ieee80211.c revision 1.33
1 /* $NetBSD: ieee80211.c,v 1.33 2005/02/26 22:45:09 perry 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 1.33 2005/02/26 22:45:09 perry 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_cache_size = IEEE80211_CACHE_SIZE; 106 static int ieee80211_cache_size_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(ic); 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(ic); 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(ic); 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 #ifndef __linux__ 403 if (maxrate) 404 ifp->if_baudrate = IF_Mbps(maxrate); 405 #endif 406 #undef ADD 407 } 408 409 static int 410 findrate(struct ieee80211com *ic, enum ieee80211_phymode mode, int rate) 411 { 412 #define IEEERATE(_ic,_m,_i) \ 413 ((_ic)->ic_sup_rates[_m].rs_rates[_i] & IEEE80211_RATE_VAL) 414 int i, nrates = ic->ic_sup_rates[mode].rs_nrates; 415 for (i = 0; i < nrates; i++) 416 if (IEEERATE(ic, mode, i) == rate) 417 return i; 418 return -1; 419 #undef IEEERATE 420 } 421 422 /* 423 * Handle a media change request. 424 */ 425 int 426 ieee80211_media_change(struct ifnet *ifp) 427 { 428 struct ieee80211com *ic = (void *)ifp; 429 struct ifmedia_entry *ime; 430 enum ieee80211_opmode newopmode; 431 enum ieee80211_phymode newphymode; 432 int i, j, newrate, error = 0; 433 434 ime = ic->ic_media.ifm_cur; 435 /* 436 * First, identify the phy mode. 437 */ 438 switch (IFM_MODE(ime->ifm_media)) { 439 case IFM_IEEE80211_11A: 440 newphymode = IEEE80211_MODE_11A; 441 break; 442 case IFM_IEEE80211_11B: 443 newphymode = IEEE80211_MODE_11B; 444 break; 445 case IFM_IEEE80211_11G: 446 newphymode = IEEE80211_MODE_11G; 447 break; 448 case IFM_IEEE80211_FH: 449 newphymode = IEEE80211_MODE_FH; 450 break; 451 case IFM_AUTO: 452 newphymode = IEEE80211_MODE_AUTO; 453 break; 454 default: 455 return EINVAL; 456 } 457 /* 458 * Turbo mode is an ``option''. Eventually it 459 * needs to be applied to 11g too. 460 */ 461 if (ime->ifm_media & IFM_IEEE80211_TURBO) { 462 if (newphymode != IEEE80211_MODE_11A) 463 return EINVAL; 464 newphymode = IEEE80211_MODE_TURBO; 465 } 466 /* 467 * Validate requested mode is available. 468 */ 469 if ((ic->ic_modecaps & (1<<newphymode)) == 0) 470 return EINVAL; 471 472 /* 473 * Next, the fixed/variable rate. 474 */ 475 i = -1; 476 if (IFM_SUBTYPE(ime->ifm_media) != IFM_AUTO) { 477 /* 478 * Convert media subtype to rate. 479 */ 480 newrate = ieee80211_media2rate(ime->ifm_media); 481 if (newrate == 0) 482 return EINVAL; 483 /* 484 * Check the rate table for the specified/current phy. 485 */ 486 if (newphymode == IEEE80211_MODE_AUTO) { 487 /* 488 * In autoselect mode search for the rate. 489 */ 490 for (j = IEEE80211_MODE_11A; 491 j < IEEE80211_MODE_MAX; j++) { 492 if ((ic->ic_modecaps & (1<<j)) == 0) 493 continue; 494 i = findrate(ic, j, newrate); 495 if (i != -1) { 496 /* lock mode too */ 497 newphymode = j; 498 break; 499 } 500 } 501 } else { 502 i = findrate(ic, newphymode, newrate); 503 } 504 if (i == -1) /* mode/rate mismatch */ 505 return EINVAL; 506 } 507 /* NB: defer rate setting to later */ 508 509 /* 510 * Deduce new operating mode but don't install it just yet. 511 */ 512 if ((ime->ifm_media & (IFM_IEEE80211_ADHOC|IFM_FLAG0)) == 513 (IFM_IEEE80211_ADHOC|IFM_FLAG0)) 514 newopmode = IEEE80211_M_AHDEMO; 515 else if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 516 newopmode = IEEE80211_M_HOSTAP; 517 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) 518 newopmode = IEEE80211_M_IBSS; 519 else if (ime->ifm_media & IFM_IEEE80211_MONITOR) 520 newopmode = IEEE80211_M_MONITOR; 521 else 522 newopmode = IEEE80211_M_STA; 523 524 /* 525 * Autoselect doesn't make sense when operating as an AP. 526 * If no phy mode has been selected, pick one and lock it 527 * down so rate tables can be used in forming beacon frames 528 * and the like. 529 */ 530 if (newopmode == IEEE80211_M_HOSTAP && 531 newphymode == IEEE80211_MODE_AUTO) { 532 for (j = IEEE80211_MODE_11A; j < IEEE80211_MODE_MAX; j++) 533 if (ic->ic_modecaps & (1<<j)) { 534 newphymode = j; 535 break; 536 } 537 } 538 539 /* 540 * Handle phy mode change. 541 */ 542 if (ic->ic_curmode != newphymode) { /* change phy mode */ 543 error = ieee80211_setmode(ic, newphymode); 544 if (error != 0) 545 return error; 546 error = ENETRESET; 547 } 548 549 /* 550 * Committed to changes, install the rate setting. 551 */ 552 if (ic->ic_fixed_rate != i) { 553 ic->ic_fixed_rate = i; /* set fixed tx rate */ 554 error = ENETRESET; 555 } 556 557 /* 558 * Handle operating mode change. 559 */ 560 if (ic->ic_opmode != newopmode) { 561 ic->ic_opmode = newopmode; 562 switch (newopmode) { 563 case IEEE80211_M_AHDEMO: 564 case IEEE80211_M_HOSTAP: 565 case IEEE80211_M_STA: 566 case IEEE80211_M_MONITOR: 567 ic->ic_flags &= ~IEEE80211_F_IBSSON; 568 break; 569 case IEEE80211_M_IBSS: 570 ic->ic_flags |= IEEE80211_F_IBSSON; 571 break; 572 } 573 error = ENETRESET; 574 } 575 #ifdef notdef 576 if (error == 0) 577 ifp->if_baudrate = ifmedia_baudrate(ime->ifm_media); 578 #endif 579 return error; 580 } 581 582 void 583 ieee80211_media_status(struct ifnet *ifp, struct ifmediareq *imr) 584 { 585 struct ieee80211com *ic = (void *)ifp; 586 struct ieee80211_node *ni = NULL; 587 588 imr->ifm_status = IFM_AVALID; 589 imr->ifm_active = IFM_IEEE80211; 590 if (ic->ic_state == IEEE80211_S_RUN) 591 imr->ifm_status |= IFM_ACTIVE; 592 imr->ifm_active |= IFM_AUTO; 593 switch (ic->ic_opmode) { 594 case IEEE80211_M_STA: 595 ni = ic->ic_bss; 596 /* calculate rate subtype */ 597 imr->ifm_active |= ieee80211_rate2media(ic, 598 ni->ni_rates.rs_rates[ni->ni_txrate], ic->ic_curmode); 599 break; 600 case IEEE80211_M_IBSS: 601 imr->ifm_active |= IFM_IEEE80211_ADHOC; 602 break; 603 case IEEE80211_M_AHDEMO: 604 /* should not come here */ 605 break; 606 case IEEE80211_M_HOSTAP: 607 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 608 break; 609 case IEEE80211_M_MONITOR: 610 imr->ifm_active |= IFM_IEEE80211_MONITOR; 611 break; 612 } 613 switch (ic->ic_curmode) { 614 case IEEE80211_MODE_11A: 615 imr->ifm_active |= IFM_IEEE80211_11A; 616 break; 617 case IEEE80211_MODE_11B: 618 imr->ifm_active |= IFM_IEEE80211_11B; 619 break; 620 case IEEE80211_MODE_11G: 621 imr->ifm_active |= IFM_IEEE80211_11G; 622 break; 623 case IEEE80211_MODE_FH: 624 imr->ifm_active |= IFM_IEEE80211_FH; 625 break; 626 case IEEE80211_MODE_TURBO: 627 imr->ifm_active |= IFM_IEEE80211_11A 