Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 247 insertions, 0 deletions

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
new file mode 100644
index 000000000..d574ce63b
--- /dev/null
+++ b/include/net/switchdev.h
@@ -0,0 +1,247 @@
+/*
+ * include/net/switchdev.h - Switch device API
+ * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
+ * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#ifndef _LINUX_SWITCHDEV_H_
+#define _LINUX_SWITCHDEV_H_
+
+#include <linux/netdevice.h>
+#include <linux/notifier.h>
+#include <linux/list.h>
+#include <net/ip_fib.h>
+
+#define SWITCHDEV_F_NO_RECURSE		BIT(0)
+#define SWITCHDEV_F_SKIP_EOPNOTSUPP	BIT(1)
+#define SWITCHDEV_F_DEFER		BIT(2)
+
+struct switchdev_trans_item {
+	struct list_head list;
+	void *data;
+	void (*destructor)(const void *data);
+};
+
+struct switchdev_trans {
+	struct list_head item_list;
+	bool ph_prepare;
+};
+
+static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
+{
+	return trans && trans->ph_prepare;
+}
+
+static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
+{
+	return trans && !trans->ph_prepare;
+}
+
+enum switchdev_attr_id {
+	SWITCHDEV_ATTR_ID_UNDEFINED,
+	SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
+	SWITCHDEV_ATTR_ID_PORT_STP_STATE,
+	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
+	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
+	SWITCHDEV_ATTR_ID_PORT_MROUTER,
+	SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
+	SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
+	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
+	SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+};
+
+struct switchdev_attr {
+	struct net_device *orig_dev;
+	enum switchdev_attr_id id;
+	u32 flags;
+	void *complete_priv;
+	void (*complete)(struct net_device *dev, int err, void *priv);
+	union {
+		struct netdev_phys_item_id ppid;	/* PORT_PARENT_ID */
+		u8 stp_state;				/* PORT_STP_STATE */
+		unsigned long brport_flags;		/* PORT_BRIDGE_FLAGS */
+		unsigned long brport_flags_support;	/* PORT_BRIDGE_FLAGS_SUPPORT */
+		bool mrouter;				/* PORT_MROUTER */
+		clock_t ageing_time;			/* BRIDGE_AGEING_TIME */
+		bool vlan_filtering;			/* BRIDGE_VLAN_FILTERING */
+		bool mc_disabled;			/* MC_DISABLED */
+	} u;
+};
+
+enum switchdev_obj_id {
+	SWITCHDEV_OBJ_ID_UNDEFINED,
+	SWITCHDEV_OBJ_ID_PORT_VLAN,
+	SWITCHDEV_OBJ_ID_PORT_MDB,
+	SWITCHDEV_OBJ_ID_HOST_MDB,
+};
+
+struct switchdev_obj {
+	struct net_device *orig_dev;
+	enum switchdev_obj_id id;
+	u32 flags;
+	void *complete_priv;
+	void (*complete)(struct net_device *dev, int err, void *priv);
+};
+
+/* SWITCHDEV_OBJ_ID_PORT_VLAN */
+struct switchdev_obj_port_vlan {
+	struct switchdev_obj obj;
+	u16 flags;
+	u16 vid_begin;
+	u16 vid_end;
+};
+
+#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
+	container_of(obj, struct switchdev_obj_port_vlan, obj)
+
+/* SWITCHDEV_OBJ_ID_PORT_MDB */
+struct switchdev_obj_port_mdb {
+	struct switchdev_obj obj;
+	unsigned char addr[ETH_ALEN];
+	u16 vid;
+};
+
+#define SWITCHDEV_OBJ_PORT_MDB(obj) \
+	container_of(obj, struct switchdev_obj_port_mdb, obj)
+
+void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
+				  void *data, void (*destructor)(void const *),
+				  struct switchdev_trans_item *tritem);
+void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
+
+typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
+
+/**
+ * struct switchdev_ops - switchdev operations
+ *
+ * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
+ *
+ * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
+ *
+ * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
+ *
+ * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
+ */
+struct switchdev_ops {
+	int	(*switchdev_port_attr_get)(struct net_device *dev,
+					   struct switchdev_attr *attr);
+	int	(*switchdev_port_attr_set)(struct net_device *dev,
+					   const struct switchdev_attr *attr,
+					   struct switchdev_trans *trans);
+	int	(*switchdev_port_obj_add)(struct net_device *dev,
+					  const struct switchdev_obj *obj,
+					  struct switchdev_trans *trans);
+	int	(*switchdev_port_obj_del)(struct net_device *dev,
+					  const struct switchdev_obj *obj);
+};
+
+enum switchdev_notifier_type {
+	SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
+	SWITCHDEV_FDB_DEL_TO_BRIDGE,
+	SWITCHDEV_FDB_ADD_TO_DEVICE,
+	SWITCHDEV_FDB_DEL_TO_DEVICE,
+	SWITCHDEV_FDB_OFFLOADED,
+};
+
+struct switchdev_notifier_info {
+	struct net_device *dev;
+};
+
+struct switchdev_notifier_fdb_info {
+	struct switchdev_notifier_info info; /* must be first */
+	const unsigned char *addr;
+	u16 vid;
+	bool added_by_user;
+};
+
+static inline struct net_device *
+switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
+{
+	return info->dev;
+}
+
+#ifdef CONFIG_NET_SWITCHDEV
+
+void switchdev_deferred_process(void);
+int switchdev_port_attr_get(struct net_device *dev,
+			    struct switchdev_attr *attr);
+int switchdev_port_attr_set(struct net_device *dev,
+			    const struct switchdev_attr *attr);
+int switchdev_port_obj_add(struct net_device *dev,
+			   const struct switchdev_obj *obj);
+int switchdev_port_obj_del(struct net_device *dev,
+			   const struct switchdev_obj *obj);
+int register_switchdev_notifier(struct notifier_block *nb);
+int unregister_switchdev_notifier(struct notifier_block *nb);
+int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
+			     struct switchdev_notifier_info *info);
+void switchdev_port_fwd_mark_set(struct net_device *dev,
+				 struct net_device *group_dev,
+				 bool joining);
+
+bool switchdev_port_same_parent_id(struct net_device *a,
+				   struct net_device *b);
+
+#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
+#else
+
+static inline void switchdev_deferred_process(void)
+{
+}
+
+static inline int switchdev_port_attr_get(struct net_device *dev,
+					  struct switchdev_attr *attr)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int switchdev_port_attr_set(struct net_device *dev,
+					  const struct switchdev_attr *attr)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int switchdev_port_obj_add(struct net_device *dev,
+					 const struct switchdev_obj *obj)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int switchdev_port_obj_del(struct net_device *dev,
+					 const struct switchdev_obj *obj)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int register_switchdev_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int unregister_switchdev_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int call_switchdev_notifiers(unsigned long val,
+					   struct net_device *dev,
+					   struct switchdev_notifier_info *info)
+{
+	return NOTIFY_DONE;
+}
+
+static inline bool switchdev_port_same_parent_id(struct net_device *a,
+						 struct net_device *b)
+{
+	return false;
+}
+
+#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
+
+#endif
+
+#endif /* _LINUX_SWITCHDEV_H_ */