vcs.maemo.org Git - wpasupplicant/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
  39
  40 static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
  41                                           int linkmode, int operstate)
  42 {
  43         struct {
  44                 struct nlmsghdr hdr;
  45                 struct ifinfomsg ifinfo;
  46                 char opts[16];
  47         } req;
  48         struct rtattr *rta;
  49         static int nl_seq;
  50         ssize_t ret;
  51
  52         os_memset(&req, 0, sizeof(req));
  53
  54         req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
  55         req.hdr.nlmsg_type = RTM_SETLINK;
  56         req.hdr.nlmsg_flags = NLM_F_REQUEST;
  57         req.hdr.nlmsg_seq = ++nl_seq;
  58         req.hdr.nlmsg_pid = 0;
  59
  60         req.ifinfo.ifi_family = AF_UNSPEC;
  61         req.ifinfo.ifi_type = 0;
  62         req.ifinfo.ifi_index = drv->ifindex;
  63         req.ifinfo.ifi_flags = 0;
  64         req.ifinfo.ifi_change = 0;
  65
  66         if (linkmode != -1) {
  67                 rta = (struct rtattr *)
  68                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
  69                 rta->rta_type = IFLA_LINKMODE;
  70                 rta->rta_len = RTA_LENGTH(sizeof(char));
  71                 *((char *) RTA_DATA(rta)) = linkmode;
  72                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  73                         RTA_LENGTH(sizeof(char));
  74         }
  75         if (operstate != -1) {
  76                 rta = (struct rtattr *)
  77                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
  78                 rta->rta_type = IFLA_OPERSTATE;
  79                 rta->rta_len = RTA_LENGTH(sizeof(char));
  80                 *((char *) RTA_DATA(rta)) = operstate;
  81                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
  82                         RTA_LENGTH(sizeof(char));
  83         }
  84
  85         wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
  86                    linkmode, operstate);
  87
  88         ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0);
  89         if (ret < 0) {
  90                 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
  91                            "%s (assume operstate is not supported)",
  92                            strerror(errno));
  93         }
  94
  95         return ret < 0 ? -1 : 0;
  96 }
  97
  98
  99 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
 100                                    int idx, u32 value)
 101 {
 102         struct iwreq iwr;
 103         int ret = 0;
 104
 105         os_memset(&iwr, 0, sizeof(iwr));
 106         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 107         iwr.u.param.flags = idx & IW_AUTH_INDEX;
 108         iwr.u.param.value = value;
 109
 110         if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
 111                 if (errno != EOPNOTSUPP) {
 112                         wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
 113                                    "value 0x%x) failed: %s)",
 114                                    idx, value, strerror(errno));
 115                 }
 116                 ret = errno == EOPNOTSUPP ? -2 : -1;
 117         }
 118
 119         return ret;
 120 }
 121
 122
 123 /**
 124  * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
 125  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 126  * @bssid: Buffer for BSSID
 127  * Returns: 0 on success, -1 on failure
 128  */
 129 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
 130 {
 131         struct wpa_driver_wext_data *drv = priv;
 132         struct iwreq iwr;
 133         int ret = 0;
 134
 135         os_memset(&iwr, 0, sizeof(iwr));
 136         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 137
 138         if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
 139                 perror("ioctl[SIOCGIWAP]");
 140                 ret = -1;
 141         }
 142         os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
 143
 144         return ret;
 145 }
 146
 147
 148 /**
 149  * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
 150  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 151  * @bssid: BSSID
 152  * Returns: 0 on success, -1 on failure
 153  */
 154 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
 155 {
 156         struct wpa_driver_wext_data *drv = priv;
 157         struct iwreq iwr;
 158         int ret = 0;
 159
 160         os_memset(&iwr, 0, sizeof(iwr));
 161         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 162         iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
 163         if (bssid)
 164                 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
 165         else
 166                 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
 167
 168         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
 169                 perror("ioctl[SIOCSIWAP]");
 170                 ret = -1;
 171         }
 172
 173         return ret;
 174 }
 175
 176
 177 /**
 178  * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
 179  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 180  * @ssid: Buffer for the SSID; must be at least 32 bytes long
 181  * Returns: SSID length on success, -1 on failure
 182  */
 183 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
 184 {
 185         struct wpa_driver_wext_data *drv = priv;
 186         struct iwreq iwr;
 187         int ret = 0;
 188
 189         os_memset(&iwr, 0, sizeof(iwr));
 190         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 191         iwr.u.essid.pointer = (caddr_t) ssid;
 192         iwr.u.essid.length = 32;
 193
 194         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
 195                 perror("ioctl[SIOCGIWESSID]");
 196                 ret = -1;
 197         } else {
 198                 ret = iwr.u.essid.length;
 199                 if (ret > 32)
 200                         ret = 32;
 201                 /* Some drivers include nul termination in the SSID, so let's
 202                  * remove it here before further processing. WE-21 changes this
 203                  * to explicitly require the length _not_ to include nul
 204                  * termination. */
 205                 if (ret > 0 && ssid[ret - 1] == '\0' &&
 206                     drv->we_version_compiled < 21)
 207                         ret--;
 208         }
 209
 210         return ret;
 211 }
 212
 213
 214 /**
 215  * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
 216  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 217  * @ssid: SSID
 218  * @ssid_len: Length of SSID (0..32)
 219  * Returns: 0 on success, -1 on failure
 220  */
 221 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
 222 {
 223         struct wpa_driver_wext_data *drv = priv;
 224         struct iwreq iwr;
 225         int ret = 0;
 226         char buf[33];
 227
 228         if (ssid_len > 32)
 229                 return -1;
 230
 231         os_memset(&iwr, 0, sizeof(iwr));
 232         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 233         /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
 234         iwr.u.essid.flags = (ssid_len != 0);
 235         os_memset(buf, 0, sizeof(buf));
 236         os_memcpy(buf, ssid, ssid_len);
 237         iwr.u.essid.pointer = (caddr_t) buf;
 238         if (drv->we_version_compiled < 21) {
 239                 /* For historic reasons, set SSID length to include one extra
 240                  * character, C string nul termination, even though SSID is
 241                  * really an octet string that should not be presented as a C
 242                  * string. Some Linux drivers decrement the length by one and
 243                  * can thus end up missing the last octet of the SSID if the
 244                  * length is not incremented here. WE-21 changes this to
 245                  * explicitly require the length _not_ to include nul
 246                  * termination. */
 247                 if (ssid_len)
 248                         ssid_len++;
 249         }
 250         iwr.u.essid.length = ssid_len;
 251
 252         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
 253                 perror("ioctl[SIOCSIWESSID]");
 254                 ret = -1;
 255         }
 256
 257         return ret;
 258 }
 259
 260
 261 /**
 262  * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
 263  * @priv: Pointer to private wext data from wpa_driver_wext_init()
 264  * @freq: Frequency in MHz
 265  * Returns: 0 on success, -1 on failure
 266  */
 267 int wpa_driver_wext_set_freq(void *priv, int freq)
 268 {
 269         struct wpa_driver_wext_data *drv = priv;
 270         struct iwreq iwr;
 271         int ret = 0;
 272
 273         os_memset(&iwr, 0, sizeof(iwr));
 274         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 275         iwr.u.freq.m = freq * 100000;
 276         iwr.u.freq.e = 1;
 277
 278         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 279                 perror("ioctl[SIOCSIWFREQ]");
 280                 ret = -1;
 281         }
 282
 283         return ret;
 284 }
 285
 286
 287 static void
 288 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
 289 {
 290         union wpa_event_data data;
 291
 292         wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
 293                    custom);
 294
 295         os_memset(&data, 0, sizeof(data));
 296         /* Host AP driver */
 297         if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 298                 data.michael_mic_failure.unicast =
 299                         os_strstr(custom, " unicast ") != NULL;
 300                 /* TODO: parse parameters(?) */
 301                 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 302         } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
 303                 char *spos;
 304                 int bytes;
 305
 306                 spos = custom + 17;
 307
 308                 bytes = strspn(spos, "0123456789abcdefABCDEF");
 309                 if (!bytes || (bytes & 1))
 310                         return;
 311                 bytes /= 2;
 312
 313                 data.assoc_info.req_ies = os_malloc(bytes);
 314                 if (data.assoc_info.req_ies == NULL)
 315                         return;
 316
 317                 data.assoc_info.req_ies_len = bytes;
 318                 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
 319
 320                 spos += bytes * 2;
 321
 322                 data.assoc_info.resp_ies = NULL;
 323                 data.assoc_info.resp_ies_len = 0;
