2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009-2010, Atheros Communications
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * Alternatively, this software may be distributed under the terms of BSD
16 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
22 #include <netlink/genl/genl.h>
23 #include <netlink/genl/family.h>
24 #include <netlink/genl/ctrl.h>
25 #include <linux/rtnetlink.h>
26 #include <netpacket/packet.h>
27 #include <linux/filter.h>
28 #include "nl80211_copy.h"
32 #include "common/ieee802_11_defs.h"
34 #include "linux_ioctl.h"
36 #include "radiotap_iter.h"
41 /* libnl 2.0 compatibility code */
42 #define nl_handle nl_sock
43 #define nl80211_handle_alloc nl_socket_alloc_cb
44 #define nl80211_handle_destroy nl_socket_free
47 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
48 * but when you free a socket again it will mess up its bitmap and
49 * and use the wrong number the next time it needs a socket ID.
50 * Therefore, we wrap the handle alloc/destroy and add our own pid
53 static uint32_t port_bitmap[32] = { 0 };
55 static struct nl_handle *nl80211_handle_alloc(void *cb)
57 struct nl_handle *handle;
58 uint32_t pid = getpid() & 0x3FFFFF;
61 handle = nl_handle_alloc_cb(cb);
63 for (i = 0; i < 1024; i++) {
64 if (port_bitmap[i / 32] & (1 << (i % 32)))
66 port_bitmap[i / 32] |= 1 << (i % 32);
71 nl_socket_set_local_port(handle, pid);
76 static void nl80211_handle_destroy(struct nl_handle *handle)
78 uint32_t port = nl_socket_get_local_port(handle);
81 port_bitmap[port / 32] &= ~(1 << (port % 32));
83 nl_handle_destroy(handle);
85 #endif /* CONFIG_LIBNL20 */
89 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
92 #define IFF_DORMANT 0x20000 /* driver signals dormant */
95 #ifndef IF_OPER_DORMANT
96 #define IF_OPER_DORMANT 5
103 struct wpa_driver_nl80211_data *drv;
104 struct i802_bss *next;
106 char ifname[IFNAMSIZ + 1];
107 unsigned int beacon_set:1;
110 struct wpa_driver_nl80211_data {
112 struct netlink_data *netlink;
113 int ioctl_sock; /* socket for ioctl() use */
114 char brname[IFNAMSIZ];
118 struct rfkill_data *rfkill;
119 struct wpa_driver_capa capa;
124 int scan_complete_events;
126 struct nl_handle *nl_handle;
127 struct nl_handle *nl_handle_event;
128 struct nl_cache *nl_cache;
129 struct nl_cache *nl_cache_event;
131 struct genl_family *nl80211;
133 u8 auth_bssid[ETH_ALEN];
139 int ap_scan_as_station;
140 unsigned int assoc_freq;
144 int probe_req_report;
145 int disable_11b_rates;
147 unsigned int pending_remain_on_chan:1;
148 unsigned int added_bridge:1;
149 unsigned int added_if_into_bridge:1;
151 u64 remain_on_chan_cookie;
152 u64 send_action_cookie;
154 struct wpa_driver_scan_filter *filter_ssids;
155 size_t num_filter_ssids;
157 struct i802_bss first_bss;
160 int eapol_sock; /* socket for EAPOL frames */
162 int default_if_indices[16];
172 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
174 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
176 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
177 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
178 const u8 *addr, int cmd, u16 reason_code,
179 int local_state_change);
180 static void nl80211_remove_monitor_interface(
181 struct wpa_driver_nl80211_data *drv);
184 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
185 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
186 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
187 static int wpa_driver_nl80211_if_remove(void *priv,
188 enum wpa_driver_if_type type,
191 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
197 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
198 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
200 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
201 int ifindex, int disabled);
205 static int ack_handler(struct nl_msg *msg, void *arg)
212 static int finish_handler(struct nl_msg *msg, void *arg)
219 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
228 static int no_seq_check(struct nl_msg *msg, void *arg)
234 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
235 struct nl_handle *nl_handle, struct nl_msg *msg,
236 int (*valid_handler)(struct nl_msg *, void *),
242 cb = nl_cb_clone(drv->nl_cb);
246 err = nl_send_auto_complete(nl_handle, msg);
252 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
253 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
254 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
257 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
258 valid_handler, valid_data);
261 nl_recvmsgs(nl_handle, cb);
269 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
271 int (*valid_handler)(struct nl_msg *, void *),
274 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
285 static int family_handler(struct nl_msg *msg, void *arg)
287 struct family_data *res = arg;
288 struct nlattr *tb[CTRL_ATTR_MAX + 1];
289 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
290 struct nlattr *mcgrp;
293 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
294 genlmsg_attrlen(gnlh, 0), NULL);
295 if (!tb[CTRL_ATTR_MCAST_GROUPS])
298 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
299 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
300 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
301 nla_len(mcgrp), NULL);
302 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
303 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
304 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
306 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
308 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
316 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
317 const char *family, const char *group)
321 struct family_data res = { group, -ENOENT };
326 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
327 0, 0, CTRL_CMD_GETFAMILY, 0);
328 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
330 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
341 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
343 struct i802_bss *bss = priv;
344 struct wpa_driver_nl80211_data *drv = bss->drv;
345 if (!drv->associated)
347 os_memcpy(bssid, drv->bssid, ETH_ALEN);
352 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
354 struct i802_bss *bss = priv;
355 struct wpa_driver_nl80211_data *drv = bss->drv;
356 if (!drv->associated)
358 os_memcpy(ssid, drv->ssid, drv->ssid_len);
359 return drv->ssid_len;
363 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
364 char *buf, size_t len, int del)
366 union wpa_event_data event;
368 os_memset(&event, 0, sizeof(event));
369 if (len > sizeof(event.interface_status.ifname))
370 len = sizeof(event.interface_status.ifname) - 1;
371 os_memcpy(event.interface_status.ifname, buf, len);
372 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
373 EVENT_INTERFACE_ADDED;
375 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
377 event.interface_status.ifname,
378 del ? "removed" : "added");
380 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
387 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
391 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
394 int attrlen, rta_len;
398 attr = (struct rtattr *) buf;
400 rta_len = RTA_ALIGN(sizeof(struct rtattr));
401 while (RTA_OK(attr, attrlen)) {
402 if (attr->rta_type == IFLA_IFNAME) {
403 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
409 attr = RTA_NEXT(attr, attrlen);
416 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
417 int ifindex, u8 *buf, size_t len)
419 if (drv->ifindex == ifindex)
422 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
423 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
424 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
426 wpa_driver_nl80211_finish_drv_init(drv);
434 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
435 struct ifinfomsg *ifi,
438 struct wpa_driver_nl80211_data *drv = ctx;
439 int attrlen, rta_len;
443 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
444 !have_ifidx(drv, ifi->ifi_index)) {
445 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
446 "ifindex %d", ifi->ifi_index);
450 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
452 drv->operstate, ifi->ifi_flags,
453 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
454 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
455 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
456 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
458 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
459 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
460 drv->if_disabled = 1;
461 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
464 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
465 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
466 drv->if_disabled = 0;
467 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
471 * Some drivers send the association event before the operup event--in
472 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
473 * fails. This will hit us when wpa_supplicant does not need to do
474 * IEEE 802.1X authentication
476 if (drv->operstate == 1 &&
477 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
478 !(ifi->ifi_flags & IFF_RUNNING))
479 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
483 attr = (struct rtattr *) buf;
484 rta_len = RTA_ALIGN(sizeof(struct rtattr));
485 while (RTA_OK(attr, attrlen)) {
486 if (attr->rta_type == IFLA_IFNAME) {
487 wpa_driver_nl80211_event_link(
489 ((char *) attr) + rta_len,
490 attr->rta_len - rta_len, 0);
491 } else if (attr->rta_type == IFLA_MASTER)
492 brid = nla_get_u32((struct nlattr *) attr);
493 attr = RTA_NEXT(attr, attrlen);
497 if (ifi->ifi_family == AF_BRIDGE && brid) {
498 /* device has been added to bridge */
499 char namebuf[IFNAMSIZ];
500 if_indextoname(brid, namebuf);
501 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
503 add_ifidx(drv, brid);
509 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
510 struct ifinfomsg *ifi,
513 struct wpa_driver_nl80211_data *drv = ctx;
514 int attrlen, rta_len;
519 attr = (struct rtattr *) buf;
521 rta_len = RTA_ALIGN(sizeof(struct rtattr));
522 while (RTA_OK(attr, attrlen)) {
523 if (attr->rta_type == IFLA_IFNAME) {
524 wpa_driver_nl80211_event_link(
526 ((char *) attr) + rta_len,
527 attr->rta_len - rta_len, 1);
528 } else if (attr->rta_type == IFLA_MASTER)
529 brid = nla_get_u32((struct nlattr *) attr);
530 attr = RTA_NEXT(attr, attrlen);
534 if (ifi->ifi_family == AF_BRIDGE && brid) {
535 /* device has been removed from bridge */
536 char namebuf[IFNAMSIZ];
537 if_indextoname(brid, namebuf);
538 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
539 "%s", brid, namebuf);
540 del_ifidx(drv, brid);
546 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
547 const u8 *frame, size_t len)
549 const struct ieee80211_mgmt *mgmt;
550 union wpa_event_data event;
552 mgmt = (const struct ieee80211_mgmt *) frame;
553 if (len < 24 + sizeof(mgmt->u.auth)) {
554 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
559 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
560 os_memset(&event, 0, sizeof(event));
561 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
562 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
563 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
564 if (len > 24 + sizeof(mgmt->u.auth)) {
565 event.auth.ies = mgmt->u.auth.variable;
566 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
569 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
573 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
574 const u8 *frame, size_t len)
576 const struct ieee80211_mgmt *mgmt;
577 union wpa_event_data event;
580 mgmt = (const struct ieee80211_mgmt *) frame;
581 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
582 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
587 status = le_to_host16(mgmt->u.assoc_resp.status_code);
588 if (status != WLAN_STATUS_SUCCESS) {
589 os_memset(&event, 0, sizeof(event));
590 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
591 event.assoc_reject.resp_ies =
592 (u8 *) mgmt->u.assoc_resp.variable;
593 event.assoc_reject.resp_ies_len =
594 len - 24 - sizeof(mgmt->u.assoc_resp);
596 event.assoc_reject.status_code = status;
598 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
603 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
605 os_memset(&event, 0, sizeof(event));
606 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
607 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
608 event.assoc_info.resp_ies_len =
609 len - 24 - sizeof(mgmt->u.assoc_resp);
612 event.assoc_info.freq = drv->assoc_freq;
614 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
618 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
619 enum nl80211_commands cmd, struct nlattr *status,
620 struct nlattr *addr, struct nlattr *req_ie,
621 struct nlattr *resp_ie)
623 union wpa_event_data event;
625 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
627 * Avoid reporting two association events that would confuse
630 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
631 "when using userspace SME", cmd);
635 os_memset(&event, 0, sizeof(event));
636 if (cmd == NL80211_CMD_CONNECT &&
637 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
639 event.assoc_reject.resp_ies = nla_data(resp_ie);
640 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
642 event.assoc_reject.status_code = nla_get_u16(status);
643 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
649 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
652 event.assoc_info.req_ies = nla_data(req_ie);
653 event.assoc_info.req_ies_len = nla_len(req_ie);
656 event.assoc_info.resp_ies = nla_data(resp_ie);
657 event.assoc_info.resp_ies_len = nla_len(resp_ie);
660 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
664 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
665 enum nl80211_commands cmd, struct nlattr *addr)
667 union wpa_event_data event;
668 enum wpa_event_type ev;
670 if (nla_len(addr) != ETH_ALEN)
673 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
674 cmd, MAC2STR((u8 *) nla_data(addr)));
676 if (cmd == NL80211_CMD_AUTHENTICATE)
677 ev = EVENT_AUTH_TIMED_OUT;
678 else if (cmd == NL80211_CMD_ASSOCIATE)
679 ev = EVENT_ASSOC_TIMED_OUT;
683 os_memset(&event, 0, sizeof(event));
684 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
685 wpa_supplicant_event(drv->ctx, ev, &event);
689 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
690 struct nlattr *freq, const u8 *frame, size_t len)
692 const struct ieee80211_mgmt *mgmt;
693 union wpa_event_data event;
696 mgmt = (const struct ieee80211_mgmt *) frame;
698 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
702 fc = le_to_host16(mgmt->frame_control);
703 stype = WLAN_FC_GET_STYPE(fc);
705 os_memset(&event, 0, sizeof(event));
706 event.rx_action.da = mgmt->da;
707 event.rx_action.sa = mgmt->sa;
708 event.rx_action.bssid = mgmt->bssid;
709 event.rx_action.category = mgmt->u.action.category;
710 event.rx_action.data = &mgmt->u.action.category + 1;
711 event.rx_action.len = frame + len - event.rx_action.data;
713 event.rx_action.freq = nla_get_u32(freq);
714 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
718 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
719 struct nlattr *cookie, const u8 *frame,
720 size_t len, struct nlattr *ack)
722 union wpa_event_data event;
723 const struct ieee80211_hdr *hdr;
730 cookie_val = nla_get_u64(cookie);
731 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
733 (long long unsigned int) cookie_val,
734 cookie_val == drv->send_action_cookie ?
