sys/netbt/sco_socket.c

   1 /*-
   2  * Copyright (c) 2006 Itronix Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of Itronix Inc. may not be used to endorse
  14  *    or promote products derived from this software without specific
  15  *    prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24  * ON ANY THEORY OF LIABILITY, WHETHER IN
  25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27  * POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * $OpenBSD: sco_socket.c,v 1.1 2007/06/01 02:46:12 uwe Exp $
  30  * $NetBSD: sco_socket.c,v 1.9 2007/04/21 06:15:23 plunky Exp $
  31  */
  32
  33 /* load symbolic names */
  34 #ifdef BLUETOOTH_DEBUG
  35 #define PRUREQUESTS
  36 #define PRCOREQUESTS
  37 #endif
  38
  39 #include <sys/param.h>
  40 #include <sys/domain.h>
  41 #include <sys/kernel.h>
  42 #include <sys/mbuf.h>
  43 #include <sys/proc.h>
  44 #include <sys/protosw.h>
  45 #include <sys/socket.h>
  46 #include <sys/socketvar.h>
  47 #include <sys/systm.h>
  48 #include <sys/bus.h>
  49
  50 #include <sys/msgport2.h>
  51
  52 #include <netbt/bluetooth.h>
  53 #include <netbt/hci.h>
  54 #include <netbt/sco.h>
  55
  56 /*******************************************************************************
  57  *
  58  * SCO SOCK_SEQPACKET sockets - low latency audio data
  59  */
  60
  61 static void sco_connecting(void *);
  62 static void sco_connected(void *);
  63 static void sco_disconnected(void *, int);
  64 static void *sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
  65 static void sco_complete(void *, int);
  66 static void sco_linkmode(void *, int);
  67 static void sco_input(void *, struct mbuf *);
  68
  69 static const struct btproto sco_proto = {
  70         sco_connecting,
  71         sco_connected,
  72         sco_disconnected,
  73         sco_newconn,
  74         sco_complete,
  75         sco_linkmode,
  76         sco_input,
  77 };
  78
  79 int sco_sendspace = 4096;
  80 int sco_recvspace = 4096;
  81
  82 /*
  83  * get/set socket options
  84  */
  85 void
  86 sco_ctloutput(netmsg_t msg)
  87 {
  88         struct socket *so = msg->ctloutput.base.nm_so;
  89         struct sockopt *sopt = msg->ctloutput.nm_sopt;
  90         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
  91         struct mbuf *m;
  92         int err = 0;
  93
  94 #ifdef notyet                   /* XXX */
  95         DPRINTFN(2, "req %s\n", prcorequests[req]);
  96 #endif
  97
  98         if (pcb == NULL) {
  99                 err = EINVAL;
 100                 goto out;
 101         }
 102
 103         if (sopt->sopt_level != BTPROTO_SCO) {
 104                 err = ENOPROTOOPT;
 105                 goto out;
 106         }
 107
 108         switch(sopt->sopt_dir) {
 109         case PRCO_GETOPT:
 110                 m = m_get(M_WAITOK, MT_DATA);
 111                 m->m_len = sco_getopt(pcb, sopt->sopt_name, mtod(m, uint8_t *));
 112                 if (m->m_len == 0) {
 113                         m_freem(m);
 114                         m = NULL;
 115                         err = ENOPROTOOPT;
 116                 }
 117                 /* *opt = m; */
 118                 /* XXX There are possible memory leaks (Griffin) */
 119                 soopt_from_kbuf(sopt, mtod(m, void *), m->m_len);
 120                 break;
 121
 122         case PRCO_SETOPT:
 123                 m = m_get(M_WAITOK, MT_DATA);
 124                 KKASSERT(m != NULL);
 125                 err = soopt_to_kbuf(sopt, mtod(m,void*), m->m_len, m->m_len);
 126
 127                 if (m->m_len == 0) {
 128                         m_freem(m);
 129                         m = NULL;
 130                         err = EIO;
 131                 }
 132
 133                 err = sco_setopt(pcb, sopt->sopt_name, mtod(m, uint8_t *));
 134                 m_freem(m);
 135                 break;
 136
 137         default:
 138                 err = ENOPROTOOPT;
 139                 break;
 140         }
 141 out:
 142         lwkt_replymsg(&msg->ctloutput.base.lmsg, err);
 143 }
 144
 145 /*****************************************************************************
 146  *
 147  *      SCO Protocol socket callbacks
 148  *
 149  */
 150 static void
 151 sco_connecting(void *arg)
 152 {
 153         struct socket *so = arg;
 154
 155         DPRINTF("Connecting\n");
 156         soisconnecting(so);
 157 }
 158
 159 static void
 160 sco_connected(void *arg)
 161 {
 162         struct socket *so = arg;
 163
 164         DPRINTF("Connected\n");
 165         soisconnected(so);
 166 }
 167
 168 static void
 169 sco_disconnected(void *arg, int err)
 170 {
 171         struct socket *so = arg;
 172
 173         DPRINTF("Disconnected (%d)\n", err);
 174
 175         so->so_error = err;
 176         soisdisconnected(so);
 177 }
 178
 179 static void *
 180 sco_newconn(void *arg, struct sockaddr_bt *laddr,
 181     struct sockaddr_bt *raddr)
 182 {
 183         struct socket *so = arg;
 184
 185         DPRINTF("New Connection\n");
 186         so = sonewconn(so, 0);
 187         if (so == NULL)
 188                 return NULL;
 189
 190         soisconnecting(so);
 191         return so->so_pcb;
 192 }
 193
 194 static void
 195 sco_complete(void *arg, int num)
 196 {
 197         struct socket *so = arg;
 198
 199         while (num-- > 0)
 200                 sbdroprecord(&so->so_snd.sb);
 201
 202         sowwakeup(so);
 203 }
 204
 205 static void
 206 sco_linkmode(void *arg, int mode)
 207 {
 208 }
 209
 210 static void
 211 sco_input(void *arg, struct mbuf *m)
 212 {
 213         struct socket *so = arg;
 214
 215         /*
 216          * since this data is time sensitive, if the buffer
 217          * is full we just dump data until the latest one
 218          * will fit.
