2 * WPA Supplicant - driver interaction with generic Linux Wireless Extensions
3 * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
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.
22 #include <sys/ioctl.h>
23 #include <net/if_arp.h>
25 #include "wireless_copy.h"
29 #include "priv_netlink.h"
30 #include "driver_wext.h"
31 #include "ieee802_11_defs.h"
32 #include "wpa_common.h"
34 #ifdef CONFIG_CLIENT_MLME
35 #include <netpacket/packet.h>
36 /* old definitions from net/mac80211 */
38 typedef u32 __bitwise __be32;
39 typedef u64 __bitwise __be64;
41 #define PRISM2_IOCTL_PRISM2_PARAM (SIOCIWFIRSTPRIV + 0)
42 #define PRISM2_IOCTL_GET_PRISM2_PARAM (SIOCIWFIRSTPRIV + 1)
43 #define PRISM2_IOCTL_HOSTAPD (SIOCIWFIRSTPRIV + 3)
45 #define PRISM2_PARAM_USER_SPACE_MLME 1045
46 #define PRISM2_PARAM_MGMT_IF 1046
47 #define PRISM2_HOSTAPD_ADD_STA 2
48 #define PRISM2_HOSTAPD_REMOVE_STA 3
49 #define PRISM2_HOSTAPD_GET_HW_FEATURES 1002
50 #define PRISM2_HOSTAPD_MAX_BUF_SIZE 2048
53 #define ALIGNED __attribute__ ((aligned))
56 struct prism2_hostapd_param {
58 u8 sta_addr[ETH_ALEN];
66 #define IEEE80211_STA_DYNAMIC_ENC BIT(0)
73 u8 data[0] ALIGNED; /* num_modes * feature data */
76 u16 mode; /* MODE_* */
77 u16 num_supported_rates;
79 u8 data[0] ALIGNED; /* num_supported_rates * u16 +
80 * num_basic_rates * u16 */
83 u16 mode; /* MODE_* */
86 u8 power_level; /* regulatory limit in dBm */
91 } set_regulatory_domain;
97 u32 burst_time; /* maximum burst time in 0.1 ms, i.e.,
103 struct hostapd_ioctl_hw_modes_hdr {
110 * frame format for the management interface that is slated
111 * to be replaced by "cooked monitor" with radiotap
113 #define IEEE80211_FI_VERSION 0x80211001
114 struct ieee80211_frame_info {
130 /* Note: this structure is otherwise identical to capture format used
131 * in linux-wlan-ng, but this additional field is used to provide meta
132 * data about the frame to hostapd. This was the easiest method for
133 * providing this information, but this might change in the future. */
135 } __attribute__ ((packed));
137 /* old mode definitions */
139 MODE_IEEE80211A = 0 /* IEEE 802.11a */,
140 MODE_IEEE80211B = 1 /* IEEE 802.11b only */,
141 MODE_ATHEROS_TURBO = 2 /* Atheros Turbo mode (2x.11a at 5 GHz) */,
142 MODE_IEEE80211G = 3 /* IEEE 802.11g (and 802.11b compatibility) */,
143 MODE_ATHEROS_TURBOG = 4 /* Atheros Turbo mode (2x.11g at 2.4 GHz) */,
144 NUM_IEEE80211_MODES = 5
148 #define ETH_P_ALL 0x0003
150 #endif /* CONFIG_CLIENT_MLME */
155 static int wpa_driver_wext_flush_pmkid(void *priv);
156 static int wpa_driver_wext_get_range(void *priv);
157 static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv);
160 static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
161 int linkmode, int operstate)
165 struct ifinfomsg ifinfo;
172 os_memset(&req, 0, sizeof(req));
174 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
175 req.hdr.nlmsg_type = RTM_SETLINK;
176 req.hdr.nlmsg_flags = NLM_F_REQUEST;
177 req.hdr.nlmsg_seq = ++nl_seq;
178 req.hdr.nlmsg_pid = 0;
180 req.ifinfo.ifi_family = AF_UNSPEC;
181 req.ifinfo.ifi_type = 0;
182 req.ifinfo.ifi_index = drv->ifindex;
183 req.ifinfo.ifi_flags = 0;
184 req.ifinfo.ifi_change = 0;
186 if (linkmode != -1) {
187 rta = (struct rtattr *)
188 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
189 rta->rta_type = IFLA_LINKMODE;
190 rta->rta_len = RTA_LENGTH(sizeof(char));
191 *((char *) RTA_DATA(rta)) = linkmode;
192 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
193 RTA_LENGTH(sizeof(char));
195 if (operstate != -1) {
196 rta = (struct rtattr *)
197 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
198 rta->rta_type = IFLA_OPERSTATE;
199 rta->rta_len = RTA_LENGTH(sizeof(char));
200 *((char *) RTA_DATA(rta)) = operstate;
201 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
202 RTA_LENGTH(sizeof(char));
205 wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
206 linkmode, operstate);
208 ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0);
210 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
211 "%s (assume operstate is not supported)",
215 return ret < 0 ? -1 : 0;
219 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
225 os_memset(&iwr, 0, sizeof(iwr));
226 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
227 iwr.u.param.flags = idx & IW_AUTH_INDEX;
228 iwr.u.param.value = value;
230 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
231 if (errno != EOPNOTSUPP) {
232 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
233 "value 0x%x) failed: %s)",
234 idx, value, strerror(errno));
236 ret = errno == EOPNOTSUPP ? -2 : -1;
244 * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
245 * @priv: Pointer to private wext data from wpa_driver_wext_init()
246 * @bssid: Buffer for BSSID
247 * Returns: 0 on success, -1 on failure
249 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
251 struct wpa_driver_wext_data *drv = priv;
255 os_memset(&iwr, 0, sizeof(iwr));
256 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
258 if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
259 perror("ioctl[SIOCGIWAP]");
262 os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
269 * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
270 * @priv: Pointer to private wext data from wpa_driver_wext_init()
272 * Returns: 0 on success, -1 on failure
274 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
276 struct wpa_driver_wext_data *drv = priv;
280 os_memset(&iwr, 0, sizeof(iwr));
281 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
282 iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
284 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
286 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
288 if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
289 perror("ioctl[SIOCSIWAP]");
298 * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
299 * @priv: Pointer to private wext data from wpa_driver_wext_init()
300 * @ssid: Buffer for the SSID; must be at least 32 bytes long
301 * Returns: SSID length on success, -1 on failure
303 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
305 struct wpa_driver_wext_data *drv = priv;
309 os_memset(&iwr, 0, sizeof(iwr));
310 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
311 iwr.u.essid.pointer = (caddr_t) ssid;
312 iwr.u.essid.length = 32;
314 if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
315 perror("ioctl[SIOCGIWESSID]");
318 ret = iwr.u.essid.length;
321 /* Some drivers include nul termination in the SSID, so let's
322 * remove it here before further processing. WE-21 changes this
323 * to explicitly require the length _not_ to include nul
325 if (ret > 0 && ssid[ret - 1] == '\0' &&
326 drv->we_version_compiled < 21)
335 * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
336 * @priv: Pointer to private wext data from wpa_driver_wext_init()
338 * @ssid_len: Length of SSID (0..32)
339 * Returns: 0 on success, -1 on failure
341 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
343 struct wpa_driver_wext_data *drv = priv;
351 os_memset(&iwr, 0, sizeof(iwr));
352 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
353 /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
354 iwr.u.essid.flags = (ssid_len != 0);
355 os_memset(buf, 0, sizeof(buf));
356 os_memcpy(buf, ssid, ssid_len);
357 iwr.u.essid.pointer = (caddr_t) buf;
358 if (drv->we_version_compiled < 21) {
359 /* For historic reasons, set SSID length to include one extra
360 * character, C string nul termination, even though SSID is
361 * really an octet string that should not be presented as a C
362 * string. Some Linux drivers decrement the length by one and
363 * can thus end up missing the last octet of the SSID if the
364 * length is not incremented here. WE-21 changes this to
365 * explicitly require the length _not_ to include nul
370 iwr.u.essid.length = ssid_len;
372 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
373 perror("ioctl[SIOCSIWESSID]");
382 * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
383 * @priv: Pointer to private wext data from wpa_driver_wext_init()
384 * @freq: Frequency in MHz
385 * Returns: 0 on success, -1 on failure
387 int wpa_driver_wext_set_freq(void *priv, int freq)
