1 /* 2 * Driver interaction with Linux Host AP driver 3 * Copyright (c) 2003-2005, Jouni Malinen <j (at) w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "includes.h" 16 #include <sys/ioctl.h> 17 18 #include "wireless_copy.h" 19 #include "common.h" 20 #include "driver.h" 21 #include "driver_wext.h" 22 #include "eloop.h" 23 #include "driver_hostap.h" 24 25 26 #ifdef HOSTAPD 27 28 #include <net/if_arp.h> 29 #include <netpacket/packet.h> 30 31 #include "priv_netlink.h" 32 #include "netlink.h" 33 #include "linux_ioctl.h" 34 #include "common/ieee802_11_defs.h" 35 36 37 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X 38 * frames that might be longer than normal default MTU and they are not 39 * fragmented */ 40 #define HOSTAPD_MTU 2290 41 42 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; 43 44 struct hostap_driver_data { 45 struct hostapd_data *hapd; 46 47 char iface[IFNAMSIZ + 1]; 48 int sock; /* raw packet socket for driver access */ 49 int ioctl_sock; /* socket for ioctl() use */ 50 struct netlink_data *netlink; 51 52 int we_version; 53 54 u8 *generic_ie; 55 size_t generic_ie_len; 56 u8 *wps_ie; 57 size_t wps_ie_len; 58 }; 59 60 61 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param, 62 int len); 63 static int hostap_set_iface_flags(void *priv, int dev_up); 64 65 static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len, 66 u16 stype) 67 { 68 struct ieee80211_hdr *hdr; 69 u16 fc, ethertype; 70 u8 *pos, *sa; 71 size_t left; 72 union wpa_event_data event; 73 74 if (len < sizeof(struct ieee80211_hdr)) 75 return; 76 77 hdr = (struct ieee80211_hdr *) buf; 78 fc = le_to_host16(hdr->frame_control); 79 80 if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) { 81 printf("Not ToDS data frame (fc=0x%04x)\n", fc); 82 return; 83 } 84 85 sa = hdr->addr2; 86 os_memset(&event, 0, sizeof(event)); 87 event.rx_from_unknown.frame = buf; 88 event.rx_from_unknown.len = len; 89 wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event); 90 91 pos = (u8 *) (hdr + 1); 92 left = len - sizeof(*hdr); 93 94 if (left < sizeof(rfc1042_header)) { 95 printf("Too short data frame\n"); 96 return; 97 } 98 99 if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) { 100 printf("Data frame with no RFC1042 header\n"); 101 return; 102 } 103 pos += sizeof(rfc1042_header); 104 left -= sizeof(rfc1042_header); 105 106 if (left < 2) { 107 printf("No ethertype in data frame\n"); 108 return; 109 } 110 111 ethertype = WPA_GET_BE16(pos); 112 pos += 2; 113 left -= 2; 114 switch (ethertype) { 115 case ETH_P_PAE: 116 drv_event_eapol_rx(drv->hapd, sa, pos, left); 117 break; 118 119 default: 120 printf("Unknown ethertype 0x%04x in data frame\n", ethertype); 121 break; 122 } 123 } 124 125 126 static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf, 127 size_t len, int ok) 128 { 129 struct ieee80211_hdr *hdr; 130 u16 fc; 131 union wpa_event_data event; 132 133 hdr = (struct ieee80211_hdr *) buf; 134 fc = le_to_host16(hdr->frame_control); 135 136 os_memset(&event, 0, sizeof(event)); 137 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 138 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 139 event.tx_status.dst = hdr->addr1; 140 event.tx_status.data = buf; 141 event.tx_status.data_len = len; 142 event.tx_status.ack = ok; 143 wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event); 144 } 145 146 147 static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len) 148 { 149 struct ieee80211_hdr *hdr; 150 u16 fc, extra_len, type, stype; 151 unsigned char *extra = NULL; 152 size_t data_len = len; 153 int ver; 154 union wpa_event_data event; 155 156 /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass 157 * these to user space */ 158 if (len < 24) { 159 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)", 160 (unsigned long) len); 161 return; 162 } 163 164 hdr = (struct ieee80211_hdr *) buf; 165 fc = le_to_host16(hdr->frame_control); 166 type = WLAN_FC_GET_TYPE(fc); 167 stype = WLAN_FC_GET_STYPE(fc); 168 169 if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) { 170 wpa_hexdump(MSG_MSGDUMP, "Received management frame", 171 buf, len); 172 } 173 174 ver = fc & WLAN_FC_PVER; 175 176 /* protocol version 3 is reserved for indicating extra data after the 177 * payload, version 2 for indicating ACKed frame (TX callbacks), and 178 * version 1 for indicating failed frame (no ACK, TX callbacks) */ 179 if (ver == 3) { 180 u8 *pos = buf + len - 2; 181 extra_len = WPA_GET_LE16(pos); 182 printf("extra data in frame (elen=%d)\n", extra_len); 183 if ((size_t) extra_len + 2 > len) { 184 printf(" extra data overflow\n"); 185 return; 186 } 187 len -= extra_len + 2; 188 extra = buf + len; 189 } else if (ver == 1 || ver == 2) { 190 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0); 191 return; 192 } else if (ver != 0) { 193 printf("unknown protocol version %d\n", ver); 194 return; 195 } 196 197 switch (type) { 198 case WLAN_FC_TYPE_MGMT: 199 os_memset(&event, 0, sizeof(event)); 200 event.rx_mgmt.frame = buf; 201 event.rx_mgmt.frame_len = data_len; 202 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event); 203 break; 204 case WLAN_FC_TYPE_CTRL: 205 wpa_printf(MSG_DEBUG, "CTRL"); 206 break; 207 case WLAN_FC_TYPE_DATA: 208 wpa_printf(MSG_DEBUG, "DATA"); 209 handle_data(drv, buf, data_len, stype); 210 break; 211 default: 212 wpa_printf(MSG_DEBUG, "unknown frame type %d", type); 213 break; 214 } 215 } 216 217 218 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx) 219 { 220 struct hostap_driver_data *drv = eloop_ctx; 221 int len; 222 unsigned char buf[3000]; 223 224 len = recv(sock, buf, sizeof(buf), 0); 225 if (len < 0) { 226 perror("recv"); 227 return; 228 } 229 230 handle_frame(drv, buf, len); 231 } 232 233 234 