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 "
693 (long long unsigned int) cookie_val,
694 cookie_val == drv->send_action_cookie ?
695 " (match)" : " (unknown)", ack != NULL);
696 if (cookie_val != drv->send_action_cookie)
699 hdr = (const struct ieee80211_hdr *) frame;
700 fc = le_to_host16(hdr->frame_control);
702 os_memset(&event, 0, sizeof(event));
703 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
704 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
705 event.tx_status.dst = hdr->addr1;
706 event.tx_status.data = frame;
707 event.tx_status.data_len = len;
708 event.tx_status.ack = ack != NULL;
709 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
713 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
714 enum wpa_event_type type,
715 const u8 *frame, size_t len)
717 const struct ieee80211_mgmt *mgmt;
718 union wpa_event_data event;
719 const u8 *bssid = NULL;
723 os_memset(&event, 0, sizeof(event));
725 mgmt = (const struct ieee80211_mgmt *) frame;
728 /* Note: Same offset for Reason Code in both frame subtypes */
729 if (len >= 24 + sizeof(mgmt->u.deauth))
730 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
732 if (type == EVENT_DISASSOC) {
733 event.disassoc_info.addr = bssid;
734 event.disassoc_info.reason_code = reason_code;
736 event.deauth_info.addr = bssid;
737 event.deauth_info.reason_code = reason_code;
740 wpa_supplicant_event(drv->ctx, type, &event);
744 static void mlme_event(struct wpa_driver_nl80211_data *drv,
745 enum nl80211_commands cmd, struct nlattr *frame,
746 struct nlattr *addr, struct nlattr *timed_out,
747 struct nlattr *freq, struct nlattr *ack,
748 struct nlattr *cookie)
750 if (timed_out && addr) {
751 mlme_timeout_event(drv, cmd, addr);
756 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
761 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
762 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
763 nla_data(frame), nla_len(frame));
766 case NL80211_CMD_AUTHENTICATE:
767 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
769 case NL80211_CMD_ASSOCIATE:
770 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
772 case NL80211_CMD_DEAUTHENTICATE:
773 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
774 nla_data(frame), nla_len(frame));
776 case NL80211_CMD_DISASSOCIATE:
777 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
778 nla_data(frame), nla_len(frame));
780 case NL80211_CMD_ACTION:
781 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
783 case NL80211_CMD_ACTION_TX_STATUS:
784 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
785 nla_len(frame), ack);
793 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
796 union wpa_event_data data;
798 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
799 os_memset(&data, 0, sizeof(data));
800 if (tb[NL80211_ATTR_MAC]) {
801 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
802 nla_data(tb[NL80211_ATTR_MAC]),
803 nla_len(tb[NL80211_ATTR_MAC]));
804 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
806 if (tb[NL80211_ATTR_KEY_SEQ]) {
807 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
808 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
809 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
811 if (tb[NL80211_ATTR_KEY_TYPE]) {
812 enum nl80211_key_type key_type =
813 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
814 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
815 if (key_type == NL80211_KEYTYPE_PAIRWISE)
816 data.michael_mic_failure.unicast = 1;
818 data.michael_mic_failure.unicast = 1;
820 if (tb[NL80211_ATTR_KEY_IDX]) {
821 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
822 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
825 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
829 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
832 if (tb[NL80211_ATTR_MAC] == NULL) {
833 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
837 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
839 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
840 MAC2STR(drv->bssid));
842 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
846 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
847 int cancel_event, struct nlattr *tb[])
849 unsigned int freq, chan_type, duration;
850 union wpa_event_data data;
853 if (tb[NL80211_ATTR_WIPHY_FREQ])
854 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
858 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
859 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
863 if (tb[NL80211_ATTR_DURATION])
864 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
868 if (tb[NL80211_ATTR_COOKIE])
869 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
873 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
874 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
875 cancel_event, freq, chan_type, duration,
876 (long long unsigned int) cookie,
877 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
879 if (cookie != drv->remain_on_chan_cookie)
880 return; /* not for us */
882 drv->pending_remain_on_chan = !cancel_event;
884 os_memset(&data, 0, sizeof(data));
885 data.remain_on_channel.freq = freq;
886 data.remain_on_channel.duration = duration;
887 wpa_supplicant_event(drv->ctx, cancel_event ?
888 EVENT_CANCEL_REMAIN_ON_CHANNEL :
889 EVENT_REMAIN_ON_CHANNEL, &data);
893 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
896 union wpa_event_data event;
899 struct scan_info *info;
900 #define MAX_REPORT_FREQS 50
901 int freqs[MAX_REPORT_FREQS];
904 os_memset(&event, 0, sizeof(event));
905 info = &event.scan_info;
906 info->aborted = aborted;
908 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
909 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
910 struct wpa_driver_scan_ssid *s =
911 &info->ssids[info->num_ssids];
912 s->ssid = nla_data(nl);
913 s->ssid_len = nla_len(nl);
915 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
919 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
920 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
922 freqs[num_freqs] = nla_get_u32(nl);
924 if (num_freqs == MAX_REPORT_FREQS - 1)
928 info->num_freqs = num_freqs;
930 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
934 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
937 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
938 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
939 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
940 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
942 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
943 enum nl80211_cqm_rssi_threshold_event event;
944 union wpa_event_data ed;
946 if (tb[NL80211_ATTR_CQM] == NULL ||
947 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
949 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
953 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
955 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
957 os_memset(&ed, 0, sizeof(ed));
959 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
960 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
962 ed.signal_change.above_threshold = 1;
963 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
964 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
966 ed.signal_change.above_threshold = 0;
970 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
974 static int process_event(struct nl_msg *msg, void *arg)
976 struct wpa_driver_nl80211_data *drv = arg;
977 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
978 struct nlattr *tb[NL80211_ATTR_MAX + 1];
979 union wpa_event_data data;
981 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
982 genlmsg_attrlen(gnlh, 0), NULL);
984 if (tb[NL80211_ATTR_IFINDEX]) {
985 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
986 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
987 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
988 " for foreign interface (ifindex %d)",
994 if (drv->ap_scan_as_station &&
995 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
996 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
997 wpa_driver_nl80211_set_mode(&drv->first_bss,
999 drv->ap_scan_as_station = 0;
1002 switch (gnlh->cmd) {
1003 case NL80211_CMD_TRIGGER_SCAN:
1004 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1006 case NL80211_CMD_NEW_SCAN_RESULTS:
1007 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1008 drv->scan_complete_events = 1;
1009 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1011 send_scan_event(drv, 0, tb);
1013 case NL80211_CMD_SCAN_ABORTED:
1014 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1016 * Need to indicate that scan results are available in order
1017 * not to make wpa_supplicant stop its scanning.
1019 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1021 send_scan_event(drv, 1, tb);
1023 case NL80211_CMD_AUTHENTICATE:
1024 case NL80211_CMD_ASSOCIATE:
1025 case NL80211_CMD_DEAUTHENTICATE:
1026 case NL80211_CMD_DISASSOCIATE:
1027 case NL80211_CMD_ACTION:
1028 case NL80211_CMD_ACTION_TX_STATUS:
1029 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1030 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1031 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1032 tb[NL80211_ATTR_COOKIE]);
1034 case NL80211_CMD_CONNECT:
1035 case NL80211_CMD_ROAM:
1036 mlme_event_connect(drv, gnlh->cmd,
1037 tb[NL80211_ATTR_STATUS_CODE],
1038 tb[NL80211_ATTR_MAC],
1039 tb[NL80211_ATTR_REQ_IE],
1040 tb[NL80211_ATTR_RESP_IE]);
1042 case NL80211_CMD_DISCONNECT:
1043 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1045 * Avoid reporting two disassociation events that could
1046 * confuse the core code.
1048 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1049 "event when using userspace SME");
1052 drv->associated = 0;
1053 os_memset(&data, 0, sizeof(data));
1054 if (tb[NL80211_ATTR_REASON_CODE])
1055 data.disassoc_info.reason_code =
1056 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1057 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1059 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1060 mlme_event_michael_mic_failure(drv, tb);
1062 case NL80211_CMD_JOIN_IBSS:
1063 mlme_event_join_ibss(drv, tb);
1065 case NL80211_CMD_REMAIN_ON_CHANNEL:
1066 mlme_event_remain_on_channel(drv, 0, tb);
1068 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1069 mlme_event_remain_on_channel(drv, 1, tb);
1071 case NL80211_CMD_NOTIFY_CQM:
1072 nl80211_cqm_event(drv, tb);
1075 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1076 "(cmd=%d)", gnlh->cmd);
1084 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1088 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1090 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1092 cb = nl_cb_clone(drv->nl_cb);
1095 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1096 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1097 nl_recvmsgs(drv->nl_handle_event, cb);
1103 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1104 * @priv: driver_nl80211 private data
1105 * @alpha2_arg: country to which to switch to
1106 * Returns: 0 on success, -1 on failure
1108 * This asks nl80211 to set the regulatory domain for given
1109 * country ISO / IEC alpha2.
