next patch-sets:
 - iproute2 support
 - selftests


Nikolay Aleksandrov (2):
  net: bridge: mcast: br_multicast_set_port_router takes multicast
    context as argument
  net: bridge: vlan: convert mcast router global opt to per-vlan entry

 include/uapi/linux/if_bridge.h |  2 +-
 net/bridge/br_multicast.c      | 24 ++++++++++++----
 net/bridge/br_netlink.c        |  3 +-
 net/bridge/br_private.h        | 18 +++++++++++-
 net/bridge/br_sysfs_if.c       |  2 +-
 net/bridge/br_vlan.c           |  1 +
 net/bridge/br_vlan_options.c   | 51 ++++++++++++++++++++++------------
 7 files changed, 74 insertions(+), 27 deletions(-)


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