net: dsa: get port type at parse time

Assign a port's type at parsed time instead of waiting for the tree to
be completed.

Because this is now done earlier, we can use the port's type in
dsa_port_is_* helpers instead of digging again in topology description.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index a0ee91c..895c384 100644 (file)
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -87,23 +87,17 @@ static void dsa_dst_del_ds(struct dsa_switch_tree *dst,
  */
 static bool dsa_port_is_valid(struct dsa_port *port)
 {
-       return !!(port->dn || port->name);
+       return port->type != DSA_PORT_TYPE_UNUSED;
 }
 
 static bool dsa_port_is_dsa(struct dsa_port *port)
 {
-       if (port->name && !strcmp(port->name, "dsa"))
-               return true;
-       else
-               return !!of_parse_phandle(port->dn, "link", 0);
+       return port->type == DSA_PORT_TYPE_DSA;
 }
 
 static bool dsa_port_is_cpu(struct dsa_port *port)
 {
-       if (port->name && !strcmp(port->name, "cpu"))
-               return true;
-       else
-               return !!of_parse_phandle(port->dn, "ethernet", 0);
+       return port->type == DSA_PORT_TYPE_CPU;
 }
 
 static bool dsa_ds_find_port_dn(struct dsa_switch *ds,
@@ -183,8 +177,6 @@ static int dsa_ds_complete(struct dsa_switch_tree *dst, struct dsa_switch *ds)
                err = dsa_port_complete(dst, ds, port, index);
                if (err != 0)
                        return err;
-
-               port->type = DSA_PORT_TYPE_DSA;
        }
 
        return 0;
@@ -500,8 +492,6 @@ static int dsa_cpu_parse(struct dsa_port *port, u32 index,
                dst->cpu_dp->master = ethernet_dev;
        }
 
-       port->type = DSA_PORT_TYPE_CPU;
-
        tag_protocol = ds->ops->get_tag_protocol(ds);
        tag_ops = dsa_resolve_tag_protocol(tag_protocol);
        if (IS_ERR(tag_ops)) {
@@ -534,8 +524,6 @@ static int dsa_ds_parse(struct dsa_switch_tree *dst, struct dsa_switch *ds)
                        err = dsa_cpu_parse(port, index, dst, ds);
                        if (err)
                                return err;
-               } else {
-                       port->type = DSA_PORT_TYPE_USER;
                }
 
        }
@@ -592,6 +580,17 @@ static int dsa_dst_parse(struct dsa_switch_tree *dst)
 
 static int dsa_port_parse_of(struct dsa_port *dp, struct device_node *dn)
 {
+       struct device_node *ethernet = of_parse_phandle(dn, "ethernet", 0);
+       struct device_node *link = of_parse_phandle(dn, "link", 0);
+
+       if (ethernet) {
+               dp->type = DSA_PORT_TYPE_CPU;
+       } else if (link) {
+               dp->type = DSA_PORT_TYPE_DSA;
+       } else {
+               dp->type = DSA_PORT_TYPE_USER;
+       }
+
        dp->dn = dn;
 
        return 0;
@@ -631,6 +630,14 @@ static int dsa_parse_ports_of(struct device_node *dn, struct dsa_switch *ds)
 static int dsa_port_parse(struct dsa_port *dp, const char *name,
                          struct device *dev)
 {
+       if (!strcmp(name, "cpu")) {
+               dp->type = DSA_PORT_TYPE_CPU;
+       } else if (!strcmp(name, "dsa")) {
+               dp->type = DSA_PORT_TYPE_DSA;
+       } else {
+               dp->type = DSA_PORT_TYPE_USER;
+       }
+
        dp->name = name;
 
        return 0;