1111 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1113 struct i802_bss *bss = priv;
1114 struct wpa_driver_nl80211_data *drv = bss->drv;
1118 msg = nlmsg_alloc();
1122 alpha2[0] = alpha2_arg[0];
1123 alpha2[1] = alpha2_arg[1];
1126 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1127 0, NL80211_CMD_REQ_SET_REG, 0);
1129 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1130 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1139 struct wiphy_info_data {
1143 int connect_supported;
1147 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1149 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1150 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1151 struct wiphy_info_data *info = arg;
1153 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1154 genlmsg_attrlen(gnlh, 0), NULL);
1156 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1157 info->max_scan_ssids =
1158 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1160 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1161 struct nlattr *nl_mode;
1163 nla_for_each_nested(nl_mode,
1164 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1165 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1166 info->ap_supported = 1;
1172 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1173 struct nlattr *nl_cmd;
1176 nla_for_each_nested(nl_cmd,
1177 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1178 u32 cmd = nla_get_u32(nl_cmd);
1179 if (cmd == NL80211_CMD_AUTHENTICATE)
1180 info->auth_supported = 1;
1181 else if (cmd == NL80211_CMD_CONNECT)
1182 info->connect_supported = 1;
1190 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1191 struct wiphy_info_data *info)
1195 os_memset(info, 0, sizeof(*info));
1196 msg = nlmsg_alloc();
1200 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1201 0, NL80211_CMD_GET_WIPHY, 0);
1203 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1205 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1214 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1216 struct wiphy_info_data info;
1217 if (wpa_driver_nl80211_get_info(drv, &info))
1219 drv->has_capability = 1;
1220 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1221 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1222 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1223 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1224 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1225 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1226 WPA_DRIVER_CAPA_ENC_WEP104 |
1227 WPA_DRIVER_CAPA_ENC_TKIP |
1228 WPA_DRIVER_CAPA_ENC_CCMP;
1229 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1230 WPA_DRIVER_AUTH_SHARED |
1231 WPA_DRIVER_AUTH_LEAP;
1233 drv->capa.max_scan_ssids = info.max_scan_ssids;
1234 if (info.ap_supported)
1235 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1237 if (info.auth_supported)
1238 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1239 else if (!info.connect_supported) {
1240 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1241 "authentication/association or connect commands");
1245 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1246 drv->capa.max_remain_on_chan = 5000;
1250 #endif /* HOSTAPD */
1253 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1258 /* Initialize generic netlink and nl80211 */
1260 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1261 if (drv->nl_cb == NULL) {
1262 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1267 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1268 if (drv->nl_handle == NULL) {
1269 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1274 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1275 if (drv->nl_handle_event == NULL) {
1276 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1277 "callbacks (event)");
1281 if (genl_connect(drv->nl_handle)) {
1282 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1287 if (genl_connect(drv->nl_handle_event)) {
1288 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1293 #ifdef CONFIG_LIBNL20
1294 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1295 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1299 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1301 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1302 "netlink cache (event)");
1305 #else /* CONFIG_LIBNL20 */
1306 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1307 if (drv->nl_cache == NULL) {
1308 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1312 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1313 if (drv->nl_cache_event == NULL) {
1314 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1315 "netlink cache (event)");
1318 #endif /* CONFIG_LIBNL20 */
1320 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1321 if (drv->nl80211 == NULL) {
1322 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1327 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1329 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1331 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1332 "membership for scan events: %d (%s)",
1333 ret, strerror(-ret));
1337 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1339 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1341 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1342 "membership for mlme events: %d (%s)",
1343 ret, strerror(-ret));
1347 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1348 wpa_driver_nl80211_event_receive, drv, ctx);
1353 nl_cache_free(drv->nl_cache_event);
1355 nl_cache_free(drv->nl_cache);
1357 nl_handle_destroy(drv->nl_handle_event);
1359 nl_handle_destroy(drv->nl_handle);
1361 nl_cb_put(drv->nl_cb);
1367 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1369 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1371 * This may be for any interface; use ifdown event to disable
1377 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1379 struct wpa_driver_nl80211_data *drv = ctx;
1380 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1381 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1382 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1383 "after rfkill unblock");
1386 /* rtnetlink ifup handler will report interface as enabled */
1391 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1392 * @ctx: context to be used when calling wpa_supplicant functions,
1393 * e.g., wpa_supplicant_event()
1394 * @ifname: interface name, e.g., wlan0
1395 * Returns: Pointer to private data, %NULL on failure
1397 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1399 struct wpa_driver_nl80211_data *drv;
1400 struct netlink_config *cfg;
1401 struct rfkill_config *rcfg;
1402 struct i802_bss *bss;
1404 drv = os_zalloc(sizeof(*drv));
1408 bss = &drv->first_bss;
1410 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1411 drv->monitor_ifidx = -1;
1412 drv->monitor_sock = -1;
1413 drv->ioctl_sock = -1;
1415 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1420 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1421 if (drv->ioctl_sock < 0) {
1422 perror("socket(PF_INET,SOCK_DGRAM)");
1426 cfg = os_zalloc(sizeof(*cfg));
1430 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1431 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1432 drv->netlink = netlink_init(cfg);
1433 if (drv->netlink == NULL) {
1438 rcfg = os_zalloc(sizeof(*rcfg));
1442 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1443 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1444 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1445 drv->rfkill = rfkill_init(rcfg);
1446 if (drv->rfkill == NULL) {
1447 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1451 if (wpa_driver_nl80211_finish_drv_init(drv))
1457 rfkill_deinit(drv->rfkill);
1458 netlink_deinit(drv->netlink);
1459 if (drv->ioctl_sock >= 0)
1460 close(drv->ioctl_sock);
1462 genl_family_put(drv->nl80211);
1463 nl_cache_free(drv->nl_cache);
1464 nl_handle_destroy(drv->nl_handle);
1465 nl_cb_put(drv->nl_cb);
1466 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1473 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1474 const u8 *match, size_t match_len)
1479 msg = nlmsg_alloc();
1483 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1484 NL80211_CMD_REGISTER_ACTION, 0);
1486 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1487 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1489 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1492 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1493 "failed: ret=%d (%s)", ret, strerror(-ret));
1494 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1496 goto nla_put_failure;
1505 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1507 /* FT Action frames */
1508 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1511 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1512 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1518 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1520 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1525 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1527 struct i802_bss *bss = &drv->first_bss;
1528 int send_rfkill_event = 0;
1530 drv->ifindex = if_nametoindex(bss->ifname);
1531 drv->first_bss.ifindex = drv->ifindex;
1534 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1535 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1536 "use managed mode");
1539 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1540 if (rfkill_is_blocked(drv->rfkill)) {
1541 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1542 "interface '%s' due to rfkill",
1544 drv->if_disabled = 1;
1545 send_rfkill_event = 1;
1547 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1548 "interface '%s' UP", bss->ifname);
1553 if (wpa_driver_nl80211_capa(drv))
1556 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1557 1, IF_OPER_DORMANT);
1558 #endif /* HOSTAPD */
1560 if (nl80211_register_action_frames(drv) < 0) {
1561 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1562 "frame processing - ignore for now");
1564 * Older kernel versions did not support this, so ignore the
1565 * error for now. Some functionality may not be available
1570 if (send_rfkill_event) {
1571 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1579 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1583 msg = nlmsg_alloc();
1587 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1588 0, NL80211_CMD_DEL_BEACON, 0);
1589 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1591 return send_and_recv_msgs(drv, msg, NULL, NULL);
1598 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1599 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1601 * Shut down driver interface and processing of driver events. Free
1602 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1604 static void wpa_driver_nl80211_deinit(void *priv)
1606 struct i802_bss *bss = priv;
1607 struct wpa_driver_nl80211_data *drv = bss->drv;
1609 if (drv->added_if_into_bridge) {
1610 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1612 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1613 "interface %s from bridge %s: %s",
1614 bss->ifname, drv->brname, strerror(errno));
1616 if (drv->added_bridge) {
1617 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1618 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1620 drv->brname, strerror(errno));
1623 nl80211_remove_monitor_interface(drv);
1625 if (drv->nlmode == NL80211_IFTYPE_AP)
1626 wpa_driver_nl80211_del_beacon(drv);
1629 if (drv->last_freq_ht) {
1630 /* Clear HT flags from the driver */
1631 struct hostapd_freq_params freq;
1632 os_memset(&freq, 0, sizeof(freq));
1633 freq.freq = drv->last_freq;
1634 i802_set_freq(priv, &freq);
1637 if (drv->eapol_sock >= 0) {
1638 eloop_unregister_read_sock(drv->eapol_sock);
1639 close(drv->eapol_sock);
1642 if (drv->if_indices != drv->default_if_indices)
1643 os_free(drv->if_indices);
1644 #endif /* HOSTAPD */
1646 if (drv->disable_11b_rates)
1647 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1649 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1650 netlink_deinit(drv->netlink);
1651 rfkill_deinit(drv->rfkill);
1653 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1655 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1656 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1658 if (drv->ioctl_sock >= 0)
1659 close(drv->ioctl_sock);
1661 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1662 genl_family_put(drv->nl80211);
1663 nl_cache_free(drv->nl_cache);
1664 nl_cache_free(drv->nl_cache_event);
1665 nl_handle_destroy(drv->nl_handle);
1666 nl_handle_destroy(drv->nl_handle_event);
1667 nl_cb_put(drv->nl_cb);
1669 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1672 os_free(drv->filter_ssids);
1679 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1680 * @eloop_ctx: Driver private data
1681 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1683 * This function can be used as registered timeout when starting a scan to
1684 * generate a scan completed event if the driver does not report this.
1686 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1688 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1689 if (drv->ap_scan_as_station) {
1690 wpa_driver_nl80211_set_mode(&drv->first_bss,
1692 drv->ap_scan_as_station = 0;
1694 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1695 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1700 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1701 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1702 * @params: Scan parameters
1703 * Returns: 0 on success, -1 on failure
1705 static int wpa_driver_nl80211_scan(void *priv,
1706 struct wpa_driver_scan_params *params)
1708 struct i802_bss *bss = priv;
1709 struct wpa_driver_nl80211_data *drv = bss->drv;
1710 int ret = 0, timeout;
1711 struct nl_msg *msg, *ssids, *freqs;
1714 msg = nlmsg_alloc();
1715 ssids = nlmsg_alloc();
1716 freqs = nlmsg_alloc();
1717 if (!msg || !ssids || !freqs) {
1724 os_free(drv->filter_ssids);
1725 drv->filter_ssids = params->filter_ssids;
1726 params->filter_ssids = NULL;
1727 drv->num_filter_ssids = params->num_filter_ssids;
1729 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1730 NL80211_CMD_TRIGGER_SCAN, 0);
1732 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1734 for (i = 0; i < params->num_ssids; i++) {
1735 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1736 params->ssids[i].ssid,
1737 params->ssids[i].ssid_len);
1738 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1739 params->ssids[i].ssid);
1741 if (params->num_ssids)
1742 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1744 if (params->extra_ies) {
1745 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1746 params->extra_ies, params->extra_ies_len);
1747 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1751 if (params->freqs) {
1752 for (i = 0; params->freqs[i]; i++) {
1753 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1754 "MHz", params->freqs[i]);
1755 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1757 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1760 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1763 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1764 "(%s)", ret, strerror(-ret));
1766 if (drv->nlmode == NL80211_IFTYPE_AP) {
1768 * mac80211 does not allow scan requests in AP mode, so
1769 * try to do this in station mode.
1771 if (wpa_driver_nl80211_set_mode(bss,
1772 IEEE80211_MODE_INFRA))
1773 goto nla_put_failure;
1775 if (wpa_driver_nl80211_scan(drv, params)) {
1776 wpa_driver_nl80211_set_mode(bss,
1778 goto nla_put_failure;
1781 /* Restore AP mode when processing scan results */
1782 drv->ap_scan_as_station = 1;
1785 goto nla_put_failure;
1787 goto nla_put_failure;
1788 #endif /* HOSTAPD */
1791 /* Not all drivers generate "scan completed" wireless event, so try to
1792 * read results after a timeout. */
1794 if (drv->scan_complete_events) {
1796 * The driver seems to deliver events to notify when scan is
1797 * complete, so use longer timeout to avoid race conditions
1798 * with scanning and following association request.
