ieee80211.c revision 1.24
1 /* $NetBSD: ieee80211.c,v 1.24 2004/07/23 05:33:41 mycroft Exp $ */ 2 /*- 3 * Copyright (c) 2001 Atsushi Onoe 4 * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting 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 the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * Alternatively, this software may be distributed under the terms of the 19 * GNU General Public License ("GPL") version 2 as published by the Free 20 * Software Foundation. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 #ifdef __FreeBSD__ 36 __FBSDID("$FreeBSD: src/sys/net80211/ieee80211.c,v 1.11 2004/04/02 20:19:20 sam Exp $"); 37 #else 38 __KERNEL_RCSID(0, "$NetBSD: ieee80211.c,v 1.24 2004/07/23 05:33:41 mycroft Exp $"); 39 #endif 40 41 /* 42 * IEEE 802.11 generic handler 43 */ 44 45 #include "opt_inet.h" 46 #include "bpfilter.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/malloc.h> 52 #include <sys/kernel.h> 53 #include <sys/socket.h> 54 #include <sys/sockio.h> 55 #include <sys/endian.h> 56 #include <sys/errno.h> 57 #ifdef __FreeBSD__ 58 #include <sys/bus.h> 59 #endif 60 #include <sys/proc.h> 61 #include <sys/sysctl.h> 62 63 #ifdef __FreeBSD__ 64 #include <machine/atomic.h> 65 #endif 66 67 #include <net/if.h> 68 #include <net/if_dl.h> 69 #include <net/if_media.h> 70 #include <net/if_arp.h> 71 #ifdef __FreeBSD__ 72 #include <net/ethernet.h> 73 #else 74 #include <net/if_ether.h> 75 #endif 76 #include <net/if_llc.h> 77 78 #include <net80211/ieee80211_var.h> 79 #include <net80211/ieee80211_compat.h> 80 #include <net80211/ieee80211_sysctl.h> 81 82 #include <net/bpf.h> 83 84 #ifdef INET 85 #include <netinet/in.h> 86 #ifdef __FreeBSD__ 87 #include <netinet/if_ether.h> 88 #else 89 #include <net/if_ether.h> 90 #endif 91 #endif 92 93 #ifdef IEEE80211_DEBUG 94 int ieee80211_debug = 0; 95 #ifdef __NetBSD__ 96 static int ieee80211_debug_nodenum; 97 #endif /* __NetBSD__ */ 98 99 #ifdef __FreeBSD__ 100 SYSCTL_INT(_debug, OID_AUTO, ieee80211, CTLFLAG_RW, &ieee80211_debug, 101 0, "IEEE 802.11 media debugging printfs"); 102 #endif 103 #endif 104 105 int ieee80211_inact_max = IEEE80211_INACT_MAX; 106 static int ieee80211_inact_max_nodenum; 107 108 struct ieee80211com_head ieee80211com_head = 109 LIST_HEAD_INITIALIZER(ieee80211com_head); 110 111 static void ieee80211_setbasicrates(struct ieee80211com *); 112 113 #ifdef __NetBSD__ 114 static void sysctl_ieee80211_fill_node(struct ieee80211_node *, 115 struct ieee80211_node_sysctl *, int, struct ieee80211_channel *, int); 116 static struct ieee80211_node *ieee80211_node_walknext( 117 struct ieee80211_node_walk *); 118 static struct ieee80211_node *ieee80211_node_walkfirst( 119 struct ieee80211_node_walk *, u_short); 120 static int sysctl_ieee80211_verify(SYSCTLFN_ARGS); 121 static int sysctl_ieee80211_node(SYSCTLFN_ARGS); 122 #endif /* __NetBSD__ */ 123 124 #define LOGICALLY_EQUAL(x, y) (!(x) == !(y)) 125 126 static const char *ieee80211_phymode_name[] = { 127 "auto", /* IEEE80211_MODE_AUTO */ 128 "11a", /* IEEE80211_MODE_11A */ 129 "11b", /* IEEE80211_MODE_11B */ 130 "11g", /* IEEE80211_MODE_11G */ 131 "FH", /* IEEE80211_MODE_FH */ 132 "turbo", /* IEEE80211_MODE_TURBO */ 133 }; 134 135 void 136 ieee80211_ifattach(struct ifnet *ifp) 137 { 138 struct ieee80211com *ic = (void *)ifp; 139 struct ieee80211_channel *c; 140 int i; 141 142 ether_ifattach(ifp, ic->ic_myaddr); 143 #if NBPFILTER > 0 144 bpfattach2(ifp, DLT_IEEE802_11, 145 sizeof(struct ieee80211_frame_addr4), &ic->ic_rawbpf); 146 #endif 147 ieee80211_crypto_attach(ifp); 148 149 /* 150 * Fill in 802.11 available channel set, mark 151 * all available channels as active, and pick 152 * a default channel if not already specified. 153 */ 154 memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail)); 155 ic->ic_modecaps |= 1<<IEEE80211_MODE_AUTO; 156 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 157 c = &ic->ic_channels[i]; 158 if (c->ic_flags) { 159 /* 160 * Verify driver passed us valid data. 161 */ 162 if (i != ieee80211_chan2ieee(ic, c)) { 163 if_printf(ifp, "bad channel ignored; " 164 "freq %u flags %x number %u\n", 165 c->ic_freq, c->ic_flags, i); 166 c->ic_flags = 0; /* NB: remove */ 167 continue; 168 } 169 setbit(ic->ic_chan_avail, i); 170 /* 171 * Identify mode capabilities. 