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

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

#include <net/stp.h>

#define GARP_PROTOCOL_ID	0x1
#define GARP_END_MARK		0x0

struct garp_pdu_hdr {
	__be16	protocol;
};

struct garp_msg_hdr {
	u8	attrtype;
};

enum garp_attr_event {
	GARP_LEAVE_ALL,
	GARP_JOIN_EMPTY,
	GARP_JOIN_IN,
	GARP_LEAVE_EMPTY,
	GARP_LEAVE_IN,
	GARP_EMPTY,
};

struct garp_attr_hdr {
	u8	len;
	u8	event;
	u8	data[];
};

struct garp_skb_cb {
	u8	cur_type;
};

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

enum garp_applicant_state {
	GARP_APPLICANT_INVALID,
	GARP_APPLICANT_VA,
	GARP_APPLICANT_AA,
	GARP_APPLICANT_QA,
	GARP_APPLICANT_LA,
	GARP_APPLICANT_VP,
	GARP_APPLICANT_AP,
	GARP_APPLICANT_QP,
	GARP_APPLICANT_VO,
	GARP_APPLICANT_AO,
	GARP_APPLICANT_QO,
	__GARP_APPLICANT_MAX
};
#define GARP_APPLICANT_MAX	(__GARP_APPLICANT_MAX - 1)

enum garp_event {
	GARP_EVENT_REQ_JOIN,
	GARP_EVENT_REQ_LEAVE,
	GARP_EVENT_R_JOIN_IN,
	GARP_EVENT_R_JOIN_EMPTY,
	GARP_EVENT_R_EMPTY,
	GARP_EVENT_R_LEAVE_IN,
	GARP_EVENT_R_LEAVE_EMPTY,
	GARP_EVENT_TRANSMIT_PDU,
	__GARP_EVENT_MAX
};
#define GARP_EVENT_MAX		(__GARP_EVENT_MAX - 1)

enum garp_action {
	GARP_ACTION_NONE,
	GARP_ACTION_S_JOIN_IN,
	GARP_ACTION_S_LEAVE_EMPTY,
};

struct garp_attr {
	struct rb_node			node;
	enum garp_applicant_state	state;
	u8				type;
	u8				dlen;
	unsigned char			data[];
};

enum garp_applications {
	GARP_APPLICATION_GVRP,
	__GARP_APPLICATION_MAX
};
#define GARP_APPLICATION_MAX	(__GARP_APPLICATION_MAX - 1)

struct garp_application {
	enum garp_applications	type;
	unsigned int		maxattr;
	struct stp_proto	proto;
};

struct garp_applicant {
	struct garp_application	*app;
	struct net_device	*dev;
	struct timer_list	join_timer;

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

struct garp_port {
	struct garp_applicant __rcu	*applicants[GARP_APPLICATION_MAX + 1];
	struct rcu_head			rcu;
};

int garp_register_application(struct garp_application *app);
void garp_unregister_application(struct garp_application *app);

int garp_init_applicant(struct net_device *dev, struct garp_application *app);
void garp_uninit_applicant(struct net_device *dev,
			   struct garp_application *app);

int garp_request_join(const struct net_device *dev,
		      const struct garp_application *app, const void *data,
		      u8 len, u8 type);
void garp_request_leave(const struct net_device *dev,
			const struct garp_application *app,
			const void *data, u8 len, u8 type);

