bsd/netinet/in_pcb.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1990, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)in_pcb.h    8.1 (Berkeley) 6/10/93
  55  * $FreeBSD: src/sys/netinet/in_pcb.h,v 1.32.2.4 2001/08/13 16:26:17 ume Exp $
  56  */
  57
  58 #ifndef _NETINET_IN_PCB_H_
  59 #define _NETINET_IN_PCB_H_
  60 #include <sys/appleapiopts.h>
  61
  62 #include <sys/types.h>
  63 #include <sys/queue.h>
  64 #ifdef KERNEL_PRIVATE
  65 #ifdef KERNEL
  66 #include <kern/locks.h>
  67 #endif
  68 #endif /* KERNEL_PRIVATE */
  69
  70 #include <netinet6/ipsec.h> /* for IPSEC */
  71
  72 #ifdef KERNEL_PRIVATE
  73
  74 #define in6pcb          inpcb   /* for KAME src sync over BSD*'s */
  75 #define in6p_sp         inp_sp  /* for KAME src sync over BSD*'s */
  76
  77 /*
  78  * Common structure pcb for internet protocol implementation.
  79  * Here are stored pointers to local and foreign host table
  80  * entries, local and foreign socket numbers, and pointers
  81  * up (to a socket structure) and down (to a protocol-specific)
  82  * control block.
  83  */
  84 LIST_HEAD(inpcbhead, inpcb);
  85 LIST_HEAD(inpcbporthead, inpcbport);
  86 #endif /* KERNEL_PRIVATE */
  87 typedef u_quad_t        inp_gen_t;
  88
  89 /*
  90  * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
  91  * So, AF_INET6 null laddr is also used as AF_INET null laddr,
  92  * by utilize following structure. (At last, same as INRIA)
  93  */
  94 struct in_addr_4in6 {
  95         u_int32_t       ia46_pad32[3];
  96         struct  in_addr ia46_addr4;
  97 };
  98
  99 #ifdef KERNEL_PRIVATE
 100 /*
 101  * NB: the zone allocator is type-stable EXCEPT FOR THE FIRST TWO LONGS
 102  * of the structure.  Therefore, it is important that the members in
 103  * that position not contain any information which is required to be
 104  * stable.
 105  */
 106 struct  icmp6_filter;
 107
 108 struct inpcb {
 109         LIST_ENTRY(inpcb) inp_hash;     /* hash list */
 110         int             inp_wantcnt;            /* pcb wanted count. protected by pcb list lock */
 111         int             inp_state;              /* state of this pcb, in use, recycled, ready for recycling... */
 112         u_short inp_fport;              /* foreign port */
 113         u_short inp_lport;              /* local port */
 114         LIST_ENTRY(inpcb) inp_list;     /* list for all PCBs of this proto */
 115         caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
 116         struct  inpcbinfo *inp_pcbinfo; /* PCB list info */
 117         struct  socket *inp_socket;     /* back pointer to socket */
 118         u_char  nat_owner;              /* Used to NAT TCP/UDP traffic */
 119         u_long  nat_cookie;             /* Cookie stored and returned to NAT */
 120         LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
 121         struct  inpcbport *inp_phd;     /* head of this list */
 122         inp_gen_t inp_gencnt;           /* generation count of this instance */
 123         int     inp_flags;              /* generic IP/datagram flags */
 124         u_int32_t inp_flow;
 125
 126         u_char  inp_vflag;      /* INP_IPV4 or INP_IPV6 */
 127
 128         u_char inp_ip_ttl;              /* time to live proto */
 129         u_char inp_ip_p;                /* protocol proto */
 130         /* protocol dependent part */
 131         union {
 132                 /* foreign host table entry */
 133                 struct  in_addr_4in6 inp46_foreign;
 134                 struct  in6_addr inp6_foreign;
 135         } inp_dependfaddr;
 136         union {
