2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2010, 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>
22 #include <netlink/genl/genl.h>
23 #include <netlink/genl/family.h>
24 #include <netlink/genl/ctrl.h>
25 #include <netpacket/packet.h>
26 #include <linux/filter.h>
27 #include "nl80211_copy.h"
31 #include "common/ieee802_11_defs.h"
33 #include "linux_ioctl.h"
35 #include "radiotap_iter.h"
39 /* libnl 2.0 compatibility code */
40 #define nl_handle nl_sock
41 #define nl_handle_alloc_cb nl_socket_alloc_cb
42 #define nl_handle_destroy nl_socket_free
43 #endif /* CONFIG_LIBNL20 */
47 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
50 #define IFF_DORMANT 0x20000 /* driver signals dormant */
53 #ifndef IF_OPER_DORMANT
54 #define IF_OPER_DORMANT 5
61 struct i802_bss *next;
63 unsigned int beacon_set:1;
66 struct wpa_driver_nl80211_data {
68 struct netlink_data *netlink;
69 int ioctl_sock; /* socket for ioctl() use */
70 char ifname[IFNAMSIZ + 1];
71 char brname[IFNAMSIZ];
74 struct wpa_driver_capa capa;
79 int scan_complete_events;
81 struct nl_handle *nl_handle;
82 struct nl_handle *nl_handle_event;
83 struct nl_cache *nl_cache;
84 struct nl_cache *nl_cache_event;
86 struct genl_family *nl80211;
88 u8 auth_bssid[ETH_ALEN];
94 int ap_scan_as_station;
95 unsigned int assoc_freq;
100 int disable_11b_rates;
102 unsigned int beacon_set:1;
103 unsigned int pending_remain_on_chan:1;
104 unsigned int added_bridge:1;
105 unsigned int added_if_into_bridge:1;
107 u64 remain_on_chan_cookie;
110 int eapol_sock; /* socket for EAPOL frames */
112 int default_if_indices[16];
124 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
126 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
128 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
129 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
130 const u8 *addr, int cmd, u16 reason_code);
131 static void nl80211_remove_monitor_interface(
132 struct wpa_driver_nl80211_data *drv);
135 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
136 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
137 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
139 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
140 static int wpa_driver_nl80211_if_remove(void *priv,
141 enum wpa_driver_if_type type,
145 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
147 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
148 int ifindex, int disabled);
152 static int ack_handler(struct nl_msg *msg, void *arg)
159 static int finish_handler(struct nl_msg *msg, void *arg)
166 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
175 static int no_seq_check(struct nl_msg *msg, void *arg)
181 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
183 int (*valid_handler)(struct nl_msg *, void *),
189 cb = nl_cb_clone(drv->nl_cb);
193 err = nl_send_auto_complete(drv->nl_handle, msg);
199 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
200 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
201 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
204 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
205 valid_handler, valid_data);
208 nl_recvmsgs(drv->nl_handle, cb);
222 static int family_handler(struct nl_msg *msg, void *arg)
224 struct family_data *res = arg;
225 struct nlattr *tb[CTRL_ATTR_MAX + 1];
226 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
227 struct nlattr *mcgrp;
230 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
231 genlmsg_attrlen(gnlh, 0), NULL);
232 if (!tb[CTRL_ATTR_MCAST_GROUPS])
235 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
236 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
237 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
238 nla_len(mcgrp), NULL);
239 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
240 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
241 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
243 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
245 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
253 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
254 const char *family, const char *group)
258 struct family_data res = { group, -ENOENT };
263 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
264 0, 0, CTRL_CMD_GETFAMILY, 0);
265 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
267 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
278 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
280 struct wpa_driver_nl80211_data *drv = priv;
281 if (!drv->associated)
283 os_memcpy(bssid, drv->bssid, ETH_ALEN);
288 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
290 struct wpa_driver_nl80211_data *drv = priv;
291 if (!drv->associated)
293 os_memcpy(ssid, drv->ssid, drv->ssid_len);
294 return drv->ssid_len;
298 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
299 char *buf, size_t len, int del)
301 union wpa_event_data event;
303 os_memset(&event, 0, sizeof(event));
304 if (len > sizeof(event.interface_status.ifname))
305 len = sizeof(event.interface_status.ifname) - 1;
306 os_memcpy(event.interface_status.ifname, buf, len);
307 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
308 EVENT_INTERFACE_ADDED;
310 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
312 event.interface_status.ifname,
313 del ? "removed" : "added");
315 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
322 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
326 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
329 int attrlen, rta_len;
333 attr = (struct rtattr *) buf;
335 rta_len = RTA_ALIGN(sizeof(struct rtattr));
336 while (RTA_OK(attr, attrlen)) {
337 if (attr->rta_type == IFLA_IFNAME) {
338 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
344 attr = RTA_NEXT(attr, attrlen);
351 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
352 int ifindex, u8 *buf, size_t len)
354 if (drv->ifindex == ifindex)
357 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
358 drv->ifindex = if_nametoindex(drv->ifname);
359 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
361 wpa_driver_nl80211_finish_drv_init(drv);
369 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
370 struct ifinfomsg *ifi,
373 struct wpa_driver_nl80211_data *drv = ctx;
374 int attrlen, rta_len;
377 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
378 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
383 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
385 drv->operstate, ifi->ifi_flags,
386 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
387 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
388 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
389 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
391 * Some drivers send the association event before the operup event--in
392 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
393 * fails. This will hit us when wpa_supplicant does not need to do
394 * IEEE 802.1X authentication
396 if (drv->operstate == 1 &&
397 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
398 !(ifi->ifi_flags & IFF_RUNNING))
399 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
403 attr = (struct rtattr *) buf;
404 rta_len = RTA_ALIGN(sizeof(struct rtattr));
405 while (RTA_OK(attr, attrlen)) {
406 if (attr->rta_type == IFLA_IFNAME) {
407 wpa_driver_nl80211_event_link(
409 ((char *) attr) + rta_len,
410 attr->rta_len - rta_len, 0);
412 attr = RTA_NEXT(attr, attrlen);
417 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
418 struct ifinfomsg *ifi,
421 struct wpa_driver_nl80211_data *drv = ctx;
422 int attrlen, rta_len;
426 attr = (struct rtattr *) buf;
428 rta_len = RTA_ALIGN(sizeof(struct rtattr));
429 while (RTA_OK(attr, attrlen)) {
430 if (attr->rta_type == IFLA_IFNAME) {
431 wpa_driver_nl80211_event_link(
433 ((char *) attr) + rta_len,
434 attr->rta_len - rta_len, 1);
436 attr = RTA_NEXT(attr, attrlen);
441 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
442 const u8 *frame, size_t len)
444 const struct ieee80211_mgmt *mgmt;
445 union wpa_event_data event;
447 mgmt = (const struct ieee80211_mgmt *) frame;
448 if (len < 24 + sizeof(mgmt->u.auth)) {
449 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
454 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
455 os_memset(&event, 0, sizeof(event));
456 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
457 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
458 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
459 if (len > 24 + sizeof(mgmt->u.auth)) {
460 event.auth.ies = mgmt->u.auth.variable;
461 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
464 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
468 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
469 const u8 *frame, size_t len)
471 const struct ieee80211_mgmt *mgmt;
472 union wpa_event_data event;
475 mgmt = (const struct ieee80211_mgmt *) frame;
476 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
477 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
482 status = le_to_host16(mgmt->u.assoc_resp.status_code);
483 if (status != WLAN_STATUS_SUCCESS) {
484 os_memset(&event, 0, sizeof(event));
485 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
486 event.assoc_reject.resp_ies =
487 (u8 *) mgmt->u.assoc_resp.variable;
488 event.assoc_reject.resp_ies_len =
489 len - 24 - sizeof(mgmt->u.assoc_resp);
491 event.assoc_reject.status_code = status;
493 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
498 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
500 os_memset(&event, 0, sizeof(event));
501 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
502 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
503 event.assoc_info.resp_ies_len =
504 len - 24 - sizeof(mgmt->u.assoc_resp);
507 event.assoc_info.freq = drv->assoc_freq;
509 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
513 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
514 enum nl80211_commands cmd, struct nlattr *status,
515 struct nlattr *addr, struct nlattr *req_ie,
516 struct nlattr *resp_ie)
518 union wpa_event_data event;
520 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
522 * Avoid reporting two association events that would confuse
525 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
526 "when using userspace SME", cmd);
530 os_memset(&event, 0, sizeof(event));
531 if (cmd == NL80211_CMD_CONNECT &&
532 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
534 event.assoc_reject.resp_ies = nla_data(resp_ie);
535 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
537 event.assoc_reject.status_code = nla_get_u16(status);
538 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
544 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
547 event.assoc_info.req_ies = nla_data(req_ie);
548 event.assoc_info.req_ies_len = nla_len(req_ie);
551 event.assoc_info.resp_ies = nla_data(resp_ie);
552 event.assoc_info.resp_ies_len = nla_len(resp_ie);
555 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
559 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
560 enum nl80211_commands cmd, struct nlattr *addr)
562 union wpa_event_data event;
563 enum wpa_event_type ev;
565 if (nla_len(addr) != ETH_ALEN)
568 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
569 cmd, MAC2STR((u8 *) nla_data(addr)));
571 if (cmd == NL80211_CMD_AUTHENTICATE)
572 ev = EVENT_AUTH_TIMED_OUT;
573 else if (cmd == NL80211_CMD_ASSOCIATE)
574 ev = EVENT_ASSOC_TIMED_OUT;
578 os_memset(&event, 0, sizeof(event));
579 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
580 wpa_supplicant_event(drv->ctx, ev, &event);
584 static void mlme_event(struct wpa_driver_nl80211_data *drv,
585 enum nl80211_commands cmd, struct nlattr *frame,
586 struct nlattr *addr, struct nlattr *timed_out)
588 if (timed_out && addr) {
589 mlme_timeout_event(drv, cmd, addr);
594 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
599 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
600 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
601 nla_data(frame), nla_len(frame));
604 case NL80211_CMD_AUTHENTICATE:
605 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
607 case NL80211_CMD_ASSOCIATE:
608 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
610 case NL80211_CMD_DEAUTHENTICATE:
612 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
614 case NL80211_CMD_DISASSOCIATE:
616 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
624 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
627 union wpa_event_data data;
629 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
630 os_memset(&data, 0, sizeof(data));
631 if (tb[NL80211_ATTR_MAC]) {
632 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
633 nla_data(tb[NL80211_ATTR_MAC]),
634 nla_len(tb[NL80211_ATTR_MAC]));
635 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
637 if (tb[NL80211_ATTR_KEY_SEQ]) {
638 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
639 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
640 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
642 if (tb[NL80211_ATTR_KEY_TYPE]) {
643 enum nl80211_key_type key_type =
644 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
645 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
646 if (key_type == NL80211_KEYTYPE_PAIRWISE)
647 data.michael_mic_failure.unicast = 1;
649 data.michael_mic_failure.unicast = 1;
651 if (tb[NL80211_ATTR_KEY_IDX]) {
652 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
653 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
656 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
660 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
663 if (tb[NL80211_ATTR_MAC] == NULL) {
664 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
668 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
670 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
671 MAC2STR(drv->bssid));
673 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
677 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
678 int cancel_event, struct nlattr *tb[])
680 unsigned int freq, chan_type, duration;
681 union wpa_event_data data;
684 if (tb[NL80211_ATTR_WIPHY_FREQ])
685 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
689 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
690 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
694 if (tb[NL80211_ATTR_DURATION])
695 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
699 if (tb[NL80211_ATTR_COOKIE])
700 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
704 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
705 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
706 cancel_event, freq, chan_type, duration,
707 (long long unsigned int) cookie,
708 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
710 if (cookie != drv->remain_on_chan_cookie)
711 return; /* not for us */
713 drv->pending_remain_on_chan = !cancel_event;
715 os_memset(&data, 0, sizeof(data));
716 data.remain_on_channel.freq = freq;
717 data.remain_on_channel.duration = duration;
718 wpa_supplicant_event(drv->ctx, cancel_event ?
