ieee80211_freebsd.c revision 242149
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 242149 2012-10-26 16:56:55Z 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 68static const char wlanname[] = "wlan"; 69 70static struct if_clone *wlan_cloner; 71 72/* 73 * Allocate/free com structure in conjunction with ifnet; 74 * these routines are registered with if_register_com_alloc 75 * below and are called automatically by the ifnet code 76 * when the ifnet of the parent device is created. 77 */ 78static void * 79wlan_alloc(u_char type, struct ifnet *ifp) 80{ 81 struct ieee80211com *ic; 82 83 ic = malloc(sizeof(struct ieee80211com), M_80211_COM, M_WAITOK|M_ZERO); 84 ic->ic_ifp = ifp; 85 86 return (ic); 87} 88 89static void 90wlan_free(void *ic, u_char type) 91{ 92 free(ic, M_80211_COM); 93} 94 95static int 96wlan_clone_create(struct if_clone *ifc, int unit, caddr_t params) 97{ 98 struct ieee80211_clone_params cp; 99 struct ieee80211vap *vap; 100 struct ieee80211com *ic; 101 struct ifnet *ifp; 102 int error; 103 104 error = copyin(params, &cp, sizeof(cp)); 105 if (error) 106 return error; 107 ifp = ifunit(cp.icp_parent); 108 if (ifp == NULL) 109 return ENXIO; 110 /* XXX move printfs to DIAGNOSTIC before release */ 111 if (ifp->if_type != IFT_IEEE80211) { 112 if_printf(ifp, "%s: reject, not an 802.11 device\n", __func__); 113 return ENXIO; 114 } 115 if (cp.icp_opmode >= IEEE80211_OPMODE_MAX) { 116 if_printf(ifp, "%s: invalid opmode %d\n", 117 __func__, cp.icp_opmode); 118 return EINVAL; 119 } 120 ic = ifp->if_l2com; 121 if ((ic->ic_caps & ieee80211_opcap[cp.icp_opmode]) == 0) { 122 if_printf(ifp, "%s mode not supported\n", 123 ieee80211_opmode_name[cp.icp_opmode]); 124 return EOPNOTSUPP; 125 } 126 if ((cp.icp_flags & IEEE80211_CLONE_TDMA) && 127#ifdef IEEE80211_SUPPORT_TDMA 128 (ic->ic_caps & IEEE80211_C_TDMA) == 0 129#else 130 (1) 131#endif 132 ) { 133 if_printf(ifp, "TDMA not supported\n"); 134 return EOPNOTSUPP; 135 } 136 vap = ic->ic_vap_create(ic, wlanname, unit, 137 cp.icp_opmode, cp.icp_flags, cp.icp_bssid, 138 cp.icp_flags & IEEE80211_CLONE_MACADDR ? 139 cp.icp_macaddr : (const uint8_t *)IF_LLADDR(ifp)); 140 return (vap == NULL ? EIO : 0); 141} 142 143static void 144wlan_clone_destroy(struct ifnet *ifp) 145{ 146 struct ieee80211vap *vap = ifp->if_softc; 147 struct ieee80211com *ic = vap->iv_ic; 148 149 ic->ic_vap_delete(vap); 150} 151 152void 153ieee80211_vap_destroy(struct ieee80211vap *vap) 154{ 155 CURVNET_SET(vap->iv_ifp->if_vnet); 156 if_clone_destroyif(wlan_cloner, vap->iv_ifp); 157 CURVNET_RESTORE(); 158} 159 160int 161ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) 162{ 163 int msecs = ticks_to_msecs(*(int *)arg1); 164 int error, t; 165 166 error = sysctl_handle_int(oidp, &msecs, 0, req); 167 if (error || !req->newptr) 168 return error; 169 t = msecs_to_ticks(msecs); 170 *(int *)arg1 = (t < 1) ? 1 : t; 171 return 0; 172} 173 174static int 175ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) 176{ 177 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT; 178 int error; 179 180 error = sysctl_handle_int(oidp, &inact, 0, req); 181 if (error || !req->newptr) 182 return error; 183 *(int *)arg1 = inact / IEEE80211_INACT_WAIT; 184 return 0; 185} 186 187static int 188ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS) 189{ 190 struct ieee80211com *ic = arg1; 191 const char *name = ic->ic_ifp->if_xname; 192 193 return SYSCTL_OUT(req, name, strlen(name)); 194} 195 196static int 197ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS) 198{ 199 struct ieee80211com *ic = arg1; 200 int t = 0, error; 201 202 error = sysctl_handle_int(oidp, &t, 0, req); 203 if (error || !req->newptr) 204 return error; 205 IEEE80211_LOCK(ic); 206 