2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009, Atheros Communications
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * Alternatively, this software may be distributed under the terms of BSD
16 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
21 #include <net/if_arp.h>
23 #include <netlink/genl/genl.h>
24 #include <netlink/genl/family.h>
25 #include <netlink/genl/ctrl.h>
26 #include "nl80211_copy.h"
28 #include "wireless_copy.h"
34 #include "ieee802_11_defs.h"
36 #if defined(CONFIG_AP) || defined(HOSTAPD)
37 #include <netpacket/packet.h>
38 #include <linux/filter.h>
40 #include "radiotap_iter.h"
41 #endif /* CONFIG_AP || HOSTAPD */
45 #include "../hostapd/hostapd_defs.h"
48 #define ETH_P_ALL 0x0003
51 #endif /* CONFIG_AP */
54 #include "../../hostapd/hostapd.h"
55 #include "../../hostapd/sta_flags.h"
56 #include "ieee802_11_common.h"
59 /* libnl 2.0 compatibility code */
60 #define nl_handle_alloc_cb nl_socket_alloc_cb
61 #define nl_handle_destroy nl_socket_free
62 #endif /* CONFIG_LIBNL20 */
68 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
71 #define IFF_DORMANT 0x20000 /* driver signals dormant */
74 #ifndef IF_OPER_DORMANT
75 #define IF_OPER_DORMANT 5
81 enum ieee80211_msg_type {
82 ieee80211_msg_normal = 0,
83 ieee80211_msg_tx_callback_ack = 1,
84 ieee80211_msg_tx_callback_fail = 2,
88 struct i802_bss *next;
90 unsigned int beacon_set:1;
93 struct wpa_driver_nl80211_data {
96 int ioctl_sock; /* socket for ioctl() use */
97 char ifname[IFNAMSIZ + 1];
100 struct wpa_driver_capa capa;
105 int scan_complete_events;
107 struct nl_handle *nl_handle;
108 struct nl_cache *nl_cache;
110 struct genl_family *nl80211;
117 int ap_scan_as_station;
124 unsigned int beacon_set:1;
125 #endif /* CONFIG_AP */
128 struct hostapd_data *hapd;
130 int eapol_sock; /* socket for EAPOL frames */
132 int default_if_indices[16];
144 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
146 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
148 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
151 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
153 #endif /* CONFIG_AP */
156 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
157 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
158 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
160 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
162 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
163 static int i802_del_beacon(struct wpa_driver_nl80211_data *drv);
168 static int ack_handler(struct nl_msg *msg, void *arg)
175 static int finish_handler(struct nl_msg *msg, void *arg)
182 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
191 static int no_seq_check(struct nl_msg *msg, void *arg)
197 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
199 int (*valid_handler)(struct nl_msg *, void *),
205 cb = nl_cb_clone(drv->nl_cb);
209 err = nl_send_auto_complete(drv->nl_handle, msg);
215 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
216 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
217 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
220 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
221 valid_handler, valid_data);
224 nl_recvmsgs(drv->nl_handle, cb);
238 static int family_handler(struct nl_msg *msg, void *arg)
240 struct family_data *res = arg;
241 struct nlattr *tb[CTRL_ATTR_MAX + 1];
242 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
243 struct nlattr *mcgrp;
246 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
247 genlmsg_attrlen(gnlh, 0), NULL);
248 if (!tb[CTRL_ATTR_MCAST_GROUPS])
251 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
252 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
253 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
254 nla_len(mcgrp), NULL);
255 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
256 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
257 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
259 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
261 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
269 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
270 const char *family, const char *group)
274 struct family_data res = { group, -ENOENT };
279 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
280 0, 0, CTRL_CMD_GETFAMILY, 0);
281 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
283 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
295 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
296 const char *ifname, u8 *addr)
300 os_memset(&ifr, 0, sizeof(ifr));
301 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
302 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
303 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
304 ifname, errno, strerror(errno));
308 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
309 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
310 ifname, ifr.ifr_hwaddr.sa_family);
313 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
319 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
320 const char *ifname, const u8 *addr)
324 os_memset(&ifr, 0, sizeof(ifr));
325 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
326 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
327 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
329 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
330 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
331 ifname, errno, strerror(errno));
340 static int wpa_driver_nl80211_send_oper_ifla(
341 struct wpa_driver_nl80211_data *drv,
342 int linkmode, int operstate)
346 struct ifinfomsg ifinfo;
353 os_memset(&req, 0, sizeof(req));
355 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
356 req.hdr.nlmsg_type = RTM_SETLINK;
357 req.hdr.nlmsg_flags = NLM_F_REQUEST;
358 req.hdr.nlmsg_seq = ++nl_seq;
359 req.hdr.nlmsg_pid = 0;
361 req.ifinfo.ifi_family = AF_UNSPEC;
362 req.ifinfo.ifi_type = 0;
363 req.ifinfo.ifi_index = drv->ifindex;
364 req.ifinfo.ifi_flags = 0;
365 req.ifinfo.ifi_change = 0;
367 if (linkmode != -1) {
368 rta = (struct rtattr *)
369 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
370 rta->rta_type = IFLA_LINKMODE;
371 rta->rta_len = RTA_LENGTH(sizeof(char));
372 *((char *) RTA_DATA(rta)) = linkmode;
373 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
374 RTA_LENGTH(sizeof(char));
376 if (operstate != -1) {
377 rta = (struct rtattr *)
378 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
379 rta->rta_type = IFLA_OPERSTATE;
380 rta->rta_len = RTA_LENGTH(sizeof(char));
381 *((char *) RTA_DATA(rta)) = operstate;
382 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
383 RTA_LENGTH(sizeof(char));
386 wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
387 linkmode, operstate);
389 ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
391 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
392 " %s (assume operstate is not supported)",
396 return ret < 0 ? -1 : 0;
401 static int wpa_driver_nl80211_set_auth_param(
402 struct wpa_driver_nl80211_data *drv, int idx, u32 value)
407 os_memset(&iwr, 0, sizeof(iwr));
408 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
409 iwr.u.param.flags = idx & IW_AUTH_INDEX;
410 iwr.u.param.value = value;
412 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
413 if (errno != EOPNOTSUPP) {
414 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
415 "value 0x%x) failed: %s)",
416 idx, value, strerror(errno));
418 ret = errno == EOPNOTSUPP ? -2 : -1;
426 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
428 struct wpa_driver_nl80211_data *drv = priv;
429 if (!drv->associated)
431 os_memcpy(bssid, drv->bssid, ETH_ALEN);
436 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
438 struct wpa_driver_nl80211_data *drv = priv;
439 if (!drv->associated)
441 os_memcpy(ssid, drv->ssid, drv->ssid_len);
442 return drv->ssid_len;
447 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
448 void *ctx, char *buf, size_t len,
451 union wpa_event_data event;
453 os_memset(&event, 0, sizeof(event));
454 if (len > sizeof(event.interface_status.ifname))
455 len = sizeof(event.interface_status.ifname) - 1;
456 os_memcpy(event.interface_status.ifname, buf, len);
457 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
458 EVENT_INTERFACE_ADDED;
460 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
462 event.interface_status.ifname,
463 del ? "removed" : "added");
465 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
472 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
476 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
479 struct ifinfomsg *ifi;
480 int attrlen, _nlmsg_len, rta_len;
485 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
487 attrlen = h->nlmsg_len - _nlmsg_len;
491 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
493 rta_len = RTA_ALIGN(sizeof(struct rtattr));
494 while (RTA_OK(attr, attrlen)) {
495 if (attr->rta_type == IFLA_IFNAME) {
496 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
502 attr = RTA_NEXT(attr, attrlen);
509 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
510 int ifindex, struct nlmsghdr *h)
512 if (drv->ifindex == ifindex)
515 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
516 drv->ifindex = if_nametoindex(drv->ifname);
517 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
519 wpa_driver_nl80211_finish_drv_init(drv);
527 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
528 void *ctx, struct nlmsghdr *h,
531 struct ifinfomsg *ifi;
532 int attrlen, _nlmsg_len, rta_len;
533 struct rtattr * attr;
535 if (len < sizeof(*ifi))
540 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
541 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
546 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
548 drv->operstate, ifi->ifi_flags,
549 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
550 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
551 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
552 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
554 * Some drivers send the association event before the operup event--in
555 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
556 * fails. This will hit us when wpa_supplicant does not need to do
557 * IEEE 802.1X authentication
559 if (drv->operstate == 1 &&
560 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
561 !(ifi->ifi_flags & IFF_RUNNING))
562 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
564 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
566 attrlen = h->nlmsg_len - _nlmsg_len;
570 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
572 rta_len = RTA_ALIGN(sizeof(struct rtattr));
573 while (RTA_OK(attr, attrlen)) {
574 if (attr->rta_type == IFLA_IFNAME) {
575 wpa_driver_nl80211_event_link(
577 ((char *) attr) + rta_len,
578 attr->rta_len - rta_len, 0);
580 attr = RTA_NEXT(attr, attrlen);
585 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
586 void *ctx, struct nlmsghdr *h,
589 struct ifinfomsg *ifi;
590 int attrlen, _nlmsg_len, rta_len;
591 struct rtattr * attr;
593 if (len < sizeof(*ifi))
598 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
600 attrlen = h->nlmsg_len - _nlmsg_len;
604 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
606 rta_len = RTA_ALIGN(sizeof(struct rtattr));
607 while (RTA_OK(attr, attrlen)) {
608 if (attr->rta_type == IFLA_IFNAME) {
609 wpa_driver_nl80211_event_link(
611 ((char *) attr) + rta_len,
612 attr->rta_len - rta_len, 1);
614 attr = RTA_NEXT(attr, attrlen);
619 static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
624 struct sockaddr_nl from;
630 fromlen = sizeof(from);
631 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
632 (struct sockaddr *) &from, &fromlen);
634 if (errno != EINTR && errno != EAGAIN)
635 perror("recvfrom(netlink)");
639 h = (struct nlmsghdr *) buf;
640 while (left >= (int) sizeof(*h)) {
644 plen = len - sizeof(*h);
645 if (len > left || plen < 0) {
646 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
647 "len=%d left=%d plen=%d",
652 switch (h->nlmsg_type) {
654 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
658 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
663 len = NLMSG_ALIGN(len);
665 h = (struct nlmsghdr *) ((char *) h + len);
669 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
673 if (--max_events > 0) {
675 * Try to receive all events in one eloop call in order to
676 * limit race condition on cases where AssocInfo event, Assoc
677 * event, and EAPOL frames are received more or less at the
678 * same time. We want to process the event messages first
679 * before starting EAPOL processing.
