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"
42 #include "../../hostapd/hostapd_defs.h"
43 #include "../../hostapd/sta_flags.h"
44 #endif /* CONFIG_AP || HOSTAPD */
47 #include "ieee802_11_common.h"
50 /* libnl 2.0 compatibility code */
51 #define nl_handle_alloc_cb nl_socket_alloc_cb
52 #define nl_handle_destroy nl_socket_free
53 #endif /* CONFIG_LIBNL20 */
59 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
62 #define IFF_DORMANT 0x20000 /* driver signals dormant */
65 #ifndef IF_OPER_DORMANT
66 #define IF_OPER_DORMANT 5
73 struct i802_bss *next;
75 unsigned int beacon_set:1;
78 struct wpa_driver_nl80211_data {
81 int ioctl_sock; /* socket for ioctl() use */
82 char ifname[IFNAMSIZ + 1];
85 struct wpa_driver_capa capa;
90 int scan_complete_events;
92 struct nl_handle *nl_handle;
93 struct nl_cache *nl_cache;
95 struct genl_family *nl80211;
102 int ap_scan_as_station;
109 unsigned int beacon_set:1;
110 #endif /* CONFIG_AP */
113 int eapol_sock; /* socket for EAPOL frames */
115 int default_if_indices[16];
127 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
129 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
131 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
133 #if defined(CONFIG_AP) || defined(HOSTAPD)
134 static void nl80211_remove_monitor_interface(
135 struct wpa_driver_nl80211_data *drv);
136 #endif /* CONFIG_AP || HOSTAPD */
139 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
141 #endif /* CONFIG_AP */
144 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
145 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
146 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
148 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
150 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
155 static int ack_handler(struct nl_msg *msg, void *arg)
162 static int finish_handler(struct nl_msg *msg, void *arg)
169 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
178 static int no_seq_check(struct nl_msg *msg, void *arg)
184 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
186 int (*valid_handler)(struct nl_msg *, void *),
192 cb = nl_cb_clone(drv->nl_cb);
196 err = nl_send_auto_complete(drv->nl_handle, msg);
202 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
203 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
204 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
207 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
208 valid_handler, valid_data);
211 nl_recvmsgs(drv->nl_handle, cb);
225 static int family_handler(struct nl_msg *msg, void *arg)
227 struct family_data *res = arg;
228 struct nlattr *tb[CTRL_ATTR_MAX + 1];
229 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
230 struct nlattr *mcgrp;
233 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
234 genlmsg_attrlen(gnlh, 0), NULL);
235 if (!tb[CTRL_ATTR_MCAST_GROUPS])
238 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
239 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
240 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
241 nla_len(mcgrp), NULL);
242 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
243 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
244 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
246 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
248 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
256 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
257 const char *family, const char *group)
261 struct family_data res = { group, -ENOENT };
266 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
267 0, 0, CTRL_CMD_GETFAMILY, 0);
268 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
270 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
282 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
283 const char *ifname, u8 *addr)
287 os_memset(&ifr, 0, sizeof(ifr));
288 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
289 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
290 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
291 ifname, errno, strerror(errno));
295 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
296 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
297 ifname, ifr.ifr_hwaddr.sa_family);
300 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
306 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
307 const char *ifname, const u8 *addr)
311 os_memset(&ifr, 0, sizeof(ifr));
312 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
313 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
314 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
316 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
317 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
318 ifname, errno, strerror(errno));
329 static int wpa_driver_nl80211_send_oper_ifla(
330 struct wpa_driver_nl80211_data *drv,
331 int linkmode, int operstate)
335 struct ifinfomsg ifinfo;
342 os_memset(&req, 0, sizeof(req));
344 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
345 req.hdr.nlmsg_type = RTM_SETLINK;
346 req.hdr.nlmsg_flags = NLM_F_REQUEST;
347 req.hdr.nlmsg_seq = ++nl_seq;
348 req.hdr.nlmsg_pid = 0;
350 req.ifinfo.ifi_family = AF_UNSPEC;
351 req.ifinfo.ifi_type = 0;
352 req.ifinfo.ifi_index = drv->ifindex;
353 req.ifinfo.ifi_flags = 0;
354 req.ifinfo.ifi_change = 0;
356 if (linkmode != -1) {
357 rta = (struct rtattr *)
358 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
359 rta->rta_type = IFLA_LINKMODE;
360 rta->rta_len = RTA_LENGTH(sizeof(char));
361 *((char *) RTA_DATA(rta)) = linkmode;
362 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
363 RTA_LENGTH(sizeof(char));
365 if (operstate != -1) {
366 rta = (struct rtattr *)
367 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
368 rta->rta_type = IFLA_OPERSTATE;
369 rta->rta_len = RTA_LENGTH(sizeof(char));
370 *((char *) RTA_DATA(rta)) = operstate;
371 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
372 RTA_LENGTH(sizeof(char));
375 wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
376 linkmode, operstate);
378 ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
380 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
381 " %s (assume operstate is not supported)",
385 return ret < 0 ? -1 : 0;
390 static int wpa_driver_nl80211_set_auth_param(
391 struct wpa_driver_nl80211_data *drv, int idx, u32 value)
396 os_memset(&iwr, 0, sizeof(iwr));
397 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
398 iwr.u.param.flags = idx & IW_AUTH_INDEX;
399 iwr.u.param.value = value;
401 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
402 if (errno != EOPNOTSUPP) {
403 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
404 "value 0x%x) failed: %s)",
405 idx, value, strerror(errno));
407 ret = errno == EOPNOTSUPP ? -2 : -1;
415 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
417 struct wpa_driver_nl80211_data *drv = priv;
418 if (!drv->associated)
420 os_memcpy(bssid, drv->bssid, ETH_ALEN);
425 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
427 struct wpa_driver_nl80211_data *drv = priv;
428 if (!drv->associated)
430 os_memcpy(ssid, drv->ssid, drv->ssid_len);
431 return drv->ssid_len;
435 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
436 void *ctx, char *buf, size_t len,
439 union wpa_event_data event;
441 os_memset(&event, 0, sizeof(event));
442 if (len > sizeof(event.interface_status.ifname))
443 len = sizeof(event.interface_status.ifname) - 1;
444 os_memcpy(event.interface_status.ifname, buf, len);
445 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
446 EVENT_INTERFACE_ADDED;
448 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
450 event.interface_status.ifname,
451 del ? "removed" : "added");
453 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
460 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
464 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
467 struct ifinfomsg *ifi;
468 int attrlen, _nlmsg_len, rta_len;
473 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
475 attrlen = h->nlmsg_len - _nlmsg_len;
479 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
481 rta_len = RTA_ALIGN(sizeof(struct rtattr));
482 while (RTA_OK(attr, attrlen)) {
483 if (attr->rta_type == IFLA_IFNAME) {
484 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
490 attr = RTA_NEXT(attr, attrlen);
497 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
498 int ifindex, struct nlmsghdr *h)
500 if (drv->ifindex == ifindex)
503 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
504 drv->ifindex = if_nametoindex(drv->ifname);
505 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
507 wpa_driver_nl80211_finish_drv_init(drv);
515 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
516 void *ctx, struct nlmsghdr *h,
519 struct ifinfomsg *ifi;
520 int attrlen, _nlmsg_len, rta_len;
521 struct rtattr * attr;
523 if (len < sizeof(*ifi))
528 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
529 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
534 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
536 drv->operstate, ifi->ifi_flags,
537 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
538 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
539 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
540 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
542 * Some drivers send the association event before the operup event--in
543 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
544 * fails. This will hit us when wpa_supplicant does not need to do
545 * IEEE 802.1X authentication
547 if (drv->operstate == 1 &&
548 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
549 !(ifi->ifi_flags & IFF_RUNNING))
550 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
552 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
554 attrlen = h->nlmsg_len - _nlmsg_len;
558 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
560 rta_len = RTA_ALIGN(sizeof(struct rtattr));
561 while (RTA_OK(attr, attrlen)) {
562 if (attr->rta_type == IFLA_IFNAME) {
563 wpa_driver_nl80211_event_link(
565 ((char *) attr) + rta_len,
566 attr->rta_len - rta_len, 0);
568 attr = RTA_NEXT(attr, attrlen);
573 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
574 void *ctx, struct nlmsghdr *h,
577 struct ifinfomsg *ifi;
578 int attrlen, _nlmsg_len, rta_len;
579 struct rtattr * attr;
581 if (len < sizeof(*ifi))
586 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
588 attrlen = h->nlmsg_len - _nlmsg_len;
592 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
594 rta_len = RTA_ALIGN(sizeof(struct rtattr));
595 while (RTA_OK(attr, attrlen)) {
596 if (attr->rta_type == IFLA_IFNAME) {
597 wpa_driver_nl80211_event_link(
599 ((char *) attr) + rta_len,
600 attr->rta_len - rta_len, 1);
602 attr = RTA_NEXT(attr, attrlen);
607 static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
612 struct sockaddr_nl from;
618 fromlen = sizeof(from);
619 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
620 (struct sockaddr *) &from, &fromlen);
622 if (errno != EINTR && errno != EAGAIN)
623 perror("recvfrom(netlink)");
627 h = (struct nlmsghdr *) buf;
628 while (left >= (int) sizeof(*h)) {
632 plen = len - sizeof(*h);
633 if (len > left || plen < 0) {
634 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
635 "len=%d left=%d plen=%d",
640 switch (h->nlmsg_type) {
642 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
646 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
651 len = NLMSG_ALIGN(len);
653 h = (struct nlmsghdr *) ((char *) h + len);
657 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
661 if (--max_events > 0) {
663 * Try to receive all events in one eloop call in order to
664 * limit race condition on cases where AssocInfo event, Assoc
665 * event, and EAPOL frames are received more or less at the
666 * same time. We want to process the event messages first
667 * before starting EAPOL processing.
