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_handle *nl_handle_preq;
129 struct nl_cache *nl_cache;
130 struct nl_cache *nl_cache_event;
131 struct nl_cache *nl_cache_preq;
133 struct genl_family *nl80211;
135 u8 auth_bssid[ETH_ALEN];
141 int ap_scan_as_station;
142 unsigned int assoc_freq;
146 int disable_11b_rates;
148 unsigned int pending_remain_on_chan:1;
149 unsigned int added_bridge:1;
150 unsigned int added_if_into_bridge:1;
152 u64 remain_on_chan_cookie;
153 u64 send_action_cookie;
155 unsigned int last_mgmt_freq;
157 struct wpa_driver_scan_filter *filter_ssids;
158 size_t num_filter_ssids;
160 struct i802_bss first_bss;
163 int eapol_sock; /* socket for EAPOL frames */
165 int default_if_indices[16];
175 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
177 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
179 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
180 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
181 const u8 *addr, int cmd, u16 reason_code,
182 int local_state_change);
183 static void nl80211_remove_monitor_interface(
184 struct wpa_driver_nl80211_data *drv);
185 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
186 unsigned int freq, const u8 *buf,
187 size_t buf_len, u64 *cookie);
188 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
191 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
192 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
193 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
194 static int wpa_driver_nl80211_if_remove(void *priv,
195 enum wpa_driver_if_type type,
198 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
204 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
205 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
206 int ifindex, int disabled);
210 static int ack_handler(struct nl_msg *msg, void *arg)
217 static int finish_handler(struct nl_msg *msg, void *arg)
224 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
233 static int no_seq_check(struct nl_msg *msg, void *arg)
239 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
240 struct nl_handle *nl_handle, struct nl_msg *msg,
241 int (*valid_handler)(struct nl_msg *, void *),
247 cb = nl_cb_clone(drv->nl_cb);
251 err = nl_send_auto_complete(nl_handle, msg);
257 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
258 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
259 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
262 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
263 valid_handler, valid_data);
266 nl_recvmsgs(nl_handle, cb);
274 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
276 int (*valid_handler)(struct nl_msg *, void *),
279 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
290 static int family_handler(struct nl_msg *msg, void *arg)
292 struct family_data *res = arg;
293 struct nlattr *tb[CTRL_ATTR_MAX + 1];
294 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
295 struct nlattr *mcgrp;
298 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
299 genlmsg_attrlen(gnlh, 0), NULL);
300 if (!tb[CTRL_ATTR_MCAST_GROUPS])
303 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
304 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
305 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
306 nla_len(mcgrp), NULL);
307 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
308 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
309 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
311 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
313 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
321 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
322 const char *family, const char *group)
326 struct family_data res = { group, -ENOENT };
331 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
332 0, 0, CTRL_CMD_GETFAMILY, 0);
333 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
335 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
346 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
348 struct i802_bss *bss = priv;
349 struct wpa_driver_nl80211_data *drv = bss->drv;
350 if (!drv->associated)
352 os_memcpy(bssid, drv->bssid, ETH_ALEN);
357 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
359 struct i802_bss *bss = priv;
360 struct wpa_driver_nl80211_data *drv = bss->drv;
361 if (!drv->associated)
363 os_memcpy(ssid, drv->ssid, drv->ssid_len);
364 return drv->ssid_len;
368 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
369 char *buf, size_t len, int del)
371 union wpa_event_data event;
373 os_memset(&event, 0, sizeof(event));
374 if (len > sizeof(event.interface_status.ifname))
375 len = sizeof(event.interface_status.ifname) - 1;
376 os_memcpy(event.interface_status.ifname, buf, len);
377 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
378 EVENT_INTERFACE_ADDED;
380 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
382 event.interface_status.ifname,
383 del ? "removed" : "added");
385 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
392 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
396 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
399 int attrlen, rta_len;
403 attr = (struct rtattr *) buf;
405 rta_len = RTA_ALIGN(sizeof(struct rtattr));
406 while (RTA_OK(attr, attrlen)) {
407 if (attr->rta_type == IFLA_IFNAME) {
408 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
414 attr = RTA_NEXT(attr, attrlen);
421 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
422 int ifindex, u8 *buf, size_t len)
424 if (drv->ifindex == ifindex)
427 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
428 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
429 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
431 wpa_driver_nl80211_finish_drv_init(drv);
439 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
440 struct ifinfomsg *ifi,
443 struct wpa_driver_nl80211_data *drv = ctx;
444 int attrlen, rta_len;
448 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
449 !have_ifidx(drv, ifi->ifi_index)) {
450 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
451 "ifindex %d", ifi->ifi_index);
455 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
457 drv->operstate, ifi->ifi_flags,
458 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
459 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
460 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
461 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
463 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
464 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
465 drv->if_disabled = 1;
466 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
469 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
470 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
471 drv->if_disabled = 0;
472 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
476 * Some drivers send the association event before the operup event--in
477 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
478 * fails. This will hit us when wpa_supplicant does not need to do
479 * IEEE 802.1X authentication
481 if (drv->operstate == 1 &&
482 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
483 !(ifi->ifi_flags & IFF_RUNNING))
484 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
488 attr = (struct rtattr *) buf;
489 rta_len = RTA_ALIGN(sizeof(struct rtattr));
490 while (RTA_OK(attr, attrlen)) {
491 if (attr->rta_type == IFLA_IFNAME) {
492 wpa_driver_nl80211_event_link(
494 ((char *) attr) + rta_len,
