1 /* $NetBSD: ieee80211_netbsd.c,v 1.26 2014/04/07 00:07:40 pooka Exp $ */ 2 /*- 3 * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #ifdef __FreeBSD__ 31 __FBSDID("$FreeBSD: src/sys/net80211/ieee80211_freebsd.c,v 1.8 2005/08/08 18:46:35 sam Exp $"); 32 #else 33 __KERNEL_RCSID(0, "$NetBSD: ieee80211_netbsd.c,v 1.26 2014/04/07 00:07:40 pooka Exp $"); 34 #endif 35 36 /* 37 * IEEE 802.11 support (NetBSD-specific code) 38 */ 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/proc.h> 44 #include <sys/sysctl.h> 45 #include <sys/once.h> 46 47 #include <sys/socket.h> 48 49 #include <sys/cprng.h> 50 51 #include <net/if.h> 52 #include <net/if_media.h> 53 #include <net/if_ether.h> 54 #include <net/route.h> 55 56 #include <net80211/ieee80211_netbsd.h> 57 #include <net80211/ieee80211_var.h> 58 #include <net80211/ieee80211_sysctl.h> 59 60 #define LOGICALLY_EQUAL(x, y) (!(x) == !(y)) 61 62 static void ieee80211_sysctl_fill_node(struct ieee80211_node *, 63 struct ieee80211_node_sysctl *, int, const struct ieee80211_channel *, 64 uint32_t); 65 static struct ieee80211_node *ieee80211_node_walknext( 66 struct ieee80211_node_walk *); 67 static struct ieee80211_node *ieee80211_node_walkfirst( 68 struct ieee80211_node_walk *, u_short); 69 static int ieee80211_sysctl_node(SYSCTLFN_ARGS); 70 71 static void ieee80211_sysctl_setup(void); 72 73 #ifdef IEEE80211_DEBUG 74 int ieee80211_debug = 0; 75 #endif 76 77 typedef void (*ieee80211_setup_func)(void); 78 79 __link_set_decl(ieee80211_funcs, ieee80211_setup_func); 80 81 static int 82 ieee80211_init0(void) 83 { 84 ieee80211_setup_func * const *ieee80211_setup, f; 85 86 ieee80211_sysctl_setup(); 87 88 if (max_linkhdr < ALIGN(sizeof(struct ieee80211_qosframe_addr4))) { 89 max_linkhdr = ALIGN(sizeof(struct ieee80211_qosframe_addr4)); 90 } 91 92 __link_set_foreach(ieee80211_setup, ieee80211_funcs) { 93 f = (void*)*ieee80211_setup; 94 (*f)(); 95 } 96 97 return 0; 98 } 99 100 void 101 ieee80211_init(void) 102 { 103 static ONCE_DECL(ieee80211_init_once); 104 105 RUN_ONCE(&ieee80211_init_once, ieee80211_init0); 106 } 107 108 static int 109 ieee80211_sysctl_inact(SYSCTLFN_ARGS) 110 { 111 int error, t; 112 struct sysctlnode node; 113 114 node = *rnode; 115 /* sysctl_lookup copies the product from t. Then, it 116 * copies the new value onto t. 117 */ 118 t = *(int*)rnode->sysctl_data * IEEE80211_INACT_WAIT; 119 node.sysctl_data = &t; 120 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 121 if (error || newp == NULL) 122 return (error); 123 124 /* The new value was in seconds. Convert to inactivity-wait 125 * intervals. There are IEEE80211_INACT_WAIT seconds per 126 * interval. 127 */ 128 *(int*)rnode->sysctl_data = t / IEEE80211_INACT_WAIT; 129 130 return (0); 131 } 132 133 static int 134 ieee80211_sysctl_parent(SYSCTLFN_ARGS) 135 { 136 struct ieee80211com *ic; 137 char pname[IFNAMSIZ]; 138 struct sysctlnode node; 139 140 node = *rnode; 141 ic = node.sysctl_data; 142 strncpy(pname, ic->ic_ifp->if_xname, IFNAMSIZ); 143 node.sysctl_data = pname; 144 return sysctl_lookup(SYSCTLFN_CALL(&node)); 145 } 146 147 /* 148 * Create or get top of sysctl tree net.link.ieee80211. 