bsd/netinet/in_pcb.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1982, 1986, 1990, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)in_pcb.h    8.1 (Berkeley) 6/10/93
  61  * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.32.2.4 2001/08/13 16:26:17 ume Exp $
  62  */
  63
  64 #ifndef _NETINET_IN_PCB_H_
  65 #define _NETINET_IN_PCB_H_
  66 #include <sys/appleapiopts.h>
  67
  68 #include <sys/types.h>
  69 #include <sys/queue.h>
  70 #ifdef KERNEL_PRIVATE
  71 #ifdef KERNEL
  72 #include <kern/locks.h>
  73 #endif
  74 #endif /* KERNEL_PRIVATE */
  75
  76 #include <netinet6/ipsec.h> /* for IPSEC */
  77
  78 #ifdef KERNEL_PRIVATE
  79
  80 #define in6pcb          inpcb   /* for KAME src sync over BSD*'s */
  81 #define in6p_sp         inp_sp  /* for KAME src sync over BSD*'s */
  82
  83 /*
  84  * Common structure pcb for internet protocol implementation.
  85  * Here are stored pointers to local and foreign host table
  86  * entries, local and foreign socket numbers, and pointers
  87  * up (to a socket structure) and down (to a protocol-specific)
  88  * control block.
  89  */
  90 LIST_HEAD(inpcbhead, inpcb);
  91 LIST_HEAD(inpcbporthead, inpcbport);
  92 #endif /* KERNEL_PRIVATE */
  93 typedef u_quad_t        inp_gen_t;
  94
  95 /*
  96  * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
  97  * So, AF_INET6 null laddr is also used as AF_INET null laddr,
  98  * by utilize following structure. (At last, same as INRIA)
  99  */
 100 struct in_addr_4in6 {
 101         u_int32_t       ia46_pad32[3];
 102         struct  in_addr ia46_addr4;
 103 };
 104
 105 #ifdef KERNEL_PRIVATE
 106 /*
 107  * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
 108  * of the structure.  Therefore, it is important that the members in
 109  * that position not contain any information which is required to be
 110  * stable.
 111  */
 112 struct  icmp6_filter;
 113
 114 struct inpcb {
 115         LIST_ENTRY(inpcb) inp_hash;     /* hash list */
 116         int             inp_wantcnt;            /* pcb wanted count. protected by pcb list lock */
 117         int             inp_state;              /* state of this pcb, in use, recycled, ready for recycling... */
 118         u_short inp_fport;              /* foreign port */
 119         u_short inp_lport;              /* local port */
 120         LIST_ENTRY(inpcb) inp_list;     /* list for all PCBs of this proto */
 121         caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
 122         struct  inpcbinfo *inp_pcbinfo; /* PCB list info */
 123         struct  socket *inp_socket;     /* back pointer to socket */
 124         u_char  nat_owner;              /* Used to NAT TCP/UDP traffic */
 125         u_long  nat_cookie;             /* Cookie stored and returned to NAT */
 126         LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
 127         struct  inpcbport *inp_phd;     /* head of this list */
 128         inp_gen_t inp_gencnt;           /* generation count of this instance */
 129         int     inp_flags;              /* generic IP/datagram flags */
 130         u_int32_t inp_flow;
 131
 132         u_char  inp_vflag;      /* INP_IPV4 or INP_IPV6 */
 133
 134         u_char inp_ip_ttl;              /* time to live proto */
 135         u_char inp_ip_p;                /* protocol proto */
 136         /* protocol dependent part */
 137         union {
 138                 /* foreign host table entry */
 139                 struct  in_addr_4in6 inp46_foreign;
 140                 struct  in6_addr inp6_foreign;
 141         } inp_dependfaddr;
 142         union {
 143                 /* local host table entry */
 144                 struct  in_addr_4in6 inp46_local;
 145                 struct  in6_addr inp6_local;
 146         } inp_dependladdr;
 147         union {
 148                 /* placeholder for routing entry */
 149                 struct  route inp4_route;
 150                 struct  route_in6 inp6_route;
 151         } inp_dependroute;
 152         struct {
 153                 /* type of service proto */
 154                 u_char inp4_ip_tos;
 155                 /* IP options */
 156                 struct mbuf *inp4_options;
 157                 /* IP multicast options */
 158                 struct ip_moptions *inp4_moptions;
 159         } inp_depend4;
 160         struct {
 161                 /* IP options */
 162                 struct mbuf *inp6_options;
 163                 u_int8_t        inp6_hlim;
 164                 u_int8_t        unused_uint8_1;
 165                 ushort  unused_uint16_1;
 166                 /* IP6 options for outgoing packets */
 167                 struct  ip6_pktopts *inp6_outputopts;
 168                 /* IP multicast options */
 169                 struct  ip6_moptions *inp6_moptions;
 170                 /* ICMPv6 code type filter */
 171                 struct  icmp6_filter *inp6_icmp6filt;
 172                 /* IPV6_CHECKSUM setsockopt */
 173                 int     inp6_cksum;
 174                 u_short inp6_ifindex;
 175                 short   inp6_hops;
 176         } inp_depend6;
 177
 178         int     hash_element;           /* Array index of pcb's hash list    */
 179         caddr_t inp_saved_ppcb;         /* place to save pointer while cached */
 180         struct inpcbpolicy *inp_sp;
 181 #ifdef _KERN_LOCKS_H_
 182         lck_mtx_t *inpcb_mtx;   /* inpcb per-socket mutex */
 183 #else
 184         void      *inpcb_mtx;
 185 #endif
 186         u_long  reserved[2];            /* For future use */
 187 };
 188
 189 #endif /* KERNEL_PRIVATE */
 190
 191 /*
 192  * The range of the generation count, as used in this implementation,
 193  * is 9e19.  We would have to create 300 billion connections per
 194  * second for this number to roll over in a year.  This seems sufficiently
 195  * unlikely that we simply don't concern ourselves with that possibility.