674 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
675 const u8 *frame, size_t len)
677 const struct ieee80211_mgmt *mgmt;
678 union wpa_event_data event;
680 mgmt = (const struct ieee80211_mgmt *) frame;
681 if (len < 24 + sizeof(mgmt->u.auth)) {
682 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
687 os_memset(&event, 0, sizeof(event));
688 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
689 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
690 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
691 if (len > 24 + sizeof(mgmt->u.auth)) {
692 event.auth.ies = mgmt->u.auth.variable;
693 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
696 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
700 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
701 const u8 *frame, size_t len)
703 const struct ieee80211_mgmt *mgmt;
704 union wpa_event_data event;
707 mgmt = (const struct ieee80211_mgmt *) frame;
708 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
709 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
714 status = le_to_host16(mgmt->u.assoc_resp.status_code);
715 if (status != WLAN_STATUS_SUCCESS) {
716 os_memset(&event, 0, sizeof(event));
717 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
718 event.assoc_reject.resp_ies =
719 (u8 *) mgmt->u.assoc_resp.variable;
720 event.assoc_reject.resp_ies_len =
721 len - 24 - sizeof(mgmt->u.assoc_resp);
723 event.assoc_reject.status_code = status;
725 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
730 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
732 os_memset(&event, 0, sizeof(event));
733 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
734 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
735 event.assoc_info.resp_ies_len =
736 len - 24 - sizeof(mgmt->u.assoc_resp);
739 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
743 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
744 enum nl80211_commands cmd, struct nlattr *addr)
746 union wpa_event_data event;
747 enum wpa_event_type ev;
749 if (nla_len(addr) != ETH_ALEN)
752 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
753 cmd, MAC2STR((u8 *) nla_data(addr)));
755 if (cmd == NL80211_CMD_AUTHENTICATE)
756 ev = EVENT_AUTH_TIMED_OUT;
757 else if (cmd == NL80211_CMD_ASSOCIATE)
758 ev = EVENT_ASSOC_TIMED_OUT;
762 os_memset(&event, 0, sizeof(event));
763 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
764 wpa_supplicant_event(drv->ctx, ev, &event);
768 static void mlme_event(struct wpa_driver_nl80211_data *drv,
769 enum nl80211_commands cmd, struct nlattr *frame,
770 struct nlattr *addr, struct nlattr *timed_out)
772 if (timed_out && addr) {
773 mlme_timeout_event(drv, cmd, addr);
778 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
783 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
784 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
785 nla_data(frame), nla_len(frame));
788 case NL80211_CMD_AUTHENTICATE:
789 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
791 case NL80211_CMD_ASSOCIATE:
792 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
794 case NL80211_CMD_DEAUTHENTICATE:
796 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
798 case NL80211_CMD_DISASSOCIATE:
800 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
810 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
813 union wpa_event_data data;
815 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
816 os_memset(&data, 0, sizeof(data));
817 if (tb[NL80211_ATTR_MAC]) {
818 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
819 nla_data(tb[NL80211_ATTR_MAC]),
820 nla_len(tb[NL80211_ATTR_MAC]));
821 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
823 if (tb[NL80211_ATTR_KEY_SEQ]) {
824 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
825 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
826 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
828 if (tb[NL80211_ATTR_KEY_TYPE]) {
829 enum nl80211_key_type key_type =
830 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
831 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
832 if (key_type == NL80211_KEYTYPE_PAIRWISE)
833 data.michael_mic_failure.unicast = 1;
835 data.michael_mic_failure.unicast = 1;
837 if (tb[NL80211_ATTR_KEY_IDX]) {
838 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
839 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
842 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
846 static int process_event(struct nl_msg *msg, void *arg)
848 struct wpa_driver_nl80211_data *drv = arg;
849 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
850 struct nlattr *tb[NL80211_ATTR_MAX + 1];
852 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
853 genlmsg_attrlen(gnlh, 0), NULL);
855 if (tb[NL80211_ATTR_IFINDEX]) {
856 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
857 if (ifindex != drv->ifindex) {
858 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
859 " for foreign interface (ifindex %d)",
865 if (drv->ap_scan_as_station &&
866 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
867 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
868 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
869 drv->ap_scan_as_station = 0;
873 case NL80211_CMD_NEW_SCAN_RESULTS:
874 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
875 drv->scan_complete_events = 1;
876 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
878 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
880 case NL80211_CMD_SCAN_ABORTED:
881 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
883 * Need to indicate that scan results are available in order
884 * not to make wpa_supplicant stop its scanning.
886 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
888 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
891 case NL80211_CMD_AUTHENTICATE:
892 case NL80211_CMD_ASSOCIATE:
893 case NL80211_CMD_DEAUTHENTICATE:
894 case NL80211_CMD_DISASSOCIATE:
895 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
896 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
899 case NL80211_CMD_MICHAEL_MIC_FAILURE:
900 mlme_event_michael_mic_failure(drv, tb);
903 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
904 "(cmd=%d)", gnlh->cmd);
912 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
916 struct wpa_driver_nl80211_data *drv = eloop_ctx;
918 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
920 cb = nl_cb_clone(drv->nl_cb);
923 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
924 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
925 nl_recvmsgs(drv->nl_handle, cb);
930 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
931 const char *ifname, int dev_up)
935 if (drv->ioctl_sock < 0)
938 os_memset(&ifr, 0, sizeof(ifr));
939 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
941 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
942 perror("ioctl[SIOCGIFFLAGS]");
943 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
949 if (ifr.ifr_flags & IFF_UP)
951 ifr.ifr_flags |= IFF_UP;
953 if (!(ifr.ifr_flags & IFF_UP))
955 ifr.ifr_flags &= ~IFF_UP;
958 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
959 perror("ioctl[SIOCSIFFLAGS]");
968 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
969 * @priv: driver_nl80211 private data
970 * @alpha2_arg: country to which to switch to
971 * Returns: 0 on success, -1 on failure
973 * This asks nl80211 to set the regulatory domain for given
974 * country ISO / IEC alpha2.
