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);
1368 /* Convert the maxrate from WE-style (b/s units) to
1369 * 802.11 rates (500000 b/s units).
1371 res->maxrate = maxrate / 500000;
1375 static void wext_get_scan_iwevgenie(struct iw_event *iwe,
1376 struct wext_scan_data *res, char *custom,
1379 char *genie, *gpos, *gend;
1382 gpos = genie = custom;
1383 gend = genie + iwe->u.data.length;
1385 wpa_printf(MSG_INFO, "IWEVGENIE overflow");
1389 tmp = os_realloc(res->ie, res->ie_len + gend - gpos);
1392 os_memcpy(tmp + res->ie_len, gpos, gend - gpos);
1394 res->ie_len += gend - gpos;
1398 static void wext_get_scan_custom(struct iw_event *iwe,
1399 struct wext_scan_data *res, char *custom,
1405 clen = iwe->u.data.length;
1406 if (custom + clen > end)
1409 if (clen > 7 && os_strncmp(custom, "wpa_ie=", 7) == 0) {
1413 bytes = custom + clen - spos;
1417 tmp = os_realloc(res->ie, res->ie_len + bytes);
1420 hexstr2bin(spos, tmp + res->ie_len, bytes);
1422 res->ie_len += bytes;
1423 } else if (clen > 7 && os_strncmp(custom, "rsn_ie=", 7) == 0) {
1427 bytes = custom + clen - spos;
1431 tmp = os_realloc(res->ie, res->ie_len + bytes);
1434 hexstr2bin(spos, tmp + res->ie_len, bytes);
1436 res->ie_len += bytes;
1437 } else if (clen > 4 && os_strncmp(custom, "tsf=", 4) == 0) {
1442 bytes = custom + clen - spos;
1444 wpa_printf(MSG_INFO, "Invalid TSF length (%d)", bytes);
1448 hexstr2bin(spos, bin, bytes);
1449 res->res.tsf += WPA_GET_BE64(bin);
1454 static int wext_19_iw_point(struct wpa_driver_wext_data *drv, u16 cmd)
1456 return drv->we_version_compiled > 18 &&
1457 (cmd == SIOCGIWESSID || cmd == SIOCGIWENCODE ||
1458 cmd == IWEVGENIE || cmd == IWEVCUSTOM);
1462 static void wpa_driver_wext_add_scan_entry(struct wpa_scan_results *res,
1463 struct wext_scan_data *data)
1465 struct wpa_scan_res **tmp;
1466 struct wpa_scan_res *r;
1468 u8 *pos, *end, *ssid_ie = NULL, *rate_ie = NULL;
1470 /* Figure out whether we need to fake any IEs */
1472 end = pos + data->ie_len;
1473 while (pos && pos + 1 < end) {
1474 if (pos + 2 + pos[1] > end)
1476 if (pos[0] == WLAN_EID_SSID)
1478 else if (pos[0] == WLAN_EID_SUPP_RATES)
1480 else if (pos[0] == WLAN_EID_EXT_SUPP_RATES)
1486 if (ssid_ie == NULL)
1487 extra_len += 2 + data->ssid_len;
1488 if (rate_ie == NULL && data->maxrate)
1491 r = os_zalloc(sizeof(*r) + extra_len + data->ie_len);
1494 os_memcpy(r, &data->res, sizeof(*r));
1495 r->ie_len = extra_len + data->ie_len;
1496 pos = (u8 *) (r + 1);
1497 if (ssid_ie == NULL) {
1499 * Generate a fake SSID IE since the driver did not report
1502 *pos++ = WLAN_EID_SSID;
1503 *pos++ = data->ssid_len;
1504 os_memcpy(pos, data->ssid, data->ssid_len);
1505 pos += data->ssid_len;
1507 if (rate_ie == NULL && data->maxrate) {
1509 * Generate a fake Supported Rates IE since the driver did not
1510 * report a full IE list.
