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);
158 static int wpa_driver_wext_send_oper_ifla(struct wpa_driver_wext_data *drv,
159 int linkmode, int operstate)
163 struct ifinfomsg ifinfo;
170 os_memset(&req, 0, sizeof(req));
172 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
173 req.hdr.nlmsg_type = RTM_SETLINK;
174 req.hdr.nlmsg_flags = NLM_F_REQUEST;
175 req.hdr.nlmsg_seq = ++nl_seq;
176 req.hdr.nlmsg_pid = 0;
178 req.ifinfo.ifi_family = AF_UNSPEC;
179 req.ifinfo.ifi_type = 0;
180 req.ifinfo.ifi_index = drv->ifindex;
181 req.ifinfo.ifi_flags = 0;
182 req.ifinfo.ifi_change = 0;
184 if (linkmode != -1) {
185 rta = (struct rtattr *)
186 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
187 rta->rta_type = IFLA_LINKMODE;
188 rta->rta_len = RTA_LENGTH(sizeof(char));
189 *((char *) RTA_DATA(rta)) = linkmode;
190 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
191 RTA_LENGTH(sizeof(char));
193 if (operstate != -1) {
194 rta = (struct rtattr *)
195 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
196 rta->rta_type = IFLA_OPERSTATE;
197 rta->rta_len = RTA_LENGTH(sizeof(char));
198 *((char *) RTA_DATA(rta)) = operstate;
199 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
200 RTA_LENGTH(sizeof(char));
203 wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
204 linkmode, operstate);
206 ret = send(drv->event_sock, &req, req.hdr.nlmsg_len, 0);
208 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
209 "%s (assume operstate is not supported)",
213 return ret < 0 ? -1 : 0;
217 int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
223 os_memset(&iwr, 0, sizeof(iwr));
224 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
225 iwr.u.param.flags = idx & IW_AUTH_INDEX;
226 iwr.u.param.value = value;
228 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
229 if (errno != EOPNOTSUPP) {
230 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
231 "value 0x%x) failed: %s)",
232 idx, value, strerror(errno));
234 ret = errno == EOPNOTSUPP ? -2 : -1;
242 * wpa_driver_wext_get_bssid - Get BSSID, SIOCGIWAP
243 * @priv: Pointer to private wext data from wpa_driver_wext_init()
244 * @bssid: Buffer for BSSID
245 * Returns: 0 on success, -1 on failure
247 int wpa_driver_wext_get_bssid(void *priv, u8 *bssid)
249 struct wpa_driver_wext_data *drv = priv;
253 os_memset(&iwr, 0, sizeof(iwr));
254 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
256 if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
257 perror("ioctl[SIOCGIWAP]");
260 os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
267 * wpa_driver_wext_set_bssid - Set BSSID, SIOCSIWAP
268 * @priv: Pointer to private wext data from wpa_driver_wext_init()
270 * Returns: 0 on success, -1 on failure
272 int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid)
274 struct wpa_driver_wext_data *drv = priv;
278 os_memset(&iwr, 0, sizeof(iwr));
279 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
280 iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
282 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
284 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
286 if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
287 perror("ioctl[SIOCSIWAP]");
296 * wpa_driver_wext_get_ssid - Get SSID, SIOCGIWESSID
297 * @priv: Pointer to private wext data from wpa_driver_wext_init()
298 * @ssid: Buffer for the SSID; must be at least 32 bytes long
299 * Returns: SSID length on success, -1 on failure
301 int wpa_driver_wext_get_ssid(void *priv, u8 *ssid)
303 struct wpa_driver_wext_data *drv = priv;
307 os_memset(&iwr, 0, sizeof(iwr));
308 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
309 iwr.u.essid.pointer = (caddr_t) ssid;
310 iwr.u.essid.length = 32;
312 if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
313 perror("ioctl[SIOCGIWESSID]");
316 ret = iwr.u.essid.length;
319 /* Some drivers include nul termination in the SSID, so let's
320 * remove it here before further processing. WE-21 changes this
321 * to explicitly require the length _not_ to include nul
323 if (ret > 0 && ssid[ret - 1] == '\0' &&
324 drv->we_version_compiled < 21)
333 * wpa_driver_wext_set_ssid - Set SSID, SIOCSIWESSID
334 * @priv: Pointer to private wext data from wpa_driver_wext_init()
336 * @ssid_len: Length of SSID (0..32)
337 * Returns: 0 on success, -1 on failure
339 int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len)
341 struct wpa_driver_wext_data *drv = priv;
349 os_memset(&iwr, 0, sizeof(iwr));
350 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
351 /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
352 iwr.u.essid.flags = (ssid_len != 0);
353 os_memset(buf, 0, sizeof(buf));
354 os_memcpy(buf, ssid, ssid_len);
355 iwr.u.essid.pointer = (caddr_t) buf;
356 if (drv->we_version_compiled < 21) {
357 /* For historic reasons, set SSID length to include one extra
358 * character, C string nul termination, even though SSID is
359 * really an octet string that should not be presented as a C
360 * string. Some Linux drivers decrement the length by one and
361 * can thus end up missing the last octet of the SSID if the
362 * length is not incremented here. WE-21 changes this to
363 * explicitly require the length _not_ to include nul
368 iwr.u.essid.length = ssid_len;
370 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
371 perror("ioctl[SIOCSIWESSID]");
380 * wpa_driver_wext_set_freq - Set frequency/channel, SIOCSIWFREQ
381 * @priv: Pointer to private wext data from wpa_driver_wext_init()
382 * @freq: Frequency in MHz
383 * Returns: 0 on success, -1 on failure
385 int wpa_driver_wext_set_freq(void *priv, int freq)
387 struct wpa_driver_wext_data *drv = priv;
391 os_memset(&iwr, 0, sizeof(iwr));
392 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
393 iwr.u.freq.m = freq * 100000;
396 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
397 perror("ioctl[SIOCSIWFREQ]");
406 wpa_driver_wext_event_wireless_custom(void *ctx, char *custom)
408 union wpa_event_data data;
410 wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
413 os_memset(&data, 0, sizeof(data));
415 if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
416 data.michael_mic_failure.unicast =
417 os_strstr(custom, " unicast ") != NULL;
418 /* TODO: parse parameters(?) */
419 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
420 } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
426 bytes = strspn(spos, "0123456789abcdefABCDEF");
427 if (!bytes || (bytes & 1))
431 data.assoc_info.req_ies = os_malloc(bytes);
432 if (data.assoc_info.req_ies == NULL)
435 data.assoc_info.req_ies_len = bytes;
436 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
440 data.assoc_info.resp_ies = NULL;
441 data.assoc_info.resp_ies_len = 0;
443 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
446 bytes = strspn(spos, "0123456789abcdefABCDEF");
447 if (!bytes || (bytes & 1))
451 data.assoc_info.resp_ies = os_malloc(bytes);
452 if (data.assoc_info.resp_ies == NULL)
455 data.assoc_info.resp_ies_len = bytes;
456 hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
459 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
462 os_free(data.assoc_info.resp_ies);
463 os_free(data.assoc_info.req_ies);
464 #ifdef CONFIG_PEERKEY
465 } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
466 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
467 wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
468 "STKSTART.request '%s'", custom + 17);
471 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
472 #endif /* CONFIG_PEERKEY */
477 static int wpa_driver_wext_event_wireless_michaelmicfailure(
478 void *ctx, const char *ev, size_t len)
480 const struct iw_michaelmicfailure *mic;
481 union wpa_event_data data;
483 if (len < sizeof(*mic))
486 mic = (const struct iw_michaelmicfailure *) ev;
488 wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
489 "flags=0x%x src_addr=" MACSTR, mic->flags,
490 MAC2STR(mic->src_addr.sa_data));
492 os_memset(&data, 0, sizeof(data));
493 data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
494 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
500 static int wpa_driver_wext_event_wireless_pmkidcand(
501 struct wpa_driver_wext_data *drv, const char *ev, size_t len)
503 const struct iw_pmkid_cand *cand;
504 union wpa_event_data data;
507 if (len < sizeof(*cand))
510 cand = (const struct iw_pmkid_cand *) ev;
511 addr = (const u8 *) cand->bssid.sa_data;