719 EVENT_CANCEL_REMAIN_ON_CHANNEL :
720 EVENT_REMAIN_ON_CHANNEL, &data);
724 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
727 union wpa_event_data event;
730 struct scan_info *info;
731 #define MAX_REPORT_FREQS 50
732 int freqs[MAX_REPORT_FREQS];
735 os_memset(&event, 0, sizeof(event));
736 info = &event.scan_info;
737 info->aborted = aborted;
739 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
740 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
741 struct wpa_driver_scan_ssid *s =
742 &info->ssids[info->num_ssids];
743 s->ssid = nla_data(nl);
744 s->ssid_len = nla_len(nl);
746 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
750 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
751 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
753 freqs[num_freqs] = nla_get_u32(nl);
755 if (num_freqs == MAX_REPORT_FREQS - 1)
759 info->num_freqs = num_freqs;
761 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
765 static int process_event(struct nl_msg *msg, void *arg)
767 struct wpa_driver_nl80211_data *drv = arg;
768 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
769 struct nlattr *tb[NL80211_ATTR_MAX + 1];
771 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
772 genlmsg_attrlen(gnlh, 0), NULL);
774 if (tb[NL80211_ATTR_IFINDEX]) {
775 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
776 if (ifindex != drv->ifindex) {
777 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
778 " for foreign interface (ifindex %d)",
784 if (drv->ap_scan_as_station &&
785 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
786 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
787 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
788 drv->ap_scan_as_station = 0;
792 case NL80211_CMD_TRIGGER_SCAN:
793 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
795 case NL80211_CMD_NEW_SCAN_RESULTS:
796 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
797 drv->scan_complete_events = 1;
798 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
800 send_scan_event(drv, 0, tb);
802 case NL80211_CMD_SCAN_ABORTED:
803 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
805 * Need to indicate that scan results are available in order
806 * not to make wpa_supplicant stop its scanning.
808 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
810 send_scan_event(drv, 1, tb);
812 case NL80211_CMD_AUTHENTICATE:
813 case NL80211_CMD_ASSOCIATE:
814 case NL80211_CMD_DEAUTHENTICATE:
815 case NL80211_CMD_DISASSOCIATE:
816 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
817 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
819 case NL80211_CMD_CONNECT:
820 case NL80211_CMD_ROAM:
821 mlme_event_connect(drv, gnlh->cmd,
822 tb[NL80211_ATTR_STATUS_CODE],
823 tb[NL80211_ATTR_MAC],
824 tb[NL80211_ATTR_REQ_IE],
825 tb[NL80211_ATTR_RESP_IE]);
827 case NL80211_CMD_DISCONNECT:
828 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
830 * Avoid reporting two disassociation events that could
831 * confuse the core code.
833 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
834 "event when using userspace SME");
838 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
840 case NL80211_CMD_MICHAEL_MIC_FAILURE:
841 mlme_event_michael_mic_failure(drv, tb);
843 case NL80211_CMD_JOIN_IBSS:
844 mlme_event_join_ibss(drv, tb);
846 case NL80211_CMD_REMAIN_ON_CHANNEL:
847 mlme_event_remain_on_channel(drv, 0, tb);
849 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
850 mlme_event_remain_on_channel(drv, 1, tb);
853 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
854 "(cmd=%d)", gnlh->cmd);
862 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
866 struct wpa_driver_nl80211_data *drv = eloop_ctx;
868 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
870 cb = nl_cb_clone(drv->nl_cb);
873 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
874 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
875 nl_recvmsgs(drv->nl_handle_event, cb);
881 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
882 * @priv: driver_nl80211 private data
883 * @alpha2_arg: country to which to switch to
884 * Returns: 0 on success, -1 on failure
886 * This asks nl80211 to set the regulatory domain for given
887 * country ISO / IEC alpha2.
889 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
891 struct wpa_driver_nl80211_data *drv = priv;
899 alpha2[0] = alpha2_arg[0];
900 alpha2[1] = alpha2_arg[1];
903 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
904 0, NL80211_CMD_REQ_SET_REG, 0);
906 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
907 if (send_and_recv_msgs(drv, msg, NULL, NULL))
916 struct wiphy_info_data {
920 int connect_supported;
924 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
926 struct nlattr *tb[NL80211_ATTR_MAX + 1];
927 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
928 struct wiphy_info_data *info = arg;
930 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
931 genlmsg_attrlen(gnlh, 0), NULL);
933 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
934 info->max_scan_ssids =
935 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
937 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
938 struct nlattr *nl_mode;
940 nla_for_each_nested(nl_mode,
941 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
942 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
943 info->ap_supported = 1;
949 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
950 struct nlattr *nl_cmd;
953 nla_for_each_nested(nl_cmd,
954 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
955 u32 cmd = nla_get_u32(nl_cmd);
956 if (cmd == NL80211_CMD_AUTHENTICATE)
957 info->auth_supported = 1;
958 else if (cmd == NL80211_CMD_CONNECT)
959 info->connect_supported = 1;
967 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
968 struct wiphy_info_data *info)
972 os_memset(info, 0, sizeof(*info));
977 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
978 0, NL80211_CMD_GET_WIPHY, 0);
980 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
982 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
991 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
993 struct wiphy_info_data info;
994 if (wpa_driver_nl80211_get_info(drv, &info))
996 drv->has_capability = 1;
997 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
998 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
999 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1000 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1001 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1002 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1003 WPA_DRIVER_CAPA_ENC_WEP104 |
1004 WPA_DRIVER_CAPA_ENC_TKIP |
1005 WPA_DRIVER_CAPA_ENC_CCMP;
1006 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1007 WPA_DRIVER_AUTH_SHARED |
1008 WPA_DRIVER_AUTH_LEAP;
1010 drv->capa.max_scan_ssids = info.max_scan_ssids;
1011 if (info.ap_supported)
1012 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1014 if (info.auth_supported)
1015 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1016 else if (!info.connect_supported) {
1017 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1018 "authentication/association or connect commands");
1022 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1026 #endif /* HOSTAPD */
1029 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1034 /* Initialize generic netlink and nl80211 */
1036 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1037 if (drv->nl_cb == NULL) {
1038 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1043 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1044 if (drv->nl_handle == NULL) {
1045 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1050 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1051 if (drv->nl_handle_event == NULL) {
1052 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1053 "callbacks (event)");
1057 if (genl_connect(drv->nl_handle)) {
1058 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1063 if (genl_connect(drv->nl_handle_event)) {
1064 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1069 #ifdef CONFIG_LIBNL20
1070 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1071 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1075 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1077 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1078 "netlink cache (event)");
1081 #else /* CONFIG_LIBNL20 */
1082 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1083 if (drv->nl_cache == NULL) {
1084 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1088 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1089 if (drv->nl_cache_event == NULL) {
1090 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1091 "netlink cache (event)");
1094 #endif /* CONFIG_LIBNL20 */
1096 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1097 if (drv->nl80211 == NULL) {
1098 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1103 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1105 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1107 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1108 "membership for scan events: %d (%s)",
1109 ret, strerror(-ret));
1113 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1115 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1117 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1118 "membership for mlme events: %d (%s)",
1119 ret, strerror(-ret));
1123 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1124 wpa_driver_nl80211_event_receive, drv, ctx);
1129 nl_cache_free(drv->nl_cache_event);
1131 nl_cache_free(drv->nl_cache);
1133 nl_handle_destroy(drv->nl_handle_event);
1135 nl_handle_destroy(drv->nl_handle);
1137 nl_cb_put(drv->nl_cb);
1144 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1145 * @ctx: context to be used when calling wpa_supplicant functions,
1146 * e.g., wpa_supplicant_event()
1147 * @ifname: interface name, e.g., wlan0
1148 * Returns: Pointer to private data, %NULL on failure
1150 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1152 struct wpa_driver_nl80211_data *drv;
1153 struct netlink_config *cfg;
1155 drv = os_zalloc(sizeof(*drv));
1159 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1160 drv->monitor_ifidx = -1;
1161 drv->monitor_sock = -1;
1162 drv->ioctl_sock = -1;
1164 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1169 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1170 if (drv->ioctl_sock < 0) {
1171 perror("socket(PF_INET,SOCK_DGRAM)");
1175 cfg = os_zalloc(sizeof(*cfg));
1179 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1180 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1181 drv->netlink = netlink_init(cfg);
1182 if (drv->netlink == NULL) {
1186 if (wpa_driver_nl80211_finish_drv_init(drv))
1192 netlink_deinit(drv->netlink);
1193 if (drv->ioctl_sock >= 0)
1194 close(drv->ioctl_sock);
1196 genl_family_put(drv->nl80211);
1197 nl_cache_free(drv->nl_cache);
1198 nl_handle_destroy(drv->nl_handle);
1199 nl_cb_put(drv->nl_cb);
1207 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1209 drv->ifindex = if_nametoindex(drv->ifname);
1212 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1213 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1214 "use managed mode");
1217 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1)) {
1218 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1223 if (wpa_driver_nl80211_capa(drv))
1226 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1227 1, IF_OPER_DORMANT);
1228 #endif /* HOSTAPD */
1235 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1237 struct i802_bss *bss, *prev;
1238 bss = drv->bss.next;
1245 #endif /* HOSTAPD */
1248 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1252 msg = nlmsg_alloc();
1256 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1257 0, NL80211_CMD_DEL_BEACON, 0);
1258 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1260 return send_and_recv_msgs(drv, msg, NULL, NULL);
1267 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1268 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1270 * Shut down driver interface and processing of driver events. Free
1271 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1273 static void wpa_driver_nl80211_deinit(void *priv)
1275 struct wpa_driver_nl80211_data *drv = priv;
1277 if (drv->added_if_into_bridge) {
1278 if (linux_br_del_if(drv->ioctl_sock, drv->brname, drv->ifname)
1280 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1281 "interface %s from bridge %s: %s",
1282 drv->ifname, drv->brname, strerror(errno));
1284 if (drv->added_bridge) {
1285 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1286 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1288 drv->brname, strerror(errno));
1291 nl80211_remove_monitor_interface(drv);
1293 if (drv->nlmode == NL80211_IFTYPE_AP)
1294 wpa_driver_nl80211_del_beacon(drv);
1297 if (drv->last_freq_ht) {
1298 /* Clear HT flags from the driver */
1299 struct hostapd_freq_params freq;
1300 os_memset(&freq, 0, sizeof(freq));
1301 freq.freq = drv->last_freq;
1302 i802_set_freq(priv, &freq);
1305 if (drv->eapol_sock >= 0) {
1306 eloop_unregister_read_sock(drv->eapol_sock);
1307 close(drv->eapol_sock);
1310 if (drv->if_indices != drv->default_if_indices)
1311 os_free(drv->if_indices);
1313 wpa_driver_nl80211_free_bss(drv);
1314 #endif /* HOSTAPD */
1316 if (drv->disable_11b_rates)
1317 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1319 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1320 netlink_deinit(drv->netlink);
1322 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1324 (void) linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0);
1325 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1327 if (drv->ioctl_sock >= 0)
1328 close(drv->ioctl_sock);
1330 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1331 genl_family_put(drv->nl80211);
1332 nl_cache_free(drv->nl_cache);
1333 nl_cache_free(drv->nl_cache_event);
1334 nl_handle_destroy(drv->nl_handle);
1335 nl_handle_destroy(drv->nl_handle_event);
1336 nl_cb_put(drv->nl_cb);
1338 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1346 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1347 * @eloop_ctx: Driver private data
1348 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1350 * This function can be used as registered timeout when starting a scan to
1351 * generate a scan completed event if the driver does not report this.
