bsd/sys/protosw.h

   1 /*
   2  * Copyright (c) 2000-2015 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 /*
  76  * The arguments to the ctlinput routine are
  77  *      (*protosw[].pr_ctlinput)(cmd, sa, arg);
  78  * where cmd is one of the commands below, sa is a pointer to a sockaddr,
  79  * and arg is a `void *' argument used within a protocol family.
  80  */
  81 #define PRC_IFDOWN              0       /* interface transition */
  82 #define PRC_ROUTEDEAD           1       /* select new route if possible ??? */
  83 #define PRC_IFUP                2       /* interface has come back up */
  84 #define PRC_QUENCH2             3       /* DEC congestion bit says slow down */
  85 #define PRC_QUENCH              4       /* some one said to slow down */
  86 #define PRC_MSGSIZE             5       /* message size forced drop */
  87 #define PRC_HOSTDEAD            6       /* host appears to be down */
  88 #define PRC_HOSTUNREACH         7       /* deprecated (use PRC_UNREACH_HOST) */
  89 #define PRC_UNREACH_NET         8       /* no route to network */
  90 #define PRC_UNREACH_HOST        9       /* no route to host */
  91 #define PRC_UNREACH_PROTOCOL    10      /* dst says bad protocol */
  92 #define PRC_UNREACH_PORT        11      /* bad port # */
  93 /* was PRC_UNREACH_NEEDFRAG     12         (use PRC_MSGSIZE) */
  94 #define PRC_UNREACH_SRCFAIL     13      /* source route failed */
  95 #define PRC_REDIRECT_NET        14      /* net routing redirect */
  96 #define PRC_REDIRECT_HOST       15      /* host routing redirect */
  97 #define PRC_REDIRECT_TOSNET     16      /* redirect for type of service & net */
  98 #define PRC_REDIRECT_TOSHOST    17      /* redirect for tos & host */
  99 #define PRC_TIMXCEED_INTRANS    18      /* packet lifetime expired in transit */
 100 #define PRC_TIMXCEED_REASS      19      /* lifetime expired on reass q */
 101 #define PRC_PARAMPROB           20      /* header incorrect */
 102 #define PRC_UNREACH_ADMIN_PROHIB        21     /* packet administrativly prohibited */
 103
 104 #define PRC_NCMDS               22
 105
 106 #define PRC_IS_REDIRECT(cmd)    \
 107         ((cmd) >= PRC_REDIRECT_NET && (cmd) <= PRC_REDIRECT_TOSHOST)
 108
 109 #ifdef BSD_KERNEL_PRIVATE
 110 #include <sys/eventhandler.h>
 111 #endif
 112
 113 #ifdef KERNEL_PRIVATE
 114 #include <sys/socket.h>
 115 #include <sys/socketvar.h>
 116 #include <sys/queue.h>
 117 #include <kern/locks.h>
 118
 119 /* Forward declare these structures referenced from prototypes below. */
 120 struct mbuf;
 121 struct proc;
 122 struct sockaddr;
 123 struct socket;
 124 struct sockopt;
 125 struct socket_filter;
 126 struct uio;
 127 struct ifnet;
 128 #ifdef XNU_KERNEL_PRIVATE
 129 struct domain_old;
 130 #endif /* XNU_KERNEL_PRIVATE */
 131
 132 #pragma pack(4)
 133
 134 #ifdef XNU_KERNEL_PRIVATE
 135 /*
 136  * Legacy protocol switch table.
 137  *
 138  * NOTE: Do not modify this structure, as there are modules outside of xnu
 139  * which rely on the size and layout for binary compatibility.  This structure
 140  * is simply used by the exported net_{add,del}_proto_old, pffindproto_old
 141  * routines, and by the domain_old structure.  Internally, protocol switch
 142  * tables are stored in the private variant of protosw defined down below.
