1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */
2febf018dSDavid Ward #ifndef _NET_MRP_H
3febf018dSDavid Ward #define _NET_MRP_H
4febf018dSDavid Ward
5949d6b40SJakub Kicinski #include <linux/netdevice.h>
6949d6b40SJakub Kicinski #include <linux/skbuff.h>
7949d6b40SJakub Kicinski #include <linux/types.h>
8949d6b40SJakub Kicinski
9febf018dSDavid Ward #define MRP_END_MARK 0x0
10febf018dSDavid Ward
11febf018dSDavid Ward struct mrp_pdu_hdr {
12febf018dSDavid Ward u8 version;
13febf018dSDavid Ward };
14febf018dSDavid Ward
15febf018dSDavid Ward struct mrp_msg_hdr {
16febf018dSDavid Ward u8 attrtype;
17febf018dSDavid Ward u8 attrlen;
18febf018dSDavid Ward };
19febf018dSDavid Ward
20febf018dSDavid Ward struct mrp_vecattr_hdr {
21febf018dSDavid Ward __be16 lenflags;
22febf018dSDavid Ward unsigned char firstattrvalue[];
23febf018dSDavid Ward #define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF)
24febf018dSDavid Ward #define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000)
25febf018dSDavid Ward };
26febf018dSDavid Ward
27febf018dSDavid Ward enum mrp_vecattr_event {
28febf018dSDavid Ward MRP_VECATTR_EVENT_NEW,
29febf018dSDavid Ward MRP_VECATTR_EVENT_JOIN_IN,
30febf018dSDavid Ward MRP_VECATTR_EVENT_IN,
31febf018dSDavid Ward MRP_VECATTR_EVENT_JOIN_MT,
32febf018dSDavid Ward MRP_VECATTR_EVENT_MT,
33febf018dSDavid Ward MRP_VECATTR_EVENT_LV,
34febf018dSDavid Ward __MRP_VECATTR_EVENT_MAX
35febf018dSDavid Ward };
36febf018dSDavid Ward
37febf018dSDavid Ward struct mrp_skb_cb {
38febf018dSDavid Ward struct mrp_msg_hdr *mh;
39febf018dSDavid Ward struct mrp_vecattr_hdr *vah;
40febf018dSDavid Ward unsigned char attrvalue[];
41febf018dSDavid Ward };
42febf018dSDavid Ward
mrp_cb(struct sk_buff * skb)43febf018dSDavid Ward static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb)
44febf018dSDavid Ward {
45febf018dSDavid Ward BUILD_BUG_ON(sizeof(struct mrp_skb_cb) >
46c593642cSPankaj Bharadiya sizeof_field(struct sk_buff, cb));
47febf018dSDavid Ward return (struct mrp_skb_cb *)skb->cb;
48febf018dSDavid Ward }
49febf018dSDavid Ward
50febf018dSDavid Ward enum mrp_applicant_state {
51febf018dSDavid Ward MRP_APPLICANT_INVALID,
52febf018dSDavid Ward MRP_APPLICANT_VO,
53febf018dSDavid Ward MRP_APPLICANT_VP,
54febf018dSDavid Ward MRP_APPLICANT_VN,
55febf018dSDavid Ward MRP_APPLICANT_AN,
56febf018dSDavid Ward MRP_APPLICANT_AA,
57febf018dSDavid Ward MRP_APPLICANT_QA,
58febf018dSDavid Ward MRP_APPLICANT_LA,
59febf018dSDavid Ward MRP_APPLICANT_AO,
60febf018dSDavid Ward MRP_APPLICANT_QO,
61febf018dSDavid Ward MRP_APPLICANT_AP,
62febf018dSDavid Ward MRP_APPLICANT_QP,
63febf018dSDavid Ward __MRP_APPLICANT_MAX
64febf018dSDavid Ward };
65febf018dSDavid Ward #define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1)
66febf018dSDavid Ward
67febf018dSDavid Ward enum mrp_event {
68febf018dSDavid Ward MRP_EVENT_NEW,
69febf018dSDavid Ward MRP_EVENT_JOIN,
70febf018dSDavid Ward MRP_EVENT_LV,
71febf018dSDavid Ward MRP_EVENT_TX,
72febf018dSDavid Ward MRP_EVENT_R_NEW,
73febf018dSDavid Ward MRP_EVENT_R_JOIN_IN,
74febf018dSDavid Ward MRP_EVENT_R_IN,
75febf018dSDavid Ward MRP_EVENT_R_JOIN_MT,
76febf018dSDavid Ward MRP_EVENT_R_MT,
77febf018dSDavid Ward MRP_EVENT_R_LV,
78febf018dSDavid Ward MRP_EVENT_R_LA,
