1 /*- 2 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB 3 * All rights reserved. 4 * 5 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer, 13 * without modification. 14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 15 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 16 * redistribution must be conditioned upon including a substantially 17 * similar Disclaimer requirement for further binary redistribution. 18 * 19 * NO WARRANTY 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 24 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 28 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGES. 31 * 32 * $FreeBSD$ 33 */ 34 #include "if_wtapvar.h" 35 #include <sys/uio.h> /* uio struct */ 36 #include <sys/jail.h> 37 #include <net/if_var.h> 38 #include <net/vnet.h> 39 40 #include <net80211/ieee80211_ratectl.h> 41 #include "if_medium.h" 42 43 /* 44 * This _requires_ vimage to be useful. 45 */ 46 #ifndef VIMAGE 47 #error if_wtap requires VIMAGE. 48 #endif /* VIMAGE */ 49 50 /* device for IOCTL and read/write for debuggin purposes */ 51 /* Function prototypes */ 52 static d_open_t wtap_node_open; 53 static d_close_t wtap_node_close; 54 static d_write_t wtap_node_write; 55 static d_ioctl_t wtap_node_ioctl; 56 57 static struct cdevsw wtap_cdevsw = { 58 .d_version = D_VERSION, 59 .d_flags = 0, 60 .d_open = wtap_node_open, 61 .d_close = wtap_node_close, 62 .d_write = wtap_node_write, 63 .d_ioctl = wtap_node_ioctl, 64 .d_name = "wtapnode", 65 }; 66 67 static int 68 wtap_node_open(struct cdev *dev, int oflags, int devtype, struct thread *p) 69 { 70 71 int err = 0; 72 uprintf("Opened device \"echo\" successfully.\n"); 73 return(err); 74 } 75 76 static int 77 wtap_node_close(struct cdev *dev, int fflag, int devtype, struct thread *p) 78 { 79 80 uprintf("Closing device \"echo.\"\n"); 81 return(0); 82 } 83 84 static int 85 wtap_node_write(struct cdev *dev, struct uio *uio, int ioflag) 86 { 87 int err = 0; 88 struct mbuf *m; 89 struct ifnet *ifp; 90 struct wtap_softc *sc; 91 uint8_t buf[1024]; 92 int buf_len; 93 94 uprintf("write device %s \"echo.\"\n", devtoname(dev)); 95 buf_len = MIN(uio->uio_iov->iov_len, 1024); 96 err = copyin(uio->uio_iov->iov_base, buf, buf_len); 97 98 if (err != 0) { 99 uprintf("Write failed: bad address!\n"); 100 return (err); 101 } 102 103 MGETHDR(m, M_DONTWAIT, MT_DATA); 104 m_copyback(m, 0, buf_len, buf); 105 106 CURVNET_SET(TD_TO_VNET(curthread)); 107 IFNET_RLOCK_NOSLEEP(); 108 109 TAILQ_FOREACH(ifp, &V_ifnet, if_link) { 110 printf("ifp->if_xname = %s\n", ifp->if_xname); 111 if(strcmp(devtoname(dev), ifp->if_xname) == 0){ 112 printf("found match, correspoding wtap = %s\n", 113 ifp->if_xname); 114 sc = (struct wtap_softc *)ifp->if_softc; 115 printf("wtap id = %d\n", sc->id); 116 wtap_inject(sc, m); 117 } 118 } 119 120 IFNET_RUNLOCK_NOSLEEP(); 121 CURVNET_RESTORE(); 122 123 return(err); 124 } 125 126 int 127 wtap_node_ioctl(struct cdev *dev, u_long cmd, caddr_t data, 128 int fflag, struct