686 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
687 const u8 *frame, size_t len)
689 const struct ieee80211_mgmt *mgmt;
690 union wpa_event_data event;
692 mgmt = (const struct ieee80211_mgmt *) frame;
693 if (len < 24 + sizeof(mgmt->u.auth)) {
694 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
699 os_memset(&event, 0, sizeof(event));
700 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
701 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
702 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
703 if (len > 24 + sizeof(mgmt->u.auth)) {
704 event.auth.ies = mgmt->u.auth.variable;
705 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
708 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
712 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
713 const u8 *frame, size_t len)
715 const struct ieee80211_mgmt *mgmt;
716 union wpa_event_data event;
719 mgmt = (const struct ieee80211_mgmt *) frame;
720 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
721 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
726 status = le_to_host16(mgmt->u.assoc_resp.status_code);
727 if (status != WLAN_STATUS_SUCCESS) {
728 os_memset(&event, 0, sizeof(event));
729 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
730 event.assoc_reject.resp_ies =
731 (u8 *) mgmt->u.assoc_resp.variable;
732 event.assoc_reject.resp_ies_len =
733 len - 24 - sizeof(mgmt->u.assoc_resp);
735 event.assoc_reject.status_code = status;
737 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
742 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
744 os_memset(&event, 0, sizeof(event));
745 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
746 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
747 event.assoc_info.resp_ies_len =
748 len - 24 - sizeof(mgmt->u.assoc_resp);
751 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
755 static void mlme_event(struct wpa_driver_nl80211_data *drv,
756 enum nl80211_commands cmd, struct nlattr *frame)
759 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
764 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
765 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
766 nla_data(frame), nla_len(frame));
769 case NL80211_CMD_AUTHENTICATE:
770 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
772 case NL80211_CMD_ASSOCIATE:
773 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
775 case NL80211_CMD_DEAUTHENTICATE:
777 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
779 case NL80211_CMD_DISASSOCIATE:
781 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
791 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
794 union wpa_event_data data;
796 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
797 os_memset(&data, 0, sizeof(data));
798 if (tb[NL80211_ATTR_MAC]) {
799 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
800 nla_data(tb[NL80211_ATTR_MAC]),
801 nla_len(tb[NL80211_ATTR_MAC]));
802 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
804 if (tb[NL80211_ATTR_KEY_SEQ]) {
805 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
806 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
807 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
809 if (tb[NL80211_ATTR_KEY_TYPE]) {
810 enum nl80211_key_type key_type =
811 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
812 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
813 if (key_type == NL80211_KEYTYPE_PAIRWISE)
814 data.michael_mic_failure.unicast = 1;
816 data.michael_mic_failure.unicast = 1;
818 if (tb[NL80211_ATTR_KEY_IDX]) {
819 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
820 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
823 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
827 static int process_event(struct nl_msg *msg, void *arg)
829 struct wpa_driver_nl80211_data *drv = arg;
830 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
831 struct nlattr *tb[NL80211_ATTR_MAX + 1];
833 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
834 genlmsg_attrlen(gnlh, 0), NULL);
836 if (tb[NL80211_ATTR_IFINDEX]) {
837 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
838 if (ifindex != drv->ifindex) {
839 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
840 " for foreign interface (ifindex %d)",
846 if (drv->ap_scan_as_station &&
847 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
848 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
849 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
850 drv->ap_scan_as_station = 0;
854 case NL80211_CMD_NEW_SCAN_RESULTS:
855 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
856 drv->scan_complete_events = 1;
857 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
859 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
861 case NL80211_CMD_SCAN_ABORTED:
862 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
864 * Need to indicate that scan results are available in order
865 * not to make wpa_supplicant stop its scanning.
867 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
869 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
872 case NL80211_CMD_AUTHENTICATE:
873 case NL80211_CMD_ASSOCIATE:
874 case NL80211_CMD_DEAUTHENTICATE:
875 case NL80211_CMD_DISASSOCIATE:
876 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]);
879 case NL80211_CMD_MICHAEL_MIC_FAILURE:
880 mlme_event_michael_mic_failure(drv, tb);
883 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
884 "(cmd=%d)", gnlh->cmd);
892 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
896 struct wpa_driver_nl80211_data *drv = eloop_ctx;
898 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
900 cb = nl_cb_clone(drv->nl_cb);
903 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
904 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
905 nl_recvmsgs(drv->nl_handle, cb);
910 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
911 const char *ifname, int dev_up)
915 if (drv->ioctl_sock < 0)
918 os_memset(&ifr, 0, sizeof(ifr));
919 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
921 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
922 perror("ioctl[SIOCGIFFLAGS]");
923 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
929 if (ifr.ifr_flags & IFF_UP)
931 ifr.ifr_flags |= IFF_UP;
933 if (!(ifr.ifr_flags & IFF_UP))
935 ifr.ifr_flags &= ~IFF_UP;
938 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
939 perror("ioctl[SIOCSIFFLAGS]");
948 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
949 * @priv: driver_nl80211 private data
950 * @alpha2_arg: country to which to switch to
951 * Returns: 0 on success, -1 on failure
953 * This asks nl80211 to set the regulatory domain for given
954 * country ISO / IEC alpha2.
