| 1 | /* $NetBSD: sco_socket.c,v 1.37 2015/05/02 17:18:03 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 1.37 2015/05/02 17:18:03 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 sockaddr *nam, struct lwp *l) |
| 160 | { |
| 161 | struct sco_pcb *pcb = so->so_pcb; |
| 162 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
| 163 | |
| 164 | KASSERT(solocked(so)); |
| 165 | KASSERT(nam != NULL); |
| 166 | |
| 167 | if (pcb == NULL) |
| 168 | return EINVAL; |
| 169 | |
| 170 | if (sa->bt_len != sizeof(struct sockaddr_bt)) |
| 171 | return EINVAL; |
| 172 | |
| 173 | if (sa->bt_family != AF_BLUETOOTH) |
| 174 | return EAFNOSUPPORT; |
| 175 | |
| 176 | soisconnecting(so); |
| 177 | return sco_connect_pcb(pcb, sa); |
| 178 | } |
| 179 | |
| 180 | static int |
| 181 | sco_connect2(struct socket *so, struct socket *so2) |
| 182 | { |
| 183 | struct sco_pcb *pcb = so->so_pcb; |
| 184 | |
| 185 | KASSERT(solocked(so)); |
| 186 | |
| 187 | if (pcb == NULL) |
| 188 | return EINVAL; |
| 189 | |
| 190 | return EOPNOTSUPP; |
| 191 | } |
| 192 | |
| 193 | static int |
| 194 | sco_disconnect(struct socket *so) |
| 195 | { |
| 196 | struct sco_pcb *pcb = so->so_pcb; |
| 197 | |
| 198 | KASSERT(solocked(so)); |
| 199 | |
| 200 | if (pcb == NULL) |
| 201 | return EINVAL; |
| 202 | |
| 203 | soisdisconnecting(so); |
| 204 | return sco_disconnect_pcb(pcb, so->so_linger); |
| 205 | } |
| 206 | |
| 207 | static int |
| 208 | sco_shutdown(struct socket *so) |
| 209 | { |
| 210 | KASSERT(solocked(so)); |
| 211 | |
| 212 | socantsendmore(so); |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | static int |
| 217 | sco_abort(struct socket *so) |
| 218 | { |
| 219 | struct sco_pcb *pcb = so->so_pcb; |
| 220 | |
| 221 | KASSERT(solocked(so)); |
| 222 | |
| 223 | if (pcb == NULL) |
| 224 | return EINVAL; |
| 225 | |
| 226 | sco_disconnect_pcb(pcb, 0); |
| 227 | soisdisconnected(so); |
| 228 | sco_detach(so); |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static int |
| 233 | sco_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) |
| 234 | { |
| 235 | return EOPNOTSUPP; |
| 236 | } |
| 237 | |
| 238 | static int |
| 239 | sco_stat(struct socket *so, struct stat *ub) |
| 240 | { |
| 241 | KASSERT(solocked(so)); |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static int |
| 247 | sco_peeraddr(struct socket *so, struct sockaddr *nam) |
| 248 | { |
| 249 | struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; |
| 250 | |
| 251 | KASSERT(solocked(so)); |
| 252 | KASSERT(pcb != NULL); |
| 253 | KASSERT(nam != NULL); |
| 254 | |
| 255 | return sco_peeraddr_pcb(pcb, (struct sockaddr_bt *)nam); |
| 256 | } |
| 257 | |
| 258 | static int |
| 259 | sco_sockaddr(struct socket *so, struct sockaddr *nam) |
| 260 | { |
| 261 | struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; |
| 262 | |
| 263 | KASSERT(solocked(so)); |
| 264 | KASSERT(pcb != NULL); |
| 265 | KASSERT(nam != NULL); |
| 266 | |
| 267 | return sco_sockaddr_pcb(pcb, (struct sockaddr_bt *)nam); |
| 268 | } |
| 269 | |
| 270 | static int |
| 271 | sco_rcvd(struct socket *so, int flags, struct lwp *l) |
| 272 | { |
| 273 | KASSERT(solocked(so)); |
| 274 | |
| 275 | return EOPNOTSUPP; |
