ieee80211_netbsd.c revision 1.3
1 /* $NetBSD: ieee80211_netbsd.c,v 1.3 2005/06/26 04:34:43 dyoung 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 1.6 2005/01/22 20:29:23 sam Exp $"); 32 #else 33 __KERNEL_RCSID(0, "$NetBSD: ieee80211_netbsd.c,v 1.3 2005/06/26 04:34:43 dyoung Exp $"); 34 #endif 35 36 /* 37 * IEEE 802.11 support (FreeBSD-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 46 #include <machine/stdarg.h> 47 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 #include <net/if_ether.h> 53 #include <net/route.h> 54 55 #include <net80211/ieee80211_netbsd.h> 56 #include <net80211/ieee80211_var.h> 57 #include <net80211/ieee80211_sysctl.h> 58 59 #define LOGICALLY_EQUAL(x, y) (!(x) == !(y)) 60 61 static void ieee80211_sysctl_fill_node(struct ieee80211_node *, 62 struct ieee80211_node_sysctl *, int, struct ieee80211_channel *, int); 63 static struct ieee80211_node *ieee80211_node_walknext( 64 struct ieee80211_node_walk *); 65 static struct ieee80211_node *ieee80211_node_walkfirst( 66 struct ieee80211_node_walk *, u_short); 67 static int ieee80211_sysctl_node(SYSCTLFN_ARGS); 68 69 #ifdef IEEE80211_DEBUG 70 int ieee80211_debug = 0; 71 #endif 72 73 static int 74 ieee80211_sysctl_inact(SYSCTLFN_ARGS) 75 { 76 int error, t; 77 struct sysctlnode node; 78 79 node = *rnode; 80 /* sysctl_lookup copies the product from t. Then, it 81 * copies the new value onto t. 82 */ 83 t = *(int*)rnode->sysctl_data * IEEE80211_INACT_WAIT; 84 node.sysctl_data = &t; 85 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 86 if (error || newp == NULL) 87 return (error); 88 89 /* The new value was in seconds. Convert to inactivity-wait 90 * intervals. There are IEEE80211_INACT_WAIT seconds per 91 * interval. 92 */ 93 *(int*)rnode->sysctl_data = t / IEEE80211_INACT_WAIT; 94 95 return (0); 96 } 97 98 static int 99 ieee80211_sysctl_parent(SYSCTLFN_ARGS) 100 { 101 struct ieee80211com *ic; 102 char pname[IFNAMSIZ]; 103 struct sysctlnode node; 104 105 node = *rnode; 106 ic = node.sysctl_data; 107 strncpy(pname, ic->ic_ifp->if_xname, IFNAMSIZ); 108 node.sysctl_data = pname; 109 return sysctl_lookup(SYSCTLFN_CALL(&node)); 110 } 111 112 /* 113 * Create or get top of sysctl tree net.link.ieee80211. 114 */ 115 static const struct sysctlnode * 116 ieee80211_sysctl_treetop(struct sysctllog **log) 117 { 118 int rc; 119 const struct sysctlnode *rnode; 120 121 if ((rc = sysctl_createv(log, 0, NULL, &rnode, 122 CTLFLAG_PERMANENT, CTLTYPE_NODE, "net", NULL, 123 NULL, 0, NULL, 0, CTL_NET, CTL_EOL)) != 0) 124 goto err; 125 126 if ((rc = sysctl_createv(log, 0, &rnode, &rnode, 127 CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", 128 "link-layer statistics and controls", 129 NULL, 0, NULL, 0, PF_LINK, CTL_EOL)) != 0) 130 goto err; 131 132 if ((rc = sysctl_createv(log, 0, &rnode, &rnode, 133 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", 134 "IEEE 802.11 WLAN statistics and controls", 135 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 136 goto err; 137 138 return rnode; 139 err: 140 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 141 return NULL; 142 } 143 144 void 145 ieee80211_sysctl_attach(struct ieee80211com *ic) 146 { 147 int rc; 148 const struct sysctlnode *cnode, *rnode; 149 char num[sizeof("vap") + 14]; /* sufficient for 32 bits */ 150 151 if ((rnode = ieee80211_sysctl_treetop(NULL)) == NULL) 152 return; 153 154 snprintf(num, sizeof(num), "vap%u", ic->ic_vap); 155 156 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &rnode, 157 CTLFLAG_PERMANENT, CTLTYPE_NODE, num, SYSCTL_DESCR("virtual AP"), 158 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 159 goto err; 160 161 /* control debugging printfs */ 162 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 163 