735 " (match)" : " (unknown)", ack != NULL);
736 if (cookie_val != drv->send_action_cookie)
739 hdr = (const struct ieee80211_hdr *) frame;
740 fc = le_to_host16(hdr->frame_control);
742 os_memset(&event, 0, sizeof(event));
743 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
744 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
745 event.tx_status.dst = hdr->addr1;
746 event.tx_status.data = frame;
747 event.tx_status.data_len = len;
748 event.tx_status.ack = ack != NULL;
749 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
753 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
754 enum wpa_event_type type,
755 const u8 *frame, size_t len)
757 const struct ieee80211_mgmt *mgmt;
758 union wpa_event_data event;
759 const u8 *bssid = NULL;
762 mgmt = (const struct ieee80211_mgmt *) frame;
766 if (drv->associated != 0 &&
767 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
768 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
770 * We have presumably received this deauth as a
771 * response to a clear_state_mismatch() outgoing
772 * deauth. Don't let it take us offline!
774 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
775 "from Unknown BSSID " MACSTR " -- ignoring",
782 os_memset(&event, 0, sizeof(event));
784 /* Note: Same offset for Reason Code in both frame subtypes */
785 if (len >= 24 + sizeof(mgmt->u.deauth))
786 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
788 if (type == EVENT_DISASSOC) {
789 event.disassoc_info.addr = bssid;
790 event.disassoc_info.reason_code = reason_code;
791 if (frame + len > mgmt->u.disassoc.variable) {
792 event.disassoc_info.ie = mgmt->u.disassoc.variable;
793 event.disassoc_info.ie_len = frame + len -
794 mgmt->u.disassoc.variable;
797 event.deauth_info.addr = bssid;
798 event.deauth_info.reason_code = reason_code;
799 if (frame + len > mgmt->u.deauth.variable) {
800 event.deauth_info.ie = mgmt->u.deauth.variable;
801 event.deauth_info.ie_len = frame + len -
802 mgmt->u.deauth.variable;
806 wpa_supplicant_event(drv->ctx, type, &event);
810 static void mlme_event(struct wpa_driver_nl80211_data *drv,
811 enum nl80211_commands cmd, struct nlattr *frame,
812 struct nlattr *addr, struct nlattr *timed_out,
813 struct nlattr *freq, struct nlattr *ack,
814 struct nlattr *cookie)
816 if (timed_out && addr) {
817 mlme_timeout_event(drv, cmd, addr);
822 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
827 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
828 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
829 nla_data(frame), nla_len(frame));
832 case NL80211_CMD_AUTHENTICATE:
833 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
835 case NL80211_CMD_ASSOCIATE:
836 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
838 case NL80211_CMD_DEAUTHENTICATE:
839 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
840 nla_data(frame), nla_len(frame));
842 case NL80211_CMD_DISASSOCIATE:
843 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
844 nla_data(frame), nla_len(frame));
846 case NL80211_CMD_FRAME:
847 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
849 case NL80211_CMD_FRAME_TX_STATUS:
850 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
851 nla_len(frame), ack);
859 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
862 union wpa_event_data data;
864 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
865 os_memset(&data, 0, sizeof(data));
866 if (tb[NL80211_ATTR_MAC]) {
867 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
868 nla_data(tb[NL80211_ATTR_MAC]),
869 nla_len(tb[NL80211_ATTR_MAC]));
870 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
872 if (tb[NL80211_ATTR_KEY_SEQ]) {
873 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
874 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
875 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
877 if (tb[NL80211_ATTR_KEY_TYPE]) {
878 enum nl80211_key_type key_type =
879 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
880 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
881 if (key_type == NL80211_KEYTYPE_PAIRWISE)
882 data.michael_mic_failure.unicast = 1;
884 data.michael_mic_failure.unicast = 1;
886 if (tb[NL80211_ATTR_KEY_IDX]) {
887 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
888 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
891 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
895 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
898 if (tb[NL80211_ATTR_MAC] == NULL) {
899 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
903 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
905 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
906 MAC2STR(drv->bssid));
908 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
912 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
913 int cancel_event, struct nlattr *tb[])
915 unsigned int freq, chan_type, duration;
916 union wpa_event_data data;
919 if (tb[NL80211_ATTR_WIPHY_FREQ])
920 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
924 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
925 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
929 if (tb[NL80211_ATTR_DURATION])
930 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
934 if (tb[NL80211_ATTR_COOKIE])
935 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
939 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
940 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
941 cancel_event, freq, chan_type, duration,
942 (long long unsigned int) cookie,
943 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
945 if (cookie != drv->remain_on_chan_cookie)
946 return; /* not for us */
948 drv->pending_remain_on_chan = !cancel_event;
950 os_memset(&data, 0, sizeof(data));
951 data.remain_on_channel.freq = freq;
952 data.remain_on_channel.duration = duration;
953 wpa_supplicant_event(drv->ctx, cancel_event ?
954 EVENT_CANCEL_REMAIN_ON_CHANNEL :
955 EVENT_REMAIN_ON_CHANNEL, &data);
959 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
962 union wpa_event_data event;
965 struct scan_info *info;
966 #define MAX_REPORT_FREQS 50
967 int freqs[MAX_REPORT_FREQS];
970 os_memset(&event, 0, sizeof(event));
971 info = &event.scan_info;
972 info->aborted = aborted;
974 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
975 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
976 struct wpa_driver_scan_ssid *s =
977 &info->ssids[info->num_ssids];
978 s->ssid = nla_data(nl);
979 s->ssid_len = nla_len(nl);
981 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
985 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
986 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
988 freqs[num_freqs] = nla_get_u32(nl);
990 if (num_freqs == MAX_REPORT_FREQS - 1)
994 info->num_freqs = num_freqs;
996 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1000 static int get_link_signal(struct nl_msg *msg, void *arg)
1002 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1003 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1004 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1005 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1006 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1010 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1011 genlmsg_attrlen(gnlh, 0), NULL);
1012 if (!tb[NL80211_ATTR_STA_INFO] ||
1013 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1014 tb[NL80211_ATTR_STA_INFO], policy))
1016 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1019 *sig = (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1024 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1031 msg = nlmsg_alloc();
1035 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1036 0, NL80211_CMD_GET_STATION, 0);
1038 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1039 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1041 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1047 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1048 struct nlattr *tb[])
1050 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1051 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1052 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1053 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1055 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1056 enum nl80211_cqm_rssi_threshold_event event;
1057 union wpa_event_data ed;
1060 if (tb[NL80211_ATTR_CQM] == NULL ||
1061 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1063 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1067 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1069 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1071 os_memset(&ed, 0, sizeof(ed));
1073 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1074 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1075 "event: RSSI high");
1076 ed.signal_change.above_threshold = 1;
1077 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1078 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1080 ed.signal_change.above_threshold = 0;
1084 res = nl80211_get_link_signal(drv, &sig);
1086 ed.signal_change.current_signal = sig;
1087 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm", sig);
1090 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1094 static int process_event(struct nl_msg *msg, void *arg)
1096 struct wpa_driver_nl80211_data *drv = arg;
1097 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1098 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1099 union wpa_event_data data;
1101 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1102 genlmsg_attrlen(gnlh, 0), NULL);
1104 if (tb[NL80211_ATTR_IFINDEX]) {
1105 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1106 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1107 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1108 " for foreign interface (ifindex %d)",
1109 gnlh->cmd, ifindex);
1114 if (drv->ap_scan_as_station &&
1115 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1116 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1117 wpa_driver_nl80211_set_mode(&drv->first_bss,
1119 drv->ap_scan_as_station = 0;
1122 switch (gnlh->cmd) {
1123 case NL80211_CMD_TRIGGER_SCAN:
1124 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1126 case NL80211_CMD_NEW_SCAN_RESULTS:
1127 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1128 drv->scan_complete_events = 1;
1129 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1131 send_scan_event(drv, 0, tb);
1133 case NL80211_CMD_SCAN_ABORTED:
1134 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1136 * Need to indicate that scan results are available in order
1137 * not to make wpa_supplicant stop its scanning.
1139 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1141 send_scan_event(drv, 1, tb);
1143 case NL80211_CMD_AUTHENTICATE:
1144 case NL80211_CMD_ASSOCIATE:
1145 case NL80211_CMD_DEAUTHENTICATE:
1146 case NL80211_CMD_DISASSOCIATE:
1147 case NL80211_CMD_FRAME:
1148 case NL80211_CMD_FRAME_TX_STATUS:
1149 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1150 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1151 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1152 tb[NL80211_ATTR_COOKIE]);
1154 case NL80211_CMD_CONNECT:
1155 case NL80211_CMD_ROAM:
1156 mlme_event_connect(drv, gnlh->cmd,
1157 tb[NL80211_ATTR_STATUS_CODE],
1158 tb[NL80211_ATTR_MAC],
1159 tb[NL80211_ATTR_REQ_IE],
1160 tb[NL80211_ATTR_RESP_IE]);
1162 case NL80211_CMD_DISCONNECT:
1163 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1165 * Avoid reporting two disassociation events that could
1166 * confuse the core code.
1168 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1169 "event when using userspace SME");
1172 drv->associated = 0;
1173 os_memset(&data, 0, sizeof(data));
1174 if (tb[NL80211_ATTR_REASON_CODE])
1175 data.disassoc_info.reason_code =
1176 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1177 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1179 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1180 mlme_event_michael_mic_failure(drv, tb);
1182 case NL80211_CMD_JOIN_IBSS:
1183 mlme_event_join_ibss(drv, tb);
1185 case NL80211_CMD_REMAIN_ON_CHANNEL:
1186 mlme_event_remain_on_channel(drv, 0, tb);
1188 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1189 mlme_event_remain_on_channel(drv, 1, tb);
1191 case NL80211_CMD_NOTIFY_CQM:
1192 nl80211_cqm_event(drv, tb);
1195 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1196 "(cmd=%d)", gnlh->cmd);
1204 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1208 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1210 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1212 cb = nl_cb_clone(drv->nl_cb);
1215 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1216 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1217 nl_recvmsgs(drv->nl_handle_event, cb);
1223 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1224 * @priv: driver_nl80211 private data
1225 * @alpha2_arg: country to which to switch to
1226 * Returns: 0 on success, -1 on failure
1228 * This asks nl80211 to set the regulatory domain for given
1229 * country ISO / IEC alpha2.
