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278 lines
9.7 KiB
C
278 lines
9.7 KiB
C
/*
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* Copyright (c) 1998 by the University of Southern California.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation in source and binary forms for lawful
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* purposes and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies and that both
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* the copyright notice and this permission notice appear in supporting
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* documentation, and that any documentation, advertising materials,
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* and other materials related to such distribution and use acknowledge
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* that the software was developed by the University of Southern
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* California and/or Information Sciences Institute.
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* The name of the University of Southern California may not
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY REPRESENTATIONS
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* ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
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* PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
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* NON-INFRINGEMENT.
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*
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* IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
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* TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
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* THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Other copyrights might apply to parts of this software and are so
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* noted when applicable.
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*/
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/*
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* Questions concerning this software should be directed to
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* Mickael Hoerdt (hoerdt@clarinet.u-strasbg.fr) LSIIT Strasbourg.
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*
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*/
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/*
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* This program has been derived from pim6dd.
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* The pim6dd program is covered by the license in the accompanying file
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* named "LICENSE.pim6dd".
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*/
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/*
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* This program has been derived from pimd.
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* The pimd program is covered by the license in the accompanying file
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* named "LICENSE.pimd".
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*
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*/
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/*
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* Part of this program has been derived from mrouted.
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* The mrouted program is covered by the license in the accompanying file
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* named "LICENSE.mrouted".
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*
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* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
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* Leland Stanford Junior University.
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*
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* $FreeBSD$
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*/
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#ifndef VIF_H
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#define VIF_H
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/route.h>
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#include <net/if.h>
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#include <netinet6/ip6_mroute.h>
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#include <netinet/ip_mroute.h>
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#include "defs.h"
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extern int total_interfaces;
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extern int udp_socket;
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extern struct uvif uvifs[];
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extern vifi_t numvifs;
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extern int vifs_down;
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extern int phys_vif;
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extern vifi_t reg_vif_num;
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#define NO_VIF ((vifi_t)MAXVIFS) /* An invalid vif index */
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#define DEFAULT_METRIC 1
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#define VIFF_DOWN 0x000100
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#define VIFF_DISABLED 0x000200
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#define VIFF_QUERIER 0x000400
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#define VIFF_REXMIT_PRUNES 0x004000
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#define VIFF_DR 0x040000
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#define VIFF_NONBRS 0x080000
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#define VIFF_PIM_NBR 0x200000
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#define VIFF_POINT_TO_POINT 0x400000
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#define NBRTYPE u_long
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#define NBRBITS sizeof(NBRTYPE) *8
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extern if_set if_nullset;
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#define IF_ISEMPTY(p) (memcmp((p), &if_nullset, sizeof(if_nullset)) == 0)
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#define IF_SAME(p1, p2) (memcmp((p1),(p2),sizeof(*(p1))) == 0)
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#define IF_CLR_MASK(p, mask) \
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{\
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int idx;\
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for (idx = 0; idx < sizeof(*(p))/sizeof(fd_mask); idx++) {\
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(p)->ifs_bits[idx] &= ~((mask)->ifs_bits[idx]);\
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}\
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}
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#define IF_MERGE(p1, p2, result) \
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{\
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int idx;\
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for (idx = 0; idx < sizeof(*(p1))/sizeof(fd_mask); idx++) {\
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(result)->ifs_bits[idx] = (p1)->ifs_bits[idx]|(p2)->ifs_bits[idx]; \
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}\
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}
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typedef struct {
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NBRTYPE hi;
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NBRTYPE lo;
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} nbrbitmap_t;
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struct vf_element {
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struct vf_element *vfe_next;
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struct sockaddr_in6 *vfe_addr;
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struct in6_addr vfe_mask;
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int vfe_flags;
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#define VFRF_EXACT 0x0001
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};
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#define VFT_ACCEPT 1
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#define VFT_DENY 2
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#define VFF_BIDIR 1
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struct vif_filter {
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int vf_type;
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int vf_flags;
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struct vf_element *vf_filter;
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};
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struct listaddr {
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struct listaddr *al_next; /* link to next addr, MUST BE FIRST */
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struct sockaddr_in6 al_addr; /* local group or neighbor address */
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u_long al_timer; /* for timing out group or neighbor */
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time_t al_ctime; /* entry creation time */
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union {
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u_int32 alu_genid; /* generation id for neighbor */
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struct sockaddr_in6 alu_reporter; /* a host which reported membership */
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} al_alu;
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u_char al_pv; /* router protocol version */
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u_char al_mv; /* router mrouted version */
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u_char al_old; /* time since heard old report */
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u_char al_index; /* neighbor index */
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u_long al_timerid; /* timer for group membership */
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u_long al_query; /* timer for repeated leave query */
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u_int16 al_flags; /* flags related to this neighbor */
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};
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#define al_genid al_alu.alu_genid
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#define al_reporter al_alu.alu_reporter
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/*
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* User level Virtual Interface structure
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*
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* A "virtual interface" is either a physical, multicast-capable interface
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* (called a "phyint"), a virtual point-to-point link (called a "tunnel")
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* or a "register vif" used by PIM. The register vif is used by the
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* Designated Router (DR) to send encapsulated data packets to the
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* Rendevous Point (RP) for a particular group. The data packets are
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* encapsulated in PIM messages (IPPROTO_PIM = 103) and then unicast to
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* the RP.
