www.project-moonshot.org Git - mech_eap.orig/blob - 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 int 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                 goto err1;
 919         }
 920
 921         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
 922         if (s < 0) {
 923                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
 924                 goto err2;
 925         }
 926         drv->event_sock = s;
 927
 928         os_memset(&local, 0, sizeof(local));
 929         local.nl_family = AF_NETLINK;
 930         local.nl_groups = RTMGRP_LINK;
 931         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
 932                 perror("bind(netlink)");
 933                 goto err3;
 934         }
 935
 936         eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
 937
 938         drv->mlme_sock = -1;
 939
 940         if (wpa_driver_wext_finish_drv_init(drv) < 0)
 941                 goto err4;
 942
 943         return drv;
 944
 945 err4:
 946         eloop_unregister_read_sock(drv->event_sock);
 947 err3:
 948         close(drv->event_sock);
 949 err2:
 950         close(drv->ioctl_sock);
 951 err1:
 952         os_free(drv);
 953         return NULL;
 954 }
 955
 956
 957 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
 958 {
 959         int flags;
 960
 961         if (wpa_driver_wext_get_ifflags(drv, &flags) != 0) {
 962                 wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
 963                            drv->ifname);
 964                 return -1;
 965         }
 966
 967         if (!(flags & IFF_UP)) {
 968                 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
 969                         wpa_printf(MSG_ERROR, "Could not set interface '%s' "
 970                                    "UP", drv->ifname);
 971                         return -1;
 972                 } else {
 973                         /*
 974                          * Wait some time to allow driver to initialize before
 975                          * starting configuring the driver. This seems to be
 976                          * needed at least some drivers that load firmware etc.
 977                          * when the interface is set up.
 978                          */
 979                         wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
 980                                    "a second for the driver to complete "
 981                                    "initialization", drv->ifname);
 982                         sleep(1);
 983                 }
 984         }
 985
 986         /*
 987          * Make sure that the driver does not have any obsolete PMKID entries.
 988          */
 989         wpa_driver_wext_flush_pmkid(drv);
 990
 991         if (wpa_driver_wext_set_mode(drv, 0) < 0) {
 992                 wpa_printf(MSG_DEBUG, "Could not configure driver to use "
 993                            "managed mode");
 994                 /* Try to use it anyway */
 995         }
 996
 997         wpa_driver_wext_get_range(drv);
 998
 999         /*
1000          * Unlock the driver's BSSID and force to a random SSID to clear any
1001          * previous association the driver might have when the supplicant
1002          * starts up.
1003          */
1004         wpa_driver_wext_disconnect(drv);
1005
1006         drv->ifindex = if_nametoindex(drv->ifname);
1007
1008         if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
1009                 /*
1010                  * Host AP driver may use both wlan# and wifi# interface in
1011                  * wireless events. Since some of the versions included WE-18
1012                  * support, let's add the alternative ifindex also from
1013                  * driver_wext.c for the time being. This may be removed at
1014                  * some point once it is believed that old versions of the
1015                  * driver are not in use anymore.
1016                  */
1017                 char ifname2[IFNAMSIZ + 1];
1018                 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
1019                 os_memcpy(ifname2, "wifi", 4);
1020                 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1021         }
1022
1023         wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1024
1025         return 0;
1026 }
1027
1028
1029 /**
1030  * wpa_driver_wext_deinit - Deinitialize WE driver interface
1031  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1032  *
1033  * Shut down driver interface and processing of driver events. Free
1034  * private data buffer if one was allocated in wpa_driver_wext_init().
1035  */
1036 void wpa_driver_wext_deinit(void *priv)
1037 {
1038         struct wpa_driver_wext_data *drv = priv;
1039         int flags;
1040
1041         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1042
1043         /*
1044          * Clear possibly configured driver parameters in order to make it
1045          * easier to use the driver after wpa_supplicant has been terminated.
1046          */
1047         wpa_driver_wext_disconnect(drv);
1048
1049         wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1050
1051         eloop_unregister_read_sock(drv->event_sock);
1052         if (drv->mlme_sock >= 0)
1053                 eloop_unregister_read_sock(drv->mlme_sock);
1054
1055         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1056                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1057
1058         close(drv->event_sock);
1059         close(drv->ioctl_sock);
1060         if (drv->mlme_sock >= 0)
1061                 close(drv->mlme_sock);
1062         os_free(drv->assoc_req_ies);
1063         os_free(drv->assoc_resp_ies);
1064         os_free(drv);
1065 }
1066
1067
1068 /**
1069  * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1070  * @eloop_ctx: Unused
1071  * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1072  *
1073  * This function can be used as registered timeout when starting a scan to
1074  * generate a scan completed event if the driver does not report this.
1075  */
1076 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1077 {
1078         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1079         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1080 }
1081
1082
1083 /**
1084  * wpa_driver_wext_scan - Request the driver to initiate scan
1085  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1086  * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
1087  *      all SSIDs (either active scan with wildcard SSID or passive
1088  *      scan)
1089  * @ssid_len: Length of the SSID
1090  * Returns: 0 on success, -1 on failure
1091  */
1092 int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len)
1093 {
1094         struct wpa_driver_wext_data *drv = priv;
1095         struct iwreq iwr;
1096         int ret = 0, timeout;
1097         struct iw_scan_req req;
1098
1099         if (ssid_len > IW_ESSID_MAX_SIZE) {
1100                 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1101                            __FUNCTION__, (unsigned long) ssid_len);
1102                 return -1;
1103         }
1104
1105         os_memset(&iwr, 0, sizeof(iwr));
1106         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1107
1108         if (ssid && ssid_len) {
1109                 os_memset(&req, 0, sizeof(req));
1110                 req.essid_len = ssid_len;
1111                 req.bssid.sa_family = ARPHRD_ETHER;
1112                 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1113                 os_memcpy(req.essid, ssid, ssid_len);
1114                 iwr.u.data.pointer = (caddr_t) &req;
1115                 iwr.u.data.length = sizeof(req);
1116                 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1117         }
1118
1119         if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1120                 perror("ioctl[SIOCSIWSCAN]");
1121                 ret = -1;
1122         }
1123
1124         /* Not all drivers generate "scan completed" wireless event, so try to
1125          * read results after a timeout. */
1126         timeout = 5;
1127         if (drv->scan_complete_events) {
1128                 /*
1129                  * The driver seems to deliver SIOCGIWSCAN events to notify
1130                  * when scan is complete, so use longer timeout to avoid race
1131                  * conditions with scanning and following association request.
