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Date: Mon, 13 Dec 2021 11:14:30 +0100
From: Horatiu Vultur <horatiu.vultur@...rochip.com>
To: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <robh+dt@...nel.org>,
<UNGLinuxDriver@...rochip.com>, <linux@...linux.org.uk>,
<f.fainelli@...il.com>, <vivien.didelot@...il.com>,
<vladimir.oltean@....com>, <andrew@...n.ch>,
Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH net-next v4 08/10] net: lan966x: Extend switchdev with vlan support
Implement the switchdev calls SWITCHDEV_OBJ_ID_PORT_VLAN and
SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING.
Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
.../microchip/lan966x/lan966x_switchdev.c | 117 ++++++++++++++++++
1 file changed, 117 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
index 3f6d361ad65b..062b9fc80e7d 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -72,6 +72,11 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
lan966x_port_ageing_set(port, attr->u.ageing_time);
break;
+ case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
+ lan966x_vlan_port_set_vlan_aware(port, attr->u.vlan_filtering);
+ lan966x_vlan_port_apply(port);
+ lan966x_vlan_cpu_set_vlan_aware(port);
+ break;
default:
err = -EOPNOTSUPP;
break;
@@ -343,6 +348,112 @@ static int lan966x_switchdev_event(struct notifier_block *nb,
return NOTIFY_DONE;
}
+static int lan966x_handle_port_vlan_add(struct net_device *dev,
+ struct notifier_block *nb,
+ const struct switchdev_obj_port_vlan *v)
+{
+ struct lan966x_port *port;
+ struct lan966x *lan966x;
+
+ /* When adding a port to a vlan, we get a callback for the port but
+ * also for the bridge. When get the callback for the bridge just bail
+ * out. Then when the bridge is added to the vlan, then we get a
+ * callback here but in this case the flags has set:
+ * BRIDGE_VLAN_INFO_BRENTRY. In this case it means that the CPU
+ * port is added to the vlan, so the broadcast frames and unicast frames
+ * with dmac of the bridge should be foward to CPU.
+ */
+ if (netif_is_bridge_master(dev) &&
+ !(v->flags & BRIDGE_VLAN_INFO_BRENTRY))
+ return 0;
+
+ lan966x = container_of(nb, struct lan966x, switchdev_blocking_nb);
+
+ /* In case the port gets called */
+ if (!(netif_is_bridge_master(dev))) {
+ if (!lan966x_netdevice_check(dev))
+ return -EOPNOTSUPP;
+
+ port = netdev_priv(dev);
+ return lan966x_vlan_port_add_vlan(port, v->vid,
+ v->flags & BRIDGE_VLAN_INFO_PVID,
+ v->flags & BRIDGE_VLAN_INFO_UNTAGGED);
+ }
+
+ /* In case the bridge gets called */
+ if (netif_is_bridge_master(dev))
+ return lan966x_vlan_cpu_add_vlan(lan966x, dev, v->vid);
+
+ return 0;
+}
+
+static int lan966x_handle_port_obj_add(struct net_device *dev,
+ struct notifier_block *nb,
+ struct switchdev_notifier_port_obj_info *info)
+{
+ const struct switchdev_obj *obj = info->obj;
+ int err;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = lan966x_handle_port_vlan_add(dev, nb,
+ SWITCHDEV_OBJ_PORT_VLAN(obj));
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ info->handled = true;
+ return err;
+}
+
+static int lan966x_handle_port_vlan_del(struct net_device *dev,
+ struct notifier_block *nb,
+ const struct switchdev_obj_port_vlan *v)
+{
+ struct lan966x_port *port;
+ struct lan966x *lan966x;
+
+ lan966x = container_of(nb, struct lan966x, switchdev_blocking_nb);
+
+ /* In case the physical port gets called */
+ if (!netif_is_bridge_master(dev)) {
+ if (!lan966x_netdevice_check(dev))
+ return -EOPNOTSUPP;
+
+ port = netdev_priv(dev);
+ return lan966x_vlan_port_del_vlan(port, v->vid);
+ }
+
+ /* In case the bridge gets called */
+ if (netif_is_bridge_master(dev))
+ return lan966x_vlan_cpu_del_vlan(lan966x, dev, v->vid);
+
+ return 0;
+}
+
+static int lan966x_handle_port_obj_del(struct net_device *dev,
+ struct notifier_block *nb,
+ struct switchdev_notifier_port_obj_info *info)
+{
+ const struct switchdev_obj *obj = info->obj;
+ int err;
+
+ switch (obj->id) {
+ case SWITCHDEV_OBJ_ID_PORT_VLAN:
+ err = lan966x_handle_port_vlan_del(dev, nb,
+ SWITCHDEV_OBJ_PORT_VLAN(obj));
+ break;
+ default:
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ info->handled = true;
+ return err;
+}
+
static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
unsigned long event,
void *ptr)
@@ -351,6 +462,12 @@ static int lan966x_switchdev_blocking_event(struct notifier_block *nb,
int err;
switch (event) {
+ case SWITCHDEV_PORT_OBJ_ADD:
+ err = lan966x_handle_port_obj_add(dev, nb, ptr);
+ return notifier_from_errno(err);
+ case SWITCHDEV_PORT_OBJ_DEL:
+ err = lan966x_handle_port_obj_del(dev, nb, ptr);
+ return notifier_from_errno(err);
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
lan966x_netdevice_check,
--
2.33.0
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