static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr) 235 { 236 struct ifreq ifr; 237 struct sockaddr_ll addr; 238 239 drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); 240 if (drv->sock < 0) { 241 perror("socket[PF_PACKET,SOCK_RAW]"); 242 return -1; 243 } 244 245 if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) { 246 printf("Could not register read socket\n"); 247 return -1; 248 } 249 250 memset(&ifr, 0, sizeof(ifr)); 251 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface); 252 if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) { 253 perror("ioctl(SIOCGIFINDEX)"); 254 return -1; 255 } 256 257 if (hostap_set_iface_flags(drv, 1)) { 258 return -1; 259 } 260 261 memset(&addr, 0, sizeof(addr)); 262 addr.sll_family = AF_PACKET; 263 addr.sll_ifindex = ifr.ifr_ifindex; 264 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d", 265 addr.sll_ifindex); 266 267 if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 268 perror("bind"); 269 return -1; 270 } 271 272 return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr); 273 } 274 275 276 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len) 277 { 278 struct hostap_driver_data *drv = priv; 279 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg; 280 int res; 281 282 /* Request TX callback */ 283 hdr->frame_control |= host_to_le16(BIT(1)); 284 res = send(drv->sock, msg, len, 0); 285 hdr->frame_control &= ~host_to_le16(BIT(1)); 286 287 return res; 288 } 289 290 291 static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data, 292 size_t data_len, int encrypt, const u8 *own_addr, 293 u32 flags) 294 { 295 struct hostap_driver_data *drv = priv; 296 struct ieee80211_hdr *hdr; 297 size_t len; 298 u8 *pos; 299 int res; 300 301 len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len; 302 hdr = os_zalloc(len); 303 if (hdr == NULL) { 304 printf("malloc() failed for hostapd_send_data(len=%lu)\n", 305 (unsigned long) len); 306 return -1; 307 } 308 309 hdr->frame_control = 310 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA); 311 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS); 312 if (encrypt) 313 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP); 314 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN); 315 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN); 316 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN); 317 318 pos = (u8 *) (hdr + 1); 319 memcpy(pos, rfc1042_header, sizeof(rfc1042_header)); 320 pos += sizeof(rfc1042_header); 321 *((u16 *) pos) = htons(ETH_P_PAE); 322 pos += 2; 323 memcpy(pos, data, data_len); 324 325 res = hostap_send_mlme(drv, (u8 *) hdr, len); 326 if (res < 0) { 327 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - " 328 "failed: %d (%s)", 329 (unsigned long) len, errno, strerror(errno)); 330 } 331 free(hdr); 332 333 return res; 334 } 335 336 337 static int hostap_sta_set_flags(void *priv, const u8 *addr, 338 int total_flags, int flags_or, int flags_and) 339 { 340 struct hostap_driver_data *drv = priv; 341 struct prism2_hostapd_param param; 342 343 if (flags_or & WPA_STA_AUTHORIZED) 344 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */ 345 if (!(flags_and & WPA_STA_AUTHORIZED)) 346 flags_and = ~BIT(5); 347 else 348 flags_and = ~0; 349 memset(¶m, 0, sizeof(param)); 350 param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA; 351 memcpy(param.sta_addr, addr, ETH_ALEN); 352 param.u.set_flags_sta.flags_or = flags_or; 353 param.u.set_flags_sta.flags_and = flags_and; 354 return hostapd_ioctl(drv, ¶m, sizeof(param)); 355 } 356 357 358 static int hostap_set_iface_flags(void *priv, int dev_up) 359 { 360 struct hostap_driver_data *drv = priv; 361 struct ifreq ifr; 362 char ifname[IFNAMSIZ]; 363 364 os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface); 365 if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0) 366 return -1; 367 368 if (dev_up) { 369 memset(&ifr, 0, sizeof(ifr)); 370 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); 371 ifr.ifr_mtu = HOSTAPD_MTU; 372 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) { 373 perror("ioctl[SIOCSIFMTU]"); 374 printf("Setting MTU failed - trying to survive with " 375 "current value\n"); 376 } 377 } 378 379 return 0; 380 } 381 382 383 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param, 384 int len) 385 { 386 struct hostap_driver_data *drv = priv; 387 struct iwreq iwr; 388 389 memset(&iwr, 0, sizeof(iwr)); 390 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 391 iwr.u.data.pointer = (caddr_t) param; 392 iwr.u.data.length = len; 393 394 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) { 395 perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); 396 return -1; 397 } 398 399 return 0; 400 } 401 402 403 static int wpa_driver_hostap_set_key(const char *ifname, void *priv, 404 enum wpa_alg alg, const u8 *addr, 405 int key_idx, int set_tx, 406 const u8 *seq, size_t seq_len, 407 const u8 *key, size_t key_len) 408 { 409 struct hostap_driver_data *drv = priv; 410 struct prism2_hostapd_param *param; 411 u8 *buf; 412 size_t blen; 413 int ret = 0; 414 415 blen = sizeof(*param) + key_len; 416 buf = os_zalloc(blen); 417 if (buf == NULL) 418 return -1; 419 420 param = (struct prism2_hostapd_param *) buf; 421 param->cmd = PRISM2_SET_ENCRYPTION; 422 if (addr == NULL) 423 memset(param->sta_addr, 0xff, ETH_ALEN); 424 else 425 memcpy(param->sta_addr, addr, ETH_ALEN); 426 switch (alg) { 427 case WPA_ALG_NONE: 428 os_strlcpy((char *) param->u.crypt.alg, "NONE", 429 HOSTAP_CRYPT_ALG_NAME_LEN); 430 break; 431 case WPA_ALG_WEP: 432 os_strlcpy((char *) param->u.crypt.alg, "WEP", 433 HOSTAP_CRYPT_ALG_NAME_LEN); 434 break; 435 case WPA_ALG_TKIP: 436 os_strlcpy((char *) param->u.crypt.alg, "TKIP", 437 HOSTAP_CRYPT_ALG_NAME_LEN); 438 break; 439 case WPA_ALG_CCMP: 440 os_strlcpy((char *) param->u.crypt.alg, "CCMP", 441 HOSTAP_CRYPT_ALG_NAME_LEN); 442 break; 443 default: 444 os_free(buf); 445 return -1; 446 } 447 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0; 448 param->u.crypt.idx = key_idx; 449 param->u.crypt.key_len = key_len; 450 memcpy((u8 *) (param + 1), key, key_len); 451 452 if (hostapd_ioctl(drv, param, blen)) { 453 printf("Failed to set encryption.