ieee80211_freebsd.c revision 192468
1/*- 2 * Copyright (c) 2003-2009 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_freebsd.c 192468 2009-05-20 20:00:40Z sam $"); 28 29/* 30 * IEEE 802.11 support (FreeBSD-specific code) 31 */ 32#include "opt_wlan.h" 33 34#include <sys/param.h> 35#include <sys/kernel.h> 36#include <sys/systm.h> 37#include <sys/linker.h> 38#include <sys/mbuf.h> 39#include <sys/module.h> 40#include <sys/proc.h> 41#include <sys/sysctl.h> 42 43#include <sys/socket.h> 44#include <sys/vimage.h> 45 46#include <net/bpf.h> 47#include <net/if.h> 48#include <net/if_dl.h> 49#include <net/if_clone.h> 50#include <net/if_media.h> 51#include <net/if_types.h> 52#include <net/ethernet.h> 53#include <net/route.h> 54 55#include <net80211/ieee80211_var.h> 56 57SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters"); 58 59#ifdef IEEE80211_DEBUG 60int ieee80211_debug = 0; 61SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug, 62 0, "debugging printfs"); 63#endif 64extern int ieee80211_recv_bar_ena; 65SYSCTL_INT(_net_wlan, OID_AUTO, recv_bar, CTLFLAG_RW, &ieee80211_recv_bar_ena, 66 0, "BAR frame processing (ena/dis)"); 67extern int ieee80211_nol_timeout; 68SYSCTL_INT(_net_wlan, OID_AUTO, nol_timeout, CTLFLAG_RW, 69 &ieee80211_nol_timeout, 0, "NOL timeout (secs)"); 70extern int ieee80211_cac_timeout; 71SYSCTL_INT(_net_wlan, OID_AUTO, cac_timeout, CTLFLAG_RW, 72 &ieee80211_cac_timeout, 0, "CAC timeout (secs)"); 73 74MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state"); 75 76/* 77 * Allocate/free com structure in conjunction with ifnet; 78 * these routines are registered with if_register_com_alloc 79 * below and are called automatically by the ifnet code 80 * when the ifnet of the parent device is created. 81 */ 82static void * 83wlan_alloc(u_char type, struct ifnet *ifp) 84{ 85 struct ieee80211com *ic; 86 87 ic = malloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO); 88 ic->ic_ifp = ifp; 89 90 return (ic); 91} 92 93static void 94wlan_free(void *ic, u_char type) 95{ 96 free(ic, M_80211_COM); 97} 98 99static int 100wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params) 101{ 102 struct ieee80211_clone_params cp; 103 struct ieee80211vap *vap; 104 struct ieee80211com *ic; 105 struct ifnet *ifp; 106 int error; 107 108 error = copyin(params, &cp, sizeof(cp)); 109 if (error) 110 return error; 111 ifp = ifunit(cp.icp_parent); 112 if (ifp == NULL) 113 return ENXIO; 114 /* XXX move printfs to DIAGNOSTIC before release */ 115 if (ifp->if_type != IFT_IEEE80211) { 116 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__); 117 return ENXIO; 118 } 119 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) { 120 if_printf(ifp, "%s: invalid opmode %d\n", 121 __func__, cp.icp_opmode); 122 return EINVAL; 123 } 124 ic = ifp->if_l2com; 125 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) { 126 if_printf(ifp, "%s mode not supported\n", 127 ieee80211_opmode_name[cp.icp_opmode]); 128 return EOPNOTSUPP; 129 } 130 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) && 131#ifdef IEEE80211_SUPPORT_TDMA 132 (ic->ic_caps & IEEE80211_C_TDMA) == 0 133#else 134 (1) 135#endif 136 ) { 137 if_printf(ifp, "TDMA not supported\n"); 138 return EOPNOTSUPP; 139 } 140 vap = ic->ic_vap_create(ic, ifc->ifc_name, unit, 141 cp.icp_opmode, cp.icp_flags, cp.icp_bssid, 142 cp.icp_flags & IEEE80211_CLONE_MACADDR ? 143 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp)); 144 return (vap == NULL ? EIO : 0); 145} 146 147static void 148wlan_clone_destroy(struct ifnet *ifp) 149{ 150 struct ieee80211vap *vap = ifp->if_softc; 151 struct ieee80211com *ic = vap->iv_ic; 152 153 ic->ic_vap_delete(vap); 154} 155IFC_SIMPLE_DECLARE(wlan, 0); 156 157void 158ieee80211_vap_destroy(struct ieee80211vap *vap) 159{ 160 if_clone_destroyif(&wlan_cloner, vap->iv_ifp); 161} 162 163static int 164ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) 165{ 166 int msecs = ticks_to_msecs(*(int *)arg1); 167 int error, t; 168 169 error = sysctl_handle_int(oidp, &msecs, 0, req); 170 if (error || !req->newptr) 171 return error; 172 t = msecs_to_ticks(msecs); 173 *(int *)arg1 = (t < 1) ? 