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-rw-r--r--include/net/switchdev.h524
1 files changed, 524 insertions, 0 deletions
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
new file mode 100644
index 000000000..7dcdc97c0
--- /dev/null
+++ b/include/net/switchdev.h
@@ -0,0 +1,524 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * 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>
+ */
+#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)
+
+enum switchdev_attr_id {
+ SWITCHDEV_ATTR_ID_UNDEFINED,
+ SWITCHDEV_ATTR_ID_PORT_STP_STATE,
+ SWITCHDEV_ATTR_ID_PORT_MST_STATE,
+ SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
+ SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
+ SWITCHDEV_ATTR_ID_PORT_MROUTER,
+ SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
+ SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
+ SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
+ SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
+ SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+ SWITCHDEV_ATTR_ID_BRIDGE_MST,
+ SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
+ SWITCHDEV_ATTR_ID_VLAN_MSTI,
+};
+
+struct switchdev_mst_state {
+ u16 msti;
+ u8 state;
+};
+
+struct switchdev_brport_flags {
+ unsigned long val;
+ unsigned long mask;
+};
+
+struct switchdev_vlan_msti {
+ u16 vid;
+ u16 msti;
+};
+
+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 {
+ u8 stp_state; /* PORT_STP_STATE */
+ struct switchdev_mst_state mst_state; /* PORT_MST_STATE */
+ struct switchdev_brport_flags brport_flags; /* PORT_BRIDGE_FLAGS */
+ bool mrouter; /* PORT_MROUTER */
+ clock_t ageing_time; /* BRIDGE_AGEING_TIME */
+ bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
+ u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */
+ bool mst; /* BRIDGE_MST */
+ bool mc_disabled; /* MC_DISABLED */
+ u8 mrp_port_role; /* MRP_PORT_ROLE */
+ struct switchdev_vlan_msti vlan_msti; /* VLAN_MSTI */
+ } u;
+};
+
+enum switchdev_obj_id {
+ SWITCHDEV_OBJ_ID_UNDEFINED,
+ SWITCHDEV_OBJ_ID_PORT_VLAN,
+ SWITCHDEV_OBJ_ID_PORT_MDB,
+ SWITCHDEV_OBJ_ID_HOST_MDB,
+ SWITCHDEV_OBJ_ID_MRP,
+ SWITCHDEV_OBJ_ID_RING_TEST_MRP,
+ SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
+ SWITCHDEV_OBJ_ID_RING_STATE_MRP,
+ SWITCHDEV_OBJ_ID_IN_TEST_MRP,
+ SWITCHDEV_OBJ_ID_IN_ROLE_MRP,
+ SWITCHDEV_OBJ_ID_IN_STATE_MRP,
+};
+
+struct switchdev_obj {
+ struct list_head list;
+ 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;
+ /* If set, the notifier signifies a change of one of the following
+ * flags for a VLAN that already exists:
+ * - BRIDGE_VLAN_INFO_PVID
+ * - BRIDGE_VLAN_INFO_UNTAGGED
+ * Entries with BRIDGE_VLAN_INFO_BRENTRY unset are not notified at all.