\n"); 454 ret = -1; 455 } 456 free(buf); 457 458 return ret; 459 } 460 461 462 static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr, 463 int idx, u8 *seq) 464 { 465 struct hostap_driver_data *drv = priv; 466 struct prism2_hostapd_param *param; 467 u8 *buf; 468 size_t blen; 469 int ret = 0; 470 471 blen = sizeof(*param) + 32; 472 buf = os_zalloc(blen); 473 if (buf == NULL) 474 return -1; 475 476 param = (struct prism2_hostapd_param *) buf; 477 param->cmd = PRISM2_GET_ENCRYPTION; 478 if (addr == NULL) 479 memset(param->sta_addr, 0xff, ETH_ALEN); 480 else 481 memcpy(param->sta_addr, addr, ETH_ALEN); 482 param->u.crypt.idx = idx; 483 484 if (hostapd_ioctl(drv, param, blen)) { 485 printf("Failed to get encryption.\n"); 486 ret = -1; 487 } else { 488 memcpy(seq, param->u.crypt.seq, 8); 489 } 490 free(buf); 491 492 return ret; 493 } 494 495 496 static int hostap_ioctl_prism2param(void *priv, int param, int value) 497 { 498 struct hostap_driver_data *drv = priv; 499 struct iwreq iwr; 500 int *i; 501 502 memset(&iwr, 0, sizeof(iwr)); 503 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 504 i = (int *) iwr.u.name; 505 *i++ = param; 506 *i++ = value; 507 508 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) { 509 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]"); 510 return -1; 511 } 512 513 return 0; 514 } 515 516 517 static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params) 518 { 519 struct hostap_driver_data *drv = priv; 520 int enabled = params->enabled; 521 522 /* enable kernel driver support for IEEE 802.1X */ 523 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) { 524 printf("Could not setup IEEE 802.1X support in kernel driver." 525 "\n"); 526 return -1; 527 } 528 529 if (!enabled) 530 return 0; 531 532 /* use host driver implementation of encryption to allow 533 * individual keys and passing plaintext EAPOL frames */ 534 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) || 535 hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) { 536 printf("Could not setup host-based encryption in kernel " 537 "driver.\n"); 538 return -1; 539 } 540 541 return 0; 542 } 543 544 545 static int hostap_set_privacy(void *priv, int enabled) 546 { 547 struct hostap_drvier_data *drv = priv; 548 549 return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED, 550 enabled); 551 } 552 553 554 static int hostap_set_ssid(void *priv, const u8 *buf, int len) 555 { 556 struct hostap_driver_data *drv = priv; 557 struct iwreq iwr; 558 559 memset(&iwr, 0, sizeof(iwr)); 560 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 561 iwr.u.essid.flags = 1; /* SSID active */ 562 iwr.u.essid.pointer = (caddr_t) buf; 563 iwr.u.essid.length = len + 1; 564 565 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) { 566 perror("ioctl[SIOCSIWESSID]"); 567 printf("len=%d\n", len); 568 return -1; 569 } 570 571 return 0; 572 } 573 574 575 static int hostap_flush(void *priv) 576 { 577 struct hostap_driver_data *drv = priv; 578 struct prism2_hostapd_param param; 579 580 memset(¶m, 0, sizeof(param)); 581 param.cmd = PRISM2_HOSTAPD_FLUSH; 582 return hostapd_ioctl(drv, ¶m, sizeof(param)); 583 } 584 585 586 static int hostap_read_sta_data(void *priv, 587 struct hostap_sta_driver_data *data, 588 const u8 *addr) 589 { 590 struct hostap_driver_data *drv = priv; 591 char buf[1024], line[128], *pos; 592 FILE *f; 593 unsigned long val; 594 595 memset(data, 0, sizeof(*data)); 596 snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR, 597 drv->iface, MAC2STR(addr)); 598 599 f = fopen(buf, "r"); 600 if (!f) 601 return -1; 602 /* Need to read proc file with in one piece, so use large enough 603 * buffer. */ 604 setbuffer(f, buf, sizeof(buf)); 605 606 while (fgets(line, sizeof(line), f)) { 607 pos = strchr(line, '='); 608 if (!pos) 609 continue; 610 *pos++ = '\0'; 611 val = strtoul(pos, NULL, 10); 612 if (strcmp(line, "rx_packets") == 0) 613 data->rx_packets = val; 614 else if (strcmp(line, "tx_packets") == 0) 615 data->tx_packets = val; 616 else if (strcmp(line, "rx_bytes") == 0) 617 data->rx_bytes = val; 618 else if (strcmp(line, "tx_bytes") == 0) 619 data->tx_bytes = val; 620 } 621 622 fclose(f); 623 624 return 0; 625 } 626 627 628 static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params) 629 { 630 struct hostap_driver_data *drv = priv; 631 struct prism2_hostapd_param param; 632 int tx_supp_rates = 0; 633 size_t i; 634 635 #define WLAN_RATE_1M BIT(0) 636 #define WLAN_RATE_2M BIT(1) 637 #define WLAN_RATE_5M5 BIT(2) 638 #define WLAN_RATE_11M BIT(3) 639 640 for (i = 0; i < params->supp_rates_len; i++) { 641 if ((params->supp_rates[i] & 0x7f) == 2) 642 tx_supp_rates |= WLAN_RATE_1M; 643 if ((params->supp_rates[i] & 0x7f) == 4) 644 tx_supp_rates |= WLAN_RATE_2M; 645 if ((params->supp_rates[i] & 0x7f) == 11) 646 tx_supp_rates |= WLAN_RATE_5M5; 647 if ((params->supp_rates[i] & 0x7f) == 22) 648 tx_supp_rates |= WLAN_RATE_11M; 649 } 650 651 memset(¶m, 0, sizeof(param)); 652 param.cmd = PRISM2_HOSTAPD_ADD_STA; 653 memcpy(param.sta_addr, params->addr, ETH_ALEN); 654 param.u.add_sta.aid = params->aid; 655 param.u.add_sta.capability = params->capability; 656 param.u.add_sta.tx_supp_rates = tx_supp_rates; 657 return hostapd_ioctl(drv, ¶m, sizeof(param)); 658 } 659 660 661 static int hostap_sta_remove(void *priv, const u8 *addr) 662 { 663 struct hostap_driver_data *drv = priv; 664 struct prism2_hostapd_param param; 665 666 hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED); 667 668 memset(¶m, 0, sizeof(param)); 669 param.cmd = PRISM2_HOSTAPD_REMOVE_STA; 670 memcpy(param.sta_addr, addr, ETH_ALEN); 671 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 672 printf("Could not remove station from kernel driver.