495 attr->rta_len - rta_len, 0);
496 } else if (attr->rta_type == IFLA_MASTER)
497 brid = nla_get_u32((struct nlattr *) attr);
498 attr = RTA_NEXT(attr, attrlen);
502 if (ifi->ifi_family == AF_BRIDGE && brid) {
503 /* device has been added to bridge */
504 char namebuf[IFNAMSIZ];
505 if_indextoname(brid, namebuf);
506 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
508 add_ifidx(drv, brid);
514 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
515 struct ifinfomsg *ifi,
518 struct wpa_driver_nl80211_data *drv = ctx;
519 int attrlen, rta_len;
524 attr = (struct rtattr *) buf;
526 rta_len = RTA_ALIGN(sizeof(struct rtattr));
527 while (RTA_OK(attr, attrlen)) {
528 if (attr->rta_type == IFLA_IFNAME) {
529 wpa_driver_nl80211_event_link(
531 ((char *) attr) + rta_len,
532 attr->rta_len - rta_len, 1);
533 } else if (attr->rta_type == IFLA_MASTER)
534 brid = nla_get_u32((struct nlattr *) attr);
535 attr = RTA_NEXT(attr, attrlen);
539 if (ifi->ifi_family == AF_BRIDGE && brid) {
540 /* device has been removed from bridge */
541 char namebuf[IFNAMSIZ];
542 if_indextoname(brid, namebuf);
543 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
544 "%s", brid, namebuf);
545 del_ifidx(drv, brid);
551 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
552 const u8 *frame, size_t len)
554 const struct ieee80211_mgmt *mgmt;
555 union wpa_event_data event;
557 mgmt = (const struct ieee80211_mgmt *) frame;
558 if (len < 24 + sizeof(mgmt->u.auth)) {
559 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
564 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
565 os_memset(&event, 0, sizeof(event));
566 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
567 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
568 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
569 if (len > 24 + sizeof(mgmt->u.auth)) {
570 event.auth.ies = mgmt->u.auth.variable;
571 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
574 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
578 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
579 const u8 *frame, size_t len)
581 const struct ieee80211_mgmt *mgmt;
582 union wpa_event_data event;
585 mgmt = (const struct ieee80211_mgmt *) frame;
586 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
587 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
592 status = le_to_host16(mgmt->u.assoc_resp.status_code);
593 if (status != WLAN_STATUS_SUCCESS) {
594 os_memset(&event, 0, sizeof(event));
595 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
596 event.assoc_reject.resp_ies =
597 (u8 *) mgmt->u.assoc_resp.variable;
598 event.assoc_reject.resp_ies_len =
599 len - 24 - sizeof(mgmt->u.assoc_resp);
601 event.assoc_reject.status_code = status;
603 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
608 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
610 os_memset(&event, 0, sizeof(event));
611 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
612 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
613 event.assoc_info.resp_ies_len =
614 len - 24 - sizeof(mgmt->u.assoc_resp);
617 event.assoc_info.freq = drv->assoc_freq;
619 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
623 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
624 enum nl80211_commands cmd, struct nlattr *status,
625 struct nlattr *addr, struct nlattr *req_ie,
626 struct nlattr *resp_ie)
628 union wpa_event_data event;
630 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
632 * Avoid reporting two association events that would confuse
635 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
636 "when using userspace SME", cmd);
640 os_memset(&event, 0, sizeof(event));
641 if (cmd == NL80211_CMD_CONNECT &&
642 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
644 event.assoc_reject.resp_ies = nla_data(resp_ie);
645 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
647 event.assoc_reject.status_code = nla_get_u16(status);
648 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
654 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
657 event.assoc_info.req_ies = nla_data(req_ie);
658 event.assoc_info.req_ies_len = nla_len(req_ie);
661 event.assoc_info.resp_ies = nla_data(resp_ie);
662 event.assoc_info.resp_ies_len = nla_len(resp_ie);
665 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
669 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
670 enum nl80211_commands cmd, struct nlattr *addr)
672 union wpa_event_data event;
673 enum wpa_event_type ev;
675 if (nla_len(addr) != ETH_ALEN)
678 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
679 cmd, MAC2STR((u8 *) nla_data(addr)));
681 if (cmd == NL80211_CMD_AUTHENTICATE)
682 ev = EVENT_AUTH_TIMED_OUT;
683 else if (cmd == NL80211_CMD_ASSOCIATE)
684 ev = EVENT_ASSOC_TIMED_OUT;
688 os_memset(&event, 0, sizeof(event));
689 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
690 wpa_supplicant_event(drv->ctx, ev, &event);
694 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
695 struct nlattr *freq, const u8 *frame, size_t len)
697 const struct ieee80211_mgmt *mgmt;
698 union wpa_event_data event;
701 mgmt = (const struct ieee80211_mgmt *) frame;
703 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
707 fc = le_to_host16(mgmt->frame_control);
708 stype = WLAN_FC_GET_STYPE(fc);
710 os_memset(&event, 0, sizeof(event));
712 event.rx_action.freq = nla_get_u32(freq);
713 drv->last_mgmt_freq = event.rx_action.freq;
715 if (stype == WLAN_FC_STYPE_ACTION) {
716 event.rx_action.da = mgmt->da;
717 event.rx_action.sa = mgmt->sa;
718 event.rx_action.bssid = mgmt->bssid;
719 event.rx_action.category = mgmt->u.action.category;
720 event.rx_action.data = &mgmt->u.action.category + 1;
721 event.rx_action.len = frame + len - event.rx_action.data;
722 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
724 event.rx_mgmt.frame = frame;
725 event.rx_mgmt.frame_len = len;
726 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
731 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
732 struct nlattr *cookie, const u8 *frame,
733 size_t len, struct nlattr *ack)
735 union wpa_event_data event;
736 const struct ieee80211_hdr *hdr;
743 cookie_val = nla_get_u64(cookie);
744 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
746 (long long unsigned int) cookie_val,
747 cookie_val == drv->send_action_cookie ?
748 " (match)" : " (unknown)", ack != NULL);
749 if (cookie_val != drv->send_action_cookie)
752 hdr = (const struct ieee80211_hdr *) frame;
753 fc = le_to_host16(hdr->frame_control);
755 os_memset(&event, 0, sizeof(event));
756 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
757 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
758 event.tx_status.dst = hdr->addr1;
759 event.tx_status.data = frame;
760 event.tx_status.data_len = len;
761 event.tx_status.ack = ack != NULL;
762 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
766 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
767 enum wpa_event_type type,
768 const u8 *frame, size_t len)
770 const struct ieee80211_mgmt *mgmt;
771 union wpa_event_data event;
772 const u8 *bssid = NULL;
775 mgmt = (const struct ieee80211_mgmt *) frame;
779 if (drv->associated != 0 &&
780 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
781 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
783 * We have presumably received this deauth as a
784 * response to a clear_state_mismatch() outgoing
785 * deauth. Don't let it take us offline!
