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         if (iwe->u.qual.updated & IW_QUAL_QUAL_INVALID)
1271                 res->res.flags |= WPA_SCAN_QUAL_INVALID;
1272         if (iwe->u.qual.updated & IW_QUAL_LEVEL_INVALID)
1273                 res->res.flags |= WPA_SCAN_LEVEL_INVALID;
1274         if (iwe->u.qual.updated & IW_QUAL_NOISE_INVALID)
1275                 res->res.flags |= WPA_SCAN_NOISE_INVALID;
1276         if (iwe->u.qual.updated & IW_QUAL_DBM)
1277                 res->res.flags |= WPA_SCAN_LEVEL_DBM;
1278 }
1279
1280
1281 static void wext_get_scan_encode(struct iw_event *iwe,
1282                                  struct wext_scan_data *res)
1283 {
1284         if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1285                 res->res.caps |= IEEE80211_CAP_PRIVACY;
1286 }
1287
1288
1289 static void wext_get_scan_rate(struct iw_event *iwe,
1290                                struct wext_scan_data *res, char *pos,
1291                                char *end)
1292 {
1293         int maxrate;
1294         char *custom = pos + IW_EV_LCP_LEN;
1295         struct iw_param p;
1296         size_t clen;
1297
1298         clen = iwe->len;
1299         if (custom + clen > end)
1300                 return;
1301         maxrate = 0;
1302         while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1303                 /* Note: may be misaligned, make a local, aligned copy */
1304                 os_memcpy(&p, custom, sizeof(struct iw_param));
1305                 if (p.value > maxrate)
1306                         maxrate = p.value;
1307                 clen -= sizeof(struct iw_param);
1308                 custom += sizeof(struct iw_param);
1309         }
1310
1311         /* Convert the maxrate from WE-style (b/s units) to
1312          * 802.11 rates (500000 b/s units).
1313          */
1314         res->maxrate = maxrate / 500000;
1315 }
1316
1317
1318 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1319                                     struct wext_scan_data *res, char *custom,
1320                                     char *end)
1321 {
1322         char *genie, *gpos, *gend;
1323         u8 *tmp;
1324
1325         if (iwe->u.data.length == 0)
1326                 return;
1327
1328         gpos = genie = custom;
1329         gend = genie + iwe->u.data.length;
1330         if (gend > end) {
1331                 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1332                 return;
1333         }
1334
1335         tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1336         if (tmp == NULL)
1337                 return;
1338         os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1339         res->ie = tmp;
1340         res->ie_len += gend - gpos;
1341 }
1342
1343
1344 static void wext_get_scan_custom(struct iw_event *iwe,
1345                                  struct wext_scan_data *res, char *custom,
1346                                  char *end)
1347 {
1348         size_t clen;
1349         u8 *tmp;
1350
1351         clen = iwe->u.data.length;
1352         if (custom + clen > end)
1353                 return;
1354
1355         if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1356                 char *spos;
1357                 int bytes;
1358                 spos = custom + 7;
1359                 bytes = custom + clen - spos;
1360                 if (bytes & 1 || bytes == 0)
1361                         return;
1362                 bytes /= 2;
1363                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1364                 if (tmp == NULL)
1365                         return;
1366                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1367                 res->ie = tmp;
1368                 res->ie_len += bytes;
1369         } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1370                 char *spos;
1371                 int bytes;
1372                 spos = custom + 7;
1373                 bytes = custom + clen - spos;
1374                 if (bytes & 1 || bytes == 0)
1375                         return;
1376                 bytes /= 2;
1377                 tmp = os_realloc(res->ie, res->ie_len + bytes);
1378                 if (tmp == NULL)
1379                         return;
1380                 hexstr2bin(spos, tmp + res->ie_len, bytes);
1381                 res->ie = tmp;
1382                 res->ie_len += bytes;
1383         } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1384                 char *spos;
1385                 int bytes;
1386                 u8 bin[8];
1387                 spos = custom + 4;
1388                 bytes = custom + clen - spos;
1389                 if (bytes != 16) {
1390                         wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1391                         return;
1392                 }
1393                 bytes /= 2;
1394                 hexstr2bin(spos, bin, bytes);
1395                 res->res.tsf += WPA_GET_BE64(bin);
1396         }
1397 }
1398
1399
1400 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1401 {
1402         return drv->we_version_compiled > 18 &&
1403                 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1404                  cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1405 }
1406
1407
1408 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1409                                            struct wext_scan_data *data)
1410 {
1411         struct wpa_scan_res **tmp;
1412         struct wpa_scan_res *r;
1413         size_t extra_len;
1414         u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1415
1416         /* Figure out whether we need to fake any IEs */
1417         pos = data->ie;
1418         end = pos + data->ie_len;
1419         while (pos && pos + 1 < end) {
1420                 if (pos + 2 + pos[1] > end)
1421                         break;
1422                 if (pos[0] == WLAN_EID_SSID)
1423                         ssid_ie = pos;
1424                 else if (pos[0] == WLAN_EID_SUPP_RATES)
1425                         rate_ie = pos;
1426                 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1427                         rate_ie = pos;
1428                 pos += 2 + pos[1];
1429         }
1430
1431         extra_len = 0;
1432         if (ssid_ie == NULL)
1433                 extra_len += 2 + data->ssid_len;
1434         if (rate_ie == NULL && data->maxrate)
1435                 extra_len += 3;
1436
1437         r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1438         if (r == NULL)
1439                 return;
1440         os_memcpy(r, &data->res, sizeof(*r));
1441         r->ie_len = extra_len + data->ie_len;
1442         pos = (u8 *) (r + 1);
1443         if (ssid_ie == NULL) {
1444                 /*
1445                  * Generate a fake SSID IE since the driver did not report
1446                  * a full IE list.