\n"); 673 return -1; 674 } 675 return 0; 676 } 677 678 679 static int hostap_get_inact_sec(void *priv, const u8 *addr) 680 { 681 struct hostap_driver_data *drv = priv; 682 struct prism2_hostapd_param param; 683 684 memset(¶m, 0, sizeof(param)); 685 param.cmd = PRISM2_HOSTAPD_GET_INFO_STA; 686 memcpy(param.sta_addr, addr, ETH_ALEN); 687 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 688 return -1; 689 } 690 691 return param.u.get_info_sta.inactive_sec; 692 } 693 694 695 static int hostap_sta_clear_stats(void *priv, const u8 *addr) 696 { 697 struct hostap_driver_data *drv = priv; 698 struct prism2_hostapd_param param; 699 700 memset(¶m, 0, sizeof(param)); 701 param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS; 702 memcpy(param.sta_addr, addr, ETH_ALEN); 703 if (hostapd_ioctl(drv, ¶m, sizeof(param))) { 704 return -1; 705 } 706 707 return 0; 708 } 709 710 711 static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv) 712 { 713 struct prism2_hostapd_param *param; 714 int res; 715 size_t blen, elem_len; 716 717 elem_len = drv->generic_ie_len + drv->wps_ie_len; 718 blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len; 719 if (blen < sizeof(*param)) 720 blen = sizeof(*param); 721 722 param = os_zalloc(blen); 723 if (param == NULL) 724 return -1; 725 726 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT; 727 param->u.generic_elem.len = elem_len; 728 if (drv->generic_ie) { 729 os_memcpy(param->u.generic_elem.data, drv->generic_ie, 730 drv->generic_ie_len); 731 } 732 if (drv->wps_ie) { 733 os_memcpy(¶m->u.generic_elem.data[drv->generic_ie_len], 734 drv->wps_ie, drv->wps_ie_len); 735 } 736 wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE", 737 param->u.generic_elem.data, elem_len); 738 res = hostapd_ioctl(drv, param, blen); 739 740 os_free(param); 741 742 return res; 743 } 744 745 746 static int hostap_set_generic_elem(void *priv, 747 const u8 *elem, size_t elem_len) 748 { 749 struct hostap_driver_data *drv = priv; 750 751 os_free(drv->generic_ie); 752 drv->generic_ie = NULL; 753 drv->generic_ie_len = 0; 754 if (elem) { 755 drv->generic_ie = os_malloc(elem_len); 756 if (drv->generic_ie == NULL) 757 return -1; 758 os_memcpy(drv->generic_ie, elem, elem_len); 759 drv->generic_ie_len = elem_len; 760 } 761 762 return hostapd_ioctl_set_generic_elem(drv); 763 } 764 765 766 static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon, 767 const struct wpabuf *proberesp, 768 const struct wpabuf *assocresp) 769 { 770 struct hostap_driver_data *drv = priv; 771 772 /* 773 * Host AP driver supports only one set of extra IEs, so we need to 774 * use the Probe Response IEs also for Beacon frames since they include 775 * more information. 776 */ 777 778 os_free(drv->wps_ie); 779 drv->wps_ie = NULL; 780 drv->wps_ie_len = 0; 781 if (proberesp) { 782 drv->wps_ie = os_malloc(wpabuf_len(proberesp)); 783 if (drv->wps_ie == NULL) 784 return -1; 785 os_memcpy(drv->wps_ie, wpabuf_head(proberesp), 786 wpabuf_len(proberesp)); 787 drv->wps_ie_len = wpabuf_len(proberesp); 788 } 789 790 return hostapd_ioctl_set_generic_elem(drv); 791 } 792 793 794 static void 795 hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv, 796 char *custom) 797 { 798 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom); 799 800 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) { 801 char *pos; 802 u8 addr[ETH_ALEN]; 803 pos = strstr(custom, "addr="); 804 if (pos == NULL) { 805 wpa_printf(MSG_DEBUG, 806 "MLME-MICHAELMICFAILURE.indication " 807 "without sender address ignored"); 808 return; 809 } 810 pos += 5; 811 if (hwaddr_aton(pos, addr) == 0) { 812 union wpa_event_data data; 813 os_memset(&data, 0, sizeof(data)); 814 data.michael_mic_failure.unicast = 1; 815 data.michael_mic_failure.src = addr; 816 wpa_supplicant_event(drv->hapd, 817 EVENT_MICHAEL_MIC_FAILURE, &data); 818 } else { 819 wpa_printf(MSG_DEBUG, 820 "MLME-MICHAELMICFAILURE.indication " 821 "with invalid MAC address"); 822 } 823 } 824 } 825 826 827 static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv, 828 char *data, int len) 829 { 830 struct iw_event iwe_buf, *iwe = &iwe_buf; 831 char *pos, *end, *custom, *buf; 832 833 pos = data; 834 end = data + len; 835 836 while (pos + IW_EV_LCP_LEN <= end) { 837 /* Event data may be unaligned, so make a local, aligned copy 838 * before processing. */ 839 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN); 840 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d", 841 iwe->cmd, iwe->len); 842 if (iwe->len <= IW_EV_LCP_LEN) 843 return; 844 845 custom = pos + IW_EV_POINT_LEN; 846 if (drv->we_version > 18 && 847 (iwe->cmd == IWEVMICHAELMICFAILURE || 848 iwe->cmd == IWEVCUSTOM)) { 849 /* WE-19 removed the pointer from struct iw_point */ 850 char *dpos = (char *) &iwe_buf.u.data.length; 851 int dlen = dpos - (char *) &iwe_buf; 852 memcpy(dpos, pos + IW_EV_LCP_LEN, 853 sizeof(struct iw_event) - dlen); 854 } else { 855 memcpy(&iwe_buf, pos, sizeof(struct iw_event)); 856 custom += IW_EV_POINT_OFF; 857 } 858 859 switch (iwe->cmd) { 860 case IWEVCUSTOM: 861 if (custom + iwe->u.data.length > end) 862 return; 863 buf = malloc(iwe->u.data.length + 1); 864 if (buf == NULL) 865 return; 866 memcpy(buf, custom, iwe->u.data.length); 867 buf[iwe->u.data.length] = '\0'; 868 