ieee80211_freebsd.c revision 242154
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 242154 2012-10-26 19:06:24Z adrian $"); 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 45#include <net/bpf.h> 46#include <net/if.h> 47#include <net/if_dl.h> 48#include <net/if_clone.h> 49#include <net/if_media.h> 50#include <net/if_types.h> 51#include <net/ethernet.h> 52#include <net/route.h> 53#include <net/vnet.h> 54 55#include <net80211/ieee80211_var.h> 56#include <net80211/ieee80211_input.h> 57 58SYSCTL_NODE(_net, OID_AUTO, wlan, CTLFLAG_RD, 0, "IEEE 80211 parameters"); 59 60#ifdef IEEE80211_DEBUG 61int ieee80211_debug = 0; 62SYSCTL_INT(_net_wlan, OID_AUTO, debug, CTLFLAG_RW, &ieee80211_debug, 63 0, "debugging printfs"); 64#endif 65 66static MALLOC_DEFINE(M_80211_COM, "80211com", "802.11 com state"); 67 68#if __FreeBSD_version >= 1000020 69static const char wlanname[] = "wlan"; 70static struct if_clone *wlan_cloner; 71#endif 72 73/* 74 * Allocate/free com structure in conjunction with ifnet; 75 * these routines are registered with if_register_com_alloc 76 * below and are called automatically by the ifnet code 77 * when the ifnet of the parent device is created. 78 */ 79static void * 80wlan_alloc(u_char type, struct ifnet *ifp) 81{ 82 struct ieee80211com *ic; 83 84 ic = malloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO); 85 ic->ic_ifp = ifp; 86 87 return (ic); 88} 89 90static void 91wlan_free(void *ic, u_char type) 92{ 93 free(ic, M_80211_COM); 94} 95 96static int 97wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params) 98{ 99 struct ieee80211_clone_params cp; 100 struct ieee80211vap *vap; 101 struct ieee80211com *ic; 102 struct ifnet *ifp; 103 int error; 104 105 error = copyin(params, &cp, sizeof(cp)); 106 if (error) 107 return error; 108 ifp = ifunit(cp.icp_parent); 109 if (ifp == NULL) 110 return ENXIO; 111 /* XXX move printfs to DIAGNOSTIC before release */ 112 if (ifp->if_type != IFT_IEEE80211) { 113 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__); 114 return ENXIO; 115 } 116 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) { 117 if_printf(ifp, "%s: invalid opmode %d\n", 118 __func__, cp.icp_opmode); 119 return EINVAL; 120 } 121 ic = ifp->if_l2com; 122 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) { 123 if_printf(ifp, "%s mode not supported\n", 124 ieee80211_opmode_name[cp.icp_opmode]); 125 return EOPNOTSUPP; 126 } 127 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) && 128#ifdef IEEE80211_SUPPORT_TDMA 129 (ic->ic_caps & IEEE80211_C_TDMA) == 0 130#else 131 (1) 132#endif 133 ) { 134 if_printf(ifp, "TDMA not supported\n"); 135 return EOPNOTSUPP; 136 } 137#if __FreeBSD_version >= 1000020 138 vap = ic->ic_vap_create(ic, wlanname, unit, 139 cp.icp_opmode, cp.icp_flags, cp.icp_bssid, 140 cp.icp_flags & IEEE80211_CLONE_MACADDR ? 141 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp)); 142#else 143 vap = ic->ic_vap_create(ic, ifc->ifc_name, unit, 144 cp.icp_opmode, cp.icp_flags, cp.icp_bssid, 145 cp.icp_flags & IEEE80211_CLONE_MACADDR ? 146 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp)); 147 148#endif 149 150 return (vap == NULL ? EIO : 0); 151} 152 153static void 154wlan_clone_destroy(struct ifnet *ifp) 155{ 156 struct ieee80211vap *vap = ifp->if_softc; 157 struct ieee80211com *ic = vap->iv_ic; 158 159 ic->ic_vap_delete(vap); 160} 161 162IFC_SIMPLE_DECLARE(wlan, 0); 163 164void 165ieee80211_vap_destroy(struct ieee80211vap *vap) 166{ 167 CURVNET_SET(vap->iv_ifp->if_vnet); 168#if __FreeBSD_version >= 1000020 169 if_clone_destroyif(wlan_cloner, vap->iv_ifp); 170#else 171 if_clone_destroyif(&wlan_cloner, vap->iv_ifp); 172#endif 173 CURVNET_RESTORE(); 174} 175 176int 177ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) 178{ 179 int msecs = ticks_to_msecs(*(int *)arg1); 180 int error, t; 181 182 error = sysctl_handle_int(oidp, &msecs, 0, req); 183 if (error || !req->newptr) 184 return error; 185 t = msecs_to_ticks(msecs); 186 *(int *)arg1 = (t < 1) ? 