1447                  */
1448                 *pos++ = WLAN_EID_SSID;
1449                 *pos++ = data->ssid_len;
1450                 os_memcpy(pos, data->ssid, data->ssid_len);
1451                 pos += data->ssid_len;
1452         }
1453         if (rate_ie == NULL && data->maxrate) {
1454                 /*
1455                  * Generate a fake Supported Rates IE since the driver did not
1456                  * report a full IE list.
1457                  */
1458                 *pos++ = WLAN_EID_SUPP_RATES;
1459                 *pos++ = 1;
1460                 *pos++ = data->maxrate;
1461         }
1462         if (data->ie)
1463                 os_memcpy(pos, data->ie, data->ie_len);
1464
1465         tmp = os_realloc(res->res,
1466                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1467         if (tmp == NULL) {
1468                 os_free(r);
1469                 return;
1470         }
1471         tmp[res->num++] = r;
1472         res->res = tmp;
1473 }
1474
1475
1476 /**
1477  * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1478  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1479  * Returns: Scan results on success, -1 on failure
1480  */
1481 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1482 {
1483         struct wpa_driver_wext_data *drv = priv;
1484         size_t ap_num = 0, len;
1485         int first;
1486         u8 *res_buf;
1487         struct iw_event iwe_buf, *iwe = &iwe_buf;
1488         char *pos, *end, *custom;
1489         struct wpa_scan_results *res;
1490         struct wext_scan_data data;
1491
1492         res_buf = wpa_driver_wext_giwscan(drv, &len);
1493         if (res_buf == NULL)
1494                 return NULL;
1495
1496         ap_num = 0;
1497         first = 1;
1498
1499         res = os_zalloc(sizeof(*res));
1500         if (res == NULL) {
1501                 os_free(res_buf);
1502                 return NULL;
1503         }
1504
1505         pos = (char *) res_buf;
1506         end = (char *) res_buf + len;
1507         os_memset(&data, 0, sizeof(data));
1508
1509         while (pos + IW_EV_LCP_LEN <= end) {
1510                 /* Event data may be unaligned, so make a local, aligned copy
1511                  * before processing. */
1512                 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1513                 if (iwe->len <= IW_EV_LCP_LEN)
1514                         break;
1515
1516                 custom = pos + IW_EV_POINT_LEN;
1517                 if (wext_19_iw_point(drv, iwe->cmd)) {
1518                         /* WE-19 removed the pointer from struct iw_point */
1519                         char *dpos = (char *) &iwe_buf.u.data.length;
1520                         int dlen = dpos - (char *) &iwe_buf;
1521                         os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1522                                   sizeof(struct iw_event) - dlen);
1523                 } else {
1524                         os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1525                         custom += IW_EV_POINT_OFF;
1526                 }
1527
1528                 switch (iwe->cmd) {
1529                 case SIOCGIWAP:
1530                         if (!first)
1531                                 wpa_driver_wext_add_scan_entry(res, &data);
1532                         first = 0;
1533                         os_free(data.ie);
1534                         os_memset(&data, 0, sizeof(data));
1535                         os_memcpy(data.res.bssid,
1536                                   iwe->u.ap_addr.sa_data, ETH_ALEN);
1537                         break;
1538                 case SIOCGIWMODE:
1539                         wext_get_scan_mode(iwe, &data);
1540                         break;
1541                 case SIOCGIWESSID:
1542                         wext_get_scan_ssid(iwe, &data, custom, end);
1543                         break;
1544                 case SIOCGIWFREQ:
1545                         wext_get_scan_freq(iwe, &data);
1546                         break;
1547                 case IWEVQUAL:
1548                         wext_get_scan_qual(iwe, &data);
1549                         break;
1550                 case SIOCGIWENCODE:
1551                         wext_get_scan_encode(iwe, &data);
1552                         break;
1553                 case SIOCGIWRATE:
1554                         wext_get_scan_rate(iwe, &data, pos, end);
1555                         break;
1556                 case IWEVGENIE:
1557                         wext_get_scan_iwevgenie(iwe, &data, custom, end);
1558                         break;
1559                 case IWEVCUSTOM:
1560                         wext_get_scan_custom(iwe, &data, custom, end);
1561                         break;
1562                 }
1563
1564                 pos += iwe->len;
1565         }
1566         os_free(res_buf);
1567         res_buf = NULL;
1568         if (!first)
1569                 wpa_driver_wext_add_scan_entry(res, &data);
1570         os_free(data.ie);
1571
1572         wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1573                    (unsigned long) len, (unsigned long) res->num);
1574