1132                  */
1133                 timeout = 30;
1134         }
1135         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1136                    "seconds", ret, timeout);
1137         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1138         eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1139                                drv->ctx);
1140
1141         return ret;
1142 }
1143
1144
1145 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1146                                     size_t *len)
1147 {
1148         struct iwreq iwr;
1149         u8 *res_buf;
1150         size_t res_buf_len;
1151
1152         res_buf_len = IW_SCAN_MAX_DATA;
1153         for (;;) {
1154                 res_buf = os_malloc(res_buf_len);
1155                 if (res_buf == NULL)
1156                         return NULL;
1157                 os_memset(&iwr, 0, sizeof(iwr));
1158                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1159                 iwr.u.data.pointer = res_buf;
1160                 iwr.u.data.length = res_buf_len;
1161
1162                 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1163                         break;
1164
1165                 if (errno == E2BIG && res_buf_len < 65535) {
1166                         os_free(res_buf);
1167                         res_buf = NULL;
1168                         res_buf_len *= 2;
1169                         if (res_buf_len > 65535)
1170                                 res_buf_len = 65535; /* 16-bit length field */
1171                         wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1172                                    "trying larger buffer (%lu bytes)",
1173                                    (unsigned long) res_buf_len);
1174                 } else {
1175                         perror("ioctl[SIOCGIWSCAN]");
1176                         os_free(res_buf);
1177                         return NULL;
1178                 }
1179         }
1180
1181         if (iwr.u.data.length > res_buf_len) {
1182                 os_free(res_buf);
1183                 return NULL;
1184         }
1185         *len = iwr.u.data.length;
1186
1187         return res_buf;
1188 }
1189
1190
1191 /*
1192  * Data structure for collecting WEXT scan results. This is needed to allow
1193  * the various methods of reporting IEs to be combined into a single IE buffer.
1194  */
1195 struct wext_scan_data {
1196         struct wpa_scan_res res;
1197         u8 *ie;
1198         size_t ie_len;
1199         u8 ssid[32];
1200         size_t ssid_len;
1201         int maxrate;
1202 };
1203
1204
1205 static void wext_get_scan_mode(struct iw_event *iwe,
1206                                struct wext_scan_data *res)
1207 {
1208         if (iwe->u.mode == IW_MODE_ADHOC)
1209                 res->res.caps |= IEEE80211_CAP_IBSS;
1210         else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1211                 res->res.caps |= IEEE80211_CAP_ESS;
1212 }
1213
1214
1215 static void wext_get_scan_ssid(struct iw_event *iwe,
1216                                struct wext_scan_data *res, char *custom,
1217                                char *end)
1218 {
1219         int ssid_len = iwe->u.essid.length;
1220         if (custom + ssid_len > end)
1221                 return;
1222         if (iwe->u.essid.flags &&
1223             ssid_len > 0 &&
1224             ssid_len <= IW_ESSID_MAX_SIZE) {
1225                 os_memcpy(res->ssid, custom, ssid_len);
1226                 res->ssid_len = ssid_len;
1227         }
1228 }
1229
1230
1231 static void wext_get_scan_freq(struct iw_event *iwe,
1232                                struct wext_scan_data *res)
1233 {
1234         int divi = 1000000, i;
1235
1236         if (iwe->u.freq.e == 0) {
1237                 /*
1238                  * Some drivers do not report frequency, but a channel.
1239                  * Try to map this to frequency by assuming they are using
1240                  * IEEE 802.11b/g.  But don't overwrite a previously parsed
1241                  * frequency if the driver sends both frequency and channel,
1242                  * since the driver may be sending an A-band channel that we
1243                  * don't handle here.