513 wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
514 "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
515 cand->index, MAC2STR(addr));
517 os_memset(&data, 0, sizeof(data));
518 os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
519 data.pmkid_candidate.index = cand->index;
520 data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
521 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
527 static int wpa_driver_wext_event_wireless_assocreqie(
528 struct wpa_driver_wext_data *drv, const char *ev, int len)
533 wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
535 os_free(drv->assoc_req_ies);
536 drv->assoc_req_ies = os_malloc(len);
537 if (drv->assoc_req_ies == NULL) {
538 drv->assoc_req_ies_len = 0;
541 os_memcpy(drv->assoc_req_ies, ev, len);
542 drv->assoc_req_ies_len = len;
548 static int wpa_driver_wext_event_wireless_assocrespie(
549 struct wpa_driver_wext_data *drv, const char *ev, int len)
554 wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
556 os_free(drv->assoc_resp_ies);
557 drv->assoc_resp_ies = os_malloc(len);
558 if (drv->assoc_resp_ies == NULL) {
559 drv->assoc_resp_ies_len = 0;
562 os_memcpy(drv->assoc_resp_ies, ev, len);
563 drv->assoc_resp_ies_len = len;
569 static void wpa_driver_wext_event_assoc_ies(struct wpa_driver_wext_data *drv)
571 union wpa_event_data data;
573 if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
576 os_memset(&data, 0, sizeof(data));
577 if (drv->assoc_req_ies) {
578 data.assoc_info.req_ies = drv->assoc_req_ies;
579 drv->assoc_req_ies = NULL;
580 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
582 if (drv->assoc_resp_ies) {
583 data.assoc_info.resp_ies = drv->assoc_resp_ies;
584 drv->assoc_resp_ies = NULL;
585 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
588 wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
590 os_free(data.assoc_info.req_ies);
591 os_free(data.assoc_info.resp_ies);
595 static void wpa_driver_wext_event_wireless(struct wpa_driver_wext_data *drv,
596 void *ctx, char *data, int len)
598 struct iw_event iwe_buf, *iwe = &iwe_buf;
599 char *pos, *end, *custom, *buf;
604 while (pos + IW_EV_LCP_LEN <= end) {
605 /* Event data may be unaligned, so make a local, aligned copy
606 * before processing. */
607 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
608 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
610 if (iwe->len <= IW_EV_LCP_LEN)
613 custom = pos + IW_EV_POINT_LEN;
614 if (drv->we_version_compiled > 18 &&
615 (iwe->cmd == IWEVMICHAELMICFAILURE ||
616 iwe->cmd == IWEVCUSTOM ||
617 iwe->cmd == IWEVASSOCREQIE ||
618 iwe->cmd == IWEVASSOCRESPIE ||
619 iwe->cmd == IWEVPMKIDCAND)) {
620 /* WE-19 removed the pointer from struct iw_point */
621 char *dpos = (char *) &iwe_buf.u.data.length;
622 int dlen = dpos - (char *) &iwe_buf;
623 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
624 sizeof(struct iw_event) - dlen);
626 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
627 custom += IW_EV_POINT_OFF;
632 wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
634 MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
635 if (is_zero_ether_addr(
636 (const u8 *) iwe->u.ap_addr.sa_data) ||
637 os_memcmp(iwe->u.ap_addr.sa_data,
638 "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
640 os_free(drv->assoc_req_ies);
641 drv->assoc_req_ies = NULL;
642 os_free(drv->assoc_resp_ies);
643 drv->assoc_resp_ies = NULL;
644 wpa_supplicant_event(ctx, EVENT_DISASSOC,
648 wpa_driver_wext_event_assoc_ies(drv);
649 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
652 case IWEVMICHAELMICFAILURE:
653 wpa_driver_wext_event_wireless_michaelmicfailure(
654 ctx, custom, iwe->u.data.length);
657 if (custom + iwe->u.data.length > end)
659 buf = os_malloc(iwe->u.data.length + 1);
662 os_memcpy(buf, custom, iwe->u.data.length);
663 buf[iwe->u.data.length] = '\0';
664 wpa_driver_wext_event_wireless_custom(ctx, buf);
668 drv->scan_complete_events = 1;
669 eloop_cancel_timeout(wpa_driver_wext_scan_timeout,
671 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
674 wpa_driver_wext_event_wireless_assocreqie(
675 drv, custom, iwe->u.data.length);
677 case IWEVASSOCRESPIE:
678 wpa_driver_wext_event_wireless_assocrespie(
679 drv, custom, iwe->u.data.length);
682 wpa_driver_wext_event_wireless_pmkidcand(
683 drv, custom, iwe->u.data.length);
692 static void wpa_driver_wext_event_link(void *ctx, char *buf, size_t len,
695 union wpa_event_data event;
697 os_memset(&event, 0, sizeof(event));
698 if (len > sizeof(event.interface_status.ifname))
699 len = sizeof(event.interface_status.ifname) - 1;
700 os_memcpy(event.interface_status.ifname, buf, len);
701 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
702 EVENT_INTERFACE_ADDED;
704 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
706 event.interface_status.ifname,
707 del ? "removed" : "added");
709 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
713 static void wpa_driver_wext_event_rtm_newlink(struct wpa_driver_wext_data *drv,
714 void *ctx, struct nlmsghdr *h,
717 struct ifinfomsg *ifi;
718 int attrlen, nlmsg_len, rta_len;
719 struct rtattr * attr;
721 if (len < sizeof(*ifi))
726 if (drv->ifindex != ifi->ifi_index && drv->ifindex2 != ifi->ifi_index)
728 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
733 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
735 drv->operstate, ifi->ifi_flags,
736 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
737 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
738 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
739 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
741 * Some drivers send the association event before the operup event--in
742 * this case, lifting operstate in wpa_driver_wext_set_operstate()
743 * fails. This will hit us when wpa_supplicant does not need to do
744 * IEEE 802.1X authentication
746 if (drv->operstate == 1 &&
747 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
748 !(ifi->ifi_flags & IFF_RUNNING))
749 wpa_driver_wext_send_oper_ifla(drv, -1, IF_OPER_UP);
751 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
753 attrlen = h->nlmsg_len - nlmsg_len;
757 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
759 rta_len = RTA_ALIGN(sizeof(struct rtattr));
760 while (RTA_OK(attr, attrlen)) {
761 if (attr->rta_type == IFLA_WIRELESS) {
762 wpa_driver_wext_event_wireless(
763 drv, ctx, ((char *) attr) + rta_len,
764 attr->rta_len - rta_len);
765 } else if (attr->rta_type == IFLA_IFNAME) {
766 wpa_driver_wext_event_link(ctx,
767 ((char *) attr) + rta_len,
768 attr->rta_len - rta_len, 0);
770 attr = RTA_NEXT(attr, attrlen);
775 static void wpa_driver_wext_event_rtm_dellink(struct wpa_driver_wext_data *drv,
776 void *ctx, struct nlmsghdr *h,
779 struct ifinfomsg *ifi;
780 int attrlen, nlmsg_len, rta_len;
781 struct rtattr * attr;
783 if (len < sizeof(*ifi))
788 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
790 attrlen = h->nlmsg_len - nlmsg_len;
794 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
796 rta_len = RTA_ALIGN(sizeof(struct rtattr));
797 while (RTA_OK(attr, attrlen)) {
798 if (attr->rta_type == IFLA_IFNAME) {
799 wpa_driver_wext_event_link(ctx,
800 ((char *) attr) + rta_len,
801 attr->rta_len - rta_len, 1);
803 attr = RTA_NEXT(attr, attrlen);
808 static void wpa_driver_wext_event_receive(int sock, void *eloop_ctx,
813 struct sockaddr_nl from;
819 fromlen = sizeof(from);
820 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
821 (struct sockaddr *) &from, &fromlen);
823 if (errno != EINTR && errno != EAGAIN)
824 perror("recvfrom(netlink)");
828 h = (struct nlmsghdr *) buf;
829 while (left >= (int) sizeof(*h)) {
833 plen = len - sizeof(*h);
834 if (len > left || plen < 0) {
835 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
836 "len=%d left=%d plen=%d",
841 switch (h->nlmsg_type) {
843 wpa_driver_wext_event_rtm_newlink(eloop_ctx, sock_ctx,
847 wpa_driver_wext_event_rtm_dellink(eloop_ctx, sock_ctx,
852 len = NLMSG_ALIGN(len);
854 h = (struct nlmsghdr *) ((char *) h + len);
858 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
862 if (--max_events > 0) {
864 * Try to receive all events in one eloop call in order to
865 * limit race condition on cases where AssocInfo event, Assoc
866 * event, and EAPOL frames are received more or less at the
867 * same time. We want to process the event messages first
868 * before starting EAPOL processing.