389 struct wpa_driver_wext_data *drv = priv;
393 os_memset(&iwr, 0, sizeof(iwr));
394 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
395 iwr.u.freq.m = freq * 100000;
398 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
399 perror("ioctl[SIOCSIWFREQ]");
408 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
410 union wpa_event_data data;
412 wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
415 os_memset(&data, 0, sizeof(data));
417 if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
418 data.michael_mic_failure.unicast =
419 os_strstr(custom, " unicast ") != NULL;
420 /* TODO: parse parameters(?) */
421 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
422 } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
428 bytes = strspn(spos, "0123456789abcdefABCDEF");
429 if (!bytes || (bytes & 1))
433 data.assoc_info.req_ies = os_malloc(bytes);
434 if (data.assoc_info.req_ies == NULL)
437 data.assoc_info.req_ies_len = bytes;
438 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
442 data.assoc_info.resp_ies = NULL;
443 data.assoc_info.resp_ies_len = 0;
445 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
448 bytes = strspn(spos, "0123456789abcdefABCDEF");
449 if (!bytes || (bytes & 1))
453 data.assoc_info.resp_ies = os_malloc(bytes);
454 if (data.assoc_info.resp_ies == NULL)
457 data.assoc_info.resp_ies_len = bytes;
458 hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
461 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
464 os_free(data.assoc_info.resp_ies);
465 os_free(data.assoc_info.req_ies);
466 #ifdef CONFIG_PEERKEY
467 } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
468 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
469 wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
470 "STKSTART.request '%s'", custom + 17);
473 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
474 #endif /* CONFIG_PEERKEY */
479 static int wpa_driver_wext_event_wireless_michaelmicfailure(
480 void *ctx, const char *ev, size_t len)
482 const struct iw_michaelmicfailure *mic;
483 union wpa_event_data data;
485 if (len < sizeof(*mic))
488 mic = (const struct iw_michaelmicfailure *) ev;
490 wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
491 "flags=0x%x src_addr=" MACSTR, mic->flags,
492 MAC2STR(mic->src_addr.sa_data));
494 os_memset(&data, 0, sizeof(data));
495 data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
496 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
502 static int wpa_driver_wext_event_wireless_pmkidcand(
503 struct wpa_driver_wext_data *drv, const char *ev, size_t len)
505 const struct iw_pmkid_cand *cand;
506 union wpa_event_data data;
509 if (len < sizeof(*cand))
512 cand = (const struct iw_pmkid_cand *) ev;
513 addr = (const u8 *) cand->bssid.sa_data;
515 wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
516 "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
517 cand->index, MAC2STR(addr));
519 os_memset(&data, 0, sizeof(data));
520 os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
521 data.pmkid_candidate.index = cand->index;
522 data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
523 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
529 static int wpa_driver_wext_event_wireless_assocreqie(
530 struct wpa_driver_wext_data *drv, const char *ev, int len)
535 wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
537 os_free(drv->assoc_req_ies);
538 drv->assoc_req_ies = os_malloc(len);
539 if (drv->assoc_req_ies == NULL) {
540 drv->assoc_req_ies_len = 0;
543 os_memcpy(drv->assoc_req_ies, ev, len);
544 drv->assoc_req_ies_len = len;
550 static int wpa_driver_wext_event_wireless_assocrespie(
551 struct wpa_driver_wext_data *drv, const char *ev, int len)
556 wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
558 os_free(drv->assoc_resp_ies);
559 drv->assoc_resp_ies = os_malloc(len);
560 if (drv->assoc_resp_ies == NULL) {
561 drv->assoc_resp_ies_len = 0;
564 os_memcpy(drv->assoc_resp_ies, ev, len);
565 drv->assoc_resp_ies_len = len;
571 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
573 union wpa_event_data data;
575 if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
578 os_memset(&data, 0, sizeof(data));
579 if (drv->assoc_req_ies) {
580 data.assoc_info.req_ies = drv->assoc_req_ies;
581 drv->assoc_req_ies = NULL;
582 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
584 if (drv->assoc_resp_ies) {
585 data.assoc_info.resp_ies = drv->assoc_resp_ies;
586 drv->assoc_resp_ies = NULL;
587 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
590 wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
592 os_free(data.assoc_info.req_ies);
593 os_free(data.assoc_info.resp_ies);
597 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
598 void *ctx, char *data, int len)
600 struct iw_event iwe_buf, *iwe = &iwe_buf;
601 char *pos, *end, *custom, *buf;
606 while (pos + IW_EV_LCP_LEN <= end) {
607 /* Event data may be unaligned, so make a local, aligned copy
608 * before processing. */
609 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
610 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
612 if (iwe->len <= IW_EV_LCP_LEN)
615 custom = pos + IW_EV_POINT_LEN;
616 if (drv->we_version_compiled > 18 &&
617 (iwe->cmd == IWEVMICHAELMICFAILURE ||
618 iwe->cmd == IWEVCUSTOM ||
619 iwe->cmd == IWEVASSOCREQIE ||
620 iwe->cmd == IWEVASSOCRESPIE ||
621 iwe->cmd == IWEVPMKIDCAND)) {
622 /* WE-19 removed the pointer from struct iw_point */
623 char *dpos = (char *) &iwe_buf.u.data.length;
624 int dlen = dpos - (char *) &iwe_buf;
625 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
626 sizeof(struct iw_event) - dlen);
628 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
629 custom += IW_EV_POINT_OFF;
634 wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
636 MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
637 if (is_zero_ether_addr(
638 (const u8 *) iwe->u.ap_addr.sa_data) ||
639 os_memcmp(iwe->u.ap_addr.sa_data,
640 "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
642 os_free(drv->assoc_req_ies);
643 drv->assoc_req_ies = NULL;
644 os_free(drv->assoc_resp_ies);
645 drv->assoc_resp_ies = NULL;
646 wpa_supplicant_event(ctx, EVENT_DISASSOC,
650 wpa_driver_wext_event_assoc_ies(drv);
651 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
654 case IWEVMICHAELMICFAILURE:
655 if (custom + iwe->u.data.length > end) {
656 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
657 "IWEVMICHAELMICFAILURE length");
660 wpa_driver_wext_event_wireless_michaelmicfailure(
661 ctx, custom, iwe->u.data.length);
664 if (custom + iwe->u.data.length > end) {
665 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
666 "IWEVCUSTOM length");
669 buf = os_malloc(iwe->u.data.length + 1);
672 os_memcpy(buf, custom, iwe->u.data.length);
673 buf[iwe->u.data.length] = '\0';
674 wpa_driver_wext_event_wireless_custom(ctx, buf);
678 drv->scan_complete_events = 1;
679 eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
681 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
684 if (custom + iwe->u.data.length > end) {
685 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
686 "IWEVASSOCREQIE length");
689 wpa_driver_wext_event_wireless_assocreqie(
690 drv, custom, iwe->u.data.length);
692 case IWEVASSOCRESPIE:
693 if (custom + iwe->u.data.length > end) {
694 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
695 "IWEVASSOCRESPIE length");
698 wpa_driver_wext_event_wireless_assocrespie(
699 drv, custom, iwe->u.data.length);
702 if (custom + iwe->u.data.length > end) {
703 wpa_printf(MSG_DEBUG, "WEXT: Invalid "
704 "IWEVPMKIDCAND length");
707 wpa_driver_wext_event_wireless_pmkidcand(
708 drv, custom, iwe->u.data.length);
717 static void wpa_driver_wext_event_link(struct wpa_driver_wext_data *drv,
718 void *ctx, char *buf, size_t len,
721 union wpa_event_data event;
723 os_memset(&event, 0, sizeof(event));
724 if (len > sizeof(event.interface_status.ifname))
725 len = sizeof(event.interface_status.ifname) - 1;
726 os_memcpy(event.interface_status.ifname, buf, len);
727 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
728 EVENT_INTERFACE_ADDED;
730 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
732 event.interface_status.ifname,
