Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
eca9ebac PM |
2 | #ifndef _NET_GARP_H |
3 | #define _NET_GARP_H | |
4 | ||
5 | #include <net/stp.h> | |
6 | ||
7 | #define GARP_PROTOCOL_ID 0x1 | |
8 | #define GARP_END_MARK 0x0 | |
9 | ||
10 | struct garp_pdu_hdr { | |
11 | __be16 protocol; | |
12 | }; | |
13 | ||
14 | struct garp_msg_hdr { | |
15 | u8 attrtype; | |
16 | }; | |
17 | ||
18 | enum garp_attr_event { | |
19 | GARP_LEAVE_ALL, | |
20 | GARP_JOIN_EMPTY, | |
21 | GARP_JOIN_IN, | |
22 | GARP_LEAVE_EMPTY, | |
23 | GARP_LEAVE_IN, | |
24 | GARP_EMPTY, | |
25 | }; | |
26 | ||
27 | struct garp_attr_hdr { | |
28 | u8 len; | |
29 | u8 event; | |
30 | u8 data[]; | |
31 | }; | |
32 | ||
33 | struct garp_skb_cb { | |
34 | u8 cur_type; | |
35 | }; | |
36 | ||
37 | static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb) | |
38 | { | |
39 | BUILD_BUG_ON(sizeof(struct garp_skb_cb) > | |
c593642c | 40 | sizeof_field(struct sk_buff, cb)); |
eca9ebac PM |
41 | return (struct garp_skb_cb *)skb->cb; |
42 | } | |
43 | ||
44 | enum garp_applicant_state { | |
45 | GARP_APPLICANT_INVALID, | |
46 | GARP_APPLICANT_VA, | |
47 | GARP_APPLICANT_AA, | |
48 | GARP_APPLICANT_QA, | |
49 | GARP_APPLICANT_LA, | |
50 | GARP_APPLICANT_VP, | |
51 | GARP_APPLICANT_AP, | |
52 | GARP_APPLICANT_QP, | |
53 | GARP_APPLICANT_VO, | |
54 | GARP_APPLICANT_AO, | |
55 | GARP_APPLICANT_QO, | |
56 | __GARP_APPLICANT_MAX | |
57 | }; | |
58 | #define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1) | |
59 | ||
60 | enum garp_event { | |
61 | GARP_EVENT_REQ_JOIN, | |
62 | GARP_EVENT_REQ_LEAVE, | |
63 | GARP_EVENT_R_JOIN_IN, | |
64 | GARP_EVENT_R_JOIN_EMPTY, | |
65 | GARP_EVENT_R_EMPTY, | |
66 | GARP_EVENT_R_LEAVE_IN, | |
67 | GARP_EVENT_R_LEAVE_EMPTY, | |
68 | GARP_EVENT_TRANSMIT_PDU, | |
69 | __GARP_EVENT_MAX | |
70 | }; | |
71 | #define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1) | |
72 | ||
73 | enum garp_action { | |
74 | GARP_ACTION_NONE, | |
75 | GARP_ACTION_S_JOIN_IN, | |
76 | GARP_ACTION_S_LEAVE_EMPTY, | |
77 | }; | |
78 | ||
79 | struct garp_attr { | |
80 | struct rb_node node; | |
81 | enum garp_applicant_state state; | |
82 | u8 type; | |
83 | u8 dlen; | |
84 | unsigned char data[]; | |
85 | }; | |
86 | ||
87 | enum garp_applications { | |
70c03b49 | 88 | GARP_APPLICATION_GVRP, |
eca9ebac PM |
89 | __GARP_APPLICATION_MAX |
90 | }; | |
91 | #define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1) | |
92 | ||
93 | struct garp_application { | |
94 | enum garp_applications type; | |
95 | unsigned int maxattr; | |
96 | struct stp_proto proto; | |
97 | }; | |
98 | ||
99 | struct garp_applicant { | |
100 | struct garp_application *app; | |
101 | struct net_device *dev; | |
102 | struct timer_list join_timer; | |
103 | ||
104 | spinlock_t lock; | |
105 | struct sk_buff_head queue; | |
106 | struct sk_buff *pdu; | |
107 | struct rb_root gid; | |
f607a158 | 108 | struct rcu_head rcu; |
eca9ebac PM |
109 | }; |
110 | ||
111 | struct garp_port { | |
3cc77ec7 | 112 | struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1]; |
da37e368 | 113 | struct rcu_head rcu; |
eca9ebac PM |
114 | }; |
115 | ||
2008f21c JP |
116 | int garp_register_application(struct garp_application *app); |
117 | void garp_unregister_application(struct garp_application *app); | |
118 | ||
119 | int garp_init_applicant(struct net_device *dev, struct garp_application *app); | |
120 | void garp_uninit_applicant(struct net_device *dev, | |
121 | struct garp_application *app); | |
122 | ||
123 | int garp_request_join(const struct net_device *dev, | |
124 | const struct garp_application *app, const void *data, | |
125 | u8 len, u8 type); | |
126 | void garp_request_leave(const struct net_device *dev, | |
127 | const struct garp_application *app, | |
128 | const void *data, u8 len, u8 type); | |
eca9ebac PM |
129 | |
130 | #endif /* _NET_GARP_H */ |