1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
#ifndef __LL_H
#define __LL_H
#include <libubox/avl.h>
#include <netinet/in.h>
struct device;
struct device_hotplug_ops;
typedef int (*device_state_cb)(struct device *, bool up);
enum {
DEV_ATTR_TYPE,
DEV_ATTR_NAME,
DEV_ATTR_IFNAME,
DEV_ATTR_MTU,
DEV_ATTR_MACADDR,
DEV_ATTR_TXQUEUELEN,
__DEV_ATTR_MAX,
};
struct device_type {
struct list_head list;
const char *name;
const struct config_param_list *config_params;
struct device *(*create)(struct blob_attr *attr);
void (*dump_status)(struct device *, struct blob_buf *buf);
int (*check_state)(struct device *);
void (*free)(struct device *);
};
enum {
DEV_OPT_MTU = (1 << 0),
DEV_OPT_MACADDR = (1 << 1),
DEV_OPT_TXQUEUELEN = (1 << 2)
};
/*
* link layer device. typically represents a linux network device.
* can be used to support VLANs as well
*/
struct device {
const struct device_type *type;
struct avl_node avl;
struct list_head users;
char ifname[IFNAMSIZ + 1];
int ifindex;
bool present;
int active;
/* set interface up or down */
device_state_cb set_state;
const struct device_hotplug_ops *hotplug_ops;
/* settings */
unsigned int flags;
unsigned int mtu;
unsigned int txqueuelen;
uint8_t macaddr[6];
uint32_t config_hash;
};
/* events broadcasted to all users of a device */
enum device_event {
DEV_EVENT_ADD,
DEV_EVENT_REMOVE,
DEV_EVENT_SETUP,
DEV_EVENT_TEARDOWN,
DEV_EVENT_UP,
DEV_EVENT_DOWN,
DEV_EVENT_LINK_UP,
DEV_EVENT_LINK_DOWN,
};
/*
* device dependency with callbacks
*/
struct device_user {
struct list_head list;
bool claimed;
struct device *dev;
void (*cb)(struct device_user *, enum device_event);
};
struct device_hotplug_ops {
int (*add)(struct device *main, struct device *member);
int (*del)(struct device *main, struct device *member);
};
extern const struct config_param_list device_attr_list;
extern const struct device_type simple_device_type;
extern const struct device_type bridge_device_type;
void device_init_settings(struct device *dev, struct blob_attr **tb);
void device_init_virtual(struct device *dev, const struct device_type *type, const char *name);
int device_init(struct device *iface, const struct device_type *type, const char *ifname);
void device_cleanup(struct device *iface);
struct device *device_get(const char *name, bool create);
void device_add_user(struct device_user *dep, struct device *iface);
void device_remove_user(struct device_user *dep);
void device_set_present(struct device *dev, bool state);
int device_claim(struct device_user *dep);
void device_release(struct device_user *dep);
int check_device_state(struct device *dev);
static inline void
device_free(struct device *dev)
{
dev->type->free(dev);
}
void device_free_unused(struct device *dev);
struct device *get_vlan_device_chain(const char *ifname, bool create);
#endif
|
