2 * WPA Supplicant - driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2003-2008, 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.
16 #include <sys/ioctl.h>
17 #include <net/if_arp.h>
18 #include <netlink/genl/genl.h>
19 #include <netlink/genl/family.h>
20 #include <netlink/genl/ctrl.h>
21 #include "nl80211_copy.h"
22 #include "wireless_copy.h"
27 #include "ieee802_11_defs.h"
30 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
33 #define IFF_DORMANT 0x20000 /* driver signals dormant */
36 #ifndef IF_OPER_DORMANT
37 #define IF_OPER_DORMANT 5
44 #ifndef NO_WEXT_COMPAT
46 * Fall back to WEXT association, if the kernel does not support nl80211 MLME
47 * commands. This is temporary backwards compatibility version that will be
48 * removed at some point.
51 #endif /* NO_WEXT_COMPAT */
54 struct wpa_driver_nl80211_data {
58 char ifname[IFNAMSIZ + 1];
61 struct wpa_driver_capa capa;
63 int we_version_compiled;
67 size_t assoc_req_ies_len;
69 size_t assoc_resp_ies_len;
71 /* for set_auth_alg fallback */
73 int auth_alg_fallback;
74 #endif /* WEXT_COMPAT */
78 char mlmedev[IFNAMSIZ + 1];
80 int scan_complete_events;
82 struct nl_handle *nl_handle;
83 struct nl_cache *nl_cache;
85 struct genl_family *nl80211;
92 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
94 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
95 static int wpa_driver_nl80211_flush_pmkid(void *priv);
96 static int wpa_driver_nl80211_get_range(void *priv);
98 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
102 static int ack_handler(struct nl_msg *msg, void *arg)
109 static int finish_handler(struct nl_msg *msg, void *arg)
116 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
124 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
126 int (*valid_handler)(struct nl_msg *, void *),
132 cb = nl_cb_clone(drv->nl_cb);
136 err = nl_send_auto_complete(drv->nl_handle, msg);
142 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
143 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
144 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
147 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
148 valid_handler, valid_data);
151 nl_recvmsgs(drv->nl_handle, cb);
165 static int family_handler(struct nl_msg *msg, void *arg)
167 struct family_data *res = arg;
168 struct nlattr *tb[CTRL_ATTR_MAX + 1];
169 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
170 struct nlattr *mcgrp;
173 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
174 genlmsg_attrlen(gnlh, 0), NULL);
175 if (!tb[CTRL_ATTR_MCAST_GROUPS])
178 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
179 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
180 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
181 nla_len(mcgrp), NULL);
182 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
183 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
184 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
186 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
188 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
196 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
197 const char *family, const char *group)
201 struct family_data res = { group, -ENOENT };
206 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
207 0, 0, CTRL_CMD_GETFAMILY, 0);
208 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
210 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
221 static int wpa_driver_nl80211_send_oper_ifla(
222 struct wpa_driver_nl80211_data *drv,
223 int linkmode, int operstate)
227 struct ifinfomsg ifinfo;
234 os_memset(&req, 0, sizeof(req));
236 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
237 req.hdr.nlmsg_type = RTM_SETLINK;
238 req.hdr.nlmsg_flags = NLM_F_REQUEST;
239 req.hdr.nlmsg_seq = ++nl_seq;
240 req.hdr.nlmsg_pid = 0;
242 req.ifinfo.ifi_family = AF_UNSPEC;
243 req.ifinfo.ifi_type = 0;
244 req.ifinfo.ifi_index = drv->ifindex;
245 req.ifinfo.ifi_flags = 0;
246 req.ifinfo.ifi_change = 0;
248 if (linkmode != -1) {
249 rta = (struct rtattr *)
250 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
251 rta->rta_type = IFLA_LINKMODE;
252 rta->rta_len = RTA_LENGTH(sizeof(char));
253 *((char *) RTA_DATA(rta)) = linkmode;
254 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
255 RTA_LENGTH(sizeof(char));
257 if (operstate != -1) {
258 rta = (struct rtattr *)
259 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
260 rta->rta_type = IFLA_OPERSTATE;
261 rta->rta_len = RTA_LENGTH(sizeof(char));
262 *((char *) RTA_DATA(rta)) = operstate;
263 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
264 RTA_LENGTH(sizeof(char));
267 wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d",
268 linkmode, operstate);
270 ret = send(drv->wext_event_sock, &req, req.hdr.nlmsg_len, 0);
272 wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: "
273 "%s (assume operstate is not supported)",
277 return ret < 0 ? -1 : 0;
281 static int wpa_driver_nl80211_set_auth_param(
282 struct wpa_driver_nl80211_data *drv, int idx, u32 value)
287 os_memset(&iwr, 0, sizeof(iwr));
288 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
289 iwr.u.param.flags = idx & IW_AUTH_INDEX;
290 iwr.u.param.value = value;
292 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
293 if (errno != EOPNOTSUPP) {
294 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
295 "value 0x%x) failed: %s)",
296 idx, value, strerror(errno));
298 ret = errno == EOPNOTSUPP ? -2 : -1;
305 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
307 struct wpa_driver_nl80211_data *drv = priv;
309 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
313 os_memset(&iwr, 0, sizeof(iwr));
314 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
316 if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) {
317 perror("ioctl[SIOCGIWAP]");
320 os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN);
324 #endif /* WEXT_COMPAT */
325 if (!drv->associated)
327 os_memcpy(bssid, drv->bssid, ETH_ALEN);
332 static int wpa_driver_nl80211_set_bssid(void *priv, const u8 *bssid)
334 struct wpa_driver_nl80211_data *drv = priv;
338 os_memset(&iwr, 0, sizeof(iwr));
339 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
340 iwr.u.ap_addr.sa_family = ARPHRD_ETHER;
342 os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN);
344 os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN);
346 if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) {
347 perror("ioctl[SIOCSIWAP]");
355 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
357 struct wpa_driver_nl80211_data *drv = priv;
361 os_memset(&iwr, 0, sizeof(iwr));
362 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
363 iwr.u.essid.pointer = (caddr_t) ssid;
364 iwr.u.essid.length = 32;
366 if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
367 perror("ioctl[SIOCGIWESSID]");
370 ret = iwr.u.essid.length;
