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218 lines
8.4 KiB
218 lines
8.4 KiB
/* $OpenBSD: in_pcb.h,v 1.17 1999/03/27 21:04:19 provos Exp $ */
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/* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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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* @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/queue.h>
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#ifdef IP6
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#include <netinet6/ipv6.h>
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#include <netinet6/ipv6_var.h>
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#include <netinet6/icmpv6.h>
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#endif
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#include <netinet/ip_ipsp.h>
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union inpaddru {
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struct in6_addr iau_addr6;
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struct {
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uint8_t pad[12];
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struct in_addr inaddr; /* easier transition */
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} iau_a4u;
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};
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/*
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* Common structure pcb for internet protocol implementation.
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* Here are stored pointers to local and foreign host table
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* entries, local and foreign socket numbers, and pointers
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* up (to a socket structure) and down (to a protocol-specific)
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* control block.
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*/
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struct inpcb {
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LIST_ENTRY(inpcb) inp_hash;
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CIRCLEQ_ENTRY(inpcb) inp_queue;
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struct inpcbtable *inp_table;
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union inpaddru inp_faddru; /* Foreign address. */
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union inpaddru inp_laddru; /* Local address. */
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#define inp_faddr inp_faddru.iau_a4u.inaddr
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#define inp_faddr6 inp_faddru.iau_addr6
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#define inp_laddr inp_laddru.iau_a4u.inaddr
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#define inp_laddr6 inp_laddru.iau_addr6
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u_int16_t inp_fport; /* foreign port */
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u_int16_t inp_lport; /* local port */
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struct socket *inp_socket; /* back pointer to socket */
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caddr_t inp_ppcb; /* pointer to per-protocol pcb */
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union { /* Route (notice increased size). */
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struct route ru_route;
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#ifdef IP6
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struct route6 ru_route6;
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#endif
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} inp_ru;
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#define inp_route inp_ru.ru_route
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#define inp_route6 inp_ru.ru_route6
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int inp_flags; /* generic IP/datagram flags */
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union { /* Header prototype. */
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struct ip hu_ip;
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#ifdef IP6
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struct ipv6 hu_ipv6;
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#endif
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struct {
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char ofname[16];
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char ifname[16];
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} name;
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} inp_hu;
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#define inp_ip inp_hu.hu_ip
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#define inp_ipv6 inp_hu.hu_ipv6
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#define inp_ifname inp_hu.name.ifname
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#define inp_ofname inp_hu.name.ofname
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struct mbuf *inp_options; /* IP options */
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union {
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struct ip_moptions *mou_mo; /* IPv4 multicast options */
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struct ipv6_moptions *mou_mo6; /* IPv6 multicast options */
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} inp_mou;
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#define inp_moptions inp_mou.mou_mo
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#define inp_moptions6 inp_mou.mou_mo6
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u_char inp_seclevel[3]; /* Only the first 3 are used for now */
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#define SL_AUTH 0 /* Authentication level */
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#define SL_ESP_TRANS 1 /* ESP transport level */
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#define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */
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u_int8_t inp_secrequire:4, /* Condensed State from above */
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inp_secresult:4; /* Result from Key Management */
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#define SR_FAILED 1 /* Negotiation failed permanently */
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#define SR_SUCCESS 2 /* SA successfully established */
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#define SR_WAIT 3 /* Waiting for SA */
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TAILQ_ENTRY(inpcb) inp_tdb_next;
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struct tdb *inp_tdb; /* If tdb_dst matches our dst, use */
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int inp_fflowinfo; /* Foreign flowlabel & priority */
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int inp_csumoffset;
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#if IP6
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struct icmpv6_filter inp_filter;
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#endif
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};
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struct inpcbtable {
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CIRCLEQ_HEAD(, inpcb) inpt_queue;
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LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl;
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u_long inpt_hash;
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u_int16_t inpt_lastport;
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};
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/* flags in inp_flags: */
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#define INP_RECVOPTS 0x001 /* receive incoming IP options */
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#define INP_RECVRETOPTS 0x002 /* receive IP options for reply */
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#define INP_RECVDSTADDR 0x004 /* receive IP dst address */
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#define INP_RXDSTOPTS INP_RECVOPTS
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#define INP_RXHOPOPTS INP_RECVRETOPTS
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#define INP_RXINFO INP_RECVDSTADDR
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#define INP_RXSRCRT 0x010
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#define INP_HOPLIMIT 0x020
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#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \
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INP_RXSRCRT|INP_HOPLIMIT)
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#define INP_HDRINCL 0x008 /* user supplies entire IP header */
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#define INP_HIGHPORT 0x010 /* user wants "high" port binding */
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#define INP_LOWPORT 0x020 /* user wants "low" port binding */
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/*
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* These flags' values should be determined by either the transport
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* protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*().
