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_ACTION:
847 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
849 case NL80211_CMD_ACTION_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_ACTION:
1148 case NL80211_CMD_ACTION_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_action_frame(struct wpa_driver_nl80211_data *drv,
1594 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(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1609 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1612 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1613 "failed: ret=%d (%s)", ret, strerror(-ret));
1614 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1616 goto nla_put_failure;
1625 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1628 /* GAS Initial Request */
1629 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1631 /* GAS Initial Response */
1632 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1634 /* GAS Comeback Request */
1635 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1637 /* GAS Comeback Response */
1638 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1640 /* P2P Public Action */
1641 if (nl80211_register_action_frame(drv,
1642 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1646 if (nl80211_register_action_frame(drv,
1647 (u8 *) "\x7f\x50\x6f\x9a\x09",
1650 #endif /* CONFIG_P2P */
1652 /* FT Action frames */
1653 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1656 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1657 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1663 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1665 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1670 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1672 struct i802_bss *bss = &drv->first_bss;
1673 int send_rfkill_event = 0;
1675 drv->ifindex = if_nametoindex(bss->ifname);
1676 drv->first_bss.ifindex = drv->ifindex;
1679 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1680 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1681 "use managed mode");
1684 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1685 if (rfkill_is_blocked(drv->rfkill)) {
1686 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1687 "interface '%s' due to rfkill",
1689 drv->if_disabled = 1;
1690 send_rfkill_event = 1;
1692 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1693 "interface '%s' UP", bss->ifname);
1698 if (wpa_driver_nl80211_capa(drv))
1701 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1702 1, IF_OPER_DORMANT);
1703 #endif /* HOSTAPD */
1705 if (nl80211_register_action_frames(drv) < 0) {
1706 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1707 "frame processing - ignore for now");
1709 * Older kernel versions did not support this, so ignore the
1710 * error for now. Some functionality may not be available
1715 if (send_rfkill_event) {
1716 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1724 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1728 msg = nlmsg_alloc();
1732 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1733 0, NL80211_CMD_DEL_BEACON, 0);
1734 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1736 return send_and_recv_msgs(drv, msg, NULL, NULL);
1743 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1744 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1746 * Shut down driver interface and processing of driver events. Free
1747 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1749 static void wpa_driver_nl80211_deinit(void *priv)
1751 struct i802_bss *bss = priv;
1752 struct wpa_driver_nl80211_data *drv = bss->drv;
1754 if (drv->added_if_into_bridge) {
1755 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1757 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1758 "interface %s from bridge %s: %s",
1759 bss->ifname, drv->brname, strerror(errno));
1761 if (drv->added_bridge) {
1762 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1763 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1765 drv->brname, strerror(errno));
1768 nl80211_remove_monitor_interface(drv);
1770 if (drv->nlmode == NL80211_IFTYPE_AP)
1771 wpa_driver_nl80211_del_beacon(drv);
1774 if (drv->last_freq_ht) {
1775 /* Clear HT flags from the driver */
1776 struct hostapd_freq_params freq;
1777 os_memset(&freq, 0, sizeof(freq));
1778 freq.freq = drv->last_freq;
1779 i802_set_freq(priv, &freq);
1782 if (drv->eapol_sock >= 0) {
1783 eloop_unregister_read_sock(drv->eapol_sock);
1784 close(drv->eapol_sock);
1787 if (drv->if_indices != drv->default_if_indices)
1788 os_free(drv->if_indices);
1789 #endif /* HOSTAPD */
1791 if (drv->disable_11b_rates)
1792 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1794 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1795 netlink_deinit(drv->netlink);
1796 rfkill_deinit(drv->rfkill);
1798 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1800 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1801 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1803 if (drv->ioctl_sock >= 0)
1804 close(drv->ioctl_sock);
1806 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1807 genl_family_put(drv->nl80211);
1808 nl_cache_free(drv->nl_cache);
1809 nl_cache_free(drv->nl_cache_event);
1810 nl80211_handle_destroy(drv->nl_handle);
1811 nl80211_handle_destroy(drv->nl_handle_event);
1812 nl_cb_put(drv->nl_cb);
1814 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1817 os_free(drv->filter_ssids);
1824 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1825 * @eloop_ctx: Driver private data
1826 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1828 * This function can be used as registered timeout when starting a scan to
1829 * generate a scan completed event if the driver does not report this.
1831 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1833 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1834 if (drv->ap_scan_as_station) {
1835 wpa_driver_nl80211_set_mode(&drv->first_bss,
1837 drv->ap_scan_as_station = 0;
1839 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1840 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1845 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1846 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1847 * @params: Scan parameters
1848 * Returns: 0 on success, -1 on failure
1850 static int wpa_driver_nl80211_scan(void *priv,
1851 struct wpa_driver_scan_params *params)
1853 struct i802_bss *bss = priv;
1854 struct wpa_driver_nl80211_data *drv = bss->drv;
1855 int ret = 0, timeout;
1856 struct nl_msg *msg, *ssids, *freqs;
1859 msg = nlmsg_alloc();
1860 ssids = nlmsg_alloc();
1861 freqs = nlmsg_alloc();
1862 if (!msg || !ssids || !freqs) {
1869 os_free(drv->filter_ssids);
1870 drv->filter_ssids = params->filter_ssids;
1871 params->filter_ssids = NULL;
1872 drv->num_filter_ssids = params->num_filter_ssids;
1874 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1875 NL80211_CMD_TRIGGER_SCAN, 0);
1877 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1879 for (i = 0; i < params->num_ssids; i++) {
1880 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1881 params->ssids[i].ssid,
1882 params->ssids[i].ssid_len);
1883 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1884 params->ssids[i].ssid);
1886 if (params->num_ssids)
1887 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1889 if (params->extra_ies) {
1890 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1891 params->extra_ies, params->extra_ies_len);
1892 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1896 if (params->freqs) {
1897 for (i = 0; params->freqs[i]; i++) {
1898 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1899 "MHz", params->freqs[i]);
1900 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1902 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1905 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1908 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1909 "(%s)", ret, strerror(-ret));
1911 if (drv->nlmode == NL80211_IFTYPE_AP) {
1913 * mac80211 does not allow scan requests in AP mode, so
1914 * try to do this in station mode.
1916 if (wpa_driver_nl80211_set_mode(bss,
1917 IEEE80211_MODE_INFRA))
1918 goto nla_put_failure;
1920 if (wpa_driver_nl80211_scan(drv, params)) {
1921 wpa_driver_nl80211_set_mode(bss,
1923 goto nla_put_failure;
1926 /* Restore AP mode when processing scan results */
1927 drv->ap_scan_as_station = 1;
1930 goto nla_put_failure;
1932 goto nla_put_failure;
1933 #endif /* HOSTAPD */
1936 /* Not all drivers generate "scan completed" wireless event, so try to
1937 * read results after a timeout. */
1939 if (drv->scan_complete_events) {
1941 * The driver seems to deliver events to notify when scan is
1942 * complete, so use longer timeout to avoid race conditions
1943 * with scanning and following association request.
