1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NET_GARP_H 2 #ifndef _NET_GARP_H
3 #define _NET_GARP_H 3 #define _NET_GARP_H
4 4
5 #include <linux/if_ether.h> 5 #include <linux/if_ether.h>
6 #include <linux/types.h> 6 #include <linux/types.h>
7 #include <net/stp.h> 7 #include <net/stp.h>
8 8
9 #define GARP_PROTOCOL_ID 0x1 9 #define GARP_PROTOCOL_ID 0x1
10 #define GARP_END_MARK 0x0 10 #define GARP_END_MARK 0x0
11 11
12 struct garp_pdu_hdr { 12 struct garp_pdu_hdr {
13 __be16 protocol; 13 __be16 protocol;
14 }; 14 };
15 15
16 struct garp_msg_hdr { 16 struct garp_msg_hdr {
17 u8 attrtype; 17 u8 attrtype;
18 }; 18 };
19 19
20 enum garp_attr_event { 20 enum garp_attr_event {
21 GARP_LEAVE_ALL, 21 GARP_LEAVE_ALL,
22 GARP_JOIN_EMPTY, 22 GARP_JOIN_EMPTY,
23 GARP_JOIN_IN, 23 GARP_JOIN_IN,
24 GARP_LEAVE_EMPTY, 24 GARP_LEAVE_EMPTY,
25 GARP_LEAVE_IN, 25 GARP_LEAVE_IN,
26 GARP_EMPTY, 26 GARP_EMPTY,
27 }; 27 };
28 28
29 struct garp_attr_hdr { 29 struct garp_attr_hdr {
30 u8 len; 30 u8 len;
31 u8 event; 31 u8 event;
32 u8 data[]; 32 u8 data[];
33 }; 33 };
34 34
35 struct garp_skb_cb { 35 struct garp_skb_cb {
36 u8 cur_type; 36 u8 cur_type;
37 }; 37 };
38 38
39 static inline struct garp_skb_cb *garp_cb(stru 39 static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb)
40 { 40 {
41 BUILD_BUG_ON(sizeof(struct garp_skb_cb 41 BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
42 sizeof_field(struct sk_bu 42 sizeof_field(struct sk_buff, cb));
43 return (struct garp_skb_cb *)skb->cb; 43 return (struct garp_skb_cb *)skb->cb;
44 } 44 }
45 45
46 enum garp_applicant_state { 46 enum garp_applicant_state {
47 GARP_APPLICANT_INVALID, 47 GARP_APPLICANT_INVALID,
48 GARP_APPLICANT_VA, 48 GARP_APPLICANT_VA,
49 GARP_APPLICANT_AA, 49 GARP_APPLICANT_AA,
50 GARP_APPLICANT_QA, 50 GARP_APPLICANT_QA,
51 GARP_APPLICANT_LA, 51 GARP_APPLICANT_LA,
52 GARP_APPLICANT_VP, 52 GARP_APPLICANT_VP,
53 GARP_APPLICANT_AP, 53 GARP_APPLICANT_AP,
54 GARP_APPLICANT_QP, 54 GARP_APPLICANT_QP,
55 GARP_APPLICANT_VO, 55 GARP_APPLICANT_VO,
56 GARP_APPLICANT_AO, 56 GARP_APPLICANT_AO,
57 GARP_APPLICANT_QO, 57 GARP_APPLICANT_QO,
58 __GARP_APPLICANT_MAX 58 __GARP_APPLICANT_MAX
59 }; 59 };
60 #define GARP_APPLICANT_MAX (__GARP_APPLIC 60 #define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1)
61 61
62 enum garp_event { 62 enum garp_event {
63 GARP_EVENT_REQ_JOIN, 63 GARP_EVENT_REQ_JOIN,
64 GARP_EVENT_REQ_LEAVE, 64 GARP_EVENT_REQ_LEAVE,
65 GARP_EVENT_R_JOIN_IN, 65 GARP_EVENT_R_JOIN_IN,
66 GARP_EVENT_R_JOIN_EMPTY, 66 GARP_EVENT_R_JOIN_EMPTY,
67 GARP_EVENT_R_EMPTY, 67 GARP_EVENT_R_EMPTY,
68 GARP_EVENT_R_LEAVE_IN, 68 GARP_EVENT_R_LEAVE_IN,
69 GARP_EVENT_R_LEAVE_EMPTY, 69 GARP_EVENT_R_LEAVE_EMPTY,
70 GARP_EVENT_TRANSMIT_PDU, 70 GARP_EVENT_TRANSMIT_PDU,
71 __GARP_EVENT_MAX 71 __GARP_EVENT_MAX
72 }; 72 };
73 #define GARP_EVENT_MAX (__GARP_EVENT_ 73 #define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1)
74 74
