[mirror_ubuntu-bionic-kernel.git] / include / net / mrp.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_MRP_H
#define _NET_MRP_H

#define MRP_END_MARK		0x0

struct mrp_pdu_hdr {
	u8	version;
};

struct mrp_msg_hdr {
	u8	attrtype;
	u8	attrlen;
};

struct mrp_vecattr_hdr {
	__be16	lenflags;
	unsigned char	firstattrvalue[];
#define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF)
#define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000)
};

enum mrp_vecattr_event {
	MRP_VECATTR_EVENT_NEW,
	MRP_VECATTR_EVENT_JOIN_IN,
	MRP_VECATTR_EVENT_IN,
	MRP_VECATTR_EVENT_JOIN_MT,
	MRP_VECATTR_EVENT_MT,
	MRP_VECATTR_EVENT_LV,
	__MRP_VECATTR_EVENT_MAX
};

struct mrp_skb_cb {
	struct mrp_msg_hdr	*mh;
	struct mrp_vecattr_hdr	*vah;
	unsigned char		attrvalue[];
};

static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb)
{
	BUILD_BUG_ON(sizeof(struct mrp_skb_cb) >
		     FIELD_SIZEOF(struct sk_buff, cb));
	return (struct mrp_skb_cb *)skb->cb;
}

enum mrp_applicant_state {
	MRP_APPLICANT_INVALID,
	MRP_APPLICANT_VO,
	MRP_APPLICANT_VP,
	MRP_APPLICANT_VN,
	MRP_APPLICANT_AN,
	MRP_APPLICANT_AA,
	MRP_APPLICANT_QA,
	MRP_APPLICANT_LA,
	MRP_APPLICANT_AO,
	MRP_APPLICANT_QO,
	MRP_APPLICANT_AP,
	MRP_APPLICANT_QP,
	__MRP_APPLICANT_MAX
};
#define MRP_APPLICANT_MAX	(__MRP_APPLICANT_MAX - 1)

enum mrp_event {
	MRP_EVENT_NEW,
	MRP_EVENT_JOIN,
	MRP_EVENT_LV,
	MRP_EVENT_TX,
	MRP_EVENT_R_NEW,
	MRP_EVENT_R_JOIN_IN,
	MRP_EVENT_R_IN,
	MRP_EVENT_R_JOIN_MT,
	MRP_EVENT_R_MT,
	MRP_EVENT_R_LV,
	MRP_EVENT_R_LA,
	MRP_EVENT_REDECLARE,
	MRP_EVENT_PERIODIC,
	__MRP_EVENT_MAX
};
#define MRP_EVENT_MAX		(__MRP_EVENT_MAX - 1)

enum mrp_tx_action {
	MRP_TX_ACTION_NONE,
	MRP_TX_ACTION_S_NEW,
	MRP_TX_ACTION_S_JOIN_IN,
	MRP_TX_ACTION_S_JOIN_IN_OPTIONAL,
	MRP_TX_ACTION_S_IN_OPTIONAL,
	MRP_TX_ACTION_S_LV,
};

struct mrp_attr {
	struct rb_node			node;
	enum mrp_applicant_state	state;
	u8				type;
	u8				len;
	unsigned char			value[];
};

enum mrp_applications {
	MRP_APPLICATION_MVRP,
	__MRP_APPLICATION_MAX
};
#define MRP_APPLICATION_MAX	(__MRP_APPLICATION_MAX - 1)

struct mrp_application {
	enum mrp_applications	type;
	unsigned int		maxattr;
	struct packet_type	pkttype;
	unsigned char		group_address[ETH_ALEN];
	u8			version;
};

struct mrp_applicant {
	struct mrp_application	*app;
	struct net_device	*dev;
	struct timer_list	join_timer;
	struct timer_list	periodic_timer;

	spinlock_t		lock;
	struct sk_buff_head	queue;
	struct sk_buff		*pdu;
	struct rb_root		mad;
	struct rcu_head		rcu;
};

struct mrp_port {
	struct mrp_applicant __rcu	*applicants[MRP_APPLICATION_MAX + 1];
	struct rcu_head			rcu;
};

int mrp_register_application(struct mrp_application *app);
void mrp_unregister_application(struct mrp_application *app);

int mrp_init_applicant(struct net_device *dev, struct mrp_application *app);
void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *app);

int mrp_request_join(const struct net_device *dev,
		     const struct mrp_application *app,
		     const void *value, u8 len, u8 type);
void mrp_request_leave(const struct net_device *dev,
		       const struct mrp_application *app,
		       const void *value, u8 len, u8 type);