875 static int wpa_driver_wext_get_ifflags_ifname(struct wpa_driver_wext_data *drv,
876 const char *ifname, int *flags)
880 os_memset(&ifr, 0, sizeof(ifr));
881 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
882 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
883 perror("ioctl[SIOCGIFFLAGS]");
886 *flags = ifr.ifr_flags & 0xffff;
892 * wpa_driver_wext_get_ifflags - Get interface flags (SIOCGIFFLAGS)
893 * @drv: driver_wext private data
894 * @flags: Pointer to returned flags value
895 * Returns: 0 on success, -1 on failure
897 int wpa_driver_wext_get_ifflags(struct wpa_driver_wext_data *drv, int *flags)
899 return wpa_driver_wext_get_ifflags_ifname(drv, drv->ifname, flags);
903 static int wpa_driver_wext_set_ifflags_ifname(struct wpa_driver_wext_data *drv,
904 const char *ifname, int flags)
908 os_memset(&ifr, 0, sizeof(ifr));
909 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
910 ifr.ifr_flags = flags & 0xffff;
911 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
912 perror("SIOCSIFFLAGS");
919 #ifdef CONFIG_CLIENT_MLME
921 static int wpa_driver_prism2_param_set(struct wpa_driver_wext_data *drv,
922 int param, int value)
927 os_memset(&iwr, 0, sizeof(iwr));
928 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
929 i = (int *) iwr.u.name;
933 return ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr);
937 static int wpa_driver_prism2_param_get(struct wpa_driver_wext_data *drv,
943 os_memset(&iwr, 0, sizeof(iwr));
944 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
945 i = (int *) iwr.u.name;
948 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_GET_PRISM2_PARAM, &iwr) < 0) {
949 perror("ioctl[PRISM2_IOCTL_GET_PRISM2_PARAM]");
956 #endif /* CONFIG_CLIENT_MLME */
960 * wpa_driver_wext_set_ifflags - Set interface flags (SIOCSIFFLAGS)
961 * @drv: driver_wext private data
962 * @flags: New value for flags
963 * Returns: 0 on success, -1 on failure
965 int wpa_driver_wext_set_ifflags(struct wpa_driver_wext_data *drv, int flags)
967 return wpa_driver_wext_set_ifflags_ifname(drv, drv->ifname, flags);
972 * wpa_driver_wext_init - Initialize WE driver interface
973 * @ctx: context to be used when calling wpa_supplicant functions,
974 * e.g., wpa_supplicant_event()
975 * @ifname: interface name, e.g., wlan0
976 * Returns: Pointer to private data, %NULL on failure
978 void * wpa_driver_wext_init(void *ctx, const char *ifname)
981 struct sockaddr_nl local;
982 struct wpa_driver_wext_data *drv;
984 drv = os_zalloc(sizeof(*drv));
988 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
990 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
991 if (drv->ioctl_sock < 0) {
992 perror("socket(PF_INET,SOCK_DGRAM)");
997 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
999 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1000 close(drv->ioctl_sock);
1005 os_memset(&local, 0, sizeof(local));
1006 local.nl_family = AF_NETLINK;
1007 local.nl_groups = RTMGRP_LINK;
1008 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1009 perror("bind(netlink)");
1011 close(drv->ioctl_sock);
1016 eloop_register_read_sock(s, wpa_driver_wext_event_receive, drv, ctx);
1017 drv->event_sock = s;
1019 drv->mlme_sock = -1;
1021 if (wpa_driver_wext_get_ifflags(drv, &flags) != 0)
1022 printf("Could not get interface '%s' flags\n", drv->ifname);
1023 else if (!(flags & IFF_UP)) {
1024 if (wpa_driver_wext_set_ifflags(drv, flags | IFF_UP) != 0) {
1025 printf("Could not set interface '%s' UP\n",
1029 * Wait some time to allow driver to initialize before
1030 * starting configuring the driver. This seems to be
1031 * needed at least some drivers that load firmware etc.
1032 * when the interface is set up.
1034 wpa_printf(MSG_DEBUG, "Interface %s set UP - waiting "
1035 "a second for the driver to complete "
1036 "initialization", drv->ifname);
1042 * Make sure that the driver does not have any obsolete PMKID entries.
1044 wpa_driver_wext_flush_pmkid(drv);
1046 if (wpa_driver_wext_set_mode(drv, 0) < 0) {
1047 printf("Could not configure driver to use managed mode\n");
1050 wpa_driver_wext_get_range(drv);
1052 drv->ifindex = if_nametoindex(drv->ifname);
1054 if (os_strncmp(ifname, "wlan", 4) == 0) {
1056 * Host AP driver may use both wlan# and wifi# interface in
1057 * wireless events. Since some of the versions included WE-18
1058 * support, let's add the alternative ifindex also from
1059 * driver_wext.c for the time being. This may be removed at
1060 * some point once it is believed that old versions of the
1061 * driver are not in use anymore.
1063 char ifname2[IFNAMSIZ + 1];
1064 os_strlcpy(ifname2, ifname, sizeof(ifname2));
1065 os_memcpy(ifname2, "wifi", 4);
1066 wpa_driver_wext_alternative_ifindex(drv, ifname2);
1069 wpa_driver_wext_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1076 * wpa_driver_wext_deinit - Deinitialize WE driver interface
1077 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1079 * Shut down driver interface and processing of driver events. Free
1080 * private data buffer if one was allocated in wpa_driver_wext_init().
1082 void wpa_driver_wext_deinit(void *priv)
1084 struct wpa_driver_wext_data *drv = priv;
1087 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1090 * Clear possibly configured driver parameters in order to make it
1091 * easier to use the driver after wpa_supplicant has been terminated.
