/* * Copyright (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved. */ /* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Kernel resident routing tables. * * The routing tables are initialized when interface addresses * are set by making entries for all directly connected interfaces. */ #ifndef _NET_ROUTE_H #define _NET_ROUTE_H /* from UCB 8.5 (Berkeley) 2/8/95 */ #include <sys/tsol/label.h> #include <sys/tsol/label_macro.h> #ifdef __cplusplus extern "C" { #endif /* * A route consists of a destination address and a reference * to a routing entry. These are often held by protocols * in their control blocks, e.g. inpcb. */ struct route { struct rtentry *ro_rt; struct sockaddr ro_dst; }; /* * These numbers are used by reliable protocols for determining * retransmission behavior and are included in the routing structure. * * rmx_rtt and rmx_rttvar are stored as microseconds; */ typedef struct rt_metrics { uint32_t rmx_locks; /* Kernel must leave these values */ /* alone */ uint32_t rmx_mtu; /* MTU for this path */ uint32_t rmx_hopcount; /* max hops expected */ uint32_t rmx_expire; /* lifetime for route, e.g. redirect */ uint32_t rmx_recvpipe; /* inbound delay-bandwith product */ uint32_t rmx_sendpipe; /* outbound delay-bandwith product */ uint32_t rmx_ssthresh; /* outbound gateway buffer limit */ uint32_t rmx_rtt; /* estimated round trip time */ uint32_t rmx_rttvar; /* estimated rtt variance */ uint32_t rmx_pksent; /* packets sent using this route */ } rt_metrics_t; /* * OLD rtentry structure not used in the kernel. Instead the kernel * uses struct ire defined in <inet/ip.h>. * * We distinguish between routes to hosts and routes to networks, * preferring the former if available. For each route we infer * the interface to use from the gateway address supplied when * the route was entered. Routes that forward packets through * gateways are marked so that the output routines know to address the * gateway rather than the ultimate destination. */ struct rtentry { uint_t rt_hash; /* to speed lookups */ struct sockaddr rt_dst; /* key */ struct sockaddr rt_gateway; /* value */ short rt_flags; /* up/down?, host/net */ short rt_refcnt; /* # held references */ uint_t rt_use; /* raw # packets forwarded */ /* * The kernel does not use this field, and without it the structure is * datamodel independent. */ #if !defined(_KERNEL) struct ifnet *rt_ifp; /* the answer: interface to use */ #endif /* !defined(_KERNEL) */ }; #define RTF_UP 0x1 /* route usable */ #define RTF_GATEWAY 0x2 /* destination is a gateway */ #define RTF_HOST 0x4 /* host entry (net otherwise) */ #define RTF_REJECT 0x8 /* host or net unreachable */ #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ #define RTF_DONE 0x40 /* message confirmed */ #define RTF_MASK 0x80 /* subnet mask present */ #define RTF_CLONING 0x100 /* generate new routes on use */ #define RTF_XRESOLVE 0x200 /* external daemon resolves name */ #define RTF_LLINFO 0x400 /* generated by ARP or ESIS */ #define RTF_STATIC 0x800 /* manually added */ #define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ #define RTF_PRIVATE 0x2000 /* do not advertise this route */ #define RTF_PROTO2 0x4000 /* protocol specific routing flag */ #define RTF_PROTO1 0x8000 /* protocol specific routing flag */ #define RTF_MULTIRT 0x10000 /* multiroute */ #define RTF_SETSRC 0x20000 /* set default outgoing src address */ #define RTF_INDIRECT 0x40000 /* gateway not directly reachable */ #define RTF_KERNEL 0x80000 /* created by kernel; can't delete */ #define RTF_ZONE 0x100000 /* (NGZ only) route from global zone */ /* * OLD statistics not used by the kernel. The kernel uses <inet/mib2.h>. * * Routing statistics. */ struct rtstat { short rts_badredirect; /* bogus redirect calls */ short rts_dynamic; /* routes created by redirects */ short rts_newgateway; /* routes modified by redirects */ short rts_unreach; /* lookups which failed */ short rts_wildcard; /* lookups satisfied by a wildcard */ }; /* * Structures for routing messages. */ typedef struct rt_msghdr { ushort_t rtm_msglen; /* to skip over non-understood messages */ uchar_t rtm_version; /* future binary compatibility */ uchar_t rtm_type; /* message type */ ushort_t