 219          */
 220
 221         while (m->m_pkthdr.len > sbspace(&so->so_rcv))
 222                 sbdroprecord(&so->so_rcv.sb);
 223
 224         DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len);
 225
 226         sbappendrecord(&so->so_rcv.sb, m);
 227         sorwakeup(so);
 228 }
 229
 230 /*
 231  * Implementation of usrreqs.
 232  */
 233 static void
 234 sco_sdetach(netmsg_t msg)
 235 {
 236         struct socket *so = msg->detach.base.nm_so;
 237         int error;
 238
 239         error = sco_detach((struct sco_pcb **)&so->so_pcb);
 240         lwkt_replymsg(&msg->detach.base.lmsg, error);
 241 }
 242
 243 /*
 244  * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
 245  *       will sofree() it when we return.
 246  */
 247 static void
 248 sco_sabort (netmsg_t msg)
 249 {
 250         struct socket *so = msg->abort.base.nm_so;
 251         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 252
 253         sco_disconnect(pcb, 0);
 254         soisdisconnected(so);
 255         sco_sdetach(msg);
 256         /* msg invalid now */
 257 }
 258
 259 static void
 260 sco_sdisconnect (netmsg_t msg)
 261 {
 262         struct socket *so = msg->abort.base.nm_so;
 263         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 264         int error;
 265
 266         soisdisconnecting(so);
 267
 268         error = sco_disconnect(pcb, so->so_linger);
 269         lwkt_replymsg(&msg->disconnect.base.lmsg, error);
 270 }
 271
 272 static void
 273 sco_sattach(netmsg_t msg)
 274 {
 275         struct socket *so = msg->attach.base.nm_so;
 276         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 277         int error;
 278
 279         if (pcb) {
 280                 error = EINVAL;
 281         } else {
 282                 error = soreserve(so, sco_sendspace, sco_recvspace,NULL);
 283                 if (error == 0) {
 284                         error = sco_attach((struct sco_pcb **)&so->so_pcb,
 285                                            &sco_proto, so);
 286                 }
 287         }
 288         lwkt_replymsg(&msg->attach.base.lmsg, error);
 289 }
 290
 291 static void
 292 sco_sbind(netmsg_t msg)
 293 {
 294         struct socket *so = msg->bind.base.nm_so;
 295         struct sockaddr *nam = msg->bind.nm_nam;
 296         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 297         struct sockaddr_bt *sa;
 298         int error;
 299
 300         KKASSERT(nam != NULL);
 301         sa = (struct sockaddr_bt *)nam;
 302
 303         if (sa->bt_len != sizeof(struct sockaddr_bt)) {
 304                 error = EINVAL;
 305         } else if (sa->bt_family != AF_BLUETOOTH) {
 306                 error = EAFNOSUPPORT;
 307         } else {
 308                 error = sco_bind(pcb, sa);
 309         }
 310         lwkt_replymsg(&msg->bind.base.lmsg, error);
 311 }
 312
 313 static void
 314 sco_sconnect(netmsg_t msg)
 315 {
 316         struct socket *so = msg->connect.base.nm_so;
 317         struct sockaddr *nam = msg->connect.nm_nam;
 318         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 319         struct sockaddr_bt *sa;
 320         int error;
 321
 322         KKASSERT(nam != NULL);
 323         sa = (struct sockaddr_bt *)nam;
 324
 325         if (sa->bt_len != sizeof(struct sockaddr_bt)) {
 326                 error = EINVAL;
 327         } else if (sa->bt_family != AF_BLUETOOTH) {
 328                 error = EAFNOSUPPORT;
 329         } else {
 330                 soisconnecting(so);
 331                 error = sco_connect(pcb, sa);
 332         }
 333         lwkt_replymsg(&msg->connect.base.lmsg, error);
 334 }
 335
 336 static void
 337 sco_speeraddr(netmsg_t msg)
 338 {
 339         struct socket *so = msg->peeraddr.base.nm_so;
 340         struct sockaddr **nam = msg->peeraddr.nm_nam;
 341         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 342         struct sockaddr_bt *sa, ssa;
 343         int error;
 344
 345         sa = &ssa;
 346         bzero(sa, sizeof *sa);
 347         sa->bt_len = sizeof(struct sockaddr_bt);