thread *td) 129 { 130 int error = 0; 131 132 switch(cmd) { 133 default: 134 DWTAP_PRINTF("Unkown WTAP IOCTL\n"); 135 error = EINVAL; 136 } 137 return error; 138 } 139 140 static int wtap_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 141 const struct ieee80211_bpf_params *params); 142 143 static int 144 wtap_medium_enqueue(struct wtap_vap *avp, struct mbuf *m) 145 { 146 147 return medium_transmit(avp->av_md, avp->id, m); 148 } 149 150 static int 151 wtap_media_change(struct ifnet *ifp) 152 { 153 154 DWTAP_PRINTF("%s\n", __func__); 155 int error = ieee80211_media_change(ifp); 156 /* NB: only the fixed rate can change and that doesn't need a reset */ 157 return (error == ENETRESET ? 0 : error); 158 } 159 160 /* 161 * Intercept management frames to collect beacon rssi data 162 * and to do ibss merges. 163 */ 164 static void 165 wtap_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m, 166 int subtype, int rssi, int nf) 167 { 168 struct ieee80211vap *vap = ni->ni_vap; 169 #if 0 170 DWTAP_PRINTF("[%d] %s\n", myath_id(ni), __func__); 171 #endif 172 WTAP_VAP(vap)->av_recv_mgmt(ni, m, subtype, rssi, nf); 173 } 174 175 static int 176 wtap_reset_vap(struct ieee80211vap *vap, u_long cmd) 177 { 178 179 DWTAP_PRINTF("%s\n", __func__); 180 return 0; 181 } 182 183 static void 184 wtap_beacon_update(struct ieee80211vap *vap, int item) 185 { 186 struct ieee80211_beacon_offsets *bo = &WTAP_VAP(vap)->av_boff; 187 188 DWTAP_PRINTF("%s\n", __func__); 189 setbit(bo->bo_flags, item); 190 } 191 192 /* 193 * Allocate and setup an initial beacon frame. 194 */ 195 static int 196 wtap_beacon_alloc(struct wtap_softc *sc, struct ieee80211_node *ni) 197 { 198 struct ieee80211vap *vap = ni->ni_vap; 199 struct wtap_vap *avp = WTAP_VAP(vap); 200 201 DWTAP_PRINTF("[%s] %s\n", ether_sprintf(ni->ni_macaddr), __func__); 202 203 /* 204 * NB: the beacon data buffer must be 32-bit aligned; 205 * we assume the mbuf routines will return us something 206 * with this alignment (perhaps should assert). 207 */ 208 avp->beacon = ieee80211_beacon_alloc(ni, &avp->av_boff); 209 if (avp->beacon == NULL) { 210 printf("%s: cannot get mbuf\n", __func__); 211 return ENOMEM; 212 } 213 callout_init(&avp->av_swba, 0); 214 avp->bf_node = ieee80211_ref_node(ni); 215 216 return 0; 217 } 218 219 static void 220 wtap_beacon_config(struct wtap_softc *sc, struct ieee80211vap *vap) 221 { 222 223 DWTAP_PRINTF("%s\n", __func__); 224 } 225 226 static void 227 wtap_beacon_intrp(void *arg) 228 { 229 struct wtap_vap *avp = arg; 230 struct ieee80211vap *vap = arg; 231 struct mbuf *m; 232 233 if (vap->iv_state < IEEE80211_S_RUN) { 234 DWTAP_PRINTF("Skip beacon, not running, state %d", vap->iv_state); 235 return ; 236 } 237 DWTAP_PRINTF("[%d] beacon intrp\n", avp->id); //burst mode 238 /* 239 * Update dynamic beacon contents. If this returns 240 * non-zero then we need to remap the memory because 241 * the beacon frame changed size (probably because 242 * of the TIM bitmap). 