bsd/sys/protosw.h

   1 /*
   2  * Copyright (c) 2000-2014 Apple 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 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  29 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  30 /*
  31  * Copyright (c) 1982, 1986, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)protosw.h   8.1 (Berkeley) 6/2/93
  63  * $FreeBSD: src/sys/sys/protosw.h,v 1.28.2.2 2001/07/03 11:02:01 ume Exp $
  64  */
  65
  66 #ifndef _SYS_PROTOSW_H_
  67 #define _SYS_PROTOSW_H_
  68
  69 #include <sys/appleapiopts.h>
  70 #include <sys/cdefs.h>
  71
  72 /* XXX: this will go away */
  73 #define PR_SLOWHZ       2               /* 2 slow timeouts per second */
  74
  75 #ifdef KERNEL_PRIVATE
  76 #include <sys/socket.h>
  77 #include <sys/socketvar.h>
  78 #include <sys/queue.h>
  79 #include <kern/locks.h>
  80
  81 /* Forward declare these structures referenced from prototypes below. */
  82 struct mbuf;
  83 struct proc;
  84 struct sockaddr;
  85 struct socket;
  86 struct sockopt;
  87 struct socket_filter;
  88 #ifdef XNU_KERNEL_PRIVATE
  89 struct domain_old;
  90 #endif /* XNU_KERNEL_PRIVATE */
  91
  92 #pragma pack(4)
  93
  94 #ifdef XNU_KERNEL_PRIVATE
  95 /*
  96  * Legacy protocol switch table.
  97  *
  98  * NOTE: Do not modify this structure, as there are modules outside of xnu
  99  * which rely on the size and layout for binary compatibility.  This structure
 100  * is simply used by the exported net_{add,del}_proto_old, pffindproto_old
 101  * routines, and by the domain_old structure.  Internally, protocol switch
 102  * tables are stored in the private variant of protosw defined down below.
 103  */
 104 struct protosw_old {
 105 #else
 106 struct protosw {
 107 #endif /* !XNU_KERNEL_PRIVATE */
 108         short   pr_type;                /* socket type used for */
 109         struct  domain *pr_domain;      /* domain protocol a member of */
 110         short   pr_protocol;            /* protocol number */
 111         unsigned int pr_flags;          /* see below */
 112         /*
 113          * protocol-protocol hooks
 114          */
 115         void    (*pr_input)             /* input to protocol (from below) */
 116                     (struct mbuf *, int len);
 117         int     (*pr_output)            /* output to protocol (from above) */
 118                     (struct mbuf *m, struct socket *so);
 119         void    (*pr_ctlinput)          /* control input (from below) */
 120                     (int, struct sockaddr *, void *);
 121         int     (*pr_ctloutput)         /* control output (from above) */
 122                     (struct socket *, struct sockopt *);
 123         /*
 124          * user-protocol hook
 125          */
 126         void    *pr_ousrreq;
 127         /*
 128          * utility hooks
 129          */
 130         void    (*pr_init)(void);       /* initialization hook */
 131         void    (*pr_unused)(void);     /* placeholder - fasttimo is removed */
 132         void    (*pr_unused2)(void);    /* placeholder - slowtimo is removed */
 133         void    (*pr_drain)(void);      /* flush any excess space possible */
 134         int     (*pr_sysctl)            /* sysctl for protocol */
 135                     (int *, u_int, void *, size_t *, void *, size_t);
 136 #ifdef XNU_KERNEL_PRIVATE
 137         struct  pr_usrreqs_old *pr_usrreqs; /* supersedes pr_usrreq() */
 138 #else
 139         struct  pr_usrreqs *pr_usrreqs; /* supersedes pr_usrreq() */
 140 #endif /* !XNU_KERNEL_PRIVATE */
 141         int     (*pr_lock)              /* lock function for protocol */
 142                     (struct socket *so, int locktype, void *debug);
 143         int     (*pr_unlock)            /* unlock for protocol */
 144                     (struct socket *so, int locktype, void *debug);
 145         lck_mtx_t *(*pr_getlock)        /* retrieve protocol lock */
 146                     (struct socket *so, int locktype);
 147         /*
 148          * Implant hooks
 149          */
 150         TAILQ_HEAD(, socket_filter) pr_filter_head;
 151 #ifdef XNU_KERNEL_PRIVATE
 152         struct protosw_old *pr_next;    /* chain for domain */
 153 #else
 154         struct protosw *pr_next;        /* chain for domain */
 155 #endif /* !XNU_KERNEL_PRIVATE */
 156         u_int32_t       reserved[1];    /* padding for future use */
 157 };
 158
 159 #pragma pack()
 160
 161 #ifdef XNU_KERNEL_PRIVATE
 162 /*
 163  * Protocol switch table.
 164  *
 165  * Each protocol has a handle initializing one of these structures,
 166  * which is used for protocol-protocol and system-protocol communication.
 167  *
 168  * A protocol is called through the pr_init entry before any other.
 169  * The system will call the pr_drain entry if it is low on space and this
 170  * should throw away any non-critical data.
 171  *
 172  * Protocols pass data between themselves as chains of mbufs using
 173  * the pr_input and pr_output hooks.  Pr_input passes data up (towards
 174  * the users) and pr_output passes it down (towards the interfaces); control
 175  * information passes up and down on pr_ctlinput and pr_ctloutput.
 176  * The protocol is responsible for the space occupied by any the
 177  * arguments to these entries and must dispose it.
 178  *
 179  * The userreq routine interfaces protocols to the system and is
 180  * described below.
 181  *
 182  * After a protocol is attached, its pr_domain will be set to the domain
 183  * which the protocol belongs to, and its pr_protosw will be set to the
 184  * address of the protosw instance.  The latter is useful for finding
 185  * the real/original protosw instance, in the event so_proto is altered
 186  * to point to an alternative/derivative protosw.  E.g. the list of
 187  * socket filters is only applicable on the original protosw instance.
 188  *
 189  * Internal, private and extendable representation of protosw.
 190  */
 191 struct protosw {
 192         TAILQ_ENTRY(protosw) pr_entry; /* chain for domain */
 193         struct  domain *pr_domain;      /* domain protocol a member of */
 194         struct protosw *pr_protosw;     /* pointer to self */
 195         u_int16_t pr_type;              /* socket type used for */
 196         u_int16_t pr_protocol;          /* protocol number */
 197         u_int32_t pr_flags;             /* see below */
 198         /*
 199          * protocol-protocol hooks
 200          */
 201         void    (*pr_input)             /* input to protocol (from below) */
 202                     (struct mbuf *, int len);
 203         int     (*pr_output)            /* output to protocol (from above) */
 204                     (struct mbuf *m, struct socket *so);
 205         void    (*pr_ctlinput)          /* control input (from below) */
 206                     (int, struct sockaddr *, void *);
 207         int     (*pr_ctloutput)         /* control output (from above) */
 208                     (struct socket *, struct sockopt *);
 209         /*
 210          * user-protocol hook
 211          */
 212         struct  pr_usrreqs *pr_usrreqs; /* user request; see list below */
 213         /*
 214          * utility hooks
 215          */
 216         void    (*pr_init)              /* initialization hook */
 217                     (struct protosw *, struct domain *);
 218         void    (*pr_drain)(void);      /* flush any excess space possible */
 219         int     (*pr_sysctl)            /* sysctl for protocol */
 220                     (int *, u_int, void *, size_t *, void *, size_t);
 221         int     (*pr_lock)              /* lock function for protocol */
 222                     (struct socket *so, int locktype, void *debug);
 223         int     (*pr_unlock)            /* unlock for protocol */
 224                     (struct socket *so, int locktype, void *debug);
 225         lck_mtx_t *(*pr_getlock)        /* retrieve protocol lock */
 226                     (struct socket *so, int locktype);
 227         /*
 228          * misc
 229          */
 230         TAILQ_HEAD(, socket_filter) pr_filter_head;
 231         struct protosw_old *pr_old;
 232 };
 233 #endif /* XNU_KERNEL_PRIVATE */
 234
 235 /*
 236  * Values for pr_flags.
 237  * PR_ADDR requires PR_ATOMIC;
 238  * PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
 239  * PR_IMPLOPCL means that the protocol allows sendto without prior connect,
 240  *      and the protocol understands the MSG_EOF flag.  The first property is
 241  *      is only relevant if PR_CONNREQUIRED is set (otherwise sendto is allowed
 242  *      anyhow).
 243  */
 244 #define PR_ATOMIC       0x01    /* exchange atomic messages only */
 245 #define PR_ADDR         0x02    /* addresses given with messages */
 246 #define PR_CONNREQUIRED 0x04    /* connection required by protocol */
 247 #define PR_WANTRCVD     0x08    /* want PRU_RCVD calls */
 248 #define PR_RIGHTS       0x10    /* passes capabilities */
 249 #define PR_IMPLOPCL     0x20    /* implied open/close */
 250 #define PR_LASTHDR      0x40    /* enforce ipsec policy; last header */
 251 #define PR_PROTOLOCK    0x80    /* protocol takes care of it's own locking */
 252 #define PR_PCBLOCK      0x100   /* protocol supports per pcb locking */
 253 #define PR_DISPOSE      0x200   /* protocol requires late lists disposal */
 254 #ifdef BSD_KERNEL_PRIVATE
 255 #define PR_INITIALIZED  0x400   /* protocol has been initialized */
 256 #define PR_ATTACHED     0x800   /* protocol is attached to a domain */
 257 #define PR_MULTICONN    0x1000  /* supports multiple connect calls */
 258 #define PR_EVCONNINFO   0x2000  /* protocol generates conninfo event */
 259 #define PR_OLD          0x10000000 /* added via net_add_proto */
 260
 261 /* pseudo-public domain flags */
 262 #define PRF_USERFLAGS                                                   \
 263         (PR_ATOMIC|PR_ADDR|PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS|       \
 264         PR_IMPLOPCL|PR_LASTHDR|PR_PROTOLOCK|PR_PCBLOCK|PR_DISPOSE)
 265 #endif /* BSD_KERNEL_PRIVATE */
 266
 267 #ifdef BSD_KERNEL_PRIVATE
 268 /*
 269  * The arguments to the ctlinput routine are
 270  *      (*protosw[].pr_ctlinput)(cmd, sa, arg);
 271  * where cmd is one of the commands below, sa is a pointer to a sockaddr,
 272  * and arg is a `void *' argument used within a protocol family.
 273  */
 274 #define PRC_IFDOWN              0       /* interface transition */
 275 #define PRC_ROUTEDEAD           1       /* select new route if possible ??? */
 276 #define PRC_IFUP                2       /* interface has come back up */
 277 #define PRC_QUENCH2             3       /* DEC congestion bit says slow down */
 278 #define PRC_QUENCH              4       /* some one said to slow down */
 279 #define PRC_MSGSIZE             5       /* message size forced drop */
 280 #define PRC_HOSTDEAD            6       /* host appears to be down */
 281 #define PRC_HOSTUNREACH         7       /* deprecated (use PRC_UNREACH_HOST) */
 282 #define PRC_UNREACH_NET         8       /* no route to network */
 283 #define PRC_UNREACH_HOST        9       /* no route to host */
 284 #define PRC_UNREACH_PROTOCOL    10      /* dst says bad protocol */
 285 #define PRC_UNREACH_PORT        11      /* bad port # */
 286 /* was  PRC_UNREACH_NEEDFRAG    12         (use PRC_MSGSIZE) */
 287 #define PRC_UNREACH_SRCFAIL     13      /* source route failed */
 288 #define PRC_REDIRECT_NET        14      /* net routing redirect */
 289 #define PRC_REDIRECT_HOST       15      /* host routing redirect */
 290 #define PRC_REDIRECT_TOSNET     16      /* redirect for type of service & net */
 291 #define PRC_REDIRECT_TOSHOST    17      /* redirect for tos & host */
 292 #define PRC_TIMXCEED_INTRANS    18      /* packet lifetime expired in transit */
 293 #define PRC_TIMXCEED_REASS      19      /* lifetime expired on reass q */
 294 #define PRC_PARAMPROB           20      /* header incorrect */
 295 #define PRC_UNREACH_ADMIN_PROHIB 21     /* packet administrativly prohibited */
 296
 297 #define PRC_NCMDS               22
 298
 299 #define PRC_IS_REDIRECT(cmd)    \
 300         ((cmd) >= PRC_REDIRECT_NET && (cmd) <= PRC_REDIRECT_TOSHOST)
 301
 302 #ifdef PRCREQUESTS
 303 char    *prcrequests[] = {
 304         "IFDOWN", "ROUTEDEAD", "IFUP", "DEC-BIT-QUENCH2",
 305         "QUENCH", "MSGSIZE", "HOSTDEAD", "#7",
 306         "NET-UNREACH", "HOST-UNREACH", "PROTO-UNREACH", "PORT-UNREACH",
 307         "#12", "SRCFAIL-UNREACH", "NET-REDIRECT", "HOST-REDIRECT",
 308         "TOSNET-REDIRECT", "TOSHOST-REDIRECT", "TX-INTRANS", "TX-REASS",
 309         "PARAMPROB", "ADMIN-UNREACH"
 310 };
 311 #endif /* PRCREQUESTS */
 312
 313 /*
 314  * The arguments to ctloutput are:
 315  *      (*protosw[].pr_ctloutput)(req, so, level, optname, optval, p);
 316  * req is one of the actions listed below, so is a (struct socket *),
 317  * level is an indication of which protocol layer the option is intended.
 318  * optname is a protocol dependent socket option request,
 319  * optval is a pointer to a mbuf-chain pointer, for value-return results.
 320  * The protocol is responsible for disposal of the mbuf chain *optval
 321  * if supplied,
 322  * the caller is responsible for any space held by *optval, when returned.
 323  * A non-zero return from usrreq gives an
 324  * UNIX error number which should be passed to higher level software.
 325  */
 326 #define PRCO_GETOPT     0
 327 #define PRCO_SETOPT     1
 328
 329 #define PRCO_NCMDS      2
 330
 331 #ifdef PRCOREQUESTS
 332 char    *prcorequests[] = {
 333         "GETOPT", "SETOPT",
 334 };
 335 #endif /* PRCOREQUESTS */
 336
 337 /*
 338  * In earlier BSD network stacks, a single pr_usrreq() function pointer was
 339  * invoked with an operation number indicating what operation was desired.
 340  * We now provide individual function pointers which protocols can implement,
 341  * which offers a number of benefits (such as type checking for arguments).
 342  * These older constants are still present in order to support TCP debugging.
 343  */
 344 #define PRU_ATTACH              0       /* attach protocol to up */
 345 #define PRU_DETACH              1       /* detach protocol from up */
 346 #define PRU_BIND                2       /* bind socket to address */
 347 #define PRU_LISTEN              3       /* listen for connection */
 348 #define PRU_CONNECT             4       /* establish connection to peer */
 349 #define PRU_ACCEPT              5       /* accept connection from peer */
 350 #define PRU_DISCONNECT          6       /* disconnect from peer */
 351 #define PRU_SHUTDOWN            7       /* won't send any more data */
 352 #define PRU_RCVD                8       /* have taken data; more room now */
 353 #define PRU_SEND                9       /* send this data */
 354 #define PRU_ABORT               10      /* abort (fast DISCONNECT, DETATCH) */
 355 #define PRU_CONTROL             11      /* control operations on protocol */
 356 #define PRU_SENSE               12      /* return status into m */
 357 #define PRU_RCVOOB              13      /* retrieve out of band data */
 358 #define PRU_SENDOOB             14      /* send out of band data */
 359 #define PRU_SOCKADDR            15      /* fetch socket's address */
 360 #define PRU_PEERADDR            16      /* fetch peer's address */
 361 #define PRU_CONNECT2            17      /* connect two sockets */
 362 /* begin for protocols internal use */
 363 #define PRU_FASTTIMO            18      /* 200ms timeout */
 364 #define PRU_SLOWTIMO            19      /* 500ms timeout */
 365 #define PRU_PROTORCV            20      /* receive from below */
 366 #define PRU_PROTOSEND           21      /* send to below */
 367 /* end for protocol's internal use */
 368 #define PRU_SEND_EOF            22      /* send and close */
 369 #define PRU_NREQ                22
 370
 371 #ifdef PRUREQUESTS
 372 char *prurequests[] = {
 373         "ATTACH",       "DETACH",       "BIND",         "LISTEN",
 374         "CONNECT",      "ACCEPT",       "DISCONNECT",   "SHUTDOWN",
 375         "RCVD",         "SEND",         "ABORT",        "CONTROL",
 376         "SENSE",        "RCVOOB",       "SENDOOB",      "SOCKADDR",
 377         "PEERADDR",     "CONNECT2",     "FASTTIMO",     "SLOWTIMO",
 378         "PROTORCV",     "PROTOSEND",    "SEND_EOF",
 379 };
 380 #endif /* PRUREQUESTS */
 381 #endif /* BSD_KERNEL_PRIVATE */
 382
 383 struct ifnet;
 384 struct stat;
 385 struct ucred;
 386 struct uio;
 387
 388 #ifdef XNU_KERNEL_PRIVATE
 389 /*
 390  * Legacy user-protocol hooks.
 391  *
 392  * NOTE: Do not modify this structure, as there are modules outside of xnu
 393  * which rely on the size and layout for binary compatibility.  This structure
 394  * is simply used by the protosw_old structure.  Internally, user-protocol
 395  * hooks use the private variant of pr_usrreqs defined down below.
 396  */
 397 struct pr_usrreqs_old {
 398 #else
 399 struct pr_usrreqs {
 400 #endif /* !XNU_KERNEL_PRIVATE */
 401         int     (*pru_abort)(struct socket *so);
 402         int     (*pru_accept)(struct socket *so, struct sockaddr **nam);
 403         int     (*pru_attach)(struct socket *so, int proto, struct proc *p);
 404         int     (*pru_bind)(struct socket *so, struct sockaddr *nam,
 405                     struct proc *p);
 406         int     (*pru_connect)(struct socket *so, struct sockaddr *nam,
 407                     struct proc *p);
 408         int     (*pru_connect2)(struct socket *so1, struct socket *so2);
 409         int     (*pru_control)(struct socket *so, u_long cmd, caddr_t data,
 410                     struct ifnet *ifp, struct proc *p);
 411         int     (*pru_detach)(struct socket *so);
 412         int     (*pru_disconnect)(struct socket *so);
 413         int     (*pru_listen)(struct socket *so, struct proc *p);
 414         int     (*pru_peeraddr)(struct socket *so, struct sockaddr **nam);
 415         int     (*pru_rcvd)(struct socket *so, int flags);
 416         int     (*pru_rcvoob)(struct socket *so, struct mbuf *m, int flags);
 417         int     (*pru_send)(struct socket *so, int flags, struct mbuf *m,
 418                     struct sockaddr *addr, struct mbuf *control,
 419                     struct proc *p);
 420         int     (*pru_sense)(struct socket *so, void  *sb, int isstat64);
 421         int     (*pru_shutdown)(struct socket *so);
 422         int     (*pru_sockaddr)(struct socket *so, struct sockaddr **nam);
 423         int     (*pru_sosend)(struct socket *so, struct sockaddr *addr,
 424                     struct uio *uio, struct mbuf *top, struct mbuf *control,
 425                     int flags);
 426         int     (*pru_soreceive)(struct socket *so, struct sockaddr **paddr,
 427                     struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
 428                     int *flagsp);
 429         int     (*pru_sopoll)(struct socket *so, int events,
 430                     struct ucred *cred, void *);
 431 };
 432
 433 #ifdef XNU_KERNEL_PRIVATE
 434 /*
 435  * If the ordering here looks odd, that's because it's alphabetical.  These
 436  * should eventually be merged back into struct protosw.
 437  *
 438  * Internal, private and extendable representation of pr_usrreqs.
 439  *
 440  * NOTE: When adding new ones, also add default callbacks in pru_sanitize().
 441  */
 442 struct pr_usrreqs {
 443         uint32_t pru_flags;     /* see PRUF flags below */
 444         int     (*pru_abort)(struct socket *);
 445         int     (*pru_accept)(struct socket *, struct sockaddr **);
 446         int     (*pru_attach)(struct socket *, int proto, struct proc *);
 447         int     (*pru_bind)(struct socket *, struct sockaddr *, struct proc *);
 448         int     (*pru_connect)(struct socket *, struct sockaddr *,
 449                     struct proc *);
 450         int     (*pru_connect2)(struct socket *, struct socket *);
 451         int     (*pru_connectx)(struct socket *, struct sockaddr_list **,
 452                     struct sockaddr_list **, struct proc *, uint32_t,
 453                     associd_t, connid_t *, uint32_t, void *, uint32_t);
 454         int     (*pru_control)(struct socket *, u_long, caddr_t,
 455                     struct ifnet *, struct proc *);
 456         int     (*pru_detach)(struct socket *);
 457         int     (*pru_disconnect)(struct socket *);
 458         int     (*pru_disconnectx)(struct socket *, associd_t, connid_t);
 459         int     (*pru_listen)(struct socket *, struct proc *);
 460         int     (*pru_peeloff)(struct socket *, associd_t, struct socket **);
 461         int     (*pru_peeraddr)(struct socket *, struct sockaddr **);
 462         int     (*pru_rcvd)(struct socket *, int);
 463         int     (*pru_rcvoob)(struct socket *, struct mbuf *, int);
 464         int     (*pru_send)(struct socket *, int, struct mbuf *,
 465                     struct sockaddr *, struct mbuf *, struct proc *);
 466         int     (*pru_send_list)(struct socket *, int, struct mbuf *,
 467                     struct sockaddr *, struct mbuf *, struct proc *);
 468 #define PRUS_OOB        0x1
 469 #define PRUS_EOF        0x2
 470 #define PRUS_MORETOCOME 0x4
 471         int     (*pru_sense)(struct socket *, void *, int);
 472         int     (*pru_shutdown)(struct socket *);
 473         int     (*pru_sockaddr)(struct socket *, struct sockaddr **);
 474         int     (*pru_sopoll)(struct socket *, int, struct ucred *, void *);
 475         int     (*pru_soreceive)(struct socket *, struct sockaddr **,
 476                     struct uio *, struct mbuf **, struct mbuf **, int *);
 477         int     (*pru_soreceive_list)(struct socket *, struct sockaddr **,
 478                     struct uio **, u_int, struct mbuf **, struct mbuf **, int *);
 479         int     (*pru_sosend)(struct socket *, struct sockaddr *,
 480                     struct uio *, struct mbuf *, struct mbuf *, int);
 481         int     (*pru_sosend_list)(struct socket *, struct sockaddr *,
 482                     struct uio **, u_int, struct mbuf *, struct mbuf *, int);
 483         int     (*pru_socheckopt)(struct socket *, struct sockopt *);
 484 };
 485
 486 /* Values for pru_flags  */
 487 #define PRUF_OLD        0x10000000      /* added via net_add_proto */
 488
 489 #endif /* XNU_KERNEL_PRIVATE */
 490
 491 __BEGIN_DECLS
 492 extern int pru_abort_notsupp(struct socket *so);
 493 extern int pru_accept_notsupp(struct socket *so, struct sockaddr **nam);
 494 extern int pru_attach_notsupp(struct socket *so, int proto, struct proc *p);
 495 extern int pru_bind_notsupp(struct socket *so, struct sockaddr *nam,
 496     struct proc *p);
 497 extern int pru_connect_notsupp(struct socket *so, struct sockaddr *nam,
 498     struct proc *p);
 499 extern int pru_connect2_notsupp(struct socket *so1, struct socket *so2);
 500 #ifdef XNU_KERNEL_PRIVATE
 501 extern int pru_connectx_notsupp(struct socket *, struct sockaddr_list **,
 502     struct sockaddr_list **, struct proc *, uint32_t, associd_t, connid_t *,
 503     uint32_t, void *, uint32_t);
 504 extern int pru_disconnectx_notsupp(struct socket *, associd_t, connid_t);
 505 extern int pru_socheckopt_null(struct socket *, struct sockopt *);
 506 extern int pru_peeloff_notsupp(struct socket *, associd_t, struct socket **);
 507 #endif /* XNU_KERNEL_PRIVATE */
 508 extern int pru_control_notsupp(struct socket *so, u_long cmd, caddr_t data,
 509     struct ifnet *ifp, struct proc *p);
 510 extern int pru_detach_notsupp(struct socket *so);
 511 extern int pru_disconnect_notsupp(struct socket *so);
 512 extern int pru_listen_notsupp(struct socket *so, struct proc *p);
 513 extern int pru_peeraddr_notsupp(struct socket *so, struct sockaddr **nam);
 514 extern int pru_rcvd_notsupp(struct socket *so, int flags);
 515 extern int pru_rcvoob_notsupp(struct socket *so, struct mbuf *m, int flags);
 516 extern int pru_send_notsupp(struct socket *so, int flags, struct mbuf *m,
 517     struct sockaddr *addr, struct mbuf *control, struct proc *p);
 518 extern int pru_send_list_notsupp(struct socket *so, int flags, struct mbuf *m,
 519     struct sockaddr *addr, struct mbuf *control, struct proc *p);
 520 extern int pru_sense_null(struct socket *so, void * sb, int isstat64);
 521 extern int pru_shutdown_notsupp(struct socket *so);
 522 extern int pru_sockaddr_notsupp(struct socket *so, struct sockaddr **nam);
 523 extern int pru_sosend_notsupp(struct socket *so, struct sockaddr *addr,
 524     struct uio *uio,  struct mbuf *top, struct mbuf *control, int flags);
 525 extern int pru_sosend_list_notsupp(struct socket *so, struct sockaddr *addr,
 526     struct uio **uio, u_int, struct mbuf *top, struct mbuf *control, int flags);
 527 extern int pru_soreceive_notsupp(struct socket *so,
 528     struct sockaddr **paddr, struct uio *uio, struct mbuf **mp0,
 529     struct mbuf **controlp, int *flagsp);
 530 extern int pru_soreceive_list_notsupp(struct socket *so,
 531     struct sockaddr **paddr, struct uio **uio, u_int, struct mbuf **mp0,
 532     struct mbuf **controlp, int *flagsp);
 533 extern int pru_sopoll_notsupp(struct socket *so, int events,
 534     struct ucred *cred, void *);
 535 #ifdef XNU_KERNEL_PRIVATE
 536 extern void pru_sanitize(struct pr_usrreqs *);
 537 extern void domaininit(void);
 538 extern void domainfin(void);
 539 extern void pfctlinput(int, struct sockaddr *);
 540 extern void pfctlinput2(int, struct sockaddr *, void *);
 541 extern struct protosw *pffindproto_locked(int, int, int);
 542 extern struct protosw *pffindprotonotype(int, int);
 543 extern struct protosw *pffindtype(int, int);
 544 extern struct protosw_old *pffindproto_old(int, int, int);
 545 extern int net_add_proto(struct protosw *, struct domain *, int);
 546 extern void net_init_proto(struct protosw *, struct domain *);
 547 extern int net_del_proto(int, int, struct domain *);
 548 extern int net_add_proto_old(struct protosw_old *, struct domain_old *);
 549 extern int net_del_proto_old(int, int, struct domain_old *);
 550 extern void net_update_uptime(void);
 551 extern void net_update_uptime_secs(uint64_t secs);
 552 extern u_int64_t net_uptime(void);
 553 extern void net_uptime2timeval(struct timeval *);
 554 #else
 555 extern int net_add_proto(struct protosw *, struct domain *);
 556 extern int net_del_proto(int, int, struct domain *);
 557 #endif /* XNU_KERNEL_PRIVATE */
 558 extern struct protosw *pffindproto(int family, int protocol, int type);
 559 __END_DECLS
 560 #endif /* KERNEL_PRIVATE */
 561 #endif  /* !_SYS_PROTOSW_H_ */