1231 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1233 struct i802_bss *bss = priv;
1234 struct wpa_driver_nl80211_data *drv = bss->drv;
1238 msg = nlmsg_alloc();
1242 alpha2[0] = alpha2_arg[0];
1243 alpha2[1] = alpha2_arg[1];
1246 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1247 0, NL80211_CMD_REQ_SET_REG, 0);
1249 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1250 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1259 struct wiphy_info_data {
1263 int connect_supported;
1267 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1269 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1270 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1271 struct wiphy_info_data *info = arg;
1273 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1274 genlmsg_attrlen(gnlh, 0), NULL);
1276 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1277 info->max_scan_ssids =
1278 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1280 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1281 struct nlattr *nl_mode;
1283 nla_for_each_nested(nl_mode,
1284 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1285 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1286 info->ap_supported = 1;
1292 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1293 struct nlattr *nl_cmd;
1296 nla_for_each_nested(nl_cmd,
1297 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1298 u32 cmd = nla_get_u32(nl_cmd);
1299 if (cmd == NL80211_CMD_AUTHENTICATE)
1300 info->auth_supported = 1;
1301 else if (cmd == NL80211_CMD_CONNECT)
1302 info->connect_supported = 1;
1310 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1311 struct wiphy_info_data *info)
1315 os_memset(info, 0, sizeof(*info));
1316 msg = nlmsg_alloc();
1320 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1321 0, NL80211_CMD_GET_WIPHY, 0);
1323 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1325 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1334 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1336 struct wiphy_info_data info;
1337 if (wpa_driver_nl80211_get_info(drv, &info))
1339 drv->has_capability = 1;
1340 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1341 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1342 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1343 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1344 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1345 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1346 WPA_DRIVER_CAPA_ENC_WEP104 |
1347 WPA_DRIVER_CAPA_ENC_TKIP |
1348 WPA_DRIVER_CAPA_ENC_CCMP;
1349 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1350 WPA_DRIVER_AUTH_SHARED |
1351 WPA_DRIVER_AUTH_LEAP;
1353 drv->capa.max_scan_ssids = info.max_scan_ssids;
1354 if (info.ap_supported)
1355 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1357 if (info.auth_supported)
1358 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1359 else if (!info.connect_supported) {
1360 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1361 "authentication/association or connect commands");
1365 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1366 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1367 drv->capa.max_remain_on_chan = 5000;
1371 #endif /* HOSTAPD */
1374 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1378 /* Initialize generic netlink and nl80211 */
1380 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1381 if (drv->nl_cb == NULL) {
1382 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1387 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1388 if (drv->nl_handle == NULL) {
1389 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1394 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1395 if (drv->nl_handle_event == NULL) {
1396 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1397 "callbacks (event)");
1401 if (genl_connect(drv->nl_handle)) {
1402 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1407 if (genl_connect(drv->nl_handle_event)) {
1408 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1413 #ifdef CONFIG_LIBNL20
1414 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1415 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1419 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1421 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1422 "netlink cache (event)");
1425 #else /* CONFIG_LIBNL20 */
1426 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1427 if (drv->nl_cache == NULL) {
1428 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1432 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1433 if (drv->nl_cache_event == NULL) {
1434 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1435 "netlink cache (event)");
1438 #endif /* CONFIG_LIBNL20 */
1440 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1441 if (drv->nl80211 == NULL) {
1442 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1447 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1449 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1451 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1452 "membership for scan events: %d (%s)",
1453 ret, strerror(-ret));
1457 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1459 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1461 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1462 "membership for mlme events: %d (%s)",
1463 ret, strerror(-ret));
1467 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1468 wpa_driver_nl80211_event_receive, drv, NULL);
1473 nl_cache_free(drv->nl_cache_event);
1475 nl_cache_free(drv->nl_cache);
1477 nl80211_handle_destroy(drv->nl_handle_event);
1479 nl80211_handle_destroy(drv->nl_handle);
1481 nl_cb_put(drv->nl_cb);
1487 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1489 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1491 * This may be for any interface; use ifdown event to disable
1497 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1499 struct wpa_driver_nl80211_data *drv = ctx;
1500 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1501 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1502 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1503 "after rfkill unblock");
1506 /* rtnetlink ifup handler will report interface as enabled */
1511 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1512 * @ctx: context to be used when calling wpa_supplicant functions,
1513 * e.g., wpa_supplicant_event()
1514 * @ifname: interface name, e.g., wlan0
1515 * Returns: Pointer to private data, %NULL on failure
1517 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1519 struct wpa_driver_nl80211_data *drv;
1520 struct netlink_config *cfg;
1521 struct rfkill_config *rcfg;
1522 struct i802_bss *bss;
1524 drv = os_zalloc(sizeof(*drv));
1528 bss = &drv->first_bss;
1530 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1531 drv->monitor_ifidx = -1;
1532 drv->monitor_sock = -1;
1533 drv->ioctl_sock = -1;
1535 if (wpa_driver_nl80211_init_nl(drv)) {
1540 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1541 if (drv->ioctl_sock < 0) {
1542 perror("socket(PF_INET,SOCK_DGRAM)");
1546 cfg = os_zalloc(sizeof(*cfg));
1550 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1551 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1552 drv->netlink = netlink_init(cfg);
1553 if (drv->netlink == NULL) {
1558 rcfg = os_zalloc(sizeof(*rcfg));
1562 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1563 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1564 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1565 drv->rfkill = rfkill_init(rcfg);
1566 if (drv->rfkill == NULL) {
1567 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1571 if (wpa_driver_nl80211_finish_drv_init(drv))
1577 rfkill_deinit(drv->rfkill);
1578 netlink_deinit(drv->netlink);
1579 if (drv->ioctl_sock >= 0)
1580 close(drv->ioctl_sock);
1582 genl_family_put(drv->nl80211);
1583 nl_cache_free(drv->nl_cache);
1584 nl80211_handle_destroy(drv->nl_handle);
1585 nl_cb_put(drv->nl_cb);
1586 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1593 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1594 u16 type, const u8 *match, size_t match_len)
1599 msg = nlmsg_alloc();
1603 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1604 NL80211_CMD_REGISTER_ACTION, 0);
1606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1607 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1608 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1610 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1613 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1614 "failed: ret=%d (%s)", ret, strerror(-ret));
1615 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1617 goto nla_put_failure;
1626 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1627 const u8 *match, size_t match_len)
1629 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1630 return nl80211_register_frame(drv, type, match, match_len);
1634 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1637 /* GAS Initial Request */
1638 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1640 /* GAS Initial Response */
1641 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1643 /* GAS Comeback Request */
1644 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1646 /* GAS Comeback Response */
1647 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1649 /* P2P Public Action */
1650 if (nl80211_register_action_frame(drv,
1651 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1655 if (nl80211_register_action_frame(drv,
1656 (u8 *) "\x7f\x50\x6f\x9a\x09",
1659 #endif /* CONFIG_P2P */
1661 /* FT Action frames */
1662 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1665 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1666 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1672 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1674 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1679 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1681 struct i802_bss *bss = &drv->first_bss;
1682 int send_rfkill_event = 0;
1684 drv->ifindex = if_nametoindex(bss->ifname);
1685 drv->first_bss.ifindex = drv->ifindex;
1688 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1689 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1690 "use managed mode");
1693 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1694 if (rfkill_is_blocked(drv->rfkill)) {
1695 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1696 "interface '%s' due to rfkill",
1698 drv->if_disabled = 1;
1699 send_rfkill_event = 1;
1701 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1702 "interface '%s' UP", bss->ifname);
1707 if (wpa_driver_nl80211_capa(drv))
1710 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1711 1, IF_OPER_DORMANT);
1712 #endif /* HOSTAPD */
1714 if (nl80211_register_action_frames(drv) < 0) {
1715 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1716 "frame processing - ignore for now");
1718 * Older kernel versions did not support this, so ignore the
1719 * error for now. Some functionality may not be available
1724 if (send_rfkill_event) {
1725 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1733 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1737 msg = nlmsg_alloc();
1741 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1742 0, NL80211_CMD_DEL_BEACON, 0);
1743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1745 return send_and_recv_msgs(drv, msg, NULL, NULL);
1752 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1753 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1755 * Shut down driver interface and processing of driver events. Free
1756 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1758 static void wpa_driver_nl80211_deinit(void *priv)
1760 struct i802_bss *bss = priv;
1761 struct wpa_driver_nl80211_data *drv = bss->drv;
1763 if (drv->added_if_into_bridge) {
1764 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1766 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1767 "interface %s from bridge %s: %s",
1768 bss->ifname, drv->brname, strerror(errno));
1770 if (drv->added_bridge) {
1771 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1772 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1774 drv->brname, strerror(errno));
1777 nl80211_remove_monitor_interface(drv);
1779 if (drv->nlmode == NL80211_IFTYPE_AP)
1780 wpa_driver_nl80211_del_beacon(drv);
1783 if (drv->last_freq_ht) {
1784 /* Clear HT flags from the driver */
1785 struct hostapd_freq_params freq;
1786 os_memset(&freq, 0, sizeof(freq));
1787 freq.freq = drv->last_freq;
1788 i802_set_freq(priv, &freq);
1791 if (drv->eapol_sock >= 0) {
1792 eloop_unregister_read_sock(drv->eapol_sock);
1793 close(drv->eapol_sock);
1796 if (drv->if_indices != drv->default_if_indices)
1797 os_free(drv->if_indices);
1798 #endif /* HOSTAPD */
1800 if (drv->disable_11b_rates)
1801 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1803 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1804 netlink_deinit(drv->netlink);
1805 rfkill_deinit(drv->rfkill);
1807 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1809 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1810 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1812 if (drv->ioctl_sock >= 0)
1813 close(drv->ioctl_sock);
1815 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1816 genl_family_put(drv->nl80211);
1817 nl_cache_free(drv->nl_cache);
1818 nl_cache_free(drv->nl_cache_event);
1819 nl80211_handle_destroy(drv->nl_handle);
1820 nl80211_handle_destroy(drv->nl_handle_event);
1821 nl_cb_put(drv->nl_cb);
1823 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1826 os_free(drv->filter_ssids);
1833 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1834 * @eloop_ctx: Driver private data
1835 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1837 * This function can be used as registered timeout when starting a scan to
1838 * generate a scan completed event if the driver does not report this.
1840 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1842 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1843 if (drv->ap_scan_as_station) {
1844 wpa_driver_nl80211_set_mode(&drv->first_bss,
1846 drv->ap_scan_as_station = 0;
1848 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1849 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1854 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1855 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1856 * @params: Scan parameters
1857 * Returns: 0 on success, -1 on failure
1859 static int wpa_driver_nl80211_scan(void *priv,
1860 struct wpa_driver_scan_params *params)
1862 struct i802_bss *bss = priv;
1863 struct wpa_driver_nl80211_data *drv = bss->drv;
1864 int ret = 0, timeout;
1865 struct nl_msg *msg, *ssids, *freqs;
1868 msg = nlmsg_alloc();
1869 ssids = nlmsg_alloc();
1870 freqs = nlmsg_alloc();
1871 if (!msg || !ssids || !freqs) {
1878 os_free(drv->filter_ssids);
1879 drv->filter_ssids = params->filter_ssids;
1880 params->filter_ssids = NULL;
1881 drv->num_filter_ssids = params->num_filter_ssids;
1883 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1884 NL80211_CMD_TRIGGER_SCAN, 0);
1886 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1888 for (i = 0; i < params->num_ssids; i++) {
1889 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1890 params->ssids[i].ssid,
1891 params->ssids[i].ssid_len);
1892 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1893 params->ssids[i].ssid);
1895 if (params->num_ssids)
1896 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1898 if (params->extra_ies) {
1899 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1900 params->extra_ies, params->extra_ies_len);
1901 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1905 if (params->freqs) {
1906 for (i = 0; params->freqs[i]; i++) {
1907 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1908 "MHz", params->freqs[i]);
1909 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1911 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1914 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1917 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1918 "(%s)", ret, strerror(-ret));
1920 if (drv->nlmode == NL80211_IFTYPE_AP) {
1922 * mac80211 does not allow scan requests in AP mode, so
1923 * try to do this in station mode.
1925 if (wpa_driver_nl80211_set_mode(bss,
1926 IEEE80211_MODE_INFRA))
1927 goto nla_put_failure;
1929 if (wpa_driver_nl80211_scan(drv, params)) {
1930 wpa_driver_nl80211_set_mode(bss,
1932 goto nla_put_failure;
1935 /* Restore AP mode when processing scan results */
1936 drv->ap_scan_as_station = 1;
1939 goto nla_put_failure;
1941 goto nla_put_failure;
1942 #endif /* HOSTAPD */
1945 /* Not all drivers generate "scan completed" wireless event, so try to
1946 * read results after a timeout. */
1948 if (drv->scan_complete_events) {
1950 * The driver seems to deliver events to notify when scan is
1951 * complete, so use longer timeout to avoid race conditions
1952 * with scanning and following association request.