243 */ 244 m = m_dup(avp->beacon, M_DONTWAIT); 245 if (ieee80211_beacon_update(avp->bf_node, &avp->av_boff, m, 0)) { 246 printf("%s, need to remap the memory because the beacon frame" 247 " changed size.\n",__func__); 248 } 249 250 if (ieee80211_radiotap_active_vap(vap)) 251 ieee80211_radiotap_tx(vap, m); 252 253 #if 0 254 medium_transmit(avp->av_md, avp->id, m); 255 #endif 256 wtap_medium_enqueue(avp, m); 257 callout_schedule(&avp->av_swba, avp->av_bcinterval); 258 } 259 260 static int 261 wtap_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 262 { 263 struct ieee80211com *ic = vap->iv_ic; 264 struct wtap_softc *sc = ic->ic_ifp->if_softc; 265 struct wtap_vap *avp = WTAP_VAP(vap); 266 struct ieee80211_node *ni = NULL; 267 int error; 268 269 DWTAP_PRINTF("%s\n", __func__); 270 271 ni = vap->iv_bss; 272 /* 273 * Invoke the parent method to do net80211 work. 274 */ 275 error = avp->av_newstate(vap, nstate, arg); 276 if (error != 0) 277 goto bad; 278 279 if (nstate == IEEE80211_S_RUN) { 280 /* NB: collect bss node again, it may have changed */ 281 ni = vap->iv_bss; 282 switch (vap->iv_opmode) { 283 case IEEE80211_M_MBSS: 284 error = wtap_beacon_alloc(sc, ni); 285 if (error != 0) 286 goto bad; 287 wtap_beacon_config(sc, vap); 288 callout_reset(&avp->av_swba, avp->av_bcinterval, 289 wtap_beacon_intrp, vap); 290 break; 291 default: 292 goto bad; 293 } 294 } else if (nstate == IEEE80211_S_INIT) { 295 callout_stop(&avp->av_swba); 296 } 297 return 0; 298 bad: 299 printf("%s: bad\n", __func__); 300 return error; 301 } 302 303 static void 304 wtap_bmiss(struct ieee80211vap *vap) 305 { 306 struct wtap_vap *avp = (struct wtap_vap *)vap; 307 308 DWTAP_PRINTF("%s\n", __func__); 309 avp->av_bmiss(vap); 310 } 311 312 static struct ieee80211vap * 313 wtap_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], 314 int unit, enum ieee80211_opmode opmode, int flags, 315 const uint8_t bssid[IEEE80211_ADDR_LEN], 316 const uint8_t mac[IEEE80211_ADDR_LEN]) 317 { 318 struct wtap_softc *sc = ic->ic_ifp->if_softc; 319 struct ieee80211vap *vap; 320 struct wtap_vap *avp; 321 int error; 322 323 DWTAP_PRINTF("%s\n", __func__); 324 325 avp = (struct wtap_vap *) malloc(sizeof(struct wtap_vap), 326 M_80211_VAP, M_NOWAIT | M_ZERO); 327 avp->id = sc->id; 328 avp->av_md = sc->sc_md; 329 avp->av_bcinterval = msecs_to_ticks(BEACON_INTRERVAL + 100*sc->id); 330 vap = (struct ieee80211vap *) avp; 331 error = ieee80211_vap_setup(ic, vap, name, unit, IEEE80211_M_MBSS, 332 flags | IEEE80211_CLONE_NOBEACONS, bssid, mac); 333 334 /* override various methods */ 335 avp->av_recv_mgmt = vap->iv_recv_mgmt; 336 vap->iv_recv_mgmt = wtap_recv_mgmt; 337 vap->iv_reset = wtap_reset_vap; 338 vap->iv_update_beacon = wtap_beacon_update; 339 avp->av_newstate = vap->iv_newstate; 340 vap->iv_newstate = wtap_newstate; 341 avp->av_bmiss = vap->iv_bmiss; 342 vap->iv_bmiss = wtap_bmiss; 343 344 /* complete setup */ 345 ieee80211_vap_attach(vap, wtap_media_change, ieee80211_media_status); 