1512 *pos++ = WLAN_EID_SUPP_RATES;
1514 *pos++ = data->maxrate;
1517 os_memcpy(pos, data->ie, data->ie_len);
1519 tmp = os_realloc(res->res,
1520 (res->num + 1) * sizeof(struct wpa_scan_res *));
1525 tmp[res->num++] = r;
1531 * wpa_driver_wext_get_scan_results - Fetch the latest scan results
1532 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1533 * Returns: Scan results on success, -1 on failure
1535 struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv)
1537 struct wpa_driver_wext_data *drv = priv;
1538 size_t ap_num = 0, len;
1541 struct iw_event iwe_buf, *iwe = &iwe_buf;
1542 char *pos, *end, *custom;
1543 struct wpa_scan_results *res;
1544 struct wext_scan_data data;
1546 res_buf = wpa_driver_wext_giwscan(drv, &len);
1547 if (res_buf == NULL)
1553 res = os_zalloc(sizeof(*res));
1559 pos = (char *) res_buf;
1560 end = (char *) res_buf + len;
1561 os_memset(&data, 0, sizeof(data));
1563 while (pos + IW_EV_LCP_LEN <= end) {
1564 /* Event data may be unaligned, so make a local, aligned copy
1565 * before processing. */
1566 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1567 if (iwe->len <= IW_EV_LCP_LEN)
1570 custom = pos + IW_EV_POINT_LEN;
1571 if (wext_19_iw_point(drv, iwe->cmd)) {
1572 /* WE-19 removed the pointer from struct iw_point */
1573 char *dpos = (char *) &iwe_buf.u.data.length;
1574 int dlen = dpos - (char *) &iwe_buf;
1575 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
1576 sizeof(struct iw_event) - dlen);
1578 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1579 custom += IW_EV_POINT_OFF;
1585 wpa_driver_wext_add_scan_entry(res, &data);
1588 os_memset(&data, 0, sizeof(data));
1589 os_memcpy(data.res.bssid,
1590 iwe->u.ap_addr.sa_data, ETH_ALEN);
1593 wext_get_scan_mode(iwe, &data);
1596 wext_get_scan_ssid(iwe, &data, custom, end);
1599 wext_get_scan_freq(iwe, &data);
1602 wext_get_scan_qual(iwe, &data);
1605 wext_get_scan_encode(iwe, &data);
1608 wext_get_scan_rate(iwe, &data, pos, end);
1611 wext_get_scan_iwevgenie(iwe, &data, custom, end);
1614 wext_get_scan_custom(iwe, &data, custom, end);
1623 wpa_driver_wext_add_scan_entry(res, &data);
1626 wpa_printf(MSG_DEBUG, "Received %lu bytes of scan results (%lu BSSes)",
1627 (unsigned long) len, (unsigned long) res->num);
1633 static int wpa_driver_wext_get_range(void *priv)
1635 struct wpa_driver_wext_data *drv = priv;
1636 struct iw_range *range;
1642 * Use larger buffer than struct iw_range in order to allow the
1643 * structure to grow in the future.
1645 buflen = sizeof(struct iw_range) + 500;
1646 range = os_zalloc(buflen);
1650 os_memset(&iwr, 0, sizeof(iwr));
1651 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1652 iwr.u.data.pointer = (caddr_t) range;
1653 iwr.u.data.length = buflen;
1655 minlen = ((char *) &range->enc_capa) - (char *) range +
1656 sizeof(range->enc_capa);
1658 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1659 perror("ioctl[SIOCGIWRANGE]");
1662 } else if (iwr.u.data.length >= minlen &&
1663 range->we_version_compiled >= 18) {
1664 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1665 "WE(source)=%d enc_capa=0x%x",
1666 range->we_version_compiled,
1667 range->we_version_source,
1669 drv->has_capability = 1;
1670 drv->we_version_compiled = range->we_version_compiled;
1671 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1672 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1673 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1675 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1676 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1677 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1679 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1680 WPA_DRIVER_CAPA_ENC_WEP104;
1681 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1682 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1683 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1684 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1685 if (range->enc_capa & IW_ENC_CAPA_4WAY_HANDSHAKE)
1686 drv->capa.flags |= WPA_DRIVER_FLAGS_4WAY_HANDSHAKE;
1688 wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x "
1690 drv->capa.key_mgmt, drv->capa.enc, drv->capa.flags);
