LXR linux/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
  36typedef unsigned long vifbitmap_t;      /* User mode code depends on this lot */
  37typedef 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 */
  52struct 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 */
  71struct 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 */
  83struct 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 */
  92struct 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 */
 103struct 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 */
 122