787 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
788 "from Unknown BSSID " MACSTR " -- ignoring",
795 os_memset(&event, 0, sizeof(event));
797 /* Note: Same offset for Reason Code in both frame subtypes */
798 if (len >= 24 + sizeof(mgmt->u.deauth))
799 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
801 if (type == EVENT_DISASSOC) {
802 event.disassoc_info.addr = bssid;
803 event.disassoc_info.reason_code = reason_code;
804 if (frame + len > mgmt->u.disassoc.variable) {
805 event.disassoc_info.ie = mgmt->u.disassoc.variable;
806 event.disassoc_info.ie_len = frame + len -
807 mgmt->u.disassoc.variable;
810 event.deauth_info.addr = bssid;
811 event.deauth_info.reason_code = reason_code;
812 if (frame + len > mgmt->u.deauth.variable) {
813 event.deauth_info.ie = mgmt->u.deauth.variable;
814 event.deauth_info.ie_len = frame + len -
815 mgmt->u.deauth.variable;
819 wpa_supplicant_event(drv->ctx, type, &event);
823 static void mlme_event(struct wpa_driver_nl80211_data *drv,
824 enum nl80211_commands cmd, struct nlattr *frame,
825 struct nlattr *addr, struct nlattr *timed_out,
826 struct nlattr *freq, struct nlattr *ack,
827 struct nlattr *cookie)
829 if (timed_out && addr) {
830 mlme_timeout_event(drv, cmd, addr);
835 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
840 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
841 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
842 nla_data(frame), nla_len(frame));
845 case NL80211_CMD_AUTHENTICATE:
846 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
848 case NL80211_CMD_ASSOCIATE:
849 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
851 case NL80211_CMD_DEAUTHENTICATE:
852 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
853 nla_data(frame), nla_len(frame));
855 case NL80211_CMD_DISASSOCIATE:
856 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
857 nla_data(frame), nla_len(frame));
859 case NL80211_CMD_FRAME:
860 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
862 case NL80211_CMD_FRAME_TX_STATUS:
863 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
864 nla_len(frame), ack);
872 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
875 union wpa_event_data data;
877 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
878 os_memset(&data, 0, sizeof(data));
879 if (tb[NL80211_ATTR_MAC]) {
880 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
881 nla_data(tb[NL80211_ATTR_MAC]),
882 nla_len(tb[NL80211_ATTR_MAC]));
883 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
885 if (tb[NL80211_ATTR_KEY_SEQ]) {
886 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
887 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
888 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
890 if (tb[NL80211_ATTR_KEY_TYPE]) {
891 enum nl80211_key_type key_type =
892 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
893 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
894 if (key_type == NL80211_KEYTYPE_PAIRWISE)
895 data.michael_mic_failure.unicast = 1;
897 data.michael_mic_failure.unicast = 1;
899 if (tb[NL80211_ATTR_KEY_IDX]) {
900 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
901 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
904 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
908 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
911 if (tb[NL80211_ATTR_MAC] == NULL) {
912 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
916 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
918 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
919 MAC2STR(drv->bssid));
921 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
925 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
926 int cancel_event, struct nlattr *tb[])
928 unsigned int freq, chan_type, duration;
929 union wpa_event_data data;
932 if (tb[NL80211_ATTR_WIPHY_FREQ])
933 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
937 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
938 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
942 if (tb[NL80211_ATTR_DURATION])
943 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
947 if (tb[NL80211_ATTR_COOKIE])
948 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
952 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
953 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
954 cancel_event, freq, chan_type, duration,
955 (long long unsigned int) cookie,
956 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
958 if (cookie != drv->remain_on_chan_cookie)
959 return; /* not for us */
961 drv->pending_remain_on_chan = !cancel_event;
963 os_memset(&data, 0, sizeof(data));
964 data.remain_on_channel.freq = freq;
965 data.remain_on_channel.duration = duration;
966 wpa_supplicant_event(drv->ctx, cancel_event ?
967 EVENT_CANCEL_REMAIN_ON_CHANNEL :
968 EVENT_REMAIN_ON_CHANNEL, &data);
972 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
975 union wpa_event_data event;
978 struct scan_info *info;
979 #define MAX_REPORT_FREQS 50
980 int freqs[MAX_REPORT_FREQS];
983 os_memset(&event, 0, sizeof(event));
984 info = &event.scan_info;
985 info->aborted = aborted;
987 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
988 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
989 struct wpa_driver_scan_ssid *s =
990 &info->ssids[info->num_ssids];
991 s->ssid = nla_data(nl);
992 s->ssid_len = nla_len(nl);
994 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
998 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
999 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1001 freqs[num_freqs] = nla_get_u32(nl);
1003 if (num_freqs == MAX_REPORT_FREQS - 1)
1006 info->freqs = freqs;
1007 info->num_freqs = num_freqs;
1009 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1013 static int get_link_signal(struct nl_msg *msg, void *arg)
1015 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1016 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1017 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1018 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1019 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1021 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1022 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1023 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1024 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1025 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1026 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1028 struct signal_change *sig_change = arg;
1030 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1031 genlmsg_attrlen(gnlh, 0), NULL);
1032 if (!tb[NL80211_ATTR_STA_INFO] ||
1033 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1034 tb[NL80211_ATTR_STA_INFO], policy))
1036 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1039 sig_change->current_signal =
1040 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1042 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1043 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1044 sinfo[NL80211_STA_INFO_TX_BITRATE],
1046 sig_change->current_txrate = 0;
1048 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1049 sig_change->current_txrate =
1051 NL80211_RATE_INFO_BITRATE]) * 100;
1060 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1061 struct signal_change *sig)
1065 sig->current_signal = -9999;
1066 sig->current_txrate = 0;
1068 msg = nlmsg_alloc();
1072 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1073 0, NL80211_CMD_GET_STATION, 0);
