Merge branch 'bridge-vlan' into next

Nikolay Aleksandrov  says:

====================

From: Nikolay Aleksandrov <nikolay@nvidia.com>

This set extends the bridge vlan code to use the new vlan RTM calls
which allow to dump detailed per-port, per-vlan information and also to
manipulate the per-vlan options. It also allows to monitor any vlan
changes (add/del/option change). The rtm vlan dumps have an extensible
format which allows us to add new options and attributes easily, and
also to request the kernel to filter on different vlan information when
dumping. The new kernel dump code tries to use compressed vlan format as
much as possible (it includes netlink attributes for vlan start and
end) to reduce the number of generated messages and netlink traffic.
The iproute2 support is activated by using the "-d" flag when showing
vlan information, that will cause it to use the new rtm dump call and
get all the detailed information, if "-s" is also specified it will dump
per-vlan statistics as well. Obviously in that case the vlans cannot be
compressed. To change per-vlan options (currently only STP state is
supported) a new vlan command is added - "set". It can be used to set
options of bridge or port vlans and vlan ranges can be used, all of the
new vlan option code uses extack to show more understandable errors.
The set adds the first supported per-vlan option - STP state.
Man pages and usage information are updated accordingly.

Example:
 $ bridge -d vlan show
 port              vlan-id
 ens13             1 PVID Egress Untagged
                     state forwarding
 bridge            1 PVID Egress Untagged
                     state forwarding

 $ bridge vlan set vid 1 dev ens13 state blocking
 $ bridge -d vlan show
 port              vlan-id
 ens13             1 PVID Egress Untagged
                     state blocking
 bridge            1 PVID Egress Untagged
                     state forwarding

====================

Signed-off-by: David Ahern <dsahern@kernel.org>