373 /* Some drivers include nul termination in the SSID, so let's
374 * remove it here before further processing. WE-21 changes this
375 * to explicitly require the length _not_ to include nul
377 if (ret > 0 && ssid[ret - 1] == '\0' &&
378 drv->we_version_compiled < 21)
387 static int wpa_driver_nl80211_set_ssid(void *priv, const u8 *ssid,
390 struct wpa_driver_nl80211_data *drv = priv;
398 os_memset(&iwr, 0, sizeof(iwr));
399 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
400 /* flags: 1 = ESSID is active, 0 = not (promiscuous) */
401 iwr.u.essid.flags = (ssid_len != 0);
402 os_memset(buf, 0, sizeof(buf));
403 os_memcpy(buf, ssid, ssid_len);
404 iwr.u.essid.pointer = (caddr_t) buf;
405 if (drv->we_version_compiled < 21) {
406 /* For historic reasons, set SSID length to include one extra
407 * character, C string nul termination, even though SSID is
408 * really an octet string that should not be presented as a C
409 * string. Some Linux drivers decrement the length by one and
410 * can thus end up missing the last octet of the SSID if the
411 * length is not incremented here. WE-21 changes this to
412 * explicitly require the length _not_ to include nul
417 iwr.u.essid.length = ssid_len;
419 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
420 perror("ioctl[SIOCSIWESSID]");
428 static int wpa_driver_nl80211_set_freq(void *priv, int freq)
430 struct wpa_driver_nl80211_data *drv = priv;
434 os_memset(&iwr, 0, sizeof(iwr));
435 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
436 iwr.u.freq.m = freq * 100000;
439 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
440 perror("ioctl[SIOCSIWFREQ]");
449 wpa_driver_nl80211_event_wireless_custom(void *ctx, char *custom)
451 union wpa_event_data data;
453 wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'",
456 os_memset(&data, 0, sizeof(data));
458 if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
459 data.michael_mic_failure.unicast =
460 os_strstr(custom, " unicast ") != NULL;
461 /* TODO: parse parameters(?) */
462 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
463 } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) {
469 bytes = strspn(spos, "0123456789abcdefABCDEF");
470 if (!bytes || (bytes & 1))
474 data.assoc_info.req_ies = os_malloc(bytes);
475 if (data.assoc_info.req_ies == NULL)
478 data.assoc_info.req_ies_len = bytes;
479 hexstr2bin(spos, data.assoc_info.req_ies, bytes);
483 data.assoc_info.resp_ies = NULL;
484 data.assoc_info.resp_ies_len = 0;
486 if (os_strncmp(spos, " RespIEs=", 9) == 0) {
489 bytes = strspn(spos, "0123456789abcdefABCDEF");
490 if (!bytes || (bytes & 1))
494 data.assoc_info.resp_ies = os_malloc(bytes);
495 if (data.assoc_info.resp_ies == NULL)
498 data.assoc_info.resp_ies_len = bytes;
499 hexstr2bin(spos, data.assoc_info.resp_ies, bytes);
502 wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
505 os_free(data.assoc_info.resp_ies);
506 os_free(data.assoc_info.req_ies);
507 #ifdef CONFIG_PEERKEY
508 } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) {
509 if (hwaddr_aton(custom + 17, data.stkstart.peer)) {
510 wpa_printf(MSG_DEBUG, "WEXT: unrecognized "
511 "STKSTART.request '%s'", custom + 17);
514 wpa_supplicant_event(ctx, EVENT_STKSTART, &data);
515 #endif /* CONFIG_PEERKEY */
518 #endif /* WEXT_COMPAT */
521 static int wpa_driver_nl80211_event_wireless_michaelmicfailure(
522 void *ctx, const char *ev, size_t len)
524 const struct iw_michaelmicfailure *mic;
525 union wpa_event_data data;
527 if (len < sizeof(*mic))
530 mic = (const struct iw_michaelmicfailure *) ev;
532 wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: "
533 "flags=0x%x src_addr=" MACSTR, mic->flags,
534 MAC2STR(mic->src_addr.sa_data));
536 os_memset(&data, 0, sizeof(data));
537 data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP);
538 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
544 static int wpa_driver_nl80211_event_wireless_pmkidcand(
545 struct wpa_driver_nl80211_data *drv, const char *ev, size_t len)
547 const struct iw_pmkid_cand *cand;
548 union wpa_event_data data;
551 if (len < sizeof(*cand))
554 cand = (const struct iw_pmkid_cand *) ev;
555 addr = (const u8 *) cand->bssid.sa_data;
557 wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: "
558 "flags=0x%x index=%d bssid=" MACSTR, cand->flags,
559 cand->index, MAC2STR(addr));
561 os_memset(&data, 0, sizeof(data));
562 os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN);
563 data.pmkid_candidate.index = cand->index;
564 data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH;
565 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
572 static int wpa_driver_nl80211_event_wireless_assocreqie(
573 struct wpa_driver_nl80211_data *drv, const char *ev, int len)
578 wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev,
580 os_free(drv->assoc_req_ies);
581 drv->assoc_req_ies = os_malloc(len);
582 if (drv->assoc_req_ies == NULL) {
583 drv->assoc_req_ies_len = 0;
586 os_memcpy(drv->assoc_req_ies, ev, len);
587 drv->assoc_req_ies_len = len;
593 static int wpa_driver_nl80211_event_wireless_assocrespie(
594 struct wpa_driver_nl80211_data *drv, const char *ev, int len)
599 wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev,
601 os_free(drv->assoc_resp_ies);
602 drv->assoc_resp_ies = os_malloc(len);
603 if (drv->assoc_resp_ies == NULL) {
604 drv->assoc_resp_ies_len = 0;
607 os_memcpy(drv->assoc_resp_ies, ev, len);
608 drv->assoc_resp_ies_len = len;
614 static void wpa_driver_nl80211_event_assoc_ies(struct wpa_driver_nl80211_data *drv)
616 union wpa_event_data data;
618 if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL)
621 os_memset(&data, 0, sizeof(data));
622 if (drv->assoc_req_ies) {
623 data.assoc_info.req_ies = drv->assoc_req_ies;
624 drv->assoc_req_ies = NULL;
625 data.assoc_info.req_ies_len = drv->assoc_req_ies_len;
627 if (drv->assoc_resp_ies) {
628 data.assoc_info.resp_ies = drv->assoc_resp_ies;
629 drv->assoc_resp_ies = NULL;
630 data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len;
633 wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data);
635 os_free(data.assoc_info.req_ies);
636 os_free(data.assoc_info.resp_ies);
638 #endif /* WEXT_COMPAT */
641 static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *drv,
642 void *ctx, char *data, int len)
644 struct iw_event iwe_buf, *iwe = &iwe_buf;
645 char *pos, *end, *custom;
648 #endif /* WEXT_COMPAT */
653 while (pos + IW_EV_LCP_LEN <= end) {
654 /* Event data may be unaligned, so make a local, aligned copy
655 * before processing. */
656 os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
657 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
659 if (iwe->len <= IW_EV_LCP_LEN)
662 custom = pos + IW_EV_POINT_LEN;
663 if (drv->we_version_compiled > 18 &&
664 (iwe->cmd == IWEVMICHAELMICFAILURE ||
665 iwe->cmd == IWEVCUSTOM ||
