sco_socket.c revision 1.36
1 /* $NetBSD: sco_socket.c,v 1.36 2015/04/26 21:40:49 rtr Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of Itronix Inc. may not be used to endorse 16 * or promote products derived from this software without specific 17 * prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: sco_socket.c,v 1.36 2015/04/26 21:40:49 rtr Exp $"); 34 35 /* load symbolic names */ 36 #ifdef BLUETOOTH_DEBUG 37 #define PRUREQUESTS 38 #define PRCOREQUESTS 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/domain.h> 43 #include <sys/kernel.h> 44 #include <sys/mbuf.h> 45 #include <sys/proc.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/socketvar.h> 49 #include <sys/systm.h> 50 51 #include <netbt/bluetooth.h> 52 #include <netbt/hci.h> 53 #include <netbt/sco.h> 54 55 /******************************************************************************* 56 * 57 * SCO SOCK_SEQPACKET sockets - low latency audio data 58 */ 59 60 static void sco_connecting(void *); 61 static void sco_connected(void *); 62 static void sco_disconnected(void *, int); 63 static void *sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 64 static void sco_complete(void *, int); 65 static void sco_linkmode(void *, int); 66 static void sco_input(void *, struct mbuf *); 67 68 static const struct btproto sco_proto = { 69 sco_connecting, 70 sco_connected, 71 sco_disconnected, 72 sco_newconn, 73 sco_complete, 74 sco_linkmode, 75 sco_input, 76 }; 77 78 int sco_sendspace = 4096; 79 int sco_recvspace = 4096; 80 81 static int 82 sco_attach(struct socket *so, int proto) 83 { 84 int error; 85 86 KASSERT(so->so_pcb == NULL); 87 88 if (so->so_lock == NULL) { 89 mutex_obj_hold(bt_lock); 90 so->so_lock = bt_lock; 91 solock(so); 92 } 93 KASSERT(solocked(so)); 94 95 error = soreserve(so, sco_sendspace, sco_recvspace); 96 if (error) { 97 return error; 98 } 99 return sco_attach_pcb((struct sco_pcb **)&so->so_pcb, &sco_proto, so); 100 } 101 102 static void 103 sco_detach(struct socket *so) 104 { 105 KASSERT(so->so_pcb != NULL); 106 sco_detach_pcb((struct sco_pcb **)&so->so_pcb); 107 KASSERT(so->so_pcb == NULL); 108 } 109 110 static int 111 sco_accept(struct socket *so, struct sockaddr *nam) 112 { 113 struct sco_pcb *pcb = so->so_pcb; 114 115 KASSERT(solocked(so)); 116 KASSERT(nam != NULL); 117 118 if (pcb == NULL) 119 return EINVAL; 120 121 return sco_peeraddr_pcb(pcb, (struct sockaddr_bt *)nam); 122 } 123 124 static int 125 sco_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 126 { 127 struct sco_pcb *pcb = so->so_pcb; 128 struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; 129 130 KASSERT(solocked(so)); 131 KASSERT(nam != NULL); 132 133 if (pcb == NULL) 134 return EINVAL; 135 136 if (sa->bt_len != sizeof(struct sockaddr_bt)) 137 return EINVAL; 138 139 if (sa->bt_family != AF_BLUETOOTH) 140 return EAFNOSUPPORT; 141 142 return sco_bind_pcb(pcb, sa); 143 } 144 145 static int 146 sco_listen(struct socket *so, struct lwp *l) 147 { 148 struct sco_pcb *pcb = so->so_pcb; 149 150 KASSERT(solocked(so)); 151 152 if (pcb == NULL) 153 return EINVAL; 154 155 return sco_listen_pcb(pcb); 156 } 157 158 static int 159 sco_connect(struct socket *so, struct mbuf *nam, struct lwp *l) 160 { 161 struct sco_pcb *pcb = so->so_pcb; 162 struct sockaddr_bt *sa; 163 164 KASSERT(solocked(so)); 165 KASSERT(nam != NULL); 166 167 if (pcb == NULL) 168 return EINVAL; 169 170 sa = mtod(nam, struct sockaddr_bt *); 171 if (sa->bt_len != sizeof(struct sockaddr_bt)) 172 return EINVAL; 173 174 if (sa->bt_family != AF_BLUETOOTH) 175 return EAFNOSUPPORT; 176 177 soisconnecting(so); 178 return sco_connect_pcb(pcb, sa); 179 } 180 181 static int 182 sco_connect2(struct socket *so, struct socket *so2) 183 { 184 struct sco_pcb *pcb = so->so_pcb; 185 186 KASSERT(solocked(so)); 187 188 if (pcb == NULL) 189 return EINVAL; 190 191 return EOPNOTSUPP; 192 } 193 194 static int 195 sco_disconnect(struct socket *so) 196 { 197 struct sco_pcb *pcb = so->so_pcb; 198 199 KASSERT(solocked(so)); 200 201 if (pcb == NULL) 202 return EINVAL; 203 204 soisdisconnecting(so); 205 return sco_disconnect_pcb(pcb, so->so_linger); 206 } 207 208 static int 209 sco_shutdown(struct socket *so) 210 { 211 KASSERT(solocked(so)); 212 213 socantsendmore(so); 214 return 0; 215 } 216 217 static int 218 sco_abort(struct socket *so) 219 { 220 struct sco_pcb *pcb = so->so_pcb; 221 222 KASSERT(solocked(so)); 223 224 if (pcb == NULL) 225 return EINVAL; 226 227 sco_disconnect_pcb(pcb, 0); 228 soisdisconnected(so); 229 sco_detach(so); 230 return 0; 231 } 232 233 static int 234 sco_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 235 { 236 return EOPNOTSUPP; 237 } 238 239 static int 240 sco_stat(struct socket *so, struct stat *ub) 241 { 242 KASSERT(solocked(so)); 243 244 return 0; 245 } 246 247 static int 248 sco_peeraddr(struct socket *so, struct sockaddr *nam) 249 { 250 struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; 251 252 KASSERT(solocked(so)); 253 KASSERT(pcb != NULL); 254 KASSERT(nam != NULL); 255 256 return sco_peeraddr_pcb(pcb, (struct sockaddr_bt *)nam); 257 } 258 259 static int 260 sco_sockaddr(struct socket *so, struct sockaddr *nam) 261 { 262 struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; 263 264 KASSERT(solocked(so)); 265 KASSERT(pcb != NULL); 266 KASSERT(nam != NULL); 267 268 return sco_sockaddr_pcb(pcb, (struct sockaddr_bt *)nam); 269 } 270 271 static int 272 sco_rcvd(struct socket *so, int flags, struct lwp *l) 273 { 274 KASSERT(solocked(so)); 275 276 return EOPNOTSUPP; 277 } 278 279 static int 280 sco_recvoob(struct socket *so, struct mbuf *m, int flags) 281 { 282 KASSERT(solocked(so)); 283 284 return EOPNOTSUPP; 285 } 286 287 static int 288 sco_send(struct socket *so, struct mbuf *m, struct mbuf *nam, 289 struct mbuf *control, struct lwp *l) 290 { 291 struct sco_pcb *pcb = so->so_pcb; 292 int err = 0; 293 struct mbuf *m0; 294 295 KASSERT(solocked(so)); 296 KASSERT(m != NULL); 297 298 if (control) /* no use for that */ 299 m_freem(control); 300 301 if (pcb == NULL) { 302 err = EINVAL; 303 goto release; 304 } 305 306 if (m->m_pkthdr.len == 0) 307 goto release; 308 309 if (m->m_pkthdr.len > pcb->sp_mtu) { 310 err = EMSGSIZE; 311 goto release; 312 } 313 314 m0 = m_copypacket(m, M_DONTWAIT); 315 if (m0 == NULL) { 316 err = ENOMEM; 317 goto release; 318 } 319 320 sbappendrecord(&so->so_snd, m); 321 return sco_send_pcb(pcb, m0); 322 323 release: 324 m_freem(m); 325 return err; 326 } 327 328 static int 329 sco_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 330 { 331 KASSERT(solocked(so)); 332 333 if (m) 334 m_freem(m); 335 if (control) 336 m_freem(control); 337 338 return EOPNOTSUPP; 339 } 340 341 static int 342 sco_purgeif(struct socket *so, struct ifnet *ifp) 343 { 344 345 return EOPNOTSUPP; 346 } 347 348 /* 349 * get/set socket options 350 */ 351 int 352 sco_ctloutput(int req, struct socket *so, struct sockopt *sopt) 353 { 354 struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; 355 int err = 0; 356 357 DPRINTFN(2, "req %s\n", prcorequests[req]); 