include/uapi/linux/mroute.h

   1 #ifndef _UAPI__LINUX_MROUTE_H
   2 #define _UAPI__LINUX_MROUTE_H
   3
   4 #include <linux/sockios.h>
   5 #include <linux/types.h>
   6 #include <linux/in.h>           /* For struct in_addr. */
   7
   8 /* Based on the MROUTING 3.5 defines primarily to keep
   9  * source compatibility with BSD.
  10  *
  11  * See the mrouted 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 #define MRT_BASE        200
  18 #define MRT_INIT        (MRT_BASE)      /* Activate the kernel mroute code      */
  19 #define MRT_DONE        (MRT_BASE+1)    /* Shutdown the kernel mroute           */
  20 #define MRT_ADD_VIF     (MRT_BASE+2)    /* Add a virtual interface              */
  21 #define MRT_DEL_VIF     (MRT_BASE+3)    /* Delete a virtual interface           */
  22 #define MRT_ADD_MFC     (MRT_BASE+4)    /* Add a multicast forwarding entry     */
  23 #define MRT_DEL_MFC     (MRT_BASE+5)    /* Delete a multicast forwarding entry  */
  24 #define MRT_VERSION     (MRT_BASE+6)    /* Get the kernel multicast version     */
  25 #define MRT_ASSERT      (MRT_BASE+7)    /* Activate PIM assert mode             */
  26 #define MRT_PIM         (MRT_BASE+8)    /* enable PIM code                      */
  27 #define MRT_TABLE       (MRT_BASE+9)    /* Specify mroute table ID              */
  28 #define MRT_ADD_MFC_PROXY       (MRT_BASE+10)   /* Add a (*,*|G) mfc entry      */
  29 #define MRT_DEL_MFC_PROXY       (MRT_BASE+11)   /* Del a (*,*|G) mfc entry      */
  30 #define MRT_MAX         (MRT_BASE+11)
  31
  32 #define SIOCGETVIFCNT   SIOCPROTOPRIVATE        /* IP protocol privates */
  33 #define SIOCGETSGCNT    (SIOCPROTOPRIVATE+1)
  34 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  35
  36 #define MAXVIFS         32
  37 typedef unsigned long vifbitmap_t;      /* User mode code depends on this lot */
  38 typedef unsigned short vifi_t;
  39 #define ALL_VIFS        ((vifi_t)(-1))
  40
  41 /* Same idea as select */
  42
  43 #define VIFM_SET(n,m)   ((m)|=(1<<(n)))
  44 #define VIFM_CLR(n,m)   ((m)&=~(1<<(n)))
  45 #define VIFM_ISSET(n,m) ((m)&(1<<(n)))
  46 #define VIFM_CLRALL(m)  ((m)=0)
  47 #define VIFM_COPY(mfrom,mto)    ((mto)=(mfrom))
  48 #define VIFM_SAME(m1,m2)        ((m1)==(m2))
  49
  50 /* Passed by mrouted for an MRT_ADD_VIF - again we use the
  51  * mrouted 3.6 structures for compatibility
  52  */
  53 struct vifctl {
  54         vifi_t  vifc_vifi;              /* Index of VIF */
  55         unsigned char vifc_flags;       /* VIFF_ flags */
  56         unsigned char vifc_threshold;   /* ttl limit */
  57         unsigned int vifc_rate_limit;   /* Rate limiter values (NI) */
  58         union {
  59                 struct in_addr vifc_lcl_addr;     /* Local interface address */
  60                 int            vifc_lcl_ifindex;  /* Local interface index   */
  61         };
  62         struct in_addr vifc_rmt_addr;   /* IPIP tunnel addr */
  63 };
  64
  65 #define VIFF_TUNNEL             0x1     /* IPIP tunnel */
  66 #define VIFF_SRCRT              0x2     /* NI */
  67 #define VIFF_REGISTER           0x4     /* register vif */
  68 #define VIFF_USE_IFINDEX        0x8     /* use vifc_lcl_ifindex instead of
  69                                            vifc_lcl_addr to find an interface */
  70
  71 /* Cache manipulation structures for mrouted and PIMd */
  72 struct mfcctl {
  73         struct in_addr mfcc_origin;             /* Origin of mcast      */
  74         struct in_addr mfcc_mcastgrp;           /* Group in question    */
  75         vifi_t  mfcc_parent;                    /* Where it arrived     */
  76         unsigned char mfcc_ttls[MAXVIFS];       /* Where it is going    */
  77         unsigned int mfcc_pkt_cnt;              /* pkt count for src-grp */
  78         unsigned int mfcc_byte_cnt;
  79         unsigned int mfcc_wrong_if;
  80         int          mfcc_expire;
  81 };
  82
  83 /*  Group count retrieval for mrouted */
  84 struct sioc_sg_req {
  85         struct in_addr src;
  86         struct in_addr grp;
  87         unsigned long pktcnt;
  88         unsigned long bytecnt;
  89         unsigned long wrong_if;
  90 };
  91
  92 /* To get vif packet counts */
  93 struct sioc_vif_req {
  94         vifi_t  vifi;           /* Which iface */
  95         unsigned long icount;   /* In packets */
  96         unsigned long ocount;   /* Out packets */
  97         unsigned long ibytes;   /* In bytes */
  98         unsigned long obytes;   /* Out bytes */
  99 };
 100
 101 /* This is the format the mroute daemon expects to see IGMP control
 102  * data. Magically happens to be like an IP packet as per the original
 103  */
 104 struct igmpmsg {
 105         __u32 unused1,unused2;
 106         unsigned char im_msgtype;               /* What is this */
 107         unsigned char im_mbz;                   /* Must be zero */
 108         unsigned char im_vif;                   /* Interface (this ought to be a vifi_t!) */
 109         unsigned char unused3;
 110         struct in_addr im_src,im_dst;
 111 };
 112
 113 /* That's all usermode folks */
 114
 115 #define MFC_ASSERT_THRESH (3*HZ)                /* Maximal freq. of asserts */
 116
 117 /* Pseudo messages used by mrouted */
 118 #define IGMPMSG_NOCACHE         1               /* Kern cache fill request to mrouted */
 119 #define IGMPMSG_WRONGVIF        2               /* For PIM assert processing (unused) */
 120 #define IGMPMSG_WHOLEPKT        3               /* For PIM Register processing */
 121
 122 #endif /* _UAPI__LINUX_MROUTE_H */