contrib/hostapd/src/drivers/driver_wext.c

   1 /*
   2  * WPA Supplicant - driver interaction with generic Linux Wireless Extensions
   3  * Copyright (c) 2003-2007, 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  * This file implements a driver interface for the Linux Wireless Extensions.
  15  * When used with WE-18 or newer, this interface can be used as-is with number
  16  * of drivers. In addition to this, some of the common functions in this file
  17  * can be used by other driver interface implementations that use generic WE
  18  * ioctls, but require private ioctls for some of the functionality.
  19  */
  20
  21 #include "includes.h"
  22 #include <sys/ioctl.h>
  23 #include <net/if_arp.h>
  24
  25 #include "wireless_copy.h"
  26 #include "common.h"
  27 #include "driver.h"
  28 #include "eloop.h"
  29 #include "priv_netlink.h"
  30 #include "driver_wext.h"
  31 #include "ieee802_11_defs.h"
  32 #include "wpa_common.h"
  33
  34
  35 static int wpa_driver_wext_flush_pmkid(void *priv);
  36 static int wpa_driver_wext_get_range(void *priv);
  37 static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
  38 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv);
  39
  40
  41 static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
  42                                           int linkmode, int operstate)
  43 {
  44         struct {
  45                 struct nlmsghdr hdr;
  46                 struct ifinfomsg ifinfo;
  47                 char opts[16];
  48         } req;
  49         struct rtattr *rta;
  50         static int nl_seq;
  51         ssize_t ret;
  52
  53         os_memset(&req, 0, sizeof(req));
  54
  55         req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
  56         req.hdr.nlmsg_type = RTM_SETLINK;
  57         req.hdr.nlmsg_flags = NLM_F_REQUEST;
  58         req.hdr.nlmsg_seq = ++nl_seq;
  59         req.hdr.nlmsg_pid = 0;
  60
  61         req.ifinfo.ifi_family = AF_UNSPEC;
  62         req.ifinfo.ifi_type = 0;
  63         req.ifinfo.ifi_index = drv->ifindex;
  64         req.ifinfo.ifi_flags = 0;
  65         req.ifinfo.ifi_change = 0;
  66
  67         if (linkmode != -1) {
  68                 rta = aliasing_hide_typecast(
  69                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
  70                         struct rtattr);
  71                 rta->rta_type = IFLA_LINKMODE;
  72                 rta->rta_len = RTA_LENGTH(sizeof(char));
  73                 *((char *) RTA_DATA(rta)) = linkmode;
  74                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  75                         RTA_LENGTH(sizeof(char));
  76         }
  77         if (operstate != -1) {
  78                 rta = (struct rtattr *)
  79                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
  80                 rta->rta_type = IFLA_OPERSTATE;
  81                 rta->rta_len = RTA_LENGTH(sizeof(char));
  82                 *((char *) RTA_DATA(rta)) = operstate;
  83                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  84                         RTA_LENGTH(sizeof(char));
  85         }
  86
  87         wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
  88                    linkmode, operstate);
  89
  90         ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0);
  91         if (ret < 0) {
  92                 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
  93                            "%s (assume operstate is not supported)",
  94                            strerror(errno));
  95         }
  96
  97         return ret < 0 ? -1 : 0;
  98 }
  99
 100
 101 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
 102                                    int idx, u32 value)
 103 {
 104         struct iwreq iwr;
 105         int ret = 0;
 106
 107         os_memset(&iwr, 0, sizeof(iwr));
 108         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 109         iwr.u.param.flags = idx & IW_AUTH_INDEX;
 110         iwr.u.param.value = value;
 111
 112         if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
 113                 if (errno != EOPNOTSUPP) {
 114                         wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
 115                                    "value 0x%x) failed: %s)",
 116                                    idx, value, strerror(errno));
 117                 }
 118                 ret = errno == EOPNOTSUPP ? -2 : -1;
 119         }
 120
 121         return ret;
 122 }
 123
 124
 125 /**
 126  * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
 127  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 128  * @bssid: Buffer for BSSID
 129  * Returns: 0 on success, -1 on failure
 130  */
 131 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
 132 {
 133         struct wpa_driver_wext_data *drv = priv;
 134         struct iwreq iwr;
 135         int ret = 0;
 136
 137         os_memset(&iwr, 0, sizeof(iwr));
 138         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 139
 140         if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
 141                 perror("ioctl[SIOCGIWAP]");
 142                 ret = -1;
 143         }
 144         os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
 145
 146         return ret;
 147 }
 148
 149
 150 /**
 151  * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
 152  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 153  * @bssid: BSSID
 154  * Returns: 0 on success, -1 on failure
 155  */
 156 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
 157 {
 158         struct wpa_driver_wext_data *drv = priv;
 159         struct iwreq iwr;
 160         int ret = 0;
 161
 162         os_memset(&iwr, 0, sizeof(iwr));
 163         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 164         iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
 165         if (bssid)
 166                 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
 167         else
 168                 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
 169
 170         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
 171                 perror("ioctl[SIOCSIWAP]");
 172                 ret = -1;
 173         }
 174
 175         return ret;
 176 }
 177
 178
 179 /**
 180  * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
 181  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 182  * @ssid: Buffer for the SSID; must be at least 32 bytes long
 183  * Returns: SSID length on success, -1 on failure
 184  */
 185 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
 186 {
 187         struct wpa_driver_wext_data *drv = priv;
 188         struct iwreq iwr;
 189         int ret = 0;
 190
 191         os_memset(&iwr, 0, sizeof(iwr));
 192         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 193         iwr.u.essid.pointer = (caddr_t) ssid;
 194         iwr.u.essid.length = 32;
 195
 196         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
 197                 perror("ioctl[SIOCGIWESSID]");
 198                 ret = -1;
 199         } else {
 200                 ret = iwr.u.essid.length;
 201                 if (ret > 32)
 202                         ret = 32;
 203                 /* Some drivers include nul termination in the SSID, so let's
 204                  * remove it here before further processing. WE-21 changes this
 205                  * to explicitly require the length _not_ to include nul
 206                  * termination. */
 207                 if (ret > 0 && ssid[ret - 1] == '\0' &&
 208                     drv->we_version_compiled < 21)
 209                         ret--;
 210         }
 211
 212         return ret;
 213 }
 214
 215
 216 /**
 217  * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
 218  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 219  * @ssid: SSID
 220  * @ssid_len: Length of SSID (0..32)
 221  * Returns: 0 on success, -1 on failure
 222  */
 223 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
 224 {
 225         struct wpa_driver_wext_data *drv = priv;
 226         struct iwreq iwr;
 227         int ret = 0;
 228         char buf[33];
 229
 230         if (ssid_len > 32)
 231                 return -1;
 232
 233         os_memset(&iwr, 0, sizeof(iwr));
 234         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 235         /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
 236         iwr.u.essid.flags = (ssid_len != 0);
 237         os_memset(buf, 0, sizeof(buf));
 238         os_memcpy(buf, ssid, ssid_len);
 239         iwr.u.essid.pointer = (caddr_t) buf;
 240         if (drv->we_version_compiled < 21) {
 241                 /* For historic reasons, set SSID length to include one extra
 242                  * character, C string nul termination, even though SSID is
 243                  * really an octet string that should not be presented as a C
 244                  * string. Some Linux drivers decrement the length by one and
 245                  * can thus end up missing the last octet of the SSID if the
 246                  * length is not incremented here. WE-21 changes this to
 247                  * explicitly require the length _not_ to include nul
 248                  * termination. */
 249                 if (ssid_len)
 250                         ssid_len++;
 251         }
 252         iwr.u.essid.length = ssid_len;
 253
 254         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
 255                 perror("ioctl[SIOCSIWESSID]");
 256                 ret = -1;
 257         }
 258
 259         return ret;
 260 }
 261
 262
 263 /**
 264  * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
 265  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 266  * @freq: Frequency in MHz
 267  * Returns: 0 on success, -1 on failure
 268  */
 269 int wpa_driver_wext_set_freq(void *priv, int freq)
 270 {
 271         struct wpa_driver_wext_data *drv = priv;
 272         struct iwreq iwr;
 273         int ret = 0;
 274
 275         os_memset(&iwr, 0, sizeof(iwr));
 276         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 277         iwr.u.freq.m = freq * 100000;
 278         iwr.u.freq.e = 1;
 279
 280         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 281                 perror("ioctl[SIOCSIWFREQ]");
 282                 ret = -1;
 283         }
 284
 285         return ret;
 286 }
 287
 288
 289 static void
 290 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
 291 {
 292         union wpa_event_data data;
 293
 294         wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
 295                    custom);
 296
 297         os_memset(&data, 0, sizeof(data));
 298         /* Host AP driver */
 299         if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 300                 data.michael_mic_failure.unicast =
 301                         os_strstr(custom, " unicast ") != NULL;
 302                 /* TODO: parse parameters(?) */
 303                 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 304         } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
