2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009, Atheros Communications
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * Alternatively, this software may be distributed under the terms of BSD
16 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
21 #include <net/if_arp.h>
23 #include <netlink/genl/genl.h>
24 #include <netlink/genl/family.h>
25 #include <netlink/genl/ctrl.h>
26 #include "nl80211_copy.h"
31 #include "ieee802_11_defs.h"
33 #if defined(CONFIG_AP) || defined(HOSTAPD)
34 #include <netpacket/packet.h>
35 #include <linux/filter.h>
37 #include "radiotap_iter.h"
39 #include "../../hostapd/sta_flags.h"
40 #endif /* CONFIG_AP || HOSTAPD */
43 #include "ieee802_11_common.h"
47 /* libnl 2.0 compatibility code */
48 #define nl_handle nl_sock
49 #define nl_handle_alloc_cb nl_socket_alloc_cb
50 #define nl_handle_destroy nl_socket_free
51 #endif /* CONFIG_LIBNL20 */
55 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
58 #define IFF_DORMANT 0x20000 /* driver signals dormant */
61 #ifndef IF_OPER_DORMANT
62 #define IF_OPER_DORMANT 5
69 struct i802_bss *next;
71 unsigned int beacon_set:1;
74 struct wpa_driver_nl80211_data {
77 int ioctl_sock; /* socket for ioctl() use */
78 char ifname[IFNAMSIZ + 1];
81 struct wpa_driver_capa capa;
86 int scan_complete_events;
88 struct nl_handle *nl_handle;
89 struct nl_handle *nl_handle_event;
90 struct nl_cache *nl_cache;
91 struct nl_cache *nl_cache_event;
93 struct genl_family *nl80211;
100 int ap_scan_as_station;
105 unsigned int beacon_set:1;
108 int eapol_sock; /* socket for EAPOL frames */
110 int default_if_indices[16];
122 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
124 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
126 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
128 #if defined(CONFIG_AP) || defined(HOSTAPD)
129 static void nl80211_remove_monitor_interface(
130 struct wpa_driver_nl80211_data *drv);
131 #endif /* CONFIG_AP || HOSTAPD */
134 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
136 #endif /* CONFIG_AP */
139 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
140 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
141 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
143 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
145 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
150 static int ack_handler(struct nl_msg *msg, void *arg)
157 static int finish_handler(struct nl_msg *msg, void *arg)
164 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
173 static int no_seq_check(struct nl_msg *msg, void *arg)
179 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
181 int (*valid_handler)(struct nl_msg *, void *),
187 cb = nl_cb_clone(drv->nl_cb);
191 err = nl_send_auto_complete(drv->nl_handle, msg);
197 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
198 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
199 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
202 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
203 valid_handler, valid_data);
206 nl_recvmsgs(drv->nl_handle, cb);
220 static int family_handler(struct nl_msg *msg, void *arg)
222 struct family_data *res = arg;
223 struct nlattr *tb[CTRL_ATTR_MAX + 1];
224 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
225 struct nlattr *mcgrp;
228 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
229 genlmsg_attrlen(gnlh, 0), NULL);
230 if (!tb[CTRL_ATTR_MCAST_GROUPS])
233 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
234 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
235 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
236 nla_len(mcgrp), NULL);
237 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
238 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
239 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
241 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
243 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
251 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
252 const char *family, const char *group)
256 struct family_data res = { group, -ENOENT };
261 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
262 0, 0, CTRL_CMD_GETFAMILY, 0);
263 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
265 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
277 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
278 const char *ifname, u8 *addr)
282 os_memset(&ifr, 0, sizeof(ifr));
283 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
284 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
285 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
286 ifname, errno, strerror(errno));
290 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
291 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
292 ifname, ifr.ifr_hwaddr.sa_family);
295 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
301 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
302 const char *ifname, const u8 *addr)
306 os_memset(&ifr, 0, sizeof(ifr));
307 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
308 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
309 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
311 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
312 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
313 ifname, errno, strerror(errno));
322 static int wpa_driver_nl80211_send_oper_ifla(
323 struct wpa_driver_nl80211_data *drv,
324 int linkmode, int operstate)
328 struct ifinfomsg ifinfo;
335 os_memset(&req, 0, sizeof(req));
337 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
338 req.hdr.nlmsg_type = RTM_SETLINK;
339 req.hdr.nlmsg_flags = NLM_F_REQUEST;
340 req.hdr.nlmsg_seq = ++nl_seq;
341 req.hdr.nlmsg_pid = 0;
343 req.ifinfo.ifi_family = AF_UNSPEC;
344 req.ifinfo.ifi_type = 0;
345 req.ifinfo.ifi_index = drv->ifindex;
346 req.ifinfo.ifi_flags = 0;
347 req.ifinfo.ifi_change = 0;
349 if (linkmode != -1) {
350 rta = aliasing_hide_typecast(
351 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
353 rta->rta_type = IFLA_LINKMODE;
354 rta->rta_len = RTA_LENGTH(sizeof(char));
355 *((char *) RTA_DATA(rta)) = linkmode;
356 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
357 RTA_LENGTH(sizeof(char));
359 if (operstate != -1) {
360 rta = aliasing_hide_typecast(
361 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
363 rta->rta_type = IFLA_OPERSTATE;
364 rta->rta_len = RTA_LENGTH(sizeof(char));
365 *((char *) RTA_DATA(rta)) = operstate;
366 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
367 RTA_LENGTH(sizeof(char));
370 wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
371 linkmode, operstate);
373 ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
375 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
376 " %s (assume operstate is not supported)",
380 return ret < 0 ? -1 : 0;
384 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
386 struct wpa_driver_nl80211_data *drv = priv;
387 if (!drv->associated)
389 os_memcpy(bssid, drv->bssid, ETH_ALEN);
394 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
396 struct wpa_driver_nl80211_data *drv = priv;
397 if (!drv->associated)
399 os_memcpy(ssid, drv->ssid, drv->ssid_len);
400 return drv->ssid_len;
406 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
407 void *ctx, char *buf, size_t len,
410 union wpa_event_data event;
412 os_memset(&event, 0, sizeof(event));
413 if (len > sizeof(event.interface_status.ifname))
414 len = sizeof(event.interface_status.ifname) - 1;
415 os_memcpy(event.interface_status.ifname, buf, len);
416 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
417 EVENT_INTERFACE_ADDED;
419 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
421 event.interface_status.ifname,
422 del ? "removed" : "added");
424 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
431 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
435 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
438 struct ifinfomsg *ifi;
439 int attrlen, _nlmsg_len, rta_len;
444 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
446 attrlen = h->nlmsg_len - _nlmsg_len;
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 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
461 attr = RTA_NEXT(attr, attrlen);
468 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
469 int ifindex, struct nlmsghdr *h)
471 if (drv->ifindex == ifindex)
474 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
475 drv->ifindex = if_nametoindex(drv->ifname);
476 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
478 wpa_driver_nl80211_finish_drv_init(drv);
486 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
487 void *ctx, struct nlmsghdr *h,
490 struct ifinfomsg *ifi;
491 int attrlen, _nlmsg_len, rta_len;
492 struct rtattr * attr;
494 if (len < sizeof(*ifi))
499 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
500 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
505 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
507 drv->operstate, ifi->ifi_flags,
508 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
509 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
510 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
511 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
513 * Some drivers send the association event before the operup event--in
514 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
515 * fails. This will hit us when wpa_supplicant does not need to do
516 * IEEE 802.1X authentication
518 if (drv->operstate == 1 &&
519 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
520 !(ifi->ifi_flags & IFF_RUNNING))
521 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
523 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
525 attrlen = h->nlmsg_len - _nlmsg_len;
529 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
531 rta_len = RTA_ALIGN(sizeof(struct rtattr));
532 while (RTA_OK(attr, attrlen)) {
533 if (attr->rta_type == IFLA_IFNAME) {
534 wpa_driver_nl80211_event_link(
536 ((char *) attr) + rta_len,
537 attr->rta_len - rta_len, 0);
539 attr = RTA_NEXT(attr, attrlen);
544 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
545 void *ctx, struct nlmsghdr *h,
548 struct ifinfomsg *ifi;
549 int attrlen, _nlmsg_len, rta_len;
550 struct rtattr * attr;
552 if (len < sizeof(*ifi))
557 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
559 attrlen = h->nlmsg_len - _nlmsg_len;
563 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
565 rta_len = RTA_ALIGN(sizeof(struct rtattr));
566 while (RTA_OK(attr, attrlen)) {
567 if (attr->rta_type == IFLA_IFNAME) {
568 wpa_driver_nl80211_event_link(
570 ((char *) attr) + rta_len,
571 attr->rta_len - rta_len, 1);
573 attr = RTA_NEXT(attr, attrlen);
578 static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
583 struct sockaddr_nl from;
589 fromlen = sizeof(from);
590 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
591 (struct sockaddr *) &from, &fromlen);
593 if (errno != EINTR && errno != EAGAIN)
594 perror("recvfrom(netlink)");
598 h = (struct nlmsghdr *) buf;
599 while (left >= (int) sizeof(*h)) {
603 plen = len - sizeof(*h);
604 if (len > left || plen < 0) {
605 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
606 "len=%d left=%d plen=%d",
611 switch (h->nlmsg_type) {
613 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
617 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
622 len = NLMSG_ALIGN(len);
624 h = (struct nlmsghdr *) ((char *) h + len);
628 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
632 if (--max_events > 0) {
634 * Try to receive all events in one eloop call in order to
635 * limit race condition on cases where AssocInfo event, Assoc
636 * event, and EAPOL frames are received more or less at the
637 * same time. We want to process the event messages first
638 * before starting EAPOL processing.