1575         return res;
1576 }
1577
1578
1579 static int wpa_driver_wext_get_range(void *priv)
1580 {
1581         struct wpa_driver_wext_data *drv = priv;
1582         struct iw_range *range;
1583         struct iwreq iwr;
1584         int minlen;
1585         size_t buflen;
1586
1587         /*
1588          * Use larger buffer than struct iw_range in order to allow the
1589          * structure to grow in the future.
1590          */
1591         buflen = sizeof(struct iw_range) + 500;
1592         range = os_zalloc(buflen);
1593         if (range == NULL)
1594                 return -1;
1595
1596         os_memset(&iwr, 0, sizeof(iwr));
1597         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1598         iwr.u.data.pointer = (caddr_t) range;
1599         iwr.u.data.length = buflen;
1600
1601         minlen = ((char *) &range->enc_capa) - (char *) range +
1602                 sizeof(range->enc_capa);
1603
1604         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1605                 perror("ioctl[SIOCGIWRANGE]");
1606                 os_free(range);
1607                 return -1;
1608         } else if (iwr.u.data.length >= minlen &&
1609                    range->we_version_compiled >= 18) {
1610                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1611                            "WE(source)=%d enc_capa=0x%x",
1612                            range->we_version_compiled,
1613                            range->we_version_source,
1614                            range->enc_capa);
1615                 drv->has_capability = 1;
1616                 drv->we_version_compiled = range->we_version_compiled;
1617                 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1618                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1619                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1620                 }
1621                 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1622                         drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1623                                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1624                 }
1625                 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1626                         WPA_DRIVER_CAPA_ENC_WEP104;
1627                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1628                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1629                 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1630                         drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1631                 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1632                         drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1633                 drv->capa.max_scan_ssids = 1;
1634
1635                 wpa_printf(MSG_DEBUG, "  capabilities: key_mgmt 0x%x enc 0x%x "
1636                            "flags 0x%x",
1637                            drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1638         } else {
1639                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1640                            "assuming WPA is not supported");
1641         }
1642
1643         os_free(range);
1644         return 0;
1645 }
1646
1647
1648 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1649 {
1650         struct wpa_driver_wext_data *drv = priv;
1651         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1652
1653         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1654                                               enabled);
1655 }
1656
1657
1658 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1659                                    const u8 *psk)
1660 {
1661         struct iw_encode_ext *ext;
1662         struct iwreq iwr;
1663         int ret;
1664
1665         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1666
1667         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1668                 return 0;
1669
1670         if (!psk)
1671                 return 0;
1672
1673         os_memset(&iwr, 0, sizeof(iwr));
1674         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1675
1676         ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1677         if (ext == NULL)
1678                 return -1;
1679
1680         iwr.u.encoding.pointer = (caddr_t) ext;
1681         iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1682         ext->key_len = PMK_LEN;
1683         os_memcpy(&ext->key, psk, ext->key_len);
1684         ext->alg = IW_ENCODE_ALG_PMK;
1685
1686         ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1687         if (ret < 0)
1688                 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1689         os_free(ext);
1690
1691         return ret;
1692 }
1693
1694
1695 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1696                                        const u8 *addr, int key_idx,
1697                                        int set_tx, const u8 *seq,
1698                                        size_t seq_len,
1699                                        const u8 *key, size_t key_len)
1700 {
1701         struct wpa_driver_wext_data *drv = priv;
