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#ifndef __LINUX_MROUTE_H

#define __LINUX_MROUTE_H

#include <linux/sockios.h>

#include <linux/types.h>

/*

 *      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 MRT_ADD_MFC_PROXY       (MRT_BASE+10)   /* Add a (*,*|G) mfc entry      */

#define MRT_DEL_MFC_PROXY       (MRT_BASE+11)   /* Del a (*,*|G) mfc entry      */

#define MRT_MAX         (MRT_BASE+11)

#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

 */

#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 */

#endif /* __LINUX_MROUTE_H */