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* (Note: all addresses, subnet numbers and masks are kept in NETWORK order.)
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*/
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struct uvif {
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u_int uv_flags;
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u_char uv_metric; /* VIFF_ flags defined below */
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u_char uv_admetric; /* advertised cost of this vif */
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u_int uv_rate_limit; /* rate limit on this vif */
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struct phaddr *uv_linklocal; /* link-local address of this vif */
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struct sockaddr_in6 uv_rmt_addr;/* remote end-point addr (tunnels only) */
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struct sockaddr_in6 uv_dst_addr;/* destination for PIM messages */
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struct sockaddr_in6 uv_prefix; /* prefix (phyints only) */
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struct in6_addr uv_subnetmask; /* subnet mask (phyints only) */
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char uv_name[IFNAMSIZ]; /* interface name */
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u_int uv_ifindex; /* index of the interface */
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u_int uv_siteid; /* index of the site on the interface */
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struct listaddr *uv_groups; /* list of local groups (phyints only) */
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struct lisaddr *uv_dvmrp_neighbors;
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nbrbitmap_t uv_nbrmap; /* bitmap of active neighboring routers */
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struct listaddr *uv_querier; /* MLD querier on vif */
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int uv_prune_lifetime; /* Prune lifetime or 0 for default */
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struct vif_acl *uv_acl; /* access control list of groups */
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int uv_leaftimer; /* time until this vif is considrd leaf */
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struct phaddr *uv_addrs; /* Additional addresses on this vif */
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struct vif_filter *uvfilter; /* Route filters on this vif */
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u_int16 uv_pim_hello_timer; /* timer for sending PIM hello msgs */
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u_int16 uv_gq_timer; /* Group Query timer */
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u_int16 uv_jp_timer; /* Join/Prune timer */
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int uv_local_pref; /* default local preference for assert */
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int uv_local_metric; /* default local metric for assert */
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struct pim_nbr_entry *uv_pim_neighbors; /* list of PIM nbr routers */
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void *config_attr; /* temporary buffer while parsing config */
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/* the followings are to collect statistics */
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/* incoming PIM6 packets on this interface */
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u_quad_t uv_in_pim6_hello;
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u_quad_t uv_in_pim6_join_prune;
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u_quad_t uv_in_pim6_bootsrap;
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u_quad_t uv_in_pim6_assert;
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/* outgoing PIM6 packets on this interface */
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u_quad_t uv_out_pim6_hello;
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u_quad_t uv_out_pim6_join_prune;
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u_quad_t uv_out_pim6_bootsrap;
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u_quad_t uv_out_pim6_assert;
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/* incoming MLD packets on this interface */
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u_quad_t uv_in_mld_query;
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u_quad_t uv_in_mld_report;
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u_quad_t uv_in_mld_done;
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/* outgoing MLD packets on this interface */
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u_quad_t uv_out_mld_query;
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u_quad_t uv_out_mld_report;
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u_quad_t uv_out_mld_done;
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/* statistics about the forwarding cache in kernel */
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u_quad_t uv_cache_miss;
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u_quad_t uv_cache_notcreated;
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/* occurrences of timeouts */
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u_quad_t uv_pim6_nbr_timo;
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u_quad_t uv_listener_timo;
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u_quad_t uv_querier_timo;
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u_quad_t uv_outif_timo; /* outgoing interfaces timers */
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};
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struct phaddr {
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struct phaddr *pa_next;
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struct sockaddr_in6 pa_addr;
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struct sockaddr_in6 pa_prefix;
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struct in6_addr pa_subnetmask;
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};
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/* The Access Control List (list with scoped addresses) member */
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#define VIFF_NOLISTENER 0x800000 /* no listener on the link */
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struct vif_acl {
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struct vif_acl *acl_next;
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struct sockaddr_in6 acl_addr;
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struct in6_addr acl_mask;
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};
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/*
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* Used to get the RPF neighbor and IIF info
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* for a given source from the unicast routing table.
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*/
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struct rpfctl {
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struct sockaddr_in6 source; /* the source for which we want iif and rpfnbr */
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struct sockaddr_in6 rpfneighbor;/* next hop towards the source */
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vifi_t iif; /* the incoming interface to reach the next hop */
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};
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extern void init_vifs __P((void));
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extern void stop_all_vifs __P((void));
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extern void check_vif_state __P((void));
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struct sockaddr_in6 * max_global_address __P((void));
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struct sockaddr_in6 * uv_global __P((vifi_t));
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extern vifi_t local_address __P((struct sockaddr_in6 *src));
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struct sockaddr_in6 * local_iface __P((char *ifname));
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extern vifi_t find_vif_direct __P((struct sockaddr_in6 *src));
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extern vifi_t find_vif_direct_local __P((struct sockaddr_in6 *src));
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extern int vif_forwarder __P((if_set *p1 ,if_set *p2));
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extern if_set *vif_and __P((if_set *p1, if_set *p2, if_set *result));
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extern if_set *vif_xor __P((if_set *p1, if_set *p2, if_set *result));
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extern struct uvif *find_vif __P((char *ifname));
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#endif
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