 324
 325                 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
 326                         spos += 9;
 327
 328                         bytes = strspn(spos, "0123456789abcdefABCDEF");
 329                         if (!bytes || (bytes & 1))
 330                                 goto done;
 331                         bytes /= 2;
 332
 333                         data.assoc_info.resp_ies = os_malloc(bytes);
 334                         if (data.assoc_info.resp_ies == NULL)
 335                                 goto done;
 336
 337                         data.assoc_info.resp_ies_len = bytes;
 338                         hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
 339                 }
 340
 341                 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
 342
 343         done:
 344                 os_free(data.assoc_info.resp_ies);
 345                 os_free(data.assoc_info.req_ies);
 346 #ifdef CONFIG_PEERKEY
 347         } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
 348                 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
 349                         wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
 350                                    "STKSTART.request '%s'", custom + 17);
 351                         return;
 352                 }
 353                 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
 354 #endif /* CONFIG_PEERKEY */
 355         }
 356 }
 357
 358
 359 static int wpa_driver_wext_event_wireless_michaelmicfailure(
 360         void *ctx, const char *ev, size_t len)
 361 {
 362         const struct iw_michaelmicfailure *mic;
 363         union wpa_event_data data;
 364
 365         if (len < sizeof(*mic))
 366                 return -1;
 367
 368         mic = (const struct iw_michaelmicfailure *) ev;
 369
 370         wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
 371                    "flags=0x%x src_addr=" MACSTR, mic->flags,
 372                    MAC2STR(mic->src_addr.sa_data));
 373
 374         os_memset(&data, 0, sizeof(data));
 375         data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
 376         wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 377
 378         return 0;
 379 }
 380
 381
 382 static int wpa_driver_wext_event_wireless_pmkidcand(
 383         struct wpa_driver_wext_data *drv, const char *ev, size_t len)
 384 {
 385         const struct iw_pmkid_cand *cand;
 386         union wpa_event_data data;
 387         const u8 *addr;
 388
 389         if (len < sizeof(*cand))
 390                 return -1;
 391
 392         cand = (const struct iw_pmkid_cand *) ev;
 393         addr = (const u8 *) cand->bssid.sa_data;
 394
 395         wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
 396                    "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
 397                    cand->index, MAC2STR(addr));
 398
 399         os_memset(&data, 0, sizeof(data));
 400         os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
 401         data.pmkid_candidate.index = cand->index;
 402         data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
 403         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
 404
 405         return 0;
 406 }
 407
 408
 409 static int wpa_driver_wext_event_wireless_assocreqie(
 410         struct wpa_driver_wext_data *drv, const char *ev, int len)
 411 {
 412         if (len < 0)
 413                 return -1;
 414
 415         wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
 416                     len);
 417         os_free(drv->assoc_req_ies);
 418         drv->assoc_req_ies = os_malloc(len);
 419         if (drv->assoc_req_ies == NULL) {
 420                 drv->assoc_req_ies_len = 0;
 421                 return -1;
 422         }
 423         os_memcpy(drv->assoc_req_ies, ev, len);
 424         drv->assoc_req_ies_len = len;
 425
 426         return 0;
 427 }
 428
 429
 430 static int wpa_driver_wext_event_wireless_assocrespie(
 431         struct wpa_driver_wext_data *drv, const char *ev, int len)
 432 {
 433         if (len < 0)
 434                 return -1;
 435
 436         wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
 437                     len);
 438         os_free(drv->assoc_resp_ies);
 439         drv->assoc_resp_ies = os_malloc(len);
 440         if (drv->assoc_resp_ies == NULL) {
 441                 drv->assoc_resp_ies_len = 0;
 442                 return -1;
 443         }
 444         os_memcpy(drv->assoc_resp_ies, ev, len);
 445         drv->assoc_resp_ies_len = len;
 446
 447         return 0;
 448 }
 449
 450
 451 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
 452 {
 453         union wpa_event_data data;
 454
 455         if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
 456                 return;
 457
 458         os_memset(&data, 0, sizeof(data));
 459         if (drv->assoc_req_ies) {
 460                 data.assoc_info.req_ies = drv->assoc_req_ies;
 461                 drv->assoc_req_ies = NULL;
 462                 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
 463         }
 464         if (drv->assoc_resp_ies) {
 465                 data.assoc_info.resp_ies = drv->assoc_resp_ies;
 466                 drv->assoc_resp_ies = NULL;
 467                 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
 468         }
 469
 470         wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
 471
 472         os_free(data.assoc_info.req_ies);
 473         os_free(data.assoc_info.resp_ies);
 474 }
 475
 476
 477 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
 478                                            void *ctx, char *data, int len)
 479 {
 480         struct iw_event iwe_buf, *iwe = &iwe_buf;
 481         char *pos, *end, *custom, *buf;
 482
 483         pos = data;
 484         end = data + len;
 485
 486         while (pos + IW_EV_LCP_LEN <= end) {
 487                 /* Event data may be unaligned, so make a local, aligned copy
 488                  * before processing. */
 489                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 490                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
 491                            iwe->cmd, iwe->len);
 492                 if (iwe->len <= IW_EV_LCP_LEN)
 493                         return;
 494
 495                 custom = pos + IW_EV_POINT_LEN;
 496                 if (drv->we_version_compiled > 18 &&
 497                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 498                      iwe->cmd == IWEVCUSTOM ||
 499                      iwe->cmd == IWEVASSOCREQIE ||
 500                      iwe->cmd == IWEVASSOCRESPIE ||
 501                      iwe->cmd == IWEVPMKIDCAND)) {
 502                         /* WE-19 removed the pointer from struct iw_point */
 503                         char *dpos = (char *) &iwe_buf.u.data.length;
 504                         int dlen = dpos - (char *) &iwe_buf;
 505                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
 506                                   sizeof(struct iw_event) - dlen);
 507                 } else {
 508                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 509                         custom += IW_EV_POINT_OFF;
 510                 }
 511
 512                 switch (iwe->cmd) {
 513                 case SIOCGIWAP:
 514                         wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
 515                                    MACSTR,
 516                                    MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
 517                         if (is_zero_ether_addr(
 518                                     (const u8 *) iwe->u.ap_addr.sa_data) ||
 519                             os_memcmp(iwe->u.ap_addr.sa_data,
 520                                       "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
 521                             0) {
 522                                 os_free(drv->assoc_req_ies);
 523                                 drv->assoc_req_ies = NULL;
 524                                 os_free(drv->assoc_resp_ies);
 525                                 drv->assoc_resp_ies = NULL;
 526                                 wpa_supplicant_event(ctx, EVENT_DISASSOC,
 527                                                      NULL);
 528
 529                         } else {
 530                                 wpa_driver_wext_event_assoc_ies(drv);
 531                                 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
 532                         }
 533                         break;
 534                 case IWEVMICHAELMICFAILURE:
 535                         if (custom + iwe->u.data.length > end) {
 536                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 537                                            "IWEVMICHAELMICFAILURE length");
 538                                 return;
 539                         }
 540                         wpa_driver_wext_event_wireless_michaelmicfailure(
 541                                 ctx, custom, iwe->u.data.length);
 542                         break;
 543                 case IWEVCUSTOM:
 544                         if (custom + iwe->u.data.length > end) {
 545                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 546                                            "IWEVCUSTOM length");
 547                                 return;
 548                         }
 549                         buf = os_malloc(iwe->u.data.length + 1);
 550                         if (buf == NULL)
 551                                 return;
 552                         os_memcpy(buf, custom, iwe->u.data.length);
 553                         buf[iwe->u.data.length] = '\0';
 554                         wpa_driver_wext_event_wireless_custom(ctx, buf);
 555                         os_free(buf);
 556                         break;
 557                 case SIOCGIWSCAN:
 558                         drv->scan_complete_events = 1;
 559                         eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
 560                                              drv, ctx);
 561                         wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
 562                         break;
 563                 case IWEVASSOCREQIE:
 564                         if (custom + iwe->u.data.length > end) {
 565                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 566                                            "IWEVASSOCREQIE length");
 567                                 return;
 568                         }
 569                         wpa_driver_wext_event_wireless_assocreqie(
