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authorJiri Pirko <jiri@nvidia.com>2022-09-29 09:29:01 +0200
committerJakub Kicinski <kuba@kernel.org>2022-09-30 18:17:16 -0700
commitc698a5fbf7fd9f5bb909d09626319b59d55db36b (patch)
treee9cce6ccbd55520a09d97b56658dfb8024d82aee /net/dsa
parentcf5ca4ddc37a693b17fdb653cb84b920b1185d71 (diff)
downloadlinux-c698a5fbf7fd9f5bb909d09626319b59d55db36b.tar.bz2
net: dsa: don't do devlink port setup early
Commit 3122433eb533 ("net: dsa: Register devlink ports before calling DSA driver setup()") moved devlink port setup to be done early before driver setup() was called. That is no longer needed, so move the devlink port initialization back to dsa_port_setup(), as the first thing done there. Note there is no longer needed to reinit port as unused if dsa_port_setup() fails, as it unregisters the devlink port instance on the error path. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/dsa2.c176
1 files changed, 82 insertions, 94 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 6f555b1bb483..747c0364fb0f 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -461,6 +461,74 @@ static void dsa_tree_teardown_cpu_ports(struct dsa_switch_tree *dst)
dp->cpu_dp = NULL;
}
+static int dsa_port_devlink_setup(struct dsa_port *dp)
+{
+ struct devlink_port *dlp = &dp->devlink_port;
+ struct dsa_switch_tree *dst = dp->ds->dst;
+ struct devlink_port_attrs attrs = {};
+ struct devlink *dl = dp->ds->devlink;
+ struct dsa_switch *ds = dp->ds;
+ const unsigned char *id;
+ unsigned char len;
+ int err;
+
+ memset(dlp, 0, sizeof(*dlp));
+ devlink_port_init(dl, dlp);
+
+ if (ds->ops->port_setup) {
+ err = ds->ops->port_setup(ds, dp->index);
+ if (err)
+ return err;
+ }
+
+ id = (const unsigned char *)&dst->index;
+ len = sizeof(dst->index);
+
+ attrs.phys.port_number = dp->index;
+ memcpy(attrs.switch_id.id, id, len);
+ attrs.switch_id.id_len = len;
+
+ switch (dp->type) {
+ case DSA_PORT_TYPE_UNUSED:
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_UNUSED;
+ break;
+ case DSA_PORT_TYPE_CPU:
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_CPU;
+ break;
+ case DSA_PORT_TYPE_DSA:
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_DSA;
+ break;
+ case DSA_PORT_TYPE_USER:
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ break;
+ }
+
+ devlink_port_attrs_set(dlp, &attrs);
+ err = devlink_port_register(dl, dlp, dp->index);
+ if (err) {
+ if (ds->ops->port_teardown)
+ ds->ops->port_teardown(ds, dp->index);
+ return err;
+ }
+ dp->devlink_port_setup = true;
+
+ return 0;
+}
+
+static void dsa_port_devlink_teardown(struct dsa_port *dp)
+{
+ struct devlink_port *dlp = &dp->devlink_port;
+ struct dsa_switch *ds = dp->ds;
+
+ if (dp->devlink_port_setup) {
+ devlink_port_unregister(dlp);
+ if (ds->ops->port_teardown)
+ ds->ops->port_teardown(ds, dp->index);
+ devlink_port_fini(dlp);
+ }
+ dp->devlink_port_setup = false;
+}
+
static int dsa_port_setup(struct dsa_port *dp)
{
struct devlink_port *dlp = &dp->devlink_port;
@@ -472,6 +540,10 @@ static int dsa_port_setup(struct dsa_port *dp)
if (dp->setup)
return 0;
+ err = dsa_port_devlink_setup(dp);
+ if (err)
+ return err;
+
switch (dp->type) {
case DSA_PORT_TYPE_UNUSED:
dsa_port_disable(dp);
@@ -526,64 +598,12 @@ static int dsa_port_setup(struct dsa_port *dp)
dsa_port_disable(dp);
if (err && dsa_port_link_registered)
dsa_shared_port_link_unregister_of(dp);
- if (err)
- return err;
-
- dp->setup = true;
-
- return 0;
-}
-
-static int dsa_port_devlink_setup(struct dsa_port *dp)
-{
- struct devlink_port *dlp = &dp->devlink_port;
- struct dsa_switch_tree *dst = dp->ds->dst;
- struct devlink_port_attrs attrs = {};
- struct devlink *dl = dp->ds->devlink;