976 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
978 struct wpa_driver_nl80211_data *drv = priv;
986 alpha2[0] = alpha2_arg[0];
987 alpha2[1] = alpha2_arg[1];
990 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
991 0, NL80211_CMD_REQ_SET_REG, 0);
993 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
994 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1003 struct wiphy_info_data {
1009 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1011 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1012 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1013 struct wiphy_info_data *info = arg;
1015 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1016 genlmsg_attrlen(gnlh, 0), NULL);
1018 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1019 info->max_scan_ssids =
1020 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1022 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1023 struct nlattr *nl_mode;
1025 nla_for_each_nested(nl_mode,
1026 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1027 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1028 info->ap_supported = 1;
1038 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1039 struct wiphy_info_data *info)
1043 os_memset(info, 0, sizeof(*info));
1044 msg = nlmsg_alloc();
1048 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1049 0, NL80211_CMD_GET_WIPHY, 0);
1051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1053 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1062 static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1064 struct wiphy_info_data info;
1065 if (wpa_driver_nl80211_get_info(drv, &info))
1067 drv->has_capability = 1;
1068 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1069 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1070 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1071 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1072 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1073 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1074 WPA_DRIVER_CAPA_ENC_WEP104 |
1075 WPA_DRIVER_CAPA_ENC_TKIP |
1076 WPA_DRIVER_CAPA_ENC_CCMP;
1078 drv->capa.max_scan_ssids = info.max_scan_ssids;
1079 if (info.ap_supported)
1080 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1082 #endif /* HOSTAPD */
1085 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1090 /* Initialize generic netlink and nl80211 */
1092 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1093 if (drv->nl_cb == NULL) {
1094 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1099 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1100 if (drv->nl_handle == NULL) {
1101 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1106 if (genl_connect(drv->nl_handle)) {
1107 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1112 #ifdef CONFIG_LIBNL20
1113 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1114 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1118 #else /* CONFIG_LIBNL20 */
1119 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1120 if (drv->nl_cache == NULL) {
1121 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1125 #endif /* CONFIG_LIBNL20 */
1128 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1129 if (drv->nl80211 == NULL) {
1130 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1135 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1137 ret = nl_socket_add_membership(drv->nl_handle, ret);
1139 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1140 "membership for scan events: %d (%s)",
1141 ret, strerror(-ret));
1145 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1147 ret = nl_socket_add_membership(drv->nl_handle, ret);
1149 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1150 "membership for mlme events: %d (%s)",
1151 ret, strerror(-ret));
1155 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
1156 wpa_driver_nl80211_event_receive, drv, ctx);
1161 nl_cache_free(drv->nl_cache);
1163 nl_handle_destroy(drv->nl_handle);
1165 nl_cb_put(drv->nl_cb);
1171 static int wpa_driver_nl80211_init_link_events(
1172 struct wpa_driver_nl80211_data *drv)
1178 struct sockaddr_nl local;
1180 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1182 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1186 os_memset(&local, 0, sizeof(local));
1187 local.nl_family = AF_NETLINK;
1188 local.nl_groups = RTMGRP_LINK;
1189 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1190 perror("bind(netlink)");
1195 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
1197 drv->link_event_sock = s;
1200 #endif /* HOSTAPD */
1205 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1206 * @ctx: context to be used when calling wpa_supplicant functions,
1207 * e.g., wpa_supplicant_event()
1208 * @ifname: interface name, e.g., wlan0
1209 * Returns: Pointer to private data, %NULL on failure
1211 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1213 struct wpa_driver_nl80211_data *drv;
1215 drv = os_zalloc(sizeof(*drv));
1219 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1220 drv->monitor_ifidx = -1;
1221 drv->monitor_sock = -1;
1222 drv->link_event_sock = -1;
1223 drv->ioctl_sock = -1;
1225 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1230 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1232 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1233 if (drv->ioctl_sock < 0) {
1234 perror("socket(PF_INET,SOCK_DGRAM)");
1238 if (wpa_driver_nl80211_init_link_events(drv) ||
1239 wpa_driver_nl80211_finish_drv_init(drv))
1245 if (drv->link_event_sock >= 0) {
1246 eloop_unregister_read_sock(drv->link_event_sock);
1247 close(drv->link_event_sock);
1249 if (drv->ioctl_sock >= 0)
1250 close(drv->ioctl_sock);
1252 genl_family_put(drv->nl80211);
1253 nl_cache_free(drv->nl_cache);
1254 nl_handle_destroy(drv->nl_handle);
1255 nl_cb_put(drv->nl_cb);
1263 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1265 drv->ifindex = if_nametoindex(drv->ifname);
1268 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1269 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1270 "use managed mode");
1273 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1274 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1279 wpa_driver_nl80211_capa(drv);
1281 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1282 #endif /* HOSTAPD */
1289 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1291 struct i802_bss *bss, *prev;
1292 bss = drv->bss.next;
1299 #endif /* HOSTAPD */
1302 #if defined(CONFIG_AP) || defined(HOSTAPD)
1303 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1307 msg = nlmsg_alloc();
1311 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1312 0, NL80211_CMD_DEL_BEACON, 0);
1313 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1315 return send_and_recv_msgs(drv, msg, NULL, NULL);
1319 #endif /* CONFIG_AP || HOSTAPD */
1323 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1324 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1326 * Shut down driver interface and processing of driver events. Free
1327 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1329 static void wpa_driver_nl80211_deinit(void *priv)
1331 struct wpa_driver_nl80211_data *drv = priv;
1333 #if defined(CONFIG_AP) || defined(HOSTAPD)
1334 nl80211_remove_monitor_interface(drv);
1335 if (drv->monitor_sock >= 0) {
1336 eloop_unregister_read_sock(drv->monitor_sock);
1337 close(drv->monitor_sock);
1340 if (drv->nlmode == NL80211_IFTYPE_AP)
1341 wpa_driver_nl80211_del_beacon(drv);
1342 #endif /* CONFIG_AP || HOSTAPD */
1345 if (drv->last_freq_ht) {
1346 /* Clear HT flags from the driver */
1347 struct hostapd_freq_params freq;
1348 os_memset(&freq, 0, sizeof(freq));
1349 freq.freq = drv->last_freq;
1350 i802_set_freq(priv, &freq);
1353 if (drv->eapol_sock >= 0) {
1354 eloop_unregister_read_sock(drv->eapol_sock);
1355 close(drv->eapol_sock);
1358 if (drv->if_indices != drv->default_if_indices)
1359 os_free(drv->if_indices);
1361 wpa_driver_nl80211_free_bss(drv);
1364 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, 0);
1365 #endif /* NO_WEXT */
1367 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1369 if (drv->link_event_sock >= 0) {
1370 eloop_unregister_read_sock(drv->link_event_sock);
1371 close(drv->link_event_sock);
1373 #endif /* HOSTAPD */
1375 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1377 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1378 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1380 if (drv->ioctl_sock >= 0)
1381 close(drv->ioctl_sock);
1383 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
1384 genl_family_put(drv->nl80211);
1385 nl_cache_free(drv->nl_cache);
1386 nl_handle_destroy(drv->nl_handle);
1387 nl_cb_put(drv->nl_cb);
1394 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1395 * @eloop_ctx: Driver private data
1396 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1398 * This function can be used as registered timeout when starting a scan to
1399 * generate a scan completed event if the driver does not report this.
1401 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1403 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1404 if (drv->ap_scan_as_station) {
1405 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1406 drv->ap_scan_as_station = 0;
1408 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1409 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1414 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1415 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1416 * @params: Scan parameters
1417 * Returns: 0 on success, -1 on failure
1419 static int wpa_driver_nl80211_scan(void *priv,
1420 struct wpa_driver_scan_params *params)
1422 struct wpa_driver_nl80211_data *drv = priv;
1423 int ret = 0, timeout;
1424 struct nl_msg *msg, *ssids, *freqs;
1427 msg = nlmsg_alloc();
1428 ssids = nlmsg_alloc();
1429 freqs = nlmsg_alloc();
1430 if (!msg || !ssids || !freqs) {
1437 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1438 NL80211_CMD_TRIGGER_SCAN, 0);
1440 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1442 for (i = 0; i < params->num_ssids; i++) {
1443 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1444 params->ssids[i].ssid);
1446 if (params->num_ssids)
1447 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1449 if (params->extra_ies) {
1450 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1454 if (params->freqs) {
1455 for (i = 0; params->freqs[i]; i++)
1456 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1457 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1460 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1463 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1464 "(%s)", ret, strerror(-ret));
1466 if (drv->nlmode == NL80211_IFTYPE_AP) {
1468 * mac80211 does not allow scan requests in AP mode, so
1469 * try to do this in station mode.
1471 if (wpa_driver_nl80211_set_mode(drv,
1472 IEEE80211_MODE_INFRA))
1473 goto nla_put_failure;
1475 if (wpa_driver_nl80211_scan(drv, params)) {
1476 wpa_driver_nl80211_set_mode(drv,
1478 goto nla_put_failure;
1481 /* Restore AP mode when processing scan results */
1482 drv->ap_scan_as_station = 1;
1485 goto nla_put_failure;
1487 goto nla_put_failure;
1488 #endif /* HOSTAPD */
1491 /* Not all drivers generate "scan completed" wireless event, so try to
1492 * read results after a timeout. */
1494 if (drv->scan_complete_events) {
1496 * The driver seems to deliver events to notify when scan is
1497 * complete, so use longer timeout to avoid race conditions
1498 * with scanning and following association request.
