[PATCH v5 net-next 11/15] net: dsa: Pass VLAN MSTI migration notifications to driver

Tobias Waldekranz
2022-03-16T15:10:05Z

Add the usual trampoline functionality from the generic DSA layer down
to the drivers for VLAN MSTI migrations.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
---
include/net/dsa.h | 3 +++
net/dsa/dsa_priv.h | 2 ++
net/dsa/port.c | 16 +++++++++++++++-
net/dsa/slave.c | 6 ++++++
4 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 9bfe984fcdbf..644fda2293a2 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -976,6 +976,9 @@ struct dsa_switch_ops {
struct netlink_ext_ack *extack);
int (*port_vlan_del)(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan);
+ int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge,
+ const struct switchdev_vlan_msti *msti);
+
/*
* Forwarding database
*/
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 2aba420696ef..d90b4cf0c9d2 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -236,6 +236,8 @@ bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
int dsa_port_mst_enable(struct dsa_port *dp, bool on,
struct netlink_ext_ack *extack);
+int dsa_port_vlan_msti(struct dsa_port *dp,
+ const struct switchdev_vlan_msti *msti);
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
bool targeted_match);
int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 02214033cec0..3ac114f6fc22 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -323,7 +323,10 @@ static void dsa_port_bridge_destroy(struct dsa_port *dp,

static bool dsa_port_supports_mst(struct dsa_port *dp)
{
- return dsa_port_can_configure_learning(dp);
+ struct dsa_switch *ds = dp->ds;
+
+ return ds->ops->vlan_msti_set &&
+ dsa_port_can_configure_learning(dp);
}

int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
@@ -800,6 +803,17 @@ int dsa_port_bridge_flags(struct dsa_port *dp,
return 0;
}

+int dsa_port_vlan_msti(struct dsa_port *dp,
+ const struct switchdev_vlan_msti *msti)
+{
+ struct dsa_switch *ds = dp->ds;
+
+ if (!ds->ops->vlan_msti_set)
+ return -EOPNOTSUPP;
+
+ return ds->ops->vlan_msti_set(ds, *dp->bridge, msti);
+}
+
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
bool targeted_match)
{
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 2e8f62476ce9..1b3e792d0327 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -483,6 +483,12 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx,

ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, extack);
break;
+ case SWITCHDEV_ATTR_ID_VLAN_MSTI:
+ if (!dsa_port_offloads_bridge_dev(dp, attr->orig_dev))
+ return -EOPNOTSUPP;
+
+ ret = dsa_port_vlan_msti(dp, &attr->u.vlan_msti);
+ break;
default:
ret = -EOPNOTSUPP;
break;
--
2.25.1