956 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
958 struct wpa_driver_nl80211_data *drv = priv;
966 alpha2[0] = alpha2_arg[0];
967 alpha2[1] = alpha2_arg[1];
970 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
971 0, NL80211_CMD_REQ_SET_REG, 0);
973 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
974 if (send_and_recv_msgs(drv, msg, NULL, NULL))
983 struct wiphy_info_data {
989 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
991 struct nlattr *tb[NL80211_ATTR_MAX + 1];
992 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
993 struct wiphy_info_data *info = arg;
995 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
996 genlmsg_attrlen(gnlh, 0), NULL);
998 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
999 info->max_scan_ssids =
1000 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1002 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1003 struct nlattr *nl_mode;
1005 nla_for_each_nested(nl_mode,
1006 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1007 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1008 info->ap_supported = 1;
1018 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1019 struct wiphy_info_data *info)
1023 os_memset(info, 0, sizeof(*info));
1024 msg = nlmsg_alloc();
1028 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1029 0, NL80211_CMD_GET_WIPHY, 0);
1031 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1033 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1042 static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1044 struct wiphy_info_data info;
1045 if (wpa_driver_nl80211_get_info(drv, &info))
1047 drv->has_capability = 1;
1048 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1049 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1050 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1051 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1052 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1053 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1054 WPA_DRIVER_CAPA_ENC_WEP104 |
1055 WPA_DRIVER_CAPA_ENC_TKIP |
1056 WPA_DRIVER_CAPA_ENC_CCMP;
1058 drv->capa.max_scan_ssids = info.max_scan_ssids;
1059 if (info.ap_supported)
1060 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1062 #endif /* HOSTAPD */
1065 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1070 /* Initialize generic netlink and nl80211 */
1072 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1073 if (drv->nl_cb == NULL) {
1074 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1079 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1080 if (drv->nl_handle == NULL) {
1081 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1086 if (genl_connect(drv->nl_handle)) {
1087 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1092 #ifdef CONFIG_LIBNL20
1093 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1094 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1098 #else /* CONFIG_LIBNL20 */
1099 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1100 if (drv->nl_cache == NULL) {
1101 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1105 #endif /* CONFIG_LIBNL20 */
1108 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1109 if (drv->nl80211 == NULL) {
1110 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1115 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1117 ret = nl_socket_add_membership(drv->nl_handle, ret);
1119 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1120 "membership for scan events: %d (%s)",
1121 ret, strerror(-ret));
1125 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1127 ret = nl_socket_add_membership(drv->nl_handle, ret);
1129 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1130 "membership for mlme events: %d (%s)",
1131 ret, strerror(-ret));
1135 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
1136 wpa_driver_nl80211_event_receive, drv, ctx);
1141 nl_cache_free(drv->nl_cache);
1143 nl_handle_destroy(drv->nl_handle);
1145 nl_cb_put(drv->nl_cb);
1151 static int wpa_driver_nl80211_init_link_events(
1152 struct wpa_driver_nl80211_data *drv)
1158 struct sockaddr_nl local;
1160 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1162 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1166 os_memset(&local, 0, sizeof(local));
1167 local.nl_family = AF_NETLINK;
1168 local.nl_groups = RTMGRP_LINK;
1169 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1170 perror("bind(netlink)");
1175 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
1177 drv->link_event_sock = s;
1180 #endif /* HOSTAPD */
1185 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1186 * @ctx: context to be used when calling wpa_supplicant functions,
1187 * e.g., wpa_supplicant_event()
1188 * @ifname: interface name, e.g., wlan0
1189 * Returns: Pointer to private data, %NULL on failure
1191 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1193 struct wpa_driver_nl80211_data *drv;
1195 drv = os_zalloc(sizeof(*drv));
1199 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1200 drv->monitor_ifidx = -1;
1201 drv->monitor_sock = -1;
1202 drv->link_event_sock = -1;
1203 drv->ioctl_sock = -1;
1205 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1210 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1212 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1213 if (drv->ioctl_sock < 0) {
1214 perror("socket(PF_INET,SOCK_DGRAM)");
1218 if (wpa_driver_nl80211_init_link_events(drv) ||
1219 wpa_driver_nl80211_finish_drv_init(drv))
1225 if (drv->link_event_sock >= 0) {
1226 eloop_unregister_read_sock(drv->link_event_sock);
1227 close(drv->link_event_sock);
1229 if (drv->ioctl_sock >= 0)
1230 close(drv->ioctl_sock);
1232 genl_family_put(drv->nl80211);
1233 nl_cache_free(drv->nl_cache);
1234 nl_handle_destroy(drv->nl_handle);
1235 nl_cb_put(drv->nl_cb);
1243 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1245 drv->ifindex = if_nametoindex(drv->ifname);
1248 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1249 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1250 "use managed mode");
1253 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1254 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1259 wpa_driver_nl80211_capa(drv);
1261 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1262 #endif /* HOSTAPD */
1269 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1271 struct i802_bss *bss, *prev;
1272 bss = drv->bss.next;
1279 #endif /* HOSTAPD */
1283 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1284 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1286 * Shut down driver interface and processing of driver events. Free
1287 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1289 static void wpa_driver_nl80211_deinit(void *priv)
1291 struct wpa_driver_nl80211_data *drv = priv;
1293 #if defined(CONFIG_AP) || defined(HOSTAPD)
1294 if (drv->monitor_ifidx >= 0)
1295 nl80211_remove_iface(drv, drv->monitor_ifidx);
1296 if (drv->monitor_sock >= 0) {
1297 eloop_unregister_read_sock(drv->monitor_sock);
1298 close(drv->monitor_sock);
1300 #endif /* CONFIG_AP || HOSTAPD */
1303 if (drv->last_freq_ht) {
1304 /* Clear HT flags from the driver */
1305 struct hostapd_freq_params freq;
1306 os_memset(&freq, 0, sizeof(freq));
1307 freq.freq = drv->last_freq;
1308 i802_set_freq(priv, &freq);
1311 i802_del_beacon(drv);
1313 if (drv->eapol_sock >= 0) {
1314 eloop_unregister_read_sock(drv->eapol_sock);
1315 close(drv->eapol_sock);
1318 if (drv->if_indices != drv->default_if_indices)
1319 os_free(drv->if_indices);
1321 wpa_driver_nl80211_free_bss(drv);
1324 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, 0);
1325 #endif /* NO_WEXT */
1327 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1329 if (drv->link_event_sock >= 0) {
1330 eloop_unregister_read_sock(drv->link_event_sock);
1331 close(drv->link_event_sock);
1333 #endif /* HOSTAPD */
1335 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1337 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1338 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1340 if (drv->ioctl_sock >= 0)
1341 close(drv->ioctl_sock);
1343 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
1344 genl_family_put(drv->nl80211);
1345 nl_cache_free(drv->nl_cache);
1346 nl_handle_destroy(drv->nl_handle);
1347 nl_cb_put(drv->nl_cb);
1354 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1355 * @eloop_ctx: Driver private data
1356 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1358 * This function can be used as registered timeout when starting a scan to
1359 * generate a scan completed event if the driver does not report this.
1361 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1363 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1364 if (drv->ap_scan_as_station) {
1365 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1366 drv->ap_scan_as_station = 0;
1368 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1369 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1374 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1375 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1376 * @params: Scan parameters
1377 * Returns: 0 on success, -1 on failure
1379 static int wpa_driver_nl80211_scan(void *priv,
1380 struct wpa_driver_scan_params *params)
1382 struct wpa_driver_nl80211_data *drv = priv;
1383 int ret = 0, timeout;
1384 struct nl_msg *msg, *ssids, *freqs;
1387 msg = nlmsg_alloc();
1388 ssids = nlmsg_alloc();
1389 freqs = nlmsg_alloc();
1390 if (!msg || !ssids || !freqs) {
1397 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1398 NL80211_CMD_TRIGGER_SCAN, 0);
1400 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1402 for (i = 0; i < params->num_ssids; i++) {
1403 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1404 params->ssids[i].ssid);
1406 if (params->num_ssids)
1407 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1409 if (params->extra_ies) {
1410 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1414 if (params->freqs) {
1415 for (i = 0; params->freqs[i]; i++)
1416 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1417 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1420 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1423 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1424 "(%s)", ret, strerror(-ret));
1426 if (drv->nlmode == NL80211_IFTYPE_AP) {
1428 * mac80211 does not allow scan requests in AP mode, so
1429 * try to do this in station mode.
1431 if (wpa_driver_nl80211_set_mode(drv,
1432 IEEE80211_MODE_INFRA))
1433 goto nla_put_failure;
1435 if (wpa_driver_nl80211_scan(drv, params)) {
1436 wpa_driver_nl80211_set_mode(drv,
1438 goto nla_put_failure;
1441 /* Restore AP mode when processing scan results */
1442 drv->ap_scan_as_station = 1;
1445 goto nla_put_failure;
1447 goto nla_put_failure;
1448 #endif /* HOSTAPD */
1451 /* Not all drivers generate "scan completed" wireless event, so try to
1452 * read results after a timeout. */
1454 if (drv->scan_complete_events) {
1456 * The driver seems to deliver events to notify when scan is
1457 * complete, so use longer timeout to avoid race conditions
1458 * with scanning and following association request.