666 iwe->cmd == IWEVASSOCREQIE ||
667 iwe->cmd == IWEVASSOCRESPIE ||
668 iwe->cmd == IWEVPMKIDCAND)) {
669 /* WE-19 removed the pointer from struct iw_point */
670 char *dpos = (char *) &iwe_buf.u.data.length;
671 int dlen = dpos - (char *) &iwe_buf;
672 os_memcpy(dpos, pos + IW_EV_LCP_LEN,
673 sizeof(struct iw_event) - dlen);
675 os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
676 custom += IW_EV_POINT_OFF;
682 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
684 wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
686 MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
687 if (is_zero_ether_addr(
688 (const u8 *) iwe->u.ap_addr.sa_data) ||
689 os_memcmp(iwe->u.ap_addr.sa_data,
690 "\x44\x44\x44\x44\x44\x44", ETH_ALEN) ==
692 os_free(drv->assoc_req_ies);
693 drv->assoc_req_ies = NULL;
694 os_free(drv->assoc_resp_ies);
695 drv->assoc_resp_ies = NULL;
696 wpa_supplicant_event(ctx, EVENT_DISASSOC,
700 wpa_driver_nl80211_event_assoc_ies(drv);
701 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
704 #endif /* WEXT_COMPAT */
705 case IWEVMICHAELMICFAILURE:
706 wpa_driver_nl80211_event_wireless_michaelmicfailure(
707 ctx, custom, iwe->u.data.length);
711 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
713 if (custom + iwe->u.data.length > end)
715 buf = os_malloc(iwe->u.data.length + 1);
718 os_memcpy(buf, custom, iwe->u.data.length);
719 buf[iwe->u.data.length] = '\0';
720 wpa_driver_nl80211_event_wireless_custom(ctx, buf);
724 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
726 wpa_driver_nl80211_event_wireless_assocreqie(
727 drv, custom, iwe->u.data.length);
729 case IWEVASSOCRESPIE:
730 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
732 wpa_driver_nl80211_event_wireless_assocrespie(
733 drv, custom, iwe->u.data.length);
735 #endif /* WEXT_COMPAT */
737 wpa_driver_nl80211_event_wireless_pmkidcand(
738 drv, custom, iwe->u.data.length);
747 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
748 void *ctx, char *buf, size_t len,
751 union wpa_event_data event;
753 os_memset(&event, 0, sizeof(event));
754 if (len > sizeof(event.interface_status.ifname))
755 len = sizeof(event.interface_status.ifname) - 1;
756 os_memcpy(event.interface_status.ifname, buf, len);
757 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
758 EVENT_INTERFACE_ADDED;
760 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
762 event.interface_status.ifname,
763 del ? "removed" : "added");
765 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
772 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
776 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
779 struct ifinfomsg *ifi;
780 int attrlen, _nlmsg_len, rta_len;
785 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
787 attrlen = h->nlmsg_len - _nlmsg_len;
791 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
793 rta_len = RTA_ALIGN(sizeof(struct rtattr));
794 while (RTA_OK(attr, attrlen)) {
795 if (attr->rta_type == IFLA_IFNAME) {
796 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
802 attr = RTA_NEXT(attr, attrlen);
809 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
810 int ifindex, struct nlmsghdr *h)
812 if (drv->ifindex == ifindex)
815 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
816 drv->ifindex = if_nametoindex(drv->ifname);
817 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
819 wpa_driver_nl80211_finish_drv_init(drv);
827 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
828 void *ctx, struct nlmsghdr *h,
831 struct ifinfomsg *ifi;
832 int attrlen, _nlmsg_len, rta_len;
833 struct rtattr * attr;
835 if (len < sizeof(*ifi))
840 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
841 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
846 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
848 drv->operstate, ifi->ifi_flags,
849 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
850 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
851 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
852 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
854 * Some drivers send the association event before the operup event--in
855 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
856 * fails. This will hit us when wpa_supplicant does not need to do
857 * IEEE 802.1X authentication
859 if (drv->operstate == 1 &&
860 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
861 !(ifi->ifi_flags & IFF_RUNNING))
862 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
864 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
866 attrlen = h->nlmsg_len - _nlmsg_len;
870 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
872 rta_len = RTA_ALIGN(sizeof(struct rtattr));
873 while (RTA_OK(attr, attrlen)) {
874 if (attr->rta_type == IFLA_WIRELESS) {
875 wpa_driver_nl80211_event_wireless(
876 drv, ctx, ((char *) attr) + rta_len,
877 attr->rta_len - rta_len);
878 } else if (attr->rta_type == IFLA_IFNAME) {
879 wpa_driver_nl80211_event_link(
881 ((char *) attr) + rta_len,
882 attr->rta_len - rta_len, 0);
884 attr = RTA_NEXT(attr, attrlen);
889 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
890 void *ctx, struct nlmsghdr *h,
893 struct ifinfomsg *ifi;
894 int attrlen, _nlmsg_len, rta_len;
895 struct rtattr * attr;
897 if (len < sizeof(*ifi))
902 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
904 attrlen = h->nlmsg_len - _nlmsg_len;
908 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
910 rta_len = RTA_ALIGN(sizeof(struct rtattr));
911 while (RTA_OK(attr, attrlen)) {
912 if (attr->rta_type == IFLA_IFNAME) {
913 wpa_driver_nl80211_event_link(
915 ((char *) attr) + rta_len,
916 attr->rta_len - rta_len, 1);
918 attr = RTA_NEXT(attr, attrlen);
923 static void wpa_driver_nl80211_event_receive_wext(int sock, void *eloop_ctx,
928 struct sockaddr_nl from;
934 fromlen = sizeof(from);
935 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
936 (struct sockaddr *) &from, &fromlen);
938 if (errno != EINTR && errno != EAGAIN)
939 perror("recvfrom(netlink)");
943 h = (struct nlmsghdr *) buf;
944 while (left >= (int) sizeof(*h)) {
948 plen = len - sizeof(*h);
949 if (len > left || plen < 0) {
950 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
951 "len=%d left=%d plen=%d",
956 switch (h->nlmsg_type) {
958 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
962 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
967 len = NLMSG_ALIGN(len);
969 h = (struct nlmsghdr *) ((char *) h + len);
973 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
977 if (--max_events > 0) {
979 * Try to receive all events in one eloop call in order to
980 * limit race condition on cases where AssocInfo event, Assoc
981 * event, and EAPOL frames are received more or less at the
982 * same time. We want to process the event messages first
983 * before starting EAPOL processing.
