Linux kernel mirror (for testing)
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linux
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
22struct devlink_ops;
23
24struct devlink {
25 struct list_head list;
26 struct list_head port_list;
27 struct list_head sb_list;
28 const struct devlink_ops *ops;
29 struct device *dev;
30 possible_net_t _net;
31 char priv[0] __aligned(NETDEV_ALIGN);
32};
33
34struct devlink_port {
35 struct list_head list;
36 struct devlink *devlink;
37 unsigned index;
38 bool registered;
39 enum devlink_port_type type;
40 enum devlink_port_type desired_type;
41 void *type_dev;
42 bool split;
43 u32 split_group;
44};
45
46struct devlink_sb_pool_info {
47 enum devlink_sb_pool_type pool_type;
48 u32 size;
49 enum devlink_sb_threshold_type threshold_type;
50};
51
52struct devlink_ops {
53 size_t priv_size;
54 int (*port_type_set)(struct devlink_port *devlink_port,
55 enum devlink_port_type port_type);
56 int (*port_split)(struct devlink *devlink, unsigned int port_index,
57 unsigned int count);
58 int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);
59 int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
60 u16 pool_index,
61 struct devlink_sb_pool_info *pool_info);
62 int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
63 u16 pool_index, u32 size,
64 enum devlink_sb_threshold_type threshold_type);
65 int (*sb_port_pool_get)(struct devlink_port *devlink_port,
66 unsigned int sb_index, u16 pool_index,
67 u32 *p_threshold);
68 int (*sb_port_pool_set)(struct devlink_port *devlink_port,
69 unsigned int sb_index, u16 pool_index,
70 u32 threshold);
71 int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
72 unsigned int sb_index,
73 u16 tc_index,
74 enum devlink_sb_pool_type pool_type,
75 u16 *p_pool_index, u32 *p_threshold);
76 int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
77 unsigned int sb_index,
78 u16 tc_index,
79 enum devlink_sb_pool_type pool_type,
80 u16 pool_index, u32 threshold);
81 int (*sb_occ_snapshot)(struct devlink *devlink,
82 unsigned int sb_index);
83 int (*sb_occ_max_clear)(struct devlink *devlink,
84 unsigned int sb_index);
85 int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
86 unsigned int sb_index, u16 pool_index,
87 u32 *p_cur, u32 *p_max);
88 int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
89 unsigned int sb_index,
90 u16 tc_index,
91 enum devlink_sb_pool_type pool_type,
92 u32 *p_cur, u32 *p_max);
93};
94
95static inline void *devlink_priv(struct devlink *devlink)
96{
97 BUG_ON(!devlink);
98 return &devlink->priv;
99}
100
101static inline struct devlink *priv_to_devlink(void *priv)
102{
103 BUG_ON(!priv);
104 return container_of(priv, struct devlink, priv);
105}
106
107struct ib_device;
108
109#if IS_ENABLED(CONFIG_NET_DEVLINK)
110
111struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
112int devlink_register(struct devlink *devlink, struct device *dev);
113void devlink_unregister(struct devlink *devlink);
114void devlink_free(struct devlink *devlink);
115int devlink_port_register(struct devlink *devlink,
116 struct devlink_port *devlink_port,
117 unsigned int port_index);
118void devlink_port_unregister(struct devlink_port *devlink_port);
119void devlink_port_type_eth_set(struct devlink_port *devlink_port,
120 struct net_device *netdev);
121void devlink_port_type_ib_set(struct devlink_port *devlink_port,
122 struct ib_device *ibdev);
123void devlink_port_type_clear(struct devlink_port *devlink_port);
124void devlink_port_split_set(struct devlink_port *devlink_port,
125 u32 split_group);
126int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
127 u32 size, u16 ingress_pools_count,
128 u16 egress_pools_count, u16 ingress_tc_count,
129 u16 egress_tc_count);
130void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
131
132#else
133
134static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
135 size_t priv_size)
136{
137 return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);
138}
139
140static inline int devlink_register(struct devlink *devlink, struct device *dev)
141{
142 return 0;
143}
144
145static inline void devlink_unregister(struct devlink *devlink)
146{
147}
148
149static inline void devlink_free(struct devlink *devlink)
150{
151 kfree(devlink);
152}
153
154static inline int devlink_port_register(struct devlink *devlink,
155 struct devlink_port *devlink_port,
156 unsigned int port_index)
157{
158 return 0;
159}
160
161static inline void devlink_port_unregister(struct devlink_port *devlink_port)
162{
163}
164
165static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,
166 struct net_device *netdev)
167{
168}
169
170static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,
171 struct ib_device *ibdev)
172{
173}
174
175static inline void devlink_port_type_clear(struct devlink_port *devlink_port)
176{
177}
178
179static inline void devlink_port_split_set(struct devlink_port *devlink_port,
180 u32 split_group)
181{
182}
183
184static inline int devlink_sb_register(struct devlink *devlink,
185 unsigned int sb_index, u32 size,
186 u16 ingress_pools_count,
187 u16 egress_pools_count,
188 u16 ingress_tc_count,
189 u16 egress_tc_count)
190{
191 return 0;
192}
193
194static inline void devlink_sb_unregister(struct devlink *devlink,
195 unsigned int sb_index)
196{
197}
198
199#endif
200
201#endif /* _NET_DEVLINK_H_ */