| 276 | } |
| 277 | |
| 278 | static int |
| 279 | sco_recvoob(struct socket *so, struct mbuf *m, int flags) |
| 280 | { |
| 281 | KASSERT(solocked(so)); |
| 282 | |
| 283 | return EOPNOTSUPP; |
| 284 | } |
| 285 | |
| 286 | static int |
| 287 | sco_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, |
| 288 | struct mbuf *control, struct lwp *l) |
| 289 | { |
| 290 | struct sco_pcb *pcb = so->so_pcb; |
| 291 | int err = 0; |
| 292 | struct mbuf *m0; |
| 293 | |
| 294 | KASSERT(solocked(so)); |
| 295 | KASSERT(m != NULL); |
| 296 | |
| 297 | if (control) /* no use for that */ |
| 298 | m_freem(control); |
| 299 | |
| 300 | if (pcb == NULL) { |
| 301 | err = EINVAL; |
| 302 | goto release; |
| 303 | } |
| 304 | |
| 305 | if (m->m_pkthdr.len == 0) |
| 306 | goto release; |
| 307 | |
| 308 | if (m->m_pkthdr.len > pcb->sp_mtu) { |
| 309 | err = EMSGSIZE; |
| 310 | goto release; |
| 311 | } |
| 312 | |
| 313 | m0 = m_copypacket(m, M_DONTWAIT); |
| 314 | if (m0 == NULL) { |
| 315 | err = ENOMEM; |
| 316 | goto release; |
| 317 | } |
| 318 | |
| 319 | sbappendrecord(&so->so_snd, m); |
| 320 | return sco_send_pcb(pcb, m0); |
| 321 | |
| 322 | release: |
| 323 | m_freem(m); |
| 324 | return err; |
| 325 | } |
| 326 | |
| 327 | static int |
| 328 | sco_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) |
| 329 | { |
| 330 | KASSERT(solocked(so)); |
| 331 | |
| 332 | if (m) |
| 333 | m_freem(m); |
| 334 | if (control) |
| 335 | m_freem(control); |
| 336 | |
| 337 | return EOPNOTSUPP; |
| 338 | } |
| 339 | |
| 340 | static int |
| 341 | sco_purgeif(struct socket *so, struct ifnet *ifp) |
| 342 | { |
| 343 | |
| 344 | return EOPNOTSUPP; |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * get/set socket options |
| 349 | */ |
| 350 | int |
| 351 | sco_ctloutput(int req, struct socket *so, struct sockopt *sopt) |
| 352 | { |
| 353 | struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb; |
| 354 | int err = 0; |
| 355 | |
| 356 | DPRINTFN(2, "req %s\n" , prcorequests[req]); |
| 357 | |
| 358 | if (pcb == NULL) |
| 359 | return EINVAL; |
| 360 | |
| 361 | if (sopt->sopt_level != BTPROTO_SCO) |
| 362 | return ENOPROTOOPT; |
| 363 | |
| 364 | switch(req) { |
| 365 | case PRCO_GETOPT: |
| 366 | err = sco_getopt(pcb, sopt); |
| 367 | break; |
| 368 | |
| 369 | case PRCO_SETOPT: |
| 370 | err = sco_setopt(pcb, sopt); |
| 371 | break; |
| 372 | |
| 373 | default: |
| 374 | err = ENOPROTOOPT; |
| 375 | break; |
| 376 | } |
| 377 | |
| 378 | return err; |
| 379 | } |
| 380 | |
| 381 | /***************************************************************************** |
| 382 | * |
| 383 | * SCO Protocol socket callbacks |
| 384 | * |
| 385 | */ |
| 386 | static void |
| 387 | sco_connecting(void *arg) |
| 388 | { |
| 389 | struct socket *so = arg; |
| 390 | |
| 391 | DPRINTF("Connecting\n" ); |
| 392 | soisconnecting(so); |
| 393 | } |
| 394 | |
| 395 | static void |
| 396 | sco_connected(void *arg) |
| 397 | { |
| 398 | struct socket *so = arg; |
| 399 | |
| 400 | DPRINTF("Connected\n" ); |
| 401 | soisconnected(so); |
| 402 | } |
| 403 | |
| 404 | static void |
| 405 | sco_disconnected(void *arg, int err) |
| 406 | { |
| 407 | struct socket *so = arg; |
