In multi-chip systems, DSA Tag ports must learn SA addresses in order to
correctly switch frames between interconnected chips.
This fixes cross-chip hardware bridging in a VLAN filtering aware
system, because a bridge group gets implemented as an hardware 802.1Q
VLAN and thus DSA and user ports share the same FDB.
Fixes: 4c7ea3c0791e ("net: dsa: mv88e6xxx: disable SA learning for DSA and CPU
ports")
Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 7725e29..46c9b4c 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -2542,8 +2542,8 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds,
int port)
* the other bits clear.
*/
reg = 1 << port;
- /* Disable learning for DSA and CPU ports */
- if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
+ /* Disable learning for CPU port */
+ if (dsa_is_cpu_port(ds, port))
reg = 0;
ret = _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_ASSOC_VECTOR, reg);
--
2.8.0