628 | IFM_IEEE80211_TURBO; 629 break; 630 } 631 } 632 633 void 634 ieee80211_watchdog(struct ifnet *ifp) 635 { 636 struct ieee80211com *ic = (void *)ifp; 637 638 if (ic->ic_mgt_timer && --ic->ic_mgt_timer == 0) 639 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 640 641 if (ic->ic_mgt_timer != 0) 642 ifp->if_timer = 1; 643 } 644 645 /* 646 * Mark the basic rates for the 11g rate table based on the 647 * operating mode. For real 11g we mark all the 11b rates 648 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only 649 * 11b rates. There's also a pseudo 11a-mode used to mark only 650 * the basic OFDM rates. 651 */ 652 static void 653 ieee80211_setbasicrates(struct ieee80211com *ic) 654 { 655 static const struct ieee80211_rateset basic[] = { 656 { 0 }, /* IEEE80211_MODE_AUTO */ 657 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */ 658 { 2, { 2, 4 } }, /* IEEE80211_MODE_11B */ 659 { 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G */ 660 { 2, { 2, 4 } }, /* IEEE80211_MODE_FH */ 661 { 0 }, /* IEEE80211_MODE_TURBO */ 662 }; 663 enum ieee80211_phymode mode; 664 struct ieee80211_rateset *rs; 665 int i, j; 666 667 for (mode = 0; mode < IEEE80211_MODE_MAX; mode++) { 668 rs = &ic->ic_sup_rates[mode]; 669 for (i = 0; i < rs->rs_nrates; i++) { 670 rs->rs_rates[i] &= IEEE80211_RATE_VAL; 671 for (j = 0; j < basic[mode].rs_nrates; j++) 672 if (basic[mode].rs_rates[j] == rs->rs_rates[i]) { 673 rs->rs_rates[i] |= IEEE80211_RATE_BASIC; 674 break; 675 } 676 } 677 } 678 } 679 680 /* 681 * Set the current phy mode and recalculate the active channel 682 * set based on the available channels for this mode. Also 683 * select a new default/current channel if the current one is 684 * inappropriate for this mode. 685 */ 686 int 687 ieee80211_setmode(struct ieee80211com *ic, enum ieee80211_phymode mode) 688 { 689 #define N(a) (sizeof(a) / sizeof(a[0])) 690 static const u_int chanflags[] = { 691 0, /* IEEE80211_MODE_AUTO */ 692 IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */ 693 IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */ 694 IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */ 695 IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */ 696 IEEE80211_CHAN_T, /* IEEE80211_MODE_TURBO */ 697 }; 698 struct ieee80211_channel *c; 699 u_int modeflags; 700 int i; 701 702 /* validate new mode */ 703 if ((ic->ic_modecaps & (1<<mode)) == 0) { 704 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 705 ("%s: mode %u not supported (caps 0x%x)\n", 706 __func__, mode, ic->ic_modecaps)); 707 return EINVAL; 708 } 709 710 /* 711 * Verify at least one channel is present in the available 712 * channel list before committing to the new mode. 713 */ 714 IASSERT(mode < N(chanflags), ("Unexpected mode %u", mode)); 715 modeflags = chanflags[mode]; 716 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 717 c = &ic->ic_channels[i]; 718 if (mode == IEEE80211_MODE_AUTO) { 719 /* ignore turbo channels for autoselect */ 720 if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 721 break; 722 } else { 723 if ((c->ic_flags & modeflags) == modeflags) 724 break; 725 } 726 } 727 if (i > IEEE80211_CHAN_MAX) { 728 IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY, 729 ("%s: no channels found for mode %u\n", __func__, mode)); 730 return EINVAL; 731 } 732 733 /* 734 * Calculate the active channel set. 735 */ 736 memset(ic->ic_chan_active, 0, sizeof(ic->ic_chan_active)); 737 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 738 c = &ic->ic_channels[i]; 739 if (mode == IEEE80211_MODE_AUTO) { 740 /* take anything but pure turbo channels */ 741 if ((c->ic_flags &~ IEEE80211_CHAN_TURBO) != 0) 742 setbit(ic->ic_chan_active, i); 743 } else { 744 if ((c->ic_flags & modeflags) == modeflags) 745 setbit(ic->ic_chan_active, i); 746 } 747 } 748 /* 749 * If no current/default channel is setup or the current 750 * channel is wrong for the mode then pick the first 751 * available channel from the active list. This is likely 752 * not the right one. 753 */ 754 if (ic->ic_ibss_chan == NULL || 755 isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ic->ic_ibss_chan))) { 756 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) 757 if (isset(ic->ic_chan_active, i)) { 758 ic->ic_ibss_chan = &ic->ic_channels[i]; 759 break; 760 } 761 IASSERT(ic->ic_ibss_chan != NULL && 762 isset(ic->ic_chan_active, 763 ieee80211_chan2ieee(ic, ic->ic_ibss_chan)), 764 ("Bad IBSS channel %u", 765 ieee80211_chan2ieee(ic, ic->ic_ibss_chan))); 766 } 767 768 /* 769 * Set/reset state flags that influence beacon contents, etc. 770 * 771 * XXX what if we have stations already associated??? 772 * XXX probably not right for autoselect? 773 * 774 * Short preamble is not interoperable with legacy .11b 775 * equipment, so it should not be the default for b or 776 * mixed b/g networks. -dcy 777 */ 778 #if 0 779 if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) 780 ic->ic_flags |= IEEE80211_F_SHPREAMBLE; 781 #endif 782 if (mode == IEEE80211_MODE_11G) { 783 if (ic->ic_caps & IEEE80211_C_SHSLOT) 784 ic->ic_flags |= IEEE80211_F_SHSLOT; 785 } else 786 ic->ic_flags &= ~IEEE80211_F_SHSLOT; 787 788 ic->ic_curmode = mode; 789 return 0; 790 #undef N 791 } 792 793 /* 794 * Return the phy mode for with the specified channel so the 795 * caller can select a rate set. This is problematic and the 796 * work here assumes how things work elsewhere in this code. 797 * 798 * XXX never returns turbo modes -dcy 799 */ 800 enum ieee80211_phymode 801 ieee80211_chan2mode(struct ieee80211com *ic, struct ieee80211_channel *chan) 802 { 803 /* 804 * NB: this assumes the channel would not be supplied to us 805 * unless it was already compatible with the current mode. 806 */ 807 if (ic->ic_curmode != IEEE80211_MODE_AUTO || 808 chan == IEEE80211_CHAN_ANYC) 809 return ic->ic_curmode; 810 /* 811 * In autoselect mode; deduce a mode based on the channel 812 * characteristics. We assume that turbo-only channels 813 * are not considered when the channel set is constructed. 814 */ 815 if (IEEE80211_IS_CHAN_5GHZ(chan)) 816 return IEEE80211_MODE_11A; 817 else if (IEEE80211_IS_CHAN_FHSS(chan)) 818 return IEEE80211_MODE_FH; 819 else if (chan->ic_flags & (IEEE80211_CHAN_OFDM|IEEE80211_CHAN_DYN)) 820 return IEEE80211_MODE_11G; 821 else 822 return IEEE80211_MODE_11B; 823 } 824 825 /* 826 * convert IEEE80211 rate value to ifmedia subtype. 