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 /* libnl 2.0 compatibility code */
44 #define nl_handle nl_sock
45 #define nl_handle_alloc_cb nl_socket_alloc_cb
46 #define nl_handle_destroy nl_socket_free
47 #endif /* CONFIG_LIBNL20 */
51 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
54 #define IFF_DORMANT 0x20000 /* driver signals dormant */
57 #ifndef IF_OPER_DORMANT
58 #define IF_OPER_DORMANT 5
65 struct i802_bss *next;
67 unsigned int beacon_set:1;
70 struct wpa_driver_nl80211_data {
73 int ioctl_sock; /* socket for ioctl() use */
74 char ifname[IFNAMSIZ + 1];
77 struct wpa_driver_capa capa;
82 int scan_complete_events;
84 struct nl_handle *nl_handle;
85 struct nl_handle *nl_handle_event;
86 struct nl_cache *nl_cache;
87 struct nl_cache *nl_cache_event;
89 struct genl_family *nl80211;
96 int ap_scan_as_station;
101 unsigned int beacon_set:1;
104 int eapol_sock; /* socket for EAPOL frames */
106 int default_if_indices[16];
118 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
120 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
122 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
124 #if defined(CONFIG_AP) || defined(HOSTAPD)
125 static void nl80211_remove_monitor_interface(
126 struct wpa_driver_nl80211_data *drv);
127 #endif /* CONFIG_AP || HOSTAPD */
130 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
132 #endif /* CONFIG_AP */
135 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
136 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
137 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
139 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
141 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
146 static int ack_handler(struct nl_msg *msg, void *arg)
153 static int finish_handler(struct nl_msg *msg, void *arg)
160 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
169 static int no_seq_check(struct nl_msg *msg, void *arg)
175 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
177 int (*valid_handler)(struct nl_msg *, void *),
183 cb = nl_cb_clone(drv->nl_cb);
187 err = nl_send_auto_complete(drv->nl_handle, msg);
193 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
194 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
195 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
198 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
199 valid_handler, valid_data);
202 nl_recvmsgs(drv->nl_handle, cb);
216 static int family_handler(struct nl_msg *msg, void *arg)
218 struct family_data *res = arg;
219 struct nlattr *tb[CTRL_ATTR_MAX + 1];
220 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
221 struct nlattr *mcgrp;
224 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
225 genlmsg_attrlen(gnlh, 0), NULL);
226 if (!tb[CTRL_ATTR_MCAST_GROUPS])
229 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
230 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
231 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
232 nla_len(mcgrp), NULL);
233 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
234 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
235 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
237 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
239 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
247 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
248 const char *family, const char *group)
252 struct family_data res = { group, -ENOENT };
257 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
258 0, 0, CTRL_CMD_GETFAMILY, 0);
259 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
261 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
273 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
274 const char *ifname, u8 *addr)
278 os_memset(&ifr, 0, sizeof(ifr));
279 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
280 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
281 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
282 ifname, errno, strerror(errno));
286 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
287 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
288 ifname, ifr.ifr_hwaddr.sa_family);
291 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
297 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
298 const char *ifname, const u8 *addr)
302 os_memset(&ifr, 0, sizeof(ifr));
303 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
304 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
305 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
307 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
308 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
309 ifname, errno, strerror(errno));
318 static int wpa_driver_nl80211_send_oper_ifla(
319 struct wpa_driver_nl80211_data *drv,
320 int linkmode, int operstate)
324 struct ifinfomsg ifinfo;
331 os_memset(&req, 0, sizeof(req));
333 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
334 req.hdr.nlmsg_type = RTM_SETLINK;
335 req.hdr.nlmsg_flags = NLM_F_REQUEST;
336 req.hdr.nlmsg_seq = ++nl_seq;
337 req.hdr.nlmsg_pid = 0;
339 req.ifinfo.ifi_family = AF_UNSPEC;
340 req.ifinfo.ifi_type = 0;
341 req.ifinfo.ifi_index = drv->ifindex;
342 req.ifinfo.ifi_flags = 0;
343 req.ifinfo.ifi_change = 0;
345 if (linkmode != -1) {
346 rta = aliasing_hide_typecast(
347 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
349 rta->rta_type = IFLA_LINKMODE;
350 rta->rta_len = RTA_LENGTH(sizeof(char));
351 *((char *) RTA_DATA(rta)) = linkmode;
352 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
353 RTA_LENGTH(sizeof(char));
355 if (operstate != -1) {
356 rta = aliasing_hide_typecast(
357 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
359 rta->rta_type = IFLA_OPERSTATE;
360 rta->rta_len = RTA_LENGTH(sizeof(char));
361 *((char *) RTA_DATA(rta)) = operstate;
362 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
363 RTA_LENGTH(sizeof(char));
366 wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
367 linkmode, operstate);
369 ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
371 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
372 " %s (assume operstate is not supported)",
376 return ret < 0 ? -1 : 0;
380 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
382 struct wpa_driver_nl80211_data *drv = priv;
383 if (!drv->associated)
385 os_memcpy(bssid, drv->bssid, ETH_ALEN);
390 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
392 struct wpa_driver_nl80211_data *drv = priv;
393 if (!drv->associated)
395 os_memcpy(ssid, drv->ssid, drv->ssid_len);
396 return drv->ssid_len;
402 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
403 void *ctx, char *buf, size_t len,
406 union wpa_event_data event;
408 os_memset(&event, 0, sizeof(event));
409 if (len > sizeof(event.interface_status.ifname))
410 len = sizeof(event.interface_status.ifname) - 1;
411 os_memcpy(event.interface_status.ifname, buf, len);
412 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
413 EVENT_INTERFACE_ADDED;
415 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
417 event.interface_status.ifname,
418 del ? "removed" : "added");
420 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
427 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
431 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
434 struct ifinfomsg *ifi;
435 int attrlen, _nlmsg_len, rta_len;
440 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
442 attrlen = h->nlmsg_len - _nlmsg_len;
446 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
448 rta_len = RTA_ALIGN(sizeof(struct rtattr));
449 while (RTA_OK(attr, attrlen)) {
450 if (attr->rta_type == IFLA_IFNAME) {
451 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
457 attr = RTA_NEXT(attr, attrlen);
464 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
465 int ifindex, struct nlmsghdr *h)
467 if (drv->ifindex == ifindex)
470 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
471 drv->ifindex = if_nametoindex(drv->ifname);
472 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
474 wpa_driver_nl80211_finish_drv_init(drv);
482 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
483 void *ctx, struct nlmsghdr *h,
486 struct ifinfomsg *ifi;
487 int attrlen, _nlmsg_len, rta_len;
488 struct rtattr * attr;
490 if (len < sizeof(*ifi))
495 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
496 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
501 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
503 drv->operstate, ifi->ifi_flags,
504 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
505 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
506 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
507 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
509 * Some drivers send the association event before the operup event--in
510 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
511 * fails. This will hit us when wpa_supplicant does not need to do
512 * IEEE 802.1X authentication
514 if (drv->operstate == 1 &&
515 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
516 !(ifi->ifi_flags & IFF_RUNNING))
517 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
519 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
521 attrlen = h->nlmsg_len - _nlmsg_len;
525 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
527 rta_len = RTA_ALIGN(sizeof(struct rtattr));
528 while (RTA_OK(attr, attrlen)) {
529 if (attr->rta_type == IFLA_IFNAME) {
530 wpa_driver_nl80211_event_link(
532 ((char *) attr) + rta_len,
533 attr->rta_len - rta_len, 0);
535 attr = RTA_NEXT(attr, attrlen);
540 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
541 void *ctx, struct nlmsghdr *h,
544 struct ifinfomsg *ifi;
545 int attrlen, _nlmsg_len, rta_len;
546 struct rtattr * attr;
548 if (len < sizeof(*ifi))
553 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
555 attrlen = h->nlmsg_len - _nlmsg_len;
559 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
561 rta_len = RTA_ALIGN(sizeof(struct rtattr));
562 while (RTA_OK(attr, attrlen)) {
563 if (attr->rta_type == IFLA_IFNAME) {
564 wpa_driver_nl80211_event_link(
566 ((char *) attr) + rta_len,
567 attr->rta_len - rta_len, 1);
569 attr = RTA_NEXT(attr, attrlen);
574 static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
579 struct sockaddr_nl from;
585 fromlen = sizeof(from);
586 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
587 (struct sockaddr *) &from, &fromlen);
589 if (errno != EINTR && errno != EAGAIN)
590 perror("recvfrom(netlink)");
594 h = (struct nlmsghdr *) buf;
595 while (left >= (int) sizeof(*h)) {
599 plen = len - sizeof(*h);
600 if (len > left || plen < 0) {
601 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
602 "len=%d left=%d plen=%d",
607 switch (h->nlmsg_type) {
609 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
613 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
618 len = NLMSG_ALIGN(len);
620 h = (struct nlmsghdr *) ((char *) h + len);
624 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
628 if (--max_events > 0) {
630 * Try to receive all events in one eloop call in order to
631 * limit race condition on cases where AssocInfo event, Assoc
632 * event, and EAPOL frames are received more or less at the
633 * same time. We want to process the event messages first
634 * before starting EAPOL processing.