990 static int no_seq_check(struct nl_msg *msg, void *arg)
996 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
997 const u8 *frame, size_t len)
999 const struct ieee80211_mgmt *mgmt;
1000 union wpa_event_data event;
1002 mgmt = (const struct ieee80211_mgmt *) frame;
1003 if (len < 24 + sizeof(mgmt->u.auth)) {
1004 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1009 os_memset(&event, 0, sizeof(event));
1010 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1011 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1012 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1013 if (len > 24 + sizeof(mgmt->u.auth)) {
1014 event.auth.ies = mgmt->u.auth.variable;
1015 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1018 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1022 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1023 const u8 *frame, size_t len)
1025 const struct ieee80211_mgmt *mgmt;
1026 union wpa_event_data event;
1029 mgmt = (const struct ieee80211_mgmt *) frame;
1030 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1031 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1036 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1037 if (status != WLAN_STATUS_SUCCESS) {
1038 wpa_printf(MSG_DEBUG, "nl80211: Association failed: status "
1040 /* TODO: notify SME so that things like SA Query and comeback
1041 * time can be implemented */
1045 drv->associated = 1;
1046 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1048 os_memset(&event, 0, sizeof(event));
1049 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1050 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1051 event.assoc_info.resp_ies_len =
1052 len - 24 - sizeof(mgmt->u.assoc_req);
1055 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1059 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1060 enum nl80211_commands cmd, struct nlattr *frame)
1062 if (frame == NULL) {
1063 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1068 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1069 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1070 nla_data(frame), nla_len(frame));
1073 case NL80211_CMD_AUTHENTICATE:
1074 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1076 case NL80211_CMD_ASSOCIATE:
1077 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1079 case NL80211_CMD_DEAUTHENTICATE:
1080 drv->associated = 0;
1081 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
1083 case NL80211_CMD_DISASSOCIATE:
1084 drv->associated = 0;
1085 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
1093 static int process_event(struct nl_msg *msg, void *arg)
1095 struct wpa_driver_nl80211_data *drv = arg;
1096 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1097 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1099 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1100 genlmsg_attrlen(gnlh, 0), NULL);
1102 if (tb[NL80211_ATTR_IFINDEX]) {
1103 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1104 if (ifindex != drv->ifindex) {
1105 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1106 " for foreign interface (ifindex %d)",
1107 gnlh->cmd, ifindex);
1112 switch (gnlh->cmd) {
1113 case NL80211_CMD_NEW_SCAN_RESULTS:
1114 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1115 drv->scan_complete_events = 1;
1116 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1118 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
1120 case NL80211_CMD_SCAN_ABORTED:
1121 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1123 * Need to indicate that scan results are available in order
1124 * not to make wpa_supplicant stop its scanning.
1126 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1128 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
1130 case NL80211_CMD_AUTHENTICATE:
1131 case NL80211_CMD_ASSOCIATE:
1132 case NL80211_CMD_DEAUTHENTICATE:
1133 case NL80211_CMD_DISASSOCIATE:
1134 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]);
1137 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1138 "(cmd=%d)", gnlh->cmd);
1146 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1150 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1152 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1154 cb = nl_cb_clone(drv->nl_cb);
1157 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1158 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1159 nl_recvmsgs(drv->nl_handle, cb);
1164 static int wpa_driver_nl80211_get_ifflags_ifname(struct wpa_driver_nl80211_data *drv,
1165 const char *ifname, int *flags)
1169 os_memset(&ifr, 0, sizeof(ifr));
1170 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
1171 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
1172 perror("ioctl[SIOCGIFFLAGS]");
1175 *flags = ifr.ifr_flags & 0xffff;
1181 * wpa_driver_nl80211_get_ifflags - Get interface flags (SIOCGIFFLAGS)
1182 * @drv: driver_nl80211 private data
1183 * @flags: Pointer to returned flags value
1184 * Returns: 0 on success, -1 on failure
1186 static int wpa_driver_nl80211_get_ifflags(struct wpa_driver_nl80211_data *drv,
1189 return wpa_driver_nl80211_get_ifflags_ifname(drv, drv->ifname, flags);
1193 static int wpa_driver_nl80211_set_ifflags_ifname(
1194 struct wpa_driver_nl80211_data *drv,
1195 const char *ifname, int flags)
1199 os_memset(&ifr, 0, sizeof(ifr));
1200 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
1201 ifr.ifr_flags = flags & 0xffff;
1202 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
1203 perror("SIOCSIFFLAGS");
1211 * wpa_driver_nl80211_set_ifflags - Set interface flags (SIOCSIFFLAGS)
1212 * @drv: driver_nl80211 private data
1213 * @flags: New value for flags
1214 * Returns: 0 on success, -1 on failure
1216 static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv,
1219 return wpa_driver_nl80211_set_ifflags_ifname(drv, drv->ifname, flags);
1224 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1225 * @priv: driver_nl80211 private data
1226 * @alpha2_arg: country to which to switch to
1227 * Returns: 0 on success, -1 on failure
1229 * This asks nl80211 to set the regulatory domain for given
1230 * country ISO / IEC alpha2.
