| 1 | /* $NetBSD: rfcomm_upper.c,v 1.22 2014/11/16 21:34:27 plunky Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006 Itronix Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Written by Iain Hibbert for Itronix Inc. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. The name of Itronix Inc. may not be used to endorse |
| 18 | * or promote products derived from this software without specific |
| 19 | * prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 23 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY |
| 25 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 26 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 27 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 28 | * ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include <sys/cdefs.h> |
| 35 | __KERNEL_RCSID(0, "$NetBSD: rfcomm_upper.c,v 1.22 2014/11/16 21:34:27 plunky Exp $" ); |
| 36 | |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/kernel.h> |
| 39 | #include <sys/mbuf.h> |
| 40 | #include <sys/kmem.h> |
| 41 | #include <sys/socketvar.h> |
| 42 | #include <sys/systm.h> |
| 43 | |
| 44 | #include <netbt/bluetooth.h> |
| 45 | #include <netbt/hci.h> |
| 46 | #include <netbt/l2cap.h> |
| 47 | #include <netbt/rfcomm.h> |
| 48 | |
| 49 | /**************************************************************************** |
| 50 | * |
| 51 | * RFCOMM DLC - Upper Protocol API |
| 52 | * |
| 53 | * Currently the only 'Port Emulation Entity' is the RFCOMM socket code |
| 54 | * but it is should be possible to provide a pseudo-device for a direct |
| 55 | * tty interface. |
| 56 | */ |
| 57 | |
| 58 | /* |
| 59 | * rfcomm_attach_pcb(handle, proto, upper) |
| 60 | * |
| 61 | * attach a new RFCOMM DLC to handle, populate with reasonable defaults |
| 62 | */ |
| 63 | int |
| 64 | rfcomm_attach_pcb(struct rfcomm_dlc **handle, |
| 65 | const struct btproto *proto, void *upper) |
| 66 | { |
| 67 | struct rfcomm_dlc *dlc; |
| 68 | |
| 69 | KASSERT(handle != NULL); |
| 70 | KASSERT(proto != NULL); |
| 71 | KASSERT(upper != NULL); |
| 72 | |
| 73 | dlc = kmem_intr_zalloc(sizeof(struct rfcomm_dlc), KM_NOSLEEP); |
| 74 | if (dlc == NULL) |
| 75 | return ENOMEM; |
| 76 | |
| 77 | dlc->rd_state = RFCOMM_DLC_CLOSED; |
| 78 | dlc->rd_mtu = rfcomm_mtu_default; |
| 79 | |
| 80 | dlc->rd_proto = proto; |
| 81 | dlc->rd_upper = upper; |
| 82 | |
| 83 | dlc->rd_laddr.bt_len = sizeof(struct sockaddr_bt); |
| 84 | dlc->rd_laddr.bt_family = AF_BLUETOOTH; |
| 85 | dlc->rd_laddr.bt_psm = L2CAP_PSM_RFCOMM; |
| 86 | |
| 87 | dlc->rd_raddr.bt_len = sizeof(struct sockaddr_bt); |
| 88 | dlc->rd_raddr.bt_family = AF_BLUETOOTH; |
| 89 | dlc->rd_raddr.bt_psm = L2CAP_PSM_RFCOMM; |
| 90 | |
| 91 | dlc->rd_lmodem = RFCOMM_MSC_RTC | RFCOMM_MSC_RTR | RFCOMM_MSC_DV; |
| 92 | |
| 93 | callout_init(&dlc->rd_timeout, 0); |
| 94 | callout_setfunc(&dlc->rd_timeout, rfcomm_dlc_timeout, dlc); |
| 95 | |
| 96 | *handle = dlc; |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | /* |
| 101 | * rfcomm_bind_pcb(dlc, sockaddr) |
| 102 | * |
| 103 | * bind DLC to local address |
| 104 | */ |
| 105 | int |