 570                                 drv, custom, iwe->u.data.length);
 571                         break;
 572                 case IWEVASSOCRESPIE:
 573                         if (custom + iwe->u.data.length > end) {
 574                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 575                                            "IWEVASSOCRESPIE length");
 576                                 return;
 577                         }
 578                         wpa_driver_wext_event_wireless_assocrespie(
 579                                 drv, custom, iwe->u.data.length);
 580                         break;
 581                 case IWEVPMKIDCAND:
 582                         if (custom + iwe->u.data.length > end) {
 583                                 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
 584                                            "IWEVPMKIDCAND length");
 585                                 return;
 586                         }
 587                         wpa_driver_wext_event_wireless_pmkidcand(
 588                                 drv, custom, iwe->u.data.length);
 589                         break;
 590                 }
 591
 592                 pos += iwe->len;
 593         }
 594 }
 595
 596
 597 static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
 598                                        void *ctx, char *buf, size_t len,
 599                                        int del)
 600 {
 601         union wpa_event_data event;
 602
 603         os_memset(&event, 0, sizeof(event));
 604         if (len > sizeof(event.interface_status.ifname))
 605                 len = sizeof(event.interface_status.ifname) - 1;
 606         os_memcpy(event.interface_status.ifname, buf, len);
 607         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 608                 EVENT_INTERFACE_ADDED;
 609
 610         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 611                    del ? "DEL" : "NEW",
 612                    event.interface_status.ifname,
 613                    del ? "removed" : "added");
 614
 615         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 616                 if (del)
 617                         drv->if_removed = 1;
 618                 else
 619                         drv->if_removed = 0;
 620         }
 621
 622         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
 623 }
 624
 625
 626 static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
 627                                       struct nlmsghdr *h)
 628 {
 629         struct ifinfomsg *ifi;
 630         int attrlen, nlmsg_len, rta_len;
 631         struct rtattr *attr;
 632
 633         ifi = NLMSG_DATA(h);
 634
 635         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 636
 637         attrlen = h->nlmsg_len - nlmsg_len;
 638         if (attrlen < 0)
 639                 return 0;
 640
 641         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 642
 643         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 644         while (RTA_OK(attr, attrlen)) {
 645                 if (attr->rta_type == IFLA_IFNAME) {
 646                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 647                             == 0)
 648                                 return 1;
 649                         else
 650                                 break;
 651                 }
 652                 attr = RTA_NEXT(attr, attrlen);
 653         }
 654
 655         return 0;
 656 }
 657
 658
 659 static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
 660                                        int ifindex, struct nlmsghdr *h)
 661 {
 662         if (drv->ifindex == ifindex || drv->ifindex2 == ifindex)
 663                 return 1;
 664
 665         if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
 666                 drv->ifindex = if_nametoindex(drv->ifname);
 667                 wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
 668                            "interface");
 669                 wpa_driver_wext_finish_drv_init(drv);
 670                 return 1;
 671         }
 672
 673         return 0;
 674 }
 675
 676
 677 static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
 678                                               void *ctx, struct nlmsghdr *h,
 679                                               size_t len)
 680 {
 681         struct ifinfomsg *ifi;
 682         int attrlen, nlmsg_len, rta_len;
 683         struct rtattr * attr;
 684
 685         if (len < sizeof(*ifi))
 686                 return;
 687
 688         ifi = NLMSG_DATA(h);
 689
 690         if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
 691                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 692                            ifi->ifi_index);
 693                 return;
 694         }
 695
 696         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 697                    "(%s%s%s%s)",
 698                    drv->operstate, ifi->ifi_flags,
 699                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 700                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 701                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 702                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 703         /*
 704          * Some drivers send the association event before the operup event--in
 705          * this case, lifting operstate in wpa_driver_wext_set_operstate()
 706          * fails. This will hit us when wpa_supplicant does not need to do
 707          * IEEE 802.1X authentication
 708          */
 709         if (drv->operstate == 1 &&
 710             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 711             !(ifi->ifi_flags & IFF_RUNNING))
 712                 wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
 713
 714         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 715
 716         attrlen = h->nlmsg_len - nlmsg_len;
 717         if (attrlen < 0)
 718                 return;
 719
 720         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 721
 722         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 723         while (RTA_OK(attr, attrlen)) {
 724                 if (attr->rta_type == IFLA_WIRELESS) {
 725                         wpa_driver_wext_event_wireless(
 726                                 drv, ctx, ((char *) attr) + rta_len,
 727                                 attr->rta_len - rta_len);
 728                 } else if (attr->rta_type == IFLA_IFNAME) {
 729                         wpa_driver_wext_event_link(drv, ctx,
 730                                                    ((char *) attr) + rta_len,
 731                                                    attr->rta_len - rta_len, 0);
 732                 }
 733                 attr = RTA_NEXT(attr, attrlen);
 734         }
 735 }
 736
 737
 738 static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
 739                                               void *ctx, struct nlmsghdr *h,
 740                                               size_t len)
 741 {
 742         struct ifinfomsg *ifi;
 743         int attrlen, nlmsg_len, rta_len;
 744         struct rtattr * attr;
 745
 746         if (len < sizeof(*ifi))
 747                 return;
 748
 749         ifi = NLMSG_DATA(h);
 750
 751         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 752
 753         attrlen = h->nlmsg_len - nlmsg_len;
 754         if (attrlen < 0)
 755                 return;
 756
 757         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 758
 759         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 760         while (RTA_OK(attr, attrlen)) {
 761                 if (attr->rta_type == IFLA_IFNAME) {
 762                         wpa_driver_wext_event_link(drv,  ctx,
 763                                                    ((char *) attr) + rta_len,
 764                                                    attr->rta_len - rta_len, 1);
 765                 }
 766                 attr = RTA_NEXT(attr, attrlen);
 767         }
 768 }
 769
 770
 771 static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
 772                                           void *sock_ctx)
 773 {
 774         char buf[8192];
 775         int left;
 776         struct sockaddr_nl from;
 777         socklen_t fromlen;
 778         struct nlmsghdr *h;
 779         int max_events = 10;
 780
 781 try_again:
 782         fromlen = sizeof(from);
 783         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
 784                         (struct sockaddr *) &from, &fromlen);
 785         if (left < 0) {
 786                 if (errno != EINTR && errno != EAGAIN)
 787                         perror("recvfrom(netlink)");
 788                 return;
 789         }
 790
 791         h = (struct nlmsghdr *) buf;
 792         while (left >= (int) sizeof(*h)) {
 793                 int len, plen;
 794
 795                 len = h->nlmsg_len;
 796                 plen = len - sizeof(*h);
 797                 if (len > left || plen < 0) {
 798                         wpa_printf(MSG_DEBUG, "Malformed netlink message: "
 799                                    "len=%d left=%d plen=%d",
 800                                    len, left, plen);
 801                         break;
 802                 }
 803
 804                 switch (h->nlmsg_type) {
 805                 case RTM_NEWLINK:
 806                         wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
 807                                                           h, plen);
 808                         break;
 809                 case RTM_DELLINK:
 810                         wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
 811                                                           h, plen);
 812                         break;
 813                 }
 814
 815                 len = NLMSG_ALIGN(len);
 816                 left -= len;
 817                 h = (struct nlmsghdr *) ((char *) h + len);
 818         }
 819
 820         if (left > 0) {
 821                 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
 822                            "message", left);
 823         }
 824
 825         if (--max_events > 0) {
 826                 /*
 827                  * Try to receive all events in one eloop call in order to
 828                  * limit race condition on cases where AssocInfo event, Assoc
 829                  * event, and EAPOL frames are received more or less at the
 830                  * same time. We want to process the event messages first
 831                  * before starting EAPOL processing.
