net: dsa: mt7530: enable MTU normalization

MT7530 has a global RX length register, so we are actually changing its
MRU.
Enable MTU normalization for this reason.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Acked-by: Landen Chao <landen.chao@mediatek.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20201210170322.3433-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 99bf8fe..a67cac1 100644 (file)
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1657,6 +1657,7 @@ mt7530_setup(struct dsa_switch *ds)
         */
        dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent;
        ds->configure_vlan_while_not_filtering = true;
+       ds->mtu_enforcement_ingress = true;
 
        if (priv->id == ID_MT7530) {
                regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
@@ -1895,6 +1896,7 @@ mt7531_setup(struct dsa_switch *ds)
        }
 
        ds->configure_vlan_while_not_filtering = true;
+       ds->mtu_enforcement_ingress = true;
 
        /* Flush the FDB table */
        ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);