1093 (void) wpa_driver_wext_set_bssid(drv,
1094 (u8 *) "\x00\x00\x00\x00\x00\x00");
1096 wpa_driver_wext_send_oper_ifla(priv, 0, IF_OPER_UP);
1098 eloop_unregister_read_sock(drv->event_sock);
1099 if (drv->mlme_sock >= 0)
1100 eloop_unregister_read_sock(drv->mlme_sock);
1102 if (wpa_driver_wext_get_ifflags(drv, &flags) == 0)
1103 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
1105 #ifdef CONFIG_CLIENT_MLME
1106 if (drv->mlmedev[0]) {
1107 if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev,
1109 (void) wpa_driver_wext_set_ifflags_ifname(
1110 drv, drv->mlmedev, flags & ~IFF_UP);
1111 wpa_driver_prism2_param_set(drv, PRISM2_PARAM_MGMT_IF, 0);
1112 wpa_driver_prism2_param_set(drv, PRISM2_PARAM_USER_SPACE_MLME,
1115 #endif /* CONFIG_CLIENT_MLME */
1117 close(drv->event_sock);
1118 close(drv->ioctl_sock);
1119 if (drv->mlme_sock >= 0)
1120 close(drv->mlme_sock);
1121 os_free(drv->assoc_req_ies);
1122 os_free(drv->assoc_resp_ies);
1128 * wpa_driver_wext_scan_timeout - Scan timeout to report scan completion
1129 * @eloop_ctx: Unused
1130 * @timeout_ctx: ctx argument given to wpa_driver_wext_init()
1132 * This function can be used as registered timeout when starting a scan to
1133 * generate a scan completed event if the driver does not report this.
1135 void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1137 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1138 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1143 * wpa_driver_wext_scan - Request the driver to initiate scan
1144 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1145 * @ssid: Specific SSID to scan for (ProbeReq) or %NULL to scan for
1146 * all SSIDs (either active scan with broadcast SSID or passive
1148 * @ssid_len: Length of the SSID
1149 * Returns: 0 on success, -1 on failure
1151 int wpa_driver_wext_scan(void *priv, const u8 *ssid, size_t ssid_len)
1153 struct wpa_driver_wext_data *drv = priv;
1155 int ret = 0, timeout;
1156 struct iw_scan_req req;
1158 if (ssid_len > IW_ESSID_MAX_SIZE) {
1159 wpa_printf(MSG_DEBUG, "%s: too long SSID (%lu)",
1160 __FUNCTION__, (unsigned long) ssid_len);
1164 os_memset(&iwr, 0, sizeof(iwr));
1165 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1167 if (ssid && ssid_len) {
1168 os_memset(&req, 0, sizeof(req));
1169 req.essid_len = ssid_len;
1170 req.bssid.sa_family = ARPHRD_ETHER;
1171 os_memset(req.bssid.sa_data, 0xff, ETH_ALEN);
1172 os_memcpy(req.essid, ssid, ssid_len);
1173 iwr.u.data.pointer = (caddr_t) &req;
1174 iwr.u.data.length = sizeof(req);
1175 iwr.u.data.flags = IW_SCAN_THIS_ESSID;
1178 if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
1179 perror("ioctl[SIOCSIWSCAN]");
1183 /* Not all drivers generate "scan completed" wireless event, so try to
1184 * read results after a timeout. */
1186 if (drv->scan_complete_events) {
1188 * The driver seems to deliver SIOCGIWSCAN events to notify
1189 * when scan is complete, so use longer timeout to avoid race
1190 * conditions with scanning and following association request.
1194 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1195 "seconds", ret, timeout);
1196 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv, drv->ctx);
1197 eloop_register_timeout(timeout, 0, wpa_driver_wext_scan_timeout, drv,
1204 static u8 * wpa_driver_wext_giwscan(struct wpa_driver_wext_data *drv,
1211 res_buf_len = IW_SCAN_MAX_DATA;
1213 res_buf = os_malloc(res_buf_len);
1214 if (res_buf == NULL)
1216 os_memset(&iwr, 0, sizeof(iwr));
1217 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1218 iwr.u.data.pointer = res_buf;
1219 iwr.u.data.length = res_buf_len;
1221 if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
1224 if (errno == E2BIG && res_buf_len < 100000) {
1228 wpa_printf(MSG_DEBUG, "Scan results did not fit - "
1229 "trying larger buffer (%lu bytes)",
1230 (unsigned long) res_buf_len);
1232 perror("ioctl[SIOCGIWSCAN]");
1238 if (iwr.u.data.length > res_buf_len) {
1242 *len = iwr.u.data.length;
1249 * Data structure for collecting WEXT scan results. This is needed to allow
1250 * the various methods of reporting IEs to be combined into a single IE buffer.
1252 struct wext_scan_data {
1253 struct wpa_scan_res res;
1262 static void wext_get_scan_mode(struct iw_event *iwe,
1263 struct wext_scan_data *res)
1265 if (iwe->u.mode == IW_MODE_ADHOC)
1266 res->res.caps |= IEEE80211_CAP_IBSS;
1267 else if (iwe->u.mode == IW_MODE_MASTER || iwe->u.mode == IW_MODE_INFRA)
1268 res->res.caps |= IEEE80211_CAP_ESS;
1272 static void wext_get_scan_ssid(struct iw_event *iwe,
1273 struct wext_scan_data *res, char *custom,
1276 int ssid_len = iwe->u.essid.length;
1277 if (custom + ssid_len > end)
1279 if (iwe->u.essid.flags &&
1281 ssid_len <= IW_ESSID_MAX_SIZE) {
1282 os_memcpy(res->ssid, custom, ssid_len);
1283 res->ssid_len = ssid_len;
1288 static void wext_get_scan_freq(struct iw_event *iwe,
1289 struct wext_scan_data *res)
1291 int divi = 1000000, i;
1293 if (iwe->u.freq.e == 0) {
1295 * Some drivers do not report frequency, but a channel.
1296 * Try to map this to frequency by assuming they are using
1297 * IEEE 802.11b/g. But don't overwrite a previously parsed
1298 * frequency if the driver sends both frequency and channel,
1299 * since the driver may be sending an A-band channel that we
1300 * don't handle here.
