Release 4.7 include/net/mrp.h

#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;
}

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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 */
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