1 : t; 187 return 0; 188} 189 190static int 191ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) 192{ 193 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT; 194 int error; 195 196 error = sysctl_handle_int(oidp, &inact, 0, req); 197 if (error || !req->newptr) 198 return error; 199 *(int *)arg1 = inact / IEEE80211_INACT_WAIT; 200 return 0; 201} 202 203static int 204ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS) 205{ 206 struct ieee80211com *ic = arg1; 207 const char *name = ic->ic_ifp->if_xname; 208 209 return SYSCTL_OUT(req, name, strlen(name)); 210} 211 212static int 213ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS) 214{ 215 struct ieee80211com *ic = arg1; 216 int t = 0, error; 217 218 error = sysctl_handle_int(oidp, &t, 0, req); 219 if (error || !req->newptr) 220 return error; 221 IEEE80211_LOCK(ic); 222 ieee80211_dfs_notify_radar(ic, ic->ic_curchan); 223 IEEE80211_UNLOCK(ic); 224 return 0; 225} 226 227void 228ieee80211_sysctl_attach(struct ieee80211com *ic) 229{ 230} 231 232void 233ieee80211_sysctl_detach(struct ieee80211com *ic) 234{ 235} 236 237void 238ieee80211_sysctl_vattach(struct ieee80211vap *vap) 239{ 240 struct ifnet *ifp = vap->iv_ifp; 241 struct sysctl_ctx_list *ctx; 242 struct sysctl_oid *oid; 243 char num[14]; /* sufficient for 32 bits */ 244 245 ctx = (struct sysctl_ctx_list *) malloc(sizeof(struct sysctl_ctx_list), 246 M_DEVBUF, M_NOWAIT | M_ZERO); 247 if (ctx == NULL) { 248 if_printf(ifp, "%s: cannot allocate sysctl context!\n", 249 __func__); 250 return; 251 } 252 sysctl_ctx_init(ctx); 253 snprintf(num, sizeof(num), "%u", ifp->if_dunit); 254 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan), 255 OID_AUTO, num, CTLFLAG_RD, NULL, ""); 256 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 257 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0, 258 ieee80211_sysctl_parent, "A", "parent device"); 259 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 260 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0, 261 "driver capabilities"); 262#ifdef IEEE80211_DEBUG 263 vap->iv_debug = ieee80211_debug; 264 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 265 "debug", CTLFLAG_RW, &vap->iv_debug, 0, 266 "control debugging printfs"); 267#endif 268 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 269 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0, 270 "consecutive beacon misses before scanning"); 271 /* XXX inherit from tunables */ 272 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 273 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0, 274 ieee80211_sysctl_inact, "I", 275 "station inactivity timeout (sec)"); 276 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 277 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0, 278 ieee80211_sysctl_inact, "I", 279 "station inactivity probe timeout (sec)"); 280 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 281 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0, 282 ieee80211_sysctl_inact, "I", 283 "station authentication timeout (sec)"); 284 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 285 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0, 286 ieee80211_sysctl_inact, "I", 287 "station initial state timeout (sec)"); 288 if (vap->iv_htcaps & IEEE80211_HTC_HT) { 289 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 290 "ampdu_mintraffic_bk", CTLFLAG_RW, 291 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0, 292 "BK traffic tx aggr threshold (pps)"); 293 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 294 "ampdu_mintraffic_be", CTLFLAG_RW, 295 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0, 296 "BE traffic tx aggr threshold (pps)"); 297 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 298 "ampdu_mintraffic_vo", CTLFLAG_RW, 299 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0, 300 "VO traffic tx aggr threshold (pps)"); 301 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 302 "ampdu_mintraffic_vi", CTLFLAG_RW, 303 