 196  */
 197
 198 /*
 199  * Interface exported to userland by various protocols which use
 200  * inpcbs.  Hack alert -- only define if struct xsocket is in scope.
 201  */
 202
 203 /*
 204  * This is a copy of the inpcb as it shipped in Panther. This structure
 205  * is filled out in a copy function. This allows the inpcb to change
 206  * without breaking userland tools.
 207  *
 208  * CAUTION: Many fields may not be filled out. Fewer may be filled out
 209  * in the future. Code defensively.
 210  */
 211 #ifdef KERNEL_PRIVATE
 212 struct inpcb_compat {
 213 #else
 214 struct inpcbinfo;
 215 struct inpcbport;
 216 struct mbuf;
 217 struct  ip6_pktopts;
 218 struct  ip6_moptions;
 219 struct  icmp6_filter;
 220 struct inpcbpolicy;
 221
 222 struct inpcb {
 223 #endif /* KERNEL_PRIVATE */
 224         LIST_ENTRY(inpcb) inp_hash;     /* hash list */
 225         struct  in_addr reserved1;      /* APPLE reserved: inp_faddr defined in protcol indep. part */
 226         struct  in_addr reserved2; /* APPLE reserved */
 227         u_short inp_fport;              /* foreign port */
 228         u_short inp_lport;              /* local port */
 229         LIST_ENTRY(inpcb) inp_list;     /* list for all PCBs of this proto */
 230         caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
 231         struct  inpcbinfo *inp_pcbinfo; /* PCB list info */
 232         void*   inp_socket;     /* back pointer to socket */
 233         u_char  nat_owner;              /* Used to NAT TCP/UDP traffic */
 234         u_long  nat_cookie;             /* Cookie stored and returned to NAT */
 235         LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
 236         struct  inpcbport *inp_phd;     /* head of this list */
 237         inp_gen_t inp_gencnt;           /* generation count of this instance */
 238         int     inp_flags;              /* generic IP/datagram flags */
 239         u_int32_t inp_flow;
 240
 241         u_char  inp_vflag;
 242
 243         u_char inp_ip_ttl;              /* time to live proto */
 244         u_char inp_ip_p;                /* protocol proto */
 245         /* protocol dependent part */
 246         union {
 247                 /* foreign host table entry */
 248                 struct  in_addr_4in6 inp46_foreign;
 249                 struct  in6_addr inp6_foreign;
 250         } inp_dependfaddr;
 251         union {
 252                 /* local host table entry */
 253                 struct  in_addr_4in6 inp46_local;
 254                 struct  in6_addr inp6_local;
 255         } inp_dependladdr;
 256         union {
 257                 /* placeholder for routing entry */
 258                 u_char  inp4_route[20];
 259                 u_char  inp6_route[32];
 260         } inp_dependroute;
 261         struct {
 262                 /* type of service proto */
 263                 u_char inp4_ip_tos;
 264                 /* IP options */
 265                 struct mbuf *inp4_options;
 266                 /* IP multicast options */
 267                 struct ip_moptions *inp4_moptions;
 268         } inp_depend4;
 269
 270         struct {
 271                 /* IP options */
 272                 struct mbuf *inp6_options;
 273                 u_int8_t        inp6_hlim;
 274                 u_int8_t        unused_uint8_1;
 275                 ushort  unused_uint16_1;
 276                 /* IP6 options for outgoing packets */
 277                 struct  ip6_pktopts *inp6_outputopts;
 278                 /* IP multicast options */
 279                 struct  ip6_moptions *inp6_moptions;
 280                 /* ICMPv6 code type filter */
 281                 struct  icmp6_filter *inp6_icmp6filt;
 282                 /* IPV6_CHECKSUM setsockopt */
 283                 int     inp6_cksum;
 284                 u_short inp6_ifindex;
 285                 short   inp6_hops;
 286         } inp_depend6;
 287
 288         int     hash_element;           /* Array index of pcb's hash list    */