643 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
644 const u8 *frame, size_t len)
646 const struct ieee80211_mgmt *mgmt;
647 union wpa_event_data event;
649 mgmt = (const struct ieee80211_mgmt *) frame;
650 if (len < 24 + sizeof(mgmt->u.auth)) {
651 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
656 os_memset(&event, 0, sizeof(event));
657 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
658 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
659 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
660 if (len > 24 + sizeof(mgmt->u.auth)) {
661 event.auth.ies = mgmt->u.auth.variable;
662 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
665 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
669 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
670 const u8 *frame, size_t len)
672 const struct ieee80211_mgmt *mgmt;
673 union wpa_event_data event;
676 mgmt = (const struct ieee80211_mgmt *) frame;
677 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
678 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
683 status = le_to_host16(mgmt->u.assoc_resp.status_code);
684 if (status != WLAN_STATUS_SUCCESS) {
685 os_memset(&event, 0, sizeof(event));
686 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
687 event.assoc_reject.resp_ies =
688 (u8 *) mgmt->u.assoc_resp.variable;
689 event.assoc_reject.resp_ies_len =
690 len - 24 - sizeof(mgmt->u.assoc_resp);
692 event.assoc_reject.status_code = status;
694 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
699 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
701 os_memset(&event, 0, sizeof(event));
702 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
703 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
704 event.assoc_info.resp_ies_len =
705 len - 24 - sizeof(mgmt->u.assoc_resp);
708 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
712 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
713 enum nl80211_commands cmd, struct nlattr *status,
714 struct nlattr *addr, struct nlattr *req_ie,
715 struct nlattr *resp_ie)
717 union wpa_event_data event;
719 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
721 * Avoid reporting two association events that would confuse
724 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
725 "when using userspace SME", cmd);
729 os_memset(&event, 0, sizeof(event));
730 if (cmd == NL80211_CMD_CONNECT &&
731 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
733 event.assoc_reject.resp_ies = nla_data(resp_ie);
734 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
736 event.assoc_reject.status_code = nla_get_u16(status);
737 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
743 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
746 event.assoc_info.req_ies = nla_data(req_ie);
747 event.assoc_info.req_ies_len = nla_len(req_ie);
750 event.assoc_info.resp_ies = nla_data(resp_ie);
751 event.assoc_info.resp_ies_len = nla_len(resp_ie);
754 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
758 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
759 enum nl80211_commands cmd, struct nlattr *addr)
761 union wpa_event_data event;
762 enum wpa_event_type ev;
764 if (nla_len(addr) != ETH_ALEN)
767 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
768 cmd, MAC2STR((u8 *) nla_data(addr)));
770 if (cmd == NL80211_CMD_AUTHENTICATE)
771 ev = EVENT_AUTH_TIMED_OUT;
772 else if (cmd == NL80211_CMD_ASSOCIATE)
773 ev = EVENT_ASSOC_TIMED_OUT;
777 os_memset(&event, 0, sizeof(event));
778 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
779 wpa_supplicant_event(drv->ctx, ev, &event);
783 static void mlme_event(struct wpa_driver_nl80211_data *drv,
784 enum nl80211_commands cmd, struct nlattr *frame,
785 struct nlattr *addr, struct nlattr *timed_out)
787 if (timed_out && addr) {
788 mlme_timeout_event(drv, cmd, addr);
793 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
798 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
799 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
800 nla_data(frame), nla_len(frame));
803 case NL80211_CMD_AUTHENTICATE:
804 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
806 case NL80211_CMD_ASSOCIATE:
807 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
809 case NL80211_CMD_DEAUTHENTICATE:
811 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
813 case NL80211_CMD_DISASSOCIATE:
815 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
823 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
826 union wpa_event_data data;
828 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
829 os_memset(&data, 0, sizeof(data));
830 if (tb[NL80211_ATTR_MAC]) {
831 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
832 nla_data(tb[NL80211_ATTR_MAC]),
833 nla_len(tb[NL80211_ATTR_MAC]));
834 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
836 if (tb[NL80211_ATTR_KEY_SEQ]) {
837 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
838 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
839 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
841 if (tb[NL80211_ATTR_KEY_TYPE]) {
842 enum nl80211_key_type key_type =
843 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
844 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
845 if (key_type == NL80211_KEYTYPE_PAIRWISE)
846 data.michael_mic_failure.unicast = 1;
848 data.michael_mic_failure.unicast = 1;
850 if (tb[NL80211_ATTR_KEY_IDX]) {
851 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
852 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
855 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
859 static int process_event(struct nl_msg *msg, void *arg)
861 struct wpa_driver_nl80211_data *drv = arg;
862 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
863 struct nlattr *tb[NL80211_ATTR_MAX + 1];
865 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
866 genlmsg_attrlen(gnlh, 0), NULL);
868 if (tb[NL80211_ATTR_IFINDEX]) {
869 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
870 if (ifindex != drv->ifindex) {
871 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
872 " for foreign interface (ifindex %d)",
878 if (drv->ap_scan_as_station &&
879 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
880 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
881 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
882 drv->ap_scan_as_station = 0;
886 case NL80211_CMD_TRIGGER_SCAN:
887 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
889 case NL80211_CMD_NEW_SCAN_RESULTS:
890 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
891 drv->scan_complete_events = 1;
892 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
894 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
896 case NL80211_CMD_SCAN_ABORTED:
897 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
899 * Need to indicate that scan results are available in order
900 * not to make wpa_supplicant stop its scanning.
902 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
904 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
906 case NL80211_CMD_AUTHENTICATE:
907 case NL80211_CMD_ASSOCIATE:
908 case NL80211_CMD_DEAUTHENTICATE:
909 case NL80211_CMD_DISASSOCIATE:
910 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
911 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
913 case NL80211_CMD_CONNECT:
914 case NL80211_CMD_ROAM:
915 mlme_event_connect(drv, gnlh->cmd,
916 tb[NL80211_ATTR_STATUS_CODE],
917 tb[NL80211_ATTR_MAC],
918 tb[NL80211_ATTR_REQ_IE],
919 tb[NL80211_ATTR_RESP_IE]);
921 case NL80211_CMD_DISCONNECT:
922 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
924 * Avoid reporting two disassociation events that could
925 * confuse the core code.
927 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
928 "event when using userspace SME");
932 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
934 case NL80211_CMD_MICHAEL_MIC_FAILURE:
935 mlme_event_michael_mic_failure(drv, tb);
938 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
939 "(cmd=%d)", gnlh->cmd);
947 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
951 struct wpa_driver_nl80211_data *drv = eloop_ctx;
953 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
955 cb = nl_cb_clone(drv->nl_cb);
958 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
959 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
960 nl_recvmsgs(drv->nl_handle_event, cb);
965 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
966 const char *ifname, int dev_up)
970 if (drv->ioctl_sock < 0)
973 os_memset(&ifr, 0, sizeof(ifr));
974 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
976 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
977 perror("ioctl[SIOCGIFFLAGS]");
978 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
984 if (ifr.ifr_flags & IFF_UP)
986 ifr.ifr_flags |= IFF_UP;
988 if (!(ifr.ifr_flags & IFF_UP))
990 ifr.ifr_flags &= ~IFF_UP;
993 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
994 perror("ioctl[SIOCSIFFLAGS]");
1003 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1004 * @priv: driver_nl80211 private data
1005 * @alpha2_arg: country to which to switch to
1006 * Returns: 0 on success, -1 on failure
1008 * This asks nl80211 to set the regulatory domain for given
1009 * country ISO / IEC alpha2.
