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 1.3 1994/06/09 16:04:05 brezak 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_char uv_threshold; /* min ttl required to forward on vif */ 24 u_long uv_lcl_addr; /* local address of this vif */ 25 u_long uv_rmt_addr; /* remote end-point addr (tunnels only) */ 26 u_long uv_subnet; /* subnet number (phyints only) */ 27 u_long uv_subnetmask; /* subnet mask (phyints only) */ 28 u_long uv_subnetbcast;/* subnet broadcast addr (phyints only) */ 29 char uv_name[IFNAMSIZ]; /* interface name */ 30 struct listaddr *uv_groups; /* list of local groups (phyints only) */ 31 struct listaddr *uv_neighbors; /* list of neighboring routers */ 32 }; 33 34 #define VIFF_KERNEL_FLAGS (VIFF_TUNNEL|VIFF_SRCRT) 35 #define VIFF_DOWN 0x0100 /* kernel state of interface */ 36 #define VIFF_DISABLED 0x0200 /* administratively disabled */ 37 #define VIFF_QUERIER 0x0400 /* I am the subnet's querier */ 38 39 40 struct listaddr { 41 struct listaddr *al_next; /* link to next addr, MUST BE FIRST */ 42 u_long al_addr; /* local group or neighbor address */ 43 u_long al_timer; /* for timing out group or neighbor */ 44 }; 45 46 47 #define NO_VIF ((vifi_t)MAXVIFS) /* An invalid vif index */ 48