1244                  */
1245
1246                 if (res->res.freq)
1247                         return;
1248
1249                 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1250                         res->res.freq = 2407 + 5 * iwe->u.freq.m;
1251                         return;
1252                 } else if (iwe->u.freq.m == 14) {
1253                         res->res.freq = 2484;
1254                         return;
1255                 }
1256         }
1257
1258         if (iwe->u.freq.e > 6) {
1259                 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1260                            MACSTR " m=%d e=%d)",
1261                            MAC2STR(res->res.bssid), iwe->u.freq.m,
1262                            iwe->u.freq.e);
1263                 return;
1264         }
1265
1266         for (i = 0; i < iwe->u.freq.e; i++)
1267                 divi /= 10;
1268         res->res.freq = iwe->u.freq.m / divi;
1269 }
1270
1271
1272 static void wext_get_scan_qual(struct iw_event *iwe,
1273                                struct wext_scan_data *res)
1274 {
1275         res->res.qual = iwe->u.qual.qual;
1276         res->res.noise = iwe->u.qual.noise;
1277         res->res.level = iwe->u.qual.level;
1278         if (iwe->u.qual.updated & IW_QUAL_QUAL_INVALID)
1279                 res->res.flags |= WPA_SCAN_QUAL_INVALID;
1280         if (iwe->u.qual.updated & IW_QUAL_LEVEL_INVALID)
1281                 res->res.flags |= WPA_SCAN_LEVEL_INVALID;
1282         if (iwe->u.qual.updated & IW_QUAL_NOISE_INVALID)
1283                 res->res.flags |= WPA_SCAN_NOISE_INVALID;
1284         if (iwe->u.qual.updated & IW_QUAL_DBM)
1285                 res->res.flags |= WPA_SCAN_LEVEL_DBM;
1286 }
1287
1288
1289 static void wext_get_scan_encode(struct iw_event *iwe,
1290                                  struct wext_scan_data *res)
1291 {
1292         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1293                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1294 }
1295
1296
1297 static void wext_get_scan_rate(struct iw_event *iwe,
1298                                struct wext_scan_data *res, char *pos,
1299                                char *end)
1300 {
1301         int maxrate;
1302         char *custom = pos + IW_EV_LCP_LEN;
1303         struct iw_param p;
1304         size_t clen;
1305
1306         clen = iwe->len;
1307         if (custom + clen > end)
1308                 return;
1309         maxrate = 0;
1310         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1311                 /* Note: may be misaligned, make a local, aligned copy */
1312                 os_memcpy(&p, custom, sizeof(struct iw_param));
1313                 if (p.value > maxrate)
1314                         maxrate = p.value;
1315                 clen -= sizeof(struct iw_param);
1316                 custom += sizeof(struct iw_param);
1317         }
1318
1319         /* Convert the maxrate from WE-style (b/s units) to
1320          * 802.11 rates (500000 b/s units).
1321          */
1322         res->maxrate = maxrate / 500000;
1323 }
1324
1325
1326 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1327                                     struct wext_scan_data *res, char *custom,
1328                                     char *end)
1329 {
1330         char *genie, *gpos, *gend;
1331         u8 *tmp;
1332
1333         if (iwe->u.data.length == 0)
1334                 return;
1335
1336         gpos = genie = custom;
1337         gend = genie + iwe->u.data.length;
1338         if (gend > end) {
1339                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1340                 return;
1341         }
1342
1343         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1344         if (tmp == NULL)
1345                 return;
1346         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1347         res->ie = tmp;
1348         res->ie_len += gend - gpos;
1349 }
1350
1351
1352 static void wext_get_scan_custom(struct iw_event *iwe,
1353                                  struct wext_scan_data *res, char *custom,
1354                                  char *end)
1355 {
1356         size_t clen;
1357         u8 *tmp;
1358
1359         clen = iwe->u.data.length;
1360         if (custom + clen > end)
1361                 return;
1362
1363         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1364                 char *spos;
1365                 int bytes;
1366                 spos = custom + 7;
1367                 bytes = custom + clen - spos;
1368                 if (bytes & 1 || bytes == 0)
1369                         return;
1370                 bytes /= 2;
1371                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1372                 if (tmp == NULL)
1373                         return;
1374                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1375                 res->ie = tmp;
1376                 res->ie_len += bytes;
1377         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1378                 char *spos;
1379                 int bytes;
1380                 spos = custom + 7;
1381                 bytes = custom + clen - spos;
1382                 if (bytes & 1 || bytes == 0)
1383                         return;
1384                 bytes /= 2;
1385                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1386                 if (tmp == NULL)
1387                         return;
1388                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1389                 res->ie = tmp;
1390                 res->ie_len += bytes;
1391         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1392                 char *spos;
1393                 int bytes;
1394                 u8 bin[8];
1395                 spos = custom + 4;
1396                 bytes = custom + clen - spos;
1397                 if (bytes != 16) {
1398                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1399                         return;
1400                 }
1401                 bytes /= 2;
1402                 hexstr2bin(spos, bin, bytes);
1403                 res->res.tsf += WPA_GET_BE64(bin);
1404         }
1405 }
1406
1407
1408 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1409 {
1410         return drv->we_version_compiled > 18 &&
1411                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1412                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1413 }
1414
1415
1416 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1417                                            struct wext_scan_data *data)
1418 {
1419         struct wpa_scan_res **tmp;
1420         struct wpa_scan_res *r;
1421         size_t extra_len;
1422         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1423
1424         /* Figure out whether we need to fake any IEs */
1425         pos = data->ie;
1426         end = pos + data->ie_len;
1427         while (pos && pos + 1 < end) {
1428                 if (pos + 2 + pos[1] > end)
1429                         break;
1430                 if (pos[0] == WLAN_EID_SSID)
1431                         ssid_ie = pos;
1432                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1433                         rate_ie = pos;
1434                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1435                         rate_ie = pos;
1436                 pos += 2 + pos[1];
1437         }
1438
1439         extra_len = 0;
1440         if (ssid_ie == NULL)
1441                 extra_len += 2 + data->ssid_len;
1442         if (rate_ie == NULL && data->maxrate)
1443                 extra_len += 3;
1444
1445         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1446         if (r == NULL)
1447                 return;
1448         os_memcpy(r, &data->res, sizeof(*r));
1449         r->ie_len = extra_len + data->ie_len;
1450         pos = (u8 *) (r + 1);
1451         if (ssid_ie == NULL) {
1452                 /*
1453                  * Generate a fake SSID IE since the driver did not report
1454                  * a full IE list.