1011 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1013 struct wpa_driver_nl80211_data *drv = priv;
1017 msg = nlmsg_alloc();
1021 alpha2[0] = alpha2_arg[0];
1022 alpha2[1] = alpha2_arg[1];
1025 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1026 0, NL80211_CMD_REQ_SET_REG, 0);
1028 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1029 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1038 struct wiphy_info_data {
1042 int connect_supported;
1046 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1048 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1049 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1050 struct wiphy_info_data *info = arg;
1052 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1053 genlmsg_attrlen(gnlh, 0), NULL);
1055 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1056 info->max_scan_ssids =
1057 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1059 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1060 struct nlattr *nl_mode;
1062 nla_for_each_nested(nl_mode,
1063 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1064 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1065 info->ap_supported = 1;
1071 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1072 struct nlattr *nl_cmd;
1075 nla_for_each_nested(nl_cmd,
1076 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1077 u32 cmd = nla_get_u32(nl_cmd);
1078 if (cmd == NL80211_CMD_AUTHENTICATE)
1079 info->auth_supported = 1;
1080 else if (cmd == NL80211_CMD_CONNECT)
1081 info->connect_supported = 1;
1089 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1090 struct wiphy_info_data *info)
1094 os_memset(info, 0, sizeof(*info));
1095 msg = nlmsg_alloc();
1099 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1100 0, NL80211_CMD_GET_WIPHY, 0);
1102 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1104 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1113 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1115 struct wiphy_info_data info;
1116 if (wpa_driver_nl80211_get_info(drv, &info))
1118 drv->has_capability = 1;
1119 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1120 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1121 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1122 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1123 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1124 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1125 WPA_DRIVER_CAPA_ENC_WEP104 |
1126 WPA_DRIVER_CAPA_ENC_TKIP |
1127 WPA_DRIVER_CAPA_ENC_CCMP;
1129 drv->capa.max_scan_ssids = info.max_scan_ssids;
1130 if (info.ap_supported)
1131 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1133 if (info.auth_supported)
1134 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1135 else if (!info.connect_supported) {
1136 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1137 "authentication/association or connect commands");
1141 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1145 #endif /* HOSTAPD */
1148 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1153 /* Initialize generic netlink and nl80211 */
1155 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1156 if (drv->nl_cb == NULL) {
1157 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1162 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1163 if (drv->nl_handle == NULL) {
1164 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1169 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1170 if (drv->nl_handle_event == NULL) {
1171 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1172 "callbacks (event)");
1176 if (genl_connect(drv->nl_handle)) {
1177 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1182 if (genl_connect(drv->nl_handle_event)) {
1183 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1188 #ifdef CONFIG_LIBNL20
1189 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1190 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1194 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1196 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1197 "netlink cache (event)");
1200 #else /* CONFIG_LIBNL20 */
1201 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1202 if (drv->nl_cache == NULL) {
1203 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1207 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1208 if (drv->nl_cache_event == NULL) {
1209 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1210 "netlink cache (event)");
1213 #endif /* CONFIG_LIBNL20 */
1215 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1216 if (drv->nl80211 == NULL) {
1217 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1222 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1224 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1226 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1227 "membership for scan events: %d (%s)",
1228 ret, strerror(-ret));
1232 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1234 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1236 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1237 "membership for mlme events: %d (%s)",
1238 ret, strerror(-ret));
1242 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1243 wpa_driver_nl80211_event_receive, drv, ctx);
1248 nl_cache_free(drv->nl_cache_event);
1250 nl_cache_free(drv->nl_cache);
1252 nl_handle_destroy(drv->nl_handle_event);
1254 nl_handle_destroy(drv->nl_handle);
1256 nl_cb_put(drv->nl_cb);
1262 static int wpa_driver_nl80211_init_link_events(
1263 struct wpa_driver_nl80211_data *drv)
1269 struct sockaddr_nl local;
1271 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1273 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1277 os_memset(&local, 0, sizeof(local));
1278 local.nl_family = AF_NETLINK;
1279 local.nl_groups = RTMGRP_LINK;
1280 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1281 perror("bind(netlink)");
1286 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
1288 drv->link_event_sock = s;
1291 #endif /* HOSTAPD */
1296 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1297 * @ctx: context to be used when calling wpa_supplicant functions,
1298 * e.g., wpa_supplicant_event()
1299 * @ifname: interface name, e.g., wlan0
1300 * Returns: Pointer to private data, %NULL on failure
1302 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1304 struct wpa_driver_nl80211_data *drv;
1306 drv = os_zalloc(sizeof(*drv));
1310 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1311 drv->monitor_ifidx = -1;
1312 drv->monitor_sock = -1;
1313 drv->link_event_sock = -1;
1314 drv->ioctl_sock = -1;
1316 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1321 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1322 if (drv->ioctl_sock < 0) {
1323 perror("socket(PF_INET,SOCK_DGRAM)");
1327 if (wpa_driver_nl80211_init_link_events(drv) ||
1328 wpa_driver_nl80211_finish_drv_init(drv))
1334 if (drv->link_event_sock >= 0) {
1335 eloop_unregister_read_sock(drv->link_event_sock);
1336 close(drv->link_event_sock);
1338 if (drv->ioctl_sock >= 0)
1339 close(drv->ioctl_sock);
1341 genl_family_put(drv->nl80211);
1342 nl_cache_free(drv->nl_cache);
1343 nl_handle_destroy(drv->nl_handle);
1344 nl_cb_put(drv->nl_cb);
1352 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1354 drv->ifindex = if_nametoindex(drv->ifname);
1357 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1358 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1359 "use managed mode");
1362 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1363 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1368 if (wpa_driver_nl80211_capa(drv))
1371 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1372 #endif /* HOSTAPD */
1379 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1381 struct i802_bss *bss, *prev;
1382 bss = drv->bss.next;
1389 #endif /* HOSTAPD */
1392 #if defined(CONFIG_AP) || defined(HOSTAPD)
1393 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1397 msg = nlmsg_alloc();
1401 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1402 0, NL80211_CMD_DEL_BEACON, 0);
1403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1405 return send_and_recv_msgs(drv, msg, NULL, NULL);
1409 #endif /* CONFIG_AP || HOSTAPD */
1413 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1414 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1416 * Shut down driver interface and processing of driver events. Free
1417 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1419 static void wpa_driver_nl80211_deinit(void *priv)
1421 struct wpa_driver_nl80211_data *drv = priv;
1423 #if defined(CONFIG_AP) || defined(HOSTAPD)
1424 nl80211_remove_monitor_interface(drv);
1425 if (drv->monitor_sock >= 0) {
1426 eloop_unregister_read_sock(drv->monitor_sock);
1427 close(drv->monitor_sock);
1430 if (drv->nlmode == NL80211_IFTYPE_AP)
1431 wpa_driver_nl80211_del_beacon(drv);
1432 #endif /* CONFIG_AP || HOSTAPD */
1435 if (drv->last_freq_ht) {
1436 /* Clear HT flags from the driver */
1437 struct hostapd_freq_params freq;
1438 os_memset(&freq, 0, sizeof(freq));
1439 freq.freq = drv->last_freq;
1440 i802_set_freq(priv, &freq);
1443 if (drv->eapol_sock >= 0) {
1444 eloop_unregister_read_sock(drv->eapol_sock);
1445 close(drv->eapol_sock);
1448 if (drv->if_indices != drv->default_if_indices)
1449 os_free(drv->if_indices);
1451 wpa_driver_nl80211_free_bss(drv);
1454 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1456 if (drv->link_event_sock >= 0) {
1457 eloop_unregister_read_sock(drv->link_event_sock);
1458 close(drv->link_event_sock);
1460 #endif /* HOSTAPD */
1462 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1464 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1465 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1467 if (drv->ioctl_sock >= 0)
1468 close(drv->ioctl_sock);
1470 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1471 genl_family_put(drv->nl80211);
1472 nl_cache_free(drv->nl_cache);
1473 nl_cache_free(drv->nl_cache_event);
1474 nl_handle_destroy(drv->nl_handle);
1475 nl_handle_destroy(drv->nl_handle_event);
1476 nl_cb_put(drv->nl_cb);
1483 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1484 * @eloop_ctx: Driver private data
1485 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1487 * This function can be used as registered timeout when starting a scan to
1488 * generate a scan completed event if the driver does not report this.
1490 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1492 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1493 if (drv->ap_scan_as_station) {
1494 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1495 drv->ap_scan_as_station = 0;
1497 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1498 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1503 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1504 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1505 * @params: Scan parameters
1506 * Returns: 0 on success, -1 on failure
1508 static int wpa_driver_nl80211_scan(void *priv,
1509 struct wpa_driver_scan_params *params)
1511 struct wpa_driver_nl80211_data *drv = priv;
1512 int ret = 0, timeout;
1513 struct nl_msg *msg, *ssids, *freqs;
1516 msg = nlmsg_alloc();
1517 ssids = nlmsg_alloc();
1518 freqs = nlmsg_alloc();
1519 if (!msg || !ssids || !freqs) {
1526 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1527 NL80211_CMD_TRIGGER_SCAN, 0);
1529 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1531 for (i = 0; i < params->num_ssids; i++) {
1532 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1533 params->ssids[i].ssid);
1535 if (params->num_ssids)
1536 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1538 if (params->extra_ies) {
1539 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1543 if (params->freqs) {
1544 for (i = 0; params->freqs[i]; i++)
1545 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1546 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1549 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1552 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1553 "(%s)", ret, strerror(-ret));
1555 if (drv->nlmode == NL80211_IFTYPE_AP) {
1557 * mac80211 does not allow scan requests in AP mode, so
1558 * try to do this in station mode.
1560 if (wpa_driver_nl80211_set_mode(drv,
1561 IEEE80211_MODE_INFRA))
1562 goto nla_put_failure;
1564 if (wpa_driver_nl80211_scan(drv, params)) {
1565 wpa_driver_nl80211_set_mode(drv,
1567 goto nla_put_failure;
1570 /* Restore AP mode when processing scan results */
1571 drv->ap_scan_as_station = 1;
1574 goto nla_put_failure;
1576 goto nla_put_failure;
1577 #endif /* HOSTAPD */
1580 /* Not all drivers generate "scan completed" wireless event, so try to
1581 * read results after a timeout. */
1583 if (drv->scan_complete_events) {
1585 * The driver seems to deliver events to notify when scan is
1586 * complete, so use longer timeout to avoid race conditions
1587 * with scanning and following association request.