1 : t; 174 return 0; 175} 176 177#ifdef IEEE80211_AMPDU_AGE 178extern int ieee80211_ampdu_age; 179SYSCTL_PROC(_net_wlan, OID_AUTO, ampdu_age, CTLTYPE_INT | CTLFLAG_RW, 180 &ieee80211_ampdu_age, 0, ieee80211_sysctl_msecs_ticks, "I", 181 "AMPDU max reorder age (ms)"); 182#endif 183extern int ieee80211_addba_timeout; 184SYSCTL_PROC(_net_wlan, OID_AUTO, addba_timeout, CTLTYPE_INT | CTLFLAG_RW, 185 &ieee80211_addba_timeout, 0, ieee80211_sysctl_msecs_ticks, "I", 186 "ADDBA request timeout (ms)"); 187extern int ieee80211_addba_backoff; 188SYSCTL_PROC(_net_wlan, OID_AUTO, addba_backoff, CTLTYPE_INT | CTLFLAG_RW, 189 &ieee80211_addba_backoff, 0, ieee80211_sysctl_msecs_ticks, "I", 190 "ADDBA request backoff (ms)"); 191extern int ieee80211_addba_maxtries; 192SYSCTL_INT(_net_wlan, OID_AUTO, addba_maxtries, CTLTYPE_INT | CTLFLAG_RW, 193 &ieee80211_addba_maxtries, 0, "max ADDBA requests sent before backoff"); 194#ifdef IEEE80211_SUPPORT_SUPERG 195extern int ieee80211_ffppsmin; 196SYSCTL_INT(_net_wlan, OID_AUTO, ffppsmin, CTLTYPE_INT | CTLFLAG_RW, 197 &ieee80211_ffppsmin, 0, "min packet rate before fast-frame staging"); 198extern int ieee80211_ffagemax; 199SYSCTL_PROC(_net_wlan, OID_AUTO, ffagemax, CTLTYPE_INT | CTLFLAG_RW, 200 &ieee80211_ffagemax, 0, ieee80211_sysctl_msecs_ticks, "I", 201 "max hold time for fast-frame staging (ms)"); 202#endif /* IEEE80211_SUPPORT_SUPERG */ 203 204static int 205ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) 206{ 207 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT; 208 int error; 209 210 error = sysctl_handle_int(oidp, &inact, 0, req); 211 if (error || !req->newptr) 212 return error; 213 *(int *)arg1 = inact / IEEE80211_INACT_WAIT; 214 return 0; 215} 216 217static int 218ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS) 219{ 220 struct ieee80211com *ic = arg1; 221 const char *name = ic->ic_ifp->if_xname; 222 223 return SYSCTL_OUT(req, name, strlen(name)); 224} 225 226static int 227ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS) 228{ 229 struct ieee80211com *ic = arg1; 230 int t = 0, error; 231 232 error = sysctl_handle_int(oidp, &t, 0, req); 233 if (error || !req->newptr) 234 return error; 235 IEEE80211_LOCK(ic); 236 ieee80211_dfs_notify_radar(ic, ic->ic_curchan); 237 IEEE80211_UNLOCK(ic); 238 return 0; 239} 240 241void 242ieee80211_sysctl_attach(struct ieee80211com *ic) 243{ 244} 245 246void 247ieee80211_sysctl_detach(struct ieee80211com *ic) 248{ 249} 250 251void 252ieee80211_sysctl_vattach(struct ieee80211vap *vap) 253{ 254 struct ifnet *ifp = vap->iv_ifp; 255 struct sysctl_ctx_list *ctx; 256 struct sysctl_oid *oid; 257 char num[14]; /* sufficient for 32 bits */ 258 259 ctx = (struct sysctl_ctx_list *) malloc(sizeof(struct sysctl_ctx_list), 260 M_DEVBUF, M_NOWAIT | M_ZERO); 261 if (ctx == NULL) { 262 if_printf(ifp, "%s: cannot allocate sysctl context!