827 * ieee80211 rate is in unit of 0.5Mbps. 828 */ 829 int 830 ieee80211_rate2media(struct ieee80211com *ic, int rate, enum ieee80211_phymode mode) 831 { 832 #define N(a) (sizeof(a) / sizeof(a[0])) 833 static const struct { 834 u_int m; /* rate + mode */ 835 u_int r; /* if_media rate */ 836 } rates[] = { 837 { 2 | IFM_IEEE80211_FH, IFM_IEEE80211_FH1 }, 838 { 4 | IFM_IEEE80211_FH, IFM_IEEE80211_FH2 }, 839 { 2 | IFM_IEEE80211_11B, IFM_IEEE80211_DS1 }, 840 { 4 | IFM_IEEE80211_11B, IFM_IEEE80211_DS2 }, 841 { 11 | IFM_IEEE80211_11B, IFM_IEEE80211_DS5 }, 842 { 22 | IFM_IEEE80211_11B, IFM_IEEE80211_DS11 }, 843 { 44 | IFM_IEEE80211_11B, IFM_IEEE80211_DS22 }, 844 { 12 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM6 }, 845 { 18 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM9 }, 846 { 24 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM12 }, 847 { 36 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM18 }, 848 { 48 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM24 }, 849 { 72 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM36 }, 850 { 96 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM48 }, 851 { 108 | IFM_IEEE80211_11A, IFM_IEEE80211_OFDM54 }, 852 { 2 | IFM_IEEE80211_11G, IFM_IEEE80211_DS1 }, 853 { 4 | IFM_IEEE80211_11G, IFM_IEEE80211_DS2 }, 854 { 11 | IFM_IEEE80211_11G, IFM_IEEE80211_DS5 }, 855 { 22 | IFM_IEEE80211_11G, IFM_IEEE80211_DS11 }, 856 { 12 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM6 }, 857 { 18 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM9 }, 858 { 24 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM12 }, 859 { 36 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM18 }, 860 { 48 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM24 }, 861 { 72 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM36 }, 862 { 96 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM48 }, 863 { 108 | IFM_IEEE80211_11G, IFM_IEEE80211_OFDM54 }, 864 /* NB: OFDM72 doesn't realy exist so we don't handle it */ 865 }; 866 u_int mask, i; 867 868 mask = rate & IEEE80211_RATE_VAL; 869 switch (mode) { 870 case IEEE80211_MODE_11A: 871 case IEEE80211_MODE_TURBO: 872 mask |= IFM_IEEE80211_11A; 873 break; 874 case IEEE80211_MODE_11B: 875 mask |= IFM_IEEE80211_11B; 876 break; 877 case IEEE80211_MODE_FH: 878 mask |= IFM_IEEE80211_FH; 879 break; 880 case IEEE80211_MODE_AUTO: 881 /* NB: ic may be NULL for some drivers */ 882 if (ic && ic->ic_phytype == IEEE80211_T_FH) { 883 mask |= IFM_IEEE80211_FH; 884 break; 885 } 886 /* NB: hack, 11g matches both 11b+11a rates */ 887 /* fall thru... */ 888 case IEEE80211_MODE_11G: 889 mask |= IFM_IEEE80211_11G; 890 break; 891 } 892 for (i = 0; i < N(rates); i++) 893 if (rates[i].m == mask) 894 return rates[i].r; 895 return IFM_AUTO; 896 #undef N 897 } 898 899 int 900 ieee80211_media2rate(int mword) 901 { 902 #define N(a) (sizeof(a) / sizeof(a[0])) 903 static const int ieeerates[] = { 904 -1, /* IFM_AUTO */ 905 0, /* IFM_MANUAL */ 906 0, /* IFM_NONE */ 907 2, /* IFM_IEEE80211_FH1 */ 908 4, /* IFM_IEEE80211_FH2 */ 909 4, /* IFM_IEEE80211_DS2 */ 910 11, /* IFM_IEEE80211_DS5 */ 911 22, /* IFM_IEEE80211_DS11 */ 912 2, /* IFM_IEEE80211_DS1 */ 913 44, /* IFM_IEEE80211_DS22 */ 914 12, /* IFM_IEEE80211_OFDM6 */ 915 18, /* IFM_IEEE80211_OFDM9 */ 916 24, /* IFM_IEEE80211_OFDM12 */ 917 36, /* IFM_IEEE80211_OFDM18 */ 918 48, /* IFM_IEEE80211_OFDM24 */ 919 72, /* IFM_IEEE80211_OFDM36 */ 920 96, /* IFM_IEEE80211_OFDM48 */ 921 108, /* IFM_IEEE80211_OFDM54 */ 922 144, /* IFM_IEEE80211_OFDM72 */ 923 }; 924 return IFM_SUBTYPE(mword) < N(ieeerates) ? 925 ieeerates[IFM_SUBTYPE(mword)] : 0; 926 #undef N 927 } 928 929 #ifdef __NetBSD__ 930 static void 931 ieee80211_clean_all_nodes(int cache_size) 932 { 933 struct ieee80211com *ic; 934 LIST_FOREACH(ic, &ieee80211com_head, ic_list) { 935 ic->ic_max_nnodes = cache_size; 936 ieee80211_clean_nodes(ic); 937 } 938 } 939 940 /* TBD factor with sysctl_ath_verify. */ 941 static int 942 sysctl_ieee80211_verify(SYSCTLFN_ARGS) 943 { 944 int error, t; 945 struct sysctlnode node; 946 947 node = *rnode; 948 t = *(int*)rnode->sysctl_data; 949 node.sysctl_data = &t; 950 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 951 if (error || newp == NULL) 952 return (error); 953 954 if (node.sysctl_num == ieee80211_cache_size_nodenum) { 955 if (t < 0) 956 return (EINVAL); 957 #ifdef IEEE80211_DEBUG 958 } else if (node.sysctl_num != ieee80211_debug_nodenum) 959 #else /* IEEE80211_DEBUG */ 960 } else 961 #endif /* IEEE80211_DEBUG */ 962 return (EINVAL); 963 964 *(int*)rnode->sysctl_data = t; 965 966 if (node.sysctl_num == ieee80211_cache_size_nodenum) 967 ieee80211_clean_all_nodes(t); 968 return (0); 969 } 970 971 /* 972 * Pointers for testing: 973 * 974 * If there are no interfaces, or else no 802.11 interfaces, 975 * ieee80211_node_walkfirst must return NULL. 976 * 977 * If there is any single 802.11 interface, ieee80211_node_walkfirst 978 * must not return NULL. 979 */ 980 static struct ieee80211_node * 981 ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, 982 u_short if_index) 983 { 984 struct ieee80211com *ic; 985 (void)memset(nw, 0, sizeof(*nw)); 986 987 nw->nw_ifindex = if_index; 988 989 LIST_FOREACH(ic, &ieee80211com_head, ic_list) { 990 if (if_index != 0 && ic->ic_if.if_index != if_index) 991 continue; 992 nw->nw_ic = ic; 993 nw->nw_ni = ic->ic_bss; 994 break; 995 } 996 997 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 998 999 return nw->nw_ni; 1000 } 1001 1002 static struct ieee80211_node * 1003 ieee80211_node_walknext(struct ieee80211_node_walk *nw) 1004 { 1005 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 1006 1007 if (nw->nw_ic == NULL && nw->nw_ni == NULL) 1008 return NULL; 1009 1010 if (nw->nw_ni == nw->nw_ic->ic_bss) 1011 nw->nw_ni = TAILQ_FIRST(&nw->nw_ic->ic_node); 1012 else 1013 nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); 1014 1015 if (nw->nw_ni == NULL) { 1016 if (nw->nw_ifindex != 0) 1017 return NULL; 1018 1019 nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); 1020 if (nw->nw_ic == NULL) 1021 return NULL; 1022 1023 nw->nw_ni = nw->nw_ic->ic_bss; 1024 } 1025 1026 KASSERT(LOGICALLY_EQUAL(nw->nw_ni == NULL, nw->nw_ic == NULL)); 1027 1028 return nw->nw_ni; 1029 } 1030 1031 static void 1032 sysctl_ieee80211_fill_node(struct ieee80211_node *ni, 1033 struct ieee80211_node_sysctl *ns, int ifindex, 1034 struct ieee80211_channel *chan0, int is_bss) 1035 { 1036 ns->ns_ifindex = ifindex; 1037 ns->ns_capinfo = ni->ni_capinfo; 1038 ns->ns_flags = (is_bss) ? IEEE80211_NODE_SYSCTL_F_BSS : 0; 1039 (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); 1040 (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); 1041 if (ni->ni_chan != IEEE80211_CHAN_ANYC) { 1042 ns->ns_freq = ni->ni_chan->ic_freq; 1043 ns->ns_chanflags = ni->ni_chan->ic_flags; 1044 ns->ns_chanidx = ni->ni_chan - chan0; 1045 } else { 1046 ns->ns_freq = ns->ns_chanflags = 0; 1047 ns->ns_chanidx = 0; 1048 } 1049 ns->ns_rssi = ni->ni_rssi; 1050 ns->ns_esslen = ni->ni_esslen; 1051 (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); 1052 ns->ns_pwrsave = ni->ni_pwrsave; 1053 ns->ns_erp = ni->ni_erp; 1054 ns->ns_associd = ni->ni_associd; 1055 ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; 1056 ns->ns_rstamp = ni->ni_rstamp; 1057 ns->ns_rates = ni->ni_rates; 1058 ns->ns_txrate = ni->ni_txrate; 1059 ns->ns_intval = ni->ni_intval; 1060 (void)memcpy(ns->ns_tstamp, ni->ni_tstamp, sizeof(ns->ns_tstamp)); 1061 ns->ns_txseq = ni->ni_txseq; 1062 ns->ns_rxseq = ni->ni_rxseq; 1063 ns->ns_fhdwell = ni->ni_fhdwell; 1064 ns->ns_fhindex = ni->ni_fhindex; 1065 ns->ns_fails = ni->ni_fails; 1066 } 1067 1068 /* Between two examinations of the sysctl tree, I expect each 1069 * interface to add no more than 5 nodes. 1070 */ 1071 #define IEEE80211_SYSCTL_NODE_GROWTH 5 1072 1073 static int 1074 sysctl_ieee80211_node(SYSCTLFN_ARGS) 1075 { 1076 struct ieee80211_node_walk nw; 1077 struct ieee80211_node *ni; 1078 struct ieee80211_node_sysctl ns; 1079 char *dp; 1080 u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; 1081 size_t len, needed, eltsize, out_size; 1082 int error, s, nelt; 1083 1084 if (namelen == 1 && name[0] == CTL_QUERY) 1085 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1086 1087 if (namelen != IEEE80211_SYSCTL_NODENAMELEN) 1088 return (EINVAL); 1089 1090 /* ifindex.op.arg.header-type.eltsize.nelt */ 1091 dp = oldp; 1092 len = (oldp != NULL) ? *oldlenp : 0; 1093 ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; 1094 op = name[IEEE80211_SYSCTL_NODENAME_OP]; 1095 arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; 1096 hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; 1097 eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; 1098 nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; 1099 out_size = MIN(sizeof(ns), eltsize); 1100 1101 if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || 1102 hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) 1103 return (EINVAL); 1104 1105 error = 0; 1106 needed = 0; 1107 ifcount = 0; 1108 last_ifindex = 0; 1109 1110 s = splnet(); 1111 1112 for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; 1113 ni = ieee80211_node_walknext(&nw)) { 1114 struct ieee80211com *ic; 1115 1116 ic = nw.nw_ic; 1117 cur_ifindex = ic->ic_if.if_index; 1118 1119 if (cur_ifindex != last_ifindex) { 1120 ifcount++; 1121 last_ifindex = cur_ifindex; 1122 } 1123 1124 if (nelt <= 0) 1125 continue; 1126 1127 if (len >= eltsize) { 1128 sysctl_ieee80211_fill_node(ni, &ns, cur_ifindex, 1129 &ic->ic_channels[0], ni == ic->ic_bss); 1130 error = copyout(&ns, dp, out_size); 1131 if (error) 1132 goto cleanup; 1133 dp += eltsize; 1134 len -= eltsize; 1135 } 1136 needed += eltsize; 1137 if (nelt != INT_MAX) 1138 nelt--; 1139 } 1140 cleanup: 1141 splx(s); 1142 1143 *oldlenp = needed; 1144 if (oldp == NULL) 1145 *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; 1146 1147 return (error); 1148 } 1149 1150 /* 1151 * Setup sysctl(3) MIB, net.ieee80211.