172 */ 173 if (IEEE80211_IS_CHAN_A(c)) 174 ic->ic_modecaps |= 1<<IEEE80211_MODE_11A; 175 if (IEEE80211_IS_CHAN_B(c)) 176 ic->ic_modecaps |= 1<<IEEE80211_MODE_11B; 177 if (IEEE80211_IS_CHAN_PUREG(c)) 178 ic->ic_modecaps |= 1<<IEEE80211_MODE_11G; 179 if (IEEE80211_IS_CHAN_FHSS(c)) 180 ic->ic_modecaps |= 1<<IEEE80211_MODE_FH; 181 if (IEEE80211_IS_CHAN_T(c)) 182 ic->ic_modecaps |= 1<<IEEE80211_MODE_TURBO; 183 } 184 } 185 /* validate ic->ic_curmode */ 186 if ((ic->ic_modecaps & (1<<ic->ic_curmode)) == 0) 187 ic->ic_curmode = IEEE80211_MODE_AUTO; 188 ic->ic_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */ 189 190 ieee80211_setbasicrates(ic); 191 (void) ieee80211_setmode(ic, ic->ic_curmode); 192 193 if (ic->ic_lintval == 0) 194 ic->ic_lintval = 100; /* default sleep */ 195 ic->ic_bmisstimeout = 7*ic->ic_lintval; /* default 7 beacons */ 196 197 LIST_INSERT_HEAD(&ieee80211com_head, ic, ic_list); 198 ieee80211_node_attach(ifp); 199 ieee80211_proto_attach(ifp); 200 } 201 202 void 203 ieee80211_ifdetach(struct ifnet *ifp) 204 { 205 struct ieee80211com *ic = (void *)ifp; 206 207 ieee80211_proto_detach(ifp); 208 ieee80211_crypto_detach(ifp); 209 ieee80211_node_detach(ifp); 210 LIST_REMOVE(ic, ic_list); 211 #ifdef __FreeBSD__ 212 ifmedia_removeall(&ic->ic_media); 213 #else 214 ifmedia_delete_instance(&ic->ic_media, IFM_INST_ANY); 215 #endif 216 #if NBPFILTER > 0 217 bpfdetach(ifp); 218 #endif 219 ether_ifdetach(ifp); 220 } 221 222 /* 223 * Convert MHz frequency to IEEE channel number. 224 */ 225 u_int 226 ieee80211_mhz2ieee(u_int freq, u_int flags) 227 { 228 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 229 if (freq == 2484) 230 return 14; 231 if (freq < 2484) 232 return (freq - 2407) / 5; 233 else 234 return 15 + ((freq - 2512) / 20); 235 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */ 236 return (freq - 5000) / 5; 237 } else { /* either, guess */ 238 if (freq == 2484) 239 return 14; 240 if (freq < 2484) 241 return (freq - 2407) / 5; 242 if (freq < 5000) 243 return 15 + ((freq - 2512) / 20); 244 return (freq - 5000) / 5; 245 } 246 } 247 248 /* 249 * Convert channel to IEEE channel number. 250 */ 251 u_int 252 ieee80211_chan2ieee(struct ieee80211com *ic, struct ieee80211_channel *c) 253 { 254 if (ic->ic_channels <= c && c <= &ic->ic_channels[IEEE80211_CHAN_MAX]) 255 return c - ic->ic_channels; 256 else if (c == IEEE80211_CHAN_ANYC) 257 return IEEE80211_CHAN_ANY; 258 else if (c != NULL) { 259 if_printf(&ic->ic_if, "invalid channel freq %u flags %x\n", 260 c->ic_freq, c->ic_flags); 261 return 0; /* XXX */ 262 } else { 263 if_printf(&ic->ic_if, "invalid channel (NULL)\n"); 264 return 0; /* XXX */ 265 } 266 } 267 268 /* 269 * Convert IEEE channel number to MHz frequency. 270 */ 271 u_int 272 ieee80211_ieee2mhz(u_int chan, u_int flags) 273 { 274 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */ 275 if (chan == 14) 276 return 2484; 277 if (chan < 14) 278 return 2407 + chan*5; 279 else 280 return 2512 + ((chan-15)*20); 281 } else if (flags & IEEE80211_CHAN_5GHZ) {/* 5Ghz band */ 282 return 5000 + (chan*5); 283 } else { /* either, guess */ 284 if (chan == 14) 285 return 2484; 286 if (chan < 14) /* 0-13 */ 287 return 2407 + chan*5; 288 if (chan < 27) /* 15-26 */ 289 return 2512 + ((chan-15)*20); 290 return 5000 + (chan*5); 291 } 292 } 293 294 /* 295 * Setup the media data structures according to the channel and 296 * rate tables. This must be called by the driver after 297 * ieee80211_attach and before most anything else. 298 */ 299 void 300 ieee80211_media_init(struct ifnet *ifp, 301 ifm_change_cb_t media_change, ifm_stat_cb_t media_stat) 302 { 303 #define ADD(_ic, _s, _o) \ 304 ifmedia_add(&(_ic)->ic_media, \ 305 IFM_MAKEWORD(IFM_IEEE80211, (_s), (_o), 0), 0, NULL) 306 struct ieee80211com *ic = (void *)ifp; 307 struct ifmediareq imr; 308 int i, j, mode, rate, maxrate, mword, mopt, r; 309 struct ieee80211_rateset *rs; 310 struct ieee80211_rateset allrates; 311 312 /* 313 * Do late attach work that must wait for any subclass 314 * (i.e. driver) work such as overriding methods. 315 */ 316 ieee80211_node_lateattach(ifp); 317 318 /* 319 * Fill in media characteristics. 320 */ 321 ifmedia_init(&ic->ic_media, 0, media_change, media_stat); 322 maxrate = 0; 323 memset(&allrates, 0, sizeof(allrates)); 324 for (mode = IEEE80211_MODE_AUTO; mode < IEEE80211_MODE_MAX; mode++) { 325 static const u_int mopts[] = { 326 IFM_AUTO, 327 IFM_IEEE80211_11A, 328 IFM_IEEE80211_11B, 329 IFM_IEEE80211_11G, 330 IFM_IEEE80211_FH, 331 IFM_IEEE80211_11A | IFM_IEEE80211_TURBO, 332 }; 333 if ((ic->ic_modecaps & (1<<mode)) == 0) 334 continue; 335 mopt = mopts[mode]; 336 ADD(ic, IFM_AUTO, mopt); /* e.g. 11a auto */ 337 if (ic->ic_caps & IEEE80211_C_IBSS) 338 ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_ADHOC); 339 if (ic->ic_caps & IEEE80211_C_HOSTAP) 340 ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_HOSTAP); 341 if (ic->ic_caps & IEEE80211_C_AHDEMO) 342 ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 