 305                 char *spos;
 306                 int bytes;
 307
 308                 spos = custom + 17;
 309
 310                 bytes = strspn(spos, "0123456789abcdefABCDEF");
 311                 if (!bytes || (bytes & 1))
 312                         return;
 313                 bytes /= 2;
 314
 315                 data.assoc_info.req_ies = os_malloc(bytes);
 316                 if (data.assoc_info.req_ies == NULL)
 317                         return;
 318
 319                 data.assoc_info.req_ies_len = bytes;
 320                 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
 321
 322                 spos += bytes * 2;
 323
 324                 data.assoc_info.resp_ies = NULL;
 325                 data.assoc_info.resp_ies_len = 0;
 326
 327                 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
 328                         spos += 9;
 329
 330                         bytes = strspn(spos, "0123456789abcdefABCDEF");
 331                         if (!bytes || (bytes & 1))
 332                                 goto done;
 333                         bytes /= 2;
 334
 335                         data.assoc_info.resp_ies = os_malloc(bytes);
 336                         if (data.assoc_info.resp_ies == NULL)
 337                                 goto done;
 338
 339                         data.assoc_info.resp_ies_len = bytes;
 340                         hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
 341                 }
 342
 343                 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
 344
 345         done:
 346                 os_free(data.assoc_info.resp_ies);
 347                 os_free(data.assoc_info.req_ies);
 348 #ifdef CONFIG_PEERKEY
 349         } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
 350                 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
 351                         wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
 352                                    "STKSTART.request '%s'", custom + 17);
 353                         return;
 354                 }
 355                 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 356 #endif /* CONFIG_PEERKEY */
 357         }
 358 }
 359
 360
 361 static int wpa_driver_wext_event_wireless_michaelmicfailure(
 362         void *ctx, const char *ev, size_t len)
 363 {
 364         const struct iw_michaelmicfailure *mic;
 365         union wpa_event_data data;
 366
 367         if (len < sizeof(*mic))
 368                 return -1;
 369
 370         mic = (const struct iw_michaelmicfailure *) ev;
 371
 372         wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
 373                    "flags=0x%x src_addr=" MACSTR, mic->flags,
 374                    MAC2STR(mic->src_addr.sa_data));
 375
 376         os_memset(&data, 0, sizeof(data));
 377         data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
 378         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 379
 380         return 0;
 381 }
 382
 383
 384 static int wpa_driver_wext_event_wireless_pmkidcand(
 385         struct wpa_driver_wext_data *drv, const char *ev, size_t len)
 386 {
 387         const struct iw_pmkid_cand *cand;
 388         union wpa_event_data data;
 389         const u8 *addr;
 390
 391         if (len < sizeof(*cand))
 392                 return -1;
 393
 394         cand = (const struct iw_pmkid_cand *) ev;
 395         addr = (const u8 *) cand->bssid.sa_data;
 396
 397         wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
 398                    "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
 399                    cand->index, MAC2STR(addr));
 400
 401         os_memset(&data, 0, sizeof(data));
 402         os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
 403         data.pmkid_candidate.index = cand->index;
 404         data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
 405         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
 406
 407         return 0;
 408 }
 409
 410
 411 static int wpa_driver_wext_event_wireless_assocreqie(
 412         struct wpa_driver_wext_data *drv, const char *ev, int len)
 413 {
 414         if (len < 0)
 415                 return -1;
 416
 417         wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
 418                     len);
 419         os_free(drv->assoc_req_ies);
 420         drv->assoc_req_ies = os_malloc(len);
 421         if (drv->assoc_req_ies == NULL) {
 422                 drv->assoc_req_ies_len = 0;
 423                 return -1;
 424         }
 425         os_memcpy(drv->assoc_req_ies, ev, len);
 426         drv->assoc_req_ies_len = len;
 427
 428         return 0;
 429 }
 430
 431
 432 static int wpa_driver_wext_event_wireless_assocrespie(
 433         struct wpa_driver_wext_data *drv, const char *ev, int len)
 434 {
 435         if (len < 0)
 436                 return -1;
 437
 438         wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
 439                     len);
 440         os_free(drv->assoc_resp_ies);
 441         drv->assoc_resp_ies = os_malloc(len);
 442         if (drv->assoc_resp_ies == NULL) {
 443                 drv->assoc_resp_ies_len = 0;
 444                 return -1;
 445         }
 446         os_memcpy(drv->assoc_resp_ies, ev, len);
 447         drv->assoc_resp_ies_len = len;
 448
 449         return 0;
 450 }
 451
 452
 453 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
 454 {
 455         union wpa_event_data data;
 456
 457         if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
 458                 return;
 459
 460         os_memset(&data, 0, sizeof(data));
 461         if (drv->assoc_req_ies) {
 462                 data.assoc_info.req_ies = drv->assoc_req_ies;
 463                 drv->assoc_req_ies = NULL;
 464                 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
 465         }
 466         if (drv->assoc_resp_ies) {
 467                 data.assoc_info.resp_ies = drv->assoc_resp_ies;
 468                 drv->assoc_resp_ies = NULL;
 469                 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
 470         }
 471
 472         wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
 473
 474         os_free(data.assoc_info.req_ies);
 475         os_free(data.assoc_info.resp_ies);
 476 }
 477
 478
 479 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
 480                                            void *ctx, char *data, int len)
 481 {
 482         struct iw_event iwe_buf, *iwe = &iwe_buf;
 483         char *pos, *end, *custom, *buf;
 484
 485         pos = data;
 486         end = data + len;
 487
 488         while (pos + IW_EV_LCP_LEN <= end) {
 489                 /* Event data may be unaligned, so make a local, aligned copy
 490                  * before processing. */
 491                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 492                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
 493                            iwe->cmd, iwe->len);
 494                 if (iwe->len <= IW_EV_LCP_LEN)
 495                         return;
 496
 497                 custom = pos + IW_EV_POINT_LEN;
 498                 if (drv->we_version_compiled > 18 &&
 499                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 500                      iwe->cmd == IWEVCUSTOM ||
 501                      iwe->cmd == IWEVASSOCREQIE ||
 502                      iwe->cmd == IWEVASSOCRESPIE ||
 503                      iwe->cmd == IWEVPMKIDCAND)) {
 504                         /* WE-19 removed the pointer from struct iw_point */
 505                         char *dpos = (char *) &iwe_buf.u.data.length;
 506                         int dlen = dpos - (char *) &iwe_buf;
 507                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
 508                                   sizeof(struct iw_event) - dlen);
 509                 } else {
 510                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 511                         custom += IW_EV_POINT_OFF;
 512                 }
 513
 514                 switch (iwe->cmd) {
 515                 case SIOCGIWAP:
 516                         wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
 517                                    MACSTR,
 518                                    MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
 519                         if (is_zero_ether_addr(
 520                                     (const u8 *) iwe->u.ap_addr.sa_data) ||
 521                             os_memcmp(iwe->u.ap_addr.sa_data,
 522                                       "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
 523                             0) {
 524                                 os_free(drv->assoc_req_ies);
 525                                 drv->assoc_req_ies = NULL;
 526                                 os_free(drv->assoc_resp_ies);
 527                                 drv->assoc_resp_ies = NULL;
 528                                 wpa_supplicant_event(ctx, EVENT_DISASSOC,
 529                                                      NULL);
 530
 531                         } else {
 532                                 wpa_driver_wext_event_assoc_ies(drv);
 533                                 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
 534                         }
 535                         break;
 536                 case IWEVMICHAELMICFAILURE:
 537                         if (custom + iwe->u.data.length > end) {
 538                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 539                                            "IWEVMICHAELMICFAILURE length");
 540                                 return;
 541                         }
 542                         wpa_driver_wext_event_wireless_michaelmicfailure(
 543                                 ctx, custom, iwe->u.data.length);
 544                         break;
 545                 case IWEVCUSTOM:
 546                         if (custom + iwe->u.data.length > end) {
 547                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 548                                            "IWEVCUSTOM length");
 549                                 return;
 550                         }
 551                         buf = os_malloc(iwe->u.data.length + 1);
 552                         if (buf == NULL)
 553                                 return;
 554                         os_memcpy(buf, custom, iwe->u.data.length);
 555                         buf[iwe->u.data.length] = '\0';
 556                         wpa_driver_wext_event_wireless_custom(ctx, buf);
 557                         os_free(buf);
 558                         break;
 559                 case SIOCGIWSCAN:
 560                         drv->scan_complete_events = 1;
 561                         eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
 562                                              drv, ctx);
 563                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
