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) 2009-2010, 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"
40 /* libnl 2.0 compatibility code */
41 #define nl_handle nl_sock
42 #define nl_handle_alloc_cb nl_socket_alloc_cb
43 #define nl_handle_destroy nl_socket_free
44 #endif /* CONFIG_LIBNL20 */
48 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
51 #define IFF_DORMANT 0x20000 /* driver signals dormant */
54 #ifndef IF_OPER_DORMANT
55 #define IF_OPER_DORMANT 5
62 struct wpa_driver_nl80211_data *drv;
63 struct i802_bss *next;
65 char ifname[IFNAMSIZ + 1];
66 unsigned int beacon_set:1;
69 struct wpa_driver_nl80211_data {
71 struct netlink_data *netlink;
72 int ioctl_sock; /* socket for ioctl() use */
73 char brname[IFNAMSIZ];
77 struct rfkill_data *rfkill;
78 struct wpa_driver_capa capa;
83 int scan_complete_events;
85 struct nl_handle *nl_handle;
86 struct nl_handle *nl_handle_event;
87 struct nl_cache *nl_cache;
88 struct nl_cache *nl_cache_event;
90 struct genl_family *nl80211;
92 u8 auth_bssid[ETH_ALEN];
98 int ap_scan_as_station;
99 unsigned int assoc_freq;
103 int probe_req_report;
104 int disable_11b_rates;
106 unsigned int pending_remain_on_chan:1;
107 unsigned int pending_send_action:1;
108 unsigned int added_bridge:1;
109 unsigned int added_if_into_bridge:1;
111 u64 remain_on_chan_cookie;
112 u64 send_action_cookie;
114 struct wpa_driver_scan_filter *filter_ssids;
115 size_t num_filter_ssids;
117 struct i802_bss first_bss;
120 int eapol_sock; /* socket for EAPOL frames */
122 int default_if_indices[16];
132 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
134 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
136 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
137 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
138 const u8 *addr, int cmd, u16 reason_code,
139 int local_state_change);
140 static void nl80211_remove_monitor_interface(
141 struct wpa_driver_nl80211_data *drv);
144 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
145 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
146 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
147 static int wpa_driver_nl80211_if_remove(void *priv,
148 enum wpa_driver_if_type type,
151 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
157 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
158 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
160 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
161 int ifindex, int disabled);
165 static int ack_handler(struct nl_msg *msg, void *arg)
172 static int finish_handler(struct nl_msg *msg, void *arg)
179 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
188 static int no_seq_check(struct nl_msg *msg, void *arg)
194 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
195 struct nl_handle *nl_handle, struct nl_msg *msg,
196 int (*valid_handler)(struct nl_msg *, void *),
202 cb = nl_cb_clone(drv->nl_cb);
206 err = nl_send_auto_complete(nl_handle, msg);
212 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
213 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
214 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
217 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
218 valid_handler, valid_data);
221 nl_recvmsgs(nl_handle, cb);
229 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
231 int (*valid_handler)(struct nl_msg *, void *),
234 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
245 static int family_handler(struct nl_msg *msg, void *arg)
247 struct family_data *res = arg;
248 struct nlattr *tb[CTRL_ATTR_MAX + 1];
249 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
250 struct nlattr *mcgrp;
253 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
254 genlmsg_attrlen(gnlh, 0), NULL);
255 if (!tb[CTRL_ATTR_MCAST_GROUPS])
258 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
259 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
260 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
261 nla_len(mcgrp), NULL);
262 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
263 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
264 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
266 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
268 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
276 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
277 const char *family, const char *group)
281 struct family_data res = { group, -ENOENT };
286 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
287 0, 0, CTRL_CMD_GETFAMILY, 0);
288 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
290 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
301 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
303 struct i802_bss *bss = priv;
304 struct wpa_driver_nl80211_data *drv = bss->drv;
305 if (!drv->associated)
307 os_memcpy(bssid, drv->bssid, ETH_ALEN);
312 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
314 struct i802_bss *bss = priv;
315 struct wpa_driver_nl80211_data *drv = bss->drv;
316 if (!drv->associated)
318 os_memcpy(ssid, drv->ssid, drv->ssid_len);
319 return drv->ssid_len;
323 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
324 char *buf, size_t len, int del)
326 union wpa_event_data event;
328 os_memset(&event, 0, sizeof(event));
329 if (len > sizeof(event.interface_status.ifname))
330 len = sizeof(event.interface_status.ifname) - 1;
331 os_memcpy(event.interface_status.ifname, buf, len);
332 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
333 EVENT_INTERFACE_ADDED;
335 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
337 event.interface_status.ifname,
338 del ? "removed" : "added");
340 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
347 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
351 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
354 int attrlen, rta_len;
358 attr = (struct rtattr *) buf;
360 rta_len = RTA_ALIGN(sizeof(struct rtattr));
361 while (RTA_OK(attr, attrlen)) {
362 if (attr->rta_type == IFLA_IFNAME) {
363 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
369 attr = RTA_NEXT(attr, attrlen);
376 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
377 int ifindex, u8 *buf, size_t len)
379 if (drv->ifindex == ifindex)
382 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
383 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
384 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
386 wpa_driver_nl80211_finish_drv_init(drv);
394 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
395 struct ifinfomsg *ifi,
398 struct wpa_driver_nl80211_data *drv = ctx;
399 int attrlen, rta_len;
403 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
404 !have_ifidx(drv, ifi->ifi_index)) {
405 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
406 "ifindex %d", ifi->ifi_index);
410 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
412 drv->operstate, ifi->ifi_flags,
413 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
414 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
415 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
416 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
418 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
419 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
420 drv->if_disabled = 1;
421 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
424 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
425 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
426 drv->if_disabled = 0;
427 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
431 * Some drivers send the association event before the operup event--in
432 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
433 * fails. This will hit us when wpa_supplicant does not need to do
434 * IEEE 802.1X authentication
436 if (drv->operstate == 1 &&
437 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
438 !(ifi->ifi_flags & IFF_RUNNING))
439 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
443 attr = (struct rtattr *) buf;
444 rta_len = RTA_ALIGN(sizeof(struct rtattr));
445 while (RTA_OK(attr, attrlen)) {
446 if (attr->rta_type == IFLA_IFNAME) {
447 wpa_driver_nl80211_event_link(
449 ((char *) attr) + rta_len,
450 attr->rta_len - rta_len, 0);
451 } else if (attr->rta_type == IFLA_MASTER)
452 brid = nla_get_u32((struct nlattr *) attr);
453 attr = RTA_NEXT(attr, attrlen);
457 if (ifi->ifi_family == AF_BRIDGE && brid) {
458 /* device has been added to bridge */
459 char namebuf[IFNAMSIZ];
460 if_indextoname(brid, namebuf);
461 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
463 add_ifidx(drv, brid);
469 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
470 struct ifinfomsg *ifi,
473 struct wpa_driver_nl80211_data *drv = ctx;
474 int attrlen, rta_len;
479 attr = (struct rtattr *) buf;
481 rta_len = RTA_ALIGN(sizeof(struct rtattr));
482 while (RTA_OK(attr, attrlen)) {
483 if (attr->rta_type == IFLA_IFNAME) {
484 wpa_driver_nl80211_event_link(
486 ((char *) attr) + rta_len,
487 attr->rta_len - rta_len, 1);
488 } else if (attr->rta_type == IFLA_MASTER)
489 brid = nla_get_u32((struct nlattr *) attr);
490 attr = RTA_NEXT(attr, attrlen);
494 if (ifi->ifi_family == AF_BRIDGE && brid) {
495 /* device has been removed from bridge */
496 char namebuf[IFNAMSIZ];
497 if_indextoname(brid, namebuf);
498 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
499 "%s", brid, namebuf);
500 del_ifidx(drv, brid);
506 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
507 const u8 *frame, size_t len)
509 const struct ieee80211_mgmt *mgmt;
510 union wpa_event_data event;
512 mgmt = (const struct ieee80211_mgmt *) frame;
513 if (len < 24 + sizeof(mgmt->u.auth)) {
514 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
519 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
520 os_memset(&event, 0, sizeof(event));
521 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
522 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
523 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
524 if (len > 24 + sizeof(mgmt->u.auth)) {
525 event.auth.ies = mgmt->u.auth.variable;
526 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
529 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
533 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
534 const u8 *frame, size_t len)
536 const struct ieee80211_mgmt *mgmt;
537 union wpa_event_data event;
540 mgmt = (const struct ieee80211_mgmt *) frame;
541 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
542 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
547 status = le_to_host16(mgmt->u.assoc_resp.status_code);
548 if (status != WLAN_STATUS_SUCCESS) {
549 os_memset(&event, 0, sizeof(event));
550 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
551 event.assoc_reject.resp_ies =
552 (u8 *) mgmt->u.assoc_resp.variable;
553 event.assoc_reject.resp_ies_len =
554 len - 24 - sizeof(mgmt->u.assoc_resp);
556 event.assoc_reject.status_code = status;
558 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
563 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
565 os_memset(&event, 0, sizeof(event));
566 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
567 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
568 event.assoc_info.resp_ies_len =
569 len - 24 - sizeof(mgmt->u.assoc_resp);
572 event.assoc_info.freq = drv->assoc_freq;
574 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
578 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
579 enum nl80211_commands cmd, struct nlattr *status,
580 struct nlattr *addr, struct nlattr *req_ie,
581 struct nlattr *resp_ie)
583 union wpa_event_data event;
585 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
587 * Avoid reporting two association events that would confuse
590 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
591 "when using userspace SME", cmd);
595 os_memset(&event, 0, sizeof(event));
596 if (cmd == NL80211_CMD_CONNECT &&
597 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
599 event.assoc_reject.resp_ies = nla_data(resp_ie);
600 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
602 event.assoc_reject.status_code = nla_get_u16(status);
603 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
609 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
612 event.assoc_info.req_ies = nla_data(req_ie);
613 event.assoc_info.req_ies_len = nla_len(req_ie);
616 event.assoc_info.resp_ies = nla_data(resp_ie);
617 event.assoc_info.resp_ies_len = nla_len(resp_ie);
620 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
624 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
625 enum nl80211_commands cmd, struct nlattr *addr)
627 union wpa_event_data event;
628 enum wpa_event_type ev;
630 if (nla_len(addr) != ETH_ALEN)
633 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
634 cmd, MAC2STR((u8 *) nla_data(addr)));
636 if (cmd == NL80211_CMD_AUTHENTICATE)
637 ev = EVENT_AUTH_TIMED_OUT;
638 else if (cmd == NL80211_CMD_ASSOCIATE)
639 ev = EVENT_ASSOC_TIMED_OUT;
643 os_memset(&event, 0, sizeof(event));
644 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
645 wpa_supplicant_event(drv->ctx, ev, &event);
649 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
650 struct nlattr *freq, const u8 *frame, size_t len)
652 const struct ieee80211_mgmt *mgmt;
653 union wpa_event_data event;
656 mgmt = (const struct ieee80211_mgmt *) frame;
658 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
662 fc = le_to_host16(mgmt->frame_control);
663 stype = WLAN_FC_GET_STYPE(fc);
665 os_memset(&event, 0, sizeof(event));
666 event.rx_action.da = mgmt->da;
667 event.rx_action.sa = mgmt->sa;
668 event.rx_action.bssid = mgmt->bssid;
669 event.rx_action.category = mgmt->u.action.category;
670 event.rx_action.data = &mgmt->u.action.category + 1;
671 event.rx_action.len = frame + len - event.rx_action.data;
673 event.rx_action.freq = nla_get_u32(freq);
674 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
678 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
679 struct nlattr *cookie, const u8 *frame,
680 size_t len, struct nlattr *ack)
682 union wpa_event_data event;
683 const struct ieee80211_hdr *hdr;
690 cookie_val = nla_get_u64(cookie);
691 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
692 (long long unsigned int) cookie_val,
693 cookie_val == drv->send_action_cookie ?
