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/* $OpenBSD: in_pcb.h,v 1.17 1999/03/27 21:04:19 provos Exp $ */
/* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */
/*
* Copyright (c) 1982, 1986, 1990, 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.
*
* @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
*/
#include <sys/queue.h>
#include <netinet6/ipv6.h>
#include <netinet6/ipv6_var.h>
#include <netinet6/icmpv6.h>
#include <netinet/ip_ipsp.h>
union inpaddru {
struct in6_addr iau_addr6;
struct {
uint8_t pad[12];
struct in_addr inaddr; /* easier transition */
} iau_a4u;
};
/*
* Common structure pcb for internet protocol implementation.
* Here are stored pointers to local and foreign host table
* entries, local and foreign socket numbers, and pointers
* up (to a socket structure) and down (to a protocol-specific)
* control block.
*/
struct inpcb {
LIST_ENTRY(inpcb) inp_hash;
CIRCLEQ_ENTRY(inpcb) inp_queue;
struct inpcbtable *inp_table;
union inpaddru inp_faddru; /* Foreign address. */
union inpaddru inp_laddru; /* Local address. */
#define inp_faddr inp_faddru.iau_a4u.inaddr
#define inp_faddr6 inp_faddru.iau_addr6
#define inp_laddr inp_laddru.iau_a4u.inaddr
#define inp_laddr6 inp_laddru.iau_addr6
u_int16_t inp_fport; /* foreign port */
u_int16_t inp_lport; /* local port */
struct socket *inp_socket; /* back pointer to socket */
caddr_t inp_ppcb; /* pointer to per-protocol pcb */
union { /* Route (notice increased size). */
struct route ru_route;
struct route6 ru_route6;
} inp_ru;
#define inp_route inp_ru.ru_route
#define inp_route6 inp_ru.ru_route6
int inp_flags; /* generic IP/datagram flags */
union { /* Header prototype. */
struct ip hu_ip;
struct ipv6 hu_ipv6;
} inp_hu;
#define inp_ip inp_hu.hu_ip
#define inp_ipv6 inp_hu.hu_ipv6
struct mbuf *inp_options; /* IP options */
union {
struct ip_moptions *mou_mo; /* IPv4 multicast options */
struct ipv6_moptions *mou_mo6; /* IPv6 multicast options */
} inp_mou;
#define inp_moptions inp_mou.mou_mo
#define inp_moptions6 inp_mou.mou_mo6
u_char inp_seclevel[3]; /* Only the first 3 are used for now */
#define SL_AUTH 0 /* Authentication level */
#define SL_ESP_TRANS 1 /* ESP transport level */
#define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */
u_int8_t inp_secrequire:4, /* Condensed State from above */
inp_secresult:4; /* Result from Key Management */
#define SR_FAILED 1 /* Negotiation failed permanently */
#define SR_SUCCESS 2 /* SA successfully established */
#define SR_WAIT 3 /* Waiting for SA */
TAILQ_ENTRY(inpcb) inp_tdb_next;
struct tdb *inp_tdb; /* If tdb_dst matches our dst, use */
int inp_fflowinfo; /* Foreign flowlabel & priority */
int inp_csumoffset;
struct icmpv6_filter inp_filter;
};
struct inpcbtable {
CIRCLEQ_HEAD(, inpcb) inpt_queue;
LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl;
u_long inpt_hash;
u_int16_t inpt_lastport;
};
/* flags in inp_flags: */
#define INP_RECVOPTS 0x001 /* receive incoming IP options */
#define INP_RECVRETOPTS 0x002 /* receive IP options for reply */
#define INP_RECVDSTADDR 0x004 /* receive IP dst address */
#define INP_RXDSTOPTS INP_RECVOPTS
#define INP_RXHOPOPTS INP_RECVRETOPTS
#define INP_RXINFO INP_RECVDSTADDR
#define INP_RXSRCRT 0x010
#define INP_HOPLIMIT 0x020
#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \
INP_RXSRCRT|INP_HOPLIMIT)
#define INP_HDRINCL 0x008 /* user supplies entire IP header */
#define INP_HIGHPORT 0x010 /* user wants "high" port binding */
#define INP_LOWPORT 0x020 /* user wants "low" port binding */
/*
* These flags' values should be determined by either the transport
* protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*().
*/
#define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */
#define INP_IPV6_UNDEC 0x200 /* PCB is PF_INET6, but listens for V4/V6 */
#define INP_IPV6_MAPPED 0x400 /* PF_INET6 PCB which is connected to
* an IPv4 host, or is bound to
* an IPv4 address (specified with
* the mapped form of v6 addresses) */
#define INP_IPV6_MCAST 0x800 /* Set if inp_moptions points to ipv6 ones */
#define INPLOOKUP_WILDCARD 1
#define INPLOOKUP_SETLOCAL 2
#define INPLOOKUP_IPV6 4
#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
/* macros for handling bitmap of ports not to allocate dynamically */
#define DP_MAPBITS (sizeof(u_int32_t) * NBBY)
#define DP_MAPSIZE (howmany(IPPORT_RESERVED/2, DP_MAPBITS))
#define DP_SET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS)))
#define DP_CLR(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS)))
#define DP_ISSET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS)))
/* default values for baddynamicports [see ip_init()] */
#define DEFBADDYNAMICPORTS_TCP { 749, 750, 751, 760, 761, 871, 0 }
#define DEFBADDYNAMICPORTS_UDP { 750, 751, 0 }
struct baddynamicports {
u_int32_t tcp[DP_MAPSIZE];
u_int32_t udp[DP_MAPSIZE];
};
#ifdef _KERNEL
#define sotopf(so) (so->so_proto->pr_domain->dom_family)
void in_losing __P((struct inpcb *));
int in_pcballoc __P((struct socket *, void *));
int in_pcbbind __P((void *, struct mbuf *));
int in_pcbconnect __P((void *, struct mbuf *));
void in_pcbdetach __P((void *));
void in_pcbdisconnect __P((void *));
struct inpcb *
in_pcbhashlookup __P((struct inpcbtable *, struct in_addr,
u_int, struct in_addr, u_int));
#ifdef INET6
struct inpcb *
in6_pcbhashlookup __P((struct inpcbtable *, struct in6_addr *,
u_int, struct in6_addr *, u_int));
int in6_pcbbind __P((struct inpcb *, struct mbuf *));
int in6_pcbconnect __P((struct inpcb *, struct mbuf *));
int in6_setsockaddr __P((struct inpcb *, struct mbuf *));
int in6_setpeeraddr __P((struct inpcb *, struct mbuf *));
#endif /* INET6 */
void in_pcbinit __P((struct inpcbtable *, int));
struct inpcb *
in_pcblookup __P((struct inpcbtable *, void *, u_int, void *,
u_int, int));
void in_pcbnotify __P((struct inpcbtable *, struct sockaddr *,
u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
void in_pcbnotifyall __P((struct inpcbtable *, struct sockaddr *,
int, void (*)(struct inpcb *, int)));
void in_pcbrehash __P((struct inpcb *));
void in_rtchange __P((struct inpcb *, int));
void in_setpeeraddr __P((struct inpcb *, struct mbuf *));
void in_setsockaddr __P((struct inpcb *, struct mbuf *));
int in_baddynamic __P((u_int16_t, u_int16_t));
#endif
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