 348         sa->bt_family = AF_BLUETOOTH;
 349         error = sco_peeraddr(pcb, sa);
 350         *nam = dup_sockaddr((struct sockaddr *)sa);
 351         lwkt_replymsg(&msg->peeraddr.base.lmsg, error);
 352 }
 353
 354 static void
 355 sco_ssockaddr(netmsg_t msg)
 356 {
 357         struct socket *so = msg->sockaddr.base.nm_so;
 358         struct sockaddr **nam = msg->sockaddr.nm_nam;
 359         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 360         struct sockaddr_bt *sa, ssa;
 361         int error;
 362
 363         sa = &ssa;
 364         bzero(sa, sizeof *sa);
 365         sa->bt_len = sizeof(struct sockaddr_bt);
 366         sa->bt_family = AF_BLUETOOTH;
 367         error = sco_sockaddr(pcb, sa);
 368         *nam = dup_sockaddr((struct sockaddr *)sa);
 369
 370         lwkt_replymsg(&msg->sockaddr.base.lmsg, error);
 371 }
 372
 373 static void
 374 sco_sshutdown(netmsg_t msg)
 375 {
 376         socantsendmore(msg->shutdown.base.nm_so);
 377         lwkt_replymsg(&msg->shutdown.base.lmsg, 0);
 378 }
 379
 380 static void
 381 sco_ssend(netmsg_t msg)
 382 {
 383         struct socket *so = msg->send.base.nm_so;
 384         struct mbuf *m = msg->send.nm_m;
 385         struct mbuf *control = msg->send.nm_control;
 386         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 387         struct mbuf *m0;
 388         int error = 0;
 389
 390         KKASSERT(m != NULL);
 391         if (m->m_pkthdr.len == 0)
 392                 goto out;
 393
 394         if (m->m_pkthdr.len > pcb->sp_mtu) {
 395                 error = EMSGSIZE;
 396                 goto out;
 397         }
 398
 399         m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
 400         if (m0 == NULL) {
 401                 error = ENOMEM;
 402                 goto out;
 403         }
 404
 405         /* no use for that */
 406         if (control) {
 407                 m_freem(control);
 408                 control = NULL;
 409         }
 410
 411         sbappendrecord(&so->so_snd.sb, m);
 412         error = sco_send(pcb, m0);
 413         m = NULL;
 414 out:
 415         if (m)
 416                 m_freem(m);
 417         if (control)
 418                 m_freem(control);
 419         lwkt_replymsg(&msg->send.base.lmsg, error);
 420 }
 421
 422 static void
 423 sco_saccept(netmsg_t msg)
 424 {
 425         struct socket *so = msg->accept.base.nm_so;
 426         struct sockaddr **nam = msg->accept.nm_nam;
 427         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 428         struct sockaddr_bt *sa, ssa;
 429         int error;
 430
 431         sa = &ssa;
 432         bzero(sa, sizeof *sa);
 433         sa->bt_len = sizeof(struct sockaddr_bt);
 434         sa->bt_family = AF_BLUETOOTH;
 435         error = sco_peeraddr(pcb, sa);
 436         *nam = dup_sockaddr((struct sockaddr *)sa);
 437
 438         lwkt_replymsg(&msg->accept.base.lmsg, error);
 439 }
 440
 441 static void
 442 sco_slisten(netmsg_t msg)
 443 {
 444         struct socket *so = msg->listen.base.nm_so;
 445         struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
 446         int error;
 447
 448         error = sco_listen(pcb);
 449         lwkt_replymsg(&msg->accept.base.lmsg, error);
 450 }
 451
 452 struct pr_usrreqs sco_usrreqs = {
 453         .pru_abort = sco_sabort,
 454         .pru_accept = sco_saccept,
 455         .pru_attach = sco_sattach,
 456         .pru_bind = sco_sbind,
 457         .pru_connect = sco_sconnect,
 458         .pru_connect2 = pr_generic_notsupp,
 459         .pru_control = pr_generic_notsupp,
 460         .pru_detach = sco_sdetach,
 461         .pru_disconnect = sco_sdisconnect,
 462         .pru_listen = sco_slisten,
 463         .pru_peeraddr = sco_speeraddr,
 464         .pru_rcvd = pr_generic_notsupp,
 465         .pru_rcvoob = pr_generic_notsupp,
 466         .pru_send = sco_ssend,
 467         .pru_sense = pru_sense_null,
 468         .pru_shutdown = sco_sshutdown,
 469         .pru_sockaddr = sco_ssockaddr,
 470         .pru_sosend = sosend,
 471         .pru_soreceive = soreceive
 472 };