346 avp->av_dev = make_dev(&wtap_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, 347 (const char *)ic->ic_ifp->if_xname); 348 349 /* TODO this is a hack to force it to choose the rate we want */ 350 vap->iv_bss->ni_txrate = 130; 351 return vap; 352 } 353 354 static void 355 wtap_vap_delete(struct ieee80211vap *vap) 356 { 357 struct wtap_vap *avp = WTAP_VAP(vap); 358 359 DWTAP_PRINTF("%s\n", __func__); 360 destroy_dev(avp->av_dev); 361 callout_stop(&avp->av_swba); 362 ieee80211_vap_detach(vap); 363 free((struct wtap_vap*) vap, M_80211_VAP); 364 } 365 366 /* NB: This function is not used. 367 * I had the problem of the queue 368 * being empty all the time. 369 * Maybe I am setting the queue wrong? 370 */ 371 static void 372 wtap_start(struct ifnet *ifp) 373 { 374 struct ieee80211com *ic = ifp->if_l2com; 375 struct ifnet *icifp = ic->ic_ifp; 376 struct wtap_softc *sc = icifp->if_softc; 377 struct ieee80211_node *ni; 378 struct mbuf *m; 379 380 DWTAP_PRINTF("my_start, with id=%u\n", sc->id); 381 382 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->up == 0) 383 return; 384 for (;;) { 385 if(IFQ_IS_EMPTY(&ifp->if_snd)){ 386 printf("queue empty, just trying to see " 387 "if the other queue is empty\n"); 388 #if 0 389 printf("queue for id=1, %u\n", 390 IFQ_IS_EMPTY(&global_mscs[1]->ifp->if_snd)); 391 printf("queue for id=0, %u\n", 392 IFQ_IS_EMPTY(&global_mscs[0]->ifp->if_snd)); 393 #endif 394 break; 395 } 396 IFQ_DEQUEUE(&ifp->if_snd, m); 397 if (m == NULL) { 398 printf("error dequeueing from ifp->snd\n"); 399 break; 400 } 401 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 402 /* 403 * Check for fragmentation. If this frame 404 * has been broken up verify we have enough 405 * buffers to send all the fragments so all 406 * go out or none... 407 */ 408 #if 0 409 STAILQ_INIT(&frags); 410 #endif 411 if ((m->m_flags & M_FRAG)){ 412 printf("dont support frags\n"); 413 ifp->if_oerrors++; 414 return; 415 } 416 ifp->if_opackets++; 417 if(wtap_raw_xmit(ni, m, NULL) < 0){ 418 printf("error raw_xmiting\n"); 419 ifp->if_oerrors++; 420 return; 421 } 422 } 423 } 424 425 static int 426 wtap_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 427 { 428 #if 0 429 DWTAP_PRINTF("%s\n", __func__); 430 uprintf("%s, command %lu\n", __func__, cmd); 431 #endif 432 #define IS_RUNNING(ifp) \ 433 ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 434 struct ieee80211com *ic = ifp->if_l2com; 435 struct wtap_softc *sc = ifp->if_softc; 436 struct ifreq *ifr = (struct ifreq *)data; 437 int error = 0; 438 439 switch (cmd) { 440 case SIOCSIFFLAGS: 441 //printf("%s: %s\n", __func__, "SIOCSIFFLAGS"); 442 if (IS_RUNNING(ifp)) { 443 DWTAP_PRINTF("running\n"); 444 #if 0 445 /* 446 * To avoid rescanning another access point, 447 * do not call ath_init() here. Instead, 448 * only reflect promisc mode settings. 