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