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*/
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#define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */
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#define INP_IPV6_UNDEC 0x200 /* PCB is PF_INET6, but listens for V4/V6 */
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#define INP_IPV6_MAPPED 0x400 /* PF_INET6 PCB which is connected to
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* an IPv4 host, or is bound to
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* an IPv4 address (specified with
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* the mapped form of v6 addresses) */
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#define INP_IPV6_MCAST 0x800 /* Set if inp_moptions points to ipv6 ones */
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#define INPLOOKUP_WILDCARD 1
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#define INPLOOKUP_SETLOCAL 2
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#define INPLOOKUP_IPV6 4
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#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
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/* macros for handling bitmap of ports not to allocate dynamically */
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#define DP_MAPBITS (sizeof(u_int32_t) * NBBY)
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#define DP_MAPSIZE (howmany(IPPORT_RESERVED/2, DP_MAPBITS))
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#define DP_SET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS)))
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#define DP_CLR(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS)))
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#define DP_ISSET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS)))
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/* default values for baddynamicports [see ip_init()] */
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#define DEFBADDYNAMICPORTS_TCP { 749, 750, 751, 760, 761, 871, 0 }
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#define DEFBADDYNAMICPORTS_UDP { 750, 751, 0 }
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struct baddynamicports {
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u_int32_t tcp[DP_MAPSIZE];
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u_int32_t udp[DP_MAPSIZE];
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};
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#ifdef _KERNEL
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#define sotopf(so) (so->so_proto->pr_domain->dom_family)
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void in_losing __P((struct inpcb *));
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int in_pcballoc __P((struct socket *, void *));
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int in_pcbbind __P((void *, struct mbuf *));
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int in_pcbconnect __P((void *, struct mbuf *));
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void in_pcbdetach __P((void *));
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void in_pcbdisconnect __P((void *));
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struct inpcb *
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in_pcbhashlookup __P((struct inpcbtable *, struct in_addr,
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u_int, struct in_addr, u_int));
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#ifdef INET6
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struct inpcb *
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in6_pcbhashlookup __P((struct inpcbtable *, struct in6_addr *,
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u_int, struct in6_addr *, u_int));
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int in6_pcbbind __P((struct inpcb *, struct mbuf *));
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int in6_pcbconnect __P((struct inpcb *, struct mbuf *));
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int in6_setsockaddr __P((struct inpcb *, struct mbuf *));
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int in6_setpeeraddr __P((struct inpcb *, struct mbuf *));
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#endif /* INET6 */
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void in_pcbinit __P((struct inpcbtable *, int));
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struct inpcb *
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in_pcblookup __P((struct inpcbtable *, void *, u_int, void *,
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u_int, int));
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void in_pcbnotify __P((struct inpcbtable *, struct sockaddr *,
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u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
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void in_pcbnotifyall __P((struct inpcbtable *, struct sockaddr *,
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int, void (*)(struct inpcb *, int)));
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void in_pcbrehash __P((struct inpcb *));
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void in_rtchange __P((struct inpcb *, int));
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void in_setpeeraddr __P((struct inpcb *, struct mbuf *));
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void in_setsockaddr __P((struct inpcb *, struct mbuf *));
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int in_baddynamic __P((u_int16_t, u_int16_t));
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#endif
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