Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 834d8add9e5fd51112f08cde966e0044604049cb (plain)
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
130
#ifndef _NET_GARP_H
#define _NET_GARP_H

#include <net/stp.h>

#define GARP_PROTOCOL_ID	0x1
#define GARP_END_MARK		0x0

struct garp_pdu_hdr {
	__be16	protocol;
};

struct garp_msg_hdr {
	u8	attrtype;
};

enum garp_attr_event {
	GARP_LEAVE_ALL,
	GARP_JOIN_EMPTY,
	GARP_JOIN_IN,
	GARP_LEAVE_EMPTY,
	GARP_LEAVE_IN,
	GARP_EMPTY,
};

struct garp_attr_hdr {
	u8	len;
	u8	event;
	u8	data[];
};

struct garp_skb_cb {
	u8	cur_type;
};

static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb)
{
	BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
		     FIELD_SIZEOF(struct sk_buff, cb));
	return (struct garp_skb_cb *)skb->cb;
}

enum garp_applicant_state {
	GARP_APPLICANT_INVALID,
	GARP_APPLICANT_VA,
	GARP_APPLICANT_AA,
	GARP_APPLICANT_QA,
	GARP_APPLICANT_LA,
	GARP_APPLICANT_VP,
	GARP_APPLICANT_AP,
	GARP_APPLICANT_QP,
	GARP_APPLICANT_VO,
	GARP_APPLICANT_AO,
	GARP_APPLICANT_QO,
	__GARP_APPLICANT_MAX
};
#define GARP_APPLICANT_MAX	(__GARP_APPLICANT_MAX - 1)

enum garp_event {
	GARP_EVENT_REQ_JOIN,
	GARP_EVENT_REQ_LEAVE,
	GARP_EVENT_R_JOIN_IN,
	GARP_EVENT_R_JOIN_EMPTY,
	GARP_EVENT_R_EMPTY,
	GARP_EVENT_R_LEAVE_IN,
	GARP_EVENT_R_LEAVE_EMPTY,
	GARP_EVENT_TRANSMIT_PDU,
	__GARP_EVENT_MAX
};
#define GARP_EVENT_MAX		(__GARP_EVENT_MAX - 1)

enum garp_action {
	GARP_ACTION_NONE,
	GARP_ACTION_S_JOIN_IN,
	GARP_ACTION_S_LEAVE_EMPTY,
};

struct garp_attr {
	struct rb_node			node;
	enum garp_applicant_state	state;
	u8				type;
	u8				dlen;
	unsigned char			data[];
};

enum garp_applications {
	GARP_APPLICATION_GVRP,
	__GARP_APPLICATION_MAX
};
#define GARP_APPLICATION_MAX	(__GARP_APPLICATION_MAX - 1)

struct garp_application {
	enum garp_applications	type;
	unsigned int		maxattr;
	struct stp_proto	proto;
};

struct garp_applicant {
	struct garp_application	*app;
	struct net_device	*dev;
	struct timer_list	join_timer;

	spinlock_t		lock;
	struct sk_buff_head	queue;
	struct sk_buff		*pdu;
	struct rb_root		gid;
	struct rcu_head		rcu;
};

struct garp_port {
	struct garp_applicant __rcu	*applicants[GARP_APPLICATION_MAX + 1];
	struct rcu_head			rcu;
};

extern int	garp_register_application(struct garp_application *app);
extern void	garp_unregister_application(struct garp_application *app);

extern int	garp_init_applicant(struct net_device *dev,
				    struct garp_application *app);
extern void	garp_uninit_applicant(struct net_device *dev,
				      struct garp_application *app);

extern int	garp_request_join(const struct net_device *dev,
				  const struct garp_application *app,
				  const void *data, u8 len, u8 type);
extern void	garp_request_leave(const struct net_device *dev,
				   const struct garp_application *app,
				   const void *data, u8 len, u8 type);

#endif /* _NET_GARP_H */