ieee80211_freebsd.c revision 241610
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 241610 2012-10-16 13:37:54Z glebius $"); 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 if_clone_destroyif(wlan_cloner, vap->iv_ifp); 156} 157 158int 159ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) 160{ 161 int msecs = ticks_to_msecs(*(int *)arg1); 162 int error, t; 163 164 error = sysctl_handle_int(oidp, &msecs, 0, req); 165 if (error || !req->newptr) 166 return error; 167 t = msecs_to_ticks(msecs); 168 *(int *)arg1 = (t < 1) ? 1 : t; 169 return 0; 170} 171 172static int 173ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) 174{ 175 int inact = (*(int *)arg1) * IEEE80211_INACT_WAIT; 176 int error; 177 178 error = sysctl_handle_int(oidp, &inact, 0, req); 179 if (error || !req->newptr) 180 return error; 181 *(int *)arg1 = inact / IEEE80211_INACT_WAIT; 182 return 0; 183} 184 185static int 186ieee80211_sysctl_parent(SYSCTL_HANDLER_ARGS) 187{ 188 struct ieee80211com *ic = arg1; 189 const char *name = ic->ic_ifp->if_xname; 190 191 return SYSCTL_OUT(req, name, strlen(name)); 192} 193 194static int 195ieee80211_sysctl_radar(SYSCTL_HANDLER_ARGS) 196{ 197 struct ieee80211com *ic = arg1; 198 int t = 0, error; 199 200 error = sysctl_handle_int(oidp, &t, 0, req); 201 if (error || !req->newptr) 202 return error; 203 IEEE80211_LOCK(ic); 204 ieee80211_dfs_notify_radar(ic, ic->ic_curchan); 205 IEEE80211_UNLOCK(ic); 206 return 0; 207} 208 209void 210ieee80211_sysctl_attach(struct ieee80211com *ic) 211{ 212} 213 214void 215ieee80211_sysctl_detach(struct ieee80211com *ic) 216{ 217} 218 219void 220ieee80211_sysctl_vattach(struct ieee80211vap *vap) 221{ 222 struct ifnet *ifp = vap->iv_ifp; 223 struct sysctl_ctx_list *ctx; 224 struct sysctl_oid *oid; 225 char num[14]; /* sufficient for 32 bits */ 226 227 ctx = (struct sysctl_ctx_list *) malloc(sizeof(struct sysctl_ctx_list), 228 M_DEVBUF, M_NOWAIT | M_ZERO); 229 if (ctx == NULL) { 230 if_printf(ifp, "%s: cannot allocate sysctl context!\n", 231 __func__); 232 return; 233 } 234 sysctl_ctx_init(ctx); 235 snprintf(num, sizeof(num), "%u", ifp->if_dunit); 236 oid = SYSCTL_ADD_NODE(ctx, &SYSCTL_NODE_CHILDREN(_net, wlan), 237 OID_AUTO, num, CTLFLAG_RD, NULL, ""); 238 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 239 "%parent", CTLTYPE_STRING | CTLFLAG_RD, vap->iv_ic, 0, 240 ieee80211_sysctl_parent, "A", "parent device"); 241 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 242 "driver_caps", CTLFLAG_RW, &vap->iv_caps, 0, 243 "driver capabilities"); 244#ifdef IEEE80211_DEBUG 245 vap->iv_debug = ieee80211_debug; 246 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 247 "debug", CTLFLAG_RW, &vap->iv_debug, 0, 248 "control debugging printfs"); 249#endif 250 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 251 "bmiss_max", CTLFLAG_RW, &vap->iv_bmiss_max, 0, 252 "consecutive beacon misses before scanning"); 253 /* XXX inherit from tunables */ 254 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 255 "inact_run", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_run, 0, 256 ieee80211_sysctl_inact, "I", 257 "station inactivity timeout (sec)"); 258 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 259 "inact_probe", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_probe, 0, 260 ieee80211_sysctl_inact, "I", 261 "station inactivity probe timeout (sec)"); 262 