1462 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1463 "seconds", ret, timeout);
1464 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1465 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1476 static int bss_info_handler(struct nl_msg *msg, void *arg)
1478 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1479 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1480 struct nlattr *bss[NL80211_BSS_MAX + 1];
1481 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1482 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1483 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1484 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1485 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1486 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1487 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1488 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1489 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1491 struct wpa_scan_results *res = arg;
1492 struct wpa_scan_res **tmp;
1493 struct wpa_scan_res *r;
1497 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1498 genlmsg_attrlen(gnlh, 0), NULL);
1499 if (!tb[NL80211_ATTR_BSS])
1501 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1504 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1505 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1506 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1512 r = os_zalloc(sizeof(*r) + ie_len);
1515 if (bss[NL80211_BSS_BSSID])
1516 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1518 if (bss[NL80211_BSS_FREQUENCY])
1519 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1520 if (bss[NL80211_BSS_BEACON_INTERVAL])
1521 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1522 if (bss[NL80211_BSS_CAPABILITY])
1523 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1524 r->flags |= WPA_SCAN_NOISE_INVALID;
1525 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1526 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1527 r->level /= 100; /* mBm to dBm */
1528 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1529 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1530 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1531 r->flags |= WPA_SCAN_LEVEL_INVALID;
1533 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1534 if (bss[NL80211_BSS_TSF])
1535 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1538 os_memcpy(r + 1, ie, ie_len);
1540 tmp = os_realloc(res->res,
1541 (res->num + 1) * sizeof(struct wpa_scan_res *));
1546 tmp[res->num++] = r;
1554 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1555 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1556 * Returns: Scan results on success, -1 on failure
1558 static struct wpa_scan_results *
1559 wpa_driver_nl80211_get_scan_results(void *priv)
1561 struct wpa_driver_nl80211_data *drv = priv;
1563 struct wpa_scan_results *res;
1566 res = os_zalloc(sizeof(*res));
1569 msg = nlmsg_alloc();
1571 goto nla_put_failure;
1573 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1574 NL80211_CMD_GET_SCAN, 0);
1575 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1577 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1580 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1581 (unsigned long) res->num);
1584 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1585 "(%s)", ret, strerror(-ret));
1588 wpa_scan_results_free(res);
1593 static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
1594 wpa_alg alg, const u8 *addr, int key_idx, int set_tx,
1595 const u8 *seq, size_t seq_len,
1596 const u8 *key, size_t key_len)
1601 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1602 "set_tx=%d seq_len=%lu key_len=%lu",
1603 __func__, ifindex, alg, addr, key_idx, set_tx,
1604 (unsigned long) seq_len, (unsigned long) key_len);
1606 msg = nlmsg_alloc();
1610 if (alg == WPA_ALG_NONE) {
1611 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1612 0, NL80211_CMD_DEL_KEY, 0);
1614 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1615 0, NL80211_CMD_NEW_KEY, 0);
1616 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1620 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1623 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1627 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
1630 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
1633 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
1636 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1637 "algorithm %d", __func__, alg);
1644 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1646 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1648 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1649 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1651 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1652 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1654 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1655 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1658 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1659 ret, strerror(-ret));
1662 * If we failed or don't need to set the default TX key (below),
1665 if (ret || !set_tx || alg == WPA_ALG_NONE)
1667 #ifdef HOSTAPD /* FIX: is this needed? */
1670 #endif /* HOSTAPD */
1672 msg = nlmsg_alloc();
1676 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1677 0, NL80211_CMD_SET_KEY, 0);
1678 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1679 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1680 if (alg == WPA_ALG_IGTK)
1681 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1683 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1685 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1689 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1690 "err=%d %s)", ret, strerror(-ret));
1698 static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
1699 const u8 *addr, int key_idx,
1700 int set_tx, const u8 *seq,
1702 const u8 *key, size_t key_len)
1704 struct wpa_driver_nl80211_data *drv = priv;
1705 return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
1706 seq_len, key, key_len);
1710 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1711 const u8 *addr, int cmd, u16 reason_code)
1716 msg = nlmsg_alloc();
1720 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1723 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1724 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1726 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1729 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1730 "(%s)", ret, strerror(-ret));
1731 goto nla_put_failure;
1741 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1744 struct wpa_driver_nl80211_data *drv = priv;
1745 wpa_printf(MSG_DEBUG, "%s", __func__);
1746 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1751 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
1754 struct wpa_driver_nl80211_data *drv = priv;
1755 wpa_printf(MSG_DEBUG, "%s", __func__);
1756 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1761 static int wpa_driver_nl80211_authenticate(
1762 void *priv, struct wpa_driver_auth_params *params)
1764 struct wpa_driver_nl80211_data *drv = priv;
1767 enum nl80211_auth_type type;
1769 drv->associated = 0;
1771 msg = nlmsg_alloc();
1775 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1778 for (i = 0; i < 4; i++) {
1779 if (!params->wep_key[i])
1781 wpa_driver_nl80211_set_key(drv, WPA_ALG_WEP, NULL, i,
1782 i == params->wep_tx_keyidx, NULL, 0,
1784 params->wep_key_len[i]);
1787 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1788 NL80211_CMD_AUTHENTICATE, 0);
1790 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1791 if (params->bssid) {
1792 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
1793 MAC2STR(params->bssid));
1794 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1797 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
1798 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1801 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
1802 params->ssid, params->ssid_len);
1803 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1806 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
1808 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1810 * TODO: if multiple auth_alg options enabled, try them one by one if
1811 * the AP rejects authentication due to unknown auth alg
1813 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
1814 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1815 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
1816 type = NL80211_AUTHTYPE_SHARED_KEY;
1817 else if (params->auth_alg & AUTH_ALG_LEAP)
1818 type = NL80211_AUTHTYPE_NETWORK_EAP;
1819 else if (params->auth_alg & AUTH_ALG_FT)
1820 type = NL80211_AUTHTYPE_FT;
1822 goto nla_put_failure;
1823 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
1824 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
1826 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1829 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1830 "(%s)", ret, strerror(-ret));
1831 goto nla_put_failure;
1834 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
1843 #if defined(CONFIG_AP) || defined(HOSTAPD)
1845 struct phy_info_arg {
1847 struct hostapd_hw_modes *modes;
1850 static int phy_info_handler(struct nl_msg *msg, void *arg)
1852 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1853 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1854 struct phy_info_arg *phy_info = arg;
1856 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1858 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1859 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1860 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1861 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1862 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1863 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1864 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1865 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1868 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1869 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1870 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1871 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1874 struct nlattr *nl_band;
1875 struct nlattr *nl_freq;
1876 struct nlattr *nl_rate;
1877 int rem_band, rem_freq, rem_rate;
1878 struct hostapd_hw_modes *mode;
1879 int idx, mode_is_set;
1881 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1882 genlmsg_attrlen(gnlh, 0), NULL);
1884 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1887 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1888 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1891 phy_info->modes = mode;
1895 mode = &phy_info->modes[*(phy_info->num_modes)];
1896 memset(mode, 0, sizeof(*mode));
1897 *(phy_info->num_modes) += 1;
1899 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1900 nla_len(nl_band), NULL);
1902 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
1903 mode->ht_capab = nla_get_u16(
1904 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
1907 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1908 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1909 nla_len(nl_freq), freq_policy);
1910 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1912 mode->num_channels++;
1915 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1916 if (!mode->channels)
1921 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1922 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1923 nla_len(nl_freq), freq_policy);
1924 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1927 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1928 mode->channels[idx].flag = 0;
1931 /* crude heuristic */
1932 if (mode->channels[idx].freq < 4000)
1933 mode->mode = HOSTAPD_MODE_IEEE80211B;
1935 mode->mode = HOSTAPD_MODE_IEEE80211A;
1939 /* crude heuristic */
1940 if (mode->channels[idx].freq < 4000)
1941 if (mode->channels[idx].freq == 2484)
1942 mode->channels[idx].chan = 14;
1944 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1946 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1948 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1949 mode->channels[idx].flag |=
1950 HOSTAPD_CHAN_DISABLED;
1951 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1952 mode->channels[idx].flag |=
1953 HOSTAPD_CHAN_PASSIVE_SCAN;
1954 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1955 mode->channels[idx].flag |=
1956 HOSTAPD_CHAN_NO_IBSS;
1957 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1958 mode->channels[idx].flag |=
1961 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1962 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1963 mode->channels[idx].max_tx_power =
1964 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1969 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1970 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1971 nla_len(nl_rate), rate_policy);
1972 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1977 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1983 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1984 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1985 nla_len(nl_rate), rate_policy);
1986 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1988 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1990 /* crude heuristic */
1991 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1992 mode->rates[idx].rate > 200)
1993 mode->mode = HOSTAPD_MODE_IEEE80211G;
1995 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1996 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2005 static struct hostapd_hw_modes *
2006 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2009 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2010 int i, mode11g_idx = -1;
2012 /* If only 802.11g mode is included, use it to construct matching
2013 * 802.11b mode data. */
2015 for (m = 0; m < *num_modes; m++) {
2016 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2017 return modes; /* 802.11b already included */
2018 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2022 if (mode11g_idx < 0)
2023 return modes; /* 2.4 GHz band not supported at all */
2025 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2027 return modes; /* Could not add 802.11b mode */
2029 mode = &nmodes[*num_modes];
2030 os_memset(mode, 0, sizeof(*mode));
2034 mode->mode = HOSTAPD_MODE_IEEE80211B;
2036 mode11g = &modes[mode11g_idx];
2037 mode->num_channels = mode11g->num_channels;
2038 mode->channels = os_malloc(mode11g->num_channels *
2039 sizeof(struct hostapd_channel_data));
2040 if (mode->channels == NULL) {
2042 return modes; /* Could not add 802.11b mode */
2044 os_memcpy(mode->channels, mode11g->channels,
2045 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2047 mode->num_rates = 0;
2048 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2049 if (mode->rates == NULL) {
2050 os_free(mode->channels);
2052 return modes; /* Could not add 802.11b mode */
2055 for (i = 0; i < mode11g->num_rates; i++) {
2056 if (mode11g->rates[i].rate > 110 ||
2057 mode11g->rates[i].flags &
2058 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2060 mode->rates[mode->num_rates] = mode11g->rates[i];
2062 if (mode->num_rates == 4)
2066 if (mode->num_rates == 0) {
2067 os_free(mode->channels);
2068 os_free(mode->rates);
2070 return modes; /* No 802.11b rates */
2073 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2080 static struct hostapd_hw_modes *
2081 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2083 struct wpa_driver_nl80211_data *drv = priv;
2085 struct phy_info_arg result = {
2086 .num_modes = num_modes,
2093 msg = nlmsg_alloc();
2097 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2098 0, NL80211_CMD_GET_WIPHY, 0);
2100 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2102 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2103 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2109 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2110 const void *data, size_t len,
2114 0x00, 0x00, /* radiotap version */
2115 0x0e, 0x00, /* radiotap length */
2116 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2117 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2119 0x00, 0x00, /* RX and TX flags to indicate that */
2120 0x00, 0x00, /* this is the injected frame directly */
2122 struct iovec iov[2] = {
2124 .iov_base = &rtap_hdr,
2125 .iov_len = sizeof(rtap_hdr),
2128 .iov_base = (void *) data,
2132 struct msghdr msg = {
2137 .msg_control = NULL,
2138 .msg_controllen = 0,
2143 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2145 return sendmsg(drv->monitor_sock, &msg, 0);
2149 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2152 struct wpa_driver_nl80211_data *drv = priv;
2153 struct ieee80211_mgmt *mgmt;
2154 int do_not_encrypt = 0;
2157 mgmt = (struct ieee80211_mgmt *) data;
2158 fc = le_to_host16(mgmt->frame_control);
2160 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2161 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2163 * Only one of the authentication frame types is encrypted.
2164 * In order for static WEP encryption to work properly (i.e.,
2165 * to not encrypt the frame), we need to tell mac80211 about
2166 * the frames that must not be encrypted.
