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