1591 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1592 "seconds", ret, timeout);
1593 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1594 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1605 static int bss_info_handler(struct nl_msg *msg, void *arg)
1607 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1608 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1609 struct nlattr *bss[NL80211_BSS_MAX + 1];
1610 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1611 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1612 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1613 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1614 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1615 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1616 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1617 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1618 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1619 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1621 struct wpa_scan_results *res = arg;
1622 struct wpa_scan_res **tmp;
1623 struct wpa_scan_res *r;
1627 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1628 genlmsg_attrlen(gnlh, 0), NULL);
1629 if (!tb[NL80211_ATTR_BSS])
1631 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1634 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1635 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1636 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1642 r = os_zalloc(sizeof(*r) + ie_len);
1645 if (bss[NL80211_BSS_BSSID])
1646 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1648 if (bss[NL80211_BSS_FREQUENCY])
1649 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1650 if (bss[NL80211_BSS_BEACON_INTERVAL])
1651 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1652 if (bss[NL80211_BSS_CAPABILITY])
1653 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1654 r->flags |= WPA_SCAN_NOISE_INVALID;
1655 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1656 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1657 r->level /= 100; /* mBm to dBm */
1658 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1659 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1660 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1661 r->flags |= WPA_SCAN_LEVEL_INVALID;
1663 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1664 if (bss[NL80211_BSS_TSF])
1665 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1666 if (bss[NL80211_BSS_SEEN_MS_AGO])
1667 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1670 os_memcpy(r + 1, ie, ie_len);
1672 tmp = os_realloc(res->res,
1673 (res->num + 1) * sizeof(struct wpa_scan_res *));
1678 tmp[res->num++] = r;
1686 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1687 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1688 * Returns: Scan results on success, -1 on failure
1690 static struct wpa_scan_results *
1691 wpa_driver_nl80211_get_scan_results(void *priv)
1693 struct wpa_driver_nl80211_data *drv = priv;
1695 struct wpa_scan_results *res;
1698 res = os_zalloc(sizeof(*res));
1701 msg = nlmsg_alloc();
1703 goto nla_put_failure;
1705 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1706 NL80211_CMD_GET_SCAN, 0);
1707 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1709 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1712 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1713 (unsigned long) res->num);
1716 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1717 "(%s)", ret, strerror(-ret));
1720 wpa_scan_results_free(res);
1725 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1726 wpa_alg alg, const u8 *addr, int key_idx,
1728 const u8 *seq, size_t seq_len,
1729 const u8 *key, size_t key_len)
1731 struct wpa_driver_nl80211_data *drv = priv;
1732 int ifindex = if_nametoindex(ifname);
1736 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1737 "set_tx=%d seq_len=%lu key_len=%lu",
1738 __func__, ifindex, alg, addr, key_idx, set_tx,
1739 (unsigned long) seq_len, (unsigned long) key_len);
1741 msg = nlmsg_alloc();
1745 if (alg == WPA_ALG_NONE) {
1746 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1747 0, NL80211_CMD_DEL_KEY, 0);
1749 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1750 0, NL80211_CMD_NEW_KEY, 0);
1751 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1755 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1756 WLAN_CIPHER_SUITE_WEP40);
1758 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1759 WLAN_CIPHER_SUITE_WEP104);
1762 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1763 WLAN_CIPHER_SUITE_TKIP);
1766 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1767 WLAN_CIPHER_SUITE_CCMP);
1770 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1771 WLAN_CIPHER_SUITE_AES_CMAC);
1774 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1775 "algorithm %d", __func__, alg);
1782 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1784 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1786 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1787 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1789 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1790 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1792 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1793 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1796 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1797 ret, strerror(-ret));
1800 * If we failed or don't need to set the default TX key (below),
1803 if (ret || !set_tx || alg == WPA_ALG_NONE)
1805 #ifdef HOSTAPD /* FIX: is this needed? */
1808 #endif /* HOSTAPD */
1810 msg = nlmsg_alloc();
1814 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1815 0, NL80211_CMD_SET_KEY, 0);
1816 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1817 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1818 if (alg == WPA_ALG_IGTK)
1819 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1821 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1823 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1827 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1828 "err=%d %s)", ret, strerror(-ret));
1836 static int nl_add_key(struct nl_msg *msg, wpa_alg alg,
1837 int key_idx, int defkey,
1838 const u8 *seq, size_t seq_len,
1839 const u8 *key, size_t key_len)
1841 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1845 if (defkey && alg == WPA_ALG_IGTK)
1846 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1848 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1850 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1855 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1856 WLAN_CIPHER_SUITE_WEP40);
1858 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1859 WLAN_CIPHER_SUITE_WEP104);
1862 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1865 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1868 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1869 WLAN_CIPHER_SUITE_AES_CMAC);
1872 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1873 "algorithm %d", __func__, alg);
1878 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1880 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1882 nla_nest_end(msg, key_attr);
1890 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1894 struct nlattr *nl_keys, *nl_key;
1896 for (i = 0; i < 4; i++) {
1897 if (!params->wep_key[i])
1905 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1907 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1909 goto nla_put_failure;
1911 for (i = 0; i < 4; i++) {
1912 if (!params->wep_key[i])
1915 nl_key = nla_nest_start(msg, i);
1917 goto nla_put_failure;
1919 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1920 params->wep_key[i]);
1921 if (params->wep_key_len[i] == 5)
1922 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1923 WLAN_CIPHER_SUITE_WEP40);
1925 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1926 WLAN_CIPHER_SUITE_WEP104);
1928 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1930 if (i == params->wep_tx_keyidx)
1931 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1933 nla_nest_end(msg, nl_key);
1935 nla_nest_end(msg, nl_keys);
1944 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1945 const u8 *addr, int cmd, u16 reason_code)
1950 msg = nlmsg_alloc();
1954 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1956 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1957 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1958 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1960 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1963 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1964 "(%s)", ret, strerror(-ret));
1965 goto nla_put_failure;
1975 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1976 const u8 *addr, int reason_code)
1978 wpa_printf(MSG_DEBUG, "%s", __func__);
1979 drv->associated = 0;
1980 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1985 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1988 struct wpa_driver_nl80211_data *drv = priv;
1989 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1990 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1991 wpa_printf(MSG_DEBUG, "%s", __func__);
1992 drv->associated = 0;
1993 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1998 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2001 struct wpa_driver_nl80211_data *drv = priv;
2002 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2003 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2004 wpa_printf(MSG_DEBUG, "%s", __func__);
2005 drv->associated = 0;
2006 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2011 static int wpa_driver_nl80211_authenticate(
2012 void *priv, struct wpa_driver_auth_params *params)
2014 struct wpa_driver_nl80211_data *drv = priv;
2017 enum nl80211_auth_type type;
2020 drv->associated = 0;
2022 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2026 msg = nlmsg_alloc();
2030 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2033 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2034 NL80211_CMD_AUTHENTICATE, 0);
2036 for (i = 0; i < 4; i++) {
2037 if (!params->wep_key[i])
2039 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2041 i == params->wep_tx_keyidx, NULL, 0,
2043 params->wep_key_len[i]);
2044 if (params->wep_tx_keyidx != i)
2046 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2047 params->wep_key[i], params->wep_key_len[i])) {
2053 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2054 if (params->bssid) {
2055 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2056 MAC2STR(params->bssid));
2057 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2060 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2061 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2064 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2065 params->ssid, params->ssid_len);
2066 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2069 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2071 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2073 * TODO: if multiple auth_alg options enabled, try them one by one if
2074 * the AP rejects authentication due to unknown auth alg
2076 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2077 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2078 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2079 type = NL80211_AUTHTYPE_SHARED_KEY;
2080 else if (params->auth_alg & AUTH_ALG_LEAP)
2081 type = NL80211_AUTHTYPE_NETWORK_EAP;
2082 else if (params->auth_alg & AUTH_ALG_FT)
2083 type = NL80211_AUTHTYPE_FT;
2085 goto nla_put_failure;
2086 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2087 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2089 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2092 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2093 "(%s)", ret, strerror(-ret));
2095 if (ret == -EALREADY && count == 1 && params->bssid) {
2097 * mac80211 does not currently accept new
2098 * authentication if we are already authenticated. As a
2099 * workaround, force deauthentication and try again.
2101 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2102 "after forced deauthentication");
2103 wpa_driver_nl80211_deauthenticate(
2105 WLAN_REASON_PREV_AUTH_NOT_VALID);
2109 goto nla_put_failure;
2112 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2121 #if defined(CONFIG_AP) || defined(HOSTAPD)
2123 struct phy_info_arg {
2125 struct hostapd_hw_modes *modes;
2128 static int phy_info_handler(struct nl_msg *msg, void *arg)
2130 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2131 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2132 struct phy_info_arg *phy_info = arg;
2134 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2136 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2137 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2138 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2139 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2140 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2141 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2142 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2143 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2146 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2147 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2148 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2149 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2152 struct nlattr *nl_band;
2153 struct nlattr *nl_freq;
2154 struct nlattr *nl_rate;
2155 int rem_band, rem_freq, rem_rate;
2156 struct hostapd_hw_modes *mode;
2157 int idx, mode_is_set;
2159 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2160 genlmsg_attrlen(gnlh, 0), NULL);
2162 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2165 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2166 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2169 phy_info->modes = mode;
2173 mode = &phy_info->modes[*(phy_info->num_modes)];
2174 memset(mode, 0, sizeof(*mode));
2175 *(phy_info->num_modes) += 1;
2177 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2178 nla_len(nl_band), NULL);
2180 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2181 mode->ht_capab = nla_get_u16(
2182 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2185 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2186 mode->a_mpdu_params |= nla_get_u8(
2187 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2191 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2192 mode->a_mpdu_params |= nla_get_u8(
2193 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2197 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2198 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2200 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2201 os_memcpy(mode->mcs_set, mcs, 16);
2204 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2205 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2206 nla_len(nl_freq), freq_policy);
2207 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2209 mode->num_channels++;
2212 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
2213 if (!mode->channels)
2218 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2219 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2220 nla_len(nl_freq), freq_policy);
2221 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2224 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2225 mode->channels[idx].flag = 0;
2228 /* crude heuristic */
2229 if (mode->channels[idx].freq < 4000)
2230 mode->mode = HOSTAPD_MODE_IEEE80211B;
2232 mode->mode = HOSTAPD_MODE_IEEE80211A;
2236 /* crude heuristic */
2237 if (mode->channels[idx].freq < 4000)
2238 if (mode->channels[idx].freq == 2484)
2239 mode->channels[idx].chan = 14;
2241 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2243 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2245 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2246 mode->channels[idx].flag |=