343 if (ic->ic_caps & IEEE80211_C_MONITOR) 344 ADD(ic, IFM_AUTO, mopt | IFM_IEEE80211_MONITOR); 345 if (mode == IEEE80211_MODE_AUTO) 346 continue; 347 if_printf(ifp, "%s rates: ", ieee80211_phymode_name[mode]); 348 rs = &ic->ic_sup_rates[mode]; 349 for (i = 0; i < rs->rs_nrates; i++) { 350 rate = rs->rs_rates[i]; 351 mword = ieee80211_rate2media(ic, rate, mode); 352 if (mword == 0) 353 continue; 354 printf("%s%d%sMbps", (i != 0 ? " " : ""), 355 (rate & IEEE80211_RATE_VAL) / 2, 356 ((rate & 0x1) != 0 ? ".5" : "")); 357 ADD(ic, mword, mopt); 358 if (ic->ic_caps & IEEE80211_C_IBSS) 359 ADD(ic, mword, mopt | IFM_IEEE80211_ADHOC); 360 if (ic->ic_caps & IEEE80211_C_HOSTAP) 361 ADD(ic, mword, mopt | IFM_IEEE80211_HOSTAP); 362 if (ic->ic_caps & IEEE80211_C_AHDEMO) 363 ADD(ic, mword, mopt | IFM_IEEE80211_ADHOC | IFM_FLAG0); 364 if (ic->ic_caps & IEEE80211_C_MONITOR) 365 ADD(ic, mword, mopt | IFM_IEEE80211_MONITOR); 366 /* 367 * Add rate to the collection of all rates. 368 */ 369 r = rate & IEEE80211_RATE_VAL; 370 for (j = 0; j < allrates.rs_nrates; j++) 371 if (allrates.rs_rates[j] == r) 372 break; 373 if (j == allrates.rs_nrates) { 374 /* unique, add to the set */ 375 allrates.rs_rates[j] = r; 376 allrates.rs_nrates++; 377 } 378 rate = (rate & IEEE80211_RATE_VAL) / 2; 379 if (rate > maxrate) 380 maxrate = rate; 381 } 382 printf("\n"); 383 } 384 for (i = 0; i < allrates.rs_nrates; i++) { 385 mword = ieee80211_rate2media(ic, allrates.rs_rates[i], 386 IEEE80211_MODE_AUTO); 387 if (mword == 0) 388 continue; 389 mword = IFM_SUBTYPE(mword); /* remove media options */ 390 ADD(ic, mword, 0); 391 if (ic->ic_caps & IEEE80211_C_IBSS) 392 ADD(ic, mword, IFM_IEEE80211_ADHOC); 393 if (ic->ic_caps & IEEE80211_C_HOSTAP) 394 ADD(ic, mword, IFM_IEEE80211_HOSTAP); 395 if (ic->ic_caps & IEEE80211_C_AHDEMO) 396 ADD(ic, mword, IFM_IEEE80211_ADHOC | IFM_FLAG0); 397 if (ic->ic_caps & IEEE80211_C_MONITOR) 398 ADD(ic, mword, IFM_IEEE80211_MONITOR); 399 } 400 ieee80211_media_status(ifp, &imr); 401 ifmedia_set(&ic->ic_media, imr.ifm_active); 402 403 if (maxrate) 404 ifp->if_baudrate = IF_Mbps(maxrate); 405 406 if (ic->ic_max_aid == 0) 407 ic->ic_max_aid = IEEE80211_AID_MAX; 408 409 #undef ADD 410 } 411 412 static int 413 findrate(struct ieee80211com *ic, enum ieee80211_phymode mode, int rate) 414 { 415 #define IEEERATE(_ic,_m,_i) \ 416 ((_ic)->ic_sup_rates[_m].rs_rates[_i] & IEEE80211_RATE_VAL) 417 int i, nrates = ic->ic_sup_rates[mode].rs_nrates; 418 for (i = 0; i < nrates; i++) 419 if (IEEERATE(ic, mode, i) == rate) 420 return i; 421 return -1; 422 #undef IEEERATE 423 } 424 425 /* 426 * Handle a media change request. 427 */ 428 int 429 ieee80211_media_change(struct ifnet *ifp) 430 { 431 struct ieee80211com *ic = (void *)ifp; 432 struct ifmedia_entry *ime; 433 enum ieee80211_opmode newopmode; 434 enum ieee80211_phymode newphymode; 435 int i, j, newrate, error = 0; 436 437 ime = ic->ic_media.ifm_cur; 438 /* 439 * First, identify the phy mode. 440 */ 441 switch (IFM_MODE(ime->ifm_media)) { 442 case IFM_IEEE80211_11A: 443 newphymode = IEEE80211_MODE_11A; 444 break; 445 case IFM_IEEE80211_11B: 446 newphymode = IEEE80211_MODE_11B; 447 break; 448 case IFM_IEEE80211_11G: 449 newphymode = IEEE80211_MODE_11G; 450 break; 451 case IFM_IEEE80211_FH: 452 newphymode = IEEE80211_MODE_FH; 453 break; 454 case IFM_AUTO: 455 newphymode = IEEE80211_MODE_AUTO; 456 break; 457 default: 458 return EINVAL; 459 } 460 /* 461 * Turbo mode is an ``option''. Eventually it 462 * needs to be applied to 11g too. 463 */ 464 if (ime->ifm_media & IFM_IEEE80211_TURBO) { 465 if (newphymode != IEEE80211_MODE_11A) 466 return EINVAL; 467 newphymode = IEEE80211_MODE_TURBO; 468 } 469 /* 470 * Validate requested mode is available. 471 */ 472 if ((ic->ic_modecaps & (1<<newphymode)) == 0) 473 return EINVAL; 474 475 /* 476 * Next, the fixed/variable rate. 477 */ 478 i = -1; 479 if (IFM_SUBTYPE(ime->ifm_media) != IFM_AUTO) { 480 /* 481 * Convert media subtype to rate. 482 */ 483 newrate = ieee80211_media2rate(ime->ifm_media); 484 if (newrate == 0) 485 return EINVAL; 486 /* 487 * Check the rate table for the specified/current phy. 488 */ 489 if (newphymode == IEEE80211_MODE_AUTO) { 490 /* 491 * In autoselect mode search for the rate. 492 */ 493 for (j = IEEE80211_MODE_11A; 494 j < IEEE80211_MODE_MAX; j++) { 495 if ((ic->ic_modecaps & (1<<j)) == 0) 496 continue; 497 i = findrate(ic, j, newrate); 498 if (i != -1) { 499 /* lock mode too */ 500 newphymode = j; 501 break; 502 } 503 } 504 } else { 505 i = findrate(ic, newphymode, newrate); 506 } 507 if (i == -1) /* mode/rate mismatch */ 508 return EINVAL; 509 } 510 /* NB: defer rate setting to later */ 511 512 /* 513 * Deduce new operating mode but don't install it just yet. 514 */ 515 if ((ime->ifm_media & (IFM_IEEE80211_ADHOC|IFM_FLAG0)) == 516 (IFM_IEEE80211_ADHOC|IFM_FLAG0)) 517 newopmode = IEEE80211_M_AHDEMO; 518 else if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 519 newopmode = IEEE80211_M_HOSTAP; 520 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) 521 newopmode = IEEE80211_M_IBSS; 522 else if (ime->ifm_media & IFM_IEEE80211_MONITOR) 523 newopmode = IEEE80211_M_MONITOR; 524 else 525 newopmode = IEEE80211_M_STA; 526 527 /* 528 * Autoselect doesn't make sense when operating as an AP. 529 * If no phy mode has been selected, pick one and lock it 530 * down so rate tables can be used in forming beacon frames 531 * and the like. 532 */ 533 if (newopmode == IEEE80211_M_HOSTAP && 534 newphymode == IEEE80211_MODE_AUTO) { 535 for (j = IEEE80211_MODE_11A; j < IEEE80211_MODE_MAX; j++) 536 if (ic->ic_modecaps & (1<<j)) { 537 newphymode = j; 538 break; 539 } 540 } 541 542 /* 543 * Handle phy mode change. 544 */ 545 if (ic->ic_curmode != newphymode) { /* change phy mode */ 546 error = ieee80211_setmode(ic, newphymode); 547 if (error != 0) 548 return error; 549 error = ENETRESET; 550 } 551 552 /* 553 * Committed to changes, install the rate setting. 554 */ 555 if (ic->ic_fixed_rate != i) { 556 ic->ic_fixed_rate = i; /* set fixed tx rate */ 557 error = ENETRESET; 558 } 559 560 /* 561 * Handle operating mode change. 562 */ 563 if (ic->ic_opmode != newopmode) { 564 ic->ic_opmode = newopmode; 565 switch (newopmode) { 566 case IEEE80211_M_AHDEMO: 567 case IEEE80211_M_HOSTAP: 568 case IEEE80211_M_STA: 569 case IEEE80211_M_MONITOR: 570 ic->ic_flags &= ~IEEE80211_F_IBSSON; 571 break; 572 case IEEE80211_M_IBSS: 573 ic->ic_flags |= IEEE80211_F_IBSSON; 574 break; 575 } 576 error = ENETRESET; 577 } 578 #ifdef notdef 579 if (error == 0) 580 ifp->if_baudrate = ifmedia_baudrate(ime->ifm_media); 581 #endif 582 return error; 583 } 584 585 void 586 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 587 { 588 struct ieee80211com *ic = (void *)ifp; 589 struct ieee80211_node *ni = NULL; 590 591 imr->ifm_status = IFM_AVALID; 592 imr->ifm_active = IFM_IEEE80211; 593 if (ic->ic_state == IEEE80211_S_RUN) 594 imr->ifm_status |= IFM_ACTIVE; 595 imr->ifm_active |= IFM_AUTO; 596 switch (ic->ic_opmode) { 597 case IEEE80211_M_STA: 598 ni = ic->ic_bss; 599 /* calculate rate subtype */ 600 imr->ifm_active |= ieee80211_rate2media(ic, 601 ni->ni_rates.rs_rates[ni->ni_txrate], ic->ic_curmode); 602 break; 603 case IEEE80211_M_IBSS: 604 imr->ifm_active |= IFM_IEEE80211_ADHOC; 605 break; 606 case IEEE80211_M_AHDEMO: 607 /* should not come here */ 608 break; 609 case IEEE80211_M_HOSTAP: 610 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 611 break; 612 case IEEE80211_M_MONITOR: 613 imr->ifm_active |= IFM_IEEE80211_MONITOR; 614 break; 615 } 616 switch (ic->ic_curmode) { 617 case IEEE80211_MODE_11A: 618 imr->ifm_active |= IFM_IEEE80211_11A; 619 break; 620 case IEEE80211_MODE_11B: 621 imr->ifm_active |= IFM_IEEE80211_11B; 622 break; 623 case IEEE80211_MODE_11G: 624 imr->ifm_active |= IFM_IEEE80211_11G; 625 break; 626 case IEEE80211_MODE_FH: 627 imr->ifm_active |= IFM_IEEE80211_FH; 628 break; 629 case IEEE80211_MODE_TURBO: 630 imr->ifm_active |= IFM_IEEE80211_11A 631 | IFM_IEEE80211_TURBO; 632 break; 633 } 634 } 635 636 void 637 ieee80211_watchdog(struct ifnet *ifp) 638 { 639 struct ieee80211com *ic = (void *)ifp; 640 641 if (ic->ic_mgt_timer && --ic->ic_mgt_timer == 0) 642 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 643 if (ic->ic_inact_timer && --ic->ic_inact_timer == 0) 644 ieee80211_timeout_nodes(ic); 645 646 if (ic->ic_mgt_timer != 0 || ic->ic_inact_timer != 0) 647 ifp->if_timer = 1; 648 } 649 650 /* 651 * Mark the basic rates for the 11g rate table based on the 652 * operating mode. For real 11g we mark all the 11b rates 653 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 654 * 11b rates. There's also a pseudo 11a-mode used to mark only 655 * the basic OFDM rates. 