1353 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1355 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1356 if (drv->ap_scan_as_station) {
1357 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1358 drv->ap_scan_as_station = 0;
1360 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1361 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1366 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1367 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1368 * @params: Scan parameters
1369 * Returns: 0 on success, -1 on failure
1371 static int wpa_driver_nl80211_scan(void *priv,
1372 struct wpa_driver_scan_params *params)
1374 struct wpa_driver_nl80211_data *drv = priv;
1375 int ret = 0, timeout;
1376 struct nl_msg *msg, *ssids, *freqs;
1379 msg = nlmsg_alloc();
1380 ssids = nlmsg_alloc();
1381 freqs = nlmsg_alloc();
1382 if (!msg || !ssids || !freqs) {
1389 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1390 NL80211_CMD_TRIGGER_SCAN, 0);
1392 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1394 for (i = 0; i < params->num_ssids; i++) {
1395 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1396 params->ssids[i].ssid);
1398 if (params->num_ssids)
1399 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1401 if (params->extra_ies) {
1402 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1406 if (params->freqs) {
1407 for (i = 0; params->freqs[i]; i++)
1408 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1409 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1412 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1415 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1416 "(%s)", ret, strerror(-ret));
1418 if (drv->nlmode == NL80211_IFTYPE_AP) {
1420 * mac80211 does not allow scan requests in AP mode, so
1421 * try to do this in station mode.
1423 if (wpa_driver_nl80211_set_mode(drv,
1424 IEEE80211_MODE_INFRA))
1425 goto nla_put_failure;
1427 if (wpa_driver_nl80211_scan(drv, params)) {
1428 wpa_driver_nl80211_set_mode(drv,
1430 goto nla_put_failure;
1433 /* Restore AP mode when processing scan results */
1434 drv->ap_scan_as_station = 1;
1437 goto nla_put_failure;
1439 goto nla_put_failure;
1440 #endif /* HOSTAPD */
1443 /* Not all drivers generate "scan completed" wireless event, so try to
1444 * read results after a timeout. */
1446 if (drv->scan_complete_events) {
1448 * The driver seems to deliver events to notify when scan is
1449 * complete, so use longer timeout to avoid race conditions
1450 * with scanning and following association request.
1454 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1455 "seconds", ret, timeout);
1456 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1457 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1468 static int bss_info_handler(struct nl_msg *msg, void *arg)
1470 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1471 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1472 struct nlattr *bss[NL80211_BSS_MAX + 1];
1473 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1474 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1475 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1476 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1477 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1478 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1479 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1480 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1481 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1482 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1483 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1484 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1486 struct wpa_scan_results *res = arg;
1487 struct wpa_scan_res **tmp;
1488 struct wpa_scan_res *r;
1489 const u8 *ie, *beacon_ie;
1490 size_t ie_len, beacon_ie_len;
1493 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1494 genlmsg_attrlen(gnlh, 0), NULL);
1495 if (!tb[NL80211_ATTR_BSS])
1497 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1500 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1501 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1502 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1507 if (bss[NL80211_BSS_BEACON_IES]) {
1508 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1509 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1515 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1518 if (bss[NL80211_BSS_BSSID])
1519 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1521 if (bss[NL80211_BSS_FREQUENCY])
1522 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1523 if (bss[NL80211_BSS_BEACON_INTERVAL])
1524 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1525 if (bss[NL80211_BSS_CAPABILITY])
1526 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1527 r->flags |= WPA_SCAN_NOISE_INVALID;
1528 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1529 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1530 r->level /= 100; /* mBm to dBm */
1531 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1532 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1533 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1534 r->flags |= WPA_SCAN_LEVEL_INVALID;
1536 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1537 if (bss[NL80211_BSS_TSF])
1538 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1539 if (bss[NL80211_BSS_SEEN_MS_AGO])
1540 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1542 pos = (u8 *) (r + 1);
1544 os_memcpy(pos, ie, ie_len);
1547 r->beacon_ie_len = beacon_ie_len;
1549 os_memcpy(pos, beacon_ie, beacon_ie_len);
1551 if (bss[NL80211_BSS_STATUS]) {
1552 enum nl80211_bss_status status;
1553 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1555 case NL80211_BSS_STATUS_AUTHENTICATED:
1556 r->flags |= WPA_SCAN_AUTHENTICATED;
1558 case NL80211_BSS_STATUS_ASSOCIATED:
1559 r->flags |= WPA_SCAN_ASSOCIATED;
1566 tmp = os_realloc(res->res,
1567 (res->num + 1) * sizeof(struct wpa_scan_res *));
1572 tmp[res->num++] = r;
1579 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1582 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1583 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1584 "mismatch (" MACSTR ")", MAC2STR(addr));
1585 wpa_driver_nl80211_mlme(drv, addr,
1586 NL80211_CMD_DEAUTHENTICATE,
1587 WLAN_REASON_PREV_AUTH_NOT_VALID);
1592 static void wpa_driver_nl80211_check_bss_status(
1593 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1597 for (i = 0; i < res->num; i++) {
1598 struct wpa_scan_res *r = res->res[i];
1599 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1600 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1601 "indicates BSS status with " MACSTR
1602 " as authenticated",
1604 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1605 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1606 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1608 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1609 " in local state (auth=" MACSTR
1610 " assoc=" MACSTR ")",
1611 MAC2STR(drv->auth_bssid),
1612 MAC2STR(drv->bssid));
1613 clear_state_mismatch(drv, r->bssid);
1617 if (r->flags & WPA_SCAN_ASSOCIATED) {
1618 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1619 "indicate BSS status with " MACSTR
1622 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1624 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1625 "(not associated) does not match "
1627 clear_state_mismatch(drv, r->bssid);
1628 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1629 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1631 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1632 "(associated with " MACSTR ") does "
1633 "not match with BSS state",
1634 MAC2STR(drv->bssid));
1635 clear_state_mismatch(drv, r->bssid);
1636 clear_state_mismatch(drv, drv->bssid);
1643 static void wpa_scan_results_free(struct wpa_scan_results *res)
1650 for (i = 0; i < res->num; i++)
1651 os_free(res->res[i]);
1657 static struct wpa_scan_results *
1658 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
1661 struct wpa_scan_results *res;
1664 res = os_zalloc(sizeof(*res));
1667 msg = nlmsg_alloc();
1669 goto nla_put_failure;
1671 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1672 NL80211_CMD_GET_SCAN, 0);
1673 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1675 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1678 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1679 (unsigned long) res->num);
1682 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1683 "(%s)", ret, strerror(-ret));
1686 wpa_scan_results_free(res);
1692 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1693 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1694 * Returns: Scan results on success, -1 on failure
1696 static struct wpa_scan_results *
1697 wpa_driver_nl80211_get_scan_results(void *priv)
1699 struct wpa_driver_nl80211_data *drv = priv;
1700 struct wpa_scan_results *res;
1702 res = nl80211_get_scan_results(drv);
1704 wpa_driver_nl80211_check_bss_status(drv, res);
1709 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1711 struct wpa_scan_results *res;
1714 res = nl80211_get_scan_results(drv);
1716 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1720 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1721 for (i = 0; i < res->num; i++) {
1722 struct wpa_scan_res *r = res->res[i];
1723 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1724 (int) i, (int) res->num, MAC2STR(r->bssid),
1725 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1726 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1729 wpa_scan_results_free(res);
1733 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1734 enum wpa_alg alg, const u8 *addr,
1735 int key_idx, int set_tx,
1736 const u8 *seq, size_t seq_len,
1737 const u8 *key, size_t key_len)
1739 struct wpa_driver_nl80211_data *drv = priv;
1740 int ifindex = if_nametoindex(ifname);
1744 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1745 "set_tx=%d seq_len=%lu key_len=%lu",
1746 __func__, ifindex, alg, addr, key_idx, set_tx,
1747 (unsigned long) seq_len, (unsigned long) key_len);
1749 msg = nlmsg_alloc();
1753 if (alg == WPA_ALG_NONE) {
1754 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1755 0, NL80211_CMD_DEL_KEY, 0);
1757 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1758 0, NL80211_CMD_NEW_KEY, 0);
1759 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1763 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1764 WLAN_CIPHER_SUITE_WEP40);
1766 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1767 WLAN_CIPHER_SUITE_WEP104);
1770 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1771 WLAN_CIPHER_SUITE_TKIP);
1774 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1775 WLAN_CIPHER_SUITE_CCMP);
1778 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1779 WLAN_CIPHER_SUITE_AES_CMAC);
1782 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1783 "algorithm %d", __func__, alg);
1790 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1792 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1794 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1795 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1797 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1800 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1801 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1804 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1805 ret, strerror(-ret));
1808 * If we failed or don't need to set the default TX key (below),
1811 if (ret || !set_tx || alg == WPA_ALG_NONE)
1813 #ifdef HOSTAPD /* FIX: is this needed? */
1816 #endif /* HOSTAPD */
1818 msg = nlmsg_alloc();
1822 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1823 0, NL80211_CMD_SET_KEY, 0);
1824 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1825 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1826 if (alg == WPA_ALG_IGTK)
1827 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1829 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1831 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1835 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1836 "err=%d %s)", ret, strerror(-ret));
1844 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
1845 int key_idx, int defkey,
1846 const u8 *seq, size_t seq_len,
1847 const u8 *key, size_t key_len)
1849 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1853 if (defkey && alg == WPA_ALG_IGTK)
1854 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1856 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1858 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1863 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1864 WLAN_CIPHER_SUITE_WEP40);
1866 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1867 WLAN_CIPHER_SUITE_WEP104);
1870 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1873 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1876 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1877 WLAN_CIPHER_SUITE_AES_CMAC);
1880 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1881 "algorithm %d", __func__, alg);
1886 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1888 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1890 nla_nest_end(msg, key_attr);
1898 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1902 struct nlattr *nl_keys, *nl_key;
1904 for (i = 0; i < 4; i++) {
1905 if (!params->wep_key[i])