 564                         break;
 565                 case IWEVASSOCREQIE:
 566                         if (custom + iwe->u.data.length > end) {
 567                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 568                                            "IWEVASSOCREQIE length");
 569                                 return;
 570                         }
 571                         wpa_driver_wext_event_wireless_assocreqie(
 572                                 drv, custom, iwe->u.data.length);
 573                         break;
 574                 case IWEVASSOCRESPIE:
 575                         if (custom + iwe->u.data.length > end) {
 576                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 577                                            "IWEVASSOCRESPIE length");
 578                                 return;
 579                         }
 580                         wpa_driver_wext_event_wireless_assocrespie(
 581                                 drv, custom, iwe->u.data.length);
 582                         break;
 583                 case IWEVPMKIDCAND:
 584                         if (custom + iwe->u.data.length > end) {
 585                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 586                                            "IWEVPMKIDCAND length");
 587                                 return;
 588                         }
 589                         wpa_driver_wext_event_wireless_pmkidcand(
 590                                 drv, custom, iwe->u.data.length);
 591                         break;
 592                 }
 593
 594                 pos += iwe->len;
 595         }
 596 }
 597
 598
 599 static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
 600                                        void *ctx, char *buf, size_t len,
 601                                        int del)
 602 {
 603         union wpa_event_data event;
 604
 605         os_memset(&event, 0, sizeof(event));
 606         if (len > sizeof(event.interface_status.ifname))
 607                 len = sizeof(event.interface_status.ifname) - 1;
 608         os_memcpy(event.interface_status.ifname, buf, len);
 609         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 610                 EVENT_INTERFACE_ADDED;
 611
 612         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 613                    del ? "DEL" : "NEW",
 614                    event.interface_status.ifname,
 615                    del ? "removed" : "added");
 616
 617         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 618                 if (del)
 619                         drv->if_removed = 1;
 620                 else
 621                         drv->if_removed = 0;
 622         }
 623
 624         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
 625 }
 626
 627
 628 static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
 629                                       struct nlmsghdr *h)
 630 {
 631         struct ifinfomsg *ifi;
 632         int attrlen, nlmsg_len, rta_len;
 633         struct rtattr *attr;
 634
 635         ifi = NLMSG_DATA(h);
 636
 637         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 638
 639         attrlen = h->nlmsg_len - nlmsg_len;
 640         if (attrlen < 0)
 641                 return 0;
 642
 643         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 644
 645         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 646         while (RTA_OK(attr, attrlen)) {
 647                 if (attr->rta_type == IFLA_IFNAME) {
 648                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 649                             == 0)
 650                                 return 1;
 651                         else
 652                                 break;
 653                 }
 654                 attr = RTA_NEXT(attr, attrlen);
 655         }
 656
 657         return 0;
 658 }
 659
 660
 661 static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
 662                                        int ifindex, struct nlmsghdr *h)
 663 {
 664         if (drv->ifindex == ifindex || drv->ifindex2 == ifindex)
 665                 return 1;
 666
 667         if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
 668                 drv->ifindex = if_nametoindex(drv->ifname);
 669                 wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
 670                            "interface");
 671                 wpa_driver_wext_finish_drv_init(drv);
 672                 return 1;
 673         }
 674
 675         return 0;
 676 }
 677
 678
 679 static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
 680                                               void *ctx, struct nlmsghdr *h,
 681                                               size_t len)
 682 {
 683         struct ifinfomsg *ifi;
 684         int attrlen, nlmsg_len, rta_len;
 685         struct rtattr * attr;
 686
 687         if (len < sizeof(*ifi))
 688                 return;
 689
 690         ifi = NLMSG_DATA(h);
 691
 692         if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
 693                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 694                            ifi->ifi_index);
 695                 return;
 696         }
 697
 698         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 699                    "(%s%s%s%s)",
 700                    drv->operstate, ifi->ifi_flags,
 701                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 702                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 703                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 704                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 705         /*
 706          * Some drivers send the association event before the operup event--in
 707          * this case, lifting operstate in wpa_driver_wext_set_operstate()
 708          * fails. This will hit us when wpa_supplicant does not need to do
 709          * IEEE 802.1X authentication
 710          */
 711         if (drv->operstate == 1 &&
 712             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 713             !(ifi->ifi_flags & IFF_RUNNING))
 714                 wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
 715
 716         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 717
 718         attrlen = h->nlmsg_len - nlmsg_len;
 719         if (attrlen < 0)
 720                 return;
 721
 722         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 723
 724         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 725         while (RTA_OK(attr, attrlen)) {
 726                 if (attr->rta_type == IFLA_WIRELESS) {
 727                         wpa_driver_wext_event_wireless(
 728                                 drv, ctx, ((char *) attr) + rta_len,
 729                                 attr->rta_len - rta_len);
 730                 } else if (attr->rta_type == IFLA_IFNAME) {
 731                         wpa_driver_wext_event_link(drv, ctx,
 732                                                    ((char *) attr) + rta_len,
 733                                                    attr->rta_len - rta_len, 0);
 734                 }
 735                 attr = RTA_NEXT(attr, attrlen);
 736         }
 737 }
 738
 739
 740 static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
 741                                               void *ctx, struct nlmsghdr *h,
 742                                               size_t len)
 743 {
 744         struct ifinfomsg *ifi;
 745         int attrlen, nlmsg_len, rta_len;
 746         struct rtattr * attr;
 747
 748         if (len < sizeof(*ifi))
 749                 return;
 750
 751         ifi = NLMSG_DATA(h);
 752
 753         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 754
 755         attrlen = h->nlmsg_len - nlmsg_len;
 756         if (attrlen < 0)
 757                 return;
 758
 759         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 760
 761         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 762         while (RTA_OK(attr, attrlen)) {
 763                 if (attr->rta_type == IFLA_IFNAME) {
 764                         wpa_driver_wext_event_link(drv,  ctx,
 765                                                    ((char *) attr) + rta_len,
 766                                                    attr->rta_len - rta_len, 1);
 767                 }
 768                 attr = RTA_NEXT(attr, attrlen);
 769         }
 770 }
 771
 772
 773 static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
 774                                           void *sock_ctx)
 775 {
 776         char buf[8192];
 777         int left;
 778         struct sockaddr_nl from;
 779         socklen_t fromlen;
 780         struct nlmsghdr *h;
 781         int max_events = 10;
 782
 783 try_again:
 784         fromlen = sizeof(from);
 785         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
 786                         (struct sockaddr *) &from, &fromlen);
 787         if (left < 0) {
 788                 if (errno != EINTR && errno != EAGAIN)
 789                         perror("recvfrom(netlink)");
 790                 return;
 791         }
 792
 793         h = (struct nlmsghdr *) buf;
 794         while (left >= (int) sizeof(*h)) {
 795                 int len, plen;
 796
 797                 len = h->nlmsg_len;
 798                 plen = len - sizeof(*h);
 799                 if (len > left || plen < 0) {
 800                         wpa_printf(MSG_DEBUG, "Malformed netlink message: "
 801                                    "len=%d left=%d plen=%d",
 802                                    len, left, plen);
 803                         break;
 804                 }
 805
 806                 switch (h->nlmsg_type) {
 807                 case RTM_NEWLINK:
 808                         wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
 809                                                           h, plen);
 810                         break;
 811                 case RTM_DELLINK:
 812                         wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
 813                                                           h, plen);
 814                         break;
 815                 }
 816
 817                 len = NLMSG_ALIGN(len);
 818                 left -= len;
 819                 h = (struct nlmsghdr *) ((char *) h + len);
 820         }
 821
 822         if (left > 0) {
 823                 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
 824                            "message", left);
 825         }
 826
 827         if (--max_events > 0) {
 828                 /*
 829                  * Try to receive all events in one eloop call in order to
 830                  * limit race condition on cases where AssocInfo event, Assoc
 831                  * event, and EAPOL frames are received more or less at the
 832                  * same time. We want to process the event messages first
 833                  * before starting EAPOL processing.
