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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 */ |
131 |
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