+ */
+ bool changed;
+};
+
+#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)
+
+
+/* SWITCHDEV_OBJ_ID_MRP */
+struct switchdev_obj_mrp {
+ struct switchdev_obj obj;
+ struct net_device *p_port;
+ struct net_device *s_port;
+ u32 ring_id;
+ u16 prio;
+};
+
+#define SWITCHDEV_OBJ_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_mrp, obj)
+
+/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
+struct switchdev_obj_ring_test_mrp {
+ struct switchdev_obj obj;
+ /* The value is in us and a value of 0 represents to stop */
+ u32 interval;
+ u8 max_miss;
+ u32 ring_id;
+ u32 period;
+ bool monitor;
+};
+
+#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
+
+/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
+struct switchdev_obj_ring_role_mrp {
+ struct switchdev_obj obj;
+ u8 ring_role;
+ u32 ring_id;
+ u8 sw_backup;
+};
+
+#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
+
+struct switchdev_obj_ring_state_mrp {
+ struct switchdev_obj obj;
+ u8 ring_state;
+ u32 ring_id;
+};
+
+#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
+
+/* SWITCHDEV_OBJ_ID_IN_TEST_MRP */
+struct switchdev_obj_in_test_mrp {
+ struct switchdev_obj obj;
+ /* The value is in us and a value of 0 represents to stop */
+ u32 interval;
+ u32 in_id;
+ u32 period;
+ u8 max_miss;
+};
+
+#define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_in_test_mrp, obj)
+
+/* SWICHDEV_OBJ_ID_IN_ROLE_MRP */
+struct switchdev_obj_in_role_mrp {
+ struct switchdev_obj obj;
+ struct net_device *i_port;
+ u32 ring_id;
+ u16 in_id;
+ u8 in_role;
+ u8 sw_backup;
+};
+
+#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_in_role_mrp, obj)
+
+struct switchdev_obj_in_state_mrp {
+ struct switchdev_obj obj;
+ u32 in_id;
+ u8 in_state;
+};
+
+#define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
+ container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
+
+typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
+
+struct switchdev_brport {
+ struct net_device *dev;
+ const void *ctx;
+ struct notifier_block *atomic_nb;
+ struct notifier_block *blocking_nb;
+ bool tx_fwd_offload;
+};
+
+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,
+ SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
+
+ SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
+ SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
+ SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
+
+ SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
+ SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
+ SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
+ SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
+ SWITCHDEV_VXLAN_FDB_OFFLOADED,
+
+ SWITCHDEV_BRPORT_OFFLOADED,
+ SWITCHDEV_BRPORT_UNOFFLOADED,
+};
+
+struct switchdev_notifier_info {
+ struct net_device *dev;
+ struct netlink_ext_ack *extack;
+ const void *ctx;
+};
+
+/* Remember to update br_switchdev_fdb_populate() when adding
+ * new members to this structure
+ */
+struct switchdev_notifier_fdb_info {
+ struct switchdev_notifier_info info; /* must be first */
+ const unsigned char *addr;
+ u16 vid;
+ u8 added_by_user:1,
+ is_local:1,
+ offloaded:1;
+};
+
+struct switchdev_notifier_port_obj_info {
+ struct switchdev_notifier_info info; /* must be first */
+ const struct switchdev_obj *obj;
+ bool handled;
+};
+
+struct switchdev_notifier_port_attr_info {
+ struct switchdev_notifier_info info; /* must be first */
+ const struct switchdev_attr *attr;
+ bool handled;
+};
+
+struct switchdev_notifier_brport_info {
+ struct switchdev_notifier_info info; /* must be first */
+ const struct switchdev_brport brport;
+};
+
+static inline struct net_device *
+switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
+{
+ return info->dev;
+}
+
+static inline struct netlink_ext_ack *
+switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
+{
+ return info->extack;
+}
+
+static inline bool
+switchdev_fdb_is_dynamically_learned(const struct switchdev_notifier_fdb_info *fdb_info)
+{
+ return !fdb_info->added_by_user && !fdb_info->is_local;
+}
+
+#ifdef CONFIG_NET_SWITCHDEV
+
+int switchdev_bridge_port_offload(struct net_device *brport_dev,
+ struct net_device *dev, const void *ctx,
+ struct notifier_block *atomic_nb,
+ struct notifier_block *blocking_nb,
+ bool tx_fwd_offload,
+ struct netlink_ext_ack *extack);
+void switchdev_bridge_port_unoffload(struct net_device *brport_dev,
+ const void *ctx,
+ struct notifier_block *atomic_nb,
+ struct notifier_block *blocking_nb);
+
+void switchdev_deferred_process(void);
