sys/kern/uipc_msg.c

   1 /*
   2  * Copyright (c) 2003, 2004 Jeffrey M. Hsu.  All rights reserved.
   3  * Copyright (c) 2003, 2004 The DragonFly Project.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to The DragonFly Project
   6  * by Jeffrey M. Hsu.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of The DragonFly Project nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific, prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $DragonFly: src/sys/kern/uipc_msg.c,v 1.13 2004/07/08 22:07:34 hsu Exp $
  34  */
  35
  36 /*
  37  * Copyright (c) 2003, 2004 Jeffrey M. Hsu.  All rights reserved.
  38  *
  39  * License terms: all terms for the DragonFly license above plus the following:
  40  *
  41  * 4. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *
  44  *      This product includes software developed by Jeffrey M. Hsu
  45  *      for the DragonFly Project.
  46  *
  47  *    This requirement may be waived with permission from Jeffrey Hsu.
  48  *    This requirement will sunset and may be removed on July 8 2005,
  49  *    after which the standard DragonFly license (as shown above) will
  50  *    apply.
  51  */
  52
  53 #include <sys/param.h>
  54 #include <sys/systm.h>
  55 #include <sys/msgport.h>
  56 #include <sys/protosw.h>
  57 #include <sys/socket.h>
  58 #include <sys/socketvar.h>
  59 #include <sys/socketops.h>
  60 #include <sys/thread.h>
  61 #include <sys/thread2.h>
  62 #include <sys/msgport2.h>
  63
  64 #include <net/netisr.h>
  65 #include <net/netmsg.h>
  66
  67 int
  68 so_pru_abort(struct socket *so)
  69 {
  70         int error;
  71         struct netmsg_pru_abort msg;
  72         lwkt_port_t port;
  73
  74         port = so->so_proto->pr_mport(so, NULL, PRU_ABORT);
  75         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
  76                 lwkt_cmd_func(netmsg_pru_abort), lwkt_cmd_op_none);
  77         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_abort;
  78         msg.nm_so = so;
  79         error = lwkt_domsg(port, &msg.nm_lmsg);
  80         return (error);
  81 }
  82
  83 int
  84 so_pru_accept(struct socket *so, struct sockaddr **nam)
  85 {
  86         /* Block (memory allocation) in process context. XXX JH */
  87         return ((*so->so_proto->pr_usrreqs->pru_accept)(so, nam));
  88
  89 #ifdef notdef
  90         int error;
  91         struct netmsg_pru_accept msg;
  92         lwkt_port_t port;
  93
  94         port = so->so_proto->pr_mport(so, NULL, PRU_ACCEPT);
  95         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
  96                 lwkt_cmd_func(netmsg_pru_accept), lwkt_cmd_op_none);
  97         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_accept;
  98         msg.nm_so = so;
  99         msg.nm_nam = nam;
 100         error = lwkt_domsg(port, &msg.nm_lmsg);
 101         return (error);
 102 #endif
 103 }
 104
 105 int
 106 so_pru_attach(struct socket *so, int proto, struct pru_attach_info *ai)
 107 {
 108         int error;
 109         struct netmsg_pru_attach msg;
 110         lwkt_port_t port;
 111
 112         port = so->so_proto->pr_mport(NULL, NULL, PRU_ATTACH);
 113         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 114                 lwkt_cmd_func(netmsg_pru_attach), lwkt_cmd_op_none);
 115         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_attach;
 116         msg.nm_so = so;
 117         msg.nm_proto = proto;
 118         msg.nm_ai = ai;
 119         error = lwkt_domsg(port, &msg.nm_lmsg);
 120         return (error);
 121 }
 122
 123 int
 124 so_pru_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
 125 {
 126         int error;
 127         struct netmsg_pru_bind msg;
 128         lwkt_port_t port;
 129
 130         /* Send mesg to thread for new address. */
 131         port = so->so_proto->pr_mport(NULL, nam, PRU_BIND);
 132         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 133                 lwkt_cmd_func(netmsg_pru_bind), lwkt_cmd_op_none);
 134         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_bind;
 135         msg.nm_so = so;
 136         msg.nm_nam = nam;
 137         msg.nm_td = td;         /* used only for prison_ip() XXX JH */
 138         error = lwkt_domsg(port, &msg.nm_lmsg);
 139         return (error);
 140 }
 141
 142 int
 143 so_pru_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
 144 {
 145         int error;
 146         struct netmsg_pru_connect msg;
 147         lwkt_port_t port;
 148
 149         port = so->so_proto->pr_mport(so, nam, PRU_CONNECT);
 150         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 151                 lwkt_cmd_func(netmsg_pru_connect), lwkt_cmd_op_none);
 152         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_connect;
 153         msg.nm_so = so;
 154         msg.nm_nam = nam;
 155         msg.nm_td = td;
