include/uapi/linux/mroute6.h

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