1232 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1234 struct wpa_driver_nl80211_data *drv = priv;
1238 msg = nlmsg_alloc();
1240 goto nla_put_failure;
1242 alpha2[0] = alpha2_arg[0];
1243 alpha2[1] = alpha2_arg[1];
1246 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1247 0, NL80211_CMD_REQ_SET_REG, 0);
1249 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1250 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1258 struct wiphy_info_data {
1263 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1265 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1266 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1267 struct wiphy_info_data *info = arg;
1269 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1270 genlmsg_attrlen(gnlh, 0), NULL);
1272 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1273 info->max_scan_ssids =
1274 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1280 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1281 struct wiphy_info_data *info)
1285 os_memset(info, 0, sizeof(*info));
1286 msg = nlmsg_alloc();
1290 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1291 0, NL80211_CMD_GET_WIPHY, 0);
1293 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1295 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1304 static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1306 struct wiphy_info_data info;
1307 if (wpa_driver_nl80211_get_info(drv, &info))
1309 drv->has_capability = 1;
1310 drv->capa.max_scan_ssids = info.max_scan_ssids;
1315 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1316 * @ctx: context to be used when calling wpa_supplicant functions,
1317 * e.g., wpa_supplicant_event()
1318 * @ifname: interface name, e.g., wlan0
1319 * Returns: Pointer to private data, %NULL on failure
1321 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1324 struct sockaddr_nl local;
1325 struct wpa_driver_nl80211_data *drv;
1327 drv = os_zalloc(sizeof(*drv));
1331 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1333 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1334 if (drv->nl_cb == NULL) {
1335 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1340 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1341 if (drv->nl_handle == NULL) {
1342 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1347 if (genl_connect(drv->nl_handle)) {
1348 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1353 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1354 if (drv->nl_cache == NULL) {
1355 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1360 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1361 if (drv->nl80211 == NULL) {
1362 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1367 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1369 ret = nl_socket_add_membership(drv->nl_handle, ret);
1371 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1372 "membership for scan events: %d (%s)",
1373 ret, strerror(-ret));
1377 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1379 ret = nl_socket_add_membership(drv->nl_handle, ret);
1382 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1383 "membership for mlme events: %d (%s)",
1384 ret, strerror(-ret));
1385 /* Use WEXT for association request */
1387 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1388 #else /* WEXT_COMPAT */
1390 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1391 "membership for mlme events: %d (%s)",
1392 ret, strerror(-ret));
1395 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1396 #endif /* WEXT_COMPAT */
1398 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
1399 wpa_driver_nl80211_event_receive, drv, ctx);
1401 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1402 if (drv->ioctl_sock < 0) {
1403 perror("socket(PF_INET,SOCK_DGRAM)");
1407 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1409 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1413 os_memset(&local, 0, sizeof(local));
1414 local.nl_family = AF_NETLINK;
1415 local.nl_groups = RTMGRP_LINK;
1416 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1417 perror("bind(netlink)");
1422 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_wext, drv,
1424 drv->wext_event_sock = s;
1426 if (wpa_driver_nl80211_finish_drv_init(drv))
1432 eloop_unregister_read_sock(drv->wext_event_sock);
1433 close(drv->wext_event_sock);
1435 close(drv->ioctl_sock);
1437 genl_family_put(drv->nl80211);
1439 nl_cache_free(drv->nl_cache);
1441 nl_handle_destroy(drv->nl_handle);
1443 nl_cb_put(drv->nl_cb);
1451 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1455 if (wpa_driver_nl80211_get_ifflags(drv, &flags) != 0) {
1456 wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
1460 if (!(flags & IFF_UP)) {
1461 if (wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP) != 0) {
1462 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1469 * Make sure that the driver does not have any obsolete PMKID entries.
1471 wpa_driver_nl80211_flush_pmkid(drv);
1473 if (wpa_driver_nl80211_set_mode(drv, 0) < 0) {
1474 printf("Could not configure driver to use managed mode\n");
1477 wpa_driver_nl80211_get_range(drv);
1479 drv->ifindex = if_nametoindex(drv->ifname);
1481 wpa_driver_nl80211_capa(drv);
1483 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1490 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1491 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1493 * Shut down driver interface and processing of driver events. Free
1494 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1496 static void wpa_driver_nl80211_deinit(void *priv)
1498 struct wpa_driver_nl80211_data *drv = priv;
1501 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1504 * Clear possibly configured driver parameters in order to make it
1505 * easier to use the driver after wpa_supplicant has been terminated.
1507 (void) wpa_driver_nl80211_set_bssid(drv,
1508 (u8 *) "\x00\x00\x00\x00\x00\x00");
1510 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1512 eloop_unregister_read_sock(drv->wext_event_sock);
1514 if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0)
1515 (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
1517 close(drv->wext_event_sock);
1518 close(drv->ioctl_sock);
1520 os_free(drv->assoc_req_ies);
1521 os_free(drv->assoc_resp_ies);
1522 #endif /* WEXT_COMPAT */
1524 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
1525 genl_family_put(drv->nl80211);
1526 nl_cache_free(drv->nl_cache);
1527 nl_handle_destroy(drv->nl_handle);
1528 nl_cb_put(drv->nl_cb);
1535 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1536 * @eloop_ctx: Unused
1537 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1539 * This function can be used as registered timeout when starting a scan to
1540 * generate a scan completed event if the driver does not report this.
1542 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1544 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1545 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1550 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1551 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1552 * @params: Scan parameters
1553 * Returns: 0 on success, -1 on failure
1555 static int wpa_driver_nl80211_scan(void *priv,
1556 struct wpa_driver_scan_params *params)
1558 struct wpa_driver_nl80211_data *drv = priv;
1559 int ret = 0, timeout;
1560 struct nl_msg *msg, *ssids;
1563 msg = nlmsg_alloc();
1564 ssids = nlmsg_alloc();
1565 if (!msg || !ssids) {
1571 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1572 NL80211_CMD_TRIGGER_SCAN, 0);
1574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1576 for (i = 0; i < params->num_ssids; i++) {
1577 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1578 params->ssids[i].ssid);
1580 if (params->num_ssids)
1581 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1583 if (params->extra_ies) {
1584 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1588 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1591 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1592 "(%s)", ret, strerror(-ret));
1593 goto nla_put_failure;
1596 /* Not all drivers generate "scan completed" wireless event, so try to
1597 * read results after a timeout. */
1599 if (drv->scan_complete_events) {
1601 * The driver seems to deliver events to notify when scan is
1602 * complete, so use longer timeout to avoid race conditions
1603 * with scanning and following association request.