358 359 if (pcb == NULL) 360 return EINVAL; 361 362 if (sopt->sopt_level != BTPROTO_SCO) 363 return ENOPROTOOPT; 364 365 switch(req) { 366 case PRCO_GETOPT: 367 err = sco_getopt(pcb, sopt); 368 break; 369 370 case PRCO_SETOPT: 371 err = sco_setopt(pcb, sopt); 372 break; 373 374 default: 375 err = ENOPROTOOPT; 376 break; 377 } 378 379 return err; 380 } 381 382 /***************************************************************************** 383 * 384 * SCO Protocol socket callbacks 385 * 386 */ 387 static void 388 sco_connecting(void *arg) 389 { 390 struct socket *so = arg; 391 392 DPRINTF("Connecting\n"); 393 soisconnecting(so); 394 } 395 396 static void 397 sco_connected(void *arg) 398 { 399 struct socket *so = arg; 400 401 DPRINTF("Connected\n"); 402 soisconnected(so); 403 } 404 405 static void 406 sco_disconnected(void *arg, int err) 407 { 408 struct socket *so = arg; 409 410 DPRINTF("Disconnected (%d)\n", err); 411 412 so->so_error = err; 413 soisdisconnected(so); 414 } 415 416 static void * 417 sco_newconn(void *arg, struct sockaddr_bt *laddr, 418 struct sockaddr_bt *raddr) 419 { 420 struct socket *so = arg; 421 422 DPRINTF("New Connection\n"); 423 so = sonewconn(so, false); 424 if (so == NULL) 425 return NULL; 426 427 soisconnecting(so); 428 return so->so_pcb; 429 } 430 431 static void 432 sco_complete(void *arg, int num) 433 { 434 struct socket *so = arg; 435 436 while (num-- > 0) 437 sbdroprecord(&so->so_snd); 438 439 sowwakeup(so); 440 } 441 442 static void 443 sco_linkmode(void *arg, int mode) 444 { 445 } 446 447 static void 448 sco_input(void *arg, struct mbuf *m) 449 { 450 struct socket *so = arg; 451 452 /* 453 * since this data is time sensitive, if the buffer 454 * is full we just dump data until the latest one 455 * will fit. 456 */ 457 458 while (m->m_pkthdr.len > sbspace(&so->so_rcv)) 459 sbdroprecord(&so->so_rcv); 460 461 DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len); 462 463 sbappendrecord(&so->so_rcv, m); 464 sorwakeup(so); 465 } 466 467 PR_WRAP_USRREQS(sco) 468 469 #define sco_attach sco_attach_wrapper 470 #define sco_detach sco_detach_wrapper 471 #define sco_accept sco_accept_wrapper 472 #define sco_bind sco_bind_wrapper 473 #define sco_listen sco_listen_wrapper 474 #define sco_connect sco_connect_wrapper 475 #define sco_connect2 sco_connect2_wrapper 476 #define sco_disconnect sco_disconnect_wrapper 477 #define sco_shutdown sco_shutdown_wrapper 478 #define sco_abort sco_abort_wrapper 479 #define sco_ioctl sco_ioctl_wrapper 480 #define sco_stat sco_stat_wrapper 481 #define sco_peeraddr sco_peeraddr_wrapper 482 #define sco_sockaddr sco_sockaddr_wrapper 483 #define sco_rcvd sco_rcvd_wrapper 484 #define sco_recvoob sco_recvoob_wrapper 485 #define sco_send sco_send_wrapper 486 #define sco_sendoob sco_sendoob_wrapper 487 #define sco_purgeif sco_purgeif_wrapper 488 489 const struct pr_usrreqs sco_usrreqs = { 490 .pr_attach = sco_attach, 491 .pr_detach = sco_detach, 492 .pr_accept = sco_accept, 493 .pr_bind = sco_bind, 494 .pr_listen = sco_listen, 495 .pr_connect = sco_connect, 496 .pr_connect2 = sco_connect2, 497 .pr_disconnect = sco_disconnect, 498 .pr_shutdown = sco_shutdown, 499 .pr_abort = sco_abort, 500 .pr_ioctl = sco_ioctl, 501 .pr_stat = sco_stat, 502 .pr_peeraddr = sco_peeraddr, 503 .pr_sockaddr = sco_sockaddr, 504 .pr_rcvd = sco_rcvd, 505 .pr_recvoob = sco_recvoob, 506 .pr_send = sco_send, 507 .pr_sendoob = sco_sendoob, 508 .pr_purgeif = sco_purgeif, 509 }; 510
Indexes created Fri Oct 03 02:09:57 GMT 2025