2168 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2169 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2170 if (auth_alg == WLAN_AUTH_OPEN ||
2171 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
2175 return wpa_driver_nl80211_send_frame(drv, data, data_len,
2180 static int wpa_driver_nl80211_set_beacon_iface(int ifindex, void *priv,
2181 const u8 *head, size_t head_len,
2182 const u8 *tail, size_t tail_len,
2185 struct wpa_driver_nl80211_data *drv = priv;
2187 u8 cmd = NL80211_CMD_NEW_BEACON;
2191 struct i802_bss *bss;
2193 bss = get_bss(drv, ifindex);
2196 beacon_set = bss->beacon_set;
2198 beacon_set = drv->beacon_set;
2199 #endif /* HOSTAPD */
2201 msg = nlmsg_alloc();
2205 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2208 cmd = NL80211_CMD_SET_BEACON;
2210 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2212 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2213 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2214 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2215 if (!drv->beacon_int)
2216 drv->beacon_int = 100;
2217 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
2218 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2220 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2222 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2223 ret, strerror(-ret));
2226 bss->beacon_set = 1;
2228 drv->beacon_set = 1;
2229 #endif /* HOSTAPD */
2237 static int wpa_driver_nl80211_set_beacon_int(void *priv, int value)
2239 struct wpa_driver_nl80211_data *drv = priv;
2242 drv->beacon_int = value;
2245 if (!drv->bss.beacon_set)
2248 if (!drv->beacon_set)
2250 #endif /* HOSTAPD */
2252 msg = nlmsg_alloc();
2256 wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d", value);
2257 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2258 0, NL80211_CMD_SET_BEACON, 0);
2259 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2261 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
2263 return send_and_recv_msgs(drv, msg, NULL, NULL);
2269 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2270 int freq, int ht_enabled,
2271 int sec_channel_offset)
2276 msg = nlmsg_alloc();
2280 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2281 NL80211_CMD_SET_WIPHY, 0);
2283 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2284 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2286 switch (sec_channel_offset) {
2288 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2289 NL80211_CHAN_HT40MINUS);
2292 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2293 NL80211_CHAN_HT40PLUS);
2296 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2302 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2305 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2306 "%d (%s)", freq, ret, strerror(-ret));
2311 #endif /* CONFIG_AP || HOSTAPD */
2316 static int wpa_driver_nl80211_set_beacon(void *priv,
2317 const u8 *head, size_t head_len,
2318 const u8 *tail, size_t tail_len,
2321 struct wpa_driver_nl80211_data *drv = priv;
2322 return wpa_driver_nl80211_set_beacon_iface(drv->ifindex, priv,
2328 #endif /* CONFIG_AP */
2330 #if defined(CONFIG_AP) || defined(HOSTAPD)
2332 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2338 /* stop listening for EAPOL on this interface */
2339 del_ifidx(drv, ifidx);
2340 #endif /* HOSTAPD */
2342 msg = nlmsg_alloc();
2344 goto nla_put_failure;
2346 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2347 0, NL80211_CMD_DEL_INTERFACE, 0);
2348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2350 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2353 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2358 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2359 const char *ifname, enum nl80211_iftype iftype,
2362 struct nl_msg *msg, *flags = NULL;
2366 msg = nlmsg_alloc();
2370 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2371 0, NL80211_CMD_NEW_INTERFACE, 0);
2372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2373 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2374 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2376 if (iftype == NL80211_IFTYPE_MONITOR) {
2379 flags = nlmsg_alloc();
2381 goto nla_put_failure;
2383 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2385 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2390 goto nla_put_failure;
2393 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2396 wpa_printf(MSG_ERROR, "Failed to create interface %s.",
2401 ifidx = if_nametoindex(ifname);
2407 /* start listening for EAPOL on this interface */
2408 add_ifidx(drv, ifidx);
2410 if (addr && iftype == NL80211_IFTYPE_AP &&
2411 set_ifhwaddr(drv, ifname, addr)) {
2412 nl80211_remove_iface(drv, ifidx);
2415 #endif /* HOSTAPD */
2420 #endif /* CONFIG_AP || HOSTAPD */
2424 void ap_tx_status(void *ctx, const u8 *addr,
2425 const u8 *buf, size_t len, int ack);
2426 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr);
2427 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2428 struct hostapd_frame_info *fi);
2429 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2431 #endif /* CONFIG_AP */
2433 #if defined(CONFIG_AP) || defined(HOSTAPD)
2435 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2437 struct ieee80211_hdr *hdr;
2438 u16 fc, type, stype;
2440 hdr = (struct ieee80211_hdr *) buf;
2441 fc = le_to_host16(hdr->frame_control);
2443 type = WLAN_FC_GET_TYPE(fc);
2444 stype = WLAN_FC_GET_STYPE(fc);
2447 case WLAN_FC_TYPE_MGMT:
2448 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2449 ok ? "ACK" : "fail");
2451 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2453 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
2454 #endif /* HOSTAPD */
2456 case WLAN_FC_TYPE_CTRL:
2457 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2458 ok ? "ACK" : "fail");
2460 case WLAN_FC_TYPE_DATA:
2462 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2464 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
2465 #endif /* HOSTAPD */
2468 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2475 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2476 u8 *buf, size_t len,
2477 struct hostapd_frame_info *hfi,
2478 enum ieee80211_msg_type msg_type)
2480 struct ieee80211_hdr *hdr;
2481 u16 fc, type, stype;
2482 size_t data_len = len;
2484 void *ctx = drv->ctx;
2486 struct hostapd_iface *iface = drv->hapd->iface;
2487 struct hostapd_data *hapd = NULL;
2488 int broadcast_bssid = 0;
2490 #endif /* HOSTAPD */
2493 * PS-Poll frames are 16 bytes. All other frames are
2494 * 24 bytes or longer.
2499 hdr = (struct ieee80211_hdr *) buf;
2500 fc = le_to_host16(hdr->frame_control);
2502 type = WLAN_FC_GET_TYPE(fc);
2503 stype = WLAN_FC_GET_STYPE(fc);
2506 case WLAN_FC_TYPE_DATA:
2509 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
2513 case WLAN_FC_FROMDS:
2521 case WLAN_FC_TYPE_CTRL:
2522 /* discard non-ps-poll frames */
2523 if (stype != WLAN_FC_STYPE_PSPOLL)
2527 case WLAN_FC_TYPE_MGMT:
2536 /* find interface frame belongs to */
2537 for (i = 0; i < iface->num_bss; i++) {
2538 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
2539 hapd = iface->bss[i];
2545 hapd = iface->bss[0];
2547 if (bssid[0] != 0xff || bssid[1] != 0xff ||
2548 bssid[2] != 0xff || bssid[3] != 0xff ||
2549 bssid[4] != 0xff || bssid[5] != 0xff) {
2551 * Unknown BSSID - drop frame if this is not from
2552 * passive scanning or a beacon (at least ProbeReq
2553 * frames to other APs may be allowed through RX
2554 * filtering in the wlan hw/driver)
2556 if ((type != WLAN_FC_TYPE_MGMT ||
2557 stype != WLAN_FC_STYPE_BEACON))
2560 broadcast_bssid = 1;
2563 #endif /* HOSTAPD */
2566 case ieee80211_msg_normal:
2567 /* continue processing */
2569 case ieee80211_msg_tx_callback_ack:
2570 handle_tx_callback(ctx, buf, data_len, 1);
2572 case ieee80211_msg_tx_callback_fail:
2573 handle_tx_callback(ctx, buf, data_len, 0);
2578 case WLAN_FC_TYPE_MGMT:
2579 if (stype != WLAN_FC_STYPE_BEACON &&
2580 stype != WLAN_FC_STYPE_PROBE_REQ)
2581 wpa_printf(MSG_MSGDUMP, "MGMT");
2583 if (broadcast_bssid) {
2584 for (i = 0; i < iface->num_bss; i++)
2585 hostapd_mgmt_rx(iface->bss[i], buf, data_len,
2588 hostapd_mgmt_rx(hapd, buf, data_len, stype, hfi);
2590 ap_mgmt_rx(drv->ctx, buf, data_len, stype, hfi);
2591 #endif /* HOSTAPD */
2593 case WLAN_FC_TYPE_CTRL:
2594 /* can only get here with PS-Poll frames */
2595 wpa_printf(MSG_DEBUG, "CTRL");
2597 hostapd_rx_from_unknown_sta(drv->hapd, hdr->addr2);
2599 ap_rx_from_unknown_sta(drv->ctx, hdr->addr2);
2600 #endif /* HOSTAPD */
2602 case WLAN_FC_TYPE_DATA:
2604 hostapd_rx_from_unknown_sta(drv->hapd, hdr->addr2);
2606 ap_rx_from_unknown_sta(drv->ctx, hdr->addr2);
2607 #endif /* HOSTAPD */
2613 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2615 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2617 unsigned char buf[3000];
2618 struct ieee80211_radiotap_iterator iter;
2620 struct hostapd_frame_info hfi;
2621 int injected = 0, failed = 0, msg_type, rxflags = 0;
2623 len = recv(sock, buf, sizeof(buf), 0);
2629 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2630 printf("received invalid radiotap frame\n");
2634 memset(&hfi, 0, sizeof(hfi));
2637 ret = ieee80211_radiotap_iterator_next(&iter);
2641 printf("received invalid radiotap frame (%d)\n", ret);
2644 switch (iter.this_arg_index) {
2645 case IEEE80211_RADIOTAP_FLAGS:
2646 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2649 case IEEE80211_RADIOTAP_RX_FLAGS:
2652 case IEEE80211_RADIOTAP_TX_FLAGS:
2654 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2655 IEEE80211_RADIOTAP_F_TX_FAIL;
2657 case IEEE80211_RADIOTAP_DATA_RETRIES:
2659 case IEEE80211_RADIOTAP_CHANNEL:
2660 /* TODO convert from freq/flags to channel number
2665 case IEEE80211_RADIOTAP_RATE:
2666 hfi.datarate = *iter.this_arg * 5;
2668 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2669 hfi.ssi_signal = *iter.this_arg;
2674 if (rxflags && injected)
2678 msg_type = ieee80211_msg_normal;
2680 msg_type = ieee80211_msg_tx_callback_fail;
2682 msg_type = ieee80211_msg_tx_callback_ack;
2684 handle_frame(drv, buf + iter.max_length,
2685 len - iter.max_length, &hfi, msg_type);
2690 * we post-process the filter code later and rewrite
2691 * this to the offset to the last instruction
2696 static struct sock_filter msock_filter_insns[] = {
2698 * do a little-endian load of the radiotap length field
2700 /* load lower byte into A */
2701 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2702 /* put it into X (== index register) */
2703 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2704 /* load upper byte into A */
2705 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2706 /* left-shift it by 8 */
2707 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2709 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2710 /* put result into X */
2711 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2714 * Allow management frames through, this also gives us those
2715 * management frames that we sent ourselves with status
2717 /* load the lower byte of the IEEE 802.11 frame control field */
2718 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2719 /* mask off frame type and version */
2720 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2721 /* accept frame if it's both 0, fall through otherwise */
2722 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2725 * TODO: add a bit to radiotap RX flags that indicates
2726 * that the sending station is not associated, then
2727 * add a filter here that filters on our DA and that flag
2728 * to allow us to deauth frames to that bad station.