1075 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1076 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1078 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1084 static int get_link_noise(struct nl_msg *msg, void *arg)
1086 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1087 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1088 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1089 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1090 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1091 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1093 struct signal_change *sig_change = arg;
1095 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1096 genlmsg_attrlen(gnlh, 0), NULL);
1098 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1099 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1103 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1104 tb[NL80211_ATTR_SURVEY_INFO],
1106 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1111 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1114 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1115 sig_change->frequency)
1118 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1121 sig_change->current_noise =
1122 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1128 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1129 struct signal_change *sig_change)
1133 sig_change->current_noise = 9999;
1134 sig_change->frequency = drv->assoc_freq;
1136 msg = nlmsg_alloc();
1140 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1141 NLM_F_DUMP, NL80211_CMD_GET_SURVEY, 0);
1143 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1145 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1151 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1152 struct nlattr *tb[])
1154 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1155 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1156 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1157 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1159 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1160 enum nl80211_cqm_rssi_threshold_event event;
1161 union wpa_event_data ed;
1162 struct signal_change sig;
1165 if (tb[NL80211_ATTR_CQM] == NULL ||
1166 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1168 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1172 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1174 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1176 os_memset(&ed, 0, sizeof(ed));
1178 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1179 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1180 "event: RSSI high");
1181 ed.signal_change.above_threshold = 1;
1182 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1183 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1185 ed.signal_change.above_threshold = 0;
1189 res = nl80211_get_link_signal(drv, &sig);
1191 ed.signal_change.current_signal = sig.current_signal;
1192 ed.signal_change.current_txrate = sig.current_txrate;
1193 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1194 sig.current_signal, sig.current_txrate);
1197 res = nl80211_get_link_noise(drv, &sig);
1199 ed.signal_change.current_noise = sig.current_noise;
1200 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1204 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1208 static int process_event(struct nl_msg *msg, void *arg)
1210 struct wpa_driver_nl80211_data *drv = arg;
1211 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1212 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1213 union wpa_event_data data;
1215 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1216 genlmsg_attrlen(gnlh, 0), NULL);
1218 if (tb[NL80211_ATTR_IFINDEX]) {
1219 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1220 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1221 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1222 " for foreign interface (ifindex %d)",
1223 gnlh->cmd, ifindex);
1228 if (drv->ap_scan_as_station &&
1229 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1230 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1231 wpa_driver_nl80211_set_mode(&drv->first_bss,
1233 drv->ap_scan_as_station = 0;
1236 switch (gnlh->cmd) {
1237 case NL80211_CMD_TRIGGER_SCAN:
1238 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1240 case NL80211_CMD_NEW_SCAN_RESULTS:
1241 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1242 drv->scan_complete_events = 1;
1243 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1245 send_scan_event(drv, 0, tb);
1247 case NL80211_CMD_SCAN_ABORTED:
1248 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1250 * Need to indicate that scan results are available in order
1251 * not to make wpa_supplicant stop its scanning.
1253 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1255 send_scan_event(drv, 1, tb);
1257 case NL80211_CMD_AUTHENTICATE:
1258 case NL80211_CMD_ASSOCIATE:
1259 case NL80211_CMD_DEAUTHENTICATE:
1260 case NL80211_CMD_DISASSOCIATE:
1261 case NL80211_CMD_FRAME:
1262 case NL80211_CMD_FRAME_TX_STATUS:
1263 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1264 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1265 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1266 tb[NL80211_ATTR_COOKIE]);
1268 case NL80211_CMD_CONNECT:
1269 case NL80211_CMD_ROAM:
1270 mlme_event_connect(drv, gnlh->cmd,
1271 tb[NL80211_ATTR_STATUS_CODE],
1272 tb[NL80211_ATTR_MAC],
1273 tb[NL80211_ATTR_REQ_IE],
1274 tb[NL80211_ATTR_RESP_IE]);
1276 case NL80211_CMD_DISCONNECT:
1277 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1279 * Avoid reporting two disassociation events that could
1280 * confuse the core code.
1282 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1283 "event when using userspace SME");
1286 drv->associated = 0;
1287 os_memset(&data, 0, sizeof(data));
1288 if (tb[NL80211_ATTR_REASON_CODE])
1289 data.disassoc_info.reason_code =
1290 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1291 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1293 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1294 mlme_event_michael_mic_failure(drv, tb);
1296 case NL80211_CMD_JOIN_IBSS:
1297 mlme_event_join_ibss(drv, tb);
1299 case NL80211_CMD_REMAIN_ON_CHANNEL:
1300 mlme_event_remain_on_channel(drv, 0, tb);
1302 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1303 mlme_event_remain_on_channel(drv, 1, tb);
1305 case NL80211_CMD_NOTIFY_CQM:
1306 nl80211_cqm_event(drv, tb);
1308 case NL80211_CMD_REG_CHANGE:
1309 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1310 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1313 case NL80211_CMD_REG_BEACON_HINT:
1314 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1315 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1319 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1320 "(cmd=%d)", gnlh->cmd);
1328 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1332 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1334 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1336 cb = nl_cb_clone(drv->nl_cb);
1339 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1340 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1341 nl_recvmsgs(handle, cb);
1347 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1348 * @priv: driver_nl80211 private data
1349 * @alpha2_arg: country to which to switch to
1350 * Returns: 0 on success, -1 on failure
1352 * This asks nl80211 to set the regulatory domain for given
1353 * country ISO / IEC alpha2.