1702         struct iwreq iwr;
1703         int ret = 0;
1704         struct iw_encode_ext *ext;
1705
1706         if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1707                 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1708                            __FUNCTION__, (unsigned long) seq_len);
1709                 return -1;
1710         }
1711
1712         ext = os_zalloc(sizeof(*ext) + key_len);
1713         if (ext == NULL)
1714                 return -1;
1715         os_memset(&iwr, 0, sizeof(iwr));
1716         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1717         iwr.u.encoding.flags = key_idx + 1;
1718         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1719         if (alg == WPA_ALG_NONE)
1720                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1721         iwr.u.encoding.pointer = (caddr_t) ext;
1722         iwr.u.encoding.length = sizeof(*ext) + key_len;
1723
1724         if (addr == NULL ||
1725             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1726                 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1727         if (set_tx)
1728                 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1729
1730         ext->addr.sa_family = ARPHRD_ETHER;
1731         if (addr)
1732                 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1733         else
1734                 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1735         if (key && key_len) {
1736                 os_memcpy(ext + 1, key, key_len);
1737                 ext->key_len = key_len;
1738         }
1739         switch (alg) {
1740         case WPA_ALG_NONE:
1741                 ext->alg = IW_ENCODE_ALG_NONE;
1742                 break;
1743         case WPA_ALG_WEP:
1744                 ext->alg = IW_ENCODE_ALG_WEP;
1745                 break;
1746         case WPA_ALG_TKIP:
1747                 ext->alg = IW_ENCODE_ALG_TKIP;
1748                 break;
1749         case WPA_ALG_CCMP:
1750                 ext->alg = IW_ENCODE_ALG_CCMP;
1751                 break;
1752         case WPA_ALG_PMK:
1753                 ext->alg = IW_ENCODE_ALG_PMK;
1754                 break;
1755 #ifdef CONFIG_IEEE80211W
1756         case WPA_ALG_IGTK:
1757                 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1758                 break;
1759 #endif /* CONFIG_IEEE80211W */
1760         default:
1761                 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1762                            __FUNCTION__, alg);
1763                 os_free(ext);
1764                 return -1;
1765         }
1766
1767         if (seq && seq_len) {
1768                 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1769                 os_memcpy(ext->rx_seq, seq, seq_len);
1770         }
1771
1772         if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1773                 ret = errno == EOPNOTSUPP ? -2 : -1;
1774                 if (errno == ENODEV) {
1775                         /*
1776                          * ndiswrapper seems to be returning incorrect error
1777                          * code.. */
1778                         ret = -2;
1779                 }
1780
1781                 perror("ioctl[SIOCSIWENCODEEXT]");
1782         }
1783
1784         os_free(ext);
1785         return ret;
1786 }
1787
1788
1789 /**
1790  * wpa_driver_wext_set_key - Configure encryption key
1791  * @priv: Pointer to private wext data from wpa_driver_wext_init()
1792  * @priv: Private driver interface data
1793  * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1794  *      %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1795  * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1796  *      broadcast/default keys
1797  * @key_idx: key index (0..3), usually 0 for unicast keys
1798  * @set_tx: Configure this key as the default Tx key (only used when
1799  *      driver does not support separate unicast/individual key
1800  * @seq: Sequence number/packet number, seq_len octets, the next
1801  *      packet number to be used for in replay protection; configured
1802  *      for Rx keys (in most cases, this is only used with broadcast
1803  *      keys and set to zero for unicast keys)
1804  * @seq_len: Length of the seq, depends on the algorithm:
1805  *      TKIP: 6 octets, CCMP: 6 octets
1806  * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1807  *      8-byte Rx Mic Key
1808  * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1809  *      TKIP: 32, CCMP: 16)
1810  * Returns: 0 on success, -1 on failure
1811  *
1812  * This function uses SIOCSIWENCODEEXT by default, but tries to use
1813  * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1814  */
1815 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1816                             const u8 *addr, int key_idx,
1817                             int set_tx, const u8 *seq, size_t seq_len,
1818                             const u8 *key, size_t key_len)
1819 {
1820         struct wpa_driver_wext_data *drv = priv;
1821         struct iwreq iwr;
1822         int ret = 0;
1823
1824         wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1825                    "key_len=%lu",
