f91ee608a9
it is not supposed to work. logging fix: add "\n" to some of log() in in6_prefix.c. improve in6_ifdetach(). now almost all structure depend on ifnet will be cleared up. possible loose ends: - cached route_in6 in static varaiables needs to be cleared as well - there are ifaddr manipulation without reference counting, which should be fixed we still see panics after card removal, though... not sure what is left. (sync with kame)
317 lines
10 KiB
C
317 lines
10 KiB
C
/* $NetBSD: nd6.h,v 1.8 2000/02/04 14:34:28 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may 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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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETINET6_ND6_H_
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#define _NETINET6_ND6_H_
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#include <sys/queue.h>
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struct llinfo_nd6 {
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struct llinfo_nd6 *ln_next;
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struct llinfo_nd6 *ln_prev;
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struct rtentry *ln_rt;
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struct mbuf *ln_hold; /* last packet until resolved/timeout */
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long ln_asked; /* number of queries already sent for this addr */
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u_long ln_expire; /* lifetime for NDP state transition */
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short ln_state; /* reachability state */
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short ln_router; /* 2^0: ND6 router bit */
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};
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#define ND6_LLINFO_NOSTATE -2
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#define ND6_LLINFO_WAITDELETE -1
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#define ND6_LLINFO_INCOMPLETE 0
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#define ND6_LLINFO_REACHABLE 1
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#define ND6_LLINFO_STALE 2
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#define ND6_LLINFO_DELAY 3
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#define ND6_LLINFO_PROBE 4
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#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)
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struct nd_ifinfo {
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u_int32_t linkmtu; /* LinkMTU */
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u_int32_t maxmtu; /* Upper bound of LinkMTU */
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u_int32_t basereachable; /* BaseReachableTime */
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u_int32_t reachable; /* Reachable Time */
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u_int32_t retrans; /* Retrans Timer */
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int recalctm; /* BaseReacable re-calculation timer */
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u_int8_t chlim; /* CurHopLimit */
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u_int8_t receivedra;
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};
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struct in6_nbrinfo {
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char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */
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struct in6_addr addr; /* IPv6 address of the neighbor */
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long asked; /* number of queries already sent for this addr */
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int isrouter; /* if it acts as a router */
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int state; /* reachability state */
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int expire; /* lifetime for NDP state transition */
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};
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#define DRLSTSIZ 10
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#define PRLSTSIZ 10
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struct in6_drlist {
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char ifname[IFNAMSIZ];
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struct {
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struct in6_addr rtaddr;
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u_char flags;
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u_short rtlifetime;
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u_long expire;
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u_short if_index;
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} defrouter[DRLSTSIZ];
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};
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struct in6_prlist {
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char ifname[IFNAMSIZ];
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struct {
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struct in6_addr prefix;
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struct prf_ra raflags;
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u_char prefixlen;
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u_long vltime;
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u_long pltime;
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u_long expire;
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u_short if_index;
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u_short advrtrs; /* number of advertisement routers */
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struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
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} prefix[PRLSTSIZ];
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};
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struct in6_ndireq {
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char ifname[IFNAMSIZ];
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struct nd_ifinfo ndi;
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};
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struct in6_ndifreq {
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char ifname[IFNAMSIZ];
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u_long ifindex;
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};
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/* protocol constants */
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#define MAX_RTR_SOLICITATION_DELAY 1 /*1sec*/
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#define RTR_SOLICITATION_INTERVAL 4 /*4sec*/
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#define MAX_RTR_SOLICITATIONS 3
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#define ND6_INFINITE_LIFETIME 0xffffffff
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#ifdef _KERNEL
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/* node constants */
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#define MAX_REACHABLE_TIME 3600000 /* msec */
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#define REACHABLE_TIME 30000 /* msec */
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#define RETRANS_TIMER 1000 /* msec */
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#define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */
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#define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */
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#define ND_COMPUTE_RTIME(x) \
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(((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
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((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
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TAILQ_HEAD(nd_drhead, nd_defrouter);
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struct nd_defrouter {
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TAILQ_ENTRY(nd_defrouter) dr_entry;
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struct in6_addr rtaddr;
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u_char flags;
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u_short rtlifetime;
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u_long expire;
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struct ifnet *ifp;
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};
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struct nd_prefix {
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struct ifnet *ndpr_ifp;
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LIST_ENTRY(nd_prefix) ndpr_entry;
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struct sockaddr_in6 ndpr_prefix; /* prefix */
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struct in6_addr ndpr_mask; /* netmask derived from the prefix */
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struct in6_addr ndpr_addr; /* address that is derived from the prefix */
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u_int32_t ndpr_vltime; /* advertised valid lifetime */
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u_int32_t ndpr_pltime; /* advertised preferred lifetime */
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time_t ndpr_expire; /* expiration time of the prefix */
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time_t ndpr_preferred; /* preferred time of the prefix */
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struct prf_ra ndpr_flags;
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/* list of routers that advertise the prefix: */
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LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
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u_char ndpr_plen;
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struct ndpr_stateflags {
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/* if this prefix can be regarded as on-link */
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u_char onlink : 1;
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} ndpr_stateflags;
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};
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#define ndpr_next ndpr_entry.le_next
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#define ndpr_raf ndpr_flags
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#define ndpr_raf_onlink ndpr_flags.onlink
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#define ndpr_raf_auto ndpr_flags.autonomous
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#define ndpr_statef_onlink ndpr_stateflags.onlink
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#define ndpr_statef_addmark ndpr_stateflags.addmark
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/*
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* We keep expired prefix for certain amount of time, for validation purposes.