1802 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1803 "seconds", ret, timeout);
1804 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1805 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1816 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1818 const u8 *end, *pos;
1824 end = ies + ies_len;
1826 while (pos + 1 < end) {
1827 if (pos + 2 + pos[1] > end)
1838 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1839 const u8 *ie, size_t ie_len)
1844 if (drv->filter_ssids == NULL)
1847 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1851 for (i = 0; i < drv->num_filter_ssids; i++) {
1852 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1853 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1862 struct nl80211_bss_info_arg {
1863 struct wpa_driver_nl80211_data *drv;
1864 struct wpa_scan_results *res;
1867 static int bss_info_handler(struct nl_msg *msg, void *arg)
1869 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1870 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1871 struct nlattr *bss[NL80211_BSS_MAX + 1];
1872 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1873 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1874 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1875 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1876 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1877 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1878 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1879 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1880 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1881 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1882 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1883 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1885 struct nl80211_bss_info_arg *_arg = arg;
1886 struct wpa_scan_results *res = _arg->res;
1887 struct wpa_scan_res **tmp;
1888 struct wpa_scan_res *r;
1889 const u8 *ie, *beacon_ie;
1890 size_t ie_len, beacon_ie_len;
1893 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1894 genlmsg_attrlen(gnlh, 0), NULL);
1895 if (!tb[NL80211_ATTR_BSS])
1897 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1900 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1901 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1902 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1907 if (bss[NL80211_BSS_BEACON_IES]) {
1908 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1909 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1915 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1916 ie ? ie_len : beacon_ie_len))
1919 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1922 if (bss[NL80211_BSS_BSSID])
1923 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1925 if (bss[NL80211_BSS_FREQUENCY])
1926 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1927 if (bss[NL80211_BSS_BEACON_INTERVAL])
1928 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1929 if (bss[NL80211_BSS_CAPABILITY])
1930 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1931 r->flags |= WPA_SCAN_NOISE_INVALID;
1932 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1933 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1934 r->level /= 100; /* mBm to dBm */
1935 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1936 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1937 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1938 r->flags |= WPA_SCAN_LEVEL_INVALID;
1940 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1941 if (bss[NL80211_BSS_TSF])
1942 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1943 if (bss[NL80211_BSS_SEEN_MS_AGO])
1944 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1946 pos = (u8 *) (r + 1);
1948 os_memcpy(pos, ie, ie_len);
1951 r->beacon_ie_len = beacon_ie_len;
1953 os_memcpy(pos, beacon_ie, beacon_ie_len);
1955 if (bss[NL80211_BSS_STATUS]) {
1956 enum nl80211_bss_status status;
1957 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1959 case NL80211_BSS_STATUS_AUTHENTICATED:
1960 r->flags |= WPA_SCAN_AUTHENTICATED;
1962 case NL80211_BSS_STATUS_ASSOCIATED:
1963 r->flags |= WPA_SCAN_ASSOCIATED;
1970 tmp = os_realloc(res->res,
1971 (res->num + 1) * sizeof(struct wpa_scan_res *));
1976 tmp[res->num++] = r;
1983 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1986 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1987 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1988 "mismatch (" MACSTR ")", MAC2STR(addr));
1989 wpa_driver_nl80211_mlme(drv, addr,
1990 NL80211_CMD_DEAUTHENTICATE,
1991 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
1996 static void wpa_driver_nl80211_check_bss_status(
1997 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2001 for (i = 0; i < res->num; i++) {
2002 struct wpa_scan_res *r = res->res[i];
2003 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2004 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2005 "indicates BSS status with " MACSTR
2006 " as authenticated",
2008 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2009 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2010 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2012 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2013 " in local state (auth=" MACSTR
2014 " assoc=" MACSTR ")",
2015 MAC2STR(drv->auth_bssid),
2016 MAC2STR(drv->bssid));
2017 clear_state_mismatch(drv, r->bssid);
2021 if (r->flags & WPA_SCAN_ASSOCIATED) {
2022 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2023 "indicate BSS status with " MACSTR
2026 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2028 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2029 "(not associated) does not match "
2031 clear_state_mismatch(drv, r->bssid);
2032 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2033 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2035 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2036 "(associated with " MACSTR ") does "
2037 "not match with BSS state",
2038 MAC2STR(drv->bssid));
2039 clear_state_mismatch(drv, r->bssid);
2040 clear_state_mismatch(drv, drv->bssid);
2047 static void wpa_scan_results_free(struct wpa_scan_results *res)
2054 for (i = 0; i < res->num; i++)
2055 os_free(res->res[i]);
2061 static struct wpa_scan_results *
2062 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2065 struct wpa_scan_results *res;
2067 struct nl80211_bss_info_arg arg;
2069 res = os_zalloc(sizeof(*res));
2072 msg = nlmsg_alloc();
2074 goto nla_put_failure;
2076 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2077 NL80211_CMD_GET_SCAN, 0);
2078 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2082 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2085 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2086 (unsigned long) res->num);
2089 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2090 "(%s)", ret, strerror(-ret));
2093 wpa_scan_results_free(res);
2099 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2100 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2101 * Returns: Scan results on success, -1 on failure
2103 static struct wpa_scan_results *
2104 wpa_driver_nl80211_get_scan_results(void *priv)
2106 struct i802_bss *bss = priv;
2107 struct wpa_driver_nl80211_data *drv = bss->drv;
2108 struct wpa_scan_results *res;
2110 res = nl80211_get_scan_results(drv);
2112 wpa_driver_nl80211_check_bss_status(drv, res);
2117 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2119 struct wpa_scan_results *res;
2122 res = nl80211_get_scan_results(drv);
2124 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2128 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2129 for (i = 0; i < res->num; i++) {
2130 struct wpa_scan_res *r = res->res[i];
2131 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2132 (int) i, (int) res->num, MAC2STR(r->bssid),
2133 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2134 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2137 wpa_scan_results_free(res);
2141 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2142 enum wpa_alg alg, const u8 *addr,
2143 int key_idx, int set_tx,
2144 const u8 *seq, size_t seq_len,
2145 const u8 *key, size_t key_len)
2147 struct i802_bss *bss = priv;
2148 struct wpa_driver_nl80211_data *drv = bss->drv;
2149 int ifindex = if_nametoindex(ifname);
2153 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2154 "set_tx=%d seq_len=%lu key_len=%lu",
2155 __func__, ifindex, alg, addr, key_idx, set_tx,
2156 (unsigned long) seq_len, (unsigned long) key_len);
2158 msg = nlmsg_alloc();
2162 if (alg == WPA_ALG_NONE) {
2163 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2164 0, NL80211_CMD_DEL_KEY, 0);
2166 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2167 0, NL80211_CMD_NEW_KEY, 0);
2168 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2172 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2173 WLAN_CIPHER_SUITE_WEP40);
2175 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2176 WLAN_CIPHER_SUITE_WEP104);
2179 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2180 WLAN_CIPHER_SUITE_TKIP);
2183 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2184 WLAN_CIPHER_SUITE_CCMP);
2187 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2188 WLAN_CIPHER_SUITE_AES_CMAC);
2191 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2192 "algorithm %d", __func__, alg);
2199 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2201 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2203 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2204 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2206 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2207 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2209 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2210 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2213 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2214 ret, strerror(-ret));
2217 * If we failed or don't need to set the default TX key (below),
2220 if (ret || !set_tx || alg == WPA_ALG_NONE)
2226 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2228 #endif /* HOSTAPD */
2230 msg = nlmsg_alloc();
2234 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2235 0, NL80211_CMD_SET_KEY, 0);
2236 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2237 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2238 if (alg == WPA_ALG_IGTK)
2239 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2241 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2243 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2247 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2248 "err=%d %s)", ret, strerror(-ret));
2256 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2257 int key_idx, int defkey,
2258 const u8 *seq, size_t seq_len,
2259 const u8 *key, size_t key_len)
2261 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2265 if (defkey && alg == WPA_ALG_IGTK)
2266 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2268 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2270 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2275 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2276 WLAN_CIPHER_SUITE_WEP40);
2278 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2279 WLAN_CIPHER_SUITE_WEP104);
2282 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2285 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2288 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2289 WLAN_CIPHER_SUITE_AES_CMAC);
2292 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2293 "algorithm %d", __func__, alg);
2298 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2300 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2302 nla_nest_end(msg, key_attr);
2310 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2314 struct nlattr *nl_keys, *nl_key;
2316 for (i = 0; i < 4; i++) {
2317 if (!params->wep_key[i])
2325 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2327 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2329 goto nla_put_failure;
2331 for (i = 0; i < 4; i++) {
2332 if (!params->wep_key[i])
2335 nl_key = nla_nest_start(msg, i);
2337 goto nla_put_failure;
2339 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2340 params->wep_key[i]);
2341 if (params->wep_key_len[i] == 5)
2342 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2343 WLAN_CIPHER_SUITE_WEP40);
2345 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2346 WLAN_CIPHER_SUITE_WEP104);
2348 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2350 if (i == params->wep_tx_keyidx)
2351 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2353 nla_nest_end(msg, nl_key);
2355 nla_nest_end(msg, nl_keys);
2364 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2365 const u8 *addr, int cmd, u16 reason_code,
2366 int local_state_change)
2371 msg = nlmsg_alloc();
2375 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2378 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2379 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2380 if (local_state_change)
2381 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2383 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2386 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2387 "(%s)", ret, strerror(-ret));
2388 goto nla_put_failure;
2398 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2399 const u8 *addr, int reason_code)
2401 wpa_printf(MSG_DEBUG, "%s", __func__);
2402 drv->associated = 0;
2403 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2408 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2411 struct i802_bss *bss = priv;
2412 struct wpa_driver_nl80211_data *drv = bss->drv;
2413 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2414 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2415 wpa_printf(MSG_DEBUG, "%s", __func__);
2416 drv->associated = 0;
2417 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2422 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2425 struct i802_bss *bss = priv;
2426 struct wpa_driver_nl80211_data *drv = bss->drv;
2427 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2428 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2429 wpa_printf(MSG_DEBUG, "%s", __func__);
2430 drv->associated = 0;
2431 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2436 static int wpa_driver_nl80211_authenticate(
2437 void *priv, struct wpa_driver_auth_params *params)
2439 struct i802_bss *bss = priv;
2440 struct wpa_driver_nl80211_data *drv = bss->drv;
2443 enum nl80211_auth_type type;
2446 drv->associated = 0;
2447 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2448 /* FIX: IBSS mode */
2449 if (drv->nlmode != NL80211_IFTYPE_STATION)
2450 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2452 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2456 msg = nlmsg_alloc();
2460 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2463 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2464 NL80211_CMD_AUTHENTICATE, 0);
2466 for (i = 0; i < 4; i++) {
2467 if (!params->wep_key[i])
2469 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2471 i == params->wep_tx_keyidx, NULL, 0,
2473 params->wep_key_len[i]);
2474 if (params->wep_tx_keyidx != i)
2476 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2477 params->wep_key[i], params->wep_key_len[i])) {
2483 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2484 if (params->bssid) {
2485 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2486 MAC2STR(params->bssid));
2487 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2490 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2491 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2494 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2495 params->ssid, params->ssid_len);
2496 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2499 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2501 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2503 * TODO: if multiple auth_alg options enabled, try them one by one if
2504 * the AP rejects authentication due to unknown auth alg
2506 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2507 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2508 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2509 type = NL80211_AUTHTYPE_SHARED_KEY;
2510 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2511 type = NL80211_AUTHTYPE_NETWORK_EAP;
2512 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2513 type = NL80211_AUTHTYPE_FT;
2515 goto nla_put_failure;
2516 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2517 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2518 if (params->local_state_change) {
2519 wpa_printf(MSG_DEBUG, " * Local state change only");
2520 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2523 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2526 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2527 "(%s)", ret, strerror(-ret));
2529 if (ret == -EALREADY && count == 1 && params->bssid &&
2530 !params->local_state_change) {
2532 * mac80211 does not currently accept new
2533 * authentication if we are already authenticated. As a
2534 * workaround, force deauthentication and try again.