 832                  */
 833                 goto try_again;
 834         }
 835 }
 836
 837
 838 static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
 839                                               const char *ifname, int *flags)
 840 {
 841         struct ifreq ifr;
 842
 843         os_memset(&ifr, 0, sizeof(ifr));
 844         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 845         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
 846                 perror("ioctl[SIOCGIFFLAGS]");
 847                 return -1;
 848         }
 849         *flags = ifr.ifr_flags & 0xffff;
 850         return 0;
 851 }
 852
 853
 854 /**
 855  * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS)
 856  * @drv: driver_wext private data
 857  * @flags: Pointer to returned flags value
 858  * Returns: 0 on success, -1 on failure
 859  */
 860 int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags)
 861 {
 862         return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags);
 863 }
 864
 865
 866 static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv,
 867                                               const char *ifname, int flags)
 868 {
 869         struct ifreq ifr;
 870
 871         os_memset(&ifr, 0, sizeof(ifr));
 872         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 873         ifr.ifr_flags = flags & 0xffff;
 874         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
 875                 perror("SIOCSIFFLAGS");
 876                 return -1;
 877         }
 878         return 0;
 879 }
 880
 881
 882 /**
 883  * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS)
 884  * @drv: driver_wext private data
 885  * @flags: New value for flags
 886  * Returns: 0 on success, -1 on failure
 887  */
 888 int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags)
 889 {
 890         return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags);
 891 }
 892
 893
 894 /**
 895  * wpa_driver_wext_init - Initialize WE driver interface
 896  * @ctx: context to be used when calling wpa_supplicant functions,
 897  * e.g., wpa_supplicant_event()
 898  * @ifname: interface name, e.g., wlan0
 899  * Returns: Pointer to private data, %NULL on failure
 900  */
 901 void * wpa_driver_wext_init(void *ctx, const char *ifname)
 902 {
 903         int s;
 904         struct sockaddr_nl local;
 905         struct wpa_driver_wext_data *drv;
 906
 907         drv = os_zalloc(sizeof(*drv));
 908         if (drv == NULL)
 909                 return NULL;
 910         drv->ctx = ctx;
 911         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
 912
 913         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
 914         if (drv->ioctl_sock < 0) {
 915                 perror("socket(PF_INET,SOCK_DGRAM)");
 916                 goto err1;
 917         }
 918
 919         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
 920         if (s < 0) {
 921                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
 922                 goto err2;
 923         }
 924         drv->event_sock = s;
 925
 926         os_memset(&local, 0, sizeof(local));
 927         local.nl_family = AF_NETLINK;
 928         local.nl_groups = RTMGRP_LINK;
 929         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
 930                 perror("bind(netlink)");
 931                 goto err3;
 932         }
 933
 934         eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
 935
 936         drv->mlme_sock = -1;
 937
 938         if (wpa_driver_wext_finish_drv_init(drv) < 0)
 939                 goto err4;
 940
 941         return drv;
 942
 943 err4:
 944         eloop_unregister_read_sock(drv->event_sock);
 945 err3:
 946         close(drv->event_sock);
 947 err2:
 948         close(drv->ioctl_sock);
 949 err1:
 950         os_free(drv);
 951         return NULL;
 952 }
 953
 954
 955 static int wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
 956 {
 957         int flags;
 958
 959         if (wpa_driver_wext_get_ifflags(drv, &flags) != 0) {
 960                 wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
 961                            drv->ifname);
 962                 return -1;
 963         }
 964
 965         if (!(flags & IFF_UP)) {
 966                 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
 967                         wpa_printf(MSG_ERROR, "Could not set interface '%s' "
 968                                    "UP", drv->ifname);
 969                         return -1;
 970                 } else {
 971                         /*
 972                          * Wait some time to allow driver to initialize before
 973                          * starting configuring the driver. This seems to be
 974                          * needed at least some drivers that load firmware etc.
 975                          * when the interface is set up.
 976                          */
 977                         wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
 978                                    "a second for the driver to complete "
 979                                    "initialization", drv->ifname);
 980                         sleep(1);
 981                 }
 982         }
 983
 984         /*
 985          * Make sure that the driver does not have any obsolete PMKID entries.
 986          */
 987         wpa_driver_wext_flush_pmkid(drv);
 988
 989         if (wpa_driver_wext_set_mode(drv, 0) < 0) {
 990                 wpa_printf(MSG_DEBUG, "Could not configure driver to use "
 991                            "managed mode");
 992                 /* Try to use it anyway */
 993         }
 994
 995         wpa_driver_wext_get_range(drv);
 996
 997         drv->ifindex = if_nametoindex(drv->ifname);
 998
 999         if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
1000                 /*
1001                  * Host AP driver may use both wlan# and wifi# interface in
1002                  * wireless events. Since some of the versions included WE-18
1003                  * support, let's add the alternative ifindex also from
1004                  * driver_wext.c for the time being. This may be removed at
1005                  * some point once it is believed that old versions of the
1006                  * driver are not in use anymore.
1007                  */
1008                 char ifname2[IFNAMSIZ + 1];
1009                 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
1010                 os_memcpy(ifname2, "wifi", 4);
1011                 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1012         }
1013
1014         wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1015
1016         return 0;
1017 }
1018
1019
1020 /**
1021  * wpa_driver_wext_deinit - Deinitialize WE driver interface
1022  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1023  *
1024  * Shut down driver interface and processing of driver events. Free
1025  * private data buffer if one was allocated in wpa_driver_wext_init().
1026  */
1027 void wpa_driver_wext_deinit(void *priv)
1028 {
1029         struct wpa_driver_wext_data *drv = priv;
1030         int flags;
1031
1032         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1033
1034         /*
1035          * Clear possibly configured driver parameters in order to make it
1036          * easier to use the driver after wpa_supplicant has been terminated.
1037          */
1038         (void) wpa_driver_wext_set_bssid(drv,
1039                                          (u8 *) "\x00\x00\x00\x00\x00\x00");
1040
1041         wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1042
1043         eloop_unregister_read_sock(drv->event_sock);
1044         if (drv->mlme_sock >= 0)
1045                 eloop_unregister_read_sock(drv->mlme_sock);
1046
1047         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1048                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1049
1050         close(drv->event_sock);
1051         close(drv->ioctl_sock);
1052         if (drv->mlme_sock >= 0)
1053                 close(drv->mlme_sock);
1054         os_free(drv->assoc_req_ies);
1055         os_free(drv->assoc_resp_ies);
1056         os_free(drv);
1057 }
1058
1059
1060 /**
1061  * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1062  * @eloop_ctx: Unused
1063  * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1064  *
1065  * This function can be used as registered timeout when starting a scan to
1066  * generate a scan completed event if the driver does not report this.
1067  */
1068 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1069 {
1070         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1071         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1072 }
1073
1074
1075 /**
1076  * wpa_driver_wext_scan - Request the driver to initiate scan
1077  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1078  * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
1079  *      all SSIDs (either active scan with wildcard SSID or passive
1080  *      scan)
1081  * @ssid_len: Length of the SSID
1082  * Returns: 0 on success, -1 on failure
1083  */
1084 int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len)
1085 {
1086         struct wpa_driver_wext_data *drv = priv;
1087         struct iwreq iwr;
1088         int ret = 0, timeout;
1089         struct iw_scan_req req;
1090
1091         if (ssid_len > IW_ESSID_MAX_SIZE) {
1092                 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1093                            __FUNCTION__, (unsigned long) ssid_len);
1094                 return -1;
1095         }
1096
1097         os_memset(&iwr, 0, sizeof(iwr));
1098         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1099
1100         if (ssid && ssid_len) {
1101                 os_memset(&req, 0, sizeof(req));
1102                 req.essid_len = ssid_len;
1103                 req.bssid.sa_family = ARPHRD_ETHER;
1104                 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1105                 os_memcpy(req.essid, ssid, ssid_len);
1106                 iwr.u.data.pointer = (caddr_t) &req;
1107                 iwr.u.data.length = sizeof(req);
1108                 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1109         }
1110
1111         if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1112                 perror("ioctl[SIOCSIWSCAN]");
1113                 ret = -1;
1114         }
1115
1116         /* Not all drivers generate "scan completed" wireless event, so try to
1117          * read results after a timeout. */
1118         timeout = 5;
1119         if (drv->scan_complete_events) {
1120                 /*
1121                  * The driver seems to deliver SIOCGIWSCAN events to notify
1122                  * when scan is complete, so use longer timeout to avoid race
1123                  * conditions with scanning and following association request.
1124                  */
1125                 timeout = 30;
1126         }
1127         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1128                    "seconds", ret, timeout);
1129         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1130         eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1131                                drv->ctx);
1132
1133         return ret;
1134 }
1135
1136
1137 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1138                                     size_t *len)
1139 {
1140         struct iwreq iwr;
1141         u8 *res_buf;
1142         size_t res_buf_len;
1143
1144         res_buf_len = IW_SCAN_MAX_DATA;
1145         for (;;) {
1146                 res_buf = os_malloc(res_buf_len);
1147                 if (res_buf == NULL)
1148                         return NULL;
1149                 os_memset(&iwr, 0, sizeof(iwr));
1150                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1151                 iwr.u.data.pointer = res_buf;
1152                 iwr.u.data.length = res_buf_len;
1153
1154                 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1155                         break;
1156
1157                 if (errno == E2BIG && res_buf_len < 65535) {
1158                         os_free(res_buf);
1159                         res_buf = NULL;
1160                         res_buf_len *= 2;
1161                         if (res_buf_len > 65535)
1162                                 res_buf_len = 65535; /* 16-bit length field */
1163                         wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1164                                    "trying larger buffer (%lu bytes)",
1165                                    (unsigned long) res_buf_len);
1166                 } else {
1167                         perror("ioctl[SIOCGIWSCAN]");
1168                         os_free(res_buf);
1169                         return NULL;
1170                 }
1171         }
1172
1173         if (iwr.u.data.length > res_buf_len) {
1174                 os_free(res_buf);
1175                 return NULL;
1176         }
1177         *len = iwr.u.data.length;
1178
1179         return res_buf;
1180 }
1181
1182
1183 /*
1184  * Data structure for collecting WEXT scan results. This is needed to allow
1185  * the various methods of reporting IEs to be combined into a single IE buffer.