 156         error = lwkt_domsg(port, &msg.nm_lmsg);
 157         return (error);
 158 }
 159
 160 int
 161 so_pru_connect2(struct socket *so1, struct socket *so2)
 162 {
 163         int error;
 164         struct netmsg_pru_connect2 msg;
 165         lwkt_port_t port;
 166
 167         port = so1->so_proto->pr_mport(so1, NULL, PRU_CONNECT2);
 168         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 169                 lwkt_cmd_func(netmsg_pru_connect2), lwkt_cmd_op_none);
 170         msg.nm_prufn = so1->so_proto->pr_usrreqs->pru_connect2;
 171         msg.nm_so1 = so1;
 172         msg.nm_so2 = so2;
 173         error = lwkt_domsg(port, &msg.nm_lmsg);
 174         return (error);
 175 }
 176
 177 int
 178 so_pru_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
 179     struct thread *td)
 180 {
 181         return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, ifp,
 182             td));
 183 #ifdef gag      /* does copyin and copyout deep inside stack XXX JH */
 184         int error;
 185         struct netmsg_pru_control msg;
 186         lwkt_port_t port;
 187
 188         port = so->so_proto->pr_mport(so, NULL, PRU_CONTROL);
 189         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 190                 lwkt_cmd_func(netmsg_pru_control), lwkt_cmd_op_none);
 191         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_control;
 192         msg.nm_so = so;
 193         msg.nm_cmd = cmd;
 194         msg.nm_data = data;
 195         msg.nm_ifp = ifp;
 196         msg.nm_td = td;
 197         error = lwkt_domsg(port, &msg.nm_lmsg);
 198         return (error);
 199 #endif
 200 }
 201
 202 int
 203 so_pru_detach(struct socket *so)
 204 {
 205         int error;
 206         struct netmsg_pru_detach msg;
 207         lwkt_port_t port;
 208
 209         port = so->so_proto->pr_mport(so, NULL, PRU_DETACH);
 210         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 211                 lwkt_cmd_func(netmsg_pru_detach), lwkt_cmd_op_none);
 212         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_detach;
 213         msg.nm_so = so;
 214         error = lwkt_domsg(port, &msg.nm_lmsg);
 215         return (error);
 216 }
 217
 218 int
 219 so_pru_disconnect(struct socket *so)
 220 {
 221         int error;
 222         struct netmsg_pru_disconnect msg;
 223         lwkt_port_t port;
 224
 225         port = so->so_proto->pr_mport(so, NULL, PRU_DISCONNECT);
 226         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 227                 lwkt_cmd_func(netmsg_pru_disconnect), lwkt_cmd_op_none);
 228         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_disconnect;
 229         msg.nm_so = so;
 230         error = lwkt_domsg(port, &msg.nm_lmsg);
 231         return (error);
 232 }
 233
 234 int
 235 so_pru_listen(struct socket *so, struct thread *td)
 236 {
 237         int error;
 238         struct netmsg_pru_listen msg;
 239         lwkt_port_t port;
 240
 241         port = so->so_proto->pr_mport(so, NULL, PRU_LISTEN);
 242         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 243                 lwkt_cmd_func(netmsg_pru_listen), lwkt_cmd_op_none);
 244         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_listen;
 245         msg.nm_so = so;
 246         msg.nm_td = td;         /* used only for prison_ip() XXX JH */
 247         error = lwkt_domsg(port, &msg.nm_lmsg);
 248         return (error);
 249 }
 250
 251 int
 252 so_pru_peeraddr(struct socket *so, struct sockaddr **nam)
 253 {
 254         int error;
 255         struct netmsg_pru_peeraddr msg;
 256         lwkt_port_t port;
 257
 258         port = so->so_proto->pr_mport(so, NULL, PRU_PEERADDR);
 259         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 260                 lwkt_cmd_func(netmsg_pru_peeraddr), lwkt_cmd_op_none);
 261         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_peeraddr;
 262         msg.nm_so = so;
 263         msg.nm_nam = nam;
 264         error = lwkt_domsg(port, &msg.nm_lmsg);
 265         return (error);
 266 }
 267
 268 int
 269 so_pru_rcvd(struct socket *so, int flags)
 270 {
 271         int error;
 272         struct netmsg_pru_rcvd msg;
 273         lwkt_port_t port;
 274
 275         port = so->so_proto->pr_mport(so, NULL, PRU_RCVD);
 276         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 277                 lwkt_cmd_func(netmsg_pru_rcvd), lwkt_cmd_op_none);
 278         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_rcvd;
 279         msg.nm_so = so;
 280         msg.nm_flags = flags;
 281         error = lwkt_domsg(port, &msg.nm_lmsg);
 282         return (error);
 283 }
 284
 285 int
 286 so_pru_rcvoob(struct socket *so, struct mbuf *m, int flags)
 287 {
 288         int error;
 289         struct netmsg_pru_rcvoob msg;
