[RFC PATCH 08/16] dsa: Copy the routing table into the switch structure

[Andrew Lunn]

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 <and...@lunn.ch>
---
 drivers/net/dsa/mv88e6xxx.c |  4 ++--
 include/net/dsa.h           | 10 +++++++++-
 net/dsa/dsa.c               |  2 ++
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index d622c0fb76cc..492801a6398c 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -3024,8 +3024,8 @@ static int mv88e6xxx_setup_global(struct 
mv88e6xxx_priv_state *ps)
        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 37e8e179d85a..ea0e7d30342b 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -149,6 +149,14 @@ struct dsa_switch {
         */
        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
@@ -195,7 +203,7 @@ static inline u8 dsa_upstream_port(struct dsa_switch *ds)
        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 6177dd750847..bfe1d03d4730 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -297,6 +297,8 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, 
struct device *parent)
                dst->tag_protocol = drv->tag_protocol;
        }
 
+       memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
+
        /*
         * Do basic register setup.
         */
-- 
2.8.1