656 */ 657 static void 658 ieee80211_setbasicrates(struct ieee80211com *ic) 659 { 660 static const struct ieee80211_rateset basic[] = { 661 { 0 }, /* IEEE80211_MODE_AUTO */ 662 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */ 663 { 2, { 2, 4 } }, /* IEEE80211_MODE_11B */ 664 { 7, { 2, 4, 11, 22, 12, 24, 48 } },/* IEEE80211_MODE_11G */ 665 { 2, { 2, 4 } }, /* IEEE80211_MODE_FH */ 666 { 0 }, /* IEEE80211_MODE_TURBO */ 667 }; 668 enum ieee80211_phymode mode; 669 struct ieee80211_rateset *rs; 670 int i, j; 671 672 for (mode = 0; mode < IEEE80211_MODE_MAX; mode++) { 673 rs = &ic->ic_sup_rates[mode]; 674 for (i = 0; i < rs->rs_nrates; i++) { 675 rs->rs_rates[i] &= IEEE80211_RATE_VAL; 676 for (j = 0; j < basic[mode].rs_nrates; j++) 677 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 678 rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 679 break; 680 } 681 } 682 } 683 } 684 685 /* 686 * Set the current phy mode and recalculate the active channel 687 * set based on the available channels for this mode. Also 688 * select a new default/current channel if the current one is 689 * inappropriate for this mode. 690 */ 691 int 692 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 693 { 694 #define N(a) (sizeof(a) / sizeof(a[0])) 695 static const u_int chanflags[] = { 696 0, /* IEEE80211_MODE_AUTO */ 697 IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */ 698 IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */ 699 IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */ 700 IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */ 701 IEEE80211_CHAN_T, /* IEEE80211_MODE_TURBO */ 702 }; 703 struct ieee80211_channel *c; 704 u_int modeflags; 705 int i; 706 707 /* validate new mode */ 708 if ((ic->ic_modecaps & (1<<mode)) == 0) { 709 IEEE80211_DPRINTF(("%s: mode %u not supported (caps 0x%x)\n", 710 __func__, mode, ic->ic_modecaps)); 711 return EINVAL; 712 } 713 714 /* 715 * Verify at least one channel is present in the available 716 * channel list before committing to the new mode. 717 */ 718 IASSERT(mode < N(chanflags), ("Unexpected mode %u", mode)); 719 modeflags = chanflags[mode]; 720 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 721 c = &ic->ic_channels[i]; 722 if (mode == IEEE80211_MODE_AUTO) { 723 /* ignore turbo channels for autoselect */ 724 if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 725 break; 726 } else { 727 if ((c->ic_flags & modeflags) == modeflags) 728 break; 729 } 730 } 731 if (i > IEEE80211_CHAN_MAX) { 732 IEEE80211_DPRINTF(("%s: no channels found for mode %u\n", 733 __func__, mode)); 734 return EINVAL; 735 } 736 737 /* 738 * Calculate the active channel set. 739 */ 740 memset(ic->ic_chan_active, 0, sizeof(ic->ic_chan_active)); 741 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 742 c = &ic->ic_channels[i]; 743 if (mode == IEEE80211_MODE_AUTO) { 744 /* take anything but pure turbo channels */ 745 if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 746 setbit(ic->ic_chan_active, i); 747 } else { 748 if ((c->ic_flags & modeflags) == modeflags) 749 setbit(ic->ic_chan_active, i); 750 } 751 } 752 /* 753 * If no current/default channel is setup or the current 754 * channel is wrong for the mode then pick the first 755 * available channel from the active list. This is likely 756 * not the right one. 757 */ 758 if (ic->ic_ibss_chan == NULL || 759 isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ic->ic_ibss_chan))) { 760 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) 761 if (isset(ic->ic_chan_active, i)) { 762 ic->ic_ibss_chan = &ic->ic_channels[i]; 763 break; 764 } 765 IASSERT(ic->ic_ibss_chan != NULL && 766 isset(ic->ic_chan_active, 767 ieee80211_chan2ieee(ic, ic->ic_ibss_chan)), 768 ("Bad IBSS channel %u\n", 769 ieee80211_chan2ieee(ic, ic->ic_ibss_chan))); 770 } 771 772 /* 773 * Set/reset state flags that influence beacon contents, etc. 774 * 775 * XXX what if we have stations already associated??? 776 * XXX probably not right for autoselect? 777 */ 778 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) 779 ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 780 if (mode == IEEE80211_MODE_11G) { 781 if (ic->ic_caps & IEEE80211_C_SHSLOT) 782 ic->ic_flags |= IEEE80211_F_SHSLOT; 783 } else 784 ic->ic_flags &= ~IEEE80211_F_SHSLOT; 785 786 ic->ic_curmode = mode; 787 return 0; 788 #undef N 789 } 790 791 /* 792 * Return the phy mode for with the specified channel so the 793 * caller can select a rate set. This is problematic and the 794 * work here assumes how things work elsewhere in this code. 795 * 796 * XXX never returns turbo modes -dcy 797 */ 798 enum ieee80211_phymode 799 ieee80211_chan2mode(struct ieee80211com *ic, struct ieee80211_channel *chan) 800 { 801 /* 802 * NB: this assumes the channel would not be supplied to us 803 * unless it was already compatible with the current mode. 804 */ 805 if (ic->ic_curmode != IEEE80211_MODE_AUTO || 806 chan == IEEE80211_CHAN_ANYC) 807 return ic->ic_curmode; 808 /* 809 * In autoselect mode; deduce a mode based on the channel 810 * characteristics. We assume that turbo-only channels 811 * are not considered when the channel set is constructed. 