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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 int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
95 int (*eswitch_mode_set)(struct devlink *devlink, u16 mode);
96};
97
98static inline void *devlink_priv(struct devlink *devlink)
99{
100 BUG_ON(!devlink);
101 return &devlink->priv;
102}
103
104static inline struct devlink *priv_to_devlink(void *priv)
105{
106 BUG_ON(!priv);
107 return container_of(priv, struct devlink, priv);
108}
109
110struct ib_device;
111
112#if IS_ENABLED(CONFIG_NET_DEVLINK)
113
114struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
115int devlink_register(struct devlink *devlink, struct device *dev);
116void devlink_unregister(struct devlink *devlink);
117void devlink_free(struct devlink *devlink);
118int devlink_port_register(struct devlink *devlink,
119 struct devlink_port *devlink_port,
120 unsigned int port_index);
121void devlink_port_unregister(struct devlink_port *devlink_port);
122void devlink_port_type_eth_set(struct devlink_port *devlink_port,
123 struct net_device *netdev);
124void devlink_port_type_ib_set(struct devlink_port *devlink_port,
125 struct ib_device *ibdev);
126void devlink_port_type_clear(struct devlink_port *devlink_port);
127void devlink_port_split_set(struct devlink_port *devlink_port,
128 u32 split_group);
129int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
130 u32 size, u16 ingress_pools_count,
131 u16 egress_pools_count, u16 ingress_tc_count,
132 u16 egress_tc_count);
133void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
134
135#else
136
137static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
138 size_t priv_size)
139{
140 return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);
141}
142
143static inline int devlink_register(struct devlink *devlink, struct device *dev)
144{
145 return 0;
146}
147
148static inline void devlink_unregister(struct devlink *devlink)
149{
150}
151
152static inline void devlink_free(struct devlink *devlink)
153{
154 kfree(devlink);
155}
156
157static inline int devlink_port_register(struct devlink *devlink,
158 struct devlink_port *devlink_port,
159 unsigned int port_index)
160{
161 return 0;
162}
163
164static inline void devlink_port_unregister(struct devlink_port *devlink_port)
165{
166}
167
168static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,
169 struct net_device *netdev)
170{
171}
172
173static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,
174 struct ib_device *ibdev)
175{
176}
177
178static inline void devlink_port_type_clear(struct devlink_port *devlink_port)
179{
180}
181
182static inline void devlink_port_split_set(struct devlink_port *devlink_port,
183 u32 split_group)
184{
185}
186
187static inline int devlink_sb_register(struct devlink *devlink,
188 unsigned int sb_index, u32 size,
189 u16 ingress_pools_count,
190 u16 egress_pools_count,
191 u16 ingress_tc_count,
192 u16 egress_tc_count)
193{
194 return 0;
195}
196
197static inline void devlink_sb_unregister(struct devlink *devlink,
198 unsigned int sb_index)
199{
200}
201
202#endif
203
204#endif
205