\n", 263 __func__); 264 return; 265 } 266 sysctl_ctx_init(ctx); 267 snprintf(num, sizeof(num), "%u", ifp->if_dunit); 268 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan), 269 OID_AUTO, num, CTLFLAG_RD, NULL, ""); 270 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 271 "%parent", CTLFLAG_RD, vap->iv_ic, 0, 272 ieee80211_sysctl_parent, "A", "parent device"); 273 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 274 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0, 275 "driver capabilities"); 276#ifdef IEEE80211_DEBUG 277 vap->iv_debug = ieee80211_debug; 278 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 279 "debug", CTLFLAG_RW, &vap->iv_debug, 0, 280 "control debugging printfs"); 281#endif 282 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 283 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0, 284 "consecutive beacon misses before scanning"); 285 /* XXX inherit from tunables */ 286 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 287 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0, 288 ieee80211_sysctl_inact, "I", 289 "station inactivity timeout (sec)"); 290 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 291 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0, 292 ieee80211_sysctl_inact, "I", 293 "station inactivity probe timeout (sec)"); 294 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 295 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0, 296 ieee80211_sysctl_inact, "I", 297 "station authentication timeout (sec)"); 298 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 299 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0, 300 ieee80211_sysctl_inact, "I", 301 "station initial state timeout (sec)"); 302 if (vap->iv_htcaps & IEEE80211_HTC_HT) { 303 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 304 "ampdu_mintraffic_bk", CTLFLAG_RW, 305 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0, 306 "BK traffic tx aggr threshold (pps)"); 307 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 308 "ampdu_mintraffic_be", CTLFLAG_RW, 309 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0, 310 "BE traffic tx aggr threshold (pps)"); 311 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 312 "ampdu_mintraffic_vo", CTLFLAG_RW, 313 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0, 314 "VO traffic tx aggr threshold (pps)"); 315 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 316 "ampdu_mintraffic_vi", CTLFLAG_RW, 317 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0, 318 "VI traffic tx aggr threshold (pps)"); 319 } 320 if (vap->iv_caps & IEEE80211_C_DFS) { 321 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 322 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0, 323 ieee80211_sysctl_radar, "I", "simulare radar event"); 324 } 325 vap->iv_sysctl = ctx; 326 vap->iv_oid = oid; 327} 328 329void 330ieee80211_sysctl_vdetach(struct ieee80211vap *vap) 331{ 332 333 if (vap->iv_sysctl != NULL) { 334 sysctl_ctx_free(vap->iv_sysctl); 335 free(vap->iv_sysctl, M_DEVBUF); 336 vap->iv_sysctl = NULL; 337 } 338} 339 340int 341ieee80211_node_dectestref(struct ieee80211_node *ni) 342{ 343 /* XXX need equivalent of atomic_dec_and_test */ 344 atomic_subtract_int(&ni->ni_refcnt, 1); 345 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1); 346} 347 348void 349ieee80211_drain_ifq(struct ifqueue *ifq) 350{ 351 struct ieee80211_node *ni; 352 struct mbuf *m; 353 354 for (;;) { 355 IF_DEQUEUE(ifq, m); 356 if (m == NULL) 357 break; 358 359 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 360 KASSERT(ni != NULL, ("frame w/o node")); 361 ieee80211_free_node(ni); 362 m->m_pkthdr.rcvif = NULL; 363 364 m_freem(m); 365 } 366} 367 368void 369ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap) 370{ 371 struct ieee80211_node *ni; 372 struct mbuf *m, **mprev; 373 374 IF_LOCK(ifq); 375 mprev = &ifq->ifq_head; 376 while ((m = *mprev) != NULL) { 377 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 378 if (ni != NULL && ni->ni_vap == vap) { 379 *mprev = m->m_nextpkt; /* remove from list */ 380 ifq->ifq_len--; 381 382 m_freem(m); 383 ieee80211_free_node(ni); /* reclaim ref */ 384 } else 385 mprev = &m->m_nextpkt; 386 } 387 /* recalculate tail ptr */ 388 m = ifq->ifq_head; 389 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt) 390 ; 391 ifq->ifq_tail = m; 392 IF_UNLOCK(ifq); 393} 394 395/* 396 * As above, for mbufs allocated with m_gethdr/MGETHDR 397 * or initialized by M_COPY_PKTHDR. 