1502 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1503 "seconds", ret, timeout);
1504 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1505 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1516 static int bss_info_handler(struct nl_msg *msg, void *arg)
1518 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1519 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1520 struct nlattr *bss[NL80211_BSS_MAX + 1];
1521 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1522 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1523 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1524 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1525 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1526 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1527 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1528 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1529 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1531 struct wpa_scan_results *res = arg;
1532 struct wpa_scan_res **tmp;
1533 struct wpa_scan_res *r;
1537 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1538 genlmsg_attrlen(gnlh, 0), NULL);
1539 if (!tb[NL80211_ATTR_BSS])
1541 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1544 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1545 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1546 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1552 r = os_zalloc(sizeof(*r) + ie_len);
1555 if (bss[NL80211_BSS_BSSID])
1556 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1558 if (bss[NL80211_BSS_FREQUENCY])
1559 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1560 if (bss[NL80211_BSS_BEACON_INTERVAL])
1561 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1562 if (bss[NL80211_BSS_CAPABILITY])
1563 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1564 r->flags |= WPA_SCAN_NOISE_INVALID;
1565 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1566 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1567 r->level /= 100; /* mBm to dBm */
1568 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1569 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1570 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1571 r->flags |= WPA_SCAN_LEVEL_INVALID;
1573 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1574 if (bss[NL80211_BSS_TSF])
1575 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1578 os_memcpy(r + 1, ie, ie_len);
1580 tmp = os_realloc(res->res,
1581 (res->num + 1) * sizeof(struct wpa_scan_res *));
1586 tmp[res->num++] = r;
1594 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1595 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1596 * Returns: Scan results on success, -1 on failure
1598 static struct wpa_scan_results *
1599 wpa_driver_nl80211_get_scan_results(void *priv)
1601 struct wpa_driver_nl80211_data *drv = priv;
1603 struct wpa_scan_results *res;
1606 res = os_zalloc(sizeof(*res));
1609 msg = nlmsg_alloc();
1611 goto nla_put_failure;
1613 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1614 NL80211_CMD_GET_SCAN, 0);
1615 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1617 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1620 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1621 (unsigned long) res->num);
1624 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1625 "(%s)", ret, strerror(-ret));
1628 wpa_scan_results_free(res);
1633 static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
1634 wpa_alg alg, const u8 *addr, int key_idx, int set_tx,
1635 const u8 *seq, size_t seq_len,
1636 const u8 *key, size_t key_len)
1641 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1642 "set_tx=%d seq_len=%lu key_len=%lu",
1643 __func__, ifindex, alg, addr, key_idx, set_tx,
1644 (unsigned long) seq_len, (unsigned long) key_len);
1646 msg = nlmsg_alloc();
1650 if (alg == WPA_ALG_NONE) {
1651 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1652 0, NL80211_CMD_DEL_KEY, 0);
1654 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1655 0, NL80211_CMD_NEW_KEY, 0);
1656 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1660 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1663 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1667 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
1670 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
1673 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
1676 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1677 "algorithm %d", __func__, alg);
1684 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1686 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1688 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1689 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1691 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1692 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1694 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1695 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1698 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1699 ret, strerror(-ret));
1702 * If we failed or don't need to set the default TX key (below),
1705 if (ret || !set_tx || alg == WPA_ALG_NONE)
1707 #ifdef HOSTAPD /* FIX: is this needed? */
1710 #endif /* HOSTAPD */
1712 msg = nlmsg_alloc();
1716 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1717 0, NL80211_CMD_SET_KEY, 0);
1718 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1719 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1720 if (alg == WPA_ALG_IGTK)
1721 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1723 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1725 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1729 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1730 "err=%d %s)", ret, strerror(-ret));
1740 static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
1741 const u8 *addr, int key_idx,
1742 int set_tx, const u8 *seq,
1744 const u8 *key, size_t key_len)
1746 struct wpa_driver_nl80211_data *drv = priv;
1747 return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
1748 seq_len, key, key_len);
1752 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1753 const u8 *addr, int cmd, u16 reason_code)
1758 msg = nlmsg_alloc();
1762 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1765 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1766 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1768 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1771 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1772 "(%s)", ret, strerror(-ret));
1773 goto nla_put_failure;
1783 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1786 struct wpa_driver_nl80211_data *drv = priv;
1787 wpa_printf(MSG_DEBUG, "%s", __func__);
1788 drv->associated = 0;
1789 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1794 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
1797 struct wpa_driver_nl80211_data *drv = priv;
1798 wpa_printf(MSG_DEBUG, "%s", __func__);
1799 drv->associated = 0;
1800 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1805 static int wpa_driver_nl80211_authenticate(
1806 void *priv, struct wpa_driver_auth_params *params)
1808 struct wpa_driver_nl80211_data *drv = priv;
1811 enum nl80211_auth_type type;
1813 drv->associated = 0;
1815 msg = nlmsg_alloc();
1819 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1822 for (i = 0; i < 4; i++) {
1823 if (!params->wep_key[i])
1825 wpa_driver_nl80211_set_key(drv, WPA_ALG_WEP, NULL, i,
1826 i == params->wep_tx_keyidx, NULL, 0,
1828 params->wep_key_len[i]);
1831 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1832 NL80211_CMD_AUTHENTICATE, 0);
1834 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1835 if (params->bssid) {
1836 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
1837 MAC2STR(params->bssid));
1838 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1841 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
1842 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1845 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
1846 params->ssid, params->ssid_len);
1847 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1850 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
1852 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1854 * TODO: if multiple auth_alg options enabled, try them one by one if
1855 * the AP rejects authentication due to unknown auth alg
1857 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
1858 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1859 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
1860 type = NL80211_AUTHTYPE_SHARED_KEY;
1861 else if (params->auth_alg & AUTH_ALG_LEAP)
1862 type = NL80211_AUTHTYPE_NETWORK_EAP;
1863 else if (params->auth_alg & AUTH_ALG_FT)
1864 type = NL80211_AUTHTYPE_FT;
1866 goto nla_put_failure;
1867 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
1868 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
1870 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1873 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1874 "(%s)", ret, strerror(-ret));
1875 goto nla_put_failure;
1878 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
1886 #endif /* HOSTAPD */
1889 #if defined(CONFIG_AP) || defined(HOSTAPD)
1891 struct phy_info_arg {
1893 struct hostapd_hw_modes *modes;
1896 static int phy_info_handler(struct nl_msg *msg, void *arg)
1898 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1899 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1900 struct phy_info_arg *phy_info = arg;
1902 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1904 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1905 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1906 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1907 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1908 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1909 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1910 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1911 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1914 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1915 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1916 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1917 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1920 struct nlattr *nl_band;
1921 struct nlattr *nl_freq;
1922 struct nlattr *nl_rate;
1923 int rem_band, rem_freq, rem_rate;
1924 struct hostapd_hw_modes *mode;
1925 int idx, mode_is_set;
1927 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1928 genlmsg_attrlen(gnlh, 0), NULL);
1930 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1933 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1934 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1937 phy_info->modes = mode;
1941 mode = &phy_info->modes[*(phy_info->num_modes)];
1942 memset(mode, 0, sizeof(*mode));
1943 *(phy_info->num_modes) += 1;
1945 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1946 nla_len(nl_band), NULL);
1948 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
1949 mode->ht_capab = nla_get_u16(
1950 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
1953 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1954 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1955 nla_len(nl_freq), freq_policy);
1956 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1958 mode->num_channels++;
1961 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1962 if (!mode->channels)
1967 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1968 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1969 nla_len(nl_freq), freq_policy);
1970 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1973 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1974 mode->channels[idx].flag = 0;
1977 /* crude heuristic */
1978 if (mode->channels[idx].freq < 4000)
1979 mode->mode = HOSTAPD_MODE_IEEE80211B;
1981 mode->mode = HOSTAPD_MODE_IEEE80211A;
1985 /* crude heuristic */
1986 if (mode->channels[idx].freq < 4000)
1987 if (mode->channels[idx].freq == 2484)
1988 mode->channels[idx].chan = 14;
1990 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1992 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1994 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1995 mode->channels[idx].flag |=
1996 HOSTAPD_CHAN_DISABLED;
1997 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1998 mode->channels[idx].flag |=
1999 HOSTAPD_CHAN_PASSIVE_SCAN;
2000 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2001 mode->channels[idx].flag |=
2002 HOSTAPD_CHAN_NO_IBSS;
2003 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2004 mode->channels[idx].flag |=
2007 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2008 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2009 mode->channels[idx].max_tx_power =
2010 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2015 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2016 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2017 nla_len(nl_rate), rate_policy);
2018 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2023 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
2029 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2030 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2031 nla_len(nl_rate), rate_policy);
2032 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2034 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2036 /* crude heuristic */
2037 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2038 mode->rates[idx].rate > 200)
2039 mode->mode = HOSTAPD_MODE_IEEE80211G;
2041 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
2042 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2051 static struct hostapd_hw_modes *
2052 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2055 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2056 int i, mode11g_idx = -1;
2058 /* If only 802.11g mode is included, use it to construct matching
2059 * 802.11b mode data. */
2061 for (m = 0; m < *num_modes; m++) {
2062 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2063 return modes; /* 802.11b already included */
2064 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2068 if (mode11g_idx < 0)
2069 return modes; /* 2.4 GHz band not supported at all */
2071 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2073 return modes; /* Could not add 802.11b mode */
2075 mode = &nmodes[*num_modes];
2076 os_memset(mode, 0, sizeof(*mode));
2080 mode->mode = HOSTAPD_MODE_IEEE80211B;
2082 mode11g = &modes[mode11g_idx];
2083 mode->num_channels = mode11g->num_channels;
2084 mode->channels = os_malloc(mode11g->num_channels *
2085 sizeof(struct hostapd_channel_data));
2086 if (mode->channels == NULL) {
2088 return modes; /* Could not add 802.11b mode */
2090 os_memcpy(mode->channels, mode11g->channels,
2091 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2093 mode->num_rates = 0;
2094 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2095 if (mode->rates == NULL) {
2096 os_free(mode->channels);
2098 return modes; /* Could not add 802.11b mode */
2101 for (i = 0; i < mode11g->num_rates; i++) {
2102 if (mode11g->rates[i].rate > 110 ||
2103 mode11g->rates[i].flags &
2104 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2106 mode->rates[mode->num_rates] = mode11g->rates[i];
2108 if (mode->num_rates == 4)
2112 if (mode->num_rates == 0) {
2113 os_free(mode->channels);
2114 os_free(mode->rates);
2116 return modes; /* No 802.11b rates */
2119 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2126 static struct hostapd_hw_modes *
2127 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2129 struct wpa_driver_nl80211_data *drv = priv;
2131 struct phy_info_arg result = {
2132 .num_modes = num_modes,
2139 msg = nlmsg_alloc();
2143 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2144 0, NL80211_CMD_GET_WIPHY, 0);
2146 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2148 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2149 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2155 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2156 const void *data, size_t len,
2160 0x00, 0x00, /* radiotap version */
2161 0x0e, 0x00, /* radiotap length */
2162 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2163 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2165 0x00, 0x00, /* RX and TX flags to indicate that */
2166 0x00, 0x00, /* this is the injected frame directly */
2168 struct iovec iov[2] = {
2170 .iov_base = &rtap_hdr,
2171 .iov_len = sizeof(rtap_hdr),
2174 .iov_base = (void *) data,
2178 struct msghdr msg = {
2183 .msg_control = NULL,
2184 .msg_controllen = 0,
2189 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2191 return sendmsg(drv->monitor_sock, &msg, 0);
2195 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2198 struct wpa_driver_nl80211_data *drv = priv;
2199 struct ieee80211_mgmt *mgmt;
2200 int do_not_encrypt = 0;
2203 mgmt = (struct ieee80211_mgmt *) data;
2204 fc = le_to_host16(mgmt->frame_control);
2206 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2207 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2209 * Only one of the authentication frame types is encrypted.