647 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
648 const u8 *frame, size_t len)
650 const struct ieee80211_mgmt *mgmt;
651 union wpa_event_data event;
653 mgmt = (const struct ieee80211_mgmt *) frame;
654 if (len < 24 + sizeof(mgmt->u.auth)) {
655 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
660 os_memset(&event, 0, sizeof(event));
661 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
662 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
663 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
664 if (len > 24 + sizeof(mgmt->u.auth)) {
665 event.auth.ies = mgmt->u.auth.variable;
666 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
669 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
673 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
674 const u8 *frame, size_t len)
676 const struct ieee80211_mgmt *mgmt;
677 union wpa_event_data event;
680 mgmt = (const struct ieee80211_mgmt *) frame;
681 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
682 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
687 status = le_to_host16(mgmt->u.assoc_resp.status_code);
688 if (status != WLAN_STATUS_SUCCESS) {
689 os_memset(&event, 0, sizeof(event));
690 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
691 event.assoc_reject.resp_ies =
692 (u8 *) mgmt->u.assoc_resp.variable;
693 event.assoc_reject.resp_ies_len =
694 len - 24 - sizeof(mgmt->u.assoc_resp);
696 event.assoc_reject.status_code = status;
698 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
703 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
705 os_memset(&event, 0, sizeof(event));
706 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
707 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
708 event.assoc_info.resp_ies_len =
709 len - 24 - sizeof(mgmt->u.assoc_resp);
712 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
716 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
717 enum nl80211_commands cmd, struct nlattr *status,
718 struct nlattr *addr, struct nlattr *req_ie,
719 struct nlattr *resp_ie)
721 union wpa_event_data event;
723 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
725 * Avoid reporting two association events that would confuse
728 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
729 "when using userspace SME", cmd);
733 os_memset(&event, 0, sizeof(event));
734 if (cmd == NL80211_CMD_CONNECT &&
735 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
737 event.assoc_reject.resp_ies = nla_data(resp_ie);
738 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
740 event.assoc_reject.status_code = nla_get_u16(status);
741 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
747 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
750 event.assoc_info.req_ies = nla_data(req_ie);
751 event.assoc_info.req_ies_len = nla_len(req_ie);
754 event.assoc_info.resp_ies = nla_data(resp_ie);
755 event.assoc_info.resp_ies_len = nla_len(resp_ie);
758 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
762 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
763 enum nl80211_commands cmd, struct nlattr *addr)
765 union wpa_event_data event;
766 enum wpa_event_type ev;
768 if (nla_len(addr) != ETH_ALEN)
771 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
772 cmd, MAC2STR((u8 *) nla_data(addr)));
774 if (cmd == NL80211_CMD_AUTHENTICATE)
775 ev = EVENT_AUTH_TIMED_OUT;
776 else if (cmd == NL80211_CMD_ASSOCIATE)
777 ev = EVENT_ASSOC_TIMED_OUT;
781 os_memset(&event, 0, sizeof(event));
782 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
783 wpa_supplicant_event(drv->ctx, ev, &event);
787 static void mlme_event(struct wpa_driver_nl80211_data *drv,
788 enum nl80211_commands cmd, struct nlattr *frame,
789 struct nlattr *addr, struct nlattr *timed_out)
791 if (timed_out && addr) {
792 mlme_timeout_event(drv, cmd, addr);
797 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
802 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
803 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
804 nla_data(frame), nla_len(frame));
807 case NL80211_CMD_AUTHENTICATE:
808 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
810 case NL80211_CMD_ASSOCIATE:
811 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
813 case NL80211_CMD_DEAUTHENTICATE:
815 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
817 case NL80211_CMD_DISASSOCIATE:
819 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
827 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
830 union wpa_event_data data;
832 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
833 os_memset(&data, 0, sizeof(data));
834 if (tb[NL80211_ATTR_MAC]) {
835 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
836 nla_data(tb[NL80211_ATTR_MAC]),
837 nla_len(tb[NL80211_ATTR_MAC]));
838 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
840 if (tb[NL80211_ATTR_KEY_SEQ]) {
841 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
842 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
843 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
845 if (tb[NL80211_ATTR_KEY_TYPE]) {
846 enum nl80211_key_type key_type =
847 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
848 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
849 if (key_type == NL80211_KEYTYPE_PAIRWISE)
850 data.michael_mic_failure.unicast = 1;
852 data.michael_mic_failure.unicast = 1;
854 if (tb[NL80211_ATTR_KEY_IDX]) {
855 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
856 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
859 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
863 static int process_event(struct nl_msg *msg, void *arg)
865 struct wpa_driver_nl80211_data *drv = arg;
866 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
867 struct nlattr *tb[NL80211_ATTR_MAX + 1];
869 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
870 genlmsg_attrlen(gnlh, 0), NULL);
872 if (tb[NL80211_ATTR_IFINDEX]) {
873 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
874 if (ifindex != drv->ifindex) {
875 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
876 " for foreign interface (ifindex %d)",
882 if (drv->ap_scan_as_station &&
883 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
884 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
885 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
886 drv->ap_scan_as_station = 0;
890 case NL80211_CMD_TRIGGER_SCAN:
891 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
893 case NL80211_CMD_NEW_SCAN_RESULTS:
894 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
895 drv->scan_complete_events = 1;
896 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
898 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
900 case NL80211_CMD_SCAN_ABORTED:
901 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
903 * Need to indicate that scan results are available in order
904 * not to make wpa_supplicant stop its scanning.
906 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
908 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
910 case NL80211_CMD_AUTHENTICATE:
911 case NL80211_CMD_ASSOCIATE:
912 case NL80211_CMD_DEAUTHENTICATE:
913 case NL80211_CMD_DISASSOCIATE:
914 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
915 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
917 case NL80211_CMD_CONNECT:
918 case NL80211_CMD_ROAM:
919 mlme_event_connect(drv, gnlh->cmd,
920 tb[NL80211_ATTR_STATUS_CODE],
921 tb[NL80211_ATTR_MAC],
922 tb[NL80211_ATTR_REQ_IE],
923 tb[NL80211_ATTR_RESP_IE]);
925 case NL80211_CMD_DISCONNECT:
926 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
928 * Avoid reporting two disassociation events that could
929 * confuse the core code.
931 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
932 "event when using userspace SME");
936 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
938 case NL80211_CMD_MICHAEL_MIC_FAILURE:
939 mlme_event_michael_mic_failure(drv, tb);
942 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
943 "(cmd=%d)", gnlh->cmd);
951 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
955 struct wpa_driver_nl80211_data *drv = eloop_ctx;
957 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
959 cb = nl_cb_clone(drv->nl_cb);
962 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
963 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
964 nl_recvmsgs(drv->nl_handle_event, cb);
969 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
970 const char *ifname, int dev_up)
974 if (drv->ioctl_sock < 0)
977 os_memset(&ifr, 0, sizeof(ifr));
978 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
980 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
981 perror("ioctl[SIOCGIFFLAGS]");
982 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
988 if (ifr.ifr_flags & IFF_UP)
990 ifr.ifr_flags |= IFF_UP;
992 if (!(ifr.ifr_flags & IFF_UP))
994 ifr.ifr_flags &= ~IFF_UP;
997 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
998 perror("ioctl[SIOCSIFFLAGS]");
1007 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1008 * @priv: driver_nl80211 private data
1009 * @alpha2_arg: country to which to switch to
1010 * Returns: 0 on success, -1 on failure
1012 * This asks nl80211 to set the regulatory domain for given
1013 * country ISO / IEC alpha2.