#endif /* _NET_GARP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
eca9ebac PM	2	#ifndef _NET_GARP_H
	3	#define _NET_GARP_H
	4
	5	#include <net/stp.h>
	6
	7	#define GARP_PROTOCOL_ID 0x1
	8	#define GARP_END_MARK 0x0
	9
	10	struct garp_pdu_hdr {
	11	__be16 protocol;
	12	};
	13
	14	struct garp_msg_hdr {
	15	u8 attrtype;
	16	};
	17
	18	enum garp_attr_event {
	19	GARP_LEAVE_ALL,
	20	GARP_JOIN_EMPTY,
	21	GARP_JOIN_IN,
	22	GARP_LEAVE_EMPTY,
	23	GARP_LEAVE_IN,
	24	GARP_EMPTY,
	25	};
	26
	27	struct garp_attr_hdr {
	28	u8 len;
	29	u8 event;
	30	u8 data[];
	31	};
	32
	33	struct garp_skb_cb {
	34	u8 cur_type;
	35	};
	36
	37	static inline struct garp_skb_cb garp_cb(struct sk_buff skb)
	38	{
	39	BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
	40	FIELD_SIZEOF(struct sk_buff, cb));
	41	return (struct garp_skb_cb *)skb->cb;
	42	}
	43
	44	enum garp_applicant_state {
	45	GARP_APPLICANT_INVALID,
	46	GARP_APPLICANT_VA,
	47	GARP_APPLICANT_AA,
	48	GARP_APPLICANT_QA,
	49	GARP_APPLICANT_LA,
	50	GARP_APPLICANT_VP,
	51	GARP_APPLICANT_AP,
	52	GARP_APPLICANT_QP,
	53	GARP_APPLICANT_VO,
	54	GARP_APPLICANT_AO,
	55	GARP_APPLICANT_QO,
	56	__GARP_APPLICANT_MAX
	57	};
	58	#define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1)
	59
	60	enum garp_event {
	61	GARP_EVENT_REQ_JOIN,
	62	GARP_EVENT_REQ_LEAVE,
	63	GARP_EVENT_R_JOIN_IN,
	64	GARP_EVENT_R_JOIN_EMPTY,
	65	GARP_EVENT_R_EMPTY,
66	GARP_EVENT_R_LEAVE_IN,
67	GARP_EVENT_R_LEAVE_EMPTY,
68	GARP_EVENT_TRANSMIT_PDU,
69	__GARP_EVENT_MAX
70	};
71	#define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1)
72
73	enum garp_action {
74	GARP_ACTION_NONE,
75	GARP_ACTION_S_JOIN_IN,
76	GARP_ACTION_S_LEAVE_EMPTY,
77	};
78
79	struct garp_attr {
80	struct rb_node node;
81	enum garp_applicant_state state;
82	u8 type;
83	u8 dlen;
84	unsigned char data[];
85	};
86
87	enum garp_applications {
70c03b49	88	GARP_APPLICATION_GVRP,
eca9ebac PM	89	__GARP_APPLICATION_MAX
	90	};
	91	#define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
	92
	93	struct garp_application {
	94	enum garp_applications type;
	95	unsigned int maxattr;
	96	struct stp_proto proto;
	97	};
	98
	99	struct garp_applicant {
	100	struct garp_application *app;
	101	struct net_device *dev;
	102	struct timer_list join_timer;
	103
	104	spinlock_t lock;
	105	struct sk_buff_head queue;
	106	struct sk_buff *pdu;
	107	struct rb_root gid;
f607a158	108	struct rcu_head rcu;
eca9ebac PM	109	};
	110
	111	struct garp_port {
3cc77ec7	112	struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
da37e368	113	struct rcu_head rcu;
eca9ebac PM	114	};
eca9ebac PM	115
2008f21c JP	116	int garp_register_application(struct garp_application *app);
	117	void garp_unregister_application(struct garp_application *app);
	118
	119	int garp_init_applicant(struct net_device dev, struct garp_application app);
	120	void garp_uninit_applicant(struct net_device *dev,
	121	struct garp_application *app);
	122
	123	int garp_request_join(const struct net_device *dev,
	124	const struct garp_application app, const void data,
	125	u8 len, u8 type);
	126	void garp_request_leave(const struct net_device *dev,
	127	const struct garp_application *app,
	128	const void *data, u8 len, u8 type);
eca9ebac PM	129
eca9ebac PM	130	#endif /* _NET_GARP_H */