1947 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1948 "seconds", ret, timeout);
1949 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1950 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1961 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1963 const u8 *end, *pos;
1969 end = ies + ies_len;
1971 while (pos + 1 < end) {
1972 if (pos + 2 + pos[1] > end)
1983 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1984 const u8 *ie, size_t ie_len)
1989 if (drv->filter_ssids == NULL)
1992 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1996 for (i = 0; i < drv->num_filter_ssids; i++) {
1997 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1998 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2007 struct nl80211_bss_info_arg {
2008 struct wpa_driver_nl80211_data *drv;
2009 struct wpa_scan_results *res;
2012 static int bss_info_handler(struct nl_msg *msg, void *arg)
2014 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2015 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2016 struct nlattr *bss[NL80211_BSS_MAX + 1];
2017 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2018 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2019 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2020 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2021 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2022 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2023 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2024 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2025 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2026 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2027 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2028 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2030 struct nl80211_bss_info_arg *_arg = arg;
2031 struct wpa_scan_results *res = _arg->res;
2032 struct wpa_scan_res **tmp;
2033 struct wpa_scan_res *r;
2034 const u8 *ie, *beacon_ie;
2035 size_t ie_len, beacon_ie_len;
2038 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2039 genlmsg_attrlen(gnlh, 0), NULL);
2040 if (!tb[NL80211_ATTR_BSS])
2042 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2045 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2046 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2047 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2052 if (bss[NL80211_BSS_BEACON_IES]) {
2053 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2054 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2060 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2061 ie ? ie_len : beacon_ie_len))
2064 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2067 if (bss[NL80211_BSS_BSSID])
2068 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2070 if (bss[NL80211_BSS_FREQUENCY])
2071 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2072 if (bss[NL80211_BSS_BEACON_INTERVAL])
2073 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2074 if (bss[NL80211_BSS_CAPABILITY])
2075 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2076 r->flags |= WPA_SCAN_NOISE_INVALID;
2077 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2078 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2079 r->level /= 100; /* mBm to dBm */
2080 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2081 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2082 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2083 r->flags |= WPA_SCAN_LEVEL_INVALID;
2085 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2086 if (bss[NL80211_BSS_TSF])
2087 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2088 if (bss[NL80211_BSS_SEEN_MS_AGO])
2089 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2091 pos = (u8 *) (r + 1);
2093 os_memcpy(pos, ie, ie_len);
2096 r->beacon_ie_len = beacon_ie_len;
2098 os_memcpy(pos, beacon_ie, beacon_ie_len);
2100 if (bss[NL80211_BSS_STATUS]) {
2101 enum nl80211_bss_status status;
2102 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2104 case NL80211_BSS_STATUS_AUTHENTICATED:
2105 r->flags |= WPA_SCAN_AUTHENTICATED;
2107 case NL80211_BSS_STATUS_ASSOCIATED:
2108 r->flags |= WPA_SCAN_ASSOCIATED;
2115 tmp = os_realloc(res->res,
2116 (res->num + 1) * sizeof(struct wpa_scan_res *));
2121 tmp[res->num++] = r;
2128 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2131 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2132 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2133 "mismatch (" MACSTR ")", MAC2STR(addr));
2134 wpa_driver_nl80211_mlme(drv, addr,
2135 NL80211_CMD_DEAUTHENTICATE,
2136 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2141 static void wpa_driver_nl80211_check_bss_status(
2142 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2146 for (i = 0; i < res->num; i++) {
2147 struct wpa_scan_res *r = res->res[i];
2148 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2149 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2150 "indicates BSS status with " MACSTR
2151 " as authenticated",
2153 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2154 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2155 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2157 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2158 " in local state (auth=" MACSTR
2159 " assoc=" MACSTR ")",
2160 MAC2STR(drv->auth_bssid),
2161 MAC2STR(drv->bssid));
2162 clear_state_mismatch(drv, r->bssid);
2166 if (r->flags & WPA_SCAN_ASSOCIATED) {
2167 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2168 "indicate BSS status with " MACSTR
2171 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2173 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2174 "(not associated) does not match "
2176 clear_state_mismatch(drv, r->bssid);
2177 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2178 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2180 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2181 "(associated with " MACSTR ") does "
2182 "not match with BSS state",
2183 MAC2STR(drv->bssid));
2184 clear_state_mismatch(drv, r->bssid);
2185 clear_state_mismatch(drv, drv->bssid);
2192 static void wpa_scan_results_free(struct wpa_scan_results *res)
2199 for (i = 0; i < res->num; i++)
2200 os_free(res->res[i]);
2206 static struct wpa_scan_results *
2207 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2210 struct wpa_scan_results *res;
2212 struct nl80211_bss_info_arg arg;
2214 res = os_zalloc(sizeof(*res));
2217 msg = nlmsg_alloc();
2219 goto nla_put_failure;
2221 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2222 NL80211_CMD_GET_SCAN, 0);
2223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2227 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2230 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2231 (unsigned long) res->num);
2234 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2235 "(%s)", ret, strerror(-ret));
2238 wpa_scan_results_free(res);
2244 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2245 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2246 * Returns: Scan results on success, -1 on failure
2248 static struct wpa_scan_results *
2249 wpa_driver_nl80211_get_scan_results(void *priv)
2251 struct i802_bss *bss = priv;
2252 struct wpa_driver_nl80211_data *drv = bss->drv;
2253 struct wpa_scan_results *res;
2255 res = nl80211_get_scan_results(drv);
2257 wpa_driver_nl80211_check_bss_status(drv, res);
2262 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2264 struct wpa_scan_results *res;
2267 res = nl80211_get_scan_results(drv);
2269 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2273 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2274 for (i = 0; i < res->num; i++) {
2275 struct wpa_scan_res *r = res->res[i];
2276 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2277 (int) i, (int) res->num, MAC2STR(r->bssid),
2278 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2279 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2282 wpa_scan_results_free(res);
2286 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2287 enum wpa_alg alg, const u8 *addr,
2288 int key_idx, int set_tx,
2289 const u8 *seq, size_t seq_len,
2290 const u8 *key, size_t key_len)
2292 struct i802_bss *bss = priv;
2293 struct wpa_driver_nl80211_data *drv = bss->drv;
2294 int ifindex = if_nametoindex(ifname);
2298 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2299 "set_tx=%d seq_len=%lu key_len=%lu",
2300 __func__, ifindex, alg, addr, key_idx, set_tx,
2301 (unsigned long) seq_len, (unsigned long) key_len);
2303 msg = nlmsg_alloc();
2307 if (alg == WPA_ALG_NONE) {
2308 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2309 0, NL80211_CMD_DEL_KEY, 0);
2311 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2312 0, NL80211_CMD_NEW_KEY, 0);
2313 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2317 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2318 WLAN_CIPHER_SUITE_WEP40);
2320 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2321 WLAN_CIPHER_SUITE_WEP104);
2324 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2325 WLAN_CIPHER_SUITE_TKIP);
2328 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2329 WLAN_CIPHER_SUITE_CCMP);
2332 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2333 WLAN_CIPHER_SUITE_AES_CMAC);
2336 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2337 "algorithm %d", __func__, alg);
2344 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2346 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2348 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2349 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2351 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2354 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2355 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2358 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2359 ret, strerror(-ret));
2362 * If we failed or don't need to set the default TX key (below),
2365 if (ret || !set_tx || alg == WPA_ALG_NONE)
2371 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2373 #endif /* HOSTAPD */
2375 msg = nlmsg_alloc();
2379 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2380 0, NL80211_CMD_SET_KEY, 0);
2381 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2382 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2383 if (alg == WPA_ALG_IGTK)
2384 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2386 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2388 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2392 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2393 "err=%d %s)", ret, strerror(-ret));
2401 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2402 int key_idx, int defkey,
2403 const u8 *seq, size_t seq_len,
2404 const u8 *key, size_t key_len)
2406 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2410 if (defkey && alg == WPA_ALG_IGTK)
2411 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2413 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2415 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2420 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2421 WLAN_CIPHER_SUITE_WEP40);
2423 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2424 WLAN_CIPHER_SUITE_WEP104);
2427 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2430 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2433 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2434 WLAN_CIPHER_SUITE_AES_CMAC);
2437 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2438 "algorithm %d", __func__, alg);
2443 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2445 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2447 nla_nest_end(msg, key_attr);
2455 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2459 struct nlattr *nl_keys, *nl_key;
2461 for (i = 0; i < 4; i++) {
2462 if (!params->wep_key[i])
2470 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2472 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2474 goto nla_put_failure;
2476 for (i = 0; i < 4; i++) {
2477 if (!params->wep_key[i])
2480 nl_key = nla_nest_start(msg, i);
2482 goto nla_put_failure;
2484 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2485 params->wep_key[i]);
2486 if (params->wep_key_len[i] == 5)
2487 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2488 WLAN_CIPHER_SUITE_WEP40);
2490 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2491 WLAN_CIPHER_SUITE_WEP104);
2493 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2495 if (i == params->wep_tx_keyidx)
2496 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2498 nla_nest_end(msg, nl_key);
2500 nla_nest_end(msg, nl_keys);
2509 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2510 const u8 *addr, int cmd, u16 reason_code,
2511 int local_state_change)
2516 msg = nlmsg_alloc();
2520 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2522 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2523 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2524 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2525 if (local_state_change)
2526 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2528 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2531 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2532 "(%s)", ret, strerror(-ret));
2533 goto nla_put_failure;
2543 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2544 const u8 *addr, int reason_code)
2546 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2547 __func__, MAC2STR(addr), reason_code);
2548 drv->associated = 0;
2549 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2554 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2557 struct i802_bss *bss = priv;
2558 struct wpa_driver_nl80211_data *drv = bss->drv;
2559 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2560 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2561 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2562 __func__, MAC2STR(addr), reason_code);
2563 drv->associated = 0;
2564 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2569 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2572 struct i802_bss *bss = priv;
2573 struct wpa_driver_nl80211_data *drv = bss->drv;
2574 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2575 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2576 wpa_printf(MSG_DEBUG, "%s", __func__);
2577 drv->associated = 0;
2578 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2583 static int wpa_driver_nl80211_authenticate(
2584 void *priv, struct wpa_driver_auth_params *params)
2586 struct i802_bss *bss = priv;
2587 struct wpa_driver_nl80211_data *drv = bss->drv;
2590 enum nl80211_auth_type type;
2593 drv->associated = 0;
2594 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2595 /* FIX: IBSS mode */
2596 if (drv->nlmode != NL80211_IFTYPE_STATION)
2597 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2599 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2603 msg = nlmsg_alloc();
2607 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2610 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2611 NL80211_CMD_AUTHENTICATE, 0);
2613 for (i = 0; i < 4; i++) {
2614 if (!params->wep_key[i])
2616 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2618 i == params->wep_tx_keyidx, NULL, 0,
2620 params->wep_key_len[i]);
2621 if (params->wep_tx_keyidx != i)
2623 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2624 params->wep_key[i], params->wep_key_len[i])) {
2630 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2631 if (params->bssid) {
2632 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2633 MAC2STR(params->bssid));
2634 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2637 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2638 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2641 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2642 params->ssid, params->ssid_len);
2643 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2646 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2648 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2649 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2650 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2651 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2652 type = NL80211_AUTHTYPE_SHARED_KEY;
2653 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2654 type = NL80211_AUTHTYPE_NETWORK_EAP;
2655 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2656 type = NL80211_AUTHTYPE_FT;
2658 goto nla_put_failure;
2659 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2660 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2661 if (params->local_state_change) {
2662 wpa_printf(MSG_DEBUG, " * Local state change only");
2663 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2666 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2669 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2670 "(%s)", ret, strerror(-ret));
2672 if (ret == -EALREADY && count == 1 && params->bssid &&
2673 !params->local_state_change) {
2675 * mac80211 does not currently accept new
2676 * authentication if we are already authenticated. As a
2677 * workaround, force deauthentication and try again.