1015 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1017 struct wpa_driver_nl80211_data *drv = priv;
1021 msg = nlmsg_alloc();
1025 alpha2[0] = alpha2_arg[0];
1026 alpha2[1] = alpha2_arg[1];
1029 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1030 0, NL80211_CMD_REQ_SET_REG, 0);
1032 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1033 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1042 struct wiphy_info_data {
1046 int connect_supported;
1050 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1052 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1053 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1054 struct wiphy_info_data *info = arg;
1056 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1057 genlmsg_attrlen(gnlh, 0), NULL);
1059 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1060 info->max_scan_ssids =
1061 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1063 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1064 struct nlattr *nl_mode;
1066 nla_for_each_nested(nl_mode,
1067 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1068 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1069 info->ap_supported = 1;
1075 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1076 struct nlattr *nl_cmd;
1079 nla_for_each_nested(nl_cmd,
1080 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1081 u32 cmd = nla_get_u32(nl_cmd);
1082 if (cmd == NL80211_CMD_AUTHENTICATE)
1083 info->auth_supported = 1;
1084 else if (cmd == NL80211_CMD_CONNECT)
1085 info->connect_supported = 1;
1093 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1094 struct wiphy_info_data *info)
1098 os_memset(info, 0, sizeof(*info));
1099 msg = nlmsg_alloc();
1103 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1104 0, NL80211_CMD_GET_WIPHY, 0);
1106 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1108 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1117 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1119 struct wiphy_info_data info;
1120 if (wpa_driver_nl80211_get_info(drv, &info))
1122 drv->has_capability = 1;
1123 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1124 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1125 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1126 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1127 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1128 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1129 WPA_DRIVER_CAPA_ENC_WEP104 |
1130 WPA_DRIVER_CAPA_ENC_TKIP |
1131 WPA_DRIVER_CAPA_ENC_CCMP;
1133 drv->capa.max_scan_ssids = info.max_scan_ssids;
1134 if (info.ap_supported)
1135 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1137 if (info.auth_supported)
1138 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1139 else if (!info.connect_supported) {
1140 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1141 "authentication/association or connect commands");
1145 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1149 #endif /* HOSTAPD */
1152 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1157 /* Initialize generic netlink and nl80211 */
1159 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1160 if (drv->nl_cb == NULL) {
1161 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1166 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1167 if (drv->nl_handle == NULL) {
1168 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1173 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1174 if (drv->nl_handle_event == NULL) {
1175 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1176 "callbacks (event)");
1180 if (genl_connect(drv->nl_handle)) {
1181 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1186 if (genl_connect(drv->nl_handle_event)) {
1187 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1192 #ifdef CONFIG_LIBNL20
1193 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1194 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1198 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1200 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1201 "netlink cache (event)");
1204 #else /* CONFIG_LIBNL20 */
1205 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1206 if (drv->nl_cache == NULL) {
1207 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1211 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1212 if (drv->nl_cache_event == NULL) {
1213 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1214 "netlink cache (event)");
1217 #endif /* CONFIG_LIBNL20 */
1219 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1220 if (drv->nl80211 == NULL) {
1221 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1226 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1228 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1230 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1231 "membership for scan events: %d (%s)",
1232 ret, strerror(-ret));
1236 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1238 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1240 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1241 "membership for mlme events: %d (%s)",
1242 ret, strerror(-ret));
1246 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1247 wpa_driver_nl80211_event_receive, drv, ctx);
1252 nl_cache_free(drv->nl_cache_event);
1254 nl_cache_free(drv->nl_cache);
1256 nl_handle_destroy(drv->nl_handle_event);
1258 nl_handle_destroy(drv->nl_handle);
1260 nl_cb_put(drv->nl_cb);
1266 static int wpa_driver_nl80211_init_link_events(
1267 struct wpa_driver_nl80211_data *drv)
1273 struct sockaddr_nl local;
1275 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1277 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1281 os_memset(&local, 0, sizeof(local));
1282 local.nl_family = AF_NETLINK;
1283 local.nl_groups = RTMGRP_LINK;
1284 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1285 perror("bind(netlink)");
1290 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
1292 drv->link_event_sock = s;
1295 #endif /* HOSTAPD */
1300 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1301 * @ctx: context to be used when calling wpa_supplicant functions,
1302 * e.g., wpa_supplicant_event()
1303 * @ifname: interface name, e.g., wlan0
1304 * Returns: Pointer to private data, %NULL on failure
1306 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1308 struct wpa_driver_nl80211_data *drv;
1310 drv = os_zalloc(sizeof(*drv));
1314 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1315 drv->monitor_ifidx = -1;
1316 drv->monitor_sock = -1;
1317 drv->link_event_sock = -1;
1318 drv->ioctl_sock = -1;
1320 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1325 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1326 if (drv->ioctl_sock < 0) {
1327 perror("socket(PF_INET,SOCK_DGRAM)");
1331 if (wpa_driver_nl80211_init_link_events(drv) ||
1332 wpa_driver_nl80211_finish_drv_init(drv))
1338 if (drv->link_event_sock >= 0) {
1339 eloop_unregister_read_sock(drv->link_event_sock);
1340 close(drv->link_event_sock);
1342 if (drv->ioctl_sock >= 0)
1343 close(drv->ioctl_sock);
1345 genl_family_put(drv->nl80211);
1346 nl_cache_free(drv->nl_cache);
1347 nl_handle_destroy(drv->nl_handle);
1348 nl_cb_put(drv->nl_cb);
1356 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1358 drv->ifindex = if_nametoindex(drv->ifname);
1361 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1362 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1363 "use managed mode");
1366 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1367 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1372 if (wpa_driver_nl80211_capa(drv))
1375 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1376 #endif /* HOSTAPD */
1383 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1385 struct i802_bss *bss, *prev;
1386 bss = drv->bss.next;
1393 #endif /* HOSTAPD */
1396 #if defined(CONFIG_AP) || defined(HOSTAPD)
1397 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1401 msg = nlmsg_alloc();
1405 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1406 0, NL80211_CMD_DEL_BEACON, 0);
1407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1409 return send_and_recv_msgs(drv, msg, NULL, NULL);
1413 #endif /* CONFIG_AP || HOSTAPD */
1417 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1418 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1420 * Shut down driver interface and processing of driver events. Free
1421 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1423 static void wpa_driver_nl80211_deinit(void *priv)
1425 struct wpa_driver_nl80211_data *drv = priv;
1427 #if defined(CONFIG_AP) || defined(HOSTAPD)
1428 nl80211_remove_monitor_interface(drv);
1429 if (drv->monitor_sock >= 0) {
1430 eloop_unregister_read_sock(drv->monitor_sock);
1431 close(drv->monitor_sock);
1434 if (drv->nlmode == NL80211_IFTYPE_AP)
1435 wpa_driver_nl80211_del_beacon(drv);
1436 #endif /* CONFIG_AP || HOSTAPD */
1439 if (drv->last_freq_ht) {
1440 /* Clear HT flags from the driver */
1441 struct hostapd_freq_params freq;
1442 os_memset(&freq, 0, sizeof(freq));
1443 freq.freq = drv->last_freq;
1444 i802_set_freq(priv, &freq);
1447 if (drv->eapol_sock >= 0) {
1448 eloop_unregister_read_sock(drv->eapol_sock);
1449 close(drv->eapol_sock);
1452 if (drv->if_indices != drv->default_if_indices)
1453 os_free(drv->if_indices);
1455 wpa_driver_nl80211_free_bss(drv);
1458 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1460 if (drv->link_event_sock >= 0) {
1461 eloop_unregister_read_sock(drv->link_event_sock);
1462 close(drv->link_event_sock);
1464 #endif /* HOSTAPD */
1466 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1468 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1469 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1471 if (drv->ioctl_sock >= 0)
1472 close(drv->ioctl_sock);
1474 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1475 genl_family_put(drv->nl80211);
1476 nl_cache_free(drv->nl_cache);
1477 nl_cache_free(drv->nl_cache_event);
1478 nl_handle_destroy(drv->nl_handle);
1479 nl_handle_destroy(drv->nl_handle_event);
1480 nl_cb_put(drv->nl_cb);
1487 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1488 * @eloop_ctx: Driver private data
1489 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1491 * This function can be used as registered timeout when starting a scan to
1492 * generate a scan completed event if the driver does not report this.
1494 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1496 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1497 if (drv->ap_scan_as_station) {
1498 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1499 drv->ap_scan_as_station = 0;
1501 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1502 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1507 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1508 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1509 * @params: Scan parameters
1510 * Returns: 0 on success, -1 on failure
1512 static int wpa_driver_nl80211_scan(void *priv,
1513 struct wpa_driver_scan_params *params)
1515 struct wpa_driver_nl80211_data *drv = priv;
1516 int ret = 0, timeout;
1517 struct nl_msg *msg, *ssids, *freqs;
1520 msg = nlmsg_alloc();
1521 ssids = nlmsg_alloc();
1522 freqs = nlmsg_alloc();
1523 if (!msg || !ssids || !freqs) {
1530 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1531 NL80211_CMD_TRIGGER_SCAN, 0);
1533 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1535 for (i = 0; i < params->num_ssids; i++) {
1536 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1537 params->ssids[i].ssid);
1539 if (params->num_ssids)
1540 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1542 if (params->extra_ies) {
1543 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1547 if (params->freqs) {
1548 for (i = 0; params->freqs[i]; i++)
1549 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1550 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1553 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1556 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1557 "(%s)", ret, strerror(-ret));
1559 if (drv->nlmode == NL80211_IFTYPE_AP) {
1561 * mac80211 does not allow scan requests in AP mode, so
1562 * try to do this in station mode.
1564 if (wpa_driver_nl80211_set_mode(drv,
1565 IEEE80211_MODE_INFRA))
1566 goto nla_put_failure;
1568 if (wpa_driver_nl80211_scan(drv, params)) {
1569 wpa_driver_nl80211_set_mode(drv,
1571 goto nla_put_failure;
1574 /* Restore AP mode when processing scan results */
1575 drv->ap_scan_as_station = 1;
1578 goto nla_put_failure;
1580 goto nla_put_failure;
1581 #endif /* HOSTAPD */
1584 /* Not all drivers generate "scan completed" wireless event, so try to
1585 * read results after a timeout. */
1587 if (drv->scan_complete_events) {
1589 * The driver seems to deliver events to notify when scan is
1590 * complete, so use longer timeout to avoid race conditions
1591 * with scanning and following association request.