2536 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2537 "after forced deauthentication");
2538 wpa_driver_nl80211_deauthenticate(
2540 WLAN_REASON_PREV_AUTH_NOT_VALID);
2544 goto nla_put_failure;
2547 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2556 struct phy_info_arg {
2558 struct hostapd_hw_modes *modes;
2561 static int phy_info_handler(struct nl_msg *msg, void *arg)
2563 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2564 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2565 struct phy_info_arg *phy_info = arg;
2567 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2569 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2570 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2571 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2572 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2573 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2574 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2575 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2576 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2579 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2580 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2581 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2582 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2585 struct nlattr *nl_band;
2586 struct nlattr *nl_freq;
2587 struct nlattr *nl_rate;
2588 int rem_band, rem_freq, rem_rate;
2589 struct hostapd_hw_modes *mode;
2590 int idx, mode_is_set;
2592 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2593 genlmsg_attrlen(gnlh, 0), NULL);
2595 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2598 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2599 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2602 phy_info->modes = mode;
2606 mode = &phy_info->modes[*(phy_info->num_modes)];
2607 memset(mode, 0, sizeof(*mode));
2608 *(phy_info->num_modes) += 1;
2610 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2611 nla_len(nl_band), NULL);
2613 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2614 mode->ht_capab = nla_get_u16(
2615 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2618 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2619 mode->a_mpdu_params |= nla_get_u8(
2620 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2624 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2625 mode->a_mpdu_params |= nla_get_u8(
2626 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2630 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2631 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2633 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2634 os_memcpy(mode->mcs_set, mcs, 16);
2637 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2638 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2639 nla_len(nl_freq), freq_policy);
2640 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2642 mode->num_channels++;
2645 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2646 if (!mode->channels)
2651 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2652 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2653 nla_len(nl_freq), freq_policy);
2654 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2657 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2658 mode->channels[idx].flag = 0;
2661 /* crude heuristic */
2662 if (mode->channels[idx].freq < 4000)
2663 mode->mode = HOSTAPD_MODE_IEEE80211B;
2665 mode->mode = HOSTAPD_MODE_IEEE80211A;
2669 /* crude heuristic */
2670 if (mode->channels[idx].freq < 4000)
2671 if (mode->channels[idx].freq == 2484)
2672 mode->channels[idx].chan = 14;
2674 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2676 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2678 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2679 mode->channels[idx].flag |=
2680 HOSTAPD_CHAN_DISABLED;
2681 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2682 mode->channels[idx].flag |=
2683 HOSTAPD_CHAN_PASSIVE_SCAN;
2684 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2685 mode->channels[idx].flag |=
2686 HOSTAPD_CHAN_NO_IBSS;
2687 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2688 mode->channels[idx].flag |=
2691 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2692 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2693 mode->channels[idx].max_tx_power =
2694 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2699 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2700 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2701 nla_len(nl_rate), rate_policy);
2702 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2707 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2713 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2714 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2715 nla_len(nl_rate), rate_policy);
2716 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2718 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2720 /* crude heuristic */
2721 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2722 mode->rates[idx] > 200)
2723 mode->mode = HOSTAPD_MODE_IEEE80211G;
2732 static struct hostapd_hw_modes *
2733 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2736 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2737 int i, mode11g_idx = -1;
2739 /* If only 802.11g mode is included, use it to construct matching
2740 * 802.11b mode data. */
2742 for (m = 0; m < *num_modes; m++) {
2743 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2744 return modes; /* 802.11b already included */
2745 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2749 if (mode11g_idx < 0)
2750 return modes; /* 2.4 GHz band not supported at all */
2752 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2754 return modes; /* Could not add 802.11b mode */
2756 mode = &nmodes[*num_modes];
2757 os_memset(mode, 0, sizeof(*mode));
2761 mode->mode = HOSTAPD_MODE_IEEE80211B;
2763 mode11g = &modes[mode11g_idx];
2764 mode->num_channels = mode11g->num_channels;
2765 mode->channels = os_malloc(mode11g->num_channels *
2766 sizeof(struct hostapd_channel_data));
2767 if (mode->channels == NULL) {
2769 return modes; /* Could not add 802.11b mode */
2771 os_memcpy(mode->channels, mode11g->channels,
2772 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2774 mode->num_rates = 0;
2775 mode->rates = os_malloc(4 * sizeof(int));
2776 if (mode->rates == NULL) {
2777 os_free(mode->channels);
2779 return modes; /* Could not add 802.11b mode */
2782 for (i = 0; i < mode11g->num_rates; i++) {
2783 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2784 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2786 mode->rates[mode->num_rates] = mode11g->rates[i];
2788 if (mode->num_rates == 4)
2792 if (mode->num_rates == 0) {
2793 os_free(mode->channels);
2794 os_free(mode->rates);
2796 return modes; /* No 802.11b rates */
2799 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2806 static struct hostapd_hw_modes *
2807 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2809 struct i802_bss *bss = priv;
2810 struct wpa_driver_nl80211_data *drv = bss->drv;
2812 struct phy_info_arg result = {
2813 .num_modes = num_modes,
2820 msg = nlmsg_alloc();
2824 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2825 0, NL80211_CMD_GET_WIPHY, 0);
2827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2829 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2830 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2836 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2837 const void *data, size_t len,
2841 0x00, 0x00, /* radiotap version */
2842 0x0e, 0x00, /* radiotap length */
2843 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2844 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2846 0x00, 0x00, /* RX and TX flags to indicate that */
2847 0x00, 0x00, /* this is the injected frame directly */
2849 struct iovec iov[2] = {
2851 .iov_base = &rtap_hdr,
2852 .iov_len = sizeof(rtap_hdr),
2855 .iov_base = (void *) data,
2859 struct msghdr msg = {
2864 .msg_control = NULL,
2865 .msg_controllen = 0,
2870 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2872 return sendmsg(drv->monitor_sock, &msg, 0);
2876 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2879 struct i802_bss *bss = priv;
2880 struct wpa_driver_nl80211_data *drv = bss->drv;
2881 struct ieee80211_mgmt *mgmt;
2885 mgmt = (struct ieee80211_mgmt *) data;
2886 fc = le_to_host16(mgmt->frame_control);
2888 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2889 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2891 * Only one of the authentication frame types is encrypted.
2892 * In order for static WEP encryption to work properly (i.e.,
2893 * to not encrypt the frame), we need to tell mac80211 about
2894 * the frames that must not be encrypted.
