/* SPDX-License-Identifier: GPL-2.0 */#ifndef _NET_MRP_H#define _NET_MRP_H #include <linux/netdevice.h>#include <linux/skbuff.h>#include <linux/types.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) >		     sizeof_field(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;	bool			active;}; 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 */