1595 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1596 "seconds", ret, timeout);
1597 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1598 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1609 static int bss_info_handler(struct nl_msg *msg, void *arg)
1611 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1612 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1613 struct nlattr *bss[NL80211_BSS_MAX + 1];
1614 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1615 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1616 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1617 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1618 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1619 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1620 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1621 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1622 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1623 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1625 struct wpa_scan_results *res = arg;
1626 struct wpa_scan_res **tmp;
1627 struct wpa_scan_res *r;
1631 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1632 genlmsg_attrlen(gnlh, 0), NULL);
1633 if (!tb[NL80211_ATTR_BSS])
1635 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1638 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1639 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1640 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1646 r = os_zalloc(sizeof(*r) + ie_len);
1649 if (bss[NL80211_BSS_BSSID])
1650 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1652 if (bss[NL80211_BSS_FREQUENCY])
1653 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1654 if (bss[NL80211_BSS_BEACON_INTERVAL])
1655 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1656 if (bss[NL80211_BSS_CAPABILITY])
1657 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1658 r->flags |= WPA_SCAN_NOISE_INVALID;
1659 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1660 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1661 r->level /= 100; /* mBm to dBm */
1662 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1663 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1664 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1665 r->flags |= WPA_SCAN_LEVEL_INVALID;
1667 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1668 if (bss[NL80211_BSS_TSF])
1669 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1670 if (bss[NL80211_BSS_SEEN_MS_AGO])
1671 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1674 os_memcpy(r + 1, ie, ie_len);
1676 tmp = os_realloc(res->res,
1677 (res->num + 1) * sizeof(struct wpa_scan_res *));
1682 tmp[res->num++] = r;
1690 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1691 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1692 * Returns: Scan results on success, -1 on failure
1694 static struct wpa_scan_results *
1695 wpa_driver_nl80211_get_scan_results(void *priv)
1697 struct wpa_driver_nl80211_data *drv = priv;
1699 struct wpa_scan_results *res;
1702 res = os_zalloc(sizeof(*res));
1705 msg = nlmsg_alloc();
1707 goto nla_put_failure;
1709 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1710 NL80211_CMD_GET_SCAN, 0);
1711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1713 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1716 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1717 (unsigned long) res->num);
1720 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1721 "(%s)", ret, strerror(-ret));
1724 wpa_scan_results_free(res);
1729 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1730 wpa_alg alg, const u8 *addr, int key_idx,
1732 const u8 *seq, size_t seq_len,
1733 const u8 *key, size_t key_len)
1735 struct wpa_driver_nl80211_data *drv = priv;
1736 int ifindex = if_nametoindex(ifname);
1740 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1741 "set_tx=%d seq_len=%lu key_len=%lu",
1742 __func__, ifindex, alg, addr, key_idx, set_tx,
1743 (unsigned long) seq_len, (unsigned long) key_len);
1745 msg = nlmsg_alloc();
1749 if (alg == WPA_ALG_NONE) {
1750 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1751 0, NL80211_CMD_DEL_KEY, 0);
1753 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1754 0, NL80211_CMD_NEW_KEY, 0);
1755 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1759 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1760 WLAN_CIPHER_SUITE_WEP40);
1762 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1763 WLAN_CIPHER_SUITE_WEP104);
1766 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1767 WLAN_CIPHER_SUITE_TKIP);
1770 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1771 WLAN_CIPHER_SUITE_CCMP);
1774 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1775 WLAN_CIPHER_SUITE_AES_CMAC);
1778 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1779 "algorithm %d", __func__, alg);
1786 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1788 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1790 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1791 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1793 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1794 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1796 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1797 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1800 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1801 ret, strerror(-ret));
1804 * If we failed or don't need to set the default TX key (below),
1807 if (ret || !set_tx || alg == WPA_ALG_NONE)
1809 #ifdef HOSTAPD /* FIX: is this needed? */
1812 #endif /* HOSTAPD */
1814 msg = nlmsg_alloc();
1818 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1819 0, NL80211_CMD_SET_KEY, 0);
1820 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1821 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1822 if (alg == WPA_ALG_IGTK)
1823 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1825 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1827 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1831 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1832 "err=%d %s)", ret, strerror(-ret));
1840 static int nl_add_key(struct nl_msg *msg, wpa_alg alg,
1841 int key_idx, int defkey,
1842 const u8 *seq, size_t seq_len,
1843 const u8 *key, size_t key_len)
1845 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1849 if (defkey && alg == WPA_ALG_IGTK)
1850 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1852 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1854 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1859 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1860 WLAN_CIPHER_SUITE_WEP40);
1862 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1863 WLAN_CIPHER_SUITE_WEP104);
1866 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1869 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1872 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1873 WLAN_CIPHER_SUITE_AES_CMAC);
1876 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1877 "algorithm %d", __func__, alg);
1882 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1884 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1886 nla_nest_end(msg, key_attr);
1894 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1898 struct nlattr *nl_keys, *nl_key;
1900 for (i = 0; i < 4; i++) {
1901 if (!params->wep_key[i])
1909 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1911 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1913 goto nla_put_failure;
1915 for (i = 0; i < 4; i++) {
1916 if (!params->wep_key[i])
1919 nl_key = nla_nest_start(msg, i);
1921 goto nla_put_failure;
1923 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1924 params->wep_key[i]);
1925 if (params->wep_key_len[i] == 5)
1926 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1927 WLAN_CIPHER_SUITE_WEP40);
1929 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1930 WLAN_CIPHER_SUITE_WEP104);
1932 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1934 if (i == params->wep_tx_keyidx)
1935 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1937 nla_nest_end(msg, nl_key);
1939 nla_nest_end(msg, nl_keys);
1948 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1949 const u8 *addr, int cmd, u16 reason_code)
1954 msg = nlmsg_alloc();
1958 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1960 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1961 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1962 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1964 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1967 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1968 "(%s)", ret, strerror(-ret));
1969 goto nla_put_failure;
1979 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1980 const u8 *addr, int reason_code)
1982 wpa_printf(MSG_DEBUG, "%s", __func__);
1983 drv->associated = 0;
1984 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1989 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1992 struct wpa_driver_nl80211_data *drv = priv;
1993 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1994 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1995 wpa_printf(MSG_DEBUG, "%s", __func__);
1996 drv->associated = 0;
1997 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2002 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2005 struct wpa_driver_nl80211_data *drv = priv;
2006 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2007 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2008 wpa_printf(MSG_DEBUG, "%s", __func__);
2009 drv->associated = 0;
2010 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2015 static int wpa_driver_nl80211_authenticate(
2016 void *priv, struct wpa_driver_auth_params *params)
2018 struct wpa_driver_nl80211_data *drv = priv;
2021 enum nl80211_auth_type type;
2024 drv->associated = 0;
2026 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2030 msg = nlmsg_alloc();
2034 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2037 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2038 NL80211_CMD_AUTHENTICATE, 0);
2040 for (i = 0; i < 4; i++) {
2041 if (!params->wep_key[i])
2043 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2045 i == params->wep_tx_keyidx, NULL, 0,
2047 params->wep_key_len[i]);
2048 if (params->wep_tx_keyidx != i)
2050 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2051 params->wep_key[i], params->wep_key_len[i])) {
2057 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2058 if (params->bssid) {
2059 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2060 MAC2STR(params->bssid));
2061 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2064 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2065 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2068 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2069 params->ssid, params->ssid_len);
2070 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2073 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2075 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2077 * TODO: if multiple auth_alg options enabled, try them one by one if
2078 * the AP rejects authentication due to unknown auth alg
2080 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2081 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2082 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2083 type = NL80211_AUTHTYPE_SHARED_KEY;
2084 else if (params->auth_alg & AUTH_ALG_LEAP)
2085 type = NL80211_AUTHTYPE_NETWORK_EAP;
2086 else if (params->auth_alg & AUTH_ALG_FT)
2087 type = NL80211_AUTHTYPE_FT;
2089 goto nla_put_failure;
2090 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2091 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2093 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2096 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2097 "(%s)", ret, strerror(-ret));
2099 if (ret == -EALREADY && count == 1 && params->bssid) {
2101 * mac80211 does not currently accept new
2102 * authentication if we are already authenticated. As a
2103 * workaround, force deauthentication and try again.
2105 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2106 "after forced deauthentication");
2107 wpa_driver_nl80211_deauthenticate(
2109 WLAN_REASON_PREV_AUTH_NOT_VALID);
2113 goto nla_put_failure;
2116 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2125 #if defined(CONFIG_AP) || defined(HOSTAPD)
2127 struct phy_info_arg {
2129 struct hostapd_hw_modes *modes;
2132 static int phy_info_handler(struct nl_msg *msg, void *arg)
2134 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2135 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2136 struct phy_info_arg *phy_info = arg;
2138 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2140 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2141 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2142 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2143 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2144 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2145 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2146 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2147 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2150 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2151 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2152 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2153 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2156 struct nlattr *nl_band;
2157 struct nlattr *nl_freq;
2158 struct nlattr *nl_rate;
2159 int rem_band, rem_freq, rem_rate;
2160 struct hostapd_hw_modes *mode;
2161 int idx, mode_is_set;
2163 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2164 genlmsg_attrlen(gnlh, 0), NULL);
2166 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2169 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2170 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2173 phy_info->modes = mode;
2177 mode = &phy_info->modes[*(phy_info->num_modes)];
2178 memset(mode, 0, sizeof(*mode));
2179 *(phy_info->num_modes) += 1;
2181 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2182 nla_len(nl_band), NULL);
2184 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2185 mode->ht_capab = nla_get_u16(
2186 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2189 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2190 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2192 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2193 os_memcpy(mode->mcs_set, mcs, 16);
2196 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2197 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2198 nla_len(nl_freq), freq_policy);
2199 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2201 mode->num_channels++;
2204 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
2205 if (!mode->channels)
2210 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2211 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2212 nla_len(nl_freq), freq_policy);
2213 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2216 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2217 mode->channels[idx].flag = 0;
2220 /* crude heuristic */
2221 if (mode->channels[idx].freq < 4000)
2222 mode->mode = HOSTAPD_MODE_IEEE80211B;
2224 mode->mode = HOSTAPD_MODE_IEEE80211A;
2228 /* crude heuristic */
2229 if (mode->channels[idx].freq < 4000)
2230 if (mode->channels[idx].freq == 2484)
2231 mode->channels[idx].chan = 14;
2233 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2235 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2237 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2238 mode->channels[idx].flag |=
2239 HOSTAPD_CHAN_DISABLED;
2240 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2241 mode->channels[idx].flag |=
2242 HOSTAPD_CHAN_PASSIVE_SCAN;
2243 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2244 mode->channels[idx].flag |=
