Eric Lee / smarc-fsl-linux-kernel

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include/net/garp.h 2.62 KB
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b24413180   Greg Kroah-Hartman   License cleanup: ... 
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  /* SPDX-License-Identifier: GPL-2.0 */
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  #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) >
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  		     sizeof_field(struct sk_buff, cb));
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  	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 {
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  	GARP_APPLICATION_GVRP,
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  	__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;
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  	struct rcu_head		rcu;
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  };
  
  struct garp_port {
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  	struct garp_applicant __rcu	*applicants[GARP_APPLICATION_MAX + 1];
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  	struct rcu_head			rcu;
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  };
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  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);
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  #endif /* _NET_GARP_H */