include/uapi/linux/mroute6.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI__LINUX_MROUTE6_H
   3 #define _UAPI__LINUX_MROUTE6_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/types.h>
   7 #include <linux/sockios.h>
   8 #include <linux/in6.h>          /* For struct sockaddr_in6. */
   9
  10 /*
  11  *      Based on the MROUTING 3.5 defines primarily to keep
  12  *      source compatibility with BSD.
  13  *
  14  *      See the pim6sd code for the original history.
  15  *
  16  *      Protocol Independent Multicast (PIM) data structures included
  17  *      Carlos Picoto (cap@di.fc.ul.pt)
  18  *
  19  */
  20
  21 #define MRT6_BASE       200
  22 #define MRT6_INIT       (MRT6_BASE)     /* Activate the kernel mroute code      */
  23 #define MRT6_DONE       (MRT6_BASE+1)   /* Shutdown the kernel mroute           */
  24 #define MRT6_ADD_MIF    (MRT6_BASE+2)   /* Add a virtual interface              */
  25 #define MRT6_DEL_MIF    (MRT6_BASE+3)   /* Delete a virtual interface           */
  26 #define MRT6_ADD_MFC    (MRT6_BASE+4)   /* Add a multicast forwarding entry     */
  27 #define MRT6_DEL_MFC    (MRT6_BASE+5)   /* Delete a multicast forwarding entry  */
  28 #define MRT6_VERSION    (MRT6_BASE+6)   /* Get the kernel multicast version     */
  29 #define MRT6_ASSERT     (MRT6_BASE+7)   /* Activate PIM assert mode             */
  30 #define MRT6_PIM        (MRT6_BASE+8)   /* enable PIM code                      */
  31 #define MRT6_TABLE      (MRT6_BASE+9)   /* Specify mroute table ID              */
  32 #define MRT6_ADD_MFC_PROXY      (MRT6_BASE+10)  /* Add a (*,*|G) mfc entry      */
  33 #define MRT6_DEL_MFC_PROXY      (MRT6_BASE+11)  /* Del a (*,*|G) mfc entry      */
  34 #define MRT6_MAX        (MRT6_BASE+11)
  35
  36 #define SIOCGETMIFCNT_IN6       SIOCPROTOPRIVATE        /* IP protocol privates */
  37 #define SIOCGETSGCNT_IN6        (SIOCPROTOPRIVATE+1)
  38 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  39
  40 #define MAXMIFS         32
  41 typedef unsigned long mifbitmap_t;      /* User mode code depends on this lot */
  42 typedef unsigned short mifi_t;
  43 #define ALL_MIFS        ((mifi_t)(-1))
  44
  45 #ifndef IF_SETSIZE
  46 #define IF_SETSIZE      256
  47 #endif
  48
  49 typedef __u32           if_mask;
  50 #define NIFBITS (sizeof(if_mask) * 8)        /* bits per mask */
  51
  52 typedef struct if_set {
  53         if_mask ifs_bits[__KERNEL_DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];
  54 } if_set;
  55
  56 #define IF_SET(n, p)    ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
  57 #define IF_CLR(n, p)    ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
  58 #define IF_ISSET(n, p)  ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
  59 #define IF_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
  60 #define IF_ZERO(p)      bzero(p, sizeof(*(p)))
  61
  62 /*
  63  *      Passed by mrouted for an MRT_ADD_MIF - again we use the
  64  *      mrouted 3.6 structures for compatibility
  65  */
  66
  67 struct mif6ctl {
  68         mifi_t  mif6c_mifi;             /* Index of MIF */
  69         unsigned char mif6c_flags;      /* MIFF_ flags */
  70         unsigned char vifc_threshold;   /* ttl limit */
  71         __u16    mif6c_pifi;            /* the index of the physical IF */
  72         unsigned int vifc_rate_limit;   /* Rate limiter values (NI) */
  73 };
  74
  75 #define MIFF_REGISTER   0x1     /* register vif */
  76
  77 /*
  78  *      Cache manipulation structures for mrouted and PIMd
  79  */
  80
  81 struct mf6cctl {
  82         struct sockaddr_in6 mf6cc_origin;               /* Origin of mcast      */
  83         struct sockaddr_in6 mf6cc_mcastgrp;             /* Group in question    */
  84         mifi_t  mf6cc_parent;                   /* Where it arrived     */
  85         struct if_set mf6cc_ifset;              /* Where it is going */
  86 };
  87
  88 /*
  89  *      Group count retrieval for pim6sd
  90  */
  91
  92 struct sioc_sg_req6 {
  93         struct sockaddr_in6 src;
  94         struct sockaddr_in6 grp;
  95         unsigned long pktcnt;
  96         unsigned long bytecnt;
  97         unsigned long wrong_if;
  98 };
  99
 100 /*
 101  *      To get vif packet counts
 102  */
 103
 104 struct sioc_mif_req6 {
 105         mifi_t  mifi;           /* Which iface */
 106         unsigned long icount;   /* In packets */
 107         unsigned long ocount;   /* Out packets */
 108         unsigned long ibytes;   /* In bytes */
 109         unsigned long obytes;   /* Out bytes */
 110 };
 111
 112 /*
 113  *      That's all usermode folks
 114  */
 115
 116
 117
 118 /*
 119  * Structure used to communicate from kernel to multicast router.
 120  * We'll overlay the structure onto an MLD header (not an IPv6 heder like igmpmsg{}
 121  * used for IPv4 implementation). This is because this structure will be passed via an
 122  * IPv6 raw socket, on which an application will only receiver the payload i.e the data after
 123  * the IPv6 header and all the extension headers. (See section 3 of RFC 3542)
 124  */
 125
 126 struct mrt6msg {
 127 #define MRT6MSG_NOCACHE         1
 128 #define MRT6MSG_WRONGMIF        2
 129 #define MRT6MSG_WHOLEPKT        3               /* used for use level encap */
 130         __u8            im6_mbz;                /* must be zero            */
 131         __u8            im6_msgtype;            /* what type of message    */
 132         __u16           im6_mif;                /* mif rec'd on            */
 133         __u32           im6_pad;                /* padding for 64 bit arch */
 134         struct in6_addr im6_src, im6_dst;
 135 };
 136
 137 /* ip6mr netlink cache report attributes */
 138 enum {
 139         IP6MRA_CREPORT_UNSPEC,
 140         IP6MRA_CREPORT_MSGTYPE,
 141         IP6MRA_CREPORT_MIF_ID,
 142         IP6MRA_CREPORT_SRC_ADDR,
 143         IP6MRA_CREPORT_DST_ADDR,
 144         IP6MRA_CREPORT_PKT,
 145         __IP6MRA_CREPORT_MAX
 146 };
 147 #define IP6MRA_CREPORT_MAX (__IP6MRA_CREPORT_MAX - 1)
 148
 149 #endif /* _UAPI__LINUX_MROUTE6_H */