733 del ? "removed" : "added");
735 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
742 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
746 static int wpa_driver_wext_own_ifname(struct wpa_driver_wext_data *drv,
749 struct ifinfomsg *ifi;
750 int attrlen, nlmsg_len, rta_len;
755 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
757 attrlen = h->nlmsg_len - nlmsg_len;
761 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
763 rta_len = RTA_ALIGN(sizeof(struct rtattr));
764 while (RTA_OK(attr, attrlen)) {
765 if (attr->rta_type == IFLA_IFNAME) {
766 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
772 attr = RTA_NEXT(attr, attrlen);
779 static int wpa_driver_wext_own_ifindex(struct wpa_driver_wext_data *drv,
780 int ifindex, struct nlmsghdr *h)
782 if (drv->ifindex == ifindex || drv->ifindex2 == ifindex)
785 if (drv->if_removed && wpa_driver_wext_own_ifname(drv, h)) {
786 drv->ifindex = if_nametoindex(drv->ifname);
787 wpa_printf(MSG_DEBUG, "WEXT: Update ifindex for a removed "
789 wpa_driver_wext_finish_drv_init(drv);
797 static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
798 void *ctx, struct nlmsghdr *h,
801 struct ifinfomsg *ifi;
802 int attrlen, nlmsg_len, rta_len;
803 struct rtattr * attr;
805 if (len < sizeof(*ifi))
810 if (!wpa_driver_wext_own_ifindex(drv, ifi->ifi_index, h)) {
811 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
816 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
818 drv->operstate, ifi->ifi_flags,
819 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
820 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
821 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
822 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
824 * Some drivers send the association event before the operup event--in
825 * this case, lifting operstate in wpa_driver_wext_set_operstate()
826 * fails. This will hit us when wpa_supplicant does not need to do
827 * IEEE 802.1X authentication
829 if (drv->operstate == 1 &&
830 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
831 !(ifi->ifi_flags & IFF_RUNNING))
832 wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
834 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
836 attrlen = h->nlmsg_len - nlmsg_len;
840 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
842 rta_len = RTA_ALIGN(sizeof(struct rtattr));
843 while (RTA_OK(attr, attrlen)) {
844 if (attr->rta_type == IFLA_WIRELESS) {
845 wpa_driver_wext_event_wireless(
846 drv, ctx, ((char *) attr) + rta_len,
847 attr->rta_len - rta_len);
848 } else if (attr->rta_type == IFLA_IFNAME) {
849 wpa_driver_wext_event_link(drv, ctx,
850 ((char *) attr) + rta_len,
851 attr->rta_len - rta_len, 0);
853 attr = RTA_NEXT(attr, attrlen);
858 static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
859 void *ctx, struct nlmsghdr *h,
862 struct ifinfomsg *ifi;
863 int attrlen, nlmsg_len, rta_len;
864 struct rtattr * attr;
866 if (len < sizeof(*ifi))
871 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
873 attrlen = h->nlmsg_len - nlmsg_len;
877 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
879 rta_len = RTA_ALIGN(sizeof(struct rtattr));
880 while (RTA_OK(attr, attrlen)) {
881 if (attr->rta_type == IFLA_IFNAME) {
882 wpa_driver_wext_event_link(drv, ctx,
883 ((char *) attr) + rta_len,
884 attr->rta_len - rta_len, 1);
886 attr = RTA_NEXT(attr, attrlen);
891 static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
896 struct sockaddr_nl from;
902 fromlen = sizeof(from);
903 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
904 (struct sockaddr *) &from, &fromlen);
906 if (errno != EINTR && errno != EAGAIN)
907 perror("recvfrom(netlink)");
911 h = (struct nlmsghdr *) buf;
912 while (left >= (int) sizeof(*h)) {
916 plen = len - sizeof(*h);
917 if (len > left || plen < 0) {
918 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
919 "len=%d left=%d plen=%d",
924 switch (h->nlmsg_type) {
926 wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
930 wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
935 len = NLMSG_ALIGN(len);
937 h = (struct nlmsghdr *) ((char *) h + len);
941 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
945 if (--max_events > 0) {
947 * Try to receive all events in one eloop call in order to
948 * limit race condition on cases where AssocInfo event, Assoc
949 * event, and EAPOL frames are received more or less at the
950 * same time. We want to process the event messages first
951 * before starting EAPOL processing.
958 static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
959 const char *ifname, int *flags)
963 os_memset(&ifr, 0, sizeof(ifr));
964 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
965 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
966 perror("ioctl[SIOCGIFFLAGS]");
969 *flags = ifr.ifr_flags & 0xffff;
975 * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS)
976 * @drv: driver_wext private data
977 * @flags: Pointer to returned flags value
978 * Returns: 0 on success, -1 on failure
980 int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags)
982 return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags);
986 static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv,
987 const char *ifname, int flags)
991 os_memset(&ifr, 0, sizeof(ifr));
992 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
993 ifr.ifr_flags = flags & 0xffff;
994 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
995 perror("SIOCSIFFLAGS");
1002 #ifdef CONFIG_CLIENT_MLME
1004 static int wpa_driver_prism2_param_set(struct wpa_driver_wext_data *drv,
1005 int param, int value)
1010 os_memset(&iwr, 0, sizeof(iwr));
1011 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1012 i = (int *) iwr.u.name;
1016 return ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr);
1020 static int wpa_driver_prism2_param_get(struct wpa_driver_wext_data *drv,
1026 os_memset(&iwr, 0, sizeof(iwr));
1027 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1028 i = (int *) iwr.u.name;
1031 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_GET_PRISM2_PARAM, &iwr) < 0) {
1032 perror("ioctl[PRISM2_IOCTL_GET_PRISM2_PARAM]");
1039 #endif /* CONFIG_CLIENT_MLME */
1043 * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS)
1044 * @drv: driver_wext private data
1045 * @flags: New value for flags
1046 * Returns: 0 on success, -1 on failure
1048 int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags)
1050 return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags);
1055 * wpa_driver_wext_init - Initialize WE driver interface
1056 * @ctx: context to be used when calling wpa_supplicant functions,
1057 * e.g., wpa_supplicant_event()
1058 * @ifname: interface name, e.g., wlan0
1059 * Returns: Pointer to private data, %NULL on failure
1061 void * wpa_driver_wext_init(void *ctx, const char *ifname)
1064 struct sockaddr_nl local;
1065 struct wpa_driver_wext_data *drv;
1067 drv = os_zalloc(sizeof(*drv));
1071 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1073 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1074 if (drv->ioctl_sock < 0) {
1075 perror("socket(PF_INET,SOCK_DGRAM)");
1080 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1082 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1083 close(drv->ioctl_sock);
1088 os_memset(&local, 0, sizeof(local));
1089 local.nl_family = AF_NETLINK;
1090 local.nl_groups = RTMGRP_LINK;
1091 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1092 perror("bind(netlink)");
1094 close(drv->ioctl_sock);
1099 eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
1100 drv->event_sock = s;
1102 drv->mlme_sock = -1;
1104 wpa_driver_wext_finish_drv_init(drv);
1110 static void wpa_driver_wext_finish_drv_init(struct wpa_driver_wext_data *drv)
1114 if (wpa_driver_wext_get_ifflags(drv, &flags) != 0)
1115 printf("Could not get interface '%s' flags\n", drv->ifname);
1116 else if (!(flags & IFF_UP)) {
1117 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
1118 printf("Could not set interface '%s' UP\n",
1122 * Wait some time to allow driver to initialize before
1123 * starting configuring the driver. This seems to be
1124 * needed at least some drivers that load firmware etc.