1306 if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
1307 res->res.freq = 2407 + 5 * iwe->u.freq.m;
1309 } else if (iwe->u.freq.m == 14) {
1310 res->res.freq = 2484;
1315 if (iwe->u.freq.e > 6) {
1316 wpa_printf(MSG_DEBUG, "Invalid freq in scan results (BSSID="
1317 MACSTR " m=%d e=%d)",
1318 MAC2STR(res->res.bssid), iwe->u.freq.m,
1323 for (i = 0; i < iwe->u.freq.e; i++)
1325 res->res.freq = iwe->u.freq.m / divi;
1329 static void wext_get_scan_qual(struct iw_event *iwe,
1330 struct wext_scan_data *res)
1332 res->res.qual = iwe->u.qual.qual;
1333 res->res.noise = iwe->u.qual.noise;
1334 res->res.level = iwe->u.qual.level;
1338 static void wext_get_scan_encode(struct iw_event *iwe,
1339 struct wext_scan_data *res)
1341 if (!(iwe->u.data.flags & IW_ENCODE_DISABLED))
1342 res->res.caps |= IEEE80211_CAP_PRIVACY;
1346 static void wext_get_scan_rate(struct iw_event *iwe,
1347 struct wext_scan_data *res, char *pos,
1351 char *custom = pos + IW_EV_LCP_LEN;
1356 if (custom + clen > end)
1359 while (((ssize_t) clen) >= (ssize_t) sizeof(struct iw_param)) {
1360 /* Note: may be misaligned, make a local, aligned copy */
1361 os_memcpy(&p, custom, sizeof(struct iw_param));
1362 if (p.value > maxrate)
1364 clen -= sizeof(struct iw_param);
1365 custom += sizeof(struct iw_param);
1367 res->maxrate = maxrate;
1371 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1372 struct wext_scan_data *res, char *custom,
1375 char *genie, *gpos, *gend;
1378 gpos = genie = custom;
1379 gend = genie + iwe->u.data.length;
1381 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1385 tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1388 os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1390 res->ie_len += gend - gpos;
1394 static void wext_get_scan_custom(struct iw_event *iwe,
1395 struct wext_scan_data *res, char *custom,
1401 clen = iwe->u.data.length;
1402 if (custom + clen > end)
1405 if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1409 bytes = custom + clen - spos;
1413 tmp = os_realloc(res->ie, res->ie_len + bytes);
1416 hexstr2bin(spos, tmp + res->ie_len, bytes);
1418 res->ie_len += bytes;
1419 } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1423 bytes = custom + clen - spos;
1427 tmp = os_realloc(res->ie, res->ie_len + bytes);
1430 hexstr2bin(spos, tmp + res->ie_len, bytes);
1432 res->ie_len += bytes;
1433 } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1438 bytes = custom + clen - spos;
1440 wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1444 hexstr2bin(spos, bin, bytes);
1445 res->res.tsf += WPA_GET_BE64(bin);
1450 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1452 return drv->we_version_compiled > 18 &&
1453 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1454 cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1458 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1459 struct wext_scan_data *data)
1461 struct wpa_scan_res **tmp;
1462 struct wpa_scan_res *r;
1464 u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1466 /* Figure out whether we need to fake any IEs */
1468 end = pos + data->ie_len;
1469 while (pos && pos + 1 < end) {
1470 if (pos + 2 + pos[1] > end)
1472 if (pos[0] == WLAN_EID_SSID)
1474 else if (pos[0] == WLAN_EID_SUPP_RATES)
1476 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1482 if (ssid_ie == NULL)
1483 extra_len += 2 + data->ssid_len;
1484 if (rate_ie == NULL && data->maxrate)
1487 r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1490 os_memcpy(r, &data->res, sizeof(*r));
1491 r->ie_len = extra_len + data->ie_len;
1492 pos = (u8 *) (r + 1);
1493 if (ssid_ie == NULL) {
1495 * Generate a fake SSID IE since the driver did not report
1498 *pos++ = WLAN_EID_SSID;
1499 *pos++ = data->ssid_len;
1500 os_memcpy(pos, data->ssid, data->ssid_len);
1501 pos += data->ssid_len;
1503 if (rate_ie == NULL && data->maxrate) {
1505 * Generate a fake Supported Rates IE since the driver did not
1506 * report a full IE list.
1508 *pos++ = WLAN_EID_SUPP_RATES;
1510 *pos++ = data->maxrate;
1513 os_memcpy(pos, data->ie, data->ie_len);
1515 tmp = os_realloc(res->res,
1516 (res->num + 1) * sizeof(struct wpa_scan_res *));
1521 tmp[res->num++] = r;
1527 * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1528 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1529 * Returns: Scan results on success, -1 on failure
1531 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1533 struct wpa_driver_wext_data *drv = priv;
1534 size_t ap_num = 0, len;
1537 struct iw_event iwe_buf, *iwe = &iwe_buf;
1538 char *pos, *end, *custom;
1539 struct wpa_scan_results *res;
1540 struct wext_scan_data data;
1542 res_buf = wpa_driver_wext_giwscan(drv, &len);
1543 if (res_buf == NULL)
1549 res = os_zalloc(sizeof(*res));
1555 pos = (char *) res_buf;
1556 end = (char *) res_buf + len;
1557 os_memset(&data, 0, sizeof(data));
1559 while (pos + IW_EV_LCP_LEN <= end) {
1560 /* Event data may be unaligned, so make a local, aligned copy
1561 * before processing. */
1562 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1563 if (iwe->len <= IW_EV_LCP_LEN)
1566 custom = pos + IW_EV_POINT_LEN;
1567 if (wext_19_iw_point(drv, iwe->cmd)) {
1568 /* WE-19 removed the pointer from struct iw_point */
1569 char *dpos = (char *) &iwe_buf.u.data.length;
1570 int dlen = dpos - (char *) &iwe_buf;
1571 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1572 sizeof(struct iw_event) - dlen);
1574 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1575 custom += IW_EV_POINT_OFF;
1581 wpa_driver_wext_add_scan_entry(res, &data);
1584 os_memset(&data, 0, sizeof(data));
1585 os_memcpy(data.res.bssid,
1586 iwe->u.ap_addr.sa_data, ETH_ALEN);
1589 wext_get_scan_mode(iwe, &data);
1592 wext_get_scan_ssid(iwe, &data, custom, end);
1595 wext_get_scan_freq(iwe, &data);
1598 wext_get_scan_qual(iwe, &data);
1601 wext_get_scan_encode(iwe, &data);
1604 wext_get_scan_rate(iwe, &data, pos, end);
1607 wext_get_scan_iwevgenie(iwe, &data, custom, end);
1610 wext_get_scan_custom(iwe, &data, custom, end);
1619 wpa_driver_wext_add_scan_entry(res, &data);
1622 wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1623 (unsigned long) len, (unsigned long) res->num);
1629 static int wpa_driver_wext_get_range(void *priv)
1631 struct wpa_driver_wext_data *drv = priv;
1632 struct iw_range *range;
1638 * Use larger buffer than struct iw_range in order to allow the
1639 * structure to grow in the future.
1641 buflen = sizeof(struct iw_range) + 500;
1642 range = os_zalloc(buflen);
1646 os_memset(&iwr, 0, sizeof(iwr));
1647 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1648 iwr.u.data.pointer = (caddr_t) range;
1649 iwr.u.data.length = buflen;
1651 minlen = ((char *) &range->enc_capa) - (char *) range +
1652 sizeof(range->enc_capa);
1654 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1655 perror("ioctl[SIOCGIWRANGE]");
1658 } else if (iwr.u.data.length >= minlen &&
1659 range->we_version_compiled >= 18) {
1660 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1661 "WE(source)=%d enc_capa=0x%x",
1662 range->we_version_compiled,
1663 range->we_version_source,
1665 drv->has_capability = 1;
1666 drv->we_version_compiled = range->we_version_compiled;
1667 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1668 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1669 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1671 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1672 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1673 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1675 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1676 WPA_DRIVER_CAPA_ENC_WEP104;
1677 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1678 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1679 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1680 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1681 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1682 drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1684 wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x "
1686 drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1688 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1689 "assuming WPA is not supported");
1697 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1699 struct wpa_driver_wext_data *drv = priv;
1700 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1702 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1707 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1710 struct iw_encode_ext *ext;
1714 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1716 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1722 os_memset(&iwr, 0, sizeof(iwr));
1723 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1725 ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1729 iwr.u.encoding.pointer = (caddr_t) ext;
