net: bridge: multicast: make tracked EHT hosts limit configurable
authorNikolay Aleksandrov <nikolay@nvidia.com>
Tue, 26 Jan 2021 09:35:33 +0000 (11:35 +0200)
committerJakub Kicinski <kuba@kernel.org>
Thu, 28 Jan 2021 01:40:35 +0000 (17:40 -0800)
commit2dba407f994e5b0eb3b70a8cb280e014ec4a7ff3
treeceb3a5e7bd00174202d0b1aad547ce909c29f389
parent89268b056ed116e13ba39f46481ad8bf5eef7bc4
net: bridge: multicast: make tracked EHT hosts limit configurable

Add two new port attributes which make EHT hosts limit configurable and
export the current number of tracked EHT hosts:
 - IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT: configure/retrieve current limit
 - IFLA_BRPORT_MCAST_EHT_HOSTS_CNT: current number of tracked hosts
Setting IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT to 0 is currently not allowed.

Note that we have to increase RTNL_SLAVE_MAX_TYPE to 38 minimum, I've
increased it to 40 to have space for two more future entries.

v2: move br_multicast_eht_set_hosts_limit() to br_multicast_eht.c,
    no functional change

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
include/uapi/linux/if_link.h
net/bridge/br_multicast_eht.c
net/bridge/br_netlink.c
net/bridge/br_private_mcast_eht.h
net/bridge/br_sysfs_if.c
net/core/rtnetlink.c