#ifndef __LINUX_MROUTE_H
  #define __LINUX_MROUTE_H
  
  #include <linux/sockios.h>

  #include <linux/types.h>
  #ifdef __KERNEL__

  #include <linux/in.h>

  #endif

  
  /*
   *	Based on the MROUTING 3.5 defines primarily to keep
   *	source compatibility with BSD.
   *
   *	See the mrouted code for the original history.
   *
   *      Protocol Independent Multicast (PIM) data structures included
   *      Carlos Picoto (cap@di.fc.ul.pt)
   *
   */
  
  #define MRT_BASE	200
  #define MRT_INIT	(MRT_BASE)	/* Activate the kernel mroute code 	*/
  #define MRT_DONE	(MRT_BASE+1)	/* Shutdown the kernel mroute		*/
  #define MRT_ADD_VIF	(MRT_BASE+2)	/* Add a virtual interface		*/
  #define MRT_DEL_VIF	(MRT_BASE+3)	/* Delete a virtual interface		*/
  #define MRT_ADD_MFC	(MRT_BASE+4)	/* Add a multicast forwarding entry	*/
  #define MRT_DEL_MFC	(MRT_BASE+5)	/* Delete a multicast forwarding entry	*/
  #define MRT_VERSION	(MRT_BASE+6)	/* Get the kernel multicast version	*/
  #define MRT_ASSERT	(MRT_BASE+7)	/* Activate PIM assert mode		*/

  #define MRT_PIM		(MRT_BASE+8)	/* enable PIM code			*/
  #define MRT_TABLE	(MRT_BASE+9)	/* Specify mroute table ID		*/

  
  #define SIOCGETVIFCNT	SIOCPROTOPRIVATE	/* IP protocol privates */
  #define SIOCGETSGCNT	(SIOCPROTOPRIVATE+1)
  #define SIOCGETRPF	(SIOCPROTOPRIVATE+2)
  
  #define MAXVIFS		32	
  typedef unsigned long vifbitmap_t;	/* User mode code depends on this lot */
  typedef unsigned short vifi_t;
  #define ALL_VIFS	((vifi_t)(-1))
  
  /*
   *	Same idea as select
   */
   
  #define VIFM_SET(n,m)	((m)|=(1<<(n)))
  #define VIFM_CLR(n,m)	((m)&=~(1<<(n)))
  #define VIFM_ISSET(n,m)	((m)&(1<<(n)))
  #define VIFM_CLRALL(m)	((m)=0)
  #define VIFM_COPY(mfrom,mto)	((mto)=(mfrom))
  #define VIFM_SAME(m1,m2)	((m1)==(m2))
  
  /*
   *	Passed by mrouted for an MRT_ADD_VIF - again we use the
   *	mrouted 3.6 structures for compatibility
   */
   
  struct vifctl {
  	vifi_t	vifc_vifi;		/* Index of VIF */
  	unsigned char vifc_flags;	/* VIFF_ flags */
  	unsigned char vifc_threshold;	/* ttl limit */
  	unsigned int vifc_rate_limit;	/* Rate limiter values (NI) */

  	union {
  		struct in_addr vifc_lcl_addr;     /* Local interface address */
  		int            vifc_lcl_ifindex;  /* Local interface index   */
  	};

  	struct in_addr vifc_rmt_addr;	/* IPIP tunnel addr */
  };

  #define VIFF_TUNNEL		0x1	/* IPIP tunnel */
  #define VIFF_SRCRT		0x2	/* NI */
  #define VIFF_REGISTER		0x4	/* register vif	*/
  #define VIFF_USE_IFINDEX	0x8	/* use vifc_lcl_ifindex instead of
  					   vifc_lcl_addr to find an interface */

  
  /*
   *	Cache manipulation structures for mrouted and PIMd
   */
   

  struct mfcctl {

  	struct in_addr mfcc_origin;		/* Origin of mcast	*/
  	struct in_addr mfcc_mcastgrp;		/* Group in question	*/
  	vifi_t	mfcc_parent;			/* Where it arrived	*/
  	unsigned char mfcc_ttls[MAXVIFS];	/* Where it is going	*/
  	unsigned int mfcc_pkt_cnt;		/* pkt count for src-grp */
  	unsigned int mfcc_byte_cnt;
  	unsigned int mfcc_wrong_if;
  	int	     mfcc_expire;
  };
  
  /* 
   *	Group count retrieval for mrouted
   */
   

  struct sioc_sg_req {

  	struct in_addr src;
  	struct in_addr grp;
  	unsigned long pktcnt;
  	unsigned long bytecnt;
  	unsigned long wrong_if;
  };
  