2210 * In order for static WEP encryption to work properly (i.e.,
2211 * to not encrypt the frame), we need to tell mac80211 about
2212 * the frames that must not be encrypted.
2214 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2215 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2216 if (auth_alg == WLAN_AUTH_OPEN ||
2217 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
2221 return wpa_driver_nl80211_send_frame(drv, data, data_len,
2226 static int wpa_driver_nl80211_set_beacon_iface(int ifindex, void *priv,
2227 const u8 *head, size_t head_len,
2228 const u8 *tail, size_t tail_len,
2231 struct wpa_driver_nl80211_data *drv = priv;
2233 u8 cmd = NL80211_CMD_NEW_BEACON;
2237 struct i802_bss *bss;
2239 bss = get_bss(drv, ifindex);
2242 beacon_set = bss->beacon_set;
2244 beacon_set = drv->beacon_set;
2245 #endif /* HOSTAPD */
2247 msg = nlmsg_alloc();
2251 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2254 cmd = NL80211_CMD_SET_BEACON;
2256 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2258 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2259 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2261 if (!drv->beacon_int)
2262 drv->beacon_int = 100;
2263 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
2264 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2266 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2268 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2269 ret, strerror(-ret));
2272 bss->beacon_set = 1;
2274 drv->beacon_set = 1;
2275 #endif /* HOSTAPD */
2283 static int wpa_driver_nl80211_set_beacon_int(void *priv, int value)
2285 struct wpa_driver_nl80211_data *drv = priv;
2288 drv->beacon_int = value;
2291 if (!drv->bss.beacon_set)
2294 if (!drv->beacon_set)
2296 #endif /* HOSTAPD */
2298 msg = nlmsg_alloc();
2302 wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d", value);
2303 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2304 0, NL80211_CMD_SET_BEACON, 0);
2305 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2307 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
2309 return send_and_recv_msgs(drv, msg, NULL, NULL);
2315 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2316 int freq, int ht_enabled,
2317 int sec_channel_offset)
2322 msg = nlmsg_alloc();
2326 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2327 NL80211_CMD_SET_WIPHY, 0);
2329 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2330 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2332 switch (sec_channel_offset) {
2334 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2335 NL80211_CHAN_HT40MINUS);
2338 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2339 NL80211_CHAN_HT40PLUS);
2342 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2348 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2351 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2352 "%d (%s)", freq, ret, strerror(-ret));
2358 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2359 struct hostapd_sta_add_params *params)
2361 struct wpa_driver_nl80211_data *drv = priv;
2365 msg = nlmsg_alloc();
2369 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2370 0, NL80211_CMD_NEW_STATION, 0);
2372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2373 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2374 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2375 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2376 params->supp_rates);
2377 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2378 params->listen_interval);
2380 #ifdef CONFIG_IEEE80211N
2381 if (params->ht_capabilities) {
2382 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2383 params->ht_capabilities->length,
2384 ¶ms->ht_capabilities->data);
2386 #endif /* CONFIG_IEEE80211N */
2388 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2390 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2391 "result: %d (%s)", ret, strerror(-ret));
2399 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2401 struct wpa_driver_nl80211_data *drv = priv;
2405 msg = nlmsg_alloc();
2409 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2410 0, NL80211_CMD_DEL_STATION, 0);
2412 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2413 if_nametoindex(drv->ifname));
2414 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2416 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2424 #endif /* CONFIG_AP || HOSTAPD */
2429 static int wpa_driver_nl80211_set_beacon(void *priv,
2430 const u8 *head, size_t head_len,
2431 const u8 *tail, size_t tail_len,
2434 struct wpa_driver_nl80211_data *drv = priv;
2435 return wpa_driver_nl80211_set_beacon_iface(drv->ifindex, priv,
2441 #endif /* CONFIG_AP */
2443 #if defined(CONFIG_AP) || defined(HOSTAPD)
2445 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2451 /* stop listening for EAPOL on this interface */
2452 del_ifidx(drv, ifidx);
2453 #endif /* HOSTAPD */
2455 msg = nlmsg_alloc();
2457 goto nla_put_failure;
2459 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2460 0, NL80211_CMD_DEL_INTERFACE, 0);
2461 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2463 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2466 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2471 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2472 const char *ifname, enum nl80211_iftype iftype,
2475 struct nl_msg *msg, *flags = NULL;
2479 msg = nlmsg_alloc();
2483 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2484 0, NL80211_CMD_NEW_INTERFACE, 0);
2485 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2486 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2487 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2489 if (iftype == NL80211_IFTYPE_MONITOR) {
2492 flags = nlmsg_alloc();
2494 goto nla_put_failure;
2496 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2498 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2503 goto nla_put_failure;
2506 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2509 wpa_printf(MSG_ERROR, "Failed to create interface %s.",
2514 ifidx = if_nametoindex(ifname);
2520 /* start listening for EAPOL on this interface */
2521 add_ifidx(drv, ifidx);
2523 if (addr && iftype == NL80211_IFTYPE_AP &&
2524 set_ifhwaddr(drv, ifname, addr)) {
2525 nl80211_remove_iface(drv, ifidx);
2528 #endif /* HOSTAPD */
2533 #endif /* CONFIG_AP || HOSTAPD */
2537 void ap_tx_status(void *ctx, const u8 *addr,
2538 const u8 *buf, size_t len, int ack);
2539 void ap_rx_from_unknown_sta(void *ctx, const u8 *addr);
2540 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2541 struct hostapd_frame_info *fi);
2542 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2544 #endif /* CONFIG_AP */
2546 #if defined(CONFIG_AP) || defined(HOSTAPD)
2548 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2550 struct ieee80211_hdr *hdr;
2551 u16 fc, type, stype;
2553 hdr = (struct ieee80211_hdr *) buf;
2554 fc = le_to_host16(hdr->frame_control);
2556 type = WLAN_FC_GET_TYPE(fc);
2557 stype = WLAN_FC_GET_STYPE(fc);
2560 case WLAN_FC_TYPE_MGMT:
2561 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2562 ok ? "ACK" : "fail");
2564 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2566 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
2567 #endif /* HOSTAPD */
2569 case WLAN_FC_TYPE_CTRL:
2570 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2571 ok ? "ACK" : "fail");
2573 case WLAN_FC_TYPE_DATA:
2575 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2577 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
2578 #endif /* HOSTAPD */
2581 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2588 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2589 struct ieee80211_hdr *hdr, size_t len)
2592 hostapd_rx_from_unknown_sta(drv->ctx, hdr, len);
2594 ap_rx_from_unknown_sta(drv->ctx, hdr->addr2);
2595 #endif /* HOSTAPD */
2599 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2600 u8 *buf, size_t len,
2601 struct hostapd_frame_info *hfi)
2603 struct ieee80211_hdr *hdr;
2606 hdr = (struct ieee80211_hdr *) buf;
2607 fc = le_to_host16(hdr->frame_control);
2608 stype = WLAN_FC_GET_STYPE(fc);
2610 switch (WLAN_FC_GET_TYPE(fc)) {
2611 case WLAN_FC_TYPE_MGMT:
2612 if (stype != WLAN_FC_STYPE_BEACON &&
2613 stype != WLAN_FC_STYPE_PROBE_REQ)
2614 wpa_printf(MSG_MSGDUMP, "MGMT");
2616 hostapd_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2618 ap_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2619 #endif /* HOSTAPD */
2621 case WLAN_FC_TYPE_CTRL:
2622 /* can only get here with PS-Poll frames */
2623 wpa_printf(MSG_DEBUG, "CTRL");
2624 from_unknown_sta(drv, hdr, len);
2626 case WLAN_FC_TYPE_DATA:
2627 from_unknown_sta(drv, hdr, len);
2633 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2635 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2637 unsigned char buf[3000];
2638 struct ieee80211_radiotap_iterator iter;
2640 struct hostapd_frame_info hfi;
2641 int injected = 0, failed = 0, rxflags = 0;
2643 len = recv(sock, buf, sizeof(buf), 0);
2649 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2650 printf("received invalid radiotap frame\n");
2654 memset(&hfi, 0, sizeof(hfi));
2657 ret = ieee80211_radiotap_iterator_next(&iter);
2661 printf("received invalid radiotap frame (%d)\n", ret);
2664 switch (iter.this_arg_index) {
2665 case IEEE80211_RADIOTAP_FLAGS:
2666 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2669 case IEEE80211_RADIOTAP_RX_FLAGS:
2672 case IEEE80211_RADIOTAP_TX_FLAGS:
2674 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2675 IEEE80211_RADIOTAP_F_TX_FAIL;