1956 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1957 "seconds", ret, timeout);
1958 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1959 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1970 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1972 const u8 *end, *pos;
1978 end = ies + ies_len;
1980 while (pos + 1 < end) {
1981 if (pos + 2 + pos[1] > end)
1992 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1993 const u8 *ie, size_t ie_len)
1998 if (drv->filter_ssids == NULL)
2001 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2005 for (i = 0; i < drv->num_filter_ssids; i++) {
2006 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2007 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2016 struct nl80211_bss_info_arg {
2017 struct wpa_driver_nl80211_data *drv;
2018 struct wpa_scan_results *res;
2021 static int bss_info_handler(struct nl_msg *msg, void *arg)
2023 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2024 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2025 struct nlattr *bss[NL80211_BSS_MAX + 1];
2026 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2027 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2028 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2029 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2030 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2031 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2032 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2033 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2034 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2035 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2036 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2037 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2039 struct nl80211_bss_info_arg *_arg = arg;
2040 struct wpa_scan_results *res = _arg->res;
2041 struct wpa_scan_res **tmp;
2042 struct wpa_scan_res *r;
2043 const u8 *ie, *beacon_ie;
2044 size_t ie_len, beacon_ie_len;
2047 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2048 genlmsg_attrlen(gnlh, 0), NULL);
2049 if (!tb[NL80211_ATTR_BSS])
2051 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2054 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2055 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2056 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2061 if (bss[NL80211_BSS_BEACON_IES]) {
2062 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2063 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2069 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2070 ie ? ie_len : beacon_ie_len))
2073 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2076 if (bss[NL80211_BSS_BSSID])
2077 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2079 if (bss[NL80211_BSS_FREQUENCY])
2080 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2081 if (bss[NL80211_BSS_BEACON_INTERVAL])
2082 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2083 if (bss[NL80211_BSS_CAPABILITY])
2084 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2085 r->flags |= WPA_SCAN_NOISE_INVALID;
2086 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2087 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2088 r->level /= 100; /* mBm to dBm */
2089 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2090 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2091 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2092 r->flags |= WPA_SCAN_LEVEL_INVALID;
2094 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2095 if (bss[NL80211_BSS_TSF])
2096 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2097 if (bss[NL80211_BSS_SEEN_MS_AGO])
2098 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2100 pos = (u8 *) (r + 1);
2102 os_memcpy(pos, ie, ie_len);
2105 r->beacon_ie_len = beacon_ie_len;
2107 os_memcpy(pos, beacon_ie, beacon_ie_len);
2109 if (bss[NL80211_BSS_STATUS]) {
2110 enum nl80211_bss_status status;
2111 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2113 case NL80211_BSS_STATUS_AUTHENTICATED:
2114 r->flags |= WPA_SCAN_AUTHENTICATED;
2116 case NL80211_BSS_STATUS_ASSOCIATED:
2117 r->flags |= WPA_SCAN_ASSOCIATED;
2124 tmp = os_realloc(res->res,
2125 (res->num + 1) * sizeof(struct wpa_scan_res *));
2130 tmp[res->num++] = r;
2137 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2140 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2141 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2142 "mismatch (" MACSTR ")", MAC2STR(addr));
2143 wpa_driver_nl80211_mlme(drv, addr,
2144 NL80211_CMD_DEAUTHENTICATE,
2145 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2150 static void wpa_driver_nl80211_check_bss_status(
2151 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2155 for (i = 0; i < res->num; i++) {
2156 struct wpa_scan_res *r = res->res[i];
2157 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2158 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2159 "indicates BSS status with " MACSTR
2160 " as authenticated",
2162 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2163 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2164 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2166 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2167 " in local state (auth=" MACSTR
2168 " assoc=" MACSTR ")",
2169 MAC2STR(drv->auth_bssid),
2170 MAC2STR(drv->bssid));
2171 clear_state_mismatch(drv, r->bssid);
2175 if (r->flags & WPA_SCAN_ASSOCIATED) {
2176 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2177 "indicate BSS status with " MACSTR
2180 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2182 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2183 "(not associated) does not match "
2185 clear_state_mismatch(drv, r->bssid);
2186 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2187 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2189 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2190 "(associated with " MACSTR ") does "
2191 "not match with BSS state",
2192 MAC2STR(drv->bssid));
2193 clear_state_mismatch(drv, r->bssid);
2194 clear_state_mismatch(drv, drv->bssid);
2201 static void wpa_scan_results_free(struct wpa_scan_results *res)
2208 for (i = 0; i < res->num; i++)
2209 os_free(res->res[i]);
2215 static struct wpa_scan_results *
2216 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2219 struct wpa_scan_results *res;
2221 struct nl80211_bss_info_arg arg;
2223 res = os_zalloc(sizeof(*res));
2226 msg = nlmsg_alloc();
2228 goto nla_put_failure;
2230 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2231 NL80211_CMD_GET_SCAN, 0);
2232 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2236 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2239 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2240 (unsigned long) res->num);
2243 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2244 "(%s)", ret, strerror(-ret));
2247 wpa_scan_results_free(res);
2253 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2254 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2255 * Returns: Scan results on success, -1 on failure
2257 static struct wpa_scan_results *
2258 wpa_driver_nl80211_get_scan_results(void *priv)
2260 struct i802_bss *bss = priv;
2261 struct wpa_driver_nl80211_data *drv = bss->drv;
2262 struct wpa_scan_results *res;
2264 res = nl80211_get_scan_results(drv);
2266 wpa_driver_nl80211_check_bss_status(drv, res);
2271 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2273 struct wpa_scan_results *res;
2276 res = nl80211_get_scan_results(drv);
2278 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2282 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2283 for (i = 0; i < res->num; i++) {
2284 struct wpa_scan_res *r = res->res[i];
2285 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2286 (int) i, (int) res->num, MAC2STR(r->bssid),
2287 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2288 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2291 wpa_scan_results_free(res);
2295 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2296 enum wpa_alg alg, const u8 *addr,
2297 int key_idx, int set_tx,
2298 const u8 *seq, size_t seq_len,
2299 const u8 *key, size_t key_len)
2301 struct i802_bss *bss = priv;
2302 struct wpa_driver_nl80211_data *drv = bss->drv;
2303 int ifindex = if_nametoindex(ifname);
2307 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2308 "set_tx=%d seq_len=%lu key_len=%lu",
2309 __func__, ifindex, alg, addr, key_idx, set_tx,
2310 (unsigned long) seq_len, (unsigned long) key_len);
2312 msg = nlmsg_alloc();
2316 if (alg == WPA_ALG_NONE) {
2317 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2318 0, NL80211_CMD_DEL_KEY, 0);
2320 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2321 0, NL80211_CMD_NEW_KEY, 0);
2322 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2326 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2327 WLAN_CIPHER_SUITE_WEP40);
2329 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2330 WLAN_CIPHER_SUITE_WEP104);
2333 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2334 WLAN_CIPHER_SUITE_TKIP);
2337 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2338 WLAN_CIPHER_SUITE_CCMP);
2341 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2342 WLAN_CIPHER_SUITE_AES_CMAC);
2345 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2346 "algorithm %d", __func__, alg);
2353 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2355 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2357 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2358 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2360 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2361 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2363 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2364 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2367 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2368 ret, strerror(-ret));
2371 * If we failed or don't need to set the default TX key (below),
2374 if (ret || !set_tx || alg == WPA_ALG_NONE)
2380 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2382 #endif /* HOSTAPD */
2384 msg = nlmsg_alloc();
2388 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2389 0, NL80211_CMD_SET_KEY, 0);
2390 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2391 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2392 if (alg == WPA_ALG_IGTK)
2393 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2395 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2397 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2401 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2402 "err=%d %s)", ret, strerror(-ret));
2410 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2411 int key_idx, int defkey,
2412 const u8 *seq, size_t seq_len,
2413 const u8 *key, size_t key_len)
2415 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2419 if (defkey && alg == WPA_ALG_IGTK)
2420 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2422 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2424 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2429 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2430 WLAN_CIPHER_SUITE_WEP40);
2432 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2433 WLAN_CIPHER_SUITE_WEP104);
2436 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2439 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2442 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2443 WLAN_CIPHER_SUITE_AES_CMAC);
2446 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2447 "algorithm %d", __func__, alg);
2452 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2454 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2456 nla_nest_end(msg, key_attr);
2464 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2468 struct nlattr *nl_keys, *nl_key;
2470 for (i = 0; i < 4; i++) {
2471 if (!params->wep_key[i])
2479 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2481 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2483 goto nla_put_failure;
2485 for (i = 0; i < 4; i++) {
2486 if (!params->wep_key[i])
2489 nl_key = nla_nest_start(msg, i);
2491 goto nla_put_failure;
2493 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2494 params->wep_key[i]);
2495 if (params->wep_key_len[i] == 5)
2496 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2497 WLAN_CIPHER_SUITE_WEP40);
2499 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2500 WLAN_CIPHER_SUITE_WEP104);
2502 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2504 if (i == params->wep_tx_keyidx)
2505 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2507 nla_nest_end(msg, nl_key);
2509 nla_nest_end(msg, nl_keys);
2518 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2519 const u8 *addr, int cmd, u16 reason_code,
2520 int local_state_change)
2525 msg = nlmsg_alloc();
2529 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2531 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2532 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2533 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2534 if (local_state_change)
2535 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2537 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2540 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2541 "(%s)", ret, strerror(-ret));
2542 goto nla_put_failure;
2552 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2553 const u8 *addr, int reason_code)
2555 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2556 __func__, MAC2STR(addr), reason_code);
2557 drv->associated = 0;
2558 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2563 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2566 struct i802_bss *bss = priv;
2567 struct wpa_driver_nl80211_data *drv = bss->drv;
2568 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2569 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2570 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2571 __func__, MAC2STR(addr), reason_code);
2572 drv->associated = 0;
2573 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2578 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2581 struct i802_bss *bss = priv;
2582 struct wpa_driver_nl80211_data *drv = bss->drv;
2583 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2584 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2585 wpa_printf(MSG_DEBUG, "%s", __func__);
2586 drv->associated = 0;
2587 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2592 static int wpa_driver_nl80211_authenticate(
2593 void *priv, struct wpa_driver_auth_params *params)
2595 struct i802_bss *bss = priv;
2596 struct wpa_driver_nl80211_data *drv = bss->drv;
2599 enum nl80211_auth_type type;
2602 drv->associated = 0;
2603 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2604 /* FIX: IBSS mode */
2605 if (drv->nlmode != NL80211_IFTYPE_STATION)
2606 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2608 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2612 msg = nlmsg_alloc();
2616 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2619 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2620 NL80211_CMD_AUTHENTICATE, 0);
2622 for (i = 0; i < 4; i++) {
2623 if (!params->wep_key[i])
2625 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2627 i == params->wep_tx_keyidx, NULL, 0,
2629 params->wep_key_len[i]);
2630 if (params->wep_tx_keyidx != i)
2632 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2633 params->wep_key[i], params->wep_key_len[i])) {
2639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2640 if (params->bssid) {
2641 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2642 MAC2STR(params->bssid));
2643 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2646 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2647 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2650 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2651 params->ssid, params->ssid_len);
2652 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2655 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2657 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2658 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2659 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2660 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2661 type = NL80211_AUTHTYPE_SHARED_KEY;
2662 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2663 type = NL80211_AUTHTYPE_NETWORK_EAP;
2664 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2665 type = NL80211_AUTHTYPE_FT;
2667 goto nla_put_failure;
2668 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2669 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2670 if (params->local_state_change) {
2671 wpa_printf(MSG_DEBUG, " * Local state change only");
2672 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2675 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2678 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2679 "(%s)", ret, strerror(-ret));
2681 if (ret == -EALREADY && count == 1 && params->bssid &&
2682 !params->local_state_change) {
2684 * mac80211 does not currently accept new
2685 * authentication if we are already authenticated. As a
2686 * workaround, force deauthentication and try again.
