bsd/netinet/in_pcb.h

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