1607 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1608 "seconds", ret, timeout);
1609 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1610 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1620 static int bss_info_handler(struct nl_msg *msg, void *arg)
1622 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1623 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1624 struct nlattr *bss[NL80211_BSS_MAX + 1];
1625 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1626 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1627 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1628 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1629 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1630 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1631 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1632 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1633 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1635 struct wpa_scan_results *res = arg;
1636 struct wpa_scan_res **tmp;
1637 struct wpa_scan_res *r;
1641 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1642 genlmsg_attrlen(gnlh, 0), NULL);
1643 if (!tb[NL80211_ATTR_BSS])
1645 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1648 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1649 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1650 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1656 r = os_zalloc(sizeof(*r) + ie_len);
1659 if (bss[NL80211_BSS_BSSID])
1660 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1662 if (bss[NL80211_BSS_FREQUENCY])
1663 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1664 if (bss[NL80211_BSS_BEACON_INTERVAL])
1665 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1666 if (bss[NL80211_BSS_CAPABILITY])
1667 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1668 r->flags |= WPA_SCAN_NOISE_INVALID;
1669 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1670 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1671 r->level /= 100; /* mBm to dBm */
1672 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1673 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1674 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1675 r->flags |= WPA_SCAN_LEVEL_INVALID;
1677 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1678 if (bss[NL80211_BSS_TSF])
1679 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1682 os_memcpy(r + 1, ie, ie_len);
1684 tmp = os_realloc(res->res,
1685 (res->num + 1) * sizeof(struct wpa_scan_res *));
1690 tmp[res->num++] = r;
1698 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1699 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1700 * Returns: Scan results on success, -1 on failure
1702 static struct wpa_scan_results *
1703 wpa_driver_nl80211_get_scan_results(void *priv)
1705 struct wpa_driver_nl80211_data *drv = priv;
1707 struct wpa_scan_results *res;
1710 res = os_zalloc(sizeof(*res));
1713 msg = nlmsg_alloc();
1715 goto nla_put_failure;
1717 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1718 NL80211_CMD_GET_SCAN, 0);
1719 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1721 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1724 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1725 (unsigned long) res->num);
1728 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1729 "(%s)", ret, strerror(-ret));
1732 wpa_scan_results_free(res);
1737 static int wpa_driver_nl80211_get_range(void *priv)
1739 struct wpa_driver_nl80211_data *drv = priv;
1740 struct iw_range *range;
1746 * Use larger buffer than struct iw_range in order to allow the
1747 * structure to grow in the future.
1749 buflen = sizeof(struct iw_range) + 500;
1750 range = os_zalloc(buflen);
1754 os_memset(&iwr, 0, sizeof(iwr));
1755 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1756 iwr.u.data.pointer = (caddr_t) range;
1757 iwr.u.data.length = buflen;
1759 minlen = ((char *) &range->enc_capa) - (char *) range +
1760 sizeof(range->enc_capa);
1762 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1763 perror("ioctl[SIOCGIWRANGE]");
1766 } else if (iwr.u.data.length >= minlen &&
1767 range->we_version_compiled >= 18) {
1768 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1769 "WE(source)=%d enc_capa=0x%x",
1770 range->we_version_compiled,
1771 range->we_version_source,
1773 drv->has_capability = 1;
1774 drv->we_version_compiled = range->we_version_compiled;
1775 if (range->enc_capa & IW_ENC_CAPA_WPA) {
1776 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1777 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1779 if (range->enc_capa & IW_ENC_CAPA_WPA2) {
1780 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1781 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1783 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1784 WPA_DRIVER_CAPA_ENC_WEP104;
1785 if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP)
1786 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1787 if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP)
1788 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1789 wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x",
1790 drv->capa.key_mgmt, drv->capa.enc);
1792 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - "
1793 "assuming WPA is not supported");
1802 static int wpa_driver_nl80211_set_wpa(void *priv, int enabled)
1804 struct wpa_driver_nl80211_data *drv = priv;
1805 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
1807 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1809 return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
1812 #endif /* WEXT_COMPAT */
1815 static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
1816 const u8 *addr, int key_idx,
1817 int set_tx, const u8 *seq,
1819 const u8 *key, size_t key_len)
1821 struct wpa_driver_nl80211_data *drv = priv;
1825 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
1826 "seq_len=%lu key_len=%lu",
1827 __func__, alg, addr, key_idx, set_tx,
1828 (unsigned long) seq_len, (unsigned long) key_len);
1830 msg = nlmsg_alloc();
1834 if (alg == WPA_ALG_NONE) {
1835 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1836 NL80211_CMD_DEL_KEY, 0);
1838 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1839 NL80211_CMD_NEW_KEY, 0);
1840 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1844 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1847 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1851 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
1854 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
1862 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1864 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1865 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1867 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1870 err = send_and_recv_msgs(drv, msg, NULL, NULL);
1872 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d", err);
1876 if (set_tx && alg != WPA_ALG_NONE) {
1877 msg = nlmsg_alloc();
1881 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1882 0, NL80211_CMD_SET_KEY, 0);
1883 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1884 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1885 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1887 err = send_and_recv_msgs(drv, msg, NULL, NULL);
1889 wpa_printf(MSG_DEBUG, "nl80211: set default key "
1890 "failed; err=%d", err);
1903 static int wpa_driver_nl80211_set_countermeasures(void *priv,
1906 struct wpa_driver_nl80211_data *drv = priv;
1907 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
1909 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1910 return wpa_driver_nl80211_set_auth_param(drv,
1911 IW_AUTH_TKIP_COUNTERMEASURES,
1914 #endif /* WEXT_COMPAT */
1917 static int wpa_driver_nl80211_set_drop_unencrypted(void *priv,
1920 struct wpa_driver_nl80211_data *drv = priv;
1921 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1923 drv->use_crypt = enabled;
1924 #endif /* WEXT_COMPAT */
1925 return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
1931 static int wpa_driver_nl80211_mlme_wext(struct wpa_driver_nl80211_data *drv,
1932 const u8 *addr, int cmd,
1936 struct iw_mlme mlme;
1939 os_memset(&iwr, 0, sizeof(iwr));
1940 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1941 os_memset(&mlme, 0, sizeof(mlme));
1943 mlme.reason_code = reason_code;
1944 mlme.addr.sa_family = ARPHRD_ETHER;
1945 os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN);
1946 iwr.u.data.pointer = (caddr_t) &mlme;
1947 iwr.u.data.length = sizeof(mlme);
1949 if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) {
1950 perror("ioctl[SIOCSIWMLME]");
1956 #endif /* WEXT_COMPAT */
1959 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1960 const u8 *addr, int cmd, u16 reason_code)
1965 msg = nlmsg_alloc();
1969 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1971 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1972 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1973 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1975 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1978 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1979 "(%s)", ret, strerror(-ret));
1980 goto nla_put_failure;
1990 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1993 struct wpa_driver_nl80211_data *drv = priv;
1994 wpa_printf(MSG_DEBUG, "%s", __func__);
1996 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1997 return wpa_driver_nl80211_mlme_wext(drv, addr, IW_MLME_DEAUTH,
1999 #endif /* WEXT_COMPAT */
2001 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2006 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2009 struct wpa_driver_nl80211_data *drv = priv;
2010 wpa_printf(MSG_DEBUG, "%s", __func__);
2012 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2013 return wpa_driver_nl80211_mlme_wext(drv, addr,
2016 #endif /* WEXT_COMPAT */
2017 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2023 static int wpa_driver_nl80211_set_gen_ie(void *priv, const u8 *ie,
2026 struct wpa_driver_nl80211_data *drv = priv;
2030 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
2032 os_memset(&iwr, 0, sizeof(iwr));
2033 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2034 iwr.u.data.pointer = (caddr_t) ie;
2035 iwr.u.data.length = ie_len;
2037 if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) {
2038 perror("ioctl[SIOCSIWGENIE]");
2046 static int wpa_driver_nl80211_cipher2wext(int cipher)
2050 return IW_AUTH_CIPHER_NONE;
2052 return IW_AUTH_CIPHER_WEP40;
2054 return IW_AUTH_CIPHER_TKIP;
2056 return IW_AUTH_CIPHER_CCMP;
2058 return IW_AUTH_CIPHER_WEP104;
2065 static int wpa_driver_nl80211_keymgmt2wext(int keymgmt)
2068 case KEY_MGMT_802_1X:
2069 case KEY_MGMT_802_1X_NO_WPA:
2070 return IW_AUTH_KEY_MGMT_802_1X;
2072 return IW_AUTH_KEY_MGMT_PSK;
2080 wpa_driver_nl80211_auth_alg_fallback(struct wpa_driver_nl80211_data *drv,
2081 struct wpa_driver_associate_params *params)
2086 wpa_printf(MSG_DEBUG, "WEXT: Driver did not support "
2087 "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE");
2089 os_memset(&iwr, 0, sizeof(iwr));
2090 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2091 /* Just changing mode, not actual keys */
2092 iwr.u.encoding.flags = 0;
2093 iwr.u.encoding.pointer = (caddr_t) NULL;
2094 iwr.u.encoding.length = 0;
2097 * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two
2098 * different things. Here they are used to indicate Open System vs.