 289         caddr_t inp_saved_ppcb;         /* place to save pointer while cached */
 290         struct inpcbpolicy *inp_sp;
 291         u_long  reserved[3];            /* For future use */
 292 };
 293
 294 struct  xinpcb {
 295         size_t  xi_len;         /* length of this structure */
 296 #ifdef KERNEL_PRIVATE
 297         struct  inpcb_compat xi_inp;
 298 #else
 299         struct  inpcb xi_inp;
 300 #endif
 301         struct  xsocket xi_socket;
 302         u_quad_t        xi_alignment_hack;
 303 };
 304
 305 struct  xinpgen {
 306         size_t  xig_len;        /* length of this structure */
 307         u_int   xig_count;      /* number of PCBs at this time */
 308         inp_gen_t xig_gen;      /* generation count at this time */
 309         so_gen_t xig_sogen;     /* socket generation count at this time */
 310 };
 311
 312 /*
 313  * These defines are for use with the inpcb.
 314  */
 315 #define INP_IPV4        0x1
 316 #define INP_IPV6        0x2
 317 #define inp_faddr       inp_dependfaddr.inp46_foreign.ia46_addr4
 318 #define inp_laddr       inp_dependladdr.inp46_local.ia46_addr4
 319 #define inp_route       inp_dependroute.inp4_route
 320 #define inp_ip_tos      inp_depend4.inp4_ip_tos
 321 #define inp_options     inp_depend4.inp4_options
 322 #define inp_moptions    inp_depend4.inp4_moptions
 323 #define in6p_faddr      inp_dependfaddr.inp6_foreign
 324 #define in6p_laddr      inp_dependladdr.inp6_local
 325 #define in6p_route      inp_dependroute.inp6_route
 326 #define in6p_ip6_hlim   inp_depend6.inp6_hlim
 327 #define in6p_hops       inp_depend6.inp6_hops   /* default hop limit */
 328 #define in6p_ip6_nxt    inp_ip_p
 329 #define in6p_flowinfo   inp_flow
 330 #define in6p_vflag      inp_vflag
 331 #define in6p_options    inp_depend6.inp6_options
 332 #define in6p_outputopts inp_depend6.inp6_outputopts
 333 #define in6p_moptions   inp_depend6.inp6_moptions
 334 #define in6p_icmp6filt  inp_depend6.inp6_icmp6filt
 335 #define in6p_cksum      inp_depend6.inp6_cksum
 336 #define inp6_ifindex    inp_depend6.inp6_ifindex
 337 #define in6p_flags      inp_flags  /* for KAME src sync over BSD*'s */
 338 #define in6p_socket     inp_socket  /* for KAME src sync over BSD*'s */
 339 #define in6p_lport      inp_lport  /* for KAME src sync over BSD*'s */
 340 #define in6p_fport      inp_fport  /* for KAME src sync over BSD*'s */
 341 #define in6p_ppcb       inp_ppcb  /* for KAME src sync over BSD*'s */
 342 #define in6p_state      inp_state
 343 #define in6p_wantcnt    inp_wantcnt
 344
 345 #ifdef KERNEL_PRIVATE
 346 struct inpcbport {
 347         LIST_ENTRY(inpcbport) phd_hash;
 348         struct inpcbhead phd_pcblist;
 349         u_short phd_port;
 350 };
 351
 352 struct inpcbinfo {              /* XXX documentation, prefixes */
 353         struct  inpcbhead *hashbase;
 354 #ifdef __APPLE__
 355         u_long  hashsize; /* in elements */
 356 #endif
 357         u_long  hashmask;
 358         struct  inpcbporthead *porthashbase;
 359         u_long  porthashmask;
 360         struct  inpcbhead *listhead;
 361         u_short lastport;
 362         u_short lastlow;
 363         u_short lasthi;
 364         void   *ipi_zone; /* zone to allocate pcbs from */
 365         u_int   ipi_count;      /* number of pcbs in this list */
 366         u_quad_t ipi_gencnt;    /* current generation count */
 367 #ifdef __APPLE__
 368         u_char   all_owners;
 369         struct  socket nat_dummy_socket; /* fake socket for NAT pcb backpointer */
 370         struct  inpcb *nat_dummy_pcb;    /* fake pcb for finding NAT mutex */
 371         caddr_t  dummy_cb;
 372 #ifdef _KERN_LOCKS_H_
 373         lck_attr_t              *mtx_attr;              /* mutex attributes */
 374         lck_grp_t                       *mtx_grp;                       /* mutex group definition */
 375         lck_grp_attr_t  *mtx_grp_attr;  /* mutex group attributes */