1186  */
1187 struct wext_scan_data {
1188         struct wpa_scan_res res;
1189         u8 *ie;
1190         size_t ie_len;
1191         u8 ssid[32];
1192         size_t ssid_len;
1193         int maxrate;
1194 };
1195
1196
1197 static void wext_get_scan_mode(struct iw_event *iwe,
1198                                struct wext_scan_data *res)
1199 {
1200         if (iwe->u.mode == IW_MODE_ADHOC)
1201                 res->res.caps |= IEEE80211_CAP_IBSS;
1202         else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1203                 res->res.caps |= IEEE80211_CAP_ESS;
1204 }
1205
1206
1207 static void wext_get_scan_ssid(struct iw_event *iwe,
1208                                struct wext_scan_data *res, char *custom,
1209                                char *end)
1210 {
1211         int ssid_len = iwe->u.essid.length;
1212         if (custom + ssid_len > end)
1213                 return;
1214         if (iwe->u.essid.flags &&
1215             ssid_len > 0 &&
1216             ssid_len <= IW_ESSID_MAX_SIZE) {
1217                 os_memcpy(res->ssid, custom, ssid_len);
1218                 res->ssid_len = ssid_len;
1219         }
1220 }
1221
1222
1223 static void wext_get_scan_freq(struct iw_event *iwe,
1224                                struct wext_scan_data *res)
1225 {
1226         int divi = 1000000, i;
1227
1228         if (iwe->u.freq.e == 0) {
1229                 /*
1230                  * Some drivers do not report frequency, but a channel.
1231                  * Try to map this to frequency by assuming they are using
1232                  * IEEE 802.11b/g.  But don't overwrite a previously parsed
1233                  * frequency if the driver sends both frequency and channel,
1234                  * since the driver may be sending an A-band channel that we
1235                  * don't handle here.
1236                  */
1237
1238                 if (res->res.freq)
1239                         return;
1240
1241                 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1242                         res->res.freq = 2407 + 5 * iwe->u.freq.m;
1243                         return;
1244                 } else if (iwe->u.freq.m == 14) {
1245                         res->res.freq = 2484;
1246                         return;
1247                 }
1248         }
1249
1250         if (iwe->u.freq.e > 6) {
1251                 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1252                            MACSTR " m=%d e=%d)",
1253                            MAC2STR(res->res.bssid), iwe->u.freq.m,
1254                            iwe->u.freq.e);
1255                 return;
1256         }
1257
1258         for (i = 0; i < iwe->u.freq.e; i++)
1259                 divi /= 10;
1260         res->res.freq = iwe->u.freq.m / divi;
1261 }
1262
1263
1264 static void wext_get_scan_qual(struct iw_event *iwe,
1265                                struct wext_scan_data *res)
1266 {
1267         res->res.qual = iwe->u.qual.qual;
1268         res->res.noise = iwe->u.qual.noise;
1269         res->res.level = iwe->u.qual.level;
1270 }
1271
1272
1273 static void wext_get_scan_encode(struct iw_event *iwe,
1274                                  struct wext_scan_data *res)
1275 {
1276         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1277                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1278 }
1279
1280
1281 static void wext_get_scan_rate(struct iw_event *iwe,
1282                                struct wext_scan_data *res, char *pos,
1283                                char *end)
1284 {
1285         int maxrate;
1286         char *custom = pos + IW_EV_LCP_LEN;
1287         struct iw_param p;
1288         size_t clen;
1289
1290         clen = iwe->len;
1291         if (custom + clen > end)
1292                 return;
1293         maxrate = 0;
1294         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1295                 /* Note: may be misaligned, make a local, aligned copy */
1296                 os_memcpy(&p, custom, sizeof(struct iw_param));
1297                 if (p.value > maxrate)
1298                         maxrate = p.value;
1299                 clen -= sizeof(struct iw_param);
1300                 custom += sizeof(struct iw_param);
1301         }
1302
1303         /* Convert the maxrate from WE-style (b/s units) to
1304          * 802.11 rates (500000 b/s units).
1305          */
1306         res->maxrate = maxrate / 500000;
1307 }
1308
1309
1310 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1311                                     struct wext_scan_data *res, char *custom,
1312                                     char *end)
1313 {
1314         char *genie, *gpos, *gend;
1315         u8 *tmp;
1316
1317         if (iwe->u.data.length == 0)
1318                 return;
1319
1320         gpos = genie = custom;
1321         gend = genie + iwe->u.data.length;
1322         if (gend > end) {
1323                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1324                 return;
1325         }
1326
1327         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1328         if (tmp == NULL)
1329                 return;
1330         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1331         res->ie = tmp;
1332         res->ie_len += gend - gpos;
1333 }
1334
1335
1336 static void wext_get_scan_custom(struct iw_event *iwe,
1337                                  struct wext_scan_data *res, char *custom,
1338                                  char *end)
1339 {
1340         size_t clen;
1341         u8 *tmp;
1342
1343         clen = iwe->u.data.length;
1344         if (custom + clen > end)
1345                 return;
1346
1347         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1348                 char *spos;
1349                 int bytes;
1350                 spos = custom + 7;
1351                 bytes = custom + clen - spos;
1352                 if (bytes & 1 || bytes == 0)
1353                         return;
1354                 bytes /= 2;
1355                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1356                 if (tmp == NULL)
1357                         return;
1358                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1359                 res->ie = tmp;
1360                 res->ie_len += bytes;
1361         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1362                 char *spos;
1363                 int bytes;
1364                 spos = custom + 7;
1365                 bytes = custom + clen - spos;
1366                 if (bytes & 1 || bytes == 0)
1367                         return;
1368                 bytes /= 2;
1369                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1370                 if (tmp == NULL)
1371                         return;
1372                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1373                 res->ie = tmp;
1374                 res->ie_len += bytes;
1375         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1376                 char *spos;
1377                 int bytes;
1378                 u8 bin[8];
1379                 spos = custom + 4;
1380                 bytes = custom + clen - spos;
1381                 if (bytes != 16) {
1382                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1383                         return;
1384                 }
1385                 bytes /= 2;
1386                 hexstr2bin(spos, bin, bytes);
1387                 res->res.tsf += WPA_GET_BE64(bin);
1388         }
1389 }
1390
1391
1392 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1393 {
1394         return drv->we_version_compiled > 18 &&
1395                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1396                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1397 }
1398
1399
1400 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1401                                            struct wext_scan_data *data)
1402 {
1403         struct wpa_scan_res **tmp;
1404         struct wpa_scan_res *r;
1405         size_t extra_len;
1406         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1407
1408         /* Figure out whether we need to fake any IEs */
1409         pos = data->ie;
1410         end = pos + data->ie_len;
1411         while (pos && pos + 1 < end) {
1412                 if (pos + 2 + pos[1] > end)
1413                         break;
1414                 if (pos[0] == WLAN_EID_SSID)
1415                         ssid_ie = pos;
1416                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1417                         rate_ie = pos;
1418                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1419                         rate_ie = pos;
1420                 pos += 2 + pos[1];
1421         }
1422
1423         extra_len = 0;
1424         if (ssid_ie == NULL)
1425                 extra_len += 2 + data->ssid_len;
1426         if (rate_ie == NULL && data->maxrate)
1427                 extra_len += 3;
1428
1429         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1430         if (r == NULL)
1431                 return;
1432         os_memcpy(r, &data->res, sizeof(*r));
1433         r->ie_len = extra_len + data->ie_len;
1434         pos = (u8 *) (r + 1);
1435         if (ssid_ie == NULL) {
1436                 /*
1437                  * Generate a fake SSID IE since the driver did not report
1438                  * a full IE list.
1439                  */
1440                 *pos++ = WLAN_EID_SSID;
1441                 *pos++ = data->ssid_len;
1442                 os_memcpy(pos, data->ssid, data->ssid_len);
1443                 pos += data->ssid_len;
1444         }
1445         if (rate_ie == NULL && data->maxrate) {
1446                 /*
1447                  * Generate a fake Supported Rates IE since the driver did not
1448                  * report a full IE list.