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0, 304 "VI traffic tx aggr threshold (pps)"); 305 } 306 if (vap->iv_caps & IEEE80211_C_DFS) { 307 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 308 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0, 309 ieee80211_sysctl_radar, "I", "simulate radar event"); 310 } 311 vap->iv_sysctl = ctx; 312 vap->iv_oid = oid; 313} 314 315void 316ieee80211_sysctl_vdetach(struct ieee80211vap *vap) 317{ 318 319 if (vap->iv_sysctl != NULL) { 320 sysctl_ctx_free(vap->iv_sysctl); 321 free(vap->iv_sysctl, M_DEVBUF); 322 vap->iv_sysctl = NULL; 323 } 324} 325 326int 327ieee80211_node_dectestref(struct ieee80211_node *ni) 328{ 329 /* XXX need equivalent of atomic_dec_and_test */ 330 atomic_subtract_int(&ni->ni_refcnt, 1); 331 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1); 332} 333 334void 335ieee80211_drain_ifq(struct ifqueue *ifq) 336{ 337 struct ieee80211_node *ni; 338 struct mbuf *m; 339 340 for (;;) { 341 IF_DEQUEUE(ifq, m); 342 if (m == NULL) 343 break; 344 345 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 346 KASSERT(ni != NULL, ("frame w/o node")); 347 ieee80211_free_node(ni); 348 m->m_pkthdr.rcvif = NULL; 349 350 m_freem(m); 351 } 352} 353 354void 355ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap) 356{ 357 struct ieee80211_node *ni; 358 struct mbuf *m, **mprev; 359 360 IF_LOCK(ifq); 361 mprev = &ifq->ifq_head; 362 while ((m = *mprev) != NULL) { 363 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 364 if (ni != NULL && ni->ni_vap == vap) { 365 *mprev = m->m_nextpkt; /* remove from list */ 366 ifq->ifq_len--; 367 368 m_freem(m); 369 ieee80211_free_node(ni); /* reclaim ref */ 370 } else 371 mprev = &m->m_nextpkt; 372 } 373 /* recalculate tail ptr */ 374 m = ifq->ifq_head; 375 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt) 376 ; 377 ifq->ifq_tail = m; 378 IF_UNLOCK(ifq); 379} 380 381/* 382 * As above, for mbufs allocated with m_gethdr/MGETHDR 383 * or initialized by M_COPY_PKTHDR. 384 */ 385#define MC_ALIGN(m, len) \ 386do { \ 387 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \ 388} while (/* CONSTCOND */ 0) 389 390/* 391 * Allocate and setup a management frame of the specified 392 * size. We return the mbuf and a pointer to the start 393 * of the contiguous data area that's been reserved based 394 * on the packet length. The data area is forced to 32-bit 395 * alignment and the buffer length to a multiple of 4 bytes. 396 * This is done mainly so beacon frames (that require this) 397 * can use this interface too. 398 */ 399struct mbuf * 400ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen) 401{ 402 struct mbuf *m; 403 u_int len; 404 405 /* 406 * NB: we know the mbuf routines will align the data area 407 * so we don't need to do anything special. 408 */ 409 len = roundup2(headroom + pktlen, 4); 410 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 411 if (len < MINCLSIZE) { 412 m = m_gethdr(M_NOWAIT, MT_DATA); 413 /* 414 * Align the data in case additional headers are added. 415 * This should only happen when a WEP header is added 416 * which only happens for shared key authentication mgt 417 * frames which all fit in MHLEN. 418 */ 419 if (m != NULL) 420 MH_ALIGN(m, len); 421 } else { 422 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 423 if (m != NULL) 424 MC_ALIGN(m, len); 425 } 426 if (m != NULL) { 427 m->m_data += headroom; 428 *frm = m->m_data; 429 } 430 return m; 431} 432 433/* 434 * Re-align the payload in the mbuf. This is mainly used (right now) 435 * to handle IP header alignment requirements on certain architectures. 