694 " (match)" : " (unknown)");
695 if (cookie_val != drv->send_action_cookie)
698 hdr = (const struct ieee80211_hdr *) frame;
699 fc = le_to_host16(hdr->frame_control);
701 os_memset(&event, 0, sizeof(event));
702 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
703 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
704 event.tx_status.dst = hdr->addr1;
705 event.tx_status.data = frame;
706 event.tx_status.data_len = len;
707 event.tx_status.ack = ack != NULL;
708 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
712 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
713 enum wpa_event_type type,
714 const u8 *frame, size_t len)
716 const struct ieee80211_mgmt *mgmt;
717 union wpa_event_data event;
718 const u8 *bssid = NULL;
722 os_memset(&event, 0, sizeof(event));
724 mgmt = (const struct ieee80211_mgmt *) frame;
727 /* Note: Same offset for Reason Code in both frame subtypes */
728 if (len >= 24 + sizeof(mgmt->u.deauth))
729 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
731 if (type == EVENT_DISASSOC) {
732 event.disassoc_info.addr = bssid;
733 event.disassoc_info.reason_code = reason_code;
735 event.deauth_info.addr = bssid;
736 event.deauth_info.reason_code = reason_code;
739 wpa_supplicant_event(drv->ctx, type, &event);
743 static void mlme_event(struct wpa_driver_nl80211_data *drv,
744 enum nl80211_commands cmd, struct nlattr *frame,
745 struct nlattr *addr, struct nlattr *timed_out,
746 struct nlattr *freq, struct nlattr *ack,
747 struct nlattr *cookie)
749 if (timed_out && addr) {
750 mlme_timeout_event(drv, cmd, addr);
755 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
760 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
761 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
762 nla_data(frame), nla_len(frame));
765 case NL80211_CMD_AUTHENTICATE:
766 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
768 case NL80211_CMD_ASSOCIATE:
769 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
771 case NL80211_CMD_DEAUTHENTICATE:
772 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
773 nla_data(frame), nla_len(frame));
775 case NL80211_CMD_DISASSOCIATE:
776 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
777 nla_data(frame), nla_len(frame));
779 case NL80211_CMD_ACTION:
780 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
782 case NL80211_CMD_ACTION_TX_STATUS:
783 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
784 nla_len(frame), ack);
792 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
795 union wpa_event_data data;
797 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
798 os_memset(&data, 0, sizeof(data));
799 if (tb[NL80211_ATTR_MAC]) {
800 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
801 nla_data(tb[NL80211_ATTR_MAC]),
802 nla_len(tb[NL80211_ATTR_MAC]));
803 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
805 if (tb[NL80211_ATTR_KEY_SEQ]) {
806 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
807 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
808 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
810 if (tb[NL80211_ATTR_KEY_TYPE]) {
811 enum nl80211_key_type key_type =
812 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
813 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
814 if (key_type == NL80211_KEYTYPE_PAIRWISE)
815 data.michael_mic_failure.unicast = 1;
817 data.michael_mic_failure.unicast = 1;
819 if (tb[NL80211_ATTR_KEY_IDX]) {
820 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
821 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
824 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
828 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
831 if (tb[NL80211_ATTR_MAC] == NULL) {
832 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
836 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
838 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
839 MAC2STR(drv->bssid));
841 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
845 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
846 int cancel_event, struct nlattr *tb[])
848 unsigned int freq, chan_type, duration;
849 union wpa_event_data data;
852 if (tb[NL80211_ATTR_WIPHY_FREQ])
853 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
857 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
858 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
862 if (tb[NL80211_ATTR_DURATION])
863 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
867 if (tb[NL80211_ATTR_COOKIE])
868 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
872 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
873 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
874 cancel_event, freq, chan_type, duration,
875 (long long unsigned int) cookie,
876 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
878 if (cookie != drv->remain_on_chan_cookie)
879 return; /* not for us */
881 drv->pending_remain_on_chan = !cancel_event;
883 os_memset(&data, 0, sizeof(data));
884 data.remain_on_channel.freq = freq;
885 data.remain_on_channel.duration = duration;
886 wpa_supplicant_event(drv->ctx, cancel_event ?
887 EVENT_CANCEL_REMAIN_ON_CHANNEL :
888 EVENT_REMAIN_ON_CHANNEL, &data);
892 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
895 union wpa_event_data event;
898 struct scan_info *info;
899 #define MAX_REPORT_FREQS 50
900 int freqs[MAX_REPORT_FREQS];
903 os_memset(&event, 0, sizeof(event));
904 info = &event.scan_info;
905 info->aborted = aborted;
907 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
908 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
909 struct wpa_driver_scan_ssid *s =
910 &info->ssids[info->num_ssids];
911 s->ssid = nla_data(nl);
912 s->ssid_len = nla_len(nl);
914 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
918 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
919 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
921 freqs[num_freqs] = nla_get_u32(nl);
923 if (num_freqs == MAX_REPORT_FREQS - 1)
927 info->num_freqs = num_freqs;
929 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
933 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
936 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
937 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
938 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
939 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
941 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
942 enum nl80211_cqm_rssi_threshold_event event;
943 union wpa_event_data ed;
945 if (tb[NL80211_ATTR_CQM] == NULL ||
946 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
948 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
952 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
954 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
956 os_memset(&ed, 0, sizeof(ed));
958 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
959 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
961 ed.signal_change.above_threshold = 1;
962 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
963 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
965 ed.signal_change.above_threshold = 0;
969 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
973 static int process_event(struct nl_msg *msg, void *arg)
975 struct wpa_driver_nl80211_data *drv = arg;
976 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
977 struct nlattr *tb[NL80211_ATTR_MAX + 1];
978 union wpa_event_data data;
980 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
981 genlmsg_attrlen(gnlh, 0), NULL);
983 if (tb[NL80211_ATTR_IFINDEX]) {
984 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
985 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
986 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
987 " for foreign interface (ifindex %d)",
993 if (drv->ap_scan_as_station &&
994 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
995 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
996 wpa_driver_nl80211_set_mode(&drv->first_bss,
998 drv->ap_scan_as_station = 0;
1001 switch (gnlh->cmd) {
1002 case NL80211_CMD_TRIGGER_SCAN:
1003 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1005 case NL80211_CMD_NEW_SCAN_RESULTS:
1006 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1007 drv->scan_complete_events = 1;
1008 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1010 send_scan_event(drv, 0, tb);
1012 case NL80211_CMD_SCAN_ABORTED:
1013 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1015 * Need to indicate that scan results are available in order
1016 * not to make wpa_supplicant stop its scanning.
1018 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1020 send_scan_event(drv, 1, tb);
1022 case NL80211_CMD_AUTHENTICATE:
1023 case NL80211_CMD_ASSOCIATE:
1024 case NL80211_CMD_DEAUTHENTICATE:
1025 case NL80211_CMD_DISASSOCIATE:
1026 case NL80211_CMD_ACTION:
1027 case NL80211_CMD_ACTION_TX_STATUS:
1028 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1029 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1030 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1031 tb[NL80211_ATTR_COOKIE]);
1033 case NL80211_CMD_CONNECT:
1034 case NL80211_CMD_ROAM:
1035 mlme_event_connect(drv, gnlh->cmd,
1036 tb[NL80211_ATTR_STATUS_CODE],
1037 tb[NL80211_ATTR_MAC],
1038 tb[NL80211_ATTR_REQ_IE],
1039 tb[NL80211_ATTR_RESP_IE]);
1041 case NL80211_CMD_DISCONNECT:
1042 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1044 * Avoid reporting two disassociation events that could
1045 * confuse the core code.
1047 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1048 "event when using userspace SME");
1051 drv->associated = 0;
1052 os_memset(&data, 0, sizeof(data));
1053 if (tb[NL80211_ATTR_REASON_CODE])
1054 data.disassoc_info.reason_code =
1055 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1056 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1058 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1059 mlme_event_michael_mic_failure(drv, tb);
1061 case NL80211_CMD_JOIN_IBSS:
1062 mlme_event_join_ibss(drv, tb);
1064 case NL80211_CMD_REMAIN_ON_CHANNEL:
1065 mlme_event_remain_on_channel(drv, 0, tb);
1067 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1068 mlme_event_remain_on_channel(drv, 1, tb);
1070 case NL80211_CMD_NOTIFY_CQM:
1071 nl80211_cqm_event(drv, tb);
1074 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1075 "(cmd=%d)", gnlh->cmd);
1083 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1087 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1089 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1091 cb = nl_cb_clone(drv->nl_cb);
1094 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1095 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1096 nl_recvmsgs(drv->nl_handle_event, cb);
1102 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1103 * @priv: driver_nl80211 private data
1104 * @alpha2_arg: country to which to switch to
1105 * Returns: 0 on success, -1 on failure
1107 * This asks nl80211 to set the regulatory domain for given
1108 * country ISO / IEC alpha2.