1913 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1915 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1917 goto nla_put_failure;
1919 for (i = 0; i < 4; i++) {
1920 if (!params->wep_key[i])
1923 nl_key = nla_nest_start(msg, i);
1925 goto nla_put_failure;
1927 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1928 params->wep_key[i]);
1929 if (params->wep_key_len[i] == 5)
1930 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1931 WLAN_CIPHER_SUITE_WEP40);
1933 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1934 WLAN_CIPHER_SUITE_WEP104);
1936 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1938 if (i == params->wep_tx_keyidx)
1939 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1941 nla_nest_end(msg, nl_key);
1943 nla_nest_end(msg, nl_keys);
1952 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1953 const u8 *addr, int cmd, u16 reason_code)
1958 msg = nlmsg_alloc();
1962 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1965 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1966 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1968 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1971 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1972 "(%s)", ret, strerror(-ret));
1973 goto nla_put_failure;
1983 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1984 const u8 *addr, int reason_code)
1986 wpa_printf(MSG_DEBUG, "%s", __func__);
1987 drv->associated = 0;
1988 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1993 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1996 struct wpa_driver_nl80211_data *drv = priv;
1997 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1998 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1999 wpa_printf(MSG_DEBUG, "%s", __func__);
2000 drv->associated = 0;
2001 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2006 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2009 struct wpa_driver_nl80211_data *drv = priv;
2010 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2011 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2012 wpa_printf(MSG_DEBUG, "%s", __func__);
2013 drv->associated = 0;
2014 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2019 static int wpa_driver_nl80211_authenticate(
2020 void *priv, struct wpa_driver_auth_params *params)
2022 struct wpa_driver_nl80211_data *drv = priv;
2025 enum nl80211_auth_type type;
2028 drv->associated = 0;
2029 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2030 /* FIX: IBSS mode */
2031 if (drv->nlmode != NL80211_IFTYPE_STATION)
2032 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2034 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2038 msg = nlmsg_alloc();
2042 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2045 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2046 NL80211_CMD_AUTHENTICATE, 0);
2048 for (i = 0; i < 4; i++) {
2049 if (!params->wep_key[i])
2051 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2053 i == params->wep_tx_keyidx, NULL, 0,
2055 params->wep_key_len[i]);
2056 if (params->wep_tx_keyidx != i)
2058 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2059 params->wep_key[i], params->wep_key_len[i])) {
2065 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2066 if (params->bssid) {
2067 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2068 MAC2STR(params->bssid));
2069 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2072 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2073 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2076 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2077 params->ssid, params->ssid_len);
2078 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2081 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2083 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2085 * TODO: if multiple auth_alg options enabled, try them one by one if
2086 * the AP rejects authentication due to unknown auth alg
2088 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2089 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2090 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2091 type = NL80211_AUTHTYPE_SHARED_KEY;
2092 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2093 type = NL80211_AUTHTYPE_NETWORK_EAP;
2094 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2095 type = NL80211_AUTHTYPE_FT;
2097 goto nla_put_failure;
2098 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2099 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2101 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2104 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2105 "(%s)", ret, strerror(-ret));
2107 if (ret == -EALREADY && count == 1 && params->bssid) {
2109 * mac80211 does not currently accept new
2110 * authentication if we are already authenticated. As a
2111 * workaround, force deauthentication and try again.
2113 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2114 "after forced deauthentication");
2115 wpa_driver_nl80211_deauthenticate(
2117 WLAN_REASON_PREV_AUTH_NOT_VALID);
2121 goto nla_put_failure;
2124 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2133 struct phy_info_arg {
2135 struct hostapd_hw_modes *modes;
2138 static int phy_info_handler(struct nl_msg *msg, void *arg)
2140 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2141 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2142 struct phy_info_arg *phy_info = arg;
2144 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2146 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2147 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2148 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2149 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2150 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2151 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2152 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2153 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2156 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2157 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2158 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2159 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2162 struct nlattr *nl_band;
2163 struct nlattr *nl_freq;
2164 struct nlattr *nl_rate;
2165 int rem_band, rem_freq, rem_rate;
2166 struct hostapd_hw_modes *mode;
2167 int idx, mode_is_set;
2169 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2170 genlmsg_attrlen(gnlh, 0), NULL);
2172 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2175 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2176 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2179 phy_info->modes = mode;
2183 mode = &phy_info->modes[*(phy_info->num_modes)];
2184 memset(mode, 0, sizeof(*mode));
2185 *(phy_info->num_modes) += 1;
2187 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2188 nla_len(nl_band), NULL);
2190 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2191 mode->ht_capab = nla_get_u16(
2192 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2195 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2196 mode->a_mpdu_params |= nla_get_u8(
2197 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2201 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2202 mode->a_mpdu_params |= nla_get_u8(
2203 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2207 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2208 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2210 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2211 os_memcpy(mode->mcs_set, mcs, 16);
2214 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2215 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2216 nla_len(nl_freq), freq_policy);
2217 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2219 mode->num_channels++;
2222 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2223 if (!mode->channels)
2228 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2229 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2230 nla_len(nl_freq), freq_policy);
2231 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2234 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2235 mode->channels[idx].flag = 0;
2238 /* crude heuristic */
2239 if (mode->channels[idx].freq < 4000)
2240 mode->mode = HOSTAPD_MODE_IEEE80211B;
2242 mode->mode = HOSTAPD_MODE_IEEE80211A;
2246 /* crude heuristic */
2247 if (mode->channels[idx].freq < 4000)
2248 if (mode->channels[idx].freq == 2484)
2249 mode->channels[idx].chan = 14;
2251 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2253 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2255 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2256 mode->channels[idx].flag |=
2257 HOSTAPD_CHAN_DISABLED;
2258 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2259 mode->channels[idx].flag |=
2260 HOSTAPD_CHAN_PASSIVE_SCAN;
2261 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2262 mode->channels[idx].flag |=
2263 HOSTAPD_CHAN_NO_IBSS;
2264 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2265 mode->channels[idx].flag |=
2268 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2269 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2270 mode->channels[idx].max_tx_power =
2271 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2276 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2277 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2278 nla_len(nl_rate), rate_policy);
2279 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2284 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2290 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2291 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2292 nla_len(nl_rate), rate_policy);
2293 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2295 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2297 /* crude heuristic */
2298 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2299 mode->rates[idx] > 200)
2300 mode->mode = HOSTAPD_MODE_IEEE80211G;
2309 static struct hostapd_hw_modes *
2310 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2313 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2314 int i, mode11g_idx = -1;
2316 /* If only 802.11g mode is included, use it to construct matching
2317 * 802.11b mode data. */
2319 for (m = 0; m < *num_modes; m++) {
2320 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2321 return modes; /* 802.11b already included */
2322 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2326 if (mode11g_idx < 0)
2327 return modes; /* 2.4 GHz band not supported at all */
2329 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2331 return modes; /* Could not add 802.11b mode */
2333 mode = &nmodes[*num_modes];
2334 os_memset(mode, 0, sizeof(*mode));
2338 mode->mode = HOSTAPD_MODE_IEEE80211B;
2340 mode11g = &modes[mode11g_idx];
2341 mode->num_channels = mode11g->num_channels;
2342 mode->channels = os_malloc(mode11g->num_channels *
2343 sizeof(struct hostapd_channel_data));
2344 if (mode->channels == NULL) {
2346 return modes; /* Could not add 802.11b mode */
2348 os_memcpy(mode->channels, mode11g->channels,
2349 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2351 mode->num_rates = 0;
2352 mode->rates = os_malloc(4 * sizeof(int));
2353 if (mode->rates == NULL) {
2354 os_free(mode->channels);
2356 return modes; /* Could not add 802.11b mode */
2359 for (i = 0; i < mode11g->num_rates; i++) {
2360 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2361 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2363 mode->rates[mode->num_rates] = mode11g->rates[i];
2365 if (mode->num_rates == 4)
2369 if (mode->num_rates == 0) {
2370 os_free(mode->channels);
2371 os_free(mode->rates);
2373 return modes; /* No 802.11b rates */
2376 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2383 static struct hostapd_hw_modes *
2384 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2386 struct wpa_driver_nl80211_data *drv = priv;
2388 struct phy_info_arg result = {
2389 .num_modes = num_modes,
2396 msg = nlmsg_alloc();
2400 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2401 0, NL80211_CMD_GET_WIPHY, 0);
2403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2405 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2406 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2412 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2413 const void *data, size_t len,
2417 0x00, 0x00, /* radiotap version */
2418 0x0e, 0x00, /* radiotap length */
2419 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2420 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2422 0x00, 0x00, /* RX and TX flags to indicate that */
2423 0x00, 0x00, /* this is the injected frame directly */
2425 struct iovec iov[2] = {
2427 .iov_base = &rtap_hdr,
2428 .iov_len = sizeof(rtap_hdr),
2431 .iov_base = (void *) data,
2435 struct msghdr msg = {
2440 .msg_control = NULL,
2441 .msg_controllen = 0,
2446 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2448 return sendmsg(drv->monitor_sock, &msg, 0);
2452 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2455 struct wpa_driver_nl80211_data *drv = priv;
2456 struct ieee80211_mgmt *mgmt;
2460 mgmt = (struct ieee80211_mgmt *) data;
2461 fc = le_to_host16(mgmt->frame_control);
2463 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2464 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2466 * Only one of the authentication frame types is encrypted.