1826                    __FUNCTION__, alg, key_idx, set_tx,
1827                    (unsigned long) seq_len, (unsigned long) key_len);
1828
1829         ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1830                                           seq, seq_len, key, key_len);
1831         if (ret == 0)
1832                 return 0;
1833
1834         if (ret == -2 &&
1835             (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1836                 wpa_printf(MSG_DEBUG, "Driver did not support "
1837                            "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1838                 ret = 0;
1839         } else {
1840                 wpa_printf(MSG_DEBUG, "Driver did not support "
1841                            "SIOCSIWENCODEEXT");
1842                 return ret;
1843         }
1844
1845         os_memset(&iwr, 0, sizeof(iwr));
1846         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1847         iwr.u.encoding.flags = key_idx + 1;
1848         iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1849         if (alg == WPA_ALG_NONE)
1850                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1851         iwr.u.encoding.pointer = (caddr_t) key;
1852         iwr.u.encoding.length = key_len;
1853
1854         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1855                 perror("ioctl[SIOCSIWENCODE]");
1856                 ret = -1;
1857         }
1858
1859         if (set_tx && alg != WPA_ALG_NONE) {
1860                 os_memset(&iwr, 0, sizeof(iwr));
1861                 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1862                 iwr.u.encoding.flags = key_idx + 1;
1863                 iwr.u.encoding.flags |= IW_ENCODE_TEMP;
1864                 iwr.u.encoding.pointer = (caddr_t) NULL;
1865                 iwr.u.encoding.length = 0;
1866                 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1867                         perror("ioctl[SIOCSIWENCODE] (set_tx)");
1868                         ret = -1;
1869                 }
1870         }
1871
1872         return ret;
1873 }
1874
1875
1876 static int wpa_driver_wext_set_countermeasures(void *priv,
1877                                                int enabled)
1878 {
1879         struct wpa_driver_wext_data *drv = priv;
1880         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1881         return wpa_driver_wext_set_auth_param(drv,
1882                                               IW_AUTH_TKIP_COUNTERMEASURES,
1883                                               enabled);
1884 }
1885
1886
1887 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1888                                                 int enabled)
1889 {
1890         struct wpa_driver_wext_data *drv = priv;
1891         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1892         drv->use_crypt = enabled;
1893         return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1894                                               enabled);
1895 }
1896
1897
1898 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1899                                 const u8 *addr, int cmd, int reason_code)
1900 {
1901         struct iwreq iwr;
1902         struct iw_mlme mlme;
1903         int ret = 0;
1904
1905         os_memset(&iwr, 0, sizeof(iwr));
1906         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1907         os_memset(&mlme, 0, sizeof(mlme));
1908         mlme.cmd = cmd;
1909         mlme.reason_code = reason_code;
1910         mlme.addr.sa_family = ARPHRD_ETHER;
1911         os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1912         iwr.u.data.pointer = (caddr_t) &mlme;
1913         iwr.u.data.length = sizeof(mlme);
1914
1915         if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1916                 perror("ioctl[SIOCSIWMLME]");
1917                 ret = -1;
1918         }
1919
1920         return ret;
1921 }
1922
1923
1924 static void wpa_driver_wext_disconnect(struct wpa_driver_wext_data *drv)
1925 {
1926         struct iwreq iwr;
1927         const u8 null_bssid[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
1928         u8 ssid[32];
1929         int i;
1930
1931         /*
1932          * Only force-disconnect when the card is in infrastructure mode,
1933          * otherwise the driver might interpret the cleared BSSID and random
1934          * SSID as an attempt to create a new ad-hoc network.
1935          */
1936         os_memset(&iwr, 0, sizeof(iwr));
1937         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1938         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
1939                 perror("ioctl[SIOCGIWMODE]");
1940                 iwr.u.mode = IW_MODE_INFRA;
1941         }
1942
1943         if (iwr.u.mode == IW_MODE_INFRA) {
1944                 /*
1945                  * Clear the BSSID selection and set a random SSID to make sure
1946                  * the driver will not be trying to associate with something
1947                  * even if it does not understand SIOCSIWMLME commands (or
1948                  * tries to associate automatically after deauth/disassoc).