1110 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1112 struct i802_bss *bss = priv;
1113 struct wpa_driver_nl80211_data *drv = bss->drv;
1117 msg = nlmsg_alloc();
1121 alpha2[0] = alpha2_arg[0];
1122 alpha2[1] = alpha2_arg[1];
1125 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1126 0, NL80211_CMD_REQ_SET_REG, 0);
1128 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1129 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1138 struct wiphy_info_data {
1142 int connect_supported;
1146 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1148 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1149 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1150 struct wiphy_info_data *info = arg;
1152 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1153 genlmsg_attrlen(gnlh, 0), NULL);
1155 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1156 info->max_scan_ssids =
1157 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1159 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1160 struct nlattr *nl_mode;
1162 nla_for_each_nested(nl_mode,
1163 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1164 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1165 info->ap_supported = 1;
1171 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1172 struct nlattr *nl_cmd;
1175 nla_for_each_nested(nl_cmd,
1176 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1177 u32 cmd = nla_get_u32(nl_cmd);
1178 if (cmd == NL80211_CMD_AUTHENTICATE)
1179 info->auth_supported = 1;
1180 else if (cmd == NL80211_CMD_CONNECT)
1181 info->connect_supported = 1;
1189 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1190 struct wiphy_info_data *info)
1194 os_memset(info, 0, sizeof(*info));
1195 msg = nlmsg_alloc();
1199 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1200 0, NL80211_CMD_GET_WIPHY, 0);
1202 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1204 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1213 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1215 struct wiphy_info_data info;
1216 if (wpa_driver_nl80211_get_info(drv, &info))
1218 drv->has_capability = 1;
1219 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1220 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1221 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1222 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1223 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1224 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1225 WPA_DRIVER_CAPA_ENC_WEP104 |
1226 WPA_DRIVER_CAPA_ENC_TKIP |
1227 WPA_DRIVER_CAPA_ENC_CCMP;
1228 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1229 WPA_DRIVER_AUTH_SHARED |
1230 WPA_DRIVER_AUTH_LEAP;
1232 drv->capa.max_scan_ssids = info.max_scan_ssids;
1233 if (info.ap_supported)
1234 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1236 if (info.auth_supported)
1237 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1238 else if (!info.connect_supported) {
1239 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1240 "authentication/association or connect commands");
1244 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1245 drv->capa.max_remain_on_chan = 5000;
1249 #endif /* HOSTAPD */
1252 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1257 /* Initialize generic netlink and nl80211 */
1259 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1260 if (drv->nl_cb == NULL) {
1261 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1266 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1267 if (drv->nl_handle == NULL) {
1268 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1273 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1274 if (drv->nl_handle_event == NULL) {
1275 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1276 "callbacks (event)");
1280 if (genl_connect(drv->nl_handle)) {
1281 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1286 if (genl_connect(drv->nl_handle_event)) {
1287 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1292 #ifdef CONFIG_LIBNL20
1293 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1294 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1298 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1300 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1301 "netlink cache (event)");
1304 #else /* CONFIG_LIBNL20 */
1305 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1306 if (drv->nl_cache == NULL) {
1307 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1311 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1312 if (drv->nl_cache_event == NULL) {
1313 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1314 "netlink cache (event)");
1317 #endif /* CONFIG_LIBNL20 */
1319 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1320 if (drv->nl80211 == NULL) {
1321 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1326 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1328 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1330 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1331 "membership for scan events: %d (%s)",
1332 ret, strerror(-ret));
1336 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1338 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1340 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1341 "membership for mlme events: %d (%s)",
1342 ret, strerror(-ret));
1346 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1347 wpa_driver_nl80211_event_receive, drv, ctx);
1352 nl_cache_free(drv->nl_cache_event);
1354 nl_cache_free(drv->nl_cache);
1356 nl_handle_destroy(drv->nl_handle_event);
1358 nl_handle_destroy(drv->nl_handle);
1360 nl_cb_put(drv->nl_cb);
1366 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1368 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1370 * This may be for any interface; use ifdown event to disable
1376 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1378 struct wpa_driver_nl80211_data *drv = ctx;
1379 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1380 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1381 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1382 "after rfkill unblock");
1385 /* rtnetlink ifup handler will report interface as enabled */
1390 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1391 * @ctx: context to be used when calling wpa_supplicant functions,
1392 * e.g., wpa_supplicant_event()
1393 * @ifname: interface name, e.g., wlan0
1394 * Returns: Pointer to private data, %NULL on failure
1396 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1398 struct wpa_driver_nl80211_data *drv;
1399 struct netlink_config *cfg;
1400 struct rfkill_config *rcfg;
1401 struct i802_bss *bss;
1403 drv = os_zalloc(sizeof(*drv));
1407 bss = &drv->first_bss;
1409 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1410 drv->monitor_ifidx = -1;
1411 drv->monitor_sock = -1;
1412 drv->ioctl_sock = -1;
1414 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1419 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1420 if (drv->ioctl_sock < 0) {
1421 perror("socket(PF_INET,SOCK_DGRAM)");
1425 cfg = os_zalloc(sizeof(*cfg));
1429 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1430 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1431 drv->netlink = netlink_init(cfg);
1432 if (drv->netlink == NULL) {
1437 rcfg = os_zalloc(sizeof(*rcfg));
1441 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1442 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1443 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1444 drv->rfkill = rfkill_init(rcfg);
1445 if (drv->rfkill == NULL) {
1446 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1450 if (wpa_driver_nl80211_finish_drv_init(drv))
1456 rfkill_deinit(drv->rfkill);
1457 netlink_deinit(drv->netlink);
1458 if (drv->ioctl_sock >= 0)
1459 close(drv->ioctl_sock);
1461 genl_family_put(drv->nl80211);
1462 nl_cache_free(drv->nl_cache);
1463 nl_handle_destroy(drv->nl_handle);
1464 nl_cb_put(drv->nl_cb);
1465 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1472 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1473 const u8 *match, size_t match_len)
1478 msg = nlmsg_alloc();
1482 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1483 NL80211_CMD_REGISTER_ACTION, 0);
1485 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1486 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1488 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1491 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1492 "failed: ret=%d (%s)", ret, strerror(-ret));
1493 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1495 goto nla_put_failure;
1504 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1506 /* FT Action frames */
1507 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1510 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1511 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1517 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1519 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1524 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1526 struct i802_bss *bss = &drv->first_bss;
1527 int send_rfkill_event = 0;
1529 drv->ifindex = if_nametoindex(bss->ifname);
1530 drv->first_bss.ifindex = drv->ifindex;
1533 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1534 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1535 "use managed mode");
1538 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1539 if (rfkill_is_blocked(drv->rfkill)) {
1540 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1541 "interface '%s' due to rfkill",
1543 drv->if_disabled = 1;
1544 send_rfkill_event = 1;
1546 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1547 "interface '%s' UP", bss->ifname);
1552 if (wpa_driver_nl80211_capa(drv))
1555 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1556 1, IF_OPER_DORMANT);
1557 #endif /* HOSTAPD */
1559 if (nl80211_register_action_frames(drv) < 0) {
1560 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1561 "frame processing - ignore for now");
1563 * Older kernel versions did not support this, so ignore the
1564 * error for now. Some functionality may not be available
1569 if (send_rfkill_event) {
1570 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1578 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1582 msg = nlmsg_alloc();
1586 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1587 0, NL80211_CMD_DEL_BEACON, 0);
1588 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1590 return send_and_recv_msgs(drv, msg, NULL, NULL);
1597 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1598 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1600 * Shut down driver interface and processing of driver events. Free
1601 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1603 static void wpa_driver_nl80211_deinit(void *priv)
1605 struct i802_bss *bss = priv;
1606 struct wpa_driver_nl80211_data *drv = bss->drv;
1608 if (drv->added_if_into_bridge) {
1609 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1611 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1612 "interface %s from bridge %s: %s",
1613 bss->ifname, drv->brname, strerror(errno));
1615 if (drv->added_bridge) {
1616 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1617 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1619 drv->brname, strerror(errno));
1622 nl80211_remove_monitor_interface(drv);
1624 if (drv->nlmode == NL80211_IFTYPE_AP)
1625 wpa_driver_nl80211_del_beacon(drv);
1628 if (drv->last_freq_ht) {
1629 /* Clear HT flags from the driver */
1630 struct hostapd_freq_params freq;
1631 os_memset(&freq, 0, sizeof(freq));
1632 freq.freq = drv->last_freq;
1633 i802_set_freq(priv, &freq);
1636 if (drv->eapol_sock >= 0) {
1637 eloop_unregister_read_sock(drv->eapol_sock);
1638 close(drv->eapol_sock);
1641 if (drv->if_indices != drv->default_if_indices)
1642 os_free(drv->if_indices);
1643 #endif /* HOSTAPD */
1645 if (drv->disable_11b_rates)
1646 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1648 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1649 netlink_deinit(drv->netlink);
1650 rfkill_deinit(drv->rfkill);
1652 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1654 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1655 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1657 if (drv->ioctl_sock >= 0)
1658 close(drv->ioctl_sock);
1660 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1661 genl_family_put(drv->nl80211);
1662 nl_cache_free(drv->nl_cache);
1663 nl_cache_free(drv->nl_cache_event);
1664 nl_handle_destroy(drv->nl_handle);
1665 nl_handle_destroy(drv->nl_handle_event);
1666 nl_cb_put(drv->nl_cb);
1668 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1671 os_free(drv->filter_ssids);
1678 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1679 * @eloop_ctx: Driver private data
1680 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1682 * This function can be used as registered timeout when starting a scan to
1683 * generate a scan completed event if the driver does not report this.
1685 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1687 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1688 if (drv->ap_scan_as_station) {
1689 wpa_driver_nl80211_set_mode(&drv->first_bss,
1691 drv->ap_scan_as_station = 0;
1693 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1694 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1699 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1700 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1701 * @params: Scan parameters
1702 * Returns: 0 on success, -1 on failure
1704 static int wpa_driver_nl80211_scan(void *priv,
1705 struct wpa_driver_scan_params *params)
1707 struct i802_bss *bss = priv;
1708 struct wpa_driver_nl80211_data *drv = bss->drv;
1709 int ret = 0, timeout;
1710 struct nl_msg *msg, *ssids, *freqs;
1713 msg = nlmsg_alloc();
1714 ssids = nlmsg_alloc();
1715 freqs = nlmsg_alloc();
1716 if (!msg || !ssids || !freqs) {
1723 os_free(drv->filter_ssids);
1724 drv->filter_ssids = params->filter_ssids;
1725 params->filter_ssids = NULL;
1726 drv->num_filter_ssids = params->num_filter_ssids;
1728 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1729 NL80211_CMD_TRIGGER_SCAN, 0);
1731 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1733 for (i = 0; i < params->num_ssids; i++) {
1734 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1735 params->ssids[i].ssid,
1736 params->ssids[i].ssid_len);
1737 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1738 params->ssids[i].ssid);
1740 if (params->num_ssids)
1741 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1743 if (params->extra_ies) {
1744 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1745 params->extra_ies, params->extra_ies_len);
1746 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1750 if (params->freqs) {
1751 for (i = 0; params->freqs[i]; i++) {
1752 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1753 "MHz", params->freqs[i]);
1754 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1756 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1759 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1762 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1763 "(%s)", ret, strerror(-ret));
1765 if (drv->nlmode == NL80211_IFTYPE_AP) {
1767 * mac80211 does not allow scan requests in AP mode, so
1768 * try to do this in station mode.
1770 if (wpa_driver_nl80211_set_mode(bss,
1771 IEEE80211_MODE_INFRA))
1772 goto nla_put_failure;
1774 if (wpa_driver_nl80211_scan(drv, params)) {
1775 wpa_driver_nl80211_set_mode(bss,
1777 goto nla_put_failure;
1780 /* Restore AP mode when processing scan results */
1781 drv->ap_scan_as_station = 1;
1784 goto nla_put_failure;
1786 goto nla_put_failure;
1787 #endif /* HOSTAPD */
1790 /* Not all drivers generate "scan completed" wireless event, so try to
1791 * read results after a timeout. */
1793 if (drv->scan_complete_events) {
1795 * The driver seems to deliver events to notify when scan is
1796 * complete, so use longer timeout to avoid race conditions
1797 * with scanning and following association request.