2679 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2680 "after forced deauthentication");
2681 wpa_driver_nl80211_deauthenticate(
2683 WLAN_REASON_PREV_AUTH_NOT_VALID);
2687 goto nla_put_failure;
2690 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2699 struct phy_info_arg {
2701 struct hostapd_hw_modes *modes;
2704 static int phy_info_handler(struct nl_msg *msg, void *arg)
2706 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2707 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2708 struct phy_info_arg *phy_info = arg;
2710 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2712 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2713 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2714 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2715 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2716 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2717 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2718 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2719 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2722 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2723 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2724 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2725 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2728 struct nlattr *nl_band;
2729 struct nlattr *nl_freq;
2730 struct nlattr *nl_rate;
2731 int rem_band, rem_freq, rem_rate;
2732 struct hostapd_hw_modes *mode;
2733 int idx, mode_is_set;
2735 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2736 genlmsg_attrlen(gnlh, 0), NULL);
2738 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2741 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2742 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2745 phy_info->modes = mode;
2749 mode = &phy_info->modes[*(phy_info->num_modes)];
2750 memset(mode, 0, sizeof(*mode));
2751 *(phy_info->num_modes) += 1;
2753 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2754 nla_len(nl_band), NULL);
2756 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2757 mode->ht_capab = nla_get_u16(
2758 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2761 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2762 mode->a_mpdu_params |= nla_get_u8(
2763 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2767 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2768 mode->a_mpdu_params |= nla_get_u8(
2769 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2773 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2774 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2776 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2777 os_memcpy(mode->mcs_set, mcs, 16);
2780 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2781 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2782 nla_len(nl_freq), freq_policy);
2783 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2785 mode->num_channels++;
2788 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2789 if (!mode->channels)
2794 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2795 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2796 nla_len(nl_freq), freq_policy);
2797 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2800 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2801 mode->channels[idx].flag = 0;
2804 /* crude heuristic */
2805 if (mode->channels[idx].freq < 4000)
2806 mode->mode = HOSTAPD_MODE_IEEE80211B;
2808 mode->mode = HOSTAPD_MODE_IEEE80211A;
2812 /* crude heuristic */
2813 if (mode->channels[idx].freq < 4000)
2814 if (mode->channels[idx].freq == 2484)
2815 mode->channels[idx].chan = 14;
2817 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2819 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2821 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2822 mode->channels[idx].flag |=
2823 HOSTAPD_CHAN_DISABLED;
2824 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2825 mode->channels[idx].flag |=
2826 HOSTAPD_CHAN_PASSIVE_SCAN;
2827 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2828 mode->channels[idx].flag |=
2829 HOSTAPD_CHAN_NO_IBSS;
2830 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2831 mode->channels[idx].flag |=
2834 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2835 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2836 mode->channels[idx].max_tx_power =
2837 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2842 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2843 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2844 nla_len(nl_rate), rate_policy);
2845 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2850 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2856 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2857 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2858 nla_len(nl_rate), rate_policy);
2859 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2861 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2863 /* crude heuristic */
2864 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2865 mode->rates[idx] > 200)
2866 mode->mode = HOSTAPD_MODE_IEEE80211G;
2875 static struct hostapd_hw_modes *
2876 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2879 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2880 int i, mode11g_idx = -1;
2882 /* If only 802.11g mode is included, use it to construct matching
2883 * 802.11b mode data. */
2885 for (m = 0; m < *num_modes; m++) {
2886 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2887 return modes; /* 802.11b already included */
2888 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2892 if (mode11g_idx < 0)
2893 return modes; /* 2.4 GHz band not supported at all */
2895 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2897 return modes; /* Could not add 802.11b mode */
2899 mode = &nmodes[*num_modes];
2900 os_memset(mode, 0, sizeof(*mode));
2904 mode->mode = HOSTAPD_MODE_IEEE80211B;
2906 mode11g = &modes[mode11g_idx];
2907 mode->num_channels = mode11g->num_channels;
2908 mode->channels = os_malloc(mode11g->num_channels *
2909 sizeof(struct hostapd_channel_data));
2910 if (mode->channels == NULL) {
2912 return modes; /* Could not add 802.11b mode */
2914 os_memcpy(mode->channels, mode11g->channels,
2915 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2917 mode->num_rates = 0;
2918 mode->rates = os_malloc(4 * sizeof(int));
2919 if (mode->rates == NULL) {
2920 os_free(mode->channels);
2922 return modes; /* Could not add 802.11b mode */
2925 for (i = 0; i < mode11g->num_rates; i++) {
2926 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2927 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2929 mode->rates[mode->num_rates] = mode11g->rates[i];
2931 if (mode->num_rates == 4)
2935 if (mode->num_rates == 0) {
2936 os_free(mode->channels);
2937 os_free(mode->rates);
2939 return modes; /* No 802.11b rates */
2942 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2949 static struct hostapd_hw_modes *
2950 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2952 struct i802_bss *bss = priv;
2953 struct wpa_driver_nl80211_data *drv = bss->drv;
2955 struct phy_info_arg result = {
2956 .num_modes = num_modes,
2963 msg = nlmsg_alloc();
2967 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2968 0, NL80211_CMD_GET_WIPHY, 0);
2970 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2972 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2973 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2979 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2980 const void *data, size_t len,
2984 0x00, 0x00, /* radiotap version */
2985 0x0e, 0x00, /* radiotap length */
2986 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2987 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2989 0x00, 0x00, /* RX and TX flags to indicate that */
2990 0x00, 0x00, /* this is the injected frame directly */
2992 struct iovec iov[2] = {
2994 .iov_base = &rtap_hdr,
2995 .iov_len = sizeof(rtap_hdr),
2998 .iov_base = (void *) data,
3002 struct msghdr msg = {
3007 .msg_control = NULL,
3008 .msg_controllen = 0,
3013 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3015 return sendmsg(drv->monitor_sock, &msg, 0);
3019 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3022 struct i802_bss *bss = priv;
3023 struct wpa_driver_nl80211_data *drv = bss->drv;
3024 struct ieee80211_mgmt *mgmt;
3028 mgmt = (struct ieee80211_mgmt *) data;
3029 fc = le_to_host16(mgmt->frame_control);
3031 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3032 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3034 * Only one of the authentication frame types is encrypted.
3035 * In order for static WEP encryption to work properly (i.e.,
3036 * to not encrypt the frame), we need to tell mac80211 about
3037 * the frames that must not be encrypted.