1125 * when the interface is set up.
1127 wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
1128 "a second for the driver to complete "
1129 "initialization", drv->ifname);
1135 * Make sure that the driver does not have any obsolete PMKID entries.
1137 wpa_driver_wext_flush_pmkid(drv);
1139 if (wpa_driver_wext_set_mode(drv, 0) < 0) {
1140 printf("Could not configure driver to use managed mode\n");
1143 wpa_driver_wext_get_range(drv);
1145 drv->ifindex = if_nametoindex(drv->ifname);
1147 if (os_strncmp(drv->ifname, "wlan", 4) == 0) {
1149 * Host AP driver may use both wlan# and wifi# interface in
1150 * wireless events. Since some of the versions included WE-18
1151 * support, let's add the alternative ifindex also from
1152 * driver_wext.c for the time being. This may be removed at
1153 * some point once it is believed that old versions of the
1154 * driver are not in use anymore.
1156 char ifname2[IFNAMSIZ + 1];
1157 os_strlcpy(ifname2, drv->ifname, sizeof(ifname2));
1158 os_memcpy(ifname2, "wifi", 4);
1159 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1162 wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1167 * wpa_driver_wext_deinit - Deinitialize WE driver interface
1168 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1170 * Shut down driver interface and processing of driver events. Free
1171 * private data buffer if one was allocated in wpa_driver_wext_init().
1173 void wpa_driver_wext_deinit(void *priv)
1175 struct wpa_driver_wext_data *drv = priv;
1178 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1181 * Clear possibly configured driver parameters in order to make it
1182 * easier to use the driver after wpa_supplicant has been terminated.
1184 (void) wpa_driver_wext_set_bssid(drv,
1185 (u8 *) "\x00\x00\x00\x00\x00\x00");
1187 wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1189 eloop_unregister_read_sock(drv->event_sock);
1190 if (drv->mlme_sock >= 0)
1191 eloop_unregister_read_sock(drv->mlme_sock);
1193 if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1194 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1196 #ifdef CONFIG_CLIENT_MLME
1197 if (drv->mlmedev[0]) {
1198 if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev,
1200 (void) wpa_driver_wext_set_ifflags_ifname(
1201 drv, drv->mlmedev, flags & ~IFF_UP);
1202 wpa_driver_prism2_param_set(drv, PRISM2_PARAM_MGMT_IF, 0);
1203 wpa_driver_prism2_param_set(drv, PRISM2_PARAM_USER_SPACE_MLME,
1206 #endif /* CONFIG_CLIENT_MLME */
1208 close(drv->event_sock);
1209 close(drv->ioctl_sock);
1210 if (drv->mlme_sock >= 0)
1211 close(drv->mlme_sock);
1212 os_free(drv->assoc_req_ies);
1213 os_free(drv->assoc_resp_ies);
1219 * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1220 * @eloop_ctx: Unused
1221 * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1223 * This function can be used as registered timeout when starting a scan to
1224 * generate a scan completed event if the driver does not report this.
1226 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1228 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1229 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1234 * wpa_driver_wext_scan - Request the driver to initiate scan
1235 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1236 * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
1237 * all SSIDs (either active scan with broadcast SSID or passive
1239 * @ssid_len: Length of the SSID
1240 * Returns: 0 on success, -1 on failure
1242 int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len)
1244 struct wpa_driver_wext_data *drv = priv;
1246 int ret = 0, timeout;
1247 struct iw_scan_req req;
1249 if (ssid_len > IW_ESSID_MAX_SIZE) {
1250 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1251 __FUNCTION__, (unsigned long) ssid_len);
1255 os_memset(&iwr, 0, sizeof(iwr));
1256 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1258 if (ssid && ssid_len) {
1259 os_memset(&req, 0, sizeof(req));
1260 req.essid_len = ssid_len;
1261 req.bssid.sa_family = ARPHRD_ETHER;
1262 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1263 os_memcpy(req.essid, ssid, ssid_len);
1264 iwr.u.data.pointer = (caddr_t) &req;
1265 iwr.u.data.length = sizeof(req);
1266 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1269 if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1270 perror("ioctl[SIOCSIWSCAN]");
1274 /* Not all drivers generate "scan completed" wireless event, so try to
1275 * read results after a timeout. */
1277 if (drv->scan_complete_events) {
1279 * The driver seems to deliver SIOCGIWSCAN events to notify
1280 * when scan is complete, so use longer timeout to avoid race
1281 * conditions with scanning and following association request.
1285 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1286 "seconds", ret, timeout);
1287 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1288 eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1295 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1302 res_buf_len = IW_SCAN_MAX_DATA;
1304 res_buf = os_malloc(res_buf_len);
1305 if (res_buf == NULL)
1307 os_memset(&iwr, 0, sizeof(iwr));
1308 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1309 iwr.u.data.pointer = res_buf;
1310 iwr.u.data.length = res_buf_len;
1312 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1315 if (errno == E2BIG && res_buf_len < 100000) {
1319 wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1320 "trying larger buffer (%lu bytes)",
1321 (unsigned long) res_buf_len);
1323 perror("ioctl[SIOCGIWSCAN]");
1329 if (iwr.u.data.length > res_buf_len) {
1333 *len = iwr.u.data.length;
1340 * Data structure for collecting WEXT scan results. This is needed to allow
1341 * the various methods of reporting IEs to be combined into a single IE buffer.
1343 struct wext_scan_data {
1344 struct wpa_scan_res res;
1353 static void wext_get_scan_mode(struct iw_event *iwe,
1354 struct wext_scan_data *res)
1356 if (iwe->u.mode == IW_MODE_ADHOC)
1357 res->res.caps |= IEEE80211_CAP_IBSS;
1358 else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1359 res->res.caps |= IEEE80211_CAP_ESS;
1363 static void wext_get_scan_ssid(struct iw_event *iwe,
1364 struct wext_scan_data *res, char *custom,
1367 int ssid_len = iwe->u.essid.length;
1368 if (custom + ssid_len > end)
1370 if (iwe->u.essid.flags &&
1372 ssid_len <= IW_ESSID_MAX_SIZE) {
1373 os_memcpy(res->ssid, custom, ssid_len);
1374 res->ssid_len = ssid_len;
1379 static void wext_get_scan_freq(struct iw_event *iwe,
1380 struct wext_scan_data *res)
1382 int divi = 1000000, i;
1384 if (iwe->u.freq.e == 0) {
1386 * Some drivers do not report frequency, but a channel.
1387 * Try to map this to frequency by assuming they are using
1388 * IEEE 802.11b/g. But don't overwrite a previously parsed
1389 * frequency if the driver sends both frequency and channel,
1390 * since the driver may be sending an A-band channel that we
1391 * don't handle here.
1397 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1398 res->res.freq = 2407 + 5 * iwe->u.freq.m;
1400 } else if (iwe->u.freq.m == 14) {
1401 res->res.freq = 2484;
1406 if (iwe->u.freq.e > 6) {
1407 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1408 MACSTR " m=%d e=%d)",
1409 MAC2STR(res->res.bssid), iwe->u.freq.m,
1414 for (i = 0; i < iwe->u.freq.e; i++)
1416 res->res.freq = iwe->u.freq.m / divi;
1420 static void wext_get_scan_qual(struct iw_event *iwe,
1421 struct wext_scan_data *res)
1423 res->res.qual = iwe->u.qual.qual;
1424 res->res.noise = iwe->u.qual.noise;
1425 res->res.level = iwe->u.qual.level;
1429 static void wext_get_scan_encode(struct iw_event *iwe,
1430 struct wext_scan_data *res)
1432 if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1433 res->res.caps |= IEEE80211_CAP_PRIVACY;
1437 static void wext_get_scan_rate(struct iw_event *iwe,
1438 struct wext_scan_data *res, char *pos,
1442 char *custom = pos + IW_EV_LCP_LEN;
1447 if (custom + clen > end)
1450 while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1451 /* Note: may be misaligned, make a local, aligned copy */
1452 os_memcpy(&p, custom, sizeof(struct iw_param));
1453 if (p.value > maxrate)
1455 clen -= sizeof(struct iw_param);
1456 custom += sizeof(struct iw_param);
1459 /* Convert the maxrate from WE-style (b/s units) to
1460 * 802.11 rates (500000 b/s units).