hostapd_wireless_event_wireless_custom(drv, buf); 869 free(buf); 870 break; 871 } 872 873 pos += iwe->len; 874 } 875 } 876 877 878 static void hostapd_wireless_event_rtm_newlink(void *ctx, 879 struct ifinfomsg *ifi, 880 u8 *buf, size_t len) 881 { 882 struct hostap_driver_data *drv = ctx; 883 int attrlen, rta_len; 884 struct rtattr *attr; 885 886 /* TODO: use ifi->ifi_index to filter out wireless events from other 887 * interfaces */ 888 889 attrlen = len; 890 attr = (struct rtattr *) buf; 891 892 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 893 while (RTA_OK(attr, attrlen)) { 894 if (attr->rta_type == IFLA_WIRELESS) { 895 hostapd_wireless_event_wireless( 896 drv, ((char *) attr) + rta_len, 897 attr->rta_len - rta_len); 898 } 899 attr = RTA_NEXT(attr, attrlen); 900 } 901 } 902 903 904 static int hostap_get_we_version(struct hostap_driver_data *drv) 905 { 906 struct iw_range *range; 907 struct iwreq iwr; 908 int minlen; 909 size_t buflen; 910 911 drv->we_version = 0; 912 913 /* 914 * Use larger buffer than struct iw_range in order to allow the 915 * structure to grow in the future. 916 */ 917 buflen = sizeof(struct iw_range) + 500; 918 range = os_zalloc(buflen); 919 if (range == NULL) 920 return -1; 921 922 memset(&iwr, 0, sizeof(iwr)); 923 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ); 924 iwr.u.data.pointer = (caddr_t) range; 925 iwr.u.data.length = buflen; 926 927 minlen = ((char *) &range->enc_capa) - (char *) range + 928 sizeof(range->enc_capa); 929 930 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) { 931 perror("ioctl[SIOCGIWRANGE]"); 932 free(range); 933 return -1; 934 } else if (iwr.u.data.length >= minlen && 935 range->we_version_compiled >= 18) { 936 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d " 937 "WE(source)=%d enc_capa=0x%x", 938 range->we_version_compiled, 939 range->we_version_source, 940 range->enc_capa); 941 drv->we_version = range->we_version_compiled; 942 } 943 944 free(range); 945 return 0; 946 } 947 948 949 static int hostap_wireless_event_init(struct hostap_driver_data *drv) 950 { 951 struct netlink_config *cfg; 952 953 hostap_get_we_version(drv); 954 955 cfg = os_zalloc(sizeof(*cfg)); 956 if (cfg == NULL) 957 return -1; 958 cfg->ctx = drv; 959 cfg->newlink_cb = hostapd_wireless_event_rtm_newlink; 960 drv->netlink = netlink_init(cfg); 961 if (drv->netlink == NULL) { 962 os_free(cfg); 963 return -1; 964 } 965 966 return 0; 967 } 968 969 970 static void * hostap_init(struct hostapd_data *hapd, 971 struct wpa_init_params *params) 972 { 973 struct hostap_driver_data *drv; 974 975 drv = os_zalloc(sizeof(struct hostap_driver_data)); 976 if (drv == NULL) { 977 printf("Could not allocate memory for hostapd driver data\n"); 978 return NULL; 979 } 980 981 drv->hapd = hapd; 982 drv->ioctl_sock = drv->sock = -1; 983 memcpy(drv->iface, params->ifname, sizeof(drv->iface)); 984 985 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); 986 if (drv->ioctl_sock < 0) { 987 perror("socket[PF_INET,SOCK_DGRAM]"); 988 free(drv); 989 return NULL; 990 } 991 992 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) { 993 printf("Could not enable hostapd mode for interface %s\n", 994 drv->iface); 995 close(drv->ioctl_sock); 996 free(drv); 997 return NULL; 998 } 999 1000 if (hostap_init_sockets(drv, params->own_addr) || 1001 hostap_wireless_event_init(drv)) { 1002 close(drv->ioctl_sock); 1003 free(drv); 1004 return NULL; 1005 } 1006 1007 return drv; 1008 } 1009 1010 1011 static void hostap_driver_deinit(void *priv) 1012 { 1013 struct hostap_driver_data *drv = priv; 1014 1015 netlink_deinit(drv->netlink); 1016 (void) hostap_set_iface_flags(drv, 0); 1017 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0); 1018 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0); 1019 1020 if (drv->ioctl_sock >= 0) 1021 close(drv->ioctl_sock); 1022 1023 if (drv->sock >= 0) 1024 close(drv->sock); 1025 1026 os_free(drv->generic_ie); 1027 os_free(drv->wps_ie); 1028 1029 free(drv); 1030 } 1031 1032 1033 static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, 1034 int reason) 1035 { 1036 struct hostap_driver_data *drv = priv; 1037 struct ieee80211_mgmt mgmt; 1038 1039 if (is_broadcast_ether_addr(addr)) { 1040 /* 1041 * New Prism2.5/3 STA firmware versions seem to have issues 1042 * with this broadcast deauth frame. This gets the firmware in 1043 * odd state where nothing works correctly, so let's skip 1044 * sending this for the hostap driver. 1045 */ 1046 return 0; 1047 } 1048 1049 memset(&mgmt, 0, sizeof(mgmt)); 1050 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1051 WLAN_FC_STYPE_DEAUTH); 1052 memcpy(mgmt.da, addr, ETH_ALEN); 1053 memcpy(mgmt.sa, own_addr, ETH_ALEN); 1054 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 1055 mgmt.u.deauth.reason_code = host_to_le16(reason); 1056 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN + 1057 sizeof(mgmt.u.deauth)); 1058 } 1059 1060 1061 static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr, 1062 int reason) 1063 { 1064 struct hostap_driver_data *drv = priv; 1065 struct ieee80211_mgmt mgmt; 1066 1067 memset(&mgmt, 0, sizeof(mgmt)); 1068 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1069 WLAN_FC_STYPE_DISASSOC); 1070 memcpy(mgmt.da, addr, ETH_ALEN); 1071 memcpy(mgmt.sa, own_addr, ETH_ALEN); 1072 memcpy(mgmt.bssid, own_addr, ETH_ALEN); 1073 mgmt.u.disassoc.reason_code = host_to_le16(reason); 1074 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN + 1075 sizeof(mgmt.u.disassoc)); 1076 } 1077 1078 1079 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv, 1080 u16 *num_modes, 1081 u16 *flags) 1082 { 1083 struct hostapd_hw_modes *mode; 1084 int i, clen, rlen; 1085 const short chan2freq[14] = { 1086 2412, 2417, 2422, 2427, 2432, 2437, 2442, 