2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009, Atheros Communications
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * Alternatively, this software may be distributed under the terms of BSD
16 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
21 #include <net/if_arp.h>
23 #include <netlink/genl/genl.h>
24 #include <netlink/genl/family.h>
25 #include <netlink/genl/ctrl.h>
26 #include <netpacket/packet.h>
27 #include <linux/filter.h>
28 #include "nl80211_copy.h"
32 #include "common/ieee802_11_defs.h"
35 #include "radiotap_iter.h"
39 /* libnl 2.0 compatibility code */
40 #define nl_handle nl_sock
41 #define nl_handle_alloc_cb nl_socket_alloc_cb
42 #define nl_handle_destroy nl_socket_free
43 #endif /* CONFIG_LIBNL20 */
47 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
50 #define IFF_DORMANT 0x20000 /* driver signals dormant */
53 #ifndef IF_OPER_DORMANT
54 #define IF_OPER_DORMANT 5
61 struct i802_bss *next;
63 unsigned int beacon_set:1;
66 struct wpa_driver_nl80211_data {
68 struct netlink_data *netlink;
69 int ioctl_sock; /* socket for ioctl() use */
70 char ifname[IFNAMSIZ + 1];
73 struct wpa_driver_capa capa;
78 int scan_complete_events;
80 struct nl_handle *nl_handle;
81 struct nl_handle *nl_handle_event;
82 struct nl_cache *nl_cache;
83 struct nl_cache *nl_cache_event;
85 struct genl_family *nl80211;
87 u8 auth_bssid[ETH_ALEN];
93 int ap_scan_as_station;
98 unsigned int beacon_set:1;
101 int eapol_sock; /* socket for EAPOL frames */
103 int default_if_indices[16];
115 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
117 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
119 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
120 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
121 const u8 *addr, int cmd, u16 reason_code);
122 static void nl80211_remove_monitor_interface(
123 struct wpa_driver_nl80211_data *drv);
126 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
127 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
128 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
130 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
135 static int ack_handler(struct nl_msg *msg, void *arg)
142 static int finish_handler(struct nl_msg *msg, void *arg)
149 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
158 static int no_seq_check(struct nl_msg *msg, void *arg)
164 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
166 int (*valid_handler)(struct nl_msg *, void *),
172 cb = nl_cb_clone(drv->nl_cb);
176 err = nl_send_auto_complete(drv->nl_handle, msg);
182 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
183 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
184 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
187 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
188 valid_handler, valid_data);
191 nl_recvmsgs(drv->nl_handle, cb);
205 static int family_handler(struct nl_msg *msg, void *arg)
207 struct family_data *res = arg;
208 struct nlattr *tb[CTRL_ATTR_MAX + 1];
209 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
210 struct nlattr *mcgrp;
213 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
214 genlmsg_attrlen(gnlh, 0), NULL);
215 if (!tb[CTRL_ATTR_MCAST_GROUPS])
218 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
219 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
220 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
221 nla_len(mcgrp), NULL);
222 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
223 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
224 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
226 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
228 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
236 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
237 const char *family, const char *group)
241 struct family_data res = { group, -ENOENT };
246 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
247 0, 0, CTRL_CMD_GETFAMILY, 0);
248 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
250 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
262 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
263 const char *ifname, u8 *addr)
267 os_memset(&ifr, 0, sizeof(ifr));
268 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
269 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
270 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
271 ifname, errno, strerror(errno));
275 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
276 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
277 ifname, ifr.ifr_hwaddr.sa_family);
280 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
286 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
287 const char *ifname, const u8 *addr)
291 os_memset(&ifr, 0, sizeof(ifr));
292 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
293 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
294 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
296 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
297 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
298 ifname, errno, strerror(errno));
307 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
309 struct wpa_driver_nl80211_data *drv = priv;
310 if (!drv->associated)
312 os_memcpy(bssid, drv->bssid, ETH_ALEN);
317 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
319 struct wpa_driver_nl80211_data *drv = priv;
320 if (!drv->associated)
322 os_memcpy(ssid, drv->ssid, drv->ssid_len);
323 return drv->ssid_len;
327 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
328 char *buf, size_t len, int del)
330 union wpa_event_data event;
332 os_memset(&event, 0, sizeof(event));
333 if (len > sizeof(event.interface_status.ifname))
334 len = sizeof(event.interface_status.ifname) - 1;
335 os_memcpy(event.interface_status.ifname, buf, len);
336 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
337 EVENT_INTERFACE_ADDED;
339 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
341 event.interface_status.ifname,
342 del ? "removed" : "added");
344 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
351 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
355 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
358 struct ifinfomsg *ifi;
359 int attrlen, _nlmsg_len, rta_len;
364 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
366 attrlen = NLMSG_PAYLOAD(h, sizeof(struct ifinfomsg));
370 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
372 rta_len = RTA_ALIGN(sizeof(struct rtattr));
373 while (RTA_OK(attr, attrlen)) {
374 if (attr->rta_type == IFLA_IFNAME) {
375 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
381 attr = RTA_NEXT(attr, attrlen);
388 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
389 int ifindex, struct nlmsghdr *h)
391 if (drv->ifindex == ifindex)
394 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
395 drv->ifindex = if_nametoindex(drv->ifname);
396 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
398 wpa_driver_nl80211_finish_drv_init(drv);
406 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, struct nlmsghdr *h,
409 struct wpa_driver_nl80211_data *drv = ctx;
410 struct ifinfomsg *ifi;
411 int attrlen, _nlmsg_len, rta_len;
412 struct rtattr * attr;
414 if (len < sizeof(*ifi))
419 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
420 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
425 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
427 drv->operstate, ifi->ifi_flags,
428 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
429 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
430 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
431 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
433 * Some drivers send the association event before the operup event--in
434 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
435 * fails. This will hit us when wpa_supplicant does not need to do
436 * IEEE 802.1X authentication
438 if (drv->operstate == 1 &&
439 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
440 !(ifi->ifi_flags & IFF_RUNNING))
441 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
444 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
446 attrlen = NLMSG_PAYLOAD(h, sizeof(struct ifinfomsg));
450 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
452 rta_len = RTA_ALIGN(sizeof(struct rtattr));
453 while (RTA_OK(attr, attrlen)) {
454 if (attr->rta_type == IFLA_IFNAME) {
455 wpa_driver_nl80211_event_link(
457 ((char *) attr) + rta_len,
458 attr->rta_len - rta_len, 0);
460 attr = RTA_NEXT(attr, attrlen);
465 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, struct nlmsghdr *h,
468 struct wpa_driver_nl80211_data *drv = ctx;
469 struct ifinfomsg *ifi;
470 int attrlen, _nlmsg_len, rta_len;
471 struct rtattr * attr;
473 if (len < sizeof(*ifi))
478 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
480 attrlen = NLMSG_PAYLOAD(h, sizeof(struct ifinfomsg));
484 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
486 rta_len = RTA_ALIGN(sizeof(struct rtattr));
487 while (RTA_OK(attr, attrlen)) {
488 if (attr->rta_type == IFLA_IFNAME) {
489 wpa_driver_nl80211_event_link(
491 ((char *) attr) + rta_len,
492 attr->rta_len - rta_len, 1);
494 attr = RTA_NEXT(attr, attrlen);
499 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
500 const u8 *frame, size_t len)
502 const struct ieee80211_mgmt *mgmt;
503 union wpa_event_data event;
505 mgmt = (const struct ieee80211_mgmt *) frame;
506 if (len < 24 + sizeof(mgmt->u.auth)) {
507 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
512 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
513 os_memset(&event, 0, sizeof(event));
514 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
515 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
516 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
517 if (len > 24 + sizeof(mgmt->u.auth)) {
518 event.auth.ies = mgmt->u.auth.variable;
519 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
522 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
526 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
527 const u8 *frame, size_t len)
529 const struct ieee80211_mgmt *mgmt;
530 union wpa_event_data event;
533 mgmt = (const struct ieee80211_mgmt *) frame;
534 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
535 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
540 status = le_to_host16(mgmt->u.assoc_resp.status_code);
541 if (status != WLAN_STATUS_SUCCESS) {
542 os_memset(&event, 0, sizeof(event));
543 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
544 event.assoc_reject.resp_ies =
545 (u8 *) mgmt->u.assoc_resp.variable;
546 event.assoc_reject.resp_ies_len =
547 len - 24 - sizeof(mgmt->u.assoc_resp);
549 event.assoc_reject.status_code = status;
551 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
556 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
558 os_memset(&event, 0, sizeof(event));
559 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
560 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
561 event.assoc_info.resp_ies_len =
562 len - 24 - sizeof(mgmt->u.assoc_resp);
565 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
569 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
570 enum nl80211_commands cmd, struct nlattr *status,
571 struct nlattr *addr, struct nlattr *req_ie,
572 struct nlattr *resp_ie)
574 union wpa_event_data event;
576 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
578 * Avoid reporting two association events that would confuse
581 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
582 "when using userspace SME", cmd);
586 os_memset(&event, 0, sizeof(event));
587 if (cmd == NL80211_CMD_CONNECT &&
588 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
590 event.assoc_reject.resp_ies = nla_data(resp_ie);
591 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
593 event.assoc_reject.status_code = nla_get_u16(status);
594 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
600 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
603 event.assoc_info.req_ies = nla_data(req_ie);
604 event.assoc_info.req_ies_len = nla_len(req_ie);
607 event.assoc_info.resp_ies = nla_data(resp_ie);
608 event.assoc_info.resp_ies_len = nla_len(resp_ie);
611 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
615 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
616 enum nl80211_commands cmd, struct nlattr *addr)
618 union wpa_event_data event;
619 enum wpa_event_type ev;
621 if (nla_len(addr) != ETH_ALEN)
624 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
625 cmd, MAC2STR((u8 *) nla_data(addr)));
627 if (cmd == NL80211_CMD_AUTHENTICATE)
628 ev = EVENT_AUTH_TIMED_OUT;
629 else if (cmd == NL80211_CMD_ASSOCIATE)
630 ev = EVENT_ASSOC_TIMED_OUT;
634 os_memset(&event, 0, sizeof(event));
635 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
636 wpa_supplicant_event(drv->ctx, ev, &event);
640 static void mlme_event(struct wpa_driver_nl80211_data *drv,
641 enum nl80211_commands cmd, struct nlattr *frame,
642 struct nlattr *addr, struct nlattr *timed_out)
644 if (timed_out && addr) {
645 mlme_timeout_event(drv, cmd, addr);
650 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
655 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
656 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
657 nla_data(frame), nla_len(frame));
660 case NL80211_CMD_AUTHENTICATE:
661 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
663 case NL80211_CMD_ASSOCIATE:
664 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
666 case NL80211_CMD_DEAUTHENTICATE:
668 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
670 case NL80211_CMD_DISASSOCIATE:
672 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
680 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
683 union wpa_event_data data;
685 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
686 os_memset(&data, 0, sizeof(data));
687 if (tb[NL80211_ATTR_MAC]) {
688 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
689 nla_data(tb[NL80211_ATTR_MAC]),
690 nla_len(tb[NL80211_ATTR_MAC]));
691 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
693 if (tb[NL80211_ATTR_KEY_SEQ]) {
694 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
695 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
696 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
698 if (tb[NL80211_ATTR_KEY_TYPE]) {
699 enum nl80211_key_type key_type =
700 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
701 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
702 if (key_type == NL80211_KEYTYPE_PAIRWISE)
703 data.michael_mic_failure.unicast = 1;
705 data.michael_mic_failure.unicast = 1;
707 if (tb[NL80211_ATTR_KEY_IDX]) {
708 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
709 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
712 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
716 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
719 if (tb[NL80211_ATTR_MAC] == NULL) {
720 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
724 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
726 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
727 MAC2STR(drv->bssid));
729 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
733 static int process_event(struct nl_msg *msg, void *arg)
735 struct wpa_driver_nl80211_data *drv = arg;
736 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
737 struct nlattr *tb[NL80211_ATTR_MAX + 1];
739 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
740 genlmsg_attrlen(gnlh, 0), NULL);
742 if (tb[NL80211_ATTR_IFINDEX]) {
743 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
744 if (ifindex != drv->ifindex) {
745 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
746 " for foreign interface (ifindex %d)",
752 if (drv->ap_scan_as_station &&
753 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
754 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
755 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
756 drv->ap_scan_as_station = 0;
760 case NL80211_CMD_TRIGGER_SCAN:
761 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
763 case NL80211_CMD_NEW_SCAN_RESULTS:
764 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
765 drv->scan_complete_events = 1;
766 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
768 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
770 case NL80211_CMD_SCAN_ABORTED:
771 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
773 * Need to indicate that scan results are available in order
774 * not to make wpa_supplicant stop its scanning.
776 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
778 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
780 case NL80211_CMD_AUTHENTICATE:
781 case NL80211_CMD_ASSOCIATE:
782 case NL80211_CMD_DEAUTHENTICATE:
783 case NL80211_CMD_DISASSOCIATE:
784 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
785 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
787 case NL80211_CMD_CONNECT:
788 case NL80211_CMD_ROAM:
789 mlme_event_connect(drv, gnlh->cmd,
790 tb[NL80211_ATTR_STATUS_CODE],
791 tb[NL80211_ATTR_MAC],
792 tb[NL80211_ATTR_REQ_IE],
793 tb[NL80211_ATTR_RESP_IE]);
795 case NL80211_CMD_DISCONNECT:
796 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
798 * Avoid reporting two disassociation events that could
799 * confuse the core code.
801 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
802 "event when using userspace SME");
806 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
808 case NL80211_CMD_MICHAEL_MIC_FAILURE:
809 mlme_event_michael_mic_failure(drv, tb);
811 case NL80211_CMD_JOIN_IBSS:
812 mlme_event_join_ibss(drv, tb);
815 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
816 "(cmd=%d)", gnlh->cmd);
824 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
828 struct wpa_driver_nl80211_data *drv = eloop_ctx;
830 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
832 cb = nl_cb_clone(drv->nl_cb);
835 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
836 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
837 nl_recvmsgs(drv->nl_handle_event, cb);
842 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
843 const char *ifname, int dev_up)
847 if (drv->ioctl_sock < 0)
850 os_memset(&ifr, 0, sizeof(ifr));
851 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
853 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
854 perror("ioctl[SIOCGIFFLAGS]");
855 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
861 if (ifr.ifr_flags & IFF_UP)
863 ifr.ifr_flags |= IFF_UP;
865 if (!(ifr.ifr_flags & IFF_UP))
867 ifr.ifr_flags &= ~IFF_UP;
870 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
871 perror("ioctl[SIOCSIFFLAGS]");
880 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
881 * @priv: driver_nl80211 private data
882 * @alpha2_arg: country to which to switch to
883 * Returns: 0 on success, -1 on failure
885 * This asks nl80211 to set the regulatory domain for given
886 * country ISO / IEC alpha2.
888 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
890 struct wpa_driver_nl80211_data *drv = priv;
898 alpha2[0] = alpha2_arg[0];
899 alpha2[1] = alpha2_arg[1];
902 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
903 0, NL80211_CMD_REQ_SET_REG, 0);
905 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
906 if (send_and_recv_msgs(drv, msg, NULL, NULL))
915 struct wiphy_info_data {
919 int connect_supported;
923 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
925 struct nlattr *tb[NL80211_ATTR_MAX + 1];
926 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
927 struct wiphy_info_data *info = arg;
929 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
930 genlmsg_attrlen(gnlh, 0), NULL);
932 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
933 info->max_scan_ssids =
934 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
936 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
937 struct nlattr *nl_mode;
939 nla_for_each_nested(nl_mode,
940 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
941 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
942 info->ap_supported = 1;
948 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
949 struct nlattr *nl_cmd;
952 nla_for_each_nested(nl_cmd,
953 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
954 u32 cmd = nla_get_u32(nl_cmd);
955 if (cmd == NL80211_CMD_AUTHENTICATE)
956 info->auth_supported = 1;
957 else if (cmd == NL80211_CMD_CONNECT)
958 info->connect_supported = 1;
966 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
967 struct wiphy_info_data *info)
971 os_memset(info, 0, sizeof(*info));
976 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
977 0, NL80211_CMD_GET_WIPHY, 0);
979 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
981 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
990 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
992 struct wiphy_info_data info;
993 if (wpa_driver_nl80211_get_info(drv, &info))
995 drv->has_capability = 1;
996 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
997 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
998 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
999 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1000 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1001 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1002 WPA_DRIVER_CAPA_ENC_WEP104 |
1003 WPA_DRIVER_CAPA_ENC_TKIP |
1004 WPA_DRIVER_CAPA_ENC_CCMP;
1006 drv->capa.max_scan_ssids = info.max_scan_ssids;
1007 if (info.ap_supported)
1008 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1010 if (info.auth_supported)
1011 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1012 else if (!info.connect_supported) {
1013 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1014 "authentication/association or connect commands");
1018 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1022 #endif /* HOSTAPD */
1025 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1030 /* Initialize generic netlink and nl80211 */
1032 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1033 if (drv->nl_cb == NULL) {
1034 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1039 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1040 if (drv->nl_handle == NULL) {
1041 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1046 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1047 if (drv->nl_handle_event == NULL) {
1048 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1049 "callbacks (event)");
1053 if (genl_connect(drv->nl_handle)) {
1054 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1059 if (genl_connect(drv->nl_handle_event)) {
1060 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1065 #ifdef CONFIG_LIBNL20
1066 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1067 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1071 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1073 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1074 "netlink cache (event)");
1077 #else /* CONFIG_LIBNL20 */
1078 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1079 if (drv->nl_cache == NULL) {
1080 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1084 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1085 if (drv->nl_cache_event == NULL) {
1086 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1087 "netlink cache (event)");
1090 #endif /* CONFIG_LIBNL20 */
1092 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1093 if (drv->nl80211 == NULL) {
1094 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1099 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1101 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1103 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1104 "membership for scan events: %d (%s)",
1105 ret, strerror(-ret));
1109 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1111 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1113 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1114 "membership for mlme events: %d (%s)",
1115 ret, strerror(-ret));
1119 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1120 wpa_driver_nl80211_event_receive, drv, ctx);
1125 nl_cache_free(drv->nl_cache_event);
1127 nl_cache_free(drv->nl_cache);
1129 nl_handle_destroy(drv->nl_handle_event);
1131 nl_handle_destroy(drv->nl_handle);
1133 nl_cb_put(drv->nl_cb);
1140 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1141 * @ctx: context to be used when calling wpa_supplicant functions,
1142 * e.g., wpa_supplicant_event()
1143 * @ifname: interface name, e.g., wlan0
1144 * Returns: Pointer to private data, %NULL on failure
1146 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1148 struct wpa_driver_nl80211_data *drv;
1149 struct netlink_config *cfg;
1151 drv = os_zalloc(sizeof(*drv));
1155 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1156 drv->monitor_ifidx = -1;
1157 drv->monitor_sock = -1;
1158 drv->ioctl_sock = -1;
1160 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1165 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1166 if (drv->ioctl_sock < 0) {
1167 perror("socket(PF_INET,SOCK_DGRAM)");
1171 cfg = os_zalloc(sizeof(*cfg));
1175 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1176 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1177 drv->netlink = netlink_init(cfg);
1178 if (drv->netlink == NULL) {
1182 if (wpa_driver_nl80211_finish_drv_init(drv))
1188 netlink_deinit(drv->netlink);
1189 if (drv->ioctl_sock >= 0)
1190 close(drv->ioctl_sock);
1192 genl_family_put(drv->nl80211);
1193 nl_cache_free(drv->nl_cache);
1194 nl_handle_destroy(drv->nl_handle);
1195 nl_cb_put(drv->nl_cb);
1203 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1205 drv->ifindex = if_nametoindex(drv->ifname);
1208 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1209 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1210 "use managed mode");
1213 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1214 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1219 if (wpa_driver_nl80211_capa(drv))
1222 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1223 1, IF_OPER_DORMANT);
1224 #endif /* HOSTAPD */
1231 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1233 struct i802_bss *bss, *prev;
1234 bss = drv->bss.next;
1241 #endif /* HOSTAPD */
1244 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1248 msg = nlmsg_alloc();
1252 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1253 0, NL80211_CMD_DEL_BEACON, 0);
1254 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1256 return send_and_recv_msgs(drv, msg, NULL, NULL);
1263 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1264 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1266 * Shut down driver interface and processing of driver events. Free
1267 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1269 static void wpa_driver_nl80211_deinit(void *priv)
1271 struct wpa_driver_nl80211_data *drv = priv;
1273 nl80211_remove_monitor_interface(drv);
1274 if (drv->monitor_sock >= 0) {
