#ifndef __LINUX_MROUTE6_H
#define __LINUX_MROUTE6_H

#include <linux/types.h>
#include <linux/sockios.h>

/*
 *        Based on the MROUTING 3.5 defines primarily to keep
 *        source compatibility with BSD.
 *
 *        See the pim6sd code for the original history.
 *
 *      Protocol Independent Multicast (PIM) data structures included
 *      Carlos Picoto (cap@di.fc.ul.pt)
 *
 */

#define MRT6_BASE        200
#define MRT6_INIT        (MRT6_BASE)        /* Activate the kernel mroute code         */
#define MRT6_DONE        (MRT6_BASE+1)        /* Shutdown the kernel mroute                */
#define MRT6_ADD_MIF        (MRT6_BASE+2)        /* Add a virtual interface                */
#define MRT6_DEL_MIF        (MRT6_BASE+3)        /* Delete a virtual interface                */
#define MRT6_ADD_MFC        (MRT6_BASE+4)        /* Add a multicast forwarding entry        */
#define MRT6_DEL_MFC        (MRT6_BASE+5)        /* Delete a multicast forwarding entry        */
#define MRT6_VERSION        (MRT6_BASE+6)        /* Get the kernel multicast version        */
#define MRT6_ASSERT        (MRT6_BASE+7)        /* Activate PIM assert mode                */
#define MRT6_PIM        (MRT6_BASE+8)        /* enable PIM code        */

#define SIOCGETMIFCNT_IN6        SIOCPROTOPRIVATE        /* IP protocol privates */
#define SIOCGETSGCNT_IN6        (SIOCPROTOPRIVATE+1)
#define SIOCGETRPF        (SIOCPROTOPRIVATE+2)

#define MAXMIFS                32
typedef unsigned long mifbitmap_t;        /* User mode code depends on this lot */
typedef unsigned short mifi_t;
#define ALL_MIFS        ((mifi_t)(-1))

#ifndef IF_SETSIZE
#define IF_SETSIZE        256
#endif

typedef        __u32                if_mask;
#define NIFBITS (sizeof(if_mask) * 8)        /* bits per mask */

#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
#define        DIV_ROUND_UP(x,y)        (((x) + ((y) - 1)) / (y))
#endif

typedef struct if_set {
        if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
} if_set;

#define IF_SET(n, p)    ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
#define IF_CLR(n, p)    ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
#define IF_ISSET(n, p)  ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
#define IF_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
#define IF_ZERO(p)      bzero(p, sizeof(*(p)))

/*
 *        Passed by mrouted for an MRT_ADD_MIF - again we use the
 *        mrouted 3.6 structures for compatibility
 */

struct mif6ctl {
        mifi_t        mif6c_mifi;                /* Index of MIF */
        unsigned char mif6c_flags;        /* MIFF_ flags */
        unsigned char vifc_threshold;        /* ttl limit */
        __u16         mif6c_pifi;                /* the index of the physical IF */
        unsigned int vifc_rate_limit;        /* Rate limiter values (NI) */
};

#define MIFF_REGISTER        0x1        /* register vif        */

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

struct mf6cctl
{
        struct sockaddr_in6 mf6cc_origin;                /* Origin of mcast        */
        struct sockaddr_in6 mf6cc_mcastgrp;                /* Group in question        */
        mifi_t        mf6cc_parent;                        /* Where it arrived        */
        struct if_set mf6cc_ifset;                /* Where it is going */
};

/*
 *        Group count retrieval for pim6sd
 */

struct sioc_sg_req6
{
        struct sockaddr_in6 src;
        struct sockaddr_in6 grp;
        unsigned long pktcnt;
        unsigned long bytecnt;
        unsigned long wrong_if;
};

/*
 *        To get vif packet counts
 */

struct sioc_mif_req6
{
        mifi_t        mifi;                /* Which iface */
        unsigned long icount;        /* In packets */
        unsigned long ocount;        /* Out packets */
        unsigned long ibytes;        /* In bytes */
        unsigned long obytes;        /* Out bytes */
};

/*
 *        That's all usermode folks
 */



/*
 * Structure used to communicate from kernel to multicast router.
 * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
 * used for IPv4 implementation). This is because this structure will be passed via an
 * IPv6 raw socket, on wich an application will only receiver the payload i.e the data after
 * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
 */

struct mrt6msg {
#define MRT6MSG_NOCACHE                1
#define MRT6MSG_WRONGMIF        2
#define MRT6MSG_WHOLEPKT        3                /* used for use level encap */
        __u8                im6_mbz;                /* must be zero                   */
        __u8                im6_msgtype;                /* what type of message    */
        __u16                im6_mif;                /* mif rec'd on                   */
        __u32                im6_pad;                /* padding for 64 bit arch */
        struct in6_addr        im6_src, im6_dst;
};

#endif