* 1152 * 1153 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 1154 */ 1155 SYSCTL_SETUP(sysctl_ieee80211, "sysctl ieee80211 subtree setup") 1156 { 1157 int rc; 1158 struct sysctlnode *cnode, *rnode; 1159 1160 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 1161 CTLFLAG_PERMANENT, CTLTYPE_NODE, "net", NULL, 1162 NULL, 0, NULL, 0, CTL_NET, CTL_EOL)) != 0) 1163 goto err; 1164 1165 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 1166 CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", 1167 "link-layer statistics and controls", 1168 NULL, 0, NULL, 0, PF_LINK, CTL_EOL)) != 0) 1169 goto err; 1170 1171 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 1172 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", 1173 "IEEE 802.11 WLAN statistics and controls", 1174 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 1175 goto err; 1176 1177 if ((rc = sysctl_createv(clog, 0, &rnode, NULL, 1178 CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", 1179 sysctl_ieee80211_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 1180 goto err; 1181 1182 #ifdef IEEE80211_DEBUG 1183 1184 /* control debugging printfs */ 1185 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 1186 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 1187 "debug", SYSCTL_DESCR("Enable IEEE 802.11 debugging output"), 1188 sysctl_ieee80211_verify, 0, &ieee80211_debug, 0, 1189 CTL_CREATE, CTL_EOL)) != 0) 1190 goto err; 1191 1192 ieee80211_debug_nodenum = cnode->sysctl_num; 1193 1194 #endif /* IEEE80211_DEBUG */ 1195 1196 /* control LRU cache size */ 1197 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 1198 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 1199 "maxnodecache", SYSCTL_DESCR("Maximum station cache size"), 1200 sysctl_ieee80211_verify, 0, &ieee80211_cache_size, 1201 0, CTL_CREATE, CTL_EOL)) != 0) 1202 goto err; 1203 1204 ieee80211_cache_size_nodenum = cnode->sysctl_num; 1205 1206 return; 1207 err: 1208 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 1209 } 1210 #endif /* __NetBSD__ */ 1211 1212 #ifdef __FreeBSD__ 1213 /* 1214 * Module glue. 1215 * 1216 * NB: the module name is "wlan" for compatibility with NetBSD. 1217 */ 1218 1219 static int 1220 ieee80211_modevent(module_t mod, int type, void *unused) 1221 { 1222 switch (type) { 1223 case MOD_LOAD: 1224 if (bootverbose) 1225 printf("wlan: <802.11 Link Layer>\n"); 1226 return 0; 1227 case MOD_UNLOAD: 1228 return 0; 1229 } 1230 return EINVAL; 1231 } 1232 1233 static moduledata_t ieee80211_mod = { 1234 "wlan", 1235 ieee80211_modevent, 1236 0 1237 }; 1238 DECLARE_MODULE(wlan, ieee80211_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 1239 MODULE_VERSION(wlan, 1); 1240 MODULE_DEPEND(wlan, rc4, 1, 1, 1); 1241 MODULE_DEPEND(wlan, ether, 1, 1, 1); 1242 #endif 1243
Indexes created Thu Oct 02 10:09:58 GMT 2025