1801 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1802 "seconds", ret, timeout);
1803 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1804 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1815 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1817 const u8 *end, *pos;
1823 end = ies + ies_len;
1825 while (pos + 1 < end) {
1826 if (pos + 2 + pos[1] > end)
1837 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1838 const u8 *ie, size_t ie_len)
1843 if (drv->filter_ssids == NULL)
1846 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1850 for (i = 0; i < drv->num_filter_ssids; i++) {
1851 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1852 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1861 struct nl80211_bss_info_arg {
1862 struct wpa_driver_nl80211_data *drv;
1863 struct wpa_scan_results *res;
1866 static int bss_info_handler(struct nl_msg *msg, void *arg)
1868 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1869 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1870 struct nlattr *bss[NL80211_BSS_MAX + 1];
1871 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1872 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1873 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1874 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1875 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1876 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1877 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1878 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1879 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1880 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1881 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1882 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1884 struct nl80211_bss_info_arg *_arg = arg;
1885 struct wpa_scan_results *res = _arg->res;
1886 struct wpa_scan_res **tmp;
1887 struct wpa_scan_res *r;
1888 const u8 *ie, *beacon_ie;
1889 size_t ie_len, beacon_ie_len;
1892 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1893 genlmsg_attrlen(gnlh, 0), NULL);
1894 if (!tb[NL80211_ATTR_BSS])
1896 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1899 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1900 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1901 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1906 if (bss[NL80211_BSS_BEACON_IES]) {
1907 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1908 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1914 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1915 ie ? ie_len : beacon_ie_len))
1918 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1921 if (bss[NL80211_BSS_BSSID])
1922 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1924 if (bss[NL80211_BSS_FREQUENCY])
1925 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1926 if (bss[NL80211_BSS_BEACON_INTERVAL])
1927 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1928 if (bss[NL80211_BSS_CAPABILITY])
1929 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1930 r->flags |= WPA_SCAN_NOISE_INVALID;
1931 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1932 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1933 r->level /= 100; /* mBm to dBm */
1934 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1935 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1936 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1937 r->flags |= WPA_SCAN_LEVEL_INVALID;
1939 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1940 if (bss[NL80211_BSS_TSF])
1941 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1942 if (bss[NL80211_BSS_SEEN_MS_AGO])
1943 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1945 pos = (u8 *) (r + 1);
1947 os_memcpy(pos, ie, ie_len);
1950 r->beacon_ie_len = beacon_ie_len;
1952 os_memcpy(pos, beacon_ie, beacon_ie_len);
1954 if (bss[NL80211_BSS_STATUS]) {
1955 enum nl80211_bss_status status;
1956 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1958 case NL80211_BSS_STATUS_AUTHENTICATED:
1959 r->flags |= WPA_SCAN_AUTHENTICATED;
1961 case NL80211_BSS_STATUS_ASSOCIATED:
1962 r->flags |= WPA_SCAN_ASSOCIATED;
1969 tmp = os_realloc(res->res,
1970 (res->num + 1) * sizeof(struct wpa_scan_res *));
1975 tmp[res->num++] = r;
1982 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1985 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1986 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1987 "mismatch (" MACSTR ")", MAC2STR(addr));
1988 wpa_driver_nl80211_mlme(drv, addr,
1989 NL80211_CMD_DEAUTHENTICATE,
1990 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
1995 static void wpa_driver_nl80211_check_bss_status(
1996 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2000 for (i = 0; i < res->num; i++) {
2001 struct wpa_scan_res *r = res->res[i];
2002 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2003 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2004 "indicates BSS status with " MACSTR
2005 " as authenticated",
2007 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2008 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2009 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2011 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2012 " in local state (auth=" MACSTR
2013 " assoc=" MACSTR ")",
2014 MAC2STR(drv->auth_bssid),
2015 MAC2STR(drv->bssid));
2016 clear_state_mismatch(drv, r->bssid);
2020 if (r->flags & WPA_SCAN_ASSOCIATED) {
2021 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2022 "indicate BSS status with " MACSTR
2025 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2027 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2028 "(not associated) does not match "
2030 clear_state_mismatch(drv, r->bssid);
2031 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2032 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2034 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2035 "(associated with " MACSTR ") does "
2036 "not match with BSS state",
2037 MAC2STR(drv->bssid));
2038 clear_state_mismatch(drv, r->bssid);
2039 clear_state_mismatch(drv, drv->bssid);
2046 static void wpa_scan_results_free(struct wpa_scan_results *res)
2053 for (i = 0; i < res->num; i++)
2054 os_free(res->res[i]);
2060 static struct wpa_scan_results *
2061 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2064 struct wpa_scan_results *res;
2066 struct nl80211_bss_info_arg arg;
2068 res = os_zalloc(sizeof(*res));
2071 msg = nlmsg_alloc();
2073 goto nla_put_failure;
2075 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2076 NL80211_CMD_GET_SCAN, 0);
2077 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2081 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2084 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2085 (unsigned long) res->num);
2088 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2089 "(%s)", ret, strerror(-ret));
2092 wpa_scan_results_free(res);
2098 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2099 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2100 * Returns: Scan results on success, -1 on failure
2102 static struct wpa_scan_results *
2103 wpa_driver_nl80211_get_scan_results(void *priv)
2105 struct i802_bss *bss = priv;
2106 struct wpa_driver_nl80211_data *drv = bss->drv;
2107 struct wpa_scan_results *res;
2109 res = nl80211_get_scan_results(drv);
2111 wpa_driver_nl80211_check_bss_status(drv, res);
2116 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2118 struct wpa_scan_results *res;
2121 res = nl80211_get_scan_results(drv);
2123 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2127 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2128 for (i = 0; i < res->num; i++) {
2129 struct wpa_scan_res *r = res->res[i];
2130 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2131 (int) i, (int) res->num, MAC2STR(r->bssid),
2132 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2133 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2136 wpa_scan_results_free(res);
2140 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2141 enum wpa_alg alg, const u8 *addr,
2142 int key_idx, int set_tx,
2143 const u8 *seq, size_t seq_len,
2144 const u8 *key, size_t key_len)
2146 struct i802_bss *bss = priv;
2147 struct wpa_driver_nl80211_data *drv = bss->drv;
2148 int ifindex = if_nametoindex(ifname);
2152 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2153 "set_tx=%d seq_len=%lu key_len=%lu",
2154 __func__, ifindex, alg, addr, key_idx, set_tx,
2155 (unsigned long) seq_len, (unsigned long) key_len);
2157 msg = nlmsg_alloc();
2161 if (alg == WPA_ALG_NONE) {
2162 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2163 0, NL80211_CMD_DEL_KEY, 0);
2165 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2166 0, NL80211_CMD_NEW_KEY, 0);
2167 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2171 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2172 WLAN_CIPHER_SUITE_WEP40);
2174 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2175 WLAN_CIPHER_SUITE_WEP104);
2178 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2179 WLAN_CIPHER_SUITE_TKIP);
2182 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2183 WLAN_CIPHER_SUITE_CCMP);
2186 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2187 WLAN_CIPHER_SUITE_AES_CMAC);
2190 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2191 "algorithm %d", __func__, alg);
2198 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2200 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2202 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2203 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2205 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2206 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2208 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2209 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2212 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2213 ret, strerror(-ret));
2216 * If we failed or don't need to set the default TX key (below),
2219 if (ret || !set_tx || alg == WPA_ALG_NONE)
2225 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2227 #endif /* HOSTAPD */
2229 msg = nlmsg_alloc();
2233 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2234 0, NL80211_CMD_SET_KEY, 0);
2235 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2236 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2237 if (alg == WPA_ALG_IGTK)
2238 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2240 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2242 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2246 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2247 "err=%d %s)", ret, strerror(-ret));
2255 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2256 int key_idx, int defkey,
2257 const u8 *seq, size_t seq_len,
2258 const u8 *key, size_t key_len)
2260 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2264 if (defkey && alg == WPA_ALG_IGTK)
2265 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2267 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2269 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2274 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2275 WLAN_CIPHER_SUITE_WEP40);
2277 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2278 WLAN_CIPHER_SUITE_WEP104);
2281 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2284 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2287 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2288 WLAN_CIPHER_SUITE_AES_CMAC);
2291 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2292 "algorithm %d", __func__, alg);
2297 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2299 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2301 nla_nest_end(msg, key_attr);
2309 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2313 struct nlattr *nl_keys, *nl_key;
2315 for (i = 0; i < 4; i++) {
2316 if (!params->wep_key[i])
2324 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2326 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2328 goto nla_put_failure;
2330 for (i = 0; i < 4; i++) {
2331 if (!params->wep_key[i])
2334 nl_key = nla_nest_start(msg, i);
2336 goto nla_put_failure;
2338 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2339 params->wep_key[i]);
2340 if (params->wep_key_len[i] == 5)
2341 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2342 WLAN_CIPHER_SUITE_WEP40);
2344 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2345 WLAN_CIPHER_SUITE_WEP104);
2347 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2349 if (i == params->wep_tx_keyidx)
2350 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2352 nla_nest_end(msg, nl_key);
2354 nla_nest_end(msg, nl_keys);
2363 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2364 const u8 *addr, int cmd, u16 reason_code,
2365 int local_state_change)
2370 msg = nlmsg_alloc();
2374 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2376 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2377 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2378 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2379 if (local_state_change)
2380 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2382 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2385 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2386 "(%s)", ret, strerror(-ret));
2387 goto nla_put_failure;
2397 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2398 const u8 *addr, int reason_code)
2400 wpa_printf(MSG_DEBUG, "%s", __func__);
2401 drv->associated = 0;
2402 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2407 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2410 struct i802_bss *bss = priv;
2411 struct wpa_driver_nl80211_data *drv = bss->drv;
2412 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2413 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2414 wpa_printf(MSG_DEBUG, "%s", __func__);
2415 drv->associated = 0;
2416 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2421 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2424 struct i802_bss *bss = priv;
2425 struct wpa_driver_nl80211_data *drv = bss->drv;
2426 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2427 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2428 wpa_printf(MSG_DEBUG, "%s", __func__);
2429 drv->associated = 0;
2430 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2435 static int wpa_driver_nl80211_authenticate(
2436 void *priv, struct wpa_driver_auth_params *params)
2438 struct i802_bss *bss = priv;
2439 struct wpa_driver_nl80211_data *drv = bss->drv;
2442 enum nl80211_auth_type type;
2445 drv->associated = 0;
2446 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2447 /* FIX: IBSS mode */
2448 if (drv->nlmode != NL80211_IFTYPE_STATION)
2449 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2451 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2455 msg = nlmsg_alloc();
2459 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2462 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2463 NL80211_CMD_AUTHENTICATE, 0);
2465 for (i = 0; i < 4; i++) {
2466 if (!params->wep_key[i])
2468 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2470 i == params->wep_tx_keyidx, NULL, 0,
2472 params->wep_key_len[i]);
2473 if (params->wep_tx_keyidx != i)
2475 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2476 params->wep_key[i], params->wep_key_len[i])) {
2482 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2483 if (params->bssid) {
2484 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2485 MAC2STR(params->bssid));
2486 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2489 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2490 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2493 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2494 params->ssid, params->ssid_len);
2495 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2498 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2500 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2502 * TODO: if multiple auth_alg options enabled, try them one by one if
2503 * the AP rejects authentication due to unknown auth alg
2505 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2506 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2507 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2508 type = NL80211_AUTHTYPE_SHARED_KEY;
2509 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2510 type = NL80211_AUTHTYPE_NETWORK_EAP;
2511 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2512 type = NL80211_AUTHTYPE_FT;
2514 goto nla_put_failure;
2515 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2516 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2517 if (params->local_state_change) {
2518 wpa_printf(MSG_DEBUG, " * Local state change only");
2519 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2522 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2525 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2526 "(%s)", ret, strerror(-ret));
2528 if (ret == -EALREADY && count == 1 && params->bssid &&
2529 !params->local_state_change) {
2531 * mac80211 does not currently accept new
2532 * authentication if we are already authenticated. As a
2533 * workaround, force deauthentication and try again.
2535 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2536 "after forced deauthentication");
2537 wpa_driver_nl80211_deauthenticate(
2539 WLAN_REASON_PREV_AUTH_NOT_VALID);
2543 goto nla_put_failure;
2546 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2555 struct phy_info_arg {
2557 struct hostapd_hw_modes *modes;
2560 static int phy_info_handler(struct nl_msg *msg, void *arg)
2562 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2563 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2564 struct phy_info_arg *phy_info = arg;
2566 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2568 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2569 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2570 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2571 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2572 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2573 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2574 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2575 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2578 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2579 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2580 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2581 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2584 struct nlattr *nl_band;
2585 struct nlattr *nl_freq;
2586 struct nlattr *nl_rate;
2587 int rem_band, rem_freq, rem_rate;
2588 struct hostapd_hw_modes *mode;
2589 int idx, mode_is_set;
2591 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2592 genlmsg_attrlen(gnlh, 0), NULL);
2594 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2597 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2598 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2601 phy_info->modes = mode;
2605 mode = &phy_info->modes[*(phy_info->num_modes)];
2606 memset(mode, 0, sizeof(*mode));
2607 *(phy_info->num_modes) += 1;
2609 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2610 nla_len(nl_band), NULL);
2612 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2613 mode->ht_capab = nla_get_u16(
2614 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2617 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2618 mode->a_mpdu_params |= nla_get_u8(
2619 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2623 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2624 mode->a_mpdu_params |= nla_get_u8(
2625 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2629 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2630 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2632 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2633 os_memcpy(mode->mcs_set, mcs, 16);
2636 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2637 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2638 nla_len(nl_freq), freq_policy);
2639 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2641 mode->num_channels++;
2644 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2645 if (!mode->channels)
2650 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2651 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2652 nla_len(nl_freq), freq_policy);
2653 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2656 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2657 mode->channels[idx].flag = 0;
2660 /* crude heuristic */
2661 if (mode->channels[idx].freq < 4000)
2662 mode->mode = HOSTAPD_MODE_IEEE80211B;
2664 mode->mode = HOSTAPD_MODE_IEEE80211A;
2668 /* crude heuristic */
2669 if (mode->channels[idx].freq < 4000)
2670 if (mode->channels[idx].freq == 2484)
2671 mode->channels[idx].chan = 14;
2673 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2675 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2677 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2678 mode->channels[idx].flag |=
2679 HOSTAPD_CHAN_DISABLED;
2680 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2681 mode->channels[idx].flag |=
2682 HOSTAPD_CHAN_PASSIVE_SCAN;
2683 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2684 mode->channels[idx].flag |=
2685 HOSTAPD_CHAN_NO_IBSS;
2686 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2687 mode->channels[idx].flag |=
2690 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2691 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2692 mode->channels[idx].max_tx_power =
2693 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2698 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2699 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2700 nla_len(nl_rate), rate_policy);
2701 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2706 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2712 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2713 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2714 nla_len(nl_rate), rate_policy);
2715 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2717 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2719 /* crude heuristic */
2720 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2721 mode->rates[idx] > 200)
2722 mode->mode = HOSTAPD_MODE_IEEE80211G;
2731 static struct hostapd_hw_modes *
2732 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2735 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2736 int i, mode11g_idx = -1;
2738 /* If only 802.11g mode is included, use it to construct matching
2739 * 802.11b mode data. */
2741 for (m = 0; m < *num_modes; m++) {
2742 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2743 return modes; /* 802.11b already included */
2744 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2748 if (mode11g_idx < 0)
2749 return modes; /* 2.4 GHz band not supported at all */
2751 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2753 return modes; /* Could not add 802.11b mode */
2755 mode = &nmodes[*num_modes];
2756 os_memset(mode, 0, sizeof(*mode));
2760 mode->mode = HOSTAPD_MODE_IEEE80211B;
2762 mode11g = &modes[mode11g_idx];
2763 mode->num_channels = mode11g->num_channels;
2764 mode->channels = os_malloc(mode11g->num_channels *
2765 sizeof(struct hostapd_channel_data));
2766 if (mode->channels == NULL) {
2768 return modes; /* Could not add 802.11b mode */
2770 os_memcpy(mode->channels, mode11g->channels,
2771 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2773 mode->num_rates = 0;
2774 mode->rates = os_malloc(4 * sizeof(int));
2775 if (mode->rates == NULL) {
2776 os_free(mode->channels);
2778 return modes; /* Could not add 802.11b mode */
2781 for (i = 0; i < mode11g->num_rates; i++) {
2782 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2783 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2785 mode->rates[mode->num_rates] = mode11g->rates[i];
2787 if (mode->num_rates == 4)
2791 if (mode->num_rates == 0) {
2792 os_free(mode->channels);
2793 os_free(mode->rates);
2795 return modes; /* No 802.11b rates */
2798 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2805 static struct hostapd_hw_modes *
2806 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2808 struct i802_bss *bss = priv;
2809 struct wpa_driver_nl80211_data *drv = bss->drv;
2811 struct phy_info_arg result = {
2812 .num_modes = num_modes,
2819 msg = nlmsg_alloc();
2823 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2824 0, NL80211_CMD_GET_WIPHY, 0);
2826 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2828 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2829 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2835 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2836 const void *data, size_t len,
2840 0x00, 0x00, /* radiotap version */
2841 0x0e, 0x00, /* radiotap length */
2842 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2843 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2845 0x00, 0x00, /* RX and TX flags to indicate that */
2846 0x00, 0x00, /* this is the injected frame directly */
2848 struct iovec iov[2] = {
2850 .iov_base = &rtap_hdr,
2851 .iov_len = sizeof(rtap_hdr),
2854 .iov_base = (void *) data,
2858 struct msghdr msg = {
2863 .msg_control = NULL,
2864 .msg_controllen = 0,
2869 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2871 return sendmsg(drv->monitor_sock, &msg, 0);
2875 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2878 struct i802_bss *bss = priv;
2879 struct wpa_driver_nl80211_data *drv = bss->drv;
2880 struct ieee80211_mgmt *mgmt;
2884 mgmt = (struct ieee80211_mgmt *) data;
2885 fc = le_to_host16(mgmt->frame_control);
2887 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2888 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2890 * Only one of the authentication frame types is encrypted.