1692 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1693 "assuming WPA is not supported");
1701 static int wpa_driver_wext_set_wpa(void *priv, int enabled)
1703 struct wpa_driver_wext_data *drv = priv;
1704 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1706 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1711 static int wpa_driver_wext_set_psk(struct wpa_driver_wext_data *drv,
1714 struct iw_encode_ext *ext;
1718 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1720 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
1726 os_memset(&iwr, 0, sizeof(iwr));
1727 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1729 ext = os_zalloc(sizeof(*ext) + PMK_LEN);
1733 iwr.u.encoding.pointer = (caddr_t) ext;
1734 iwr.u.encoding.length = sizeof(*ext) + PMK_LEN;
1735 ext->key_len = PMK_LEN;
1736 os_memcpy(&ext->key, psk, ext->key_len);
1737 ext->alg = IW_ENCODE_ALG_PMK;
1739 ret = ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr);
1741 perror("ioctl[SIOCSIWENCODEEXT] PMK");
1748 static int wpa_driver_wext_set_key_ext(void *priv, wpa_alg alg,
1749 const u8 *addr, int key_idx,
1750 int set_tx, const u8 *seq,
1752 const u8 *key, size_t key_len)
1754 struct wpa_driver_wext_data *drv = priv;
1757 struct iw_encode_ext *ext;
1759 if (seq_len > IW_ENCODE_SEQ_MAX_SIZE) {
1760 wpa_printf(MSG_DEBUG, "%s: Invalid seq_len %lu",
1761 __FUNCTION__, (unsigned long) seq_len);
1765 ext = os_zalloc(sizeof(*ext) + key_len);
1768 os_memset(&iwr, 0, sizeof(iwr));
1769 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1770 iwr.u.encoding.flags = key_idx + 1;
1771 if (alg == WPA_ALG_NONE)
1772 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1773 iwr.u.encoding.pointer = (caddr_t) ext;
1774 iwr.u.encoding.length = sizeof(*ext) + key_len;
1777 os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1778 ext->ext_flags |= IW_ENCODE_EXT_GROUP_KEY;
1780 ext->ext_flags |= IW_ENCODE_EXT_SET_TX_KEY;
1782 ext->addr.sa_family = ARPHRD_ETHER;
1784 os_memcpy(ext->addr.sa_data, addr, ETH_ALEN);
1786 os_memset(ext->addr.sa_data, 0xff, ETH_ALEN);
1787 if (key && key_len) {
1788 os_memcpy(ext + 1, key, key_len);
1789 ext->key_len = key_len;
1793 ext->alg = IW_ENCODE_ALG_NONE;
1796 ext->alg = IW_ENCODE_ALG_WEP;
1799 ext->alg = IW_ENCODE_ALG_TKIP;
1802 ext->alg = IW_ENCODE_ALG_CCMP;
1805 ext->alg = IW_ENCODE_ALG_PMK;
1807 #ifdef WEXT_MFP_PENDING
1808 #ifdef CONFIG_IEEE80211W
1810 ext->alg = IW_ENCODE_ALG_AES_CMAC;
1812 #endif /* CONFIG_IEEE80211W */
1813 #endif /* WEXT_MFP_PENDING */
1815 wpa_printf(MSG_DEBUG, "%s: Unknown algorithm %d",
1821 if (seq && seq_len) {
1822 ext->ext_flags |= IW_ENCODE_EXT_RX_SEQ_VALID;
1823 os_memcpy(ext->rx_seq, seq, seq_len);
1826 if (ioctl(drv->ioctl_sock, SIOCSIWENCODEEXT, &iwr) < 0) {
1827 ret = errno == EOPNOTSUPP ? -2 : -1;
1828 if (errno == ENODEV) {
1830 * ndiswrapper seems to be returning incorrect error
1835 perror("ioctl[SIOCSIWENCODEEXT]");
1844 * wpa_driver_wext_set_key - Configure encryption key
1845 * @priv: Pointer to private wext data from wpa_driver_wext_init()
1846 * @priv: Private driver interface data
1847 * @alg: Encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1848 * %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1849 * @addr: Address of the peer STA or ff:ff:ff:ff:ff:ff for
1850 * broadcast/default keys
1851 * @key_idx: key index (0..3), usually 0 for unicast keys
1852 * @set_tx: Configure this key as the default Tx key (only used when
1853 * driver does not support separate unicast/individual key
1854 * @seq: Sequence number/packet number, seq_len octets, the next
1855 * packet number to be used for in replay protection; configured
1856 * for Rx keys (in most cases, this is only used with broadcast
1857 * keys and set to zero for unicast keys)
1858 * @seq_len: Length of the seq, depends on the algorithm:
1859 * TKIP: 6 octets, CCMP: 6 octets
1860 * @key: Key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1862 * @key_len: Length of the key buffer in octets (WEP: 5 or 13,
1863 * TKIP: 32, CCMP: 16)
1864 * Returns: 0 on success, -1 on failure
1866 * This function uses SIOCSIWENCODEEXT by default, but tries to use
1867 * SIOCSIWENCODE if the extended ioctl fails when configuring a WEP key.