 834                  */
 835                 goto try_again;
 836         }
 837 }
 838
 839
 840 static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
 841                                               const char *ifname, int *flags)
 842 {
 843         struct ifreq ifr;
 844
 845         os_memset(&ifr, 0, sizeof(ifr));
 846         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 847         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
 848                 perror("ioctl[SIOCGIFFLAGS]");
 849                 return -1;
 850         }
 851         *flags = ifr.ifr_flags & 0xffff;
 852         return 0;
 853 }
 854
 855
 856 /**
 857  * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS)
 858  * @drv: driver_wext private data
 859  * @flags: Pointer to returned flags value
 860  * Returns: 0 on success, -1 on failure
 861  */
 862 int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags)
 863 {
 864         return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags);
 865 }
 866
 867
 868 static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv,
 869                                               const char *ifname, int flags)
 870 {
 871         struct ifreq ifr;
 872
 873         os_memset(&ifr, 0, sizeof(ifr));
 874         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 875         ifr.ifr_flags = flags & 0xffff;
 876         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
 877                 perror("SIOCSIFFLAGS");
 878                 return -1;
 879         }
 880         return 0;
 881 }
 882
 883
 884 /**
 885  * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS)
 886  * @drv: driver_wext private data
 887  * @flags: New value for flags
 888  * Returns: 0 on success, -1 on failure
 889  */
 890 int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags)
 891 {
 892         return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags);
 893 }
 894
 895
 896 /**
 897  * wpa_driver_wext_init - Initialize WE driver interface
 898  * @ctx: context to be used when calling wpa_supplicant functions,
 899  * e.g., wpa_supplicant_event()
 900  * @ifname: interface name, e.g., wlan0
 901  * Returns: Pointer to private data, %NULL on failure
 902  */
 903 void * wpa_driver_wext_init(void *ctx, const char *ifname)
 904 {
 905         int s;
 906         struct sockaddr_nl local;
 907         struct wpa_driver_wext_data *drv;
 908
 909         drv = os_zalloc(sizeof(*drv));
 910         if (drv == NULL)
 911                 return NULL;
 912         drv->ctx = ctx;
 913         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 914
 915         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 916         if (drv->ioctl_sock < 0) {
 917                 perror("socket(PF_INET,SOCK_DGRAM)");
 918                 os_free(drv);
 919                 return NULL;
 920         }
 921
 922         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
 923         if (s < 0) {
 924                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
 925                 close(drv->ioctl_sock);
 926                 os_free(drv);
 927                 return NULL;
 928         }
 929
 930         os_memset(&local, 0, sizeof(local));
 931         local.nl_family = AF_NETLINK;
 932         local.nl_groups = RTMGRP_LINK;
 933         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
 934                 perror("bind(netlink)");
 935                 close(s);
 936                 close(drv->ioctl_sock);
 937                 os_free(drv);
 938                 return NULL;
 939         }
 940
 941         eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
 942         drv->event_sock = s;
 943
 944         drv->mlme_sock = -1;
 945
 946         wpa_driver_wext_finish_drv_init(drv);
 947
 948         return drv;
 949 }
 950
 951
 952 static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
 953 {
 954         int flags;
 955
 956         if (wpa_driver_wext_get_ifflags(drv, &flags) != 0)
 957                 printf("Could not get interface '%s' flags\n", drv->ifname);
 958         else if (!(flags & IFF_UP)) {
 959                 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
 960                         printf("Could not set interface '%s' UP\n",
 961                                drv->ifname);
 962                 } else {
 963                         /*
 964                          * Wait some time to allow driver to initialize before
 965                          * starting configuring the driver. This seems to be
 966                          * needed at least some drivers that load firmware etc.
 967                          * when the interface is set up.
 968                          */
 969                         wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
 970                                    "a second for the driver to complete "
 971                                    "initialization", drv->ifname);
 972                         sleep(1);
 973                 }
 974         }
 975
 976         /*
 977          * Make sure that the driver does not have any obsolete PMKID entries.
 978          */
 979         wpa_driver_wext_flush_pmkid(drv);
 980
 981         if (wpa_driver_wext_set_mode(drv, 0) < 0) {
 982                 printf("Could not configure driver to use managed mode\n");
 983         }
 984
 985         wpa_driver_wext_get_range(drv);
 986
 987         /*
 988          * Unlock the driver's BSSID and force to a random SSID to clear any
 989          * previous association the driver might have when the supplicant
 990          * starts up.
 991          */
 992         wpa_driver_wext_disconnect(drv);
 993
 994         drv->ifindex = if_nametoindex(drv->ifname);
 995
 996         if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
 997                 /*
 998                  * Host AP driver may use both wlan# and wifi# interface in
 999                  * wireless events. Since some of the versions included WE-18
1000                  * support, let's add the alternative ifindex also from
1001                  * driver_wext.c for the time being. This may be removed at
1002                  * some point once it is believed that old versions of the
1003                  * driver are not in use anymore.
1004                  */
1005                 char ifname2[IFNAMSIZ + 1];
1006                 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
1007                 os_memcpy(ifname2, "wifi", 4);
1008                 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1009         }
1010
1011         wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1012 }
1013
1014
1015 /**
1016  * wpa_driver_wext_deinit - Deinitialize WE driver interface
1017  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1018  *
1019  * Shut down driver interface and processing of driver events. Free
1020  * private data buffer if one was allocated in wpa_driver_wext_init().
1021  */
1022 void wpa_driver_wext_deinit(void *priv)
1023 {
1024         struct wpa_driver_wext_data *drv = priv;
1025         int flags;
1026
1027         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1028
1029         /*
1030          * Clear possibly configured driver parameters in order to make it
1031          * easier to use the driver after wpa_supplicant has been terminated.
1032          */
1033         wpa_driver_wext_disconnect(drv);
1034
1035         wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1036
1037         eloop_unregister_read_sock(drv->event_sock);
1038         if (drv->mlme_sock >= 0)
1039                 eloop_unregister_read_sock(drv->mlme_sock);
1040
1041         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1042                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1043
1044         close(drv->event_sock);
1045         close(drv->ioctl_sock);
1046         if (drv->mlme_sock >= 0)
1047                 close(drv->mlme_sock);
1048         os_free(drv->assoc_req_ies);
1049         os_free(drv->assoc_resp_ies);
1050         os_free(drv);
1051 }
1052
1053
1054 /**
1055  * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1056  * @eloop_ctx: Unused
1057  * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1058  *
1059  * This function can be used as registered timeout when starting a scan to
1060  * generate a scan completed event if the driver does not report this.
1061  */
1062 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1063 {
1064         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1065         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1066 }
1067
1068
1069 /**
1070  * wpa_driver_wext_scan - Request the driver to initiate scan
1071  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1072  * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
1073  *      all SSIDs (either active scan with broadcast SSID or passive
1074  *      scan
1075  * @ssid_len: Length of the SSID
1076  * Returns: 0 on success, -1 on failure
1077  */
1078 int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len)
1079 {
1080         struct wpa_driver_wext_data *drv = priv;
1081         struct iwreq iwr;
1082         int ret = 0, timeout;
1083         struct iw_scan_req req;
1084
1085         if (ssid_len > IW_ESSID_MAX_SIZE) {
1086                 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1087                            __FUNCTION__, (unsigned long) ssid_len);
1088                 return -1;
1089         }
1090
1091         os_memset(&iwr, 0, sizeof(iwr));
1092         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1093
1094         if (ssid && ssid_len) {
1095                 os_memset(&req, 0, sizeof(req));
1096                 req.essid_len = ssid_len;
1097                 req.bssid.sa_family = ARPHRD_ETHER;
1098                 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1099                 os_memcpy(req.essid, ssid, ssid_len);
1100                 iwr.u.data.pointer = (caddr_t) &req;
1101                 iwr.u.data.length = sizeof(req);
1102                 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1103         }
1104
1105         if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1106                 perror("ioctl[SIOCSIWSCAN]");
1107                 ret = -1;
1108         }
1109
1110         /* Not all drivers generate "scan completed" wireless event, so try to
1111          * read results after a timeout. */
1112         timeout = 5;
1113         if (drv->scan_complete_events) {
1114                 /*
1115                  * The driver seems to deliver SIOCGIWSCAN events to notify
1116                  * when scan is complete, so use longer timeout to avoid race
1117                  * conditions with scanning and following association request.
1118                  */
1119                 timeout = 30;
1120         }
1121         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1122                    "seconds", ret, timeout);
1123         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1124         eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1125                                drv->ctx);
1126
1127         return ret;
1128 }
1129
1130
1131 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1132                                     size_t *len)
1133 {
1134         struct iwreq iwr;
1135         u8 *res_buf;
1136         size_t res_buf_len;
1137
1138         res_buf_len = IW_SCAN_MAX_DATA;
1139         for (;;) {
1140                 res_buf = os_malloc(res_buf_len);
1141                 if (res_buf == NULL)
1142                         return NULL;
1143                 os_memset(&iwr, 0, sizeof(iwr));
1144                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1145                 iwr.u.data.pointer = res_buf;
1146                 iwr.u.data.length = res_buf_len;
1147
1148                 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1149                         break;
1150
1151                 if (errno == E2BIG && res_buf_len < 65535) {
1152                         os_free(res_buf);
1153                         res_buf = NULL;
1154                         res_buf_len *= 2;
1155                         if (res_buf_len > 65535)
1156                                 res_buf_len = 65535; /* 16-bit length field */
1157                         wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1158                                    "trying larger buffer (%lu bytes)",
1159                                    (unsigned long) res_buf_len);
1160                 } else {
1161                         perror("ioctl[SIOCGIWSCAN]");
1162                         os_free(res_buf);
1163                         return NULL;
1164                 }
1165         }
1166
1167         if (iwr.u.data.length > res_buf_len) {
1168                 os_free(res_buf);
1169                 return NULL;
1170         }
1171         *len = iwr.u.data.length;
1172
1173         return res_buf;
1174 }
1175
1176
1177 /*
1178  * Data structure for collecting WEXT scan results. This is needed to allow
1179  * the various methods of reporting IEs to be combined into a single IE buffer.