2247 HOSTAPD_CHAN_DISABLED;
2248 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2249 mode->channels[idx].flag |=
2250 HOSTAPD_CHAN_PASSIVE_SCAN;
2251 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2252 mode->channels[idx].flag |=
2253 HOSTAPD_CHAN_NO_IBSS;
2254 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2255 mode->channels[idx].flag |=
2258 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2259 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2260 mode->channels[idx].max_tx_power =
2261 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2266 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2267 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2268 nla_len(nl_rate), rate_policy);
2269 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2274 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
2280 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2281 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2282 nla_len(nl_rate), rate_policy);
2283 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2285 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2287 /* crude heuristic */
2288 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2289 mode->rates[idx].rate > 200)
2290 mode->mode = HOSTAPD_MODE_IEEE80211G;
2292 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
2293 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2302 static struct hostapd_hw_modes *
2303 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2306 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2307 int i, mode11g_idx = -1;
2309 /* If only 802.11g mode is included, use it to construct matching
2310 * 802.11b mode data. */
2312 for (m = 0; m < *num_modes; m++) {
2313 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2314 return modes; /* 802.11b already included */
2315 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2319 if (mode11g_idx < 0)
2320 return modes; /* 2.4 GHz band not supported at all */
2322 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2324 return modes; /* Could not add 802.11b mode */
2326 mode = &nmodes[*num_modes];
2327 os_memset(mode, 0, sizeof(*mode));
2331 mode->mode = HOSTAPD_MODE_IEEE80211B;
2333 mode11g = &modes[mode11g_idx];
2334 mode->num_channels = mode11g->num_channels;
2335 mode->channels = os_malloc(mode11g->num_channels *
2336 sizeof(struct hostapd_channel_data));
2337 if (mode->channels == NULL) {
2339 return modes; /* Could not add 802.11b mode */
2341 os_memcpy(mode->channels, mode11g->channels,
2342 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2344 mode->num_rates = 0;
2345 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2346 if (mode->rates == NULL) {
2347 os_free(mode->channels);
2349 return modes; /* Could not add 802.11b mode */
2352 for (i = 0; i < mode11g->num_rates; i++) {
2353 if (mode11g->rates[i].rate > 110 ||
2354 mode11g->rates[i].flags &
2355 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2357 mode->rates[mode->num_rates] = mode11g->rates[i];
2359 if (mode->num_rates == 4)
2363 if (mode->num_rates == 0) {
2364 os_free(mode->channels);
2365 os_free(mode->rates);
2367 return modes; /* No 802.11b rates */
2370 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2377 static struct hostapd_hw_modes *
2378 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2380 struct wpa_driver_nl80211_data *drv = priv;
2382 struct phy_info_arg result = {
2383 .num_modes = num_modes,
2390 msg = nlmsg_alloc();
2394 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2395 0, NL80211_CMD_GET_WIPHY, 0);
2397 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2399 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2400 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2406 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2407 const void *data, size_t len,
2411 0x00, 0x00, /* radiotap version */
2412 0x0e, 0x00, /* radiotap length */
2413 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2414 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2416 0x00, 0x00, /* RX and TX flags to indicate that */
2417 0x00, 0x00, /* this is the injected frame directly */
2419 struct iovec iov[2] = {
2421 .iov_base = &rtap_hdr,
2422 .iov_len = sizeof(rtap_hdr),
2425 .iov_base = (void *) data,
2429 struct msghdr msg = {
2434 .msg_control = NULL,
2435 .msg_controllen = 0,
2440 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2442 return sendmsg(drv->monitor_sock, &msg, 0);
2446 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2449 struct wpa_driver_nl80211_data *drv = priv;
2450 struct ieee80211_mgmt *mgmt;
2454 mgmt = (struct ieee80211_mgmt *) data;
2455 fc = le_to_host16(mgmt->frame_control);
2457 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2458 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2460 * Only one of the authentication frame types is encrypted.
2461 * In order for static WEP encryption to work properly (i.e.,
2462 * to not encrypt the frame), we need to tell mac80211 about
2463 * the frames that must not be encrypted.
2465 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2466 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2467 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2471 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2474 #endif /* CONFIG_AP || HOSTAPD */
2477 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2478 const u8 *head, size_t head_len,
2479 const u8 *tail, size_t tail_len,
2480 int dtim_period, int beacon_int)
2482 struct wpa_driver_nl80211_data *drv = priv;
2484 u8 cmd = NL80211_CMD_NEW_BEACON;
2487 int ifindex = if_nametoindex(ifname);
2489 struct i802_bss *bss;
2491 bss = get_bss(drv, ifindex);
2494 beacon_set = bss->beacon_set;
2496 beacon_set = drv->beacon_set;
2497 #endif /* HOSTAPD */
2499 msg = nlmsg_alloc();
2503 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2506 cmd = NL80211_CMD_SET_BEACON;
2508 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2510 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2511 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2512 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2513 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2514 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2516 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2518 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2519 ret, strerror(-ret));
2522 bss->beacon_set = 1;
2524 drv->beacon_set = 1;
2525 #endif /* HOSTAPD */
2533 #if defined(CONFIG_AP) || defined(HOSTAPD)
2535 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2536 int freq, int ht_enabled,
2537 int sec_channel_offset)
2542 msg = nlmsg_alloc();
2546 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2547 NL80211_CMD_SET_WIPHY, 0);
2549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2552 switch (sec_channel_offset) {
2554 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2555 NL80211_CHAN_HT40MINUS);
2558 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2559 NL80211_CHAN_HT40PLUS);
2562 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2568 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2571 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2572 "%d (%s)", freq, ret, strerror(-ret));
2578 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2579 struct hostapd_sta_add_params *params)
2581 struct wpa_driver_nl80211_data *drv = priv;
2585 msg = nlmsg_alloc();
2589 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2590 0, NL80211_CMD_NEW_STATION, 0);
2592 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2593 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2594 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2595 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2596 params->supp_rates);
2597 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2598 params->listen_interval);
2599 if (params->ht_capabilities) {
2600 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2601 sizeof(*params->ht_capabilities),
2602 params->ht_capabilities);
2605 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2607 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2608 "result: %d (%s)", ret, strerror(-ret));
2616 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2618 struct wpa_driver_nl80211_data *drv = priv;
2622 msg = nlmsg_alloc();
2626 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2627 0, NL80211_CMD_DEL_STATION, 0);
2629 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2630 if_nametoindex(drv->ifname));
2631 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2633 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2642 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2648 /* stop listening for EAPOL on this interface */
2649 del_ifidx(drv, ifidx);
2650 #endif /* HOSTAPD */
2652 msg = nlmsg_alloc();
2654 goto nla_put_failure;
2656 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2657 0, NL80211_CMD_DEL_INTERFACE, 0);
2658 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2660 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2663 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2668 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2670 enum nl80211_iftype iftype,
2673 struct nl_msg *msg, *flags = NULL;
2677 msg = nlmsg_alloc();
2681 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2682 0, NL80211_CMD_NEW_INTERFACE, 0);
2683 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2684 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2685 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2687 if (iftype == NL80211_IFTYPE_MONITOR) {
2690 flags = nlmsg_alloc();
2692 goto nla_put_failure;
2694 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2696 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2701 goto nla_put_failure;
2704 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2707 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2708 ifname, ret, strerror(-ret));
2712 ifidx = if_nametoindex(ifname);
2718 /* start listening for EAPOL on this interface */
2719 add_ifidx(drv, ifidx);
2721 if (addr && iftype == NL80211_IFTYPE_AP &&
2722 set_ifhwaddr(drv, ifname, addr)) {
2723 nl80211_remove_iface(drv, ifidx);
2726 #endif /* HOSTAPD */
2730 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2731 const char *ifname, enum nl80211_iftype iftype,
2736 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2738 /* if error occured and interface exists already */
2739 if (ret == -ENFILE && if_nametoindex(ifname)) {
2740 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2742 /* Try to remove the interface that was already there. */
2743 nl80211_remove_iface(drv, if_nametoindex(ifname));
2745 /* Try to create the interface again */
2746 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2752 #endif /* CONFIG_AP || HOSTAPD */
2756 void ap_tx_status(void *ctx, const u8 *addr,
2757 const u8 *buf, size_t len, int ack);
2758 void ap_rx_from_unknown_sta(void *ctx, struct ieee80211_hdr *hdr, size_t len);
2759 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2760 struct hostapd_frame_info *fi);
2761 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2763 #endif /* CONFIG_AP */
2765 #if defined(CONFIG_AP) || defined(HOSTAPD)
2767 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2769 struct ieee80211_hdr *hdr;
2770 u16 fc, type, stype;
2772 hdr = (struct ieee80211_hdr *) buf;
2773 fc = le_to_host16(hdr->frame_control);
2775 type = WLAN_FC_GET_TYPE(fc);
2776 stype = WLAN_FC_GET_STYPE(fc);
2779 case WLAN_FC_TYPE_MGMT:
2780 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2781 ok ? "ACK" : "fail");
2783 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2785 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
2786 #endif /* HOSTAPD */
2788 case WLAN_FC_TYPE_CTRL:
2789 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2790 ok ? "ACK" : "fail");
2792 case WLAN_FC_TYPE_DATA:
2794 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2796 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
2797 #endif /* HOSTAPD */
2800 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2807 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2808 struct ieee80211_hdr *hdr, size_t len)
2811 hostapd_rx_from_unknown_sta(drv->ctx, hdr, len);
2813 ap_rx_from_unknown_sta(drv->ctx, hdr, len);
2814 #endif /* HOSTAPD */
2818 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2819 u8 *buf, size_t len,
2820 struct hostapd_frame_info *hfi)
2822 struct ieee80211_hdr *hdr;
2825 hdr = (struct ieee80211_hdr *) buf;
2826 fc = le_to_host16(hdr->frame_control);
2827 stype = WLAN_FC_GET_STYPE(fc);
2829 switch (WLAN_FC_GET_TYPE(fc)) {
2830 case WLAN_FC_TYPE_MGMT:
2831 if (stype != WLAN_FC_STYPE_BEACON &&
2832 stype != WLAN_FC_STYPE_PROBE_REQ)
2833 wpa_printf(MSG_MSGDUMP, "MGMT");
2835 hostapd_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2837 ap_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2838 #endif /* HOSTAPD */
2840 case WLAN_FC_TYPE_CTRL:
2841 /* can only get here with PS-Poll frames */
2842 wpa_printf(MSG_DEBUG, "CTRL");
2843 from_unknown_sta(drv, hdr, len);
2845 case WLAN_FC_TYPE_DATA:
2846 from_unknown_sta(drv, hdr, len);
2852 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2854 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2856 unsigned char buf[3000];
2857 struct ieee80211_radiotap_iterator iter;
2859 struct hostapd_frame_info hfi;
2860 int injected = 0, failed = 0, rxflags = 0;
2862 len = recv(sock, buf, sizeof(buf), 0);
2868 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2869 printf("received invalid radiotap frame\n");
2873 memset(&hfi, 0, sizeof(hfi));
2876 ret = ieee80211_radiotap_iterator_next(&iter);
2880 printf("received invalid radiotap frame (%d)\n", ret);
2883 switch (iter.this_arg_index) {
2884 case IEEE80211_RADIOTAP_FLAGS:
2885 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2888 case IEEE80211_RADIOTAP_RX_FLAGS:
2891 case IEEE80211_RADIOTAP_TX_FLAGS:
2893 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2894 IEEE80211_RADIOTAP_F_TX_FAIL;
2896 case IEEE80211_RADIOTAP_DATA_RETRIES:
2898 case IEEE80211_RADIOTAP_CHANNEL:
2899 /* TODO convert from freq/flags to channel number
2904 case IEEE80211_RADIOTAP_RATE:
2905 hfi.datarate = *iter.this_arg * 5;
2907 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2908 hfi.ssi_signal = *iter.this_arg;
2913 if (rxflags && injected)
2917 handle_frame(drv, buf + iter.max_length,
2918 len - iter.max_length, &hfi);
2920 handle_tx_callback(drv->ctx, buf + iter.max_length,
2921 len - iter.max_length, !failed);
2926 * we post-process the filter code later and rewrite
2927 * this to the offset to the last instruction
2932 static struct sock_filter msock_filter_insns[] = {
2934 * do a little-endian load of the radiotap length field
2936 /* load lower byte into A */
2937 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2938 /* put it into X (== index register) */
2939 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2940 /* load upper byte into A */
2941 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2942 /* left-shift it by 8 */
2943 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2945 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2946 /* put result into X */
2947 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2950 * Allow management frames through, this also gives us those
2951 * management frames that we sent ourselves with status
2953 /* load the lower byte of the IEEE 802.11 frame control field */
2954 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2955 /* mask off frame type and version */
2956 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2957 /* accept frame if it's both 0, fall through otherwise */
2958 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2961 * TODO: add a bit to radiotap RX flags that indicates
2962 * that the sending station is not associated, then
2963 * add a filter here that filters on our DA and that flag
2964 * to allow us to deauth frames to that bad station.