1730 iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1731 ext->key_len = PMK_LEN;
1732 os_memcpy(&ext->key, psk, ext->key_len);
1733 ext->alg = IW_ENCODE_ALG_PMK;
1735 ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1737 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1744 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1745 const u8 *addr, int key_idx,
1746 int set_tx, const u8 *seq,
1748 const u8 *key, size_t key_len)
1750 struct wpa_driver_wext_data *drv = priv;
1753 struct iw_encode_ext *ext;
1755 if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1756 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1757 __FUNCTION__, (unsigned long) seq_len);
1761 ext = os_zalloc(sizeof(*ext) + key_len);
1764 os_memset(&iwr, 0, sizeof(iwr));
1765 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1766 iwr.u.encoding.flags = key_idx + 1;
1767 if (alg == WPA_ALG_NONE)
1768 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1769 iwr.u.encoding.pointer = (caddr_t) ext;
1770 iwr.u.encoding.length = sizeof(*ext) + key_len;
1773 os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1774 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1776 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1778 ext->addr.sa_family = ARPHRD_ETHER;
1780 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1782 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1783 if (key && key_len) {
1784 os_memcpy(ext + 1, key, key_len);
1785 ext->key_len = key_len;
1789 ext->alg = IW_ENCODE_ALG_NONE;
1792 ext->alg = IW_ENCODE_ALG_WEP;
1795 ext->alg = IW_ENCODE_ALG_TKIP;
1798 ext->alg = IW_ENCODE_ALG_CCMP;
1801 ext->alg = IW_ENCODE_ALG_PMK;
1803 #ifdef WEXT_MFP_PENDING
1804 #ifdef CONFIG_IEEE80211W
1806 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1808 #endif /* CONFIG_IEEE80211W */
1809 #endif /* WEXT_MFP_PENDING */
1811 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1817 if (seq && seq_len) {
1818 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1819 os_memcpy(ext->rx_seq, seq, seq_len);
1822 if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1823 ret = errno == EOPNOTSUPP ? -2 : -1;
1824 if (errno == ENODEV) {
1826 * ndiswrapper seems to be returning incorrect error
1831 perror("ioctl[SIOCSIWENCODEEXT]");
1840 * wpa_driver_wext_set_key - Configure encryption key
1841 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1842 * @priv: Private driver interface data
1843 * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1844 * %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1845 * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1846 * broadcast/default keys
1847 * @key_idx: key index (0..3), usually 0 for unicast keys
1848 * @set_tx: Configure this key as the default Tx key (only used when
1849 * driver does not support separate unicast/individual key
1850 * @seq: Sequence number/packet number, seq_len octets, the next
1851 * packet number to be used for in replay protection; configured
1852 * for Rx keys (in most cases, this is only used with broadcast
1853 * keys and set to zero for unicast keys)
1854 * @seq_len: Length of the seq, depends on the algorithm:
1855 * TKIP: 6 octets, CCMP: 6 octets
1856 * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1858 * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1859 * TKIP: 32, CCMP: 16)
1860 * Returns: 0 on success, -1 on failure
1862 * This function uses SIOCSIWENCODEEXT by default, but tries to use
1863 * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1865 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1866 const u8 *addr, int key_idx,
1867 int set_tx, const u8 *seq, size_t seq_len,
1868 const u8 *key, size_t key_len)
1870 struct wpa_driver_wext_data *drv = priv;
1874 wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1876 __FUNCTION__, alg, key_idx, set_tx,
1877 (unsigned long) seq_len, (unsigned long) key_len);
1879 ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1880 seq, seq_len, key, key_len);
1885 (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1886 wpa_printf(MSG_DEBUG, "Driver did not support "
1887 "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1890 wpa_printf(MSG_DEBUG, "Driver did not support "
1891 "SIOCSIWENCODEEXT");
1895 os_memset(&iwr, 0, sizeof(iwr));
1896 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1897 iwr.u.encoding.flags = key_idx + 1;
1898 if (alg == WPA_ALG_NONE)
1899 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1900 iwr.u.encoding.pointer = (caddr_t) key;
1901 iwr.u.encoding.length = key_len;
1903 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1904 perror("ioctl[SIOCSIWENCODE]");
1908 if (set_tx && alg != WPA_ALG_NONE) {
1909 os_memset(&iwr, 0, sizeof(iwr));
1910 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1911 iwr.u.encoding.flags = key_idx + 1;
1912 iwr.u.encoding.pointer = (caddr_t) NULL;
1913 iwr.u.encoding.length = 0;
1914 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1915 perror("ioctl[SIOCSIWENCODE] (set_tx)");
1924 static int wpa_driver_wext_set_countermeasures(void *priv,
1927 struct wpa_driver_wext_data *drv = priv;
1928 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1929 return wpa_driver_wext_set_auth_param(drv,
1930 IW_AUTH_TKIP_COUNTERMEASURES,
1935 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1938 struct wpa_driver_wext_data *drv = priv;
1939 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1940 drv->use_crypt = enabled;
1941 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1946 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1947 const u8 *addr, int cmd, int reason_code)
1950 struct iw_mlme mlme;
1953 os_memset(&iwr, 0, sizeof(iwr));
1954 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1955 os_memset(&mlme, 0, sizeof(mlme));
1957 mlme.reason_code = reason_code;
1958 mlme.addr.sa_family = ARPHRD_ETHER;
1959 os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1960 iwr.u.data.pointer = (caddr_t) &mlme;
1961 iwr.u.data.length = sizeof(mlme);
1963 if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1964 perror("ioctl[SIOCSIWMLME]");
1972 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1975 struct wpa_driver_wext_data *drv = priv;
1976 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1977 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1981 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1984 struct wpa_driver_wext_data *drv = priv;
1985 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1986 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC,
1991 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1994 struct wpa_driver_wext_data *drv = priv;
1998 os_memset(&iwr, 0, sizeof(iwr));
1999 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2000 iwr.u.data.pointer = (caddr_t) ie;
2001 iwr.u.data.length = ie_len;
2003 if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
2004 perror("ioctl[SIOCSIWGENIE]");
2012 int wpa_driver_wext_cipher2wext(int cipher)
2016 return IW_AUTH_CIPHER_NONE;
2018 return IW_AUTH_CIPHER_WEP40;
2020 return IW_AUTH_CIPHER_TKIP;
2022 return IW_AUTH_CIPHER_CCMP;
2024 return IW_AUTH_CIPHER_WEP104;
2031 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2034 case KEY_MGMT_802_1X:
2035 case KEY_MGMT_802_1X_NO_WPA:
2036 return IW_AUTH_KEY_MGMT_802_1X;
2038 return IW_AUTH_KEY_MGMT_PSK;
2046 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2047 struct wpa_driver_associate_params *params)
2052 wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2053 "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2055 os_memset(&iwr, 0, sizeof(iwr));
2056 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2057 /* Just changing mode, not actual keys */
2058 iwr.u.encoding.flags = 0;
2059 iwr.u.encoding.pointer = (caddr_t) NULL;
2060 iwr.u.encoding.length = 0;
2063 * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2064 * different things. Here they are used to indicate Open System vs.
2065 * Shared Key authentication algorithm. However, some drivers may use
2066 * them to select between open/restricted WEP encrypted (open = allow
2067 * both unencrypted and encrypted frames; restricted = only allow
2068 * encrypted frames).
2071 if (!drv->use_crypt) {
2072 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2074 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2075 iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2076 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2077 iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2080 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2081 perror("ioctl[SIOCSIWENCODE]");
2089 int wpa_driver_wext_associate(void *priv,
2090 struct wpa_driver_associate_params *params)
2092 struct wpa_driver_wext_data *drv = priv;
2094 int allow_unencrypted_eapol;
2097 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2100 * If the driver did not support SIOCSIWAUTH, fallback to
2101 * SIOCSIWENCODE here.