2896 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2897 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2898 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2902 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2906 static int wpa_driver_nl80211_set_beacon(void *priv,
2907 const u8 *head, size_t head_len,
2908 const u8 *tail, size_t tail_len,
2909 int dtim_period, int beacon_int)
2911 struct i802_bss *bss = priv;
2912 struct wpa_driver_nl80211_data *drv = bss->drv;
2914 u8 cmd = NL80211_CMD_NEW_BEACON;
2917 int ifindex = if_nametoindex(bss->ifname);
2919 beacon_set = bss->beacon_set;
2921 msg = nlmsg_alloc();
2925 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2928 cmd = NL80211_CMD_SET_BEACON;
2930 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2932 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2933 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2934 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2935 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2936 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2938 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2940 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2941 ret, strerror(-ret));
2943 bss->beacon_set = 1;
2951 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2952 int freq, int ht_enabled,
2953 int sec_channel_offset)
2958 msg = nlmsg_alloc();
2962 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2963 NL80211_CMD_SET_WIPHY, 0);
2965 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2966 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2968 switch (sec_channel_offset) {
2970 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2971 NL80211_CHAN_HT40MINUS);
2974 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2975 NL80211_CHAN_HT40PLUS);
2978 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2984 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2987 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2988 "%d (%s)", freq, ret, strerror(-ret));
2994 static int wpa_driver_nl80211_sta_add(void *priv,
2995 struct hostapd_sta_add_params *params)
2997 struct i802_bss *bss = priv;
2998 struct wpa_driver_nl80211_data *drv = bss->drv;
3002 msg = nlmsg_alloc();
3006 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3007 0, NL80211_CMD_NEW_STATION, 0);
3009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3011 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3012 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3013 params->supp_rates);
3014 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3015 params->listen_interval);
3016 if (params->ht_capabilities) {
3017 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3018 sizeof(*params->ht_capabilities),
3019 params->ht_capabilities);
3022 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3024 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3025 "result: %d (%s)", ret, strerror(-ret));
3033 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3035 struct i802_bss *bss = priv;
3036 struct wpa_driver_nl80211_data *drv = bss->drv;
3040 msg = nlmsg_alloc();
3044 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3045 0, NL80211_CMD_DEL_STATION, 0);
3047 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3048 if_nametoindex(bss->ifname));
3049 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3051 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3060 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3065 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3068 /* stop listening for EAPOL on this interface */
3069 del_ifidx(drv, ifidx);
3070 #endif /* HOSTAPD */
3072 msg = nlmsg_alloc();
3074 goto nla_put_failure;
3076 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3077 0, NL80211_CMD_DEL_INTERFACE, 0);
3078 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3080 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3083 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3087 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3089 enum nl80211_iftype iftype,
3090 const u8 *addr, int wds)
3092 struct nl_msg *msg, *flags = NULL;
3096 msg = nlmsg_alloc();
3100 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3101 0, NL80211_CMD_NEW_INTERFACE, 0);
3102 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3103 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3104 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3106 if (iftype == NL80211_IFTYPE_MONITOR) {
3109 flags = nlmsg_alloc();
3111 goto nla_put_failure;
3113 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3115 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3120 goto nla_put_failure;
3122 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3125 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3128 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3129 ifname, ret, strerror(-ret));
3133 ifidx = if_nametoindex(ifname);
3134 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3141 /* start listening for EAPOL on this interface */
3142 add_ifidx(drv, ifidx);
3143 #endif /* HOSTAPD */
3145 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3146 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3147 nl80211_remove_iface(drv, ifidx);
3155 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3156 const char *ifname, enum nl80211_iftype iftype,
3157 const u8 *addr, int wds)
3161 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3163 /* if error occured and interface exists already */
3164 if (ret == -ENFILE && if_nametoindex(ifname)) {
3165 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3167 /* Try to remove the interface that was already there. */
3168 nl80211_remove_iface(drv, if_nametoindex(ifname));
3170 /* Try to create the interface again */
3171 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3175 if (ret >= 0 && drv->disable_11b_rates)
3176 nl80211_disable_11b_rates(drv, ret, 1);
3182 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3184 struct ieee80211_hdr *hdr;
3186 union wpa_event_data event;
3188 hdr = (struct ieee80211_hdr *) buf;
3189 fc = le_to_host16(hdr->frame_control);
3191 os_memset(&event, 0, sizeof(event));
3192 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3193 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3194 event.tx_status.dst = hdr->addr1;
3195 event.tx_status.data = buf;
3196 event.tx_status.data_len = len;
3197 event.tx_status.ack = ok;
3198 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3202 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3203 u8 *buf, size_t len)
3205 union wpa_event_data event;
3206 os_memset(&event, 0, sizeof(event));
3207 event.rx_from_unknown.frame = buf;
3208 event.rx_from_unknown.len = len;
3209 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3213 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3214 u8 *buf, size_t len, int datarate, int ssi_signal)
3216 struct ieee80211_hdr *hdr;
3218 union wpa_event_data event;
3220 hdr = (struct ieee80211_hdr *) buf;
3221 fc = le_to_host16(hdr->frame_control);
3223 switch (WLAN_FC_GET_TYPE(fc)) {
3224 case WLAN_FC_TYPE_MGMT:
3225 os_memset(&event, 0, sizeof(event));
3226 event.rx_mgmt.frame = buf;
3227 event.rx_mgmt.frame_len = len;
3228 event.rx_mgmt.datarate = datarate;
3229 event.rx_mgmt.ssi_signal = ssi_signal;
3230 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3232 case WLAN_FC_TYPE_CTRL:
3233 /* can only get here with PS-Poll frames */
3234 wpa_printf(MSG_DEBUG, "CTRL");
3235 from_unknown_sta(drv, buf, len);
3237 case WLAN_FC_TYPE_DATA:
3238 from_unknown_sta(drv, buf, len);
3244 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3246 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3248 unsigned char buf[3000];
3249 struct ieee80211_radiotap_iterator iter;
3251 int datarate = 0, ssi_signal = 0;
3252 int injected = 0, failed = 0, rxflags = 0;
3254 len = recv(sock, buf, sizeof(buf), 0);
3260 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3261 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3262 "frame since Probe Request reporting is disabled");
3266 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3267 printf("received invalid radiotap frame\n");
3272 ret = ieee80211_radiotap_iterator_next(&iter);
3276 printf("received invalid radiotap frame (%d)\n", ret);
3279 switch (iter.this_arg_index) {
3280 case IEEE80211_RADIOTAP_FLAGS:
3281 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3284 case IEEE80211_RADIOTAP_RX_FLAGS:
3287 case IEEE80211_RADIOTAP_TX_FLAGS:
3289 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3290 IEEE80211_RADIOTAP_F_TX_FAIL;
3292 case IEEE80211_RADIOTAP_DATA_RETRIES:
3294 case IEEE80211_RADIOTAP_CHANNEL:
3295 /* TODO: convert from freq/flags to channel number */
3297 case IEEE80211_RADIOTAP_RATE:
3298 datarate = *iter.this_arg * 5;
3300 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3301 ssi_signal = *iter.this_arg;
3306 if (rxflags && injected)
3310 handle_frame(drv, buf + iter.max_length,
3311 len - iter.max_length, datarate, ssi_signal);
3313 handle_tx_callback(drv->ctx, buf + iter.max_length,
3314 len - iter.max_length, !failed);
3319 * we post-process the filter code later and rewrite
3320 * this to the offset to the last instruction
3325 static struct sock_filter msock_filter_insns[] = {
3327 * do a little-endian load of the radiotap length field
3329 /* load lower byte into A */
3330 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3331 /* put it into X (== index register) */
3332 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3333 /* load upper byte into A */
3334 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3335 /* left-shift it by 8 */
3336 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3338 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3339 /* put result into X */
3340 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3343 * Allow management frames through, this also gives us those
3344 * management frames that we sent ourselves with status
3346 /* load the lower byte of the IEEE 802.11 frame control field */
3347 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3348 /* mask off frame type and version */
3349 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3350 /* accept frame if it's both 0, fall through otherwise */
3351 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3354 * TODO: add a bit to radiotap RX flags that indicates
3355 * that the sending station is not associated, then
3356 * add a filter here that filters on our DA and that flag
3357 * to allow us to deauth frames to that bad station.
3359 * Not a regression -- we didn't do it before either.
3364 * drop non-data frames
3366 /* load the lower byte of the frame control field */
3367 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3368 /* mask off QoS bit */
3369 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3370 /* drop non-data frames */
3371 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3373 /* load the upper byte of the frame control field */
3374 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3375 /* mask off toDS/fromDS */
3376 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3377 /* accept WDS frames */
3378 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3381 * add header length to index
3383 /* load the lower byte of the frame control field */
3384 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3385 /* mask off QoS bit */
3386 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3387 /* right shift it by 6 to give 0 or 2 */
3388 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3389 /* add data frame header length */
3390 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3391 /* add index, was start of 802.11 header */
3392 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3393 /* move to index, now start of LL header */
3394 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3397 * Accept empty data frames, we use those for
3400 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3401 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3404 * Accept EAPOL frames
3406 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3407 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3408 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3409 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3411 /* keep these last two statements or change the code below */
3412 /* return 0 == "DROP" */
3413 BPF_STMT(BPF_RET | BPF_K, 0),
3414 /* return ~0 == "keep all" */
3415 BPF_STMT(BPF_RET | BPF_K, ~0),
3418 static struct sock_fprog msock_filter = {
3419 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3420 .filter = msock_filter_insns,
3424 static int add_monitor_filter(int s)
3428 /* rewrite all PASS/FAIL jump offsets */
3429 for (idx = 0; idx < msock_filter.len; idx++) {
3430 struct sock_filter *insn = &msock_filter_insns[idx];
3432 if (BPF_CLASS(insn->code) == BPF_JMP) {
3433 if (insn->code == (BPF_JMP|BPF_JA)) {
3434 if (insn->k == PASS)
3435 insn->k = msock_filter.len - idx - 2;
3436 else if (insn->k == FAIL)
3437 insn->k = msock_filter.len - idx - 3;
3440 if (insn->jt == PASS)
3441 insn->jt = msock_filter.len - idx - 2;
3442 else if (insn->jt == FAIL)
3443 insn->jt = msock_filter.len - idx - 3;
3445 if (insn->jf == PASS)
3446 insn->jf = msock_filter.len - idx - 2;
3447 else if (insn->jf == FAIL)
3448 insn->jf = msock_filter.len - idx - 3;
3452 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3453 &msock_filter, sizeof(msock_filter))) {
3454 perror("SO_ATTACH_FILTER");
3462 static void nl80211_remove_monitor_interface(
3463 struct wpa_driver_nl80211_data *drv)
3465 if (drv->monitor_ifidx >= 0) {
3466 nl80211_remove_iface(drv, drv->monitor_ifidx);
3467 drv->monitor_ifidx = -1;
3469 if (drv->monitor_sock >= 0) {
3470 eloop_unregister_read_sock(drv->monitor_sock);
3471 close(drv->monitor_sock);
3472 drv->monitor_sock = -1;
3478 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3481 struct sockaddr_ll ll;
3485 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3486 buf[IFNAMSIZ - 1] = '\0';
3488 drv->monitor_ifidx =
3489 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3492 if (drv->monitor_ifidx < 0)
3495 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3498 memset(&ll, 0, sizeof(ll));
3499 ll.sll_family = AF_PACKET;
3500 ll.sll_ifindex = drv->monitor_ifidx;
3501 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3502 if (drv->monitor_sock < 0) {
3503 perror("socket[PF_PACKET,SOCK_RAW]");
3507 if (add_monitor_filter(drv->monitor_sock)) {
3508 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3509 "interface; do filtering in user space");
3510 /* This works, but will cost in performance. */
3513 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3514 perror("monitor socket bind");
3518 optlen = sizeof(optval);
3521 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3522 perror("Failed to set socket priority");
3526 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3528 printf("Could not register monitor read socket\n");
3534 nl80211_remove_monitor_interface(drv);
3539 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3541 static int wpa_driver_nl80211_hapd_send_eapol(
3542 void *priv, const u8 *addr, const u8 *data,
3543 size_t data_len, int encrypt, const u8 *own_addr)
3545 struct i802_bss *bss = priv;
3546 struct wpa_driver_nl80211_data *drv = bss->drv;
3547 struct ieee80211_hdr *hdr;
3552 int qos = sta->flags & WPA_STA_WMM;
3557 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3559 hdr = os_zalloc(len);
3561 printf("malloc() failed for i802_send_data(len=%lu)\n",
3562 (unsigned long) len);
3566 hdr->frame_control =
3567 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3568 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3570 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3571 #if 0 /* To be enabled if qos determination is added above */
3573 hdr->frame_control |=
3574 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3578 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3579 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3580 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3581 pos = (u8 *) (hdr + 1);
3583 #if 0 /* To be enabled if qos determination is added above */
3585 /* add an empty QoS header if needed */
3592 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3593 pos += sizeof(rfc1042_header);
3594 WPA_PUT_BE16(pos, ETH_P_PAE);
3596 memcpy(pos, data, data_len);
3598 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3600 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3602 (unsigned long) len, errno, strerror(errno));
3610 static u32 sta_flags_nl80211(int flags)
3614 if (flags & WPA_STA_AUTHORIZED)
3615 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3616 if (flags & WPA_STA_WMM)
3617 f |= BIT(NL80211_STA_FLAG_WME);
3618 if (flags & WPA_STA_SHORT_PREAMBLE)
3619 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3620 if (flags & WPA_STA_MFP)
3621 f |= BIT(NL80211_STA_FLAG_MFP);
3627 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3629 int flags_or, int flags_and)
3631 struct i802_bss *bss = priv;
3632 struct wpa_driver_nl80211_data *drv = bss->drv;
3633 struct nl_msg *msg, *flags = NULL;
3634 struct nl80211_sta_flag_update upd;
3636 msg = nlmsg_alloc();
3640 flags = nlmsg_alloc();
3646 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3647 0, NL80211_CMD_SET_STATION, 0);
3649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3650 if_nametoindex(bss->ifname));
3651 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3654 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3655 * can be removed eventually.