| 106 | rfcomm_bind_pcb(struct rfcomm_dlc *dlc, struct sockaddr_bt *addr) |
| 107 | { |
| 108 | |
| 109 | if (dlc->rd_state != RFCOMM_DLC_CLOSED) |
| 110 | return EINVAL; |
| 111 | |
| 112 | memcpy(&dlc->rd_laddr, addr, sizeof(struct sockaddr_bt)); |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * rfcomm_sockaddr_pcb(dlc, sockaddr) |
| 118 | * |
| 119 | * return local address |
| 120 | */ |
| 121 | int |
| 122 | rfcomm_sockaddr_pcb(struct rfcomm_dlc *dlc, struct sockaddr_bt *addr) |
| 123 | { |
| 124 | |
| 125 | memcpy(addr, &dlc->rd_laddr, sizeof(struct sockaddr_bt)); |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * rfcomm_connect_pcb(dlc, sockaddr) |
| 131 | * |
| 132 | * Initiate connection of RFCOMM DLC to remote address. |
| 133 | */ |
| 134 | int |
| 135 | rfcomm_connect_pcb(struct rfcomm_dlc *dlc, struct sockaddr_bt *dest) |
| 136 | { |
| 137 | struct rfcomm_session *rs; |
| 138 | int err = 0; |
| 139 | |
| 140 | if (dlc->rd_state != RFCOMM_DLC_CLOSED) |
| 141 | return EISCONN; |
| 142 | |
| 143 | memcpy(&dlc->rd_raddr, dest, sizeof(struct sockaddr_bt)); |
| 144 | |
| 145 | if (dlc->rd_raddr.bt_channel < RFCOMM_CHANNEL_MIN |
| 146 | || dlc->rd_raddr.bt_channel > RFCOMM_CHANNEL_MAX |
| 147 | || bdaddr_any(&dlc->rd_raddr.bt_bdaddr)) |
| 148 | return EDESTADDRREQ; |
| 149 | |
| 150 | if (dlc->rd_raddr.bt_psm == L2CAP_PSM_ANY) |
| 151 | dlc->rd_raddr.bt_psm = L2CAP_PSM_RFCOMM; |
| 152 | else if (dlc->rd_raddr.bt_psm != L2CAP_PSM_RFCOMM |
| 153 | && (dlc->rd_raddr.bt_psm < 0x1001 |
| 154 | || L2CAP_PSM_INVALID(dlc->rd_raddr.bt_psm))) |
| 155 | return EINVAL; |
| 156 | |
| 157 | /* |
| 158 | * We are allowed only one RFCOMM session between any 2 Bluetooth |
| 159 | * devices, so see if there is a session already otherwise create |
| 160 | * one and set it connecting. |
| 161 | */ |
| 162 | rs = rfcomm_session_lookup(&dlc->rd_laddr, &dlc->rd_raddr); |
| 163 | if (rs == NULL) { |
| 164 | rs = rfcomm_session_alloc(&rfcomm_session_active, |
| 165 | &dlc->rd_laddr); |
| 166 | if (rs == NULL) |
| 167 | return ENOMEM; |
| 168 | |
| 169 | rs->rs_flags |= RFCOMM_SESSION_INITIATOR; |
| 170 | rs->rs_state = RFCOMM_SESSION_WAIT_CONNECT; |
| 171 | |
| 172 | err = l2cap_connect_pcb(rs->rs_l2cap, &dlc->rd_raddr); |
| 173 | if (err) { |
| 174 | rfcomm_session_free(rs); |
| 175 | return err; |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * This session will start up automatically when its |
| 180 | * L2CAP channel is connected. |
| 181 | */ |
| 182 | } |
| 183 | |
| 184 | /* construct DLC */ |
| 185 | dlc->rd_dlci = RFCOMM_MKDLCI(IS_INITIATOR(rs) ? 0:1, dest->bt_channel); |
| 186 | if (rfcomm_dlc_lookup(rs, dlc->rd_dlci)) |
| 187 | return EBUSY; |
| 188 | |
| 189 | l2cap_sockaddr_pcb(rs->rs_l2cap, &dlc->rd_laddr); |
| 190 | |
| 191 | /* |
| 192 | * attach the DLC to the session and start it off |
| 193 | */ |
| 194 | dlc->rd_session = rs; |
| 195 | dlc->rd_state = RFCOMM_DLC_WAIT_SESSION; |
| 196 | LIST_INSERT_HEAD(&rs->rs_dlcs, dlc, rd_next); |
| 197 | |
| 198 | if (rs->rs_state == RFCOMM_SESSION_OPEN) |
| 199 | err = rfcomm_dlc_connect(dlc); |
| 200 | |