2245 HOSTAPD_CHAN_NO_IBSS;
2246 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2247 mode->channels[idx].flag |=
2250 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2251 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2252 mode->channels[idx].max_tx_power =
2253 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2258 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2259 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2260 nla_len(nl_rate), rate_policy);
2261 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2266 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
2272 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2273 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2274 nla_len(nl_rate), rate_policy);
2275 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2277 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2279 /* crude heuristic */
2280 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2281 mode->rates[idx].rate > 200)
2282 mode->mode = HOSTAPD_MODE_IEEE80211G;
2284 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
2285 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2294 static struct hostapd_hw_modes *
2295 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2298 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2299 int i, mode11g_idx = -1;
2301 /* If only 802.11g mode is included, use it to construct matching
2302 * 802.11b mode data. */
2304 for (m = 0; m < *num_modes; m++) {
2305 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2306 return modes; /* 802.11b already included */
2307 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2311 if (mode11g_idx < 0)
2312 return modes; /* 2.4 GHz band not supported at all */
2314 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2316 return modes; /* Could not add 802.11b mode */
2318 mode = &nmodes[*num_modes];
2319 os_memset(mode, 0, sizeof(*mode));
2323 mode->mode = HOSTAPD_MODE_IEEE80211B;
2325 mode11g = &modes[mode11g_idx];
2326 mode->num_channels = mode11g->num_channels;
2327 mode->channels = os_malloc(mode11g->num_channels *
2328 sizeof(struct hostapd_channel_data));
2329 if (mode->channels == NULL) {
2331 return modes; /* Could not add 802.11b mode */
2333 os_memcpy(mode->channels, mode11g->channels,
2334 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2336 mode->num_rates = 0;
2337 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2338 if (mode->rates == NULL) {
2339 os_free(mode->channels);
2341 return modes; /* Could not add 802.11b mode */
2344 for (i = 0; i < mode11g->num_rates; i++) {
2345 if (mode11g->rates[i].rate > 110 ||
2346 mode11g->rates[i].flags &
2347 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2349 mode->rates[mode->num_rates] = mode11g->rates[i];
2351 if (mode->num_rates == 4)
2355 if (mode->num_rates == 0) {
2356 os_free(mode->channels);
2357 os_free(mode->rates);
2359 return modes; /* No 802.11b rates */
2362 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2369 static struct hostapd_hw_modes *
2370 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2372 struct wpa_driver_nl80211_data *drv = priv;
2374 struct phy_info_arg result = {
2375 .num_modes = num_modes,
2382 msg = nlmsg_alloc();
2386 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2387 0, NL80211_CMD_GET_WIPHY, 0);
2389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2391 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2392 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2398 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2399 const void *data, size_t len,
2403 0x00, 0x00, /* radiotap version */
2404 0x0e, 0x00, /* radiotap length */
2405 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2406 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2408 0x00, 0x00, /* RX and TX flags to indicate that */
2409 0x00, 0x00, /* this is the injected frame directly */
2411 struct iovec iov[2] = {
2413 .iov_base = &rtap_hdr,
2414 .iov_len = sizeof(rtap_hdr),
2417 .iov_base = (void *) data,
2421 struct msghdr msg = {
2426 .msg_control = NULL,
2427 .msg_controllen = 0,
2432 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2434 return sendmsg(drv->monitor_sock, &msg, 0);
2438 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2441 struct wpa_driver_nl80211_data *drv = priv;
2442 struct ieee80211_mgmt *mgmt;
2446 mgmt = (struct ieee80211_mgmt *) data;
2447 fc = le_to_host16(mgmt->frame_control);
2449 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2450 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2452 * Only one of the authentication frame types is encrypted.
2453 * In order for static WEP encryption to work properly (i.e.,
2454 * to not encrypt the frame), we need to tell mac80211 about
2455 * the frames that must not be encrypted.
2457 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2458 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2459 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2463 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2466 #endif /* CONFIG_AP || HOSTAPD */
2469 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2470 const u8 *head, size_t head_len,
2471 const u8 *tail, size_t tail_len,
2472 int dtim_period, int beacon_int)
2474 struct wpa_driver_nl80211_data *drv = priv;
2476 u8 cmd = NL80211_CMD_NEW_BEACON;
2479 int ifindex = if_nametoindex(ifname);
2481 struct i802_bss *bss;
2483 bss = get_bss(drv, ifindex);
2486 beacon_set = bss->beacon_set;
2488 beacon_set = drv->beacon_set;
2489 #endif /* HOSTAPD */
2491 msg = nlmsg_alloc();
2495 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2498 cmd = NL80211_CMD_SET_BEACON;
2500 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2502 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2503 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2504 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2505 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2506 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2508 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2510 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2511 ret, strerror(-ret));
2514 bss->beacon_set = 1;
2516 drv->beacon_set = 1;
2517 #endif /* HOSTAPD */
2525 #if defined(CONFIG_AP) || defined(HOSTAPD)
2527 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2528 int freq, int ht_enabled,
2529 int sec_channel_offset)
2534 msg = nlmsg_alloc();
2538 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2539 NL80211_CMD_SET_WIPHY, 0);
2541 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2542 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2544 switch (sec_channel_offset) {
2546 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2547 NL80211_CHAN_HT40MINUS);
2550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2551 NL80211_CHAN_HT40PLUS);
2554 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2560 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2563 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2564 "%d (%s)", freq, ret, strerror(-ret));
2570 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2571 struct hostapd_sta_add_params *params)
2573 struct wpa_driver_nl80211_data *drv = priv;
2577 msg = nlmsg_alloc();
2581 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2582 0, NL80211_CMD_NEW_STATION, 0);
2584 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2585 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2586 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2587 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2588 params->supp_rates);
2589 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2590 params->listen_interval);
2592 #ifdef CONFIG_IEEE80211N
2593 if (params->ht_capabilities) {
2594 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2595 params->ht_capabilities->length,
2596 ¶ms->ht_capabilities->data);
2598 #endif /* CONFIG_IEEE80211N */
2600 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2602 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2603 "result: %d (%s)", ret, strerror(-ret));
2611 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2613 struct wpa_driver_nl80211_data *drv = priv;
2617 msg = nlmsg_alloc();
2621 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2622 0, NL80211_CMD_DEL_STATION, 0);
2624 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2625 if_nametoindex(drv->ifname));
2626 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2628 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2637 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2643 /* stop listening for EAPOL on this interface */
2644 del_ifidx(drv, ifidx);
2645 #endif /* HOSTAPD */
2647 msg = nlmsg_alloc();
2649 goto nla_put_failure;
2651 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2652 0, NL80211_CMD_DEL_INTERFACE, 0);
2653 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2655 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2658 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2663 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2665 enum nl80211_iftype iftype,
2668 struct nl_msg *msg, *flags = NULL;
2672 msg = nlmsg_alloc();
2676 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2677 0, NL80211_CMD_NEW_INTERFACE, 0);
2678 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2679 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2680 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2682 if (iftype == NL80211_IFTYPE_MONITOR) {
2685 flags = nlmsg_alloc();
2687 goto nla_put_failure;
2689 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2691 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2696 goto nla_put_failure;
2699 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2702 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2703 ifname, ret, strerror(-ret));
2707 ifidx = if_nametoindex(ifname);
2713 /* start listening for EAPOL on this interface */
2714 add_ifidx(drv, ifidx);
2716 if (addr && iftype == NL80211_IFTYPE_AP &&
2717 set_ifhwaddr(drv, ifname, addr)) {
2718 nl80211_remove_iface(drv, ifidx);
2721 #endif /* HOSTAPD */
2725 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2726 const char *ifname, enum nl80211_iftype iftype,
2731 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2733 /* if error occured and interface exists already */
2734 if (ret == -ENFILE && if_nametoindex(ifname)) {
2735 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2737 /* Try to remove the interface that was already there. */
2738 nl80211_remove_iface(drv, if_nametoindex(ifname));
2740 /* Try to create the interface again */
2741 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2747 #endif /* CONFIG_AP || HOSTAPD */
2751 void ap_tx_status(void *ctx, const u8 *addr,
2752 const u8 *buf, size_t len, int ack);
2753 void ap_rx_from_unknown_sta(void *ctx, struct ieee80211_hdr *hdr, size_t len);
2754 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2755 struct hostapd_frame_info *fi);
2756 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2758 #endif /* CONFIG_AP */
2760 #if defined(CONFIG_AP) || defined(HOSTAPD)
2762 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2764 struct ieee80211_hdr *hdr;
2765 u16 fc, type, stype;
2767 hdr = (struct ieee80211_hdr *) buf;
2768 fc = le_to_host16(hdr->frame_control);
2770 type = WLAN_FC_GET_TYPE(fc);
2771 stype = WLAN_FC_GET_STYPE(fc);
2774 case WLAN_FC_TYPE_MGMT:
2775 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2776 ok ? "ACK" : "fail");
2778 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2780 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
2781 #endif /* HOSTAPD */
2783 case WLAN_FC_TYPE_CTRL:
2784 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2785 ok ? "ACK" : "fail");
2787 case WLAN_FC_TYPE_DATA:
2789 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2791 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
2792 #endif /* HOSTAPD */
2795 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2802 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2803 struct ieee80211_hdr *hdr, size_t len)
2806 hostapd_rx_from_unknown_sta(drv->ctx, hdr, len);
2808 ap_rx_from_unknown_sta(drv->ctx, hdr, len);
2809 #endif /* HOSTAPD */
2813 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2814 u8 *buf, size_t len,
2815 struct hostapd_frame_info *hfi)
2817 struct ieee80211_hdr *hdr;
2820 hdr = (struct ieee80211_hdr *) buf;
2821 fc = le_to_host16(hdr->frame_control);
2822 stype = WLAN_FC_GET_STYPE(fc);
2824 switch (WLAN_FC_GET_TYPE(fc)) {
2825 case WLAN_FC_TYPE_MGMT:
2826 if (stype != WLAN_FC_STYPE_BEACON &&
2827 stype != WLAN_FC_STYPE_PROBE_REQ)
2828 wpa_printf(MSG_MSGDUMP, "MGMT");
2830 hostapd_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2832 ap_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2833 #endif /* HOSTAPD */
2835 case WLAN_FC_TYPE_CTRL:
2836 /* can only get here with PS-Poll frames */
2837 wpa_printf(MSG_DEBUG, "CTRL");
2838 from_unknown_sta(drv, hdr, len);
2840 case WLAN_FC_TYPE_DATA:
2841 from_unknown_sta(drv, hdr, len);
2847 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2849 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2851 unsigned char buf[3000];
2852 struct ieee80211_radiotap_iterator iter;
2854 struct hostapd_frame_info hfi;
2855 int injected = 0, failed = 0, rxflags = 0;
2857 len = recv(sock, buf, sizeof(buf), 0);
2863 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2864 printf("received invalid radiotap frame\n");
2868 memset(&hfi, 0, sizeof(hfi));
2871 ret = ieee80211_radiotap_iterator_next(&iter);
2875 printf("received invalid radiotap frame (%d)\n", ret);
2878 switch (iter.this_arg_index) {
2879 case IEEE80211_RADIOTAP_FLAGS:
2880 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2883 case IEEE80211_RADIOTAP_RX_FLAGS:
2886 case IEEE80211_RADIOTAP_TX_FLAGS:
2888 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2889 IEEE80211_RADIOTAP_F_TX_FAIL;
2891 case IEEE80211_RADIOTAP_DATA_RETRIES:
2893 case IEEE80211_RADIOTAP_CHANNEL:
2894 /* TODO convert from freq/flags to channel number
2899 case IEEE80211_RADIOTAP_RATE:
2900 hfi.datarate = *iter.this_arg * 5;
2902 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2903 hfi.ssi_signal = *iter.this_arg;
2908 if (rxflags && injected)
2912 handle_frame(drv, buf + iter.max_length,
2913 len - iter.max_length, &hfi);
2915 handle_tx_callback(drv->ctx, buf + iter.max_length,
2916 len - iter.max_length, !failed);
2921 * we post-process the filter code later and rewrite
2922 * this to the offset to the last instruction
2927 static struct sock_filter msock_filter_insns[] = {
2929 * do a little-endian load of the radiotap length field
2931 /* load lower byte into A */
2932 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2933 /* put it into X (== index register) */
2934 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2935 /* load upper byte into A */
2936 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2937 /* left-shift it by 8 */
2938 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2940 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2941 /* put result into X */
2942 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2945 * Allow management frames through, this also gives us those
2946 * management frames that we sent ourselves with status
2948 /* load the lower byte of the IEEE 802.11 frame control field */
2949 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2950 /* mask off frame type and version */
2951 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2952 /* accept frame if it's both 0, fall through otherwise */
2953 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2956 * TODO: add a bit to radiotap RX flags that indicates
2957 * that the sending station is not associated, then
2958 * add a filter here that filters on our DA and that flag
2959 * to allow us to deauth frames to that bad station.