1462 res->maxrate = maxrate / 500000;
1466 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1467 struct wext_scan_data *res, char *custom,
1470 char *genie, *gpos, *gend;
1473 if (iwe->u.data.length == 0)
1476 gpos = genie = custom;
1477 gend = genie + iwe->u.data.length;
1479 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1483 tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1486 os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1488 res->ie_len += gend - gpos;
1492 static void wext_get_scan_custom(struct iw_event *iwe,
1493 struct wext_scan_data *res, char *custom,
1499 clen = iwe->u.data.length;
1500 if (custom + clen > end)
1503 if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1507 bytes = custom + clen - spos;
1508 if (bytes & 1 || bytes == 0)
1511 tmp = os_realloc(res->ie, res->ie_len + bytes);
1514 hexstr2bin(spos, tmp + res->ie_len, bytes);
1516 res->ie_len += bytes;
1517 } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1521 bytes = custom + clen - spos;
1522 if (bytes & 1 || bytes == 0)
1525 tmp = os_realloc(res->ie, res->ie_len + bytes);
1528 hexstr2bin(spos, tmp + res->ie_len, bytes);
1530 res->ie_len += bytes;
1531 } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1536 bytes = custom + clen - spos;
1538 wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1542 hexstr2bin(spos, bin, bytes);
1543 res->res.tsf += WPA_GET_BE64(bin);
1548 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1550 return drv->we_version_compiled > 18 &&
1551 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1552 cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1556 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1557 struct wext_scan_data *data)
1559 struct wpa_scan_res **tmp;
1560 struct wpa_scan_res *r;
1562 u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1564 /* Figure out whether we need to fake any IEs */
1566 end = pos + data->ie_len;
1567 while (pos && pos + 1 < end) {
1568 if (pos + 2 + pos[1] > end)
1570 if (pos[0] == WLAN_EID_SSID)
1572 else if (pos[0] == WLAN_EID_SUPP_RATES)
1574 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1580 if (ssid_ie == NULL)
1581 extra_len += 2 + data->ssid_len;
1582 if (rate_ie == NULL && data->maxrate)
1585 r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1588 os_memcpy(r, &data->res, sizeof(*r));
1589 r->ie_len = extra_len + data->ie_len;
1590 pos = (u8 *) (r + 1);
1591 if (ssid_ie == NULL) {
1593 * Generate a fake SSID IE since the driver did not report
1596 *pos++ = WLAN_EID_SSID;
1597 *pos++ = data->ssid_len;
1598 os_memcpy(pos, data->ssid, data->ssid_len);
1599 pos += data->ssid_len;
1601 if (rate_ie == NULL && data->maxrate) {
1603 * Generate a fake Supported Rates IE since the driver did not
1604 * report a full IE list.
1606 *pos++ = WLAN_EID_SUPP_RATES;
1608 *pos++ = data->maxrate;
1611 os_memcpy(pos, data->ie, data->ie_len);
1613 tmp = os_realloc(res->res,
1614 (res->num + 1) * sizeof(struct wpa_scan_res *));
1619 tmp[res->num++] = r;
1625 * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1626 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1627 * Returns: Scan results on success, -1 on failure
1629 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1631 struct wpa_driver_wext_data *drv = priv;
1632 size_t ap_num = 0, len;
1635 struct iw_event iwe_buf, *iwe = &iwe_buf;
1636 char *pos, *end, *custom;
1637 struct wpa_scan_results *res;
1638 struct wext_scan_data data;
1640 res_buf = wpa_driver_wext_giwscan(drv, &len);
1641 if (res_buf == NULL)
1647 res = os_zalloc(sizeof(*res));
1653 pos = (char *) res_buf;
1654 end = (char *) res_buf + len;
1655 os_memset(&data, 0, sizeof(data));
1657 while (pos + IW_EV_LCP_LEN <= end) {
1658 /* Event data may be unaligned, so make a local, aligned copy
1659 * before processing. */
1660 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1661 if (iwe->len <= IW_EV_LCP_LEN)
1664 custom = pos + IW_EV_POINT_LEN;
1665 if (wext_19_iw_point(drv, iwe->cmd)) {
1666 /* WE-19 removed the pointer from struct iw_point */
1667 char *dpos = (char *) &iwe_buf.u.data.length;
1668 int dlen = dpos - (char *) &iwe_buf;
1669 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1670 sizeof(struct iw_event) - dlen);
1672 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1673 custom += IW_EV_POINT_OFF;
1679 wpa_driver_wext_add_scan_entry(res, &data);
1682 os_memset(&data, 0, sizeof(data));
1683 os_memcpy(data.res.bssid,
1684 iwe->u.ap_addr.sa_data, ETH_ALEN);
1687 wext_get_scan_mode(iwe, &data);
1690 wext_get_scan_ssid(iwe, &data, custom, end);
1693 wext_get_scan_freq(iwe, &data);
1696 wext_get_scan_qual(iwe, &data);
1699 wext_get_scan_encode(iwe, &data);
1702 wext_get_scan_rate(iwe, &data, pos, end);
1705 wext_get_scan_iwevgenie(iwe, &data, custom, end);
1708 wext_get_scan_custom(iwe, &data, custom, end);
1717 wpa_driver_wext_add_scan_entry(res, &data);
1720 wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1721 (unsigned long) len, (unsigned long) res->num);
1727 static int wpa_driver_wext_get_range(void *priv)
1729 struct wpa_driver_wext_data *drv = priv;
1730 struct iw_range *range;
1736 * Use larger buffer than struct iw_range in order to allow the
1737 * structure to grow in the future.