1455                  */
1456                 *pos++ = WLAN_EID_SSID;
1457                 *pos++ = data->ssid_len;
1458                 os_memcpy(pos, data->ssid, data->ssid_len);
1459                 pos += data->ssid_len;
1460         }
1461         if (rate_ie == NULL && data->maxrate) {
1462                 /*
1463                  * Generate a fake Supported Rates IE since the driver did not
1464                  * report a full IE list.
1465                  */
1466                 *pos++ = WLAN_EID_SUPP_RATES;
1467                 *pos++ = 1;
1468                 *pos++ = data->maxrate;
1469         }
1470         if (data->ie)
1471                 os_memcpy(pos, data->ie, data->ie_len);
1472
1473         tmp = os_realloc(res->res,
1474                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1475         if (tmp == NULL) {
1476                 os_free(r);
1477                 return;
1478         }
1479         tmp[res->num++] = r;
1480         res->res = tmp;
1481 }
1482
1483
1484 /**
1485  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1486  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1487  * Returns: Scan results on success, -1 on failure
1488  */
1489 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1490 {
1491         struct wpa_driver_wext_data *drv = priv;
1492         size_t ap_num = 0, len;
1493         int first;
1494         u8 *res_buf;
1495         struct iw_event iwe_buf, *iwe = &iwe_buf;
1496         char *pos, *end, *custom;
1497         struct wpa_scan_results *res;
1498         struct wext_scan_data data;
1499
1500         res_buf = wpa_driver_wext_giwscan(drv, &len);
1501         if (res_buf == NULL)
1502                 return NULL;
1503
1504         ap_num = 0;
1505         first = 1;
1506
1507         res = os_zalloc(sizeof(*res));
1508         if (res == NULL) {
1509                 os_free(res_buf);
1510                 return NULL;
1511         }
1512
1513         pos = (char *) res_buf;
1514         end = (char *) res_buf + len;
1515         os_memset(&data, 0, sizeof(data));
1516
1517         while (pos + IW_EV_LCP_LEN <= end) {
1518                 /* Event data may be unaligned, so make a local, aligned copy
1519                  * before processing. */
1520                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1521                 if (iwe->len <= IW_EV_LCP_LEN)
1522                         break;
1523
1524                 custom = pos + IW_EV_POINT_LEN;
1525                 if (wext_19_iw_point(drv, iwe->cmd)) {
1526                         /* WE-19 removed the pointer from struct iw_point */
1527                         char *dpos = (char *) &iwe_buf.u.data.length;
1528                         int dlen = dpos - (char *) &iwe_buf;
1529                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1530                                   sizeof(struct iw_event) - dlen);
1531                 } else {
1532                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1533                         custom += IW_EV_POINT_OFF;
1534                 }
1535
1536                 switch (iwe->cmd) {
1537                 case SIOCGIWAP:
1538                         if (!first)
1539                                 wpa_driver_wext_add_scan_entry(res, &data);
1540                         first = 0;
1541                         os_free(data.ie);
1542                         os_memset(&data, 0, sizeof(data));
1543                         os_memcpy(data.res.bssid,
1544                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1545                         break;
1546                 case SIOCGIWMODE:
1547                         wext_get_scan_mode(iwe, &data);
1548                         break;
1549                 case SIOCGIWESSID:
1550                         wext_get_scan_ssid(iwe, &data, custom, end);
1551                         break;
1552                 case SIOCGIWFREQ:
1553                         wext_get_scan_freq(iwe, &data);
1554                         break;
1555                 case IWEVQUAL:
1556                         wext_get_scan_qual(iwe, &data);
1557                         break;
1558                 case SIOCGIWENCODE:
1559                         wext_get_scan_encode(iwe, &data);
1560                         break;
1561                 case SIOCGIWRATE:
1562                         wext_get_scan_rate(iwe, &data, pos, end);
1563                         break;
1564                 case IWEVGENIE:
1565                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1566                         break;
1567                 case IWEVCUSTOM:
1568                         wext_get_scan_custom(iwe, &data, custom, end);
1569                         break;
1570                 }
1571
1572                 pos += iwe->len;
1573         }
1574         os_free(res_buf);
1575         res_buf = NULL;
1576         if (!first)
1577                 wpa_driver_wext_add_scan_entry(res, &data);
1578         os_free(data.ie);
1579
1580         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1581                    (unsigned long) len, (unsigned long) res->num);
1582
1583         return res;
1584 }
1585
1586
1587 static int wpa_driver_wext_get_range(void *priv)
1588 {
1589         struct wpa_driver_wext_data *drv = priv;
1590         struct iw_range *range;
1591         struct iwreq iwr;
1592         int minlen;
1593         size_t buflen;
1594
1595         /*
1596          * Use larger buffer than struct iw_range in order to allow the
1597          * structure to grow in the future.