1355 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1357 struct i802_bss *bss = priv;
1358 struct wpa_driver_nl80211_data *drv = bss->drv;
1362 msg = nlmsg_alloc();
1366 alpha2[0] = alpha2_arg[0];
1367 alpha2[1] = alpha2_arg[1];
1370 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1371 0, NL80211_CMD_REQ_SET_REG, 0);
1373 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1374 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1383 struct wiphy_info_data {
1387 int connect_supported;
1391 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1393 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1394 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1395 struct wiphy_info_data *info = arg;
1397 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1398 genlmsg_attrlen(gnlh, 0), NULL);
1400 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1401 info->max_scan_ssids =
1402 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1404 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1405 struct nlattr *nl_mode;
1407 nla_for_each_nested(nl_mode,
1408 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1409 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1410 info->ap_supported = 1;
1416 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1417 struct nlattr *nl_cmd;
1420 nla_for_each_nested(nl_cmd,
1421 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1422 u32 cmd = nla_get_u32(nl_cmd);
1423 if (cmd == NL80211_CMD_AUTHENTICATE)
1424 info->auth_supported = 1;
1425 else if (cmd == NL80211_CMD_CONNECT)
1426 info->connect_supported = 1;
1434 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1435 struct wiphy_info_data *info)
1439 os_memset(info, 0, sizeof(*info));
1440 msg = nlmsg_alloc();
1444 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1445 0, NL80211_CMD_GET_WIPHY, 0);
1447 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1449 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1458 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1460 struct wiphy_info_data info;
1461 if (wpa_driver_nl80211_get_info(drv, &info))
1463 drv->has_capability = 1;
1464 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1465 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1466 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1467 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1468 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1469 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1470 WPA_DRIVER_CAPA_ENC_WEP104 |
1471 WPA_DRIVER_CAPA_ENC_TKIP |
1472 WPA_DRIVER_CAPA_ENC_CCMP;
1473 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1474 WPA_DRIVER_AUTH_SHARED |
1475 WPA_DRIVER_AUTH_LEAP;
1477 drv->capa.max_scan_ssids = info.max_scan_ssids;
1478 if (info.ap_supported)
1479 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1481 if (info.auth_supported)
1482 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1483 else if (!info.connect_supported) {
1484 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1485 "authentication/association or connect commands");
1489 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1490 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1491 drv->capa.max_remain_on_chan = 5000;
1495 #endif /* HOSTAPD */
1498 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1502 /* Initialize generic netlink and nl80211 */
1504 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1505 if (drv->nl_cb == NULL) {
1506 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1511 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1512 if (drv->nl_handle == NULL) {
1513 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1518 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1519 if (drv->nl_handle_event == NULL) {
1520 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1521 "callbacks (event)");
1525 if (genl_connect(drv->nl_handle)) {
1526 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1531 if (genl_connect(drv->nl_handle_event)) {
1532 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1537 #ifdef CONFIG_LIBNL20
1538 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1539 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1543 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1545 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1546 "netlink cache (event)");
1549 #else /* CONFIG_LIBNL20 */
1550 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1551 if (drv->nl_cache == NULL) {
1552 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1556 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1557 if (drv->nl_cache_event == NULL) {
1558 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1559 "netlink cache (event)");
1562 #endif /* CONFIG_LIBNL20 */
1564 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1565 if (drv->nl80211 == NULL) {
1566 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1571 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1573 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1575 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1576 "membership for scan events: %d (%s)",
1577 ret, strerror(-ret));
1581 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1583 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1585 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1586 "membership for mlme events: %d (%s)",
1587 ret, strerror(-ret));
1591 ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
1593 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1595 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1596 "membership for regulatory events: %d (%s)",
1597 ret, strerror(-ret));
1598 /* Continue without regulatory events */
1601 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1602 wpa_driver_nl80211_event_receive, drv,
1603 drv->nl_handle_event);
1608 nl_cache_free(drv->nl_cache_event);
1610 nl_cache_free(drv->nl_cache);
1612 nl80211_handle_destroy(drv->nl_handle_event);
1614 nl80211_handle_destroy(drv->nl_handle);
1616 nl_cb_put(drv->nl_cb);
1622 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1624 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1626 * This may be for any interface; use ifdown event to disable
1632 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1634 struct wpa_driver_nl80211_data *drv = ctx;
1635 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1636 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1637 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1638 "after rfkill unblock");
1641 /* rtnetlink ifup handler will report interface as enabled */
1646 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1647 * @ctx: context to be used when calling wpa_supplicant functions,
1648 * e.g., wpa_supplicant_event()
1649 * @ifname: interface name, e.g., wlan0
1650 * Returns: Pointer to private data, %NULL on failure
1652 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1654 struct wpa_driver_nl80211_data *drv;
1655 struct netlink_config *cfg;
1656 struct rfkill_config *rcfg;
1657 struct i802_bss *bss;
1659 drv = os_zalloc(sizeof(*drv));
1663 bss = &drv->first_bss;
1665 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1666 drv->monitor_ifidx = -1;
1667 drv->monitor_sock = -1;
1668 drv->ioctl_sock = -1;
1670 if (wpa_driver_nl80211_init_nl(drv)) {
1675 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1676 if (drv->ioctl_sock < 0) {
1677 perror("socket(PF_INET,SOCK_DGRAM)");
1681 cfg = os_zalloc(sizeof(*cfg));
1685 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1686 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1687 drv->netlink = netlink_init(cfg);
1688 if (drv->netlink == NULL) {
1693 rcfg = os_zalloc(sizeof(*rcfg));
1697 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1698 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1699 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1700 drv->rfkill = rfkill_init(rcfg);
1701 if (drv->rfkill == NULL) {
1702 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1706 if (wpa_driver_nl80211_finish_drv_init(drv))
1712 rfkill_deinit(drv->rfkill);
1713 netlink_deinit(drv->netlink);
1714 if (drv->ioctl_sock >= 0)
1715 close(drv->ioctl_sock);
1717 genl_family_put(drv->nl80211);
1718 nl_cache_free(drv->nl_cache);
1719 nl80211_handle_destroy(drv->nl_handle);
1720 nl_cb_put(drv->nl_cb);