1739 buflen = sizeof(struct iw_range) + 500;
1740 range = os_zalloc(buflen);
1744 os_memset(&iwr, 0, sizeof(iwr));
1745 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1746 iwr.u.data.pointer = (caddr_t) range;
1747 iwr.u.data.length = buflen;
1749 minlen = ((char *) &range->enc_capa) - (char *) range +
1750 sizeof(range->enc_capa);
1752 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1753 perror("ioctl[SIOCGIWRANGE]");
1756 } else if (iwr.u.data.length >= minlen &&
1757 range->we_version_compiled >= 18) {
1758 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1759 "WE(source)=%d enc_capa=0x%x",
1760 range->we_version_compiled,
1761 range->we_version_source,
1763 drv->has_capability = 1;
1764 drv->we_version_compiled = range->we_version_compiled;
1765 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1766 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1767 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1769 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1770 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1771 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1773 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1774 WPA_DRIVER_CAPA_ENC_WEP104;
1775 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1776 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1777 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1778 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1779 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1780 drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1782 wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x "
1784 drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1786 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1787 "assuming WPA is not supported");
1795 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1797 struct wpa_driver_wext_data *drv = priv;
1798 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1800 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1805 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1808 struct iw_encode_ext *ext;
1812 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1814 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1820 os_memset(&iwr, 0, sizeof(iwr));
1821 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1823 ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1827 iwr.u.encoding.pointer = (caddr_t) ext;
1828 iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1829 ext->key_len = PMK_LEN;
1830 os_memcpy(&ext->key, psk, ext->key_len);
1831 ext->alg = IW_ENCODE_ALG_PMK;
1833 ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1835 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1842 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1843 const u8 *addr, int key_idx,
1844 int set_tx, const u8 *seq,
1846 const u8 *key, size_t key_len)
1848 struct wpa_driver_wext_data *drv = priv;
1851 struct iw_encode_ext *ext;
1853 if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1854 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1855 __FUNCTION__, (unsigned long) seq_len);
1859 ext = os_zalloc(sizeof(*ext) + key_len);
1862 os_memset(&iwr, 0, sizeof(iwr));
1863 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1864 iwr.u.encoding.flags = key_idx + 1;
1865 if (alg == WPA_ALG_NONE)
1866 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1867 iwr.u.encoding.pointer = (caddr_t) ext;
1868 iwr.u.encoding.length = sizeof(*ext) + key_len;
1871 os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1872 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1874 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1876 ext->addr.sa_family = ARPHRD_ETHER;
1878 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1880 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1881 if (key && key_len) {
1882 os_memcpy(ext + 1, key, key_len);
1883 ext->key_len = key_len;
1887 ext->alg = IW_ENCODE_ALG_NONE;
1890 ext->alg = IW_ENCODE_ALG_WEP;
1893 ext->alg = IW_ENCODE_ALG_TKIP;
1896 ext->alg = IW_ENCODE_ALG_CCMP;
1899 ext->alg = IW_ENCODE_ALG_PMK;
1901 #ifdef WEXT_MFP_PENDING
1902 #ifdef CONFIG_IEEE80211W
1904 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1906 #endif /* CONFIG_IEEE80211W */
1907 #endif /* WEXT_MFP_PENDING */
1909 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1915 if (seq && seq_len) {
1916 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1917 os_memcpy(ext->rx_seq, seq, seq_len);
1920 if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1921 ret = errno == EOPNOTSUPP ? -2 : -1;
1922 if (errno == ENODEV) {
1924 * ndiswrapper seems to be returning incorrect error
1929 perror("ioctl[SIOCSIWENCODEEXT]");
1938 * wpa_driver_wext_set_key - Configure encryption key
1939 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1940 * @priv: Private driver interface data
1941 * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1942 * %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1943 * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1944 * broadcast/default keys
1945 * @key_idx: key index (0..3), usually 0 for unicast keys
1946 * @set_tx: Configure this key as the default Tx key (only used when
1947 * driver does not support separate unicast/individual key
1948 * @seq: Sequence number/packet number, seq_len octets, the next
1949 * packet number to be used for in replay protection; configured
1950 * for Rx keys (in most cases, this is only used with broadcast
1951 * keys and set to zero for unicast keys)
1952 * @seq_len: Length of the seq, depends on the algorithm:
1953 * TKIP: 6 octets, CCMP: 6 octets
1954 * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1956 * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1957 * TKIP: 32, CCMP: 16)
1958 * Returns: 0 on success, -1 on failure
1960 * This function uses SIOCSIWENCODEEXT by default, but tries to use
1961 * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1963 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1964 const u8 *addr, int key_idx,
1965 int set_tx, const u8 *seq, size_t seq_len,
1966 const u8 *key, size_t key_len)
1968 struct wpa_driver_wext_data *drv = priv;
1972 wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1974 __FUNCTION__, alg, key_idx, set_tx,
1975 (unsigned long) seq_len, (unsigned long) key_len);
1977 ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1978 seq, seq_len, key, key_len);
1983 (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1984 wpa_printf(MSG_DEBUG, "Driver did not support "
1985 "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1988 wpa_printf(MSG_DEBUG, "Driver did not support "
1989 "SIOCSIWENCODEEXT");
1993 os_memset(&iwr, 0, sizeof(iwr));
1994 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1995 iwr.u.encoding.flags = key_idx + 1;
1996 if (alg == WPA_ALG_NONE)
1997 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1998 iwr.u.encoding.pointer = (caddr_t) key;
1999 iwr.u.encoding.length = key_len;
2001 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2002 perror("ioctl[SIOCSIWENCODE]");
2006 if (set_tx && alg != WPA_ALG_NONE) {
2007 os_memset(&iwr, 0, sizeof(iwr));
2008 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2009 iwr.u.encoding.flags = key_idx + 1;
2010 iwr.u.encoding.pointer = (caddr_t) NULL;
2011 iwr.u.encoding.length = 0;
2012 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2013 perror("ioctl[SIOCSIWENCODE] (set_tx)");
2022 static int wpa_driver_wext_set_countermeasures(void *priv,
2025 struct wpa_driver_wext_data *drv = priv;
2026 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2027 return wpa_driver_wext_set_auth_param(drv,
2028 IW_AUTH_TKIP_COUNTERMEASURES,
2033 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
2036 struct wpa_driver_wext_data *drv = priv;
2037 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2038 drv->use_crypt = enabled;
2039 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
2044 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
2045 const u8 *addr, int cmd, int reason_code)
2048 struct iw_mlme mlme;
2051 os_memset(&iwr, 0, sizeof(iwr));
2052 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2053 os_memset(&mlme, 0, sizeof(mlme));
2055 mlme.reason_code = reason_code;
2056 mlme.addr.sa_family = ARPHRD_ETHER;
2057 os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
2058 iwr.u.data.pointer = (caddr_t) &mlme;
2059 iwr.u.data.length = sizeof(mlme);
2061 if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
2062 perror("ioctl[SIOCSIWMLME]");
2070 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
2073 struct wpa_driver_wext_data *drv = priv;
2074 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2075 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
2079 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
2082 struct wpa_driver_wext_data *drv = priv;
2083 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2084 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC,
2089 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
2092 struct wpa_driver_wext_data *drv = priv;
2096 os_memset(&iwr, 0, sizeof(iwr));
2097 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2098 iwr.u.data.pointer = (caddr_t) ie;
2099 iwr.u.data.length = ie_len;
2101 if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
2102 perror("ioctl[SIOCSIWGENIE]");
2110 int wpa_driver_wext_cipher2wext(int cipher)
2114 return IW_AUTH_CIPHER_NONE;
2116 return IW_AUTH_CIPHER_WEP40;
2118 return IW_AUTH_CIPHER_TKIP;
2120 return IW_AUTH_CIPHER_CCMP;
2122 return IW_AUTH_CIPHER_WEP104;
2129 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2132 case KEY_MGMT_802_1X:
2133 case KEY_MGMT_802_1X_NO_WPA:
2134 return IW_AUTH_KEY_MGMT_802_1X;
2136 return IW_AUTH_KEY_MGMT_PSK;
2144 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2145 struct wpa_driver_associate_params *params)
2150 wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2151 "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2153 os_memset(&iwr, 0, sizeof(iwr));
2154 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2155 /* Just changing mode, not actual keys */
2156 iwr.u.encoding.flags = 0;
2157 iwr.u.encoding.pointer = (caddr_t) NULL;
2158 iwr.u.encoding.length = 0;
2161 * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2162 * different things. Here they are used to indicate Open System vs.
2163 * Shared Key authentication algorithm. However, some drivers may use
2164 * them to select between open/restricted WEP encrypted (open = allow
2165 * both unencrypted and encrypted frames; restricted = only allow
2166 * encrypted frames).
2169 if (!drv->use_crypt) {
2170 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2172 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2173 iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2174 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2175 iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2178 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2179 perror("ioctl[SIOCSIWENCODE]");
2187 int wpa_driver_wext_associate(void *priv,
2188 struct wpa_driver_associate_params *params)
2190 struct wpa_driver_wext_data *drv = priv;
2192 int allow_unencrypted_eapol;
2195 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2198 * If the driver did not support SIOCSIWAUTH, fallback to
2199 * SIOCSIWENCODE here.