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 263 "inact_auth", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_auth, 0, 264 ieee80211_sysctl_inact, "I", 265 "station authentication timeout (sec)"); 266 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 267 "inact_init", CTLTYPE_INT | CTLFLAG_RW, &vap->iv_inact_init, 0, 268 ieee80211_sysctl_inact, "I", 269 "station initial state timeout (sec)"); 270 if (vap->iv_htcaps & IEEE80211_HTC_HT) { 271 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 272 "ampdu_mintraffic_bk", CTLFLAG_RW, 273 &vap->iv_ampdu_mintraffic[WME_AC_BK], 0, 274 "BK traffic tx aggr threshold (pps)"); 275 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 276 "ampdu_mintraffic_be", CTLFLAG_RW, 277 &vap->iv_ampdu_mintraffic[WME_AC_BE], 0, 278 "BE traffic tx aggr threshold (pps)"); 279 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 280 "ampdu_mintraffic_vo", CTLFLAG_RW, 281 &vap->iv_ampdu_mintraffic[WME_AC_VO], 0, 282 "VO traffic tx aggr threshold (pps)"); 283 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 284 "ampdu_mintraffic_vi", CTLFLAG_RW, 285 &vap->iv_ampdu_mintraffic[WME_AC_VI], 0, 286 "VI traffic tx aggr threshold (pps)"); 287 } 288 if (vap->iv_caps & IEEE80211_C_DFS) { 289 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 290 "radar", CTLTYPE_INT | CTLFLAG_RW, vap->iv_ic, 0, 291 ieee80211_sysctl_radar, "I", "simulate radar event"); 292 } 293 vap->iv_sysctl = ctx; 294 vap->iv_oid = oid; 295} 296 297void 298ieee80211_sysctl_vdetach(struct ieee80211vap *vap) 299{ 300 301 if (vap->iv_sysctl != NULL) { 302 sysctl_ctx_free(vap->iv_sysctl); 303 free(vap->iv_sysctl, M_DEVBUF); 304 vap->iv_sysctl = NULL; 305 } 306} 307 308int 309ieee80211_node_dectestref(struct ieee80211_node *ni) 310{ 311 /* XXX need equivalent of atomic_dec_and_test */ 312 atomic_subtract_int(&ni->ni_refcnt, 1); 313 return atomic_cmpset_int(&ni->ni_refcnt, 0, 1); 314} 315 316void 317ieee80211_drain_ifq(struct ifqueue *ifq) 318{ 319 struct ieee80211_node *ni; 320 struct mbuf *m; 321 322 for (;;) { 323 IF_DEQUEUE(ifq, m); 324 if (m == NULL) 325 break; 326 327 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 328 KASSERT(ni != NULL, ("frame w/o node")); 329 ieee80211_free_node(ni); 330 m->m_pkthdr.rcvif = NULL; 331 332 m_freem(m); 333 } 334} 335 336void 337ieee80211_flush_ifq(struct ifqueue *ifq, struct ieee80211vap *vap) 338{ 339 struct ieee80211_node *ni; 340 struct mbuf *m, **mprev; 341 342 IF_LOCK(ifq); 343 mprev = &ifq->ifq_head; 344 while ((m = *mprev) != NULL) { 345 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 346 if (ni != NULL && ni->ni_vap == vap) { 347 *mprev = m->m_nextpkt; /* remove from list */ 348 ifq->ifq_len--; 349 350 m_freem(m); 351 ieee80211_free_node(ni); /* reclaim ref */ 352 } else 353 mprev = &m->m_nextpkt; 354 } 355 /* recalculate tail ptr */ 356 m = ifq->ifq_head; 357 for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt) 358 ; 359 ifq->ifq_tail = m; 360 IF_UNLOCK(ifq); 361} 362 363/* 364 * As above, for mbufs allocated with m_gethdr/MGETHDR 365 * or initialized by M_COPY_PKTHDR. 366 */ 367#define MC_ALIGN(m, len) \ 368do { \ 369 (m)->m_data += (MCLBYTES - (len)) &~ (sizeof(long) - 1); \ 370} while (/* CONSTCOND */ 0) 371 372/* 373 * Allocate and setup a management frame of the specified 374 * size. We return the mbuf and a pointer to the start 375 * of the contiguous data area that's been reserved based 376 * on the packet length. The data area is forced to 32-bit 377 * alignment and the buffer length to a multiple of 4 bytes. 