149 */ 150 static const struct sysctlnode * 151 ieee80211_sysctl_treetop(struct sysctllog **log) 152 { 153 int rc; 154 const struct sysctlnode *rnode; 155 156 if ((rc = sysctl_createv(log, 0, NULL, &rnode, 157 CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", 158 "link-layer statistics and controls", 159 NULL, 0, NULL, 0, CTL_NET, PF_LINK, CTL_EOL)) != 0) 160 goto err; 161 162 if ((rc = sysctl_createv(log, 0, &rnode, &rnode, 163 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", 164 "IEEE 802.11 WLAN statistics and controls", 165 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 166 goto err; 167 168 return rnode; 169 err: 170 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 171 return NULL; 172 } 173 174 void 175 ieee80211_sysctl_attach(struct ieee80211com *ic) 176 { 177 int rc; 178 const struct sysctlnode *cnode, *rnode; 179 char num[sizeof("vap") + 14]; /* sufficient for 32 bits */ 180 181 if ((rnode = ieee80211_sysctl_treetop(NULL)) == NULL) 182 return; 183 184 snprintf(num, sizeof(num), "vap%u", ic->ic_vap); 185 186 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &rnode, 187 CTLFLAG_PERMANENT, CTLTYPE_NODE, num, SYSCTL_DESCR("virtual AP"), 188 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 189 goto err; 190 191 /* control debugging printfs */ 192 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 193 CTLFLAG_PERMANENT|CTLFLAG_READONLY, CTLTYPE_STRING, 194 "parent", SYSCTL_DESCR("parent device"), 195 ieee80211_sysctl_parent, 0, (void *)ic, IFNAMSIZ, CTL_CREATE, 196 CTL_EOL)) != 0) 197 goto err; 198 199 #ifdef IEEE80211_DEBUG 200 /* control debugging printfs */ 201 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 202 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 203 "debug", SYSCTL_DESCR("control debugging printfs"), 204 NULL, ieee80211_debug, &ic->ic_debug, 0, 205 CTL_CREATE, CTL_EOL)) != 0) 206 goto err; 207 #endif 208 /* XXX inherit from tunables */ 209 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 210 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 211 "inact_run", SYSCTL_DESCR("station inactivity timeout (sec)"), 212 ieee80211_sysctl_inact, 0, &ic->ic_inact_run, 0, 213 CTL_CREATE, CTL_EOL)) != 0) 214 goto err; 215 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 216 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 217 "inact_probe", 218 SYSCTL_DESCR("station inactivity probe timeout (sec)"), 219 ieee80211_sysctl_inact, 0, &ic->ic_inact_probe, 0, 220 CTL_CREATE, CTL_EOL)) != 0) 221 goto err; 222 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 223 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 224 "inact_auth", 225 SYSCTL_DESCR("station authentication timeout (sec)"), 226 ieee80211_sysctl_inact, 0, &ic->ic_inact_auth, 0, 227 CTL_CREATE, CTL_EOL)) != 0) 228 goto err; 229 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 230 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 231 "inact_init", 232 SYSCTL_DESCR("station initial state timeout (sec)"), 233 ieee80211_sysctl_inact, 0, &ic->ic_inact_init, 0, 234 CTL_CREATE, CTL_EOL)) != 0) 235 goto err; 236 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 237 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 238 "driver_caps", SYSCTL_DESCR("driver capabilities"), 239 NULL, 0, &ic->ic_caps, 0, CTL_CREATE, CTL_EOL)) != 0) 240 goto err; 241 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 242 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 243 "bmiss_max", SYSCTL_DESCR("consecutive beacon misses before scanning"), 244 NULL, 0, &ic->ic_bmiss_max, 0, CTL_CREATE, CTL_EOL)) != 