525 lines
15 KiB
C
525 lines
15 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* include/net/switchdev.h - Switch device API
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* Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
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* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
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*/
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#ifndef _LINUX_SWITCHDEV_H_
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#define _LINUX_SWITCHDEV_H_
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#include <linux/netdevice.h>
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#include <linux/notifier.h>
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#include <linux/list.h>
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#include <net/ip_fib.h>
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#define SWITCHDEV_F_NO_RECURSE BIT(0)
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#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
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#define SWITCHDEV_F_DEFER BIT(2)
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enum switchdev_attr_id {
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SWITCHDEV_ATTR_ID_UNDEFINED,
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SWITCHDEV_ATTR_ID_PORT_STP_STATE,
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SWITCHDEV_ATTR_ID_PORT_MST_STATE,
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SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
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SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
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SWITCHDEV_ATTR_ID_PORT_MROUTER,
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SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
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SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
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SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
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SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
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SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
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SWITCHDEV_ATTR_ID_BRIDGE_MST,
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SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
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SWITCHDEV_ATTR_ID_VLAN_MSTI,
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};
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struct switchdev_mst_state {
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u16 msti;
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u8 state;
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};
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struct switchdev_brport_flags {
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unsigned long val;
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unsigned long mask;
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};
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struct switchdev_vlan_msti {
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u16 vid;
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u16 msti;
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};
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struct switchdev_attr {
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struct net_device *orig_dev;
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enum switchdev_attr_id id;
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u32 flags;
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void *complete_priv;
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void (*complete)(struct net_device *dev, int err, void *priv);
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union {
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u8 stp_state; /* PORT_STP_STATE */
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struct switchdev_mst_state mst_state; /* PORT_MST_STATE */
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struct switchdev_brport_flags brport_flags; /* PORT_BRIDGE_FLAGS */
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bool mrouter; /* PORT_MROUTER */
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clock_t ageing_time; /* BRIDGE_AGEING_TIME */
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bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
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u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */
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bool mst; /* BRIDGE_MST */
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bool mc_disabled; /* MC_DISABLED */
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u8 mrp_port_role; /* MRP_PORT_ROLE */
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struct switchdev_vlan_msti vlan_msti; /* VLAN_MSTI */
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} u;
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};
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enum switchdev_obj_id {
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SWITCHDEV_OBJ_ID_UNDEFINED,
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SWITCHDEV_OBJ_ID_PORT_VLAN,
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SWITCHDEV_OBJ_ID_PORT_MDB,
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SWITCHDEV_OBJ_ID_HOST_MDB,
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SWITCHDEV_OBJ_ID_MRP,
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SWITCHDEV_OBJ_ID_RING_TEST_MRP,
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SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
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SWITCHDEV_OBJ_ID_RING_STATE_MRP,
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SWITCHDEV_OBJ_ID_IN_TEST_MRP,
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SWITCHDEV_OBJ_ID_IN_ROLE_MRP,
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SWITCHDEV_OBJ_ID_IN_STATE_MRP,
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};
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struct switchdev_obj {
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struct list_head list;
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struct net_device *orig_dev;
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enum switchdev_obj_id id;
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u32 flags;
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void *complete_priv;
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void (*complete)(struct net_device *dev, int err, void *priv);
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};
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/* SWITCHDEV_OBJ_ID_PORT_VLAN */
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struct switchdev_obj_port_vlan {
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struct switchdev_obj obj;
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u16 flags;
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u16 vid;
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/* If set, the notifier signifies a change of one of the following
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* flags for a VLAN that already exists:
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* - BRIDGE_VLAN_INFO_PVID
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* - BRIDGE_VLAN_INFO_UNTAGGED
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* Entries with BRIDGE_VLAN_INFO_BRENTRY unset are not notified at all.