2467 * In order for static WEP encryption to work properly (i.e.,
2468 * to not encrypt the frame), we need to tell mac80211 about
2469 * the frames that must not be encrypted.
2471 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2472 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2473 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2477 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2481 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2482 const u8 *head, size_t head_len,
2483 const u8 *tail, size_t tail_len,
2484 int dtim_period, int beacon_int)
2486 struct wpa_driver_nl80211_data *drv = priv;
2488 u8 cmd = NL80211_CMD_NEW_BEACON;
2491 int ifindex = if_nametoindex(ifname);
2493 struct i802_bss *bss;
2495 bss = get_bss(drv, ifindex);
2498 beacon_set = bss->beacon_set;
2500 beacon_set = drv->beacon_set;
2501 #endif /* HOSTAPD */
2503 msg = nlmsg_alloc();
2507 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2510 cmd = NL80211_CMD_SET_BEACON;
2512 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2514 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2515 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2516 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2517 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2518 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2520 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2522 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2523 ret, strerror(-ret));
2526 bss->beacon_set = 1;
2528 drv->beacon_set = 1;
2529 #endif /* HOSTAPD */
2537 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2538 int freq, int ht_enabled,
2539 int sec_channel_offset)
2544 msg = nlmsg_alloc();
2548 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2549 NL80211_CMD_SET_WIPHY, 0);
2551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2552 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2554 switch (sec_channel_offset) {
2556 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2557 NL80211_CHAN_HT40MINUS);
2560 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2561 NL80211_CHAN_HT40PLUS);
2564 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2570 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2573 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2574 "%d (%s)", freq, ret, strerror(-ret));
2580 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2581 struct hostapd_sta_add_params *params)
2583 struct wpa_driver_nl80211_data *drv = priv;
2587 msg = nlmsg_alloc();
2591 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2592 0, NL80211_CMD_NEW_STATION, 0);
2594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2595 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2596 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2597 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2598 params->supp_rates);
2599 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2600 params->listen_interval);
2601 if (params->ht_capabilities) {
2602 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2603 sizeof(*params->ht_capabilities),
2604 params->ht_capabilities);
2607 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2609 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2610 "result: %d (%s)", ret, strerror(-ret));
2618 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2620 struct wpa_driver_nl80211_data *drv = priv;
2624 msg = nlmsg_alloc();
2628 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2629 0, NL80211_CMD_DEL_STATION, 0);
2631 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2632 if_nametoindex(drv->ifname));
2633 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2635 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2644 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2649 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2652 /* stop listening for EAPOL on this interface */
2653 del_ifidx(drv, ifidx);
2654 #endif /* HOSTAPD */
2656 msg = nlmsg_alloc();
2658 goto nla_put_failure;
2660 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2661 0, NL80211_CMD_DEL_INTERFACE, 0);
2662 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2664 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2667 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
2671 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2673 enum nl80211_iftype iftype,
2674 const u8 *addr, int wds)
2676 struct nl_msg *msg, *flags = NULL;
2680 msg = nlmsg_alloc();
2684 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2685 0, NL80211_CMD_NEW_INTERFACE, 0);
2686 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2687 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2688 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2690 if (iftype == NL80211_IFTYPE_MONITOR) {
2693 flags = nlmsg_alloc();
2695 goto nla_put_failure;
2697 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2699 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2704 goto nla_put_failure;
2706 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2709 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2712 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2713 ifname, ret, strerror(-ret));
2717 ifidx = if_nametoindex(ifname);
2718 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2725 /* start listening for EAPOL on this interface */
2726 add_ifidx(drv, ifidx);
2727 #endif /* HOSTAPD */
2729 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2730 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
2731 nl80211_remove_iface(drv, ifidx);
2739 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2740 const char *ifname, enum nl80211_iftype iftype,
2741 const u8 *addr, int wds)
2745 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
2747 /* if error occured and interface exists already */
2748 if (ret == -ENFILE && if_nametoindex(ifname)) {
2749 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2751 /* Try to remove the interface that was already there. */
2752 nl80211_remove_iface(drv, if_nametoindex(ifname));
2754 /* Try to create the interface again */
2755 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2759 if (ret >= 0 && drv->disable_11b_rates)
2760 nl80211_disable_11b_rates(drv, ret, 1);
2766 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2768 struct ieee80211_hdr *hdr;
2770 union wpa_event_data event;
2772 hdr = (struct ieee80211_hdr *) buf;
2773 fc = le_to_host16(hdr->frame_control);
2775 os_memset(&event, 0, sizeof(event));
2776 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2777 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2778 event.tx_status.dst = hdr->addr1;
2779 event.tx_status.data = buf;
2780 event.tx_status.data_len = len;
2781 event.tx_status.ack = ok;
2782 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
2786 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2787 u8 *buf, size_t len)
2789 union wpa_event_data event;
2790 os_memset(&event, 0, sizeof(event));
2791 event.rx_from_unknown.frame = buf;
2792 event.rx_from_unknown.len = len;
2793 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2797 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2798 u8 *buf, size_t len, int datarate, int ssi_signal)
2800 struct ieee80211_hdr *hdr;
2802 union wpa_event_data event;
2804 hdr = (struct ieee80211_hdr *) buf;
2805 fc = le_to_host16(hdr->frame_control);
2807 switch (WLAN_FC_GET_TYPE(fc)) {
2808 case WLAN_FC_TYPE_MGMT:
2809 os_memset(&event, 0, sizeof(event));
2810 event.rx_mgmt.frame = buf;
2811 event.rx_mgmt.frame_len = len;
2812 event.rx_mgmt.datarate = datarate;
2813 event.rx_mgmt.ssi_signal = ssi_signal;
2814 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
2816 case WLAN_FC_TYPE_CTRL:
2817 /* can only get here with PS-Poll frames */
2818 wpa_printf(MSG_DEBUG, "CTRL");
2819 from_unknown_sta(drv, buf, len);
2821 case WLAN_FC_TYPE_DATA:
2822 from_unknown_sta(drv, buf, len);
2828 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2830 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2832 unsigned char buf[3000];
2833 struct ieee80211_radiotap_iterator iter;
2835 int datarate = 0, ssi_signal = 0;
2836 int injected = 0, failed = 0, rxflags = 0;
2838 len = recv(sock, buf, sizeof(buf), 0);
2844 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
2845 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
2846 "frame since Probe Request reporting is disabled");
2850 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2851 printf("received invalid radiotap frame\n");
2856 ret = ieee80211_radiotap_iterator_next(&iter);
2860 printf("received invalid radiotap frame (%d)\n", ret);
2863 switch (iter.this_arg_index) {
2864 case IEEE80211_RADIOTAP_FLAGS:
2865 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2868 case IEEE80211_RADIOTAP_RX_FLAGS:
2871 case IEEE80211_RADIOTAP_TX_FLAGS:
2873 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2874 IEEE80211_RADIOTAP_F_TX_FAIL;
2876 case IEEE80211_RADIOTAP_DATA_RETRIES:
2878 case IEEE80211_RADIOTAP_CHANNEL:
2879 /* TODO: convert from freq/flags to channel number */
2881 case IEEE80211_RADIOTAP_RATE:
2882 datarate = *iter.this_arg * 5;
2884 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2885 ssi_signal = *iter.this_arg;
2890 if (rxflags && injected)
2894 handle_frame(drv, buf + iter.max_length,
2895 len - iter.max_length, datarate, ssi_signal);
2897 handle_tx_callback(drv->ctx, buf + iter.max_length,
2898 len - iter.max_length, !failed);
2903 * we post-process the filter code later and rewrite
2904 * this to the offset to the last instruction
2909 static struct sock_filter msock_filter_insns[] = {
2911 * do a little-endian load of the radiotap length field
2913 /* load lower byte into A */
2914 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2915 /* put it into X (== index register) */
2916 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2917 /* load upper byte into A */
2918 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2919 /* left-shift it by 8 */
2920 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2922 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2923 /* put result into X */
2924 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2927 * Allow management frames through, this also gives us those
2928 * management frames that we sent ourselves with status
2930 /* load the lower byte of the IEEE 802.11 frame control field */
2931 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2932 /* mask off frame type and version */
2933 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2934 /* accept frame if it's both 0, fall through otherwise */
2935 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2938 * TODO: add a bit to radiotap RX flags that indicates
2939 * that the sending station is not associated, then
2940 * add a filter here that filters on our DA and that flag
2941 * to allow us to deauth frames to that bad station.
2943 * Not a regression -- we didn't do it before either.