3039 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3040 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3041 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3045 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3049 static int wpa_driver_nl80211_set_beacon(void *priv,
3050 const u8 *head, size_t head_len,
3051 const u8 *tail, size_t tail_len,
3052 int dtim_period, int beacon_int)
3054 struct i802_bss *bss = priv;
3055 struct wpa_driver_nl80211_data *drv = bss->drv;
3057 u8 cmd = NL80211_CMD_NEW_BEACON;
3060 int ifindex = if_nametoindex(bss->ifname);
3062 beacon_set = bss->beacon_set;
3064 msg = nlmsg_alloc();
3068 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3071 cmd = NL80211_CMD_SET_BEACON;
3073 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3075 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3076 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3077 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3078 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3079 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3081 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3083 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3084 ret, strerror(-ret));
3086 bss->beacon_set = 1;
3094 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3095 int freq, int ht_enabled,
3096 int sec_channel_offset)
3101 msg = nlmsg_alloc();
3105 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3106 NL80211_CMD_SET_WIPHY, 0);
3108 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3109 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3111 switch (sec_channel_offset) {
3113 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3114 NL80211_CHAN_HT40MINUS);
3117 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3118 NL80211_CHAN_HT40PLUS);
3121 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3127 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3130 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3131 "%d (%s)", freq, ret, strerror(-ret));
3137 static int wpa_driver_nl80211_sta_add(void *priv,
3138 struct hostapd_sta_add_params *params)
3140 struct i802_bss *bss = priv;
3141 struct wpa_driver_nl80211_data *drv = bss->drv;
3145 msg = nlmsg_alloc();
3149 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3150 0, NL80211_CMD_NEW_STATION, 0);
3152 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3153 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3154 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3155 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3156 params->supp_rates);
3157 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3158 params->listen_interval);
3159 if (params->ht_capabilities) {
3160 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3161 sizeof(*params->ht_capabilities),
3162 params->ht_capabilities);
3165 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3167 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3168 "result: %d (%s)", ret, strerror(-ret));
3176 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3178 struct i802_bss *bss = priv;
3179 struct wpa_driver_nl80211_data *drv = bss->drv;
3183 msg = nlmsg_alloc();
3187 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3188 0, NL80211_CMD_DEL_STATION, 0);
3190 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3191 if_nametoindex(bss->ifname));
3192 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3194 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3203 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3208 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3211 /* stop listening for EAPOL on this interface */
3212 del_ifidx(drv, ifidx);
3213 #endif /* HOSTAPD */
3215 msg = nlmsg_alloc();
3217 goto nla_put_failure;
3219 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3220 0, NL80211_CMD_DEL_INTERFACE, 0);
3221 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3223 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3226 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3230 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3232 enum nl80211_iftype iftype,
3233 const u8 *addr, int wds)
3235 struct nl_msg *msg, *flags = NULL;
3239 msg = nlmsg_alloc();
3243 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3244 0, NL80211_CMD_NEW_INTERFACE, 0);
3245 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3246 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3247 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3249 if (iftype == NL80211_IFTYPE_MONITOR) {
3252 flags = nlmsg_alloc();
3254 goto nla_put_failure;
3256 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3258 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3263 goto nla_put_failure;
3265 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3268 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3271 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3272 ifname, ret, strerror(-ret));
3276 ifidx = if_nametoindex(ifname);
3277 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3284 /* start listening for EAPOL on this interface */
3285 add_ifidx(drv, ifidx);
3286 #endif /* HOSTAPD */
3288 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3289 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3290 nl80211_remove_iface(drv, ifidx);
3298 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3299 const char *ifname, enum nl80211_iftype iftype,
3300 const u8 *addr, int wds)
3304 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3306 /* if error occured and interface exists already */
3307 if (ret == -ENFILE && if_nametoindex(ifname)) {
3308 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3310 /* Try to remove the interface that was already there. */
3311 nl80211_remove_iface(drv, if_nametoindex(ifname));
3313 /* Try to create the interface again */
3314 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3318 if (ret >= 0 && drv->disable_11b_rates)
3319 nl80211_disable_11b_rates(drv, ret, 1);
3325 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3327 struct ieee80211_hdr *hdr;
3329 union wpa_event_data event;
3331 hdr = (struct ieee80211_hdr *) buf;
3332 fc = le_to_host16(hdr->frame_control);
3334 os_memset(&event, 0, sizeof(event));
3335 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3336 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3337 event.tx_status.dst = hdr->addr1;
3338 event.tx_status.data = buf;
3339 event.tx_status.data_len = len;
3340 event.tx_status.ack = ok;
3341 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3345 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3346 u8 *buf, size_t len)
3348 union wpa_event_data event;
3349 os_memset(&event, 0, sizeof(event));
3350 event.rx_from_unknown.frame = buf;
3351 event.rx_from_unknown.len = len;
3352 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3356 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3357 u8 *buf, size_t len, int datarate, int ssi_signal)
3359 struct ieee80211_hdr *hdr;
3361 union wpa_event_data event;
3363 hdr = (struct ieee80211_hdr *) buf;
3364 fc = le_to_host16(hdr->frame_control);
3366 switch (WLAN_FC_GET_TYPE(fc)) {
3367 case WLAN_FC_TYPE_MGMT:
3368 os_memset(&event, 0, sizeof(event));
3369 event.rx_mgmt.frame = buf;
3370 event.rx_mgmt.frame_len = len;
3371 event.rx_mgmt.datarate = datarate;
3372 event.rx_mgmt.ssi_signal = ssi_signal;
3373 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3375 case WLAN_FC_TYPE_CTRL:
3376 /* can only get here with PS-Poll frames */
3377 wpa_printf(MSG_DEBUG, "CTRL");
3378 from_unknown_sta(drv, buf, len);
3380 case WLAN_FC_TYPE_DATA:
3381 from_unknown_sta(drv, buf, len);
3387 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3389 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3391 unsigned char buf[3000];
3392 struct ieee80211_radiotap_iterator iter;
3394 int datarate = 0, ssi_signal = 0;
3395 int injected = 0, failed = 0, rxflags = 0;
3397 len = recv(sock, buf, sizeof(buf), 0);
3403 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3404 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3405 "frame since Probe Request reporting is disabled");
3409 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3410 printf("received invalid radiotap frame\n");
3415 ret = ieee80211_radiotap_iterator_next(&iter);
3419 printf("received invalid radiotap frame (%d)\n", ret);
3422 switch (iter.this_arg_index) {
3423 case IEEE80211_RADIOTAP_FLAGS:
3424 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3427 case IEEE80211_RADIOTAP_RX_FLAGS:
3430 case IEEE80211_RADIOTAP_TX_FLAGS:
3432 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3433 IEEE80211_RADIOTAP_F_TX_FAIL;
3435 case IEEE80211_RADIOTAP_DATA_RETRIES:
3437 case IEEE80211_RADIOTAP_CHANNEL:
3438 /* TODO: convert from freq/flags to channel number */
3440 case IEEE80211_RADIOTAP_RATE:
3441 datarate = *iter.this_arg * 5;
3443 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3444 ssi_signal = *iter.this_arg;
3449 if (rxflags && injected)
3453 handle_frame(drv, buf + iter.max_length,
3454 len - iter.max_length, datarate, ssi_signal);
3456 handle_tx_callback(drv->ctx, buf + iter.max_length,
3457 len - iter.max_length, !failed);
3462 * we post-process the filter code later and rewrite
3463 * this to the offset to the last instruction
3468 static struct sock_filter msock_filter_insns[] = {
3470 * do a little-endian load of the radiotap length field
3472 /* load lower byte into A */
3473 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3474 /* put it into X (== index register) */
3475 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3476 /* load upper byte into A */
3477 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3478 /* left-shift it by 8 */
3479 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3481 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3482 /* put result into X */
3483 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3486 * Allow management frames through, this also gives us those
3487 * management frames that we sent ourselves with status
3489 /* load the lower byte of the IEEE 802.11 frame control field */
3490 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3491 /* mask off frame type and version */
3492 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3493 /* accept frame if it's both 0, fall through otherwise */
3494 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3497 * TODO: add a bit to radiotap RX flags that indicates
3498 * that the sending station is not associated, then
3499 * add a filter here that filters on our DA and that flag
3500 * to allow us to deauth frames to that bad station.
3502 * Not a regression -- we didn't do it before either.