1721 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1728 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1729 struct nl_handle *nl_handle,
1730 u16 type, const u8 *match, size_t match_len)
1735 msg = nlmsg_alloc();
1739 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1740 NL80211_CMD_REGISTER_ACTION, 0);
1742 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1743 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1744 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1746 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1749 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1750 "failed (type=%u): ret=%d (%s)",
1751 type, ret, strerror(-ret));
1752 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1754 goto nla_put_failure;
1763 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1764 const u8 *match, size_t match_len)
1766 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1767 return nl80211_register_frame(drv, drv->nl_handle_event,
1768 type, match, match_len);
1772 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1775 /* GAS Initial Request */
1776 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1778 /* GAS Initial Response */
1779 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1781 /* GAS Comeback Request */
1782 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1784 /* GAS Comeback Response */
1785 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1787 /* P2P Public Action */
1788 if (nl80211_register_action_frame(drv,
1789 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1793 if (nl80211_register_action_frame(drv,
1794 (u8 *) "\x7f\x50\x6f\x9a\x09",
1797 #endif /* CONFIG_P2P */
1799 /* FT Action frames */
1800 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1803 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1804 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1810 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1812 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1817 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1819 struct i802_bss *bss = &drv->first_bss;
1820 int send_rfkill_event = 0;
1822 drv->ifindex = if_nametoindex(bss->ifname);
1823 drv->first_bss.ifindex = drv->ifindex;
1826 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1827 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1828 "use managed mode");
1831 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1832 if (rfkill_is_blocked(drv->rfkill)) {
1833 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1834 "interface '%s' due to rfkill",
1836 drv->if_disabled = 1;
1837 send_rfkill_event = 1;
1839 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1840 "interface '%s' UP", bss->ifname);
1845 if (wpa_driver_nl80211_capa(drv))
1848 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1849 1, IF_OPER_DORMANT);
1850 #endif /* HOSTAPD */
1852 if (nl80211_register_action_frames(drv) < 0) {
1853 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1854 "frame processing - ignore for now");
1856 * Older kernel versions did not support this, so ignore the
1857 * error for now. Some functionality may not be available
1862 if (send_rfkill_event) {
1863 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1871 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1875 msg = nlmsg_alloc();
1879 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1880 0, NL80211_CMD_DEL_BEACON, 0);
1881 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1883 return send_and_recv_msgs(drv, msg, NULL, NULL);
1890 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1891 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1893 * Shut down driver interface and processing of driver events. Free
1894 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1896 static void wpa_driver_nl80211_deinit(void *priv)
1898 struct i802_bss *bss = priv;
1899 struct wpa_driver_nl80211_data *drv = bss->drv;
1901 if (drv->nl_handle_preq)
1902 wpa_driver_nl80211_probe_req_report(bss, 0);
1903 if (drv->added_if_into_bridge) {
1904 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1906 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1907 "interface %s from bridge %s: %s",
1908 bss->ifname, drv->brname, strerror(errno));
1910 if (drv->added_bridge) {
1911 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1912 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1914 drv->brname, strerror(errno));
1917 nl80211_remove_monitor_interface(drv);
1919 if (drv->nlmode == NL80211_IFTYPE_AP)
1920 wpa_driver_nl80211_del_beacon(drv);
1923 if (drv->last_freq_ht) {
1924 /* Clear HT flags from the driver */
1925 struct hostapd_freq_params freq;
1926 os_memset(&freq, 0, sizeof(freq));
1927 freq.freq = drv->last_freq;
1928 i802_set_freq(priv, &freq);
1931 if (drv->eapol_sock >= 0) {
1932 eloop_unregister_read_sock(drv->eapol_sock);
1933 close(drv->eapol_sock);
1936 if (drv->if_indices != drv->default_if_indices)
1937 os_free(drv->if_indices);
1938 #endif /* HOSTAPD */
1940 if (drv->disable_11b_rates)
1941 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1943 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1944 netlink_deinit(drv->netlink);
1945 rfkill_deinit(drv->rfkill);
1947 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1949 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1950 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1952 if (drv->ioctl_sock >= 0)
1953 close(drv->ioctl_sock);
1955 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1956 genl_family_put(drv->nl80211);
1957 nl_cache_free(drv->nl_cache);
1958 nl_cache_free(drv->nl_cache_event);
1959 nl80211_handle_destroy(drv->nl_handle);
1960 nl80211_handle_destroy(drv->nl_handle_event);
1961 nl_cb_put(drv->nl_cb);
1963 os_free(drv->filter_ssids);
1970 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1971 * @eloop_ctx: Driver private data
1972 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1974 * This function can be used as registered timeout when starting a scan to
1975 * generate a scan completed event if the driver does not report this.
1977 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1979 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1980 if (drv->ap_scan_as_station) {
1981 wpa_driver_nl80211_set_mode(&drv->first_bss,
1983 drv->ap_scan_as_station = 0;
1985 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1986 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1991 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1992 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1993 * @params: Scan parameters
1994 * Returns: 0 on success, -1 on failure
1996 static int wpa_driver_nl80211_scan(void *priv,
1997 struct wpa_driver_scan_params *params)
1999 struct i802_bss *bss = priv;
2000 struct wpa_driver_nl80211_data *drv = bss->drv;
2001 int ret = 0, timeout;
2002 struct nl_msg *msg, *ssids, *freqs;
2005 msg = nlmsg_alloc();
2006 ssids = nlmsg_alloc();
2007 freqs = nlmsg_alloc();
2008 if (!msg || !ssids || !freqs) {
2015 os_free(drv->filter_ssids);
2016 drv->filter_ssids = params->filter_ssids;
2017 params->filter_ssids = NULL;
2018 drv->num_filter_ssids = params->num_filter_ssids;
2020 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2021 NL80211_CMD_TRIGGER_SCAN, 0);
2023 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2025 for (i = 0; i < params->num_ssids; i++) {
2026 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2027 params->ssids[i].ssid,
2028 params->ssids[i].ssid_len);
2029 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2030 params->ssids[i].ssid);
2032 if (params->num_ssids)
2033 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2035 if (params->extra_ies) {
2036 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2037 params->extra_ies, params->extra_ies_len);
2038 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2042 if (params->freqs) {
2043 for (i = 0; params->freqs[i]; i++) {
2044 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2045 "MHz", params->freqs[i]);
2046 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2048 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2051 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2054 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2055 "(%s)", ret, strerror(-ret));
2057 if (drv->nlmode == NL80211_IFTYPE_AP) {
2059 * mac80211 does not allow scan requests in AP mode, so
2060 * try to do this in station mode.