 143  */
 144 struct protosw_old {
 145 #else
 146 struct protosw {
 147 #endif /* !XNU_KERNEL_PRIVATE */
 148         short   pr_type;                /* socket type used for */
 149         struct  domain *pr_domain;      /* domain protocol a member of */
 150         short   pr_protocol;            /* protocol number */
 151         unsigned int pr_flags;          /* see below */
 152         /*
 153          * protocol-protocol hooks
 154          */
 155         void    (*pr_input)             /* input to protocol (from below) */
 156                     (struct mbuf *, int len);
 157         int     (*pr_output)            /* output to protocol (from above) */
 158                     (struct mbuf *m, struct socket *so);
 159         void    (*pr_ctlinput)          /* control input (from below) */
 160                     (int, struct sockaddr *, void *, struct ifnet *);
 161         int     (*pr_ctloutput)         /* control output (from above) */
 162                     (struct socket *, struct sockopt *);
 163         /*
 164          * user-protocol hook
 165          */
 166         void    *pr_ousrreq;
 167         /*
 168          * utility hooks
 169          */
 170         void    (*pr_init)(void);       /* initialization hook */
 171         void    (*pr_unused)(void);     /* placeholder - fasttimo is removed */
 172         void    (*pr_unused2)(void);    /* placeholder - slowtimo is removed */
 173         void    (*pr_drain)(void);      /* flush any excess space possible */
 174         int     (*pr_sysctl)            /* sysctl for protocol */
 175                     (int *, u_int, void *, size_t *, void *, size_t);
 176 #ifdef XNU_KERNEL_PRIVATE
 177         struct  pr_usrreqs_old *pr_usrreqs; /* supersedes pr_usrreq() */
 178 #else
 179         struct  pr_usrreqs *pr_usrreqs; /* supersedes pr_usrreq() */
 180 #endif /* !XNU_KERNEL_PRIVATE */
 181         int     (*pr_lock)              /* lock function for protocol */
 182                     (struct socket *so, int refcnt, void *debug);
 183         int     (*pr_unlock)            /* unlock for protocol */
 184                     (struct socket *so, int refcnt, void *debug);
 185         lck_mtx_t *(*pr_getlock)        /* retrieve protocol lock */
 186                     (struct socket *so, int flags);
 187         /*
 188          * Implant hooks
 189          */
 190         TAILQ_HEAD(, socket_filter) pr_filter_head;
 191 #ifdef XNU_KERNEL_PRIVATE
 192         struct protosw_old *pr_next;    /* chain for domain */
 193 #else
 194         struct protosw *pr_next;        /* chain for domain */
 195 #endif /* !XNU_KERNEL_PRIVATE */
 196         u_int32_t       reserved[1];    /* padding for future use */
 197 };
 198
 199 #pragma pack()
 200
 201 #ifdef XNU_KERNEL_PRIVATE
 202 /*
 203  * Protocol switch table.
 204  *
 205  * Each protocol has a handle initializing one of these structures,
 206  * which is used for protocol-protocol and system-protocol communication.
 207  *
 208  * A protocol is called through the pr_init entry before any other.
 209  * The system will call the pr_drain entry if it is low on space and this
 210  * should throw away any non-critical data.
 211  *
 212  * Protocols pass data between themselves as chains of mbufs using
 213  * the pr_input and pr_output hooks.  Pr_input passes data up (towards
 214  * the users) and pr_output passes it down (towards the interfaces); control
 215  * information passes up and down on pr_ctlinput and pr_ctloutput.
 216  * The protocol is responsible for the space occupied by any the
 217  * arguments to these entries and must dispose it.
 218  *
 219  * The userreq routine interfaces protocols to the system and is
 220  * described below.
 221  *
 222  * After a protocol is attached, its pr_domain will be set to the domain
 223  * which the protocol belongs to, and its pr_protosw will be set to the
 224  * address of the protosw instance.  The latter is useful for finding
 225  * the real/original protosw instance, in the event so_proto is altered
 226  * to point to an alternative/derivative protosw.  E.g. the list of
 227  * socket filters is only applicable on the original protosw instance.
 228  *
 229  * Internal, private and extendable representation of protosw.