2948 * drop non-data frames
2950 /* load the lower byte of the frame control field */
2951 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2952 /* mask off QoS bit */
2953 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2954 /* drop non-data frames */
2955 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2957 /* load the upper byte of the frame control field */
2958 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
2959 /* mask off toDS/fromDS */
2960 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2961 /* accept WDS frames */
2962 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
2965 * add header length to index
2967 /* load the lower byte of the frame control field */
2968 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2969 /* mask off QoS bit */
2970 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2971 /* right shift it by 6 to give 0 or 2 */
2972 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2973 /* add data frame header length */
2974 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2975 /* add index, was start of 802.11 header */
2976 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2977 /* move to index, now start of LL header */
2978 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2981 * Accept empty data frames, we use those for
2984 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2985 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2988 * Accept EAPOL frames
2990 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2991 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2992 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2993 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2995 /* keep these last two statements or change the code below */
2996 /* return 0 == "DROP" */
2997 BPF_STMT(BPF_RET | BPF_K, 0),
2998 /* return ~0 == "keep all" */
2999 BPF_STMT(BPF_RET | BPF_K, ~0),
3002 static struct sock_fprog msock_filter = {
3003 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3004 .filter = msock_filter_insns,
3008 static int add_monitor_filter(int s)
3012 /* rewrite all PASS/FAIL jump offsets */
3013 for (idx = 0; idx < msock_filter.len; idx++) {
3014 struct sock_filter *insn = &msock_filter_insns[idx];
3016 if (BPF_CLASS(insn->code) == BPF_JMP) {
3017 if (insn->code == (BPF_JMP|BPF_JA)) {
3018 if (insn->k == PASS)
3019 insn->k = msock_filter.len - idx - 2;
3020 else if (insn->k == FAIL)
3021 insn->k = msock_filter.len - idx - 3;
3024 if (insn->jt == PASS)
3025 insn->jt = msock_filter.len - idx - 2;
3026 else if (insn->jt == FAIL)
3027 insn->jt = msock_filter.len - idx - 3;
3029 if (insn->jf == PASS)
3030 insn->jf = msock_filter.len - idx - 2;
3031 else if (insn->jf == FAIL)
3032 insn->jf = msock_filter.len - idx - 3;
3036 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3037 &msock_filter, sizeof(msock_filter))) {
3038 perror("SO_ATTACH_FILTER");
3046 static void nl80211_remove_monitor_interface(
3047 struct wpa_driver_nl80211_data *drv)
3049 if (drv->monitor_ifidx >= 0) {
3050 nl80211_remove_iface(drv, drv->monitor_ifidx);
3051 drv->monitor_ifidx = -1;
3053 if (drv->monitor_sock >= 0) {
3054 eloop_unregister_read_sock(drv->monitor_sock);
3055 close(drv->monitor_sock);
3056 drv->monitor_sock = -1;
3062 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3065 struct sockaddr_ll ll;
3069 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3070 buf[IFNAMSIZ - 1] = '\0';
3072 drv->monitor_ifidx =
3073 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3076 if (drv->monitor_ifidx < 0)
3079 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3082 memset(&ll, 0, sizeof(ll));
3083 ll.sll_family = AF_PACKET;
3084 ll.sll_ifindex = drv->monitor_ifidx;
3085 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3086 if (drv->monitor_sock < 0) {
3087 perror("socket[PF_PACKET,SOCK_RAW]");
3091 if (add_monitor_filter(drv->monitor_sock)) {
3092 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3093 "interface; do filtering in user space");
3094 /* This works, but will cost in performance. */
3097 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3098 perror("monitor socket bind");
3102 optlen = sizeof(optval);
3105 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3106 perror("Failed to set socket priority");
3110 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3112 printf("Could not register monitor read socket\n");
3118 nl80211_remove_monitor_interface(drv);
3123 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3125 static int wpa_driver_nl80211_hapd_send_eapol(
3126 void *priv, const u8 *addr, const u8 *data,
3127 size_t data_len, int encrypt, const u8 *own_addr)
3129 struct wpa_driver_nl80211_data *drv = priv;
3130 struct ieee80211_hdr *hdr;
3135 int qos = sta->flags & WPA_STA_WMM;
3140 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3142 hdr = os_zalloc(len);
3144 printf("malloc() failed for i802_send_data(len=%lu)\n",
3145 (unsigned long) len);
3149 hdr->frame_control =
3150 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3151 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3153 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3154 #if 0 /* To be enabled if qos determination is added above */
3156 hdr->frame_control |=
3157 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3161 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3162 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3163 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3164 pos = (u8 *) (hdr + 1);
3166 #if 0 /* To be enabled if qos determination is added above */
3168 /* add an empty QoS header if needed */
3175 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3176 pos += sizeof(rfc1042_header);
3177 WPA_PUT_BE16(pos, ETH_P_PAE);
3179 memcpy(pos, data, data_len);
3181 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3183 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3185 (unsigned long) len, errno, strerror(errno));
3193 static u32 sta_flags_nl80211(int flags)
3197 if (flags & WPA_STA_AUTHORIZED)
3198 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3199 if (flags & WPA_STA_WMM)
3200 f |= BIT(NL80211_STA_FLAG_WME);
3201 if (flags & WPA_STA_SHORT_PREAMBLE)
3202 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3203 if (flags & WPA_STA_MFP)
3204 f |= BIT(NL80211_STA_FLAG_MFP);
3210 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3211 int total_flags, int flags_or,
3214 struct wpa_driver_nl80211_data *drv = priv;
3215 struct nl_msg *msg, *flags = NULL;
3216 struct nl80211_sta_flag_update upd;
3218 msg = nlmsg_alloc();
3222 flags = nlmsg_alloc();
3228 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3229 0, NL80211_CMD_SET_STATION, 0);
3231 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3232 if_nametoindex(drv->ifname));
3233 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3236 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3237 * can be removed eventually.
3239 if (total_flags & WPA_STA_AUTHORIZED)
3240 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3242 if (total_flags & WPA_STA_WMM)
3243 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3245 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3246 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3248 if (total_flags & WPA_STA_MFP)
3249 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3251 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3252 goto nla_put_failure;
3254 os_memset(&upd, 0, sizeof(upd));
3255 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3256 upd.set = sta_flags_nl80211(flags_or);
3257 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3261 return send_and_recv_msgs(drv, msg, NULL, NULL);
3268 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3269 struct wpa_driver_associate_params *params)
3271 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3272 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3273 nl80211_remove_monitor_interface(drv);
3277 /* TODO: setup monitor interface (and add code somewhere to remove this
3278 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3284 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3289 msg = nlmsg_alloc();
3293 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3294 NL80211_CMD_LEAVE_IBSS, 0);
3295 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3296 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3299 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3300 "(%s)", ret, strerror(-ret));
3301 goto nla_put_failure;
3305 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3313 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3314 struct wpa_driver_associate_params *params)
3320 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3322 if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3323 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3329 msg = nlmsg_alloc();
3333 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3334 NL80211_CMD_JOIN_IBSS, 0);
3335 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3337 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3338 goto nla_put_failure;
3340 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3341 params->ssid, params->ssid_len);
3342 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3344 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3345 drv->ssid_len = params->ssid_len;
3347 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3348 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3350 ret = nl80211_set_conn_keys(params, msg);
3352 goto nla_put_failure;
3354 if (params->wpa_ie) {
3355 wpa_hexdump(MSG_DEBUG,
3356 " * Extra IEs for Beacon/Probe Response frames",
3357 params->wpa_ie, params->wpa_ie_len);
3358 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3362 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3365 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3366 ret, strerror(-ret));
3368 if (ret == -EALREADY && count == 1) {
3369 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3371 nl80211_leave_ibss(drv);
3376 goto nla_put_failure;
3379 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3387 static int wpa_driver_nl80211_connect(
3388 struct wpa_driver_nl80211_data *drv,
3389 struct wpa_driver_associate_params *params)
3392 enum nl80211_auth_type type;
3395 msg = nlmsg_alloc();
3399 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3400 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3401 NL80211_CMD_CONNECT, 0);
3403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3404 if (params->bssid) {
3405 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3406 MAC2STR(params->bssid));
3407 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3410 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3411 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3414 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3415 params->ssid, params->ssid_len);
3416 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3418 if (params->ssid_len > sizeof(drv->ssid))
3419 goto nla_put_failure;
3420 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3421 drv->ssid_len = params->ssid_len;
3423 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3425 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3428 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3429 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3430 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3431 type = NL80211_AUTHTYPE_SHARED_KEY;
3432 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3433 type = NL80211_AUTHTYPE_NETWORK_EAP;
3434 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3435 type = NL80211_AUTHTYPE_FT;
3437 goto nla_put_failure;
3439 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3440 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3442 if (params->wpa_ie && params->wpa_ie_len) {
3443 enum nl80211_wpa_versions ver;
3445 if (params->wpa_ie[0] == WLAN_EID_RSN)
3446 ver = NL80211_WPA_VERSION_2;
3448 ver = NL80211_WPA_VERSION_1;
3450 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3451 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3454 if (params->pairwise_suite != CIPHER_NONE) {
3457 switch (params->pairwise_suite) {
3459 cipher = WLAN_CIPHER_SUITE_WEP40;
3462 cipher = WLAN_CIPHER_SUITE_WEP104;
3465 cipher = WLAN_CIPHER_SUITE_CCMP;
3469 cipher = WLAN_CIPHER_SUITE_TKIP;
3472 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3475 if (params->group_suite != CIPHER_NONE) {
3478 switch (params->group_suite) {
3480 cipher = WLAN_CIPHER_SUITE_WEP40;
3483 cipher = WLAN_CIPHER_SUITE_WEP104;
3486 cipher = WLAN_CIPHER_SUITE_CCMP;
3490 cipher = WLAN_CIPHER_SUITE_TKIP;
3493 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3496 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3497 params->key_mgmt_suite == KEY_MGMT_PSK) {
3498 int mgmt = WLAN_AKM_SUITE_PSK;
3500 switch (params->key_mgmt_suite) {
3501 case KEY_MGMT_802_1X:
3502 mgmt = WLAN_AKM_SUITE_8021X;
3506 mgmt = WLAN_AKM_SUITE_PSK;
3509 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3512 ret = nl80211_set_conn_keys(params, msg);
3514 goto nla_put_failure;
3516 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3519 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3520 "(%s)", ret, strerror(-ret));
3521 goto nla_put_failure;
3524 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3533 static int wpa_driver_nl80211_associate(
3534 void *priv, struct wpa_driver_associate_params *params)
3536 struct wpa_driver_nl80211_data *drv = priv;
3540 if (params->mode == IEEE80211_MODE_AP)
3541 return wpa_driver_nl80211_ap(drv, params);
3543 if (params->mode == IEEE80211_MODE_IBSS)
3544 return wpa_driver_nl80211_ibss(drv, params);
3546 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3547 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3549 return wpa_driver_nl80211_connect(drv, params);
3552 drv->associated = 0;
3554 msg = nlmsg_alloc();
3558 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3560 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3561 NL80211_CMD_ASSOCIATE, 0);
3563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3564 if (params->bssid) {
3565 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3566 MAC2STR(params->bssid));
3567 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3570 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3571 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3572 drv->assoc_freq = params->freq;
3574 drv->assoc_freq = 0;
3576 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3577 params->ssid, params->ssid_len);
3578 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3580 if (params->ssid_len > sizeof(drv->ssid))
3581 goto nla_put_failure;
3582 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3583 drv->ssid_len = params->ssid_len;
3585 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3587 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3590 #ifdef CONFIG_IEEE80211W
3591 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3592 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3593 #endif /* CONFIG_IEEE80211W */
3595 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3597 if (params->prev_bssid) {
3598 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3599 MAC2STR(params->prev_bssid));
3600 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3601 params->prev_bssid);
3604 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3607 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3608 "(%s)", ret, strerror(-ret));
3609 nl80211_dump_scan(drv);
3610 goto nla_put_failure;
3613 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3622 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3623 int ifindex, int mode)
3628 msg = nlmsg_alloc();
3632 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3633 0, NL80211_CMD_SET_INTERFACE, 0);
3634 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3635 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3637 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3641 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3642 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3647 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3649 struct wpa_driver_nl80211_data *drv = priv;
3655 nlmode = NL80211_IFTYPE_STATION;
3658 nlmode = NL80211_IFTYPE_ADHOC;
3661 nlmode = NL80211_IFTYPE_AP;
3667 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3668 drv->nlmode = nlmode;
3673 if (nlmode == drv->nlmode) {
3674 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3675 "requested mode - ignore error");
3677 goto done; /* Already in the requested mode */
3680 /* mac80211 doesn't allow mode changes while the device is up, so
3681 * take the device down, try to set the mode again, and bring the
3684 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0) == 0) {
3685 /* Try to set the mode again while the interface is down */
3686 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3687 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
3692 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3693 "interface is down");
3694 drv->nlmode = nlmode;
3698 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3699 /* Setup additional AP mode functionality if needed */
3700 if (drv->monitor_ifidx < 0 &&
3701 nl80211_create_monitor_interface(drv))
3703 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3704 /* Remove additional AP mode functionality */
3705 nl80211_remove_monitor_interface(drv);
3707 drv->beacon_set = 0;
3708 #endif /* HOSTAPD */
3712 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3713 "from %d failed", nlmode, drv->nlmode);
3719 static int wpa_driver_nl80211_get_capa(void *priv,
3720 struct wpa_driver_capa *capa)
3722 struct wpa_driver_nl80211_data *drv = priv;
3723 if (!drv->has_capability)
3725 os_memcpy(capa, &drv->capa, sizeof(*capa));
3730 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3732 struct wpa_driver_nl80211_data *drv = priv;
3734 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3735 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3736 drv->operstate = state;
3737 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3738 state ? IF_OPER_UP : IF_OPER_DORMANT);
3742 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3744 struct wpa_driver_nl80211_data *drv = priv;
3746 struct nl80211_sta_flag_update upd;
3748 msg = nlmsg_alloc();
3752 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3753 0, NL80211_CMD_SET_STATION, 0);
3755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3756 if_nametoindex(drv->ifname));
3757 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3759 os_memset(&upd, 0, sizeof(upd));
3760 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3762 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3763 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3765 return send_and_recv_msgs(drv, msg, NULL, NULL);
3773 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3776 struct i802_bss *bss = &drv->bss;
3778 if (ifindex == bss->ifindex)
3782 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3787 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3792 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3794 for (i = 0; i < drv->num_if_indices; i++) {
3795 if (drv->if_indices[i] == 0) {
3796 drv->if_indices[i] = ifidx;
3801 if (drv->if_indices != drv->default_if_indices)
3802 old = drv->if_indices;
3806 drv->if_indices = os_realloc(old,
3807 sizeof(int) * (drv->num_if_indices + 1));
3808 if (!drv->if_indices) {
3810 drv->if_indices = drv->default_if_indices;
3812 drv->if_indices = old;
3813 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3815 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3818 drv->if_indices[drv->num_if_indices] = ifidx;
3819 drv->num_if_indices++;
3823 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3827 for (i = 0; i < drv->num_if_indices; i++) {
3828 if (drv->if_indices[i] == ifidx) {
3829 drv->if_indices[i] = 0;
3836 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3840 for (i = 0; i < drv->num_if_indices; i++)
3841 if (drv->if_indices[i] == ifidx)
3848 static inline int min_int(int a, int b)
3856 static int get_key_handler(struct nl_msg *msg, void *arg)
3858 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3859 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3861 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3862 genlmsg_attrlen(gnlh, 0), NULL);
3865 * TODO: validate the key index and mac address!