2062 if (wpa_driver_nl80211_set_mode(bss,
2063 IEEE80211_MODE_INFRA))
2064 goto nla_put_failure;
2066 if (wpa_driver_nl80211_scan(drv, params)) {
2067 wpa_driver_nl80211_set_mode(bss,
2069 goto nla_put_failure;
2072 /* Restore AP mode when processing scan results */
2073 drv->ap_scan_as_station = 1;
2076 goto nla_put_failure;
2078 goto nla_put_failure;
2079 #endif /* HOSTAPD */
2082 /* Not all drivers generate "scan completed" wireless event, so try to
2083 * read results after a timeout. */
2085 if (drv->scan_complete_events) {
2087 * The driver seems to deliver events to notify when scan is
2088 * complete, so use longer timeout to avoid race conditions
2089 * with scanning and following association request.
2093 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2094 "seconds", ret, timeout);
2095 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2096 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2107 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2109 const u8 *end, *pos;
2115 end = ies + ies_len;
2117 while (pos + 1 < end) {
2118 if (pos + 2 + pos[1] > end)
2129 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2130 const u8 *ie, size_t ie_len)
2135 if (drv->filter_ssids == NULL)
2138 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2142 for (i = 0; i < drv->num_filter_ssids; i++) {
2143 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2144 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2153 struct nl80211_bss_info_arg {
2154 struct wpa_driver_nl80211_data *drv;
2155 struct wpa_scan_results *res;
2158 static int bss_info_handler(struct nl_msg *msg, void *arg)
2160 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2161 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2162 struct nlattr *bss[NL80211_BSS_MAX + 1];
2163 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2164 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2165 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2166 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2167 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2168 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2169 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2170 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2171 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2172 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2173 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2174 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2176 struct nl80211_bss_info_arg *_arg = arg;
2177 struct wpa_scan_results *res = _arg->res;
2178 struct wpa_scan_res **tmp;
2179 struct wpa_scan_res *r;
2180 const u8 *ie, *beacon_ie;
2181 size_t ie_len, beacon_ie_len;
2184 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2185 genlmsg_attrlen(gnlh, 0), NULL);
2186 if (!tb[NL80211_ATTR_BSS])
2188 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2191 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2192 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2193 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2198 if (bss[NL80211_BSS_BEACON_IES]) {
2199 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2200 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2206 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2207 ie ? ie_len : beacon_ie_len))
2210 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2213 if (bss[NL80211_BSS_BSSID])
2214 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2216 if (bss[NL80211_BSS_FREQUENCY])
2217 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2218 if (bss[NL80211_BSS_BEACON_INTERVAL])
2219 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2220 if (bss[NL80211_BSS_CAPABILITY])
2221 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2222 r->flags |= WPA_SCAN_NOISE_INVALID;
2223 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2224 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2225 r->level /= 100; /* mBm to dBm */
2226 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2227 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2228 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2229 r->flags |= WPA_SCAN_LEVEL_INVALID;
2231 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2232 if (bss[NL80211_BSS_TSF])
2233 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2234 if (bss[NL80211_BSS_SEEN_MS_AGO])
2235 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2237 pos = (u8 *) (r + 1);
2239 os_memcpy(pos, ie, ie_len);
2242 r->beacon_ie_len = beacon_ie_len;
2244 os_memcpy(pos, beacon_ie, beacon_ie_len);
2246 if (bss[NL80211_BSS_STATUS]) {
2247 enum nl80211_bss_status status;
2248 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2250 case NL80211_BSS_STATUS_AUTHENTICATED:
2251 r->flags |= WPA_SCAN_AUTHENTICATED;
2253 case NL80211_BSS_STATUS_ASSOCIATED:
2254 r->flags |= WPA_SCAN_ASSOCIATED;
2261 tmp = os_realloc(res->res,
2262 (res->num + 1) * sizeof(struct wpa_scan_res *));
2267 tmp[res->num++] = r;
2274 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2277 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2278 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2279 "mismatch (" MACSTR ")", MAC2STR(addr));
2280 wpa_driver_nl80211_mlme(drv, addr,
2281 NL80211_CMD_DEAUTHENTICATE,
2282 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2287 static void wpa_driver_nl80211_check_bss_status(
2288 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2292 for (i = 0; i < res->num; i++) {
2293 struct wpa_scan_res *r = res->res[i];
2294 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2295 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2296 "indicates BSS status with " MACSTR
2297 " as authenticated",
2299 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2300 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2301 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2303 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2304 " in local state (auth=" MACSTR
2305 " assoc=" MACSTR ")",
2306 MAC2STR(drv->auth_bssid),
2307 MAC2STR(drv->bssid));
2308 clear_state_mismatch(drv, r->bssid);
2312 if (r->flags & WPA_SCAN_ASSOCIATED) {
2313 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2314 "indicate BSS status with " MACSTR
2317 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2319 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2320 "(not associated) does not match "
2322 clear_state_mismatch(drv, r->bssid);
2323 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2324 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2326 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2327 "(associated with " MACSTR ") does "
2328 "not match with BSS state",
2329 MAC2STR(drv->bssid));
2330 clear_state_mismatch(drv, r->bssid);
2331 clear_state_mismatch(drv, drv->bssid);
2338 static void wpa_scan_results_free(struct wpa_scan_results *res)
2345 for (i = 0; i < res->num; i++)
2346 os_free(res->res[i]);
2352 static struct wpa_scan_results *
2353 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2356 struct wpa_scan_results *res;
2358 struct nl80211_bss_info_arg arg;
2360 res = os_zalloc(sizeof(*res));
2363 msg = nlmsg_alloc();
2365 goto nla_put_failure;
2367 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2368 NL80211_CMD_GET_SCAN, 0);
2369 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2373 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2376 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2377 (unsigned long) res->num);
2380 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2381 "(%s)", ret, strerror(-ret));
2384 wpa_scan_results_free(res);
2390 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2391 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2392 * Returns: Scan results on success, -1 on failure
2394 static struct wpa_scan_results *
2395 wpa_driver_nl80211_get_scan_results(void *priv)
2397 struct i802_bss *bss = priv;
2398 struct wpa_driver_nl80211_data *drv = bss->drv;
2399 struct wpa_scan_results *res;
2401 res = nl80211_get_scan_results(drv);
2403 wpa_driver_nl80211_check_bss_status(drv, res);
2408 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2410 struct wpa_scan_results *res;
2413 res = nl80211_get_scan_results(drv);
2415 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2419 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2420 for (i = 0; i < res->num; i++) {
2421 struct wpa_scan_res *r = res->res[i];
2422 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2423 (int) i, (int) res->num, MAC2STR(r->bssid),
2424 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2425 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2428 wpa_scan_results_free(res);