449 */ 450 //ath_mode_init(sc); 451 #endif 452 } else if (ifp->if_flags & IFF_UP) { 453 DWTAP_PRINTF("up\n"); 454 sc->up = 1; 455 #if 0 456 /* 457 * Beware of being called during attach/detach 458 * to reset promiscuous mode. In that case we 459 * will still be marked UP but not RUNNING. 460 * However trying to re-init the interface 461 * is the wrong thing to do as we've already 462 * torn down much of our state. There's 463 * probably a better way to deal with this. 464 */ 465 //if (!sc->sc_invalid) 466 // ath_init(sc); /* XXX lose error */ 467 #endif 468 ifp->if_drv_flags |= IFF_DRV_RUNNING; 469 ieee80211_start_all(ic); 470 } else { 471 DWTAP_PRINTF("stoping\n"); 472 #if 0 473 ath_stop_locked(ifp); 474 #ifdef notyet 475 /* XXX must wakeup in places like ath_vap_delete */ 476 if (!sc->sc_invalid) 477 ath_hal_setpower(sc->sc_ah, HAL_PM_FULL_SLEEP); 478 #endif 479 #endif 480 } 481 break; 482 case SIOCGIFMEDIA: 483 case SIOCSIFMEDIA: 484 #if 0 485 DWTAP_PRINTF("%s: %s\n", __func__, "SIOCGIFMEDIA|SIOCSIFMEDIA"); 486 #endif 487 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 488 break; 489 case SIOCGIFADDR: 490 #if 0 491 DWTAP_PRINTF("%s: %s\n", __func__, "SIOCGIFADDR"); 492 #endif 493 error = ether_ioctl(ifp, cmd, data); 494 break; 495 default: 496 DWTAP_PRINTF("%s: %s [%lu]\n", __func__, "EINVAL", cmd); 497 error = EINVAL; 498 break; 499 } 500 return error; 501 #undef IS_RUNNING 502 } 503 504 static void 505 wtap_init(void *arg){ 506 507 DWTAP_PRINTF("%s\n", __func__); 508 } 509 510 static void 511 wtap_scan_start(struct ieee80211com *ic) 512 { 513 514 #if 0 515 DWTAP_PRINTF("%s\n", __func__); 516 #endif 517 } 518 519 static void 520 wtap_scan_end(struct ieee80211com *ic) 521 { 522 523 #if 0 524 DWTAP_PRINTF("%s\n", __func__); 525 #endif 526 } 527 528 static void 529 wtap_set_channel(struct ieee80211com *ic) 530 { 531 532 #if 0 533 DWTAP_PRINTF("%s\n", __func__); 534 #endif 535 } 536 537 static int 538 wtap_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 539 const struct ieee80211_bpf_params *params) 540 { 541 #if 0 542 DWTAP_PRINTF("%s, %p\n", __func__, m); 543 #endif 544 struct ieee80211vap *vap = ni->ni_vap; 545 struct wtap_vap *avp = WTAP_VAP(vap); 546 547 if (ieee80211_radiotap_active_vap(vap)) { 548 ieee80211_radiotap_tx(vap, m); 549 } 550 if (m->m_flags & M_TXCB) 551 ieee80211_process_callback(ni, m, 0); 552 ieee80211_free_node(ni); 553 return wtap_medium_enqueue(avp, m); 554 } 555 556 void 557 wtap_inject(struct wtap_softc *sc, struct mbuf *m) 558 { 559 struct wtap_buf *bf = (struct wtap_buf *)malloc(sizeof(struct wtap_buf), 560 M_WTAP_RXBUF, M_NOWAIT | M_ZERO); 561 KASSERT(bf != NULL, ("could not allocated a new wtap_buf\n")); 562 bf->m = m; 563 564 mtx_lock(&sc->sc_mtx); 565 STAILQ_INSERT_TAIL(&sc->sc_rxbuf, bf, bf_list); 566 taskqueue_enqueue(sc->sc_tq, &sc->sc_rxtask); 567 mtx_unlock(&sc->sc_mtx); 568 } 569 570 void 571 wtap_rx_deliver(struct wtap_softc *sc, struct mbuf *m) 572 { 573 struct ifnet *ifp = sc->sc_ifp; 574 struct ieee80211com *ic = ifp->if_l2com; 575 struct ieee80211_node *ni; 576 int type; 577 #if 0 578 DWTAP_PRINTF("%s\n", __func__); 579 #endif 580 581 DWTAP_PRINTF("[%d] receiving m=%p\n", sc->id, m); 582 if (m == NULL) { /* NB: shouldn't happen */ 583 if_printf(ifp, "%s: no mbuf!