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
17 struct mctp_sk_key;
18
19 struct mctp_dev {
20 struct net_device *dev;
21
22 refcount_t refs;
23
24 unsigned int net;
25
26 const struct mctp_netdev_ops *ops;
27
28 /* Only modified under RTNL. Reads have addrs_lock held */
29 u8 *addrs;
30 size_t num_addrs;
31 spinlock_t addrs_lock;
32
33 struct rcu_head rcu;
34 };
35
36 struct mctp_netdev_ops {
37 void (*release_flow)(struct mctp_dev *dev,
38 struct mctp_sk_key *key);
39 };
40
41 #define MCTP_INITIAL_DEFAULT_NET 1
42
43 struct mctp_dev *mctp_dev_get_rtnl(const struct net_device *dev);
44 struct mctp_dev *__mctp_dev_get(const struct net_device *dev);
45
46 int mctp_register_netdev(struct net_device *dev,
47 const struct mctp_netdev_ops *ops);
48 void mctp_unregister_netdev(struct net_device *dev);
49
50 void mctp_dev_hold(struct mctp_dev *mdev);
51 void mctp_dev_put(struct mctp_dev *mdev);
52
53 void mctp_dev_set_key(struct mctp_dev *dev, struct mctp_sk_key *key);
54 void mctp_dev_release_key(struct mctp_dev *dev, struct mctp_sk_key *key);
55
56 #endif /* __NET_MCTPDEVICE_H */
57
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.