2730 * Not a regression -- we didn't do it before either.
2735 * drop non-data frames, WDS frames
2737 /* load the lower byte of the frame control field */
2738 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2739 /* mask off QoS bit */
2740 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2741 /* drop non-data frames */
2742 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2743 /* load the upper byte of the frame control field */
2744 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2745 /* mask off toDS/fromDS */
2746 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2747 /* drop WDS frames */
2748 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2752 * add header length to index
2754 /* load the lower byte of the frame control field */
2755 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2756 /* mask off QoS bit */
2757 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2758 /* right shift it by 6 to give 0 or 2 */
2759 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2760 /* add data frame header length */
2761 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2762 /* add index, was start of 802.11 header */
2763 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2764 /* move to index, now start of LL header */
2765 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2768 * Accept empty data frames, we use those for
2771 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2772 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2775 * Accept EAPOL frames
2777 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2778 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2779 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2780 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2782 /* keep these last two statements or change the code below */
2783 /* return 0 == "DROP" */
2784 BPF_STMT(BPF_RET | BPF_K, 0),
2785 /* return ~0 == "keep all" */
2786 BPF_STMT(BPF_RET | BPF_K, ~0),
2789 static struct sock_fprog msock_filter = {
2790 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2791 .filter = msock_filter_insns,
2795 static int add_monitor_filter(int s)
2799 /* rewrite all PASS/FAIL jump offsets */
2800 for (idx = 0; idx < msock_filter.len; idx++) {
2801 struct sock_filter *insn = &msock_filter_insns[idx];
2803 if (BPF_CLASS(insn->code) == BPF_JMP) {
2804 if (insn->code == (BPF_JMP|BPF_JA)) {
2805 if (insn->k == PASS)
2806 insn->k = msock_filter.len - idx - 2;
2807 else if (insn->k == FAIL)
2808 insn->k = msock_filter.len - idx - 3;
2811 if (insn->jt == PASS)
2812 insn->jt = msock_filter.len - idx - 2;
2813 else if (insn->jt == FAIL)
2814 insn->jt = msock_filter.len - idx - 3;
2816 if (insn->jf == PASS)
2817 insn->jf = msock_filter.len - idx - 2;
2818 else if (insn->jf == FAIL)
2819 insn->jf = msock_filter.len - idx - 3;
2823 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2824 &msock_filter, sizeof(msock_filter))) {
2825 perror("SO_ATTACH_FILTER");
2834 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2837 struct sockaddr_ll ll;
2841 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2842 buf[IFNAMSIZ - 1] = '\0';
2844 drv->monitor_ifidx =
2845 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2847 if (drv->monitor_ifidx < 0)
2850 if (hostapd_set_iface_flags(drv, buf, 1))
2853 memset(&ll, 0, sizeof(ll));
2854 ll.sll_family = AF_PACKET;
2855 ll.sll_ifindex = drv->monitor_ifidx;
2856 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2857 if (drv->monitor_sock < 0) {
2858 perror("socket[PF_PACKET,SOCK_RAW]");
2862 if (add_monitor_filter(drv->monitor_sock)) {
2863 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2864 "interface; do filtering in user space");
2865 /* This works, but will cost in performance. */
2868 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
2869 perror("monitor socket bind");
2873 optlen = sizeof(optval);
2876 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2877 perror("Failed to set socket priority");
2881 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2883 printf("Could not register monitor read socket\n");
2889 nl80211_remove_iface(drv, drv->monitor_ifidx);
2893 #endif /* CONFIG_AP || HOSTAPD */
2897 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
2898 struct wpa_driver_associate_params *params)
2900 if (drv->monitor_ifidx < 0 &&
2901 nl80211_create_monitor_interface(drv))
2904 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
2905 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
2906 nl80211_remove_iface(drv, drv->monitor_ifidx);
2907 drv->monitor_ifidx = -1;
2911 /* TODO: setup monitor interface (and add code somewhere to remove this
2912 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
2916 #endif /* CONFIG_AP */
2919 static int wpa_driver_nl80211_associate(
2920 void *priv, struct wpa_driver_associate_params *params)
2922 struct wpa_driver_nl80211_data *drv = priv;
2927 if (params->mode == 2)
2928 return wpa_driver_nl80211_ap(drv, params);
2929 #endif /* CONFIG_AP */
2932 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
2933 params->drop_unencrypted);
2934 #endif /* NO_WEXT */
2936 drv->associated = 0;
2938 msg = nlmsg_alloc();
2942 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
2944 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2945 NL80211_CMD_ASSOCIATE, 0);
2947 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2948 if (params->bssid) {
2949 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2950 MAC2STR(params->bssid));
2951 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2954 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2955 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2958 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2959 params->ssid, params->ssid_len);
2960 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2962 if (params->ssid_len > sizeof(drv->ssid))
2963 goto nla_put_failure;
2964 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
2965 drv->ssid_len = params->ssid_len;
2967 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
2969 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
2972 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2975 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2976 "(%s)", ret, strerror(-ret));
2977 goto nla_put_failure;
2980 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
2989 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
2990 int ifindex, int mode)
2995 msg = nlmsg_alloc();
2999 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3000 0, NL80211_CMD_SET_INTERFACE, 0);
3001 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3002 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3004 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3008 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3009 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3014 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3016 struct wpa_driver_nl80211_data *drv = priv;
3022 nlmode = NL80211_IFTYPE_STATION;
3025 nlmode = NL80211_IFTYPE_ADHOC;
3028 nlmode = NL80211_IFTYPE_AP;
3034 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3035 drv->nlmode = nlmode;
3039 if (nlmode == drv->nlmode)
3040 return 0; /* Already in the requested mode */
3042 /* mac80211 doesn't allow mode changes while the device is up, so
3043 * take the device down, try to set the mode again, and bring the
3046 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3047 /* Try to set the mode again while the interface is down */
3048 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3049 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3054 drv->nlmode = nlmode;
3060 static int wpa_driver_nl80211_get_capa(void *priv,
3061 struct wpa_driver_capa *capa)
3063 struct wpa_driver_nl80211_data *drv = priv;
3064 if (!drv->has_capability)
3066 os_memcpy(capa, &drv->capa, sizeof(*capa));
3071 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3073 struct wpa_driver_nl80211_data *drv = priv;
3075 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3076 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3077 drv->operstate = state;
3078 return wpa_driver_nl80211_send_oper_ifla(
3079 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3085 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3088 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3091 struct i802_bss *bss = &drv->bss;
3093 if (ifindex == bss->ifindex)
3097 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3102 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3107 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3109 for (i = 0; i < drv->num_if_indices; i++) {
3110 if (drv->if_indices[i] == 0) {
3111 drv->if_indices[i] = ifidx;
3116 if (drv->if_indices != drv->default_if_indices)
3117 old = drv->if_indices;
3121 drv->if_indices = realloc(old,
3122 sizeof(int) * (drv->num_if_indices + 1));
3123 if (!drv->if_indices) {
3125 drv->if_indices = drv->default_if_indices;
3127 drv->if_indices = old;
3128 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3130 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3133 drv->if_indices[drv->num_if_indices] = ifidx;
3134 drv->num_if_indices++;
3138 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3142 for (i = 0; i < drv->num_if_indices; i++) {
3143 if (drv->if_indices[i] == ifidx) {
3144 drv->if_indices[i] = 0;
3151 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3155 for (i = 0; i < drv->num_if_indices; i++)
3156 if (drv->if_indices[i] == ifidx)
3163 static int i802_set_key(const char *iface, void *priv, wpa_alg alg,
3164 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
3165 size_t seq_len, const u8 *key, size_t key_len)
3167 struct wpa_driver_nl80211_data *drv = priv;
3168 return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
3169 set_tx, seq, seq_len, key, key_len);
3173 static inline int min_int(int a, int b)
3181 static int get_key_handler(struct nl_msg *msg, void *arg)
3183 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3184 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3186 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3187 genlmsg_attrlen(gnlh, 0), NULL);
3190 * TODO: validate the key index and mac address!
