generic ar8xxx: increase VLAN table for AR83x7

The Atheros AR8327 and AR8337 have (according to their datasheet) a
VLAN table with a maximum of 4096 entries.

Currently, there's a hard limit of 128 VLANs, which is the same as
for most other Atheros switches. Increase this limit only for the
AR83x7 series and modify some shared functions to allow them to work
with a variable max VLAN count.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 3f79aaa297)

target/linux/generic/files/drivers/net/phy/ar8216.c

@@ -1204,7 +1204,7 @@ ar8xxx_sw_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
 {
 	struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 
-	if (val->port_vlan >= AR8X16_MAX_VLANS)
+	if (val->port_vlan >= dev->vlans)
 		return -EINVAL;
 
 	priv->vlan_id[val->port_vlan] = val->value.i;
@@ -1237,7 +1237,7 @@ ar8xxx_sw_get_ports(struct switch_dev *dev, struct switch_val *val)
 	u8 ports;
 	int i;
 
-	if (val->port_vlan >= AR8X16_MAX_VLANS)
+	if (val->port_vlan >= dev->vlans)
 		return -EINVAL;
 
 	ports = priv->vlan_table[val->port_vlan];
@@ -1277,7 +1277,7 @@ ar8xxx_sw_set_ports(struct switch_dev *dev, struct switch_val *val)
 
 			/* make sure that an untagged port does not
 			 * appear in other vlans */
-			for (j = 0; j < AR8X16_MAX_VLANS; j++) {
+			for (j = 0; j < dev->vlans; j++) {
 				if (j == val->port_vlan)
 					continue;
 				priv->vlan_table[j] &= ~(1 << p->id);
@@ -1356,7 +1356,7 @@ ar8xxx_sw_hw_apply(struct switch_dev *dev)
 	if (!priv->init) {
 		/* calculate the port destination masks and load vlans
 		 * into the vlan translation unit */
-		for (j = 0; j < AR8X16_MAX_VLANS; j++) {
+		for (j = 0; j < dev->vlans; j++) {
 			u8 vp = priv->vlan_table[j];
 
 			if (!vp)
@@ -1409,7 +1409,7 @@ ar8xxx_sw_reset_switch(struct switch_dev *dev)
 	memset(&priv->vlan, 0, sizeof(struct ar8xxx_priv) -
 		offsetof(struct ar8xxx_priv, vlan));
 
-	for (i = 0; i < AR8X16_MAX_VLANS; i++)
+	for (i = 0; i < dev->vlans; i++)
 		priv->vlan_id[i] = i;
 
 	/* Configure all ports */

target/linux/generic/files/drivers/net/phy/ar8216.h

@@ -31,6 +31,9 @@
 
 /* size of the vlan table */
 #define AR8X16_MAX_VLANS	128
+#define AR83X7_MAX_VLANS	4096
+#define AR8XXX_MAX_VLANS	AR83X7_MAX_VLANS
+
 #define AR8X16_PROBE_RETRIES	10
 #define AR8X16_MAX_PORTS	8
 
@@ -504,8 +507,9 @@ struct ar8xxx_priv {
 
 	/* all fields below are cleared on reset */
 	bool vlan;
-	u16 vlan_id[AR8X16_MAX_VLANS];
-	u8 vlan_table[AR8X16_MAX_VLANS];
+
+	u16 vlan_id[AR8XXX_MAX_VLANS];
+	u8 vlan_table[AR8XXX_MAX_VLANS];
 	u8 vlan_tagged;
 	u16 pvid[AR8X16_MAX_PORTS];
 	int arl_age_time;

target/linux/generic/files/drivers/net/phy/ar8327.c

@@ -1481,7 +1481,7 @@ const struct ar8xxx_chip ar8327_chip = {
 
 	.name = "Atheros AR8327",
 	.ports = AR8327_NUM_PORTS,
-	.vlans = AR8X16_MAX_VLANS,
+	.vlans = AR83X7_MAX_VLANS,
 	.swops = &ar8327_sw_ops,
 
 	.reg_port_stats_start = 0x1000,
@@ -1518,7 +1518,7 @@ const struct ar8xxx_chip ar8337_chip = {
 
 	.name = "Atheros AR8337",
 	.ports = AR8327_NUM_PORTS,
-	.vlans = AR8X16_MAX_VLANS,
+	.vlans = AR83X7_MAX_VLANS,
 	.swops = &ar8327_sw_ops,
 
 	.reg_port_stats_start = 0x1000,