3866 * Otherwise, there's a race condition as soon as
3867 * the kernel starts sending key notifications.
3870 if (tb[NL80211_ATTR_KEY_SEQ])
3871 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3872 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3877 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3880 struct wpa_driver_nl80211_data *drv = priv;
3883 msg = nlmsg_alloc();
3887 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3888 0, NL80211_CMD_GET_KEY, 0);
3891 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3892 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3893 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3897 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3903 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3906 struct wpa_driver_nl80211_data *drv = priv;
3908 u8 rates[NL80211_MAX_SUPP_RATES];
3912 msg = nlmsg_alloc();
3916 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3917 NL80211_CMD_SET_BSS, 0);
3919 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3920 rates[rates_len++] = basic_rates[i] / 5;
3922 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3924 /* TODO: multi-BSS support */
3925 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3927 return send_and_recv_msgs(drv, msg, NULL, NULL);
3933 /* Set kernel driver on given frequency (MHz) */
3934 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3936 struct wpa_driver_nl80211_data *drv = priv;
3937 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3938 freq->sec_channel_offset);
3942 static int i802_set_rts(void *priv, int rts)
3944 struct wpa_driver_nl80211_data *drv = priv;
3949 msg = nlmsg_alloc();
3958 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3959 0, NL80211_CMD_SET_WIPHY, 0);
3960 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3961 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3963 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3967 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3968 "%d (%s)", rts, ret, strerror(-ret));
3973 static int i802_set_frag(void *priv, int frag)
3975 struct wpa_driver_nl80211_data *drv = priv;
3980 msg = nlmsg_alloc();
3989 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3990 0, NL80211_CMD_SET_WIPHY, 0);
3991 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3992 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3994 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3998 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3999 "%d: %d (%s)", frag, ret, strerror(-ret));
4004 static int i802_flush(void *priv)
4006 struct wpa_driver_nl80211_data *drv = priv;
4009 msg = nlmsg_alloc();
4013 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4014 0, NL80211_CMD_DEL_STATION, 0);
4017 * XXX: FIX! this needs to flush all VLANs too
4019 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4020 if_nametoindex(drv->ifname));
4022 return send_and_recv_msgs(drv, msg, NULL, NULL);
4028 static int get_sta_handler(struct nl_msg *msg, void *arg)
4030 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4031 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4032 struct hostap_sta_driver_data *data = arg;
4033 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4034 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4035 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4036 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4037 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4038 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4039 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4042 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4043 genlmsg_attrlen(gnlh, 0), NULL);
4046 * TODO: validate the interface and mac address!
4047 * Otherwise, there's a race condition as soon as
4048 * the kernel starts sending station notifications.
4051 if (!tb[NL80211_ATTR_STA_INFO]) {
4052 wpa_printf(MSG_DEBUG, "sta stats missing!");
4055 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4056 tb[NL80211_ATTR_STA_INFO],
4058 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4062 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4063 data->inactive_msec =
4064 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4065 if (stats[NL80211_STA_INFO_RX_BYTES])
4066 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4067 if (stats[NL80211_STA_INFO_TX_BYTES])
4068 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4069 if (stats[NL80211_STA_INFO_RX_PACKETS])
4071 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4072 if (stats[NL80211_STA_INFO_TX_PACKETS])
4074 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4079 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4082 struct wpa_driver_nl80211_data *drv = priv;
4085 os_memset(data, 0, sizeof(*data));
4086 msg = nlmsg_alloc();
4090 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4091 0, NL80211_CMD_GET_STATION, 0);
4093 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4094 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4096 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4102 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4103 int cw_min, int cw_max, int burst_time)
4105 struct wpa_driver_nl80211_data *drv = priv;
4107 struct nlattr *txq, *params;
4109 msg = nlmsg_alloc();
4113 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4114 0, NL80211_CMD_SET_WIPHY, 0);
4116 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4118 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4120 goto nla_put_failure;
4122 /* We are only sending parameters for a single TXQ at a time */
4123 params = nla_nest_start(msg, 1);
4125 goto nla_put_failure;
4127 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4128 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4129 * 32 usec, so need to convert the value here. */
4130 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4131 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4132 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4133 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4135 nla_nest_end(msg, params);
4137 nla_nest_end(msg, txq);
4139 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4146 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4148 struct wpa_driver_nl80211_data *drv = priv;
4151 msg = nlmsg_alloc();
4155 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4156 NL80211_CMD_SET_BSS, 0);
4159 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4161 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4163 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4165 /* TODO: multi-BSS support */
4166 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4168 return send_and_recv_msgs(drv, msg, NULL, NULL);
4174 static int i802_set_cts_protect(void *priv, int value)
4176 return i802_set_bss(priv, value, -1, -1);
4180 static int i802_set_preamble(void *priv, int value)
4182 return i802_set_bss(priv, -1, value, -1);
4186 static int i802_set_short_slot_time(void *priv, int value)
4188 return i802_set_bss(priv, -1, -1, value);
4192 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4193 const char *ifname, int vlan_id)
4195 struct wpa_driver_nl80211_data *drv = priv;
4198 msg = nlmsg_alloc();
4202 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4203 0, NL80211_CMD_SET_STATION, 0);
4205 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4206 if_nametoindex(drv->ifname));
4207 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4208 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4209 if_nametoindex(ifname));
4211 return send_and_recv_msgs(drv, msg, NULL, NULL);
4217 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4219 struct wpa_driver_nl80211_data *drv = priv;
4220 char name[IFNAMSIZ + 1];
4222 os_snprintf(name, sizeof(name), "%s.sta%d", drv->ifname, aid);
4223 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4224 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4226 if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN,
4229 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4230 return i802_set_sta_vlan(priv, addr, name, 0);
4232 i802_set_sta_vlan(priv, addr, drv->ifname, 0);
4233 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4239 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4241 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4242 struct sockaddr_ll lladdr;
4243 unsigned char buf[3000];
4245 socklen_t fromlen = sizeof(lladdr);
4247 len = recvfrom(sock, buf, sizeof(buf), 0,
4248 (struct sockaddr *)&lladdr, &fromlen);
4254 if (have_ifidx(drv, lladdr.sll_ifindex))
4255 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4259 static int i802_get_inact_sec(void *priv, const u8 *addr)
4261 struct hostap_sta_driver_data data;
4264 data.inactive_msec = (unsigned long) -1;
4265 ret = i802_read_sta_data(priv, &data, addr);
4266 if (ret || data.inactive_msec == (unsigned long) -1)
4268 return data.inactive_msec / 1000;
4272 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4281 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4284 struct wpa_driver_nl80211_data *drv = priv;
4285 struct ieee80211_mgmt mgmt;
4287 memset(&mgmt, 0, sizeof(mgmt));
4288 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4289 WLAN_FC_STYPE_DEAUTH);
4290 memcpy(mgmt.da, addr, ETH_ALEN);
4291 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4292 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4293 mgmt.u.deauth.reason_code = host_to_le16(reason);
4294 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4296 sizeof(mgmt.u.deauth));
4300 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4303 struct wpa_driver_nl80211_data *drv = priv;
4304 struct ieee80211_mgmt mgmt;
4306 memset(&mgmt, 0, sizeof(mgmt));
4307 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4308 WLAN_FC_STYPE_DISASSOC);
4309 memcpy(mgmt.da, addr, ETH_ALEN);
4310 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4311 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4312 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4313 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4315 sizeof(mgmt.u.disassoc));
4319 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4320 const char *brname, const char *ifname)
4323 char in_br[IFNAMSIZ];
4325 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4326 ifindex = if_nametoindex(brname);
4329 * Bridge was configured, but the bridge device does
4330 * not exist. Try to add it now.