1275 eloop_unregister_read_sock(drv->monitor_sock);
1276 close(drv->monitor_sock);
1279 if (drv->nlmode == NL80211_IFTYPE_AP)
1280 wpa_driver_nl80211_del_beacon(drv);
1283 if (drv->last_freq_ht) {
1284 /* Clear HT flags from the driver */
1285 struct hostapd_freq_params freq;
1286 os_memset(&freq, 0, sizeof(freq));
1287 freq.freq = drv->last_freq;
1288 i802_set_freq(priv, &freq);
1291 if (drv->eapol_sock >= 0) {
1292 eloop_unregister_read_sock(drv->eapol_sock);
1293 close(drv->eapol_sock);
1296 if (drv->if_indices != drv->default_if_indices)
1297 os_free(drv->if_indices);
1299 wpa_driver_nl80211_free_bss(drv);
1300 #endif /* HOSTAPD */
1302 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1303 netlink_deinit(drv->netlink);
1305 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1307 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1308 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1310 if (drv->ioctl_sock >= 0)
1311 close(drv->ioctl_sock);
1313 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1314 genl_family_put(drv->nl80211);
1315 nl_cache_free(drv->nl_cache);
1316 nl_cache_free(drv->nl_cache_event);
1317 nl_handle_destroy(drv->nl_handle);
1318 nl_handle_destroy(drv->nl_handle_event);
1319 nl_cb_put(drv->nl_cb);
1326 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1327 * @eloop_ctx: Driver private data
1328 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1330 * This function can be used as registered timeout when starting a scan to
1331 * generate a scan completed event if the driver does not report this.
1333 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1335 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1336 if (drv->ap_scan_as_station) {
1337 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1338 drv->ap_scan_as_station = 0;
1340 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1341 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1346 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1347 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1348 * @params: Scan parameters
1349 * Returns: 0 on success, -1 on failure
1351 static int wpa_driver_nl80211_scan(void *priv,
1352 struct wpa_driver_scan_params *params)
1354 struct wpa_driver_nl80211_data *drv = priv;
1355 int ret = 0, timeout;
1356 struct nl_msg *msg, *ssids, *freqs;
1359 msg = nlmsg_alloc();
1360 ssids = nlmsg_alloc();
1361 freqs = nlmsg_alloc();
1362 if (!msg || !ssids || !freqs) {
1369 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1370 NL80211_CMD_TRIGGER_SCAN, 0);
1372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1374 for (i = 0; i < params->num_ssids; i++) {
1375 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1376 params->ssids[i].ssid);
1378 if (params->num_ssids)
1379 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1381 if (params->extra_ies) {
1382 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1386 if (params->freqs) {
1387 for (i = 0; params->freqs[i]; i++)
1388 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1389 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1392 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1395 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1396 "(%s)", ret, strerror(-ret));
1398 if (drv->nlmode == NL80211_IFTYPE_AP) {
1400 * mac80211 does not allow scan requests in AP mode, so
1401 * try to do this in station mode.
1403 if (wpa_driver_nl80211_set_mode(drv,
1404 IEEE80211_MODE_INFRA))
1405 goto nla_put_failure;
1407 if (wpa_driver_nl80211_scan(drv, params)) {
1408 wpa_driver_nl80211_set_mode(drv,
1410 goto nla_put_failure;
1413 /* Restore AP mode when processing scan results */
1414 drv->ap_scan_as_station = 1;
1417 goto nla_put_failure;
1419 goto nla_put_failure;
1420 #endif /* HOSTAPD */
1423 /* Not all drivers generate "scan completed" wireless event, so try to
1424 * read results after a timeout. */
1426 if (drv->scan_complete_events) {
1428 * The driver seems to deliver events to notify when scan is
1429 * complete, so use longer timeout to avoid race conditions
1430 * with scanning and following association request.
1434 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1435 "seconds", ret, timeout);
1436 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1437 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1448 static int bss_info_handler(struct nl_msg *msg, void *arg)
1450 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1451 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1452 struct nlattr *bss[NL80211_BSS_MAX + 1];
1453 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1454 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1455 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1456 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1457 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1458 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1459 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1460 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1461 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1462 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1463 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1465 struct wpa_scan_results *res = arg;
1466 struct wpa_scan_res **tmp;
1467 struct wpa_scan_res *r;
1471 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1472 genlmsg_attrlen(gnlh, 0), NULL);
1473 if (!tb[NL80211_ATTR_BSS])
1475 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1478 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1479 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1480 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1486 r = os_zalloc(sizeof(*r) + ie_len);
1489 if (bss[NL80211_BSS_BSSID])
1490 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1492 if (bss[NL80211_BSS_FREQUENCY])
1493 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1494 if (bss[NL80211_BSS_BEACON_INTERVAL])
1495 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1496 if (bss[NL80211_BSS_CAPABILITY])
1497 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1498 r->flags |= WPA_SCAN_NOISE_INVALID;
1499 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1500 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1501 r->level /= 100; /* mBm to dBm */
1502 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1503 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1504 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1505 r->flags |= WPA_SCAN_LEVEL_INVALID;
1507 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1508 if (bss[NL80211_BSS_TSF])
1509 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1510 if (bss[NL80211_BSS_SEEN_MS_AGO])
1511 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1514 os_memcpy(r + 1, ie, ie_len);
1516 if (bss[NL80211_BSS_STATUS]) {
1517 enum nl80211_bss_status status;
1518 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1520 case NL80211_BSS_STATUS_AUTHENTICATED:
1521 r->flags |= WPA_SCAN_AUTHENTICATED;
1523 case NL80211_BSS_STATUS_ASSOCIATED:
1524 r->flags |= WPA_SCAN_ASSOCIATED;
1531 tmp = os_realloc(res->res,
1532 (res->num + 1) * sizeof(struct wpa_scan_res *));
1537 tmp[res->num++] = r;
1544 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1547 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1548 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1550 wpa_driver_nl80211_mlme(drv, addr,
1551 NL80211_CMD_DEAUTHENTICATE,
1552 WLAN_REASON_PREV_AUTH_NOT_VALID);
1557 static void wpa_driver_nl80211_check_bss_status(
1558 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1562 for (i = 0; i < res->num; i++) {
1563 struct wpa_scan_res *r = res->res[i];
1564 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1565 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1566 "indicates BSS status with " MACSTR
1567 " as authenticated",
1569 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1570 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1571 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1573 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1574 " in local state (auth=" MACSTR
1575 " assoc=" MACSTR ")",
1576 MAC2STR(drv->auth_bssid),
1577 MAC2STR(drv->bssid));
1581 if (r->flags & WPA_SCAN_ASSOCIATED) {
1582 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1583 "indicate BSS status with " MACSTR
1586 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1588 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1589 "(not associated) does not match "
1591 clear_state_mismatch(drv, r->bssid);
1592 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1593 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1595 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1596 "(associated with " MACSTR ") does "
1597 "not match with BSS state",
1598 MAC2STR(drv->bssid));
1599 clear_state_mismatch(drv, r->bssid);
1600 clear_state_mismatch(drv, drv->bssid);
1608 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1609 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1610 * Returns: Scan results on success, -1 on failure
1612 static struct wpa_scan_results *
1613 wpa_driver_nl80211_get_scan_results(void *priv)
1615 struct wpa_driver_nl80211_data *drv = priv;
1617 struct wpa_scan_results *res;
1620 res = os_zalloc(sizeof(*res));
1623 msg = nlmsg_alloc();
1625 goto nla_put_failure;
1627 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1628 NL80211_CMD_GET_SCAN, 0);
1629 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1631 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1634 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1635 (unsigned long) res->num);
1636 wpa_driver_nl80211_check_bss_status(drv, res);
1639 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1640 "(%s)", ret, strerror(-ret));
1643 wpa_scan_results_free(res);
1648 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1649 wpa_alg alg, const u8 *addr, int key_idx,
1651 const u8 *seq, size_t seq_len,
1652 const u8 *key, size_t key_len)
1654 struct wpa_driver_nl80211_data *drv = priv;
1655 int ifindex = if_nametoindex(ifname);
1659 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1660 "set_tx=%d seq_len=%lu key_len=%lu",
1661 __func__, ifindex, alg, addr, key_idx, set_tx,
1662 (unsigned long) seq_len, (unsigned long) key_len);
1664 msg = nlmsg_alloc();
1668 if (alg == WPA_ALG_NONE) {
1669 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1670 0, NL80211_CMD_DEL_KEY, 0);
1672 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1673 0, NL80211_CMD_NEW_KEY, 0);
1674 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1678 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1679 WLAN_CIPHER_SUITE_WEP40);
1681 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1682 WLAN_CIPHER_SUITE_WEP104);
1685 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1686 WLAN_CIPHER_SUITE_TKIP);
1689 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1690 WLAN_CIPHER_SUITE_CCMP);
1693 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1694 WLAN_CIPHER_SUITE_AES_CMAC);
1697 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1698 "algorithm %d", __func__, alg);
1705 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1707 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1709 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1710 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1712 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1713 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1715 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1716 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1719 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1720 ret, strerror(-ret));
1723 * If we failed or don't need to set the default TX key (below),
1726 if (ret || !set_tx || alg == WPA_ALG_NONE)
1728 #ifdef HOSTAPD /* FIX: is this needed? */
1731 #endif /* HOSTAPD */
1733 msg = nlmsg_alloc();
1737 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1738 0, NL80211_CMD_SET_KEY, 0);
1739 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1740 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1741 if (alg == WPA_ALG_IGTK)
1742 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1744 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1746 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1750 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1751 "err=%d %s)", ret, strerror(-ret));
1759 static int nl_add_key(struct nl_msg *msg, wpa_alg alg,
1760 int key_idx, int defkey,
1761 const u8 *seq, size_t seq_len,
1762 const u8 *key, size_t key_len)
1764 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1768 if (defkey && alg == WPA_ALG_IGTK)
1769 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1771 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1773 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1778 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1779 WLAN_CIPHER_SUITE_WEP40);
1781 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1782 WLAN_CIPHER_SUITE_WEP104);
1785 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1788 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1791 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1792 WLAN_CIPHER_SUITE_AES_CMAC);
1795 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1796 "algorithm %d", __func__, alg);
1801 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1803 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1805 nla_nest_end(msg, key_attr);