 230  */
 231 struct protosw {
 232         TAILQ_ENTRY(protosw) pr_entry; /* chain for domain */
 233         struct  domain *pr_domain;      /* domain protocol a member of */
 234         struct protosw *pr_protosw;     /* pointer to self */
 235         u_int16_t pr_type;              /* socket type used for */
 236         u_int16_t pr_protocol;          /* protocol number */
 237         u_int32_t pr_flags;             /* see below */
 238         /*
 239          * protocol-protocol hooks
 240          */
 241         void    (*pr_input)             /* input to protocol (from below) */
 242                     (struct mbuf *, int len);
 243         int     (*pr_output)            /* output to protocol (from above) */
 244                     (struct mbuf *m, struct socket *so);
 245         void    (*pr_ctlinput)          /* control input (from below) */
 246                     (int, struct sockaddr *, void *, struct ifnet *);
 247         int     (*pr_ctloutput)         /* control output (from above) */
 248                     (struct socket *, struct sockopt *);
 249         /*
 250          * user-protocol hook
 251          */
 252         struct  pr_usrreqs *pr_usrreqs; /* user request; see list below */
 253         /*
 254          * utility hooks
 255          */
 256         void    (*pr_init)              /* initialization hook */
 257                     (struct protosw *, struct domain *);
 258         void    (*pr_drain)(void);      /* flush any excess space possible */
 259         int     (*pr_sysctl)            /* sysctl for protocol */
 260                     (int *, u_int, void *, size_t *, void *, size_t);
 261         int     (*pr_lock)              /* lock function for protocol */
 262                     (struct socket *so, int refcnt, void *debug);
 263         int     (*pr_unlock)            /* unlock for protocol */
 264                     (struct socket *so, int refcnt, void *debug);
 265         lck_mtx_t *(*pr_getlock)        /* retrieve protocol lock */
 266                     (struct socket *so, int flags);
 267         /*
 268          * misc
 269          */
 270         TAILQ_HEAD(, socket_filter) pr_filter_head;
 271         struct protosw_old *pr_old;
 272 };
 273
 274 /*
 275  * Values for the flags argument of pr_getlock
 276  */
 277 #define PR_F_WILLUNLOCK 0x01    /* Will unlock (e.g., msleep) after the pr_getlock call */
 278
 279 #endif /* XNU_KERNEL_PRIVATE */
 280
 281 /*
 282  * Values for pr_flags.
 283  * PR_ADDR requires PR_ATOMIC;
 284  * PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
 285  * PR_IMPLOPCL means that the protocol allows sendto without prior connect,
 286  *      and the protocol understands the MSG_EOF flag.  The first property is
 287  *      is only relevant if PR_CONNREQUIRED is set (otherwise sendto is allowed
 288  *      anyhow).
 289  */
 290 #define PR_ATOMIC       0x01    /* exchange atomic messages only */
 291 #define PR_ADDR         0x02    /* addresses given with messages */
 292 #define PR_CONNREQUIRED 0x04    /* connection required by protocol */
 293 #define PR_WANTRCVD     0x08    /* want PRU_RCVD calls */
 294 #define PR_RIGHTS       0x10    /* passes capabilities */
 295 #define PR_IMPLOPCL     0x20    /* implied open/close */
 296 #define PR_LASTHDR      0x40    /* enforce ipsec policy; last header */
 297 #define PR_PROTOLOCK    0x80    /* protocol takes care of it's own locking */
 298 #define PR_PCBLOCK      0x100   /* protocol supports per pcb locking */
 299 #define PR_DISPOSE      0x200   /* protocol requires late lists disposal */
 300 #ifdef BSD_KERNEL_PRIVATE
 301 #define PR_INITIALIZED  0x400   /* protocol has been initialized */
 302 #define PR_ATTACHED     0x800   /* protocol is attached to a domain */
 303 #define PR_MULTICONN    0x1000  /* supports multiple connect calls */
 304 #define PR_EVCONNINFO   0x2000  /* protocol generates conninfo event */