1087 2447, 2452, 2457, 2462, 2467, 2472, 2484 1088 }; 1089 1090 mode = os_zalloc(sizeof(struct hostapd_hw_modes)); 1091 if (mode == NULL) 1092 return NULL; 1093 1094 *num_modes = 1; 1095 *flags = 0; 1096 1097 mode->mode = HOSTAPD_MODE_IEEE80211B; 1098 mode->num_channels = 14; 1099 mode->num_rates = 4; 1100 1101 clen = mode->num_channels * sizeof(struct hostapd_channel_data); 1102 rlen = mode->num_rates * sizeof(int); 1103 1104 mode->channels = os_zalloc(clen); 1105 mode->rates = os_zalloc(rlen); 1106 if (mode->channels == NULL || mode->rates == NULL) { 1107 os_free(mode->channels); 1108 os_free(mode->rates); 1109 os_free(mode); 1110 return NULL; 1111 } 1112 1113 for (i = 0; i < 14; i++) { 1114 mode->channels[i].chan = i + 1; 1115 mode->channels[i].freq = chan2freq[i]; 1116 /* TODO: Get allowed channel list from the driver */ 1117 if (i >= 11) 1118 mode->channels[i].flag = HOSTAPD_CHAN_DISABLED; 1119 } 1120 1121 mode->rates[0] = 10; 1122 mode->rates[1] = 20; 1123 mode->rates[2] = 55; 1124 mode->rates[3] = 110; 1125 1126 return mode; 1127 } 1128 1129 #else /* HOSTAPD */ 1130 1131 struct wpa_driver_hostap_data { 1132 void *wext; /* private data for driver_wext */ 1133 void *ctx; 1134 char ifname[IFNAMSIZ + 1]; 1135 int sock; 1136 int current_mode; /* infra/adhoc */ 1137 }; 1138 1139 1140 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg); 1141 1142 1143 static int hostapd_ioctl(struct wpa_driver_hostap_data *drv, 1144 struct prism2_hostapd_param *param, 1145 int len, int show_err) 1146 { 1147 struct iwreq iwr; 1148 1149 os_memset(&iwr, 0, sizeof(iwr)); 1150 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1151 iwr.u.data.pointer = (caddr_t) param; 1152 iwr.u.data.length = len; 1153 1154 if (ioctl(drv->sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) { 1155 int ret = errno; 1156 if (show_err) 1157 perror("ioctl[PRISM2_IOCTL_HOSTAPD]"); 1158 return ret; 1159 } 1160 1161 return 0; 1162 } 1163 1164 1165 static int wpa_driver_hostap_set_wpa_ie(struct wpa_driver_hostap_data *drv, 1166 const u8 *wpa_ie, size_t wpa_ie_len) 1167 { 1168 struct prism2_hostapd_param *param; 1169 int res; 1170 size_t blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + wpa_ie_len; 1171 if (blen < sizeof(*param)) 1172 blen = sizeof(*param); 1173 1174 param = os_zalloc(blen); 1175 if (param == NULL) 1176 return -1; 1177 1178 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT; 1179 param->u.generic_elem.len = wpa_ie_len; 1180 os_memcpy(param->u.generic_elem.data, wpa_ie, wpa_ie_len); 1181 res = hostapd_ioctl(drv, param, blen, 1); 1182 1183 os_free(param); 1184 1185 return res; 1186 } 1187 1188 1189 static int prism2param(struct wpa_driver_hostap_data *drv, int param, 1190 int value) 1191 { 1192 struct iwreq iwr; 1193 int *i, ret = 0; 1194 1195 os_memset(&iwr, 0, sizeof(iwr)); 1196 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1197 i = (int *) iwr.u.name; 1198 *i++ = param; 1199 *i++ = value; 1200 1201 if (ioctl(drv->sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) { 1202 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]"); 1203 ret = -1; 1204 } 1205 return ret; 1206 } 1207 1208 1209 static int wpa_driver_hostap_set_wpa(void *priv, int enabled) 1210 { 1211 struct wpa_driver_hostap_data *drv = priv; 1212 int ret = 0; 1213 1214 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); 1215 1216 if (!enabled && wpa_driver_hostap_set_wpa_ie(drv, NULL, 0) < 0) 1217 ret = -1; 1218 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, enabled ? 2 : 0) < 0) 1219 ret = -1; 1220 if (prism2param(drv, PRISM2_PARAM_WPA, enabled) < 0) 1221 ret = -1; 1222 1223 return ret; 1224 } 1225 1226 1227 static void show_set_key_error(struct prism2_hostapd_param *param) 1228 { 1229 switch (param->u.crypt.err) { 1230 case HOSTAP_CRYPT_ERR_UNKNOWN_ALG: 1231 wpa_printf(MSG_INFO, "Unknown algorithm '%s'.", 1232 param->u.crypt.alg); 1233 wpa_printf(MSG_INFO, "You may need to load kernel module to " 1234 "register that algorithm."); 1235 wpa_printf(MSG_INFO, "E.g., 'modprobe hostap_crypt_wep' for " 1236 "WEP."); 1237 break; 1238 case HOSTAP_CRYPT_ERR_UNKNOWN_ADDR: 1239 wpa_printf(MSG_INFO, "Unknown address " MACSTR ".", 1240 MAC2STR(param->sta_addr)); 1241 break; 1242 case HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED: 1243 wpa_printf(MSG_INFO, "Crypt algorithm initialization failed."); 1244 break; 1245 case HOSTAP_CRYPT_ERR_KEY_SET_FAILED: 1246 wpa_printf(MSG_INFO, "Key setting failed."); 1247 break; 1248 case HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED: 1249 wpa_printf(MSG_INFO, "TX key index setting failed."); 1250 break; 1251 case HOSTAP_CRYPT_ERR_CARD_CONF_FAILED: 1252 wpa_printf(MSG_INFO, "Card configuration failed."); 1253 break; 1254 } 1255 } 1256 1257 1258 static int wpa_driver_hostap_set_key(const char *ifname, void *priv, 1259 enum wpa_alg alg, const u8 *addr, 1260 int key_idx, int set_tx, 1261 const u8 *seq, size_t seq_len, 1262 const u8 *key, size_t key_len) 1263 { 1264 struct wpa_driver_hostap_data *drv = priv; 1265 struct prism2_hostapd_param *param; 1266 u8 *buf; 1267 size_t blen; 1268 int ret = 0; 1269 char *alg_name; 1270 1271 switch (alg) { 1272 case WPA_ALG_NONE: 1273 alg_name = "none"; 1274 break; 1275 case WPA_ALG_WEP: 1276 alg_name = "WEP"; 1277 break; 1278 case WPA_ALG_TKIP: 1279 alg_name = "TKIP"; 1280 break; 1281 case WPA_ALG_CCMP: 1282 alg_name = "CCMP"; 1283 break; 1284 default: 1285 return -1; 1286 } 1287 1288 wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu " 1289 "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx, 1290 (unsigned long) seq_len, (unsigned long) key_len); 1291 1292 if (seq_len > 8) 1293 return -2; 1294 1295 blen = sizeof(*param) + key_len; 1296 buf = os_zalloc(blen); 1297 if (buf == NULL) 1298 return -1; 1299 1300 param = (struct prism2_hostapd_param *) buf; 1301 param->cmd = PRISM2_SET_ENCRYPTION; 1302 /* TODO: In theory, STA in client mode can use five keys; four default 1303 * keys for receiving (with keyidx 0..3) and one individual key for 1304 * both transmitting and receiving (keyidx 0) _unicast_ packets. Now, 1305 * keyidx 0 is reserved for this unicast use and default keys can only 1306 * use keyidx 1..3 (i.e., default key with keyidx 0 is not supported). 