\n", __func__); 584 } 585 586 ifp->if_ipackets++; 587 588 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 0,0,0); 589 590 /* 591 * Locate the node for sender, track state, and then 592 * pass the (referenced) node up to the 802.11 layer 593 * for its use. 594 */ 595 ni = ieee80211_find_rxnode_withkey(ic, 596 mtod(m, const struct ieee80211_frame_min *),IEEE80211_KEYIX_NONE); 597 if (ni != NULL) { 598 /* 599 * Sending station is known, dispatch directly. 600 */ 601 type = ieee80211_input(ni, m, 1<<7, 10); 602 ieee80211_free_node(ni); 603 } else { 604 type = ieee80211_input_all(ic, m, 1<<7, 10); 605 } 606 } 607 608 static void 609 wtap_rx_proc(void *arg, int npending) 610 { 611 struct wtap_softc *sc = (struct wtap_softc *)arg; 612 struct ifnet *ifp = sc->sc_ifp; 613 struct ieee80211com *ic = ifp->if_l2com; 614 struct mbuf *m; 615 struct ieee80211_node *ni; 616 int type; 617 struct wtap_buf *bf; 618 619 #if 0 620 DWTAP_PRINTF("%s\n", __func__); 621 #endif 622 623 for(;;) { 624 mtx_lock(&sc->sc_mtx); 625 bf = STAILQ_FIRST(&sc->sc_rxbuf); 626 if (bf == NULL) { 627 mtx_unlock(&sc->sc_mtx); 628 return; 629 } 630 STAILQ_REMOVE_HEAD(&sc->sc_rxbuf, bf_list); 631 mtx_unlock(&sc->sc_mtx); 632 KASSERT(bf != NULL, ("wtap_buf is NULL\n")); 633 m = bf->m; 634 DWTAP_PRINTF("[%d] receiving m=%p\n", sc->id, bf->m); 635 if (m == NULL) { /* NB: shouldn't happen */ 636 if_printf(ifp, "%s: no mbuf!\n", __func__); 637 free(bf, M_WTAP_RXBUF); 638 return; 639 } 640 641 ifp->if_ipackets++; 642 #if 0 643 ieee80211_dump_pkt(ic, mtod(m, caddr_t), 0,0,0); 644 #endif 645 646 /* 647 * Locate the node for sender, track state, and then 648 * pass the (referenced) node up to the 802.11 layer 649 * for its use. 650 */ 651 ni = ieee80211_find_rxnode_withkey(ic, 652 mtod(m, const struct ieee80211_frame_min *), 653 IEEE80211_KEYIX_NONE); 654 if (ni != NULL) { 655 /* 656 * Sending station is known, dispatch directly. 657 */ 658 #if 0 659 ieee80211_radiotap_rx(ni->ni_vap, m); 660 #endif 661 type = ieee80211_input(ni, m, 1<<7, 10); 662 ieee80211_free_node(ni); 663 } else { 664 #if 0 665 ieee80211_radiotap_rx_all(ic, m); 666 #endif 667 type = ieee80211_input_all(ic, m, 1<<7, 10); 668 } 669 670 /* The mbufs are freed by the Net80211 stack */ 671 free(bf, M_WTAP_RXBUF); 672 } 673 } 674 675 static void 676 wtap_newassoc(struct ieee80211_node *ni, int isnew) 677 { 678 679 DWTAP_PRINTF("%s\n", __func__); 680 } 681 682 /* 683 * Callback from the 802.11 layer to update WME parameters. 