2677 case IEEE80211_RADIOTAP_DATA_RETRIES:
2679 case IEEE80211_RADIOTAP_CHANNEL:
2680 /* TODO convert from freq/flags to channel number
2685 case IEEE80211_RADIOTAP_RATE:
2686 hfi.datarate = *iter.this_arg * 5;
2688 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2689 hfi.ssi_signal = *iter.this_arg;
2694 if (rxflags && injected)
2698 handle_frame(drv, buf + iter.max_length,
2699 len - iter.max_length, &hfi);
2701 handle_tx_callback(drv->ctx, buf + iter.max_length,
2702 len - iter.max_length, !failed);
2707 * we post-process the filter code later and rewrite
2708 * this to the offset to the last instruction
2713 static struct sock_filter msock_filter_insns[] = {
2715 * do a little-endian load of the radiotap length field
2717 /* load lower byte into A */
2718 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2719 /* put it into X (== index register) */
2720 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2721 /* load upper byte into A */
2722 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2723 /* left-shift it by 8 */
2724 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2726 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2727 /* put result into X */
2728 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2731 * Allow management frames through, this also gives us those
2732 * management frames that we sent ourselves with status
2734 /* load the lower byte of the IEEE 802.11 frame control field */
2735 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2736 /* mask off frame type and version */
2737 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2738 /* accept frame if it's both 0, fall through otherwise */
2739 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2742 * TODO: add a bit to radiotap RX flags that indicates
2743 * that the sending station is not associated, then
2744 * add a filter here that filters on our DA and that flag
2745 * to allow us to deauth frames to that bad station.
2747 * Not a regression -- we didn't do it before either.
2752 * drop non-data frames, WDS frames
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, 0x0c),
2758 /* drop non-data frames */
2759 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2760 /* load the upper byte of the frame control field */
2761 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2762 /* mask off toDS/fromDS */
2763 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2764 /* drop WDS frames */
2765 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2769 * add header length to index
2771 /* load the lower byte of the frame control field */
2772 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2773 /* mask off QoS bit */
2774 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2775 /* right shift it by 6 to give 0 or 2 */
2776 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2777 /* add data frame header length */
2778 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2779 /* add index, was start of 802.11 header */
2780 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2781 /* move to index, now start of LL header */
2782 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2785 * Accept empty data frames, we use those for
2788 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2789 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2792 * Accept EAPOL frames
2794 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2795 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2796 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2797 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2799 /* keep these last two statements or change the code below */
2800 /* return 0 == "DROP" */
2801 BPF_STMT(BPF_RET | BPF_K, 0),
2802 /* return ~0 == "keep all" */
2803 BPF_STMT(BPF_RET | BPF_K, ~0),
2806 static struct sock_fprog msock_filter = {
2807 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2808 .filter = msock_filter_insns,
2812 static int add_monitor_filter(int s)
2816 /* rewrite all PASS/FAIL jump offsets */
2817 for (idx = 0; idx < msock_filter.len; idx++) {
2818 struct sock_filter *insn = &msock_filter_insns[idx];
2820 if (BPF_CLASS(insn->code) == BPF_JMP) {
2821 if (insn->code == (BPF_JMP|BPF_JA)) {
2822 if (insn->k == PASS)
2823 insn->k = msock_filter.len - idx - 2;
2824 else if (insn->k == FAIL)
2825 insn->k = msock_filter.len - idx - 3;
2828 if (insn->jt == PASS)
2829 insn->jt = msock_filter.len - idx - 2;
2830 else if (insn->jt == FAIL)
2831 insn->jt = msock_filter.len - idx - 3;
2833 if (insn->jf == PASS)
2834 insn->jf = msock_filter.len - idx - 2;
2835 else if (insn->jf == FAIL)
2836 insn->jf = msock_filter.len - idx - 3;
2840 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2841 &msock_filter, sizeof(msock_filter))) {
2842 perror("SO_ATTACH_FILTER");
2850 static void nl80211_remove_monitor_interface(
2851 struct wpa_driver_nl80211_data *drv)
2853 if (drv->monitor_ifidx >= 0) {
2854 nl80211_remove_iface(drv, drv->monitor_ifidx);
2855 drv->monitor_ifidx = -1;
2861 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2864 struct sockaddr_ll ll;
2868 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2869 buf[IFNAMSIZ - 1] = '\0';
2871 drv->monitor_ifidx =
2872 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2874 if (drv->monitor_ifidx < 0)
2877 if (hostapd_set_iface_flags(drv, buf, 1))
2880 memset(&ll, 0, sizeof(ll));
2881 ll.sll_family = AF_PACKET;
2882 ll.sll_ifindex = drv->monitor_ifidx;
2883 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2884 if (drv->monitor_sock < 0) {
2885 perror("socket[PF_PACKET,SOCK_RAW]");
2889 if (add_monitor_filter(drv->monitor_sock)) {
2890 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2891 "interface; do filtering in user space");
2892 /* This works, but will cost in performance. */
2895 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
2896 perror("monitor socket bind");
2900 optlen = sizeof(optval);
2903 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2904 perror("Failed to set socket priority");
2908 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2910 printf("Could not register monitor read socket\n");
2916 nl80211_remove_monitor_interface(drv);
2921 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2923 static int wpa_driver_nl80211_hapd_send_eapol(
2924 void *priv, const u8 *addr, const u8 *data,
2925 size_t data_len, int encrypt, const u8 *own_addr)
2927 struct wpa_driver_nl80211_data *drv = priv;
2928 struct ieee80211_hdr *hdr;
2933 int qos = sta->flags & WLAN_STA_WME;
2938 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
2940 hdr = os_zalloc(len);
2942 printf("malloc() failed for i802_send_data(len=%lu)\n",
2943 (unsigned long) len);
2947 hdr->frame_control =
2948 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
2949 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
2951 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
2952 #if 0 /* To be enabled if qos determination is added above */
2954 hdr->frame_control |=
2955 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
2959 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
2960 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
2961 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
2962 pos = (u8 *) (hdr + 1);
2964 #if 0 /* To be enabled if qos determination is added above */
2966 /* add an empty QoS header if needed */
2973 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
2974 pos += sizeof(rfc1042_header);
2975 WPA_PUT_BE16(pos, ETH_P_PAE);
2977 memcpy(pos, data, data_len);
2979 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
2981 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
2983 (unsigned long) len, errno, strerror(errno));
2991 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
2992 int total_flags, int flags_or,
2995 struct wpa_driver_nl80211_data *drv = priv;
2996 struct nl_msg *msg, *flags = NULL;
2998 msg = nlmsg_alloc();
3002 flags = nlmsg_alloc();
3008 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3009 0, NL80211_CMD_SET_STATION, 0);
3011 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3012 if_nametoindex(drv->ifname));
3013 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3015 if (total_flags & WLAN_STA_AUTHORIZED)
3016 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3018 if (total_flags & WLAN_STA_WMM)
3019 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3021 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3022 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3024 if (total_flags & WLAN_STA_MFP)
3025 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3027 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3028 goto nla_put_failure;
3032 return send_and_recv_msgs(drv, msg, NULL, NULL);
3038 #endif /* CONFIG_AP || HOSTAPD */
3042 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3043 struct wpa_driver_associate_params *params)
3045 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3046 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3047 nl80211_remove_monitor_interface(drv);
3051 /* TODO: setup monitor interface (and add code somewhere to remove this
3052 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3056 #endif /* CONFIG_AP */
3060 static int wpa_driver_nl80211_associate(
3061 void *priv, struct wpa_driver_associate_params *params)
3063 struct wpa_driver_nl80211_data *drv = priv;
3068 if (params->mode == 2)
3069 return wpa_driver_nl80211_ap(drv, params);
3070 #endif /* CONFIG_AP */
3073 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
3074 params->drop_unencrypted);