 305 #define PR_PRECONN_WRITE        0x4000  /* protocol supports preconnect write */
 306 #define PR_DATA_IDEMPOTENT      0x8000  /* protocol supports idempotent data at connectx-time */
 307 #define PR_OLD          0x10000000 /* added via net_add_proto */
 308
 309 /* pseudo-public domain flags */
 310 #define PRF_USERFLAGS                                                   \
 311         (PR_ATOMIC|PR_ADDR|PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS|       \
 312         PR_IMPLOPCL|PR_LASTHDR|PR_PROTOLOCK|PR_PCBLOCK|PR_DISPOSE)
 313 #endif /* BSD_KERNEL_PRIVATE */
 314
 315 #ifdef BSD_KERNEL_PRIVATE
 316 #ifdef PRCREQUESTS
 317 char    *prcrequests[] = {
 318         "IFDOWN", "ROUTEDEAD", "IFUP", "DEC-BIT-QUENCH2",
 319         "QUENCH", "MSGSIZE", "HOSTDEAD", "#7",
 320         "NET-UNREACH", "HOST-UNREACH", "PROTO-UNREACH", "PORT-UNREACH",
 321         "#12", "SRCFAIL-UNREACH", "NET-REDIRECT", "HOST-REDIRECT",
 322         "TOSNET-REDIRECT", "TOSHOST-REDIRECT", "TX-INTRANS", "TX-REASS",
 323         "PARAMPROB", "ADMIN-UNREACH"
 324 };
 325 #endif /* PRCREQUESTS */
 326
 327 /*
 328  * The arguments to ctloutput are:
 329  *      (*protosw[].pr_ctloutput)(req, so, level, optname, optval, p);
 330  * req is one of the actions listed below, so is a (struct socket *),
 331  * level is an indication of which protocol layer the option is intended.
 332  * optname is a protocol dependent socket option request,
 333  * optval is a pointer to a mbuf-chain pointer, for value-return results.
 334  * The protocol is responsible for disposal of the mbuf chain *optval
 335  * if supplied,
 336  * the caller is responsible for any space held by *optval, when returned.
 337  * A non-zero return from usrreq gives an
 338  * UNIX error number which should be passed to higher level software.
 339  */
 340 #define PRCO_GETOPT     0
 341 #define PRCO_SETOPT     1
 342
 343 #define PRCO_NCMDS      2
 344
 345 #ifdef PRCOREQUESTS
 346 char    *prcorequests[] = {
 347         "GETOPT", "SETOPT",
 348 };
 349 #endif /* PRCOREQUESTS */
 350
 351 /*
 352  * In earlier BSD network stacks, a single pr_usrreq() function pointer was
 353  * invoked with an operation number indicating what operation was desired.
 354  * We now provide individual function pointers which protocols can implement,
 355  * which offers a number of benefits (such as type checking for arguments).
 356  * These older constants are still present in order to support TCP debugging.
 357  */
 358 #define PRU_ATTACH              0       /* attach protocol to up */
 359 #define PRU_DETACH              1       /* detach protocol from up */
 360 #define PRU_BIND                2       /* bind socket to address */
 361 #define PRU_LISTEN              3       /* listen for connection */
 362 #define PRU_CONNECT             4       /* establish connection to peer */
 363 #define PRU_ACCEPT              5       /* accept connection from peer */
 364 #define PRU_DISCONNECT          6       /* disconnect from peer */
 365 #define PRU_SHUTDOWN            7       /* won't send any more data */
 366 #define PRU_RCVD                8       /* have taken data; more room now */
 367 #define PRU_SEND                9       /* send this data */
 368 #define PRU_ABORT               10      /* abort (fast DISCONNECT, DETATCH) */
 369 #define PRU_CONTROL             11      /* control operations on protocol */
 370 #define PRU_SENSE               12      /* return status into m */
 371 #define PRU_RCVOOB              13      /* retrieve out of band data */
 372 #define PRU_SENDOOB             14      /* send out of band data */
 373 #define PRU_SOCKADDR            15      /* fetch socket's address */
 374 #define PRU_PEERADDR            16      /* fetch peer's address */
 375 #define PRU_CONNECT2            17      /* connect two sockets */
 376 /* begin for protocols internal use */
