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bfcd3a46 JP |
1 | /* |
2 | * include/net/devlink.h - Network physical device Netlink interface | |
3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | #ifndef _NET_DEVLINK_H_ | |
12 | #define _NET_DEVLINK_H_ | |
13 | ||
14 | #include <linux/device.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/gfp.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/netdevice.h> | |
19 | #include <net/net_namespace.h> | |
20 | #include <uapi/linux/devlink.h> | |
21 | ||
22 | struct devlink_ops; | |
23 | ||
24 | struct devlink { | |
25 | struct list_head list; | |
26 | struct list_head port_list; | |
27 | const struct devlink_ops *ops; | |
28 | struct device *dev; | |
29 | possible_net_t _net; | |
30 | char priv[0] __aligned(NETDEV_ALIGN); | |
31 | }; | |
32 | ||
33 | struct devlink_port { | |
34 | struct list_head list; | |
35 | struct devlink *devlink; | |
36 | unsigned index; | |
37 | bool registered; | |
38 | enum devlink_port_type type; | |
39 | enum devlink_port_type desired_type; | |
40 | void *type_dev; | |
41 | bool split; | |
42 | u32 split_group; | |
43 | }; | |
44 | ||
45 | struct devlink_ops { | |
46 | size_t priv_size; | |
47 | int (*port_type_set)(struct devlink_port *devlink_port, | |
48 | enum devlink_port_type port_type); | |
49 | int (*port_split)(struct devlink *devlink, unsigned int port_index, | |
50 | unsigned int count); | |
51 | int (*port_unsplit)(struct devlink *devlink, unsigned int port_index); | |
52 | }; | |
53 | ||
54 | static inline void *devlink_priv(struct devlink *devlink) | |
55 | { | |
56 | BUG_ON(!devlink); | |
57 | return &devlink->priv; | |
58 | } | |
59 | ||
60 | static inline struct devlink *priv_to_devlink(void *priv) | |
61 | { | |
62 | BUG_ON(!priv); | |
63 | return container_of(priv, struct devlink, priv); | |
64 | } | |
65 | ||
66 | struct ib_device; | |
67 | ||
68 | #if IS_ENABLED(CONFIG_NET_DEVLINK) | |
69 | ||
70 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); | |
71 | int devlink_register(struct devlink *devlink, struct device *dev); | |
72 | void devlink_unregister(struct devlink *devlink); | |
73 | void devlink_free(struct devlink *devlink); | |
74 | int devlink_port_register(struct devlink *devlink, | |
75 | struct devlink_port *devlink_port, | |
76 | unsigned int port_index); | |
77 | void devlink_port_unregister(struct devlink_port *devlink_port); | |
78 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
79 | struct net_device *netdev); | |
80 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
81 | struct ib_device *ibdev); | |
82 | void devlink_port_type_clear(struct devlink_port *devlink_port); | |
83 | void devlink_port_split_set(struct devlink_port *devlink_port, | |
84 | u32 split_group); | |
85 | ||
86 | #else | |
87 | ||
88 | static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, | |
89 | size_t priv_size) | |
90 | { | |
91 | return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL); | |
92 | } | |
93 | ||
94 | static inline int devlink_register(struct devlink *devlink, struct device *dev) | |
95 | { | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static inline void devlink_unregister(struct devlink *devlink) | |
100 | { | |
101 | } | |
102 | ||
103 | static inline void devlink_free(struct devlink *devlink) | |
104 | { | |
105 | kfree(devlink); | |
106 | } | |
107 | ||
108 | static inline int devlink_port_register(struct devlink *devlink, | |
109 | struct devlink_port *devlink_port, | |
110 | unsigned int port_index) | |
111 | { | |
112 | return 0; | |
113 | } | |
114 | ||
115 | static inline void devlink_port_unregister(struct devlink_port *devlink_port) | |
116 | { | |
117 | } | |
118 | ||
119 | static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
120 | struct net_device *netdev) | |
121 | { | |
122 | } | |
123 | ||
124 | static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
125 | struct ib_device *ibdev) | |
126 | { | |
127 | } | |
128 | ||
129 | static inline void devlink_port_type_clear(struct devlink_port *devlink_port) | |
130 | { | |
131 | } | |
132 | ||
133 | static inline void devlink_port_split_set(struct devlink_port *devlink_port, | |
134 | u32 split_group) | |
135 | { | |
136 | } | |
137 | ||
138 | #endif | |
139 | ||
140 | #endif /* _NET_DEVLINK_H_ */ |