diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-08-08 14:16:37 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-08 12:52:53 +0100 |
| commit | 39f32101543be35c60dd984b44c620d565083d33 (patch) | |
| tree | 0b37fcc26ee2fe5fa63cc209fd7f847332b9d3de /net/dsa/slave.c | |
| parent | f9be84db09d2e8930319503683305781378a7dbf (diff) | |
net: dsa: don't fast age standalone ports
DSA drives the procedure to flush dynamic FDB entries from a port based
on the change of STP state: whenever we go from a state where address
learning is enabled (LEARNING, FORWARDING) to a state where it isn't
(LISTENING, BLOCKING, DISABLED), we need to flush the existing dynamic
entries.
However, there are cases when this is not needed. Internally, when a
DSA switch interface is not under a bridge, DSA still keeps it in the
"FORWARDING" STP state. And when that interface joins a bridge, the
bridge will meticulously iterate that port through all STP states,
starting with BLOCKING and ending with FORWARDING. Because there is a
state transition from the standalone version of FORWARDING into the
temporary BLOCKING bridge port state, DSA calls the fast age procedure.
Since commit 5e38c15856e9 ("net: dsa: configure better brport flags when
ports leave the bridge"), DSA asks standalone ports to disable address
learning. Therefore, there can be no dynamic FDB entries on a standalone
port. Therefore, it does not make sense to flush dynamic FDB entries on
one.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/slave.c')
| -rw-r--r-- | net/dsa/slave.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 022174635bc1..acf73db5cafc 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -286,7 +286,7 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx, if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev)) return -EOPNOTSUPP; - ret = dsa_port_set_state(dp, attr->u.stp_state); + ret = dsa_port_set_state(dp, attr->u.stp_state, true); break; case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: if (!dsa_port_offloads_bridge(dp, attr->orig_dev)) |