1949                  */
1950                 wpa_driver_wext_set_bssid(drv, null_bssid);
1951
1952                 for (i = 0; i < 32; i++)
1953                         ssid[i] = rand() & 0xFF;
1954                 wpa_driver_wext_set_ssid(drv, ssid, 32);
1955         }
1956 }
1957
1958
1959 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1960                                           int reason_code)
1961 {
1962         struct wpa_driver_wext_data *drv = priv;
1963         int ret;
1964         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1965         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1966         wpa_driver_wext_disconnect(drv);
1967         return ret;
1968 }
1969
1970
1971 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1972                                         int reason_code)
1973 {
1974         struct wpa_driver_wext_data *drv = priv;
1975         int ret;
1976         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1977         ret = wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC, reason_code);
1978         wpa_driver_wext_disconnect(drv);
1979         return ret;
1980 }
1981
1982
1983 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1984                                       size_t ie_len)
1985 {
1986         struct wpa_driver_wext_data *drv = priv;
1987         struct iwreq iwr;
1988         int ret = 0;
1989
1990         os_memset(&iwr, 0, sizeof(iwr));
1991         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1992         iwr.u.data.pointer = (caddr_t) ie;
1993         iwr.u.data.length = ie_len;
1994
1995         if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
1996                 perror("ioctl[SIOCSIWGENIE]");
1997                 ret = -1;
1998         }
1999
2000         return ret;
2001 }
2002
2003
2004 int wpa_driver_wext_cipher2wext(int cipher)
2005 {
2006         switch (cipher) {
2007         case CIPHER_NONE:
2008                 return IW_AUTH_CIPHER_NONE;
2009         case CIPHER_WEP40:
2010                 return IW_AUTH_CIPHER_WEP40;
2011         case CIPHER_TKIP:
2012                 return IW_AUTH_CIPHER_TKIP;
2013         case CIPHER_CCMP:
2014                 return IW_AUTH_CIPHER_CCMP;
2015         case CIPHER_WEP104:
2016                 return IW_AUTH_CIPHER_WEP104;
2017         default:
2018                 return 0;
2019         }
2020 }
2021
2022
2023 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2024 {
2025         switch (keymgmt) {
2026         case KEY_MGMT_802_1X:
2027         case KEY_MGMT_802_1X_NO_WPA:
2028                 return IW_AUTH_KEY_MGMT_802_1X;
2029         case KEY_MGMT_PSK:
2030                 return IW_AUTH_KEY_MGMT_PSK;
2031         default:
2032                 return 0;
2033         }
2034 }
2035
2036
2037 static int
2038 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2039                                   struct wpa_driver_associate_params *params)
2040 {
2041         struct iwreq iwr;
2042         int ret = 0;
2043
2044         wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2045                    "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2046
2047         os_memset(&iwr, 0, sizeof(iwr));
2048         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2049         /* Just changing mode, not actual keys */
2050         iwr.u.encoding.flags = 0;
2051         iwr.u.encoding.pointer = (caddr_t) NULL;
2052         iwr.u.encoding.length = 0;
2053
2054         /*
2055          * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2056          * different things. Here they are used to indicate Open System vs.
2057          * Shared Key authentication algorithm. However, some drivers may use
2058          * them to select between open/restricted WEP encrypted (open = allow
2059          * both unencrypted and encrypted frames; restricted = only allow
2060          * encrypted frames).
2061          */
2062
2063         if (!drv->use_crypt) {
2064                 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2065         } else {
2066                 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2067                         iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2068                 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2069                         iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2070         }
2071
2072         if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2073                 perror("ioctl[SIOCSIWENCODE]");
2074                 ret = -1;
2075         }
2076
2077         return ret;
2078 }
2079
2080
2081 int wpa_driver_wext_associate(void *priv,
2082                               struct wpa_driver_associate_params *params)
2083 {
2084         struct wpa_driver_wext_data *drv = priv;
2085         int ret = 0;
2086         int allow_unencrypted_eapol;
2087         int value;
2088
2089         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2090
2091         /*
2092          * If the driver did not support SIOCSIWAUTH, fallback to
2093          * SIOCSIWENCODE here.