1869 int wpa_driver_wext_set_key(void *priv, wpa_alg alg,
1870 const u8 *addr, int key_idx,
1871 int set_tx, const u8 *seq, size_t seq_len,
1872 const u8 *key, size_t key_len)
1874 struct wpa_driver_wext_data *drv = priv;
1878 wpa_printf(MSG_DEBUG, "%s: alg=%d key_idx=%d set_tx=%d seq_len=%lu "
1880 __FUNCTION__, alg, key_idx, set_tx,
1881 (unsigned long) seq_len, (unsigned long) key_len);
1883 ret = wpa_driver_wext_set_key_ext(drv, alg, addr, key_idx, set_tx,
1884 seq, seq_len, key, key_len);
1889 (alg == WPA_ALG_NONE || alg == WPA_ALG_WEP)) {
1890 wpa_printf(MSG_DEBUG, "Driver did not support "
1891 "SIOCSIWENCODEEXT, trying SIOCSIWENCODE");
1894 wpa_printf(MSG_DEBUG, "Driver did not support "
1895 "SIOCSIWENCODEEXT");
1899 os_memset(&iwr, 0, sizeof(iwr));
1900 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1901 iwr.u.encoding.flags = key_idx + 1;
1902 if (alg == WPA_ALG_NONE)
1903 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
1904 iwr.u.encoding.pointer = (caddr_t) key;
1905 iwr.u.encoding.length = key_len;
1907 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1908 perror("ioctl[SIOCSIWENCODE]");
1912 if (set_tx && alg != WPA_ALG_NONE) {
1913 os_memset(&iwr, 0, sizeof(iwr));
1914 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1915 iwr.u.encoding.flags = key_idx + 1;
1916 iwr.u.encoding.pointer = (caddr_t) NULL;
1917 iwr.u.encoding.length = 0;
1918 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
1919 perror("ioctl[SIOCSIWENCODE] (set_tx)");
1928 static int wpa_driver_wext_set_countermeasures(void *priv,
1931 struct wpa_driver_wext_data *drv = priv;
1932 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1933 return wpa_driver_wext_set_auth_param(drv,
1934 IW_AUTH_TKIP_COUNTERMEASURES,
1939 static int wpa_driver_wext_set_drop_unencrypted(void *priv,
1942 struct wpa_driver_wext_data *drv = priv;
1943 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1944 drv->use_crypt = enabled;
1945 return wpa_driver_wext_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1950 static int wpa_driver_wext_mlme(struct wpa_driver_wext_data *drv,
1951 const u8 *addr, int cmd, int reason_code)
1954 struct iw_mlme mlme;
1957 os_memset(&iwr, 0, sizeof(iwr));
1958 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1959 os_memset(&mlme, 0, sizeof(mlme));
1961 mlme.reason_code = reason_code;
1962 mlme.addr.sa_family = ARPHRD_ETHER;
1963 os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1964 iwr.u.data.pointer = (caddr_t) &mlme;
1965 iwr.u.data.length = sizeof(mlme);
1967 if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1968 perror("ioctl[SIOCSIWMLME]");
1976 static int wpa_driver_wext_deauthenticate(void *priv, const u8 *addr,
1979 struct wpa_driver_wext_data *drv = priv;
1980 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1981 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
1985 static int wpa_driver_wext_disassociate(void *priv, const u8 *addr,
1988 struct wpa_driver_wext_data *drv = priv;
1989 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1990 return wpa_driver_wext_mlme(drv, addr, IW_MLME_DISASSOC,
1995 static int wpa_driver_wext_set_gen_ie(void *priv, const u8 *ie,
1998 struct wpa_driver_wext_data *drv = priv;
2002 os_memset(&iwr, 0, sizeof(iwr));
2003 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2004 iwr.u.data.pointer = (caddr_t) ie;
2005 iwr.u.data.length = ie_len;
2007 if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
2008 perror("ioctl[SIOCSIWGENIE]");
2016 int wpa_driver_wext_cipher2wext(int cipher)
2020 return IW_AUTH_CIPHER_NONE;
2022 return IW_AUTH_CIPHER_WEP40;
2024 return IW_AUTH_CIPHER_TKIP;
2026 return IW_AUTH_CIPHER_CCMP;
2028 return IW_AUTH_CIPHER_WEP104;
2035 int wpa_driver_wext_keymgmt2wext(int keymgmt)
2038 case KEY_MGMT_802_1X:
2039 case KEY_MGMT_802_1X_NO_WPA:
2040 return IW_AUTH_KEY_MGMT_802_1X;
2042 return IW_AUTH_KEY_MGMT_PSK;
2050 wpa_driver_wext_auth_alg_fallback(struct wpa_driver_wext_data *drv,
2051 struct wpa_driver_associate_params *params)
2056 wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2057 "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2059 os_memset(&iwr, 0, sizeof(iwr));
2060 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2061 /* Just changing mode, not actual keys */
2062 iwr.u.encoding.flags = 0;
2063 iwr.u.encoding.pointer = (caddr_t) NULL;
2064 iwr.u.encoding.length = 0;
2067 * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2068 * different things. Here they are used to indicate Open System vs.
2069 * Shared Key authentication algorithm. However, some drivers may use
2070 * them to select between open/restricted WEP encrypted (open = allow
2071 * both unencrypted and encrypted frames; restricted = only allow
2072 * encrypted frames).
2075 if (!drv->use_crypt) {
2076 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2078 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2079 iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2080 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2081 iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2084 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2085 perror("ioctl[SIOCSIWENCODE]");
2093 int wpa_driver_wext_associate(void *priv,
2094 struct wpa_driver_associate_params *params)
2096 struct wpa_driver_wext_data *drv = priv;
2098 int allow_unencrypted_eapol;
2101 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2104 * If the driver did not support SIOCSIWAUTH, fallback to
2105 * SIOCSIWENCODE here.
