Release 4.12 include/net/garp.h

#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;
}

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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 */
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Directory: include/net

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