2961 * Not a regression -- we didn't do it before either.
2966 * drop non-data frames, WDS frames
2968 /* load the lower byte of the frame control field */
2969 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2970 /* mask off QoS bit */
2971 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2972 /* drop non-data frames */
2973 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2974 /* load the upper byte of the frame control field */
2975 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2976 /* mask off toDS/fromDS */
2977 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2978 /* drop WDS frames */
2979 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2983 * add header length to index
2985 /* load the lower byte of the frame control field */
2986 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2987 /* mask off QoS bit */
2988 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2989 /* right shift it by 6 to give 0 or 2 */
2990 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2991 /* add data frame header length */
2992 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2993 /* add index, was start of 802.11 header */
2994 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2995 /* move to index, now start of LL header */
2996 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2999 * Accept empty data frames, we use those for
3002 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3003 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3006 * Accept EAPOL frames
3008 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3009 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3010 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3011 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3013 /* keep these last two statements or change the code below */
3014 /* return 0 == "DROP" */
3015 BPF_STMT(BPF_RET | BPF_K, 0),
3016 /* return ~0 == "keep all" */
3017 BPF_STMT(BPF_RET | BPF_K, ~0),
3020 static struct sock_fprog msock_filter = {
3021 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3022 .filter = msock_filter_insns,
3026 static int add_monitor_filter(int s)
3030 /* rewrite all PASS/FAIL jump offsets */
3031 for (idx = 0; idx < msock_filter.len; idx++) {
3032 struct sock_filter *insn = &msock_filter_insns[idx];
3034 if (BPF_CLASS(insn->code) == BPF_JMP) {
3035 if (insn->code == (BPF_JMP|BPF_JA)) {
3036 if (insn->k == PASS)
3037 insn->k = msock_filter.len - idx - 2;
3038 else if (insn->k == FAIL)
3039 insn->k = msock_filter.len - idx - 3;
3042 if (insn->jt == PASS)
3043 insn->jt = msock_filter.len - idx - 2;
3044 else if (insn->jt == FAIL)
3045 insn->jt = msock_filter.len - idx - 3;
3047 if (insn->jf == PASS)
3048 insn->jf = msock_filter.len - idx - 2;
3049 else if (insn->jf == FAIL)
3050 insn->jf = msock_filter.len - idx - 3;
3054 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3055 &msock_filter, sizeof(msock_filter))) {
3056 perror("SO_ATTACH_FILTER");
3064 static void nl80211_remove_monitor_interface(
3065 struct wpa_driver_nl80211_data *drv)
3067 if (drv->monitor_ifidx >= 0) {
3068 nl80211_remove_iface(drv, drv->monitor_ifidx);
3069 drv->monitor_ifidx = -1;
3075 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3078 struct sockaddr_ll ll;
3082 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3083 buf[IFNAMSIZ - 1] = '\0';
3085 drv->monitor_ifidx =
3086 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
3088 if (drv->monitor_ifidx < 0)
3091 if (hostapd_set_iface_flags(drv, buf, 1))
3094 memset(&ll, 0, sizeof(ll));
3095 ll.sll_family = AF_PACKET;
3096 ll.sll_ifindex = drv->monitor_ifidx;
3097 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3098 if (drv->monitor_sock < 0) {
3099 perror("socket[PF_PACKET,SOCK_RAW]");
3103 if (add_monitor_filter(drv->monitor_sock)) {
3104 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3105 "interface; do filtering in user space");
3106 /* This works, but will cost in performance. */
3109 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3110 perror("monitor socket bind");
3114 optlen = sizeof(optval);
3117 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3118 perror("Failed to set socket priority");
3122 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3124 printf("Could not register monitor read socket\n");
3130 nl80211_remove_monitor_interface(drv);
3135 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3137 static int wpa_driver_nl80211_hapd_send_eapol(
3138 void *priv, const u8 *addr, const u8 *data,
3139 size_t data_len, int encrypt, const u8 *own_addr)
3141 struct wpa_driver_nl80211_data *drv = priv;
3142 struct ieee80211_hdr *hdr;
3147 int qos = sta->flags & WLAN_STA_WME;
3152 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3154 hdr = os_zalloc(len);
3156 printf("malloc() failed for i802_send_data(len=%lu)\n",
3157 (unsigned long) len);
3161 hdr->frame_control =
3162 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3163 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3165 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3166 #if 0 /* To be enabled if qos determination is added above */
3168 hdr->frame_control |=
3169 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3173 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3174 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3175 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3176 pos = (u8 *) (hdr + 1);
3178 #if 0 /* To be enabled if qos determination is added above */
3180 /* add an empty QoS header if needed */
3187 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3188 pos += sizeof(rfc1042_header);
3189 WPA_PUT_BE16(pos, ETH_P_PAE);
3191 memcpy(pos, data, data_len);
3193 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3195 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3197 (unsigned long) len, errno, strerror(errno));
3205 static u32 sta_flags_nl80211(int flags)
3209 if (flags & WLAN_STA_AUTHORIZED)
3210 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3211 if (flags & WLAN_STA_WMM)
3212 f |= BIT(NL80211_STA_FLAG_WME);
3213 if (flags & WLAN_STA_SHORT_PREAMBLE)
3214 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3215 if (flags & WLAN_STA_MFP)
3216 f |= BIT(NL80211_STA_FLAG_MFP);
3222 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3223 int total_flags, int flags_or,
3226 struct wpa_driver_nl80211_data *drv = priv;
3227 struct nl_msg *msg, *flags = NULL;
3228 struct nl80211_sta_flag_update upd;
3230 msg = nlmsg_alloc();
3234 flags = nlmsg_alloc();
3240 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3241 0, NL80211_CMD_SET_STATION, 0);
3243 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3244 if_nametoindex(drv->ifname));
3245 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3248 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3249 * can be removed eventually.