2891 * In order for static WEP encryption to work properly (i.e.,
2892 * to not encrypt the frame), we need to tell mac80211 about
2893 * the frames that must not be encrypted.
2895 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2896 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2897 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2901 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2905 static int wpa_driver_nl80211_set_beacon(void *priv,
2906 const u8 *head, size_t head_len,
2907 const u8 *tail, size_t tail_len,
2908 int dtim_period, int beacon_int)
2910 struct i802_bss *bss = priv;
2911 struct wpa_driver_nl80211_data *drv = bss->drv;
2913 u8 cmd = NL80211_CMD_NEW_BEACON;
2916 int ifindex = if_nametoindex(bss->ifname);
2918 beacon_set = bss->beacon_set;
2920 msg = nlmsg_alloc();
2924 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2927 cmd = NL80211_CMD_SET_BEACON;
2929 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2931 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2932 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2933 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2934 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2935 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2937 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2939 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2940 ret, strerror(-ret));
2942 bss->beacon_set = 1;
2950 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2951 int freq, int ht_enabled,
2952 int sec_channel_offset)
2957 msg = nlmsg_alloc();
2961 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2962 NL80211_CMD_SET_WIPHY, 0);
2964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2965 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2967 switch (sec_channel_offset) {
2969 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2970 NL80211_CHAN_HT40MINUS);
2973 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2974 NL80211_CHAN_HT40PLUS);
2977 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2983 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2986 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2987 "%d (%s)", freq, ret, strerror(-ret));
2993 static int wpa_driver_nl80211_sta_add(void *priv,
2994 struct hostapd_sta_add_params *params)
2996 struct i802_bss *bss = priv;
2997 struct wpa_driver_nl80211_data *drv = bss->drv;
3001 msg = nlmsg_alloc();
3005 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3006 0, NL80211_CMD_NEW_STATION, 0);
3008 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3009 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3010 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3011 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3012 params->supp_rates);
3013 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3014 params->listen_interval);
3015 if (params->ht_capabilities) {
3016 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3017 sizeof(*params->ht_capabilities),
3018 params->ht_capabilities);
3021 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3023 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3024 "result: %d (%s)", ret, strerror(-ret));
3032 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3034 struct i802_bss *bss = priv;
3035 struct wpa_driver_nl80211_data *drv = bss->drv;
3039 msg = nlmsg_alloc();
3043 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3044 0, NL80211_CMD_DEL_STATION, 0);
3046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3047 if_nametoindex(bss->ifname));
3048 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3050 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3059 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3064 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3067 /* stop listening for EAPOL on this interface */
3068 del_ifidx(drv, ifidx);
3069 #endif /* HOSTAPD */
3071 msg = nlmsg_alloc();
3073 goto nla_put_failure;
3075 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3076 0, NL80211_CMD_DEL_INTERFACE, 0);
3077 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3079 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3082 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3086 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3088 enum nl80211_iftype iftype,
3089 const u8 *addr, int wds)
3091 struct nl_msg *msg, *flags = NULL;
3095 msg = nlmsg_alloc();
3099 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3100 0, NL80211_CMD_NEW_INTERFACE, 0);
3101 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3102 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3103 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3105 if (iftype == NL80211_IFTYPE_MONITOR) {
3108 flags = nlmsg_alloc();
3110 goto nla_put_failure;
3112 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3114 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3119 goto nla_put_failure;
3121 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3124 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3127 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3128 ifname, ret, strerror(-ret));
3132 ifidx = if_nametoindex(ifname);
3133 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3140 /* start listening for EAPOL on this interface */
3141 add_ifidx(drv, ifidx);
3142 #endif /* HOSTAPD */
3144 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3145 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3146 nl80211_remove_iface(drv, ifidx);
3154 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3155 const char *ifname, enum nl80211_iftype iftype,
3156 const u8 *addr, int wds)
3160 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3162 /* if error occured and interface exists already */
3163 if (ret == -ENFILE && if_nametoindex(ifname)) {
3164 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3166 /* Try to remove the interface that was already there. */
3167 nl80211_remove_iface(drv, if_nametoindex(ifname));
3169 /* Try to create the interface again */
3170 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3174 if (ret >= 0 && drv->disable_11b_rates)
3175 nl80211_disable_11b_rates(drv, ret, 1);
3181 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3183 struct ieee80211_hdr *hdr;
3185 union wpa_event_data event;
3187 hdr = (struct ieee80211_hdr *) buf;
3188 fc = le_to_host16(hdr->frame_control);
3190 os_memset(&event, 0, sizeof(event));
3191 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3192 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3193 event.tx_status.dst = hdr->addr1;
3194 event.tx_status.data = buf;
3195 event.tx_status.data_len = len;
3196 event.tx_status.ack = ok;
3197 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3201 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3202 u8 *buf, size_t len)
3204 union wpa_event_data event;
3205 os_memset(&event, 0, sizeof(event));
3206 event.rx_from_unknown.frame = buf;
3207 event.rx_from_unknown.len = len;
3208 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3212 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3213 u8 *buf, size_t len, int datarate, int ssi_signal)
3215 struct ieee80211_hdr *hdr;
3217 union wpa_event_data event;
3219 hdr = (struct ieee80211_hdr *) buf;
3220 fc = le_to_host16(hdr->frame_control);
3222 switch (WLAN_FC_GET_TYPE(fc)) {
3223 case WLAN_FC_TYPE_MGMT:
3224 os_memset(&event, 0, sizeof(event));
3225 event.rx_mgmt.frame = buf;
3226 event.rx_mgmt.frame_len = len;
3227 event.rx_mgmt.datarate = datarate;
3228 event.rx_mgmt.ssi_signal = ssi_signal;
3229 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3231 case WLAN_FC_TYPE_CTRL:
3232 /* can only get here with PS-Poll frames */
3233 wpa_printf(MSG_DEBUG, "CTRL");
3234 from_unknown_sta(drv, buf, len);
3236 case WLAN_FC_TYPE_DATA:
3237 from_unknown_sta(drv, buf, len);
3243 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3245 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3247 unsigned char buf[3000];
3248 struct ieee80211_radiotap_iterator iter;
3250 int datarate = 0, ssi_signal = 0;
3251 int injected = 0, failed = 0, rxflags = 0;
3253 len = recv(sock, buf, sizeof(buf), 0);
3259 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3260 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3261 "frame since Probe Request reporting is disabled");
3265 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3266 printf("received invalid radiotap frame\n");
3271 ret = ieee80211_radiotap_iterator_next(&iter);
3275 printf("received invalid radiotap frame (%d)\n", ret);
3278 switch (iter.this_arg_index) {
3279 case IEEE80211_RADIOTAP_FLAGS:
3280 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3283 case IEEE80211_RADIOTAP_RX_FLAGS:
3286 case IEEE80211_RADIOTAP_TX_FLAGS:
3288 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3289 IEEE80211_RADIOTAP_F_TX_FAIL;
3291 case IEEE80211_RADIOTAP_DATA_RETRIES:
3293 case IEEE80211_RADIOTAP_CHANNEL:
3294 /* TODO: convert from freq/flags to channel number */
3296 case IEEE80211_RADIOTAP_RATE:
3297 datarate = *iter.this_arg * 5;
3299 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3300 ssi_signal = *iter.this_arg;
3305 if (rxflags && injected)
3309 handle_frame(drv, buf + iter.max_length,
3310 len - iter.max_length, datarate, ssi_signal);
3312 handle_tx_callback(drv->ctx, buf + iter.max_length,
3313 len - iter.max_length, !failed);
3318 * we post-process the filter code later and rewrite
3319 * this to the offset to the last instruction
3324 static struct sock_filter msock_filter_insns[] = {
3326 * do a little-endian load of the radiotap length field
3328 /* load lower byte into A */
3329 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3330 /* put it into X (== index register) */
3331 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3332 /* load upper byte into A */
3333 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3334 /* left-shift it by 8 */
3335 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3337 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3338 /* put result into X */
3339 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3342 * Allow management frames through, this also gives us those
3343 * management frames that we sent ourselves with status
3345 /* load the lower byte of the IEEE 802.11 frame control field */
3346 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3347 /* mask off frame type and version */
3348 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3349 /* accept frame if it's both 0, fall through otherwise */
3350 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3353 * TODO: add a bit to radiotap RX flags that indicates
3354 * that the sending station is not associated, then
3355 * add a filter here that filters on our DA and that flag
3356 * to allow us to deauth frames to that bad station.
3358 * Not a regression -- we didn't do it before either.