0) 245 goto err; 246 247 return; 248 err: 249 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 250 } 251 252 void 253 ieee80211_sysctl_detach(struct ieee80211com *ic) 254 { 255 sysctl_teardown(&ic->ic_sysctllog); 256 } 257 258 /* 259 * Pointers for testing: 260 * 261 * If there are no interfaces, or else no 802.11 interfaces, 262 * ieee80211_node_walkfirst must return NULL. 263 * 264 * If there is any single 802.11 interface, ieee80211_node_walkfirst 265 * must not return NULL. 266 */ 267 static struct ieee80211_node * 268 ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, u_short if_index) 269 { 270 (void)memset(nw, 0, sizeof(*nw)); 271 272 nw->nw_ifindex = if_index; 273 274 LIST_FOREACH(nw->nw_ic, &ieee80211com_head, ic_list) { 275 if (if_index != 0 && nw->nw_ic->ic_ifp->if_index != if_index) 276 continue; 277 if (!TAILQ_EMPTY(&nw->nw_ic->ic_sta.nt_node)) 278 nw->nw_nt = &nw->nw_ic->ic_sta; 279 else if (!TAILQ_EMPTY(&nw->nw_ic->ic_scan.nt_node)) 280 nw->nw_nt = &nw->nw_ic->ic_scan; 281 else if (nw->nw_ic->ic_bss == NULL) 282 continue; 283 break; 284 } 285 286 if (nw->nw_ic == NULL) 287 return NULL; 288 289 if (nw->nw_nt == NULL) 290 nw->nw_ni = nw->nw_ic->ic_bss; 291 else 292 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 293 294 return nw->nw_ni; 295 } 296 297 static struct ieee80211_node * 298 ieee80211_node_walknext(struct ieee80211_node_walk *nw) 299 { 300 if (nw->nw_nt != NULL) 301 nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); 302 else 303 nw->nw_ni = NULL; 304 305 while (nw->nw_ni == NULL) { 306 if (nw->nw_nt == &nw->nw_ic->ic_sta) { 307 nw->nw_nt = &nw->nw_ic->ic_scan; 308 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 309 continue; 310 } else if (nw->nw_nt == &nw->nw_ic->ic_scan) { 311 nw->nw_nt = NULL; 312 nw->nw_ni = nw->nw_ic->ic_bss; 313 continue; 314 } 315 KASSERT(nw->nw_nt == NULL); 316 if (nw->nw_ifindex != 0) 317 return NULL; 318 319 nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); 320 if (nw->nw_ic == NULL) 321 return NULL; 322 323 nw->nw_nt = &nw->nw_ic->ic_sta; 324 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 325 } 326 327 return nw->nw_ni; 328 } 329 330 static void 331 ieee80211_sysctl_fill_node(struct ieee80211_node *ni, 332 struct ieee80211_node_sysctl *ns, int ifindex, 333 const struct ieee80211_channel *chan0, uint32_t flags) 334 { 335 ns->ns_ifindex = ifindex; 336 ns->ns_capinfo = ni->ni_capinfo; 337 ns->ns_flags = flags; 338 (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); 339 (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); 340 if (ni->ni_chan != IEEE80211_CHAN_ANYC) { 341 ns->ns_freq = ni->ni_chan->ic_freq; 342 ns->ns_chanflags = ni->ni_chan->ic_flags; 343 ns->ns_chanidx = ni->ni_chan - chan0; 344 } else { 345 ns->ns_freq = ns->ns_chanflags = 0; 346 ns->ns_chanidx = 0; 347 } 348 ns->ns_rssi = ni->ni_rssi; 349 ns->ns_esslen = ni->ni_esslen; 350 (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); 351 ns->ns_erp = ni->ni_erp; 352 ns->ns_associd = ni->ni_associd; 353 ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; 354 ns->ns_rstamp = ni->ni_rstamp; 355 ns->ns_rates = ni->ni_rates; 356 ns->ns_txrate = ni->ni_txrate; 357 ns->ns_intval = ni->ni_intval; 358 (void)memcpy(ns->ns_tstamp, &ni->ni_tstamp, sizeof(ns->ns_tstamp)); 359 ns->ns_txseq = ni->ni_txseqs[0]; 360 ns->ns_rxseq = ni->ni_rxseqs[0]; 361 ns->ns_fhdwell = ni->ni_fhdwell; 362 ns->ns_fhindex = ni->ni_fhindex; 363 ns->ns_fails = ni->ni_fails; 364 } 365 366 /* Between two examinations of the sysctl tree, I expect each 367 * interface to add no more than 5 nodes. 