436 */ 437struct mbuf * 438ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align) 439{ 440 int pktlen, space; 441 struct mbuf *n; 442 443 pktlen = m->m_pkthdr.len; 444 space = pktlen + align; 445 if (space < MINCLSIZE) 446 n = m_gethdr(M_DONTWAIT, MT_DATA); 447 else { 448 n = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, 449 space <= MCLBYTES ? MCLBYTES : 450#if MJUMPAGESIZE != MCLBYTES 451 space <= MJUMPAGESIZE ? MJUMPAGESIZE : 452#endif 453 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES); 454 } 455 if (__predict_true(n != NULL)) { 456 m_move_pkthdr(n, m); 457 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align); 458 m_copydata(m, 0, pktlen, mtod(n, caddr_t)); 459 n->m_len = pktlen; 460 } else { 461 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 462 mtod(m, const struct ieee80211_frame *), NULL, 463 "%s", "no mbuf to realign"); 464 vap->iv_stats.is_rx_badalign++; 465 } 466 m_freem(m); 467 return n; 468} 469 470int 471ieee80211_add_callback(struct mbuf *m, 472 void (*func)(struct ieee80211_node *, void *, int), void *arg) 473{ 474 struct m_tag *mtag; 475 struct ieee80211_cb *cb; 476 477 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, 478 sizeof(struct ieee80211_cb), M_NOWAIT); 479 if (mtag == NULL) 480 return 0; 481 482 cb = (struct ieee80211_cb *)(mtag+1); 483 cb->func = func; 484 cb->arg = arg; 485 m_tag_prepend(m, mtag); 486 m->m_flags |= M_TXCB; 487 return 1; 488} 489 490void 491ieee80211_process_callback(struct ieee80211_node *ni, 492 struct mbuf *m, int status) 493{ 494 struct m_tag *mtag; 495 496 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL); 497 if (mtag != NULL) { 498 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1); 499 cb->func(ni, cb->arg, status); 500 } 501} 502 503#include <sys/libkern.h> 504 505void 506get_random_bytes(void *p, size_t n) 507{ 508 uint8_t *dp = p; 509 510 while (n > 0) { 511 uint32_t v = arc4random(); 512 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n; 513 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n); 514 dp += sizeof(uint32_t), n -= nb; 515 } 516} 517 518/* 519 * Helper function for events that pass just a single mac address. 520 */ 521static void 522notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN]) 523{ 524 struct ieee80211_join_event iev; 525 526 CURVNET_SET(ifp->if_vnet); 527 memset(&iev, 0, sizeof(iev)); 528 IEEE80211_ADDR_COPY(iev.iev_addr, mac); 529 rt_ieee80211msg(ifp, op, &iev, sizeof(iev)); 530 CURVNET_RESTORE(); 531} 532 533void 534ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) 535{ 536 struct ieee80211vap *vap = ni->ni_vap; 537 struct ifnet *ifp = vap->iv_ifp; 538 539 CURVNET_SET_QUIET(ifp->if_vnet); 540 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join", 541 (ni == vap->iv_bss) ? "bss " : ""); 542 543 if (ni == vap->iv_bss) { 544 notify_macaddr(ifp, newassoc ? 545 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid); 546 if_link_state_change(ifp, LINK_STATE_UP); 547 } else { 548 notify_macaddr(ifp, newassoc ? 549 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr); 550 } 551 CURVNET_RESTORE(); 552} 553 554void 555ieee80211_notify_node_leave(struct ieee80211_node *ni) 556{ 557 struct ieee80211vap *vap = ni->ni_vap; 558 struct ifnet *ifp = vap->iv_ifp; 559 560 CURVNET_SET_QUIET(ifp->if_vnet); 561 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave", 562 (ni == vap->iv_bss) ? "bss " : ""); 563 564 if (ni == vap->iv_bss) { 565 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 566 if_link_state_change(ifp, LINK_STATE_DOWN); 567 } else { 568 /* fire off wireless event station leaving */ 569 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr); 570 } 571 CURVNET_RESTORE(); 572} 573 574void 575ieee80211_notify_scan_done(struct ieee80211vap *vap) 576{ 577 struct ifnet *ifp = vap->iv_ifp; 578 579 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); 580 581 /* dispatch wireless event indicating scan completed */ 582 CURVNET_SET(ifp->if_vnet); 583 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 584 CURVNET_RESTORE(); 585} 586 587void 588ieee80211_notify_replay_failure(struct ieee80211vap *vap, 589 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 590 u_int64_t rsc, int tid) 591{ 592 struct ifnet *ifp = vap->iv_ifp; 593 594 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 595 