#endif /* _NET_MRP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
febf018d DW	2	#ifndef _NET_MRP_H
	3	#define _NET_MRP_H
	4
	5	#define MRP_END_MARK 0x0
	6
	7	struct mrp_pdu_hdr {
	8	u8 version;
	9	};
	10
	11	struct mrp_msg_hdr {
	12	u8 attrtype;
	13	u8 attrlen;
	14	};
	15
	16	struct mrp_vecattr_hdr {
	17	__be16 lenflags;
	18	unsigned char firstattrvalue[];
	19	#define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF)
	20	#define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000)
	21	};
	22
	23	enum mrp_vecattr_event {
	24	MRP_VECATTR_EVENT_NEW,
	25	MRP_VECATTR_EVENT_JOIN_IN,
	26	MRP_VECATTR_EVENT_IN,
	27	MRP_VECATTR_EVENT_JOIN_MT,
	28	MRP_VECATTR_EVENT_MT,
	29	MRP_VECATTR_EVENT_LV,
	30	__MRP_VECATTR_EVENT_MAX
	31	};
	32
	33	struct mrp_skb_cb {
	34	struct mrp_msg_hdr *mh;
	35	struct mrp_vecattr_hdr *vah;
	36	unsigned char attrvalue[];
	37	};
	38
	39	static inline struct mrp_skb_cb mrp_cb(struct sk_buff skb)
	40	{
	41	BUILD_BUG_ON(sizeof(struct mrp_skb_cb) >
	42	FIELD_SIZEOF(struct sk_buff, cb));
	43	return (struct mrp_skb_cb *)skb->cb;
	44	}
	45
	46	enum mrp_applicant_state {
	47	MRP_APPLICANT_INVALID,
	48	MRP_APPLICANT_VO,
	49	MRP_APPLICANT_VP,
	50	MRP_APPLICANT_VN,
	51	MRP_APPLICANT_AN,
	52	MRP_APPLICANT_AA,
	53	MRP_APPLICANT_QA,
	54	MRP_APPLICANT_LA,
	55	MRP_APPLICANT_AO,
	56	MRP_APPLICANT_QO,
	57	MRP_APPLICANT_AP,
	58	MRP_APPLICANT_QP,
	59	__MRP_APPLICANT_MAX
	60	};
	61	#define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1)
	62
	63	enum mrp_event {
	64	MRP_EVENT_NEW,
	65	MRP_EVENT_JOIN,
66	MRP_EVENT_LV,
67	MRP_EVENT_TX,
68	MRP_EVENT_R_NEW,
69	MRP_EVENT_R_JOIN_IN,
70	MRP_EVENT_R_IN,
71	MRP_EVENT_R_JOIN_MT,
72	MRP_EVENT_R_MT,
73	MRP_EVENT_R_LV,
74	MRP_EVENT_R_LA,
75	MRP_EVENT_REDECLARE,
76	MRP_EVENT_PERIODIC,
77	__MRP_EVENT_MAX
78	};
79	#define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1)
80
81	enum mrp_tx_action {
82	MRP_TX_ACTION_NONE,
83	MRP_TX_ACTION_S_NEW,
84	MRP_TX_ACTION_S_JOIN_IN,
85	MRP_TX_ACTION_S_JOIN_IN_OPTIONAL,
86	MRP_TX_ACTION_S_IN_OPTIONAL,
87	MRP_TX_ACTION_S_LV,
88	};
89
90	struct mrp_attr {
91	struct rb_node node;
92	enum mrp_applicant_state state;
93	u8 type;
94	u8 len;
95	unsigned char value[];
96	};
97
98	enum mrp_applications {
99	MRP_APPLICATION_MVRP,
100	__MRP_APPLICATION_MAX
101	};
102	#define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1)
103
104	struct mrp_application {
105	enum mrp_applications type;
106	unsigned int maxattr;
107	struct packet_type pkttype;
108	unsigned char group_address[ETH_ALEN];
109	u8 version;
110	};
111
112	struct mrp_applicant {
113	struct mrp_application *app;
114	struct net_device *dev;
115	struct timer_list join_timer;
9fe34f5d	116	struct timer_list periodic_timer;
febf018d DW	117
	118	spinlock_t lock;
	119	struct sk_buff_head queue;
	120	struct sk_buff *pdu;
	121	struct rb_root mad;
	122	struct rcu_head rcu;
	123	};
	124
	125	struct mrp_port {
	126	struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1];
	127	struct rcu_head rcu;
	128	};
	129
a5be1eb6 JP	130	int mrp_register_application(struct mrp_application *app);
	131	void mrp_unregister_application(struct mrp_application *app);
	132
	133	int mrp_init_applicant(struct net_device dev, struct mrp_application app);
	134	void mrp_uninit_applicant(struct net_device dev, struct mrp_application app);
	135
	136	int mrp_request_join(const struct net_device *dev,
	137	const struct mrp_application *app,
	138	const void *value, u8 len, u8 type);
	139	void mrp_request_leave(const struct net_device *dev,
	140	const struct mrp_application *app,
	141	const void *value, u8 len, u8 type);
febf018d DW	142
febf018d DW	143	#endif /* _NET_MRP_H */