378 * This is done mainly so beacon frames (that require this) 379 * can use this interface too. 380 */ 381struct mbuf * 382ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen) 383{ 384 struct mbuf *m; 385 u_int len; 386 387 /* 388 * NB: we know the mbuf routines will align the data area 389 * so we don't need to do anything special. 390 */ 391 len = roundup2(headroom + pktlen, 4); 392 KASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 393 if (len < MINCLSIZE) { 394 m = m_gethdr(M_NOWAIT, MT_DATA); 395 /* 396 * Align the data in case additional headers are added. 397 * This should only happen when a WEP header is added 398 * which only happens for shared key authentication mgt 399 * frames which all fit in MHLEN. 400 */ 401 if (m != NULL) 402 MH_ALIGN(m, len); 403 } else { 404 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 405 if (m != NULL) 406 MC_ALIGN(m, len); 407 } 408 if (m != NULL) { 409 m->m_data += headroom; 410 *frm = m->m_data; 411 } 412 return m; 413} 414 415/* 416 * Re-align the payload in the mbuf. This is mainly used (right now) 417 * to handle IP header alignment requirements on certain architectures. 418 */ 419struct mbuf * 420ieee80211_realign(struct ieee80211vap *vap, struct mbuf *m, size_t align) 421{ 422 int pktlen, space; 423 struct mbuf *n; 424 425 pktlen = m->m_pkthdr.len; 426 space = pktlen + align; 427 if (space < MINCLSIZE) 428 n = m_gethdr(M_DONTWAIT, MT_DATA); 429 else { 430 n = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, 431 space <= MCLBYTES ? MCLBYTES : 432#if MJUMPAGESIZE != MCLBYTES 433 space <= MJUMPAGESIZE ? MJUMPAGESIZE : 434#endif 435 space <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES); 436 } 437 if (__predict_true(n != NULL)) { 438 m_move_pkthdr(n, m); 439 n->m_data = (caddr_t)(ALIGN(n->m_data + align) - align); 440 m_copydata(m, 0, pktlen, mtod(n, caddr_t)); 441 n->m_len = pktlen; 442 } else { 443 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY, 444 mtod(m, const struct ieee80211_frame *), NULL, 445 "%s", "no mbuf to realign"); 446 vap->iv_stats.is_rx_badalign++; 447 } 448 m_freem(m); 449 return n; 450} 451 452int 453ieee80211_add_callback(struct mbuf *m, 454 void (*func)(struct ieee80211_node *, void *, int), void *arg) 455{ 456 struct m_tag *mtag; 457 struct ieee80211_cb *cb; 458 459 mtag = m_tag_alloc(MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, 460 sizeof(struct ieee80211_cb), M_NOWAIT); 461 if (mtag == NULL) 462 return 0; 463 464 cb = (struct ieee80211_cb *)(mtag+1); 465 cb->func = func; 466 cb->arg = arg; 467 m_tag_prepend(m, mtag); 468 m->m_flags |= M_TXCB; 469 return 1; 470} 471 472void 473ieee80211_process_callback(struct ieee80211_node *ni, 474 struct mbuf *m, int status) 475{ 476 struct m_tag *mtag; 477 478 mtag = m_tag_locate(m, MTAG_ABI_NET80211, NET80211_TAG_CALLBACK, NULL); 479 if (mtag != NULL) { 480 struct ieee80211_cb *cb = (struct ieee80211_cb *)(mtag+1); 481 cb->func(ni, cb->arg, status); 482 } 483} 484 485#include <sys/libkern.h> 486 487void 488get_random_bytes(void *p, size_t n) 489{ 490 uint8_t *dp = p; 491 492 while (n > 0) { 493 uint32_t v = arc4random(); 494 size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n; 495 bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n); 496 dp += sizeof(uint32_t), n -= nb; 497 } 498} 499 500/* 501 * Helper function for events that pass just a single mac address. 