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*/
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bool changed;
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};
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#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
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container_of((OBJ), struct switchdev_obj_port_vlan, obj)
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/* SWITCHDEV_OBJ_ID_PORT_MDB */
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struct switchdev_obj_port_mdb {
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struct switchdev_obj obj;
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unsigned char addr[ETH_ALEN];
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u16 vid;
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};
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#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
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container_of((OBJ), struct switchdev_obj_port_mdb, obj)
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/* SWITCHDEV_OBJ_ID_MRP */
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struct switchdev_obj_mrp {
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struct switchdev_obj obj;
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struct net_device *p_port;
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struct net_device *s_port;
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u32 ring_id;
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u16 prio;
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};
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#define SWITCHDEV_OBJ_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_mrp, obj)
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/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
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struct switchdev_obj_ring_test_mrp {
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struct switchdev_obj obj;
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/* The value is in us and a value of 0 represents to stop */
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u32 interval;
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u8 max_miss;
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u32 ring_id;
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u32 period;
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bool monitor;
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};
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#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
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/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
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struct switchdev_obj_ring_role_mrp {
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struct switchdev_obj obj;
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u8 ring_role;
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u32 ring_id;
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u8 sw_backup;
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};
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#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
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struct switchdev_obj_ring_state_mrp {
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struct switchdev_obj obj;
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u8 ring_state;
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u32 ring_id;
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};
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#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
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/* SWITCHDEV_OBJ_ID_IN_TEST_MRP */
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struct switchdev_obj_in_test_mrp {
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struct switchdev_obj obj;
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/* The value is in us and a value of 0 represents to stop */
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u32 interval;
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u32 in_id;
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u32 period;
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u8 max_miss;
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};
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#define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_in_test_mrp, obj)
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/* SWICHDEV_OBJ_ID_IN_ROLE_MRP */
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struct switchdev_obj_in_role_mrp {
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struct switchdev_obj obj;
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struct net_device *i_port;
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u32 ring_id;
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u16 in_id;
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u8 in_role;
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u8 sw_backup;
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};
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#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_in_role_mrp, obj)
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struct switchdev_obj_in_state_mrp {
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struct switchdev_obj obj;
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u32 in_id;
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u8 in_state;
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};
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#define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
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container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
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typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
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struct switchdev_brport {
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struct net_device *dev;
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const void *ctx;
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struct notifier_block *atomic_nb;
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struct notifier_block *blocking_nb;
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bool tx_fwd_offload;
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};
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enum switchdev_notifier_type {
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SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
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SWITCHDEV_FDB_DEL_TO_BRIDGE,
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SWITCHDEV_FDB_ADD_TO_DEVICE,
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SWITCHDEV_FDB_DEL_TO_DEVICE,
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SWITCHDEV_FDB_OFFLOADED,
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SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
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SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
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SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
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SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
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SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
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SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
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SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
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SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
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SWITCHDEV_VXLAN_FDB_OFFLOADED,
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SWITCHDEV_BRPORT_OFFLOADED,
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SWITCHDEV_BRPORT_UNOFFLOADED,
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};
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struct switchdev_notifier_info {
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struct net_device *dev;
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struct netlink_ext_ack *extack;
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const void *ctx;
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};
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/* Remember to update br_switchdev_fdb_populate() when adding
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* new members to this structure
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*/
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struct switchdev_notifier_fdb_info {
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struct switchdev_notifier_info info; /* must be first */
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const unsigned char *addr;
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u16 vid;
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u8 added_by_user:1,
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is_local:1,
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offloaded:1;
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};
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struct switchdev_notifier_port_obj_info {
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struct switchdev_notifier_info info; /* must be first */
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const struct switchdev_obj *obj;
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bool handled;
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};
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struct switchdev_notifier_port_attr_info {
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struct switchdev_notifier_info info; /* must be first */
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const struct switchdev_attr *attr;
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bool handled;
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};
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struct switchdev_notifier_brport_info {
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struct switchdev_notifier_info info; /* must be first */
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const struct switchdev_brport brport;
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};
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static inline struct net_device *
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switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
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{
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return info->dev;
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}
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static inline struct netlink_ext_ack *
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switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
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{
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return info->extack;
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}
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static inline bool
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switchdev_fdb_is_dynamically_learned(const struct switchdev_notifier_fdb_info *fdb_info)
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{
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return !fdb_info->added_by_user && !fdb_info->is_local;
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}
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#ifdef CONFIG_NET_SWITCHDEV
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int switchdev_bridge_port_offload(struct net_device *brport_dev,
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struct net_device *dev, const void *ctx,
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struct notifier_block *atomic_nb,
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struct notifier_block *blocking_nb,
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bool tx_fwd_offload,
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struct netlink_ext_ack *extack);
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void switchdev_bridge_port_unoffload(struct net_device *brport_dev,
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const void *ctx,
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struct notifier_block *atomic_nb,
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struct notifier_block *blocking_nb);
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void switchdev_deferred_process(void);
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int switchdev_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct netlink_ext_ack *extack);
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int switchdev_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct netlink_ext_ack *extack);
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int switchdev_port_obj_del(struct net_device *dev,
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const struct switchdev_obj *obj);
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int register_switchdev_notifier(struct notifier_block *nb);
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int unregister_switchdev_notifier(struct notifier_block *nb);
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int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
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struct switchdev_notifier_info *info,
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struct netlink_ext_ack *extack);
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int register_switchdev_blocking_notifier(struct notifier_block *nb);
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int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
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int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
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struct switchdev_notifier_info *info,
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struct netlink_ext_ack *extack);
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void switchdev_port_fwd_mark_set(struct net_device *dev,
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struct net_device *group_dev,
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bool joining);
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int switchdev_handle_fdb_event_to_device(struct net_device *dev, unsigned long event,
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const struct switchdev_notifier_fdb_info *fdb_info,
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bool (*check_cb)(const struct net_device *dev),
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bool (*foreign_dev_check_cb)(const struct net_device *dev,
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const struct net_device *foreign_dev),
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int (*mod_cb)(struct net_device *dev, struct net_device *orig_dev,
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unsigned long event, const void *ctx,
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const struct switchdev_notifier_fdb_info *fdb_info));
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int switchdev_handle_port_obj_add(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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int (*add_cb)(struct net_device *dev, const void *ctx,
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const struct switchdev_obj *obj,
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struct netlink_ext_ack *extack));
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int switchdev_handle_port_obj_add_foreign(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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bool (*foreign_dev_check_cb)(const struct net_device *dev,
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const struct net_device *foreign_dev),
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int (*add_cb)(struct net_device *dev, const void *ctx,
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const struct switchdev_obj *obj,
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struct netlink_ext_ack *extack));
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int switchdev_handle_port_obj_del(struct net_device *dev,
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|
|
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_ */
|