2094          */
2095         if (drv->auth_alg_fallback &&
2096             wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2097                 ret = -1;
2098
2099         if (!params->bssid &&
2100             wpa_driver_wext_set_bssid(drv, NULL) < 0)
2101                 ret = -1;
2102
2103         /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2104          * from configuration, not from here, where only the selected suite is
2105          * available */
2106         if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2107             < 0)
2108                 ret = -1;
2109         if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2110                 value = IW_AUTH_WPA_VERSION_DISABLED;
2111         else if (params->wpa_ie[0] == WLAN_EID_RSN)
2112                 value = IW_AUTH_WPA_VERSION_WPA2;
2113         else
2114                 value = IW_AUTH_WPA_VERSION_WPA;
2115         if (wpa_driver_wext_set_auth_param(drv,
2116                                            IW_AUTH_WPA_VERSION, value) < 0)
2117                 ret = -1;
2118         value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2119         if (wpa_driver_wext_set_auth_param(drv,
2120                                            IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2121                 ret = -1;
2122         value = wpa_driver_wext_cipher2wext(params->group_suite);
2123         if (wpa_driver_wext_set_auth_param(drv,
2124                                            IW_AUTH_CIPHER_GROUP, value) < 0)
2125                 ret = -1;
2126         value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2127         if (wpa_driver_wext_set_auth_param(drv,
2128                                            IW_AUTH_KEY_MGMT, value) < 0)
2129                 ret = -1;
2130         value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2131                 params->pairwise_suite != CIPHER_NONE ||
2132                 params->group_suite != CIPHER_NONE ||
2133                 params->wpa_ie_len;
2134         if (wpa_driver_wext_set_auth_param(drv,
2135                                            IW_AUTH_PRIVACY_INVOKED, value) < 0)
2136                 ret = -1;
2137
2138         /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2139          * not using WPA. IEEE 802.1X specifies that these frames are not
2140          * encrypted, but WPA encrypts them when pairwise keys are in use. */
2141         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2142             params->key_mgmt_suite == KEY_MGMT_PSK)
2143                 allow_unencrypted_eapol = 0;
2144         else
2145                 allow_unencrypted_eapol = 1;
2146
2147         if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2148                 ret = -1;
2149         if (wpa_driver_wext_set_auth_param(drv,
2150                                            IW_AUTH_RX_UNENCRYPTED_EAPOL,
2151                                            allow_unencrypted_eapol) < 0)
2152                 ret = -1;
2153 #ifdef CONFIG_IEEE80211W
2154         switch (params->mgmt_frame_protection) {
2155         case NO_MGMT_FRAME_PROTECTION:
2156                 value = IW_AUTH_MFP_DISABLED;
2157                 break;
2158         case MGMT_FRAME_PROTECTION_OPTIONAL:
2159                 value = IW_AUTH_MFP_OPTIONAL;
2160                 break;
2161         case MGMT_FRAME_PROTECTION_REQUIRED:
2162                 value = IW_AUTH_MFP_REQUIRED;
2163                 break;
2164         };
2165         if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2166                 ret = -1;
2167 #endif /* CONFIG_IEEE80211W */
2168         if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2169                 ret = -1;
2170         if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2171                 ret = -1;
2172         if (params->bssid &&
2173             wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2174                 ret = -1;
2175
2176         return ret;
2177 }
2178
2179
2180 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2181 {
2182         struct wpa_driver_wext_data *drv = priv;
2183         int algs = 0, res;
2184
2185         if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2186                 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2187         if (auth_alg & AUTH_ALG_SHARED_KEY)
2188                 algs |= IW_AUTH_ALG_SHARED_KEY;
2189         if (auth_alg & AUTH_ALG_LEAP)
2190                 algs |= IW_AUTH_ALG_LEAP;
2191         if (algs == 0) {
2192                 /* at least one algorithm should be set */
2193                 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2194         }
2195
2196         res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2197                                              algs);
2198         drv->auth_alg_fallback = res == -2;
2199         return res;
2200 }
2201
2202
2203 /**
2204  * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2205  * @priv: Pointer to private wext data from wpa_driver_wext_init()
2206  * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2207  * Returns: 0 on success, -1 on failure
2208  */
2209 int wpa_driver_wext_set_mode(void *priv, int mode)
2210 {
2211         struct wpa_driver_wext_data *drv = priv;
2212         struct iwreq iwr;
2213         int ret = -1, flags;
2214         unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2215
2216         os_memset(&iwr, 0, sizeof(iwr));
2217         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2218         iwr.u.mode = new_mode;
2219         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2220                 ret = 0;
2221                 goto done;
2222         }
2223
2224         if (errno != EBUSY) {
2225                 perror("ioctl[SIOCSIWMODE]");
2226                 goto done;
2227         }
2228
2229         /* mac80211 doesn't allow mode changes while the device is up, so if
2230          * the device isn't in the mode we're about to change to, take device
2231          * down, try to set the mode again, and bring it back up.
