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
   7 /* Based on the MROUTING 3.5 defines primarily to keep
   8  * source compatibility with BSD.
   9  *
  10  * See the mrouted code for the original history.
  11  *
  12  * Protocol Independent Multicast (PIM) data structures included
  13  * Carlos Picoto (cap@di.fc.ul.pt)
  14  */
  15
  16 #define MRT_BASE        200
  17 #define MRT_INIT        (MRT_BASE)      /* Activate the kernel mroute code      */
  18 #define MRT_DONE        (MRT_BASE+1)    /* Shutdown the kernel mroute           */
  19 #define MRT_ADD_VIF     (MRT_BASE+2)    /* Add a virtual interface              */
  20 #define MRT_DEL_VIF     (MRT_BASE+3)    /* Delete a virtual interface           */
  21 #define MRT_ADD_MFC     (MRT_BASE+4)    /* Add a multicast forwarding entry     */
  22 #define MRT_DEL_MFC     (MRT_BASE+5)    /* Delete a multicast forwarding entry  */
  23 #define MRT_VERSION     (MRT_BASE+6)    /* Get the kernel multicast version     */
  24 #define MRT_ASSERT      (MRT_BASE+7)    /* Activate PIM assert mode             */
  25 #define MRT_PIM         (MRT_BASE+8)    /* enable PIM code                      */
  26 #define MRT_TABLE       (MRT_BASE+9)    /* Specify mroute table ID              */
  27 #define MRT_ADD_MFC_PROXY       (MRT_BASE+10)   /* Add a (*,*|G) mfc entry      */
  28 #define MRT_DEL_MFC_PROXY       (MRT_BASE+11)   /* Del a (*,*|G) mfc entry      */
  29 #define MRT_MAX         (MRT_BASE+11)
  30
  31 #define SIOCGETVIFCNT   SIOCPROTOPRIVATE        /* IP protocol privates */
  32 #define SIOCGETSGCNT    (SIOCPROTOPRIVATE+1)
  33 #define SIOCGETRPF      (SIOCPROTOPRIVATE+2)
  34
  35 #define MAXVIFS         32
  36 typedef unsigned long vifbitmap_t;      /* User mode code depends on this lot */
  37 typedef unsigned short vifi_t;
  38 #define ALL_VIFS        ((vifi_t)(-1))
  39
  40 /* Same idea as select */
  41
  42 #define VIFM_SET(n,m)   ((m)|=(1<<(n)))
  43 #define VIFM_CLR(n,m)   ((m)&=~(1<<(n)))
  44 #define VIFM_ISSET(n,m) ((m)&(1<<(n)))
  45 #define VIFM_CLRALL(m)  ((m)=0)
  46 #define VIFM_COPY(mfrom,mto)    ((mto)=(mfrom))
  47 #define VIFM_SAME(m1,m2)        ((m1)==(m2))
  48
  49 /* Passed by mrouted for an MRT_ADD_VIF - again we use the
  50  * mrouted 3.6 structures for compatibility
  51  */
  52 struct vifctl {
  53         vifi_t  vifc_vifi;              /* Index of VIF */
  54         unsigned char vifc_flags;       /* VIFF_ flags */
  55         unsigned char vifc_threshold;   /* ttl limit */
  56         unsigned int vifc_rate_limit;   /* Rate limiter values (NI) */
  57         union {
  58                 struct in_addr vifc_lcl_addr;     /* Local interface address */
  59                 int            vifc_lcl_ifindex;  /* Local interface index   */
  60         };
  61         struct in_addr vifc_rmt_addr;   /* IPIP tunnel addr */
  62 };
  63
  64 #define VIFF_TUNNEL             0x1     /* IPIP tunnel */
  65 #define VIFF_SRCRT              0x2     /* NI */
  66 #define VIFF_REGISTER           0x4     /* register vif */
  67 #define VIFF_USE_IFINDEX        0x8     /* use vifc_lcl_ifindex instead of
  68                                            vifc_lcl_addr to find an interface */
  69
  70 /* Cache manipulation structures for mrouted and PIMd */
  71 struct mfcctl {
  72         struct in_addr mfcc_origin;             /* Origin of mcast      */
  73         struct in_addr mfcc_mcastgrp;           /* Group in question    */
  74         vifi_t  mfcc_parent;                    /* Where it arrived     */
  75         unsigned char mfcc_ttls[MAXVIFS];       /* Where it is going    */
  76         unsigned int mfcc_pkt_cnt;              /* pkt count for src-grp */
  77         unsigned int mfcc_byte_cnt;
  78         unsigned int mfcc_wrong_if;
  79         int          mfcc_expire;
  80 };
  81
  82 /*  Group count retrieval for mrouted */
  83 struct sioc_sg_req {
  84         struct in_addr src;
  85         struct in_addr grp;
  86         unsigned long pktcnt;
  87         unsigned long bytecnt;
  88         unsigned long wrong_if;
  89 };
  90
  91 /* To get vif packet counts */
  92 struct sioc_vif_req {
  93         vifi_t  vifi;           /* Which iface */
  94         unsigned long icount;   /* In packets */
  95         unsigned long ocount;   /* Out packets */
  96         unsigned long ibytes;   /* In bytes */
  97         unsigned long obytes;   /* Out bytes */
  98 };
  99
 100 /* This is the format the mroute daemon expects to see IGMP control
 101  * data. Magically happens to be like an IP packet as per the original
 102  */
 103 struct igmpmsg {
 104         __u32 unused1,unused2;
 105         unsigned char im_msgtype;               /* What is this */
 106         unsigned char im_mbz;                   /* Must be zero */
 107         unsigned char im_vif;                   /* Interface (this ought to be a vifi_t!) */
 108         unsigned char unused3;
 109         struct in_addr im_src,im_dst;
 110 };
 111
 112 /* That's all usermode folks */
 113
 114 #define MFC_ASSERT_THRESH (3*HZ)                /* Maximal freq. of asserts */
 115
 116 /* Pseudo messages used by mrouted */
 117 #define IGMPMSG_NOCACHE         1               /* Kern cache fill request to mrouted */
 118 #define IGMPMSG_WRONGVIF        2               /* For PIM assert processing (unused) */
 119 #define IGMPMSG_WHOLEPKT        3               /* For PIM Register processing */
 120
 121 #endif /* _UAPI__LINUX_MROUTE_H */