3363 * drop non-data frames
3365 /* load the lower byte of the frame control field */
3366 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3367 /* mask off QoS bit */
3368 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3369 /* drop non-data frames */
3370 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3372 /* load the upper byte of the frame control field */
3373 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3374 /* mask off toDS/fromDS */
3375 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3376 /* accept WDS frames */
3377 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3380 * add header length to index
3382 /* load the lower byte of the frame control field */
3383 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3384 /* mask off QoS bit */
3385 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3386 /* right shift it by 6 to give 0 or 2 */
3387 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3388 /* add data frame header length */
3389 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3390 /* add index, was start of 802.11 header */
3391 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3392 /* move to index, now start of LL header */
3393 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3396 * Accept empty data frames, we use those for
3399 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3400 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3403 * Accept EAPOL frames
3405 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3406 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3407 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3408 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3410 /* keep these last two statements or change the code below */
3411 /* return 0 == "DROP" */
3412 BPF_STMT(BPF_RET | BPF_K, 0),
3413 /* return ~0 == "keep all" */
3414 BPF_STMT(BPF_RET | BPF_K, ~0),
3417 static struct sock_fprog msock_filter = {
3418 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3419 .filter = msock_filter_insns,
3423 static int add_monitor_filter(int s)
3427 /* rewrite all PASS/FAIL jump offsets */
3428 for (idx = 0; idx < msock_filter.len; idx++) {
3429 struct sock_filter *insn = &msock_filter_insns[idx];
3431 if (BPF_CLASS(insn->code) == BPF_JMP) {
3432 if (insn->code == (BPF_JMP|BPF_JA)) {
3433 if (insn->k == PASS)
3434 insn->k = msock_filter.len - idx - 2;
3435 else if (insn->k == FAIL)
3436 insn->k = msock_filter.len - idx - 3;
3439 if (insn->jt == PASS)
3440 insn->jt = msock_filter.len - idx - 2;
3441 else if (insn->jt == FAIL)
3442 insn->jt = msock_filter.len - idx - 3;
3444 if (insn->jf == PASS)
3445 insn->jf = msock_filter.len - idx - 2;
3446 else if (insn->jf == FAIL)
3447 insn->jf = msock_filter.len - idx - 3;
3451 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3452 &msock_filter, sizeof(msock_filter))) {
3453 perror("SO_ATTACH_FILTER");
3461 static void nl80211_remove_monitor_interface(
3462 struct wpa_driver_nl80211_data *drv)
3464 if (drv->monitor_ifidx >= 0) {
3465 nl80211_remove_iface(drv, drv->monitor_ifidx);
3466 drv->monitor_ifidx = -1;
3468 if (drv->monitor_sock >= 0) {
3469 eloop_unregister_read_sock(drv->monitor_sock);
3470 close(drv->monitor_sock);
3471 drv->monitor_sock = -1;
3477 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3480 struct sockaddr_ll ll;
3484 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3485 buf[IFNAMSIZ - 1] = '\0';
3487 drv->monitor_ifidx =
3488 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3491 if (drv->monitor_ifidx < 0)
3494 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3497 memset(&ll, 0, sizeof(ll));
3498 ll.sll_family = AF_PACKET;
3499 ll.sll_ifindex = drv->monitor_ifidx;
3500 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3501 if (drv->monitor_sock < 0) {
3502 perror("socket[PF_PACKET,SOCK_RAW]");
3506 if (add_monitor_filter(drv->monitor_sock)) {
3507 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3508 "interface; do filtering in user space");
3509 /* This works, but will cost in performance. */
3512 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3513 perror("monitor socket bind");
3517 optlen = sizeof(optval);
3520 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3521 perror("Failed to set socket priority");
3525 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3527 printf("Could not register monitor read socket\n");
3533 nl80211_remove_monitor_interface(drv);
3538 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3540 static int wpa_driver_nl80211_hapd_send_eapol(
3541 void *priv, const u8 *addr, const u8 *data,
3542 size_t data_len, int encrypt, const u8 *own_addr)
3544 struct i802_bss *bss = priv;
3545 struct wpa_driver_nl80211_data *drv = bss->drv;
3546 struct ieee80211_hdr *hdr;
3551 int qos = sta->flags & WPA_STA_WMM;
3556 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3558 hdr = os_zalloc(len);
3560 printf("malloc() failed for i802_send_data(len=%lu)\n",
3561 (unsigned long) len);
3565 hdr->frame_control =
3566 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3567 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3569 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3570 #if 0 /* To be enabled if qos determination is added above */
3572 hdr->frame_control |=
3573 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3577 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3578 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3579 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3580 pos = (u8 *) (hdr + 1);
3582 #if 0 /* To be enabled if qos determination is added above */
3584 /* add an empty QoS header if needed */
3591 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3592 pos += sizeof(rfc1042_header);
3593 WPA_PUT_BE16(pos, ETH_P_PAE);
3595 memcpy(pos, data, data_len);
3597 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3599 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3601 (unsigned long) len, errno, strerror(errno));
3609 static u32 sta_flags_nl80211(int flags)
3613 if (flags & WPA_STA_AUTHORIZED)
3614 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3615 if (flags & WPA_STA_WMM)
3616 f |= BIT(NL80211_STA_FLAG_WME);
3617 if (flags & WPA_STA_SHORT_PREAMBLE)
3618 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3619 if (flags & WPA_STA_MFP)
3620 f |= BIT(NL80211_STA_FLAG_MFP);
3626 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3628 int flags_or, int flags_and)
3630 struct i802_bss *bss = priv;
3631 struct wpa_driver_nl80211_data *drv = bss->drv;
3632 struct nl_msg *msg, *flags = NULL;
3633 struct nl80211_sta_flag_update upd;
3635 msg = nlmsg_alloc();
3639 flags = nlmsg_alloc();
3645 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3646 0, NL80211_CMD_SET_STATION, 0);
3648 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3649 if_nametoindex(bss->ifname));
3650 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3653 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3654 * can be removed eventually.
3656 if (total_flags & WPA_STA_AUTHORIZED)
3657 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3659 if (total_flags & WPA_STA_WMM)
3660 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3662 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3663 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3665 if (total_flags & WPA_STA_MFP)
3666 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3668 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3669 goto nla_put_failure;
3671 os_memset(&upd, 0, sizeof(upd));
3672 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3673 upd.set = sta_flags_nl80211(flags_or);
3674 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3678 return send_and_recv_msgs(drv, msg, NULL, NULL);
3685 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3686 struct wpa_driver_associate_params *params)
3688 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3689 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3690 nl80211_remove_monitor_interface(drv);
3694 /* TODO: setup monitor interface (and add code somewhere to remove this
3695 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3701 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3706 msg = nlmsg_alloc();
3710 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3711 NL80211_CMD_LEAVE_IBSS, 0);
3712 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3713 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3716 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3717 "(%s)", ret, strerror(-ret));
3718 goto nla_put_failure;
3722 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3730 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3731 struct wpa_driver_associate_params *params)
3737 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3739 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3740 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3746 msg = nlmsg_alloc();
3750 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3751 NL80211_CMD_JOIN_IBSS, 0);
3752 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3754 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3755 goto nla_put_failure;
3757 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3758 params->ssid, params->ssid_len);
3759 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3761 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3762 drv->ssid_len = params->ssid_len;
3764 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3765 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3767 ret = nl80211_set_conn_keys(params, msg);
3769 goto nla_put_failure;
3771 if (params->wpa_ie) {
3772 wpa_hexdump(MSG_DEBUG,
3773 " * Extra IEs for Beacon/Probe Response frames",
3774 params->wpa_ie, params->wpa_ie_len);
3775 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3779 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3782 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3783 ret, strerror(-ret));
3785 if (ret == -EALREADY && count == 1) {
3786 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3788 nl80211_leave_ibss(drv);
3793 goto nla_put_failure;
3796 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3804 static int wpa_driver_nl80211_connect(
3805 struct wpa_driver_nl80211_data *drv,
3806 struct wpa_driver_associate_params *params)
3809 enum nl80211_auth_type type;
3812 msg = nlmsg_alloc();
3816 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3817 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3818 NL80211_CMD_CONNECT, 0);
3820 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3821 if (params->bssid) {
3822 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3823 MAC2STR(params->bssid));
3824 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3827 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3828 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3831 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3832 params->ssid, params->ssid_len);
3833 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3835 if (params->ssid_len > sizeof(drv->ssid))
3836 goto nla_put_failure;
3837 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3838 drv->ssid_len = params->ssid_len;
3840 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3842 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3845 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3846 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3847 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3848 type = NL80211_AUTHTYPE_SHARED_KEY;
3849 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3850 type = NL80211_AUTHTYPE_NETWORK_EAP;
3851 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3852 type = NL80211_AUTHTYPE_FT;
3854 goto nla_put_failure;
3856 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3857 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3859 if (params->wpa_ie && params->wpa_ie_len) {
3860 enum nl80211_wpa_versions ver;
3862 if (params->wpa_ie[0] == WLAN_EID_RSN)
3863 ver = NL80211_WPA_VERSION_2;
3865 ver = NL80211_WPA_VERSION_1;
3867 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3868 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3871 if (params->pairwise_suite != CIPHER_NONE) {
3874 switch (params->pairwise_suite) {
3876 cipher = WLAN_CIPHER_SUITE_WEP40;
3879 cipher = WLAN_CIPHER_SUITE_WEP104;
3882 cipher = WLAN_CIPHER_SUITE_CCMP;
3886 cipher = WLAN_CIPHER_SUITE_TKIP;
3889 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3892 if (params->group_suite != CIPHER_NONE) {
3895 switch (params->group_suite) {
3897 cipher = WLAN_CIPHER_SUITE_WEP40;
3900 cipher = WLAN_CIPHER_SUITE_WEP104;
3903 cipher = WLAN_CIPHER_SUITE_CCMP;
3907 cipher = WLAN_CIPHER_SUITE_TKIP;
3910 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3913 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3914 params->key_mgmt_suite == KEY_MGMT_PSK) {
3915 int mgmt = WLAN_AKM_SUITE_PSK;
3917 switch (params->key_mgmt_suite) {
3918 case KEY_MGMT_802_1X:
3919 mgmt = WLAN_AKM_SUITE_8021X;
3923 mgmt = WLAN_AKM_SUITE_PSK;
3926 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3929 ret = nl80211_set_conn_keys(params, msg);
3931 goto nla_put_failure;
3933 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3936 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3937 "(%s)", ret, strerror(-ret));
3938 goto nla_put_failure;
3941 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3950 static int wpa_driver_nl80211_associate(
3951 void *priv, struct wpa_driver_associate_params *params)
3953 struct i802_bss *bss = priv;
3954 struct wpa_driver_nl80211_data *drv = bss->drv;
3958 if (params->mode == IEEE80211_MODE_AP)
3959 return wpa_driver_nl80211_ap(drv, params);
3961 if (params->mode == IEEE80211_MODE_IBSS)
3962 return wpa_driver_nl80211_ibss(drv, params);
3964 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3965 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3967 return wpa_driver_nl80211_connect(drv, params);
3970 drv->associated = 0;
3972 msg = nlmsg_alloc();
3976 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3978 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3979 NL80211_CMD_ASSOCIATE, 0);
3981 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3982 if (params->bssid) {
3983 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3984 MAC2STR(params->bssid));
3985 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3988 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3989 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3990 drv->assoc_freq = params->freq;
3992 drv->assoc_freq = 0;
3994 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3995 params->ssid, params->ssid_len);
3996 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3998 if (params->ssid_len > sizeof(drv->ssid))
3999 goto nla_put_failure;
4000 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4001 drv->ssid_len = params->ssid_len;
4003 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4005 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4008 #ifdef CONFIG_IEEE80211W
4009 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4010 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4011 #endif /* CONFIG_IEEE80211W */
4013 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4015 if (params->prev_bssid) {
4016 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4017 MAC2STR(params->prev_bssid));
4018 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4019 params->prev_bssid);
4022 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4025 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4026 "(%s)", ret, strerror(-ret));
4027 nl80211_dump_scan(drv);
4028 goto nla_put_failure;
4031 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4040 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4041 int ifindex, int mode)
4046 msg = nlmsg_alloc();
4050 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4051 0, NL80211_CMD_SET_INTERFACE, 0);
4052 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4053 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4055 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4059 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4060 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4065 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4067 struct i802_bss *bss = priv;
4068 struct wpa_driver_nl80211_data *drv = bss->drv;
4074 nlmode = NL80211_IFTYPE_STATION;
4077 nlmode = NL80211_IFTYPE_ADHOC;
4080 nlmode = NL80211_IFTYPE_AP;
4086 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4087 drv->nlmode = nlmode;
4092 if (nlmode == drv->nlmode) {
4093 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4094 "requested mode - ignore error");
4096 goto done; /* Already in the requested mode */
4099 /* mac80211 doesn't allow mode changes while the device is up, so
4100 * take the device down, try to set the mode again, and bring the
4103 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
4104 /* Try to set the mode again while the interface is down */
4105 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4106 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4111 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4112 "interface is down");
4113 drv->nlmode = nlmode;
4117 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4118 /* Setup additional AP mode functionality if needed */
4119 if (drv->monitor_ifidx < 0 &&
4120 nl80211_create_monitor_interface(drv))
4122 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4123 /* Remove additional AP mode functionality */
4124 nl80211_remove_monitor_interface(drv);
4125 bss->beacon_set = 0;
4129 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4130 "from %d failed", nlmode, drv->nlmode);
4136 static int wpa_driver_nl80211_get_capa(void *priv,
4137 struct wpa_driver_capa *capa)
4139 struct i802_bss *bss = priv;
4140 struct wpa_driver_nl80211_data *drv = bss->drv;
4141 if (!drv->has_capability)
4143 os_memcpy(capa, &drv->capa, sizeof(*capa));
4148 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4150 struct i802_bss *bss = priv;
4151 struct wpa_driver_nl80211_data *drv = bss->drv;
4153 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4154 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4155 drv->operstate = state;
4156 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4157 state ? IF_OPER_UP : IF_OPER_DORMANT);
4161 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4163 struct i802_bss *bss = priv;
4164 struct wpa_driver_nl80211_data *drv = bss->drv;
4166 struct nl80211_sta_flag_update upd;
4168 msg = nlmsg_alloc();
4172 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4173 0, NL80211_CMD_SET_STATION, 0);
4175 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4176 if_nametoindex(bss->ifname));
4177 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4179 os_memset(&upd, 0, sizeof(upd));
4180 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4182 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4183 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4185 return send_and_recv_msgs(drv, msg, NULL, NULL);
4193 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4198 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4200 for (i = 0; i < drv->num_if_indices; i++) {
4201 if (drv->if_indices[i] == 0) {
4202 drv->if_indices[i] = ifidx;
4207 if (drv->if_indices != drv->default_if_indices)
4208 old = drv->if_indices;
4212 drv->if_indices = os_realloc(old,
4213 sizeof(int) * (drv->num_if_indices + 1));
4214 if (!drv->if_indices) {
4216 drv->if_indices = drv->default_if_indices;
4218 drv->if_indices = old;
4219 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4221 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4224 os_memcpy(drv->if_indices, drv->default_if_indices,
4225 sizeof(drv->default_if_indices));
4226 drv->if_indices[drv->num_if_indices] = ifidx;
4227 drv->num_if_indices++;
4231 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4235 for (i = 0; i < drv->num_if_indices; i++) {
4236 if (drv->if_indices[i] == ifidx) {
4237 drv->if_indices[i] = 0;
4244 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4248 for (i = 0; i < drv->num_if_indices; i++)
4249 if (drv->if_indices[i] == ifidx)
4256 static inline int min_int(int a, int b)
4264 static int get_key_handler(struct nl_msg *msg, void *arg)
4266 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4267 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4269 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4270 genlmsg_attrlen(gnlh, 0), NULL);
4273 * TODO: validate the key index and mac address!