2688 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2689 "after forced deauthentication");
2690 wpa_driver_nl80211_deauthenticate(
2692 WLAN_REASON_PREV_AUTH_NOT_VALID);
2696 goto nla_put_failure;
2699 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2708 struct phy_info_arg {
2710 struct hostapd_hw_modes *modes;
2713 static int phy_info_handler(struct nl_msg *msg, void *arg)
2715 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2716 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2717 struct phy_info_arg *phy_info = arg;
2719 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2721 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2722 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2723 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2724 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2725 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2726 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2727 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2728 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2731 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2732 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2733 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2734 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2737 struct nlattr *nl_band;
2738 struct nlattr *nl_freq;
2739 struct nlattr *nl_rate;
2740 int rem_band, rem_freq, rem_rate;
2741 struct hostapd_hw_modes *mode;
2742 int idx, mode_is_set;
2744 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2745 genlmsg_attrlen(gnlh, 0), NULL);
2747 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2750 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2751 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2754 phy_info->modes = mode;
2758 mode = &phy_info->modes[*(phy_info->num_modes)];
2759 memset(mode, 0, sizeof(*mode));
2760 *(phy_info->num_modes) += 1;
2762 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2763 nla_len(nl_band), NULL);
2765 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2766 mode->ht_capab = nla_get_u16(
2767 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2770 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2771 mode->a_mpdu_params |= nla_get_u8(
2772 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2776 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2777 mode->a_mpdu_params |= nla_get_u8(
2778 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2782 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2783 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2785 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2786 os_memcpy(mode->mcs_set, mcs, 16);
2789 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2790 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2791 nla_len(nl_freq), freq_policy);
2792 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2794 mode->num_channels++;
2797 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2798 if (!mode->channels)
2803 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2804 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2805 nla_len(nl_freq), freq_policy);
2806 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2809 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2810 mode->channels[idx].flag = 0;
2813 /* crude heuristic */
2814 if (mode->channels[idx].freq < 4000)
2815 mode->mode = HOSTAPD_MODE_IEEE80211B;
2817 mode->mode = HOSTAPD_MODE_IEEE80211A;
2821 /* crude heuristic */
2822 if (mode->channels[idx].freq < 4000)
2823 if (mode->channels[idx].freq == 2484)
2824 mode->channels[idx].chan = 14;
2826 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2828 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2830 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2831 mode->channels[idx].flag |=
2832 HOSTAPD_CHAN_DISABLED;
2833 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2834 mode->channels[idx].flag |=
2835 HOSTAPD_CHAN_PASSIVE_SCAN;
2836 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2837 mode->channels[idx].flag |=
2838 HOSTAPD_CHAN_NO_IBSS;
2839 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2840 mode->channels[idx].flag |=
2843 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2844 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2845 mode->channels[idx].max_tx_power =
2846 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2851 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2852 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2853 nla_len(nl_rate), rate_policy);
2854 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2859 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2865 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2866 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2867 nla_len(nl_rate), rate_policy);
2868 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2870 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2872 /* crude heuristic */
2873 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2874 mode->rates[idx] > 200)
2875 mode->mode = HOSTAPD_MODE_IEEE80211G;
2884 static struct hostapd_hw_modes *
2885 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2888 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2889 int i, mode11g_idx = -1;
2891 /* If only 802.11g mode is included, use it to construct matching
2892 * 802.11b mode data. */
2894 for (m = 0; m < *num_modes; m++) {
2895 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2896 return modes; /* 802.11b already included */
2897 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2901 if (mode11g_idx < 0)
2902 return modes; /* 2.4 GHz band not supported at all */
2904 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2906 return modes; /* Could not add 802.11b mode */
2908 mode = &nmodes[*num_modes];
2909 os_memset(mode, 0, sizeof(*mode));
2913 mode->mode = HOSTAPD_MODE_IEEE80211B;
2915 mode11g = &modes[mode11g_idx];
2916 mode->num_channels = mode11g->num_channels;
2917 mode->channels = os_malloc(mode11g->num_channels *
2918 sizeof(struct hostapd_channel_data));
2919 if (mode->channels == NULL) {
2921 return modes; /* Could not add 802.11b mode */
2923 os_memcpy(mode->channels, mode11g->channels,
2924 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2926 mode->num_rates = 0;
2927 mode->rates = os_malloc(4 * sizeof(int));
2928 if (mode->rates == NULL) {
2929 os_free(mode->channels);
2931 return modes; /* Could not add 802.11b mode */
2934 for (i = 0; i < mode11g->num_rates; i++) {
2935 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2936 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2938 mode->rates[mode->num_rates] = mode11g->rates[i];
2940 if (mode->num_rates == 4)
2944 if (mode->num_rates == 0) {
2945 os_free(mode->channels);
2946 os_free(mode->rates);
2948 return modes; /* No 802.11b rates */
2951 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2958 static struct hostapd_hw_modes *
2959 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2961 struct i802_bss *bss = priv;
2962 struct wpa_driver_nl80211_data *drv = bss->drv;
2964 struct phy_info_arg result = {
2965 .num_modes = num_modes,
2972 msg = nlmsg_alloc();
2976 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2977 0, NL80211_CMD_GET_WIPHY, 0);
2979 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2981 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2982 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2988 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2989 const void *data, size_t len,
2993 0x00, 0x00, /* radiotap version */
2994 0x0e, 0x00, /* radiotap length */
2995 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2996 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2998 0x00, 0x00, /* RX and TX flags to indicate that */
2999 0x00, 0x00, /* this is the injected frame directly */
3001 struct iovec iov[2] = {
3003 .iov_base = &rtap_hdr,
3004 .iov_len = sizeof(rtap_hdr),
3007 .iov_base = (void *) data,
3011 struct msghdr msg = {
3016 .msg_control = NULL,
3017 .msg_controllen = 0,
3022 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3024 return sendmsg(drv->monitor_sock, &msg, 0);
3028 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3031 struct i802_bss *bss = priv;
3032 struct wpa_driver_nl80211_data *drv = bss->drv;
3033 struct ieee80211_mgmt *mgmt;
3037 mgmt = (struct ieee80211_mgmt *) data;
3038 fc = le_to_host16(mgmt->frame_control);
3040 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3041 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3043 * Only one of the authentication frame types is encrypted.
3044 * In order for static WEP encryption to work properly (i.e.,
3045 * to not encrypt the frame), we need to tell mac80211 about
3046 * the frames that must not be encrypted.
3048 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3049 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3050 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3054 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3058 static int wpa_driver_nl80211_set_beacon(void *priv,
3059 const u8 *head, size_t head_len,
3060 const u8 *tail, size_t tail_len,
3061 int dtim_period, int beacon_int)
3063 struct i802_bss *bss = priv;
3064 struct wpa_driver_nl80211_data *drv = bss->drv;
3066 u8 cmd = NL80211_CMD_NEW_BEACON;
3069 int ifindex = if_nametoindex(bss->ifname);
3071 beacon_set = bss->beacon_set;
3073 msg = nlmsg_alloc();
3077 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3080 cmd = NL80211_CMD_SET_BEACON;
3082 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3084 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3085 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3086 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3087 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3088 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3090 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3092 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3093 ret, strerror(-ret));
3095 bss->beacon_set = 1;
3103 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3104 int freq, int ht_enabled,
3105 int sec_channel_offset)
3110 msg = nlmsg_alloc();
3114 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3115 NL80211_CMD_SET_WIPHY, 0);
3117 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3118 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3120 switch (sec_channel_offset) {
3122 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3123 NL80211_CHAN_HT40MINUS);
3126 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3127 NL80211_CHAN_HT40PLUS);
3130 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3136 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3139 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3140 "%d (%s)", freq, ret, strerror(-ret));
3146 static int wpa_driver_nl80211_sta_add(void *priv,
3147 struct hostapd_sta_add_params *params)
3149 struct i802_bss *bss = priv;
3150 struct wpa_driver_nl80211_data *drv = bss->drv;
3154 msg = nlmsg_alloc();
3158 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3159 0, NL80211_CMD_NEW_STATION, 0);
3161 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3162 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3163 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3164 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3165 params->supp_rates);
3166 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3167 params->listen_interval);
3168 if (params->ht_capabilities) {
3169 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3170 sizeof(*params->ht_capabilities),
3171 params->ht_capabilities);
3174 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3176 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3177 "result: %d (%s)", ret, strerror(-ret));
3185 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3187 struct i802_bss *bss = priv;
3188 struct wpa_driver_nl80211_data *drv = bss->drv;
3192 msg = nlmsg_alloc();
3196 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3197 0, NL80211_CMD_DEL_STATION, 0);
3199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3200 if_nametoindex(bss->ifname));
3201 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3203 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3212 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3217 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3220 /* stop listening for EAPOL on this interface */
3221 del_ifidx(drv, ifidx);
3222 #endif /* HOSTAPD */
3224 msg = nlmsg_alloc();
3226 goto nla_put_failure;
3228 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3229 0, NL80211_CMD_DEL_INTERFACE, 0);
3230 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3232 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3235 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3239 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3241 enum nl80211_iftype iftype,
3242 const u8 *addr, int wds)
3244 struct nl_msg *msg, *flags = NULL;
3248 msg = nlmsg_alloc();
3252 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3253 0, NL80211_CMD_NEW_INTERFACE, 0);
3254 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3255 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3256 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3258 if (iftype == NL80211_IFTYPE_MONITOR) {
3261 flags = nlmsg_alloc();
3263 goto nla_put_failure;
3265 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3267 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3272 goto nla_put_failure;
3274 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3277 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3280 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3281 ifname, ret, strerror(-ret));
3285 ifidx = if_nametoindex(ifname);
3286 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3293 /* start listening for EAPOL on this interface */
3294 add_ifidx(drv, ifidx);
3295 #endif /* HOSTAPD */
3297 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3298 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3299 nl80211_remove_iface(drv, ifidx);
3307 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3308 const char *ifname, enum nl80211_iftype iftype,
3309 const u8 *addr, int wds)
3313 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3315 /* if error occured and interface exists already */
3316 if (ret == -ENFILE && if_nametoindex(ifname)) {
3317 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3319 /* Try to remove the interface that was already there. */
3320 nl80211_remove_iface(drv, if_nametoindex(ifname));
3322 /* Try to create the interface again */
3323 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3327 if (ret >= 0 && drv->disable_11b_rates)
3328 nl80211_disable_11b_rates(drv, ret, 1);
3334 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3336 struct ieee80211_hdr *hdr;
3338 union wpa_event_data event;
3340 hdr = (struct ieee80211_hdr *) buf;
3341 fc = le_to_host16(hdr->frame_control);
3343 os_memset(&event, 0, sizeof(event));
3344 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3345 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3346 event.tx_status.dst = hdr->addr1;
3347 event.tx_status.data = buf;
3348 event.tx_status.data_len = len;
3349 event.tx_status.ack = ok;
3350 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3354 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3355 u8 *buf, size_t len)
3357 union wpa_event_data event;
3358 os_memset(&event, 0, sizeof(event));
3359 event.rx_from_unknown.frame = buf;
3360 event.rx_from_unknown.len = len;
3361 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3365 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3366 u8 *buf, size_t len, int datarate, int ssi_signal)
3368 struct ieee80211_hdr *hdr;
3370 union wpa_event_data event;
3372 hdr = (struct ieee80211_hdr *) buf;
3373 fc = le_to_host16(hdr->frame_control);
3375 switch (WLAN_FC_GET_TYPE(fc)) {
3376 case WLAN_FC_TYPE_MGMT:
3377 os_memset(&event, 0, sizeof(event));
3378 event.rx_mgmt.frame = buf;
3379 event.rx_mgmt.frame_len = len;
3380 event.rx_mgmt.datarate = datarate;
3381 event.rx_mgmt.ssi_signal = ssi_signal;
3382 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3384 case WLAN_FC_TYPE_CTRL:
3385 /* can only get here with PS-Poll frames */
3386 wpa_printf(MSG_DEBUG, "CTRL");
3387 from_unknown_sta(drv, buf, len);
3389 case WLAN_FC_TYPE_DATA:
3390 from_unknown_sta(drv, buf, len);
3396 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3398 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3400 unsigned char buf[3000];
3401 struct ieee80211_radiotap_iterator iter;
3403 int datarate = 0, ssi_signal = 0;
3404 int injected = 0, failed = 0, rxflags = 0;
3406 len = recv(sock, buf, sizeof(buf), 0);
3412 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3413 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3414 "frame since Probe Request reporting is disabled");
3418 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3419 printf("received invalid radiotap frame\n");
3424 ret = ieee80211_radiotap_iterator_next(&iter);
3428 printf("received invalid radiotap frame (%d)\n", ret);
3431 switch (iter.this_arg_index) {
3432 case IEEE80211_RADIOTAP_FLAGS:
3433 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3436 case IEEE80211_RADIOTAP_RX_FLAGS:
3439 case IEEE80211_RADIOTAP_TX_FLAGS:
3441 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3442 IEEE80211_RADIOTAP_F_TX_FAIL;
3444 case IEEE80211_RADIOTAP_DATA_RETRIES:
3446 case IEEE80211_RADIOTAP_CHANNEL:
3447 /* TODO: convert from freq/flags to channel number */
3449 case IEEE80211_RADIOTAP_RATE:
3450 datarate = *iter.this_arg * 5;
3452 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3453 ssi_signal = *iter.this_arg;
3458 if (rxflags && injected)
3462 handle_frame(drv, buf + iter.max_length,
3463 len - iter.max_length, datarate, ssi_signal);
3465 handle_tx_callback(drv->ctx, buf + iter.max_length,
3466 len - iter.max_length, !failed);
3471 * we post-process the filter code later and rewrite
3472 * this to the offset to the last instruction
3477 static struct sock_filter msock_filter_insns[] = {
3479 * do a little-endian load of the radiotap length field
3481 /* load lower byte into A */
3482 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3483 /* put it into X (== index register) */
3484 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3485 /* load upper byte into A */
3486 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3487 /* left-shift it by 8 */
3488 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3490 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3491 /* put result into X */
3492 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3495 * Allow management frames through, this also gives us those
3496 * management frames that we sent ourselves with status
3498 /* load the lower byte of the IEEE 802.11 frame control field */
3499 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3500 /* mask off frame type and version */
3501 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3502 /* accept frame if it's both 0, fall through otherwise */
3503 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3506 * TODO: add a bit to radiotap RX flags that indicates
3507 * that the sending station is not associated, then
3508 * add a filter here that filters on our DA and that flag
3509 * to allow us to deauth frames to that bad station.
3511 * Not a regression -- we didn't do it before either.