 376         lck_rw_t                        *mtx;                   /* global mutex for the pcblist*/
 377 #else
 378         void    *mtx_attr;      /* mutex attributes */
 379         void    *mtx_grp;       /* mutex group definition */
 380         void    *mtx_grp_attr;  /* mutex group attributes */
 381         void    *mtx;           /* global mutex for the pcblist*/
 382 #endif
 383 #endif
 384 };
 385
 386 #define INP_PCBHASH(faddr, lport, fport, mask) \
 387         (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
 388 #define INP_PCBPORTHASH(lport, mask) \
 389         (ntohs((lport)) & (mask))
 390
 391 #endif /* KERNEL_PRIVATE */
 392
 393 /* flags in inp_flags: */
 394 #define INP_RECVOPTS            0x01    /* receive incoming IP options */
 395 #define INP_RECVRETOPTS         0x02    /* receive IP options for reply */
 396 #define INP_RECVDSTADDR         0x04    /* receive IP dst address */
 397 #define INP_HDRINCL             0x08    /* user supplies entire IP header */
 398 #define INP_HIGHPORT            0x10    /* user wants "high" port binding */
 399 #define INP_LOWPORT             0x20    /* user wants "low" port binding */
 400 #define INP_ANONPORT            0x40    /* port chosen for user */
 401 #define INP_RECVIF              0x80    /* receive incoming interface */
 402 #define INP_MTUDISC             0x100   /* user can do MTU discovery */
 403 #ifdef __APPLE__
 404 #define INP_STRIPHDR            0x200   /* Strip headers in raw_ip, for OT support */
 405 #endif
 406 #define  INP_FAITH                      0x400   /* accept FAITH'ed connections */
 407 #define  INP_INADDR_ANY         0x800   /* local address wasn't specified */
 408
 409 #define INP_RECVTTL             0x1000
 410
 411 #define IN6P_IPV6_V6ONLY        0x008000 /* restrict AF_INET6 socket for v6 */
 412
 413 #define IN6P_PKTINFO            0x010000 /* receive IP6 dst and I/F */
 414 #define IN6P_HOPLIMIT           0x020000 /* receive hoplimit */
 415 #define IN6P_HOPOPTS            0x040000 /* receive hop-by-hop options */
 416 #define IN6P_DSTOPTS            0x080000 /* receive dst options after rthdr */
 417 #define IN6P_RTHDR              0x100000 /* receive routing header */
 418 #define IN6P_RTHDRDSTOPTS       0x200000 /* receive dstoptions before rthdr */
 419 #define IN6P_AUTOFLOWLABEL      0x800000 /* attach flowlabel automatically */
 420 #define IN6P_BINDV6ONLY         0x10000000 /* do not grab IPv4 traffic */
 421
 422 #ifdef KERNEL_PRIVATE
 423 #define INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
 424                                         INP_RECVIF|\
 425                                  IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
 426                                  IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
 427                                  IN6P_AUTOFLOWLABEL|INP_RECVTTL)
 428 #define INP_UNMAPPABLEOPTS      (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
 429                                  IN6P_AUTOFLOWLABEL)
 430
 431  /* for KAME src sync over BSD*'s */
 432 #define IN6P_HIGHPORT           INP_HIGHPORT
 433 #define IN6P_LOWPORT            INP_LOWPORT
 434 #define IN6P_ANONPORT           INP_ANONPORT
 435 #define IN6P_RECVIF             INP_RECVIF
 436 #define IN6P_MTUDISC            INP_MTUDISC
 437 #define IN6P_FAITH              INP_FAITH
 438 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
 439         /*
 440          * socket AF version is {newer than,or include}
 441          * actual datagram AF version
 442          */
 443
 444 #define INPLOOKUP_WILDCARD      1
 445 #ifdef __APPLE__
 446 #define INPCB_ALL_OWNERS        0xff
 447 #define INPCB_NO_OWNER          0x0
 448 #define INPCB_OWNED_BY_X        0x80
 449 #define INPCB_MAX_IDS           7
 450 #endif /* __APPLE__ */
 451
 452 #define sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)
 453 #define sotoin6pcb(so)  sotoinpcb(so) /* for KAME src sync over BSD*'s */
