include/uapi/linux/mroute6.h

   1 #ifndef _UAPI__LINUX_MROUTE6_H
   2 #define _UAPI__LINUX_MROUTE6_H
   3
   4 #include <linux/types.h>
   5 #include <linux/sockios.h>
   6
   7 /*
   8  *      Based on the MROUTING 3.5 defines primarily to keep
   9  *      source compatibility with BSD.
  10  *
  11  *      See the pim6sd code for the original history.
  12  *
  13  *      Protocol Independent Multicast (PIM) data structures included
  14  *      Carlos Picoto (cap@di.fc.ul.pt)
  15  *
  16  */
  17
  18 #define MRT6_BASE       200
  19 #define MRT6_INIT       (MRT6_BASE)     /* Activate the kernel mroute code      */
  20 #define MRT6_DONE       (MRT6_BASE+1)   /* Shutdown the kernel mroute           */
  21 #define MRT6_ADD_MIF    (MRT6_BASE+2)   /* Add a virtual interface              */
  22 #define MRT6_DEL_MIF    (MRT6_BASE+3)   /* Delete a virtual interface           */
  23 #define MRT6_ADD_MFC    (MRT6_BASE+4)   /* Add a multicast forwarding entry     */
  24 #define MRT6_DEL_MFC    (MRT6_BASE+5)   /* Delete a multicast forwarding entry  */
  25 #define MRT6_VERSION    (MRT6_BASE+6)   /* Get the kernel multicast version     */
  26 #define MRT6_ASSERT     (MRT6_BASE+7)   /* Activate PIM assert mode             */
  27 #define MRT6_PIM        (MRT6_BASE+8)   /* enable PIM code                      */
  28 #define MRT6_TABLE      (MRT6_BASE+9)   /* Specify mroute table ID              */
  29 #define MRT6_ADD_MFC_PROXY      (MRT6_BASE+10)  /* Add a (*,*|G) mfc entry      */
  30 #define MRT6_DEL_MFC_PROXY      (MRT6_BASE+11)  /* Del a (*,*|G) mfc entry      */
  31 #define MRT6_MAX        (MRT6_BASE+11)
  32
  33 #define SIOCGETMIFCNT_IN6       SIOCPROTOPRIVATE        /* IP protocol privates */
  34 #define SIOCGETSGCNT_IN6        (SIOCPROTOPRIVATE+1)
  35 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  36
  37 #define MAXMIFS         32
  38 typedef unsigned long mifbitmap_t;      /* User mode code depends on this lot */
  39 typedef unsigned short mifi_t;
  40 #define ALL_MIFS        ((mifi_t)(-1))
  41
  42 #ifndef IF_SETSIZE
  43 #define IF_SETSIZE      256
  44 #endif
  45
  46 typedef __u32           if_mask;
  47 #define NIFBITS (sizeof(if_mask) * 8)        /* bits per mask */
  48
  49 #if !defined(__KERNEL__)
  50 #if !defined(DIV_ROUND_UP)
  51 #define DIV_ROUND_UP(x,y)       (((x) + ((y) - 1)) / (y))
  52 #endif
  53 #endif
  54
  55 typedef struct if_set {
  56         if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
  57 } if_set;
  58
  59 #define IF_SET(n, p)    ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
  60 #define IF_CLR(n, p)    ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
  61 #define IF_ISSET(n, p)  ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
  62 #define IF_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
  63 #define IF_ZERO(p)      bzero(p, sizeof(*(p)))
  64
  65 /*
  66  *      Passed by mrouted for an MRT_ADD_MIF - again we use the
  67  *      mrouted 3.6 structures for compatibility
  68  */
  69
  70 struct mif6ctl {
  71         mifi_t  mif6c_mifi;             /* Index of MIF */
  72         unsigned char mif6c_flags;      /* MIFF_ flags */
  73         unsigned char vifc_threshold;   /* ttl limit */
  74         __u16    mif6c_pifi;            /* the index of the physical IF */
  75         unsigned int vifc_rate_limit;   /* Rate limiter values (NI) */
  76 };
  77
  78 #define MIFF_REGISTER   0x1     /* register vif */
  79
  80 /*
  81  *      Cache manipulation structures for mrouted and PIMd
  82  */
  83
  84 struct mf6cctl {
  85         struct sockaddr_in6 mf6cc_origin;               /* Origin of mcast      */
  86         struct sockaddr_in6 mf6cc_mcastgrp;             /* Group in question    */
  87         mifi_t  mf6cc_parent;                   /* Where it arrived     */
  88         struct if_set mf6cc_ifset;              /* Where it is going */
  89 };
  90
  91 /*
  92  *      Group count retrieval for pim6sd
  93  */
  94
  95 struct sioc_sg_req6 {
  96         struct sockaddr_in6 src;
  97         struct sockaddr_in6 grp;
  98         unsigned long pktcnt;
  99         unsigned long bytecnt;
 100         unsigned long wrong_if;
 101 };
 102
 103 /*
 104  *      To get vif packet counts
 105  */
 106
 107 struct sioc_mif_req6 {
 108         mifi_t  mifi;           /* Which iface */
 109         unsigned long icount;   /* In packets */
 110         unsigned long ocount;   /* Out packets */
 111         unsigned long ibytes;   /* In bytes */
 112         unsigned long obytes;   /* Out bytes */
 113 };
 114
 115 /*
 116  *      That's all usermode folks
 117  */
 118
 119
 120
 121 /*
 122  * Structure used to communicate from kernel to multicast router.
 123  * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
 124  * used for IPv4 implementation). This is because this structure will be passed via an
 125  * IPv6 raw socket, on which an application will only receiver the payload i.e the data after
 126  * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
 127  */
 128
 129 struct mrt6msg {
 130 #define MRT6MSG_NOCACHE         1
 131 #define MRT6MSG_WRONGMIF        2
 132 #define MRT6MSG_WHOLEPKT        3               /* used for use level encap */
 133         __u8            im6_mbz;                /* must be zero            */
 134         __u8            im6_msgtype;            /* what type of message    */
 135         __u16           im6_mif;                /* mif rec'd on            */
 136         __u32           im6_pad;                /* padding for 64 bit arch */
 137         struct in6_addr im6_src, im6_dst;
 138 };
 139
 140 #endif /* _UAPI__LINUX_MROUTE6_H */