1813 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1817 struct nlattr *nl_keys, *nl_key;
1819 for (i = 0; i < 4; i++) {
1820 if (!params->wep_key[i])
1828 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1830 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1832 goto nla_put_failure;
1834 for (i = 0; i < 4; i++) {
1835 if (!params->wep_key[i])
1838 nl_key = nla_nest_start(msg, i);
1840 goto nla_put_failure;
1842 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1843 params->wep_key[i]);
1844 if (params->wep_key_len[i] == 5)
1845 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1846 WLAN_CIPHER_SUITE_WEP40);
1848 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1849 WLAN_CIPHER_SUITE_WEP104);
1851 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1853 if (i == params->wep_tx_keyidx)
1854 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1856 nla_nest_end(msg, nl_key);
1858 nla_nest_end(msg, nl_keys);
1867 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1868 const u8 *addr, int cmd, u16 reason_code)
1873 msg = nlmsg_alloc();
1877 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1879 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1880 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1881 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1883 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1886 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1887 "(%s)", ret, strerror(-ret));
1888 goto nla_put_failure;
1898 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1899 const u8 *addr, int reason_code)
1901 wpa_printf(MSG_DEBUG, "%s", __func__);
1902 drv->associated = 0;
1903 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1908 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1911 struct wpa_driver_nl80211_data *drv = priv;
1912 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1913 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1914 wpa_printf(MSG_DEBUG, "%s", __func__);
1915 drv->associated = 0;
1916 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1921 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
1924 struct wpa_driver_nl80211_data *drv = priv;
1925 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1926 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1927 wpa_printf(MSG_DEBUG, "%s", __func__);
1928 drv->associated = 0;
1929 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1934 static int wpa_driver_nl80211_authenticate(
1935 void *priv, struct wpa_driver_auth_params *params)
1937 struct wpa_driver_nl80211_data *drv = priv;
1940 enum nl80211_auth_type type;
1943 drv->associated = 0;
1944 os_memset(drv->auth_bssid, 0, ETH_ALEN);
1946 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
1950 msg = nlmsg_alloc();
1954 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1957 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1958 NL80211_CMD_AUTHENTICATE, 0);
1960 for (i = 0; i < 4; i++) {
1961 if (!params->wep_key[i])
1963 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
1965 i == params->wep_tx_keyidx, NULL, 0,
1967 params->wep_key_len[i]);
1968 if (params->wep_tx_keyidx != i)
1970 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
1971 params->wep_key[i], params->wep_key_len[i])) {
1977 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1978 if (params->bssid) {
1979 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
1980 MAC2STR(params->bssid));
1981 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1984 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
1985 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1988 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
1989 params->ssid, params->ssid_len);
1990 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1993 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
1995 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1997 * TODO: if multiple auth_alg options enabled, try them one by one if
1998 * the AP rejects authentication due to unknown auth alg
2000 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2001 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2002 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2003 type = NL80211_AUTHTYPE_SHARED_KEY;
2004 else if (params->auth_alg & AUTH_ALG_LEAP)
2005 type = NL80211_AUTHTYPE_NETWORK_EAP;
2006 else if (params->auth_alg & AUTH_ALG_FT)
2007 type = NL80211_AUTHTYPE_FT;
2009 goto nla_put_failure;
2010 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2011 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2013 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2016 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2017 "(%s)", ret, strerror(-ret));
2019 if (ret == -EALREADY && count == 1 && params->bssid) {
2021 * mac80211 does not currently accept new
2022 * authentication if we are already authenticated. As a
2023 * workaround, force deauthentication and try again.
2025 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2026 "after forced deauthentication");
2027 wpa_driver_nl80211_deauthenticate(
2029 WLAN_REASON_PREV_AUTH_NOT_VALID);
2033 goto nla_put_failure;
2036 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2045 struct phy_info_arg {
2047 struct hostapd_hw_modes *modes;
2050 static int phy_info_handler(struct nl_msg *msg, void *arg)
2052 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2053 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2054 struct phy_info_arg *phy_info = arg;
2056 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2058 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2059 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2060 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2061 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2062 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2063 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2064 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2065 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2068 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2069 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2070 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2071 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2074 struct nlattr *nl_band;
2075 struct nlattr *nl_freq;
2076 struct nlattr *nl_rate;
2077 int rem_band, rem_freq, rem_rate;
2078 struct hostapd_hw_modes *mode;
2079 int idx, mode_is_set;
2081 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2082 genlmsg_attrlen(gnlh, 0), NULL);
2084 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2087 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2088 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2091 phy_info->modes = mode;
2095 mode = &phy_info->modes[*(phy_info->num_modes)];
2096 memset(mode, 0, sizeof(*mode));
2097 *(phy_info->num_modes) += 1;
2099 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2100 nla_len(nl_band), NULL);
2102 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2103 mode->ht_capab = nla_get_u16(
2104 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2107 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2108 mode->a_mpdu_params |= nla_get_u8(
2109 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2113 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2114 mode->a_mpdu_params |= nla_get_u8(
2115 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2119 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2120 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2122 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2123 os_memcpy(mode->mcs_set, mcs, 16);
2126 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2127 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2128 nla_len(nl_freq), freq_policy);
2129 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2131 mode->num_channels++;
2134 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
2135 if (!mode->channels)
2140 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2141 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2142 nla_len(nl_freq), freq_policy);
2143 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2146 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2147 mode->channels[idx].flag = 0;
2150 /* crude heuristic */
2151 if (mode->channels[idx].freq < 4000)
2152 mode->mode = HOSTAPD_MODE_IEEE80211B;
2154 mode->mode = HOSTAPD_MODE_IEEE80211A;
2158 /* crude heuristic */
2159 if (mode->channels[idx].freq < 4000)
2160 if (mode->channels[idx].freq == 2484)
2161 mode->channels[idx].chan = 14;
2163 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2165 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2167 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2168 mode->channels[idx].flag |=
2169 HOSTAPD_CHAN_DISABLED;
2170 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2171 mode->channels[idx].flag |=
2172 HOSTAPD_CHAN_PASSIVE_SCAN;
2173 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2174 mode->channels[idx].flag |=
2175 HOSTAPD_CHAN_NO_IBSS;
2176 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2177 mode->channels[idx].flag |=
2180 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2181 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2182 mode->channels[idx].max_tx_power =
2183 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2188 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2189 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2190 nla_len(nl_rate), rate_policy);
2191 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2196 mode->rates = calloc(mode->num_rates, sizeof(int));
2202 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2203 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2204 nla_len(nl_rate), rate_policy);
2205 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2207 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2209 /* crude heuristic */
2210 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2211 mode->rates[idx] > 200)
2212 mode->mode = HOSTAPD_MODE_IEEE80211G;
2221 static struct hostapd_hw_modes *
2222 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2225 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2226 int i, mode11g_idx = -1;
2228 /* If only 802.11g mode is included, use it to construct matching
2229 * 802.11b mode data. */
2231 for (m = 0; m < *num_modes; m++) {
2232 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2233 return modes; /* 802.11b already included */
2234 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2238 if (mode11g_idx < 0)
2239 return modes; /* 2.4 GHz band not supported at all */
2241 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2243 return modes; /* Could not add 802.11b mode */
2245 mode = &nmodes[*num_modes];
2246 os_memset(mode, 0, sizeof(*mode));
2250 mode->mode = HOSTAPD_MODE_IEEE80211B;
2252 mode11g = &modes[mode11g_idx];
2253 mode->num_channels = mode11g->num_channels;
2254 mode->channels = os_malloc(mode11g->num_channels *
2255 sizeof(struct hostapd_channel_data));
2256 if (mode->channels == NULL) {
2258 return modes; /* Could not add 802.11b mode */
2260 os_memcpy(mode->channels, mode11g->channels,
2261 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2263 mode->num_rates = 0;
2264 mode->rates = os_malloc(4 * sizeof(int));
2265 if (mode->rates == NULL) {
2266 os_free(mode->channels);
2268 return modes; /* Could not add 802.11b mode */
2271 for (i = 0; i < mode11g->num_rates; i++) {
2272 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2273 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2275 mode->rates[mode->num_rates] = mode11g->rates[i];
2277 if (mode->num_rates == 4)
2281 if (mode->num_rates == 0) {
2282 os_free(mode->channels);
2283 os_free(mode->rates);
2285 return modes; /* No 802.11b rates */
2288 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2295 static struct hostapd_hw_modes *
2296 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2298 struct wpa_driver_nl80211_data *drv = priv;
2300 struct phy_info_arg result = {
2301 .num_modes = num_modes,
2308 msg = nlmsg_alloc();
2312 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2313 0, NL80211_CMD_GET_WIPHY, 0);
2315 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2317 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2318 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2324 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2325 const void *data, size_t len,
2329 0x00, 0x00, /* radiotap version */
2330 0x0e, 0x00, /* radiotap length */
2331 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2332 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2334 0x00, 0x00, /* RX and TX flags to indicate that */
2335 0x00, 0x00, /* this is the injected frame directly */
2337 struct iovec iov[2] = {
2339 .iov_base = &rtap_hdr,
2340 .iov_len = sizeof(rtap_hdr),
2343 .iov_base = (void *) data,
2347 struct msghdr msg = {
2352 .msg_control = NULL,
2353 .msg_controllen = 0,
2358 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2360 return sendmsg(drv->monitor_sock, &msg, 0);
2364 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2367 struct wpa_driver_nl80211_data *drv = priv;
2368 struct ieee80211_mgmt *mgmt;
2372 mgmt = (struct ieee80211_mgmt *) data;
2373 fc = le_to_host16(mgmt->frame_control);
2375 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2376 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2378 * Only one of the authentication frame types is encrypted.