 290         lwkt_port_t port;
 291
 292         port = so->so_proto->pr_mport(so, NULL, PRU_RCVOOB);
 293         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 294                 lwkt_cmd_func(netmsg_pru_rcvoob), lwkt_cmd_op_none);
 295         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_rcvoob;
 296         msg.nm_so = so;
 297         msg.nm_m = m;
 298         msg.nm_flags = flags;
 299         error = lwkt_domsg(port, &msg.nm_lmsg);
 300         return (error);
 301 }
 302
 303 int
 304 so_pru_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 305     struct mbuf *control, struct thread *td)
 306 {
 307         int error;
 308         struct netmsg_pru_send msg;
 309         lwkt_port_t port;
 310
 311         port = so->so_proto->pr_mport(so, NULL, PRU_SEND);
 312         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 313                 lwkt_cmd_func(netmsg_pru_send), lwkt_cmd_op_none);
 314         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_send;
 315         msg.nm_so = so;
 316         msg.nm_flags = flags;
 317         msg.nm_m = m;
 318         msg.nm_addr = addr;
 319         msg.nm_control = control;
 320         msg.nm_td = td;
 321         error = lwkt_domsg(port, &msg.nm_lmsg);
 322         return (error);
 323 }
 324
 325 int
 326 so_pru_sense(struct socket *so, struct stat *sb)
 327 {
 328         int error;
 329         struct netmsg_pru_sense msg;
 330         lwkt_port_t port;
 331
 332         port = so->so_proto->pr_mport(so, NULL, PRU_SENSE);
 333         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 334                 lwkt_cmd_func(netmsg_pru_sense), lwkt_cmd_op_none);
 335         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_sense;
 336         msg.nm_so = so;
 337         msg.nm_stat = sb;
 338         error = lwkt_domsg(port, &msg.nm_lmsg);
 339         return (error);
 340 }
 341
 342 int
 343 so_pru_shutdown(struct socket *so)
 344 {
 345         int error;
 346         struct netmsg_pru_shutdown msg;
 347         lwkt_port_t port;
 348
 349         port = so->so_proto->pr_mport(so, NULL, PRU_SHUTDOWN);
 350         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 351                 lwkt_cmd_func(netmsg_pru_shutdown), lwkt_cmd_op_none);
 352         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_shutdown;
 353         msg.nm_so = so;
 354         error = lwkt_domsg(port, &msg.nm_lmsg);
 355         return (error);
 356 }
 357
 358 int
 359 so_pru_sockaddr(struct socket *so, struct sockaddr **nam)
 360 {
 361         int error;
 362         struct netmsg_pru_sockaddr msg;
 363         lwkt_port_t port;
 364
 365         port = so->so_proto->pr_mport(so, NULL, PRU_SOCKADDR);
 366         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 367                 lwkt_cmd_func(netmsg_pru_sockaddr), lwkt_cmd_op_none);
 368         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_sockaddr;
 369         msg.nm_so = so;
 370         msg.nm_nam = nam;
 371         error = lwkt_domsg(port, &msg.nm_lmsg);
 372         return (error);
 373 }
 374
 375 int
 376 so_pru_sopoll(struct socket *so, int events, struct ucred *cred,
 377     struct thread *td)
 378 {
 379         int error;
 380         struct netmsg_pru_sopoll msg;
 381         lwkt_port_t port;
 382
 383         port = so->so_proto->pr_mport(so, NULL, PRU_SOPOLL);
 384         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 385                 lwkt_cmd_func(netmsg_pru_sopoll), lwkt_cmd_op_none);
 386         msg.nm_prufn = so->so_proto->pr_usrreqs->pru_sopoll;
 387         msg.nm_so = so;
 388         msg.nm_events = events;
 389         msg.nm_cred = cred;
 390         msg.nm_td = td;
 391         error = lwkt_domsg(port, &msg.nm_lmsg);
 392         return (error);
 393 }
 394
 395 int
 396 so_pr_ctloutput(struct socket *so, struct sockopt *sopt)
 397 {
 398         return ((*so->so_proto->pr_ctloutput)(so, sopt));
 399 #ifdef gag      /* does copyin and copyout deep inside stack XXX JH */
 400         struct netmsg_pr_ctloutput msg;
 401         lwkt_port_t port;
 402         int error;
 403
 404         port = so->so_proto->pr_mport(so, NULL);
 405         lwkt_initmsg(&msg.nm_lmsg, &curthread->td_msgport, 0,
 406                 lwkt_cmd_func(netmsg_pru_ctloutput), lwkt_cmd_op_none);
 407         msg.nm_prfn = so->so_proto->pr_ctloutput;
 408         msg.nm_so = so;
 409         msg.nm_sopt = sopt;
 410         error = lwkt_domsg(port, &msg.nm_lmsg);
 411         return (error);
 412 #endif
 413 }
 414
 415 /*
 416  * If we convert all the protosw pr_ functions for all the protocols
 417  * to take a message directly, this layer can go away.  For the moment
 418  * our dispatcher ignores the return value, but since we are handling
 419  * the replymsg ourselves we return EASYNC by convention.