 454
 455 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
 456
 457 #define INP_CHECK_SOCKAF(so, af)        (INP_SOCKAF(so) == af)
 458
 459 #ifdef KERNEL
 460 extern int      ipport_lowfirstauto;
 461 extern int      ipport_lowlastauto;
 462 extern int      ipport_firstauto;
 463 extern int      ipport_lastauto;
 464 extern int      ipport_hifirstauto;
 465 extern int      ipport_hilastauto;
 466
 467 #define INPCB_STATE_INUSE       0x1     /* freshly allocated PCB, it's in use */
 468 #define INPCB_STATE_CACHED      0x2     /* this pcb is sitting in a a cache */
 469 #define INPCB_STATE_DEAD        0x3     /* should treat as gone, will be garbage collected and freed */
 470
 471 #define WNT_STOPUSING   0xffff  /* marked as ready to be garbaged collected, should be treated as not found */
 472 #define WNT_ACQUIRE     0x1             /* that pcb is being acquired, do not recycle this time */
 473 #define WNT_RELEASE     0x2             /* release acquired mode, can be garbage collected when wantcnt is null */
 474
 475
 476 void    in_pcbpurgeif0(struct inpcb *, struct ifnet *);
 477 void    in_losing(struct inpcb *);
 478 void    in_rtchange(struct inpcb *, int);
 479 int     in_pcballoc(struct socket *, struct inpcbinfo *, struct proc *);
 480 int     in_pcbbind(struct inpcb *, struct sockaddr *, struct proc *);
 481 int     in_pcbconnect(struct inpcb *, struct sockaddr *, struct proc *);
 482 void    in_pcbdetach(struct inpcb *);
 483 void    in_pcbdispose (struct inpcb *);
 484 void    in_pcbdisconnect(struct inpcb *);
 485 int     in_pcbinshash(struct inpcb *, int);
 486 int     in_pcbladdr(struct inpcb *, struct sockaddr *, struct sockaddr_in **);
 487 struct inpcb *
 488         in_pcblookup_local(struct inpcbinfo *, struct in_addr, u_int, int);
 489 struct inpcb *
 490         in_pcblookup_hash(struct inpcbinfo *,
 491                                struct in_addr, u_int, struct in_addr, u_int,
 492                                int, struct ifnet *);
 493 void    in_pcbnotifyall(struct inpcbinfo *, struct in_addr,
 494             int, void (*)(struct inpcb *, int));
 495 void    in_pcbrehash(struct inpcb *);
 496 int     in_setpeeraddr(struct socket *so, struct sockaddr **nam);
 497 int     in_setsockaddr(struct socket *so, struct sockaddr **nam);
 498 int     in_pcb_checkstate(struct inpcb *pcb, int mode, int locked);
 499
 500 int
 501 in_pcb_grab_port (struct inpcbinfo *pcbinfo,
 502                        u_short          options,
 503                        struct in_addr   laddr,
 504                        u_short          *lport,
 505                        struct in_addr   faddr,
 506                        u_short          fport,
 507                        u_int            cookie,
 508                        u_char           owner_id);
 509
 510 int
 511 in_pcb_letgo_port(struct inpcbinfo *pcbinfo,
 512                        struct in_addr laddr,
 513                        u_short lport,
 514                        struct in_addr faddr,
 515                        u_short fport, u_char owner_id);
 516
 517 u_char
 518 in_pcb_get_owner(struct inpcbinfo *pcbinfo,
 519                       struct in_addr laddr,
 520                       u_short lport,
 521                       struct in_addr faddr,
 522                       u_short fport,
 523                       u_int *cookie);
 524
 525 void in_pcb_nat_init(struct inpcbinfo *pcbinfo, int afamily, int pfamily,
 526                      int protocol);
 527
 528 int
 529 in_pcb_new_share_client(struct inpcbinfo *pcbinfo, u_char *owner_id);
 530
 531 int
 532 in_pcb_rem_share_client(struct inpcbinfo *pcbinfo, u_char owner_id);
 533
 534 void    in_pcbremlists(struct inpcb *inp);
 535 int     in_pcb_ckeckstate(struct inpcb *, int, int);
 536 void    inpcb_to_compat(struct inpcb *inp, struct inpcb_compat *inp_compat);
 537
 538 #endif /* KERNEL */
 539 #endif /* KERNEL_PRIVATE */
 540
 541 #endif /* !_NETINET_IN_PCB_H_ */