net: dsa: Copy the routing table into the switch structure

The new binding will not have a chip data structure, it will place the
routing directly into the switch structure. To enable backwards
compatibility, copy the routing from the chip data into the switch
structure.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index d622c0f..492801a 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -3024,8 +3024,8 @@
 	for (i = 0; i < 32; i++) {
 		int nexthop = 0x1f;
 
-		if (i != ps->ds->index && i < ps->ds->dst->pd->nr_chips)
-			nexthop = ps->ds->cd->rtable[i] & 0x1f;
+		if (i != ds->index && i < DSA_MAX_SWITCHES)
+			nexthop = ds->rtable[i] & 0x1f;
 
 		err = _mv88e6xxx_reg_write(
 			ps, REG_GLOBAL2,
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 4e3afa9..b666f27 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -148,6 +148,13 @@
 	 */
 	struct dsa_switch_driver	*drv;
 
+	/*
+	 * An array of which element [a] indicates which port on this
+	 * switch should be used to send packets to that are destined
+	 * for switch a. Can be NULL if there is only one switch chip.
+	 */
+	s8		rtable[DSA_MAX_SWITCHES];
+
 #ifdef CONFIG_NET_DSA_HWMON
 	/*
 	 * Hardware monitoring information
@@ -194,7 +201,7 @@
 	if (dst->cpu_switch == ds->index)
 		return dst->cpu_port;
 	else
-		return ds->cd->rtable[dst->cpu_switch];
+		return ds->rtable[dst->cpu_switch];
 }
 
 struct switchdev_trans;
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 6177dd7..bfe1d03 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -297,6 +297,8 @@
 		dst->tag_protocol = drv->tag_protocol;
 	}
 
+	memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
+
 	/*
 	 * Do basic register setup.
 	 */