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>", 596 k->wk_cipher->ic_name, tid, (intmax_t) rsc, 597 (intmax_t) k->wk_keyrsc[tid], 598 k->wk_keyix, k->wk_rxkeyix); 599 600 if (ifp != NULL) { /* NB: for cipher test modules */ 601 struct ieee80211_replay_event iev; 602 603 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 604 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 605 iev.iev_cipher = k->wk_cipher->ic_cipher; 606 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 607 iev.iev_keyix = k->wk_rxkeyix; 608 else 609 iev.iev_keyix = k->wk_keyix; 610 iev.iev_keyrsc = k->wk_keyrsc[tid]; 611 iev.iev_rsc = rsc; 612 CURVNET_SET(ifp->if_vnet); 613 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 614 CURVNET_RESTORE(); 615 } 616} 617 618void 619ieee80211_notify_michael_failure(struct ieee80211vap *vap, 620 const struct ieee80211_frame *wh, u_int keyix) 621{ 622 struct ifnet *ifp = vap->iv_ifp; 623 624 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 625 "michael MIC verification failed <keyix %u>", keyix); 626 vap->iv_stats.is_rx_tkipmic++; 627 628 if (ifp != NULL) { /* NB: for cipher test modules */ 629 struct ieee80211_michael_event iev; 630 631 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 632 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 633 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 634 iev.iev_keyix = keyix; 635 CURVNET_SET(ifp->if_vnet); 636 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 637 CURVNET_RESTORE(); 638 } 639} 640 641void 642ieee80211_notify_wds_discover(struct ieee80211_node *ni) 643{ 644 struct ieee80211vap *vap = ni->ni_vap; 645 struct ifnet *ifp = vap->iv_ifp; 646 647 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr); 648} 649 650void 651ieee80211_notify_csa(struct ieee80211com *ic, 652 const struct ieee80211_channel *c, int mode, int count) 653{ 654 struct ifnet *ifp = ic->ic_ifp; 655 struct ieee80211_csa_event iev; 656 657 memset(&iev, 0, sizeof(iev)); 658 iev.iev_flags = c->ic_flags; 659 iev.iev_freq = c->ic_freq; 660 iev.iev_ieee = c->ic_ieee; 661 iev.iev_mode = mode; 662 iev.iev_count = count; 663 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev)); 664} 665 666void 667ieee80211_notify_radar(struct ieee80211com *ic, 668 const struct ieee80211_channel *c) 669{ 670 struct ifnet *ifp = ic->ic_ifp; 671 struct ieee80211_radar_event iev; 672 673 memset(&iev, 0, sizeof(iev)); 674 iev.iev_flags = c->ic_flags; 675 iev.iev_freq = c->ic_freq; 676 iev.iev_ieee = c->ic_ieee; 677 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev)); 678} 679 680void 681ieee80211_notify_cac(struct ieee80211com *ic, 682 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type) 683{ 684 struct ifnet *ifp = ic->ic_ifp; 685 struct ieee80211_cac_event iev; 686 687 memset(&iev, 0, sizeof(iev)); 688 iev.iev_flags = c->ic_flags; 689 iev.iev_freq = c->ic_freq; 690 iev.iev_ieee = c->ic_ieee; 691 iev.iev_type = type; 692 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev)); 693} 694 695void 696ieee80211_notify_node_deauth(struct ieee80211_node *ni) 697{ 698 struct ieee80211vap *vap = ni->ni_vap; 699 struct ifnet *ifp = vap->iv_ifp; 700 701 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth"); 702 703 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr); 704} 705 706void 707ieee80211_notify_node_auth(struct ieee80211_node *ni) 708{ 709 struct ieee80211vap *vap = ni->ni_vap; 710 struct ifnet *ifp = vap->iv_ifp; 711 712 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth"); 713 714 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr); 715} 716 717void 718ieee80211_notify_country(struct ieee80211vap *vap, 719 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2]) 720{ 721 struct ifnet *ifp = vap->iv_ifp; 722 struct ieee80211_country_event iev; 723 724 memset(&iev, 0, sizeof(iev)); 725 IEEE80211_ADDR_COPY(iev.iev_addr, bssid); 726 iev.iev_cc[0] = cc[0]; 727 iev.iev_cc[1] = cc[1]; 728 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev)); 729} 730 731void 732ieee80211_notify_radio(struct ieee80211com *ic, int state) 733{ 734 struct ifnet *ifp = ic->ic_ifp; 735 struct ieee80211_radio_event iev; 736 737 memset(&iev, 0, sizeof(iev)); 738 iev.iev_state = state; 739 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev)); 740} 741 742void 743ieee80211_load_module(const char *modname) 744{ 745 746#ifdef notyet 747 (void)kern_kldload(curthread, modname, NULL); 748#else 749 printf("%s: load the %s module by hand for now.