Annotation of sys/netinet/in_pcb.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: in_pcb.h,v 1.59 2007/02/22 20:23:07 millert Exp $ */
! 2: /* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the project nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: */
! 32:
! 33: /*
! 34: * Copyright (c) 1982, 1986, 1990, 1993
! 35: * The Regents of the University of California. All rights reserved.
! 36: *
! 37: * Redistribution and use in source and binary forms, with or without
! 38: * modification, are permitted provided that the following conditions
! 39: * are met:
! 40: * 1. Redistributions of source code must retain the above copyright
! 41: * notice, this list of conditions and the following disclaimer.
! 42: * 2. Redistributions in binary form must reproduce the above copyright
! 43: * notice, this list of conditions and the following disclaimer in the
! 44: * documentation and/or other materials provided with the distribution.
! 45: * 3. Neither the name of the University nor the names of its contributors
! 46: * may be used to endorse or promote products derived from this software
! 47: * without specific prior written permission.
! 48: *
! 49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 59: * SUCH DAMAGE.
! 60: *
! 61: * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
! 62: */
! 63:
! 64: #ifndef _NETINET_IN_PCB_H_
! 65: #define _NETINET_IN_PCB_H_
! 66:
! 67: #include <sys/queue.h>
! 68: #include <netinet/ip6.h>
! 69: #include <netinet6/ip6_var.h>
! 70: #include <netinet/icmp6.h>
! 71: #include <netinet/ip_ipsp.h>
! 72:
! 73: union inpaddru {
! 74: struct in6_addr iau_addr6;
! 75: struct {
! 76: uint8_t pad[12];
! 77: struct in_addr inaddr; /* easier transition */
! 78: } iau_a4u;
! 79: };
! 80:
! 81: /*
! 82: * Common structure pcb for internet protocol implementation.
! 83: * Here are stored pointers to local and foreign host table
! 84: * entries, local and foreign socket numbers, and pointers
! 85: * up (to a socket structure) and down (to a protocol-specific)
! 86: * control block.
! 87: */
! 88: struct inpcb {
! 89: LIST_ENTRY(inpcb) inp_hash;
! 90: LIST_ENTRY(inpcb) inp_lhash; /* extra hash for lport */
! 91: CIRCLEQ_ENTRY(inpcb) inp_queue;
! 92: struct inpcbtable *inp_table;
! 93: union inpaddru inp_faddru; /* Foreign address. */
! 94: union inpaddru inp_laddru; /* Local address. */
! 95: #define inp_faddr inp_faddru.iau_a4u.inaddr
! 96: #define inp_faddr6 inp_faddru.iau_addr6
! 97: #define inp_laddr inp_laddru.iau_a4u.inaddr
! 98: #define inp_laddr6 inp_laddru.iau_addr6
! 99: u_int16_t inp_fport; /* foreign port */
! 100: u_int16_t inp_lport; /* local port */
! 101: struct socket *inp_socket; /* back pointer to socket */
! 102: caddr_t inp_ppcb; /* pointer to per-protocol pcb */
! 103: union { /* Route (notice increased size). */
! 104: struct route ru_route;
! 105: struct route_in6 ru_route6;
! 106: } inp_ru;
! 107: #define inp_route inp_ru.ru_route
! 108: #define inp_route6 inp_ru.ru_route6
! 109: int inp_flags; /* generic IP/datagram flags */
! 110: union { /* Header prototype. */
! 111: struct ip hu_ip;
! 112: struct ip6_hdr hu_ipv6;
! 113: } inp_hu;