1307 * This should be fine for more or less all cases, but for completeness 1308 * sake, the driver could be enhanced to support the missing key. */ 1309 #if 0 1310 if (addr == NULL) 1311 os_memset(param->sta_addr, 0xff, ETH_ALEN); 1312 else 1313 os_memcpy(param->sta_addr, addr, ETH_ALEN); 1314 #else 1315 os_memset(param->sta_addr, 0xff, ETH_ALEN); 1316 #endif 1317 os_strlcpy((char *) param->u.crypt.alg, alg_name, 1318 HOSTAP_CRYPT_ALG_NAME_LEN); 1319 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0; 1320 param->u.crypt.idx = key_idx; 1321 if (seq) 1322 os_memcpy(param->u.crypt.seq, seq, seq_len); 1323 param->u.crypt.key_len = key_len; 1324 os_memcpy((u8 *) (param + 1), key, key_len); 1325 1326 if (hostapd_ioctl(drv, param, blen, 1)) { 1327 wpa_printf(MSG_WARNING, "Failed to set encryption."); 1328 show_set_key_error(param); 1329 ret = -1; 1330 } 1331 os_free(buf); 1332 1333 return ret; 1334 } 1335 1336 1337 static int wpa_driver_hostap_set_countermeasures(void *priv, int enabled) 1338 { 1339 struct wpa_driver_hostap_data *drv = priv; 1340 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); 1341 return prism2param(drv, PRISM2_PARAM_TKIP_COUNTERMEASURES, enabled); 1342 } 1343 1344 1345 static int wpa_driver_hostap_reset(struct wpa_driver_hostap_data *drv, 1346 int type) 1347 { 1348 struct iwreq iwr; 1349 int *i, ret = 0; 1350 1351 wpa_printf(MSG_DEBUG, "%s: type=%d", __FUNCTION__, type); 1352 1353 os_memset(&iwr, 0, sizeof(iwr)); 1354 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); 1355 i = (int *) iwr.u.name; 1356 *i++ = type; 1357 1358 if (ioctl(drv->sock, PRISM2_IOCTL_RESET, &iwr) < 0) { 1359 perror("ioctl[PRISM2_IOCTL_RESET]"); 1360 ret = -1; 1361 } 1362 return ret; 1363 } 1364 1365 1366 static int wpa_driver_hostap_mlme(struct wpa_driver_hostap_data *drv, 1367 const u8 *addr, int cmd, int reason_code) 1368 { 1369 struct prism2_hostapd_param param; 1370 int ret; 1371 1372 /* There does not seem to be a better way of deauthenticating or 1373 * disassociating with Prism2/2.5/3 than sending the management frame 1374 * and then resetting the Port0 to make sure both the AP and the STA 1375 * end up in disconnected state. */ 1376 os_memset(¶m, 0, sizeof(param)); 1377 param.cmd = PRISM2_HOSTAPD_MLME; 1378 os_memcpy(param.sta_addr, addr, ETH_ALEN); 1379 param.u.mlme.cmd = cmd; 1380 param.u.mlme.reason_code = reason_code; 1381 ret = hostapd_ioctl(drv, ¶m, sizeof(param), 1); 1382 if (ret == 0) { 1383 os_sleep(0, 100000); 1384 ret = wpa_driver_hostap_reset(drv, 2); 1385 } 1386 return ret; 1387 } 1388 1389 1390 static int wpa_driver_hostap_deauthenticate(void *priv, const u8 *addr, 1391 int reason_code) 1392 { 1393 struct wpa_driver_hostap_data *drv = priv; 1394 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1395 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DEAUTH, 1396 reason_code); 1397 } 1398 1399 1400 static int wpa_driver_hostap_disassociate(void *priv, const u8 *addr, 1401 int reason_code) 1402 { 1403 struct wpa_driver_hostap_data *drv = priv; 1404 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1405 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DISASSOC, 1406 reason_code); 1407 } 1408 1409 1410 static int 1411 wpa_driver_hostap_associate(void *priv, 1412 struct wpa_driver_associate_params *params) 1413 { 1414 struct wpa_driver_hostap_data *drv = priv; 1415 int ret = 0; 1416 int allow_unencrypted_eapol; 1417 1418 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); 1419 1420 if (prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED, 1421 params->drop_unencrypted) < 0) 1422 ret = -1; 1423 if (wpa_driver_hostap_set_auth_alg(drv, params->auth_alg) < 0) 1424 ret = -1; 1425 if (params->mode != drv->current_mode) { 1426 /* At the moment, Host AP driver requires host_roaming=2 for 1427 * infrastructure mode and host_roaming=0 for adhoc. */ 1428 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, 1429 params->mode == IEEE80211_MODE_IBSS ? 0 : 2) < 1430 0) { 1431 wpa_printf(MSG_DEBUG, "%s: failed to set host_roaming", 1432 __func__); 1433 } 1434 drv->current_mode = params->mode; 1435 } 1436 1437 if (prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED, 1438 params->key_mgmt_suite != KEY_MGMT_NONE) < 0) 1439 ret = -1; 1440 if (wpa_driver_hostap_set_wpa_ie(drv, params->wpa_ie, 1441 params->wpa_ie_len) < 0) 1442 ret = -1; 1443 if (wpa_driver_wext_set_mode(drv->wext, params->mode) < 0) 1444 ret = -1; 1445 if (params->freq && 1446 wpa_driver_wext_set_freq(drv->wext, params->freq) < 0) 1447 ret = -1; 1448 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len) 1449 < 0) 1450 ret = -1; 1451 if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0) 1452 ret = -1; 1453 1454 /* Allow unencrypted EAPOL messages even if pairwise keys are set when 1455 * not using WPA. IEEE 802.1X specifies that these frames are not 1456 * encrypted, but WPA encrypts them when pairwise keys are in use. */ 1457 if (params->key_mgmt_suite == KEY_MGMT_802_1X || 1458 params->key_mgmt_suite == KEY_MGMT_PSK) 1459 allow_unencrypted_eapol = 0; 1460 else 1461 allow_unencrypted_eapol = 1; 1462 1463 if (prism2param(drv, PRISM2_PARAM_IEEE_802_1X, 1464 allow_unencrypted_eapol) < 0) { 1465 