+int switchdev_port_attr_set(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct netlink_ext_ack *extack);
+int switchdev_port_obj_add(struct net_device *dev,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack);
+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,
+ struct netlink_ext_ack *extack);
+
+int register_switchdev_blocking_notifier(struct notifier_block *nb);
+int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
+int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
+ struct switchdev_notifier_info *info,
+ struct netlink_ext_ack *extack);
+
+void switchdev_port_fwd_mark_set(struct net_device *dev,
+ struct net_device *group_dev,
+ bool joining);
+
+int switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev,
+ unsigned long event, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info));
+
+int switchdev_handle_port_obj_add(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*add_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack));
+int switchdev_handle_port_obj_add_foreign(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*add_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack));
+int switchdev_handle_port_obj_del(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*del_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj));
+int switchdev_handle_port_obj_del_foreign(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*del_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj));
+
+int switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_attr *attr,
+ struct netlink_ext_ack *extack));
+#else
+
+static inline int
+switchdev_bridge_port_offload(struct net_device *brport_dev,
+ struct net_device *dev, const void *ctx,
+ struct notifier_block *atomic_nb,
+ struct notifier_block *blocking_nb,
+ bool tx_fwd_offload,
+ struct netlink_ext_ack *extack)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void
+switchdev_bridge_port_unoffload(struct net_device *brport_dev,
+ const void *ctx,
+ struct notifier_block *atomic_nb,
+ struct notifier_block *blocking_nb)
+{
+}
+
+static inline void switchdev_deferred_process(void)
+{
+}
+
+static inline int switchdev_port_attr_set(struct net_device *dev,
+ const struct switchdev_attr *attr,
+ struct netlink_ext_ack *extack)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int switchdev_port_obj_add(struct net_device *dev,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack)
+{
+ 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,
+ struct netlink_ext_ack *extack)
+{
+ return NOTIFY_DONE;
+}
+
+static inline int
+register_switchdev_blocking_notifier(struct notifier_block *nb)
+{
+ return 0;
+}
+
+static inline int
+unregister_switchdev_blocking_notifier(struct notifier_block *nb)
+{
+ return 0;
+}
+
+static inline int
+call_switchdev_blocking_notifiers(unsigned long val,
+ struct net_device *dev,
+ struct switchdev_notifier_info *info,
+ struct netlink_ext_ack *extack)
+{
+ return NOTIFY_DONE;
+}
+
+static inline int
+switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event,
+ const struct switchdev_notifier_fdb_info *fdb_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev,
+ unsigned long event, const void *ctx,
+ const struct switchdev_notifier_fdb_info *fdb_info))
+{
+ return 0;
+}
+
+static inline int
+switchdev_handle_port_obj_add(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*add_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack))
+{
+ return 0;
+}
+
+static inline int switchdev_handle_port_obj_add_foreign(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*add_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj,
+ struct netlink_ext_ack *extack))
+{
+ return 0;
+}
+
+static inline int
+switchdev_handle_port_obj_del(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*del_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj))
+{
+ return 0;
+}
+
+static inline int
+switchdev_handle_port_obj_del_foreign(struct net_device *dev,
+ struct switchdev_notifier_port_obj_info *port_obj_info,
+ bool (*check_cb)(const struct net_device *dev),
+ bool (*foreign_dev_check_cb)(const struct net_device *dev,
+ const struct net_device *foreign_dev),
+ int (*del_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_obj *obj))
+{
+ return 0;
+}
+
+static inline int
+switchdev_handle_port_attr_set(struct net_device *dev,
+ struct switchdev_notifier_port_attr_info *port_attr_info,
+ bool (*check_cb)(const struct net_device *dev),
+ int (*set_cb)(struct net_device *dev, const void *ctx,
+ const struct switchdev_attr *attr,
+ struct netlink_ext_ack *extack))
+{
+ return 0;
+}
+#endif
+
+#endif /* _LINUX_SWITCHDEV_H_ */