  /*
   *	To get vif packet counts
   */

  struct sioc_vif_req {

  	vifi_t	vifi;		/* Which iface */
  	unsigned long icount;	/* In packets */
  	unsigned long ocount;	/* Out packets */
  	unsigned long ibytes;	/* In bytes */
  	unsigned long obytes;	/* Out bytes */
  };
  
  /*
   *	This is the format the mroute daemon expects to see IGMP control
   *	data. Magically happens to be like an IP packet as per the original
   */
   

  struct igmpmsg {

  	__u32 unused1,unused2;
  	unsigned char im_msgtype;		/* What is this */
  	unsigned char im_mbz;			/* Must be zero */
  	unsigned char im_vif;			/* Interface (this ought to be a vifi_t!) */
  	unsigned char unused3;
  	struct in_addr im_src,im_dst;
  };
  
  /*
   *	That's all usermode folks
   */
  
  #ifdef __KERNEL__

  #include <linux/pim.h>

  #include <net/sock.h>

  #ifdef CONFIG_IP_MROUTE
  static inline int ip_mroute_opt(int opt)
  {
  	return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10);
  }
  #else
  static inline int ip_mroute_opt(int opt)
  {
  	return 0;
  }
  #endif

  #ifdef CONFIG_IP_MROUTE

  extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);

  extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
  extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);

  extern int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);

  extern int ip_mr_init(void);

  #else
  static inline
  int ip_mroute_setsockopt(struct sock *sock,

  			 int optname, char __user *optval, unsigned int optlen)

  {
  	return -ENOPROTOOPT;
  }
  
  static inline
  int ip_mroute_getsockopt(struct sock *sock,
  			 int optname, char __user *optval, int __user *optlen)
  {
  	return -ENOPROTOOPT;
  }
  
  static inline
  int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
  {
  	return -ENOIOCTLCMD;
  }
  
  static inline int ip_mr_init(void)
  {
  	return 0;
  }
  #endif

  struct vif_device {

  	struct net_device 	*dev;			/* Device we are using */
  	unsigned long	bytes_in,bytes_out;
  	unsigned long	pkt_in,pkt_out;		/* Statistics 			*/
  	unsigned long	rate_limit;		/* Traffic shaping (NI) 	*/
  	unsigned char	threshold;		/* TTL threshold 		*/
  	unsigned short	flags;			/* Control flags 		*/

  	__be32		local,remote;		/* Addresses(remote for tunnels)*/

  	int		link;			/* Physical interface index	*/
  };
  
  #define VIFF_STATIC 0x8000

  struct mfc_cache {

  	struct list_head list;

  	__be32 mfc_mcastgrp;			/* Group the entry belongs to 	*/
  	__be32 mfc_origin;			/* Source of packet 		*/

  	vifi_t mfc_parent;			/* Source interface		*/
  	int mfc_flags;				/* Flags on line		*/
  
  	union {
  		struct {
  			unsigned long expires;
  			struct sk_buff_head unresolved;	/* Unresolved buffers		*/
  		} unres;
  		struct {
  			unsigned long last_assert;
  			int minvif;
  			int maxvif;
  			unsigned long bytes;
  			unsigned long pkt;
  			unsigned long wrong_if;
  			unsigned char ttls[MAXVIFS];	/* TTL thresholds		*/
  		} res;
  	} mfc_un;

  	struct rcu_head	rcu;

  };
  
  #define MFC_STATIC		1
  #define MFC_NOTIFY		2
  
  #define MFC_LINES		64
  
  #ifdef __BIG_ENDIAN

  #define MFC_HASH(a,b)	(((((__force u32)(__be32)a)>>24)^(((__force u32)(__be32)b)>>26))&(MFC_LINES-1))

  #else

  #define MFC_HASH(a,b)	((((__force u32)(__be32)a)^(((__force u32)(__be32)b)>>2))&(MFC_LINES-1))

  #endif		
  
  #endif
  
  
  #define MFC_ASSERT_THRESH (3*HZ)		/* Maximal freq. of asserts */
  
  /*
   *	Pseudo messages used by mrouted
   */
  
  #define IGMPMSG_NOCACHE		1		/* Kern cache fill request to mrouted */
  #define IGMPMSG_WRONGVIF	2		/* For PIM assert processing (unused) */
  #define IGMPMSG_WHOLEPKT	3		/* For PIM Register processing */
  
  #ifdef __KERNEL__

  struct rtmsg;

  extern int ipmr_get_route(struct net *net, struct sk_buff *skb,

  			  __be32 saddr, __be32 daddr,

  			  struct rtmsg *rtm, int nowait);

  #endif
  
  #endif