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Date: Mon, 6 Nov 2017 16:11:48 -0500
From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
"David S. Miller" <davem@...emloft.net>,
Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next 06/11] net: dsa: setup and teardown ports
The dsa_dsa_port_apply and dsa_cpu_port_apply functions do exactly the
same. The dsa_user_port_apply function does not try to register a fixed
link but try to create a slave.
This commit factorizes and scopes all that in two convenient
dsa_port_setup and dsa_port_teardown functions.
It won't hurt to register a devlink_port for unused port as well.
Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
net/dsa/dsa2.c | 175 ++++++++++++++++++++-------------------------------------
1 file changed, 60 insertions(+), 115 deletions(-)
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 2b3b2a86791d..676c0bc943dd 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -281,91 +281,65 @@ static void dsa_tree_teardown_default_cpu(struct dsa_switch_tree *dst)
dst->cpu_dp = NULL;
}
-static int dsa_dsa_port_apply(struct dsa_port *port)
+static int dsa_port_setup(struct dsa_port *dp)
{
- struct dsa_switch *ds = port->ds;
+ struct dsa_switch *ds = dp->ds;
int err;
- err = dsa_port_fixed_link_register_of(port);
- if (err) {
- dev_warn(ds->dev, "Failed to setup dsa port %d: %d\n",
- port->index, err);
- return err;
- }
+ memset(&dp->devlink_port, 0, sizeof(dp->devlink_port));
- memset(&port->devlink_port, 0, sizeof(port->devlink_port));
-
- return devlink_port_register(ds->devlink, &port->devlink_port,
- port->index);
-}
-
-static void dsa_dsa_port_unapply(struct dsa_port *port)
-{
- devlink_port_unregister(&port->devlink_port);
- dsa_port_fixed_link_unregister_of(port);
-}
-
-static int dsa_cpu_port_apply(struct dsa_port *port)
-{
- struct dsa_switch *ds = port->ds;
- int err;
-
- err = dsa_port_fixed_link_register_of(port);
- if (err) {
- dev_warn(ds->dev, "Failed to setup cpu port %d: %d\n",
- port->index, err);
- return err;
- }
-
- memset(&port->devlink_port, 0, sizeof(port->devlink_port));
- err = devlink_port_register(ds->devlink, &port->devlink_port,
- port->index);
- return err;
-}
-
-static void dsa_cpu_port_unapply(struct dsa_port *port)
-{
- devlink_port_unregister(&port->devlink_port);
- dsa_port_fixed_link_unregister_of(port);
-}
-
-static int dsa_user_port_apply(struct dsa_port *port)
-{
- struct dsa_switch *ds = port->ds;
- int err;
-
- err = dsa_slave_create(port);
- if (err) {
- dev_warn(ds->dev, "Failed to create slave %d: %d\n",
- port->index, err);
- port->slave = NULL;
- return err;
- }
-
- memset(&port->devlink_port, 0, sizeof(port->devlink_port));
- err = devlink_port_register(ds->devlink, &port->devlink_port,
- port->index);
+ err = devlink_port_register(ds->devlink, &dp->devlink_port, dp->index);
if (err)
return err;
- devlink_port_type_eth_set(&port->devlink_port, port->slave);
+ switch (dp->type) {
+ case DSA_PORT_TYPE_UNUSED:
+ break;
+ case DSA_PORT_TYPE_CPU:
+ case DSA_PORT_TYPE_DSA:
+ err = dsa_port_fixed_link_register_of(dp);
+ if (err) {
+ dev_err(ds->dev, "failed to register fixed link for port %d.%d\n",
+ ds->index, dp->index);
+ return err;
+ }
+
+ break;
+ case DSA_PORT_TYPE_USER:
+ err = dsa_slave_create(dp);
+ if (err)
+ dev_err(ds->dev, "failed to create slave for port %d.%d\n",
+ ds->index, dp->index);
+ else
+ devlink_port_type_eth_set(&dp->devlink_port, dp->slave);
+ break;
+ }
return 0;
}
-static void dsa_user_port_unapply(struct dsa_port *port)
+static void dsa_port_teardown(struct dsa_port *dp)
{
- devlink_port_unregister(&port->devlink_port);
- if (port->slave) {
- dsa_slave_destroy(port->slave);
- port->slave = NULL;
+ devlink_port_unregister(&dp->devlink_port);
+
+ switch (dp->type) {
+ case DSA_PORT_TYPE_UNUSED:
+ break;
+ case DSA_PORT_TYPE_CPU:
+ case DSA_PORT_TYPE_DSA:
+ dsa_port_fixed_link_unregister_of(dp);
+ break;
+ case DSA_PORT_TYPE_USER:
+ if (dp->slave) {
+ dsa_slave_destroy(dp->slave);
+ dp->slave = NULL;
+ }
+ break;
}
}
static int dsa_switch_setup(struct dsa_switch *ds)
{
- struct dsa_port *port;
- u32 index;
int err;
/* Initialize ds->phys_mii_mask before registering the slave MDIO bus
@@ -406,56 +380,11 @@ static int dsa_switch_setup(struct dsa_switch *ds)
return err;
}
- for (index = 0; index < ds->num_ports; index++) {
- port = &ds->ports[index];
- if (!dsa_port_is_valid(port))
- continue;
-
- if (dsa_port_is_dsa(port)) {
- err = dsa_dsa_port_apply(port);
- if (err)
- return err;
- continue;
- }
-
- if (dsa_port_is_cpu(port)) {
- err = dsa_cpu_port_apply(port);
- if (err)
- return err;
- continue;
- }
-
- err = dsa_user_port_apply(port);
- if (err)
- continue;
- }
-
return 0;
}
static void dsa_switch_teardown(struct dsa_switch *ds)
{
- struct dsa_port *port;
- u32 index;
-
- for (index = 0; index < ds->num_ports; index++) {
- port = &ds->ports[index];
- if (!dsa_port_is_valid(port))
- continue;
-
- if (dsa_port_is_dsa(port)) {
- dsa_dsa_port_unapply(port);
- continue;
- }
-
- if (dsa_port_is_cpu(port)) {
- dsa_cpu_port_unapply(port);
- continue;
- }
-
- dsa_user_port_unapply(port);
- }
-
if (ds->slave_mii_bus && ds->ops->phy_read)
mdiobus_unregister(ds->slave_mii_bus);
@@ -472,7 +401,8 @@ static void dsa_switch_teardown(struct dsa_switch *ds)
static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
{
struct dsa_switch *ds;
- int device;
+ struct dsa_port *dp;
+ int device, port;
int err;
for (device = 0; device < DSA_MAX_SWITCHES; device++) {
@@ -483,6 +413,14 @@ static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
err = dsa_switch_setup(ds);
if (err)
return err;
+
+ for (port = 0; port < ds->num_ports; port++) {
+ dp = &ds->ports[port];
+
+ err = dsa_port_setup(dp);
+ if (err)
+ return err;
+ }
}
return 0;
@@ -491,13 +429,20 @@ static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
static void dsa_tree_teardown_switches(struct dsa_switch_tree *dst)
{
struct dsa_switch *ds;
- int device;
+ struct dsa_port *dp;
+ int device, port;
for (device = 0; device < DSA_MAX_SWITCHES; device++) {
ds = dst->ds[device];
if (!ds)
continue;
+ for (port = 0; port < ds->num_ports; port++) {
+ dp = &ds->ports[port];
+
+ dsa_port_teardown(dp);
+ }
+
dsa_switch_teardown(ds);
}
}
--
2.14.3
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