| 408 | |
| 409 | DPRINTF("Disconnected (%d)\n" , err); |
| 410 | |
| 411 | so->so_error = err; |
| 412 | soisdisconnected(so); |
| 413 | } |
| 414 | |
| 415 | static void * |
| 416 | sco_newconn(void *arg, struct sockaddr_bt *laddr, |
| 417 | struct sockaddr_bt *raddr) |
| 418 | { |
| 419 | struct socket *so = arg; |
| 420 | |
| 421 | DPRINTF("New Connection\n" ); |
| 422 | so = sonewconn(so, false); |
| 423 | if (so == NULL) |
| 424 | return NULL; |
| 425 | |
| 426 | soisconnecting(so); |
| 427 | return so->so_pcb; |
| 428 | } |
| 429 | |
| 430 | static void |
| 431 | sco_complete(void *arg, int num) |
| 432 | { |
| 433 | struct socket *so = arg; |
| 434 | |
| 435 | while (num-- > 0) |
| 436 | sbdroprecord(&so->so_snd); |
| 437 | |
| 438 | sowwakeup(so); |
| 439 | } |
| 440 | |
| 441 | static void |
| 442 | sco_linkmode(void *arg, int mode) |
| 443 | { |
| 444 | } |
| 445 | |
| 446 | static void |
| 447 | sco_input(void *arg, struct mbuf *m) |
| 448 | { |
| 449 | struct socket *so = arg; |
| 450 | |
| 451 | /* |
| 452 | * since this data is time sensitive, if the buffer |
| 453 | * is full we just dump data until the latest one |
| 454 | * will fit. |
| 455 | */ |
| 456 | |
| 457 | while (m->m_pkthdr.len > sbspace(&so->so_rcv)) |
| 458 | sbdroprecord(&so->so_rcv); |
| 459 | |
| 460 | DPRINTFN(10, "received %d bytes\n" , m->m_pkthdr.len); |
| 461 | |
| 462 | sbappendrecord(&so->so_rcv, m); |
| 463 | sorwakeup(so); |
| 464 | } |
| 465 | |
| 466 | PR_WRAP_USRREQS(sco) |
| 467 | |
| 468 | #define sco_attach sco_attach_wrapper |
| 469 | #define sco_detach sco_detach_wrapper |
| 470 | #define sco_accept sco_accept_wrapper |
| 471 | #define sco_bind sco_bind_wrapper |
| 472 | #define sco_listen sco_listen_wrapper |
| 473 | #define sco_connect sco_connect_wrapper |
| 474 | #define sco_connect2 sco_connect2_wrapper |
| 475 | #define sco_disconnect sco_disconnect_wrapper |
| 476 | #define sco_shutdown sco_shutdown_wrapper |
| 477 | #define sco_abort sco_abort_wrapper |
| 478 | #define sco_ioctl sco_ioctl_wrapper |
| 479 | #define sco_stat sco_stat_wrapper |
| 480 | #define sco_peeraddr sco_peeraddr_wrapper |
| 481 | #define sco_sockaddr sco_sockaddr_wrapper |
| 482 | #define sco_rcvd sco_rcvd_wrapper |
| 483 | #define sco_recvoob sco_recvoob_wrapper |
| 484 | #define sco_send sco_send_wrapper |
| 485 | #define sco_sendoob sco_sendoob_wrapper |
| 486 | #define sco_purgeif sco_purgeif_wrapper |
| 487 | |
| 488 | const struct pr_usrreqs sco_usrreqs = { |
| 489 | .pr_attach = sco_attach, |
| 490 | .pr_detach = sco_detach, |
| 491 | .pr_accept = sco_accept, |
| 492 | .pr_bind = sco_bind, |
| 493 | .pr_listen = sco_listen, |
| 494 | .pr_connect = sco_connect, |
| 495 | .pr_connect2 = sco_connect2, |
| 496 | .pr_disconnect = sco_disconnect, |
| 497 | .pr_shutdown = sco_shutdown, |
| 498 | .pr_abort = sco_abort, |
| 499 | .pr_ioctl = sco_ioctl, |
| 500 | .pr_stat = sco_stat, |
| 501 | .pr_peeraddr = sco_peeraddr, |
| 502 | .pr_sockaddr = sco_sockaddr, |
| 503 | .pr_rcvd = sco_rcvd, |
| 504 | .pr_recvoob = sco_recvoob, |
| 505 | .pr_send = sco_send, |
| 506 | .pr_sendoob = sco_sendoob, |
| 507 | .pr_purgeif = sco_purgeif, |
| 508 | }; |
| 509 | |