 420  */
 421 int
 422 netmsg_pru_abort(lwkt_msg_t msg)
 423 {
 424         struct netmsg_pru_abort *nm = (void *)msg;
 425
 426         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so));
 427         return(EASYNC);
 428 }
 429
 430 #ifdef notused
 431 int
 432 netmsg_pru_accept(lwkt_msg_t msg)
 433 {
 434         struct netmsg_pru_accept *nm = (void *)msg;
 435
 436         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_nam));
 437         return(EASYNC);
 438 }
 439 #endif
 440
 441 int
 442 netmsg_pru_attach(lwkt_msg_t msg)
 443 {
 444         struct netmsg_pru_attach *nm = (void *)msg;
 445
 446         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_proto, nm->nm_ai));
 447         return(EASYNC);
 448 }
 449
 450 int
 451 netmsg_pru_bind(lwkt_msg_t msg)
 452 {
 453         struct netmsg_pru_bind *nm = (void *)msg;
 454
 455         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_nam, nm->nm_td));
 456         return(EASYNC);
 457 }
 458
 459 int
 460 netmsg_pru_connect(lwkt_msg_t msg)
 461 {
 462         struct netmsg_pru_connect *nm = (void *)msg;
 463
 464         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_nam, nm->nm_td));
 465         return(EASYNC);
 466 }
 467
 468 int
 469 netmsg_pru_connect2(lwkt_msg_t msg)
 470 {
 471         struct netmsg_pru_connect2 *nm = (void *)msg;
 472
 473         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so1, nm->nm_so2));
 474         return(EASYNC);
 475 }
 476
 477 int
 478 netmsg_pru_control(lwkt_msg_t msg)
 479 {
 480         struct netmsg_pru_control *nm = (void *)msg;
 481         int error;
 482
 483         error = nm->nm_prufn(nm->nm_so, nm->nm_cmd, nm->nm_data,
 484                                 nm->nm_ifp, nm->nm_td);
 485         lwkt_replymsg(msg, error);
 486         return(EASYNC);
 487 }
 488
 489 int
 490 netmsg_pru_detach(lwkt_msg_t msg)
 491 {
 492         struct netmsg_pru_detach *nm = (void *)msg;
 493
 494         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so));
 495         return(EASYNC);
 496 }
 497
 498 int
 499 netmsg_pru_disconnect(lwkt_msg_t msg)
 500 {
 501         struct netmsg_pru_disconnect *nm = (void *)msg;
 502
 503         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so));
 504         return(EASYNC);
 505 }
 506
 507 int
 508 netmsg_pru_listen(lwkt_msg_t msg)
 509 {
 510         struct netmsg_pru_listen *nm = (void *)msg;
 511
 512         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_td));
 513         return(EASYNC);
 514 }
 515
 516 int
 517 netmsg_pru_peeraddr(lwkt_msg_t msg)
 518 {
 519         struct netmsg_pru_peeraddr *nm = (void *)msg;
 520
 521         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_nam));
 522         return(EASYNC);
 523 }
 524
 525 int
 526 netmsg_pru_rcvd(lwkt_msg_t msg)
 527 {
 528         struct netmsg_pru_rcvd *nm = (void *)msg;
 529
 530         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_flags));
 531         return(EASYNC);
 532 }
 533
 534 int
 535 netmsg_pru_rcvoob(lwkt_msg_t msg)
 536 {
 537         struct netmsg_pru_rcvoob *nm = (void *)msg;
 538
 539         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_m, nm->nm_flags));
 540         return(EASYNC);
 541 }
 542
 543 int
 544 netmsg_pru_send(lwkt_msg_t msg)
 545 {
 546         struct netmsg_pru_send *nm = (void *)msg;
 547         int error;
 548
 549         error = nm->nm_prufn(nm->nm_so, nm->nm_flags, nm->nm_m,
 550                                 nm->nm_addr, nm->nm_control, nm->nm_td);
 551         lwkt_replymsg(msg, error);
 552         return(EASYNC);
 553 }
 554
 555 int
 556 netmsg_pru_sense(lwkt_msg_t msg)
 557 {
 558         struct netmsg_pru_sense *nm = (void *)msg;
 559
 560         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_stat));
 561         return(EASYNC);
 562 }
 563
 564 int
 565 netmsg_pru_shutdown(lwkt_msg_t msg)
 566 {
 567         struct netmsg_pru_shutdown *nm = (void *)msg;
 568
 569         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so));
 570         return(EASYNC);
 571 }
 572
 573 int
 574 netmsg_pru_sockaddr(lwkt_msg_t msg)
 575 {
 576         struct netmsg_pru_sockaddr *nm = (void *)msg;
 577
 578         lwkt_replymsg(msg, nm->nm_prufn(nm->nm_so, nm->nm_nam));
 579         return(EASYNC);
 580 }
 581
 582 int
 583 netmsg_pru_sopoll(lwkt_msg_t msg)
 584 {
 585         struct netmsg_pru_sopoll *nm = (void *)msg;
 586         int error;
 587
 588         error = nm->nm_prufn(nm->nm_so, nm->nm_events, nm->nm_cred, nm->nm_td);
 589         lwkt_replymsg(msg, error);
 590         return(EASYNC);
 591 }
 592
 593 int
 594 netmsg_pr_ctloutput(lwkt_msg_t msg)
 595 {
 596         struct netmsg_pr_ctloutput *nm = (void *)msg;
 597
 598         lwkt_replymsg(msg, nm->nm_prfn(nm->nm_so, nm->nm_sopt));
 599         return(EASYNC);
 600 }
 601
 602 int
 603 netmsg_pr_timeout(lwkt_msg_t msg)
 604 {
 605         struct netmsg_pr_timeout *nm = (void *)msg;
 606
 607         lwkt_replymsg(msg, nm->nm_prfn());
 608         return(EASYNC);
 609 }
 610
 611 /*
 612  * Handle a predicate event request.  This function is only called once
 613  * when the predicate message queueing request is received.
 614  */
 615 int
 616 netmsg_so_notify(lwkt_msg_t lmsg)
 617 {
 618         struct netmsg_so_notify *msg = (void *)lmsg;
 619         struct sockbuf *sb;
 620
 621         sb = (msg->nm_etype & NM_REVENT) ?
 622                         &msg->nm_so->so_rcv :
 623                         &msg->nm_so->so_snd;
 624
 625         /*
 626          * Reply immediately if the event has occured, otherwise queue the
 627          * request.
 628          */
 629         if (msg->nm_predicate((struct netmsg *)msg)) {
 630                 lwkt_replymsg(lmsg, lmsg->ms_error);
 631         } else {
 632                 TAILQ_INSERT_TAIL(&sb->sb_sel.si_mlist, msg, nm_list);
 633                 sb->sb_flags |= SB_MEVENT;
 634         }
 635         return(EASYNC);
 636 }
 637
 638 /*
 639  * Predicate requests can be aborted.  This function is only called once
 640  * and will interlock against processing/reply races (since such races
 641  * occur on the same thread that controls the port where the abort is
 642  * requeued).
 643  */
 644 int
 645 netmsg_so_notify_abort(lwkt_msg_t lmsg)
 646 {
 647         struct netmsg_so_notify *msg = (void *)lmsg;
 648         struct sockbuf *sb;
 649
 650         sb = (msg->nm_etype & NM_REVENT) ?
 651                         &msg->nm_so->so_rcv :
 652                         &msg->nm_so->so_snd;
 653         TAILQ_REMOVE(&sb->sb_sel.si_mlist, msg, nm_list);
 654         lwkt_replymsg(lmsg, EINTR);
 655         return(EASYNC);
 656 }
 657