2966 * Not a regression -- we didn't do it before either.
2971 * drop non-data frames, WDS frames
2973 /* load the lower byte of the frame control field */
2974 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2975 /* mask off QoS bit */
2976 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2977 /* drop non-data frames */
2978 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2979 /* load the upper byte of the frame control field */
2980 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2981 /* mask off toDS/fromDS */
2982 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2983 /* drop WDS frames */
2984 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2988 * add header length to index
2990 /* load the lower byte of the frame control field */
2991 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2992 /* mask off QoS bit */
2993 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2994 /* right shift it by 6 to give 0 or 2 */
2995 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2996 /* add data frame header length */
2997 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2998 /* add index, was start of 802.11 header */
2999 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3000 /* move to index, now start of LL header */
3001 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3004 * Accept empty data frames, we use those for
3007 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3008 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3011 * Accept EAPOL frames
3013 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3014 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3015 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3016 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3018 /* keep these last two statements or change the code below */
3019 /* return 0 == "DROP" */
3020 BPF_STMT(BPF_RET | BPF_K, 0),
3021 /* return ~0 == "keep all" */
3022 BPF_STMT(BPF_RET | BPF_K, ~0),
3025 static struct sock_fprog msock_filter = {
3026 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3027 .filter = msock_filter_insns,
3031 static int add_monitor_filter(int s)
3035 /* rewrite all PASS/FAIL jump offsets */
3036 for (idx = 0; idx < msock_filter.len; idx++) {
3037 struct sock_filter *insn = &msock_filter_insns[idx];
3039 if (BPF_CLASS(insn->code) == BPF_JMP) {
3040 if (insn->code == (BPF_JMP|BPF_JA)) {
3041 if (insn->k == PASS)
3042 insn->k = msock_filter.len - idx - 2;
3043 else if (insn->k == FAIL)
3044 insn->k = msock_filter.len - idx - 3;
3047 if (insn->jt == PASS)
3048 insn->jt = msock_filter.len - idx - 2;
3049 else if (insn->jt == FAIL)
3050 insn->jt = msock_filter.len - idx - 3;
3052 if (insn->jf == PASS)
3053 insn->jf = msock_filter.len - idx - 2;
3054 else if (insn->jf == FAIL)
3055 insn->jf = msock_filter.len - idx - 3;
3059 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3060 &msock_filter, sizeof(msock_filter))) {
3061 perror("SO_ATTACH_FILTER");
3069 static void nl80211_remove_monitor_interface(
3070 struct wpa_driver_nl80211_data *drv)
3072 if (drv->monitor_ifidx >= 0) {
3073 nl80211_remove_iface(drv, drv->monitor_ifidx);
3074 drv->monitor_ifidx = -1;
3080 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3083 struct sockaddr_ll ll;
3087 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3088 buf[IFNAMSIZ - 1] = '\0';
3090 drv->monitor_ifidx =
3091 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
3093 if (drv->monitor_ifidx < 0)
3096 if (hostapd_set_iface_flags(drv, buf, 1))
3099 memset(&ll, 0, sizeof(ll));
3100 ll.sll_family = AF_PACKET;
3101 ll.sll_ifindex = drv->monitor_ifidx;
3102 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3103 if (drv->monitor_sock < 0) {
3104 perror("socket[PF_PACKET,SOCK_RAW]");
3108 if (add_monitor_filter(drv->monitor_sock)) {
3109 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3110 "interface; do filtering in user space");
3111 /* This works, but will cost in performance. */
3114 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3115 perror("monitor socket bind");
3119 optlen = sizeof(optval);
3122 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3123 perror("Failed to set socket priority");
3127 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3129 printf("Could not register monitor read socket\n");
3135 nl80211_remove_monitor_interface(drv);
3140 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3142 static int wpa_driver_nl80211_hapd_send_eapol(
3143 void *priv, const u8 *addr, const u8 *data,
3144 size_t data_len, int encrypt, const u8 *own_addr)
3146 struct wpa_driver_nl80211_data *drv = priv;
3147 struct ieee80211_hdr *hdr;
3152 int qos = sta->flags & WLAN_STA_WME;
3157 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3159 hdr = os_zalloc(len);
3161 printf("malloc() failed for i802_send_data(len=%lu)\n",
3162 (unsigned long) len);
3166 hdr->frame_control =
3167 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3168 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3170 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3171 #if 0 /* To be enabled if qos determination is added above */
3173 hdr->frame_control |=
3174 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3178 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3179 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3180 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3181 pos = (u8 *) (hdr + 1);
3183 #if 0 /* To be enabled if qos determination is added above */
3185 /* add an empty QoS header if needed */
3192 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3193 pos += sizeof(rfc1042_header);
3194 WPA_PUT_BE16(pos, ETH_P_PAE);
3196 memcpy(pos, data, data_len);
3198 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3200 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3202 (unsigned long) len, errno, strerror(errno));
3210 static u32 sta_flags_nl80211(int flags)
3214 if (flags & WLAN_STA_AUTHORIZED)
3215 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3216 if (flags & WLAN_STA_WMM)
3217 f |= BIT(NL80211_STA_FLAG_WME);
3218 if (flags & WLAN_STA_SHORT_PREAMBLE)
3219 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3220 if (flags & WLAN_STA_MFP)
3221 f |= BIT(NL80211_STA_FLAG_MFP);
3227 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3228 int total_flags, int flags_or,
3231 struct wpa_driver_nl80211_data *drv = priv;
3232 struct nl_msg *msg, *flags = NULL;
3233 struct nl80211_sta_flag_update upd;
3235 msg = nlmsg_alloc();
3239 flags = nlmsg_alloc();
3245 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3246 0, NL80211_CMD_SET_STATION, 0);
3248 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3249 if_nametoindex(drv->ifname));
3250 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3253 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3254 * can be removed eventually.