 137                 /* local host table entry */
 138                 struct  in_addr_4in6 inp46_local;
 139                 struct  in6_addr inp6_local;
 140         } inp_dependladdr;
 141         union {
 142                 /* placeholder for routing entry */
 143                 struct  route inp4_route;
 144                 struct  route_in6 inp6_route;
 145         } inp_dependroute;
 146         struct {
 147                 /* type of service proto */
 148                 u_char inp4_ip_tos;
 149                 /* IP options */
 150                 struct mbuf *inp4_options;
 151                 /* IP multicast options */
 152                 struct ip_moptions *inp4_moptions;
 153         } inp_depend4;
 154         struct {
 155                 /* IP options */
 156                 struct mbuf *inp6_options;
 157                 u_int8_t        inp6_hlim;
 158                 u_int8_t        unused_uint8_1;
 159                 ushort  unused_uint16_1;
 160                 /* IP6 options for outgoing packets */
 161                 struct  ip6_pktopts *inp6_outputopts;
 162                 /* IP multicast options */
 163                 struct  ip6_moptions *inp6_moptions;
 164                 /* ICMPv6 code type filter */
 165                 struct  icmp6_filter *inp6_icmp6filt;
 166                 /* IPV6_CHECKSUM setsockopt */
 167                 int     inp6_cksum;
 168                 u_short inp6_ifindex;
 169                 short   inp6_hops;
 170         } inp_depend6;
 171
 172         int     hash_element;           /* Array index of pcb's hash list    */
 173         caddr_t inp_saved_ppcb;         /* place to save pointer while cached */
 174         struct inpcbpolicy *inp_sp;
 175 #ifdef _KERN_LOCKS_H_
 176         lck_mtx_t *inpcb_mtx;   /* inpcb per-socket mutex */
 177 #else
 178         void      *inpcb_mtx;
 179 #endif
 180         u_long  reserved[2];            /* For future use */
 181 };
 182
 183 #endif /* KERNEL_PRIVATE */
 184
 185 /*
 186  * The range of the generation count, as used in this implementation,
 187  * is 9e19.  We would have to create 300 billion connections per
 188  * second for this number to roll over in a year.  This seems sufficiently
 189  * unlikely that we simply don't concern ourselves with that possibility.
 190  */
 191
 192 /*
 193  * Interface exported to userland by various protocols which use
 194  * inpcbs.  Hack alert -- only define if struct xsocket is in scope.
 195  */
 196
 197 /*
 198  * This is a copy of the inpcb as it shipped in Panther. This structure
 199  * is filled out in a copy function. This allows the inpcb to change
 200  * without breaking userland tools.
 201  *
 202  * CAUTION: Many fields may not be filled out. Fewer may be filled out
 203  * in the future. Code defensively.
 204  */
 205 #ifdef KERNEL_PRIVATE
 206 struct inpcb_compat {
 207 #else
 208 struct inpcbinfo;
 209 struct inpcbport;
 210 struct mbuf;
 211 struct  ip6_pktopts;
 212 struct  ip6_moptions;
 213 struct  icmp6_filter;
 214 struct inpcbpolicy;
 215
 216 struct inpcb {
 217 #endif /* KERNEL_PRIVATE */
 218         LIST_ENTRY(inpcb) inp_hash;     /* hash list */
 219         struct  in_addr reserved1;      /* APPLE reserved: inp_faddr defined in protcol indep. part */
 220         struct  in_addr reserved2; /* APPLE reserved */
 221         u_short inp_fport;              /* foreign port */
 222         u_short inp_lport;              /* local port */
 223         LIST_ENTRY(inpcb) inp_list;     /* list for all PCBs of this proto */
 224         caddr_t inp_ppcb;               /* pointer to per-protocol pcb */