2379 * In order for static WEP encryption to work properly (i.e.,
2380 * to not encrypt the frame), we need to tell mac80211 about
2381 * the frames that must not be encrypted.
2383 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2384 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2385 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2389 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2393 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2394 const u8 *head, size_t head_len,
2395 const u8 *tail, size_t tail_len,
2396 int dtim_period, int beacon_int)
2398 struct wpa_driver_nl80211_data *drv = priv;
2400 u8 cmd = NL80211_CMD_NEW_BEACON;
2403 int ifindex = if_nametoindex(ifname);
2405 struct i802_bss *bss;
2407 bss = get_bss(drv, ifindex);
2410 beacon_set = bss->beacon_set;
2412 beacon_set = drv->beacon_set;
2413 #endif /* HOSTAPD */
2415 msg = nlmsg_alloc();
2419 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2422 cmd = NL80211_CMD_SET_BEACON;
2424 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2426 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2427 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2428 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2429 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2430 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2432 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2434 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2435 ret, strerror(-ret));
2438 bss->beacon_set = 1;
2440 drv->beacon_set = 1;
2441 #endif /* HOSTAPD */
2449 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2450 int freq, int ht_enabled,
2451 int sec_channel_offset)
2456 msg = nlmsg_alloc();
2460 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2461 NL80211_CMD_SET_WIPHY, 0);
2463 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2464 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2466 switch (sec_channel_offset) {
2468 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2469 NL80211_CHAN_HT40MINUS);
2472 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2473 NL80211_CHAN_HT40PLUS);
2476 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2482 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2485 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2486 "%d (%s)", freq, ret, strerror(-ret));
2492 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2493 struct hostapd_sta_add_params *params)
2495 struct wpa_driver_nl80211_data *drv = priv;
2499 msg = nlmsg_alloc();
2503 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2504 0, NL80211_CMD_NEW_STATION, 0);
2506 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2507 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2508 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2509 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2510 params->supp_rates);
2511 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2512 params->listen_interval);
2513 if (params->ht_capabilities) {
2514 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2515 sizeof(*params->ht_capabilities),
2516 params->ht_capabilities);
2519 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2521 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2522 "result: %d (%s)", ret, strerror(-ret));
2530 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2532 struct wpa_driver_nl80211_data *drv = priv;
2536 msg = nlmsg_alloc();
2540 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2541 0, NL80211_CMD_DEL_STATION, 0);
2543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2544 if_nametoindex(drv->ifname));
2545 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2547 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2556 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2562 /* stop listening for EAPOL on this interface */
2563 del_ifidx(drv, ifidx);
2564 #endif /* HOSTAPD */
2566 msg = nlmsg_alloc();
2568 goto nla_put_failure;
2570 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2571 0, NL80211_CMD_DEL_INTERFACE, 0);
2572 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2574 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2577 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2582 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2584 enum nl80211_iftype iftype,
2587 struct nl_msg *msg, *flags = NULL;
2591 msg = nlmsg_alloc();
2595 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2596 0, NL80211_CMD_NEW_INTERFACE, 0);
2597 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2598 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2599 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2601 if (iftype == NL80211_IFTYPE_MONITOR) {
2604 flags = nlmsg_alloc();
2606 goto nla_put_failure;
2608 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2610 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2615 goto nla_put_failure;
2618 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2621 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2622 ifname, ret, strerror(-ret));
2626 ifidx = if_nametoindex(ifname);
2632 /* start listening for EAPOL on this interface */
2633 add_ifidx(drv, ifidx);
2635 if (addr && iftype == NL80211_IFTYPE_AP &&
2636 set_ifhwaddr(drv, ifname, addr)) {
2637 nl80211_remove_iface(drv, ifidx);
2640 #endif /* HOSTAPD */
2646 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2647 const char *ifname, enum nl80211_iftype iftype,
2652 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2654 /* if error occured and interface exists already */
2655 if (ret == -ENFILE && if_nametoindex(ifname)) {
2656 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2658 /* Try to remove the interface that was already there. */
2659 nl80211_remove_iface(drv, if_nametoindex(ifname));
2661 /* Try to create the interface again */
2662 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2669 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2671 struct ieee80211_hdr *hdr;
2673 union wpa_event_data event;
2675 hdr = (struct ieee80211_hdr *) buf;
2676 fc = le_to_host16(hdr->frame_control);
2678 os_memset(&event, 0, sizeof(event));
2679 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2680 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2681 event.tx_status.dst = hdr->addr1;
2682 event.tx_status.data = buf;
2683 event.tx_status.data_len = len;
2684 event.tx_status.ack = ok;
2685 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
2689 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2690 struct ieee80211_hdr *hdr, size_t len)
2692 union wpa_event_data event;
2693 os_memset(&event, 0, sizeof(event));
2694 event.rx_from_unknown.hdr = hdr;
2695 event.rx_from_unknown.len = len;
2696 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2700 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2701 u8 *buf, size_t len,
2702 struct hostapd_frame_info *hfi)
2704 struct ieee80211_hdr *hdr;
2706 union wpa_event_data event;
2708 hdr = (struct ieee80211_hdr *) buf;
2709 fc = le_to_host16(hdr->frame_control);
2711 switch (WLAN_FC_GET_TYPE(fc)) {
2712 case WLAN_FC_TYPE_MGMT:
2713 os_memset(&event, 0, sizeof(event));
2714 event.rx_mgmt.frame = buf;
2715 event.rx_mgmt.frame_len = len;
2716 event.rx_mgmt.fi = hfi;
2717 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
2719 case WLAN_FC_TYPE_CTRL:
2720 /* can only get here with PS-Poll frames */
2721 wpa_printf(MSG_DEBUG, "CTRL");
2722 from_unknown_sta(drv, hdr, len);
2724 case WLAN_FC_TYPE_DATA:
2725 from_unknown_sta(drv, hdr, len);
2731 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2733 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2735 unsigned char buf[3000];
2736 struct ieee80211_radiotap_iterator iter;
2738 struct hostapd_frame_info hfi;
2739 int injected = 0, failed = 0, rxflags = 0;
2741 len = recv(sock, buf, sizeof(buf), 0);
2747 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2748 printf("received invalid radiotap frame\n");
2752 memset(&hfi, 0, sizeof(hfi));
2755 ret = ieee80211_radiotap_iterator_next(&iter);
2759 printf("received invalid radiotap frame (%d)\n", ret);
2762 switch (iter.this_arg_index) {
2763 case IEEE80211_RADIOTAP_FLAGS:
2764 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2767 case IEEE80211_RADIOTAP_RX_FLAGS:
2770 case IEEE80211_RADIOTAP_TX_FLAGS:
2772 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2773 IEEE80211_RADIOTAP_F_TX_FAIL;
2775 case IEEE80211_RADIOTAP_DATA_RETRIES:
2777 case IEEE80211_RADIOTAP_CHANNEL:
2778 /* TODO convert from freq/flags to channel number
2782 case IEEE80211_RADIOTAP_RATE:
2783 hfi.datarate = *iter.this_arg * 5;
2785 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2786 hfi.ssi_signal = *iter.this_arg;
2791 if (rxflags && injected)
2795 handle_frame(drv, buf + iter.max_length,
2796 len - iter.max_length, &hfi);
2798 handle_tx_callback(drv->ctx, buf + iter.max_length,
2799 len - iter.max_length, !failed);
2804 * we post-process the filter code later and rewrite
2805 * this to the offset to the last instruction
2810 static struct sock_filter msock_filter_insns[] = {
2812 * do a little-endian load of the radiotap length field
2814 /* load lower byte into A */
2815 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2816 /* put it into X (== index register) */
2817 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2818 /* load upper byte into A */
2819 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2820 /* left-shift it by 8 */
2821 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2823 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2824 /* put result into X */
2825 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2828 * Allow management frames through, this also gives us those
2829 * management frames that we sent ourselves with status
2831 /* load the lower byte of the IEEE 802.11 frame control field */
2832 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2833 /* mask off frame type and version */
2834 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2835 /* accept frame if it's both 0, fall through otherwise */
2836 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2839 * TODO: add a bit to radiotap RX flags that indicates
2840 * that the sending station is not associated, then
2841 * add a filter here that filters on our DA and that flag
2842 * to allow us to deauth frames to that bad station.