3516 * drop non-data frames
3518 /* load the lower byte of the frame control field */
3519 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3520 /* mask off QoS bit */
3521 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3522 /* drop non-data frames */
3523 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3525 /* load the upper byte of the frame control field */
3526 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3527 /* mask off toDS/fromDS */
3528 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3529 /* accept WDS frames */
3530 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3533 * add header length to index
3535 /* load the lower byte of the frame control field */
3536 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3537 /* mask off QoS bit */
3538 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3539 /* right shift it by 6 to give 0 or 2 */
3540 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3541 /* add data frame header length */
3542 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3543 /* add index, was start of 802.11 header */
3544 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3545 /* move to index, now start of LL header */
3546 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3549 * Accept empty data frames, we use those for
3552 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3553 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3556 * Accept EAPOL frames
3558 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3559 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3560 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3561 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3563 /* keep these last two statements or change the code below */
3564 /* return 0 == "DROP" */
3565 BPF_STMT(BPF_RET | BPF_K, 0),
3566 /* return ~0 == "keep all" */
3567 BPF_STMT(BPF_RET | BPF_K, ~0),
3570 static struct sock_fprog msock_filter = {
3571 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3572 .filter = msock_filter_insns,
3576 static int add_monitor_filter(int s)
3580 /* rewrite all PASS/FAIL jump offsets */
3581 for (idx = 0; idx < msock_filter.len; idx++) {
3582 struct sock_filter *insn = &msock_filter_insns[idx];
3584 if (BPF_CLASS(insn->code) == BPF_JMP) {
3585 if (insn->code == (BPF_JMP|BPF_JA)) {
3586 if (insn->k == PASS)
3587 insn->k = msock_filter.len - idx - 2;
3588 else if (insn->k == FAIL)
3589 insn->k = msock_filter.len - idx - 3;
3592 if (insn->jt == PASS)
3593 insn->jt = msock_filter.len - idx - 2;
3594 else if (insn->jt == FAIL)
3595 insn->jt = msock_filter.len - idx - 3;
3597 if (insn->jf == PASS)
3598 insn->jf = msock_filter.len - idx - 2;
3599 else if (insn->jf == FAIL)
3600 insn->jf = msock_filter.len - idx - 3;
3604 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3605 &msock_filter, sizeof(msock_filter))) {
3606 perror("SO_ATTACH_FILTER");
3614 static void nl80211_remove_monitor_interface(
3615 struct wpa_driver_nl80211_data *drv)
3617 if (drv->monitor_ifidx >= 0) {
3618 nl80211_remove_iface(drv, drv->monitor_ifidx);
3619 drv->monitor_ifidx = -1;
3621 if (drv->monitor_sock >= 0) {
3622 eloop_unregister_read_sock(drv->monitor_sock);
3623 close(drv->monitor_sock);
3624 drv->monitor_sock = -1;
3630 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3633 struct sockaddr_ll ll;
3637 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3638 buf[IFNAMSIZ - 1] = '\0';
3640 drv->monitor_ifidx =
3641 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3644 if (drv->monitor_ifidx < 0)
3647 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3650 memset(&ll, 0, sizeof(ll));
3651 ll.sll_family = AF_PACKET;
3652 ll.sll_ifindex = drv->monitor_ifidx;
3653 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3654 if (drv->monitor_sock < 0) {
3655 perror("socket[PF_PACKET,SOCK_RAW]");
3659 if (add_monitor_filter(drv->monitor_sock)) {
3660 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3661 "interface; do filtering in user space");
3662 /* This works, but will cost in performance. */
3665 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3666 perror("monitor socket bind");
3670 optlen = sizeof(optval);
3673 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3674 perror("Failed to set socket priority");
3678 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3680 printf("Could not register monitor read socket\n");
3686 nl80211_remove_monitor_interface(drv);
3691 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3693 static int wpa_driver_nl80211_hapd_send_eapol(
3694 void *priv, const u8 *addr, const u8 *data,
3695 size_t data_len, int encrypt, const u8 *own_addr)
3697 struct i802_bss *bss = priv;
3698 struct wpa_driver_nl80211_data *drv = bss->drv;
3699 struct ieee80211_hdr *hdr;
3704 int qos = sta->flags & WPA_STA_WMM;
3709 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3711 hdr = os_zalloc(len);
3713 printf("malloc() failed for i802_send_data(len=%lu)\n",
3714 (unsigned long) len);
3718 hdr->frame_control =
3719 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3720 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3722 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3723 #if 0 /* To be enabled if qos determination is added above */
3725 hdr->frame_control |=
3726 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3730 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3731 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3732 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3733 pos = (u8 *) (hdr + 1);
3735 #if 0 /* To be enabled if qos determination is added above */
3737 /* add an empty QoS header if needed */
3744 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3745 pos += sizeof(rfc1042_header);
3746 WPA_PUT_BE16(pos, ETH_P_PAE);
3748 memcpy(pos, data, data_len);
3750 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3752 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3754 (unsigned long) len, errno, strerror(errno));
3762 static u32 sta_flags_nl80211(int flags)
3766 if (flags & WPA_STA_AUTHORIZED)
3767 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3768 if (flags & WPA_STA_WMM)
3769 f |= BIT(NL80211_STA_FLAG_WME);
3770 if (flags & WPA_STA_SHORT_PREAMBLE)
3771 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3772 if (flags & WPA_STA_MFP)
3773 f |= BIT(NL80211_STA_FLAG_MFP);
3779 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3781 int flags_or, int flags_and)
3783 struct i802_bss *bss = priv;
3784 struct wpa_driver_nl80211_data *drv = bss->drv;
3785 struct nl_msg *msg, *flags = NULL;
3786 struct nl80211_sta_flag_update upd;
3788 msg = nlmsg_alloc();
3792 flags = nlmsg_alloc();
3798 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3799 0, NL80211_CMD_SET_STATION, 0);
3801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3802 if_nametoindex(bss->ifname));
3803 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3806 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3807 * can be removed eventually.
3809 if (total_flags & WPA_STA_AUTHORIZED)
3810 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3812 if (total_flags & WPA_STA_WMM)
3813 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3815 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3816 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3818 if (total_flags & WPA_STA_MFP)
3819 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3821 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3822 goto nla_put_failure;
3824 os_memset(&upd, 0, sizeof(upd));
3825 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3826 upd.set = sta_flags_nl80211(flags_or);
3827 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3831 return send_and_recv_msgs(drv, msg, NULL, NULL);
3838 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3839 struct wpa_driver_associate_params *params)
3842 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3844 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3845 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3846 nl80211_remove_monitor_interface(drv);
3850 /* TODO: setup monitor interface (and add code somewhere to remove this
3851 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3857 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3862 msg = nlmsg_alloc();
3866 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3867 NL80211_CMD_LEAVE_IBSS, 0);
3868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3869 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3872 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3873 "(%s)", ret, strerror(-ret));
3874 goto nla_put_failure;
3878 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3886 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3887 struct wpa_driver_associate_params *params)
3893 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3895 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3896 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3902 msg = nlmsg_alloc();
3906 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3907 NL80211_CMD_JOIN_IBSS, 0);
3908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3910 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3911 goto nla_put_failure;
3913 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3914 params->ssid, params->ssid_len);
3915 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3917 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3918 drv->ssid_len = params->ssid_len;
3920 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3921 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3923 ret = nl80211_set_conn_keys(params, msg);
3925 goto nla_put_failure;
3927 if (params->wpa_ie) {
3928 wpa_hexdump(MSG_DEBUG,
3929 " * Extra IEs for Beacon/Probe Response frames",
3930 params->wpa_ie, params->wpa_ie_len);
3931 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3935 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3938 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3939 ret, strerror(-ret));
3941 if (ret == -EALREADY && count == 1) {
3942 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3944 nl80211_leave_ibss(drv);
3949 goto nla_put_failure;
3952 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3960 static int wpa_driver_nl80211_connect(
3961 struct wpa_driver_nl80211_data *drv,
3962 struct wpa_driver_associate_params *params)
3965 enum nl80211_auth_type type;
3968 msg = nlmsg_alloc();
3972 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3973 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3974 NL80211_CMD_CONNECT, 0);
3976 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3977 if (params->bssid) {
3978 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3979 MAC2STR(params->bssid));
3980 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3983 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3984 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3987 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3988 params->ssid, params->ssid_len);
3989 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3991 if (params->ssid_len > sizeof(drv->ssid))
3992 goto nla_put_failure;
3993 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3994 drv->ssid_len = params->ssid_len;
3996 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3998 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4001 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4002 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4003 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4004 type = NL80211_AUTHTYPE_SHARED_KEY;
4005 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4006 type = NL80211_AUTHTYPE_NETWORK_EAP;
4007 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4008 type = NL80211_AUTHTYPE_FT;
4010 goto nla_put_failure;
4012 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4013 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4015 if (params->wpa_ie && params->wpa_ie_len) {
4016 enum nl80211_wpa_versions ver;
4018 if (params->wpa_ie[0] == WLAN_EID_RSN)
4019 ver = NL80211_WPA_VERSION_2;
4021 ver = NL80211_WPA_VERSION_1;
4023 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4024 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4027 if (params->pairwise_suite != CIPHER_NONE) {
4030 switch (params->pairwise_suite) {
4032 cipher = WLAN_CIPHER_SUITE_WEP40;
4035 cipher = WLAN_CIPHER_SUITE_WEP104;
4038 cipher = WLAN_CIPHER_SUITE_CCMP;
4042 cipher = WLAN_CIPHER_SUITE_TKIP;
4045 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4048 if (params->group_suite != CIPHER_NONE) {
4051 switch (params->group_suite) {
4053 cipher = WLAN_CIPHER_SUITE_WEP40;
4056 cipher = WLAN_CIPHER_SUITE_WEP104;
4059 cipher = WLAN_CIPHER_SUITE_CCMP;
4063 cipher = WLAN_CIPHER_SUITE_TKIP;
4066 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4069 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4070 params->key_mgmt_suite == KEY_MGMT_PSK) {
4071 int mgmt = WLAN_AKM_SUITE_PSK;
4073 switch (params->key_mgmt_suite) {
4074 case KEY_MGMT_802_1X:
4075 mgmt = WLAN_AKM_SUITE_8021X;
4079 mgmt = WLAN_AKM_SUITE_PSK;
4082 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4085 ret = nl80211_set_conn_keys(params, msg);
4087 goto nla_put_failure;
4089 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4092 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4093 "(%s)", ret, strerror(-ret));
4094 goto nla_put_failure;
4097 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4106 static int wpa_driver_nl80211_associate(
4107 void *priv, struct wpa_driver_associate_params *params)
4109 struct i802_bss *bss = priv;
4110 struct wpa_driver_nl80211_data *drv = bss->drv;
4114 if (params->mode == IEEE80211_MODE_AP)
4115 return wpa_driver_nl80211_ap(drv, params);
4117 if (params->mode == IEEE80211_MODE_IBSS)
4118 return wpa_driver_nl80211_ibss(drv, params);
4120 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4121 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4123 return wpa_driver_nl80211_connect(drv, params);
4126 drv->associated = 0;
4128 msg = nlmsg_alloc();
4132 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4134 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4135 NL80211_CMD_ASSOCIATE, 0);
4137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4138 if (params->bssid) {
4139 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4140 MAC2STR(params->bssid));
4141 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4144 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4145 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4146 drv->assoc_freq = params->freq;
4148 drv->assoc_freq = 0;
4150 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4151 params->ssid, params->ssid_len);
4152 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4154 if (params->ssid_len > sizeof(drv->ssid))
4155 goto nla_put_failure;
4156 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4157 drv->ssid_len = params->ssid_len;
4159 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4161 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4164 #ifdef CONFIG_IEEE80211W
4165 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4166 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4167 #endif /* CONFIG_IEEE80211W */
4169 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4171 if (params->prev_bssid) {
4172 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4173 MAC2STR(params->prev_bssid));
4174 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4175 params->prev_bssid);
4179 wpa_printf(MSG_DEBUG, " * P2P group");
4181 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4184 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4185 "(%s)", ret, strerror(-ret));
4186 nl80211_dump_scan(drv);
4187 goto nla_put_failure;
4190 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4199 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4200 int ifindex, int mode)
4205 msg = nlmsg_alloc();
4209 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4210 0, NL80211_CMD_SET_INTERFACE, 0);
4211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4212 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4214 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4218 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4219 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4224 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4226 struct i802_bss *bss = priv;
4227 struct wpa_driver_nl80211_data *drv = bss->drv;
4234 nlmode = NL80211_IFTYPE_STATION;
4237 nlmode = NL80211_IFTYPE_ADHOC;
4240 nlmode = NL80211_IFTYPE_AP;
4246 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4247 drv->nlmode = nlmode;
4252 if (nlmode == drv->nlmode) {
4253 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4254 "requested mode - ignore error");
4256 goto done; /* Already in the requested mode */
4259 /* mac80211 doesn't allow mode changes while the device is up, so
4260 * take the device down, try to set the mode again, and bring the
4263 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4265 for (i = 0; i < 10; i++) {
4266 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4268 /* Try to set the mode again while the interface is
4270 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4271 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4277 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4279 os_sleep(0, 100000);
4283 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4284 "interface is down");
4285 drv->nlmode = nlmode;
4289 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4290 /* Setup additional AP mode functionality if needed */
4291 if (drv->monitor_ifidx < 0 &&
4292 nl80211_create_monitor_interface(drv))
4294 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4295 /* Remove additional AP mode functionality */
4296 nl80211_remove_monitor_interface(drv);
4297 bss->beacon_set = 0;
4301 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4302 "from %d failed", nlmode, drv->nlmode);
4308 static int wpa_driver_nl80211_get_capa(void *priv,
4309 struct wpa_driver_capa *capa)
4311 struct i802_bss *bss = priv;
4312 struct wpa_driver_nl80211_data *drv = bss->drv;
4313 if (!drv->has_capability)
4315 os_memcpy(capa, &drv->capa, sizeof(*capa));
4320 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4322 struct i802_bss *bss = priv;
4323 struct wpa_driver_nl80211_data *drv = bss->drv;
4325 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4326 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4327 drv->operstate = state;
4328 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4329 state ? IF_OPER_UP : IF_OPER_DORMANT);
4333 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4335 struct i802_bss *bss = priv;
4336 struct wpa_driver_nl80211_data *drv = bss->drv;
4338 struct nl80211_sta_flag_update upd;
4340 msg = nlmsg_alloc();
4344 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4345 0, NL80211_CMD_SET_STATION, 0);
4347 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4348 if_nametoindex(bss->ifname));
4349 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4351 os_memset(&upd, 0, sizeof(upd));
4352 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4354 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4355 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4357 return send_and_recv_msgs(drv, msg, NULL, NULL);
4365 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4370 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4372 for (i = 0; i < drv->num_if_indices; i++) {
4373 if (drv->if_indices[i] == 0) {
4374 drv->if_indices[i] = ifidx;
4379 if (drv->if_indices != drv->default_if_indices)
4380 old = drv->if_indices;
4384 drv->if_indices = os_realloc(old,
4385 sizeof(int) * (drv->num_if_indices + 1));
4386 if (!drv->if_indices) {
4388 drv->if_indices = drv->default_if_indices;
4390 drv->if_indices = old;
4391 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4393 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4396 os_memcpy(drv->if_indices, drv->default_if_indices,
4397 sizeof(drv->default_if_indices));
4398 drv->if_indices[drv->num_if_indices] = ifidx;
4399 drv->num_if_indices++;
4403 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4407 for (i = 0; i < drv->num_if_indices; i++) {
4408 if (drv->if_indices[i] == ifidx) {
4409 drv->if_indices[i] = 0;
4416 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4420 for (i = 0; i < drv->num_if_indices; i++)
4421 if (drv->if_indices[i] == ifidx)
4428 static inline int min_int(int a, int b)
4436 static int get_key_handler(struct nl_msg *msg, void *arg)
4438 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4439 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4441 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4442 genlmsg_attrlen(gnlh, 0), NULL);
4445 * TODO: validate the key index and mac address!
4446 * Otherwise, there's a race condition as soon as
4447 * the kernel starts sending key notifications.
4450 if (tb[NL80211_ATTR_KEY_SEQ])
4451 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4452 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4457 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4460 struct i802_bss *bss = priv;
4461 struct wpa_driver_nl80211_data *drv = bss->drv;
4464 msg = nlmsg_alloc();
4468 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4469 0, NL80211_CMD_GET_KEY, 0);
4472 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4473 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4474 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4478 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4484 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4487 struct i802_bss *bss = priv;
4488 struct wpa_driver_nl80211_data *drv = bss->drv;
4490 u8 rates[NL80211_MAX_SUPP_RATES];
4494 msg = nlmsg_alloc();
4498 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4499 NL80211_CMD_SET_BSS, 0);
4501 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4502 rates[rates_len++] = basic_rates[i] / 5;
4504 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4506 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4508 return send_and_recv_msgs(drv, msg, NULL, NULL);
4513 #endif /* HOSTAPD */
4516 /* Set kernel driver on given frequency (MHz) */
4517 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4519 struct i802_bss *bss = priv;
4520 struct wpa_driver_nl80211_data *drv = bss->drv;
4521 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4522 freq->sec_channel_offset);
4528 static int i802_set_rts(void *priv, int rts)
4530 struct i802_bss *bss = priv;
4531 struct wpa_driver_nl80211_data *drv = bss->drv;
4536 msg = nlmsg_alloc();
4545 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4546 0, NL80211_CMD_SET_WIPHY, 0);
4547 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4548 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4550 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4554 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4555 "%d (%s)", rts, ret, strerror(-ret));
4560 static int i802_set_frag(void *priv, int frag)
4562 struct i802_bss *bss = priv;
4563 struct wpa_driver_nl80211_data *drv = bss->drv;
4568 msg = nlmsg_alloc();
4577 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4578 0, NL80211_CMD_SET_WIPHY, 0);
4579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4580 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4582 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4586 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4587 "%d: %d (%s)", frag, ret, strerror(-ret));
4592 static int i802_flush(void *priv)
4594 struct i802_bss *bss = priv;
4595 struct wpa_driver_nl80211_data *drv = bss->drv;
4598 msg = nlmsg_alloc();
4602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4603 0, NL80211_CMD_DEL_STATION, 0);
4606 * XXX: FIX! this needs to flush all VLANs too
4608 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4609 if_nametoindex(bss->ifname));
4611 return send_and_recv_msgs(drv, msg, NULL, NULL);
4617 static int get_sta_handler(struct nl_msg *msg, void *arg)
4619 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4620 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4621 struct hostap_sta_driver_data *data = arg;
4622 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4623 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4624 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4625 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4626 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4627 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4628 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4631 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4632 genlmsg_attrlen(gnlh, 0), NULL);
4635 * TODO: validate the interface and mac address!
4636 * Otherwise, there's a race condition as soon as
4637 * the kernel starts sending station notifications.
4640 if (!tb[NL80211_ATTR_STA_INFO]) {
4641 wpa_printf(MSG_DEBUG, "sta stats missing!");
4644 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4645 tb[NL80211_ATTR_STA_INFO],
4647 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4651 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4652 data->inactive_msec =
4653 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4654 if (stats[NL80211_STA_INFO_RX_BYTES])
4655 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4656 if (stats[NL80211_STA_INFO_TX_BYTES])
4657 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4658 if (stats[NL80211_STA_INFO_RX_PACKETS])
4660 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4661 if (stats[NL80211_STA_INFO_TX_PACKETS])
4663 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4668 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4671 struct i802_bss *bss = priv;
4672 struct wpa_driver_nl80211_data *drv = bss->drv;
4675 os_memset(data, 0, sizeof(*data));
4676 msg = nlmsg_alloc();
4680 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4681 0, NL80211_CMD_GET_STATION, 0);
4683 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4684 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4686 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4692 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4693 int cw_min, int cw_max, int burst_time)
4695 struct i802_bss *bss = priv;
4696 struct wpa_driver_nl80211_data *drv = bss->drv;
4698 struct nlattr *txq, *params;
4700 msg = nlmsg_alloc();
4704 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4705 0, NL80211_CMD_SET_WIPHY, 0);
4707 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4709 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4711 goto nla_put_failure;
4713 /* We are only sending parameters for a single TXQ at a time */
4714 params = nla_nest_start(msg, 1);
4716 goto nla_put_failure;
4718 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4719 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4720 * 32 usec, so need to convert the value here. */
4721 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4722 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4723 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4724 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4726 nla_nest_end(msg, params);
4728 nla_nest_end(msg, txq);
4730 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4737 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4739 struct i802_bss *bss = priv;
4740 struct wpa_driver_nl80211_data *drv = bss->drv;
4743 msg = nlmsg_alloc();
4747 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4748 NL80211_CMD_SET_BSS, 0);
4751 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4753 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4755 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4759 return send_and_recv_msgs(drv, msg, NULL, NULL);
4765 static int i802_set_cts_protect(void *priv, int value)
4767 return i802_set_bss(priv, value, -1, -1);
4771 static int i802_set_preamble(void *priv, int value)
4773 return i802_set_bss(priv, -1, value, -1);
4777 static int i802_set_short_slot_time(void *priv, int value)
4779 return i802_set_bss(priv, -1, -1, value);
4783 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4784 const char *ifname, int vlan_id)
4786 struct i802_bss *bss = priv;
4787 struct wpa_driver_nl80211_data *drv = bss->drv;
4791 msg = nlmsg_alloc();
4795 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4796 0, NL80211_CMD_SET_STATION, 0);
4798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4799 if_nametoindex(bss->ifname));
4800 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4801 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4802 if_nametoindex(ifname));
4804 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4806 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4807 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4808 MAC2STR(addr), ifname, vlan_id, ret,
4816 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4818 struct i802_bss *bss = priv;
4819 struct wpa_driver_nl80211_data *drv = bss->drv;
4820 char name[IFNAMSIZ + 1];
4822 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4823 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4824 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4826 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4829 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4830 return i802_set_sta_vlan(priv, addr, name, 0);
4832 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4833 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4839 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4841 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4842 struct sockaddr_ll lladdr;
4843 unsigned char buf[3000];
4845 socklen_t fromlen = sizeof(lladdr);
4847 len = recvfrom(sock, buf, sizeof(buf), 0,
4848 (struct sockaddr *)&lladdr, &fromlen);
4854 if (have_ifidx(drv, lladdr.sll_ifindex))
4855 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4859 static int i802_get_inact_sec(void *priv, const u8 *addr)
4861 struct hostap_sta_driver_data data;
4864 data.inactive_msec = (unsigned long) -1;
4865 ret = i802_read_sta_data(priv, &data, addr);
4866 if (ret || data.inactive_msec == (unsigned long) -1)
4868 return data.inactive_msec / 1000;
4872 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4881 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4884 struct i802_bss *bss = priv;
4885 struct ieee80211_mgmt mgmt;
4887 memset(&mgmt, 0, sizeof(mgmt));
4888 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4889 WLAN_FC_STYPE_DEAUTH);
4890 memcpy(mgmt.da, addr, ETH_ALEN);
4891 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4892 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4893 mgmt.u.deauth.reason_code = host_to_le16(reason);
4894 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4896 sizeof(mgmt.u.deauth));
4900 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4903 struct i802_bss *bss = priv;
4904 struct ieee80211_mgmt mgmt;
4906 memset(&mgmt, 0, sizeof(mgmt));
4907 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4908 WLAN_FC_STYPE_DISASSOC);
4909 memcpy(mgmt.da, addr, ETH_ALEN);
4910 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4911 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4912 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4913 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4915 sizeof(mgmt.u.disassoc));
4919 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4920 const char *brname, const char *ifname)
4923 char in_br[IFNAMSIZ];
4925 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4926 ifindex = if_nametoindex(brname);
4929 * Bridge was configured, but the bridge device does
4930 * not exist. Try to add it now.
4932 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4933 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4934 "bridge interface %s: %s",
4935 brname, strerror(errno));
4938 drv->added_bridge = 1;
4939 add_ifidx(drv, if_nametoindex(brname));
4942 if (linux_br_get(in_br, ifname) == 0) {
4943 if (os_strcmp(in_br, brname) == 0)
4944 return 0; /* already in the bridge */
4946 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4947 "bridge %s", ifname, in_br);
4948 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4949 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4950 "remove interface %s from bridge "
4952 ifname, brname, strerror(errno));
4957 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4959 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4960 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4961 "into bridge %s: %s",
4962 ifname, brname, strerror(errno));
4965 drv->added_if_into_bridge = 1;
4971 static void *i802_init(struct hostapd_data *hapd,
4972 struct wpa_init_params *params)
4974 struct wpa_driver_nl80211_data *drv;
4975 struct i802_bss *bss;
4977 char brname[IFNAMSIZ];
4978 int ifindex, br_ifindex;
4981 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4986 if (linux_br_get(brname, params->ifname) == 0) {
4987 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4988 params->ifname, brname);
4989 br_ifindex = if_nametoindex(brname);
4995 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4996 drv->if_indices = drv->default_if_indices;
4997 for (i = 0; i < params->num_bridge; i++) {
4998 if (params->bridge[i]) {
4999 ifindex = if_nametoindex(params->bridge[i]);
5001 add_ifidx(drv, ifindex);
5002 if (ifindex == br_ifindex)
5006 if (!br_added && br_ifindex &&
5007 (params->num_bridge == 0 || !params->bridge[0]))
5008 add_ifidx(drv, br_ifindex);
5010 /* start listening for EAPOL on the default AP interface */
5011 add_ifidx(drv, drv->ifindex);
5013 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5016 if (params->bssid) {
5017 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5022 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5023 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5024 "into AP mode", bss->ifname);
5028 if (params->num_bridge && params->bridge[0] &&
5029 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5032 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5035 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5036 if (drv->eapol_sock < 0) {
5037 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5041 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5043 printf("Could not register read socket for eapol\n");
5047 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5053 nl80211_remove_monitor_interface(drv);
5054 if (drv->ioctl_sock >= 0)
5055 close(drv->ioctl_sock);
5057 genl_family_put(drv->nl80211);
5058 nl_cache_free(drv->nl_cache);
5059 nl80211_handle_destroy(drv->nl_handle);
5060 nl_cb_put(drv->nl_cb);
5067 static void i802_deinit(void *priv)
5069 wpa_driver_nl80211_deinit(priv);
5072 #endif /* HOSTAPD */
5075 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5076 enum wpa_driver_if_type type)
5079 case WPA_IF_STATION:
5080 case WPA_IF_P2P_CLIENT:
5081 case WPA_IF_P2P_GROUP:
5082 return NL80211_IFTYPE_STATION;
5083 case WPA_IF_AP_VLAN:
5084 return NL80211_IFTYPE_AP_VLAN;
5087 return NL80211_IFTYPE_AP;
5093 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5094 const char *ifname, const u8 *addr,
5095 void *bss_ctx, void **drv_priv,
5096 char *force_ifname, u8 *if_addr)
5098 struct i802_bss *bss = priv;
5099 struct wpa_driver_nl80211_data *drv = bss->drv;
5102 struct i802_bss *new_bss = NULL;
5104 if (type == WPA_IF_AP_BSS) {
5105 new_bss = os_zalloc(sizeof(*new_bss));
5106 if (new_bss == NULL)
5109 #endif /* HOSTAPD */
5112 os_memcpy(if_addr, addr, ETH_ALEN);
5113 ifidx = nl80211_create_iface(drv, ifname,
5114 wpa_driver_nl80211_if_type(type), addr,
5119 #endif /* HOSTAPD */
5124 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5128 if (type == WPA_IF_AP_BSS) {
5129 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5130 nl80211_remove_iface(drv, ifidx);
5134 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5135 new_bss->ifindex = ifidx;
5137 new_bss->next = drv->first_bss.next;
5138 drv->first_bss.next = new_bss;
5140 *drv_priv = new_bss;
5142 #endif /* HOSTAPD */
5148 static int wpa_driver_nl80211_if_remove(void *priv,
5149 enum wpa_driver_if_type type,
5152 struct i802_bss *bss = priv;
5153 struct wpa_driver_nl80211_data *drv = bss->drv;
5154 int ifindex = if_nametoindex(ifname);
5156 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5157 __func__, type, ifname, ifindex);
5160 nl80211_remove_iface(drv, ifindex);
5163 if (type != WPA_IF_AP_BSS)
5166 if (bss != &drv->first_bss) {
5167 struct i802_bss *tbss = &drv->first_bss;
5170 if (tbss->next != bss)
5173 tbss->next = bss->next;
5178 #endif /* HOSTAPD */
5184 static int cookie_handler(struct nl_msg *msg, void *arg)
5186 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5187 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5189 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5190 genlmsg_attrlen(gnlh, 0), NULL);
5191 if (tb[NL80211_ATTR_COOKIE])
5192 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5197 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5198 unsigned int freq, const u8 *buf,
5199 size_t buf_len, u64 *cookie_out)
5205 msg = nlmsg_alloc();
5209 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5210 NL80211_CMD_FRAME, 0);
5212 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5213 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5214 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5217 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5220 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5221 "(%s)", ret, strerror(-ret));
5222 goto nla_put_failure;
5224 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5225 "cookie 0x%llx", (long long unsigned int) cookie);
5228 *cookie_out = cookie;
5236 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5237 const u8 *dst, const u8 *src,
5239 const u8 *data, size_t data_len)
5241 struct i802_bss *bss = priv;
5242 struct wpa_driver_nl80211_data *drv = bss->drv;
5245 struct ieee80211_hdr *hdr;
5247 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5250 buf = os_zalloc(24 + data_len);
5253 os_memcpy(buf + 24, data, data_len);
5254 hdr = (struct ieee80211_hdr *) buf;
5255 hdr->frame_control =
5256 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5257 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5258 os_memcpy(hdr->addr2, src, ETH_ALEN);
5259 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5261 if (drv->nlmode == NL80211_IFTYPE_AP)
5262 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5264 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5265 &drv->send_action_cookie);
5272 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5273 unsigned int duration)
5275 struct i802_bss *bss = priv;
5276 struct wpa_driver_nl80211_data *drv = bss->drv;
5281 msg = nlmsg_alloc();
5285 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5286 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5288 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5289 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5290 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5293 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5295 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5296 "0x%llx for freq=%u MHz duration=%u",
5297 (long long unsigned int) cookie, freq, duration);
5298 drv->remain_on_chan_cookie = cookie;
5301 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5302 "(freq=%d duration=%u): %d (%s)",
5303 freq, duration, ret, strerror(-ret));
5309 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5311 struct i802_bss *bss = priv;
5312 struct wpa_driver_nl80211_data *drv = bss->drv;
5316 if (!drv->pending_remain_on_chan) {
5317 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5322 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5324 (long long unsigned int) drv->remain_on_chan_cookie);
5326 msg = nlmsg_alloc();
5330 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5331 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5333 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5334 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5336 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5339 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5340 "%d (%s)", ret, strerror(-ret));
5346 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5349 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5350 if (drv->monitor_ifidx < 0)
5351 return; /* monitor interface already removed */
5353 if (drv->nlmode != NL80211_IFTYPE_STATION)
5354 return; /* not in station mode anymore */
5356 if (drv->probe_req_report)
5357 return; /* reporting enabled */
5359 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5360 "Probe Request reporting needed anymore");
5361 nl80211_remove_monitor_interface(drv);
5365 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5367 struct i802_bss *bss = priv;
5368 struct wpa_driver_nl80211_data *drv = bss->drv;
5370 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5371 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5372 "allowed in station mode (iftype=%d)",
5376 drv->probe_req_report = report;
5379 eloop_cancel_timeout(
5380 wpa_driver_nl80211_probe_req_report_timeout,
5382 if (drv->monitor_ifidx < 0 &&
5383 nl80211_create_monitor_interface(drv))
5387 * It takes a while to remove the monitor interface, so try to
5388 * avoid doing this if it is needed again shortly. Instead,
5389 * schedule the interface to be removed later if no need for it
5392 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5393 "to be removed after 10 seconds of no use");
5394 eloop_register_timeout(
5395 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5403 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5404 int ifindex, int disabled)
5407 struct nlattr *bands, *band;
5410 msg = nlmsg_alloc();
5414 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5415 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5416 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5418 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5420 goto nla_put_failure;
5423 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5424 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5425 * rates. All 5 GHz rates are left enabled.
5427 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5429 goto nla_put_failure;
5430 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5431 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5432 nla_nest_end(msg, band);
5434 nla_nest_end(msg, bands);
5436 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5439 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5440 "(%s)", ret, strerror(-ret));
5451 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5453 struct i802_bss *bss = priv;
5454 struct wpa_driver_nl80211_data *drv = bss->drv;
5455 drv->disable_11b_rates = disabled;
5456 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5460 static int wpa_driver_nl80211_deinit_ap(void *priv)
5462 struct i802_bss *bss = priv;
5463 struct wpa_driver_nl80211_data *drv = bss->drv;
5464 if (drv->nlmode != NL80211_IFTYPE_AP)
5466 wpa_driver_nl80211_del_beacon(drv);
5467 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5471 static void wpa_driver_nl80211_resume(void *priv)
5473 struct i802_bss *bss = priv;
5474 struct wpa_driver_nl80211_data *drv = bss->drv;
5475 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5476 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5482 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5483 const u8 *ies, size_t ies_len)
5485 struct i802_bss *bss = priv;
5486 struct wpa_driver_nl80211_data *drv = bss->drv;
5490 u8 own_addr[ETH_ALEN];
5492 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5496 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5497 "action %d", action);
5502 * Action frame payload:
5503 * Category[1] = 6 (Fast BSS Transition)
5504 * Action[1] = 1 (Fast BSS Transition Request)
5510 data_len = 2 + 2 * ETH_ALEN + ies_len;
5511 data = os_malloc(data_len);
5515 *pos++ = 0x06; /* FT Action category */
5517 os_memcpy(pos, own_addr, ETH_ALEN);
5519 os_memcpy(pos, target_ap, ETH_ALEN);
5521 os_memcpy(pos, ies, ies_len);
5523 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5524 own_addr, drv->bssid,
5532 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5534 struct i802_bss *bss = priv;
5535 struct wpa_driver_nl80211_data *drv = bss->drv;
5536 struct nl_msg *msg, *cqm = NULL;
5538 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5539 "hysteresis=%d", threshold, hysteresis);
5541 msg = nlmsg_alloc();
5545 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5546 0, NL80211_CMD_SET_CQM, 0);
5548 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5550 cqm = nlmsg_alloc();
5554 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5555 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5556 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5558 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5570 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5573 struct i802_bss *bss = priv;
5574 struct wpa_driver_nl80211_data *drv = bss->drv;
5575 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5579 static int nl80211_set_intra_bss(void *priv, int enabled)
5581 struct i802_bss *bss = priv;
5582 struct wpa_driver_nl80211_data *drv = bss->drv;
5585 msg = nlmsg_alloc();
5589 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5590 NL80211_CMD_SET_BSS, 0);
5592 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5593 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5595 return send_and_recv_msgs(drv, msg, NULL, NULL);
5601 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5603 .desc = "Linux nl80211/cfg80211",
5604 .get_bssid = wpa_driver_nl80211_get_bssid,
5605 .get_ssid = wpa_driver_nl80211_get_ssid,
5606 .set_key = wpa_driver_nl80211_set_key,
5607 .scan2 = wpa_driver_nl80211_scan,
5608 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5609 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5610 .disassociate = wpa_driver_nl80211_disassociate,
5611 .authenticate = wpa_driver_nl80211_authenticate,
5612 .associate = wpa_driver_nl80211_associate,
5613 .init = wpa_driver_nl80211_init,
5614 .deinit = wpa_driver_nl80211_deinit,
5615 .get_capa = wpa_driver_nl80211_get_capa,
5616 .set_operstate = wpa_driver_nl80211_set_operstate,
5617 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5618 .set_country = wpa_driver_nl80211_set_country,
5619 .set_beacon = wpa_driver_nl80211_set_beacon,
5620 .if_add = wpa_driver_nl80211_if_add,
5621 .if_remove = wpa_driver_nl80211_if_remove,
5622 .send_mlme = wpa_driver_nl80211_send_mlme,
5623 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5624 .sta_add = wpa_driver_nl80211_sta_add,
5625 .sta_remove = wpa_driver_nl80211_sta_remove,
5626 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5627 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5629 .hapd_init = i802_init,
5630 .hapd_deinit = i802_deinit,
5631 .get_seqnum = i802_get_seqnum,
5632 .flush = i802_flush,
5633 .read_sta_data = i802_read_sta_data,
5634 .sta_deauth = i802_sta_deauth,
5635 .sta_disassoc = i802_sta_disassoc,
5636 .get_inact_sec = i802_get_inact_sec,
5637 .sta_clear_stats = i802_sta_clear_stats,
5638 .set_rts = i802_set_rts,
5639 .set_frag = i802_set_frag,
5640 .set_rate_sets = i802_set_rate_sets,
5641 .set_cts_protect = i802_set_cts_protect,
5642 .set_preamble = i802_set_preamble,
5643 .set_short_slot_time = i802_set_short_slot_time,
5644 .set_tx_queue_params = i802_set_tx_queue_params,
5645 .set_sta_vlan = i802_set_sta_vlan,
5646 .set_wds_sta = i802_set_wds_sta,
5647 #endif /* HOSTAPD */
5648 .set_freq = i802_set_freq,
5649 .send_action = wpa_driver_nl80211_send_action,
5650 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5651 .cancel_remain_on_channel =
5652 wpa_driver_nl80211_cancel_remain_on_channel,
5653 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5654 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5655 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5656 .resume = wpa_driver_nl80211_resume,
5657 .send_ft_action = nl80211_send_ft_action,
5658 .signal_monitor = nl80211_signal_monitor,
5659 .send_frame = nl80211_send_frame,
5660 .set_intra_bss = nl80211_set_intra_bss,