368 */ 369 #define IEEE80211_SYSCTL_NODE_GROWTH 5 370 371 static int 372 ieee80211_sysctl_node(SYSCTLFN_ARGS) 373 { 374 struct ieee80211_node_walk nw; 375 struct ieee80211_node *ni; 376 struct ieee80211_node_sysctl ns; 377 char *dp; 378 u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; 379 uint32_t flags; 380 size_t len, needed, eltsize, out_size; 381 int error, s, saw_bss = 0, nelt; 382 383 if (namelen == 1 && name[0] == CTL_QUERY) 384 return (sysctl_query(SYSCTLFN_CALL(rnode))); 385 386 if (namelen != IEEE80211_SYSCTL_NODENAMELEN) 387 return (EINVAL); 388 389 /* ifindex.op.arg.header-type.eltsize.nelt */ 390 dp = oldp; 391 len = (oldp != NULL) ? *oldlenp : 0; 392 ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; 393 op = name[IEEE80211_SYSCTL_NODENAME_OP]; 394 arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; 395 hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; 396 eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; 397 nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; 398 out_size = MIN(sizeof(ns), eltsize); 399 400 if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || 401 hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) 402 return (EINVAL); 403 404 error = 0; 405 needed = 0; 406 ifcount = 0; 407 last_ifindex = 0; 408 409 s = splnet(); 410 411 for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; 412 ni = ieee80211_node_walknext(&nw)) { 413 struct ieee80211com *ic; 414 415 ic = nw.nw_ic; 416 cur_ifindex = ic->ic_ifp->if_index; 417 418 if (cur_ifindex != last_ifindex) { 419 saw_bss = 0; 420 ifcount++; 421 last_ifindex = cur_ifindex; 422 } 423 424 if (nelt <= 0) 425 continue; 426 427 if (saw_bss && ni == ic->ic_bss) 428 continue; 429 else if (ni == ic->ic_bss) { 430 saw_bss = 1; 431 flags = IEEE80211_NODE_SYSCTL_F_BSS; 432 } else 433 flags = 0; 434 if (ni->ni_table == &ic->ic_scan) 435 flags |= IEEE80211_NODE_SYSCTL_F_SCAN; 436 else if (ni->ni_table == &ic->ic_sta) 437 flags |= IEEE80211_NODE_SYSCTL_F_STA; 438 if (len >= eltsize) { 439 ieee80211_sysctl_fill_node(ni, &ns, cur_ifindex, 440 &ic->ic_channels[0], flags); 441 error = copyout(&ns, dp, out_size); 442 if (error) 443 goto cleanup; 444 dp += eltsize; 445 len -= eltsize; 446 } 447 needed += eltsize; 448 if (nelt != INT_MAX) 449 nelt--; 450 } 451 cleanup: 452 splx(s); 453 454 *oldlenp = needed; 455 if (oldp == NULL) 456 *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; 457 458 return (error); 459 } 460 461 /* 462 * Setup sysctl(3) MIB, net.ieee80211.* 463 * 464 * TBD condition CTLFLAG_PERMANENT on being a module or not 465 */ 466 static struct sysctllog *ieee80211_sysctllog; 467 static void 468 ieee80211_sysctl_setup(void) 469 { 470 int rc; 471 const struct sysctlnode *cnode, *rnode; 472 473 if ((rnode = ieee80211_sysctl_treetop(&ieee80211_sysctllog)) == NULL) 474 return; 475 476 if ((rc = sysctl_createv(&ieee80211_sysctllog, 0, &rnode, NULL, 477 CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", 478 ieee80211_sysctl_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 479 goto err; 480 481 #ifdef IEEE80211_DEBUG 482 /* control debugging printfs */ 483 if ((rc = sysctl_createv(&ieee80211_sysctllog, 0, &rnode, &cnode, 484 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 485 "debug", SYSCTL_DESCR("control debugging printfs"), 486 NULL, 0, &ieee80211_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 487 goto err; 488 #endif /* IEEE80211_DEBUG */ 489 490 ieee80211_rssadapt_sysctl_setup(&ieee80211_sysctllog); 491 492 return; 493 err: 494 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 495 } 496 497 int 498 ieee80211_node_dectestref(struct ieee80211_node *ni) 499 { 500 if (atomic_dec_uint_nv(&ni->ni_refcnt) == 0) { 501 atomic_inc_uint(&ni->ni_refcnt); 502 return 1; 503 } else 504 return 0; 505 } 506 507 void 508 ieee80211_drain_ifq(struct ifqueue *ifq) 509 { 510 struct ieee80211_node *ni; 511 struct mbuf *m; 512 513 for (;;) { 514 IF_DEQUEUE(ifq, m); 515 if (m == NULL) 516 break; 517 518 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 519 KASSERT(ni != NULL); 520 ieee80211_free_node(ni); 521 m->m_pkthdr.rcvif = NULL; 522 523 m_freem(m); 524 } 525 } 526 527 528 void 529 if_printf(struct ifnet *ifp, const char *fmt, ...) 530 { 531 va_list ap; 532 va_start(ap, fmt); 533 534 printf("%s: ", ifp->if_xname); 535 vprintf(fmt, ap); 536 537 va_end(ap); 538 return; 539 } 540 541 542 /* 543 * Allocate and setup a management frame of the specified 544 * size. We return the mbuf and a pointer to the start 545 * of the contiguous data area that's been reserved based 546 * on the packet length. The data area is forced to 32-bit 547 * alignment and the buffer length to a multiple of 4 bytes. 548 * This is done mainly so beacon frames (that require this) 549 * can use this interface too. 550 */ 551 struct mbuf * 552 ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen) 553 { 554 struct mbuf *m; 555 u_int len; 556 557 /* 558 * NB: we know the mbuf routines will align the data area 559 * so we don't need to do anything special. 560 */ 561 /* XXX 4-address frame? */ 562 len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4); 563 IASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 564 if (len <= MHLEN) { 565 m = m_gethdr(M_NOWAIT, MT_HEADER); 566 /* 567 * Align the data in case additional headers are added. 568 * This should only happen when a WEP header is added 569 * which only happens for shared key authentication mgt 570 * frames which all fit in MHLEN. 571 */ 572 if (m != NULL) 573 MH_ALIGN(m, len); 574 } else 575 m = m_getcl(M_NOWAIT, MT_HEADER, M_PKTHDR); 576 if (m != NULL) { 577 m->m_data += sizeof(struct ieee80211_frame); 578 *frm = m->m_data; 579 IASSERT((uintptr_t)*frm % 4 == 0, ("bad beacon boundary")); 580 } 581 return m; 582 } 583 584 void 585 get_random_bytes(void *p, size_t n) 586 { 587 cprng_fast(p, n); 588 } 589 590 void 591 ieee80211_notify_node_join(struct ieee80211com *ic, struct ieee80211_node *ni, int newassoc) 592 { 593 struct ifnet *ifp = ic->ic_ifp; 594 struct ieee80211_join_event iev; 595 596 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%snode %s join\n", 597 (ni == ic->ic_bss) ? "bss " : "", 598 ether_sprintf(ni->ni_macaddr)); 599 600 memset(&iev, 0, sizeof(iev)); 601 if (ni == ic->ic_bss) { 602 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_bssid); 603 rt_ieee80211msg(ifp, newassoc ? 604 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, 605 &iev, sizeof(iev)); 606 if_link_state_change(ifp, LINK_STATE_UP); 607 } else { 608 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 609 rt_ieee80211msg(ifp, newassoc ? 