| 201 | return err; |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * rfcomm_peeraddr_pcb(dlc, sockaddr) |
| 206 | * |
| 207 | * return remote address |
| 208 | */ |
| 209 | int |
| 210 | rfcomm_peeraddr_pcb(struct rfcomm_dlc *dlc, struct sockaddr_bt *addr) |
| 211 | { |
| 212 | |
| 213 | memcpy(addr, &dlc->rd_raddr, sizeof(struct sockaddr_bt)); |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * rfcomm_disconnect_pcb(dlc, linger) |
| 219 | * |
| 220 | * disconnect RFCOMM DLC |
| 221 | */ |
| 222 | int |
| 223 | rfcomm_disconnect_pcb(struct rfcomm_dlc *dlc, int linger) |
| 224 | { |
| 225 | struct rfcomm_session *rs = dlc->rd_session; |
| 226 | int err = 0; |
| 227 | |
| 228 | KASSERT(dlc != NULL); |
| 229 | |
| 230 | switch (dlc->rd_state) { |
| 231 | case RFCOMM_DLC_CLOSED: |
| 232 | case RFCOMM_DLC_LISTEN: |
| 233 | return EINVAL; |
| 234 | |
| 235 | case RFCOMM_DLC_WAIT_SEND_UA: |
| 236 | err = rfcomm_session_send_frame(rs, |
| 237 | RFCOMM_FRAME_DM, dlc->rd_dlci); |
| 238 | |
| 239 | /* fall through */ |
| 240 | case RFCOMM_DLC_WAIT_SESSION: |
| 241 | case RFCOMM_DLC_WAIT_CONNECT: |
| 242 | case RFCOMM_DLC_WAIT_SEND_SABM: |
| 243 | rfcomm_dlc_close(dlc, 0); |
| 244 | break; |
| 245 | |
| 246 | case RFCOMM_DLC_OPEN: |
| 247 | if (dlc->rd_txbuf != NULL && linger != 0) { |
| 248 | dlc->rd_flags |= RFCOMM_DLC_SHUTDOWN; |
| 249 | break; |
| 250 | } |
| 251 | |
| 252 | /* else fall through */ |
| 253 | case RFCOMM_DLC_WAIT_RECV_UA: |
| 254 | dlc->rd_state = RFCOMM_DLC_WAIT_DISCONNECT; |
| 255 | err = rfcomm_session_send_frame(rs, RFCOMM_FRAME_DISC, |
| 256 | dlc->rd_dlci); |
| 257 | callout_schedule(&dlc->rd_timeout, rfcomm_ack_timeout * hz); |
| 258 | break; |
| 259 | |
| 260 | case RFCOMM_DLC_WAIT_DISCONNECT: |
| 261 | err = EALREADY; |
| 262 | break; |
| 263 | |
| 264 | default: |
| 265 | UNKNOWN(dlc->rd_state); |
| 266 | break; |
| 267 | } |
| 268 | |
| 269 | return err; |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * rfcomm_detach_pcb(handle) |
| 274 | * |
| 275 | * detach RFCOMM DLC from handle |
| 276 | */ |
| 277 | void |
| 278 | rfcomm_detach_pcb(struct rfcomm_dlc **handle) |
| 279 | { |
| 280 | struct rfcomm_dlc *dlc = *handle; |
| 281 | |
| 282 | if (dlc->rd_state != RFCOMM_DLC_CLOSED) |
| 283 | rfcomm_dlc_close(dlc, 0); |
| 284 | |
| 285 | if (dlc->rd_txbuf != NULL) { |
| 286 | m_freem(dlc->rd_txbuf); |
| 287 | dlc->rd_txbuf = NULL; |
| 288 | } |
| 289 | |
| 290 | dlc->rd_upper = NULL; |
| 291 | *handle = NULL; |
| 292 | |
| 293 | /* |
| 294 | * If callout is invoking we can't free the DLC so |
| 295 | * mark it and let the callout release it. |
| 296 | */ |
| 297 | if (callout_invoking(&dlc->rd_timeout)) |
| 298 | dlc->rd_flags |= RFCOMM_DLC_DETACH; |
| 299 | else { |
| 300 | callout_destroy(&dlc->rd_timeout); |
| 301 | kmem_intr_free(dlc, sizeof(*dlc)); |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * rfcomm_listen_pcb(dlc) |
| 307 | * |
| 308 | * This DLC is a listener. We look for an existing listening session |
| 309 | * with a matching address to attach to or else create a new one on |
| 310 | * the listeners list. If the ANY channel is given, allocate the first |