3256 if (total_flags & WLAN_STA_AUTHORIZED)
3257 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3259 if (total_flags & WLAN_STA_WMM)
3260 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3262 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3263 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3265 if (total_flags & WLAN_STA_MFP)
3266 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3268 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3269 goto nla_put_failure;
3271 os_memset(&upd, 0, sizeof(upd));
3272 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3273 upd.set = sta_flags_nl80211(flags_or);
3274 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3278 return send_and_recv_msgs(drv, msg, NULL, NULL);
3284 #endif /* CONFIG_AP || HOSTAPD */
3288 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3289 struct wpa_driver_associate_params *params)
3291 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3292 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3293 nl80211_remove_monitor_interface(drv);
3297 /* TODO: setup monitor interface (and add code somewhere to remove this
3298 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3302 #endif /* CONFIG_AP */
3305 static int wpa_driver_nl80211_connect(
3306 struct wpa_driver_nl80211_data *drv,
3307 struct wpa_driver_associate_params *params)
3310 enum nl80211_auth_type type;
3313 msg = nlmsg_alloc();
3317 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3318 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3319 NL80211_CMD_CONNECT, 0);
3321 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3322 if (params->bssid) {
3323 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3324 MAC2STR(params->bssid));
3325 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3328 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3329 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3332 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3333 params->ssid, params->ssid_len);
3334 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3336 if (params->ssid_len > sizeof(drv->ssid))
3337 goto nla_put_failure;
3338 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3339 drv->ssid_len = params->ssid_len;
3341 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3343 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3346 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3347 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3348 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3349 type = NL80211_AUTHTYPE_SHARED_KEY;
3350 else if (params->auth_alg & AUTH_ALG_LEAP)
3351 type = NL80211_AUTHTYPE_NETWORK_EAP;
3352 else if (params->auth_alg & AUTH_ALG_FT)
3353 type = NL80211_AUTHTYPE_FT;
3355 goto nla_put_failure;
3357 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3358 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3360 if (params->wpa_ie && params->wpa_ie_len) {
3361 enum nl80211_wpa_versions ver;
3363 if (params->wpa_ie[0] == WLAN_EID_RSN)
3364 ver = NL80211_WPA_VERSION_2;
3366 ver = NL80211_WPA_VERSION_1;
3368 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3369 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3372 if (params->pairwise_suite != CIPHER_NONE) {
3375 switch (params->pairwise_suite) {
3377 cipher = WLAN_CIPHER_SUITE_WEP40;
3380 cipher = WLAN_CIPHER_SUITE_WEP104;
3383 cipher = WLAN_CIPHER_SUITE_CCMP;
3387 cipher = WLAN_CIPHER_SUITE_TKIP;
3390 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3393 if (params->group_suite != CIPHER_NONE) {
3396 switch (params->group_suite) {
3398 cipher = WLAN_CIPHER_SUITE_WEP40;
3401 cipher = WLAN_CIPHER_SUITE_WEP104;
3404 cipher = WLAN_CIPHER_SUITE_CCMP;
3408 cipher = WLAN_CIPHER_SUITE_TKIP;
3411 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3414 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3415 params->key_mgmt_suite == KEY_MGMT_PSK) {
3416 int mgmt = WLAN_AKM_SUITE_PSK;
3418 switch (params->key_mgmt_suite) {
3419 case KEY_MGMT_802_1X:
3420 mgmt = WLAN_AKM_SUITE_8021X;
3424 mgmt = WLAN_AKM_SUITE_PSK;
3427 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3430 ret = nl80211_set_conn_keys(params, msg);
3432 goto nla_put_failure;
3434 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3437 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3438 "(%s)", ret, strerror(-ret));
3439 goto nla_put_failure;
3442 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3451 static int wpa_driver_nl80211_associate(
3452 void *priv, struct wpa_driver_associate_params *params)
3454 struct wpa_driver_nl80211_data *drv = priv;
3459 if (params->mode == 2)
3460 return wpa_driver_nl80211_ap(drv, params);
3461 #endif /* CONFIG_AP */
3463 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3464 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3466 return wpa_driver_nl80211_connect(drv, params);
3469 drv->associated = 0;
3471 msg = nlmsg_alloc();
3475 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3477 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3478 NL80211_CMD_ASSOCIATE, 0);
3480 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3481 if (params->bssid) {
3482 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3483 MAC2STR(params->bssid));
3484 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3487 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3488 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3491 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3492 params->ssid, params->ssid_len);
3493 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3495 if (params->ssid_len > sizeof(drv->ssid))
3496 goto nla_put_failure;
3497 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3498 drv->ssid_len = params->ssid_len;
3500 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3502 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3505 #ifdef CONFIG_IEEE80211W
3506 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3507 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3508 #endif /* CONFIG_IEEE80211W */
3510 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3512 if (params->prev_bssid) {
3513 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3514 MAC2STR(params->prev_bssid));
3515 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3516 params->prev_bssid);
3519 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3522 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3523 "(%s)", ret, strerror(-ret));
3524 goto nla_put_failure;
3527 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3536 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3537 int ifindex, int mode)
3542 msg = nlmsg_alloc();
3546 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3547 0, NL80211_CMD_SET_INTERFACE, 0);
3548 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3549 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3551 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3555 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3556 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3561 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3563 struct wpa_driver_nl80211_data *drv = priv;
3569 nlmode = NL80211_IFTYPE_STATION;
3572 nlmode = NL80211_IFTYPE_ADHOC;
3575 nlmode = NL80211_IFTYPE_AP;
3581 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3582 drv->nlmode = nlmode;
3587 if (nlmode == drv->nlmode) {
3589 goto done; /* Already in the requested mode */
3592 /* mac80211 doesn't allow mode changes while the device is up, so
3593 * take the device down, try to set the mode again, and bring the
3596 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3597 /* Try to set the mode again while the interface is down */
3598 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3599 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3604 drv->nlmode = nlmode;
3607 #if defined(CONFIG_AP) || defined(HOSTAPD)
3608 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3609 /* Setup additional AP mode functionality if needed */
3610 if (drv->monitor_ifidx < 0 &&
3611 nl80211_create_monitor_interface(drv))
3613 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3614 /* Remove additional AP mode functionality */
3615 nl80211_remove_monitor_interface(drv);
3617 #endif /* CONFIG_AP || HOSTAPD */
3623 static int wpa_driver_nl80211_get_capa(void *priv,
3624 struct wpa_driver_capa *capa)
3626 struct wpa_driver_nl80211_data *drv = priv;
3627 if (!drv->has_capability)
3629 os_memcpy(capa, &drv->capa, sizeof(*capa));
3634 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3636 struct wpa_driver_nl80211_data *drv = priv;
3638 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3639 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3640 drv->operstate = state;
3641 return wpa_driver_nl80211_send_oper_ifla(
3642 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3646 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3648 struct wpa_driver_nl80211_data *drv = priv;
3650 struct nl80211_sta_flag_update upd;
3652 msg = nlmsg_alloc();
3656 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3657 0, NL80211_CMD_SET_STATION, 0);
3659 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3660 if_nametoindex(drv->ifname));
3661 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3663 os_memset(&upd, 0, sizeof(upd));
3664 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3666 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3667 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3669 return send_and_recv_msgs(drv, msg, NULL, NULL);
3677 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3680 struct i802_bss *bss = &drv->bss;
3682 if (ifindex == bss->ifindex)
3686 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3691 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3696 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3698 for (i = 0; i < drv->num_if_indices; i++) {
3699 if (drv->if_indices[i] == 0) {
3700 drv->if_indices[i] = ifidx;
3705 if (drv->if_indices != drv->default_if_indices)
3706 old = drv->if_indices;
3710 drv->if_indices = realloc(old,
3711 sizeof(int) * (drv->num_if_indices + 1));
3712 if (!drv->if_indices) {
3714 drv->if_indices = drv->default_if_indices;
3716 drv->if_indices = old;
3717 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3719 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3722 drv->if_indices[drv->num_if_indices] = ifidx;
3723 drv->num_if_indices++;
3727 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3731 for (i = 0; i < drv->num_if_indices; i++) {
3732 if (drv->if_indices[i] == ifidx) {
3733 drv->if_indices[i] = 0;
3740 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3744 for (i = 0; i < drv->num_if_indices; i++)
3745 if (drv->if_indices[i] == ifidx)
3752 static inline int min_int(int a, int b)
3760 static int get_key_handler(struct nl_msg *msg, void *arg)
3762 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3763 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3765 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3766 genlmsg_attrlen(gnlh, 0), NULL);
3769 * TODO: validate the key index and mac address!
3770 * Otherwise, there's a race condition as soon as
3771 * the kernel starts sending key notifications.
3774 if (tb[NL80211_ATTR_KEY_SEQ])
3775 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3776 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3781 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3784 struct wpa_driver_nl80211_data *drv = priv;
3787 msg = nlmsg_alloc();
3791 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3792 0, NL80211_CMD_GET_KEY, 0);
3795 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3796 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3797 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3801 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3807 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3810 struct wpa_driver_nl80211_data *drv = priv;
3812 u8 rates[NL80211_MAX_SUPP_RATES];
3816 msg = nlmsg_alloc();
3820 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3821 NL80211_CMD_SET_BSS, 0);
3823 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3824 rates[rates_len++] = basic_rates[i] / 5;
3826 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3828 /* TODO: multi-BSS support */
3829 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3831 return send_and_recv_msgs(drv, msg, NULL, NULL);
3837 /* Set kernel driver on given frequency (MHz) */
3838 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3840 struct wpa_driver_nl80211_data *drv = priv;
3841 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3842 freq->sec_channel_offset);
3846 static int i802_set_rts(void *priv, int rts)
3848 struct wpa_driver_nl80211_data *drv = priv;
3853 msg = nlmsg_alloc();
3862 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3863 0, NL80211_CMD_SET_WIPHY, 0);
3864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3865 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3867 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3871 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3872 "%d (%s)", rts, ret, strerror(-ret));
3877 static int i802_set_frag(void *priv, int frag)
3879 struct wpa_driver_nl80211_data *drv = priv;
3884 msg = nlmsg_alloc();
3893 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3894 0, NL80211_CMD_SET_WIPHY, 0);
3895 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3896 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3898 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3902 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3903 "%d: %d (%s)", frag, ret, strerror(-ret));
3908 static int i802_flush(void *priv)
3910 struct wpa_driver_nl80211_data *drv = priv;
3913 msg = nlmsg_alloc();
3917 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3918 0, NL80211_CMD_DEL_STATION, 0);
3921 * XXX: FIX! this needs to flush all VLANs too
3923 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3924 if_nametoindex(drv->ifname));
3926 return send_and_recv_msgs(drv, msg, NULL, NULL);
3932 static int get_sta_handler(struct nl_msg *msg, void *arg)
3934 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3935 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3936 struct hostap_sta_driver_data *data = arg;
3937 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3938 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3939 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3940 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3941 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3942 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3943 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3946 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3947 genlmsg_attrlen(gnlh, 0), NULL);
3950 * TODO: validate the interface and mac address!