2201 if (drv->auth_alg_fallback &&
2202 wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2205 if (!params->bssid &&
2206 wpa_driver_wext_set_bssid(drv, NULL) < 0)
2209 if (wpa_driver_wext_set_mode(drv, params->mode) < 0)
2211 /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2212 * from configuration, not from here, where only the selected suite is
2214 if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2217 if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2218 value = IW_AUTH_WPA_VERSION_DISABLED;
2219 else if (params->wpa_ie[0] == WLAN_EID_RSN)
2220 value = IW_AUTH_WPA_VERSION_WPA2;
2222 value = IW_AUTH_WPA_VERSION_WPA;
2223 if (wpa_driver_wext_set_auth_param(drv,
2224 IW_AUTH_WPA_VERSION, value) < 0)
2226 value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2227 if (wpa_driver_wext_set_auth_param(drv,
2228 IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2230 value = wpa_driver_wext_cipher2wext(params->group_suite);
2231 if (wpa_driver_wext_set_auth_param(drv,
2232 IW_AUTH_CIPHER_GROUP, value) < 0)
2234 value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2235 if (wpa_driver_wext_set_auth_param(drv,
2236 IW_AUTH_KEY_MGMT, value) < 0)
2238 value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2239 params->pairwise_suite != CIPHER_NONE ||
2240 params->group_suite != CIPHER_NONE ||
2242 if (wpa_driver_wext_set_auth_param(drv,
2243 IW_AUTH_PRIVACY_INVOKED, value) < 0)
2246 /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2247 * not using WPA. IEEE 802.1X specifies that these frames are not
2248 * encrypted, but WPA encrypts them when pairwise keys are in use. */
2249 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2250 params->key_mgmt_suite == KEY_MGMT_PSK)
2251 allow_unencrypted_eapol = 0;
2253 allow_unencrypted_eapol = 1;
2255 if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2257 if (wpa_driver_wext_set_auth_param(drv,
2258 IW_AUTH_RX_UNENCRYPTED_EAPOL,
2259 allow_unencrypted_eapol) < 0)
2261 #ifdef WEXT_MFP_PENDING
2262 #ifdef CONFIG_IEEE80211W
2263 switch (params->mgmt_frame_protection) {
2264 case NO_MGMT_FRAME_PROTECTION:
2265 value = IW_AUTH_MFP_DISABLED;
2267 case MGMT_FRAME_PROTECTION_OPTIONAL:
2268 value = IW_AUTH_MFP_OPTIONAL;
2270 case MGMT_FRAME_PROTECTION_REQUIRED:
2271 value = IW_AUTH_MFP_REQUIRED;
2274 if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2276 #endif /* CONFIG_IEEE80211W */
2277 #endif /* WEXT_MFP_PENDING */
2278 if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2280 if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2282 if (params->bssid &&
2283 wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2290 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2292 struct wpa_driver_wext_data *drv = priv;
2295 if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2296 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2297 if (auth_alg & AUTH_ALG_SHARED_KEY)
2298 algs |= IW_AUTH_ALG_SHARED_KEY;
2299 if (auth_alg & AUTH_ALG_LEAP)
2300 algs |= IW_AUTH_ALG_LEAP;
2302 /* at least one algorithm should be set */
2303 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2306 res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2308 drv->auth_alg_fallback = res == -2;
2314 * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2315 * @priv: Pointer to private wext data from wpa_driver_wext_init()
2316 * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2317 * Returns: 0 on success, -1 on failure
2319 int wpa_driver_wext_set_mode(void *priv, int mode)
2321 struct wpa_driver_wext_data *drv = priv;
2323 int ret = -1, flags;
2324 unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2326 os_memset(&iwr, 0, sizeof(iwr));
2327 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2328 iwr.u.mode = new_mode;
2329 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2334 if (errno != EBUSY) {
2335 perror("ioctl[SIOCSIWMODE]");
2339 /* mac80211 doesn't allow mode changes while the device is up, so if
2340 * the device isn't in the mode we're about to change to, take device
2341 * down, try to set the mode again, and bring it back up.
2343 if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2344 perror("ioctl[SIOCGIWMODE]");
2348 if (iwr.u.mode == new_mode) {
2353 if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2354 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2356 /* Try to set the mode again while the interface is down */
2357 iwr.u.mode = new_mode;
2358 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2359 perror("ioctl[SIOCSIWMODE]");
2363 /* Ignore return value of get_ifflags to ensure that the device
2364 * is always up like it was before this function was called.
2366 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2367 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2375 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2376 u32 cmd, const u8 *bssid, const u8 *pmkid)
2379 struct iw_pmksa pmksa;
2382 os_memset(&iwr, 0, sizeof(iwr));
2383 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2384 os_memset(&pmksa, 0, sizeof(pmksa));
2386 pmksa.bssid.sa_family = ARPHRD_ETHER;
2388 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2390 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2391 iwr.u.data.pointer = (caddr_t) &pmksa;
2392 iwr.u.data.length = sizeof(pmksa);
2394 if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2395 if (errno != EOPNOTSUPP)
2396 perror("ioctl[SIOCSIWPMKSA]");
2404 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2407 struct wpa_driver_wext_data *drv = priv;
2408 return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2412 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2415 struct wpa_driver_wext_data *drv = priv;
2416 return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2420 static int wpa_driver_wext_flush_pmkid(void *priv)
2422 struct wpa_driver_wext_data *drv = priv;
2423 return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2427 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2429 struct wpa_driver_wext_data *drv = priv;
2430 if (!drv->has_capability)
2432 os_memcpy(capa, &drv->capa, sizeof(*capa));
2437 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2440 if (ifname == NULL) {
2445 drv->ifindex2 = if_nametoindex(ifname);
2446 if (drv->ifindex2 <= 0)
2449 wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2450 "wireless events", drv->ifindex2, ifname);
2456 int wpa_driver_wext_set_operstate(void *priv, int state)
2458 struct wpa_driver_wext_data *drv = priv;
2460 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2461 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2462 drv->operstate = state;
2463 return wpa_driver_wext_send_oper_ifla(
2464 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2468 #ifdef CONFIG_CLIENT_MLME
2469 static int hostapd_ioctl(struct wpa_driver_wext_data *drv,
2470 struct prism2_hostapd_param *param, int len)
2474 os_memset(&iwr, 0, sizeof(iwr));
2475 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2476 iwr.u.data.pointer = (caddr_t) param;
2477 iwr.u.data.length = len;
2479 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
2480 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2488 static struct wpa_hw_modes *
2489 wpa_driver_wext_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2491 struct wpa_driver_wext_data *drv = priv;
2492 struct prism2_hostapd_param *param;
2494 struct wpa_hw_modes *modes = NULL;
2497 param = os_zalloc(PRISM2_HOSTAPD_MAX_BUF_SIZE);
2500 param->cmd = PRISM2_HOSTAPD_GET_HW_FEATURES;
2502 if (hostapd_ioctl(drv, param, PRISM2_HOSTAPD_MAX_BUF_SIZE) < 0) {