3507 * drop non-data frames
3509 /* load the lower byte of the frame control field */
3510 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3511 /* mask off QoS bit */
3512 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3513 /* drop non-data frames */
3514 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3516 /* load the upper byte of the frame control field */
3517 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3518 /* mask off toDS/fromDS */
3519 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3520 /* accept WDS frames */
3521 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3524 * add header length to index
3526 /* load the lower byte of the frame control field */
3527 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3528 /* mask off QoS bit */
3529 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3530 /* right shift it by 6 to give 0 or 2 */
3531 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3532 /* add data frame header length */
3533 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3534 /* add index, was start of 802.11 header */
3535 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3536 /* move to index, now start of LL header */
3537 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3540 * Accept empty data frames, we use those for
3543 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3544 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3547 * Accept EAPOL frames
3549 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3550 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3551 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3552 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3554 /* keep these last two statements or change the code below */
3555 /* return 0 == "DROP" */
3556 BPF_STMT(BPF_RET | BPF_K, 0),
3557 /* return ~0 == "keep all" */
3558 BPF_STMT(BPF_RET | BPF_K, ~0),
3561 static struct sock_fprog msock_filter = {
3562 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3563 .filter = msock_filter_insns,
3567 static int add_monitor_filter(int s)
3571 /* rewrite all PASS/FAIL jump offsets */
3572 for (idx = 0; idx < msock_filter.len; idx++) {
3573 struct sock_filter *insn = &msock_filter_insns[idx];
3575 if (BPF_CLASS(insn->code) == BPF_JMP) {
3576 if (insn->code == (BPF_JMP|BPF_JA)) {
3577 if (insn->k == PASS)
3578 insn->k = msock_filter.len - idx - 2;
3579 else if (insn->k == FAIL)
3580 insn->k = msock_filter.len - idx - 3;
3583 if (insn->jt == PASS)
3584 insn->jt = msock_filter.len - idx - 2;
3585 else if (insn->jt == FAIL)
3586 insn->jt = msock_filter.len - idx - 3;
3588 if (insn->jf == PASS)
3589 insn->jf = msock_filter.len - idx - 2;
3590 else if (insn->jf == FAIL)
3591 insn->jf = msock_filter.len - idx - 3;
3595 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3596 &msock_filter, sizeof(msock_filter))) {
3597 perror("SO_ATTACH_FILTER");
3605 static void nl80211_remove_monitor_interface(
3606 struct wpa_driver_nl80211_data *drv)
3608 if (drv->monitor_ifidx >= 0) {
3609 nl80211_remove_iface(drv, drv->monitor_ifidx);
3610 drv->monitor_ifidx = -1;
3612 if (drv->monitor_sock >= 0) {
3613 eloop_unregister_read_sock(drv->monitor_sock);
3614 close(drv->monitor_sock);
3615 drv->monitor_sock = -1;
3621 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3624 struct sockaddr_ll ll;
3628 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3629 buf[IFNAMSIZ - 1] = '\0';
3631 drv->monitor_ifidx =
3632 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3635 if (drv->monitor_ifidx < 0)
3638 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3641 memset(&ll, 0, sizeof(ll));
3642 ll.sll_family = AF_PACKET;
3643 ll.sll_ifindex = drv->monitor_ifidx;
3644 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3645 if (drv->monitor_sock < 0) {
3646 perror("socket[PF_PACKET,SOCK_RAW]");
3650 if (add_monitor_filter(drv->monitor_sock)) {
3651 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3652 "interface; do filtering in user space");
3653 /* This works, but will cost in performance. */
3656 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3657 perror("monitor socket bind");
3661 optlen = sizeof(optval);
3664 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3665 perror("Failed to set socket priority");
3669 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3671 printf("Could not register monitor read socket\n");
3677 nl80211_remove_monitor_interface(drv);
3682 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3684 static int wpa_driver_nl80211_hapd_send_eapol(
3685 void *priv, const u8 *addr, const u8 *data,
3686 size_t data_len, int encrypt, const u8 *own_addr)
3688 struct i802_bss *bss = priv;
3689 struct wpa_driver_nl80211_data *drv = bss->drv;
3690 struct ieee80211_hdr *hdr;
3695 int qos = sta->flags & WPA_STA_WMM;
3700 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3702 hdr = os_zalloc(len);
3704 printf("malloc() failed for i802_send_data(len=%lu)\n",
3705 (unsigned long) len);
3709 hdr->frame_control =
3710 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3711 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3713 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3714 #if 0 /* To be enabled if qos determination is added above */
3716 hdr->frame_control |=
3717 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3721 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3722 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3723 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3724 pos = (u8 *) (hdr + 1);
3726 #if 0 /* To be enabled if qos determination is added above */
3728 /* add an empty QoS header if needed */
3735 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3736 pos += sizeof(rfc1042_header);
3737 WPA_PUT_BE16(pos, ETH_P_PAE);
3739 memcpy(pos, data, data_len);
3741 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3743 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3745 (unsigned long) len, errno, strerror(errno));
3753 static u32 sta_flags_nl80211(int flags)
3757 if (flags & WPA_STA_AUTHORIZED)
3758 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3759 if (flags & WPA_STA_WMM)
3760 f |= BIT(NL80211_STA_FLAG_WME);
3761 if (flags & WPA_STA_SHORT_PREAMBLE)
3762 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3763 if (flags & WPA_STA_MFP)
3764 f |= BIT(NL80211_STA_FLAG_MFP);
3770 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3772 int flags_or, int flags_and)
3774 struct i802_bss *bss = priv;
3775 struct wpa_driver_nl80211_data *drv = bss->drv;
3776 struct nl_msg *msg, *flags = NULL;
3777 struct nl80211_sta_flag_update upd;
3779 msg = nlmsg_alloc();
3783 flags = nlmsg_alloc();
3789 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3790 0, NL80211_CMD_SET_STATION, 0);
3792 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3793 if_nametoindex(bss->ifname));
3794 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3797 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3798 * can be removed eventually.
3800 if (total_flags & WPA_STA_AUTHORIZED)
3801 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3803 if (total_flags & WPA_STA_WMM)
3804 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3806 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3807 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3809 if (total_flags & WPA_STA_MFP)
3810 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3812 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3813 goto nla_put_failure;
3815 os_memset(&upd, 0, sizeof(upd));
3816 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3817 upd.set = sta_flags_nl80211(flags_or);
3818 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3822 return send_and_recv_msgs(drv, msg, NULL, NULL);
3829 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3830 struct wpa_driver_associate_params *params)
3833 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3835 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3836 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3837 nl80211_remove_monitor_interface(drv);
3841 /* TODO: setup monitor interface (and add code somewhere to remove this
3842 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3848 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3853 msg = nlmsg_alloc();
3857 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3858 NL80211_CMD_LEAVE_IBSS, 0);
3859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3860 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3863 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3864 "(%s)", ret, strerror(-ret));
3865 goto nla_put_failure;
3869 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3877 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3878 struct wpa_driver_associate_params *params)
3884 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3886 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3887 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3893 msg = nlmsg_alloc();
3897 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3898 NL80211_CMD_JOIN_IBSS, 0);
3899 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3901 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3902 goto nla_put_failure;
3904 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3905 params->ssid, params->ssid_len);
3906 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3908 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3909 drv->ssid_len = params->ssid_len;
3911 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3912 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3914 ret = nl80211_set_conn_keys(params, msg);
3916 goto nla_put_failure;
3918 if (params->wpa_ie) {
3919 wpa_hexdump(MSG_DEBUG,
3920 " * Extra IEs for Beacon/Probe Response frames",
3921 params->wpa_ie, params->wpa_ie_len);
3922 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3926 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3929 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3930 ret, strerror(-ret));
3932 if (ret == -EALREADY && count == 1) {
3933 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3935 nl80211_leave_ibss(drv);
3940 goto nla_put_failure;
3943 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3951 static int wpa_driver_nl80211_connect(
3952 struct wpa_driver_nl80211_data *drv,
3953 struct wpa_driver_associate_params *params)
3956 enum nl80211_auth_type type;
3959 msg = nlmsg_alloc();
3963 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3964 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3965 NL80211_CMD_CONNECT, 0);
3967 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3968 if (params->bssid) {
3969 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3970 MAC2STR(params->bssid));
3971 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3974 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3975 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3978 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3979 params->ssid, params->ssid_len);
3980 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3982 if (params->ssid_len > sizeof(drv->ssid))
3983 goto nla_put_failure;
3984 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3985 drv->ssid_len = params->ssid_len;
3987 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3989 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3992 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3993 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3994 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3995 type = NL80211_AUTHTYPE_SHARED_KEY;
3996 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3997 type = NL80211_AUTHTYPE_NETWORK_EAP;
3998 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3999 type = NL80211_AUTHTYPE_FT;
4001 goto nla_put_failure;
4003 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4004 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4006 if (params->wpa_ie && params->wpa_ie_len) {
4007 enum nl80211_wpa_versions ver;
4009 if (params->wpa_ie[0] == WLAN_EID_RSN)
4010 ver = NL80211_WPA_VERSION_2;
4012 ver = NL80211_WPA_VERSION_1;
4014 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4015 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4018 if (params->pairwise_suite != CIPHER_NONE) {
4021 switch (params->pairwise_suite) {
4023 cipher = WLAN_CIPHER_SUITE_WEP40;
4026 cipher = WLAN_CIPHER_SUITE_WEP104;
4029 cipher = WLAN_CIPHER_SUITE_CCMP;