ieee80211_dfs_notify_radar(ic, ic->ic_curchan); 207 IEEE80211_UNLOCK(ic); 208 return 0; 209} 210 211void 212ieee80211_sysctl_attach(struct ieee80211com *ic) 213{ 214} 215 216void 217ieee80211_sysctl_detach(struct ieee80211com *ic) 218{ 219} 220 221void 222ieee80211_sysctl_vattach(struct ieee80211vap *vap) 223{ 224 struct ifnet *ifp = vap->iv_ifp; 225 struct sysctl_ctx_list *ctx; 226 struct sysctl_oid *oid; 227 char num[14]; /* sufficient for 32 bits */ 228 229 ctx = (struct sysctl_ctx_list *) malloc(sizeof(struct sysctl_ctx_list), 230 M_DEVBUF, M_NOWAIT | M_ZERO); 231 if (ctx == NULL) { 232 if_printf(ifp, "%s: cannot allocate sysctl context!\n", 233 __func__); 234 return; 235 } 236 sysctl_ctx_init(ctx); 237 snprintf(num, sizeof(num), "%u", ifp->if_dunit); 238 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan), 239 OID_AUTO, num, CTLFLAG_RD, NULL, ""); 240 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 241 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0, 242 ieee80211_sysctl_parent, "A", "parent device"); 243 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 244 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0, 245 "driver capabilities"); 246#ifdef IEEE80211_DEBUG 247 vap->iv_debug = ieee80211_debug; 248 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 249 "debug", CTLFLAG_RW, &vap->iv_debug, 0, 250 "control debugging printfs"); 251#endif 252 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 253 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0, 254 "consecutive beacon misses before scanning"); 255 /* XXX inherit from tunables */ 256 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 257 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0, 258 ieee80211_sysctl_inact, "I", 259 "station inactivity timeout (sec)"); 260 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 261 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0, 262 ieee80211_sysctl_inact, "I", 263 "station inactivity probe timeout (sec)"); 264 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 265 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0, 266 ieee80211_sysctl_inact, "I", 267 "station authentication timeout (sec)"); 268 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 269 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0, 270 ieee80211_sysctl_inact, "I", 271 "station initial state timeout (sec)"); 272 if (vap->iv_htcaps & IEEE80211_HTC_HT) { 273 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 274 "ampdu_mintraffic_bk", CTLFLAG_RW, 275 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0, 276 "BK traffic tx aggr threshold (pps)"); 277 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 278 "ampdu_mintraffic_be", CTLFLAG_RW, 279 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0, 280 "BE traffic tx aggr threshold (pps)"); 281 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 282 "ampdu_mintraffic_vo", CTLFLAG_RW, 283 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0, 284 "VO traffic tx aggr threshold (pps)"); 285 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 286 "ampdu_mintraffic_vi", CTLFLAG_RW, 287 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0, 288 "VI traffic tx aggr threshold (pps)"); 289 } 290 if (vap->iv_caps & IEEE80211_C_DFS) { 291 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 292 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0, 293 ieee80211_sysctl_radar, "I", "simulate radar event"); 294 } 295 vap->iv_sysctl = ctx; 296 vap->iv_oid = oid; 297} 298 299void 300ieee80211_sysctl_vdetach(struct ieee80211vap *vap) 301{ 302 303 if (vap->iv_sysctl != NULL) { 304 sysctl_ctx_free(vap->iv_sysctl); 305 free(vap->iv_sysctl, M_DEVBUF); 306 vap->iv_sysctl = NULL; 307 } 308} 309 310int 