1449                  */
1450                 *pos++ = WLAN_EID_SUPP_RATES;
1451                 *pos++ = 1;
1452                 *pos++ = data->maxrate;
1453         }
1454         if (data->ie)
1455                 os_memcpy(pos, data->ie, data->ie_len);
1456
1457         tmp = os_realloc(res->res,
1458                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1459         if (tmp == NULL) {
1460                 os_free(r);
1461                 return;
1462         }
1463         tmp[res->num++] = r;
1464         res->res = tmp;
1465 }
1466
1467
1468 /**
1469  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1470  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1471  * Returns: Scan results on success, -1 on failure
1472  */
1473 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1474 {
1475         struct wpa_driver_wext_data *drv = priv;
1476         size_t ap_num = 0, len;
1477         int first;
1478         u8 *res_buf;
1479         struct iw_event iwe_buf, *iwe = &iwe_buf;
1480         char *pos, *end, *custom;
1481         struct wpa_scan_results *res;
1482         struct wext_scan_data data;
1483
1484         res_buf = wpa_driver_wext_giwscan(drv, &len);
1485         if (res_buf == NULL)
1486                 return NULL;
1487
1488         ap_num = 0;
1489         first = 1;
1490
1491         res = os_zalloc(sizeof(*res));
1492         if (res == NULL) {
1493                 os_free(res_buf);
1494                 return NULL;
1495         }
1496
1497         pos = (char *) res_buf;
1498         end = (char *) res_buf + len;
1499         os_memset(&data, 0, sizeof(data));
1500
1501         while (pos + IW_EV_LCP_LEN <= end) {
1502                 /* Event data may be unaligned, so make a local, aligned copy
1503                  * before processing. */
1504                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1505                 if (iwe->len <= IW_EV_LCP_LEN)
1506                         break;
1507
1508                 custom = pos + IW_EV_POINT_LEN;
1509                 if (wext_19_iw_point(drv, iwe->cmd)) {
1510                         /* WE-19 removed the pointer from struct iw_point */
1511                         char *dpos = (char *) &iwe_buf.u.data.length;
1512                         int dlen = dpos - (char *) &iwe_buf;
1513                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1514                                   sizeof(struct iw_event) - dlen);
1515                 } else {
1516                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1517                         custom += IW_EV_POINT_OFF;
1518                 }
1519
1520                 switch (iwe->cmd) {
1521                 case SIOCGIWAP:
1522                         if (!first)
1523                                 wpa_driver_wext_add_scan_entry(res, &data);
1524                         first = 0;
1525                         os_free(data.ie);
1526                         os_memset(&data, 0, sizeof(data));
1527                         os_memcpy(data.res.bssid,
1528                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1529                         break;
1530                 case SIOCGIWMODE:
1531                         wext_get_scan_mode(iwe, &data);
1532                         break;
1533                 case SIOCGIWESSID:
1534                         wext_get_scan_ssid(iwe, &data, custom, end);
1535                         break;
1536                 case SIOCGIWFREQ:
1537                         wext_get_scan_freq(iwe, &data);
1538                         break;
1539                 case IWEVQUAL:
1540                         wext_get_scan_qual(iwe, &data);
1541                         break;
1542                 case SIOCGIWENCODE:
1543                         wext_get_scan_encode(iwe, &data);
1544                         break;
1545                 case SIOCGIWRATE:
1546                         wext_get_scan_rate(iwe, &data, pos, end);
1547                         break;
1548                 case IWEVGENIE:
1549                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1550                         break;
1551                 case IWEVCUSTOM:
1552                         wext_get_scan_custom(iwe, &data, custom, end);
1553                         break;
1554                 }
1555
1556                 pos += iwe->len;
1557         }
1558         os_free(res_buf);
1559         res_buf = NULL;
1560         if (!first)
1561                 wpa_driver_wext_add_scan_entry(res, &data);
1562         os_free(data.ie);
1563
1564         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1565                    (unsigned long) len, (unsigned long) res->num);
1566
1567         return res;
1568 }
1569
1570
1571 static int wpa_driver_wext_get_range(void *priv)
1572 {
1573         struct wpa_driver_wext_data *drv = priv;
1574         struct iw_range *range;
1575         struct iwreq iwr;
1576         int minlen;
1577         size_t buflen;
1578
1579         /*
1580          * Use larger buffer than struct iw_range in order to allow the
1581          * structure to grow in the future.
1582          */
1583         buflen = sizeof(struct iw_range) + 500;
1584         range = os_zalloc(buflen);
1585         if (range == NULL)
1586                 return -1;
1587
1588         os_memset(&iwr, 0, sizeof(iwr));
1589         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1590         iwr.u.data.pointer = (caddr_t) range;
1591         iwr.u.data.length = buflen;
1592
1593         minlen = ((char *) &range->enc_capa) - (char *) range +
1594                 sizeof(range->enc_capa);
1595
1596         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1597                 perror("ioctl[SIOCGIWRANGE]");
1598                 os_free(range);
1599                 return -1;
1600         } else if (iwr.u.data.length >= minlen &&
1601                    range->we_version_compiled >= 18) {
1602                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1603                            "WE(source)=%d enc_capa=0x%x",
1604                            range->we_version_compiled,
1605                            range->we_version_source,
1606                            range->enc_capa);
1607                 drv->has_capability = 1;
1608                 drv->we_version_compiled = range->we_version_compiled;
1609                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1610                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1611                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1612                 }
1613                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1614                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1615                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1616                 }
1617                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1618                         WPA_DRIVER_CAPA_ENC_WEP104;
1619                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1620                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1621                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1622                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1623                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1624                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1625                 drv->capa.max_scan_ssids = 1;
1626
1627                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1628                            "flags 0x%x",
1629                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1630         } else {
1631                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1632                            "assuming WPA is not supported");
1633         }
1634
1635         os_free(range);
1636         return 0;
1637 }
1638
1639
1640 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1641 {
1642         struct wpa_driver_wext_data *drv = priv;
1643         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1644
1645         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1646                                               enabled);
1647 }
1648
1649
1650 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1651                                    const u8 *psk)
1652 {
1653         struct iw_encode_ext *ext;
1654         struct iwreq iwr;
1655         int ret;
1656
1657         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1658
1659         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1660                 return 0;
1661
1662         if (!psk)
1663                 return 0;
1664
1665         os_memset(&iwr, 0, sizeof(iwr));
1666         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1667
1668         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1669         if (ext == NULL)
1670                 return -1;
1671
1672         iwr.u.encoding.pointer = (caddr_t) ext;
1673         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1674         ext->key_len = PMK_LEN;
1675         os_memcpy(&ext->key, psk, ext->key_len);
1676         ext->alg = IW_ENCODE_ALG_PMK;
1677
1678         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1679         if (ret < 0)
1680                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1681         os_free(ext);
1682
1683         return ret;
1684 }
1685
1686
1687 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1688                                        const u8 *addr, int key_idx,
1689                                        int set_tx, const u8 *seq,
1690                                        size_t seq_len,
1691                                        const u8 *key, size_t key_len)
1692 {
1693         struct wpa_driver_wext_data *drv = priv;
1694         struct iwreq iwr;
1695         int ret = 0;
1696         struct iw_encode_ext *ext;
1697
1698         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1699                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1700                            __FUNCTION__, (unsigned long) seq_len);
1701                 return -1;
1702         }
1703
1704         ext = os_zalloc(sizeof(*ext) + key_len);
1705         if (ext == NULL)
1706                 return -1;
1707         os_memset(&iwr, 0, sizeof(iwr));
1708         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1709         iwr.u.encoding.flags = key_idx + 1;
1710         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1711         if (alg == WPA_ALG_NONE)
1712                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1713         iwr.u.encoding.pointer = (caddr_t) ext;
1714         iwr.u.encoding.length = sizeof(*ext) + key_len;
1715
1716         if (addr == NULL ||
1717             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1718                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1719         if (set_tx)
1720                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1721
1722         ext->addr.sa_family = ARPHRD_ETHER;
1723         if (addr)
1724                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1725         else
1726                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1727         if (key && key_len) {
1728                 os_memcpy(ext + 1, key, key_len);
1729                 ext->key_len = key_len;
1730         }
1731         switch (alg) {
1732         case WPA_ALG_NONE:
1733                 ext->alg = IW_ENCODE_ALG_NONE;
1734                 break;
1735         case WPA_ALG_WEP:
1736                 ext->alg = IW_ENCODE_ALG_WEP;
1737                 break;
1738         case WPA_ALG_TKIP:
1739                 ext->alg = IW_ENCODE_ALG_TKIP;
1740                 break;
1741         case WPA_ALG_CCMP:
1742                 ext->alg = IW_ENCODE_ALG_CCMP;
1743                 break;
1744         case WPA_ALG_PMK:
1745                 ext->alg = IW_ENCODE_ALG_PMK;
1746                 break;
1747 #ifdef CONFIG_IEEE80211W
1748         case WPA_ALG_IGTK:
1749                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1750                 break;