1598          */
1599         buflen = sizeof(struct iw_range) + 500;
1600         range = os_zalloc(buflen);
1601         if (range == NULL)
1602                 return -1;
1603
1604         os_memset(&iwr, 0, sizeof(iwr));
1605         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1606         iwr.u.data.pointer = (caddr_t) range;
1607         iwr.u.data.length = buflen;
1608
1609         minlen = ((char *) &range->enc_capa) - (char *) range +
1610                 sizeof(range->enc_capa);
1611
1612         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1613                 perror("ioctl[SIOCGIWRANGE]");
1614                 os_free(range);
1615                 return -1;
1616         } else if (iwr.u.data.length >= minlen &&
1617                    range->we_version_compiled >= 18) {
1618                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1619                            "WE(source)=%d enc_capa=0x%x",
1620                            range->we_version_compiled,
1621                            range->we_version_source,
1622                            range->enc_capa);
1623                 drv->has_capability = 1;
1624                 drv->we_version_compiled = range->we_version_compiled;
1625                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1626                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1627                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1628                 }
1629                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1630                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1631                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1632                 }
1633                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1634                         WPA_DRIVER_CAPA_ENC_WEP104;
1635                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1636                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1637                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1638                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1639                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1640                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1641                 drv->capa.max_scan_ssids = 1;
1642
1643                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1644                            "flags 0x%x",
1645                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1646         } else {
1647                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1648                            "assuming WPA is not supported");
1649         }
1650
1651         os_free(range);
1652         return 0;
1653 }
1654
1655
1656 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1657 {
1658         struct wpa_driver_wext_data *drv = priv;
1659         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1660
1661         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1662                                               enabled);
1663 }
1664
1665
1666 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1667                                    const u8 *psk)
1668 {
1669         struct iw_encode_ext *ext;
1670         struct iwreq iwr;
1671         int ret;
1672
1673         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1674
1675         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1676                 return 0;
1677
1678         if (!psk)
1679                 return 0;
1680
1681         os_memset(&iwr, 0, sizeof(iwr));
1682         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1683
1684         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1685         if (ext == NULL)
1686                 return -1;
1687
1688         iwr.u.encoding.pointer = (caddr_t) ext;
1689         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1690         ext->key_len = PMK_LEN;
1691         os_memcpy(&ext->key, psk, ext->key_len);
1692         ext->alg = IW_ENCODE_ALG_PMK;
1693
1694         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1695         if (ret < 0)
1696                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1697         os_free(ext);
1698
1699         return ret;
1700 }
1701
1702
1703 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1704                                        const u8 *addr, int key_idx,
1705                                        int set_tx, const u8 *seq,
1706                                        size_t seq_len,
1707                                        const u8 *key, size_t key_len)
1708 {
1709         struct wpa_driver_wext_data *drv = priv;
1710         struct iwreq iwr;
1711         int ret = 0;
1712         struct iw_encode_ext *ext;
1713
1714         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1715                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1716                            __FUNCTION__, (unsigned long) seq_len);
1717                 return -1;
1718         }
1719
1720         ext = os_zalloc(sizeof(*ext) + key_len);
1721         if (ext == NULL)
1722                 return -1;
1723         os_memset(&iwr, 0, sizeof(iwr));
1724         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1725         iwr.u.encoding.flags = key_idx + 1;
1726         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1727         if (alg == WPA_ALG_NONE)
1728                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1729         iwr.u.encoding.pointer = (caddr_t) ext;
1730         iwr.u.encoding.length = sizeof(*ext) + key_len;
1731
1732         if (addr == NULL ||
1733             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1734                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1735         if (set_tx)
1736                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1737
1738         ext->addr.sa_family = ARPHRD_ETHER;
1739         if (addr)
1740                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1741         else
1742                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1743         if (key && key_len) {
1744                 os_memcpy(ext + 1, key, key_len);
1745                 ext->key_len = key_len;
1746         }
1747         switch (alg) {
1748         case WPA_ALG_NONE:
1749                 ext->alg = IW_ENCODE_ALG_NONE;
1750                 break;
1751         case WPA_ALG_WEP:
1752                 ext->alg = IW_ENCODE_ALG_WEP;
1753                 break;
1754         case WPA_ALG_TKIP:
1755                 ext->alg = IW_ENCODE_ALG_TKIP;
1756                 break;
1757         case WPA_ALG_CCMP:
1758                 ext->alg = IW_ENCODE_ALG_CCMP;
1759                 break;
1760         case WPA_ALG_PMK:
1761                 ext->alg = IW_ENCODE_ALG_PMK;
1762                 break;
1763 #ifdef CONFIG_IEEE80211W
1764         case WPA_ALG_IGTK:
1765                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1766                 break;
1767 #endif /* CONFIG_IEEE80211W */
1768         default:
1769                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1770                            __FUNCTION__, alg);
1771                 os_free(ext);
1772                 return -1;
1773         }
1774
1775         if (seq && seq_len) {
1776                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1777                 os_memcpy(ext->rx_seq, seq, seq_len);
1778         }
1779
1780         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1781                 ret = errno == EOPNOTSUPP ? -2 : -1;
1782                 if (errno == ENODEV) {
1783                         /*
1784                          * ndiswrapper seems to be returning incorrect error
1785                          * code.. */
1786                         ret = -2;
1787                 }
1788
1789                 perror("ioctl[SIOCSIWENCODEEXT]");
1790         }
1791
1792         os_free(ext);
1793         return ret;
1794 }
1795
1796
1797 /**
1798  * wpa_driver_wext_set_key - Configure encryption key
1799  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1800  * @priv: Private driver interface data
1801  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1802  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1803  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1804  *      broadcast/default keys
1805  * @key_idx: key index (0..3), usually 0 for unicast keys
1806  * @set_tx: Configure this key as the default Tx key (only used when
1807  *      driver does not support separate unicast/individual key
1808  * @seq: Sequence number/packet number, seq_len octets, the next
1809  *      packet number to be used for in replay protection; configured
1810  *      for Rx keys (in most cases, this is only used with broadcast
1811  *      keys and set to zero for unicast keys)
1812  * @seq_len: Length of the seq, depends on the algorithm:
1813  *      TKIP: 6 octets, CCMP: 6 octets
1814  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1815  *      8-byte Rx Mic Key
1816  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1817  *      TKIP: 32, CCMP: 16)
1818  * Returns: 0 on success, -1 on failure
1819  *