2099 * Shared Key authentication algorithm. However, some drivers may use
2100 * them to select between open/restricted WEP encrypted (open = allow
2101 * both unencrypted and encrypted frames; restricted = only allow
2102 * encrypted frames).
2105 if (!drv->use_crypt) {
2106 iwr.u.encoding.flags |= IW_ENCODE_DISABLED;
2108 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2109 iwr.u.encoding.flags |= IW_ENCODE_OPEN;
2110 if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2111 iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED;
2114 if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) {
2115 perror("ioctl[SIOCSIWENCODE]");
2123 static int wpa_driver_nl80211_associate_wext(
2124 void *priv, struct wpa_driver_associate_params *params)
2126 struct wpa_driver_nl80211_data *drv = priv;
2128 int allow_unencrypted_eapol;
2131 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
2134 * If the driver did not support SIOCSIWAUTH, fallback to
2135 * SIOCSIWENCODE here.
2137 if (drv->auth_alg_fallback &&
2138 wpa_driver_nl80211_auth_alg_fallback(drv, params) < 0)
2141 if (!params->bssid &&
2142 wpa_driver_nl80211_set_bssid(drv, NULL) < 0)
2145 /* TODO: should consider getting wpa version and cipher/key_mgmt suites
2146 * from configuration, not from here, where only the selected suite is
2148 if (wpa_driver_nl80211_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len)
2151 if (params->wpa_ie == NULL || params->wpa_ie_len == 0)
2152 value = IW_AUTH_WPA_VERSION_DISABLED;
2153 else if (params->wpa_ie[0] == WLAN_EID_RSN)
2154 value = IW_AUTH_WPA_VERSION_WPA2;
2156 value = IW_AUTH_WPA_VERSION_WPA;
2157 if (wpa_driver_nl80211_set_auth_param(drv,
2158 IW_AUTH_WPA_VERSION, value) < 0)
2160 value = wpa_driver_nl80211_cipher2wext(params->pairwise_suite);
2161 if (wpa_driver_nl80211_set_auth_param(drv,
2162 IW_AUTH_CIPHER_PAIRWISE, value) < 0)
2164 value = wpa_driver_nl80211_cipher2wext(params->group_suite);
2165 if (wpa_driver_nl80211_set_auth_param(drv,
2166 IW_AUTH_CIPHER_GROUP, value) < 0)
2168 value = wpa_driver_nl80211_keymgmt2wext(params->key_mgmt_suite);
2169 if (wpa_driver_nl80211_set_auth_param(drv,
2170 IW_AUTH_KEY_MGMT, value) < 0)
2172 value = params->key_mgmt_suite != KEY_MGMT_NONE ||
2173 params->pairwise_suite != CIPHER_NONE ||
2174 params->group_suite != CIPHER_NONE ||
2176 if (wpa_driver_nl80211_set_auth_param(drv,
2177 IW_AUTH_PRIVACY_INVOKED, value) < 0)
2180 /* Allow unencrypted EAPOL messages even if pairwise keys are set when
2181 * not using WPA. IEEE 802.1X specifies that these frames are not
2182 * encrypted, but WPA encrypts them when pairwise keys are in use. */
2183 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
2184 params->key_mgmt_suite == KEY_MGMT_PSK)
2185 allow_unencrypted_eapol = 0;
2187 allow_unencrypted_eapol = 1;
2189 if (wpa_driver_nl80211_set_auth_param(drv,
2190 IW_AUTH_RX_UNENCRYPTED_EAPOL,
2191 allow_unencrypted_eapol) < 0)
2193 if (params->freq && wpa_driver_nl80211_set_freq(drv, params->freq) < 0)
2195 if (wpa_driver_nl80211_set_ssid(drv, params->ssid, params->ssid_len) < 0)
2197 if (params->bssid &&
2198 wpa_driver_nl80211_set_bssid(drv, params->bssid) < 0)
2205 static int wpa_driver_nl80211_set_auth_alg(void *priv, int auth_alg)
2207 struct wpa_driver_nl80211_data *drv = priv;
2210 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
2213 if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
2214 algs |= IW_AUTH_ALG_OPEN_SYSTEM;
2215 if (auth_alg & AUTH_ALG_SHARED_KEY)
2216 algs |= IW_AUTH_ALG_SHARED_KEY;
2217 if (auth_alg & AUTH_ALG_LEAP)
2218 algs |= IW_AUTH_ALG_LEAP;
2220 /* at least one algorithm should be set */
2221 algs = IW_AUTH_ALG_OPEN_SYSTEM;
2224 res = wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG,
2226 drv->auth_alg_fallback = res == -2;
2229 #endif /* WEXT_COMPAT */
2232 static int wpa_driver_nl80211_authenticate(
2233 void *priv, struct wpa_driver_auth_params *params)
2235 struct wpa_driver_nl80211_data *drv = priv;
2238 enum nl80211_auth_type type;
2240 drv->associated = 0;
2242 msg = nlmsg_alloc();
2246 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2248 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2249 NL80211_CMD_AUTHENTICATE, 0);
2251 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2252 if (params->bssid) {
2253 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2254 MAC2STR(params->bssid));
2255 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2258 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2259 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2262 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2263 params->ssid, params->ssid_len);
2264 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2267 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2269 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2271 * TODO: if multiple auth_alg options enabled, try them one by one if
2272 * the AP rejects authentication due to unknown auth alg
2274 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2275 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2276 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2277 type = NL80211_AUTHTYPE_SHARED_KEY;
2278 else if (params->auth_alg & AUTH_ALG_LEAP)
2279 type = NL80211_AUTHTYPE_NETWORK_EAP;
2280 else if (params->auth_alg & AUTH_ALG_FT)
2281 type = NL80211_AUTHTYPE_FT;
2283 goto nla_put_failure;
2284 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2285 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2287 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2290 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2291 "(%s)", ret, strerror(-ret));
2292 goto nla_put_failure;
2295 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2304 static int wpa_driver_nl80211_associate(
2305 void *priv, struct wpa_driver_associate_params *params)
2307 struct wpa_driver_nl80211_data *drv = priv;
2312 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2313 return wpa_driver_nl80211_associate_wext(drv, params);
