leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net: dsa: don't fast age bridge ports with learning turned off

Browse Source 
On topology changes, stations that were dynamically learned on ports
that are no longer part of the active topology must be flushed - this is
described by clause "17.11 Updating learned station location information"
of IEEE 802.1D-2004.

However, when address learning on the bridge port is turned off in the
first place, there is nothing to flush, so skip a potentially expensive
operation.

We can finally do this now since DSA is aware of the learning state of
its bridged ports.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2021-08-08 17:35:24 +03:00 committed by David S. Miller
parent 045c45d1f5
commit 4eab90d973
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/dsa/port.c
View File

@ -50,7 +50,7 @@ int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age)
ds->ops->port_stp_state_set(ds, port, state); ds->ops->port_stp_state_set(ds, port, state);
if (do_fast_age) { if (do_fast_age && dp->learning) {
/* Fast age FDB entries or flush appropriate forwarding database /* Fast age FDB entries or flush appropriate forwarding database
* for the given port, if we are moving it from Learning or * for the given port, if we are moving it from Learning or
* Forwarding state, to Disabled or Blocking or Listening state. * Forwarding state, to Disabled or Blocking or Listening state.