1751 #endif /* CONFIG_IEEE80211W */
1752         default:
1753                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1754                            __FUNCTION__, alg);
1755                 os_free(ext);
1756                 return -1;
1757         }
1758
1759         if (seq && seq_len) {
1760                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1761                 os_memcpy(ext->rx_seq, seq, seq_len);
1762         }
1763
1764         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1765                 ret = errno == EOPNOTSUPP ? -2 : -1;
1766                 if (errno == ENODEV) {
1767                         /*
1768                          * ndiswrapper seems to be returning incorrect error
1769                          * code.. */
1770                         ret = -2;
1771                 }
1772
1773                 perror("ioctl[SIOCSIWENCODEEXT]");
1774         }
1775
1776         os_free(ext);
1777         return ret;
1778 }
1779
1780
1781 /**
1782  * wpa_driver_wext_set_key - Configure encryption key
1783  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1784  * @priv: Private driver interface data
1785  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1786  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1787  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1788  *      broadcast/default keys
1789  * @key_idx: key index (0..3), usually 0 for unicast keys
1790  * @set_tx: Configure this key as the default Tx key (only used when
1791  *      driver does not support separate unicast/individual key
1792  * @seq: Sequence number/packet number, seq_len octets, the next
1793  *      packet number to be used for in replay protection; configured
1794  *      for Rx keys (in most cases, this is only used with broadcast
1795  *      keys and set to zero for unicast keys)
1796  * @seq_len: Length of the seq, depends on the algorithm:
1797  *      TKIP: 6 octets, CCMP: 6 octets
1798  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1799  *      8-byte Rx Mic Key
1800  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1801  *      TKIP: 32, CCMP: 16)
1802  * Returns: 0 on success, -1 on failure
1803  *
1804  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1805  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1806  */
1807 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1808                             const u8 *addr, int key_idx,
1809                             int set_tx, const u8 *seq, size_t seq_len,
1810                             const u8 *key, size_t key_len)
1811 {
1812         struct wpa_driver_wext_data *drv = priv;
1813         struct iwreq iwr;
1814         int ret = 0;
1815
1816         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1817                    "key_len=%lu",
1818                    __FUNCTION__, alg, key_idx, set_tx,
1819                    (unsigned long) seq_len, (unsigned long) key_len);
1820
1821         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1822                                           seq, seq_len, key, key_len);
1823         if (ret == 0)
1824                 return 0;
1825
1826         if (ret == -2 &&
1827             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1828                 wpa_printf(MSG_DEBUG, "Driver did not support "
1829                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1830                 ret = 0;
1831         } else {
1832                 wpa_printf(MSG_DEBUG, "Driver did not support "
1833                            "SIOCSIWENCODEEXT");
1834                 return ret;
1835         }
1836
1837         os_memset(&iwr, 0, sizeof(iwr));
1838         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1839         iwr.u.encoding.flags = key_idx + 1;
1840         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1841         if (alg == WPA_ALG_NONE)
1842                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1843         iwr.u.encoding.pointer = (caddr_t) key;
1844         iwr.u.encoding.length = key_len;
1845
1846         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1847                 perror("ioctl[SIOCSIWENCODE]");
1848                 ret = -1;
1849         }
1850
1851         if (set_tx && alg != WPA_ALG_NONE) {
1852                 os_memset(&iwr, 0, sizeof(iwr));
1853                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1854                 iwr.u.encoding.flags = key_idx + 1;
1855                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1856                 iwr.u.encoding.pointer = (caddr_t) NULL;
1857                 iwr.u.encoding.length = 0;
1858                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1859                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1860                         ret = -1;
1861                 }
1862         }
1863
1864         return ret;
1865 }
1866
1867
1868 static int wpa_driver_wext_set_countermeasures(void *priv,
1869                                                int enabled)
1870 {
1871         struct wpa_driver_wext_data *drv = priv;
1872         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1873         return wpa_driver_wext_set_auth_param(drv,
1874                                               IW_AUTH_TKIP_COUNTERMEASURES,
1875                                               enabled);
1876 }
1877
1878
1879 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1880                                                 int enabled)
1881 {
1882         struct wpa_driver_wext_data *drv = priv;
1883         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1884         drv->use_crypt = enabled;
1885         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1886                                               enabled);
1887 }
1888
1889
1890 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1891                                 const u8 *addr, int cmd, int reason_code)
1892 {
1893         struct iwreq iwr;
1894         struct iw_mlme mlme;
1895         int ret = 0;
1896
1897         os_memset(&iwr, 0, sizeof(iwr));
1898         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1899         os_memset(&mlme, 0, sizeof(mlme));
1900         mlme.cmd = cmd;
1901         mlme.reason_code = reason_code;
1902         mlme.addr.sa_family = ARPHRD_ETHER;
1903         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1904         iwr.u.data.pointer = (caddr_t) &mlme;
1905         iwr.u.data.length = sizeof(mlme);
1906
1907         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1908                 perror("ioctl[SIOCSIWMLME]");
1909                 ret = -1;
1910         }
1911
1912         return ret;
1913 }
1914
1915
1916 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1917 {
1918         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1919         u8 ssid[32];
1920         int i;
1921
1922         /*
1923          * Clear the BSSID selection and set a random SSID to make sure the
1924          * driver will not be trying to associate with something even if it
1925          * does not understand SIOCSIWMLME commands (or tries to associate
1926          * automatically after deauth/disassoc).
1927          */
1928         wpa_driver_wext_set_bssid(drv, null_bssid);
1929
1930         for (i = 0; i < 32; i++)
1931                 ssid[i] = rand() & 0xFF;
1932         wpa_driver_wext_set_ssid(drv, ssid, 32);
1933 }
1934
1935
1936 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1937                                           int reason_code)
1938 {
1939         struct wpa_driver_wext_data *drv = priv;
1940         int ret;
1941         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1942         wpa_driver_wext_disconnect(drv);
1943         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1944         return ret;
1945 }
1946
1947
1948 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1949                                         int reason_code)
1950 {
1951         struct wpa_driver_wext_data *drv = priv;
1952         int ret;
1953         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1954         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1955         wpa_driver_wext_disconnect(drv);
1956         return ret;
1957 }
1958
1959
1960 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1961                                       size_t ie_len)
1962 {
1963         struct wpa_driver_wext_data *drv = priv;
1964         struct iwreq iwr;
1965         int ret = 0;
1966
1967         os_memset(&iwr, 0, sizeof(iwr));
1968         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1969         iwr.u.data.pointer = (caddr_t) ie;
1970         iwr.u.data.length = ie_len;
1971
1972         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
1973                 perror("ioctl[SIOCSIWGENIE]");
1974                 ret = -1;
1975         }
1976
1977         return ret;
1978 }
1979
1980
1981 int wpa_driver_wext_cipher2wext(int cipher)
1982 {
1983         switch (cipher) {
1984         case CIPHER_NONE:
1985                 return IW_AUTH_CIPHER_NONE;
1986         case CIPHER_WEP40:
1987                 return IW_AUTH_CIPHER_WEP40;
1988         case CIPHER_TKIP:
1989                 return IW_AUTH_CIPHER_TKIP;
1990         case CIPHER_CCMP:
1991                 return IW_AUTH_CIPHER_CCMP;
1992         case CIPHER_WEP104:
1993                 return IW_AUTH_CIPHER_WEP104;
1994         default:
1995                 return 0;
1996         }
1997 }
1998
1999
2000 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2001 {
2002         switch (keymgmt) {
2003         case KEY_MGMT_802_1X:
2004         case KEY_MGMT_802_1X_NO_WPA:
2005                 return IW_AUTH_KEY_MGMT_802_1X;
2006         case KEY_MGMT_PSK:
2007                 return IW_AUTH_KEY_MGMT_PSK;
2008         default:
2009                 return 0;
2010         }
2011 }
2012
2013
2014 static int
2015 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2016                                   struct wpa_driver_associate_params *params)
2017 {
2018         struct iwreq iwr;
2019         int ret = 0;
2020
2021         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2022                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2023
2024         os_memset(&iwr, 0, sizeof(iwr));
2025         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2026         /* Just changing mode, not actual keys */
2027         iwr.u.encoding.flags = 0;
2028         iwr.u.encoding.pointer = (caddr_t) NULL;
2029         iwr.u.encoding.length = 0;
2030
2031         /*
2032          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2033          * different things. Here they are used to indicate Open System vs.
2034          * Shared Key authentication algorithm. However, some drivers may use
2035          * them to select between open/restricted WEP encrypted (open = allow
2036          * both unencrypted and encrypted frames; restricted = only allow
2037          * encrypted frames).
2038          */
2039
2040         if (!drv->use_crypt) {
2041                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2042         } else {
2043                 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2044                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2045                 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2046                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2047         }
2048
2049         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2050                 perror("ioctl[SIOCSIWENCODE]");
2051                 ret = -1;
2052         }
2053
2054         return ret;
2055 }
2056
2057
2058 int wpa_driver_wext_associate(void *priv,
2059                               struct wpa_driver_associate_params *params)
2060 {
2061         struct wpa_driver_wext_data *drv = priv;
2062         int ret = 0;
2063         int allow_unencrypted_eapol;
2064         int value;
2065
2066         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2067
2068         /*
2069          * If the driver did not support SIOCSIWAUTH, fallback to
2070          * SIOCSIWENCODE here.