1820  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1821  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1822  */
1823 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1824                             const u8 *addr, int key_idx,
1825                             int set_tx, const u8 *seq, size_t seq_len,
1826                             const u8 *key, size_t key_len)
1827 {
1828         struct wpa_driver_wext_data *drv = priv;
1829         struct iwreq iwr;
1830         int ret = 0;
1831
1832         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1833                    "key_len=%lu",
1834                    __FUNCTION__, alg, key_idx, set_tx,
1835                    (unsigned long) seq_len, (unsigned long) key_len);
1836
1837         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1838                                           seq, seq_len, key, key_len);
1839         if (ret == 0)
1840                 return 0;
1841
1842         if (ret == -2 &&
1843             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1844                 wpa_printf(MSG_DEBUG, "Driver did not support "
1845                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1846                 ret = 0;
1847         } else {
1848                 wpa_printf(MSG_DEBUG, "Driver did not support "
1849                            "SIOCSIWENCODEEXT");
1850                 return ret;
1851         }
1852
1853         os_memset(&iwr, 0, sizeof(iwr));
1854         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1855         iwr.u.encoding.flags = key_idx + 1;
1856         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1857         if (alg == WPA_ALG_NONE)
1858                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1859         iwr.u.encoding.pointer = (caddr_t) key;
1860         iwr.u.encoding.length = key_len;
1861
1862         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1863                 perror("ioctl[SIOCSIWENCODE]");
1864                 ret = -1;
1865         }
1866
1867         if (set_tx && alg != WPA_ALG_NONE) {
1868                 os_memset(&iwr, 0, sizeof(iwr));
1869                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1870                 iwr.u.encoding.flags = key_idx + 1;
1871                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1872                 iwr.u.encoding.pointer = (caddr_t) NULL;
1873                 iwr.u.encoding.length = 0;
1874                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1875                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1876                         ret = -1;
1877                 }
1878         }
1879
1880         return ret;
1881 }
1882
1883
1884 static int wpa_driver_wext_set_countermeasures(void *priv,
1885                                                int enabled)
1886 {
1887         struct wpa_driver_wext_data *drv = priv;
1888         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1889         return wpa_driver_wext_set_auth_param(drv,
1890                                               IW_AUTH_TKIP_COUNTERMEASURES,
1891                                               enabled);
1892 }
1893
1894
1895 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1896                                                 int enabled)
1897 {
1898         struct wpa_driver_wext_data *drv = priv;
1899         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1900         drv->use_crypt = enabled;
1901         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1902                                               enabled);
1903 }
1904
1905
1906 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1907                                 const u8 *addr, int cmd, int reason_code)
1908 {
1909         struct iwreq iwr;
1910         struct iw_mlme mlme;
1911         int ret = 0;
1912
1913         os_memset(&iwr, 0, sizeof(iwr));
1914         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1915         os_memset(&mlme, 0, sizeof(mlme));
1916         mlme.cmd = cmd;
1917         mlme.reason_code = reason_code;
1918         mlme.addr.sa_family = ARPHRD_ETHER;
1919         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1920         iwr.u.data.pointer = (caddr_t) &mlme;
1921         iwr.u.data.length = sizeof(mlme);
1922
1923         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1924                 perror("ioctl[SIOCSIWMLME]");
1925                 ret = -1;
1926         }
1927
1928         return ret;
1929 }
1930
1931
1932 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1933 {
1934         struct iwreq iwr;
1935         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1936         u8 ssid[32];
1937         int i;
1938
1939         /*
1940          * Only force-disconnect when the card is in infrastructure mode,
1941          * otherwise the driver might interpret the cleared BSSID and random
1942          * SSID as an attempt to create a new ad-hoc network.
1943          */
1944         os_memset(&iwr, 0, sizeof(iwr));
1945         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1946         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
1947                 perror("ioctl[SIOCGIWMODE]");
1948                 iwr.u.mode = IW_MODE_INFRA;
1949         }
1950
1951         if (iwr.u.mode == IW_MODE_INFRA) {
1952                 /*
1953                  * Clear the BSSID selection and set a random SSID to make sure
1954                  * the driver will not be trying to associate with something
1955                  * even if it does not understand SIOCSIWMLME commands (or
1956                  * tries to associate automatically after deauth/disassoc).
1957                  */
1958                 wpa_driver_wext_set_bssid(drv, null_bssid);
1959
1960                 for (i = 0; i < 32; i++)
1961                         ssid[i] = rand() & 0xFF;
1962                 wpa_driver_wext_set_ssid(drv, ssid, 32);
1963         }
1964 }
1965
1966
1967 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1968                                           int reason_code)
1969 {
1970         struct wpa_driver_wext_data *drv = priv;
1971         int ret;
1972         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1973         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1974         wpa_driver_wext_disconnect(drv);
1975         return ret;
1976 }
1977
1978
1979 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1980                                         int reason_code)
1981 {
1982         struct wpa_driver_wext_data *drv = priv;
1983         int ret;
1984         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1985         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1986         wpa_driver_wext_disconnect(drv);
1987         return ret;
1988 }
1989
1990
1991 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1992                                       size_t ie_len)
1993 {
1994         struct wpa_driver_wext_data *drv = priv;
1995         struct iwreq iwr;
1996         int ret = 0;
1997
1998         os_memset(&iwr, 0, sizeof(iwr));
1999         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2000         iwr.u.data.pointer = (caddr_t) ie;
2001         iwr.u.data.length = ie_len;
2002
2003         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
2004                 perror("ioctl[SIOCSIWGENIE]");
2005                 ret = -1;
2006         }
2007
2008         return ret;
2009 }
2010
2011
2012 int wpa_driver_wext_cipher2wext(int cipher)
2013 {
2014         switch (cipher) {
2015         case CIPHER_NONE:
2016                 return IW_AUTH_CIPHER_NONE;
2017         case CIPHER_WEP40:
2018                 return IW_AUTH_CIPHER_WEP40;
2019         case CIPHER_TKIP:
2020                 return IW_AUTH_CIPHER_TKIP;
2021         case CIPHER_CCMP:
2022                 return IW_AUTH_CIPHER_CCMP;
2023         case CIPHER_WEP104:
2024                 return IW_AUTH_CIPHER_WEP104;
2025         default:
2026                 return 0;
2027         }
2028 }
2029
2030
2031 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2032 {
2033         switch (keymgmt) {
2034         case KEY_MGMT_802_1X:
2035         case KEY_MGMT_802_1X_NO_WPA:
2036                 return IW_AUTH_KEY_MGMT_802_1X;
2037         case KEY_MGMT_PSK:
2038                 return IW_AUTH_KEY_MGMT_PSK;
2039         default:
2040                 return 0;
2041         }
2042 }
2043
2044
2045 static int
2046 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2047                                   struct wpa_driver_associate_params *params)
2048 {
2049         struct iwreq iwr;
2050         int ret = 0;
2051
2052         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2053                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2054
2055         os_memset(&iwr, 0, sizeof(iwr));
2056         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2057         /* Just changing mode, not actual keys */
2058         iwr.u.encoding.flags = 0;
2059         iwr.u.encoding.pointer = (caddr_t) NULL;
2060         iwr.u.encoding.length = 0;
2061
2062         /*
2063          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2064          * different things. Here they are used to indicate Open System vs.