610 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, 611 &iev, sizeof(iev)); 612 } 613 } 614 615 void 616 ieee80211_notify_node_leave(struct ieee80211com *ic, struct ieee80211_node *ni) 617 { 618 struct ifnet *ifp = ic->ic_ifp; 619 struct ieee80211_leave_event iev; 620 621 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%snode %s leave\n", 622 (ni == ic->ic_bss) ? "bss " : "", 623 ether_sprintf(ni->ni_macaddr)); 624 625 if (ni == ic->ic_bss) { 626 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 627 if_link_state_change(ifp, LINK_STATE_DOWN); 628 } else { 629 /* fire off wireless event station leaving */ 630 memset(&iev, 0, sizeof(iev)); 631 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 632 rt_ieee80211msg(ifp, RTM_IEEE80211_LEAVE, &iev, sizeof(iev)); 633 } 634 } 635 636 void 637 ieee80211_notify_scan_done(struct ieee80211com *ic) 638 { 639 struct ifnet *ifp = ic->ic_ifp; 640 641 IEEE80211_DPRINTF(ic, IEEE80211_MSG_SCAN, 642 "%s", "notify scan done\n"); 643 644 /* dispatch wireless event indicating scan completed */ 645 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 646 } 647 648 void 649 ieee80211_notify_replay_failure(struct ieee80211com *ic, 650 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 651 u_int64_t rsc) 652 { 653 struct ifnet *ifp = ic->ic_ifp; 654 655 IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, 656 "[%s] %s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>\n", 657 ether_sprintf(wh->i_addr2), k->wk_cipher->ic_name, 658 (intmax_t) rsc, (intmax_t) k->wk_keyrsc, 659 k->wk_keyix, k->wk_rxkeyix); 660 661 if (ifp != NULL) { /* NB: for cipher test modules */ 662 struct ieee80211_replay_event iev; 663 664 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 665 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 666 iev.iev_cipher = k->wk_cipher->ic_cipher; 667 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 668 iev.iev_keyix = k->wk_rxkeyix; 669 else 670 iev.iev_keyix = k->wk_keyix; 671 iev.iev_keyrsc = k->wk_keyrsc; 672 iev.iev_rsc = rsc; 673 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 674 } 675 } 676 677 void 678 ieee80211_notify_michael_failure(struct ieee80211com *ic, 679 const struct ieee80211_frame *wh, u_int keyix) 680 { 681 struct ifnet *ifp = ic->ic_ifp; 682 683 IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, 684 "[%s] michael MIC verification failed <keyix %u>\n", 685 ether_sprintf(wh->i_addr2), keyix); 686 ic->ic_stats.is_rx_tkipmic++; 687 688 if (ifp != NULL) { /* NB: for cipher test modules */ 689 struct ieee80211_michael_event iev; 690 691 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 692 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 693 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 694 iev.iev_keyix = keyix; 695 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 696 } 697 } 698 699 void 700 ieee80211_load_module(const char *modname) 701 { 702 #ifdef notyet 703 struct thread *td = curthread; 704 705 if (suser(td) == 0 && securelevel_gt(td->td_ucred, 0) == 0) { 706 mtx_lock(&Giant); 707 (void) linker_load_module(modname, NULL, NULL, NULL, NULL); 708 mtx_unlock(&Giant); 709 } 710 #else 711 printf("%s: load the %s module by hand for now.\n", __func__, modname); 712 #endif 713 } 714