 377 #define PRU_FASTTIMO            18      /* 200ms timeout */
 378 #define PRU_SLOWTIMO            19      /* 500ms timeout */
 379 #define PRU_PROTORCV            20      /* receive from below */
 380 #define PRU_PROTOSEND           21      /* send to below */
 381 /* end for protocol's internal use */
 382 #define PRU_SEND_EOF            22      /* send and close */
 383 #define PRU_NREQ                22
 384
 385 #ifdef PRUREQUESTS
 386 char *prurequests[] = {
 387         "ATTACH",       "DETACH",       "BIND",         "LISTEN",
 388         "CONNECT",      "ACCEPT",       "DISCONNECT",   "SHUTDOWN",
 389         "RCVD",         "SEND",         "ABORT",        "CONTROL",
 390         "SENSE",        "RCVOOB",       "SENDOOB",      "SOCKADDR",
 391         "PEERADDR",     "CONNECT2",     "FASTTIMO",     "SLOWTIMO",
 392         "PROTORCV",     "PROTOSEND",    "SEND_EOF",
 393 };
 394 #endif /* PRUREQUESTS */
 395 #endif /* BSD_KERNEL_PRIVATE */
 396
 397 struct stat;
 398 struct ucred;
 399 struct uio;
 400 struct recv_msg_elem;
 401
 402 #ifdef XNU_KERNEL_PRIVATE
 403 /*
 404  * Legacy user-protocol hooks.
 405  *
 406  * NOTE: Do not modify this structure, as there are modules outside of xnu
 407  * which rely on the size and layout for binary compatibility.  This structure
 408  * is simply used by the protosw_old structure.  Internally, user-protocol
 409  * hooks use the private variant of pr_usrreqs defined down below.
 410  */
 411 struct pr_usrreqs_old {
 412 #else
 413 struct pr_usrreqs {
 414 #endif /* !XNU_KERNEL_PRIVATE */
 415         int     (*pru_abort)(struct socket *so);
 416         int     (*pru_accept)(struct socket *so, struct sockaddr **nam);
 417         int     (*pru_attach)(struct socket *so, int proto, struct proc *p);
 418         int     (*pru_bind)(struct socket *so, struct sockaddr *nam,
 419                     struct proc *p);
 420         int     (*pru_connect)(struct socket *so, struct sockaddr *nam,
 421                     struct proc *p);
 422         int     (*pru_connect2)(struct socket *so1, struct socket *so2);
 423         int     (*pru_control)(struct socket *so, u_long cmd, caddr_t data,
 424                     struct ifnet *ifp, struct proc *p);
 425         int     (*pru_detach)(struct socket *so);
 426         int     (*pru_disconnect)(struct socket *so);
 427         int     (*pru_listen)(struct socket *so, struct proc *p);
 428         int     (*pru_peeraddr)(struct socket *so, struct sockaddr **nam);
 429         int     (*pru_rcvd)(struct socket *so, int flags);
 430         int     (*pru_rcvoob)(struct socket *so, struct mbuf *m, int flags);
 431         int     (*pru_send)(struct socket *so, int flags, struct mbuf *m,
 432                     struct sockaddr *addr, struct mbuf *control,
 433                     struct proc *p);
 434         int     (*pru_sense)(struct socket *so, void  *sb, int isstat64);
 435         int     (*pru_shutdown)(struct socket *so);
 436         int     (*pru_sockaddr)(struct socket *so, struct sockaddr **nam);
 437         int     (*pru_sosend)(struct socket *so, struct sockaddr *addr,
 438                     struct uio *uio, struct mbuf *top, struct mbuf *control,
 439                     int flags);
 440         int     (*pru_soreceive)(struct socket *so, struct sockaddr **paddr,
 441                     struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
 442                     int *flagsp);
 443         int     (*pru_sopoll)(struct socket *so, int events,
 444                     struct ucred *cred, void *);
 445 };
 446
 447 #ifdef XNU_KERNEL_PRIVATE
 448 /*
 449  * If the ordering here looks odd, that's because it's alphabetical.  These
 450  * should eventually be merged back into struct protosw.
 451  *
 452  * Internal, private and extendable representation of pr_usrreqs.
 453  *
 454  * NOTE: When adding new ones, also add default callbacks in pru_sanitize().