2107 if (drv->auth_alg_fallback &&
2108 wpa_driver_wext_auth_alg_fallback(drv, params) < 0)
2111 if (!params->bssid &&
2112 wpa_driver_wext_set_bssid(drv, NULL) < 0)
2115 if (wpa_driver_wext_set_mode(drv, params->mode) < 0)
2117 /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2118 * from configuration, not from here, where only the selected suite is
2120 if (wpa_driver_wext_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2123 if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2124 value = IW_AUTH_WPA_VERSION_DISABLED;
2125 else if (params->wpa_ie[0] == WLAN_EID_RSN)
2126 value = IW_AUTH_WPA_VERSION_WPA2;
2128 value = IW_AUTH_WPA_VERSION_WPA;
2129 if (wpa_driver_wext_set_auth_param(drv,
2130 IW_AUTH_WPA_VERSION, value) < 0)
2132 value = wpa_driver_wext_cipher2wext(params->pairwise_suite);
2133 if (wpa_driver_wext_set_auth_param(drv,
2134 IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2136 value = wpa_driver_wext_cipher2wext(params->group_suite);
2137 if (wpa_driver_wext_set_auth_param(drv,
2138 IW_AUTH_CIPHER_GROUP, value) < 0)
2140 value = wpa_driver_wext_keymgmt2wext(params->key_mgmt_suite);
2141 if (wpa_driver_wext_set_auth_param(drv,
2142 IW_AUTH_KEY_MGMT, value) < 0)
2144 value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2145 params->pairwise_suite != CIPHER_NONE ||
2146 params->group_suite != CIPHER_NONE ||
2148 if (wpa_driver_wext_set_auth_param(drv,
2149 IW_AUTH_PRIVACY_INVOKED, value) < 0)
2152 /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2153 * not using WPA. IEEE 802.1X specifies that these frames are not
2154 * encrypted, but WPA encrypts them when pairwise keys are in use. */
2155 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2156 params->key_mgmt_suite == KEY_MGMT_PSK)
2157 allow_unencrypted_eapol = 0;
2159 allow_unencrypted_eapol = 1;
2161 if (wpa_driver_wext_set_psk(drv, params->psk) < 0)
2163 if (wpa_driver_wext_set_auth_param(drv,
2164 IW_AUTH_RX_UNENCRYPTED_EAPOL,
2165 allow_unencrypted_eapol) < 0)
2167 #ifdef WEXT_MFP_PENDING
2168 #ifdef CONFIG_IEEE80211W
2169 switch (params->mgmt_frame_protection) {
2170 case NO_MGMT_FRAME_PROTECTION:
2171 value = IW_AUTH_MFP_DISABLED;
2173 case MGMT_FRAME_PROTECTION_OPTIONAL:
2174 value = IW_AUTH_MFP_OPTIONAL;
2176 case MGMT_FRAME_PROTECTION_REQUIRED:
2177 value = IW_AUTH_MFP_REQUIRED;
2180 if (wpa_driver_wext_set_auth_param(drv, IW_AUTH_MFP, value) < 0)
2182 #endif /* CONFIG_IEEE80211W */
2183 #endif /* WEXT_MFP_PENDING */
2184 if (params->freq && wpa_driver_wext_set_freq(drv, params->freq) < 0)
2186 if (wpa_driver_wext_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2188 if (params->bssid &&
2189 wpa_driver_wext_set_bssid(drv, params->bssid) < 0)
2196 static int wpa_driver_wext_set_auth_alg(void *priv, int auth_alg)
2198 struct wpa_driver_wext_data *drv = priv;
2201 if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2202 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2203 if (auth_alg & AUTH_ALG_SHARED_KEY)
2204 algs |= IW_AUTH_ALG_SHARED_KEY;
2205 if (auth_alg & AUTH_ALG_LEAP)
2206 algs |= IW_AUTH_ALG_LEAP;
2208 /* at least one algorithm should be set */
2209 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2212 res = wpa_driver_wext_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2214 drv->auth_alg_fallback = res == -2;
2220 * wpa_driver_wext_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2221 * @priv: Pointer to private wext data from wpa_driver_wext_init()
2222 * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2223 * Returns: 0 on success, -1 on failure
2225 int wpa_driver_wext_set_mode(void *priv, int mode)
2227 struct wpa_driver_wext_data *drv = priv;
2229 int ret = -1, flags;
2230 unsigned int new_mode = mode ? IW_MODE_ADHOC : IW_MODE_INFRA;
2232 os_memset(&iwr, 0, sizeof(iwr));
2233 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2234 iwr.u.mode = new_mode;
2235 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) == 0) {
2240 if (errno != EBUSY) {
2241 perror("ioctl[SIOCSIWMODE]");
2245 /* mac80211 doesn't allow mode changes while the device is up, so if
2246 * the device isn't in the mode we're about to change to, take device
2247 * down, try to set the mode again, and bring it back up.
2249 if (ioctl(drv->ioctl_sock, SIOCGIWMODE, &iwr) < 0) {
2250 perror("ioctl[SIOCGIWMODE]");
2254 if (iwr.u.mode == new_mode) {
2259 if (wpa_driver_wext_get_ifflags(drv, &flags) == 0) {
2260 (void) wpa_driver_wext_set_ifflags(drv, flags & ~IFF_UP);
2262 /* Try to set the mode again while the interface is down */
2263 iwr.u.mode = new_mode;
2264 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0)
2265 perror("ioctl[SIOCSIWMODE]");
2269 /* Ignore return value of get_ifflags to ensure that the device
2270 * is always up like it was before this function was called.
2272 (void) wpa_driver_wext_get_ifflags(drv, &flags);
2273 (void) wpa_driver_wext_set_ifflags(drv, flags | IFF_UP);
2281 static int wpa_driver_wext_pmksa(struct wpa_driver_wext_data *drv,
2282 u32 cmd, const u8 *bssid, const u8 *pmkid)
2285 struct iw_pmksa pmksa;
2288 os_memset(&iwr, 0, sizeof(iwr));
2289 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2290 os_memset(&pmksa, 0, sizeof(pmksa));
2292 pmksa.bssid.sa_family = ARPHRD_ETHER;
2294 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2296 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2297 iwr.u.data.pointer = (caddr_t) &pmksa;
2298 iwr.u.data.length = sizeof(pmksa);
2300 if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2301 if (errno != EOPNOTSUPP)
2302 perror("ioctl[SIOCSIWPMKSA]");
2310 static int wpa_driver_wext_add_pmkid(void *priv, const u8 *bssid,
2313 struct wpa_driver_wext_data *drv = priv;
2314 return wpa_driver_wext_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2318 static int wpa_driver_wext_remove_pmkid(void *priv, const u8 *bssid,
2321 struct wpa_driver_wext_data *drv = priv;
2322 return wpa_driver_wext_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2326 static int wpa_driver_wext_flush_pmkid(void *priv)
2328 struct wpa_driver_wext_data *drv = priv;
2329 return wpa_driver_wext_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2333 int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa)
2335 struct wpa_driver_wext_data *drv = priv;
2336 if (!drv->has_capability)
2338 os_memcpy(capa, &drv->capa, sizeof(*capa));
2343 int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
2346 if (ifname == NULL) {
2351 drv->ifindex2 = if_nametoindex(ifname);
2352 if (drv->ifindex2 <= 0)
2355 wpa_printf(MSG_DEBUG, "Added alternative ifindex %d (%s) for "
2356 "wireless events", drv->ifindex2, ifname);
2362 int wpa_driver_wext_set_operstate(void *priv, int state)
2364 struct wpa_driver_wext_data *drv = priv;
2366 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2367 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2368 drv->operstate = state;
2369 return wpa_driver_wext_send_oper_ifla(
2370 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2374 #ifdef CONFIG_CLIENT_MLME
2375 static int hostapd_ioctl(struct wpa_driver_wext_data *drv,
2376 struct prism2_hostapd_param *param, int len)
2380 os_memset(&iwr, 0, sizeof(iwr));
2381 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2382 iwr.u.data.pointer = (caddr_t) param;
2383 iwr.u.data.length = len;
2385 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
2386 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2394 static struct wpa_hw_modes *
2395 wpa_driver_wext_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2397 struct wpa_driver_wext_data *drv = priv;
2398 struct prism2_hostapd_param *param;
2400 struct wpa_hw_modes *modes = NULL;
2403 param = os_zalloc(PRISM2_HOSTAPD_MAX_BUF_SIZE);
2406 param->cmd = PRISM2_HOSTAPD_GET_HW_FEATURES;
2408 if (hostapd_ioctl(drv, param, PRISM2_HOSTAPD_MAX_BUF_SIZE) < 0) {
2409 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
2413 *num_modes = param->u.hw_features.num_modes;
