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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Management Component Transport Protocol (MCTP) - device
4 * definitions.
5 *
6 * Copyright (c) 2021 Code Construct
7 * Copyright (c) 2021 Google
8 */
9
10#ifndef __NET_MCTPDEVICE_H
11#define __NET_MCTPDEVICE_H
12
13#include <linux/list.h>
14#include <linux/types.h>
15#include <linux/refcount.h>
16
17struct mctp_sk_key;
18
19struct mctp_dev {
20 struct net_device *dev;
21
22 refcount_t refs;
23
24 unsigned int net;
25 enum mctp_phys_binding binding;
26
27 const struct mctp_netdev_ops *ops;
28
29 /* Only modified under RTNL. Reads have addrs_lock held */
30 u8 *addrs;
31 size_t num_addrs;
32 spinlock_t addrs_lock;
33
34 struct rcu_head rcu;
35};
36
37struct mctp_netdev_ops {
38 void (*release_flow)(struct mctp_dev *dev,
39 struct mctp_sk_key *key);
40};
41
42#define MCTP_INITIAL_DEFAULT_NET 1
43
44struct mctp_dev *mctp_dev_get_rtnl(const struct net_device *dev);
45struct mctp_dev *__mctp_dev_get(const struct net_device *dev);
46
47int mctp_register_netdev(struct net_device *dev,
48 const struct mctp_netdev_ops *ops,
49 enum mctp_phys_binding binding);
50void mctp_unregister_netdev(struct net_device *dev);
51
52void mctp_dev_hold(struct mctp_dev *mdev);
53void mctp_dev_put(struct mctp_dev *mdev);
54
55void mctp_dev_set_key(struct mctp_dev *dev, struct mctp_sk_key *key);
56void mctp_dev_release_key(struct mctp_dev *dev, struct mctp_sk_key *key);
57
58#endif /* __NET_MCTPDEVICE_H */