398 */ 399#define MC_ALIGN(m, len) \ 400do { \ 401 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \ 402} while (/* CONSTCOND */ 0) 403 404/* 405 * Allocate and setup a management frame of the specified 406 * size. We return the mbuf and a pointer to the start 407 * of the contiguous data area that's been reserved based 408 * on the packet length. The data area is forced to 32-bit 409 * alignment and the buffer length to a multiple of 4 bytes. 410 * This is done mainly so beacon frames (that require this) 411 * can use this interface too. 412 */ 413struct mbuf * 414ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen) 415{ 416 struct mbuf *m; 417 u_int len; 418 419 /* 420 * NB: we know the mbuf routines will align the data area 421 * so we don't need to do anything special. 422 */ 423 len = roundup2(headroom + pktlen, 4); 424 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 425 if (len < MINCLSIZE) { 426 m = m_gethdr(M_NOWAIT, MT_DATA); 427 /* 428 * Align the data in case additional headers are added. 429 * This should only happen when a WEP header is added 430 * which only happens for shared key authentication mgt 431 * frames which all fit in MHLEN. 432 */ 433 if (m != NULL) 434 MH_ALIGN(m, len); 435 } else { 436 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 437 if (m != NULL) 438 MC_ALIGN(m, len); 439 } 440 if (m != NULL) { 441 m->m_data += headroom; 442 *frm = m->m_data; 443 } 444 return m; 445} 446 447int 448ieee80211_add_callback(struct mbuf *m, 449 void (*func)(struct ieee80211_node *, void *, int), void *arg) 450{ 451 struct m_tag *mtag; 452 struct ieee80211_cb *cb; 453 454 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, 455 sizeof(struct ieee80211_cb), M_NOWAIT); 456 if (mtag == NULL) 457 return 0; 458 459 cb = (struct ieee80211_cb *)(mtag+1); 460 cb->func = func; 461 cb->arg = arg; 462 m_tag_prepend(m, mtag); 463 m->m_flags |= M_TXCB; 464 return 1; 465} 466 467void 468ieee80211_process_callback(struct ieee80211_node *ni, 469 struct mbuf *m, int status) 470{ 471 struct m_tag *mtag; 472 473 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL); 474 if (mtag != NULL) { 475 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1); 476 cb->func(ni, cb->arg, status); 477 } 478} 479 480#include <sys/libkern.h> 481 482void 483get_random_bytes(void *p, size_t n) 484{ 485 uint8_t *dp = p; 486 487 while (n > 0) { 488 uint32_t v = arc4random(); 489 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n; 490 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n); 491 dp += sizeof(uint32_t), n -= nb; 492 } 493} 494 495/* 496 * Helper function for events that pass just a single mac address. 497 */ 498static void 499notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN]) 500{ 501 struct ieee80211_join_event iev; 502 503 CURVNET_SET(ifp->if_vnet); 504 memset(&iev, 0, sizeof(iev)); 505 IEEE80211_ADDR_COPY(iev.iev_addr, mac); 506 rt_ieee80211msg(ifp, op, &iev, sizeof(iev)); 507 CURVNET_RESTORE(); 508} 509 510void 511ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) 512{ 513 struct ieee80211vap *vap = ni->ni_vap; 514 struct ifnet *ifp = vap->iv_ifp; 515 516 CURVNET_SET_QUIET(ifp->if_vnet); 517 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join", 518 (ni == vap->iv_bss) ? "bss " : ""); 519 520 if (ni == vap->iv_bss) { 521 notify_macaddr(ifp, newassoc ? 522 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid); 523 if_link_state_change(ifp, LINK_STATE_UP); 524 } else { 525 notify_macaddr(ifp, newassoc ? 526 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr); 527 } 528 CURVNET_RESTORE(); 529} 530 531void 532ieee80211_notify_node_leave(struct ieee80211_node *ni) 533{ 534 struct ieee80211vap *vap = ni->ni_vap; 535 struct ifnet *ifp = vap->iv_ifp; 536 537 CURVNET_SET_QUIET(ifp->if_vnet); 538 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave", 539 (ni == vap->iv_bss) ? "bss " : ""); 540 541 if (ni == vap->iv_bss) { 542 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 543 if_link_state_change(ifp, LINK_STATE_DOWN); 544 } else { 545 /* fire off wireless event station leaving */ 546 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr); 547 } 548 CURVNET_RESTORE(); 549} 550 551void 552ieee80211_notify_scan_done(struct ieee80211vap *vap) 553{ 554 struct ifnet *ifp = vap->iv_ifp; 555 556 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); 557 558 /* dispatch wireless event indicating scan completed */ 559 CURVNET_SET(ifp->if_vnet); 560 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 561 CURVNET_RESTORE(); 562} 563 564void 565ieee80211_notify_replay_failure(struct ieee80211vap *vap, 566 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 567 u_int64_t rsc) 568{ 569 struct ifnet *ifp = vap->iv_ifp; 570 571 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 572 "%s replay detected <rsc %ju, csc %ju, keyix %u rxkeyix %u>", 573 k->wk_cipher->ic_name, (intmax_t) rsc, 574 (intmax_t) k->wk_keyrsc[IEEE80211_NONQOS_TID], 575 k->wk_keyix, k->wk_rxkeyix); 576 577 if (ifp != NULL) { /* NB: for cipher test modules */ 578 struct ieee80211_replay_event iev; 579 580 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 581 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 582 iev.iev_cipher = k->wk_cipher->ic_cipher; 583 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 584 iev.iev_keyix = k->wk_rxkeyix; 585 else 586 iev.iev_keyix = k->wk_keyix; 587 iev.iev_keyrsc = k->wk_keyrsc[0]; /* XXX need tid */ 588 iev.iev_rsc = rsc; 589 CURVNET_SET(ifp->if_vnet); 590 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 591 CURVNET_RESTORE(); 592 } 593} 594 595void 596ieee80211_notify_michael_failure(struct ieee80211vap *vap, 597 const struct ieee80211_frame *wh, u_int keyix) 598{ 599 struct ifnet *ifp = vap->iv_ifp; 600 601 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 602 "michael MIC verification failed <keyix %u>", keyix); 603 vap->iv_stats.is_rx_tkipmic++; 604 605 if (ifp != NULL) { /* NB: for cipher test modules */ 606 struct ieee80211_michael_event iev; 607 608 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 609 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 610 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 611 iev.iev_keyix = keyix; 612 CURVNET_SET(ifp->if_vnet); 613 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 614 CURVNET_RESTORE(); 615 } 616} 617 618void 619ieee80211_notify_wds_discover(struct ieee80211_node *ni) 620{ 621 struct ieee80211vap *vap = ni->ni_vap; 622 struct ifnet *ifp = vap->iv_ifp; 623 624 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr); 625} 626 627void 628ieee80211_notify_csa(struct ieee80211com *ic, 629 const struct ieee80211_channel *c, int mode, int count) 630{ 631 struct ifnet *ifp = ic->ic_ifp; 632 struct ieee80211_csa_event iev; 633 634 memset(&iev, 0, sizeof(iev)); 635 iev.iev_flags = c->ic_flags; 636 iev.iev_freq = c->ic_freq; 637 iev.iev_ieee = c->ic_ieee; 638 iev.iev_mode = mode; 639 iev.iev_count = count; 640 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev)); 641} 642 643void 644ieee80211_notify_radar(struct ieee80211com *ic, 645 const struct ieee80211_channel *c) 646{ 647 struct ifnet *ifp = ic->ic_ifp; 648 struct ieee80211_radar_event iev; 649 650 memset(&iev, 0, sizeof(iev)); 651 iev.iev_flags = c->ic_flags; 652 iev.iev_freq = c->ic_freq; 653 iev.iev_ieee = c->ic_ieee; 654 