 225         struct  inpcbinfo *inp_pcbinfo; /* PCB list info */
 226         void*   inp_socket;     /* back pointer to socket */
 227         u_char  nat_owner;              /* Used to NAT TCP/UDP traffic */
 228         u_long  nat_cookie;             /* Cookie stored and returned to NAT */
 229         LIST_ENTRY(inpcb) inp_portlist; /* list for this PCB's local port */
 230         struct  inpcbport *inp_phd;     /* head of this list */
 231         inp_gen_t inp_gencnt;           /* generation count of this instance */
 232         int     inp_flags;              /* generic IP/datagram flags */
 233         u_int32_t inp_flow;
 234
 235         u_char  inp_vflag;
 236
 237         u_char inp_ip_ttl;              /* time to live proto */
 238         u_char inp_ip_p;                /* protocol proto */
 239         /* protocol dependent part */
 240         union {
 241                 /* foreign host table entry */
 242                 struct  in_addr_4in6 inp46_foreign;
 243                 struct  in6_addr inp6_foreign;
 244         } inp_dependfaddr;
 245         union {
 246                 /* local host table entry */
 247                 struct  in_addr_4in6 inp46_local;
 248                 struct  in6_addr inp6_local;
 249         } inp_dependladdr;
 250         union {
 251                 /* placeholder for routing entry */
 252                 u_char  inp4_route[20];
 253                 u_char  inp6_route[32];
 254         } inp_dependroute;
 255         struct {
 256                 /* type of service proto */
 257                 u_char inp4_ip_tos;
 258                 /* IP options */
 259                 struct mbuf *inp4_options;
 260                 /* IP multicast options */
 261                 struct ip_moptions *inp4_moptions;
 262         } inp_depend4;
 263
 264         struct {
 265                 /* IP options */
 266                 struct mbuf *inp6_options;
 267                 u_int8_t        inp6_hlim;
 268                 u_int8_t        unused_uint8_1;
 269                 ushort  unused_uint16_1;
 270                 /* IP6 options for outgoing packets */
 271                 struct  ip6_pktopts *inp6_outputopts;
 272                 /* IP multicast options */
 273                 struct  ip6_moptions *inp6_moptions;
 274                 /* ICMPv6 code type filter */
 275                 struct  icmp6_filter *inp6_icmp6filt;
 276                 /* IPV6_CHECKSUM setsockopt */
 277                 int     inp6_cksum;
 278                 u_short inp6_ifindex;
 279                 short   inp6_hops;
 280         } inp_depend6;
 281
 282         int     hash_element;           /* Array index of pcb's hash list    */
 283         caddr_t inp_saved_ppcb;         /* place to save pointer while cached */
 284         struct inpcbpolicy *inp_sp;
 285         u_long  reserved[3];            /* For future use */
 286 };
 287
 288 struct  xinpcb {
 289         size_t  xi_len;         /* length of this structure */
 290 #ifdef KERNEL_PRIVATE
 291         struct  inpcb_compat xi_inp;
 292 #else
 293         struct  inpcb xi_inp;
 294 #endif
 295         struct  xsocket xi_socket;
 296         u_quad_t        xi_alignment_hack;
 297 };
 298
 299 struct  xinpgen {
 300         size_t  xig_len;        /* length of this structure */
 301         u_int   xig_count;      /* number of PCBs at this time */
 302         inp_gen_t xig_gen;      /* generation count at this time */
 303         so_gen_t xig_sogen;     /* socket generation count at this time */
 304 };
 305
 306 /*
 307  * These defines are for use with the inpcb.
 308  */
 309 #define INP_IPV4        0x1
 310 #define INP_IPV6        0x2
 311 #define inp_faddr       inp_dependfaddr.inp46_foreign.ia46_addr4
 312 #define inp_laddr       inp_dependladdr.inp46_local.ia46_addr4
 313 #define inp_route       inp_dependroute.inp4_route
 314 #define inp_ip_tos      inp_depend4.inp4_ip_tos
 315 #define inp_options     inp_depend4.inp4_options
 316 #define inp_moptions    inp_depend4.inp4_moptions
 317 #define in6p_faddr      inp_dependfaddr.inp6_foreign
 318 #define in6p_laddr      inp_dependladdr.inp6_local
 319 #define in6p_route      inp_dependroute.inp6_route
 320 #define in6p_ip6_hlim   inp_depend6.inp6_hlim
 321 #define in6p_hops       inp_depend6.inp6_hops   /* default hop limit */
 322 #define in6p_ip6_nxt    inp_ip_p
 323 #define in6p_flowinfo   inp_flow
 324 #define in6p_vflag      inp_vflag
 325 #define in6p_options    inp_depend6.inp6_options
 326 #define in6p_outputopts inp_depend6.inp6_outputopts
 327 #define in6p_moptions   inp_depend6.inp6_moptions
 328 #define in6p_icmp6filt  inp_depend6.inp6_icmp6filt
 329 #define in6p_cksum      inp_depend6.inp6_cksum
 330 #define inp6_ifindex    inp_depend6.inp6_ifindex
 331 #define in6p_flags      inp_flags  /* for KAME src sync over BSD*'s */
 332 #define in6p_socket     inp_socket  /* for KAME src sync over BSD*'s */
 333 #define in6p_lport      inp_lport  /* for KAME src sync over BSD*'s */
 334 #define in6p_fport      inp_fport  /* for KAME src sync over BSD*'s */
 335 #define in6p_ppcb       inp_ppcb  /* for KAME src sync over BSD*'s */
 336 #define in6p_state      inp_state
 337 #define in6p_wantcnt    inp_wantcnt
 338
 339 #ifdef KERNEL_PRIVATE
 340 struct inpcbport {
 341         LIST_ENTRY(inpcbport) phd_hash;
 342         struct inpcbhead phd_pcblist;
 343         u_short phd_port;
 344 };
 345
 346 struct inpcbinfo {              /* XXX documentation, prefixes */
 347         struct  inpcbhead *hashbase;
 348 #ifdef __APPLE__
 349         u_long  hashsize; /* in elements */
 350 #endif
 351         u_long  hashmask;
 352         struct  inpcbporthead *porthashbase;
 353         u_long  porthashmask;
 354         struct  inpcbhead *listhead;
 355         u_short lastport;
 356         u_short lastlow;
 357         u_short lasthi;
 358         void   *ipi_zone; /* zone to allocate pcbs from */
 359         u_int   ipi_count;      /* number of pcbs in this list */
 360         u_quad_t ipi_gencnt;    /* current generation count */
 361 #ifdef __APPLE__
 362         u_char   all_owners;
 363         struct  socket nat_dummy_socket; /* fake socket for NAT pcb backpointer */
 364         struct  inpcb *nat_dummy_pcb;    /* fake pcb for finding NAT mutex */
 365         caddr_t  dummy_cb;
 366 #ifdef _KERN_LOCKS_H_
 367         lck_attr_t              *mtx_attr;              /* mutex attributes */
 368         lck_grp_t                       *mtx_grp;                       /* mutex group definition */
 369         lck_grp_attr_t  *mtx_grp_attr;  /* mutex group attributes */
 370         lck_rw_t                        *mtx;                   /* global mutex for the pcblist*/
 371 #else
 372         void    *mtx_attr;      /* mutex attributes */
 373         void    *mtx_grp;       /* mutex group definition */
 374         void    *mtx_grp_attr;  /* mutex group attributes */
 375         void    *mtx;           /* global mutex for the pcblist*/
 376 #endif
 377 #endif
 378 };
 379
 380 #define INP_PCBHASH(faddr, lport, fport, mask) \
 381         (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
 382 #define INP_PCBPORTHASH(lport, mask) \
 383         (ntohs((lport)) & (mask))
 384
 385 #endif /* KERNEL_PRIVATE */
 386
 387 /* flags in inp_flags: */
 388 #define INP_RECVOPTS            0x01    /* receive incoming IP options */
 389 #define INP_RECVRETOPTS         0x02    /* receive IP options for reply */
 390 #define INP_RECVDSTADDR         0x04    /* receive IP dst address */
 391 #define INP_HDRINCL             0x08    /* user supplies entire IP header */
 392 #define INP_HIGHPORT            0x10    /* user wants "high" port binding */
 393 #define INP_LOWPORT             0x20    /* user wants "low" port binding */
 394 #define INP_ANONPORT            0x40    /* port chosen for user */
 395 #define INP_RECVIF              0x80    /* receive incoming interface */
 396 #define INP_MTUDISC             0x100   /* user can do MTU discovery */
 397 #ifdef __APPLE__
 398 #define INP_STRIPHDR            0x200   /* Strip headers in raw_ip, for OT support */
 399 #endif
 400 #define  INP_FAITH                      0x400   /* accept FAITH'ed connections */
 401 #define  INP_INADDR_ANY         0x800   /* local address wasn't specified */
 402
 403 #define INP_RECVTTL             0x1000
 404
 405 #define IN6P_IPV6_V6ONLY        0x008000 /* restrict AF_INET6 socket for v6 */
 406
 407 #define IN6P_PKTINFO            0x010000 /* receive IP6 dst and I/F */
 408 #define IN6P_HOPLIMIT           0x020000 /* receive hoplimit */
 409 #define IN6P_HOPOPTS            0x040000 /* receive hop-by-hop options */
 410 #define IN6P_DSTOPTS            0x080000 /* receive dst options after rthdr */
 411 #define IN6P_RTHDR              0x100000 /* receive routing header */
 412 #define IN6P_RTHDRDSTOPTS       0x200000 /* receive dstoptions before rthdr */
 413 #define IN6P_AUTOFLOWLABEL      0x800000 /* attach flowlabel automatically */
 414 #define IN6P_BINDV6ONLY         0x10000000 /* do not grab IPv4 traffic */
 415
 416 #ifdef KERNEL_PRIVATE
 417 #define INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
 418                                         INP_RECVIF|\
 419                                  IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
 420                                  IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
 421                                  IN6P_AUTOFLOWLABEL|INP_RECVTTL)
 422 #define INP_UNMAPPABLEOPTS      (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
 423                                  IN6P_AUTOFLOWLABEL)
 424
 425  /* for KAME src sync over BSD*'s */
 426 #define IN6P_HIGHPORT           INP_HIGHPORT
 427 #define IN6P_LOWPORT            INP_LOWPORT
 428 #define IN6P_ANONPORT           INP_ANONPORT
 429 #define IN6P_RECVIF             INP_RECVIF
 430 #define IN6P_MTUDISC            INP_MTUDISC
 431 #define IN6P_FAITH              INP_FAITH
 432 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
 433         /*
 434          * socket AF version is {newer than,or include}
 435          * actual datagram AF version
 436          */
 437
 438 #define INPLOOKUP_WILDCARD      1
 439 #ifdef __APPLE__
 440 #define INPCB_ALL_OWNERS        0xff
 441 #define INPCB_NO_OWNER          0x0
 442 #define INPCB_OWNED_BY_X        0x80
 443 #define INPCB_MAX_IDS           7
 444 #endif /* __APPLE__ */
 445
 446 #define sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)
 447 #define sotoin6pcb(so)  sotoinpcb(so) /* for KAME src sync over BSD*'s */
 448
 449 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
 450
 451 #define INP_CHECK_SOCKAF(so, af)        (INP_SOCKAF(so) == af)
 452
 453 #ifdef KERNEL
 454 extern int      ipport_lowfirstauto;
 455 extern int      ipport_lowlastauto;
 456 extern int      ipport_firstauto;
 457 extern int      ipport_lastauto;
 458 extern int      ipport_hifirstauto;
 459 extern int      ipport_hilastauto;
 460
 461 #define INPCB_STATE_INUSE       0x1     /* freshly allocated PCB, it's in use */
 462 #define INPCB_STATE_CACHED      0x2     /* this pcb is sitting in a a cache */
 463 #define INPCB_STATE_DEAD        0x3     /* should treat as gone, will be garbage collected and freed */
 464
 465 #define WNT_STOPUSING   0xffff  /* marked as ready to be garbaged collected, should be treated as not found */
 466 #define WNT_ACQUIRE     0x1             /* that pcb is being acquired, do not recycle this time */
 467 #define WNT_RELEASE     0x2             /* release acquired mode, can be garbage collected when wantcnt is null */
 468
 469
 470 void    in_pcbpurgeif0(struct inpcb *, struct ifnet *);
 471 void    in_losing(struct inpcb *);
 472 void    in_rtchange(struct inpcb *, int);
 473 int     in_pcballoc(struct socket *, struct inpcbinfo *, struct proc *);
 474 int     in_pcbbind(struct inpcb *, struct sockaddr *, struct proc *);
 475 int     in_pcbconnect(struct inpcb *, struct sockaddr *, struct proc *);
 476 void    in_pcbdetach(struct inpcb *);
 477 void    in_pcbdispose (struct inpcb *);
 478 void    in_pcbdisconnect(struct inpcb *);
 479 int     in_pcbinshash(struct inpcb *, int);
 480 int     in_pcbladdr(struct inpcb *, struct sockaddr *, struct sockaddr_in **);
 481 struct inpcb *
 482         in_pcblookup_local(struct inpcbinfo *, struct in_addr, u_int, int);
 483 struct inpcb *
 484         in_pcblookup_hash(struct inpcbinfo *,
 485                                struct in_addr, u_int, struct in_addr, u_int,
 486                                int, struct ifnet *);
 487 void    in_pcbnotifyall(struct inpcbinfo *, struct in_addr,
 488             int, void (*)(struct inpcb *, int));
 489 void    in_pcbrehash(struct inpcb *);
 490 int     in_setpeeraddr(struct socket *so, struct sockaddr **nam);
 491 int     in_setsockaddr(struct socket *so, struct sockaddr **nam);
 492 int     in_pcb_checkstate(struct inpcb *pcb, int mode, int locked);
 493
 494 int
 495 in_pcb_grab_port (struct inpcbinfo *pcbinfo,
 496                        u_short          options,
 497                        struct in_addr   laddr,
 498                        u_short          *lport,
 499                        struct in_addr   faddr,
 500                        u_short          fport,
 501                        u_int            cookie,
 502                        u_char           owner_id);
 503
 504 int
 505 in_pcb_letgo_port(struct inpcbinfo *pcbinfo,
 506                        struct in_addr laddr,
 507                        u_short lport,
 508                        struct in_addr faddr,
 509                        u_short fport, u_char owner_id);
 510
 511 u_char
 512 in_pcb_get_owner(struct inpcbinfo *pcbinfo,
 513                       struct in_addr laddr,
 514                       u_short lport,
 515                       struct in_addr faddr,
 516                       u_short fport,
 517                       u_int *cookie);
 518
 519 void in_pcb_nat_init(struct inpcbinfo *pcbinfo, int afamily, int pfamily,
 520                      int protocol);
 521
 522 int
 523 in_pcb_new_share_client(struct inpcbinfo *pcbinfo, u_char *owner_id);
 524
 525 int
 526 in_pcb_rem_share_client(struct inpcbinfo *pcbinfo, u_char owner_id);
 527
 528 void    in_pcbremlists(struct inpcb *inp);
 529 int     in_pcb_ckeckstate(struct inpcb *, int, int);
 530 void    inpcb_to_compat(struct inpcb *inp, struct inpcb_compat *inp_compat);
 531
 532 #endif /* KERNEL */
 533 #endif /* KERNEL_PRIVATE */
 534
 535 #endif /* !_NETINET_IN_PCB_H_ */