rtm_index; /* index for associated ifp */ int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ int rtm_addrs; /* bitmask identifying sockaddrs in msg */ pid_t rtm_pid; /* identify sender */ int rtm_seq; /* for sender to identify action */ int rtm_errno; /* why failed */ int rtm_use; /* from rtentry */ uint_t rtm_inits; /* which metrics we are initializing */ struct rt_metrics rtm_rmx; /* metrics themselves */ } rt_msghdr_t; #define RTM_VERSION 3 /* Up the ante and ignore older versions */ #define RTM_ADD 0x1 /* Add Route */ #define RTM_DELETE 0x2 /* Delete Route */ #define RTM_CHANGE 0x3 /* Change Metrics or flags */ #define RTM_GET 0x4 /* Report Metrics */ #define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */ #define RTM_REDIRECT 0x6 /* Told to use different route */ #define RTM_MISS 0x7 /* Lookup failed on this address */ #define RTM_LOCK 0x8 /* fix specified metrics */ #define RTM_OLDADD 0x9 /* caused by SIOCADDRT */ #define RTM_OLDDEL 0xa /* caused by SIOCDELRT */ #define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */ #define RTM_NEWADDR 0xc /* address being added to iface */ #define RTM_DELADDR 0xd /* address being removed from iface */ #define RTM_IFINFO 0xe /* iface going up/down etc. */ #define RTM_CHGADDR 0xf /* address added/changed (even while down) */ #define RTM_FREEADDR 0x10 /* address removed (even while down) */ #define RTV_MTU 0x1 /* init or lock _mtu */ #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ #define RTV_EXPIRE 0x4 /* init or lock _expire */ #define RTV_RPIPE 0x8 /* init or lock _recvpipe */ #define RTV_SPIPE 0x10 /* init or lock _sendpipe */ #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ #define RTV_RTT 0x40 /* init or lock _rtt */ #define RTV_RTTVAR 0x80 /* init or lock _rttvar */ /* * Bitmask values for rtm_addr. */ #define RTA_DST 0x1 /* destination sockaddr present */ #define RTA_GATEWAY 0x2 /* gateway sockaddr present */ #define RTA_NETMASK 0x4 /* netmask sockaddr present */ #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ #define RTA_IFP 0x10 /* interface name sockaddr present */ #define RTA_IFA 0x20 /* interface addr sockaddr present */ #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ #define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ #define RTA_SRC 0x100 /* source sockaddr present */ #define RTA_NUMBITS 9 /* Number of bits used in RTA_* */ /* * Index offsets for sockaddr_storage array for alternate internal encoding. * There should be an RTAX_* associated with each RTA_*. */ #define RTAX_DST 0 #define RTAX_GATEWAY 1 #define RTAX_NETMASK 2 #define RTAX_GENMASK 3 #define RTAX_IFP 4 #define RTAX_IFA 5 #define RTAX_AUTHOR 6 #define RTAX_BRD 7 #define RTAX_SRC 8 #define RTAX_MAX RTA_NUMBITS /* size of array to allocate */ /* * Routing socket message extension after sockaddrs. */ typedef struct rtm_ext_s { uint32_t rtmex_type; /* identifier for type of extension */ uint32_t rtmex_len; /* length of this extension */ } rtm_ext_t; #define RTMEX_GATEWAY_SECATTR 1 /* extension is tsol_rtsecattr */ #define RTMEX_MAX RTMEX_GATEWAY_SECATTR /* * Trusted Solaris route security attributes extension. */ typedef struct rtsa_s { uint32_t rtsa_mask; /* see RTSA_* below */ uint32_t rtsa_doi; /* domain of interpretation */ brange_t rtsa_slrange; /* sensitivity label range */ } rtsa_t; typedef struct tsol_rtsecattr_s { uint32_t rtsa_cnt; /* number of attributes */ rtsa_t rtsa_attr[1]; } tsol_rtsecattr_t; #define TSOL_RTSECATTR_SIZE(n) \ (sizeof (tsol_rtsecattr_t) + (((n) - 1) * sizeof (struct rtsa_s))) #define RTSA_MINSL 0x1 /* minimum sensitivity label is valid */ #define RTSA_MAXSL 0x2 /* maximum sensitivity label is valid */ #define RTSA_DOI 0x4 /* domain of interpretation is valid */ #define RTSA_CIPSO 0x100 /* CIPSO protocol */ #define RTSA_SLRANGE (RTSA_MINSL|RTSA_MAXSL) /* * Routing socket options. */ #define RT_AWARE 0x0001 /* set awareness of hidden interfaces */ /* * Supported RT_AWARE values. As a convenience, the bit-values here mirror * the LIFC_* values. */ #define RTAW_DEFAULT 0x0000 /* unaware application */ #define RTAW_UNDER_IPMP 0x0010 /* aware of underlying IPMP interfaces */ #ifdef __cplusplus } #endif #endif /* _NET_ROUTE_H */