2414 *flags = param->u.hw_features.flags;
2416 pos = param->u.hw_features.data;
2417 end = pos + PRISM2_HOSTAPD_MAX_BUF_SIZE -
2418 (param->u.hw_features.data - (u8 *) param);
2420 modes = os_zalloc(*num_modes * sizeof(struct wpa_hw_modes));
2424 for (i = 0; i < *num_modes; i++) {
2425 struct hostapd_ioctl_hw_modes_hdr *hdr;
2426 struct wpa_hw_modes *feature;
2429 hdr = (struct hostapd_ioctl_hw_modes_hdr *) pos;
2430 pos = (u8 *) (hdr + 1);
2431 clen = hdr->num_channels * sizeof(struct wpa_channel_data);
2432 rlen = hdr->num_rates * sizeof(struct wpa_rate_data);
2434 feature = &modes[i];
2435 switch (hdr->mode) {
2436 case MODE_IEEE80211A:
2437 feature->mode = WPA_MODE_IEEE80211A;
2439 case MODE_IEEE80211B:
2440 feature->mode = WPA_MODE_IEEE80211B;
2442 case MODE_IEEE80211G:
2443 feature->mode = WPA_MODE_IEEE80211G;
2445 case MODE_ATHEROS_TURBO:
2446 case MODE_ATHEROS_TURBOG:
2447 wpa_printf(MSG_ERROR, "Skip unsupported hw_mode=%d in "
2448 "get_hw_features data", hdr->mode);
2452 wpa_printf(MSG_ERROR, "Unknown hw_mode=%d in "
2453 "get_hw_features data", hdr->mode);
2454 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2458 feature->num_channels = hdr->num_channels;
2459 feature->num_rates = hdr->num_rates;
2461 feature->channels = os_malloc(clen);
2462 feature->rates = os_malloc(rlen);
2463 if (!feature->channels || !feature->rates ||
2464 pos + clen + rlen > end) {
2465 wpa_supplicant_sta_free_hw_features(modes, *num_modes);
2470 os_memcpy(feature->channels, pos, clen);
2472 os_memcpy(feature->rates, pos, rlen);
2482 int wpa_driver_wext_set_channel(void *priv, wpa_hw_mode phymode, int chan,
2485 return wpa_driver_wext_set_freq(priv, freq);
2489 static void wpa_driver_wext_mlme_read(int sock, void *eloop_ctx,
2492 struct wpa_driver_wext_data *drv = eloop_ctx;
2494 unsigned char buf[3000];
2495 struct ieee80211_frame_info *fi;
2496 struct ieee80211_rx_status rx_status;
2498 len = recv(sock, buf, sizeof(buf), 0);
2500 perror("recv[MLME]");
2504 if (len < (int) sizeof(struct ieee80211_frame_info)) {
2505 wpa_printf(MSG_DEBUG, "WEXT: Too short MLME frame (len=%d)",
2510 fi = (struct ieee80211_frame_info *) buf;
2511 if (ntohl(fi->version) != IEEE80211_FI_VERSION) {
2512 wpa_printf(MSG_DEBUG, "WEXT: Invalid MLME frame info version "
2513 "0x%x", ntohl(fi->version));
2517 os_memset(&rx_status, 0, sizeof(rx_status));
2518 rx_status.ssi = ntohl(fi->ssi_signal);
2519 rx_status.channel = ntohl(fi->channel);
2521 wpa_supplicant_sta_rx(drv->ctx,
2522 buf + sizeof(struct ieee80211_frame_info),
2523 len - sizeof(struct ieee80211_frame_info),
2528 static int wpa_driver_wext_open_mlme(struct wpa_driver_wext_data *drv)
2530 int flags, ifindex, s;
2531 struct sockaddr_ll addr;
2534 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_USER_SPACE_MLME, 1) <
2536 wpa_printf(MSG_ERROR, "WEXT: Failed to configure driver to "
2537 "use user space MLME");
2541 if (wpa_driver_prism2_param_set(drv, PRISM2_PARAM_MGMT_IF, 1) < 0) {
2542 wpa_printf(MSG_ERROR, "WEXT: Failed to add management "
2543 "interface for user space MLME");
2547 ifindex = wpa_driver_prism2_param_get(drv, PRISM2_PARAM_MGMT_IF);
2549 wpa_printf(MSG_ERROR, "WEXT: MLME management device not "
2554 os_memset(&ifr, 0, sizeof(ifr));
2555 ifr.ifr_ifindex = ifindex;
2556 if (ioctl(drv->ioctl_sock, SIOCGIFNAME, &ifr) != 0) {
2557 perror("ioctl(SIOCGIFNAME)");
2560 os_strlcpy(drv->mlmedev, ifr.ifr_name, sizeof(drv->mlmedev));
2561 wpa_printf(MSG_DEBUG, "WEXT: MLME management device '%s'",
2564 if (wpa_driver_wext_get_ifflags_ifname(drv, drv->mlmedev, &flags) != 0
2565 || wpa_driver_wext_set_ifflags_ifname(drv, drv->mlmedev,
2566 flags | IFF_UP) != 0) {
2567 wpa_printf(MSG_ERROR, "WEXT: Could not set interface "