311ieee80211_node_dectestref(struct ieee80211_node *ni) 312{ 313 /* XXX need equivalent of atomic_dec_and_test */ 314 atomic_subtract_int(&ni->ni_refcnt, 1); 315 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1); 316} 317 318void 319ieee80211_drain_ifq(struct ifqueue *ifq) 320{ 321 struct ieee80211_node *ni; 322 struct mbuf *m; 323 324 for (;;) { 325 IF_DEQUEUE(ifq, m); 326 if (m == NULL) 327 break; 328 329 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 330 KASSERT(ni != NULL, ("frame w/o node")); 331 ieee80211_free_node(ni); 332 m->m_pkthdr.rcvif = NULL; 333 334 m_freem(m); 335 } 336} 337 338void 339ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap) 340{ 341 struct ieee80211_node *ni; 342 struct mbuf *m, **mprev; 343 344 IF_LOCK(ifq); 345 mprev = &ifq->ifq_head; 346 while ((m = *mprev) != NULL) { 347 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 348 if (ni != NULL && ni->ni_vap == vap) { 349 *mprev = m->m_nextpkt; /* remove from list */ 350 ifq->ifq_len--; 351 352 m_freem(m); 353 ieee80211_free_node(ni); /* reclaim ref */ 354 } else 355 mprev = &m->m_nextpkt; 356 } 357 /* recalculate tail ptr */ 358 m = ifq->ifq_head; 359 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt) 360 ; 361 ifq->ifq_tail = m; 362 IF_UNLOCK(ifq); 363} 364 365/* 366 * As above, for mbufs allocated with m_gethdr/MGETHDR 367 * or initialized by M_COPY_PKTHDR. 368 */ 369#define MC_ALIGN(m, len) \ 370do { \ 371 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \ 372} while (/* CONSTCOND */ 0) 373 374/* 375 * Allocate and setup a management frame of the specified 376 * size. We return the mbuf and a pointer to the start 377 * of the contiguous data area that's been reserved based 378 * on the packet length. The data area is forced to 32-bit 379 * alignment and the buffer length to a multiple of 4 bytes. 380 * This is done mainly so beacon frames (that require this) 381 * can use this interface too. 382 */ 383struct mbuf * 384ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen) 385{ 386 struct mbuf *m; 387 u_int len; 388 389 /* 390 * NB: we know the mbuf routines will align the data area 391 * so we don't need to do anything special. 392 */ 393 len = roundup2(headroom + pktlen, 4); 394 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 395 if (len < MINCLSIZE) { 396 m = m_gethdr(M_NOWAIT, MT_DATA); 397 /* 398 * Align the data in case additional headers are added. 399 * This should only happen when a WEP header is added 400 * which only happens for shared key authentication mgt 401 * frames which all fit in MHLEN. 402 */ 403 if (m != NULL) 404 MH_ALIGN(m, len); 405 } else { 406 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 407 if (m != NULL) 408 MC_ALIGN(m, len); 409 } 410 if (m != NULL) { 411 m->m_data += headroom; 412 *frm = m->m_data; 413 } 414 return m; 415} 416 417/* 418 * Re-align the payload in the mbuf. This is mainly used (right now) 419 * to handle IP header alignment requirements on certain architectures. 420 */ 421struct mbuf * 422ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align) 423{ 424 int pktlen, space; 425 struct mbuf *n; 426 427 pktlen = m->m_pkthdr.len; 428 space = pktlen + align; 429 if (space < MINCLSIZE) 430 n = m_gethdr(M_DONTWAIT, MT_DATA); 431 else { 432 n = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, 433 space <= MCLBYTES ? MCLBYTES : 434#if MJUMPAGESIZE != MCLBYTES 435 space <= MJUMPAGESIZE ? MJUMPAGESIZE : 436#endif 437 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES); 438 } 439 if (__predict_true(n != NULL)) { 440 m_move_pkthdr(n, m); 441 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align); 442 m_copydata(m, 0, pktlen, mtod(n, caddr_t)); 443 n->m_len = pktlen; 444 } else { 445 