812 */ 813 if (IEEE80211_IS_CHAN_5GHZ(chan)) 814 return IEEE80211_MODE_11A; 815 else if (IEEE80211_IS_CHAN_FHSS(chan)) 816 return IEEE80211_MODE_FH; 817 else if (chan->ic_flags & (IEEE80211_CHAN_OFDM|IEEE80211_CHAN_DYN)) 818 return IEEE80211_MODE_11G; 819 else 820 return IEEE80211_MODE_11B; 821 } 822 823 /* 824 * convert IEEE80211 rate value to ifmedia subtype. 825 * ieee80211 rate is in unit of 0.5Mbps. 826 */ 827 int 828 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 829 { 830 #define N(a) (sizeof(a) / sizeof(a[0])) 831 static const struct { 832 u_int m; /* rate + mode */ 833 u_int r; /* if_media rate */ 834 } rates[] = { 835 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 836 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 837 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 838 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 839 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 840 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 841 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 842 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 843 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 844 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 845 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 846 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 847 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 848 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 849 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 850 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 851 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 852 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 853 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 854 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 855 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 856 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 857 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 858 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 859 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 860 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 861 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 862 /* NB: OFDM72 doesn't realy exist so we don't handle it */ 863 }; 864 u_int mask, i; 865 866 mask = rate & IEEE80211_RATE_VAL; 867 switch (mode) { 868 case IEEE80211_MODE_11A: 869 case IEEE80211_MODE_TURBO: 870 mask |= IFM_IEEE80211_11A; 871 break; 872 case IEEE80211_MODE_11B: 873 mask |= IFM_IEEE80211_11B; 874 break; 875 case IEEE80211_MODE_FH: 876 mask |= IFM_IEEE80211_FH; 877 break; 878 case IEEE80211_MODE_AUTO: 879 /* NB: ic may be NULL for some drivers */ 880 if (ic && ic->ic_phytype == IEEE80211_T_FH) { 881 mask |= IFM_IEEE80211_FH; 882 break; 883 } 884 /* NB: hack, 11g matches both 11b+11a rates */ 885 /* fall thru... */ 886 case IEEE80211_MODE_11G: 887 mask |= IFM_IEEE80211_11G; 888 break; 889 } 890 for (i = 0; i < N(rates); i++) 891 if (rates[i].m == mask) 892 return rates[i].r; 893 return IFM_AUTO; 894 #undef N 895 } 896 897 int 898 ieee80211_media2rate(int mword) 899 { 900 #define N(a) (sizeof(a) / sizeof(a[0])) 901 int i; 902 static const struct { 903 int subtype; 904 int rate; 905 } ieeerates[] = { 906 { IFM_AUTO, -1 }, 907 { IFM_MANUAL, 0 }, 908 { IFM_NONE, 0 }, 909 { IFM_IEEE80211_FH1, 2 }, 910 { IFM_IEEE80211_FH2, 4 }, 911 { IFM_IEEE80211_DS1, 2 }, 912 { IFM_IEEE80211_DS2, 4 }, 913 { IFM_IEEE80211_DS5, 11 }, 914 { IFM_IEEE80211_DS11, 22 }, 915 { IFM_IEEE80211_DS22, 44 }, 916 { IFM_IEEE80211_OFDM6, 12 }, 917 { IFM_IEEE80211_OFDM9, 18 }, 918 { IFM_IEEE80211_OFDM12, 24 }, 919 { IFM_IEEE80211_OFDM18, 36 }, 920 { IFM_IEEE80211_OFDM24, 48 }, 921 { IFM_IEEE80211_OFDM36, 72 }, 922 { IFM_IEEE80211_OFDM48, 96 }, 923 { IFM_IEEE80211_OFDM54, 108 }, 924 { IFM_IEEE80211_OFDM72, 144 }, 925 }; 926 for (i = 0; i < N(ieeerates); i++) { 927 if (ieeerates[i].subtype == IFM_SUBTYPE(mword)) 928 return ieeerates[i].rate; 929 } 930 return 0; 931 #undef N 932 } 933 934 #ifdef __NetBSD__ 935 /* TBD factor with sysctl_ath_verify. */ 936 static int 937 sysctl_ieee80211_verify(SYSCTLFN_ARGS) 938 { 939 int error, t; 940 struct sysctlnode node; 941 942 node = *rnode; 943 t = *(int*)rnode->sysctl_data; 944 node.sysctl_data = &t; 945 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 946 if (error || newp == NULL) 947 return (error); 948 949 IEEE80211_DPRINTF(("%s: t = %d, nodenum = %d, rnodenum = %d\n", 950 __func__, t, node.sysctl_num, rnode->sysctl_num)); 951 952 if (node.sysctl_num == ieee80211_inact_max_nodenum) { 953 if (t < 1) 954 return (EINVAL); 955 t = roundup(t, IEEE80211_INACT_WAIT) / IEEE80211_INACT_WAIT; 