684 */ 685 static int 686 wtap_wme_update(struct ieee80211com *ic) 687 { 688 689 DWTAP_PRINTF("%s\n", __func__); 690 return 0; 691 } 692 693 static void 694 wtap_update_mcast(struct ifnet *ifp) 695 { 696 697 DWTAP_PRINTF("%s\n", __func__); 698 } 699 700 static void 701 wtap_update_promisc(struct ifnet *ifp) 702 { 703 704 DWTAP_PRINTF("%s\n", __func__); 705 } 706 707 static int 708 wtap_if_transmit(struct ifnet *ifp, struct mbuf *m) 709 { 710 struct ieee80211_node *ni = 711 (struct ieee80211_node *) m->m_pkthdr.rcvif; 712 struct ieee80211vap *vap = ni->ni_vap; 713 struct wtap_vap *avp = WTAP_VAP(vap); 714 715 if(ni == NULL){ 716 printf("m->m_pkthdr.rcvif is NULL we cant radiotap_tx\n"); 717 }else{ 718 if (ieee80211_radiotap_active_vap(vap)) 719 ieee80211_radiotap_tx(vap, m); 720 } 721 if (m->m_flags & M_TXCB) 722 ieee80211_process_callback(ni, m, 0); 723 ieee80211_free_node(ni); 724 return wtap_medium_enqueue(avp, m); 725 } 726 727 static struct ieee80211_node * 728 wtap_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 729 { 730 struct ieee80211_node *ni; 731 732 DWTAP_PRINTF("%s\n", __func__); 733 734 ni = malloc(sizeof(struct ieee80211_node), M_80211_NODE, 735 M_NOWAIT|M_ZERO); 736 737 ni->ni_txrate = 130; 738 return ni; 739 } 740 741 static void 742 wtap_node_free(struct ieee80211_node *ni) 743 { 744 struct ieee80211com *ic = ni->ni_ic; 745 struct wtap_softc *sc = ic->ic_ifp->if_softc; 746 747 DWTAP_PRINTF("%s\n", __func__); 748 sc->sc_node_free(ni); 749 } 750 751 int32_t 752 wtap_attach(struct wtap_softc *sc, const uint8_t *macaddr) 753 { 754 struct ifnet *ifp; 755 struct ieee80211com *ic; 756 char wtap_name[] = {'w','T','a','p',sc->id, 757 '_','t','a','s','k','q','\0'}; 758 759 DWTAP_PRINTF("%s\n", __func__); 760 761 ifp = if_alloc(IFT_IEEE80211); 762 if (ifp == NULL) { 763 printf("can not if_alloc()\n"); 764 return -1; 765 } 766 ic = ifp->if_l2com; 767 if_initname(ifp, "wtap", sc->id); 768 769 sc->sc_ifp = ifp; 770 sc->up = 0; 771 772 STAILQ_INIT(&sc->sc_rxbuf); 773 sc->sc_tq = taskqueue_create(wtap_name, M_NOWAIT | M_ZERO, 774 taskqueue_thread_enqueue, &sc->sc_tq); 775 taskqueue_start_threads(&sc->sc_tq, 1, PI_SOFT, "%s taskQ", 776 ifp->if_xname); 777 TASK_INIT(&sc->sc_rxtask, 0, wtap_rx_proc, sc); 778 779 ifp->if_softc = sc; 780 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 781 ifp->if_start = wtap_start; 782 ifp->if_ioctl = wtap_ioctl; 783 ifp->if_init = wtap_init; 784 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 785 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 786 IFQ_SET_READY(&ifp->if_snd); 787 788 ic->ic_ifp = ifp; 789 ic->ic_phytype = IEEE80211_T_DS; 790 ic->ic_opmode = IEEE80211_M_MBSS; 791 ic->ic_caps = IEEE80211_C_MBSS; 792 793 ic->ic_max_keyix = 128; /* A value read from Atheros ATH_KEYMAX */ 794 795 ic->ic_regdomain.regdomain = SKU_ETSI; 796 ic->ic_regdomain.country = CTRY_SWEDEN; 797 ic->ic_regdomain.location = 1; /* Indoors */ 798 ic->ic_regdomain.isocc[0] = 'S'; 799 ic->ic_regdomain.isocc[1] = 'E'; 800 /* 801 * Indicate we need the 802.11 header padded to a 802 * 32-bit boundary for 4-address and QoS frames. 