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