2432 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2433 enum wpa_alg alg, const u8 *addr,
2434 int key_idx, int set_tx,
2435 const u8 *seq, size_t seq_len,
2436 const u8 *key, size_t key_len)
2438 struct i802_bss *bss = priv;
2439 struct wpa_driver_nl80211_data *drv = bss->drv;
2440 int ifindex = if_nametoindex(ifname);
2444 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2445 "set_tx=%d seq_len=%lu key_len=%lu",
2446 __func__, ifindex, alg, addr, key_idx, set_tx,
2447 (unsigned long) seq_len, (unsigned long) key_len);
2449 msg = nlmsg_alloc();
2453 if (alg == WPA_ALG_NONE) {
2454 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2455 0, NL80211_CMD_DEL_KEY, 0);
2457 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2458 0, NL80211_CMD_NEW_KEY, 0);
2459 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2463 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2464 WLAN_CIPHER_SUITE_WEP40);
2466 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2467 WLAN_CIPHER_SUITE_WEP104);
2470 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2471 WLAN_CIPHER_SUITE_TKIP);
2474 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2475 WLAN_CIPHER_SUITE_CCMP);
2478 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2479 WLAN_CIPHER_SUITE_AES_CMAC);
2482 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2483 "algorithm %d", __func__, alg);
2490 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2492 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2494 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2495 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2497 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2498 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2500 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2501 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2504 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2505 ret, strerror(-ret));
2508 * If we failed or don't need to set the default TX key (below),
2511 if (ret || !set_tx || alg == WPA_ALG_NONE)
2517 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2519 #endif /* HOSTAPD */
2521 msg = nlmsg_alloc();
2525 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2526 0, NL80211_CMD_SET_KEY, 0);
2527 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2528 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2529 if (alg == WPA_ALG_IGTK)
2530 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2532 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2534 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2538 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2539 "err=%d %s)", ret, strerror(-ret));
2547 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2548 int key_idx, int defkey,
2549 const u8 *seq, size_t seq_len,
2550 const u8 *key, size_t key_len)
2552 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2556 if (defkey && alg == WPA_ALG_IGTK)
2557 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2559 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2561 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2566 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2567 WLAN_CIPHER_SUITE_WEP40);
2569 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2570 WLAN_CIPHER_SUITE_WEP104);
2573 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2576 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2579 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2580 WLAN_CIPHER_SUITE_AES_CMAC);
2583 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2584 "algorithm %d", __func__, alg);
2589 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2591 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2593 nla_nest_end(msg, key_attr);
2601 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2605 struct nlattr *nl_keys, *nl_key;
2607 for (i = 0; i < 4; i++) {
2608 if (!params->wep_key[i])
2616 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2618 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2620 goto nla_put_failure;
2622 for (i = 0; i < 4; i++) {
2623 if (!params->wep_key[i])
2626 nl_key = nla_nest_start(msg, i);
2628 goto nla_put_failure;
2630 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2631 params->wep_key[i]);
2632 if (params->wep_key_len[i] == 5)
2633 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2634 WLAN_CIPHER_SUITE_WEP40);
2636 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2637 WLAN_CIPHER_SUITE_WEP104);
2639 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2641 if (i == params->wep_tx_keyidx)
2642 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2644 nla_nest_end(msg, nl_key);
2646 nla_nest_end(msg, nl_keys);
2655 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2656 const u8 *addr, int cmd, u16 reason_code,
2657 int local_state_change)
2662 msg = nlmsg_alloc();
2666 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2668 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2669 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2670 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2671 if (local_state_change)
2672 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2674 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2677 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2678 "(%s)", ret, strerror(-ret));
2679 goto nla_put_failure;
2689 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2690 const u8 *addr, int reason_code)
2692 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2693 __func__, MAC2STR(addr), reason_code);
2694 drv->associated = 0;
2695 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2700 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2703 struct i802_bss *bss = priv;
2704 struct wpa_driver_nl80211_data *drv = bss->drv;
2705 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2706 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2707 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2708 __func__, MAC2STR(addr), reason_code);
2709 drv->associated = 0;
2710 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2715 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2718 struct i802_bss *bss = priv;
2719 struct wpa_driver_nl80211_data *drv = bss->drv;
2720 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2721 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2722 wpa_printf(MSG_DEBUG, "%s", __func__);
2723 drv->associated = 0;
2724 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2729 static int wpa_driver_nl80211_authenticate(
2730 void *priv, struct wpa_driver_auth_params *params)
2732 struct i802_bss *bss = priv;
2733 struct wpa_driver_nl80211_data *drv = bss->drv;
2736 enum nl80211_auth_type type;
2739 drv->associated = 0;
2740 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2741 /* FIX: IBSS mode */
2742 if (drv->nlmode != NL80211_IFTYPE_STATION)
2743 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2745 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2749 msg = nlmsg_alloc();
2753 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2756 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2757 NL80211_CMD_AUTHENTICATE, 0);
2759 for (i = 0; i < 4; i++) {
2760 if (!params->wep_key[i])
2762 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2764 i == params->wep_tx_keyidx, NULL, 0,
2766 params->wep_key_len[i]);
2767 if (params->wep_tx_keyidx != i)
2769 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2770 params->wep_key[i], params->wep_key_len[i])) {
2776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2777 if (params->bssid) {
2778 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2779 MAC2STR(params->bssid));
2780 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2783 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2784 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2787 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2788 params->ssid, params->ssid_len);
2789 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2792 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2794 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2795 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2796 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2797 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2798 type = NL80211_AUTHTYPE_SHARED_KEY;
2799 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2800 type = NL80211_AUTHTYPE_NETWORK_EAP;
2801 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2802 type = NL80211_AUTHTYPE_FT;
2804 goto nla_put_failure;
2805 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2806 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2807 if (params->local_state_change) {
2808 wpa_printf(MSG_DEBUG, " * