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linux-next/include/net/switchdev.h
Vladimir Oltean 716a30a97a net: switchdev: merge switchdev_handle_fdb_{add,del}_to_device 
To reduce code churn, the same patch makes multiple changes, since they
all touch the same lines:

1. The implementations for these two are identical, just with different
   function pointers. Reduce duplications and name the function pointers
   "mod_cb" instead of "add_cb" and "del_cb". Pass the event as argument.

2. Drop the "const" attribute from "orig_dev". If the driver needs to
   check whether orig_dev belongs to itself and then
   call_switchdev_notifiers(orig_dev, SWITCHDEV_FDB_OFFLOADED), it
   can't, because call_switchdev_notifiers takes a non-const struct
   net_device *.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-27 14:54:02 +01:00

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/* 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_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_MRP_PORT_ROLE,
};
struct switchdev_brport_flags {
unsigned long val;
unsigned long mask;
};
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_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 mc_disabled; /* MC_DISABLED */
u8 mrp_port_role; /* MRP_PORT_ROLE */
} 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;
};
#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;
};
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 (*lag_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_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_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),
int (*lag_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_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_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_ */
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