3075 #endif /* NO_WEXT */
3077 drv->associated = 0;
3079 msg = nlmsg_alloc();
3083 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3085 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3086 NL80211_CMD_ASSOCIATE, 0);
3088 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3089 if (params->bssid) {
3090 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3091 MAC2STR(params->bssid));
3092 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3095 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3096 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3099 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3100 params->ssid, params->ssid_len);
3101 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3103 if (params->ssid_len > sizeof(drv->ssid))
3104 goto nla_put_failure;
3105 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3106 drv->ssid_len = params->ssid_len;
3108 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3110 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3113 #ifdef CONFIG_IEEE80211W
3114 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3115 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3116 #endif /* CONFIG_IEEE80211W */
3118 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3121 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3122 "(%s)", ret, strerror(-ret));
3123 goto nla_put_failure;
3126 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3133 #endif /* HOSTAPD */
3136 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3137 int ifindex, int mode)
3142 msg = nlmsg_alloc();
3146 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3147 0, NL80211_CMD_SET_INTERFACE, 0);
3148 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3149 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3151 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3155 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3156 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3161 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3163 struct wpa_driver_nl80211_data *drv = priv;
3169 nlmode = NL80211_IFTYPE_STATION;
3172 nlmode = NL80211_IFTYPE_ADHOC;
3175 nlmode = NL80211_IFTYPE_AP;
3181 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3182 drv->nlmode = nlmode;
3187 if (nlmode == drv->nlmode) {
3189 goto done; /* Already in the requested mode */
3192 /* mac80211 doesn't allow mode changes while the device is up, so
3193 * take the device down, try to set the mode again, and bring the
3196 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3197 /* Try to set the mode again while the interface is down */
3198 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3199 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3204 drv->nlmode = nlmode;
3207 #if defined(CONFIG_AP) || defined(HOSTAPD)
3208 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3209 /* Setup additional AP mode functionality if needed */
3210 if (drv->monitor_ifidx < 0 &&
3211 nl80211_create_monitor_interface(drv))
3213 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3214 /* Remove additional AP mode functionality */
3215 nl80211_remove_monitor_interface(drv);
3217 #endif /* CONFIG_AP || HOSTAPD */
3225 static int wpa_driver_nl80211_get_capa(void *priv,
3226 struct wpa_driver_capa *capa)
3228 struct wpa_driver_nl80211_data *drv = priv;
3229 if (!drv->has_capability)
3231 os_memcpy(capa, &drv->capa, sizeof(*capa));
3236 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3238 struct wpa_driver_nl80211_data *drv = priv;
3240 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3241 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3242 drv->operstate = state;
3243 return wpa_driver_nl80211_send_oper_ifla(
3244 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3247 #endif /* HOSTAPD */
3252 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3255 struct i802_bss *bss = &drv->bss;
3257 if (ifindex == bss->ifindex)
3261 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3266 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3271 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3273 for (i = 0; i < drv->num_if_indices; i++) {
3274 if (drv->if_indices[i] == 0) {
3275 drv->if_indices[i] = ifidx;
3280 if (drv->if_indices != drv->default_if_indices)
3281 old = drv->if_indices;
3285 drv->if_indices = realloc(old,
3286 sizeof(int) * (drv->num_if_indices + 1));
3287 if (!drv->if_indices) {
3289 drv->if_indices = drv->default_if_indices;
3291 drv->if_indices = old;
3292 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3294 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3297 drv->if_indices[drv->num_if_indices] = ifidx;
3298 drv->num_if_indices++;
3302 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3306 for (i = 0; i < drv->num_if_indices; i++) {
3307 if (drv->if_indices[i] == ifidx) {
3308 drv->if_indices[i] = 0;
3315 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3319 for (i = 0; i < drv->num_if_indices; i++)
3320 if (drv->if_indices[i] == ifidx)
3327 static int i802_set_key(const char *iface, void *priv, wpa_alg alg,
3328 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
3329 size_t seq_len, const u8 *key, size_t key_len)
3331 struct wpa_driver_nl80211_data *drv = priv;
3332 return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
3333 set_tx, seq, seq_len, key, key_len);
3337 static inline int min_int(int a, int b)
3345 static int get_key_handler(struct nl_msg *msg, void *arg)
3347 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3348 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3350 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3351 genlmsg_attrlen(gnlh, 0), NULL);
3354 * TODO: validate the key index and mac address!
3355 * Otherwise, there's a race condition as soon as
3356 * the kernel starts sending key notifications.
3359 if (tb[NL80211_ATTR_KEY_SEQ])
3360 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3361 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3366 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3369 struct wpa_driver_nl80211_data *drv = priv;
3372 msg = nlmsg_alloc();
3376 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3377 0, NL80211_CMD_GET_KEY, 0);
3380 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3381 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3382 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3386 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3392 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3395 struct wpa_driver_nl80211_data *drv = priv;
3397 u8 rates[NL80211_MAX_SUPP_RATES];
3401 msg = nlmsg_alloc();
3405 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3406 NL80211_CMD_SET_BSS, 0);
3408 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3409 rates[rates_len++] = basic_rates[i] / 5;
3411 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3413 /* TODO: multi-BSS support */
3414 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3416 return send_and_recv_msgs(drv, msg, NULL, NULL);
3422 /* Set kernel driver on given frequency (MHz) */
3423 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3425 struct wpa_driver_nl80211_data *drv = priv;
3426 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3427 freq->sec_channel_offset);
3431 static int i802_set_rts(void *priv, int rts)
3433 struct wpa_driver_nl80211_data *drv = priv;
3438 msg = nlmsg_alloc();
3447 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3448 0, NL80211_CMD_SET_WIPHY, 0);
3449 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3450 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3452 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3456 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3457 "%d (%s)", rts, ret, strerror(-ret));
3462 static int i802_set_frag(void *priv, int frag)
3464 struct wpa_driver_nl80211_data *drv = priv;
3469 msg = nlmsg_alloc();
3478 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3479 0, NL80211_CMD_SET_WIPHY, 0);
3480 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3481 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3483 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3487 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3488 "%d: %d (%s)", frag, ret, strerror(-ret));
3493 static int i802_flush(void *priv)
3495 struct wpa_driver_nl80211_data *drv = priv;
3498 msg = nlmsg_alloc();
3502 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3503 0, NL80211_CMD_DEL_STATION, 0);
3506 * XXX: FIX! this needs to flush all VLANs too
3508 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3509 if_nametoindex(drv->ifname));
3511 return send_and_recv_msgs(drv, msg, NULL, NULL);
3517 static int get_sta_handler(struct nl_msg *msg, void *arg)
3519 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3520 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3521 struct hostap_sta_driver_data *data = arg;
3522 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3523 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3524 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3525 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3526 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3527 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3528 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3531 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3532 genlmsg_attrlen(gnlh, 0), NULL);
3535 * TODO: validate the interface and mac address!
3536 * Otherwise, there's a race condition as soon as
3537 * the kernel starts sending station notifications.