2844 * Not a regression -- we didn't do it before either.
2849 * drop non-data frames, WDS frames
2851 /* load the lower byte of the frame control field */
2852 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2853 /* mask off QoS bit */
2854 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2855 /* drop non-data frames */
2856 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2857 /* load the upper byte of the frame control field */
2858 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2859 /* mask off toDS/fromDS */
2860 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2861 /* drop WDS frames */
2862 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2866 * add header length to index
2868 /* load the lower byte of the frame control field */
2869 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2870 /* mask off QoS bit */
2871 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2872 /* right shift it by 6 to give 0 or 2 */
2873 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2874 /* add data frame header length */
2875 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2876 /* add index, was start of 802.11 header */
2877 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2878 /* move to index, now start of LL header */
2879 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2882 * Accept empty data frames, we use those for
2885 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2886 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2889 * Accept EAPOL frames
2891 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2892 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2893 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2894 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2896 /* keep these last two statements or change the code below */
2897 /* return 0 == "DROP" */
2898 BPF_STMT(BPF_RET | BPF_K, 0),
2899 /* return ~0 == "keep all" */
2900 BPF_STMT(BPF_RET | BPF_K, ~0),
2903 static struct sock_fprog msock_filter = {
2904 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2905 .filter = msock_filter_insns,
2909 static int add_monitor_filter(int s)
2913 /* rewrite all PASS/FAIL jump offsets */
2914 for (idx = 0; idx < msock_filter.len; idx++) {
2915 struct sock_filter *insn = &msock_filter_insns[idx];
2917 if (BPF_CLASS(insn->code) == BPF_JMP) {
2918 if (insn->code == (BPF_JMP|BPF_JA)) {
2919 if (insn->k == PASS)
2920 insn->k = msock_filter.len - idx - 2;
2921 else if (insn->k == FAIL)
2922 insn->k = msock_filter.len - idx - 3;
2925 if (insn->jt == PASS)
2926 insn->jt = msock_filter.len - idx - 2;
2927 else if (insn->jt == FAIL)
2928 insn->jt = msock_filter.len - idx - 3;
2930 if (insn->jf == PASS)
2931 insn->jf = msock_filter.len - idx - 2;
2932 else if (insn->jf == FAIL)
2933 insn->jf = msock_filter.len - idx - 3;
2937 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2938 &msock_filter, sizeof(msock_filter))) {
2939 perror("SO_ATTACH_FILTER");
2947 static void nl80211_remove_monitor_interface(
2948 struct wpa_driver_nl80211_data *drv)
2950 if (drv->monitor_ifidx >= 0) {
2951 nl80211_remove_iface(drv, drv->monitor_ifidx);
2952 drv->monitor_ifidx = -1;
2958 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2961 struct sockaddr_ll ll;
2965 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2966 buf[IFNAMSIZ - 1] = '\0';
2968 drv->monitor_ifidx =
2969 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2971 if (drv->monitor_ifidx < 0)
2974 if (hostapd_set_iface_flags(drv, buf, 1))
2977 memset(&ll, 0, sizeof(ll));
2978 ll.sll_family = AF_PACKET;
2979 ll.sll_ifindex = drv->monitor_ifidx;
2980 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2981 if (drv->monitor_sock < 0) {
2982 perror("socket[PF_PACKET,SOCK_RAW]");
2986 if (add_monitor_filter(drv->monitor_sock)) {
2987 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2988 "interface; do filtering in user space");
2989 /* This works, but will cost in performance. */
2992 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
2993 perror("monitor socket bind");
2997 optlen = sizeof(optval);
3000 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3001 perror("Failed to set socket priority");
3005 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3007 printf("Could not register monitor read socket\n");
3013 nl80211_remove_monitor_interface(drv);
3018 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3020 static int wpa_driver_nl80211_hapd_send_eapol(
3021 void *priv, const u8 *addr, const u8 *data,
3022 size_t data_len, int encrypt, const u8 *own_addr)
3024 struct wpa_driver_nl80211_data *drv = priv;
3025 struct ieee80211_hdr *hdr;
3030 int qos = sta->flags & WPA_STA_WMM;
3035 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3037 hdr = os_zalloc(len);
3039 printf("malloc() failed for i802_send_data(len=%lu)\n",
3040 (unsigned long) len);
3044 hdr->frame_control =
3045 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3046 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3048 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3049 #if 0 /* To be enabled if qos determination is added above */
3051 hdr->frame_control |=
3052 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3056 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3057 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3058 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3059 pos = (u8 *) (hdr + 1);
3061 #if 0 /* To be enabled if qos determination is added above */
3063 /* add an empty QoS header if needed */
3070 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3071 pos += sizeof(rfc1042_header);
3072 WPA_PUT_BE16(pos, ETH_P_PAE);
3074 memcpy(pos, data, data_len);
3076 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3078 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3080 (unsigned long) len, errno, strerror(errno));
3088 static u32 sta_flags_nl80211(int flags)
3092 if (flags & WPA_STA_AUTHORIZED)
3093 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3094 if (flags & WPA_STA_WMM)
3095 f |= BIT(NL80211_STA_FLAG_WME);
3096 if (flags & WPA_STA_SHORT_PREAMBLE)
3097 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3098 if (flags & WPA_STA_MFP)
3099 f |= BIT(NL80211_STA_FLAG_MFP);
3105 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3106 int total_flags, int flags_or,
3109 struct wpa_driver_nl80211_data *drv = priv;
3110 struct nl_msg *msg, *flags = NULL;
3111 struct nl80211_sta_flag_update upd;
3113 msg = nlmsg_alloc();
3117 flags = nlmsg_alloc();
3123 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3124 0, NL80211_CMD_SET_STATION, 0);
3126 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3127 if_nametoindex(drv->ifname));
3128 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3131 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3132 * can be removed eventually.