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev)); 655} 656 657void 658ieee80211_notify_cac(struct ieee80211com *ic, 659 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type) 660{ 661 struct ifnet *ifp = ic->ic_ifp; 662 struct ieee80211_cac_event iev; 663 664 memset(&iev, 0, sizeof(iev)); 665 iev.iev_flags = c->ic_flags; 666 iev.iev_freq = c->ic_freq; 667 iev.iev_ieee = c->ic_ieee; 668 iev.iev_type = type; 669 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev)); 670} 671 672void 673ieee80211_notify_node_deauth(struct ieee80211_node *ni) 674{ 675 struct ieee80211vap *vap = ni->ni_vap; 676 struct ifnet *ifp = vap->iv_ifp; 677 678 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth"); 679 680 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr); 681} 682 683void 684ieee80211_notify_node_auth(struct ieee80211_node *ni) 685{ 686 struct ieee80211vap *vap = ni->ni_vap; 687 struct ifnet *ifp = vap->iv_ifp; 688 689 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth"); 690 691 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr); 692} 693 694void 695ieee80211_notify_country(struct ieee80211vap *vap, 696 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2]) 697{ 698 struct ifnet *ifp = vap->iv_ifp; 699 struct ieee80211_country_event iev; 700 701 memset(&iev, 0, sizeof(iev)); 702 IEEE80211_ADDR_COPY(iev.iev_addr, bssid); 703 iev.iev_cc[0] = cc[0]; 704 iev.iev_cc[1] = cc[1]; 705 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev)); 706} 707 708void 709ieee80211_notify_radio(struct ieee80211com *ic, int state) 710{ 711 struct ifnet *ifp = ic->ic_ifp; 712 struct ieee80211_radio_event iev; 713 714 memset(&iev, 0, sizeof(iev)); 715 iev.iev_state = state; 716 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev)); 717} 718 719void 720ieee80211_load_module(const char *modname) 721{ 722 723#ifdef notyet 724 (void)kern_kldload(curthread, modname, NULL); 725#else 726 printf("%s: load the %s module by hand for now.\n", __func__, modname); 727#endif 728} 729 730static eventhandler_tag wlan_bpfevent; 731 732static void 733bpf_track(void *arg, struct ifnet *ifp, int attach) 734{ 735 /* NB: identify vap's by if_start */ 736 if (ifp->if_start == ieee80211_start) { 737 struct ieee80211vap *vap = ifp->if_softc; 738 /* 739 * Track bpf radiotap listener state. We mark the vap 740 * to indicate if any listener is present and the com 741 * to indicate if any listener exists on any associated 742 * vap. This flag is used by drivers to prepare radiotap 743 * state only when needed. 744 */ 745 if (attach) 746 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF); 747 /* NB: if_softc is NULL on vap detach */ 748 else if (vap != NULL && !bpf_peers_present(vap->iv_rawbpf)) 749 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF); 750 } 751} 752 753/* 754 * Module glue. 755 * 756 * NB: the module name is "wlan" for compatibility with NetBSD. 757 */ 758static int 759wlan_modevent(module_t mod, int type, void *unused) 760{ 761 switch (type) { 762 case MOD_LOAD: 763 if (bootverbose) 764 printf("wlan: <802.11 Link Layer>\n"); 765 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track, 766 bpf_track, 0, EVENTHANDLER_PRI_ANY); 767 if (wlan_bpfevent == NULL) 768 return ENOMEM; 769 if_clone_attach(&wlan_cloner); 770 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free); 771 return 0; 772 case MOD_UNLOAD: 773 if_deregister_com_alloc(IFT_IEEE80211); 774 if_clone_detach(&wlan_cloner); 775 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 776 return 0; 777 } 778 return EINVAL; 779} 780 781static moduledata_t wlan_mod = { 782 "wlan", 783 wlan_modevent, 784 0 785}; 786DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 787MODULE_VERSION(wlan, 1); 788MODULE_DEPEND(wlan, ether, 1, 1, 1); 789