- struct dsa_switch *ds = dp->ds;
- const unsigned char *id;
- unsigned char len;
- int err;
-
- memset(dlp, 0, sizeof(*dlp));
- devlink_port_init(dl, dlp);
-
- if (ds->ops->port_setup) {
- err = ds->ops->port_setup(ds, dp->index);
- if (err)
- return err;
- }
-
- id = (const unsigned char *)&dst->index;
- len = sizeof(dst->index);
-
- attrs.phys.port_number = dp->index;
- memcpy(attrs.switch_id.id, id, len);
- attrs.switch_id.id_len = len;
-
- switch (dp->type) {
- case DSA_PORT_TYPE_UNUSED:
- attrs.flavour = DEVLINK_PORT_FLAVOUR_UNUSED;
- break;
- case DSA_PORT_TYPE_CPU:
- attrs.flavour = DEVLINK_PORT_FLAVOUR_CPU;
- break;
- case DSA_PORT_TYPE_DSA:
- attrs.flavour = DEVLINK_PORT_FLAVOUR_DSA;
- break;
- case DSA_PORT_TYPE_USER:
- attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
- break;
- }
-
- devlink_port_attrs_set(dlp, &attrs);
- err = devlink_port_register(dl, dlp, dp->index);
if (err) {
- if (ds->ops->port_teardown)
- ds->ops->port_teardown(ds, dp->index);
+ dsa_port_devlink_teardown(dp);
return err;
}
- dp->devlink_port_setup = true;
+
+ dp->setup = true;
return 0;
}
@@ -618,31 +638,15 @@ static void dsa_port_teardown(struct dsa_port *dp)
break;
}
- dp->setup = false;
-}
-
-static void dsa_port_devlink_teardown(struct dsa_port *dp)
-{
- struct devlink_port *dlp = &dp->devlink_port;
- struct dsa_switch *ds = dp->ds;
+ dsa_port_devlink_teardown(dp);
- if (dp->devlink_port_setup) {
- devlink_port_unregister(dlp);
- if (ds->ops->port_teardown)
- ds->ops->port_teardown(ds, dp->index);
- devlink_port_fini(dlp);
- }
- dp->devlink_port_setup = false;
+ dp->setup = false;
}
-/* Destroy the current devlink port, and create a new one which has the UNUSED
- * flavour.
- */
-static int dsa_port_reinit_as_unused(struct dsa_port *dp)
+static int dsa_port_setup_as_unused(struct dsa_port *dp)
{
- dsa_port_devlink_teardown(dp);
dp->type = DSA_PORT_TYPE_UNUSED;
- return dsa_port_devlink_setup(dp);
+ return dsa_port_setup(dp);
}
static int dsa_devlink_info_get(struct devlink *dl,
@@ -866,7 +870,6 @@ static int dsa_switch_setup(struct dsa_switch *ds)
{
struct dsa_devlink_priv *dl_priv;
struct device_node *dn;
- struct dsa_port *dp;
int err;
if (ds->setup)
@@ -889,18 +892,9 @@ static int dsa_switch_setup(struct dsa_switch *ds)
dl_priv = devlink_priv(ds->devlink);
dl_priv->ds = ds;
- /* Setup devlink port instances now, so that the switch
- * setup() can register regions etc, against the ports
- */
- dsa_switch_for_each_port(dp, ds) {
- err = dsa_port_devlink_setup(dp);
- if (err)
- goto unregister_devlink_ports;
- }
-
err = dsa_switch_register_notifier(ds);
if (err)
- goto unregister_devlink_ports;
+ goto devlink_free;
ds->configure_vlan_while_not_filtering = true;
@@ -941,9 +935,7 @@ teardown:
ds->ops->teardown(ds);
unregister_notifier:
dsa_switch_unregister_notifier(ds);
-unregister_devlink_ports:
- dsa_switch_for_each_port(dp, ds)
- dsa_port_devlink_teardown(dp);
+devlink_free:
devlink_free(ds->devlink);
ds->devlink = NULL;
return err;
@@ -951,8 +943,6 @@ unregister_devlink_ports:
static void dsa_switch_teardown(struct dsa_switch *ds)
{
- struct dsa_port *dp;
-
if (!ds->setup)
return;
@@ -971,8 +961,6 @@ static void dsa_switch_teardown(struct dsa_switch *ds)
dsa_switch_unregister_notifier(ds);
if (ds->devlink) {
- dsa_switch_for_each_port(dp, ds)
- dsa_port_devlink_teardown(dp);
devlink_free(ds->devlink);
ds->devlink = NULL;
}
@@ -1025,7 +1013,7 @@ static int dsa_tree_setup_ports(struct dsa_switch_tree *dst)
if (dsa_port_is_user(dp) || dsa_port_is_unused(dp)) {
err = dsa_port_setup(dp);
if (err) {
- err = dsa_port_reinit_as_unused(dp);
+ err = dsa_port_setup_as_unused(dp);
if (err)
goto teardown;
}