502 */ 503static void 504notify_macaddr(struct ifnet *ifp, int op, const uint8_t mac[IEEE80211_ADDR_LEN]) 505{ 506 struct ieee80211_join_event iev; 507 508 CURVNET_SET(ifp->if_vnet); 509 memset(&iev, 0, sizeof(iev)); 510 IEEE80211_ADDR_COPY(iev.iev_addr, mac); 511 rt_ieee80211msg(ifp, op, &iev, sizeof(iev)); 512 CURVNET_RESTORE(); 513} 514 515void 516ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) 517{ 518 struct ieee80211vap *vap = ni->ni_vap; 519 struct ifnet *ifp = vap->iv_ifp; 520 521 CURVNET_SET_QUIET(ifp->if_vnet); 522 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join", 523 (ni == vap->iv_bss) ? "bss " : ""); 524 525 if (ni == vap->iv_bss) { 526 notify_macaddr(ifp, newassoc ? 527 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, ni->ni_bssid); 528 if_link_state_change(ifp, LINK_STATE_UP); 529 } else { 530 notify_macaddr(ifp, newassoc ? 531 RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr); 532 } 533 CURVNET_RESTORE(); 534} 535 536void 537ieee80211_notify_node_leave(struct ieee80211_node *ni) 538{ 539 struct ieee80211vap *vap = ni->ni_vap; 540 struct ifnet *ifp = vap->iv_ifp; 541 542 CURVNET_SET_QUIET(ifp->if_vnet); 543 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave", 544 (ni == vap->iv_bss) ? "bss " : ""); 545 546 if (ni == vap->iv_bss) { 547 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 548 if_link_state_change(ifp, LINK_STATE_DOWN); 549 } else { 550 /* fire off wireless event station leaving */ 551 notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr); 552 } 553 CURVNET_RESTORE(); 554} 555 556void 557ieee80211_notify_scan_done(struct ieee80211vap *vap) 558{ 559 struct ifnet *ifp = vap->iv_ifp; 560 561 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); 562 563 /* dispatch wireless event indicating scan completed */ 564 CURVNET_SET(ifp->if_vnet); 565 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 566 CURVNET_RESTORE(); 567} 568 569void 570ieee80211_notify_replay_failure(struct ieee80211vap *vap, 571 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 572 u_int64_t rsc, int tid) 573{ 574 struct ifnet *ifp = vap->iv_ifp; 575 576 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 577 "%s replay detected tid %d <rsc %ju, csc %ju, keyix %u rxkeyix %u>", 578 k->wk_cipher->ic_name, tid, (intmax_t) rsc, 579 (intmax_t) k->wk_keyrsc[tid], 580 k->wk_keyix, k->wk_rxkeyix); 581 582 if (ifp != NULL) { /* NB: for cipher test modules */ 583 struct ieee80211_replay_event iev; 584 585 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 586 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 587 iev.iev_cipher = k->wk_cipher->ic_cipher; 588 if (k->wk_rxkeyix != IEEE80211_KEYIX_NONE) 589 iev.iev_keyix = k->wk_rxkeyix; 590 else 591 iev.iev_keyix = k->wk_keyix; 592 iev.iev_keyrsc = k->wk_keyrsc[tid]; 593 iev.iev_rsc = rsc; 594 CURVNET_SET(ifp->if_vnet); 595 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 596 CURVNET_RESTORE(); 597 } 598} 599 600void 601ieee80211_notify_michael_failure(struct ieee80211vap *vap, 602 const struct ieee80211_frame *wh, u_int keyix) 603{ 604 struct ifnet *ifp = vap->iv_ifp; 605 606 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, 607 "michael