956 #ifdef IEEE80211_DEBUG 957 } else if (node.sysctl_num == ieee80211_debug_nodenum) { 958 if (t < 0 || t > 2) 959 return (EINVAL); 960 #endif /* IEEE80211_DEBUG */ 961 } else 962 return (EINVAL); 963 964 *(int*)rnode->sysctl_data = t; 965 966 return (0); 967 } 968 969 /* 970 * Pointers for testing: 971 * 972 * If there are no interfaces, or else no 802.11 interfaces, 973 * ieee80211_node_walkfirst must return NULL. 974 * 975 * If there is any single 802.11 interface, ieee80211_node_walkfirst 976 * must not return NULL. 977 */ 978 static struct ieee80211_node * 979 ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, 980 u_short if_index) 981 { 982 struct ieee80211com *ic; 983 (void)memset(nw, 0, sizeof(*nw)); 984 985 nw->nw_ifindex = if_index; 986 987 LIST_FOREACH(ic, &ieee80211com_head, ic_list) { 988 IEEE80211_DPRINTF(("%s: visiting ic %p\n", __func__, ic)); 989 if (if_index != 0 && ic->ic_if.if_index != if_index) { 990 IEEE80211_DPRINTF(("%s: wrong ifindex, " 991 "skipping ic %p\n", __func__, ic)); 992 continue; 993 } 994 nw->nw_ic = ic; 995 nw->nw_ni = ic->ic_bss; 996 break; 997 } 998 IEEE80211_DPRINTF(("%s: ic %p ni %p\n", __func__, nw->nw_ic, 999 nw->nw_ni)); 1000 1001 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 1002 1003 return nw->nw_ni; 1004 } 1005 1006 static struct ieee80211_node * 1007 ieee80211_node_walknext(struct ieee80211_node_walk *nw) 1008 { 1009 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 1010 1011 if (nw->nw_ic == NULL && nw->nw_ni == NULL) 1012 return NULL; 1013 1014 if (nw->nw_ni == nw->nw_ic->ic_bss) 1015 nw->nw_ni = TAILQ_FIRST(&nw->nw_ic->ic_node); 1016 else 1017 nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); 1018 1019 if (nw->nw_ni == NULL) { 1020 if (nw->nw_ifindex != 0) 1021 return NULL; 1022 1023 nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); 1024 if (nw->nw_ic == NULL) 1025 return NULL; 1026 1027 nw->nw_ni = nw->nw_ic->ic_bss; 1028 } 1029 1030 IEEE80211_DPRINTF(("%s: ic %p bss %p ni %p\n", __func__, nw->nw_ic, 1031 nw->nw_ic->ic_bss, nw->nw_ni)); 1032 1033 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 1034 1035 return nw->nw_ni; 1036 } 1037 1038 static void 1039 sysctl_ieee80211_fill_node(struct ieee80211_node *ni, 1040 struct ieee80211_node_sysctl *ns, int ifindex, 1041 struct ieee80211_channel *chan0, int is_bss) 1042 { 1043 ns->ns_ifindex = ifindex; 1044 ns->ns_capinfo = ni->ni_capinfo; 1045 ns->ns_flags = (is_bss) ? IEEE80211_NODE_SYSCTL_F_BSS : 0; 1046 (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); 1047 (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); 1048 if (ni->ni_chan != IEEE80211_CHAN_ANYC) { 1049 ns->ns_freq = ni->ni_chan->ic_freq; 1050 ns->ns_chanflags = ni->ni_chan->ic_flags; 1051 ns->ns_chanidx = ni->ni_chan - chan0; 1052 } else { 1053 ns->ns_freq = ns->ns_chanflags = 0; 1054 ns->ns_chanidx = 0; 1055 } 1056 ns->ns_rssi = ni->ni_rssi; 1057 ns->ns_esslen = ni->ni_esslen; 1058 (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); 1059 ns->ns_pwrsave = ni->ni_pwrsave; 1060 ns->ns_erp = ni->ni_erp; 1061 ns->ns_associd = ni->ni_associd; 1062 ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; 1063 ns->ns_rstamp = ni->ni_rstamp; 1064 ns->ns_rates = ni->ni_rates; 1065 ns->ns_txrate = ni->ni_txrate; 1066 ns->ns_intval = ni->ni_intval; 1067 (void)memcpy(ns->ns_tstamp, ni->ni_tstamp, sizeof(ns->ns_tstamp)); 1068 ns->ns_txseq = ni->ni_txseq; 1069 ns->ns_rxseq = ni->ni_rxseq; 1070 ns->ns_fhdwell = ni->ni_fhdwell; 1071 ns->ns_fhindex = ni->ni_fhindex; 1072 ns->ns_fails = ni->ni_fails; 1073 } 1074 1075 /* Between two examinations of the sysctl tree, I expect each 1076 * interface to add no more than 5 nodes. 1077 */ 1078 #define IEEE80211_SYSCTL_NODE_GROWTH 5 1079 1080 static int 1081 sysctl_ieee80211_node(SYSCTLFN_ARGS) 1082 { 1083 struct ieee80211_node_walk nw; 1084 struct ieee80211_node *ni; 1085 struct ieee80211_node_sysctl ns; 1086 char *dp; 1087 u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; 1088 size_t len, needed, eltsize, out_size; 1089 int error, s, nelt; 1090 1091 if (namelen == 1 && name[0] == CTL_QUERY) 1092 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1093 1094 if (namelen != IEEE80211_SYSCTL_NODENAMELEN) 1095 return (EINVAL); 1096 1097 /* ifindex.op.arg.header-type.eltsize.nelt */ 1098 dp = oldp; 1099 len = (oldp != NULL) ? *oldlenp : 0; 1100 ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; 1101 op = name[IEEE80211_SYSCTL_NODENAME_OP]; 1102 arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; 1103 hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; 1104 eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; 1105 nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; 1106 out_size = MIN(sizeof(ns), eltsize); 1107 1108 IEEE80211_DPRINTF(("%s: ifindex %u op %u arg %u hdr_type %u eltsize %u " 1109 "nelt %d out_size %u\n", __func__, ifindex, op, arg, hdr_type, 1110 eltsize, nelt, out_size)); 1111 1112 if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || 1113 hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) 1114 return (EINVAL); 1115 1116 error = 0; 1117 needed = 0; 1118 ifcount = 0; 1119 last_ifindex = 0; 1120 1121 s = splnet(); 1122 1123 for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; 1124 ni = ieee80211_node_walknext(&nw)) { 1125 struct ieee80211com *ic; 1126 1127 ic = nw.nw_ic; 1128 cur_ifindex = ic->ic_if.if_index; 1129 1130 IEEE80211_DPRINTF(("%s: visit ic %p idx %u\n", __func__, ic, 1131 cur_ifindex)); 1132 1133 if (cur_ifindex != last_ifindex) { 1134 ifcount++; 1135 last_ifindex = cur_ifindex; 1136 } 1137 1138 IEEE80211_DPRINTF(("%s: ni %p dp %p len %u nelt %d\n", 1139 __func__, ni, dp, len, nelt)); 1140 1141 if (nelt <= 0) 1142 continue; 1143 1144 if (len >= eltsize) { 1145 sysctl_ieee80211_fill_node(ni, &ns, cur_ifindex, 1146 &ic->ic_channels[0], ni == ic->ic_bss); 1147 error = copyout(&ns, dp, out_size); 1148 if (error) 1149 goto cleanup; 1150 dp += eltsize; 1151 len -= eltsize; 1152 } 1153 needed += eltsize; 1154 if (nelt != INT_MAX) 1155 nelt--; 1156 IEEE80211_DPRINTF(("%s: needed %u\n", __func__, needed)); 1157 } 1158 IEEE80211_DPRINTF(("%s: %u interfaces\n", __func__, ifcount)); 1159 cleanup: 1160 splx(s); 1161 1162 *oldlenp = needed; 1163 if (oldp == NULL) 1164 *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; 1165 1166 return (error); 1167 } 1168 1169 /* 1170 * Setup sysctl(3) MIB, net.ieee80211.* 1171 * 1172 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 1173 */ 1174 SYSCTL_SETUP(sysctl_ieee80211, "sysctl ieee80211 subtree setup") 1175 { 1176 int rc; 1177 struct sysctlnode *cnode, *rnode; 1178 1179 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 1180 CTLFLAG_PERMANENT, CTLTYPE_NODE, "net", NULL, 1181 NULL, 0, NULL, 0, CTL_NET, CTL_EOL)) != 0) 1182 goto err; 1183 1184 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 1185 CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", 1186 "link-layer statistics and controls", 1187 NULL, 0, NULL, 0, PF_LINK, CTL_EOL)) != 0) 1188 goto err; 1189 1190 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 1191 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", 1192 "IEEE 802.11 WLAN statistics and controls", 1193 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 1194 goto err; 1195 1196 if ((rc = sysctl_createv(clog, 0, &rnode, NULL, 1197 CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", 1198 sysctl_ieee80211_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 1199 goto err; 1200 1201 #ifdef IEEE80211_DEBUG 1202 1203 /* control debugging printfs */ 1204 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 1205 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 1206 "debug", SYSCTL_DESCR("Enable IEEE 802.11 debugging output"), 1207 sysctl_ieee80211_verify, 0, &ieee80211_debug, 0, 1208 CTL_CREATE, CTL_EOL)) != 0) 1209 goto err; 1210 1211 ieee80211_debug_nodenum = cnode->sysctl_num; 1212 1213 #endif /* IEEE80211_DEBUG */ 1214 1215 /* control inactivity timer */ 1216 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 1217 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 1218 "maxinact", SYSCTL_DESCR("Station inactivity timeout"), 1219 sysctl_ieee80211_verify, 0, &ieee80211_inact_max, 1220 0, CTL_CREATE, CTL_EOL)) != 0) 1221 goto err; 1222 1223 ieee80211_inact_max_nodenum = cnode->sysctl_num; 1224 1225 return; 1226 err: 1227 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 1228 } 1229 #endif /* __NetBSD__ */ 1230 1231 #ifdef __FreeBSD__ 1232 /* 1233 * Module glue. 1234 * 1235 * NB: the module name is "wlan" for compatibility with NetBSD. 1236 */ 1237 1238 static int 1239 ieee80211_modevent(module_t mod, int type, void *unused) 1240 { 1241 switch (type) { 1242 case MOD_LOAD: 1243 if (bootverbose) 1244 printf("wlan: <802.11 Link Layer>\n"); 1245 return 0; 1246 case MOD_UNLOAD: 1247 return 0; 1248 } 1249 return EINVAL; 1250 } 1251 1252 static moduledata_t ieee80211_mod = { 1253 "wlan", 1254 ieee80211_modevent, 1255 0 1256 }; 1257 DECLARE_MODULE(wlan, ieee80211_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 1258 MODULE_VERSION(wlan, 1); 1259 MODULE_DEPEND(wlan, rc4, 1, 1, 1); 1260 MODULE_DEPEND(wlan, ether, 1, 1, 1); 1261 #endif 1262
Indexes created Thu Sep 25 06:09:39 GMT 2025