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 446 mtod(m, const struct ieee80211_frame *), NULL, 447 "%s", "no mbuf to realign"); 448 vap->iv_stats.is_rx_badalign++; 449 } 450 m_freem(m); 451 return n; 452} 453 454int 455ieee80211_add_callback(struct mbuf *m, 456 void (*func)(struct ieee80211_node *, void *, int), void *arg) 457{ 458 struct m_tag *mtag; 459 struct ieee80211_cb *cb; 460 461 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, 462 sizeof(struct ieee80211_cb), M_NOWAIT); 463 if (mtag == NULL) 464 return 0; 465 466 cb = (struct ieee80211_cb *)(mtag+1); 467 cb->func = func; 468 cb->arg = arg; 469 m_tag_prepend(m, mtag); 470 m->m_flags |= M_TXCB; 471 return 1; 472} 473 474void 475ieee80211_process_callback(struct ieee80211_node *ni, 476 struct mbuf *m, int status) 477{ 478 struct m_tag *mtag; 479 480 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL); 481 if (mtag != NULL) { 482 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1); 483 cb->func(ni, cb->arg, status); 484 } 485} 486 487#include <sys/libkern.h> 488 489void 490get_random_bytes(void *p, size_t n) 491{ 492 uint8_t *dp = p; 493 494 while (n > 0) { 495 uint32_t v = arc4random(); 496 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n; 497 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n); 498 dp += sizeof(uint32_t), n -= nb; 499 } 500} 501 502/* 503 * Helper function for events that pass just a single mac address. 504 */ 505static void 506notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN]) 507{ 508 struct ieee80211_join_event iev; 509 510 CURVNET_SET(ifp->if_vnet); 511 memset(&iev, 0, sizeof(iev)); 512 IEEE80211_ADDR_COPY(iev.iev_addr, mac); 513 rt_ieee80211msg(ifp, op, &iev, sizeof(iev)); 514 CURVNET_RESTORE(); 515} 516 517void 518ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) 519{ 520 struct ieee80211vap *vap = ni->ni_vap; 521 struct ifnet *ifp = vap->iv_ifp; 522 523 CURVNET_SET_QUIET(ifp->if_vnet); 524 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join", 525 (ni == vap->iv_bss) ? "bss " : ""); 526 527 if (ni == vap->iv_bss) { 528 notify_macaddr(ifp, newassoc ? 529 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid); 530 if_link_state_change(ifp, LINK_STATE_UP); 531 } else { 532 notify_macaddr(ifp, newassoc ? 533 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr); 534 } 535 CURVNET_RESTORE(); 536} 537 538void 539ieee80211_notify_node_leave(struct ieee80211_node *ni) 540{ 541 struct ieee80211vap *vap = ni->ni_vap; 542 struct ifnet *ifp = vap->iv_ifp; 543 544 CURVNET_SET_QUIET(ifp->if_vnet); 545 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave", 546 (ni == vap->iv_bss) ? "bss " : ""); 547 548 if (ni == vap->iv_bss) { 549 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 550 if_link_state_change(ifp, LINK_STATE_DOWN); 551 } else { 552 /* fire off wireless event station leaving */ 553 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr); 554 } 555 CURVNET_RESTORE(); 556} 557 558void 559ieee80211_notify_scan_done(struct ieee80211vap *vap) 560{ 561 struct ifnet *ifp = vap->iv_ifp; 562 563 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); 564 565 /* dispatch wireless event indicating scan completed */ 566 CURVNET_SET(ifp->if_vnet); 567 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 568 CURVNET_RESTORE(); 569} 570 571void 572ieee80211_notify_replay_failure(struct ieee80211vap *vap, 573 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 574 u_int64_t rsc, int tid) 575{ 576 struct ifnet *ifp = vap->iv_ifp; 577 578 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 579 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>", 580 k->wk_cipher->ic_name, tid, (intmax_t) rsc, 581 (intmax_t) k->wk_keyrsc[tid], 582 k->wk_keyix, k->wk_rxkeyix); 