4033 cipher = WLAN_CIPHER_SUITE_TKIP;
4036 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4039 if (params->group_suite != CIPHER_NONE) {
4042 switch (params->group_suite) {
4044 cipher = WLAN_CIPHER_SUITE_WEP40;
4047 cipher = WLAN_CIPHER_SUITE_WEP104;
4050 cipher = WLAN_CIPHER_SUITE_CCMP;
4054 cipher = WLAN_CIPHER_SUITE_TKIP;
4057 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4060 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4061 params->key_mgmt_suite == KEY_MGMT_PSK) {
4062 int mgmt = WLAN_AKM_SUITE_PSK;
4064 switch (params->key_mgmt_suite) {
4065 case KEY_MGMT_802_1X:
4066 mgmt = WLAN_AKM_SUITE_8021X;
4070 mgmt = WLAN_AKM_SUITE_PSK;
4073 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4076 ret = nl80211_set_conn_keys(params, msg);
4078 goto nla_put_failure;
4080 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4083 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4084 "(%s)", ret, strerror(-ret));
4085 goto nla_put_failure;
4088 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4097 static int wpa_driver_nl80211_associate(
4098 void *priv, struct wpa_driver_associate_params *params)
4100 struct i802_bss *bss = priv;
4101 struct wpa_driver_nl80211_data *drv = bss->drv;
4105 if (params->mode == IEEE80211_MODE_AP)
4106 return wpa_driver_nl80211_ap(drv, params);
4108 if (params->mode == IEEE80211_MODE_IBSS)
4109 return wpa_driver_nl80211_ibss(drv, params);
4111 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4112 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4114 return wpa_driver_nl80211_connect(drv, params);
4117 drv->associated = 0;
4119 msg = nlmsg_alloc();
4123 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4125 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4126 NL80211_CMD_ASSOCIATE, 0);
4128 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4129 if (params->bssid) {
4130 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4131 MAC2STR(params->bssid));
4132 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4135 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4136 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4137 drv->assoc_freq = params->freq;
4139 drv->assoc_freq = 0;
4141 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4142 params->ssid, params->ssid_len);
4143 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4145 if (params->ssid_len > sizeof(drv->ssid))
4146 goto nla_put_failure;
4147 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4148 drv->ssid_len = params->ssid_len;
4150 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4152 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4155 #ifdef CONFIG_IEEE80211W
4156 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4157 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4158 #endif /* CONFIG_IEEE80211W */
4160 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4162 if (params->prev_bssid) {
4163 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4164 MAC2STR(params->prev_bssid));
4165 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4166 params->prev_bssid);
4170 wpa_printf(MSG_DEBUG, " * P2P group");
4172 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4175 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4176 "(%s)", ret, strerror(-ret));
4177 nl80211_dump_scan(drv);
4178 goto nla_put_failure;
4181 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4190 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4191 int ifindex, int mode)
4196 msg = nlmsg_alloc();
4200 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4201 0, NL80211_CMD_SET_INTERFACE, 0);
4202 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4203 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4205 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4209 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4210 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4215 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4217 struct i802_bss *bss = priv;
4218 struct wpa_driver_nl80211_data *drv = bss->drv;
4225 nlmode = NL80211_IFTYPE_STATION;
4228 nlmode = NL80211_IFTYPE_ADHOC;
4231 nlmode = NL80211_IFTYPE_AP;
4237 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4238 drv->nlmode = nlmode;
4243 if (nlmode == drv->nlmode) {
4244 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4245 "requested mode - ignore error");
4247 goto done; /* Already in the requested mode */
4250 /* mac80211 doesn't allow mode changes while the device is up, so
4251 * take the device down, try to set the mode again, and bring the
4254 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4256 for (i = 0; i < 10; i++) {
4257 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4259 /* Try to set the mode again while the interface is
4261 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4262 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4268 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4270 os_sleep(0, 100000);
4274 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4275 "interface is down");
4276 drv->nlmode = nlmode;
4280 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4281 /* Setup additional AP mode functionality if needed */
4282 if (drv->monitor_ifidx < 0 &&
4283 nl80211_create_monitor_interface(drv))
4285 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4286 /* Remove additional AP mode functionality */
4287 nl80211_remove_monitor_interface(drv);
4288 bss->beacon_set = 0;
4292 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4293 "from %d failed", nlmode, drv->nlmode);
4299 static int wpa_driver_nl80211_get_capa(void *priv,
4300 struct wpa_driver_capa *capa)
4302 struct i802_bss *bss = priv;
4303 struct wpa_driver_nl80211_data *drv = bss->drv;
4304 if (!drv->has_capability)
4306 os_memcpy(capa, &drv->capa, sizeof(*capa));
4311 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4313 struct i802_bss *bss = priv;
4314 struct wpa_driver_nl80211_data *drv = bss->drv;
4316 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4317 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4318 drv->operstate = state;
4319 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4320 state ? IF_OPER_UP : IF_OPER_DORMANT);
4324 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4326 struct i802_bss *bss = priv;
4327 struct wpa_driver_nl80211_data *drv = bss->drv;
4329 struct nl80211_sta_flag_update upd;
4331 msg = nlmsg_alloc();
4335 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4336 0, NL80211_CMD_SET_STATION, 0);
4338 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4339 if_nametoindex(bss->ifname));
4340 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4342 os_memset(&upd, 0, sizeof(upd));
4343 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4345 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4346 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4348 return send_and_recv_msgs(drv, msg, NULL, NULL);
4356 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4361 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4363 for (i = 0; i < drv->num_if_indices; i++) {
4364 if (drv->if_indices[i] == 0) {
4365 drv->if_indices[i] = ifidx;
4370 if (drv->if_indices != drv->default_if_indices)
4371 old = drv->if_indices;
4375 drv->if_indices = os_realloc(old,
4376 sizeof(int) * (drv->num_if_indices + 1));
4377 if (!drv->if_indices) {
4379 drv->if_indices = drv->default_if_indices;
4381 drv->if_indices = old;
4382 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4384 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4387 os_memcpy(drv->if_indices, drv->default_if_indices,
4388 sizeof(drv->default_if_indices));
4389 drv->if_indices[drv->num_if_indices] = ifidx;
4390 drv->num_if_indices++;
4394 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4398 for (i = 0; i < drv->num_if_indices; i++) {
4399 if (drv->if_indices[i] == ifidx) {
4400 drv->if_indices[i] = 0;
4407 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4411 for (i = 0; i < drv->num_if_indices; i++)
4412 if (drv->if_indices[i] == ifidx)
4419 static inline int min_int(int a, int b)
4427 static int get_key_handler(struct nl_msg *msg, void *arg)
4429 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4430 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4432 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4433 genlmsg_attrlen(gnlh, 0), NULL);
4436 * TODO: validate the key index and mac address!
4437 * Otherwise, there's a race condition as soon as
4438 * the kernel starts sending key notifications.
4441 if (tb[NL80211_ATTR_KEY_SEQ])
4442 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4443 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4448 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4451 struct i802_bss *bss = priv;
4452 struct wpa_driver_nl80211_data *drv = bss->drv;
4455 msg = nlmsg_alloc();
4459 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4460 0, NL80211_CMD_GET_KEY, 0);
4463 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4464 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4465 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4469 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4475 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4478 struct i802_bss *bss = priv;
4479 struct wpa_driver_nl80211_data *drv = bss->drv;
4481 u8 rates[NL80211_MAX_SUPP_RATES];
4485 msg = nlmsg_alloc();
4489 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4490 NL80211_CMD_SET_BSS, 0);
4492 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4493 rates[rates_len++] = basic_rates[i] / 5;
4495 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4499 return send_and_recv_msgs(drv, msg, NULL, NULL);
4504 #endif /* HOSTAPD */
4507 /* Set kernel driver on given frequency (MHz) */
4508 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4510 struct i802_bss *bss = priv;
4511 struct wpa_driver_nl80211_data *drv = bss->drv;
4512 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4513 freq->sec_channel_offset);
4519 static int i802_set_rts(void *priv, int rts)
4521 struct i802_bss *bss = priv;
4522 struct wpa_driver_nl80211_data *drv = bss->drv;
4527 msg = nlmsg_alloc();
4536 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4537 0, NL80211_CMD_SET_WIPHY, 0);
4538 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4539 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4541 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4545 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4546 "%d (%s)", rts, ret, strerror(-ret));
4551 static int i802_set_frag(void *priv, int frag)
4553 struct i802_bss *bss = priv;
4554 struct wpa_driver_nl80211_data *drv = bss->drv;
4559 msg = nlmsg_alloc();
4568 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4569 0, NL80211_CMD_SET_WIPHY, 0);
4570 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4571 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4573 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4577 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4578 "%d: %d (%s)", frag, ret, strerror(-ret));
4583 static int i802_flush(void *priv)
4585 struct i802_bss *bss = priv;
4586 struct wpa_driver_nl80211_data *drv = bss->drv;
4589 msg = nlmsg_alloc();
4593 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4594 0, NL80211_CMD_DEL_STATION, 0);
4597 * XXX: FIX! this needs to flush all VLANs too
4599 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4600 if_nametoindex(bss->ifname));
4602 return send_and_recv_msgs(drv, msg, NULL, NULL);
4608 static int get_sta_handler(struct nl_msg *msg, void *arg)
4610 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4611 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4612 struct hostap_sta_driver_data *data = arg;
4613 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4614 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4615 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4616 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4617 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4618 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4619 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4622 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4623 genlmsg_attrlen(gnlh, 0), NULL);
4626 * TODO: validate the interface and mac address!
4627 * Otherwise, there's a race condition as soon as
4628 * the kernel starts sending station notifications.