\n", __func__, modname); 750#endif 751} 752 753static eventhandler_tag wlan_bpfevent; 754static eventhandler_tag wlan_ifllevent; 755 756static void 757bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach) 758{ 759 /* NB: identify vap's by if_start */ 760 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) { 761 struct ieee80211vap *vap = ifp->if_softc; 762 /* 763 * Track bpf radiotap listener state. We mark the vap 764 * to indicate if any listener is present and the com 765 * to indicate if any listener exists on any associated 766 * vap. This flag is used by drivers to prepare radiotap 767 * state only when needed. 768 */ 769 if (attach) { 770 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF); 771 if (vap->iv_opmode == IEEE80211_M_MONITOR) 772 atomic_add_int(&vap->iv_ic->ic_montaps, 1); 773 } else if (!bpf_peers_present(vap->iv_rawbpf)) { 774 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF); 775 if (vap->iv_opmode == IEEE80211_M_MONITOR) 776 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1); 777 } 778 } 779} 780 781static void 782wlan_iflladdr(void *arg __unused, struct ifnet *ifp) 783{ 784 struct ieee80211com *ic = ifp->if_l2com; 785 struct ieee80211vap *vap, *next; 786 787 if (ifp->if_type != IFT_IEEE80211 || ic == NULL) 788 return; 789 790 IEEE80211_LOCK(ic); 791 TAILQ_FOREACH_SAFE(vap, &ic->ic_vaps, iv_next, next) { 792 /* 793 * If the MAC address has changed on the parent and it was 794 * copied to the vap on creation then re-sync. 795 */ 796 if (vap->iv_ic == ic && 797 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) { 798 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); 799 IEEE80211_UNLOCK(ic); 800 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp), 801 IEEE80211_ADDR_LEN); 802 IEEE80211_LOCK(ic); 803 } 804 } 805 IEEE80211_UNLOCK(ic); 806} 807 808/* 809 * Module glue. 810 * 811 * NB: the module name is "wlan" for compatibility with NetBSD. 812 */ 813static int 814wlan_modevent(module_t mod, int type, void *unused) 815{ 816 switch (type) { 817 case MOD_LOAD: 818 if (bootverbose) 819 printf("wlan: <802.11 Link Layer>\n"); 820 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track, 821 bpf_track, 0, EVENTHANDLER_PRI_ANY); 822 if (wlan_bpfevent == NULL) 823 return ENOMEM; 824 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event, 825 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY); 826 if (wlan_ifllevent == NULL) { 827 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 828 return ENOMEM; 829 } 830#if __FreeBSD_version >= 1000020 831 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create, 832 wlan_clone_destroy, 0); 833#else 834 if_clone_attach(&wlan_cloner); 835#endif 836 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free); 837 return 0; 838 case MOD_UNLOAD: 839 if_deregister_com_alloc(IFT_IEEE80211); 840#if __FreeBSD_version >= 1000020 841 if_clone_detach(wlan_cloner); 842#else 843 if_clone_detach(&wlan_cloner); 844#endif 845 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 846 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent); 847 return 0; 848 } 849 return EINVAL; 850} 851 852static moduledata_t wlan_mod = { 853#if __FreeBSD_version >= 1000020 854 wlanname, 855#else 856 "wlan", 857#endif 858 wlan_modevent, 859 0 860}; 861DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 862MODULE_VERSION(wlan, 1); 863MODULE_DEPEND(wlan, ether, 1, 1, 1); 864#ifdef IEEE80211_ALQ 865MODULE_DEPEND(wlan, alq, 1, 1, 1); 866#endif /* IEEE80211_ALQ */ 867 868