2065          * Shared Key authentication algorithm. However, some drivers may use
2066          * them to select between open/restricted WEP encrypted (open = allow
2067          * both unencrypted and encrypted frames; restricted = only allow
2068          * encrypted frames).
2069          */
2070
2071         if (!drv->use_crypt) {
2072                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2073         } else {
2074                 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2075                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2076                 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2077                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2078         }
2079
2080         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2081                 perror("ioctl[SIOCSIWENCODE]");
2082                 ret = -1;
2083         }
2084
2085         return ret;
2086 }
2087
2088
2089 int wpa_driver_wext_associate(void *priv,
2090                               struct wpa_driver_associate_params *params)
2091 {
2092         struct wpa_driver_wext_data *drv = priv;
2093         int ret = 0;
2094         int allow_unencrypted_eapol;
2095         int value;
2096
2097         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2098
2099         /*
2100          * If the driver did not support SIOCSIWAUTH, fallback to
2101          * SIOCSIWENCODE here.
2102          */
2103         if (drv->auth_alg_fallback &&
2104             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2105                 ret = -1;
2106
2107         if (!params->bssid &&
2108             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2109                 ret = -1;
2110
2111         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2112          * from configuration, not from here, where only the selected suite is
2113          * available */
2114         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2115             < 0)
2116                 ret = -1;
2117         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2118                 value = IW_AUTH_WPA_VERSION_DISABLED;
2119         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2120                 value = IW_AUTH_WPA_VERSION_WPA2;
2121         else
2122                 value = IW_AUTH_WPA_VERSION_WPA;
2123         if (wpa_driver_wext_set_auth_param(drv,
2124                                            IW_AUTH_WPA_VERSION, value) < 0)
2125                 ret = -1;
2126         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2127         if (wpa_driver_wext_set_auth_param(drv,
2128                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2129                 ret = -1;
2130         value = wpa_driver_wext_cipher2wext(params->group_suite);
2131         if (wpa_driver_wext_set_auth_param(drv,
2132                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2133                 ret = -1;
2134         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2135         if (wpa_driver_wext_set_auth_param(drv,
2136                                            IW_AUTH_KEY_MGMT, value) < 0)
2137                 ret = -1;
2138         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2139                 params->pairwise_suite != CIPHER_NONE ||
2140                 params->group_suite != CIPHER_NONE ||
2141                 params->wpa_ie_len;
2142         if (wpa_driver_wext_set_auth_param(drv,
2143                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2144                 ret = -1;
2145
2146         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2147          * not using WPA. IEEE 802.1X specifies that these frames are not
2148          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2149         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2150             params->key_mgmt_suite == KEY_MGMT_PSK)
2151                 allow_unencrypted_eapol = 0;
2152         else
2153                 allow_unencrypted_eapol = 1;
2154
2155         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2156                 ret = -1;
2157         if (wpa_driver_wext_set_auth_param(drv,
2158                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2159                                            allow_unencrypted_eapol) < 0)
2160                 ret = -1;
2161 #ifdef CONFIG_IEEE80211W
2162         switch (params->mgmt_frame_protection) {
2163         case NO_MGMT_FRAME_PROTECTION:
2164                 value = IW_AUTH_MFP_DISABLED;
2165                 break;
2166         case MGMT_FRAME_PROTECTION_OPTIONAL:
2167                 value = IW_AUTH_MFP_OPTIONAL;
2168                 break;
2169         case MGMT_FRAME_PROTECTION_REQUIRED:
2170                 value = IW_AUTH_MFP_REQUIRED;
2171                 break;
2172         };
2173         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2174                 ret = -1;
2175 #endif /* CONFIG_IEEE80211W */
2176         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2177                 ret = -1;
2178         if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2179                 ret = -1;
2180         if (params->bssid &&
2181             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2182                 ret = -1;
2183
2184         return ret;
2185 }
2186
2187
2188 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2189 {
2190         struct wpa_driver_wext_data *drv = priv;
2191         int algs = 0, res;
2192
2193         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2194                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2195         if (auth_alg & AUTH_ALG_SHARED_KEY)
2196                 algs |= IW_AUTH_ALG_SHARED_KEY;
2197         if (auth_alg & AUTH_ALG_LEAP)
2198                 algs |= IW_AUTH_ALG_LEAP;
2199         if (algs == 0) {
2200                 /* at least one algorithm should be set */
2201                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2202         }
2203
2204         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2205                                              algs);
2206         drv->auth_alg_fallback = res == -2;
2207         return res;
2208 }
2209
2210
2211 /**
2212  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2213  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2214  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2215  * Returns: 0 on success, -1 on failure
2216  */
2217 int wpa_driver_wext_set_mode(void *priv, int mode)
2218 {
2219         struct wpa_driver_wext_data *drv = priv;
2220         struct iwreq iwr;
2221         int ret = -1, flags;
2222         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2223
2224         os_memset(&iwr, 0, sizeof(iwr));
2225         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2226         iwr.u.mode = new_mode;
2227         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2228                 ret = 0;
2229                 goto done;
2230         }
2231
2232         if (errno != EBUSY) {
2233                 perror("ioctl[SIOCSIWMODE]");
2234                 goto done;
2235         }
2236
2237         /* mac80211 doesn't allow mode changes while the device is up, so if
2238          * the device isn't in the mode we're about to change to, take device
2239          * down, try to set the mode again, and bring it back up.