2071          */
2072         if (drv->auth_alg_fallback &&
2073             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2074                 ret = -1;
2075
2076         if (!params->bssid &&
2077             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2078                 ret = -1;
2079
2080         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2081          * from configuration, not from here, where only the selected suite is
2082          * available */
2083         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2084             < 0)
2085                 ret = -1;
2086         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2087                 value = IW_AUTH_WPA_VERSION_DISABLED;
2088         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2089                 value = IW_AUTH_WPA_VERSION_WPA2;
2090         else
2091                 value = IW_AUTH_WPA_VERSION_WPA;
2092         if (wpa_driver_wext_set_auth_param(drv,
2093                                            IW_AUTH_WPA_VERSION, value) < 0)
2094                 ret = -1;
2095         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2096         if (wpa_driver_wext_set_auth_param(drv,
2097                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2098                 ret = -1;
2099         value = wpa_driver_wext_cipher2wext(params->group_suite);
2100         if (wpa_driver_wext_set_auth_param(drv,
2101                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2102                 ret = -1;
2103         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2104         if (wpa_driver_wext_set_auth_param(drv,
2105                                            IW_AUTH_KEY_MGMT, value) < 0)
2106                 ret = -1;
2107         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2108                 params->pairwise_suite != CIPHER_NONE ||
2109                 params->group_suite != CIPHER_NONE ||
2110                 params->wpa_ie_len;
2111         if (wpa_driver_wext_set_auth_param(drv,
2112                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2113                 ret = -1;
2114
2115         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2116          * not using WPA. IEEE 802.1X specifies that these frames are not
2117          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2118         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2119             params->key_mgmt_suite == KEY_MGMT_PSK)
2120                 allow_unencrypted_eapol = 0;
2121         else
2122                 allow_unencrypted_eapol = 1;
2123
2124         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2125                 ret = -1;
2126         if (wpa_driver_wext_set_auth_param(drv,
2127                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2128                                            allow_unencrypted_eapol) < 0)
2129                 ret = -1;
2130 #ifdef CONFIG_IEEE80211W
2131         switch (params->mgmt_frame_protection) {
2132         case NO_MGMT_FRAME_PROTECTION:
2133                 value = IW_AUTH_MFP_DISABLED;
2134                 break;
2135         case MGMT_FRAME_PROTECTION_OPTIONAL:
2136                 value = IW_AUTH_MFP_OPTIONAL;
2137                 break;
2138         case MGMT_FRAME_PROTECTION_REQUIRED:
2139                 value = IW_AUTH_MFP_REQUIRED;
2140                 break;
2141         };
2142         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2143                 ret = -1;
2144 #endif /* CONFIG_IEEE80211W */
2145         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2146                 ret = -1;
2147         if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2148                 ret = -1;
2149         if (params->bssid &&
2150             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2151                 ret = -1;
2152
2153         return ret;
2154 }
2155
2156
2157 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2158 {
2159         struct wpa_driver_wext_data *drv = priv;
2160         int algs = 0, res;
2161
2162         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2163                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2164         if (auth_alg & AUTH_ALG_SHARED_KEY)
2165                 algs |= IW_AUTH_ALG_SHARED_KEY;
2166         if (auth_alg & AUTH_ALG_LEAP)
2167                 algs |= IW_AUTH_ALG_LEAP;
2168         if (algs == 0) {
2169                 /* at least one algorithm should be set */
2170                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2171         }
2172
2173         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2174                                              algs);
2175         drv->auth_alg_fallback = res == -2;
2176         return res;
2177 }
2178
2179
2180 /**
2181  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2182  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2183  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2184  * Returns: 0 on success, -1 on failure
2185  */
2186 int wpa_driver_wext_set_mode(void *priv, int mode)
2187 {
2188         struct wpa_driver_wext_data *drv = priv;
2189         struct iwreq iwr;
2190         int ret = -1, flags;
2191         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2192
2193         os_memset(&iwr, 0, sizeof(iwr));
2194         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2195         iwr.u.mode = new_mode;
2196         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2197                 ret = 0;
2198                 goto done;
2199         }
2200
2201         if (errno != EBUSY) {
2202                 perror("ioctl[SIOCSIWMODE]");
2203                 goto done;
2204         }
2205
2206         /* mac80211 doesn't allow mode changes while the device is up, so if
2207          * the device isn't in the mode we're about to change to, take device
2208          * down, try to set the mode again, and bring it back up.
2209          */
2210         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2211                 perror("ioctl[SIOCGIWMODE]");
2212                 goto done;
2213         }
2214
2215         if (iwr.u.mode == new_mode) {
2216                 ret = 0;
2217                 goto done;
2218         }
2219
2220         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2221                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2222
2223                 /* Try to set the mode again while the interface is down */
2224                 iwr.u.mode = new_mode;
2225                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2226                         perror("ioctl[SIOCSIWMODE]");
2227                 else
2228                         ret = 0;
2229
2230                 /* Ignore return value of get_ifflags to ensure that the device
2231                  * is always up like it was before this function was called.
2232                  */
2233                 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2234                 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2235         }
2236
2237 done:
2238         return ret;
2239 }
2240
2241
2242 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2243                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2244 {
2245         struct iwreq iwr;
2246         struct iw_pmksa pmksa;
2247         int ret = 0;
2248
2249         os_memset(&iwr, 0, sizeof(iwr));
2250         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2251         os_memset(&pmksa, 0, sizeof(pmksa));
2252         pmksa.cmd = cmd;
2253         pmksa.bssid.sa_family = ARPHRD_ETHER;
2254         if (bssid)
2255                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2256         if (pmkid)
2257                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2258         iwr.u.data.pointer = (caddr_t) &pmksa;
2259         iwr.u.data.length = sizeof(pmksa);
2260
2261         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2262                 if (errno != EOPNOTSUPP)
2263                         perror("ioctl[SIOCSIWPMKSA]");
2264                 ret = -1;
2265         }
2266
2267         return ret;
2268 }
2269
2270
2271 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2272                                      const u8 *pmkid)
2273 {
2274         struct wpa_driver_wext_data *drv = priv;
2275         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2276 }
2277
2278
2279 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2280                                         const u8 *pmkid)
2281 {
2282         struct wpa_driver_wext_data *drv = priv;
2283         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2284 }
2285
2286
2287 static int wpa_driver_wext_flush_pmkid(void *priv)
2288 {
2289         struct wpa_driver_wext_data *drv = priv;
2290         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2291 }
2292
2293
2294 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2295 {
2296         struct wpa_driver_wext_data *drv = priv;
2297         if (!drv->has_capability)
2298                 return -1;
2299         os_memcpy(capa, &drv->capa, sizeof(*capa));
2300         return 0;
2301 }
2302
2303
2304 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2305                                         const char *ifname)
2306 {
2307         if (ifname == NULL) {
2308                 drv->ifindex2 = -1;
2309                 return 0;
2310         }
2311
2312         drv->ifindex2 = if_nametoindex(ifname);
2313         if (drv->ifindex2 <= 0)
2314                 return -1;
2315
2316         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2317                    "wireless events", drv->ifindex2, ifname);
2318
2319         return 0;
2320 }
2321
2322
2323 int wpa_driver_wext_set_operstate(void *priv, int state)
2324 {
2325         struct wpa_driver_wext_data *drv = priv;
2326
2327         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2328                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2329         drv->operstate = state;
2330         return wpa_driver_wext_send_oper_ifla(
2331                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2332 }
2333
2334
2335 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2336 {
2337         return drv->we_version_compiled;
2338 }
2339
2340
2341 const struct wpa_driver_ops wpa_driver_wext_ops = {
2342         .name = "wext",
2343         .desc = "Linux wireless extensions (generic)",
2344         .get_bssid = wpa_driver_wext_get_bssid,
2345         .get_ssid = wpa_driver_wext_get_ssid,
2346         .set_wpa = wpa_driver_wext_set_wpa,
2347         .set_key = wpa_driver_wext_set_key,
2348         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2349         .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2350         .scan = wpa_driver_wext_scan,
2351         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2352         .deauthenticate = wpa_driver_wext_deauthenticate,
2353         .disassociate = wpa_driver_wext_disassociate,
2354         .set_mode = wpa_driver_wext_set_mode,
2355         .associate = wpa_driver_wext_associate,
2356         .set_auth_alg = wpa_driver_wext_set_auth_alg,
2357         .init = wpa_driver_wext_init,
2358         .deinit = wpa_driver_wext_deinit,
2359         .add_pmkid = wpa_driver_wext_add_pmkid,
2360         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2361         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2362         .get_capa = wpa_driver_wext_get_capa,
2363         .set_operstate = wpa_driver_wext_set_operstate,
2364 };