On Mon, Oct 16, 2023 at 03:27:22PM +0200, Johannes Nixdorf wrote: > The previous patch added accounting and a limit for the number of > dynamically learned FDB entries per bridge. However it did not provide > means to actually configure those bounds or read back the count. This > patch does that. > > Two new netlink attributes are added for the accounting and limit of > dynamically learned FDB entries: > - IFLA_BR_FDB_N_LEARNED (RO) for the number of entries accounted for > a single bridge. > - IFLA_BR_FDB_MAX_LEARNED (RW) for the configured limit of entries for > the bridge. > > The new attributes are used like this: > > # ip link add name br up type bridge fdb_max_learned 256 > # ip link add name v1 up master br type veth peer v2 > # ip link set up dev v2 > # mausezahn -a rand -c 1024 v2 > 0.01 seconds (90877 packets per second > # bridge fdb | grep -v permanent | wc -l > 256 > # ip -d link show dev br > 13: br: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 [...] > [...] fdb_n_learned 256 fdb_max_learned 256 > > Signed-off-by: Johannes Nixdorf <jnixdorf-oss@xxxxxx> Reviewed-by: Ido Schimmel <idosch@xxxxxxxxxx>