4332 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4333 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4334 "bridge interface %s: %s",
4335 brname, strerror(errno));
4338 drv->added_bridge = 1;
4339 add_ifidx(drv, if_nametoindex(brname));
4342 if (linux_br_get(in_br, ifname) == 0) {
4343 if (os_strcmp(in_br, brname) == 0)
4344 return 0; /* already in the bridge */
4346 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4347 "bridge %s", ifname, in_br);
4348 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4349 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4350 "remove interface %s from bridge "
4352 ifname, brname, strerror(errno));
4357 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4359 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4360 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4361 "into bridge %s: %s",
4362 ifname, brname, strerror(errno));
4365 drv->added_if_into_bridge = 1;
4371 static void *i802_init(struct hostapd_data *hapd,
4372 struct wpa_init_params *params)
4374 struct wpa_driver_nl80211_data *drv;
4376 char brname[IFNAMSIZ];
4377 int ifindex, br_ifindex;
4380 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4384 drv->bss.ifindex = drv->ifindex;
4386 if (linux_br_get(brname, params->ifname) == 0) {
4387 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4388 params->ifname, brname);
4389 br_ifindex = if_nametoindex(brname);
4395 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4396 drv->if_indices = drv->default_if_indices;
4397 for (i = 0; i < params->num_bridge; i++) {
4398 if (params->bridge[i]) {
4399 ifindex = if_nametoindex(params->bridge[i]);
4401 add_ifidx(drv, ifindex);
4402 if (ifindex == br_ifindex)
4406 if (!br_added && br_ifindex &&
4407 (params->num_bridge == 0 || !params->bridge[0]))
4408 add_ifidx(drv, br_ifindex);
4410 /* start listening for EAPOL on the default AP interface */
4411 add_ifidx(drv, drv->ifindex);
4413 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0))
4416 if (params->bssid) {
4417 if (linux_set_ifhwaddr(drv->ioctl_sock, drv->ifname,
4422 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4423 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4424 "into AP mode", drv->ifname);
4428 if (params->num_bridge && params->bridge[0] &&
4429 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4432 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
4435 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4436 if (drv->eapol_sock < 0) {
4437 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4441 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4443 printf("Could not register read socket for eapol\n");
4447 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, params->own_addr))
4453 nl80211_remove_monitor_interface(drv);
4454 if (drv->ioctl_sock >= 0)
4455 close(drv->ioctl_sock);
4457 genl_family_put(drv->nl80211);
4458 nl_cache_free(drv->nl_cache);
4459 nl_handle_destroy(drv->nl_handle);
4460 nl_cb_put(drv->nl_cb);
4467 static void i802_deinit(void *priv)
4469 wpa_driver_nl80211_deinit(priv);
4472 #endif /* HOSTAPD */
4475 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4476 enum wpa_driver_if_type type)
4479 case WPA_IF_STATION:
4480 return NL80211_IFTYPE_STATION;
4481 case WPA_IF_AP_VLAN:
4482 return NL80211_IFTYPE_AP_VLAN;
4484 return NL80211_IFTYPE_AP;
4490 static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4491 enum wpa_driver_if_type type,
4492 const char *ifname, const u8 *addr,
4495 struct wpa_driver_nl80211_data *drv = priv;
4498 struct i802_bss *bss = NULL;
4500 if (type == WPA_IF_AP_BSS) {
4501 bss = os_zalloc(sizeof(*bss));
4505 #endif /* HOSTAPD */
4507 ifidx = nl80211_create_iface(drv, ifname,
4508 wpa_driver_nl80211_if_type(type), addr,
4513 #endif /* HOSTAPD */
4518 if (type == WPA_IF_AP_BSS) {
4519 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4520 nl80211_remove_iface(drv, ifidx);
4524 bss->ifindex = ifidx;
4525 bss->next = drv->bss.next;
4526 drv->bss.next = bss;
4528 #endif /* HOSTAPD */
4534 static int wpa_driver_nl80211_if_remove(void *priv,
4535 enum wpa_driver_if_type type,
4538 struct wpa_driver_nl80211_data *drv = priv;
4539 int ifindex = if_nametoindex(ifname);
4541 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4542 __func__, type, ifname, ifindex);
4545 nl80211_remove_iface(drv, ifindex);
4548 if (type == WPA_IF_AP_BSS) {
4549 struct i802_bss *bss, *prev;
4551 bss = drv->bss.next;
4553 if (ifindex == bss->ifindex) {
4554 prev->next = bss->next;
4562 #endif /* HOSTAPD */
4568 static int cookie_handler(struct nl_msg *msg, void *arg)
4570 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4571 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4573 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4574 genlmsg_attrlen(gnlh, 0), NULL);
4575 if (tb[NL80211_ATTR_COOKIE])
4576 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4581 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4582 unsigned int duration)
4584 struct wpa_driver_nl80211_data *drv = priv;
4589 msg = nlmsg_alloc();
4593 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4594 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4596 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4597 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4598 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4601 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4603 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4604 "0x%llx for freq=%u MHz duration=%u",
4605 (long long unsigned int) cookie, freq, duration);
4606 drv->remain_on_chan_cookie = cookie;
4609 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4610 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4616 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4618 struct wpa_driver_nl80211_data *drv = priv;
4622 if (!drv->pending_remain_on_chan) {
4623 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4628 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4630 (long long unsigned int) drv->remain_on_chan_cookie);
4632 msg = nlmsg_alloc();
4636 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4637 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4640 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4642 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4645 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4646 "%d (%s)", ret, strerror(-ret));
4652 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4655 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4656 if (drv->monitor_ifidx < 0)
4657 return; /* monitor interface already removed */
4659 if (drv->nlmode != NL80211_IFTYPE_STATION)
4660 return; /* not in station mode anymore */
4662 if (drv->probe_req_report)
4663 return; /* reporting enabled */
4665 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4666 "Probe Request reporting needed anymore");
4667 nl80211_remove_monitor_interface(drv);
4671 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4673 struct wpa_driver_nl80211_data *drv = priv;
4675 if (drv->nlmode != NL80211_IFTYPE_STATION) {
4676 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4677 "allowed in station mode (iftype=%d)",
4681 drv->probe_req_report = report;
4684 eloop_cancel_timeout(
4685 wpa_driver_nl80211_probe_req_report_timeout,
4687 if (drv->monitor_ifidx < 0 &&
4688 nl80211_create_monitor_interface(drv))
4692 * It takes a while to remove the monitor interface, so try to
4693 * avoid doing this if it is needed again shortly. Instead,
4694 * schedule the interface to be removed later if no need for it
4697 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4698 "to be removed after 10 seconds of no use");
4699 eloop_register_timeout(
4700 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4708 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
4711 struct wpa_driver_nl80211_data *drv = priv;
4716 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, addr) < 0)
4719 if (addr[0] & 0x02) {
4720 /* TODO: add support for generating multiple addresses */
4723 addr[0] = 0x02; /* locally administered */
4729 static void wpa_driver_nl80211_release_interface_addr(void *priv,
4732 /* TODO: keep list of allocated address and release them here */
4736 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
4737 int ifindex, int disabled)
4740 struct nlattr *bands, *band;
4743 msg = nlmsg_alloc();
4747 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4748 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
4749 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4751 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
4753 goto nla_put_failure;
4756 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
4757 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
4758 * rates. All 5 GHz rates are left enabled.
4760 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
4762 goto nla_put_failure;
4763 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
4764 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
4765 nla_nest_end(msg, band);
4767 nla_nest_end(msg, bands);
4769 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4772 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
4773 "(%s)", ret, strerror(-ret));
4784 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
4786 struct wpa_driver_nl80211_data *drv = priv;
4787 drv->disable_11b_rates = disabled;
4788 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
4792 static int wpa_driver_nl80211_deinit_ap(void *priv)
4794 struct wpa_driver_nl80211_data *drv = priv;
4795 if (drv->nlmode != NL80211_IFTYPE_AP)
4797 wpa_driver_nl80211_del_beacon(drv);
4798 return wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
4802 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4804 .desc = "Linux nl80211/cfg80211",
4805 .get_bssid = wpa_driver_nl80211_get_bssid,
4806 .get_ssid = wpa_driver_nl80211_get_ssid,
4807 .set_key = wpa_driver_nl80211_set_key,
4808 .scan2 = wpa_driver_nl80211_scan,
4809 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4810 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4811 .disassociate = wpa_driver_nl80211_disassociate,
4812 .authenticate = wpa_driver_nl80211_authenticate,
4813 .associate = wpa_driver_nl80211_associate,
4814 .init = wpa_driver_nl80211_init,
4815 .deinit = wpa_driver_nl80211_deinit,
4816 .get_capa = wpa_driver_nl80211_get_capa,
4817 .set_operstate = wpa_driver_nl80211_set_operstate,
4818 .set_supp_port = wpa_driver_nl80211_set_supp_port,
4819 .set_country = wpa_driver_nl80211_set_country,
4820 .set_beacon = wpa_driver_nl80211_set_beacon,
4821 .if_add = wpa_driver_nl80211_if_add,
4822 .if_remove = wpa_driver_nl80211_if_remove,
4823 .send_mlme = wpa_driver_nl80211_send_mlme,
4824 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4825 .sta_add = wpa_driver_nl80211_sta_add,
4826 .sta_remove = wpa_driver_nl80211_sta_remove,
4827 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4828 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4830 .hapd_init = i802_init,
4831 .hapd_deinit = i802_deinit,
4832 .get_seqnum = i802_get_seqnum,
4833 .flush = i802_flush,
4834 .read_sta_data = i802_read_sta_data,
4835 .sta_deauth = i802_sta_deauth,
4836 .sta_disassoc = i802_sta_disassoc,
4837 .get_inact_sec = i802_get_inact_sec,
4838 .sta_clear_stats = i802_sta_clear_stats,
4839 .set_freq = i802_set_freq,
4840 .set_rts = i802_set_rts,
4841 .set_frag = i802_set_frag,
4842 .set_rate_sets = i802_set_rate_sets,
4843 .set_cts_protect = i802_set_cts_protect,
4844 .set_preamble = i802_set_preamble,
4845 .set_short_slot_time = i802_set_short_slot_time,
4846 .set_tx_queue_params = i802_set_tx_queue_params,
4847 .set_sta_vlan = i802_set_sta_vlan,
4848 .set_wds_sta = i802_set_wds_sta,
4849 #endif /* HOSTAPD */
4850 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
4851 .cancel_remain_on_channel =
4852 wpa_driver_nl80211_cancel_remain_on_channel,
4853 .probe_req_report = wpa_driver_nl80211_probe_req_report,
4854 .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
4855 .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4856 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
4857 .deinit_ap = wpa_driver_nl80211_deinit_ap,