[linux.git] / include / net / garp.h

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

#include <linux/if_ether.h>
#include <linux/types.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) >
		     sizeof_field(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
949d6b40 JK	5	#include <linux/if_ether.h>
949d6b40 JK	6	#include <linux/types.h>
eca9ebac PM	7	#include <net/stp.h>
	8
	9	#define GARP_PROTOCOL_ID 0x1
	10	#define GARP_END_MARK 0x0
	11
	12	struct garp_pdu_hdr {
	13	__be16 protocol;
	14	};
	15
	16	struct garp_msg_hdr {
	17	u8 attrtype;
	18	};
	19
	20	enum garp_attr_event {
	21	GARP_LEAVE_ALL,
	22	GARP_JOIN_EMPTY,
	23	GARP_JOIN_IN,
	24	GARP_LEAVE_EMPTY,
	25	GARP_LEAVE_IN,
	26	GARP_EMPTY,
	27	};
	28
	29	struct garp_attr_hdr {
	30	u8 len;
	31	u8 event;
	32	u8 data[];
	33	};
	34
	35	struct garp_skb_cb {
	36	u8 cur_type;
	37	};
	38
	39	static inline struct garp_skb_cb garp_cb(struct sk_buff skb)
	40	{
	41	BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
c593642c	42	sizeof_field(struct sk_buff, cb));
eca9ebac PM	43	return (struct garp_skb_cb *)skb->cb;
	44	}
	45
	46	enum garp_applicant_state {
	47	GARP_APPLICANT_INVALID,
	48	GARP_APPLICANT_VA,
	49	GARP_APPLICANT_AA,
	50	GARP_APPLICANT_QA,
	51	GARP_APPLICANT_LA,
	52	GARP_APPLICANT_VP,
	53	GARP_APPLICANT_AP,
	54	GARP_APPLICANT_QP,
	55	GARP_APPLICANT_VO,
	56	GARP_APPLICANT_AO,
	57	GARP_APPLICANT_QO,
	58	__GARP_APPLICANT_MAX
	59	};
	60	#define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1)
	61
	62	enum garp_event {
	63	GARP_EVENT_REQ_JOIN,
	64	GARP_EVENT_REQ_LEAVE,
	65	GARP_EVENT_R_JOIN_IN,
	66	GARP_EVENT_R_JOIN_EMPTY,
	67	GARP_EVENT_R_EMPTY,
	68	GARP_EVENT_R_LEAVE_IN,
	69	GARP_EVENT_R_LEAVE_EMPTY,
	70	GARP_EVENT_TRANSMIT_PDU,
	71	__GARP_EVENT_MAX
	72	};
	73	#define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1)
	74
	75	enum garp_action {
	76	GARP_ACTION_NONE,
	77	GARP_ACTION_S_JOIN_IN,
	78	GARP_ACTION_S_LEAVE_EMPTY,
	79	};
	80
	81	struct garp_attr {
	82	struct rb_node node;
	83	enum garp_applicant_state state;
	84	u8 type;
	85	u8 dlen;
	86	unsigned char data[];
	87	};
	88
	89	enum garp_applications {
70c03b49	90	GARP_APPLICATION_GVRP,
eca9ebac PM	91	__GARP_APPLICATION_MAX
	92	};
	93	#define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
	94
	95	struct garp_application {
	96	enum garp_applications type;
	97	unsigned int maxattr;
	98	struct stp_proto proto;
	99	};
	100
	101	struct garp_applicant {
	102	struct garp_application *app;
	103	struct net_device *dev;
	104	struct timer_list join_timer;
	105
	106	spinlock_t lock;
	107	struct sk_buff_head queue;
	108	struct sk_buff *pdu;
	109	struct rb_root gid;
f607a158	110	struct rcu_head rcu;
eca9ebac PM	111	};
	112
	113	struct garp_port {
3cc77ec7	114	struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
da37e368	115	struct rcu_head rcu;
eca9ebac PM	116	};
eca9ebac PM	117
2008f21c JP	118	int garp_register_application(struct garp_application *app);
	119	void garp_unregister_application(struct garp_application *app);
	120
	121	int garp_init_applicant(struct net_device dev, struct garp_application app);
	122	void garp_uninit_applicant(struct net_device *dev,
	123	struct garp_application *app);
	124
	125	int garp_request_join(const struct net_device *dev,
	126	const struct garp_application app, const void data,
	127	u8 len, u8 type);
	128	void garp_request_leave(const struct net_device *dev,
	129	const struct garp_application *app,
	130	const void *data, u8 len, u8 type);
eca9ebac PM	131
eca9ebac PM	132	#endif /* _NET_GARP_H */