4631 if (!tb[NL80211_ATTR_STA_INFO]) {
4632 wpa_printf(MSG_DEBUG, "sta stats missing!");
4635 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4636 tb[NL80211_ATTR_STA_INFO],
4638 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4642 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4643 data->inactive_msec =
4644 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4645 if (stats[NL80211_STA_INFO_RX_BYTES])
4646 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4647 if (stats[NL80211_STA_INFO_TX_BYTES])
4648 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4649 if (stats[NL80211_STA_INFO_RX_PACKETS])
4651 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4652 if (stats[NL80211_STA_INFO_TX_PACKETS])
4654 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4659 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4662 struct i802_bss *bss = priv;
4663 struct wpa_driver_nl80211_data *drv = bss->drv;
4666 os_memset(data, 0, sizeof(*data));
4667 msg = nlmsg_alloc();
4671 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4672 0, NL80211_CMD_GET_STATION, 0);
4674 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4675 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4677 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4683 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4684 int cw_min, int cw_max, int burst_time)
4686 struct i802_bss *bss = priv;
4687 struct wpa_driver_nl80211_data *drv = bss->drv;
4689 struct nlattr *txq, *params;
4691 msg = nlmsg_alloc();
4695 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4696 0, NL80211_CMD_SET_WIPHY, 0);
4698 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4700 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4702 goto nla_put_failure;
4704 /* We are only sending parameters for a single TXQ at a time */
4705 params = nla_nest_start(msg, 1);
4707 goto nla_put_failure;
4709 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4710 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4711 * 32 usec, so need to convert the value here. */
4712 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4713 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4714 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4715 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4717 nla_nest_end(msg, params);
4719 nla_nest_end(msg, txq);
4721 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4728 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4730 struct i802_bss *bss = priv;
4731 struct wpa_driver_nl80211_data *drv = bss->drv;
4734 msg = nlmsg_alloc();
4738 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4739 NL80211_CMD_SET_BSS, 0);
4742 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4744 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4746 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4748 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4750 return send_and_recv_msgs(drv, msg, NULL, NULL);
4756 static int i802_set_cts_protect(void *priv, int value)
4758 return i802_set_bss(priv, value, -1, -1);
4762 static int i802_set_preamble(void *priv, int value)
4764 return i802_set_bss(priv, -1, value, -1);
4768 static int i802_set_short_slot_time(void *priv, int value)
4770 return i802_set_bss(priv, -1, -1, value);
4774 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4775 const char *ifname, int vlan_id)
4777 struct i802_bss *bss = priv;
4778 struct wpa_driver_nl80211_data *drv = bss->drv;
4782 msg = nlmsg_alloc();
4786 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4787 0, NL80211_CMD_SET_STATION, 0);
4789 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4790 if_nametoindex(bss->ifname));
4791 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4792 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4793 if_nametoindex(ifname));
4795 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4797 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4798 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4799 MAC2STR(addr), ifname, vlan_id, ret,
4807 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4809 struct i802_bss *bss = priv;
4810 struct wpa_driver_nl80211_data *drv = bss->drv;
4811 char name[IFNAMSIZ + 1];
4813 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4814 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4815 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4817 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4820 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4821 return i802_set_sta_vlan(priv, addr, name, 0);
4823 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4824 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4830 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4832 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4833 struct sockaddr_ll lladdr;
4834 unsigned char buf[3000];
4836 socklen_t fromlen = sizeof(lladdr);
4838 len = recvfrom(sock, buf, sizeof(buf), 0,
4839 (struct sockaddr *)&lladdr, &fromlen);
4845 if (have_ifidx(drv, lladdr.sll_ifindex))
4846 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4850 static int i802_get_inact_sec(void *priv, const u8 *addr)
4852 struct hostap_sta_driver_data data;
4855 data.inactive_msec = (unsigned long) -1;
4856 ret = i802_read_sta_data(priv, &data, addr);
4857 if (ret || data.inactive_msec == (unsigned long) -1)
4859 return data.inactive_msec / 1000;
4863 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4872 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4875 struct i802_bss *bss = priv;
4876 struct ieee80211_mgmt mgmt;
4878 memset(&mgmt, 0, sizeof(mgmt));
4879 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4880 WLAN_FC_STYPE_DEAUTH);
4881 memcpy(mgmt.da, addr, ETH_ALEN);
4882 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4883 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4884 mgmt.u.deauth.reason_code = host_to_le16(reason);
4885 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4887 sizeof(mgmt.u.deauth));
4891 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4894 struct i802_bss *bss = priv;
4895 struct ieee80211_mgmt mgmt;
4897 memset(&mgmt, 0, sizeof(mgmt));
4898 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4899 WLAN_FC_STYPE_DISASSOC);
4900 memcpy(mgmt.da, addr, ETH_ALEN);
4901 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4902 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4903 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4904 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4906 sizeof(mgmt.u.disassoc));
4910 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4911 const char *brname, const char *ifname)
4914 char in_br[IFNAMSIZ];
4916 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4917 ifindex = if_nametoindex(brname);
4920 * Bridge was configured, but the bridge device does
4921 * not exist. Try to add it now.
4923 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4924 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4925 "bridge interface %s: %s",
4926 brname, strerror(errno));
4929 drv->added_bridge = 1;
4930 add_ifidx(drv, if_nametoindex(brname));
4933 if (linux_br_get(in_br, ifname) == 0) {
4934 if (os_strcmp(in_br, brname) == 0)
4935 return 0; /* already in the bridge */
4937 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4938 "bridge %s", ifname, in_br);
4939 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4940 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4941 "remove interface %s from bridge "
4943 ifname, brname, strerror(errno));
4948 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4950 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4951 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4952 "into bridge %s: %s",
4953 ifname, brname, strerror(errno));
4956 drv->added_if_into_bridge = 1;
4962 static void *i802_init(struct hostapd_data *hapd,
4963 struct wpa_init_params *params)
4965 struct wpa_driver_nl80211_data *drv;
4966 struct i802_bss *bss;
4968 char brname[IFNAMSIZ];
4969 int ifindex, br_ifindex;
4972 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4977 if (linux_br_get(brname, params->ifname) == 0) {
4978 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4979 params->ifname, brname);
4980 br_ifindex = if_nametoindex(brname);
4986 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4987 drv->if_indices = drv->default_if_indices;
4988 for (i = 0; i < params->num_bridge; i++) {
4989 if (params->bridge[i]) {
4990 ifindex = if_nametoindex(params->bridge[i]);
4992 add_ifidx(drv, ifindex);
4993 if (ifindex == br_ifindex)
4997 if (!br_added && br_ifindex &&
4998 (params->num_bridge == 0 || !params->bridge[0]))
4999 add_ifidx(drv, br_ifindex);
5001 /* start listening for EAPOL on the default AP interface */
5002 add_ifidx(drv, drv->ifindex);
5004 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5007 if (params->bssid) {
5008 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5013 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5014 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5015 "into AP mode", bss->ifname);
5019 if (params->num_bridge && params->bridge[0] &&
5020 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5023 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5026 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5027 if (drv->eapol_sock < 0) {
5028 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5032 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5034 printf("Could not register read socket for eapol\n");
5038 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5044 nl80211_remove_monitor_interface(drv);
5045 if (drv->ioctl_sock >= 0)
5046 close(drv->ioctl_sock);
5048 genl_family_put(drv->nl80211);
5049 nl_cache_free(drv->nl_cache);
5050 nl80211_handle_destroy(drv->nl_handle);
5051 nl_cb_put(drv->nl_cb);
5058 static void i802_deinit(void *priv)
5060 wpa_driver_nl80211_deinit(priv);
5063 #endif /* HOSTAPD */
5066 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5067 enum wpa_driver_if_type type)
5070 case WPA_IF_STATION:
5071 case WPA_IF_P2P_CLIENT:
5072 case WPA_IF_P2P_GROUP:
5073 return NL80211_IFTYPE_STATION;
5074 case WPA_IF_AP_VLAN:
5075 return NL80211_IFTYPE_AP_VLAN;
5078 return NL80211_IFTYPE_AP;
5084 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5085 const char *ifname, const u8 *addr,
5086 void *bss_ctx, void **drv_priv,
5087 char *force_ifname, u8 *if_addr)
5089 struct i802_bss *bss = priv;
5090 struct wpa_driver_nl80211_data *drv = bss->drv;
5093 struct i802_bss *new_bss = NULL;
5095 if (type == WPA_IF_AP_BSS) {
5096 new_bss = os_zalloc(sizeof(*new_bss));
5097 if (new_bss == NULL)
5100 #endif /* HOSTAPD */
5103 os_memcpy(if_addr, addr, ETH_ALEN);
5104 ifidx = nl80211_create_iface(drv, ifname,
5105 wpa_driver_nl80211_if_type(type), addr,
5110 #endif /* HOSTAPD */
5115 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5119 if (type == WPA_IF_AP_BSS) {
5120 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5121 nl80211_remove_iface(drv, ifidx);
5125 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5126 new_bss->ifindex = ifidx;
5128 new_bss->next = drv->first_bss.next;
5129 drv->first_bss.next = new_bss;
5131 *drv_priv = new_bss;
5133 #endif /* HOSTAPD */
5139 static int wpa_driver_nl80211_if_remove(void *priv,
5140 enum wpa_driver_if_type type,
5143 struct i802_bss *bss = priv;