 455  */
 456 struct pr_usrreqs {
 457         uint32_t pru_flags;     /* see PRUF flags below */
 458         int     (*pru_abort)(struct socket *);
 459         int     (*pru_accept)(struct socket *, struct sockaddr **);
 460         int     (*pru_attach)(struct socket *, int proto, struct proc *);
 461         int     (*pru_bind)(struct socket *, struct sockaddr *, struct proc *);
 462         int     (*pru_connect)(struct socket *, struct sockaddr *,
 463                     struct proc *);
 464         int     (*pru_connect2)(struct socket *, struct socket *);
 465         int     (*pru_connectx)(struct socket *, struct sockaddr *,
 466                     struct sockaddr *, struct proc *, uint32_t,
 467                     sae_associd_t, sae_connid_t *, uint32_t, void *, uint32_t,
 468                     struct uio *, user_ssize_t *);
 469         int     (*pru_control)(struct socket *, u_long, caddr_t,
 470                     struct ifnet *, struct proc *);
 471         int     (*pru_detach)(struct socket *);
 472         int     (*pru_disconnect)(struct socket *);
 473         int     (*pru_disconnectx)(struct socket *,
 474                     sae_associd_t, sae_connid_t);
 475         int     (*pru_listen)(struct socket *, struct proc *);
 476         int     (*pru_peeraddr)(struct socket *, struct sockaddr **);
 477         int     (*pru_rcvd)(struct socket *, int);
 478         int     (*pru_rcvoob)(struct socket *, struct mbuf *, int);
 479         int     (*pru_send)(struct socket *, int, struct mbuf *,
 480                     struct sockaddr *, struct mbuf *, struct proc *);
 481         int     (*pru_send_list)(struct socket *, int, struct mbuf *,
 482                     struct sockaddr *, struct mbuf *, struct proc *);
 483 #define PRUS_OOB        0x1
 484 #define PRUS_EOF        0x2
 485 #define PRUS_MORETOCOME 0x4
 486         int     (*pru_sense)(struct socket *, void *, int);
 487         int     (*pru_shutdown)(struct socket *);
 488         int     (*pru_sockaddr)(struct socket *, struct sockaddr **);
 489         int     (*pru_sopoll)(struct socket *, int, struct ucred *, void *);
 490         int     (*pru_soreceive)(struct socket *, struct sockaddr **,
 491                     struct uio *, struct mbuf **, struct mbuf **, int *);
 492         int     (*pru_soreceive_list)(struct socket *, struct recv_msg_elem *, u_int,
 493                     int *);
 494         int     (*pru_sosend)(struct socket *, struct sockaddr *,
 495                     struct uio *, struct mbuf *, struct mbuf *, int);
 496         int     (*pru_sosend_list)(struct socket *, struct uio **, u_int, int);
 497         int     (*pru_socheckopt)(struct socket *, struct sockopt *);
 498         int     (*pru_preconnect)(struct socket *so);
 499 };
 500
 501 /* Values for pru_flags  */
 502 #define PRUF_OLD        0x10000000      /* added via net_add_proto */
 503
 504 #ifdef BSD_KERNEL_PRIVATE
 505 /*
 506  * For faster access than net_uptime(), bypassing the initialization.