803 */ 804 ic->ic_flags |= IEEE80211_F_DATAPAD; 805 ic->ic_nchans = 1; 806 ic->ic_channels[0].ic_flags = IEEE80211_CHAN_B; 807 ic->ic_channels[0].ic_freq = 2412; 808 809 ieee80211_ifattach(ic, macaddr); 810 811 #if 0 812 /* new prototype hook-ups */ 813 msc->if_input = ifp->if_input; 814 ifp->if_input = myath_if_input; 815 msc->if_output = ifp->if_output; 816 ifp->if_output = myath_if_output; 817 #endif 818 sc->if_transmit = ifp->if_transmit; 819 ifp->if_transmit = wtap_if_transmit; 820 821 /* override default methods */ 822 ic->ic_newassoc = wtap_newassoc; 823 #if 0 824 ic->ic_updateslot = myath_updateslot; 825 #endif 826 ic->ic_wme.wme_update = wtap_wme_update; 827 ic->ic_vap_create = wtap_vap_create; 828 ic->ic_vap_delete = wtap_vap_delete; 829 ic->ic_raw_xmit = wtap_raw_xmit; 830 ic->ic_update_mcast = wtap_update_mcast; 831 ic->ic_update_promisc = wtap_update_promisc; 832 833 sc->sc_node_alloc = ic->ic_node_alloc; 834 ic->ic_node_alloc = wtap_node_alloc; 835 sc->sc_node_free = ic->ic_node_free; 836 ic->ic_node_free = wtap_node_free; 837 838 #if 0 839 ic->ic_node_getsignal = myath_node_getsignal; 840 #endif 841 ic->ic_scan_start = wtap_scan_start; 842 ic->ic_scan_end = wtap_scan_end; 843 ic->ic_set_channel = wtap_set_channel; 844 845 ieee80211_radiotap_attach(ic, 846 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th), 847 WTAP_TX_RADIOTAP_PRESENT, 848 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th), 849 WTAP_RX_RADIOTAP_PRESENT); 850 851 /* Work here, we must find a way to populate the rate table */ 852 #if 0 853 if(ic->ic_rt == NULL){ 854 printf("no table for ic_curchan\n"); 855 ic->ic_rt = ieee80211_get_ratetable(&ic->ic_channels[0]); 856 } 857 printf("ic->ic_rt =%p\n", ic->ic_rt); 858 printf("rate count %d\n", ic->ic_rt->rateCount); 859 860 uint8_t code = ic->ic_rt->info[0].dot11Rate; 861 uint8_t cix = ic->ic_rt->info[0].ctlRateIndex; 862 uint8_t ctl_rate = ic->ic_rt->info[cix].dot11Rate; 863 printf("code=%d, cix=%d, ctl_rate=%d\n", code, cix, ctl_rate); 864 865 uint8_t rix0 = ic->ic_rt->rateCodeToIndex[130]; 866 uint8_t rix1 = ic->ic_rt->rateCodeToIndex[132]; 867 uint8_t rix2 = ic->ic_rt->rateCodeToIndex[139]; 868 uint8_t rix3 = ic->ic_rt->rateCodeToIndex[150]; 869 printf("rix0 %u,rix1 %u,rix2 %u,rix3 %u\n", rix0,rix1,rix2,rix3); 870 printf("lpAckDuration=%u\n", ic->ic_rt->info[0].lpAckDuration); 871 printf("rate=%d\n", ic->ic_rt->info[0].rateKbps); 872 #endif 873 return 0; 874 } 875 876 int32_t 877 wtap_detach(struct wtap_softc *sc) 878 { 879 struct ifnet *ifp = sc->sc_ifp; 880 struct ieee80211com *ic = ifp->if_l2com; 881 882 DWTAP_PRINTF("%s\n", __func__); 883 ieee80211_ageq_drain(&ic->ic_stageq); 884 ieee80211_ifdetach(ic); 885 if_free(ifp); 886 return 0; 887 } 888 889 void 890 wtap_resume(struct wtap_softc *sc) 891 { 892 893 DWTAP_PRINTF("%s\n", __func__); 894 } 895 896 void 897 wtap_suspend(struct wtap_softc *sc) 898 { 899 900 DWTAP_PRINTF("%s\n", __func__); 901 } 902 903 void 904 wtap_shutdown(struct wtap_softc *sc) 905 { 906 907 DWTAP_PRINTF("%s\n", __func__); 908 } 909 910 void 911 wtap_intr(struct wtap_softc *sc) 912 { 913 914 DWTAP_PRINTF("%s\n", __func__); 915 } 916