| 311 | * available for the session. |
| 312 | */ |
| 313 | int |
| 314 | rfcomm_listen_pcb(struct rfcomm_dlc *dlc) |
| 315 | { |
| 316 | struct rfcomm_session *rs; |
| 317 | struct rfcomm_dlc *used; |
| 318 | struct sockaddr_bt addr; |
| 319 | int err, channel; |
| 320 | |
| 321 | if (dlc->rd_state != RFCOMM_DLC_CLOSED) |
| 322 | return EISCONN; |
| 323 | |
| 324 | if (dlc->rd_laddr.bt_channel != RFCOMM_CHANNEL_ANY |
| 325 | && (dlc->rd_laddr.bt_channel < RFCOMM_CHANNEL_MIN |
| 326 | || dlc->rd_laddr.bt_channel > RFCOMM_CHANNEL_MAX)) |
| 327 | return EADDRNOTAVAIL; |
| 328 | |
| 329 | if (dlc->rd_laddr.bt_psm == L2CAP_PSM_ANY) |
| 330 | dlc->rd_laddr.bt_psm = L2CAP_PSM_RFCOMM; |
| 331 | else if (dlc->rd_laddr.bt_psm != L2CAP_PSM_RFCOMM |
| 332 | && (dlc->rd_laddr.bt_psm < 0x1001 |
| 333 | || L2CAP_PSM_INVALID(dlc->rd_laddr.bt_psm))) |
| 334 | return EADDRNOTAVAIL; |
| 335 | |
| 336 | LIST_FOREACH(rs, &rfcomm_session_listen, rs_next) { |
| 337 | l2cap_sockaddr_pcb(rs->rs_l2cap, &addr); |
| 338 | |
| 339 | if (addr.bt_psm != dlc->rd_laddr.bt_psm) |
| 340 | continue; |
| 341 | |
| 342 | if (bdaddr_same(&dlc->rd_laddr.bt_bdaddr, &addr.bt_bdaddr)) |
| 343 | break; |
| 344 | } |
| 345 | |
| 346 | if (rs == NULL) { |
| 347 | rs = rfcomm_session_alloc(&rfcomm_session_listen, |
| 348 | &dlc->rd_laddr); |
| 349 | if (rs == NULL) |
| 350 | return ENOMEM; |
| 351 | |
| 352 | rs->rs_state = RFCOMM_SESSION_LISTEN; |
| 353 | |
| 354 | err = l2cap_listen_pcb(rs->rs_l2cap); |
| 355 | if (err) { |
| 356 | rfcomm_session_free(rs); |
| 357 | return err; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | if (dlc->rd_laddr.bt_channel == RFCOMM_CHANNEL_ANY) { |
| 362 | channel = RFCOMM_CHANNEL_MIN; |
| 363 | used = LIST_FIRST(&rs->rs_dlcs); |
| 364 | |
| 365 | while (used != NULL) { |
| 366 | if (used->rd_laddr.bt_channel == channel) { |
| 367 | if (channel++ == RFCOMM_CHANNEL_MAX) |
| 368 | return EADDRNOTAVAIL; |
| 369 | |
| 370 | used = LIST_FIRST(&rs->rs_dlcs); |
| 371 | } else { |
| 372 | used = LIST_NEXT(used, rd_next); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | dlc->rd_laddr.bt_channel = channel; |
| 377 | } |
| 378 | |
| 379 | dlc->rd_session = rs; |
| 380 | dlc->rd_state = RFCOMM_DLC_LISTEN; |
| 381 | LIST_INSERT_HEAD(&rs->rs_dlcs, dlc, rd_next); |
| 382 | |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * rfcomm_send_pcb(dlc, mbuf) |
| 388 | * |
| 389 | * Output data on DLC. This is streamed data, so we add it |
| 390 | * to our buffer and start the DLC, which will assemble |
| 391 | * packets and send them if it can. |
| 392 | */ |
| 393 | int |
| 394 | rfcomm_send_pcb(struct rfcomm_dlc *dlc, struct mbuf *m) |
| 395 | { |
| 396 | |
| 397 | if (dlc->rd_txbuf != NULL) { |
| 398 | dlc->rd_txbuf->m_pkthdr.len += m->m_pkthdr.len; |
| 399 | m_cat(dlc->rd_txbuf, m); |
| 400 | } else { |
| 401 | dlc->rd_txbuf = m; |
| 402 | } |
| 403 | |
| 404 | if (dlc->rd_state == RFCOMM_DLC_OPEN) |
| 405 | rfcomm_dlc_start(dlc); |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | /* |
| 411 | * rfcomm_rcvd_pcb(dlc, space) |
| 412 | * |