583 584 if (ifp != NULL) { /* NB: for cipher test modules */ 585 struct ieee80211_replay_event iev; 586 587 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 588 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 589 iev.iev_cipher = k->wk_cipher->ic_cipher; 590 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 591 iev.iev_keyix = k->wk_rxkeyix; 592 else 593 iev.iev_keyix = k->wk_keyix; 594 iev.iev_keyrsc = k->wk_keyrsc[tid]; 595 iev.iev_rsc = rsc; 596 CURVNET_SET(ifp->if_vnet); 597 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 598 CURVNET_RESTORE(); 599 } 600} 601 602void 603ieee80211_notify_michael_failure(struct ieee80211vap *vap, 604 const struct ieee80211_frame *wh, u_int keyix) 605{ 606 struct ifnet *ifp = vap->iv_ifp; 607 608 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 609 "michael MIC verification failed <keyix %u>", keyix); 610 vap->iv_stats.is_rx_tkipmic++; 611 612 if (ifp != NULL) { /* NB: for cipher test modules */ 613 struct ieee80211_michael_event iev; 614 615 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 616 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 617 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 618 iev.iev_keyix = keyix; 619 CURVNET_SET(ifp->if_vnet); 620 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 621 CURVNET_RESTORE(); 622 } 623} 624 625void 626ieee80211_notify_wds_discover(struct ieee80211_node *ni) 627{ 628 struct ieee80211vap *vap = ni->ni_vap; 629 struct ifnet *ifp = vap->iv_ifp; 630 631 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr); 632} 633 634void 635ieee80211_notify_csa(struct ieee80211com *ic, 636 const struct ieee80211_channel *c, int mode, int count) 637{ 638 struct ifnet *ifp = ic->ic_ifp; 639 struct ieee80211_csa_event iev; 640 641 memset(&iev, 0, sizeof(iev)); 642 iev.iev_flags = c->ic_flags; 643 iev.iev_freq = c->ic_freq; 644 iev.iev_ieee = c->ic_ieee; 645 iev.iev_mode = mode; 646 iev.iev_count = count; 647 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev)); 648} 649 650void 651ieee80211_notify_radar(struct ieee80211com *ic, 652 const struct ieee80211_channel *c) 653{ 654 struct ifnet *ifp = ic->ic_ifp; 655 struct ieee80211_radar_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 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev)); 662} 663 664void 665ieee80211_notify_cac(struct ieee80211com *ic, 666 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type) 667{ 668 struct ifnet *ifp = ic->ic_ifp; 669 struct ieee80211_cac_event iev; 670 671 memset(&iev, 0, sizeof(iev)); 672 iev.iev_flags = c->ic_flags; 673 iev.iev_freq = c->ic_freq; 674 iev.iev_ieee = c->ic_ieee; 675 iev.iev_type = type; 676 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev)); 677} 678 679void 680ieee80211_notify_node_deauth(struct ieee80211_node *ni) 681{ 682 struct ieee80211vap *vap = ni->ni_vap; 683 struct ifnet *ifp = vap->iv_ifp; 684 685 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth"); 686 687 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr); 688} 689 690void 691ieee80211_notify_node_auth(struct ieee80211_node *ni) 692{ 693 struct ieee80211vap *vap = ni->ni_vap; 694 struct ifnet *ifp = vap->iv_ifp; 695 696 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth"); 697 698 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr); 699} 700 701void 702ieee80211_notify_country(struct ieee80211vap *vap, 703 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2]) 704{ 705 struct ifnet *ifp = vap->iv_ifp; 706 struct ieee80211_country_event iev; 707 708 memset(&iev, 0, sizeof(iev)); 709 IEEE80211_ADDR_COPY(iev.iev_addr, bssid); 710 iev.iev_cc[0] = cc[0]; 711 iev.iev_cc[1] = cc[1]; 712 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev)); 713} 714 715void 716ieee80211_notify_radio(struct ieee80211com *ic, int state) 717{ 718 struct ifnet *ifp = ic->ic_ifp; 719 struct ieee80211_radio_event iev; 720 721 memset(&iev, 0, sizeof(iev)); 722 iev.iev_state = state; 723 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev)); 724} 725 726void 727ieee80211_load_module(const char *modname) 728{ 729 730#ifdef notyet 731 (void)kern_kldload(curthread, modname, NULL); 732#else 733 printf("%s: load the %s module by hand for now.