 507  */
 508 extern u_int64_t _net_uptime;
 509 #endif /* BSD_KERNEL_PRIVATE */
 510 #endif /* XNU_KERNEL_PRIVATE */
 511
 512 __BEGIN_DECLS
 513 extern int pru_abort_notsupp(struct socket *so);
 514 extern int pru_accept_notsupp(struct socket *so, struct sockaddr **nam);
 515 extern int pru_attach_notsupp(struct socket *so, int proto, struct proc *p);
 516 extern int pru_bind_notsupp(struct socket *so, struct sockaddr *nam,
 517     struct proc *p);
 518 extern int pru_connect_notsupp(struct socket *so, struct sockaddr *nam,
 519     struct proc *p);
 520 extern int pru_connect2_notsupp(struct socket *so1, struct socket *so2);
 521 #ifdef XNU_KERNEL_PRIVATE
 522 extern int pru_connectx_notsupp(struct socket *, struct sockaddr *,
 523     struct sockaddr *, struct proc *, uint32_t, sae_associd_t,
 524     sae_connid_t *, uint32_t, void *, uint32_t, struct uio *, user_ssize_t *);
 525 extern int pru_disconnectx_notsupp(struct socket *, sae_associd_t,
 526     sae_connid_t);
 527 extern int pru_socheckopt_null(struct socket *, struct sockopt *);
 528 #endif /* XNU_KERNEL_PRIVATE */
 529 extern int pru_control_notsupp(struct socket *so, u_long cmd, caddr_t data,
 530     struct ifnet *ifp, struct proc *p);
 531 extern int pru_detach_notsupp(struct socket *so);
 532 extern int pru_disconnect_notsupp(struct socket *so);
 533 extern int pru_listen_notsupp(struct socket *so, struct proc *p);
 534 extern int pru_peeraddr_notsupp(struct socket *so, struct sockaddr **nam);
 535 extern int pru_rcvd_notsupp(struct socket *so, int flags);
 536 extern int pru_rcvoob_notsupp(struct socket *so, struct mbuf *m, int flags);
 537 extern int pru_send_notsupp(struct socket *so, int flags, struct mbuf *m,
 538     struct sockaddr *addr, struct mbuf *control, struct proc *p);
 539 extern int pru_send_list_notsupp(struct socket *so, int flags, struct mbuf *m,
 540     struct sockaddr *addr, struct mbuf *control, struct proc *p);
 541 extern int pru_sense_null(struct socket *so, void * sb, int isstat64);
 542 extern int pru_shutdown_notsupp(struct socket *so);
 543 extern int pru_sockaddr_notsupp(struct socket *so, struct sockaddr **nam);
 544 extern int pru_sosend_notsupp(struct socket *so, struct sockaddr *addr,
 545     struct uio *uio,  struct mbuf *top, struct mbuf *control, int flags);
 546 extern int pru_sosend_list_notsupp(struct socket *so, struct uio **uio,
 547     u_int, int flags);
 548 extern int pru_soreceive_notsupp(struct socket *so,
 549     struct sockaddr **paddr, struct uio *uio, struct mbuf **mp0,
 550     struct mbuf **controlp, int *flagsp);
 551 extern int pru_soreceive_list_notsupp(struct socket *, struct recv_msg_elem *, u_int,
 552     int *);
 553 extern int pru_sopoll_notsupp(struct socket *so, int events,
 554     struct ucred *cred, void *);
 555 #ifdef XNU_KERNEL_PRIVATE
 556 extern void pru_sanitize(struct pr_usrreqs *);
 557 extern void domaininit(void);
 558 extern void domainfin(void);
 559 extern void pfctlinput(int, struct sockaddr *);
 560 extern void pfctlinput2(int, struct sockaddr *, void *);
 561 extern struct protosw *pffindproto_locked(int, int, int);
 562 extern struct protosw *pffindprotonotype(int, int);
 563 extern struct protosw *pffindtype(int, int);
 564 extern struct protosw_old *pffindproto_old(int, int, int);
 565 extern int net_add_proto(struct protosw *, struct domain *, int);
 566 extern void net_init_proto(struct protosw *, struct domain *);
 567 extern int net_del_proto(int, int, struct domain *);
 568 extern int net_add_proto_old(struct protosw_old *, struct domain_old *);
 569 extern int net_del_proto_old(int, int, struct domain_old *);
 570 extern void net_update_uptime(void);
 571 extern void net_update_uptime_with_time(const struct timeval *);
 572 extern u_int64_t net_uptime(void);
 573 extern void net_uptime2timeval(struct timeval *);
 574 #else
 575 extern int net_add_proto(struct protosw *, struct domain *);
 576 extern int net_del_proto(int, int, struct domain *);
 577 #endif /* XNU_KERNEL_PRIVATE */
 578 extern struct protosw *pffindproto(int family, int protocol, int type);
 579 __END_DECLS
 580 #endif /* KERNEL_PRIVATE */
 581 #endif  /* !_SYS_PROTOSW_H_ */