1 files changed, 76 insertions, 0 deletions
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index f4097b900de1..181a44d0f1da 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -55,3 +55,79 @@ bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
 	return !skb->offload_fwd_mark ||
 	       BR_INPUT_SKB_CB(skb)->offload_fwd_mark != p->offload_fwd_mark;
 }
+
+/* Flags that can be offloaded to hardware */
+#define BR_PORT_FLAGS_HW_OFFLOAD (BR_LEARNING | BR_FLOOD | \
+				  BR_MCAST_FLOOD | BR_BCAST_FLOOD)
+
+int br_switchdev_set_port_flag(struct net_bridge_port *p,
+			       unsigned long flags,
+			       unsigned long mask)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+		.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
+	};
+	int err;
+
+	if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD)
+		return 0;
+
+	err = switchdev_port_attr_get(p->dev, &attr);
+	if (err == -EOPNOTSUPP)
+		return 0;
+	if (err)
+		return err;
+
+	/* Check if specific bridge flag attribute offload is supported */
+	if (!(attr.u.brport_flags_support & mask)) {
+		br_warn(p->br, "bridge flag offload is not supported %u(%s)\n",
+			(unsigned int)p->port_no, p->dev->name);
+		return -EOPNOTSUPP;
+	}
+
+	attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
+	attr.flags = SWITCHDEV_F_DEFER;
+	attr.u.brport_flags = flags;
+	err = switchdev_port_attr_set(p->dev, &attr);
+	if (err) {
+		br_warn(p->br, "error setting offload flag on port %u(%s)\n",
+			(unsigned int)p->port_no, p->dev->name);
+		return err;
+	}
+
+	return 0;
+}
+
+static void
+br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
+				u16 vid, struct net_device *dev)
+{
+	struct switchdev_notifier_fdb_info info;
+	unsigned long notifier_type;
+
+	info.addr = mac;
+	info.vid = vid;
+	notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
+	call_switchdev_notifiers(notifier_type, dev, &info.info);
+}
+
+void
+br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
+{
+	if (!fdb->added_by_user)
+		return;
+
+	switch (type) {
+	case RTM_DELNEIGH:
+		br_switchdev_fdb_call_notifiers(false, fdb->addr.addr,
+						fdb->vlan_id,
+						fdb->dst->dev);
+		break;
+	case RTM_NEWNEIGH:
+		br_switchdev_fdb_call_notifiers(true, fdb->addr.addr,
+						fdb->vlan_id,
+						fdb->dst->dev);
+		break;
+	}
+}