[patch net-next v4 12/13] dsa: pass switch ID through devlink_port_attrs_set()

[Jiri Pirko]

From: Jiri Pirko <j...@mellanox.com>

Pass the switch ID down the to devlink through devlink_port_attrs_set()
so it can be used by devlink_compat_switch_id_get(). Leave
ndo_get_port_parent_id implementation only for legacy.

Signed-off-by: Jiri Pirko <j...@mellanox.com>
Reviewed-by: Florian Fainelli <f.faine...@gmail.com>
---
v2->v3:
- fix parent id ndo compilation issue
---
 net/dsa/dsa2.c  | 4 +++-
 net/dsa/slave.c | 7 +++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 4493b2ff3438..d122f1bcdab2 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -260,6 +260,7 @@ static int dsa_port_setup(struct dsa_port *dp)
 {
        enum devlink_port_flavour flavour;
        struct dsa_switch *ds = dp->ds;
+       struct dsa_switch_tree *dst = ds->dst;
        int err;
 
        if (dp->type == DSA_PORT_TYPE_UNUSED)
@@ -286,7 +287,8 @@ static int dsa_port_setup(struct dsa_port *dp)
         * independent from front panel port numbers.
         */
        devlink_port_attrs_set(&dp->devlink_port, flavour,
-                              dp->index, false, 0, NULL, 0);
+                              dp->index, false, 0,
+                              (const char *) &dst->index, sizeof(dst->index));
        err = devlink_port_register(ds->devlink, &dp->devlink_port,
                                    dp->index);
        if (err)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f83525909c57..ce26dddc8270 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -379,6 +379,13 @@ static int dsa_slave_get_port_parent_id(struct net_device 
*dev,
        struct dsa_switch *ds = dp->ds;
        struct dsa_switch_tree *dst = ds->dst;
 
+       /* For non-legacy ports, devlink is used and it takes
+        * care of the name generation. This ndo implementation
+        * should be removed with legacy support.
+        */
+       if (dp->ds->devlink)
+               return -EOPNOTSUPP;
+
        ppid->id_len = sizeof(dst->index);
        memcpy(&ppid->id, &dst->index, ppid->id_len);
 
-- 
2.17.2