3134 if (total_flags & WPA_STA_AUTHORIZED)
3135 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3137 if (total_flags & WPA_STA_WMM)
3138 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3140 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3141 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3143 if (total_flags & WPA_STA_MFP)
3144 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3146 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3147 goto nla_put_failure;
3149 os_memset(&upd, 0, sizeof(upd));
3150 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3151 upd.set = sta_flags_nl80211(flags_or);
3152 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3156 return send_and_recv_msgs(drv, msg, NULL, NULL);
3163 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3164 struct wpa_driver_associate_params *params)
3166 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3167 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3168 nl80211_remove_monitor_interface(drv);
3172 /* TODO: setup monitor interface (and add code somewhere to remove this
3173 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3179 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3184 msg = nlmsg_alloc();
3188 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3189 NL80211_CMD_LEAVE_IBSS, 0);
3190 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3191 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3194 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3195 "(%s)", ret, strerror(-ret));
3196 goto nla_put_failure;
3200 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3208 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3209 struct wpa_driver_associate_params *params)
3215 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3217 if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3218 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3224 msg = nlmsg_alloc();
3228 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3229 NL80211_CMD_JOIN_IBSS, 0);
3230 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3232 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3233 goto nla_put_failure;
3235 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3236 params->ssid, params->ssid_len);
3237 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3239 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3240 drv->ssid_len = params->ssid_len;
3242 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3243 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3245 ret = nl80211_set_conn_keys(params, msg);
3247 goto nla_put_failure;
3249 if (params->wpa_ie) {
3250 wpa_hexdump(MSG_DEBUG,
3251 " * Extra IEs for Beacon/Probe Response frames",
3252 params->wpa_ie, params->wpa_ie_len);
3253 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3257 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3260 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3261 ret, strerror(-ret));
3263 if (ret == -EALREADY && count == 1) {
3264 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3266 nl80211_leave_ibss(drv);
3271 goto nla_put_failure;
3274 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3282 static int wpa_driver_nl80211_connect(
3283 struct wpa_driver_nl80211_data *drv,
3284 struct wpa_driver_associate_params *params)
3287 enum nl80211_auth_type type;
3290 msg = nlmsg_alloc();
3294 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3295 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3296 NL80211_CMD_CONNECT, 0);
3298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3299 if (params->bssid) {
3300 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3301 MAC2STR(params->bssid));
3302 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3305 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3306 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3309 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3310 params->ssid, params->ssid_len);
3311 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3313 if (params->ssid_len > sizeof(drv->ssid))
3314 goto nla_put_failure;
3315 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3316 drv->ssid_len = params->ssid_len;
3318 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3320 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3323 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3324 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3325 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3326 type = NL80211_AUTHTYPE_SHARED_KEY;
3327 else if (params->auth_alg & AUTH_ALG_LEAP)
3328 type = NL80211_AUTHTYPE_NETWORK_EAP;
3329 else if (params->auth_alg & AUTH_ALG_FT)
3330 type = NL80211_AUTHTYPE_FT;
3332 goto nla_put_failure;
3334 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3335 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3337 if (params->wpa_ie && params->wpa_ie_len) {
3338 enum nl80211_wpa_versions ver;
3340 if (params->wpa_ie[0] == WLAN_EID_RSN)
3341 ver = NL80211_WPA_VERSION_2;
3343 ver = NL80211_WPA_VERSION_1;
3345 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3346 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3349 if (params->pairwise_suite != CIPHER_NONE) {
3352 switch (params->pairwise_suite) {
3354 cipher = WLAN_CIPHER_SUITE_WEP40;
3357 cipher = WLAN_CIPHER_SUITE_WEP104;
3360 cipher = WLAN_CIPHER_SUITE_CCMP;
3364 cipher = WLAN_CIPHER_SUITE_TKIP;
3367 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3370 if (params->group_suite != CIPHER_NONE) {
3373 switch (params->group_suite) {
3375 cipher = WLAN_CIPHER_SUITE_WEP40;
3378 cipher = WLAN_CIPHER_SUITE_WEP104;
3381 cipher = WLAN_CIPHER_SUITE_CCMP;
3385 cipher = WLAN_CIPHER_SUITE_TKIP;
3388 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3391 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3392 params->key_mgmt_suite == KEY_MGMT_PSK) {
3393 int mgmt = WLAN_AKM_SUITE_PSK;
3395 switch (params->key_mgmt_suite) {
3396 case KEY_MGMT_802_1X:
3397 mgmt = WLAN_AKM_SUITE_8021X;
3401 mgmt = WLAN_AKM_SUITE_PSK;
3404 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3407 ret = nl80211_set_conn_keys(params, msg);
3409 goto nla_put_failure;
3411 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3414 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3415 "(%s)", ret, strerror(-ret));
3416 goto nla_put_failure;
3419 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3428 static int wpa_driver_nl80211_associate(
3429 void *priv, struct wpa_driver_associate_params *params)
3431 struct wpa_driver_nl80211_data *drv = priv;
3435 if (params->mode == IEEE80211_MODE_AP)
3436 return wpa_driver_nl80211_ap(drv, params);
3438 if (params->mode == IEEE80211_MODE_IBSS)
3439 return wpa_driver_nl80211_ibss(drv, params);
3441 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3442 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3444 return wpa_driver_nl80211_connect(drv, params);
3447 drv->associated = 0;
3449 msg = nlmsg_alloc();
3453 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3455 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3456 NL80211_CMD_ASSOCIATE, 0);
3458 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3459 if (params->bssid) {
3460 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3461 MAC2STR(params->bssid));
3462 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3465 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3466 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3469 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3470 params->ssid, params->ssid_len);
3471 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3473 if (params->ssid_len > sizeof(drv->ssid))
3474 goto nla_put_failure;
3475 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3476 drv->ssid_len = params->ssid_len;
3478 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3480 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3483 #ifdef CONFIG_IEEE80211W
3484 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3485 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3486 #endif /* CONFIG_IEEE80211W */
3488 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3490 if (params->prev_bssid) {
3491 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3492 MAC2STR(params->prev_bssid));
3493 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3494 params->prev_bssid);
3497 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3500 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3501 "(%s)", ret, strerror(-ret));
3502 goto nla_put_failure;
3505 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3514 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3515 int ifindex, int mode)
3520 msg = nlmsg_alloc();
3524 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3525 0, NL80211_CMD_SET_INTERFACE, 0);
3526 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3527 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3529 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3533 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3534 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3539 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3541 struct wpa_driver_nl80211_data *drv = priv;
3547 nlmode = NL80211_IFTYPE_STATION;
3550 nlmode = NL80211_IFTYPE_ADHOC;
3553 nlmode = NL80211_IFTYPE_AP;
3559 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3560 drv->nlmode = nlmode;
3565 if (nlmode == drv->nlmode) {
3567 goto done; /* Already in the requested mode */
3570 /* mac80211 doesn't allow mode changes while the device is up, so
3571 * take the device down, try to set the mode again, and bring the
3574 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3575 /* Try to set the mode again while the interface is down */
3576 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3577 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3582 drv->nlmode = nlmode;
3585 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3586 /* Setup additional AP mode functionality if needed */
3587 if (drv->monitor_ifidx < 0 &&
3588 nl80211_create_monitor_interface(drv))
3590 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3591 /* Remove additional AP mode functionality */
3592 nl80211_remove_monitor_interface(drv);
3599 static int wpa_driver_nl80211_get_capa(void *priv,
3600 struct wpa_driver_capa *capa)
3602 struct wpa_driver_nl80211_data *drv = priv;
3603 if (!drv->has_capability)
3605 os_memcpy(capa, &drv->capa, sizeof(*capa));
3610 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3612 struct wpa_driver_nl80211_data *drv = priv;
3614 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3615 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3616 drv->operstate = state;
3617 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3618 state ? IF_OPER_UP : IF_OPER_DORMANT);
3622 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3624 struct wpa_driver_nl80211_data *drv = priv;
3626 struct nl80211_sta_flag_update upd;
3628 msg = nlmsg_alloc();
3632 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3633 0, NL80211_CMD_SET_STATION, 0);
3635 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3636 if_nametoindex(drv->ifname));
3637 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3639 os_memset(&upd, 0, sizeof(upd));
3640 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3642 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3643 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3645 return send_and_recv_msgs(drv, msg, NULL, NULL);
3653 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3656 struct i802_bss *bss = &drv->bss;
3658 if (ifindex == bss->ifindex)
3662 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3667 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3672 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3674 for (i = 0; i < drv->num_if_indices; i++) {
3675 if (drv->if_indices[i] == 0) {
3676 drv->if_indices[i] = ifidx;
3681 if (drv->if_indices != drv->default_if_indices)
3682 old = drv->if_indices;
3686 drv->if_indices = realloc(old,
3687 sizeof(int) * (drv->num_if_indices + 1));
3688 if (!drv->if_indices) {
3690 drv->if_indices = drv->default_if_indices;
3692 drv->if_indices = old;
3693 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3695 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3698 drv->if_indices[drv->num_if_indices] = ifidx;
3699 drv->num_if_indices++;
3703 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3707 for (i = 0; i < drv->num_if_indices; i++) {
3708 if (drv->if_indices[i] == ifidx) {
3709 drv->if_indices[i] = 0;
3716 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3720 for (i = 0; i < drv->num_if_indices; i++)
3721 if (drv->if_indices[i] == ifidx)
3728 static inline int min_int(int a, int b)
3736 static int get_key_handler(struct nl_msg *msg, void *arg)
3738 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3739 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3741 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3742 genlmsg_attrlen(gnlh, 0), NULL);
3745 * TODO: validate the key index and mac address!
3746 * Otherwise, there's a race condition as soon as
3747 * the kernel starts sending key notifications.
3750 if (tb[NL80211_ATTR_KEY_SEQ])
3751 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3752 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3757 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3760 struct wpa_driver_nl80211_data *drv = priv;
3763 msg = nlmsg_alloc();
3767 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3768 0, NL80211_CMD_GET_KEY, 0);
3771 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3772 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3773 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3777 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3783 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3786 struct wpa_driver_nl80211_data *drv = priv;
3788 u8 rates[NL80211_MAX_SUPP_RATES];
3792 msg = nlmsg_alloc();
3796 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3797 NL80211_CMD_SET_BSS, 0);
3799 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3800 rates[rates_len++] = basic_rates[i] / 5;
3802 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3804 /* TODO: multi-BSS support */
3805 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3807 return send_and_recv_msgs(drv, msg, NULL, NULL);
3813 /* Set kernel driver on given frequency (MHz) */
3814 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3816 struct wpa_driver_nl80211_data *drv = priv;
3817 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3818 freq->sec_channel_offset);
3822 static int i802_set_rts(void *priv, int rts)
3824 struct wpa_driver_nl80211_data *drv = priv;
3829 msg = nlmsg_alloc();
3838 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3839 0, NL80211_CMD_SET_WIPHY, 0);
3840 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3841 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3843 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3847 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3848 "%d (%s)", rts, ret, strerror(-ret));
3853 static int i802_set_frag(void *priv, int frag)
3855 struct wpa_driver_nl80211_data *drv = priv;
3860 msg = nlmsg_alloc();
3869 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3870 0, NL80211_CMD_SET_WIPHY, 0);
3871 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3872 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3874 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3878 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3879 "%d: %d (%s)", frag, ret, strerror(-ret));
3884 static int i802_flush(void *priv)
3886 struct wpa_driver_nl80211_data *drv = priv;
3889 msg = nlmsg_alloc();
3893 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3894 0, NL80211_CMD_DEL_STATION, 0);
3897 * XXX: FIX! this needs to flush all VLANs too
3899 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3900 if_nametoindex(drv->ifname));
3902 return send_and_recv_msgs(drv, msg, NULL, NULL);
3908 static int get_sta_handler(struct nl_msg *msg, void *arg)
3910 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3911 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3912 struct hostap_sta_driver_data *data = arg;
3913 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3914 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3915 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3916 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3917 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3918 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3919 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3922 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3923 genlmsg_attrlen(gnlh, 0), NULL);
3926 * TODO: validate the interface and mac address!
3927 * Otherwise, there's a race condition as soon as
3928 * the kernel starts sending station notifications.