2232          */
2233         if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2234                 perror("ioctl[SIOCGIWMODE]");
2235                 goto done;
2236         }
2237
2238         if (iwr.u.mode == new_mode) {
2239                 ret = 0;
2240                 goto done;
2241         }
2242
2243         if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2244                 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2245
2246                 /* Try to set the mode again while the interface is down */
2247                 iwr.u.mode = new_mode;
2248                 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2249                         perror("ioctl[SIOCSIWMODE]");
2250                 else
2251                         ret = 0;
2252
2253                 /* Ignore return value of get_ifflags to ensure that the device
2254                  * is always up like it was before this function was called.
2255                  */
2256                 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2257                 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2258         }
2259
2260 done:
2261         return ret;
2262 }
2263
2264
2265 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2266                                  u32 cmd, const u8 *bssid, const u8 *pmkid)
2267 {
2268         struct iwreq iwr;
2269         struct iw_pmksa pmksa;
2270         int ret = 0;
2271
2272         os_memset(&iwr, 0, sizeof(iwr));
2273         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2274         os_memset(&pmksa, 0, sizeof(pmksa));
2275         pmksa.cmd = cmd;
2276         pmksa.bssid.sa_family = ARPHRD_ETHER;
2277         if (bssid)
2278                 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2279         if (pmkid)
2280                 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2281         iwr.u.data.pointer = (caddr_t) &pmksa;
2282         iwr.u.data.length = sizeof(pmksa);
2283
2284         if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2285                 if (errno != EOPNOTSUPP)
2286                         perror("ioctl[SIOCSIWPMKSA]");
2287                 ret = -1;
2288         }
2289
2290         return ret;
2291 }
2292
2293
2294 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2295                                      const u8 *pmkid)
2296 {
2297         struct wpa_driver_wext_data *drv = priv;
2298         return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2299 }
2300
2301
2302 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2303                                         const u8 *pmkid)
2304 {
2305         struct wpa_driver_wext_data *drv = priv;
2306         return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2307 }
2308
2309
2310 static int wpa_driver_wext_flush_pmkid(void *priv)
2311 {
2312         struct wpa_driver_wext_data *drv = priv;
2313         return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2314 }
2315
2316
2317 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2318 {
2319         struct wpa_driver_wext_data *drv = priv;
2320         if (!drv->has_capability)
2321                 return -1;
2322         os_memcpy(capa, &drv->capa, sizeof(*capa));
2323         return 0;
2324 }
2325
2326
2327 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2328                                         const char *ifname)
2329 {
2330         if (ifname == NULL) {
2331                 drv->ifindex2 = -1;
2332                 return 0;
2333         }
2334
2335         drv->ifindex2 = if_nametoindex(ifname);
2336         if (drv->ifindex2 <= 0)
2337                 return -1;
2338
2339         wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2340                    "wireless events", drv->ifindex2, ifname);
2341
2342         return 0;
2343 }
2344
2345
2346 int wpa_driver_wext_set_operstate(void *priv, int state)
2347 {
2348         struct wpa_driver_wext_data *drv = priv;
2349
2350         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2351                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2352         drv->operstate = state;
2353         return wpa_driver_wext_send_oper_ifla(
2354                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2355 }
2356
2357
2358 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2359 {
2360         return drv->we_version_compiled;
2361 }
2362
2363
2364 const struct wpa_driver_ops wpa_driver_wext_ops = {
2365         .name = "wext",
2366         .desc = "Linux wireless extensions (generic)",
2367         .get_bssid = wpa_driver_wext_get_bssid,
2368         .get_ssid = wpa_driver_wext_get_ssid,
2369         .set_wpa = wpa_driver_wext_set_wpa,
2370         .set_key = wpa_driver_wext_set_key,
2371         .set_countermeasures = wpa_driver_wext_set_countermeasures,
2372         .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2373         .scan = wpa_driver_wext_scan,
2374         .get_scan_results2 = wpa_driver_wext_get_scan_results,
2375         .deauthenticate = wpa_driver_wext_deauthenticate,
2376         .disassociate = wpa_driver_wext_disassociate,
2377         .set_mode = wpa_driver_wext_set_mode,
2378         .associate = wpa_driver_wext_associate,
2379         .set_auth_alg = wpa_driver_wext_set_auth_alg,
2380         .init = wpa_driver_wext_init,
2381         .deinit = wpa_driver_wext_deinit,
2382         .add_pmkid = wpa_driver_wext_add_pmkid,
2383         .remove_pmkid = wpa_driver_wext_remove_pmkid,
2384         .flush_pmkid = wpa_driver_wext_flush_pmkid,
2385         .get_capa = wpa_driver_wext_get_capa,
2386         .set_operstate = wpa_driver_wext_set_operstate,
2387 };