3657 if (total_flags & WPA_STA_AUTHORIZED)
3658 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3660 if (total_flags & WPA_STA_WMM)
3661 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3663 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3664 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3666 if (total_flags & WPA_STA_MFP)
3667 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3669 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3670 goto nla_put_failure;
3672 os_memset(&upd, 0, sizeof(upd));
3673 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3674 upd.set = sta_flags_nl80211(flags_or);
3675 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3679 return send_and_recv_msgs(drv, msg, NULL, NULL);
3686 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3687 struct wpa_driver_associate_params *params)
3689 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3690 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3691 nl80211_remove_monitor_interface(drv);
3695 /* TODO: setup monitor interface (and add code somewhere to remove this
3696 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3702 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3707 msg = nlmsg_alloc();
3711 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3712 NL80211_CMD_LEAVE_IBSS, 0);
3713 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3714 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3717 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3718 "(%s)", ret, strerror(-ret));
3719 goto nla_put_failure;
3723 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3731 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3732 struct wpa_driver_associate_params *params)
3738 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3740 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3741 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3747 msg = nlmsg_alloc();
3751 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3752 NL80211_CMD_JOIN_IBSS, 0);
3753 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3755 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3756 goto nla_put_failure;
3758 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3759 params->ssid, params->ssid_len);
3760 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3762 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3763 drv->ssid_len = params->ssid_len;
3765 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3766 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3768 ret = nl80211_set_conn_keys(params, msg);
3770 goto nla_put_failure;
3772 if (params->wpa_ie) {
3773 wpa_hexdump(MSG_DEBUG,
3774 " * Extra IEs for Beacon/Probe Response frames",
3775 params->wpa_ie, params->wpa_ie_len);
3776 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3780 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3783 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3784 ret, strerror(-ret));
3786 if (ret == -EALREADY && count == 1) {
3787 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3789 nl80211_leave_ibss(drv);
3794 goto nla_put_failure;
3797 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3805 static int wpa_driver_nl80211_connect(
3806 struct wpa_driver_nl80211_data *drv,
3807 struct wpa_driver_associate_params *params)
3810 enum nl80211_auth_type type;
3813 msg = nlmsg_alloc();
3817 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3818 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3819 NL80211_CMD_CONNECT, 0);
3821 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3822 if (params->bssid) {
3823 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3824 MAC2STR(params->bssid));
3825 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3828 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3829 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3832 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3833 params->ssid, params->ssid_len);
3834 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3836 if (params->ssid_len > sizeof(drv->ssid))
3837 goto nla_put_failure;
3838 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3839 drv->ssid_len = params->ssid_len;
3841 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3843 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3846 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3847 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3848 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3849 type = NL80211_AUTHTYPE_SHARED_KEY;
3850 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3851 type = NL80211_AUTHTYPE_NETWORK_EAP;
3852 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3853 type = NL80211_AUTHTYPE_FT;
3855 goto nla_put_failure;
3857 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3858 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3860 if (params->wpa_ie && params->wpa_ie_len) {
3861 enum nl80211_wpa_versions ver;
3863 if (params->wpa_ie[0] == WLAN_EID_RSN)
3864 ver = NL80211_WPA_VERSION_2;
3866 ver = NL80211_WPA_VERSION_1;
3868 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3869 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3872 if (params->pairwise_suite != CIPHER_NONE) {
3875 switch (params->pairwise_suite) {
3877 cipher = WLAN_CIPHER_SUITE_WEP40;
3880 cipher = WLAN_CIPHER_SUITE_WEP104;
3883 cipher = WLAN_CIPHER_SUITE_CCMP;
3887 cipher = WLAN_CIPHER_SUITE_TKIP;
3890 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3893 if (params->group_suite != CIPHER_NONE) {
3896 switch (params->group_suite) {
3898 cipher = WLAN_CIPHER_SUITE_WEP40;
3901 cipher = WLAN_CIPHER_SUITE_WEP104;
3904 cipher = WLAN_CIPHER_SUITE_CCMP;
3908 cipher = WLAN_CIPHER_SUITE_TKIP;
3911 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3914 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3915 params->key_mgmt_suite == KEY_MGMT_PSK) {
3916 int mgmt = WLAN_AKM_SUITE_PSK;
3918 switch (params->key_mgmt_suite) {
3919 case KEY_MGMT_802_1X:
3920 mgmt = WLAN_AKM_SUITE_8021X;
3924 mgmt = WLAN_AKM_SUITE_PSK;
3927 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3930 ret = nl80211_set_conn_keys(params, msg);
3932 goto nla_put_failure;
3934 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3937 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3938 "(%s)", ret, strerror(-ret));
3939 goto nla_put_failure;
3942 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3951 static int wpa_driver_nl80211_associate(
3952 void *priv, struct wpa_driver_associate_params *params)
3954 struct i802_bss *bss = priv;
3955 struct wpa_driver_nl80211_data *drv = bss->drv;
3959 if (params->mode == IEEE80211_MODE_AP)
3960 return wpa_driver_nl80211_ap(drv, params);
3962 if (params->mode == IEEE80211_MODE_IBSS)
3963 return wpa_driver_nl80211_ibss(drv, params);
3965 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3966 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3968 return wpa_driver_nl80211_connect(drv, params);
3971 drv->associated = 0;
3973 msg = nlmsg_alloc();
3977 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3979 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3980 NL80211_CMD_ASSOCIATE, 0);
3982 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3983 if (params->bssid) {
3984 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3985 MAC2STR(params->bssid));
3986 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3989 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3990 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3991 drv->assoc_freq = params->freq;
3993 drv->assoc_freq = 0;
3995 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3996 params->ssid, params->ssid_len);
3997 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3999 if (params->ssid_len > sizeof(drv->ssid))
4000 goto nla_put_failure;
4001 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4002 drv->ssid_len = params->ssid_len;
4004 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4006 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4009 #ifdef CONFIG_IEEE80211W
4010 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4011 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4012 #endif /* CONFIG_IEEE80211W */
4014 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4016 if (params->prev_bssid) {
4017 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4018 MAC2STR(params->prev_bssid));
4019 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4020 params->prev_bssid);
4023 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4026 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4027 "(%s)", ret, strerror(-ret));
4028 nl80211_dump_scan(drv);
4029 goto nla_put_failure;
4032 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4041 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4042 int ifindex, int mode)
4047 msg = nlmsg_alloc();
4051 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4052 0, NL80211_CMD_SET_INTERFACE, 0);
4053 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4054 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4056 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4060 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4061 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4066 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4068 struct i802_bss *bss = priv;
4069 struct wpa_driver_nl80211_data *drv = bss->drv;
4075 nlmode = NL80211_IFTYPE_STATION;
4078 nlmode = NL80211_IFTYPE_ADHOC;
4081 nlmode = NL80211_IFTYPE_AP;
4087 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4088 drv->nlmode = nlmode;
4093 if (nlmode == drv->nlmode) {
4094 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4095 "requested mode - ignore error");
4097 goto done; /* Already in the requested mode */
4100 /* mac80211 doesn't allow mode changes while the device is up, so
4101 * take the device down, try to set the mode again, and bring the
4104 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
4105 /* Try to set the mode again while the interface is down */
4106 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4107 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4112 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4113 "interface is down");
4114 drv->nlmode = nlmode;
4118 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4119 /* Setup additional AP mode functionality if needed */
4120 if (drv->monitor_ifidx < 0 &&
4121 nl80211_create_monitor_interface(drv))
4123 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4124 /* Remove additional AP mode functionality */
4125 nl80211_remove_monitor_interface(drv);
4126 bss->beacon_set = 0;
4130 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4131 "from %d failed", nlmode, drv->nlmode);
4137 static int wpa_driver_nl80211_get_capa(void *priv,
4138 struct wpa_driver_capa *capa)
4140 struct i802_bss *bss = priv;
4141 struct wpa_driver_nl80211_data *drv = bss->drv;
4142 if (!drv->has_capability)
4144 os_memcpy(capa, &drv->capa, sizeof(*capa));
4149 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4151 struct i802_bss *bss = priv;
4152 struct wpa_driver_nl80211_data *drv = bss->drv;
4154 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4155 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4156 drv->operstate = state;
4157 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4158 state ? IF_OPER_UP : IF_OPER_DORMANT);
4162 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4164 struct i802_bss *bss = priv;
4165 struct wpa_driver_nl80211_data *drv = bss->drv;
4167 struct nl80211_sta_flag_update upd;
4169 msg = nlmsg_alloc();
4173 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4174 0, NL80211_CMD_SET_STATION, 0);
4176 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4177 if_nametoindex(bss->ifname));
4178 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4180 os_memset(&upd, 0, sizeof(upd));
4181 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4183 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4184 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4186 return send_and_recv_msgs(drv, msg, NULL, NULL);
4194 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4199 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4201 for (i = 0; i < drv->num_if_indices; i++) {
4202 if (drv->if_indices[i] == 0) {
4203 drv->if_indices[i] = ifidx;
4208 if (drv->if_indices != drv->default_if_indices)
4209 old = drv->if_indices;
4213 drv->if_indices = os_realloc(old,
4214 sizeof(int) * (drv->num_if_indices + 1));
4215 if (!drv->if_indices) {
4217 drv->if_indices = drv->default_if_indices;
4219 drv->if_indices = old;
4220 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4222 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4225 os_memcpy(drv->if_indices, drv->default_if_indices,
4226 sizeof(drv->default_if_indices));
4227 drv->if_indices[drv->num_if_indices] = ifidx;
4228 drv->num_if_indices++;
4232 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4236 for (i = 0; i < drv->num_if_indices; i++) {
4237 if (drv->if_indices[i] == ifidx) {
4238 drv->if_indices[i] = 0;
4245 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4249 for (i = 0; i < drv->num_if_indices; i++)
4250 if (drv->if_indices[i] == ifidx)
4257 static inline int min_int(int a, int b)
4265 static int get_key_handler(struct nl_msg *msg, void *arg)
4267 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4268 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4270 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4271 genlmsg_attrlen(gnlh, 0), NULL);
4274 * TODO: validate the key index and mac address!
4275 * Otherwise, there's a race condition as soon as
4276 * the kernel starts sending key notifications.