3191 * Otherwise, there's a race condition as soon as
3192 * the kernel starts sending key notifications.
3195 if (tb[NL80211_ATTR_KEY_SEQ])
3196 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3197 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3202 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3205 struct wpa_driver_nl80211_data *drv = priv;
3208 msg = nlmsg_alloc();
3212 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3213 0, NL80211_CMD_GET_KEY, 0);
3216 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3217 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3218 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3222 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3228 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3231 struct wpa_driver_nl80211_data *drv = priv;
3233 u8 rates[NL80211_MAX_SUPP_RATES];
3237 msg = nlmsg_alloc();
3241 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3242 NL80211_CMD_SET_BSS, 0);
3244 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3245 rates[rates_len++] = basic_rates[i] / 5;
3247 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3249 /* TODO: multi-BSS support */
3250 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3252 return send_and_recv_msgs(drv, msg, NULL, NULL);
3258 /* Set kernel driver on given frequency (MHz) */
3259 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3261 struct wpa_driver_nl80211_data *drv = priv;
3262 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3263 freq->sec_channel_offset);
3267 static int i802_set_rts(void *priv, int rts)
3272 struct wpa_driver_nl80211_data *drv = priv;
3275 memset(&iwr, 0, sizeof(iwr));
3276 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
3277 iwr.u.rts.value = rts;
3278 iwr.u.rts.fixed = 1;
3280 if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
3281 perror("ioctl[SIOCSIWRTS]");
3286 #endif /* NO_WEXT */
3290 static int i802_set_frag(void *priv, int frag)
3295 struct wpa_driver_nl80211_data *drv = priv;
3298 memset(&iwr, 0, sizeof(iwr));
3299 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
3300 iwr.u.frag.value = frag;
3301 iwr.u.frag.fixed = 1;
3303 if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
3304 perror("ioctl[SIOCSIWFRAG]");
3309 #endif /* NO_WEXT */
3313 static int i802_set_retry(void *priv, int short_retry, int long_retry)
3318 struct wpa_driver_nl80211_data *drv = priv;
3321 memset(&iwr, 0, sizeof(iwr));
3322 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
3324 iwr.u.retry.value = short_retry;
3325 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
3326 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
3327 perror("ioctl[SIOCSIWRETRY(short)]");
3331 iwr.u.retry.value = long_retry;
3332 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
3333 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
3334 perror("ioctl[SIOCSIWRETRY(long)]");
3339 #endif /* NO_WEXT */
3343 static int i802_flush(void *priv)
3345 struct wpa_driver_nl80211_data *drv = priv;
3348 msg = nlmsg_alloc();
3352 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3353 0, NL80211_CMD_DEL_STATION, 0);
3356 * XXX: FIX! this needs to flush all VLANs too
3358 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3359 if_nametoindex(drv->ifname));
3361 return send_and_recv_msgs(drv, msg, NULL, NULL);
3367 static int get_sta_handler(struct nl_msg *msg, void *arg)
3369 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3370 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3371 struct hostap_sta_driver_data *data = arg;
3372 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3373 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3374 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3375 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3376 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3377 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3378 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3381 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3382 genlmsg_attrlen(gnlh, 0), NULL);
3385 * TODO: validate the interface and mac address!
3386 * Otherwise, there's a race condition as soon as
3387 * the kernel starts sending station notifications.
3390 if (!tb[NL80211_ATTR_STA_INFO]) {
3391 wpa_printf(MSG_DEBUG, "sta stats missing!");
3394 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3395 tb[NL80211_ATTR_STA_INFO],
3397 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3401 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3402 data->inactive_msec =
3403 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3404 if (stats[NL80211_STA_INFO_RX_BYTES])
3405 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3406 if (stats[NL80211_STA_INFO_TX_BYTES])
3407 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3408 if (stats[NL80211_STA_INFO_RX_PACKETS])
3410 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3411 if (stats[NL80211_STA_INFO_TX_PACKETS])
3413 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3418 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3421 struct wpa_driver_nl80211_data *drv = priv;
3424 os_memset(data, 0, sizeof(*data));
3425 msg = nlmsg_alloc();
3429 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3430 0, NL80211_CMD_GET_STATION, 0);
3432 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3433 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3435 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3441 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
3442 size_t data_len, int encrypt, const u8 *own_addr)
3444 struct wpa_driver_nl80211_data *drv = priv;
3445 struct ieee80211_hdr *hdr;
3450 int qos = sta->flags & WLAN_STA_WME;
3455 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3457 hdr = os_zalloc(len);
3459 printf("malloc() failed for i802_send_data(len=%lu)\n",
3460 (unsigned long) len);
3464 hdr->frame_control =
3465 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3466 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3468 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3469 #if 0 /* To be enabled if qos determination is added above */
3471 hdr->frame_control |=
3472 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3476 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3477 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3478 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3479 pos = (u8 *) (hdr + 1);
3481 #if 0 /* To be enabled if qos determination is added above */
3483 /* add an empty QoS header if needed */
3490 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3491 pos += sizeof(rfc1042_header);
3492 WPA_PUT_BE16(pos, ETH_P_PAE);
3494 memcpy(pos, data, data_len);
3496 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3498 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3500 (unsigned long) len, errno, strerror(errno));
3508 static int i802_sta_add(const char *ifname, void *priv,
3509 struct hostapd_sta_add_params *params)
3511 struct wpa_driver_nl80211_data *drv = priv;
3515 msg = nlmsg_alloc();
3519 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3520 0, NL80211_CMD_NEW_STATION, 0);
3522 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3523 if_nametoindex(drv->ifname));
3524 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3525 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3526 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3527 params->supp_rates);
3528 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3529 params->listen_interval);
3531 #ifdef CONFIG_IEEE80211N
3532 if (params->ht_capabilities) {
3533 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3534 params->ht_capabilities->length,
3535 ¶ms->ht_capabilities->data);
3537 #endif /* CONFIG_IEEE80211N */
3539 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3541 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3542 "result: %d (%s)", ret, strerror(-ret));
3550 static int i802_sta_remove(void *priv, const u8 *addr)
3552 struct wpa_driver_nl80211_data *drv = priv;
3556 msg = nlmsg_alloc();
3560 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3561 0, NL80211_CMD_DEL_STATION, 0);
3563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3564 if_nametoindex(drv->ifname));
3565 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3567 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3576 static int i802_sta_set_flags(void *priv, const u8 *addr,
3577 int total_flags, int flags_or, int flags_and)
3579 struct wpa_driver_nl80211_data *drv = priv;
3580 struct nl_msg *msg, *flags = NULL;
3582 msg = nlmsg_alloc();
3586 flags = nlmsg_alloc();
3592 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3593 0, NL80211_CMD_SET_STATION, 0);
3595 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3596 if_nametoindex(drv->ifname));
3597 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3599 if (total_flags & WLAN_STA_AUTHORIZED)
3600 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3602 if (total_flags & WLAN_STA_WMM)
3603 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3605 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3606 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3608 if (total_flags & WLAN_STA_MFP)
3609 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3611 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3612 goto nla_put_failure;
3616 return send_and_recv_msgs(drv, msg, NULL, NULL);
3623 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3624 int cw_min, int cw_max, int burst_time)
3626 struct wpa_driver_nl80211_data *drv = priv;
3628 struct nlattr *txq, *params;
3630 msg = nlmsg_alloc();
3634 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3635 0, NL80211_CMD_SET_WIPHY, 0);
3637 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3639 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
3641 goto nla_put_failure;
3643 /* We are only sending parameters for a single TXQ at a time */
