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