4279 if (tb[NL80211_ATTR_KEY_SEQ])
4280 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4281 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4286 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4289 struct i802_bss *bss = priv;
4290 struct wpa_driver_nl80211_data *drv = bss->drv;
4293 msg = nlmsg_alloc();
4297 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4298 0, NL80211_CMD_GET_KEY, 0);
4301 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4302 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4303 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4307 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4313 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4316 struct i802_bss *bss = priv;
4317 struct wpa_driver_nl80211_data *drv = bss->drv;
4319 u8 rates[NL80211_MAX_SUPP_RATES];
4323 msg = nlmsg_alloc();
4327 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4328 NL80211_CMD_SET_BSS, 0);
4330 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4331 rates[rates_len++] = basic_rates[i] / 5;
4333 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4335 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4337 return send_and_recv_msgs(drv, msg, NULL, NULL);
4342 #endif /* HOSTAPD */
4345 /* Set kernel driver on given frequency (MHz) */
4346 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4348 struct i802_bss *bss = priv;
4349 struct wpa_driver_nl80211_data *drv = bss->drv;
4350 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4351 freq->sec_channel_offset);
4357 static int i802_set_rts(void *priv, int rts)
4359 struct i802_bss *bss = priv;
4360 struct wpa_driver_nl80211_data *drv = bss->drv;
4365 msg = nlmsg_alloc();
4374 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4375 0, NL80211_CMD_SET_WIPHY, 0);
4376 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4377 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4379 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4383 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4384 "%d (%s)", rts, ret, strerror(-ret));
4389 static int i802_set_frag(void *priv, int frag)
4391 struct i802_bss *bss = priv;
4392 struct wpa_driver_nl80211_data *drv = bss->drv;
4397 msg = nlmsg_alloc();
4406 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4407 0, NL80211_CMD_SET_WIPHY, 0);
4408 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4409 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4411 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4415 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4416 "%d: %d (%s)", frag, ret, strerror(-ret));
4421 static int i802_flush(void *priv)
4423 struct i802_bss *bss = priv;
4424 struct wpa_driver_nl80211_data *drv = bss->drv;
4427 msg = nlmsg_alloc();
4431 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4432 0, NL80211_CMD_DEL_STATION, 0);
4435 * XXX: FIX! this needs to flush all VLANs too
4437 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4438 if_nametoindex(bss->ifname));
4440 return send_and_recv_msgs(drv, msg, NULL, NULL);
4446 static int get_sta_handler(struct nl_msg *msg, void *arg)
4448 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4449 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4450 struct hostap_sta_driver_data *data = arg;
4451 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4452 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4453 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4454 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4455 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4456 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4457 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4460 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4461 genlmsg_attrlen(gnlh, 0), NULL);
4464 * TODO: validate the interface and mac address!
4465 * Otherwise, there's a race condition as soon as
4466 * the kernel starts sending station notifications.
4469 if (!tb[NL80211_ATTR_STA_INFO]) {
4470 wpa_printf(MSG_DEBUG, "sta stats missing!");
4473 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4474 tb[NL80211_ATTR_STA_INFO],
4476 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4480 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4481 data->inactive_msec =
4482 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4483 if (stats[NL80211_STA_INFO_RX_BYTES])
4484 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4485 if (stats[NL80211_STA_INFO_TX_BYTES])
4486 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4487 if (stats[NL80211_STA_INFO_RX_PACKETS])
4489 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4490 if (stats[NL80211_STA_INFO_TX_PACKETS])
4492 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4497 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4500 struct i802_bss *bss = priv;
4501 struct wpa_driver_nl80211_data *drv = bss->drv;
4504 os_memset(data, 0, sizeof(*data));
4505 msg = nlmsg_alloc();
4509 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4510 0, NL80211_CMD_GET_STATION, 0);
4512 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4513 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4515 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4521 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4522 int cw_min, int cw_max, int burst_time)
4524 struct i802_bss *bss = priv;
4525 struct wpa_driver_nl80211_data *drv = bss->drv;
4527 struct nlattr *txq, *params;
4529 msg = nlmsg_alloc();
4533 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4534 0, NL80211_CMD_SET_WIPHY, 0);
4536 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4538 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4540 goto nla_put_failure;
4542 /* We are only sending parameters for a single TXQ at a time */
4543 params = nla_nest_start(msg, 1);
4545 goto nla_put_failure;
4547 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4548 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4549 * 32 usec, so need to convert the value here. */
4550 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4551 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4552 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4553 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4555 nla_nest_end(msg, params);
4557 nla_nest_end(msg, txq);
4559 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4566 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4568 struct i802_bss *bss = priv;
4569 struct wpa_driver_nl80211_data *drv = bss->drv;
4572 msg = nlmsg_alloc();
4576 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4577 NL80211_CMD_SET_BSS, 0);
4580 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4582 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4584 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4588 return send_and_recv_msgs(drv, msg, NULL, NULL);
4594 static int i802_set_cts_protect(void *priv, int value)
4596 return i802_set_bss(priv, value, -1, -1);
4600 static int i802_set_preamble(void *priv, int value)
4602 return i802_set_bss(priv, -1, value, -1);
4606 static int i802_set_short_slot_time(void *priv, int value)
4608 return i802_set_bss(priv, -1, -1, value);
4612 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4613 const char *ifname, int vlan_id)
4615 struct i802_bss *bss = priv;
4616 struct wpa_driver_nl80211_data *drv = bss->drv;
4620 msg = nlmsg_alloc();
4624 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4625 0, NL80211_CMD_SET_STATION, 0);
4627 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4628 if_nametoindex(bss->ifname));
4629 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4630 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4631 if_nametoindex(ifname));
4633 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4635 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4636 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4637 MAC2STR(addr), ifname, vlan_id, ret,
4645 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4647 struct i802_bss *bss = priv;
4648 struct wpa_driver_nl80211_data *drv = bss->drv;
4649 char name[IFNAMSIZ + 1];
4651 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4652 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4653 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4655 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4658 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4659 return i802_set_sta_vlan(priv, addr, name, 0);
4661 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4662 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4668 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4670 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4671 struct sockaddr_ll lladdr;
4672 unsigned char buf[3000];
4674 socklen_t fromlen = sizeof(lladdr);
4676 len = recvfrom(sock, buf, sizeof(buf), 0,
4677 (struct sockaddr *)&lladdr, &fromlen);
4683 if (have_ifidx(drv, lladdr.sll_ifindex))
4684 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4688 static int i802_get_inact_sec(void *priv, const u8 *addr)
4690 struct hostap_sta_driver_data data;
4693 data.inactive_msec = (unsigned long) -1;
4694 ret = i802_read_sta_data(priv, &data, addr);
4695 if (ret || data.inactive_msec == (unsigned long) -1)
4697 return data.inactive_msec / 1000;
4701 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4710 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4713 struct i802_bss *bss = priv;
4714 struct ieee80211_mgmt mgmt;
4716 memset(&mgmt, 0, sizeof(mgmt));
4717 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4718 WLAN_FC_STYPE_DEAUTH);
4719 memcpy(mgmt.da, addr, ETH_ALEN);
4720 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4721 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4722 mgmt.u.deauth.reason_code = host_to_le16(reason);
4723 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4725 sizeof(mgmt.u.deauth));
4729 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4732 struct i802_bss *bss = priv;
4733 struct ieee80211_mgmt mgmt;
4735 memset(&mgmt, 0, sizeof(mgmt));
4736 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4737 WLAN_FC_STYPE_DISASSOC);
4738 memcpy(mgmt.da, addr, ETH_ALEN);
4739 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4740 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4741 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4742 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4744 sizeof(mgmt.u.disassoc));
4748 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4749 const char *brname, const char *ifname)
4752 char in_br[IFNAMSIZ];
4754 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4755 ifindex = if_nametoindex(brname);
4758 * Bridge was configured, but the bridge device does
4759 * not exist. Try to add it now.