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* 1800s = MaxRtrAdvInterval
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*/
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#define NDPR_KEEP_EXPIRED (1800 * 2)
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/*
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* Message format for use in obtaining information about prefixes
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* from inet6 sysctl function
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*/
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struct inet6_ndpr_msghdr {
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u_short inpm_msglen; /* to skip over non-understood messages */
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u_char inpm_version; /* future binary compatability */
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u_char inpm_type; /* message type */
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struct in6_addr inpm_prefix;
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u_long prm_vltim;
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u_long prm_pltime;
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u_long prm_expire;
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u_long prm_preferred;
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struct in6_prflags prm_flags;
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u_short prm_index; /* index for associated ifp */
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u_char prm_plen; /* length of prefix in bits */
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};
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#define prm_raf_onlink prm_flags.prf_ra.onlink
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#define prm_raf_auto prm_flags.prf_ra.autonomous
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#define prm_statef_onlink prm_flags.prf_state.onlink
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#define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid
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#define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd
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#define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr))
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#define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr))
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struct nd_pfxrouter {
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LIST_ENTRY(nd_pfxrouter) pfr_entry;
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#define pfr_next pfr_entry.le_next
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struct nd_defrouter *router;
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};
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LIST_HEAD(nd_prhead, nd_prefix);
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/* nd6.c */
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extern int nd6_prune;
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extern int nd6_delay;
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extern int nd6_umaxtries;
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extern int nd6_mmaxtries;
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extern int nd6_useloopback;
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extern int nd6_proxyall;
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extern struct llinfo_nd6 llinfo_nd6;
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extern struct nd_ifinfo *nd_ifinfo;
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extern struct nd_drhead nd_defrouter;
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extern struct nd_prhead nd_prefix;
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/* nd6_rtr.c */
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extern int nd6_defifindex;
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union nd_opts {
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struct nd_opt_hdr *nd_opt_array[9];
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struct {
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struct nd_opt_hdr *zero;
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struct nd_opt_hdr *src_lladdr;
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struct nd_opt_hdr *tgt_lladdr;
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struct nd_opt_prefix_info *pi_beg;/* multiple opts, start */
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struct nd_opt_rd_hdr *rh;
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struct nd_opt_mtu *mtu;
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struct nd_opt_hdr *search; /* multiple opts */
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struct nd_opt_hdr *last; /* multiple opts */
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int done;
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struct nd_opt_prefix_info *pi_end;/* multiple opts, end */
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} nd_opt_each;
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};
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#define nd_opts_src_lladdr nd_opt_each.src_lladdr
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#define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr
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#define nd_opts_pi nd_opt_each.pi_beg
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#define nd_opts_pi_end nd_opt_each.pi_end
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#define nd_opts_rh nd_opt_each.rh
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#define nd_opts_mtu nd_opt_each.mtu
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#define nd_opts_search nd_opt_each.search
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#define nd_opts_last nd_opt_each.last
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#define nd_opts_done nd_opt_each.done
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/* XXX: need nd6_var.h?? */
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/* nd6.c */
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void nd6_init __P((void));
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void nd6_ifattach __P((struct ifnet *));
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int nd6_is_addr_neighbor __P((struct in6_addr *, struct ifnet *));
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void nd6_option_init __P((void *, int, union nd_opts *));
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struct nd_opt_hdr *nd6_option __P((union nd_opts *));
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int nd6_options __P((union nd_opts *));
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struct rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
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void nd6_setmtu __P((struct ifnet *));
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void nd6_timer __P((void *));
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void nd6_purge __P((struct ifnet *));
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void nd6_free __P((struct rtentry *));
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void nd6_nud_hint __P((struct rtentry *, struct in6_addr *));
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int nd6_resolve __P((struct ifnet *, struct rtentry *,
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struct mbuf *, struct sockaddr *, u_char *));
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void nd6_rtrequest __P((int, struct rtentry *, struct sockaddr *));
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void nd6_p2p_rtrequest __P((int, struct rtentry *, struct sockaddr *));
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int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
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struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
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char *, int, int, int));
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/* for test */
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int nd6_output __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *,
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struct rtentry *));
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int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
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struct sockaddr *, u_char *));
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/* nd6_nbr.c */
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void nd6_na_input __P((struct mbuf *, int, int));
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void nd6_na_output __P((struct ifnet *, struct in6_addr *,
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struct in6_addr *, u_long, int));
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void nd6_ns_input __P((struct mbuf *, int, int));
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void nd6_ns_output __P((struct ifnet *, struct in6_addr *,
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struct in6_addr *, struct llinfo_nd6 *, int));
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caddr_t nd6_ifptomac __P((struct ifnet *));
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void nd6_dad_start __P((struct ifaddr *, int *));
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void nd6_dad_duplicated __P((struct ifaddr *));
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/* nd6_rtr.c */
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void nd6_rs_input __P((struct mbuf *, int, int));
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void nd6_ra_input __P((struct mbuf *, int, int));
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void prelist_del __P((struct nd_prefix *));
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void defrouter_addreq __P((struct nd_defrouter *));
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void defrouter_delreq __P((struct nd_defrouter *, int));
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void defrouter_select __P((void));
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void defrtrlist_del __P((struct nd_defrouter *));
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void prelist_remove __P((struct nd_prefix *));
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int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
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struct mbuf *));
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void pfxlist_onlink_check __P((void));
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struct nd_defrouter *defrouter_lookup __P((struct in6_addr *,
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struct ifnet *));
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int in6_ifdel __P((struct ifnet *, struct in6_addr *));
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int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
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void rt6_flush __P((struct in6_addr *, struct ifnet *));
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int nd6_setdefaultiface __P((int));
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#endif /* _KERNEL */
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#endif /* _NETINET6_ND6_H_ */
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