79febf018dSDavid Ward MRP_EVENT_REDECLARE,
80febf018dSDavid Ward MRP_EVENT_PERIODIC,
81febf018dSDavid Ward __MRP_EVENT_MAX
82febf018dSDavid Ward };
83febf018dSDavid Ward #define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1)
84febf018dSDavid Ward
85febf018dSDavid Ward enum mrp_tx_action {
86febf018dSDavid Ward MRP_TX_ACTION_NONE,
87febf018dSDavid Ward MRP_TX_ACTION_S_NEW,
88febf018dSDavid Ward MRP_TX_ACTION_S_JOIN_IN,
89febf018dSDavid Ward MRP_TX_ACTION_S_JOIN_IN_OPTIONAL,
90febf018dSDavid Ward MRP_TX_ACTION_S_IN_OPTIONAL,
91febf018dSDavid Ward MRP_TX_ACTION_S_LV,
92febf018dSDavid Ward };
93febf018dSDavid Ward
94febf018dSDavid Ward struct mrp_attr {
95febf018dSDavid Ward struct rb_node node;
96febf018dSDavid Ward enum mrp_applicant_state state;
97febf018dSDavid Ward u8 type;
98febf018dSDavid Ward u8 len;
99febf018dSDavid Ward unsigned char value[];
100febf018dSDavid Ward };
101febf018dSDavid Ward
102febf018dSDavid Ward enum mrp_applications {
103febf018dSDavid Ward MRP_APPLICATION_MVRP,
104febf018dSDavid Ward __MRP_APPLICATION_MAX
105febf018dSDavid Ward };
106febf018dSDavid Ward #define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1)
107febf018dSDavid Ward
108febf018dSDavid Ward struct mrp_application {
109febf018dSDavid Ward enum mrp_applications type;
110febf018dSDavid Ward unsigned int maxattr;
111febf018dSDavid Ward struct packet_type pkttype;
112febf018dSDavid Ward unsigned char group_address[ETH_ALEN];
113febf018dSDavid Ward u8 version;
114febf018dSDavid Ward };
115febf018dSDavid Ward
116febf018dSDavid Ward struct mrp_applicant {
117febf018dSDavid Ward struct mrp_application *app;
118febf018dSDavid Ward struct net_device *dev;
119febf018dSDavid Ward struct timer_list join_timer;
1209fe34f5dSNoel Burton-Krahn struct timer_list periodic_timer;
121febf018dSDavid Ward
122febf018dSDavid Ward spinlock_t lock;
123febf018dSDavid Ward struct sk_buff_head queue;
124febf018dSDavid Ward struct sk_buff *pdu;
125febf018dSDavid Ward struct rb_root mad;
126febf018dSDavid Ward struct rcu_head rcu;
127*ab037780SSchspa Shi bool active;
128febf018dSDavid Ward };
129febf018dSDavid Ward
130febf018dSDavid Ward struct mrp_port {
131febf018dSDavid Ward struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1];
132febf018dSDavid Ward struct rcu_head rcu;
133febf018dSDavid Ward };
134febf018dSDavid Ward
135a5be1eb6SJoe Perches int mrp_register_application(struct mrp_application *app);
136a5be1eb6SJoe Perches void mrp_unregister_application(struct mrp_application *app);
137febf018dSDavid Ward
138a5be1eb6SJoe Perches int mrp_init_applicant(struct net_device *dev, struct mrp_application *app);
139a5be1eb6SJoe Perches void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *app);
140febf018dSDavid Ward
141a5be1eb6SJoe Perches int mrp_request_join(const struct net_device *dev,
142febf018dSDavid Ward const struct mrp_application *app,
143febf018dSDavid Ward const void *value, u8 len, u8 type);
144a5be1eb6SJoe Perches void mrp_request_leave(const struct net_device *dev,
145febf018dSDavid Ward const struct mrp_application *app,
146febf018dSDavid Ward const void *value, u8 len, u8 type);
147febf018dSDavid Ward
148febf018dSDavid Ward #endif /* _NET_MRP_H */
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