1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _NET_MRP_H |
3 | #define _NET_MRP_H |
4 | |
5 | #include <linux/netdevice.h> |
6 | #include <linux/skbuff.h> |
7 | #include <linux/types.h> |
8 | |
9 | #define MRP_END_MARK 0x0 |
10 | |
11 | struct mrp_pdu_hdr { |
12 | u8 version; |
13 | }; |
14 | |
15 | struct mrp_msg_hdr { |
16 | u8 attrtype; |
17 | u8 attrlen; |
18 | }; |
19 | |
20 | struct mrp_vecattr_hdr { |
21 | __be16 lenflags; |
22 | unsigned char firstattrvalue[]; |
23 | #define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF) |
24 | #define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000) |
25 | }; |
26 | |
27 | enum mrp_vecattr_event { |
28 | MRP_VECATTR_EVENT_NEW, |
29 | MRP_VECATTR_EVENT_JOIN_IN, |
30 | MRP_VECATTR_EVENT_IN, |
31 | MRP_VECATTR_EVENT_JOIN_MT, |
32 | MRP_VECATTR_EVENT_MT, |
33 | MRP_VECATTR_EVENT_LV, |
34 | __MRP_VECATTR_EVENT_MAX |
35 | }; |
36 | |
37 | struct mrp_skb_cb { |
38 | struct mrp_msg_hdr *mh; |
39 | struct mrp_vecattr_hdr *vah; |
40 | unsigned char attrvalue[]; |
41 | }; |
42 | |
43 | static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb) |
44 | { |
45 | BUILD_BUG_ON(sizeof(struct mrp_skb_cb) > |
46 | sizeof_field(struct sk_buff, cb)); |
47 | return (struct mrp_skb_cb *)skb->cb; |
48 | } |
49 | |
50 | enum mrp_applicant_state { |
51 | MRP_APPLICANT_INVALID, |
52 | MRP_APPLICANT_VO, |
53 | MRP_APPLICANT_VP, |
54 | MRP_APPLICANT_VN, |
55 | MRP_APPLICANT_AN, |
56 | MRP_APPLICANT_AA, |
57 | MRP_APPLICANT_QA, |
58 | MRP_APPLICANT_LA, |
59 | MRP_APPLICANT_AO, |
60 | MRP_APPLICANT_QO, |
61 | MRP_APPLICANT_AP, |
62 | MRP_APPLICANT_QP, |
63 | __MRP_APPLICANT_MAX |
64 | }; |
65 | #define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1) |
66 | |
67 | enum mrp_event { |
68 | MRP_EVENT_NEW, |
69 | MRP_EVENT_JOIN, |
70 | MRP_EVENT_LV, |
71 | MRP_EVENT_TX, |
72 | MRP_EVENT_R_NEW, |
73 | MRP_EVENT_R_JOIN_IN, |
74 | MRP_EVENT_R_IN, |
75 | MRP_EVENT_R_JOIN_MT, |
76 | MRP_EVENT_R_MT, |
77 | MRP_EVENT_R_LV, |
78 | MRP_EVENT_R_LA, |
79 | MRP_EVENT_REDECLARE, |
80 | MRP_EVENT_PERIODIC, |
81 | __MRP_EVENT_MAX |
82 | }; |
83 | #define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1) |
84 | |
85 | enum mrp_tx_action { |
86 | MRP_TX_ACTION_NONE, |
87 | MRP_TX_ACTION_S_NEW, |
88 | MRP_TX_ACTION_S_JOIN_IN, |
89 | MRP_TX_ACTION_S_JOIN_IN_OPTIONAL, |
90 | MRP_TX_ACTION_S_IN_OPTIONAL, |
91 | MRP_TX_ACTION_S_LV, |
92 | }; |
93 | |
94 | struct mrp_attr { |
95 | struct rb_node node; |
96 | enum mrp_applicant_state state; |
97 | u8 type; |
98 | u8 len; |
99 | unsigned char value[]; |
100 | }; |
101 | |
102 | enum mrp_applications { |
103 | MRP_APPLICATION_MVRP, |
104 | __MRP_APPLICATION_MAX |
105 | }; |
106 | #define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1) |
107 | |
108 | struct mrp_application { |
109 | enum mrp_applications type; |
110 | unsigned int maxattr; |
111 | struct packet_type pkttype; |
112 | unsigned char group_address[ETH_ALEN]; |
113 | u8 version; |
114 | }; |
115 | |
116 | struct mrp_applicant { |
117 | struct mrp_application *app; |
118 | struct net_device *dev; |
119 | struct timer_list join_timer; |
120 | struct timer_list periodic_timer; |
121 | |
122 | spinlock_t lock; |
123 | struct sk_buff_head queue; |
124 | struct sk_buff *pdu; |
125 | struct rb_root mad; |
126 | struct rcu_head rcu; |
127 | bool active; |
128 | }; |
129 | |
130 | struct mrp_port { |
131 | struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1]; |
132 | struct rcu_head rcu; |
133 | }; |
134 | |
135 | int mrp_register_application(struct mrp_application *app); |
136 | void mrp_unregister_application(struct mrp_application *app); |
137 | |
138 | int mrp_init_applicant(struct net_device *dev, struct mrp_application *app); |
139 | void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *app); |
140 | |
141 | int mrp_request_join(const struct net_device *dev, |
142 | const struct mrp_application *app, |
143 | const void *value, u8 len, u8 type); |
144 | void mrp_request_leave(const struct net_device *dev, |
145 | const struct mrp_application *app, |
146 | const void *value, u8 len, u8 type); |
147 | |
148 | #endif /* _NET_MRP_H */ |
149 | |