! 114: #define inp_ip inp_hu.hu_ip
! 115: #define inp_ipv6 inp_hu.hu_ipv6
! 116: struct mbuf *inp_options; /* IP options */
! 117: struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */
! 118: int inp_hops;
! 119: union {
! 120: struct ip_moptions *mou_mo; /* IPv4 multicast options */
! 121: struct ip6_moptions *mou_mo6; /* IPv6 multicast options */
! 122: } inp_mou;
! 123: #define inp_moptions inp_mou.mou_mo
! 124: #define inp_moptions6 inp_mou.mou_mo6
! 125: u_char inp_seclevel[4];
! 126: #define SL_AUTH 0 /* Authentication level */
! 127: #define SL_ESP_TRANS 1 /* ESP transport level */
! 128: #define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */
! 129: #define SL_IPCOMP 3 /* Compression level */
! 130: u_int inp_secrequire:4, /* Condensed State from above */
! 131: inp_secresult:4; /* Result from Key Management */
! 132: #define SR_FAILED 1 /* Negotiation failed permanently */
! 133: #define SR_SUCCESS 2 /* SA successfully established */
! 134: #define SR_WAIT 3 /* Waiting for SA */
! 135: u_char inp_ip_minttl; /* minimum TTL or drop */
! 136: TAILQ_ENTRY(inpcb) inp_tdb_in_next, inp_tdb_out_next;
! 137: struct tdb *inp_tdb_in, *inp_tdb_out;
! 138: struct ipsec_policy *inp_ipo;
! 139: struct ipsec_ref *inp_ipsec_remotecred;
! 140: struct ipsec_ref *inp_ipsec_remoteauth;
! 141: #define inp_flowinfo inp_hu.hu_ipv6.ip6_flow
! 142:
! 143: int in6p_cksum;
! 144: #ifndef _KERNEL
! 145: #define inp_csumoffset in6p_cksum
! 146: #endif
! 147: struct icmp6_filter *inp_icmp6filt;
! 148: };
! 149:
! 150: struct inpcbtable {
! 151: CIRCLEQ_HEAD(, inpcb) inpt_queue;
! 152: LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl, *inpt_lhashtbl;
! 153: u_long inpt_hash, inpt_lhash;
! 154: u_int16_t inpt_lastport;
! 155: };
! 156:
! 157: /* flags in inp_flags: */
! 158: #define INP_RECVOPTS 0x001 /* receive incoming IP options */
! 159: #define INP_RECVRETOPTS 0x002 /* receive IP options for reply */
! 160: #define INP_RECVDSTADDR 0x004 /* receive IP dst address */
! 161:
! 162: #define INP_RXDSTOPTS INP_RECVOPTS
! 163: #define INP_RXHOPOPTS INP_RECVRETOPTS
! 164: #define INP_RXINFO INP_RECVDSTADDR
! 165: #define INP_RXSRCRT 0x010
! 166: #define INP_HOPLIMIT 0x020
! 167:
! 168: #define INP_HDRINCL 0x008 /* user supplies entire IP header */
! 169: #define INP_HIGHPORT 0x010 /* user wants "high" port binding */
! 170: #define INP_LOWPORT 0x020 /* user wants "low" port binding */
! 171: #define INP_RECVIF 0x080 /* receive incoming interface */
! 172: #define INP_RECVTTL 0x040 /* receive incoming IP TTL */
! 173:
! 174: #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \
! 175: INP_RXSRCRT|INP_HOPLIMIT|INP_RECVIF|INP_RECVTTL)
! 176:
! 177: /*
! 178: * These flags' values should be determined by either the transport
! 179: * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*().
! 180: */
! 181: #define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */
! 182:
! 183: #if 1 /*KAME*/
! 184: /*
! 185: * Flags in in6p_flags
! 186: * We define KAME's original flags in higher 16 bits as much as possible
! 187: * for compatibility with *bsd*s.
! 188: * XXX: Should IN6P_HIGHPORT and IN6P_LOWPORT be moved as well?