3951 * Otherwise, there's a race condition as soon as
3952 * the kernel starts sending station notifications.
3955 if (!tb[NL80211_ATTR_STA_INFO]) {
3956 wpa_printf(MSG_DEBUG, "sta stats missing!");
3959 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3960 tb[NL80211_ATTR_STA_INFO],
3962 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3966 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3967 data->inactive_msec =
3968 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3969 if (stats[NL80211_STA_INFO_RX_BYTES])
3970 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3971 if (stats[NL80211_STA_INFO_TX_BYTES])
3972 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3973 if (stats[NL80211_STA_INFO_RX_PACKETS])
3975 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3976 if (stats[NL80211_STA_INFO_TX_PACKETS])
3978 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3983 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3986 struct wpa_driver_nl80211_data *drv = priv;
3989 os_memset(data, 0, sizeof(*data));
3990 msg = nlmsg_alloc();
3994 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3995 0, NL80211_CMD_GET_STATION, 0);
3997 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4000 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4006 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4007 int cw_min, int cw_max, int burst_time)
4009 struct wpa_driver_nl80211_data *drv = priv;
4011 struct nlattr *txq, *params;
4013 msg = nlmsg_alloc();
4017 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4018 0, NL80211_CMD_SET_WIPHY, 0);
4020 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4022 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4024 goto nla_put_failure;
4026 /* We are only sending parameters for a single TXQ at a time */
4027 params = nla_nest_start(msg, 1);
4029 goto nla_put_failure;
4031 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4032 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4033 * 32 usec, so need to convert the value here. */
4034 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4035 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4036 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4037 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4039 nla_nest_end(msg, params);
4041 nla_nest_end(msg, txq);
4043 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4050 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
4052 struct wpa_driver_nl80211_data *drv = priv;
4054 struct i802_bss *bss;
4056 bss = os_zalloc(sizeof(*bss));
4060 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
4065 bss->ifindex = ifidx;
4066 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4067 nl80211_remove_iface(priv, ifidx);
4071 bss->next = drv->bss.next;
4072 drv->bss.next = bss;
4077 static int i802_bss_remove(void *priv, const char *ifname)
4079 struct wpa_driver_nl80211_data *drv = priv;
4080 struct i802_bss *bss, *prev;
4081 int ifindex = if_nametoindex(ifname);
4082 nl80211_remove_iface(priv, ifindex);
4084 bss = drv->bss.next;
4086 if (ifindex == bss->ifindex) {
4087 prev->next = bss->next;
4098 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4100 struct wpa_driver_nl80211_data *drv = priv;
4103 msg = nlmsg_alloc();
4107 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4108 NL80211_CMD_SET_BSS, 0);
4111 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4113 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4115 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4117 /* TODO: multi-BSS support */
4118 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4120 return send_and_recv_msgs(drv, msg, NULL, NULL);
4126 static int i802_set_cts_protect(void *priv, int value)
4128 return i802_set_bss(priv, value, -1, -1);
4132 static int i802_set_preamble(void *priv, int value)
4134 return i802_set_bss(priv, -1, value, -1);
4138 static int i802_set_short_slot_time(void *priv, int value)
4140 return i802_set_bss(priv, -1, -1, value);
4144 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
4147 case HOSTAPD_IF_VLAN:
4148 return NL80211_IFTYPE_AP_VLAN;
4154 static int i802_if_add(const char *iface, void *priv,
4155 enum hostapd_driver_if_type type, char *ifname,
4158 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
4164 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
4165 char *ifname, const u8 *addr)
4167 /* unused at the moment */
4172 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
4173 const char *ifname, const u8 *addr)
4175 nl80211_remove_iface(priv, if_nametoindex(ifname));
4180 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4181 const char *ifname, int vlan_id)
4183 struct wpa_driver_nl80211_data *drv = priv;
4186 msg = nlmsg_alloc();
4190 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4191 0, NL80211_CMD_SET_STATION, 0);
4193 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4194 if_nametoindex(drv->ifname));
4195 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4196 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4197 if_nametoindex(ifname));
4199 return send_and_recv_msgs(drv, msg, NULL, NULL);
4205 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4207 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4208 struct sockaddr_ll lladdr;
4209 unsigned char buf[3000];
4211 socklen_t fromlen = sizeof(lladdr);
4213 len = recvfrom(sock, buf, sizeof(buf), 0,
4214 (struct sockaddr *)&lladdr, &fromlen);
4220 if (have_ifidx(drv, lladdr.sll_ifindex)) {
4222 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
4225 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
4230 static int i802_get_inact_sec(void *priv, const u8 *addr)
4232 struct hostap_sta_driver_data data;
4235 data.inactive_msec = (unsigned long) -1;
4236 ret = i802_read_sta_data(priv, &data, addr);
4237 if (ret || data.inactive_msec == (unsigned long) -1)
4239 return data.inactive_msec / 1000;
4243 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4252 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4255 struct wpa_driver_nl80211_data *drv = priv;
4256 struct ieee80211_mgmt mgmt;
4258 memset(&mgmt, 0, sizeof(mgmt));
4259 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4260 WLAN_FC_STYPE_DEAUTH);
4261 memcpy(mgmt.da, addr, ETH_ALEN);
4262 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4263 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4264 mgmt.u.deauth.reason_code = host_to_le16(reason);
4265 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4267 sizeof(mgmt.u.deauth));
4271 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4274 struct wpa_driver_nl80211_data *drv = priv;
4275 struct ieee80211_mgmt mgmt;
4277 memset(&mgmt, 0, sizeof(mgmt));
4278 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4279 WLAN_FC_STYPE_DISASSOC);
4280 memcpy(mgmt.da, addr, ETH_ALEN);
4281 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4282 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4283 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4284 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4286 sizeof(mgmt.u.disassoc));
4290 static void *i802_init(struct hostapd_data *hapd,
4291 struct wpa_init_params *params)
4293 struct wpa_driver_nl80211_data *drv;
4296 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4300 drv->bss.ifindex = drv->ifindex;
4302 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4303 drv->if_indices = drv->default_if_indices;
4304 for (i = 0; i < params->num_bridge; i++) {
4305 if (params->bridge[i])
4306 add_ifidx(drv, if_nametoindex(params->bridge[i]));
4309 /* start listening for EAPOL on the default AP interface */
4310 add_ifidx(drv, drv->ifindex);
4312 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4315 if (params->bssid) {
4316 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4320 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4321 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4322 "into AP mode", drv->ifname);
4326 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4329 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4330 if (drv->eapol_sock < 0) {
4331 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4335 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4337 printf("Could not register read socket for eapol\n");
4341 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4347 nl80211_remove_monitor_interface(drv);
4348 if (drv->ioctl_sock >= 0)
4349 close(drv->ioctl_sock);
4351 genl_family_put(drv->nl80211);
4352 nl_cache_free(drv->nl_cache);
4353 nl_handle_destroy(drv->nl_handle);
4354 nl_cb_put(drv->nl_cb);
4361 static void i802_deinit(void *priv)
4363 wpa_driver_nl80211_deinit(priv);
4366 #endif /* HOSTAPD */
4369 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4371 .desc = "Linux nl80211/cfg80211",
4372 .get_bssid = wpa_driver_nl80211_get_bssid,
4373 .get_ssid = wpa_driver_nl80211_get_ssid,
4374 .set_key = wpa_driver_nl80211_set_key,
4375 .scan2 = wpa_driver_nl80211_scan,
4376 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4377 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4378 .disassociate = wpa_driver_nl80211_disassociate,
4379 .authenticate = wpa_driver_nl80211_authenticate,
4380 .associate = wpa_driver_nl80211_associate,
4381 .init = wpa_driver_nl80211_init,
4382 .deinit = wpa_driver_nl80211_deinit,
4383 .get_capa = wpa_driver_nl80211_get_capa,
4384 .set_operstate = wpa_driver_nl80211_set_operstate,
4385 .set_supp_port = wpa_driver_nl80211_set_supp_port,
4386 .set_country = wpa_driver_nl80211_set_country,
4387 .set_beacon = wpa_driver_nl80211_set_beacon,
4388 #if defined(CONFIG_AP) || defined(HOSTAPD)
4389 .send_mlme = wpa_driver_nl80211_send_mlme,
4390 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4391 .sta_add = wpa_driver_nl80211_sta_add,
4392 .sta_remove = wpa_driver_nl80211_sta_remove,
4393 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4394 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4395 #endif /* CONFIG_AP || HOSTAPD */
4397 .hapd_init = i802_init,
4398 .hapd_deinit = i802_deinit,
4399 .get_seqnum = i802_get_seqnum,
4400 .flush = i802_flush,
4401 .read_sta_data = i802_read_sta_data,
4402 .sta_deauth = i802_sta_deauth,
4403 .sta_disassoc = i802_sta_disassoc,
4404 .get_inact_sec = i802_get_inact_sec,
4405 .sta_clear_stats = i802_sta_clear_stats,
4406 .set_freq = i802_set_freq,
4407 .set_rts = i802_set_rts,
4408 .set_frag = i802_set_frag,
4409 .set_rate_sets = i802_set_rate_sets,
4410 .set_cts_protect = i802_set_cts_protect,
4411 .set_preamble = i802_set_preamble,
4412 .set_short_slot_time = i802_set_short_slot_time,
4413 .set_tx_queue_params = i802_set_tx_queue_params,
4414 .bss_add = i802_bss_add,
4415 .bss_remove = i802_bss_remove,
4416 .if_add = i802_if_add,
4417 .if_update = i802_if_update,
4418 .if_remove = i802_if_remove,
4419 .set_sta_vlan = i802_set_sta_vlan,
4420 #endif /* HOSTAPD */