3931 if (!tb[NL80211_ATTR_STA_INFO]) {
3932 wpa_printf(MSG_DEBUG, "sta stats missing!");
3935 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3936 tb[NL80211_ATTR_STA_INFO],
3938 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3942 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3943 data->inactive_msec =
3944 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3945 if (stats[NL80211_STA_INFO_RX_BYTES])
3946 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3947 if (stats[NL80211_STA_INFO_TX_BYTES])
3948 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3949 if (stats[NL80211_STA_INFO_RX_PACKETS])
3951 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3952 if (stats[NL80211_STA_INFO_TX_PACKETS])
3954 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3959 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3962 struct wpa_driver_nl80211_data *drv = priv;
3965 os_memset(data, 0, sizeof(*data));
3966 msg = nlmsg_alloc();
3970 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3971 0, NL80211_CMD_GET_STATION, 0);
3973 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3974 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3976 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3982 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3983 int cw_min, int cw_max, int burst_time)
3985 struct wpa_driver_nl80211_data *drv = priv;
3987 struct nlattr *txq, *params;
3989 msg = nlmsg_alloc();
3993 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3994 0, NL80211_CMD_SET_WIPHY, 0);
3996 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3998 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4000 goto nla_put_failure;
4002 /* We are only sending parameters for a single TXQ at a time */
4003 params = nla_nest_start(msg, 1);
4005 goto nla_put_failure;
4007 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4008 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4009 * 32 usec, so need to convert the value here. */
4010 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4011 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4012 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4013 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4015 nla_nest_end(msg, params);
4017 nla_nest_end(msg, txq);
4019 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4026 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4028 struct wpa_driver_nl80211_data *drv = priv;
4031 msg = nlmsg_alloc();
4035 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4036 NL80211_CMD_SET_BSS, 0);
4039 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4041 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4043 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4045 /* TODO: multi-BSS support */
4046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4048 return send_and_recv_msgs(drv, msg, NULL, NULL);
4054 static int i802_set_cts_protect(void *priv, int value)
4056 return i802_set_bss(priv, value, -1, -1);
4060 static int i802_set_preamble(void *priv, int value)
4062 return i802_set_bss(priv, -1, value, -1);
4066 static int i802_set_short_slot_time(void *priv, int value)
4068 return i802_set_bss(priv, -1, -1, value);
4072 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4073 const char *ifname, int vlan_id)
4075 struct wpa_driver_nl80211_data *drv = priv;
4078 msg = nlmsg_alloc();
4082 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4083 0, NL80211_CMD_SET_STATION, 0);
4085 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4086 if_nametoindex(drv->ifname));
4087 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4088 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4089 if_nametoindex(ifname));
4091 return send_and_recv_msgs(drv, msg, NULL, NULL);
4097 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4099 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4100 struct sockaddr_ll lladdr;
4101 unsigned char buf[3000];
4103 socklen_t fromlen = sizeof(lladdr);
4105 len = recvfrom(sock, buf, sizeof(buf), 0,
4106 (struct sockaddr *)&lladdr, &fromlen);
4112 if (have_ifidx(drv, lladdr.sll_ifindex)) {
4114 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
4117 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
4122 static int i802_get_inact_sec(void *priv, const u8 *addr)
4124 struct hostap_sta_driver_data data;
4127 data.inactive_msec = (unsigned long) -1;
4128 ret = i802_read_sta_data(priv, &data, addr);
4129 if (ret || data.inactive_msec == (unsigned long) -1)
4131 return data.inactive_msec / 1000;
4135 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4144 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4147 struct wpa_driver_nl80211_data *drv = priv;
4148 struct ieee80211_mgmt mgmt;
4150 memset(&mgmt, 0, sizeof(mgmt));
4151 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4152 WLAN_FC_STYPE_DEAUTH);
4153 memcpy(mgmt.da, addr, ETH_ALEN);
4154 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4155 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4156 mgmt.u.deauth.reason_code = host_to_le16(reason);
4157 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4159 sizeof(mgmt.u.deauth));
4163 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4166 struct wpa_driver_nl80211_data *drv = priv;
4167 struct ieee80211_mgmt mgmt;
4169 memset(&mgmt, 0, sizeof(mgmt));
4170 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4171 WLAN_FC_STYPE_DISASSOC);
4172 memcpy(mgmt.da, addr, ETH_ALEN);
4173 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4174 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4175 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4176 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4178 sizeof(mgmt.u.disassoc));
4182 static void *i802_init(struct hostapd_data *hapd,
4183 struct wpa_init_params *params)
4185 struct wpa_driver_nl80211_data *drv;
4188 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4192 drv->bss.ifindex = drv->ifindex;
4194 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4195 drv->if_indices = drv->default_if_indices;
4196 for (i = 0; i < params->num_bridge; i++) {
4197 if (params->bridge[i])
4198 add_ifidx(drv, if_nametoindex(params->bridge[i]));
4201 /* start listening for EAPOL on the default AP interface */
4202 add_ifidx(drv, drv->ifindex);
4204 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4207 if (params->bssid) {
4208 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4212 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4213 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4214 "into AP mode", drv->ifname);
4218 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4221 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4222 if (drv->eapol_sock < 0) {
4223 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4227 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4229 printf("Could not register read socket for eapol\n");
4233 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4239 nl80211_remove_monitor_interface(drv);
4240 if (drv->ioctl_sock >= 0)
4241 close(drv->ioctl_sock);
4243 genl_family_put(drv->nl80211);
4244 nl_cache_free(drv->nl_cache);
4245 nl_handle_destroy(drv->nl_handle);
4246 nl_cb_put(drv->nl_cb);
4253 static void i802_deinit(void *priv)
4255 wpa_driver_nl80211_deinit(priv);
4258 #endif /* HOSTAPD */
4261 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4262 enum wpa_driver_if_type type)
4265 case WPA_IF_STATION:
4266 return NL80211_IFTYPE_STATION;
4267 case WPA_IF_AP_VLAN:
4268 return NL80211_IFTYPE_AP_VLAN;
4270 return NL80211_IFTYPE_AP;
4276 static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4277 enum wpa_driver_if_type type,
4278 const char *ifname, const u8 *addr,
4281 struct wpa_driver_nl80211_data *drv = priv;
4284 struct i802_bss *bss = NULL;
4286 if (type == WPA_IF_AP_BSS) {
4287 bss = os_zalloc(sizeof(*bss));
4291 #endif /* HOSTAPD */
4293 ifidx = nl80211_create_iface(drv, ifname,
4294 wpa_driver_nl80211_if_type(type), addr);
4298 #endif /* HOSTAPD */
4303 if (type == WPA_IF_AP_BSS) {
4304 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4305 nl80211_remove_iface(priv, ifidx);
4309 bss->ifindex = ifidx;
4310 bss->next = drv->bss.next;
4311 drv->bss.next = bss;
4313 #endif /* HOSTAPD */
4319 static int wpa_driver_nl80211_if_remove(void *priv,
4320 enum wpa_driver_if_type type,
4323 struct wpa_driver_nl80211_data *drv = priv;
4324 int ifindex = if_nametoindex(ifname);
4326 nl80211_remove_iface(drv, ifindex);
4329 if (type == WPA_IF_AP_BSS) {
4330 struct i802_bss *bss, *prev;
4332 bss = drv->bss.next;
4334 if (ifindex == bss->ifindex) {
4335 prev->next = bss->next;
4343 #endif /* HOSTAPD */
4349 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4351 .desc = "Linux nl80211/cfg80211",
4352 .get_bssid = wpa_driver_nl80211_get_bssid,
4353 .get_ssid = wpa_driver_nl80211_get_ssid,
4354 .set_key = wpa_driver_nl80211_set_key,
4355 .scan2 = wpa_driver_nl80211_scan,
4356 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4357 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4358 .disassociate = wpa_driver_nl80211_disassociate,
4359 .authenticate = wpa_driver_nl80211_authenticate,
4360 .associate = wpa_driver_nl80211_associate,
4361 .init = wpa_driver_nl80211_init,
4362 .deinit = wpa_driver_nl80211_deinit,
4363 .get_capa = wpa_driver_nl80211_get_capa,
4364 .set_operstate = wpa_driver_nl80211_set_operstate,
4365 .set_supp_port = wpa_driver_nl80211_set_supp_port,
4366 .set_country = wpa_driver_nl80211_set_country,
4367 .set_beacon = wpa_driver_nl80211_set_beacon,
4368 .if_add = wpa_driver_nl80211_if_add,
4369 .if_remove = wpa_driver_nl80211_if_remove,
4370 .send_mlme = wpa_driver_nl80211_send_mlme,
4371 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4372 .sta_add = wpa_driver_nl80211_sta_add,
4373 .sta_remove = wpa_driver_nl80211_sta_remove,
4374 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4375 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4377 .hapd_init = i802_init,
4378 .hapd_deinit = i802_deinit,
4379 .get_seqnum = i802_get_seqnum,
4380 .flush = i802_flush,
4381 .read_sta_data = i802_read_sta_data,
4382 .sta_deauth = i802_sta_deauth,
4383 .sta_disassoc = i802_sta_disassoc,
4384 .get_inact_sec = i802_get_inact_sec,
4385 .sta_clear_stats = i802_sta_clear_stats,
4386 .set_freq = i802_set_freq,
4387 .set_rts = i802_set_rts,
4388 .set_frag = i802_set_frag,
4389 .set_rate_sets = i802_set_rate_sets,
4390 .set_cts_protect = i802_set_cts_protect,
4391 .set_preamble = i802_set_preamble,
4392 .set_short_slot_time = i802_set_short_slot_time,
4393 .set_tx_queue_params = i802_set_tx_queue_params,
4394 .set_sta_vlan = i802_set_sta_vlan,
4395 #endif /* HOSTAPD */