wpa_printf(MSG_DEBUG, "hostap: Failed to configure " 1466 "ieee_802_1x param"); 1467 /* Ignore this error.. driver_hostap.c can also be used with 1468 * other drivers that do not support this prism2_param. */ 1469 } 1470 1471 return ret; 1472 } 1473 1474 1475 static int wpa_driver_hostap_scan(void *priv, 1476 struct wpa_driver_scan_params *params) 1477 { 1478 struct wpa_driver_hostap_data *drv = priv; 1479 struct prism2_hostapd_param param; 1480 int ret; 1481 const u8 *ssid = params->ssids[0].ssid; 1482 size_t ssid_len = params->ssids[0].ssid_len; 1483 1484 if (ssid == NULL) { 1485 /* Use standard Linux Wireless Extensions ioctl if possible 1486 * because some drivers using hostap code in wpa_supplicant 1487 * might not support Host AP specific scan request (with SSID 1488 * info). */ 1489 return wpa_driver_wext_scan(drv->wext, params); 1490 } 1491 1492 if (ssid_len > 32) 1493 ssid_len = 32; 1494 1495 os_memset(¶m, 0, sizeof(param)); 1496 param.cmd = PRISM2_HOSTAPD_SCAN_REQ; 1497 param.u.scan_req.ssid_len = ssid_len; 1498 os_memcpy(param.u.scan_req.ssid, ssid, ssid_len); 1499 ret = hostapd_ioctl(drv, ¶m, sizeof(param), 1); 1500 1501 /* Not all drivers generate "scan completed" wireless event, so try to 1502 * read results after a timeout. */ 1503 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext, 1504 drv->ctx); 1505 eloop_register_timeout(3, 0, wpa_driver_wext_scan_timeout, drv->wext, 1506 drv->ctx); 1507 1508 return ret; 1509 } 1510 1511 1512 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg) 1513 { 1514 struct wpa_driver_hostap_data *drv = priv; 1515 int algs = 0; 1516 1517 if (auth_alg & WPA_AUTH_ALG_OPEN) 1518 algs |= 1; 1519 if (auth_alg & WPA_AUTH_ALG_SHARED) 1520 algs |= 2; 1521 if (auth_alg & WPA_AUTH_ALG_LEAP) 1522 algs |= 4; 1523 if (algs == 0) 1524 algs = 1; /* at least one algorithm should be set */ 1525 1526 return prism2param(drv, PRISM2_PARAM_AP_AUTH_ALGS, algs); 1527 } 1528 1529 1530 static int wpa_driver_hostap_get_bssid(void *priv, u8 *bssid) 1531 { 1532 struct wpa_driver_hostap_data *drv = priv; 1533 return wpa_driver_wext_get_bssid(drv->wext, bssid); 1534 } 1535 1536 1537 static int wpa_driver_hostap_get_ssid(void *priv, u8 *ssid) 1538 { 1539 struct wpa_driver_hostap_data *drv = priv; 1540 return wpa_driver_wext_get_ssid(drv->wext, ssid); 1541 } 1542 1543 1544 static struct wpa_scan_results * wpa_driver_hostap_get_scan_results(void *priv) 1545 { 1546 struct wpa_driver_hostap_data *drv = priv; 1547 return wpa_driver_wext_get_scan_results(drv->wext); 1548 } 1549 1550 1551 static int wpa_driver_hostap_set_operstate(void *priv, int state) 1552 { 1553 struct wpa_driver_hostap_data *drv = priv; 1554 return wpa_driver_wext_set_operstate(drv->wext, state); 1555 } 1556 1557 1558 static void * wpa_driver_hostap_init(void *ctx, const char *ifname) 1559 { 1560 struct wpa_driver_hostap_data *drv; 1561 1562 drv = os_zalloc(sizeof(*drv)); 1563 if (drv == NULL) 1564 return NULL; 1565 drv->wext = wpa_driver_wext_init(ctx, ifname); 1566 if (drv->wext == NULL) { 1567 os_free(drv); 1568 return NULL; 1569 } 1570 1571 drv->ctx = ctx; 1572 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); 1573 drv->sock = socket(PF_INET, SOCK_DGRAM, 0); 1574 if (drv->sock < 0) { 1575 perror("socket"); 1576 wpa_driver_wext_deinit(drv->wext); 1577 os_free(drv); 1578 return NULL; 1579 } 1580 1581 if (os_strncmp(ifname, "wlan", 4) == 0) { 1582 /* 1583 * Host AP driver may use both wlan# and wifi# interface in 1584 * wireless events. 1585 */ 1586 char ifname2[IFNAMSIZ + 1]; 1587 os_strlcpy(ifname2, ifname, sizeof(ifname2)); 1588 os_memcpy(ifname2, "wifi", 4); 1589 wpa_driver_wext_alternative_ifindex(drv->wext, ifname2); 1590 } 1591 1592 wpa_driver_hostap_set_wpa(drv, 1); 1593 1594 return drv; 1595 } 1596 1597 1598 static void wpa_driver_hostap_deinit(void *priv) 1599 { 1600 struct wpa_driver_hostap_data *drv = priv; 1601 wpa_driver_hostap_set_wpa(drv, 0); 1602 wpa_driver_wext_deinit(drv->wext); 1603 close(drv->sock); 1604 os_free(drv); 1605 } 1606 1607 #endif /* HOSTAPD */ 1608 1609 1610 const struct wpa_driver_ops wpa_driver_hostap_ops = { 1611 .name = "hostap", 1612 .desc = "Host AP driver (Intersil Prism2/2.5/3)", 1613 .set_key = wpa_driver_hostap_set_key, 1614 #ifdef HOSTAPD 1615 .hapd_init = hostap_init, 1616 .hapd_deinit = hostap_driver_deinit, 1617 .set_ieee8021x = hostap_set_ieee8021x, 1618 .set_privacy = hostap_set_privacy, 1619 .get_seqnum = hostap_get_seqnum, 1620 .flush = hostap_flush, 1621 .set_generic_elem = hostap_set_generic_elem, 1622 .read_sta_data = hostap_read_sta_data, 1623 .hapd_send_eapol = hostap_send_eapol, 1624 .sta_set_flags = hostap_sta_set_flags, 1625 .sta_deauth = hostap_sta_deauth, 1626 .sta_disassoc = hostap_sta_disassoc, 1627 .sta_remove = hostap_sta_remove, 1628 .hapd_set_ssid = hostap_set_ssid, 1629 .send_mlme = hostap_send_mlme, 1630 .sta_add = hostap_sta_add, 1631 .get_inact_sec = hostap_get_inact_sec, 1632 .sta_clear_stats = hostap_sta_clear_stats, 1633 .get_hw_feature_data = hostap_get_hw_feature_data, 1634 .set_ap_wps_ie = hostap_set_ap_wps_ie, 1635 #else /* HOSTAPD */ 1636 .get_bssid = wpa_driver_hostap_get_bssid, 1637 .get_ssid = wpa_driver_hostap_get_ssid, 1638 .set_countermeasures = wpa_driver_hostap_set_countermeasures, 1639 .scan2 = wpa_driver_hostap_scan, 1640 .get_scan_results2 = wpa_driver_hostap_get_scan_results, 1641 .deauthenticate = wpa_driver_hostap_deauthenticate, 1642 .disassociate = wpa_driver_hostap_disassociate, 1643 .associate = wpa_driver_hostap_associate, 1644 .init = wpa_driver_hostap_init, 1645 .deinit = wpa_driver_hostap_deinit, 1646 .set_operstate = wpa_driver_hostap_set_operstate, 1647 #endif /* HOSTAPD */ 1648 }; 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