2103 if (drv->auth_alg_fallback &&
2104 wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2107 if (!params->bssid &&
2108 wpa_driver_wext_set_bssid(drv, NULL) < 0)
2111 if (wpa_driver_wext_set_mode(drv, params->mode) < 0)
2113 /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2114 * from configuration, not from here, where only the selected suite is
2116 if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2119 if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2120 value = IW_AUTH_WPA_VERSION_DISABLED;
2121 else if (params->wpa_ie[0] == WLAN_EID_RSN)
2122 value = IW_AUTH_WPA_VERSION_WPA2;
2124 value = IW_AUTH_WPA_VERSION_WPA;
2125 if (wpa_driver_wext_set_auth_param(drv,
2126 IW_AUTH_WPA_VERSION, value) < 0)
2128 value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2129 if (wpa_driver_wext_set_auth_param(drv,
2130 IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2132 value = wpa_driver_wext_cipher2wext(params->group_suite);
2133 if (wpa_driver_wext_set_auth_param(drv,
2134 IW_AUTH_CIPHER_GROUP, value) < 0)
2136 value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2137 if (wpa_driver_wext_set_auth_param(drv,
2138 IW_AUTH_KEY_MGMT, value) < 0)
2140 value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2141 params->pairwise_suite != CIPHER_NONE ||
2142 params->group_suite != CIPHER_NONE ||
2144 if (wpa_driver_wext_set_auth_param(drv,
2145 IW_AUTH_PRIVACY_INVOKED, value) < 0)
2148 /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2149 * not using WPA. IEEE 802.1X specifies that these frames are not
2150 * encrypted, but WPA encrypts them when pairwise keys are in use. */
2151 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2152 params->key_mgmt_suite == KEY_MGMT_PSK)
2153 allow_unencrypted_eapol = 0;
2155 allow_unencrypted_eapol = 1;
2157 if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2159 if (wpa_driver_wext_set_auth_param(drv,
2160 IW_AUTH_RX_UNENCRYPTED_EAPOL,
2161 allow_unencrypted_eapol) < 0)
2163 #ifdef WEXT_MFP_PENDING
2164 #ifdef CONFIG_IEEE80211W
2165 switch (params->mgmt_frame_protection) {
2166 case NO_MGMT_FRAME_PROTECTION:
2167 value = IW_AUTH_MFP_DISABLED;
2169 case MGMT_FRAME_PROTECTION_OPTIONAL:
2170 value = IW_AUTH_MFP_OPTIONAL;
2172 case MGMT_FRAME_PROTECTION_REQUIRED:
2173 value = IW_AUTH_MFP_REQUIRED;
2176 if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2178 #endif /* CONFIG_IEEE80211W */
2179 #endif /* WEXT_MFP_PENDING */
2180 if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2182 if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2184 if (params->bssid &&
2185 wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2192 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2194 struct wpa_driver_wext_data *drv = priv;
2197 if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2198 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2199 if (auth_alg & AUTH_ALG_SHARED_KEY)
2200 algs |= IW_AUTH_ALG_SHARED_KEY;
2201 if (auth_alg & AUTH_ALG_LEAP)
2202 algs |= IW_AUTH_ALG_LEAP;
2204 /* at least one algorithm should be set */
2205 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2208 res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2210 drv->auth_alg_fallback = res == -2;
2216 * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2217 * @priv: Pointer to private wext data from wpa_driver_wext_init()
2218 * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2219 * Returns: 0 on success, -1 on failure
2221 int wpa_driver_wext_set_mode(void *priv, int mode)
2223 struct wpa_driver_wext_data *drv = priv;
2225 int ret = -1, flags;
2226 unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2228 os_memset(&iwr, 0, sizeof(iwr));
2229 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2230 iwr.u.mode = new_mode;
2231 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2236 if (errno != EBUSY) {
2237 perror("ioctl[SIOCSIWMODE]");
2241 /* mac80211 doesn't allow mode changes while the device is up, so if
2242 * the device isn't in the mode we're about to change to, take device
2243 * down, try to set the mode again, and bring it back up.
2245 if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2246 perror("ioctl[SIOCGIWMODE]");
2250 if (iwr.u.mode == new_mode) {
2255 if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2256 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2258 /* Try to set the mode again while the interface is down */
2259 iwr.u.mode = new_mode;
2260 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2261 perror("ioctl[SIOCSIWMODE]");
2265 /* Ignore return value of get_ifflags to ensure that the device
2266 * is always up like it was before this function was called.
2268 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2269 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2277 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2278 u32 cmd, const u8 *bssid, const u8 *pmkid)
2281 struct iw_pmksa pmksa;
2284 os_memset(&iwr, 0, sizeof(iwr));
2285 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2286 os_memset(&pmksa, 0, sizeof(pmksa));
2288 pmksa.bssid.sa_family = ARPHRD_ETHER;
2290 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2292 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2293 iwr.u.data.pointer = (caddr_t) &pmksa;
2294 iwr.u.data.length = sizeof(pmksa);
2296 if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2297 if (errno != EOPNOTSUPP)
2298 perror("ioctl[SIOCSIWPMKSA]");
2306 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2309 struct wpa_driver_wext_data *drv = priv;
2310 return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2314 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2317 struct wpa_driver_wext_data *drv = priv;
2318 return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2322 static int wpa_driver_wext_flush_pmkid(void *priv)
2324 struct wpa_driver_wext_data *drv = priv;
2325 return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2329 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2331 struct wpa_driver_wext_data *drv = priv;
2332 if (!drv->has_capability)
2334 os_memcpy(capa, &drv->capa, sizeof(*capa));
2339 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2342 if (ifname == NULL) {
2347 drv->ifindex2 = if_nametoindex(ifname);
2348 if (drv->ifindex2 <= 0)
2351 wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2352 "wireless events", drv->ifindex2, ifname);
2358 int wpa_driver_wext_set_operstate(void *priv, int state)
2360 struct wpa_driver_wext_data *drv = priv;
2362 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2363 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2364 drv->operstate = state;
2365 return wpa_driver_wext_send_oper_ifla(
2366 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2370 #ifdef CONFIG_CLIENT_MLME
2371 static int hostapd_ioctl(struct wpa_driver_wext_data *drv,
2372 struct prism2_hostapd_param *param, int len)
2376 os_memset(&iwr, 0, sizeof(iwr));
2377 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2378 iwr.u.data.pointer = (caddr_t) param;
2379 iwr.u.data.length = len;
2381 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
2382 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2390 static struct wpa_hw_modes *
2391 wpa_driver_wext_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2393 struct wpa_driver_wext_data *drv = priv;
2394 struct prism2_hostapd_param *param;
2396 struct wpa_hw_modes *modes = NULL;
2399 param = os_zalloc(PRISM2_HOSTAPD_MAX_BUF_SIZE);
2402 param->cmd = PRISM2_HOSTAPD_GET_HW_FEATURES;
2404 if (hostapd_ioctl(drv, param, PRISM2_HOSTAPD_MAX_BUF_SIZE) < 0) {
