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vif.h revision 1.4 
      1 /*
      2  * The mrouted program is covered by the license in the accompanying file
      3  * named "LICENSE".  Use of the mrouted program represents acceptance of
      4  * the terms and conditions listed in that file.
      5  *
      6  * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
      7  * Leland Stanford Junior University.
      8  *
      9  *
     10  * $Id: vif.h,v 1.4 1995/06/01 02:26:13 mycroft Exp $
     11  */
     12 
     13 /*
     14  * User level Virtual Interface structure
     15  *
     16  * A "virtual interface" is either a physical, multicast-capable interface
     17  * (called a "phyint") or a virtual point-to-point link (called a "tunnel").
     18  * (Note: all addresses, subnet numbers and masks are kept in NETWORK order.)
     19  */
     20 struct uvif {
     21     u_short	     uv_flags;	    /* VIFF_ flags defined below            */
     22     u_char	     uv_metric;     /* cost of this vif                     */
     23     u_int	     uv_rate_limit; /* rate limit on this vif               */
     24     u_char	     uv_threshold;  /* min ttl required to forward on vif   */
     25     u_int32_t	     uv_lcl_addr;   /* local address of this vif            */
     26     u_int32_t	     uv_rmt_addr;   /* remote end-point addr (tunnels only) */
     27     u_int32_t	     uv_subnet;     /* subnet number         (phyints only) */
     28     u_int32_t	     uv_subnetmask; /* subnet mask           (phyints only) */
     29     u_int32_t	     uv_subnetbcast;/* subnet broadcast addr (phyints only) */
     30     char	     uv_name[IFNAMSIZ]; /* interface name                   */
     31     struct listaddr *uv_groups;     /* list of local groups  (phyints only) */
     32     struct listaddr *uv_neighbors;  /* list of neighboring routers          */
     33     struct vif_acl  *uv_acl;	    /* access control list of groups        */
     34     int		     uv_leaf_timer; /* time until this vif is considrd leaf */
     35     struct phaddr   *uv_addrs;	    /* Additional subnets on this vif       */
     36 };
     37 
     38 #define VIFF_KERNEL_FLAGS	(VIFF_TUNNEL|VIFF_SRCRT)
     39 #define VIFF_DOWN		0x0100	       /* kernel state of interface */
     40 #define VIFF_DISABLED		0x0200	       /* administratively disabled */
     41 #define VIFF_QUERIER		0x0400	       /* I am the subnet's querier */
     42 #define VIFF_ONEWAY		0x0800         /* Maybe one way interface   */
     43 #define VIFF_LEAF		0x1000         /* all neighbors are leaves  */
     44 
     45 struct phaddr {
     46     struct phaddr   *pa_next;
     47     u_long	     pa_addr;
     48     u_long	     pa_mask;
     49 };
     50 
     51 struct vif_acl {
     52     struct vif_acl  *acl_next;	    /* next acl member         */
     53     u_int32_t	     acl_addr;	    /* Group address           */
     54     u_int32_t	     acl_mask;	    /* Group addr. mask        */
     55 };
     56 
     57 struct listaddr {
     58     struct listaddr *al_next;		/* link to next addr, MUST BE FIRST */
     59     u_int32_t	     al_addr;		/* local group or neighbor address  */
     60     u_long	     al_timer;		/* for timing out group or neighbor */
     61     time_t	     al_ctime;		/* neighbor creation time	    */
     62     u_int32_t	     al_genid;		/* generation id for neighbor       */
     63     u_char	     al_pv;		/* router protocol version	    */
     64     u_char	     al_mv;		/* router mrouted version	    */
     65     u_long           al_timerid;        /* returned by set timer            */
     66     u_long	     al_query;		/* second query in case of leave    */
     67     u_short          al_old;            /* if old memberships are present   */
     68     u_short          al_last;		/* # of query's since last old rep  */
     69     u_char	     al_flags;		/* flags related to this neighbor   */
     70 };
     71 
     72 #define NF_LEAF			0x01	/* This neighbor is a leaf */
     73 #define NF_PRUNE		0x02	/* This neighbor understands prunes */
     74 #define NF_GENID		0x04	/* I supply genid & rtrlist in probe*/
     75 #define NF_MTRACE		0x08	/* I can understand mtrace requests */
     76 
     77 #define NO_VIF		((vifi_t)MAXVIFS)  /* An invalid vif index */
     78