2314 #endif /* WEXT_COMPAT */
2316 drv->associated = 0;
2318 msg = nlmsg_alloc();
2322 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
2324 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2325 NL80211_CMD_ASSOCIATE, 0);
2327 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2328 if (params->bssid) {
2329 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2330 MAC2STR(params->bssid));
2331 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2334 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2335 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2338 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2339 params->ssid, params->ssid_len);
2340 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2343 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
2345 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
2348 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2351 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2352 "(%s)", ret, strerror(-ret));
2353 goto nla_put_failure;
2356 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
2366 * wpa_driver_nl80211_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE
2367 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2368 * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
2369 * Returns: 0 on success, -1 on failure
2371 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
2373 struct wpa_driver_nl80211_data *drv = priv;
2374 int ret = -1, flags;
2377 msg = nlmsg_alloc();
2381 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2382 0, NL80211_CMD_SET_INTERFACE, 0);
2383 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2384 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE,
2385 mode ? NL80211_IFTYPE_ADHOC : NL80211_IFTYPE_STATION);
2387 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2394 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface mode");
2398 /* mac80211 doesn't allow mode changes while the device is up, so
2399 * take the device down, try to set the mode again, and bring the
2402 if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) {
2403 (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
2405 /* Try to set the mode again while the interface is down */
2406 msg = nlmsg_alloc();
2410 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2411 0, NL80211_CMD_SET_INTERFACE, 0);
2412 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2413 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE,
2414 mode ? NL80211_IFTYPE_ADHOC :
2415 NL80211_IFTYPE_STATION);
2416 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2418 wpa_printf(MSG_ERROR, "Failed to set interface %s "
2419 "mode", drv->ifname);
2422 /* Ignore return value of get_ifflags to ensure that the device
2423 * is always up like it was before this function was called.
2425 (void) wpa_driver_nl80211_get_ifflags(drv, &flags);
2426 (void) wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP);
2433 static int wpa_driver_nl80211_pmksa(struct wpa_driver_nl80211_data *drv,
2434 u32 cmd, const u8 *bssid, const u8 *pmkid)
2437 struct iw_pmksa pmksa;
2440 os_memset(&iwr, 0, sizeof(iwr));
2441 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
2442 os_memset(&pmksa, 0, sizeof(pmksa));
2444 pmksa.bssid.sa_family = ARPHRD_ETHER;
2446 os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN);
2448 os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN);
2449 iwr.u.data.pointer = (caddr_t) &pmksa;
2450 iwr.u.data.length = sizeof(pmksa);
2452 if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) {
2453 if (errno != EOPNOTSUPP)
2454 perror("ioctl[SIOCSIWPMKSA]");
2462 static int wpa_driver_nl80211_add_pmkid(void *priv, const u8 *bssid,
2465 struct wpa_driver_nl80211_data *drv = priv;
2466 return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid);
2470 static int wpa_driver_nl80211_remove_pmkid(void *priv, const u8 *bssid,
2473 struct wpa_driver_nl80211_data *drv = priv;
2474 return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid);
2478 static int wpa_driver_nl80211_flush_pmkid(void *priv)
2480 struct wpa_driver_nl80211_data *drv = priv;
2481 return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL);
2485 static int wpa_driver_nl80211_get_capa(void *priv,
2486 struct wpa_driver_capa *capa)
2488 struct wpa_driver_nl80211_data *drv = priv;
2489 if (!drv->has_capability)
2491 os_memcpy(capa, &drv->capa, sizeof(*capa));
2496 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
2498 struct wpa_driver_nl80211_data *drv = priv;
2500 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
2501 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
2502 drv->operstate = state;
2503 return wpa_driver_nl80211_send_oper_ifla(
2504 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
2508 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2510 .desc = "Linux nl80211/cfg80211",
2511 .get_bssid = wpa_driver_nl80211_get_bssid,
2512 .get_ssid = wpa_driver_nl80211_get_ssid,
2513 .set_key = wpa_driver_nl80211_set_key,
2514 .set_drop_unencrypted = wpa_driver_nl80211_set_drop_unencrypted,
2515 .scan2 = wpa_driver_nl80211_scan,
2516 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
2517 .deauthenticate = wpa_driver_nl80211_deauthenticate,
2518 .disassociate = wpa_driver_nl80211_disassociate,
2519 .set_mode = wpa_driver_nl80211_set_mode,
2520 .authenticate = wpa_driver_nl80211_authenticate,
2521 .associate = wpa_driver_nl80211_associate,
2522 .init = wpa_driver_nl80211_init,
2523 .deinit = wpa_driver_nl80211_deinit,
2524 .add_pmkid = wpa_driver_nl80211_add_pmkid,
2525 .remove_pmkid = wpa_driver_nl80211_remove_pmkid,
2526 .flush_pmkid = wpa_driver_nl80211_flush_pmkid,
2527 .get_capa = wpa_driver_nl80211_get_capa,
2528 .set_operstate = wpa_driver_nl80211_set_operstate,
2529 .set_country = wpa_driver_nl80211_set_country,
2531 .set_wpa = wpa_driver_nl80211_set_wpa,
2532 .set_countermeasures = wpa_driver_nl80211_set_countermeasures,
2533 .set_auth_alg = wpa_driver_nl80211_set_auth_alg,
2534 #endif /* WEXT_COMPAT */