4761 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4762 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4763 "bridge interface %s: %s",
4764 brname, strerror(errno));
4767 drv->added_bridge = 1;
4768 add_ifidx(drv, if_nametoindex(brname));
4771 if (linux_br_get(in_br, ifname) == 0) {
4772 if (os_strcmp(in_br, brname) == 0)
4773 return 0; /* already in the bridge */
4775 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4776 "bridge %s", ifname, in_br);
4777 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4778 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4779 "remove interface %s from bridge "
4781 ifname, brname, strerror(errno));
4786 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4788 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4789 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4790 "into bridge %s: %s",
4791 ifname, brname, strerror(errno));
4794 drv->added_if_into_bridge = 1;
4800 static void *i802_init(struct hostapd_data *hapd,
4801 struct wpa_init_params *params)
4803 struct wpa_driver_nl80211_data *drv;
4804 struct i802_bss *bss;
4806 char brname[IFNAMSIZ];
4807 int ifindex, br_ifindex;
4810 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4815 if (linux_br_get(brname, params->ifname) == 0) {
4816 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4817 params->ifname, brname);
4818 br_ifindex = if_nametoindex(brname);
4824 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4825 drv->if_indices = drv->default_if_indices;
4826 for (i = 0; i < params->num_bridge; i++) {
4827 if (params->bridge[i]) {
4828 ifindex = if_nametoindex(params->bridge[i]);
4830 add_ifidx(drv, ifindex);
4831 if (ifindex == br_ifindex)
4835 if (!br_added && br_ifindex &&
4836 (params->num_bridge == 0 || !params->bridge[0]))
4837 add_ifidx(drv, br_ifindex);
4839 /* start listening for EAPOL on the default AP interface */
4840 add_ifidx(drv, drv->ifindex);
4842 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4845 if (params->bssid) {
4846 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4851 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4852 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4853 "into AP mode", bss->ifname);
4857 if (params->num_bridge && params->bridge[0] &&
4858 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4861 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4864 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4865 if (drv->eapol_sock < 0) {
4866 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4870 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4872 printf("Could not register read socket for eapol\n");
4876 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4882 nl80211_remove_monitor_interface(drv);
4883 if (drv->ioctl_sock >= 0)
4884 close(drv->ioctl_sock);
4886 genl_family_put(drv->nl80211);
4887 nl_cache_free(drv->nl_cache);
4888 nl_handle_destroy(drv->nl_handle);
4889 nl_cb_put(drv->nl_cb);
4896 static void i802_deinit(void *priv)
4898 wpa_driver_nl80211_deinit(priv);
4901 #endif /* HOSTAPD */
4904 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4905 enum wpa_driver_if_type type)
4908 case WPA_IF_STATION:
4909 return NL80211_IFTYPE_STATION;
4910 case WPA_IF_AP_VLAN:
4911 return NL80211_IFTYPE_AP_VLAN;
4913 return NL80211_IFTYPE_AP;
4919 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4920 const char *ifname, const u8 *addr,
4921 void *bss_ctx, void **drv_priv,
4922 char *force_ifname, u8 *if_addr)
4924 struct i802_bss *bss = priv;
4925 struct wpa_driver_nl80211_data *drv = bss->drv;
4928 struct i802_bss *new_bss = NULL;
4930 if (type == WPA_IF_AP_BSS) {
4931 new_bss = os_zalloc(sizeof(*new_bss));
4932 if (new_bss == NULL)
4935 #endif /* HOSTAPD */
4938 os_memcpy(if_addr, addr, ETH_ALEN);
4939 ifidx = nl80211_create_iface(drv, ifname,
4940 wpa_driver_nl80211_if_type(type), addr,
4945 #endif /* HOSTAPD */
4950 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
4954 if (type == WPA_IF_AP_BSS) {
4955 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4956 nl80211_remove_iface(drv, ifidx);
4960 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4961 new_bss->ifindex = ifidx;
4963 new_bss->next = drv->first_bss.next;
4964 drv->first_bss.next = new_bss;
4966 *drv_priv = new_bss;
4968 #endif /* HOSTAPD */
4974 static int wpa_driver_nl80211_if_remove(void *priv,
4975 enum wpa_driver_if_type type,
4978 struct i802_bss *bss = priv;
4979 struct wpa_driver_nl80211_data *drv = bss->drv;
4980 int ifindex = if_nametoindex(ifname);
4982 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4983 __func__, type, ifname, ifindex);
4986 nl80211_remove_iface(drv, ifindex);
4989 if (type != WPA_IF_AP_BSS)
4992 if (bss != &drv->first_bss) {
4993 struct i802_bss *tbss = &drv->first_bss;
4996 if (tbss->next != bss)
4999 tbss->next = bss->next;
5004 #endif /* HOSTAPD */
5010 static int cookie_handler(struct nl_msg *msg, void *arg)
5012 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5013 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5015 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5016 genlmsg_attrlen(gnlh, 0), NULL);
5017 if (tb[NL80211_ATTR_COOKIE])
5018 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5023 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5024 const u8 *dst, const u8 *src,
5026 const u8 *data, size_t data_len)
5028 struct i802_bss *bss = priv;
5029 struct wpa_driver_nl80211_data *drv = bss->drv;
5033 struct ieee80211_hdr *hdr;
5036 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5039 buf = os_zalloc(24 + data_len);
5042 os_memcpy(buf + 24, data, data_len);
5043 hdr = (struct ieee80211_hdr *) buf;
5044 hdr->frame_control =
5045 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5046 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5047 os_memcpy(hdr->addr2, src, ETH_ALEN);
5048 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5050 if (drv->nlmode == NL80211_IFTYPE_AP) {
5051 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5056 msg = nlmsg_alloc();
5062 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5063 NL80211_CMD_ACTION, 0);
5065 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5066 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5067 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
5072 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5075 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
5076 "(%s)", ret, strerror(-ret));
5077 goto nla_put_failure;
5079 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
5080 "cookie 0x%llx", (long long unsigned int) cookie);
5081 drv->send_action_cookie = cookie;
5082 drv->pending_send_action = 1;
5092 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5093 unsigned int duration)
5095 struct i802_bss *bss = priv;
5096 struct wpa_driver_nl80211_data *drv = bss->drv;
5101 msg = nlmsg_alloc();
5105 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5106 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5108 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5109 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5110 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5113 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5115 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5116 "0x%llx for freq=%u MHz duration=%u",
5117 (long long unsigned int) cookie, freq, duration);
5118 drv->remain_on_chan_cookie = cookie;
5121 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5122 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
5128 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5130 struct i802_bss *bss = priv;
5131 struct wpa_driver_nl80211_data *drv = bss->drv;
5135 if (!drv->pending_remain_on_chan) {
5136 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5141 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5143 (long long unsigned int) drv->remain_on_chan_cookie);
5145 msg = nlmsg_alloc();
5149 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5150 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5152 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5153 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5155 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5158 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5159 "%d (%s)", ret, strerror(-ret));
5165 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5168 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5169 if (drv->monitor_ifidx < 0)
5170 return; /* monitor interface already removed */
5172 if (drv->nlmode != NL80211_IFTYPE_STATION)
5173 return; /* not in station mode anymore */
5175 if (drv->probe_req_report)
5176 return; /* reporting enabled */
5178 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5179 "Probe Request reporting needed anymore");
5180 nl80211_remove_monitor_interface(drv);
5184 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5186 struct i802_bss *bss = priv;
5187 struct wpa_driver_nl80211_data *drv = bss->drv;
5189 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5190 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5191 "allowed in station mode (iftype=%d)",
5195 drv->probe_req_report = report;
5198 eloop_cancel_timeout(
5199 wpa_driver_nl80211_probe_req_report_timeout,
5201 if (drv->monitor_ifidx < 0 &&
5202 nl80211_create_monitor_interface(drv))
5206 * It takes a while to remove the monitor interface, so try to
5207 * avoid doing this if it is needed again shortly. Instead,
5208 * schedule the interface to be removed later if no need for it
5211 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5212 "to be removed after 10 seconds of no use");
5213 eloop_register_timeout(
5214 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5222 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5223 int ifindex, int disabled)
5226 struct nlattr *bands, *band;
5229 msg = nlmsg_alloc();
5233 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5234 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5235 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5237 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5239 goto nla_put_failure;
5242 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5243 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5244 * rates. All 5 GHz rates are left enabled.
5246 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5248 goto nla_put_failure;
5249 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5250 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5251 nla_nest_end(msg, band);
5253 nla_nest_end(msg, bands);
5255 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5258 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5259 "(%s)", ret, strerror(-ret));
5270 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5272 struct i802_bss *bss = priv;
5273 struct wpa_driver_nl80211_data *drv = bss->drv;
5274 drv->disable_11b_rates = disabled;
5275 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5279 static int wpa_driver_nl80211_deinit_ap(void *priv)
5281 struct i802_bss *bss = priv;
5282 struct wpa_driver_nl80211_data *drv = bss->drv;
5283 if (drv->nlmode != NL80211_IFTYPE_AP)
5285 wpa_driver_nl80211_del_beacon(drv);
5286 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5290 static void wpa_driver_nl80211_resume(void *priv)
5292 struct i802_bss *bss = priv;
5293 struct wpa_driver_nl80211_data *drv = bss->drv;
5294 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5295 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5301 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5302 const u8 *ies, size_t ies_len)
5304 struct i802_bss *bss = priv;
5305 struct wpa_driver_nl80211_data *drv = bss->drv;
5309 u8 own_addr[ETH_ALEN];
5311 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5315 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5316 "action %d", action);
5321 * Action frame payload:
5322 * Category[1] = 6 (Fast BSS Transition)
5323 * Action[1] = 1 (Fast BSS Transition Request)
5329 data_len = 2 + 2 * ETH_ALEN + ies_len;
5330 data = os_malloc(data_len);
5334 *pos++ = 0x06; /* FT Action category */
5336 os_memcpy(pos, own_addr, ETH_ALEN);
5338 os_memcpy(pos, target_ap, ETH_ALEN);
5340 os_memcpy(pos, ies, ies_len);
5342 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5343 own_addr, drv->bssid,
5351 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5353 struct i802_bss *bss = priv;
5354 struct wpa_driver_nl80211_data *drv = bss->drv;
5355 struct nl_msg *msg, *cqm = NULL;
5357 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5358 "hysteresis=%d", threshold, hysteresis);
5360 msg = nlmsg_alloc();
5364 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5365 0, NL80211_CMD_SET_CQM, 0);
5367 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5369 cqm = nlmsg_alloc();
5373 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5374 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5375 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5377 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5389 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5392 struct i802_bss *bss = priv;
5393 struct wpa_driver_nl80211_data *drv = bss->drv;
5394 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5398 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5400 .desc = "Linux nl80211/cfg80211",
5401 .get_bssid = wpa_driver_nl80211_get_bssid,
5402 .get_ssid = wpa_driver_nl80211_get_ssid,
5403 .set_key = wpa_driver_nl80211_set_key,
5404 .scan2 = wpa_driver_nl80211_scan,
5405 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5406 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5407 .disassociate = wpa_driver_nl80211_disassociate,
5408 .authenticate = wpa_driver_nl80211_authenticate,
5409 .associate = wpa_driver_nl80211_associate,
5410 .init = wpa_driver_nl80211_init,
5411 .deinit = wpa_driver_nl80211_deinit,
5412 .get_capa = wpa_driver_nl80211_get_capa,
5413 .set_operstate = wpa_driver_nl80211_set_operstate,
5414 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5415 .set_country = wpa_driver_nl80211_set_country,
5416 .set_beacon = wpa_driver_nl80211_set_beacon,
5417 .if_add = wpa_driver_nl80211_if_add,
5418 .if_remove = wpa_driver_nl80211_if_remove,
5419 .send_mlme = wpa_driver_nl80211_send_mlme,
5420 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5421 .sta_add = wpa_driver_nl80211_sta_add,
5422 .sta_remove = wpa_driver_nl80211_sta_remove,
5423 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5424 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5426 .hapd_init = i802_init,
5427 .hapd_deinit = i802_deinit,
5428 .get_seqnum = i802_get_seqnum,
5429 .flush = i802_flush,
5430 .read_sta_data = i802_read_sta_data,
5431 .sta_deauth = i802_sta_deauth,
5432 .sta_disassoc = i802_sta_disassoc,
5433 .get_inact_sec = i802_get_inact_sec,
5434 .sta_clear_stats = i802_sta_clear_stats,
5435 .set_rts = i802_set_rts,
5436 .set_frag = i802_set_frag,
5437 .set_rate_sets = i802_set_rate_sets,
5438 .set_cts_protect = i802_set_cts_protect,
5439 .set_preamble = i802_set_preamble,
5440 .set_short_slot_time = i802_set_short_slot_time,
5441 .set_tx_queue_params = i802_set_tx_queue_params,
5442 .set_sta_vlan = i802_set_sta_vlan,
5443 .set_wds_sta = i802_set_wds_sta,
5444 #endif /* HOSTAPD */
5445 .set_freq = i802_set_freq,
5446 .send_action = wpa_driver_nl80211_send_action,
5447 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5448 .cancel_remain_on_channel =
5449 wpa_driver_nl80211_cancel_remain_on_channel,
5450 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5451 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5452 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5453 .resume = wpa_driver_nl80211_resume,
5454 .send_ft_action = nl80211_send_ft_action,
5455 .signal_monitor = nl80211_signal_monitor,
5456 .send_frame = nl80211_send_frame,