1180  */
1181 struct wext_scan_data {
1182         struct wpa_scan_res res;
1183         u8 *ie;
1184         size_t ie_len;
1185         u8 ssid[32];
1186         size_t ssid_len;
1187         int maxrate;
1188 };
1189
1190
1191 static void wext_get_scan_mode(struct iw_event *iwe,
1192                                struct wext_scan_data *res)
1193 {
1194         if (iwe->u.mode == IW_MODE_ADHOC)
1195                 res->res.caps |= IEEE80211_CAP_IBSS;
1196         else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1197                 res->res.caps |= IEEE80211_CAP_ESS;
1198 }
1199
1200
1201 static void wext_get_scan_ssid(struct iw_event *iwe,
1202                                struct wext_scan_data *res, char *custom,
1203                                char *end)
1204 {
1205         int ssid_len = iwe->u.essid.length;
1206         if (custom + ssid_len > end)
1207                 return;
1208         if (iwe->u.essid.flags &&
1209             ssid_len > 0 &&
1210             ssid_len <= IW_ESSID_MAX_SIZE) {
1211                 os_memcpy(res->ssid, custom, ssid_len);
1212                 res->ssid_len = ssid_len;
1213         }
1214 }
1215
1216
1217 static void wext_get_scan_freq(struct iw_event *iwe,
1218                                struct wext_scan_data *res)
1219 {
1220         int divi = 1000000, i;
1221
1222         if (iwe->u.freq.e == 0) {
1223                 /*
1224                  * Some drivers do not report frequency, but a channel.
1225                  * Try to map this to frequency by assuming they are using
1226                  * IEEE 802.11b/g.  But don't overwrite a previously parsed
1227                  * frequency if the driver sends both frequency and channel,
1228                  * since the driver may be sending an A-band channel that we
1229                  * don't handle here.
1230                  */
1231
1232                 if (res->res.freq)
1233                         return;
1234
1235                 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1236                         res->res.freq = 2407 + 5 * iwe->u.freq.m;
1237                         return;
1238                 } else if (iwe->u.freq.m == 14) {
1239                         res->res.freq = 2484;
1240                         return;
1241                 }
1242         }
1243
1244         if (iwe->u.freq.e > 6) {
1245                 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1246                            MACSTR " m=%d e=%d)",
1247                            MAC2STR(res->res.bssid), iwe->u.freq.m,
1248                            iwe->u.freq.e);
1249                 return;
1250         }
1251
1252         for (i = 0; i < iwe->u.freq.e; i++)
1253                 divi /= 10;
1254         res->res.freq = iwe->u.freq.m / divi;
1255 }
1256
1257
1258 static void wext_get_scan_qual(struct iw_event *iwe,
1259                                struct wext_scan_data *res)
1260 {
1261         res->res.qual = iwe->u.qual.qual;
1262         res->res.noise = iwe->u.qual.noise;
1263         res->res.level = iwe->u.qual.level;
1264 }
1265
1266
1267 static void wext_get_scan_encode(struct iw_event *iwe,
1268                                  struct wext_scan_data *res)
1269 {
1270         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1271                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1272 }
1273
1274
1275 static void wext_get_scan_rate(struct iw_event *iwe,
1276                                struct wext_scan_data *res, char *pos,
1277                                char *end)
1278 {
1279         int maxrate;
1280         char *custom = pos + IW_EV_LCP_LEN;
1281         struct iw_param p;
1282         size_t clen;
1283
1284         clen = iwe->len;
1285         if (custom + clen > end)
1286                 return;
1287         maxrate = 0;
1288         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1289                 /* Note: may be misaligned, make a local, aligned copy */
1290                 os_memcpy(&p, custom, sizeof(struct iw_param));
1291                 if (p.value > maxrate)
1292                         maxrate = p.value;
1293                 clen -= sizeof(struct iw_param);
1294                 custom += sizeof(struct iw_param);
1295         }
1296
1297         /* Convert the maxrate from WE-style (b/s units) to
1298          * 802.11 rates (500000 b/s units).
1299          */
1300         res->maxrate = maxrate / 500000;
1301 }
1302
1303
1304 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1305                                     struct wext_scan_data *res, char *custom,
1306                                     char *end)
1307 {
1308         char *genie, *gpos, *gend;
1309         u8 *tmp;
1310
1311         if (iwe->u.data.length == 0)
1312                 return;
1313
1314         gpos = genie = custom;
1315         gend = genie + iwe->u.data.length;
1316         if (gend > end) {
1317                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1318                 return;
1319         }
1320
1321         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1322         if (tmp == NULL)
1323                 return;
1324         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1325         res->ie = tmp;
1326         res->ie_len += gend - gpos;
1327 }
1328
1329
1330 static void wext_get_scan_custom(struct iw_event *iwe,
1331                                  struct wext_scan_data *res, char *custom,
1332                                  char *end)
1333 {
1334         size_t clen;
1335         u8 *tmp;
1336
1337         clen = iwe->u.data.length;
1338         if (custom + clen > end)
1339                 return;
1340
1341         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1342                 char *spos;
1343                 int bytes;
1344                 spos = custom + 7;
1345                 bytes = custom + clen - spos;
1346                 if (bytes & 1 || bytes == 0)
1347                         return;
1348                 bytes /= 2;
1349                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1350                 if (tmp == NULL)
1351                         return;
1352                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1353                 res->ie = tmp;
1354                 res->ie_len += bytes;
1355         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1356                 char *spos;
1357                 int bytes;
1358                 spos = custom + 7;
1359                 bytes = custom + clen - spos;
1360                 if (bytes & 1 || bytes == 0)
1361                         return;
1362                 bytes /= 2;
1363                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1364                 if (tmp == NULL)
1365                         return;
1366                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1367                 res->ie = tmp;
1368                 res->ie_len += bytes;
1369         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1370                 char *spos;
1371                 int bytes;
1372                 u8 bin[8];
1373                 spos = custom + 4;
1374                 bytes = custom + clen - spos;
1375                 if (bytes != 16) {
1376                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1377                         return;
1378                 }
1379                 bytes /= 2;
1380                 hexstr2bin(spos, bin, bytes);
1381                 res->res.tsf += WPA_GET_BE64(bin);
1382         }
1383 }
1384
1385
1386 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1387 {
1388         return drv->we_version_compiled > 18 &&
1389                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1390                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1391 }
1392
1393
1394 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1395                                            struct wext_scan_data *data)
1396 {
1397         struct wpa_scan_res **tmp;
1398         struct wpa_scan_res *r;
1399         size_t extra_len;
1400         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1401
1402         /* Figure out whether we need to fake any IEs */
1403         pos = data->ie;
1404         end = pos + data->ie_len;
1405         while (pos && pos + 1 < end) {
1406                 if (pos + 2 + pos[1] > end)
1407                         break;
1408                 if (pos[0] == WLAN_EID_SSID)
1409                         ssid_ie = pos;
1410                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1411                         rate_ie = pos;
1412                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1413                         rate_ie = pos;
1414                 pos += 2 + pos[1];
1415         }
1416
1417         extra_len = 0;
1418         if (ssid_ie == NULL)
1419                 extra_len += 2 + data->ssid_len;
1420         if (rate_ie == NULL && data->maxrate)
1421                 extra_len += 3;
1422
1423         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1424         if (r == NULL)
1425                 return;
1426         os_memcpy(r, &data->res, sizeof(*r));
1427         r->ie_len = extra_len + data->ie_len;
1428         pos = (u8 *) (r + 1);
1429         if (ssid_ie == NULL) {
1430                 /*
1431                  * Generate a fake SSID IE since the driver did not report
1432                  * a full IE list.
1433                  */
1434                 *pos++ = WLAN_EID_SSID;
1435                 *pos++ = data->ssid_len;
1436                 os_memcpy(pos, data->ssid, data->ssid_len);
1437                 pos += data->ssid_len;
1438         }
1439         if (rate_ie == NULL && data->maxrate) {
1440                 /*
1441                  * Generate a fake Supported Rates IE since the driver did not
1442                  * report a full IE list.