\n", __func__, modname); 734#endif 735} 736 737static eventhandler_tag wlan_bpfevent; 738static eventhandler_tag wlan_ifllevent; 739 740static void 741bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach) 742{ 743 /* NB: identify vap's by if_start */ 744 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) { 745 struct ieee80211vap *vap = ifp->if_softc; 746 /* 747 * Track bpf radiotap listener state. We mark the vap 748 * to indicate if any listener is present and the com 749 * to indicate if any listener exists on any associated 750 * vap. This flag is used by drivers to prepare radiotap 751 * state only when needed. 752 */ 753 if (attach) { 754 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF); 755 if (vap->iv_opmode == IEEE80211_M_MONITOR) 756 atomic_add_int(&vap->iv_ic->ic_montaps, 1); 757 } else if (!bpf_peers_present(vap->iv_rawbpf)) { 758 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF); 759 if (vap->iv_opmode == IEEE80211_M_MONITOR) 760 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1); 761 } 762 } 763} 764 765static void 766wlan_iflladdr(void *arg __unused, struct ifnet *ifp) 767{ 768 struct ieee80211com *ic = ifp->if_l2com; 769 struct ieee80211vap *vap, *next; 770 771 if (ifp->if_type != IFT_IEEE80211 || ic == NULL) 772 return; 773 774 IEEE80211_LOCK(ic); 775 TAILQ_FOREACH_SAFE(vap, &ic->ic_vaps, iv_next, next) { 776 /* 777 * If the MAC address has changed on the parent and it was 778 * copied to the vap on creation then re-sync. 779 */ 780 if (vap->iv_ic == ic && 781 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) { 782 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); 783 IEEE80211_UNLOCK(ic); 784 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp), 785 IEEE80211_ADDR_LEN); 786 IEEE80211_LOCK(ic); 787 } 788 } 789 IEEE80211_UNLOCK(ic); 790} 791 792/* 793 * Module glue. 794 * 795 * NB: the module name is "wlan" for compatibility with NetBSD. 796 */ 797static int 798wlan_modevent(module_t mod, int type, void *unused) 799{ 800 switch (type) { 801 case MOD_LOAD: 802 if (bootverbose) 803 printf("wlan: <802.11 Link Layer>\n"); 804 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track, 805 bpf_track, 0, EVENTHANDLER_PRI_ANY); 806 if (wlan_bpfevent == NULL) 807 return ENOMEM; 808 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event, 809 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY); 810 if (wlan_ifllevent == NULL) { 811 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 812 return ENOMEM; 813 } 814 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create, 815 wlan_clone_destroy, 0); 816 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free); 817 return 0; 818 case MOD_UNLOAD: 819 if_deregister_com_alloc(IFT_IEEE80211); 820 if_clone_detach(wlan_cloner); 821 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 822 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent); 823 return 0; 824 } 825 return EINVAL; 826} 827 828static moduledata_t wlan_mod = { 829 wlanname, 830 wlan_modevent, 831 0 832}; 833DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 834MODULE_VERSION(wlan, 1); 835MODULE_DEPEND(wlan, ether, 1, 1, 1); 836#ifdef IEEE80211_ALQ 837MODULE_DEPEND(wlan, alq, 1, 1, 1); 838#endif /* IEEE80211_ALQ */ 839 840