| 413 | * Indicate space now available in receive buffer |
| 414 | * |
| 415 | * This should be used to give an initial value of the receive buffer |
| 416 | * size when the DLC is attached and anytime data is cleared from the |
| 417 | * buffer after that. |
| 418 | */ |
| 419 | int |
| 420 | rfcomm_rcvd_pcb(struct rfcomm_dlc *dlc, size_t space) |
| 421 | { |
| 422 | |
| 423 | KASSERT(dlc != NULL); |
| 424 | |
| 425 | dlc->rd_rxsize = space; |
| 426 | |
| 427 | /* |
| 428 | * if we are using credit based flow control, we may |
| 429 | * want to send some credits.. |
| 430 | */ |
| 431 | if (dlc->rd_state == RFCOMM_DLC_OPEN |
| 432 | && (dlc->rd_session->rs_flags & RFCOMM_SESSION_CFC)) |
| 433 | rfcomm_dlc_start(dlc); |
| 434 | |
| 435 | return 0; |
| 436 | } |
| 437 | |
| 438 | /* |
| 439 | * rfcomm_setopt(dlc, sopt) |
| 440 | * |
| 441 | * set DLC options |
| 442 | */ |
| 443 | int |
| 444 | rfcomm_setopt(struct rfcomm_dlc *dlc, const struct sockopt *sopt) |
| 445 | { |
| 446 | int mode, err = 0; |
| 447 | uint16_t mtu; |
| 448 | |
| 449 | switch (sopt->sopt_name) { |
| 450 | case SO_RFCOMM_MTU: |
| 451 | err = sockopt_get(sopt, &mtu, sizeof(mtu)); |
| 452 | if (err) |
| 453 | break; |
| 454 | |
| 455 | if (mtu < RFCOMM_MTU_MIN || mtu > RFCOMM_MTU_MAX) |
| 456 | err = EINVAL; |
| 457 | else if (dlc->rd_state == RFCOMM_DLC_CLOSED) |
| 458 | dlc->rd_mtu = mtu; |
| 459 | else |
| 460 | err = EBUSY; |
| 461 | |
| 462 | break; |
| 463 | |
| 464 | case SO_RFCOMM_LM: |
| 465 | err = sockopt_getint(sopt, &mode); |
| 466 | if (err) |
| 467 | break; |
| 468 | |
| 469 | mode &= (RFCOMM_LM_SECURE | RFCOMM_LM_ENCRYPT | RFCOMM_LM_AUTH); |
| 470 | |
| 471 | if (mode & RFCOMM_LM_SECURE) |
| 472 | mode |= RFCOMM_LM_ENCRYPT; |
| 473 | |
| 474 | if (mode & RFCOMM_LM_ENCRYPT) |
| 475 | mode |= RFCOMM_LM_AUTH; |
| 476 | |
| 477 | dlc->rd_mode = mode; |
| 478 | |
| 479 | if (dlc->rd_state == RFCOMM_DLC_OPEN) |
| 480 | err = rfcomm_dlc_setmode(dlc); |
| 481 | |
| 482 | break; |
| 483 | |
| 484 | default: |
| 485 | err = ENOPROTOOPT; |
| 486 | break; |
| 487 | } |
| 488 | return err; |
| 489 | } |
| 490 | |
| 491 | /* |
| 492 | * rfcomm_getopt(dlc, sopt) |
| 493 | * |
| 494 | * get DLC options |
| 495 | */ |
| 496 | int |
| 497 | rfcomm_getopt(struct rfcomm_dlc *dlc, struct sockopt *sopt) |
| 498 | { |
| 499 | struct rfcomm_fc_info fc; |
| 500 | |
| 501 | switch (sopt->sopt_name) { |
| 502 | case SO_RFCOMM_MTU: |
| 503 | return sockopt_set(sopt, &dlc->rd_mtu, sizeof(uint16_t)); |
| 504 | |
| 505 | case SO_RFCOMM_FC_INFO: |
| 506 | memset(&fc, 0, sizeof(fc)); |
| 507 | fc.lmodem = dlc->rd_lmodem; |
| 508 | fc.rmodem = dlc->rd_rmodem; |
| 509 | fc.tx_cred = max(dlc->rd_txcred, 0xff); |
| 510 | fc.rx_cred = max(dlc->rd_rxcred, 0xff); |
| 511 | if (dlc->rd_session |
| 512 | && (dlc->rd_session->rs_flags & RFCOMM_SESSION_CFC)) |
| 513 | fc.cfc = 1; |
| 514 | |
| 515 | return sockopt_set(sopt, &fc, sizeof(fc)); |
| 516 | |
| 517 | case SO_RFCOMM_LM: |
| 518 | return sockopt_setint(sopt, dlc->rd_mode); |
| 519 | |
| 520 | default: |
| 521 | break; |
| 522 | } |
| 523 | |
| 524 | return ENOPROTOOPT; |
| 525 | } |
| 526 | |