2568 "'%s' UP", drv->mlmedev);
2572 s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2574 perror("socket[PF_PACKET,SOCK_RAW]");
2578 os_memset(&addr, 0, sizeof(addr));
2579 addr.sll_family = AF_PACKET;
2580 addr.sll_ifindex = ifindex;
2582 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2583 perror("bind(MLME)");
2587 if (eloop_register_read_sock(s, wpa_driver_wext_mlme_read, drv, NULL))
2589 wpa_printf(MSG_ERROR, "WEXT: Could not register MLME read "
2599 static int wpa_driver_wext_send_mlme(void *priv, const u8 *data,
2602 struct wpa_driver_wext_data *drv = priv;
2605 ret = send(drv->mlme_sock, data, data_len, 0);
2607 perror("send[MLME]");
2615 static int wpa_driver_wext_mlme_add_sta(void *priv, const u8 *addr,
2616 const u8 *supp_rates,
2617 size_t supp_rates_len)
2619 struct wpa_driver_wext_data *drv = priv;
2620 struct prism2_hostapd_param param;
2623 os_memset(¶m, 0, sizeof(param));
2624 param.cmd = PRISM2_HOSTAPD_ADD_STA;
2625 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2626 len = supp_rates_len;
2627 if (len > sizeof(param.u.add_sta.supp_rates))
2628 len = sizeof(param.u.add_sta.supp_rates);
2629 os_memcpy(param.u.add_sta.supp_rates, supp_rates, len);
2630 return hostapd_ioctl(drv, ¶m, sizeof(param));
2634 static int wpa_driver_wext_mlme_remove_sta(void *priv, const u8 *addr)
2636 struct wpa_driver_wext_data *drv = priv;
2637 struct prism2_hostapd_param param;
2639 os_memset(¶m, 0, sizeof(param));
2640 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
2641 os_memcpy(param.sta_addr, addr, ETH_ALEN);
2642 return hostapd_ioctl(drv, ¶m, sizeof(param));
2645 #endif /* CONFIG_CLIENT_MLME */
2648 static int wpa_driver_wext_set_param(void *priv, const char *param)
2650 #ifdef CONFIG_CLIENT_MLME
2651 struct wpa_driver_wext_data *drv = priv;
2656 wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
2658 if (os_strstr(param, "use_mlme=1")) {
2659 wpa_printf(MSG_DEBUG, "WEXT: Using user space MLME");
2660 drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME;
2662 drv->mlme_sock = wpa_driver_wext_open_mlme(drv);
2663 if (drv->mlme_sock < 0)
2666 #endif /* CONFIG_CLIENT_MLME */
2672 int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv)
2674 return drv->we_version_compiled;
2678 const struct wpa_driver_ops wpa_driver_wext_ops = {
2680 .desc = "Linux wireless extensions (generic)",
2681 .get_bssid = wpa_driver_wext_get_bssid,
2682 .get_ssid = wpa_driver_wext_get_ssid,
2683 .set_wpa = wpa_driver_wext_set_wpa,
2684 .set_key = wpa_driver_wext_set_key,
2685 .set_countermeasures = wpa_driver_wext_set_countermeasures,
2686 .set_drop_unencrypted = wpa_driver_wext_set_drop_unencrypted,
2687 .scan = wpa_driver_wext_scan,
2688 .get_scan_results2 = wpa_driver_wext_get_scan_results,
2689 .deauthenticate = wpa_driver_wext_deauthenticate,
2690 .disassociate = wpa_driver_wext_disassociate,
2691 .associate = wpa_driver_wext_associate,
2692 .set_auth_alg = wpa_driver_wext_set_auth_alg,
2693 .init = wpa_driver_wext_init,
2694 .deinit = wpa_driver_wext_deinit,
2695 .set_param = wpa_driver_wext_set_param,
2696 .add_pmkid = wpa_driver_wext_add_pmkid,
2697 .remove_pmkid = wpa_driver_wext_remove_pmkid,
2698 .flush_pmkid = wpa_driver_wext_flush_pmkid,
2699 .get_capa = wpa_driver_wext_get_capa,
2700 .set_operstate = wpa_driver_wext_set_operstate,
2701 #ifdef CONFIG_CLIENT_MLME
2702 .get_hw_feature_data = wpa_driver_wext_get_hw_feature_data,
2703 .set_channel = wpa_driver_wext_set_channel,
2704 .set_ssid = wpa_driver_wext_set_ssid,
2705 .set_bssid = wpa_driver_wext_set_bssid,
2706 .send_mlme = wpa_driver_wext_send_mlme,
2707 .mlme_add_sta = wpa_driver_wext_mlme_add_sta,
2708 .mlme_remove_sta = wpa_driver_wext_mlme_remove_sta,
2709 #endif /* CONFIG_CLIENT_MLME */