3540 if (!tb[NL80211_ATTR_STA_INFO]) {
3541 wpa_printf(MSG_DEBUG, "sta stats missing!");
3544 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3545 tb[NL80211_ATTR_STA_INFO],
3547 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3551 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3552 data->inactive_msec =
3553 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3554 if (stats[NL80211_STA_INFO_RX_BYTES])
3555 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3556 if (stats[NL80211_STA_INFO_TX_BYTES])
3557 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3558 if (stats[NL80211_STA_INFO_RX_PACKETS])
3560 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3561 if (stats[NL80211_STA_INFO_TX_PACKETS])
3563 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3568 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3571 struct wpa_driver_nl80211_data *drv = priv;
3574 os_memset(data, 0, sizeof(*data));
3575 msg = nlmsg_alloc();
3579 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3580 0, NL80211_CMD_GET_STATION, 0);
3582 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3583 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3585 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3591 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3592 int cw_min, int cw_max, int burst_time)
3594 struct wpa_driver_nl80211_data *drv = priv;
3596 struct nlattr *txq, *params;
3598 msg = nlmsg_alloc();
3602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3603 0, NL80211_CMD_SET_WIPHY, 0);
3605 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3607 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
3609 goto nla_put_failure;
3611 /* We are only sending parameters for a single TXQ at a time */
3612 params = nla_nest_start(msg, 1);
3614 goto nla_put_failure;
3616 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
3617 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
3618 * 32 usec, so need to convert the value here. */
3619 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
3620 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
3621 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
3622 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
3624 nla_nest_end(msg, params);
3626 nla_nest_end(msg, txq);
3628 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3635 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
3637 struct wpa_driver_nl80211_data *drv = priv;
3639 struct i802_bss *bss;
3641 bss = os_zalloc(sizeof(*bss));
3645 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
3650 bss->ifindex = ifidx;
3651 if (hostapd_set_iface_flags(priv, ifname, 1)) {
3652 nl80211_remove_iface(priv, ifidx);
3656 bss->next = drv->bss.next;
3657 drv->bss.next = bss;
3662 static int i802_bss_remove(void *priv, const char *ifname)
3664 struct wpa_driver_nl80211_data *drv = priv;
3665 struct i802_bss *bss, *prev;
3666 int ifindex = if_nametoindex(ifname);
3667 nl80211_remove_iface(priv, ifindex);
3669 bss = drv->bss.next;
3671 if (ifindex == bss->ifindex) {
3672 prev->next = bss->next;
3683 static int i802_set_beacon(const char *iface, void *priv,
3684 const u8 *head, size_t head_len,
3685 const u8 *tail, size_t tail_len, int dtim_period)
3687 return wpa_driver_nl80211_set_beacon_iface(if_nametoindex(iface), priv,
3694 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
3696 struct wpa_driver_nl80211_data *drv = priv;
3699 msg = nlmsg_alloc();
3703 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3704 NL80211_CMD_SET_BSS, 0);
3707 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3709 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3711 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3713 /* TODO: multi-BSS support */
3714 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3716 return send_and_recv_msgs(drv, msg, NULL, NULL);
3722 static int i802_set_cts_protect(void *priv, int value)
3724 return i802_set_bss(priv, value, -1, -1);
3728 static int i802_set_preamble(void *priv, int value)
3730 return i802_set_bss(priv, -1, value, -1);
3734 static int i802_set_short_slot_time(void *priv, int value)
3736 return i802_set_bss(priv, -1, -1, value);
3740 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
3743 case HOSTAPD_IF_VLAN:
3744 return NL80211_IFTYPE_AP_VLAN;
3750 static int i802_if_add(const char *iface, void *priv,
3751 enum hostapd_driver_if_type type, char *ifname,
3754 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
3760 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
3761 char *ifname, const u8 *addr)
3763 /* unused at the moment */
3768 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
3769 const char *ifname, const u8 *addr)
3771 nl80211_remove_iface(priv, if_nametoindex(ifname));
3776 static int i802_set_sta_vlan(void *priv, const u8 *addr,
3777 const char *ifname, int vlan_id)
3779 struct wpa_driver_nl80211_data *drv = priv;
3782 msg = nlmsg_alloc();
3786 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3787 0, NL80211_CMD_SET_STATION, 0);
3789 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3790 if_nametoindex(drv->ifname));
3791 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3792 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3793 if_nametoindex(ifname));
3795 return send_and_recv_msgs(drv, msg, NULL, NULL);
3801 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
3803 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3804 struct sockaddr_ll lladdr;
3805 unsigned char buf[3000];
3807 socklen_t fromlen = sizeof(lladdr);
3809 len = recvfrom(sock, buf, sizeof(buf), 0,
3810 (struct sockaddr *)&lladdr, &fromlen);
3816 if (have_ifidx(drv, lladdr.sll_ifindex)) {
3818 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
3821 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
3826 static int i802_get_inact_sec(void *priv, const u8 *addr)
3828 struct hostap_sta_driver_data data;
3831 data.inactive_msec = (unsigned long) -1;
3832 ret = i802_read_sta_data(priv, &data, addr);
3833 if (ret || data.inactive_msec == (unsigned long) -1)
3835 return data.inactive_msec / 1000;
3839 static int i802_sta_clear_stats(void *priv, const u8 *addr)
3848 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
3851 struct wpa_driver_nl80211_data *drv = priv;
3852 struct ieee80211_mgmt mgmt;
3854 memset(&mgmt, 0, sizeof(mgmt));
3855 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3856 WLAN_FC_STYPE_DEAUTH);
3857 memcpy(mgmt.da, addr, ETH_ALEN);
3858 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3859 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
3860 mgmt.u.deauth.reason_code = host_to_le16(reason);
3861 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3863 sizeof(mgmt.u.deauth));
3867 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
3870 struct wpa_driver_nl80211_data *drv = priv;
3871 struct ieee80211_mgmt mgmt;
3873 memset(&mgmt, 0, sizeof(mgmt));
3874 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3875 WLAN_FC_STYPE_DISASSOC);
3876 memcpy(mgmt.da, addr, ETH_ALEN);
3877 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3878 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
3879 mgmt.u.disassoc.reason_code = host_to_le16(reason);
3880 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3882 sizeof(mgmt.u.disassoc));
3886 static void *i802_init(struct hostapd_data *hapd,
3887 struct wpa_init_params *params)
3889 struct wpa_driver_nl80211_data *drv;
3892 drv = wpa_driver_nl80211_init(hapd, params->ifname);
3896 drv->bss.ifindex = drv->ifindex;
3898 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
3899 drv->if_indices = drv->default_if_indices;
3900 for (i = 0; i < params->num_bridge; i++) {
3901 if (params->bridge[i])
3902 add_ifidx(drv, if_nametoindex(params->bridge[i]));
3905 /* start listening for EAPOL on the default AP interface */
3906 add_ifidx(drv, drv->ifindex);
3908 if (params->bssid) {
3909 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
3912 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
3916 if (nl80211_set_mode(drv, drv->ifindex, NL80211_IFTYPE_AP)) {
3917 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
3918 "into AP mode", drv->ifname);
3922 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3925 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
3926 if (drv->eapol_sock < 0) {
3927 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
3931 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
3933 printf("Could not register read socket for eapol\n");
3937 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
3943 nl80211_remove_monitor_interface(drv);
3944 if (drv->ioctl_sock >= 0)
3945 close(drv->ioctl_sock);
3947 genl_family_put(drv->nl80211);
3948 nl_cache_free(drv->nl_cache);
3949 nl_handle_destroy(drv->nl_handle);
3950 nl_cb_put(drv->nl_cb);
3957 static void i802_deinit(void *priv)
3959 wpa_driver_nl80211_deinit(priv);
3962 #endif /* HOSTAPD */
3965 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
3967 .desc = "Linux nl80211/cfg80211",
3969 .get_bssid = wpa_driver_nl80211_get_bssid,
3970 .get_ssid = wpa_driver_nl80211_get_ssid,
3971 .set_key = wpa_driver_nl80211_set_key,
3972 #endif /* HOSTAPD */
3973 .scan2 = wpa_driver_nl80211_scan,
3974 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
3976 .deauthenticate = wpa_driver_nl80211_deauthenticate,
3977 .disassociate = wpa_driver_nl80211_disassociate,
3978 .authenticate = wpa_driver_nl80211_authenticate,
3979 .associate = wpa_driver_nl80211_associate,
3980 .init = wpa_driver_nl80211_init,
3981 .deinit = wpa_driver_nl80211_deinit,
3982 .get_capa = wpa_driver_nl80211_get_capa,
3983 .set_operstate = wpa_driver_nl80211_set_operstate,
3984 #endif /* HOSTAPD */
3985 .set_country = wpa_driver_nl80211_set_country,
3986 .set_mode = wpa_driver_nl80211_set_mode,
3988 .set_beacon = wpa_driver_nl80211_set_beacon,
3989 #endif /* CONFIG_AP */
3990 #if defined(CONFIG_AP) || defined(HOSTAPD)
3991 .send_mlme = wpa_driver_nl80211_send_mlme,
3992 .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
3993 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
3994 .sta_add = wpa_driver_nl80211_sta_add,
3995 .sta_remove = wpa_driver_nl80211_sta_remove,
3996 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
3997 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
3998 #endif /* CONFIG_AP || HOSTAPD */
4000 .hapd_init = i802_init,
4001 .hapd_deinit = i802_deinit,
4002 .hapd_set_key = i802_set_key,
4003 .get_seqnum = i802_get_seqnum,
4004 .flush = i802_flush,
4005 .read_sta_data = i802_read_sta_data,
4006 .sta_deauth = i802_sta_deauth,
4007 .sta_disassoc = i802_sta_disassoc,
4008 .get_inact_sec = i802_get_inact_sec,
4009 .sta_clear_stats = i802_sta_clear_stats,
4010 .set_freq = i802_set_freq,
4011 .set_rts = i802_set_rts,
4012 .set_frag = i802_set_frag,
4013 .set_rate_sets = i802_set_rate_sets,
4014 .hapd_set_beacon = i802_set_beacon,
4015 .set_cts_protect = i802_set_cts_protect,
4016 .set_preamble = i802_set_preamble,
4017 .set_short_slot_time = i802_set_short_slot_time,
4018 .set_tx_queue_params = i802_set_tx_queue_params,
4019 .bss_add = i802_bss_add,
4020 .bss_remove = i802_bss_remove,
4021 .if_add = i802_if_add,
4022 .if_update = i802_if_update,
4023 .if_remove = i802_if_remove,
4024 .set_sta_vlan = i802_set_sta_vlan,
4025 #endif /* HOSTAPD */