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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
9struct garp_pdu_hdr {
10 __be16 protocol;
11};
12
13struct garp_msg_hdr {
14 u8 attrtype;
15};
16
17enum 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
26struct garp_attr_hdr {
27 u8 len;
28 u8 event;
29 u8 data[];
30};
31
32struct garp_skb_cb {
33 u8 cur_type;
34};
35
36static 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
43enum 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
59enum 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
72enum garp_action {
73 GARP_ACTION_NONE,
74 GARP_ACTION_S_JOIN_IN,
75 GARP_ACTION_S_LEAVE_EMPTY,
76};
77
78struct 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
86enum garp_applications {
87 GARP_APPLICATION_GVRP,
88 __GARP_APPLICATION_MAX
89};
90#define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
91
92struct garp_application {
93 enum garp_applications type;
94 unsigned int maxattr;
95 struct stp_proto proto;
96};
97
98struct 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
110struct garp_port {
111 struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
112 struct rcu_head rcu;
113};
114
115int garp_register_application(struct garp_application *app);
116void garp_unregister_application(struct garp_application *app);
117
118int garp_init_applicant(struct net_device *dev, struct garp_application *app);
119void garp_uninit_applicant(struct net_device *dev,
120 struct garp_application *app);
121
122int garp_request_join(const struct net_device *dev,
123 const struct garp_application *app, const void *data,
124 u8 len, u8 type);
125void garp_request_leave(const struct net_device *dev,
126 const struct garp_application *app,
127 const void *data, u8 len, u8 type);
128
129#endif /* _NET_GARP_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _NET_GARP_H
3#define _NET_GARP_H
4
5#include <linux/if_ether.h>
6#include <linux/types.h>
7#include <net/stp.h>
8
9#define GARP_PROTOCOL_ID 0x1
10#define GARP_END_MARK 0x0
11
12struct garp_pdu_hdr {
13 __be16 protocol;
14};
15
16struct garp_msg_hdr {
17 u8 attrtype;
18};
19
20enum garp_attr_event {
21 GARP_LEAVE_ALL,
22 GARP_JOIN_EMPTY,
23 GARP_JOIN_IN,
24 GARP_LEAVE_EMPTY,
25 GARP_LEAVE_IN,
26 GARP_EMPTY,
27};
28
29struct garp_attr_hdr {
30 u8 len;
31 u8 event;
32 u8 data[];
33};
34
35struct garp_skb_cb {
36 u8 cur_type;
37};
38
39static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb)
40{
41 BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
42 sizeof_field(struct sk_buff, cb));
43 return (struct garp_skb_cb *)skb->cb;
44}
45
46enum garp_applicant_state {
47 GARP_APPLICANT_INVALID,
48 GARP_APPLICANT_VA,
49 GARP_APPLICANT_AA,
50 GARP_APPLICANT_QA,
51 GARP_APPLICANT_LA,
52 GARP_APPLICANT_VP,
53 GARP_APPLICANT_AP,
54 GARP_APPLICANT_QP,
55 GARP_APPLICANT_VO,
56 GARP_APPLICANT_AO,
57 GARP_APPLICANT_QO,
58 __GARP_APPLICANT_MAX
59};
60#define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1)
61
62enum garp_event {
63 GARP_EVENT_REQ_JOIN,
64 GARP_EVENT_REQ_LEAVE,
65 GARP_EVENT_R_JOIN_IN,
66 GARP_EVENT_R_JOIN_EMPTY,
67 GARP_EVENT_R_EMPTY,
68 GARP_EVENT_R_LEAVE_IN,
69 GARP_EVENT_R_LEAVE_EMPTY,
70 GARP_EVENT_TRANSMIT_PDU,
71 __GARP_EVENT_MAX
72};
73#define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1)
74
75enum garp_action {
76 GARP_ACTION_NONE,
77 GARP_ACTION_S_JOIN_IN,
78 GARP_ACTION_S_LEAVE_EMPTY,
79};
80
81struct garp_attr {
82 struct rb_node node;
83 enum garp_applicant_state state;
84 u8 type;
85 u8 dlen;
86 unsigned char data[];
87};
88
89enum garp_applications {
90 GARP_APPLICATION_GVRP,
91 __GARP_APPLICATION_MAX
92};
93#define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
94
95struct garp_application {
96 enum garp_applications type;
97 unsigned int maxattr;
98 struct stp_proto proto;
99};
100
101struct garp_applicant {
102 struct garp_application *app;
103 struct net_device *dev;
104 struct timer_list join_timer;
105
106 spinlock_t lock;
107 struct sk_buff_head queue;
108 struct sk_buff *pdu;
109 struct rb_root gid;
110 struct rcu_head rcu;
111};
112
113struct garp_port {
114 struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
115 struct rcu_head rcu;
116};
117
118int garp_register_application(struct garp_application *app);
119void garp_unregister_application(struct garp_application *app);
120
121int garp_init_applicant(struct net_device *dev, struct garp_application *app);
122void garp_uninit_applicant(struct net_device *dev,
123 struct garp_application *app);
124
125int garp_request_join(const struct net_device *dev,
126 const struct garp_application *app, const void *data,
127 u8 len, u8 type);
128void garp_request_leave(const struct net_device *dev,
129 const struct garp_application *app,
130 const void *data, u8 len, u8 type);
131
132#endif /* _NET_GARP_H */