75 enum garp_action { 75 enum garp_action {
76 GARP_ACTION_NONE, 76 GARP_ACTION_NONE,
77 GARP_ACTION_S_JOIN_IN, 77 GARP_ACTION_S_JOIN_IN,
78 GARP_ACTION_S_LEAVE_EMPTY, 78 GARP_ACTION_S_LEAVE_EMPTY,
79 }; 79 };
80 80
81 struct garp_attr { 81 struct garp_attr {
82 struct rb_node node; 82 struct rb_node node;
83 enum garp_applicant_state state; 83 enum garp_applicant_state state;
84 u8 type; 84 u8 type;
85 u8 dlen; 85 u8 dlen;
86 unsigned char data[] 86 unsigned char data[];
87 }; 87 };
88 88
89 enum garp_applications { 89 enum garp_applications {
90 GARP_APPLICATION_GVRP, 90 GARP_APPLICATION_GVRP,
91 __GARP_APPLICATION_MAX 91 __GARP_APPLICATION_MAX
92 }; 92 };
93 #define GARP_APPLICATION_MAX (__GARP_APPLIC 93 #define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
94 94
95 struct garp_application { 95 struct garp_application {
96 enum garp_applications type; 96 enum garp_applications type;
97 unsigned int maxattr; 97 unsigned int maxattr;
98 struct stp_proto proto; 98 struct stp_proto proto;
99 }; 99 };
100 100
101 struct garp_applicant { 101 struct garp_applicant {
102 struct garp_application *app; 102 struct garp_application *app;
103 struct net_device *dev; 103 struct net_device *dev;
104 struct timer_list join_timer; 104 struct timer_list join_timer;
105 105
106 spinlock_t lock; 106 spinlock_t lock;
107 struct sk_buff_head queue; 107 struct sk_buff_head queue;
108 struct sk_buff *pdu; 108 struct sk_buff *pdu;
109 struct rb_root gid; 109 struct rb_root gid;
110 struct rcu_head rcu; 110 struct rcu_head rcu;
111 }; 111 };
112 112
113 struct garp_port { 113 struct garp_port {
114 struct garp_applicant __rcu *appli 114 struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
115 struct rcu_head rcu; 115 struct rcu_head rcu;
116 }; 116 };
117 117
118 int garp_register_application(struct garp_appl 118 int garp_register_application(struct garp_application *app);
119 void garp_unregister_application(struct garp_a 119 void garp_unregister_application(struct garp_application *app);
120 120
121 int garp_init_applicant(struct net_device *dev 121 int garp_init_applicant(struct net_device *dev, struct garp_application *app);
122 void garp_uninit_applicant(struct net_device * 122 void garp_uninit_applicant(struct net_device *dev,
123 struct garp_applica 123 struct garp_application *app);
124 124
125 int garp_request_join(const struct net_device 125 int garp_request_join(const struct net_device *dev,
126 const struct garp_applic 126 const struct garp_application *app, const void *data,
127 u8 len, u8 type); 127 u8 len, u8 type);
128 void garp_request_leave(const struct net_devic 128 void garp_request_leave(const struct net_device *dev,
129 const struct garp_appl 129 const struct garp_application *app,
130 const void *data, u8 l 130 const void *data, u8 len, u8 type);
131 131
132 #endif /* _NET_GARP_H */ 132 #endif /* _NET_GARP_H */
133 133
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