2503 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2507 *num_modes = param->u.hw_features.num_modes;
2508 *flags = param->u.hw_features.flags;
2510 pos = param->u.hw_features.data;
2511 end = pos + PRISM2_HOSTAPD_MAX_BUF_SIZE -
2512 (param->u.hw_features.data - (u8 *) param);
2514 modes = os_zalloc(*num_modes * sizeof(struct wpa_hw_modes));
2518 for (i = 0; i < *num_modes; i++) {
2519 struct hostapd_ioctl_hw_modes_hdr *hdr;
2520 struct wpa_hw_modes *feature;
2523 hdr = (struct hostapd_ioctl_hw_modes_hdr *) pos;
2524 pos = (u8 *) (hdr + 1);
2525 clen = hdr->num_channels * sizeof(struct wpa_channel_data);
2526 rlen = hdr->num_rates * sizeof(struct wpa_rate_data);
2528 feature = &modes[i];
2529 switch (hdr->mode) {
2530 case MODE_IEEE80211A:
2531 feature->mode = WPA_MODE_IEEE80211A;
2533 case MODE_IEEE80211B:
2534 feature->mode = WPA_MODE_IEEE80211B;
2536 case MODE_IEEE80211G:
2537 feature->mode = WPA_MODE_IEEE80211G;
2539 case MODE_ATHEROS_TURBO:
2540 case MODE_ATHEROS_TURBOG:
2541 wpa_printf(MSG_ERROR, "Skip unsupported hw_mode=%d in "
2542 "get_hw_features data", hdr->mode);
2546 wpa_printf(MSG_ERROR, "Unknown hw_mode=%d in "
2547 "get_hw_features data", hdr->mode);
2548 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2552 feature->num_channels = hdr->num_channels;
2553 feature->num_rates = hdr->num_rates;
2555 feature->channels = os_malloc(clen);
2556 feature->rates = os_malloc(rlen);
2557 if (!feature->channels || !feature->rates ||
2558 pos + clen + rlen > end) {
2559 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2564 os_memcpy(feature->channels, pos, clen);
2566 os_memcpy(feature->rates, pos, rlen);
2576 int wpa_driver_wext_set_channel(void *priv, wpa_hw_mode phymode, int chan,
2579 return wpa_driver_wext_set_freq(priv, freq);
2583 static void wpa_driver_wext_mlme_read(int sock, void *eloop_ctx,
2586 struct wpa_driver_wext_data *drv = eloop_ctx;
2588 unsigned char buf[3000];
2589 struct ieee80211_frame_info *fi;
2590 struct ieee80211_rx_status rx_status;
2592 len = recv(sock, buf, sizeof(buf), 0);
2594 perror("recv[MLME]");
2598 if (len < (int) sizeof(struct ieee80211_frame_info)) {
2599 wpa_printf(MSG_DEBUG, "WEXT: Too short MLME frame (len=%d)",
2604 fi = (struct ieee80211_frame_info *) buf;
2605 if (ntohl(fi->version) != IEEE80211_FI_VERSION) {
2606 wpa_printf(MSG_DEBUG, "WEXT: Invalid MLME frame info version "
2607 "0x%x", ntohl(fi->version));
2611 os_memset(&rx_status, 0, sizeof(rx_status));
2612 rx_status.ssi = ntohl(fi->ssi_signal);
2613 rx_status.channel = ntohl(fi->channel);
2615 wpa_supplicant_sta_rx(drv->ctx,
2616 buf + sizeof(struct ieee80211_frame_info),
2617 len - sizeof(struct ieee80211_frame_info),
2622 static int wpa_driver_wext_open_mlme(struct wpa_driver_wext_data *drv)
2624 int flags, ifindex, s;
2625 struct sockaddr_ll addr;
2628 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_USER_SPACE_MLME, 1) <
2630 wpa_printf(MSG_ERROR, "WEXT: Failed to configure driver to "
2631 "use user space MLME");
2635 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_MGMT_IF, 1) < 0) {
2636 wpa_printf(MSG_ERROR, "WEXT: Failed to add management "
2637 "interface for user space MLME");
2641 ifindex = wpa_driver_prism2_param_get(drv, PRISM2_PARAM_MGMT_IF);
2643 wpa_printf(MSG_ERROR, "WEXT: MLME management device not "
2648 os_memset(&ifr, 0, sizeof(ifr));
2649 ifr.ifr_ifindex = ifindex;
2650 if (ioctl(drv->ioctl_sock, SIOCGIFNAME, &ifr) != 0) {
2651 perror("ioctl(SIOCGIFNAME)");
2654 os_strlcpy(drv->mlmedev, ifr.ifr_name, sizeof(drv->mlmedev));
2655 wpa_printf(MSG_DEBUG, "WEXT: MLME management device '%s'",
2658 if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev, &flags) != 0
2659 || wpa_driver_wext_set_ifflags_ifname(drv, drv->mlmedev,
2660 flags | IFF_UP) != 0) {
2661 wpa_printf(MSG_ERROR, "WEXT: Could not set interface "
2662 "'%s' UP", drv->mlmedev);
2666 s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2668 perror("socket[PF_PACKET,SOCK_RAW]");
2672 os_memset(&addr, 0, sizeof(addr));
2673 addr.sll_family = AF_PACKET;
2674 addr.sll_ifindex = ifindex;
2676 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2677 perror("bind(MLME)");
2681 if (eloop_register_read_sock(s, wpa_driver_wext_mlme_read, drv, NULL))
2683 wpa_printf(MSG_ERROR, "WEXT: Could not register MLME read "
2693 static int wpa_driver_wext_send_mlme(void *priv, const u8 *data,
2696 struct wpa_driver_wext_data *drv = priv;
2699 ret = send(drv->mlme_sock, data, data_len, 0);
2701 perror("send[MLME]");
2709 static int wpa_driver_wext_mlme_add_sta(void *priv, const u8 *addr,
2710 const u8 *supp_rates,
2711 size_t supp_rates_len)
2713 struct wpa_driver_wext_data *drv = priv;
2714 struct prism2_hostapd_param param;
2717 os_memset(¶m, 0, sizeof(param));
2718 param.cmd = PRISM2_HOSTAPD_ADD_STA;
2719 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2720 len = supp_rates_len;
2721 if (len > sizeof(param.u.add_sta.supp_rates))
2722 len = sizeof(param.u.add_sta.supp_rates);
2723 os_memcpy(param.u.add_sta.supp_rates, supp_rates, len);
2724 return hostapd_ioctl(drv, ¶m, sizeof(param));
2728 static int wpa_driver_wext_mlme_remove_sta(void *priv, const u8 *addr)
2730 struct wpa_driver_wext_data *drv = priv;
2731 struct prism2_hostapd_param param;
2733 os_memset(¶m, 0, sizeof(param));
2734 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
2735 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2736 return hostapd_ioctl(drv, ¶m, sizeof(param));
2739 #endif /* CONFIG_CLIENT_MLME */
2742 static int wpa_driver_wext_set_param(void *priv, const char *param)
2744 #ifdef CONFIG_CLIENT_MLME
2745 struct wpa_driver_wext_data *drv = priv;
2750 wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
2752 if (os_strstr(param, "use_mlme=1")) {
2753 wpa_printf(MSG_DEBUG, "WEXT: Using user space MLME");
2754 drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME;
2756 drv->mlme_sock = wpa_driver_wext_open_mlme(drv);
2757 if (drv->mlme_sock < 0)
2760 #endif /* CONFIG_CLIENT_MLME */
2766 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2768 return drv->we_version_compiled;
2772 const struct wpa_driver_ops wpa_driver_wext_ops = {
2774 .desc = "Linux wireless extensions (generic)",
2775 .get_bssid = wpa_driver_wext_get_bssid,
2776 .get_ssid = wpa_driver_wext_get_ssid,
2777 .set_wpa = wpa_driver_wext_set_wpa,
2778 .set_key = wpa_driver_wext_set_key,
2779 .set_countermeasures = wpa_driver_wext_set_countermeasures,
2780 .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2781 .scan = wpa_driver_wext_scan,
2782 .get_scan_results2 = wpa_driver_wext_get_scan_results,
2783 .deauthenticate = wpa_driver_wext_deauthenticate,
2784 .disassociate = wpa_driver_wext_disassociate,
2785 .associate = wpa_driver_wext_associate,
2786 .set_auth_alg = wpa_driver_wext_set_auth_alg,
2787 .init = wpa_driver_wext_init,
2788 .deinit = wpa_driver_wext_deinit,
2789 .set_param = wpa_driver_wext_set_param,
2790 .add_pmkid = wpa_driver_wext_add_pmkid,
2791 .remove_pmkid = wpa_driver_wext_remove_pmkid,
2792 .flush_pmkid = wpa_driver_wext_flush_pmkid,
2793 .get_capa = wpa_driver_wext_get_capa,
2794 .set_operstate = wpa_driver_wext_set_operstate,
2795 #ifdef CONFIG_CLIENT_MLME
2796 .get_hw_feature_data = wpa_driver_wext_get_hw_feature_data,
2797 .set_channel = wpa_driver_wext_set_channel,
2798 .set_ssid = wpa_driver_wext_set_ssid,
2799 .set_bssid = wpa_driver_wext_set_bssid,
2800 .send_mlme = wpa_driver_wext_send_mlme,
2801 .mlme_add_sta = wpa_driver_wext_mlme_add_sta,
2802 .mlme_remove_sta = wpa_driver_wext_mlme_remove_sta,
2803 #endif /* CONFIG_CLIENT_MLME */