From: DENG Qingfang dqfext@gmail.com
[ Upstream commit e045124e93995fe01e42ed530003ddba5d55db4f ]
In VLAN-unaware mode, the Egress Tag (EG_TAG) field in Port VLAN Control register must be set to Consistent to let tagged frames pass through as is, otherwise their tags will be stripped.
Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530") Signed-off-by: DENG Qingfang dqfext@gmail.com Reviewed-by: Florian Fainelli f.fainelli@gmail.com Tested-by: René van Dorst opensource@vdorst.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/dsa/mt7530.c | 18 ++++++++++++------ drivers/net/dsa/mt7530.h | 7 +++++++ 2 files changed, 19 insertions(+), 6 deletions(-)
--- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -857,8 +857,9 @@ mt7530_port_set_vlan_unaware(struct dsa_ */ mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK, MT7530_PORT_MATRIX_MODE); - mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK, - VLAN_ATTR(MT7530_VLAN_TRANSPARENT)); + mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK, + VLAN_ATTR(MT7530_VLAN_TRANSPARENT) | + PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
for (i = 0; i < MT7530_NUM_PORTS; i++) { if (dsa_is_user_port(ds, i) && @@ -874,8 +875,8 @@ mt7530_port_set_vlan_unaware(struct dsa_ if (all_user_ports_removed) { mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT), PCR_MATRIX(dsa_user_ports(priv->ds))); - mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), - PORT_SPEC_TAG); + mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), PORT_SPEC_TAG + | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); } }
@@ -901,8 +902,9 @@ mt7530_port_set_vlan_aware(struct dsa_sw /* Set the port as a user port which is to be able to recognize VID * from incoming packets before fetching entry within the VLAN table. */ - mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK, - VLAN_ATTR(MT7530_VLAN_USER)); + mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK, + VLAN_ATTR(MT7530_VLAN_USER) | + PVC_EG_TAG(MT7530_VLAN_EG_DISABLED)); }
static void @@ -1332,6 +1334,10 @@ mt7530_setup(struct dsa_switch *ds) mt7530_cpu_port_enable(priv, i); else mt7530_port_disable(ds, i); + + /* Enable consistent egress tag */ + mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK, + PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT)); }
/* Setup port 5 */ --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -167,9 +167,16 @@ enum mt7530_port_mode { /* Register for port vlan control */ #define MT7530_PVC_P(x) (0x2010 + ((x) * 0x100)) #define PORT_SPEC_TAG BIT(5) +#define PVC_EG_TAG(x) (((x) & 0x7) << 8) +#define PVC_EG_TAG_MASK PVC_EG_TAG(7) #define VLAN_ATTR(x) (((x) & 0x3) << 6) #define VLAN_ATTR_MASK VLAN_ATTR(3)
+enum mt7530_vlan_port_eg_tag { + MT7530_VLAN_EG_DISABLED = 0, + MT7530_VLAN_EG_CONSISTENT = 1, +}; + enum mt7530_vlan_port_attr { MT7530_VLAN_USER = 0, MT7530_VLAN_TRANSPARENT = 3,