irq_domain: Move irq_virq_count into NOMAP revmap
[linux-2.6.git] / include / net / garp.h
1 #ifndef _NET_GARP_H
2 #define _NET_GARP_H
3
4 #include <net/stp.h>
5
6 #define GARP_PROTOCOL_ID        0x1
7 #define GARP_END_MARK           0x0
8
9 struct garp_pdu_hdr {
10         __be16  protocol;
11 };
12
13 struct garp_msg_hdr {
14         u8      attrtype;
15 };
16
17 enum garp_attr_event {
18         GARP_LEAVE_ALL,
19         GARP_JOIN_EMPTY,
20         GARP_JOIN_IN,
21         GARP_LEAVE_EMPTY,
22         GARP_LEAVE_IN,
23         GARP_EMPTY,
24 };
25
26 struct garp_attr_hdr {
27         u8      len;
28         u8      event;
29         u8      data[];
30 };
31
32 struct garp_skb_cb {
33         u8      cur_type;
34 };
35
36 static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb)
37 {
38         BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
39                      FIELD_SIZEOF(struct sk_buff, cb));
40         return (struct garp_skb_cb *)skb->cb;
41 }
42
43 enum garp_applicant_state {
44         GARP_APPLICANT_INVALID,
45         GARP_APPLICANT_VA,
46         GARP_APPLICANT_AA,
47         GARP_APPLICANT_QA,
48         GARP_APPLICANT_LA,
49         GARP_APPLICANT_VP,
50         GARP_APPLICANT_AP,
51         GARP_APPLICANT_QP,
52         GARP_APPLICANT_VO,
53         GARP_APPLICANT_AO,
54         GARP_APPLICANT_QO,
55         __GARP_APPLICANT_MAX
56 };
57 #define GARP_APPLICANT_MAX      (__GARP_APPLICANT_MAX - 1)
58
59 enum garp_event {
60         GARP_EVENT_REQ_JOIN,
61         GARP_EVENT_REQ_LEAVE,
62         GARP_EVENT_R_JOIN_IN,
63         GARP_EVENT_R_JOIN_EMPTY,
64         GARP_EVENT_R_EMPTY,
65         GARP_EVENT_R_LEAVE_IN,
66         GARP_EVENT_R_LEAVE_EMPTY,
67         GARP_EVENT_TRANSMIT_PDU,
68         __GARP_EVENT_MAX
69 };
70 #define GARP_EVENT_MAX          (__GARP_EVENT_MAX - 1)
71
72 enum garp_action {
73         GARP_ACTION_NONE,
74         GARP_ACTION_S_JOIN_IN,
75         GARP_ACTION_S_LEAVE_EMPTY,
76 };
77
78 struct garp_attr {
79         struct rb_node                  node;
80         enum garp_applicant_state       state;
81         u8                              type;
82         u8                              dlen;
83         unsigned char                   data[];
84 };
85
86 enum garp_applications {
87         GARP_APPLICATION_GVRP,
88         __GARP_APPLICATION_MAX
89 };
90 #define GARP_APPLICATION_MAX    (__GARP_APPLICATION_MAX - 1)
91
92 struct garp_application {
93         enum garp_applications  type;
94         unsigned int            maxattr;
95         struct stp_proto        proto;
96 };
97
98 struct garp_applicant {
99         struct garp_application *app;
100         struct net_device       *dev;
101         struct timer_list       join_timer;
102
103         spinlock_t              lock;
104         struct sk_buff_head     queue;
105         struct sk_buff          *pdu;
106         struct rb_root          gid;
107         struct rcu_head         rcu;
108 };
109
110 struct garp_port {
111         struct garp_applicant __rcu     *applicants[GARP_APPLICATION_MAX + 1];
112         struct rcu_head                 rcu;
113 };
114
115 extern int      garp_register_application(struct garp_application *app);
116 extern void     garp_unregister_application(struct garp_application *app);
117
118 extern int      garp_init_applicant(struct net_device *dev,
119                                     struct garp_application *app);
120 extern void     garp_uninit_applicant(struct net_device *dev,
121                                       struct garp_application *app);
122
123 extern int      garp_request_join(const struct net_device *dev,
124                                   const struct garp_application *app,
125                                   const void *data, u8 len, u8 type);
126 extern void     garp_request_leave(const struct net_device *dev,
127                                    const struct garp_application *app,
128                                    const void *data, u8 len, u8 type);
129
130 #endif /* _NET_GARP_H */