MIC verification failed <keyix %u>", keyix); 608 vap->iv_stats.is_rx_tkipmic++; 609 610 if (ifp != NULL) { /* NB: for cipher test modules */ 611 struct ieee80211_michael_event iev; 612 613 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 614 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 615 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 616 iev.iev_keyix = keyix; 617 CURVNET_SET(ifp->if_vnet); 618 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 619 CURVNET_RESTORE(); 620 } 621} 622 623void 624ieee80211_notify_wds_discover(struct ieee80211_node *ni) 625{ 626 struct ieee80211vap *vap = ni->ni_vap; 627 struct ifnet *ifp = vap->iv_ifp; 628 629 notify_macaddr(ifp, RTM_IEEE80211_WDS, ni->ni_macaddr); 630} 631 632void 633ieee80211_notify_csa(struct ieee80211com *ic, 634 const struct ieee80211_channel *c, int mode, int count) 635{ 636 struct ifnet *ifp = ic->ic_ifp; 637 struct ieee80211_csa_event iev; 638 639 memset(&iev, 0, sizeof(iev)); 640 iev.iev_flags = c->ic_flags; 641 iev.iev_freq = c->ic_freq; 642 iev.iev_ieee = c->ic_ieee; 643 iev.iev_mode = mode; 644 iev.iev_count = count; 645 rt_ieee80211msg(ifp, RTM_IEEE80211_CSA, &iev, sizeof(iev)); 646} 647 648void 649ieee80211_notify_radar(struct ieee80211com *ic, 650 const struct ieee80211_channel *c) 651{ 652 struct ifnet *ifp = ic->ic_ifp; 653 struct ieee80211_radar_event iev; 654 655 memset(&iev, 0, sizeof(iev)); 656 iev.iev_flags = c->ic_flags; 657 iev.iev_freq = c->ic_freq; 658 iev.iev_ieee = c->ic_ieee; 659 rt_ieee80211msg(ifp, RTM_IEEE80211_RADAR, &iev, sizeof(iev)); 660} 661 662void 663ieee80211_notify_cac(struct ieee80211com *ic, 664 const struct ieee80211_channel *c, enum ieee80211_notify_cac_event type) 665{ 666 struct ifnet *ifp = ic->ic_ifp; 667 struct ieee80211_cac_event iev; 668 669 memset(&iev, 0, sizeof(iev)); 670 iev.iev_flags = c->ic_flags; 671 iev.iev_freq = c->ic_freq; 672 iev.iev_ieee = c->ic_ieee; 673 iev.iev_type = type; 674 rt_ieee80211msg(ifp, RTM_IEEE80211_CAC, &iev, sizeof(iev)); 675} 676 677void 678ieee80211_notify_node_deauth(struct ieee80211_node *ni) 679{ 680 struct ieee80211vap *vap = ni->ni_vap; 681 struct ifnet *ifp = vap->iv_ifp; 682 683 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node deauth"); 684 685 notify_macaddr(ifp, RTM_IEEE80211_DEAUTH, ni->ni_macaddr); 686} 687 688void 689ieee80211_notify_node_auth(struct ieee80211_node *ni) 690{ 691 struct ieee80211vap *vap = ni->ni_vap; 692 struct ifnet *ifp = vap->iv_ifp; 693 694 IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%s", "node auth"); 695 696 notify_macaddr(ifp, RTM_IEEE80211_AUTH, ni->ni_macaddr); 697} 698 699void 700ieee80211_notify_country(struct ieee80211vap *vap, 701 const uint8_t bssid[IEEE80211_ADDR_LEN], const uint8_t cc[2]) 702{ 703 struct ifnet *ifp = vap->iv_ifp; 704 struct ieee80211_country_event iev; 705 706 memset(&iev, 0, sizeof(iev)); 707 IEEE80211_ADDR_COPY(iev.iev_addr, bssid); 708 iev.iev_cc[0] = cc[0]; 709 iev.iev_cc[1] = cc[1]; 710 rt_ieee80211msg(ifp, RTM_IEEE80211_COUNTRY, &iev, sizeof(iev)); 711} 712 713void 714ieee80211_notify_radio(struct ieee80211com *ic, int state) 715{ 716 struct ifnet *ifp = ic->ic_ifp; 717 struct ieee80211_radio_event iev; 718 719 memset(&iev, 0, sizeof(iev)); 720 iev.iev_state = state; 721 rt_ieee80211msg(ifp, RTM_IEEE80211_RADIO, &iev, sizeof(iev)); 722} 723 724void 725ieee80211_load_module(const char *modname) 726{ 727 728#ifdef notyet 729 (void)kern_kldload(curthread, modname, NULL); 730#else 731 printf("%s: load the %s module by hand for now.