4274 * Otherwise, there's a race condition as soon as
4275 * the kernel starts sending key notifications.
4278 if (tb[NL80211_ATTR_KEY_SEQ])
4279 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4280 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4285 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4288 struct i802_bss *bss = priv;
4289 struct wpa_driver_nl80211_data *drv = bss->drv;
4292 msg = nlmsg_alloc();
4296 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4297 0, NL80211_CMD_GET_KEY, 0);
4300 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4301 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4302 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4306 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4312 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4315 struct i802_bss *bss = priv;
4316 struct wpa_driver_nl80211_data *drv = bss->drv;
4318 u8 rates[NL80211_MAX_SUPP_RATES];
4322 msg = nlmsg_alloc();
4326 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4327 NL80211_CMD_SET_BSS, 0);
4329 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4330 rates[rates_len++] = basic_rates[i] / 5;
4332 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4334 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4336 return send_and_recv_msgs(drv, msg, NULL, NULL);
4341 #endif /* HOSTAPD */
4344 /* Set kernel driver on given frequency (MHz) */
4345 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4347 struct i802_bss *bss = priv;
4348 struct wpa_driver_nl80211_data *drv = bss->drv;
4349 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4350 freq->sec_channel_offset);
4356 static int i802_set_rts(void *priv, int rts)
4358 struct i802_bss *bss = priv;
4359 struct wpa_driver_nl80211_data *drv = bss->drv;
4364 msg = nlmsg_alloc();
4373 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4374 0, NL80211_CMD_SET_WIPHY, 0);
4375 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4376 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4378 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4382 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4383 "%d (%s)", rts, ret, strerror(-ret));
4388 static int i802_set_frag(void *priv, int frag)
4390 struct i802_bss *bss = priv;
4391 struct wpa_driver_nl80211_data *drv = bss->drv;
4396 msg = nlmsg_alloc();
4405 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4406 0, NL80211_CMD_SET_WIPHY, 0);
4407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4408 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4410 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4414 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4415 "%d: %d (%s)", frag, ret, strerror(-ret));
4420 static int i802_flush(void *priv)
4422 struct i802_bss *bss = priv;
4423 struct wpa_driver_nl80211_data *drv = bss->drv;
4426 msg = nlmsg_alloc();
4430 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4431 0, NL80211_CMD_DEL_STATION, 0);
4434 * XXX: FIX! this needs to flush all VLANs too
4436 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4437 if_nametoindex(bss->ifname));
4439 return send_and_recv_msgs(drv, msg, NULL, NULL);
4445 static int get_sta_handler(struct nl_msg *msg, void *arg)
4447 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4448 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4449 struct hostap_sta_driver_data *data = arg;
4450 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4451 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4452 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4453 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4454 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4455 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4456 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4459 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4460 genlmsg_attrlen(gnlh, 0), NULL);
4463 * TODO: validate the interface and mac address!
4464 * Otherwise, there's a race condition as soon as
4465 * the kernel starts sending station notifications.
4468 if (!tb[NL80211_ATTR_STA_INFO]) {
4469 wpa_printf(MSG_DEBUG, "sta stats missing!");
4472 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4473 tb[NL80211_ATTR_STA_INFO],
4475 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4479 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4480 data->inactive_msec =
4481 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4482 if (stats[NL80211_STA_INFO_RX_BYTES])
4483 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4484 if (stats[NL80211_STA_INFO_TX_BYTES])
4485 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4486 if (stats[NL80211_STA_INFO_RX_PACKETS])
4488 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4489 if (stats[NL80211_STA_INFO_TX_PACKETS])
4491 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4496 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4499 struct i802_bss *bss = priv;
4500 struct wpa_driver_nl80211_data *drv = bss->drv;
4503 os_memset(data, 0, sizeof(*data));
4504 msg = nlmsg_alloc();
4508 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4509 0, NL80211_CMD_GET_STATION, 0);
4511 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4512 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4514 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4520 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4521 int cw_min, int cw_max, int burst_time)
4523 struct i802_bss *bss = priv;
4524 struct wpa_driver_nl80211_data *drv = bss->drv;
4526 struct nlattr *txq, *params;
4528 msg = nlmsg_alloc();
4532 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4533 0, NL80211_CMD_SET_WIPHY, 0);
4535 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4537 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4539 goto nla_put_failure;
4541 /* We are only sending parameters for a single TXQ at a time */
4542 params = nla_nest_start(msg, 1);
4544 goto nla_put_failure;
4546 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4547 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4548 * 32 usec, so need to convert the value here. */
4549 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4550 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4551 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4552 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4554 nla_nest_end(msg, params);
4556 nla_nest_end(msg, txq);
4558 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4565 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4567 struct i802_bss *bss = priv;
4568 struct wpa_driver_nl80211_data *drv = bss->drv;
4571 msg = nlmsg_alloc();
4575 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4576 NL80211_CMD_SET_BSS, 0);
4579 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4581 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4583 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4585 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4587 return send_and_recv_msgs(drv, msg, NULL, NULL);
4593 static int i802_set_cts_protect(void *priv, int value)
4595 return i802_set_bss(priv, value, -1, -1);
4599 static int i802_set_preamble(void *priv, int value)
4601 return i802_set_bss(priv, -1, value, -1);
4605 static int i802_set_short_slot_time(void *priv, int value)
4607 return i802_set_bss(priv, -1, -1, value);
4611 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4612 const char *ifname, int vlan_id)
4614 struct i802_bss *bss = priv;
4615 struct wpa_driver_nl80211_data *drv = bss->drv;
4619 msg = nlmsg_alloc();
4623 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4624 0, NL80211_CMD_SET_STATION, 0);
4626 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4627 if_nametoindex(bss->ifname));
4628 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4629 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4630 if_nametoindex(ifname));
4632 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4634 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4635 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4636 MAC2STR(addr), ifname, vlan_id, ret,
4644 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4646 struct i802_bss *bss = priv;
4647 struct wpa_driver_nl80211_data *drv = bss->drv;
4648 char name[IFNAMSIZ + 1];
4650 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4651 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4652 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4654 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4657 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4658 return i802_set_sta_vlan(priv, addr, name, 0);
4660 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4661 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4667 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4669 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4670 struct sockaddr_ll lladdr;
4671 unsigned char buf[3000];
4673 socklen_t fromlen = sizeof(lladdr);
4675 len = recvfrom(sock, buf, sizeof(buf), 0,
4676 (struct sockaddr *)&lladdr, &fromlen);
4682 if (have_ifidx(drv, lladdr.sll_ifindex))
4683 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4687 static int i802_get_inact_sec(void *priv, const u8 *addr)
4689 struct hostap_sta_driver_data data;
4692 data.inactive_msec = (unsigned long) -1;
4693 ret = i802_read_sta_data(priv, &data, addr);
4694 if (ret || data.inactive_msec == (unsigned long) -1)
4696 return data.inactive_msec / 1000;
4700 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4709 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4712 struct i802_bss *bss = priv;
4713 struct ieee80211_mgmt mgmt;
4715 memset(&mgmt, 0, sizeof(mgmt));
4716 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4717 WLAN_FC_STYPE_DEAUTH);
4718 memcpy(mgmt.da, addr, ETH_ALEN);
4719 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4720 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4721 mgmt.u.deauth.reason_code = host_to_le16(reason);
4722 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4724 sizeof(mgmt.u.deauth));
4728 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4731 struct i802_bss *bss = priv;
4732 struct ieee80211_mgmt mgmt;
4734 memset(&mgmt, 0, sizeof(mgmt));
4735 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4736 WLAN_FC_STYPE_DISASSOC);
4737 memcpy(mgmt.da, addr, ETH_ALEN);
4738 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4739 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4740 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4741 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4743 sizeof(mgmt.u.disassoc));
4747 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4748 const char *brname, const char *ifname)
4751 char in_br[IFNAMSIZ];
4753 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4754 ifindex = if_nametoindex(brname);
4757 * Bridge was configured, but the bridge device does
4758 * not exist. Try to add it now.
4760 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4761 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4762 "bridge interface %s: %s",
4763 brname, strerror(errno));
4766 drv->added_bridge = 1;
4767 add_ifidx(drv, if_nametoindex(brname));
4770 if (linux_br_get(in_br, ifname) == 0) {
4771 if (os_strcmp(in_br, brname) == 0)
4772 return 0; /* already in the bridge */
4774 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4775 "bridge %s", ifname, in_br);
4776 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4777 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4778 "remove interface %s from bridge "
4780 ifname, brname, strerror(errno));
4785 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4787 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4788 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4789 "into bridge %s: %s",
4790 ifname, brname, strerror(errno));
4793 drv->added_if_into_bridge = 1;
4799 static void *i802_init(struct hostapd_data *hapd,
4800 struct wpa_init_params *params)
4802 struct wpa_driver_nl80211_data *drv;
4803 struct i802_bss *bss;
4805 char brname[IFNAMSIZ];
4806 int ifindex, br_ifindex;
4809 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4814 if (linux_br_get(brname, params->ifname) == 0) {
4815 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4816 params->ifname, brname);
4817 br_ifindex = if_nametoindex(brname);
4823 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4824 drv->if_indices = drv->default_if_indices;
4825 for (i = 0; i < params->num_bridge; i++) {
4826 if (params->bridge[i]) {
4827 ifindex = if_nametoindex(params->bridge[i]);
4829 add_ifidx(drv, ifindex);
4830 if (ifindex == br_ifindex)
4834 if (!br_added && br_ifindex &&
4835 (params->num_bridge == 0 || !params->bridge[0]))
4836 add_ifidx(drv, br_ifindex);
4838 /* start listening for EAPOL on the default AP interface */
4839 add_ifidx(drv, drv->ifindex);
4841 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4844 if (params->bssid) {
4845 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4850 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4851 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4852 "into AP mode", bss->ifname);
4856 if (params->num_bridge && params->bridge[0] &&
4857 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4860 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4863 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4864 if (drv->eapol_sock < 0) {
4865 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4869 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4871 printf("Could not register read socket for eapol\n");
4875 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4881 nl80211_remove_monitor_interface(drv);
4882 if (drv->ioctl_sock >= 0)
4883 close(drv->ioctl_sock);
4885 genl_family_put(drv->nl80211);
4886 nl_cache_free(drv->nl_cache);
4887 nl_handle_destroy(drv->nl_handle);
4888 nl_cb_put(drv->nl_cb);
4895 static void i802_deinit(void *priv)
4897 wpa_driver_nl80211_deinit(priv);
4900 #endif /* HOSTAPD */
4903 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4904 enum wpa_driver_if_type type)
4907 case WPA_IF_STATION:
4908 return NL80211_IFTYPE_STATION;
4909 case WPA_IF_AP_VLAN:
4910 return NL80211_IFTYPE_AP_VLAN;
4912 return NL80211_IFTYPE_AP;
4918 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4919 const char *ifname, const u8 *addr,
4920 void *bss_ctx, void **drv_priv,
4921 char *force_ifname, u8 *if_addr)
4923 struct i802_bss *bss = priv;
4924 struct wpa_driver_nl80211_data *drv = bss->drv;
4927 struct i802_bss *new_bss = NULL;
4929 if (type == WPA_IF_AP_BSS) {
4930 new_bss = os_zalloc(sizeof(*new_bss));
4931 if (new_bss == NULL)
4934 #endif /* HOSTAPD */
4937 os_memcpy(if_addr, addr, ETH_ALEN);
4938 ifidx = nl80211_create_iface(drv, ifname,
4939 wpa_driver_nl80211_if_type(type), addr,
4944 #endif /* HOSTAPD */
4949 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
4953 if (type == WPA_IF_AP_BSS) {
4954 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4955 nl80211_remove_iface(drv, ifidx);
4959 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4960 new_bss->ifindex = ifidx;
4962 new_bss->next = drv->first_bss.next;
4963 drv->first_bss.next = new_bss;
4965 *drv_priv = new_bss;
4967 #endif /* HOSTAPD */
4973 static int wpa_driver_nl80211_if_remove(void *priv,
4974 enum wpa_driver_if_type type,
4977 struct i802_bss *bss = priv;
4978 struct wpa_driver_nl80211_data *drv = bss->drv;
4979 int ifindex = if_nametoindex(ifname);
4981 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4982 __func__, type, ifname, ifindex);
4985 nl80211_remove_iface(drv, ifindex);
4988 if (type != WPA_IF_AP_BSS)
4991 if (bss != &drv->first_bss) {
4992 struct i802_bss *tbss = &drv->first_bss;
4995 if (tbss->next != bss)
4998 tbss->next = bss->next;
5003 #endif /* HOSTAPD */
5009 static int cookie_handler(struct nl_msg *msg, void *arg)
5011 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5012 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5014 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5015 genlmsg_attrlen(gnlh, 0), NULL);
5016 if (tb[NL80211_ATTR_COOKIE])
5017 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5022 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5023 const u8 *dst, const u8 *src,
5025 const u8 *data, size_t data_len)
5027 struct i802_bss *bss = priv;
5028 struct wpa_driver_nl80211_data *drv = bss->drv;
5032 struct ieee80211_hdr *hdr;
5035 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5038 buf = os_zalloc(24 + data_len);
5041 os_memcpy(buf + 24, data, data_len);
5042 hdr = (struct ieee80211_hdr *) buf;
5043 hdr->frame_control =
5044 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5045 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5046 os_memcpy(hdr->addr2, src, ETH_ALEN);
5047 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5049 if (drv->nlmode == NL80211_IFTYPE_AP) {
5050 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5055 msg = nlmsg_alloc();
5061 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5062 NL80211_CMD_ACTION, 0);
5064 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5065 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5066 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
5071 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5074 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
5075 "(%s)", ret, strerror(-ret));
5076 goto nla_put_failure;
5078 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
5079 "cookie 0x%llx", (long long unsigned int) cookie);
5080 drv->send_action_cookie = cookie;
5081 drv->pending_send_action = 1;
5091 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5092 unsigned int duration)
5094 struct i802_bss *bss = priv;
5095 struct wpa_driver_nl80211_data *drv = bss->drv;
5100 msg = nlmsg_alloc();
5104 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5105 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5107 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5108 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5109 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5112 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5114 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5115 "0x%llx for freq=%u MHz duration=%u",
5116 (long long unsigned int) cookie, freq, duration);
5117 drv->remain_on_chan_cookie = cookie;
5120 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5121 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
5127 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5129 struct i802_bss *bss = priv;
5130 struct wpa_driver_nl80211_data *drv = bss->drv;
5134 if (!drv->pending_remain_on_chan) {
5135 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5140 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5142 (long long unsigned int) drv->remain_on_chan_cookie);
5144 msg = nlmsg_alloc();
5148 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5149 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5151 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5152 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5154 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5157 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5158 "%d (%s)", ret, strerror(-ret));
5164 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5167 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5168 if (drv->monitor_ifidx < 0)
5169 return; /* monitor interface already removed */
5171 if (drv->nlmode != NL80211_IFTYPE_STATION)
5172 return; /* not in station mode anymore */
5174 if (drv->probe_req_report)
5175 return; /* reporting enabled */
5177 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5178 "Probe Request reporting needed anymore");
5179 nl80211_remove_monitor_interface(drv);
5183 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5185 struct i802_bss *bss = priv;
5186 struct wpa_driver_nl80211_data *drv = bss->drv;
5188 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5189 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5190 "allowed in station mode (iftype=%d)",
5194 drv->probe_req_report = report;
5197 eloop_cancel_timeout(
5198 wpa_driver_nl80211_probe_req_report_timeout,
5200 if (drv->monitor_ifidx < 0 &&
5201 nl80211_create_monitor_interface(drv))
5205 * It takes a while to remove the monitor interface, so try to
5206 * avoid doing this if it is needed again shortly. Instead,
5207 * schedule the interface to be removed later if no need for it
5210 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5211 "to be removed after 10 seconds of no use");
5212 eloop_register_timeout(
5213 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5221 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5222 int ifindex, int disabled)
5225 struct nlattr *bands, *band;
5228 msg = nlmsg_alloc();
5232 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5233 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5234 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5236 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5238 goto nla_put_failure;
5241 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5242 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5243 * rates. All 5 GHz rates are left enabled.
5245 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5247 goto nla_put_failure;
5248 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5249 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5250 nla_nest_end(msg, band);
5252 nla_nest_end(msg, bands);
5254 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5257 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5258 "(%s)", ret, strerror(-ret));
5269 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5271 struct i802_bss *bss = priv;
5272 struct wpa_driver_nl80211_data *drv = bss->drv;
5273 drv->disable_11b_rates = disabled;
5274 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5278 static int wpa_driver_nl80211_deinit_ap(void *priv)
5280 struct i802_bss *bss = priv;
5281 struct wpa_driver_nl80211_data *drv = bss->drv;
5282 if (drv->nlmode != NL80211_IFTYPE_AP)
5284 wpa_driver_nl80211_del_beacon(drv);
5285 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5289 static void wpa_driver_nl80211_resume(void *priv)
5291 struct i802_bss *bss = priv;
5292 struct wpa_driver_nl80211_data *drv = bss->drv;
5293 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5294 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5300 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5301 const u8 *ies, size_t ies_len)
5303 struct i802_bss *bss = priv;
5304 struct wpa_driver_nl80211_data *drv = bss->drv;
5308 u8 own_addr[ETH_ALEN];
5310 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5314 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5315 "action %d", action);
5320 * Action frame payload:
5321 * Category[1] = 6 (Fast BSS Transition)
5322 * Action[1] = 1 (Fast BSS Transition Request)
5328 data_len = 2 + 2 * ETH_ALEN + ies_len;
5329 data = os_malloc(data_len);
5333 *pos++ = 0x06; /* FT Action category */
5335 os_memcpy(pos, own_addr, ETH_ALEN);
5337 os_memcpy(pos, target_ap, ETH_ALEN);
5339 os_memcpy(pos, ies, ies_len);
5341 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5342 own_addr, drv->bssid,
5350 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5352 struct i802_bss *bss = priv;
5353 struct wpa_driver_nl80211_data *drv = bss->drv;
5354 struct nl_msg *msg, *cqm = NULL;
5356 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5357 "hysteresis=%d", threshold, hysteresis);
5359 msg = nlmsg_alloc();
5363 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5364 0, NL80211_CMD_SET_CQM, 0);
5366 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5368 cqm = nlmsg_alloc();
5372 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5373 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5374 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5376 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5388 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5391 struct i802_bss *bss = priv;
5392 struct wpa_driver_nl80211_data *drv = bss->drv;
5393 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5397 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5399 .desc = "Linux nl80211/cfg80211",
5400 .get_bssid = wpa_driver_nl80211_get_bssid,
5401 .get_ssid = wpa_driver_nl80211_get_ssid,
5402 .set_key = wpa_driver_nl80211_set_key,
5403 .scan2 = wpa_driver_nl80211_scan,
5404 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5405 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5406 .disassociate = wpa_driver_nl80211_disassociate,
5407 .authenticate = wpa_driver_nl80211_authenticate,
5408 .associate = wpa_driver_nl80211_associate,
5409 .init = wpa_driver_nl80211_init,
5410 .deinit = wpa_driver_nl80211_deinit,
5411 .get_capa = wpa_driver_nl80211_get_capa,
5412 .set_operstate = wpa_driver_nl80211_set_operstate,
5413 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5414 .set_country = wpa_driver_nl80211_set_country,
5415 .set_beacon = wpa_driver_nl80211_set_beacon,
5416 .if_add = wpa_driver_nl80211_if_add,
5417 .if_remove = wpa_driver_nl80211_if_remove,
5418 .send_mlme = wpa_driver_nl80211_send_mlme,
5419 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5420 .sta_add = wpa_driver_nl80211_sta_add,
5421 .sta_remove = wpa_driver_nl80211_sta_remove,
5422 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5423 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5425 .hapd_init = i802_init,
5426 .hapd_deinit = i802_deinit,
5427 .get_seqnum = i802_get_seqnum,
5428 .flush = i802_flush,
5429 .read_sta_data = i802_read_sta_data,
5430 .sta_deauth = i802_sta_deauth,
5431 .sta_disassoc = i802_sta_disassoc,
5432 .get_inact_sec = i802_get_inact_sec,
5433 .sta_clear_stats = i802_sta_clear_stats,
5434 .set_rts = i802_set_rts,
5435 .set_frag = i802_set_frag,
5436 .set_rate_sets = i802_set_rate_sets,
5437 .set_cts_protect = i802_set_cts_protect,
5438 .set_preamble = i802_set_preamble,
5439 .set_short_slot_time = i802_set_short_slot_time,
5440 .set_tx_queue_params = i802_set_tx_queue_params,
5441 .set_sta_vlan = i802_set_sta_vlan,
5442 .set_wds_sta = i802_set_wds_sta,
5443 #endif /* HOSTAPD */
5444 .set_freq = i802_set_freq,
5445 .send_action = wpa_driver_nl80211_send_action,
5446 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5447 .cancel_remain_on_channel =
5448 wpa_driver_nl80211_cancel_remain_on_channel,
5449 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5450 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5451 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5452 .resume = wpa_driver_nl80211_resume,
5453 .send_ft_action = nl80211_send_ft_action,
5454 .signal_monitor = nl80211_signal_monitor,
5455 .send_frame = nl80211_send_frame,