2240          */
2241         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2242                 perror("ioctl[SIOCGIWMODE]");
2243                 goto done;
2244         }
2245
2246         if (iwr.u.mode == new_mode) {
2247                 ret = 0;
2248                 goto done;
2249         }
2250
2251         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2252                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2253
2254                 /* Try to set the mode again while the interface is down */
2255                 iwr.u.mode = new_mode;
2256                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2257                         perror("ioctl[SIOCSIWMODE]");
2258                 else
2259                         ret = 0;
2260
2261                 /* Ignore return value of get_ifflags to ensure that the device
2262                  * is always up like it was before this function was called.
2263                  */
2264                 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2265                 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2266         }
2267
2268 done:
2269         return ret;
2270 }
2271
2272
2273 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2274                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2275 {
2276         struct iwreq iwr;
2277         struct iw_pmksa pmksa;
2278         int ret = 0;
2279
2280         os_memset(&iwr, 0, sizeof(iwr));
2281         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2282         os_memset(&pmksa, 0, sizeof(pmksa));
2283         pmksa.cmd = cmd;
2284         pmksa.bssid.sa_family = ARPHRD_ETHER;
2285         if (bssid)
2286                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2287         if (pmkid)
2288                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2289         iwr.u.data.pointer = (caddr_t) &pmksa;
2290         iwr.u.data.length = sizeof(pmksa);
2291
2292         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2293                 if (errno != EOPNOTSUPP)
2294                         perror("ioctl[SIOCSIWPMKSA]");
2295                 ret = -1;
2296         }
2297
2298         return ret;
2299 }
2300
2301
2302 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2303                                      const u8 *pmkid)
2304 {
2305         struct wpa_driver_wext_data *drv = priv;
2306         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2307 }
2308
2309
2310 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2311                                         const u8 *pmkid)
2312 {
2313         struct wpa_driver_wext_data *drv = priv;
2314         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2315 }
2316
2317
2318 static int wpa_driver_wext_flush_pmkid(void *priv)
2319 {
2320         struct wpa_driver_wext_data *drv = priv;
2321         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2322 }
2323
2324
2325 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2326 {
2327         struct wpa_driver_wext_data *drv = priv;
2328         if (!drv->has_capability)
2329                 return -1;
2330         os_memcpy(capa, &drv->capa, sizeof(*capa));
2331         return 0;
2332 }
2333
2334
2335 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2336                                         const char *ifname)
2337 {
2338         if (ifname == NULL) {
2339                 drv->ifindex2 = -1;
2340                 return 0;
2341         }
2342
2343         drv->ifindex2 = if_nametoindex(ifname);
2344         if (drv->ifindex2 <= 0)
2345                 return -1;
2346
2347         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2348                    "wireless events", drv->ifindex2, ifname);
2349
2350         return 0;
2351 }
2352
2353
2354 int wpa_driver_wext_set_operstate(void *priv, int state)
2355 {
2356         struct wpa_driver_wext_data *drv = priv;
2357
2358         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2359                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2360         drv->operstate = state;
2361         return wpa_driver_wext_send_oper_ifla(
2362                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2363 }
2364
2365
2366 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2367 {
2368         return drv->we_version_compiled;
2369 }
2370
2371
2372 const struct wpa_driver_ops wpa_driver_wext_ops = {
2373         .name = "wext",
2374         .desc = "Linux wireless extensions (generic)",
2375         .get_bssid = wpa_driver_wext_get_bssid,
2376         .get_ssid = wpa_driver_wext_get_ssid,
2377         .set_wpa = wpa_driver_wext_set_wpa,
2378         .set_key = wpa_driver_wext_set_key,
2379         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2380         .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2381         .scan = wpa_driver_wext_scan,
2382         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2383         .deauthenticate = wpa_driver_wext_deauthenticate,
2384         .disassociate = wpa_driver_wext_disassociate,
2385         .set_mode = wpa_driver_wext_set_mode,
2386         .associate = wpa_driver_wext_associate,
2387         .set_auth_alg = wpa_driver_wext_set_auth_alg,
2388         .init = wpa_driver_wext_init,
2389         .deinit = wpa_driver_wext_deinit,
2390         .add_pmkid = wpa_driver_wext_add_pmkid,
2391         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2392         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2393         .get_capa = wpa_driver_wext_get_capa,
2394         .set_operstate = wpa_driver_wext_set_operstate,
2395 };