1443                  */
1444                 *pos++ = WLAN_EID_SUPP_RATES;
1445                 *pos++ = 1;
1446                 *pos++ = data->maxrate;
1447         }
1448         if (data->ie)
1449                 os_memcpy(pos, data->ie, data->ie_len);
1450
1451         tmp = os_realloc(res->res,
1452                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1453         if (tmp == NULL) {
1454                 os_free(r);
1455                 return;
1456         }
1457         tmp[res->num++] = r;
1458         res->res = tmp;
1459 }
1460
1461
1462 /**
1463  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1464  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1465  * Returns: Scan results on success, -1 on failure
1466  */
1467 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1468 {
1469         struct wpa_driver_wext_data *drv = priv;
1470         size_t ap_num = 0, len;
1471         int first;
1472         u8 *res_buf;
1473         struct iw_event iwe_buf, *iwe = &iwe_buf;
1474         char *pos, *end, *custom;
1475         struct wpa_scan_results *res;
1476         struct wext_scan_data data;
1477
1478         res_buf = wpa_driver_wext_giwscan(drv, &len);
1479         if (res_buf == NULL)
1480                 return NULL;
1481
1482         ap_num = 0;
1483         first = 1;
1484
1485         res = os_zalloc(sizeof(*res));
1486         if (res == NULL) {
1487                 os_free(res_buf);
1488                 return NULL;
1489         }
1490
1491         pos = (char *) res_buf;
1492         end = (char *) res_buf + len;
1493         os_memset(&data, 0, sizeof(data));
1494
1495         while (pos + IW_EV_LCP_LEN <= end) {
1496                 /* Event data may be unaligned, so make a local, aligned copy
1497                  * before processing. */
1498                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1499                 if (iwe->len <= IW_EV_LCP_LEN)
1500                         break;
1501
1502                 custom = pos + IW_EV_POINT_LEN;
1503                 if (wext_19_iw_point(drv, iwe->cmd)) {
1504                         /* WE-19 removed the pointer from struct iw_point */
1505                         char *dpos = (char *) &iwe_buf.u.data.length;
1506                         int dlen = dpos - (char *) &iwe_buf;
1507                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1508                                   sizeof(struct iw_event) - dlen);
1509                 } else {
1510                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1511                         custom += IW_EV_POINT_OFF;
1512                 }
1513
1514                 switch (iwe->cmd) {
1515                 case SIOCGIWAP:
1516                         if (!first)
1517                                 wpa_driver_wext_add_scan_entry(res, &data);
1518                         first = 0;
1519                         os_free(data.ie);
1520                         os_memset(&data, 0, sizeof(data));
1521                         os_memcpy(data.res.bssid,
1522                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1523                         break;
1524                 case SIOCGIWMODE:
1525                         wext_get_scan_mode(iwe, &data);
1526                         break;
1527                 case SIOCGIWESSID:
1528                         wext_get_scan_ssid(iwe, &data, custom, end);
1529                         break;
1530                 case SIOCGIWFREQ:
1531                         wext_get_scan_freq(iwe, &data);
1532                         break;
1533                 case IWEVQUAL:
1534                         wext_get_scan_qual(iwe, &data);
1535                         break;
1536                 case SIOCGIWENCODE:
1537                         wext_get_scan_encode(iwe, &data);
1538                         break;
1539                 case SIOCGIWRATE:
1540                         wext_get_scan_rate(iwe, &data, pos, end);
1541                         break;
1542                 case IWEVGENIE:
1543                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1544                         break;
1545                 case IWEVCUSTOM:
1546                         wext_get_scan_custom(iwe, &data, custom, end);
1547                         break;
1548                 }
1549
1550                 pos += iwe->len;
1551         }
1552         os_free(res_buf);
1553         res_buf = NULL;
1554         if (!first)
1555                 wpa_driver_wext_add_scan_entry(res, &data);
1556         os_free(data.ie);
1557
1558         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1559                    (unsigned long) len, (unsigned long) res->num);
1560
1561         return res;
1562 }
1563
1564
1565 static int wpa_driver_wext_get_range(void *priv)
1566 {
1567         struct wpa_driver_wext_data *drv = priv;
1568         struct iw_range *range;
1569         struct iwreq iwr;
1570         int minlen;
1571         size_t buflen;
1572
1573         /*
1574          * Use larger buffer than struct iw_range in order to allow the
1575          * structure to grow in the future.
1576          */
1577         buflen = sizeof(struct iw_range) + 500;
1578         range = os_zalloc(buflen);
1579         if (range == NULL)
1580                 return -1;
1581
1582         os_memset(&iwr, 0, sizeof(iwr));
1583         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1584         iwr.u.data.pointer = (caddr_t) range;
1585         iwr.u.data.length = buflen;
1586
1587         minlen = ((char *) &range->enc_capa) - (char *) range +
1588                 sizeof(range->enc_capa);
1589
1590         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1591                 perror("ioctl[SIOCGIWRANGE]");
1592                 os_free(range);
1593                 return -1;
1594         } else if (iwr.u.data.length >= minlen &&
1595                    range->we_version_compiled >= 18) {
1596                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1597                            "WE(source)=%d enc_capa=0x%x",
1598                            range->we_version_compiled,
1599                            range->we_version_source,
1600                            range->enc_capa);
1601                 drv->has_capability = 1;
1602                 drv->we_version_compiled = range->we_version_compiled;
1603                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1604                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1605                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1606                 }
1607                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1608                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1609                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1610                 }
1611                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1612                         WPA_DRIVER_CAPA_ENC_WEP104;
1613                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1614                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1615                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1616                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1617                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1618                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1619                 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1620                         WPA_DRIVER_AUTH_SHARED |
1621                         WPA_DRIVER_AUTH_LEAP;
1622
1623                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1624                            "flags 0x%x",
1625                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1626         } else {
1627                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1628                            "assuming WPA is not supported");
1629         }
1630
1631         os_free(range);
1632         return 0;
1633 }
1634
1635
1636 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1637 {
1638         struct wpa_driver_wext_data *drv = priv;
1639         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1640
1641         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1642                                               enabled);
1643 }
1644
1645
1646 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1647                                    const u8 *psk)
1648 {
1649         struct iw_encode_ext *ext;
1650         struct iwreq iwr;
1651         int ret;
1652
1653         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1654
1655         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1656                 return 0;
1657
1658         if (!psk)
1659                 return 0;
1660
1661         os_memset(&iwr, 0, sizeof(iwr));
1662         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1663
1664         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1665         if (ext == NULL)
1666                 return -1;
1667
1668         iwr.u.encoding.pointer = (caddr_t) ext;
1669         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1670         ext->key_len = PMK_LEN;
1671         os_memcpy(&ext->key, psk, ext->key_len);
1672         ext->alg = IW_ENCODE_ALG_PMK;
1673
1674         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1675         if (ret < 0)
1676                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1677         os_free(ext);
1678
1679         return ret;
1680 }
1681
1682
1683 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1684                                        const u8 *addr, int key_idx,
1685                                        int set_tx, const u8 *seq,
1686                                        size_t seq_len,
1687                                        const u8 *key, size_t key_len)
1688 {
1689         struct wpa_driver_wext_data *drv = priv;
1690         struct iwreq iwr;
1691         int ret = 0;
1692         struct iw_encode_ext *ext;
1693
1694         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1695                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1696                            __FUNCTION__, (unsigned long) seq_len);
1697                 return -1;
1698         }
1699
1700         ext = os_zalloc(sizeof(*ext) + key_len);
1701         if (ext == NULL)
1702                 return -1;
1703         os_memset(&iwr, 0, sizeof(iwr));
1704         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1705         iwr.u.encoding.flags = key_idx + 1;
1706         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1707         if (alg == WPA_ALG_NONE)
1708                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1709         iwr.u.encoding.pointer = (caddr_t) ext;
1710         iwr.u.encoding.length = sizeof(*ext) + key_len;
1711
1712         if (addr == NULL ||
1713             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1714                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1715         if (set_tx)
1716                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1717
1718         ext->addr.sa_family = ARPHRD_ETHER;
1719         if (addr)
1720                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1721         else
1722                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1723         if (key && key_len) {
1724                 os_memcpy(ext + 1, key, key_len);
1725                 ext->key_len = key_len;
1726         }
1727         switch (alg) {
1728         case WPA_ALG_NONE:
1729                 ext->alg = IW_ENCODE_ALG_NONE;
1730                 break;
1731         case WPA_ALG_WEP:
1732                 ext->alg = IW_ENCODE_ALG_WEP;
1733                 break;
1734         case WPA_ALG_TKIP:
1735                 ext->alg = IW_ENCODE_ALG_TKIP;
1736                 break;
1737         case WPA_ALG_CCMP:
1738                 ext->alg = IW_ENCODE_ALG_CCMP;
1739                 break;
1740         case WPA_ALG_PMK:
1741                 ext->alg = IW_ENCODE_ALG_PMK;
1742                 break;
1743 #ifdef CONFIG_IEEE80211W
1744         case WPA_ALG_IGTK:
1745                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1746                 break;
1747 #endif /* CONFIG_IEEE80211W */
1748         default:
1749                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1750                            __FUNCTION__, alg);
1751                 os_free(ext);
1752                 return -1;
1753         }
1754
1755         if (seq && seq_len) {
1756                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1757                 os_memcpy(ext->rx_seq, seq, seq_len);
1758         }
1759
1760         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1761                 ret = errno == EOPNOTSUPP ? -2 : -1;
1762                 if (errno == ENODEV) {
1763                         /*
1764                          * ndiswrapper seems to be returning incorrect error
1765                          * code.. */
1766                         ret = -2;
1767                 }
1768
1769                 perror("ioctl[SIOCSIWENCODEEXT]");
1770         }
1771
1772         os_free(ext);
1773         return ret;
1774 }
1775
1776
1777 /**
1778  * wpa_driver_wext_set_key - Configure encryption key
1779  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1780  * @priv: Private driver interface data
1781  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1782  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1783  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1784  *      broadcast/default keys
1785  * @key_idx: key index (0..3), usually 0 for unicast keys
1786  * @set_tx: Configure this key as the default Tx key (only used when
1787  *      driver does not support separate unicast/individual key
1788  * @seq: Sequence number/packet number, seq_len octets, the next
1789  *      packet number to be used for in replay protection; configured
1790  *      for Rx keys (in most cases, this is only used with broadcast
1791  *      keys and set to zero for unicast keys)
1792  * @seq_len: Length of the seq, depends on the algorithm:
1793  *      TKIP: 6 octets, CCMP: 6 octets
1794  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1795  *      8-byte Rx Mic Key
1796  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1797  *      TKIP: 32, CCMP: 16)
1798  * Returns: 0 on success, -1 on failure
1799  *
1800  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1801  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1802  */
1803 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1804                             const u8 *addr, int key_idx,
1805                             int set_tx, const u8 *seq, size_t seq_len,
1806                             const u8 *key, size_t key_len)
1807 {
1808         struct wpa_driver_wext_data *drv = priv;
1809         struct iwreq iwr;
1810         int ret = 0;
1811
1812         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1813                    "key_len=%lu",
1814                    __FUNCTION__, alg, key_idx, set_tx,
1815                    (unsigned long) seq_len, (unsigned long) key_len);
1816
1817         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1818                                           seq, seq_len, key, key_len);
1819         if (ret == 0)
1820                 return 0;
1821
1822         if (ret == -2 &&
1823             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1824                 wpa_printf(MSG_DEBUG, "Driver did not support "
1825                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1826                 ret = 0;
1827         } else {
1828                 wpa_printf(MSG_DEBUG, "Driver did not support "
1829                            "SIOCSIWENCODEEXT");
1830                 return ret;
1831         }
1832
1833         os_memset(&iwr, 0, sizeof(iwr));
1834         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1835         iwr.u.encoding.flags = key_idx + 1;
1836         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1837         if (alg == WPA_ALG_NONE)
1838                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1839         iwr.u.encoding.pointer = (caddr_t) key;
1840         iwr.u.encoding.length = key_len;
1841
1842         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1843                 perror("ioctl[SIOCSIWENCODE]");
1844                 ret = -1;
1845         }
1846
1847         if (set_tx && alg != WPA_ALG_NONE) {
1848                 os_memset(&iwr, 0, sizeof(iwr));
1849                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1850                 iwr.u.encoding.flags = key_idx + 1;
1851                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1852                 iwr.u.encoding.pointer = (caddr_t) NULL;
1853                 iwr.u.encoding.length = 0;
1854                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1855                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1856                         ret = -1;
1857                 }
1858         }
1859
1860         return ret;
1861 }
1862
1863
1864 static int wpa_driver_wext_set_countermeasures(void *priv,
1865                                                int enabled)
1866 {
1867         struct wpa_driver_wext_data *drv = priv;
1868         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1869         return wpa_driver_wext_set_auth_param(drv,
1870                                               IW_AUTH_TKIP_COUNTERMEASURES,
1871                                               enabled);
1872 }
1873
1874
1875 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1876                                                 int enabled)
1877 {
1878         struct wpa_driver_wext_data *drv = priv;
1879         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1880         drv->use_crypt = enabled;
1881         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1882                                               enabled);
1883 }
1884
1885
1886 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1887                                 const u8 *addr, int cmd, int reason_code)
1888 {
1889         struct iwreq iwr;
1890         struct iw_mlme mlme;
1891         int ret = 0;
1892
1893         os_memset(&iwr, 0, sizeof(iwr));
1894         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1895         os_memset(&mlme, 0, sizeof(mlme));
1896         mlme.cmd = cmd;
1897         mlme.reason_code = reason_code;
1898         mlme.addr.sa_family = ARPHRD_ETHER;
1899         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1900         iwr.u.data.pointer = (caddr_t) &mlme;
1901         iwr.u.data.length = sizeof(mlme);
1902
1903         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1904                 perror("ioctl[SIOCSIWMLME]");
1905                 ret = -1;
1906         }
1907
1908         return ret;
1909 }
1910
1911
1912 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1913 {
1914         struct iwreq iwr;
1915         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1916         u8 ssid[32];
1917         int i;
1918
1919         /*
1920          * Only force-disconnect when the card is in infrastructure mode,
1921          * otherwise the driver might interpret the cleared BSSID and random
1922          * SSID as an attempt to create a new ad-hoc network.
1923          */
1924         os_memset(&iwr, 0, sizeof(iwr));
1925         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1926         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
1927                 perror("ioctl[SIOCGIWMODE]");
1928                 iwr.u.mode = IW_MODE_INFRA;
1929         }
1930
1931         if (iwr.u.mode == IW_MODE_INFRA) {
1932                 /*
1933                  * Clear the BSSID selection and set a random SSID to make sure
1934                  * the driver will not be trying to associate with something
1935                  * even if it does not understand SIOCSIWMLME commands (or
1936                  * tries to associate automatically after deauth/disassoc).
1937                  */
1938                 wpa_driver_wext_set_bssid(drv, null_bssid);
1939
1940                 for (i = 0; i < 32; i++)
1941                         ssid[i] = rand() & 0xFF;
1942                 wpa_driver_wext_set_ssid(drv, ssid, 32);
1943         }
1944 }
1945
1946
1947 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1948                                           int reason_code)
1949 {
1950         struct wpa_driver_wext_data *drv = priv;
1951         int ret;
1952         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1953         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1954         wpa_driver_wext_disconnect(drv);
1955         return ret;
1956 }
1957
1958
1959 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1960                                         int reason_code)
1961 {
1962         struct wpa_driver_wext_data *drv = priv;
1963         int ret;
1964         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1965         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1966         wpa_driver_wext_disconnect(drv);
1967         return ret;
1968 }
1969
1970
1971 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1972                                       size_t ie_len)
1973 {
1974         struct wpa_driver_wext_data *drv = priv;
1975         struct iwreq iwr;
1976         int ret = 0;
1977
1978         os_memset(&iwr, 0, sizeof(iwr));
1979         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1980         iwr.u.data.pointer = (caddr_t) ie;
1981         iwr.u.data.length = ie_len;
1982
1983         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
1984                 perror("ioctl[SIOCSIWGENIE]");
1985                 ret = -1;
1986         }
1987
1988         return ret;
1989 }
1990
1991
1992 int wpa_driver_wext_cipher2wext(int cipher)
1993 {
1994         switch (cipher) {
1995         case CIPHER_NONE:
1996                 return IW_AUTH_CIPHER_NONE;
1997         case CIPHER_WEP40:
1998                 return IW_AUTH_CIPHER_WEP40;
1999         case CIPHER_TKIP:
2000                 return IW_AUTH_CIPHER_TKIP;
2001         case CIPHER_CCMP:
2002                 return IW_AUTH_CIPHER_CCMP;
2003         case CIPHER_WEP104:
2004                 return IW_AUTH_CIPHER_WEP104;
2005         default:
2006                 return 0;
2007         }
2008 }
2009
2010
2011 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2012 {
2013         switch (keymgmt) {
2014         case KEY_MGMT_802_1X:
2015         case KEY_MGMT_802_1X_NO_WPA:
2016                 return IW_AUTH_KEY_MGMT_802_1X;
2017         case KEY_MGMT_PSK:
2018                 return IW_AUTH_KEY_MGMT_PSK;
2019         default:
2020                 return 0;
2021         }
2022 }
2023
2024
2025 static int
2026 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2027                                   struct wpa_driver_associate_params *params)
2028 {
2029         struct iwreq iwr;
2030         int ret = 0;
2031
2032         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2033                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2034
2035         os_memset(&iwr, 0, sizeof(iwr));
2036         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2037         /* Just changing mode, not actual keys */
2038         iwr.u.encoding.flags = 0;
2039         iwr.u.encoding.pointer = (caddr_t) NULL;
2040         iwr.u.encoding.length = 0;
2041
2042         /*
2043          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2044          * different things. Here they are used to indicate Open System vs.
2045          * Shared Key authentication algorithm. However, some drivers may use
2046          * them to select between open/restricted WEP encrypted (open = allow
2047          * both unencrypted and encrypted frames; restricted = only allow
2048          * encrypted frames).
2049          */
2050
2051         if (!drv->use_crypt) {
2052                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2053         } else {
2054                 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2055                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2056                 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2057                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2058         }
2059
2060         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2061                 perror("ioctl[SIOCSIWENCODE]");
2062                 ret = -1;
2063         }
2064
2065         return ret;
2066 }
2067
2068
2069 int wpa_driver_wext_associate(void *priv,
2070                               struct wpa_driver_associate_params *params)
2071 {
2072         struct wpa_driver_wext_data *drv = priv;
2073         int ret = 0;
2074         int allow_unencrypted_eapol;
2075         int value;
2076
2077         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2078
2079         /*
2080          * If the driver did not support SIOCSIWAUTH, fallback to
2081          * SIOCSIWENCODE here.