3644 params = nla_nest_start(msg, 1);
3646 goto nla_put_failure;
3648 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
3649 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
3650 * 32 usec, so need to convert the value here. */
3651 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
3652 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
3653 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
3654 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
3656 nla_nest_end(msg, params);
3658 nla_nest_end(msg, txq);
3660 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3667 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
3669 struct wpa_driver_nl80211_data *drv = priv;
3671 struct i802_bss *bss;
3673 bss = os_zalloc(sizeof(*bss));
3676 bss->ifindex = if_nametoindex(ifname);
3678 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
3683 if (hostapd_set_iface_flags(priv, ifname, 1)) {
3684 nl80211_remove_iface(priv, ifidx);
3688 bss->next = drv->bss.next;
3689 drv->bss.next = bss;
3694 static int i802_bss_remove(void *priv, const char *ifname)
3696 struct wpa_driver_nl80211_data *drv = priv;
3697 struct i802_bss *bss, *prev;
3698 int ifindex = if_nametoindex(ifname);
3699 nl80211_remove_iface(priv, ifindex);
3701 bss = drv->bss.next;
3703 if (ifindex == bss->ifindex) {
3704 prev->next = bss->next;
3715 static int i802_set_beacon(const char *iface, void *priv,
3716 const u8 *head, size_t head_len,
3717 const u8 *tail, size_t tail_len, int dtim_period)
3719 return wpa_driver_nl80211_set_beacon_iface(if_nametoindex(iface), priv,
3726 static int i802_del_beacon(struct wpa_driver_nl80211_data *drv)
3730 msg = nlmsg_alloc();
3734 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3735 0, NL80211_CMD_DEL_BEACON, 0);
3736 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3738 return send_and_recv_msgs(drv, msg, NULL, NULL);
3744 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
3746 struct wpa_driver_nl80211_data *drv = priv;
3749 msg = nlmsg_alloc();
3753 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3754 NL80211_CMD_SET_BSS, 0);
3757 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3759 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3761 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3763 /* TODO: multi-BSS support */
3764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3766 return send_and_recv_msgs(drv, msg, NULL, NULL);
3772 static int i802_set_cts_protect(void *priv, int value)
3774 return i802_set_bss(priv, value, -1, -1);
3778 static int i802_set_preamble(void *priv, int value)
3780 return i802_set_bss(priv, -1, value, -1);
3784 static int i802_set_short_slot_time(void *priv, int value)
3786 return i802_set_bss(priv, -1, -1, value);
3790 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
3793 case HOSTAPD_IF_VLAN:
3794 return NL80211_IFTYPE_AP_VLAN;
3800 static int i802_if_add(const char *iface, void *priv,
3801 enum hostapd_driver_if_type type, char *ifname,
3804 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
3810 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
3811 char *ifname, const u8 *addr)
3813 /* unused at the moment */
3818 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
3819 const char *ifname, const u8 *addr)
3821 nl80211_remove_iface(priv, if_nametoindex(ifname));
3826 static int i802_set_sta_vlan(void *priv, const u8 *addr,
3827 const char *ifname, int vlan_id)
3829 struct wpa_driver_nl80211_data *drv = priv;
3832 msg = nlmsg_alloc();
3836 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3837 0, NL80211_CMD_SET_STATION, 0);
3839 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3840 if_nametoindex(drv->ifname));
3841 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3842 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3843 if_nametoindex(ifname));
3845 return send_and_recv_msgs(drv, msg, NULL, NULL);
3851 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
3853 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3854 struct sockaddr_ll lladdr;
3855 unsigned char buf[3000];
3857 socklen_t fromlen = sizeof(lladdr);
3859 len = recvfrom(sock, buf, sizeof(buf), 0,
3860 (struct sockaddr *)&lladdr, &fromlen);
3866 if (have_ifidx(drv, lladdr.sll_ifindex)) {
3867 struct hostapd_data *hapd;
3868 hapd = hostapd_sta_get_bss(drv->hapd, lladdr.sll_addr);
3871 hostapd_eapol_receive(hapd, lladdr.sll_addr, buf, len);
3876 static int i802_get_inact_sec(void *priv, const u8 *addr)
3878 struct hostap_sta_driver_data data;
3881 data.inactive_msec = (unsigned long) -1;
3882 ret = i802_read_sta_data(priv, &data, addr);
3883 if (ret || data.inactive_msec == (unsigned long) -1)
3885 return data.inactive_msec / 1000;
3889 static int i802_sta_clear_stats(void *priv, const u8 *addr)
3898 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
3901 struct wpa_driver_nl80211_data *drv = priv;
3902 struct ieee80211_mgmt mgmt;
3904 memset(&mgmt, 0, sizeof(mgmt));
3905 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3906 WLAN_FC_STYPE_DEAUTH);
3907 memcpy(mgmt.da, addr, ETH_ALEN);
3908 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3909 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
3910 mgmt.u.deauth.reason_code = host_to_le16(reason);
3911 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3913 sizeof(mgmt.u.deauth));
3917 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
3920 struct wpa_driver_nl80211_data *drv = priv;
3921 struct ieee80211_mgmt mgmt;
3923 memset(&mgmt, 0, sizeof(mgmt));
3924 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3925 WLAN_FC_STYPE_DISASSOC);
3926 memcpy(mgmt.da, addr, ETH_ALEN);
3927 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3928 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
3929 mgmt.u.disassoc.reason_code = host_to_le16(reason);
3930 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3932 sizeof(mgmt.u.disassoc));
3936 static void *i802_init(struct hostapd_data *hapd,
3937 struct wpa_init_params *params)
3939 struct wpa_driver_nl80211_data *drv;
3942 drv = wpa_driver_nl80211_init(hapd, params->ifname);
3947 drv->bss.ifindex = drv->ifindex;
3949 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
3950 drv->if_indices = drv->default_if_indices;
3951 for (i = 0; i < params->num_bridge; i++) {
3952 if (params->bridge[i])
3953 add_ifidx(drv, if_nametoindex(params->bridge[i]));
3956 /* start listening for EAPOL on the default AP interface */
3957 add_ifidx(drv, drv->ifindex);
3959 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
3962 if (params->bssid && set_ifhwaddr(drv, drv->ifname, params->bssid))
3965 /* Initialise a monitor interface */
3966 if (nl80211_create_monitor_interface(drv))
3969 if (nl80211_set_mode(drv, drv->ifindex, NL80211_IFTYPE_AP)) {
3970 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
3971 "into AP mode", drv->ifname);
3975 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3978 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
3979 if (drv->eapol_sock < 0) {
3980 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
3984 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
3986 printf("Could not register read socket for eapol\n");
3990 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
3996 if (drv->monitor_ifidx >= 0)
3997 nl80211_remove_iface(drv, drv->monitor_ifidx);
3998 if (drv->ioctl_sock >= 0)
3999 close(drv->ioctl_sock);
4001 genl_family_put(drv->nl80211);
4002 nl_cache_free(drv->nl_cache);
4003 nl_handle_destroy(drv->nl_handle);
4004 nl_cb_put(drv->nl_cb);
4011 static void i802_deinit(void *priv)
4013 wpa_driver_nl80211_deinit(priv);
4016 #endif /* HOSTAPD */
4019 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4021 .desc = "Linux nl80211/cfg80211",
4022 .get_bssid = wpa_driver_nl80211_get_bssid,
4023 .get_ssid = wpa_driver_nl80211_get_ssid,
4024 .set_key = wpa_driver_nl80211_set_key,
4025 .scan2 = wpa_driver_nl80211_scan,
4026 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4027 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4028 .disassociate = wpa_driver_nl80211_disassociate,
4029 .authenticate = wpa_driver_nl80211_authenticate,
4030 .associate = wpa_driver_nl80211_associate,
4031 .init = wpa_driver_nl80211_init,
4032 .deinit = wpa_driver_nl80211_deinit,
4033 .get_capa = wpa_driver_nl80211_get_capa,
4034 .set_operstate = wpa_driver_nl80211_set_operstate,
4035 .set_country = wpa_driver_nl80211_set_country,
4036 .set_mode = wpa_driver_nl80211_set_mode,
4038 .set_beacon = wpa_driver_nl80211_set_beacon,
4039 #endif /* CONFIG_AP */
4040 #if defined(CONFIG_AP) || defined(HOSTAPD)
4041 .send_mlme = wpa_driver_nl80211_send_mlme,
4042 .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
4043 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4044 #endif /* CONFIG_AP || HOSTAPD */
4046 .hapd_init = i802_init,
4047 .hapd_deinit = i802_deinit,
4048 .hapd_set_key = i802_set_key,
4049 .get_seqnum = i802_get_seqnum,
4050 .flush = i802_flush,
4051 .read_sta_data = i802_read_sta_data,
4052 .hapd_send_eapol = i802_send_eapol,
4053 .sta_set_flags = i802_sta_set_flags,
4054 .sta_deauth = i802_sta_deauth,
4055 .sta_disassoc = i802_sta_disassoc,
4056 .sta_remove = i802_sta_remove,
4057 .sta_add = i802_sta_add,
4058 .get_inact_sec = i802_get_inact_sec,
4059 .sta_clear_stats = i802_sta_clear_stats,
4060 .set_freq = i802_set_freq,
4061 .set_rts = i802_set_rts,
4062 .set_frag = i802_set_frag,
4063 .set_retry = i802_set_retry,
4064 .set_rate_sets = i802_set_rate_sets,
4065 .hapd_set_beacon = i802_set_beacon,
4066 .set_cts_protect = i802_set_cts_protect,
4067 .set_preamble = i802_set_preamble,
4068 .set_short_slot_time = i802_set_short_slot_time,
4069 .set_tx_queue_params = i802_set_tx_queue_params,
4070 .bss_add = i802_bss_add,
4071 .bss_remove = i802_bss_remove,
4072 .if_add = i802_if_add,
4073 .if_update = i802_if_update,
4074 .if_remove = i802_if_remove,
4075 .set_sta_vlan = i802_set_sta_vlan,
4076 #endif /* HOSTAPD */