CTLFLAG_PERMANENT|CTLFLAG_READONLY, CTLTYPE_STRING, 164 "parent", SYSCTL_DESCR("parent device"), 165 ieee80211_sysctl_parent, 0, ic, IFNAMSIZ, CTL_CREATE, 166 CTL_EOL)) != 0) 167 goto err; 168 169 #ifdef IEEE80211_DEBUG 170 /* control debugging printfs */ 171 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 172 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 173 "debug", SYSCTL_DESCR("control debugging printfs"), 174 NULL, ieee80211_debug, &ic->ic_debug, 0, 175 CTL_CREATE, CTL_EOL)) != 0) 176 goto err; 177 #endif 178 /* XXX inherit from tunables */ 179 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 180 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 181 "inact_run", SYSCTL_DESCR("station inactivity timeout (sec)"), 182 ieee80211_sysctl_inact, 0, &ic->ic_inact_run, 0, 183 CTL_CREATE, CTL_EOL)) != 0) 184 goto err; 185 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 186 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 187 "inact_probe", 188 SYSCTL_DESCR("station inactivity probe timeout (sec)"), 189 ieee80211_sysctl_inact, 0, &ic->ic_inact_probe, 0, 190 CTL_CREATE, CTL_EOL)) != 0) 191 goto err; 192 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 193 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 194 "inact_auth", 195 SYSCTL_DESCR("station authentication timeout (sec)"), 196 ieee80211_sysctl_inact, 0, &ic->ic_inact_auth, 0, 197 CTL_CREATE, CTL_EOL)) != 0) 198 goto err; 199 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 200 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 201 "inact_init", 202 SYSCTL_DESCR("station initial state timeout (sec)"), 203 ieee80211_sysctl_inact, 0, &ic->ic_inact_init, 0, 204 CTL_CREATE, CTL_EOL)) != 0) 205 goto err; 206 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 207 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 208 "driver_caps", SYSCTL_DESCR("driver capabilities"), 209 NULL, 0, &ic->ic_caps, 0, CTL_CREATE, CTL_EOL)) != 0) 210 goto err; 211 212 return; 213 err: 214 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 215 } 216 217 void 218 ieee80211_sysctl_detach(struct ieee80211com *ic) 219 { 220 sysctl_teardown(&ic->ic_sysctllog); 221 } 222 223 /* 224 * Pointers for testing: 225 * 226 * If there are no interfaces, or else no 802.11 interfaces, 227 * ieee80211_node_walkfirst must return NULL. 228 * 229 * If there is any single 802.11 interface, ieee80211_node_walkfirst 230 * must not return NULL. 231 */ 232 static struct ieee80211_node * 233 ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, u_short if_index) 234 { 235 (void)memset(nw, 0, sizeof(*nw)); 236 237 nw->nw_ifindex = if_index; 238 239 LIST_FOREACH(nw->nw_ic, &ieee80211com_head, ic_list) { 240 if (if_index != 0 && nw->nw_ic->ic_ifp->if_index != if_index) 241 continue; 242 if (!TAILQ_EMPTY(&nw->nw_ic->ic_sta.nt_node)) 243 nw->nw_nt = &nw->nw_ic->ic_sta; 244 else if (!TAILQ_EMPTY(&nw->nw_ic->ic_scan.nt_node)) 245 nw->nw_nt = &nw->nw_ic->ic_scan; 246 else if (nw->nw_ic->ic_bss == NULL) 247 continue; 248 break; 249 } 250 251 if (nw->nw_ic == NULL) 252 return NULL; 253 254 if (nw->nw_nt == NULL) 255 nw->nw_ni = nw->nw_ic->ic_bss; 256 else 257 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 258 259 return nw->nw_ni; 260 } 261 262 static struct ieee80211_node * 263 ieee80211_node_walknext(struct ieee80211_node_walk *nw) 264 { 265 if (nw->nw_nt != NULL) 266 nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); 267 else 268 nw->nw_ni = NULL; 269 270 while (nw->nw_ni == NULL) { 271 if (nw->nw_nt == &nw->nw_ic->ic_sta) { 272 nw->nw_nt = &nw->nw_ic->ic_scan; 273 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 274 continue; 275 } else if (nw->nw_nt == &nw->nw_ic->ic_scan) { 276 nw->nw_nt = NULL; 277 nw->nw_ni = nw->nw_ic->ic_bss; 278 continue; 279 } 280 KASSERT(nw->nw_nt == NULL); 281 if (nw->nw_ifindex != 0) 282 return NULL; 283 284 nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); 285 if (nw->nw_ic == NULL) 286 return NULL; 287 288 nw->nw_nt = &nw->nw_ic->ic_sta; 289 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 290 } 291 292 return nw->nw_ni; 293 } 294 295 static void 296 ieee80211_sysctl_fill_node(struct ieee80211_node *ni, 297 struct ieee80211_node_sysctl *ns, int ifindex, 298 struct ieee80211_channel *chan0, int is_bss) 299 { 300 ns->ns_ifindex = ifindex; 301 ns->ns_capinfo = ni->ni_capinfo; 302 ns->ns_flags = (is_bss) ? IEEE80211_NODE_SYSCTL_F_BSS : 0; 303 (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); 304 (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); 305 if (ni->ni_chan != IEEE80211_CHAN_ANYC) { 306 ns->ns_freq = ni->ni_chan->ic_freq; 307 ns->ns_chanflags = ni->ni_chan->ic_flags; 308 ns->ns_chanidx = ni->ni_chan - chan0; 309 } else { 310 ns->ns_freq = ns->ns_chanflags = 0; 311 ns->ns_chanidx = 0; 312 } 313 ns->ns_rssi = ni->ni_rssi; 314 ns->ns_esslen = ni->ni_esslen; 315 (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); 316 ns->ns_erp = ni->ni_erp; 317 ns->ns_associd = ni->ni_associd; 318 ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; 319 ns->ns_rstamp = ni->ni_rstamp; 320 ns->ns_rates = ni->ni_rates; 321 ns->ns_txrate = ni->ni_txrate; 322 ns->ns_intval = ni->ni_intval; 323 (void)memcpy(ns->ns_tstamp, &ni->ni_tstamp, sizeof(ns->ns_tstamp)); 324 ns->ns_txseq = ni->ni_txseqs[0]; 325 ns->ns_rxseq = ni->ni_rxseqs[0]; 326 ns->ns_fhdwell = ni->ni_fhdwell; 327 ns->ns_fhindex = ni->ni_fhindex; 328 ns->ns_fails = ni->ni_fails; 329 } 330 331 /* Between two examinations of the sysctl tree, I expect each 332 * interface to add no more than 5 nodes. 333 */ 334 #define IEEE80211_SYSCTL_NODE_GROWTH 5 335 336 static int 337 ieee80211_sysctl_node(SYSCTLFN_ARGS) 338 { 339 struct ieee80211_node_walk nw; 340 struct ieee80211_node *ni; 341 struct ieee80211_node_sysctl ns; 342 char *dp; 343 u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; 344 size_t len, needed, eltsize, out_size; 345 int error, s, nelt; 346 347 if (namelen == 1 && name[0] == CTL_QUERY) 348 return (sysctl_query(SYSCTLFN_CALL(rnode))); 349 350 if (namelen != IEEE80211_SYSCTL_NODENAMELEN) 351 return (EINVAL); 352 353 /* ifindex.op.arg.header-type.eltsize.nelt */ 354 dp = oldp; 355 len = (oldp != NULL) ? *oldlenp : 0; 356 ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; 357 op = name[IEEE80211_SYSCTL_NODENAME_OP]; 358 arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; 359 hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; 360 eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; 361 nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; 362 out_size = MIN(sizeof(ns), eltsize); 363 364 if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || 365 hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) 366 return (EINVAL); 367 368 error = 0; 369 needed = 0; 370 ifcount = 0; 371 last_ifindex = 0; 372 373 s = splnet(); 374 375 for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; 376 ni = ieee80211_node_walknext(&nw)) { 377 struct ieee80211com *ic; 378 379 ic = nw.nw_ic; 380 cur_ifindex = ic->ic_ifp->if_index; 381 382 if (cur_ifindex != last_ifindex) { 383 ifcount++; 384 last_ifindex = cur_ifindex; 385 } 386 387 if (nelt <= 0) 388 continue; 389 390 if (len >= eltsize) { 391 ieee80211_sysctl_fill_node(ni, &ns, cur_ifindex, 392 &ic->ic_channels[0], ni == ic->ic_bss); 393 error = copyout(&ns, dp, out_size); 394 if (error) 395 goto cleanup; 396 dp += eltsize; 397 len -= eltsize; 398 } 399 needed += eltsize; 400 if (nelt != INT_MAX) 401 nelt--; 402 } 403 cleanup: 404 splx(s); 405 406 *oldlenp = needed; 407 if (oldp == NULL) 408 *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; 409 410 return (error); 411 } 412 413 /* 414 * Setup sysctl(3) MIB, net.ieee80211.* 415 * 416 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 417 */ 418 SYSCTL_SETUP(sysctl_ieee80211, "sysctl ieee80211 subtree setup") 419 { 420 int rc; 421 const struct sysctlnode *cnode, *rnode; 422 423 if ((rnode = ieee80211_sysctl_treetop(clog)) == NULL) 424 return; 425 426 if ((rc = sysctl_createv(clog, 0, &rnode, NULL, 427 CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", 428 ieee80211_sysctl_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 429 goto err; 430 431 #ifdef IEEE80211_DEBUG 432 /* control debugging printfs */ 433 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 434 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 435 "debug", SYSCTL_DESCR("control debugging printfs"), 436 NULL, 0, &ieee80211_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 437 goto err; 438 #endif /* IEEE80211_DEBUG */ 439 440 return; 441 err: 442 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 443 } 444 445 int 446 ieee80211_node_dectestref(struct ieee80211_node *ni) 447 { 448 int rc, s; 449 s = splnet(); 450 if (--ni->ni_refcnt == 0) { 451 rc = 1; 452 ni->ni_refcnt = 1; 453 } else 454 rc = 0; 455 splx(s); 456 return rc; 457 } 458 459 void 460 if_printf(struct ifnet *ifp, const char *fmt, ...) 461 { 462 va_list ap; 463 va_start(ap, fmt); 464 465 printf("%s: ", ifp->if_xname); 466 vprintf(fmt, ap); 467 468 va_end(ap); 469 return; 470 } 471 472 struct mbuf * 473 m_getcl(int how, int type, int flags) 474 { 475 struct mbuf *m; 476 477 if ((flags & M_PKTHDR) != 0) 478 MGETHDR(m, how, type); 479 else 480 MGET(m, how, type); 481 482 if (m == NULL) 483 return NULL; 484 485 MCLGET(m, flags); 486 487 if ((m->m_flags & M_EXT) == 0) { 488 m_free(m); 489 return NULL; 490 } 491 return m; 492 } 493 494 /* 495 * Append the specified data to the indicated mbuf chain, 496 * Extend the mbuf chain if the new data does not fit in 497 * existing space. 498 * 499 * Return 1 if able to complete the job; otherwise 0. 500 */ 501 int 502 m_append(struct mbuf *m0, int len, caddr_t cp) 503 { 504 struct mbuf *m, *n; 505 int remainder, space; 506 507 for (m = m0; m->m_next != NULL; m = m->m_next) 508 ; 509 remainder = len; 510 space = M_TRAILINGSPACE(m); 511 if (space > 0) { 512 /* 513 * Copy into available space. 514 */ 515 if (space > remainder) 516 space = remainder; 517 memmove(mtod(m, caddr_t) + m->m_len, cp, space); 518 m->m_len += space; 519 cp += space, remainder -= space; 520 } 521 while (remainder > 0) { 522 /* 523 * Allocate a new mbuf; could check space 524 * and allocate a cluster instead. 525 */ 526 n = m_get(M_DONTWAIT, m->m_type); 527 if (n == NULL) 528 break; 529 n->m_len = min(MLEN, remainder); 530 memmove(mtod(n, caddr_t), cp, n->m_len); 531 cp += n->m_len, remainder -= n->m_len; 532 m->m_next = n; 533 m = n; 534 } 535 if (m0->m_flags & M_PKTHDR) 536 m0->m_pkthdr.len += len - remainder; 537 return (remainder == 0); 538 } 539 540 /* 541 * Allocate and setup a management frame of the specified 542 * size. We return the mbuf and a pointer to the start 543 * of the contiguous data area that's been reserved based 544 * on the packet length. The data area is forced to 32-bit 545 * alignment and the buffer length to a multiple of 4 bytes. 546 * This is done mainly so beacon frames (that require this) 547 * can use this interface too. 548 */ 549 struct mbuf * 550 ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen) 551 { 552 struct mbuf *m; 553 u_int len; 554 555 /* 556 * NB: we know the mbuf routines will align the data area 557 * so we don't need to do anything special. 558 */ 559 /* XXX 4-address frame? */ 560 len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4); 561 IASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 562 if (len <= MHLEN) { 563 m = m_gethdr(M_NOWAIT, MT_HEADER); 564 /* 565 * Align the data in case additional headers are added. 566 * This should only happen when a WEP header is added 567 * which only happens for shared key authentication mgt 568 * frames which all fit in MHLEN. 569 */ 570 if (m != NULL) 571 MH_ALIGN(m, len); 572 } else 573 m = m_getcl(M_NOWAIT, MT_HEADER, M_PKTHDR); 574 if (m != NULL) { 575 m->m_data += sizeof(struct ieee80211_frame); 576 *frm = m->m_data; 577 } 578 return m; 579 } 580 581 void 582 get_random_bytes(void *p, size_t n) 583 { 584 u_int8_t *dp = p; 585 586 while (n > 0) { 587 u_int32_t v = arc4random(); 588 size_t nb = n > sizeof(u_int32_t) ? sizeof(u_int32_t) : n; 589 (void)memcpy(dp, &v, nb); 590 dp += sizeof(u_int32_t), n -= nb; 591 } 592 } 593 594 void 595 ieee80211_notify_node_join(struct ieee80211com *ic, struct ieee80211_node *ni, int newassoc) 596 { 597 struct ifnet *ifp = ic->ic_ifp; 598 struct ieee80211_join_event iev; 599 600 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%s: %snode %s join\n", 601 ifp->if_xname, (ni == ic->ic_bss) ? "bss " : "", 602 ether_sprintf(ni->ni_macaddr)); 603 604 if (ni == ic->ic_bss) { 605 memset(&iev, 0, sizeof(iev)); 606 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_bssid); 607 rt_ieee80211msg(ifp, newassoc ? 608 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, 609 &iev, sizeof(iev)); 610 if_link_state_change(ifp, LINK_STATE_UP); 611 } else if (newassoc) { 612 /* fire off wireless event only for new station */ 613 memset(&iev, 0, sizeof(iev)); 614 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 615 rt_ieee80211msg(ifp, RTM_IEEE80211_JOIN, &iev, sizeof(iev)); 616 } 617 } 618 619 void 620 ieee80211_notify_node_leave(struct ieee80211com *ic, struct ieee80211_node *ni) 621 { 622 struct ifnet *ifp = ic->ic_ifp; 623 struct ieee80211_leave_event iev; 624 625 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%s: %snode %s leave\n", 626 ifp->if_xname, (ni == ic->ic_bss) ? "bss " : "", 627 ether_sprintf(ni->ni_macaddr)); 628 629 if (ni == ic->ic_bss) { 630 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 631 if_link_state_change(ifp, LINK_STATE_DOWN); 632 } else { 633 /* fire off wireless event station leaving */ 634 memset(&iev, 0, sizeof(iev)); 635 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 636 rt_ieee80211msg(ifp, RTM_IEEE80211_LEAVE, &iev, sizeof(iev)); 637 } 638 } 639 640 void 641 ieee80211_notify_scan_done(struct ieee80211com *ic) 642 { 643 struct ifnet *ifp = ic->ic_ifp; 644 645 IEEE80211_DPRINTF(ic, IEEE80211_MSG_SCAN, 646 "%s: notify scan done\n", ic->ic_ifp->if_xname); 647 648 /* dispatch wireless event indicating scan completed */ 649 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 650 } 651 652 void 653 ieee80211_notify_replay_failure(struct ieee80211com *ic, 654 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 655 u_int64_t rsc) 656 { 657 struct ifnet *ifp = ic->ic_ifp; 658 659 IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, 660 "[%s] %s replay detected <rsc %ju, csc %ju, keyix %u>\n", 661 ether_sprintf(wh->i_addr2), k->wk_cipher->ic_name, 662 (intmax_t) rsc, (intmax_t) k->wk_keyrsc, k->wk_keyix); 663 664 if (ifp != NULL) { /* NB: for cipher test modules */ 665 struct ieee80211_replay_event iev; 666 667 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 668 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 669 iev.iev_cipher = k->wk_cipher->ic_cipher; 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
Indexes created Fri Sep 26 20:09:58 GMT 2025