2082          */
2083         if (drv->auth_alg_fallback &&
2084             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2085                 ret = -1;
2086
2087         if (!params->bssid &&
2088             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2089                 ret = -1;
2090
2091         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2092          * from configuration, not from here, where only the selected suite is
2093          * available */
2094         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2095             < 0)
2096                 ret = -1;
2097         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2098                 value = IW_AUTH_WPA_VERSION_DISABLED;
2099         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2100                 value = IW_AUTH_WPA_VERSION_WPA2;
2101         else
2102                 value = IW_AUTH_WPA_VERSION_WPA;
2103         if (wpa_driver_wext_set_auth_param(drv,
2104                                            IW_AUTH_WPA_VERSION, value) < 0)
2105                 ret = -1;
2106         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2107         if (wpa_driver_wext_set_auth_param(drv,
2108                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2109                 ret = -1;
2110         value = wpa_driver_wext_cipher2wext(params->group_suite);
2111         if (wpa_driver_wext_set_auth_param(drv,
2112                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2113                 ret = -1;
2114         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2115         if (wpa_driver_wext_set_auth_param(drv,
2116                                            IW_AUTH_KEY_MGMT, value) < 0)
2117                 ret = -1;
2118         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2119                 params->pairwise_suite != CIPHER_NONE ||
2120                 params->group_suite != CIPHER_NONE ||
2121                 params->wpa_ie_len;
2122         if (wpa_driver_wext_set_auth_param(drv,
2123                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2124                 ret = -1;
2125
2126         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2127          * not using WPA. IEEE 802.1X specifies that these frames are not
2128          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2129         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2130             params->key_mgmt_suite == KEY_MGMT_PSK)
2131                 allow_unencrypted_eapol = 0;
2132         else
2133                 allow_unencrypted_eapol = 1;
2134
2135         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2136                 ret = -1;
2137         if (wpa_driver_wext_set_auth_param(drv,
2138                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2139                                            allow_unencrypted_eapol) < 0)
2140                 ret = -1;
2141 #ifdef CONFIG_IEEE80211W
2142         switch (params->mgmt_frame_protection) {
2143         case NO_MGMT_FRAME_PROTECTION:
2144                 value = IW_AUTH_MFP_DISABLED;
2145                 break;
2146         case MGMT_FRAME_PROTECTION_OPTIONAL:
2147                 value = IW_AUTH_MFP_OPTIONAL;
2148                 break;
2149         case MGMT_FRAME_PROTECTION_REQUIRED:
2150                 value = IW_AUTH_MFP_REQUIRED;
2151                 break;
2152         };
2153         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2154                 ret = -1;
2155 #endif /* CONFIG_IEEE80211W */
2156         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2157                 ret = -1;
2158         if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2159                 ret = -1;
2160         if (params->bssid &&
2161             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2162                 ret = -1;
2163
2164         return ret;
2165 }
2166
2167
2168 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2169 {
2170         struct wpa_driver_wext_data *drv = priv;
2171         int algs = 0, res;
2172
2173         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2174                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2175         if (auth_alg & AUTH_ALG_SHARED_KEY)
2176                 algs |= IW_AUTH_ALG_SHARED_KEY;
2177         if (auth_alg & AUTH_ALG_LEAP)
2178                 algs |= IW_AUTH_ALG_LEAP;
2179         if (algs == 0) {
2180                 /* at least one algorithm should be set */
2181                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2182         }
2183
2184         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2185                                              algs);
2186         drv->auth_alg_fallback = res == -2;
2187         return res;
2188 }
2189
2190
2191 /**
2192  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2193  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2194  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2195  * Returns: 0 on success, -1 on failure
2196  */
2197 int wpa_driver_wext_set_mode(void *priv, int mode)
2198 {
2199         struct wpa_driver_wext_data *drv = priv;
2200         struct iwreq iwr;
2201         int ret = -1, flags;
2202         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2203
2204         os_memset(&iwr, 0, sizeof(iwr));
2205         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2206         iwr.u.mode = new_mode;
2207         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2208                 ret = 0;
2209                 goto done;
2210         }
2211
2212         if (errno != EBUSY) {
2213                 perror("ioctl[SIOCSIWMODE]");
2214                 goto done;
2215         }
2216
2217         /* mac80211 doesn't allow mode changes while the device is up, so if
2218          * the device isn't in the mode we're about to change to, take device
2219          * down, try to set the mode again, and bring it back up.
2220          */
2221         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2222                 perror("ioctl[SIOCGIWMODE]");
2223                 goto done;
2224         }
2225
2226         if (iwr.u.mode == new_mode) {
2227                 ret = 0;
2228                 goto done;
2229         }
2230
2231         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2232                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2233
2234                 /* Try to set the mode again while the interface is down */
2235                 iwr.u.mode = new_mode;
2236                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2237                         perror("ioctl[SIOCSIWMODE]");
2238                 else
2239                         ret = 0;
2240
2241                 /* Ignore return value of get_ifflags to ensure that the device
2242                  * is always up like it was before this function was called.
2243                  */
2244                 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2245                 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2246         }
2247
2248 done:
2249         return ret;
2250 }
2251
2252
2253 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2254                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2255 {
2256         struct iwreq iwr;
2257         struct iw_pmksa pmksa;
2258         int ret = 0;
2259
2260         os_memset(&iwr, 0, sizeof(iwr));
2261         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2262         os_memset(&pmksa, 0, sizeof(pmksa));
2263         pmksa.cmd = cmd;
2264         pmksa.bssid.sa_family = ARPHRD_ETHER;
2265         if (bssid)
2266                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2267         if (pmkid)
2268                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2269         iwr.u.data.pointer = (caddr_t) &pmksa;
2270         iwr.u.data.length = sizeof(pmksa);
2271
2272         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2273                 if (errno != EOPNOTSUPP)
2274                         perror("ioctl[SIOCSIWPMKSA]");
2275                 ret = -1;
2276         }
2277
2278         return ret;
2279 }
2280
2281
2282 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2283                                      const u8 *pmkid)
2284 {
2285         struct wpa_driver_wext_data *drv = priv;
2286         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2287 }
2288
2289
2290 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2291                                         const u8 *pmkid)
2292 {
2293         struct wpa_driver_wext_data *drv = priv;
2294         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2295 }
2296
2297
2298 static int wpa_driver_wext_flush_pmkid(void *priv)
2299 {
2300         struct wpa_driver_wext_data *drv = priv;
2301         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2302 }
2303
2304
2305 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2306 {
2307         struct wpa_driver_wext_data *drv = priv;
2308         if (!drv->has_capability)
2309                 return -1;
2310         os_memcpy(capa, &drv->capa, sizeof(*capa));
2311         return 0;
2312 }
2313
2314
2315 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2316                                         const char *ifname)
2317 {
2318         if (ifname == NULL) {
2319                 drv->ifindex2 = -1;
2320                 return 0;
2321         }
2322
2323         drv->ifindex2 = if_nametoindex(ifname);
2324         if (drv->ifindex2 <= 0)
2325                 return -1;
2326
2327         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2328                    "wireless events", drv->ifindex2, ifname);
2329
2330         return 0;
2331 }
2332
2333
2334 int wpa_driver_wext_set_operstate(void *priv, int state)
2335 {
2336         struct wpa_driver_wext_data *drv = priv;
2337
2338         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2339                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2340         drv->operstate = state;
2341         return wpa_driver_wext_send_oper_ifla(
2342                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2343 }
2344
2345
2346 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2347 {
2348         return drv->we_version_compiled;
2349 }
2350
2351
2352 const struct wpa_driver_ops wpa_driver_wext_ops = {
2353         .name = "wext",
2354         .desc = "Linux wireless extensions (generic)",
2355         .get_bssid = wpa_driver_wext_get_bssid,
2356         .get_ssid = wpa_driver_wext_get_ssid,
2357         .set_wpa = wpa_driver_wext_set_wpa,
2358         .set_key = wpa_driver_wext_set_key,
2359         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2360         .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2361         .scan = wpa_driver_wext_scan,
2362         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2363         .deauthenticate = wpa_driver_wext_deauthenticate,
2364         .disassociate = wpa_driver_wext_disassociate,
2365         .set_mode = wpa_driver_wext_set_mode,
2366         .associate = wpa_driver_wext_associate,
2367         .set_auth_alg = wpa_driver_wext_set_auth_alg,
2368         .init = wpa_driver_wext_init,
2369         .deinit = wpa_driver_wext_deinit,
2370         .add_pmkid = wpa_driver_wext_add_pmkid,
2371         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2372         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2373         .get_capa = wpa_driver_wext_get_capa,
2374         .set_operstate = wpa_driver_wext_set_operstate,
2375 };