3251 if (total_flags & WLAN_STA_AUTHORIZED)
3252 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3254 if (total_flags & WLAN_STA_WMM)
3255 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3257 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3258 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3260 if (total_flags & WLAN_STA_MFP)
3261 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3263 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3264 goto nla_put_failure;
3266 os_memset(&upd, 0, sizeof(upd));
3267 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3268 upd.set = sta_flags_nl80211(flags_or);
3269 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3273 return send_and_recv_msgs(drv, msg, NULL, NULL);
3279 #endif /* CONFIG_AP || HOSTAPD */
3283 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3284 struct wpa_driver_associate_params *params)
3286 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3287 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3288 nl80211_remove_monitor_interface(drv);
3292 /* TODO: setup monitor interface (and add code somewhere to remove this
3293 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3297 #endif /* CONFIG_AP */
3300 static int wpa_driver_nl80211_connect(
3301 struct wpa_driver_nl80211_data *drv,
3302 struct wpa_driver_associate_params *params)
3305 enum nl80211_auth_type type;
3308 msg = nlmsg_alloc();
3312 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3313 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3314 NL80211_CMD_CONNECT, 0);
3316 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3317 if (params->bssid) {
3318 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3319 MAC2STR(params->bssid));
3320 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3323 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3324 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3327 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3328 params->ssid, params->ssid_len);
3329 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3331 if (params->ssid_len > sizeof(drv->ssid))
3332 goto nla_put_failure;
3333 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3334 drv->ssid_len = params->ssid_len;
3336 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3338 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3341 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3342 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3343 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3344 type = NL80211_AUTHTYPE_SHARED_KEY;
3345 else if (params->auth_alg & AUTH_ALG_LEAP)
3346 type = NL80211_AUTHTYPE_NETWORK_EAP;
3347 else if (params->auth_alg & AUTH_ALG_FT)
3348 type = NL80211_AUTHTYPE_FT;
3350 goto nla_put_failure;
3352 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3353 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3355 if (params->wpa_ie && params->wpa_ie_len) {
3356 enum nl80211_wpa_versions ver;
3358 if (params->wpa_ie[0] == WLAN_EID_RSN)
3359 ver = NL80211_WPA_VERSION_2;
3361 ver = NL80211_WPA_VERSION_1;
3363 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3364 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3367 if (params->pairwise_suite != CIPHER_NONE) {
3370 switch (params->pairwise_suite) {
3372 cipher = WLAN_CIPHER_SUITE_WEP40;
3375 cipher = WLAN_CIPHER_SUITE_WEP104;
3378 cipher = WLAN_CIPHER_SUITE_CCMP;
3382 cipher = WLAN_CIPHER_SUITE_TKIP;
3385 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3388 if (params->group_suite != CIPHER_NONE) {
3391 switch (params->group_suite) {
3393 cipher = WLAN_CIPHER_SUITE_WEP40;
3396 cipher = WLAN_CIPHER_SUITE_WEP104;
3399 cipher = WLAN_CIPHER_SUITE_CCMP;
3403 cipher = WLAN_CIPHER_SUITE_TKIP;
3406 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3409 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3410 params->key_mgmt_suite == KEY_MGMT_PSK) {
3411 int mgmt = WLAN_AKM_SUITE_PSK;
3413 switch (params->key_mgmt_suite) {
3414 case KEY_MGMT_802_1X:
3415 mgmt = WLAN_AKM_SUITE_8021X;
3419 mgmt = WLAN_AKM_SUITE_PSK;
3422 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3425 ret = nl80211_set_conn_keys(params, msg);
3427 goto nla_put_failure;
3429 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3432 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3433 "(%s)", ret, strerror(-ret));
3434 goto nla_put_failure;
3437 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3446 static int wpa_driver_nl80211_associate(
3447 void *priv, struct wpa_driver_associate_params *params)
3449 struct wpa_driver_nl80211_data *drv = priv;
3454 if (params->mode == 2)
3455 return wpa_driver_nl80211_ap(drv, params);
3456 #endif /* CONFIG_AP */
3458 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3459 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3461 return wpa_driver_nl80211_connect(drv, params);
3464 drv->associated = 0;
3466 msg = nlmsg_alloc();
3470 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3472 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3473 NL80211_CMD_ASSOCIATE, 0);
3475 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3476 if (params->bssid) {
3477 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3478 MAC2STR(params->bssid));
3479 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3482 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3483 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3486 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3487 params->ssid, params->ssid_len);
3488 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3490 if (params->ssid_len > sizeof(drv->ssid))
3491 goto nla_put_failure;
3492 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3493 drv->ssid_len = params->ssid_len;
3495 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3497 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3500 #ifdef CONFIG_IEEE80211W
3501 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3502 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3503 #endif /* CONFIG_IEEE80211W */
3505 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3507 if (params->prev_bssid) {
3508 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3509 MAC2STR(params->prev_bssid));
3510 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3511 params->prev_bssid);
3514 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3517 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3518 "(%s)", ret, strerror(-ret));
3519 goto nla_put_failure;
3522 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3531 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3532 int ifindex, int mode)
3537 msg = nlmsg_alloc();
3541 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3542 0, NL80211_CMD_SET_INTERFACE, 0);
3543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3544 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3546 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3550 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3551 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3556 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3558 struct wpa_driver_nl80211_data *drv = priv;
3564 nlmode = NL80211_IFTYPE_STATION;
3567 nlmode = NL80211_IFTYPE_ADHOC;
3570 nlmode = NL80211_IFTYPE_AP;
3576 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3577 drv->nlmode = nlmode;
3582 if (nlmode == drv->nlmode) {
3584 goto done; /* Already in the requested mode */
3587 /* mac80211 doesn't allow mode changes while the device is up, so
3588 * take the device down, try to set the mode again, and bring the
3591 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3592 /* Try to set the mode again while the interface is down */
3593 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3594 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3599 drv->nlmode = nlmode;
3602 #if defined(CONFIG_AP) || defined(HOSTAPD)
3603 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3604 /* Setup additional AP mode functionality if needed */
3605 if (drv->monitor_ifidx < 0 &&
3606 nl80211_create_monitor_interface(drv))
3608 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3609 /* Remove additional AP mode functionality */
3610 nl80211_remove_monitor_interface(drv);
3612 #endif /* CONFIG_AP || HOSTAPD */
3618 static int wpa_driver_nl80211_get_capa(void *priv,
3619 struct wpa_driver_capa *capa)
3621 struct wpa_driver_nl80211_data *drv = priv;
3622 if (!drv->has_capability)
3624 os_memcpy(capa, &drv->capa, sizeof(*capa));
3629 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3631 struct wpa_driver_nl80211_data *drv = priv;
3633 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3634 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3635 drv->operstate = state;
3636 return wpa_driver_nl80211_send_oper_ifla(
3637 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3641 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3643 struct wpa_driver_nl80211_data *drv = priv;
3645 struct nl80211_sta_flag_update upd;
3647 msg = nlmsg_alloc();
3651 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3652 0, NL80211_CMD_SET_STATION, 0);
3654 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3655 if_nametoindex(drv->ifname));
3656 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3658 os_memset(&upd, 0, sizeof(upd));
3659 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3661 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3662 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3664 return send_and_recv_msgs(drv, msg, NULL, NULL);
3672 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3675 struct i802_bss *bss = &drv->bss;
3677 if (ifindex == bss->ifindex)
3681 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3686 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3691 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3693 for (i = 0; i < drv->num_if_indices; i++) {
3694 if (drv->if_indices[i] == 0) {
3695 drv->if_indices[i] = ifidx;
3700 if (drv->if_indices != drv->default_if_indices)
3701 old = drv->if_indices;
3705 drv->if_indices = realloc(old,
3706 sizeof(int) * (drv->num_if_indices + 1));
3707 if (!drv->if_indices) {
3709 drv->if_indices = drv->default_if_indices;
3711 drv->if_indices = old;
3712 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3714 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3717 drv->if_indices[drv->num_if_indices] = ifidx;
3718 drv->num_if_indices++;
3722 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3726 for (i = 0; i < drv->num_if_indices; i++) {
3727 if (drv->if_indices[i] == ifidx) {
3728 drv->if_indices[i] = 0;
3735 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3739 for (i = 0; i < drv->num_if_indices; i++)
3740 if (drv->if_indices[i] == ifidx)
3747 static inline int min_int(int a, int b)
3755 static int get_key_handler(struct nl_msg *msg, void *arg)
3757 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3758 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3760 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3761 genlmsg_attrlen(gnlh, 0), NULL);
3764 * TODO: validate the key index and mac address!
3765 * Otherwise, there's a race condition as soon as
3766 * the kernel starts sending key notifications.
3769 if (tb[NL80211_ATTR_KEY_SEQ])
3770 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3771 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3776 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3779 struct wpa_driver_nl80211_data *drv = priv;
3782 msg = nlmsg_alloc();
3786 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3787 0, NL80211_CMD_GET_KEY, 0);
3790 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3791 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3792 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3796 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3802 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3805 struct wpa_driver_nl80211_data *drv = priv;
3807 u8 rates[NL80211_MAX_SUPP_RATES];
3811 msg = nlmsg_alloc();
3815 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3816 NL80211_CMD_SET_BSS, 0);
3818 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3819 rates[rates_len++] = basic_rates[i] / 5;
3821 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3823 /* TODO: multi-BSS support */
3824 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3826 return send_and_recv_msgs(drv, msg, NULL, NULL);
3832 /* Set kernel driver on given frequency (MHz) */
3833 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3835 struct wpa_driver_nl80211_data *drv = priv;
3836 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3837 freq->sec_channel_offset);
3841 static int i802_set_rts(void *priv, int rts)
3843 struct wpa_driver_nl80211_data *drv = priv;
3848 msg = nlmsg_alloc();
3857 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3858 0, NL80211_CMD_SET_WIPHY, 0);
3859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3860 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3862 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3866 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3867 "%d (%s)", rts, ret, strerror(-ret));
3872 static int i802_set_frag(void *priv, int frag)
3874 struct wpa_driver_nl80211_data *drv = priv;
3879 msg = nlmsg_alloc();
3888 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3889 0, NL80211_CMD_SET_WIPHY, 0);
3890 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3891 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3893 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3897 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3898 "%d: %d (%s)", frag, ret, strerror(-ret));
3903 static int i802_flush(void *priv)
3905 struct wpa_driver_nl80211_data *drv = priv;
3908 msg = nlmsg_alloc();
3912 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3913 0, NL80211_CMD_DEL_STATION, 0);
3916 * XXX: FIX! this needs to flush all VLANs too
3918 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3919 if_nametoindex(drv->ifname));
3921 return send_and_recv_msgs(drv, msg, NULL, NULL);
3927 static int get_sta_handler(struct nl_msg *msg, void *arg)
3929 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3930 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3931 struct hostap_sta_driver_data *data = arg;
3932 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3933 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3934 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3935 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3936 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3937 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3938 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3941 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3942 genlmsg_attrlen(gnlh, 0), NULL);
3945 * TODO: validate the interface and mac address!
