/* * Copyright (c) 1998 by the University of Southern California. * All rights reserved. * * Permission to use, copy, modify, and distribute this software and * its documentation in source and binary forms for lawful * purposes and without fee is hereby granted, provided * that the above copyright notice appear in all copies and that both * the copyright notice and this permission notice appear in supporting * documentation, and that any documentation, advertising materials, * and other materials related to such distribution and use acknowledge * that the software was developed by the University of Southern * California and/or Information Sciences Institute. * The name of the University of Southern California may not * be used to endorse or promote products derived from this software * without specific prior written permission. * * THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY REPRESENTATIONS * ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS * PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND * NON-INFRINGEMENT. * * IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, * TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH, * THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Other copyrights might apply to parts of this software and are so * noted when applicable. */ /* * Questions concerning this software should be directed to * Mickael Hoerdt (hoerdt@clarinet.u-strasbg.fr) LSIIT Strasbourg. * */ /* * This program has been derived from pim6dd. * The pim6dd program is covered by the license in the accompanying file * named "LICENSE.pim6dd". */ /* * This program has been derived from pimd. * The pimd program is covered by the license in the accompanying file * named "LICENSE.pimd". * */ /* * Part of this program has been derived from mrouted. * The mrouted program is covered by the license in the accompanying file * named "LICENSE.mrouted". * * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of * Leland Stanford Junior University. * * $FreeBSD$ */ #ifndef VIF_H #define VIF_H #include #include #include #include #include #include #include #include #include #include "defs.h" extern int total_interfaces; extern int udp_socket; extern struct uvif uvifs[]; extern vifi_t numvifs; extern int vifs_down; extern int phys_vif; extern vifi_t reg_vif_num; #define NO_VIF ((vifi_t)MAXVIFS) /* An invalid vif index */ #define DEFAULT_METRIC 1 #define VIFF_DOWN 0x000100 #define VIFF_DISABLED 0x000200 #define VIFF_QUERIER 0x000400 #define VIFF_REXMIT_PRUNES 0x004000 #define VIFF_DR 0x040000 #define VIFF_NONBRS 0x080000 #define VIFF_PIM_NBR 0x200000 #define VIFF_POINT_TO_POINT 0x400000 #define NBRTYPE u_long #define NBRBITS sizeof(NBRTYPE) *8 extern if_set if_nullset; #define IF_ISEMPTY(p) (memcmp((p), &if_nullset, sizeof(if_nullset)) == 0) #define IF_SAME(p1, p2) (memcmp((p1),(p2),sizeof(*(p1))) == 0) #define IF_CLR_MASK(p, mask) \ {\ int idx;\ for (idx = 0; idx < sizeof(*(p))/sizeof(fd_mask); idx++) {\ (p)->ifs_bits[idx] &= ~((mask)->ifs_bits[idx]);\ }\ } #define IF_MERGE(p1, p2, result) \ {\ int idx;\ for (idx = 0; idx < sizeof(*(p1))/sizeof(fd_mask); idx++) {\ (result)->ifs_bits[idx] = (p1)->ifs_bits[idx]|(p2)->ifs_bits[idx]; \ }\ } typedef struct { NBRTYPE hi; NBRTYPE lo; } nbrbitmap_t; struct vf_element { struct vf_element *vfe_next; struct sockaddr_in6 *vfe_addr; struct in6_addr vfe_mask; int vfe_flags; #define VFRF_EXACT 0x0001 }; #define VFT_ACCEPT 1 #define VFT_DENY 2 #define VFF_BIDIR 1 struct vif_filter { int vf_type; int vf_flags; struct vf_element *vf_filter; }; struct listaddr { struct listaddr *al_next; /* link to next addr, MUST BE FIRST */ struct sockaddr_in6 al_addr; /* local group or neighbor address */ u_long al_timer; /* for timing out group or neighbor */ time_t al_ctime; /* entry creation time */ union { u_int32 alu_genid; /* generation id for neighbor */ struct sockaddr_in6 alu_reporter; /* a host which reported membership */ } al_alu; u_char al_pv; /* router protocol version */ u_char al_mv; /* router mrouted version */ u_char al_old; /* time since heard old report */ u_char al_index; /* neighbor index */ u_long al_timerid; /* timer for group membership */ u_long al_query; /* timer for repeated leave query */ u_int16 al_flags; /* flags related to this neighbor */ }; #define al_genid al_alu.alu_genid #define al_reporter al_alu.alu_reporter /* * User level Virtual Interface structure * * A "virtual interface" is either a physical, multicast-capable interface * (called a "phyint"), a virtual point-to-point link (called a "tunnel") * or a "register vif" used by PIM. The register vif is used by the * Designated Router (DR) to send encapsulated data packets to the * Rendevous Point (RP) for a particular group. The data packets are * encapsulated in PIM messages (IPPROTO_PIM = 103) and then unicast to * the RP. * (Note: all addresses, subnet numbers and masks are kept in NETWORK order.) */ struct uvif { u_int uv_flags; u_char uv_metric; /* VIFF_ flags defined below */ u_char uv_admetric; /* advertised cost of this vif */ u_int uv_rate_limit; /* rate limit on this vif */ struct phaddr *uv_linklocal; /* link-local address of this vif */ struct sockaddr_in6 uv_rmt_addr;/* remote end-point addr (tunnels only) */ struct sockaddr_in6 uv_dst_addr;/* destination for PIM messages */ struct sockaddr_in6 uv_prefix; /* prefix (phyints only) */ struct in6_addr uv_subnetmask; /* subnet mask (phyints only) */ char uv_name[IFNAMSIZ]; /* interface name */ u_int uv_ifindex; /* index of the interface */ u_int uv_siteid; /* index of the site on the interface */ struct listaddr *uv_groups; /* list of local groups (phyints only) */ struct lisaddr *uv_dvmrp_neighbors; nbrbitmap_t uv_nbrmap; /* bitmap of active neighboring routers */ struct listaddr *uv_querier; /* MLD querier on vif */ int uv_prune_lifetime; /* Prune lifetime or 0 for default */ struct vif_acl *uv_acl; /* access control list of groups */ int uv_leaftimer; /* time until this vif is considrd leaf */ struct phaddr *uv_addrs; /* Additional addresses on this vif */ struct vif_filter *uvfilter; /* Route filters on this vif */ u_int16 uv_pim_hello_timer; /* timer for sending PIM hello msgs */ u_int16 uv_gq_timer; /* Group Query timer */ u_int16 uv_jp_timer; /* Join/Prune timer */ int uv_local_pref; /* default local preference for assert */ int uv_local_metric; /* default local metric for assert */ struct pim_nbr_entry *uv_pim_neighbors; /* list of PIM nbr routers */ void *config_attr; /* temporary buffer while parsing config */ /* the followings are to collect statistics */ /* incoming PIM6 packets on this interface */ u_quad_t uv_in_pim6_hello; u_quad_t uv_in_pim6_join_prune; u_quad_t uv_in_pim6_bootsrap; u_quad_t uv_in_pim6_assert; /* outgoing PIM6 packets on this interface */ u_quad_t uv_out_pim6_hello; u_quad_t uv_out_pim6_join_prune; u_quad_t uv_out_pim6_bootsrap; u_quad_t uv_out_pim6_assert; /* incoming MLD packets on this interface */ u_quad_t uv_in_mld_query; u_quad_t uv_in_mld_report; u_quad_t uv_in_mld_done; /* outgoing MLD packets on this interface */ u_quad_t uv_out_mld_query; u_quad_t uv_out_mld_report; u_quad_t uv_out_mld_done; /* statistics about the forwarding cache in kernel */ u_quad_t uv_cache_miss; u_quad_t uv_cache_notcreated; /* occurrences of timeouts */ u_quad_t uv_pim6_nbr_timo; u_quad_t uv_listener_timo; u_quad_t uv_querier_timo; u_quad_t uv_outif_timo; /* outgoing interfaces timers */ }; struct phaddr { struct phaddr *pa_next; struct sockaddr_in6 pa_addr; struct sockaddr_in6 pa_prefix; struct in6_addr pa_subnetmask; }; /* The Access Control List (list with scoped addresses) member */ #define VIFF_NOLISTENER 0x800000 /* no listener on the link */ struct vif_acl { struct vif_acl *acl_next; struct sockaddr_in6 acl_addr; struct in6_addr acl_mask; }; /* * Used to get the RPF neighbor and IIF info * for a given source from the unicast routing table. */ struct rpfctl { struct sockaddr_in6 source; /* the source for which we want iif and rpfnbr */ struct sockaddr_in6 rpfneighbor;/* next hop towards the source */ vifi_t iif; /* the incoming interface to reach the next hop */ }; extern void init_vifs __P((void)); extern void stop_all_vifs __P((void)); extern void check_vif_state __P((void)); struct sockaddr_in6 * max_global_address __P((void)); struct sockaddr_in6 * uv_global __P((vifi_t)); extern vifi_t local_address __P((struct sockaddr_in6 *src)); struct sockaddr_in6 * local_iface __P((char *ifname)); extern vifi_t find_vif_direct __P((struct sockaddr_in6 *src)); extern vifi_t find_vif_direct_local __P((struct sockaddr_in6 *src)); extern int vif_forwarder __P((if_set *p1 ,if_set *p2)); extern if_set *vif_and __P((if_set *p1, if_set *p2, if_set *result)); extern if_set *vif_xor __P((if_set *p1, if_set *p2, if_set *result)); extern struct uvif *find_vif __P((char *ifname)); #endif