\n", __func__, modname); 732#endif 733} 734 735static eventhandler_tag wlan_bpfevent; 736static eventhandler_tag wlan_ifllevent; 737 738static void 739bpf_track(void *arg, struct ifnet *ifp, int dlt, int attach) 740{ 741 /* NB: identify vap's by if_start */ 742 if (dlt == DLT_IEEE802_11_RADIO && ifp->if_start == ieee80211_start) { 743 struct ieee80211vap *vap = ifp->if_softc; 744 /* 745 * Track bpf radiotap listener state. We mark the vap 746 * to indicate if any listener is present and the com 747 * to indicate if any listener exists on any associated 748 * vap. This flag is used by drivers to prepare radiotap 749 * state only when needed. 750 */ 751 if (attach) { 752 ieee80211_syncflag_ext(vap, IEEE80211_FEXT_BPF); 753 if (vap->iv_opmode == IEEE80211_M_MONITOR) 754 atomic_add_int(&vap->iv_ic->ic_montaps, 1); 755 } else if (!bpf_peers_present(vap->iv_rawbpf)) { 756 ieee80211_syncflag_ext(vap, -IEEE80211_FEXT_BPF); 757 if (vap->iv_opmode == IEEE80211_M_MONITOR) 758 atomic_subtract_int(&vap->iv_ic->ic_montaps, 1); 759 } 760 } 761} 762 763static void 764wlan_iflladdr(void *arg __unused, struct ifnet *ifp) 765{ 766 struct ieee80211com *ic = ifp->if_l2com; 767 struct ieee80211vap *vap, *next; 768 769 if (ifp->if_type != IFT_IEEE80211 || ic == NULL) 770 return; 771 772 IEEE80211_LOCK(ic); 773 TAILQ_FOREACH_SAFE(vap, &ic->ic_vaps, iv_next, next) { 774 /* 775 * If the MAC address has changed on the parent and it was 776 * copied to the vap on creation then re-sync. 777 */ 778 if (vap->iv_ic == ic && 779 (vap->iv_flags_ext & IEEE80211_FEXT_UNIQMAC) == 0) { 780 IEEE80211_ADDR_COPY(vap->iv_myaddr, IF_LLADDR(ifp)); 781 IEEE80211_UNLOCK(ic); 782 if_setlladdr(vap->iv_ifp, IF_LLADDR(ifp), 783 IEEE80211_ADDR_LEN); 784 IEEE80211_LOCK(ic); 785 } 786 } 787 IEEE80211_UNLOCK(ic); 788} 789 790/* 791 * Module glue. 792 * 793 * NB: the module name is "wlan" for compatibility with NetBSD. 794 */ 795static int 796wlan_modevent(module_t mod, int type, void *unused) 797{ 798 switch (type) { 799 case MOD_LOAD: 800 if (bootverbose) 801 printf("wlan: <802.11 Link Layer>\n"); 802 wlan_bpfevent = EVENTHANDLER_REGISTER(bpf_track, 803 bpf_track, 0, EVENTHANDLER_PRI_ANY); 804 if (wlan_bpfevent == NULL) 805 return ENOMEM; 806 wlan_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event, 807 wlan_iflladdr, NULL, EVENTHANDLER_PRI_ANY); 808 if (wlan_ifllevent == NULL) { 809 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 810 return ENOMEM; 811 } 812 wlan_cloner = if_clone_simple(wlanname, wlan_clone_create, 813 wlan_clone_destroy, 0); 814 if_register_com_alloc(IFT_IEEE80211, wlan_alloc, wlan_free); 815 return 0; 816 case MOD_UNLOAD: 817 if_deregister_com_alloc(IFT_IEEE80211); 818 if_clone_detach(wlan_cloner); 819 EVENTHANDLER_DEREGISTER(bpf_track, wlan_bpfevent); 820 EVENTHANDLER_DEREGISTER(iflladdr_event, wlan_ifllevent); 821 return 0; 822 } 823 return EINVAL; 824} 825 826static moduledata_t wlan_mod = { 827 wlanname, 828 wlan_modevent, 829 0 830}; 831DECLARE_MODULE(wlan, wlan_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 832MODULE_VERSION(wlan, 1); 833MODULE_DEPEND(wlan, ether, 1, 1, 1); 834#ifdef IEEE80211_ALQ 835MODULE_DEPEND(wlan, alq, 1, 1, 1); 836#endif /* IEEE80211_ALQ */ 837 838