! 189: */
! 190: #define IN6P_HIGHPORT INP_HIGHPORT /* user wants "high" port */
! 191: #define IN6P_LOWPORT INP_LOWPORT /* user wants "low" port */
! 192: #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
! 193: #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
! 194: #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
! 195: #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
! 196: #define IN6P_RTHDR 0x100000 /* receive routing header */
! 197: #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
! 198: #define IN6P_TCLASS 0x400000 /* receive traffic class value */
! 199: #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
! 200:
! 201: #define IN6P_ANONPORT 0x4000000 /* port chosen for user */
! 202: #define IN6P_FAITH 0x8000000 /* accept FAITH'ed connections */
! 203: #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
! 204: #define IN6P_MTU 0x80000000 /* receive path MTU */
! 205:
! 206: #define IN6P_MINMTU 0x20000000 /* use minimum MTU */
! 207:
! 208: #define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
! 209: IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
! 210: IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
! 211: IN6P_MTU)
! 212: #endif
! 213:
! 214: #define INPLOOKUP_WILDCARD 1
! 215: #define INPLOOKUP_SETLOCAL 2
! 216: #define INPLOOKUP_IPV6 4
! 217:
! 218: #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
! 219:
! 220: /* macros for handling bitmap of ports not to allocate dynamically */
! 221: #define DP_MAPBITS (sizeof(u_int32_t) * NBBY)
! 222: #define DP_MAPSIZE (howmany(IPPORT_RESERVED/2, DP_MAPBITS))
! 223: #define DP_SET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS)))
! 224: #define DP_CLR(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS)))
! 225: #define DP_ISSET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS)))
! 226:
! 227: /* default values for baddynamicports [see ip_init()] */
! 228: #define DEFBADDYNAMICPORTS_TCP { 587, 749, 750, 751, 871, 0 }
! 229: #define DEFBADDYNAMICPORTS_UDP { 623, 664, 749, 750, 751, 0 }
! 230:
! 231: struct baddynamicports {
! 232: u_int32_t tcp[DP_MAPSIZE];
! 233: u_int32_t udp[DP_MAPSIZE];
! 234: };
! 235:
! 236: #ifdef _KERNEL
! 237:
! 238: #define sotopf(so) (so->so_proto->pr_domain->dom_family)
! 239:
! 240: void in_losing(struct inpcb *);
! 241: int in_pcballoc(struct socket *, void *);
! 242: int in_pcbbind(void *, struct mbuf *);
! 243: int in_pcbconnect(void *, struct mbuf *);
! 244: void in_pcbdetach(void *);
! 245: void in_pcbdisconnect(void *);
! 246: struct inpcb *
! 247: in_pcbhashlookup(struct inpcbtable *, struct in_addr,
! 248: u_int, struct in_addr, u_int);
! 249: struct inpcb *
! 250: in_pcblookup_listen(struct inpcbtable *, struct in_addr, u_int, int);
! 251: #ifdef INET6
! 252: struct inpcb *
! 253: in6_pcbhashlookup(struct inpcbtable *, struct in6_addr *,
! 254: u_int, struct in6_addr *, u_int);
! 255: struct inpcb *
! 256: in6_pcblookup_listen(struct inpcbtable *,
! 257: struct in6_addr *, u_int, int);
! 258: int in6_pcbbind(struct inpcb *, struct mbuf *);
! 259: int in6_pcbconnect(struct inpcb *, struct mbuf *);
! 260: int in6_setsockaddr(struct inpcb *, struct mbuf *);
! 261: int in6_setpeeraddr(struct inpcb *, struct mbuf *);
! 262: #endif /* INET6 */
! 263: void in_pcbinit(struct inpcbtable *, int);
! 264: struct inpcb *
! 265: in_pcblookup(struct inpcbtable *, void *, u_int, void *,
! 266: u_int, int);
! 267: void in_pcbnotifyall(struct inpcbtable *, struct sockaddr *,
! 268: int, void (*)(struct inpcb *, int));
! 269: void in_pcbrehash(struct inpcb *);
! 270: void in_rtchange(struct inpcb *, int);
! 271: void in_setpeeraddr(struct inpcb *, struct mbuf *);
! 272: void in_setsockaddr(struct inpcb *, struct mbuf *);
! 273: int in_baddynamic(u_int16_t, u_int16_t);
! 274: extern struct sockaddr_in *in_selectsrc(struct sockaddr_in *,
! 275: struct route *, int, struct ip_moptions *, int *);
! 276: struct rtentry *
! 277: in_pcbrtentry(struct inpcb *);
! 278:
! 279: /* INET6 stuff */
! 280: int in6_pcbnotify(struct inpcbtable *, struct sockaddr *,
! 281: u_int, struct sockaddr *, u_int, int, void *,
! 282: void (*)(struct inpcb *, int));
! 283: int in6_selecthlim(struct inpcb *, struct ifnet *);
! 284: int in6_pcbsetport(struct in6_addr *, struct inpcb *, struct proc *);
! 285: #endif /* _KERNEL */
! 286: #endif /* _NETINET_IN_PCB_H_ */
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