5144 struct wpa_driver_nl80211_data *drv = bss->drv;
5145 int ifindex = if_nametoindex(ifname);
5147 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5148 __func__, type, ifname, ifindex);
5151 nl80211_remove_iface(drv, ifindex);
5154 if (type != WPA_IF_AP_BSS)
5157 if (bss != &drv->first_bss) {
5158 struct i802_bss *tbss = &drv->first_bss;
5161 if (tbss->next != bss)
5164 tbss->next = bss->next;
5169 #endif /* HOSTAPD */
5175 static int cookie_handler(struct nl_msg *msg, void *arg)
5177 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5178 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5180 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5181 genlmsg_attrlen(gnlh, 0), NULL);
5182 if (tb[NL80211_ATTR_COOKIE])
5183 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5188 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5189 const u8 *dst, const u8 *src,
5191 const u8 *data, size_t data_len)
5193 struct i802_bss *bss = priv;
5194 struct wpa_driver_nl80211_data *drv = bss->drv;
5198 struct ieee80211_hdr *hdr;
5201 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5204 buf = os_zalloc(24 + data_len);
5207 os_memcpy(buf + 24, data, data_len);
5208 hdr = (struct ieee80211_hdr *) buf;
5209 hdr->frame_control =
5210 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5211 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5212 os_memcpy(hdr->addr2, src, ETH_ALEN);
5213 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5215 if (drv->nlmode == NL80211_IFTYPE_AP) {
5216 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5221 msg = nlmsg_alloc();
5227 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5228 NL80211_CMD_ACTION, 0);
5230 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5231 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5232 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
5237 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5240 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
5241 "(%s)", ret, strerror(-ret));
5242 goto nla_put_failure;
5244 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
5245 "cookie 0x%llx", (long long unsigned int) cookie);
5246 drv->send_action_cookie = cookie;
5256 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5257 unsigned int duration)
5259 struct i802_bss *bss = priv;
5260 struct wpa_driver_nl80211_data *drv = bss->drv;
5265 msg = nlmsg_alloc();
5269 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5270 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5272 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5273 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5274 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5277 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5279 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5280 "0x%llx for freq=%u MHz duration=%u",
5281 (long long unsigned int) cookie, freq, duration);
5282 drv->remain_on_chan_cookie = cookie;
5285 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5286 "(freq=%d duration=%u): %d (%s)",
5287 freq, duration, ret, strerror(-ret));
5293 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5295 struct i802_bss *bss = priv;
5296 struct wpa_driver_nl80211_data *drv = bss->drv;
5300 if (!drv->pending_remain_on_chan) {
5301 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5306 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5308 (long long unsigned int) drv->remain_on_chan_cookie);
5310 msg = nlmsg_alloc();
5314 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5315 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5317 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5318 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5320 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5323 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5324 "%d (%s)", ret, strerror(-ret));
5330 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5333 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5334 if (drv->monitor_ifidx < 0)
5335 return; /* monitor interface already removed */
5337 if (drv->nlmode != NL80211_IFTYPE_STATION)
5338 return; /* not in station mode anymore */
5340 if (drv->probe_req_report)
5341 return; /* reporting enabled */
5343 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5344 "Probe Request reporting needed anymore");
5345 nl80211_remove_monitor_interface(drv);
5349 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5351 struct i802_bss *bss = priv;
5352 struct wpa_driver_nl80211_data *drv = bss->drv;
5354 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5355 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5356 "allowed in station mode (iftype=%d)",
5360 drv->probe_req_report = report;
5363 eloop_cancel_timeout(
5364 wpa_driver_nl80211_probe_req_report_timeout,
5366 if (drv->monitor_ifidx < 0 &&
5367 nl80211_create_monitor_interface(drv))
5371 * It takes a while to remove the monitor interface, so try to
5372 * avoid doing this if it is needed again shortly. Instead,
5373 * schedule the interface to be removed later if no need for it
5376 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5377 "to be removed after 10 seconds of no use");
5378 eloop_register_timeout(
5379 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5387 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5388 int ifindex, int disabled)
5391 struct nlattr *bands, *band;
5394 msg = nlmsg_alloc();
5398 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5399 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5400 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5402 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5404 goto nla_put_failure;
5407 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5408 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5409 * rates. All 5 GHz rates are left enabled.
5411 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5413 goto nla_put_failure;
5414 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5415 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5416 nla_nest_end(msg, band);
5418 nla_nest_end(msg, bands);
5420 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5423 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5424 "(%s)", ret, strerror(-ret));
5435 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5437 struct i802_bss *bss = priv;
5438 struct wpa_driver_nl80211_data *drv = bss->drv;
5439 drv->disable_11b_rates = disabled;
5440 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5444 static int wpa_driver_nl80211_deinit_ap(void *priv)
5446 struct i802_bss *bss = priv;
5447 struct wpa_driver_nl80211_data *drv = bss->drv;
5448 if (drv->nlmode != NL80211_IFTYPE_AP)
5450 wpa_driver_nl80211_del_beacon(drv);
5451 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5455 static void wpa_driver_nl80211_resume(void *priv)
5457 struct i802_bss *bss = priv;
5458 struct wpa_driver_nl80211_data *drv = bss->drv;
5459 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5460 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5466 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5467 const u8 *ies, size_t ies_len)
5469 struct i802_bss *bss = priv;
5470 struct wpa_driver_nl80211_data *drv = bss->drv;
5474 u8 own_addr[ETH_ALEN];
5476 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5480 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5481 "action %d", action);
5486 * Action frame payload:
5487 * Category[1] = 6 (Fast BSS Transition)
5488 * Action[1] = 1 (Fast BSS Transition Request)
5494 data_len = 2 + 2 * ETH_ALEN + ies_len;
5495 data = os_malloc(data_len);
5499 *pos++ = 0x06; /* FT Action category */
5501 os_memcpy(pos, own_addr, ETH_ALEN);
5503 os_memcpy(pos, target_ap, ETH_ALEN);
5505 os_memcpy(pos, ies, ies_len);
5507 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5508 own_addr, drv->bssid,
5516 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5518 struct i802_bss *bss = priv;
5519 struct wpa_driver_nl80211_data *drv = bss->drv;
5520 struct nl_msg *msg, *cqm = NULL;
5522 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5523 "hysteresis=%d", threshold, hysteresis);
5525 msg = nlmsg_alloc();
5529 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5530 0, NL80211_CMD_SET_CQM, 0);
5532 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5534 cqm = nlmsg_alloc();
5538 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5539 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5540 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5542 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5554 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5557 struct i802_bss *bss = priv;
5558 struct wpa_driver_nl80211_data *drv = bss->drv;
5559 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5563 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5565 .desc = "Linux nl80211/cfg80211",
5566 .get_bssid = wpa_driver_nl80211_get_bssid,
5567 .get_ssid = wpa_driver_nl80211_get_ssid,
5568 .set_key = wpa_driver_nl80211_set_key,
5569 .scan2 = wpa_driver_nl80211_scan,
5570 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5571 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5572 .disassociate = wpa_driver_nl80211_disassociate,
5573 .authenticate = wpa_driver_nl80211_authenticate,
5574 .associate = wpa_driver_nl80211_associate,
5575 .init = wpa_driver_nl80211_init,
5576 .deinit = wpa_driver_nl80211_deinit,
5577 .get_capa = wpa_driver_nl80211_get_capa,
5578 .set_operstate = wpa_driver_nl80211_set_operstate,
5579 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5580 .set_country = wpa_driver_nl80211_set_country,
5581 .set_beacon = wpa_driver_nl80211_set_beacon,
5582 .if_add = wpa_driver_nl80211_if_add,
5583 .if_remove = wpa_driver_nl80211_if_remove,
5584 .send_mlme = wpa_driver_nl80211_send_mlme,
5585 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5586 .sta_add = wpa_driver_nl80211_sta_add,
5587 .sta_remove = wpa_driver_nl80211_sta_remove,
5588 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5589 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5591 .hapd_init = i802_init,
5592 .hapd_deinit = i802_deinit,
5593 .get_seqnum = i802_get_seqnum,
5594 .flush = i802_flush,
5595 .read_sta_data = i802_read_sta_data,
5596 .sta_deauth = i802_sta_deauth,
5597 .sta_disassoc = i802_sta_disassoc,
5598 .get_inact_sec = i802_get_inact_sec,
5599 .sta_clear_stats = i802_sta_clear_stats,
5600 .set_rts = i802_set_rts,
5601 .set_frag = i802_set_frag,
5602 .set_rate_sets = i802_set_rate_sets,
5603 .set_cts_protect = i802_set_cts_protect,
5604 .set_preamble = i802_set_preamble,
5605 .set_short_slot_time = i802_set_short_slot_time,
5606 .set_tx_queue_params = i802_set_tx_queue_params,
5607 .set_sta_vlan = i802_set_sta_vlan,
5608 .set_wds_sta = i802_set_wds_sta,
5609 #endif /* HOSTAPD */
5610 .set_freq = i802_set_freq,
5611 .send_action = wpa_driver_nl80211_send_action,
5612 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5613 .cancel_remain_on_channel =
5614 wpa_driver_nl80211_cancel_remain_on_channel,
5615 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5616 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5617 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5618 .resume = wpa_driver_nl80211_resume,
5619 .send_ft_action = nl80211_send_ft_action,
5620 .signal_monitor = nl80211_signal_monitor,
5621 .send_frame = nl80211_send_frame,