2405 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2409 *num_modes = param->u.hw_features.num_modes;
2410 *flags = param->u.hw_features.flags;
2412 pos = param->u.hw_features.data;
2413 end = pos + PRISM2_HOSTAPD_MAX_BUF_SIZE -
2414 (param->u.hw_features.data - (u8 *) param);
2416 modes = os_zalloc(*num_modes * sizeof(struct wpa_hw_modes));
2420 for (i = 0; i < *num_modes; i++) {
2421 struct hostapd_ioctl_hw_modes_hdr *hdr;
2422 struct wpa_hw_modes *feature;
2425 hdr = (struct hostapd_ioctl_hw_modes_hdr *) pos;
2426 pos = (u8 *) (hdr + 1);
2427 clen = hdr->num_channels * sizeof(struct wpa_channel_data);
2428 rlen = hdr->num_rates * sizeof(struct wpa_rate_data);
2430 feature = &modes[i];
2431 switch (hdr->mode) {
2432 case MODE_IEEE80211A:
2433 feature->mode = WPA_MODE_IEEE80211A;
2435 case MODE_IEEE80211B:
2436 feature->mode = WPA_MODE_IEEE80211B;
2438 case MODE_IEEE80211G:
2439 feature->mode = WPA_MODE_IEEE80211G;
2441 case MODE_ATHEROS_TURBO:
2442 case MODE_ATHEROS_TURBOG:
2443 wpa_printf(MSG_ERROR, "Skip unsupported hw_mode=%d in "
2444 "get_hw_features data", hdr->mode);
2448 wpa_printf(MSG_ERROR, "Unknown hw_mode=%d in "
2449 "get_hw_features data", hdr->mode);
2450 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2454 feature->num_channels = hdr->num_channels;
2455 feature->num_rates = hdr->num_rates;
2457 feature->channels = os_malloc(clen);
2458 feature->rates = os_malloc(rlen);
2459 if (!feature->channels || !feature->rates ||
2460 pos + clen + rlen > end) {
2461 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2466 os_memcpy(feature->channels, pos, clen);
2468 os_memcpy(feature->rates, pos, rlen);
2478 int wpa_driver_wext_set_channel(void *priv, wpa_hw_mode phymode, int chan,
2481 return wpa_driver_wext_set_freq(priv, freq);
2485 static void wpa_driver_wext_mlme_read(int sock, void *eloop_ctx,
2488 struct wpa_driver_wext_data *drv = eloop_ctx;
2490 unsigned char buf[3000];
2491 struct ieee80211_frame_info *fi;
2492 struct ieee80211_rx_status rx_status;
2494 len = recv(sock, buf, sizeof(buf), 0);
2496 perror("recv[MLME]");
2500 if (len < (int) sizeof(struct ieee80211_frame_info)) {
2501 wpa_printf(MSG_DEBUG, "WEXT: Too short MLME frame (len=%d)",
2506 fi = (struct ieee80211_frame_info *) buf;
2507 if (ntohl(fi->version) != IEEE80211_FI_VERSION) {
2508 wpa_printf(MSG_DEBUG, "WEXT: Invalid MLME frame info version "
2509 "0x%x", ntohl(fi->version));
2513 os_memset(&rx_status, 0, sizeof(rx_status));
2514 rx_status.ssi = ntohl(fi->ssi_signal);
2515 rx_status.channel = ntohl(fi->channel);
2517 wpa_supplicant_sta_rx(drv->ctx,
2518 buf + sizeof(struct ieee80211_frame_info),
2519 len - sizeof(struct ieee80211_frame_info),
2524 static int wpa_driver_wext_open_mlme(struct wpa_driver_wext_data *drv)
2526 int flags, ifindex, s;
2527 struct sockaddr_ll addr;
2530 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_USER_SPACE_MLME, 1) <
2532 wpa_printf(MSG_ERROR, "WEXT: Failed to configure driver to "
2533 "use user space MLME");
2537 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_MGMT_IF, 1) < 0) {
2538 wpa_printf(MSG_ERROR, "WEXT: Failed to add management "
2539 "interface for user space MLME");
2543 ifindex = wpa_driver_prism2_param_get(drv, PRISM2_PARAM_MGMT_IF);
2545 wpa_printf(MSG_ERROR, "WEXT: MLME management device not "
2550 os_memset(&ifr, 0, sizeof(ifr));
2551 ifr.ifr_ifindex = ifindex;
2552 if (ioctl(drv->ioctl_sock, SIOCGIFNAME, &ifr) != 0) {
2553 perror("ioctl(SIOCGIFNAME)");
2556 os_strlcpy(drv->mlmedev, ifr.ifr_name, sizeof(drv->mlmedev));
2557 wpa_printf(MSG_DEBUG, "WEXT: MLME management device '%s'",
2560 if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev, &flags) != 0
2561 || wpa_driver_wext_set_ifflags_ifname(drv, drv->mlmedev,
2562 flags | IFF_UP) != 0) {
2563 wpa_printf(MSG_ERROR, "WEXT: Could not set interface "
2564 "'%s' UP", drv->mlmedev);
2568 s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2570 perror("socket[PF_PACKET,SOCK_RAW]");
2574 os_memset(&addr, 0, sizeof(addr));
2575 addr.sll_family = AF_PACKET;
2576 addr.sll_ifindex = ifindex;
2578 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2579 perror("bind(MLME)");
2583 if (eloop_register_read_sock(s, wpa_driver_wext_mlme_read, drv, NULL))
2585 wpa_printf(MSG_ERROR, "WEXT: Could not register MLME read "
2595 static int wpa_driver_wext_send_mlme(void *priv, const u8 *data,
2598 struct wpa_driver_wext_data *drv = priv;
2601 ret = send(drv->mlme_sock, data, data_len, 0);
2603 perror("send[MLME]");
2611 static int wpa_driver_wext_mlme_add_sta(void *priv, const u8 *addr,
2612 const u8 *supp_rates,
2613 size_t supp_rates_len)
2615 struct wpa_driver_wext_data *drv = priv;
2616 struct prism2_hostapd_param param;
2619 os_memset(¶m, 0, sizeof(param));
2620 param.cmd = PRISM2_HOSTAPD_ADD_STA;
2621 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2622 len = supp_rates_len;
2623 if (len > sizeof(param.u.add_sta.supp_rates))
2624 len = sizeof(param.u.add_sta.supp_rates);
2625 os_memcpy(param.u.add_sta.supp_rates, supp_rates, len);
2626 return hostapd_ioctl(drv, ¶m, sizeof(param));
2630 static int wpa_driver_wext_mlme_remove_sta(void *priv, const u8 *addr)
2632 struct wpa_driver_wext_data *drv = priv;
2633 struct prism2_hostapd_param param;
2635 os_memset(¶m, 0, sizeof(param));
2636 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
2637 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2638 return hostapd_ioctl(drv, ¶m, sizeof(param));
2641 #endif /* CONFIG_CLIENT_MLME */
2644 static int wpa_driver_wext_set_param(void *priv, const char *param)
2646 #ifdef CONFIG_CLIENT_MLME
2647 struct wpa_driver_wext_data *drv = priv;
2652 wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
2654 if (os_strstr(param, "use_mlme=1")) {
2655 wpa_printf(MSG_DEBUG, "WEXT: Using user space MLME");
2656 drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME;
2658 drv->mlme_sock = wpa_driver_wext_open_mlme(drv);
2659 if (drv->mlme_sock < 0)
2662 #endif /* CONFIG_CLIENT_MLME */
2668 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2670 return drv->we_version_compiled;
2674 const struct wpa_driver_ops wpa_driver_wext_ops = {
2676 .desc = "Linux wireless extensions (generic)",
2677 .get_bssid = wpa_driver_wext_get_bssid,
2678 .get_ssid = wpa_driver_wext_get_ssid,
2679 .set_wpa = wpa_driver_wext_set_wpa,
2680 .set_key = wpa_driver_wext_set_key,
2681 .set_countermeasures = wpa_driver_wext_set_countermeasures,
2682 .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2683 .scan = wpa_driver_wext_scan,
2684 .get_scan_results2 = wpa_driver_wext_get_scan_results,
2685 .deauthenticate = wpa_driver_wext_deauthenticate,
2686 .disassociate = wpa_driver_wext_disassociate,
2687 .associate = wpa_driver_wext_associate,
2688 .set_auth_alg = wpa_driver_wext_set_auth_alg,
2689 .init = wpa_driver_wext_init,
2690 .deinit = wpa_driver_wext_deinit,
2691 .set_param = wpa_driver_wext_set_param,
2692 .add_pmkid = wpa_driver_wext_add_pmkid,
2693 .remove_pmkid = wpa_driver_wext_remove_pmkid,
2694 .flush_pmkid = wpa_driver_wext_flush_pmkid,
2695 .get_capa = wpa_driver_wext_get_capa,
2696 .set_operstate = wpa_driver_wext_set_operstate,
2697 #ifdef CONFIG_CLIENT_MLME
2698 .get_hw_feature_data = wpa_driver_wext_get_hw_feature_data,
2699 .set_channel = wpa_driver_wext_set_channel,
2700 .set_ssid = wpa_driver_wext_set_ssid,
2701 .set_bssid = wpa_driver_wext_set_bssid,
2702 .send_mlme = wpa_driver_wext_send_mlme,
2703 .mlme_add_sta = wpa_driver_wext_mlme_add_sta,
2704 .mlme_remove_sta = wpa_driver_wext_mlme_remove_sta,
2705 #endif /* CONFIG_CLIENT_MLME */