3946 * Otherwise, there's a race condition as soon as
3947 * the kernel starts sending station notifications.
3950 if (!tb[NL80211_ATTR_STA_INFO]) {
3951 wpa_printf(MSG_DEBUG, "sta stats missing!");
3954 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3955 tb[NL80211_ATTR_STA_INFO],
3957 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3961 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3962 data->inactive_msec =
3963 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3964 if (stats[NL80211_STA_INFO_RX_BYTES])
3965 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3966 if (stats[NL80211_STA_INFO_TX_BYTES])
3967 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3968 if (stats[NL80211_STA_INFO_RX_PACKETS])
3970 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3971 if (stats[NL80211_STA_INFO_TX_PACKETS])
3973 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3978 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3981 struct wpa_driver_nl80211_data *drv = priv;
3984 os_memset(data, 0, sizeof(*data));
3985 msg = nlmsg_alloc();
3989 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3990 0, NL80211_CMD_GET_STATION, 0);
3992 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3993 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3995 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4001 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4002 int cw_min, int cw_max, int burst_time)
4004 struct wpa_driver_nl80211_data *drv = priv;
4006 struct nlattr *txq, *params;
4008 msg = nlmsg_alloc();
4012 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4013 0, NL80211_CMD_SET_WIPHY, 0);
4015 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4017 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4019 goto nla_put_failure;
4021 /* We are only sending parameters for a single TXQ at a time */
4022 params = nla_nest_start(msg, 1);
4024 goto nla_put_failure;
4026 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4027 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4028 * 32 usec, so need to convert the value here. */
4029 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4030 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4031 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4032 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4034 nla_nest_end(msg, params);
4036 nla_nest_end(msg, txq);
4038 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4045 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
4047 struct wpa_driver_nl80211_data *drv = priv;
4049 struct i802_bss *bss;
4051 bss = os_zalloc(sizeof(*bss));
4055 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
4060 bss->ifindex = ifidx;
4061 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4062 nl80211_remove_iface(priv, ifidx);
4066 bss->next = drv->bss.next;
4067 drv->bss.next = bss;
4072 static int i802_bss_remove(void *priv, const char *ifname)
4074 struct wpa_driver_nl80211_data *drv = priv;
4075 struct i802_bss *bss, *prev;
4076 int ifindex = if_nametoindex(ifname);
4077 nl80211_remove_iface(priv, ifindex);
4079 bss = drv->bss.next;
4081 if (ifindex == bss->ifindex) {
4082 prev->next = bss->next;
4093 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4095 struct wpa_driver_nl80211_data *drv = priv;
4098 msg = nlmsg_alloc();
4102 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4103 NL80211_CMD_SET_BSS, 0);
4106 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4108 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4110 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4112 /* TODO: multi-BSS support */
4113 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4115 return send_and_recv_msgs(drv, msg, NULL, NULL);
4121 static int i802_set_cts_protect(void *priv, int value)
4123 return i802_set_bss(priv, value, -1, -1);
4127 static int i802_set_preamble(void *priv, int value)
4129 return i802_set_bss(priv, -1, value, -1);
4133 static int i802_set_short_slot_time(void *priv, int value)
4135 return i802_set_bss(priv, -1, -1, value);
4139 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
4142 case HOSTAPD_IF_VLAN:
4143 return NL80211_IFTYPE_AP_VLAN;
4149 static int i802_if_add(const char *iface, void *priv,
4150 enum hostapd_driver_if_type type, char *ifname,
4153 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
4159 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
4160 char *ifname, const u8 *addr)
4162 /* unused at the moment */
4167 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
4168 const char *ifname, const u8 *addr)
4170 nl80211_remove_iface(priv, if_nametoindex(ifname));
4175 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4176 const char *ifname, int vlan_id)
4178 struct wpa_driver_nl80211_data *drv = priv;
4181 msg = nlmsg_alloc();
4185 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4186 0, NL80211_CMD_SET_STATION, 0);
4188 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4189 if_nametoindex(drv->ifname));
4190 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4191 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4192 if_nametoindex(ifname));
4194 return send_and_recv_msgs(drv, msg, NULL, NULL);
4200 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4202 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4203 struct sockaddr_ll lladdr;
4204 unsigned char buf[3000];
4206 socklen_t fromlen = sizeof(lladdr);
4208 len = recvfrom(sock, buf, sizeof(buf), 0,
4209 (struct sockaddr *)&lladdr, &fromlen);
4215 if (have_ifidx(drv, lladdr.sll_ifindex)) {
4217 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
4220 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
4225 static int i802_get_inact_sec(void *priv, const u8 *addr)
4227 struct hostap_sta_driver_data data;
4230 data.inactive_msec = (unsigned long) -1;
4231 ret = i802_read_sta_data(priv, &data, addr);
4232 if (ret || data.inactive_msec == (unsigned long) -1)
4234 return data.inactive_msec / 1000;
4238 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4247 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4250 struct wpa_driver_nl80211_data *drv = priv;
4251 struct ieee80211_mgmt mgmt;
4253 memset(&mgmt, 0, sizeof(mgmt));
4254 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4255 WLAN_FC_STYPE_DEAUTH);
4256 memcpy(mgmt.da, addr, ETH_ALEN);
4257 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4258 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4259 mgmt.u.deauth.reason_code = host_to_le16(reason);
4260 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4262 sizeof(mgmt.u.deauth));
4266 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4269 struct wpa_driver_nl80211_data *drv = priv;
4270 struct ieee80211_mgmt mgmt;
4272 memset(&mgmt, 0, sizeof(mgmt));
4273 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4274 WLAN_FC_STYPE_DISASSOC);
4275 memcpy(mgmt.da, addr, ETH_ALEN);
4276 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4277 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4278 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4279 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4281 sizeof(mgmt.u.disassoc));
4285 static void *i802_init(struct hostapd_data *hapd,
4286 struct wpa_init_params *params)
4288 struct wpa_driver_nl80211_data *drv;
4291 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4295 drv->bss.ifindex = drv->ifindex;
4297 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4298 drv->if_indices = drv->default_if_indices;
4299 for (i = 0; i < params->num_bridge; i++) {
4300 if (params->bridge[i])
4301 add_ifidx(drv, if_nametoindex(params->bridge[i]));
4304 /* start listening for EAPOL on the default AP interface */
4305 add_ifidx(drv, drv->ifindex);
4307 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4310 if (params->bssid) {
4311 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4315 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4316 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4317 "into AP mode", drv->ifname);
4321 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4324 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4325 if (drv->eapol_sock < 0) {
4326 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4330 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4332 printf("Could not register read socket for eapol\n");
4336 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4342 nl80211_remove_monitor_interface(drv);
4343 if (drv->ioctl_sock >= 0)
4344 close(drv->ioctl_sock);
4346 genl_family_put(drv->nl80211);
4347 nl_cache_free(drv->nl_cache);
4348 nl_handle_destroy(drv->nl_handle);
4349 nl_cb_put(drv->nl_cb);
4356 static void i802_deinit(void *priv)
4358 wpa_driver_nl80211_deinit(priv);
4361 #endif /* HOSTAPD */
4364 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4366 .desc = "Linux nl80211/cfg80211",
4367 .get_bssid = wpa_driver_nl80211_get_bssid,
4368 .get_ssid = wpa_driver_nl80211_get_ssid,
4369 .set_key = wpa_driver_nl80211_set_key,
4370 .scan2 = wpa_driver_nl80211_scan,
4371 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4372 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4373 .disassociate = wpa_driver_nl80211_disassociate,
4374 .authenticate = wpa_driver_nl80211_authenticate,
4375 .associate = wpa_driver_nl80211_associate,
4376 .init = wpa_driver_nl80211_init,
4377 .deinit = wpa_driver_nl80211_deinit,
4378 .get_capa = wpa_driver_nl80211_get_capa,
4379 .set_operstate = wpa_driver_nl80211_set_operstate,
4380 .set_supp_port = wpa_driver_nl80211_set_supp_port,
4381 .set_country = wpa_driver_nl80211_set_country,
4382 .set_beacon = wpa_driver_nl80211_set_beacon,
4383 #if defined(CONFIG_AP) || defined(HOSTAPD)
4384 .send_mlme = wpa_driver_nl80211_send_mlme,
4385 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4386 .sta_add = wpa_driver_nl80211_sta_add,
4387 .sta_remove = wpa_driver_nl80211_sta_remove,
4388 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4389 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4390 #endif /* CONFIG_AP || HOSTAPD */
4392 .hapd_init = i802_init,
4393 .hapd_deinit = i802_deinit,
4394 .get_seqnum = i802_get_seqnum,
4395 .flush = i802_flush,
4396 .read_sta_data = i802_read_sta_data,
4397 .sta_deauth = i802_sta_deauth,
4398 .sta_disassoc = i802_sta_disassoc,
4399 .get_inact_sec = i802_get_inact_sec,
4400 .sta_clear_stats = i802_sta_clear_stats,
4401 .set_freq = i802_set_freq,
4402 .set_rts = i802_set_rts,
4403 .set_frag = i802_set_frag,
4404 .set_rate_sets = i802_set_rate_sets,
4405 .set_cts_protect = i802_set_cts_protect,
4406 .set_preamble = i802_set_preamble,
4407 .set_short_slot_time = i802_set_short_slot_time,
4408 .set_tx_queue_params = i802_set_tx_queue_params,
4409 .bss_add = i802_bss_add,
4410 .bss_remove = i802_bss_remove,
4411 .if_add = i802_if_add,
4412 .if_update = i802_if_update,
4413 .if_remove = i802_if_remove,
4414 .set_sta_vlan = i802_set_sta_vlan,
4415 #endif /* HOSTAPD */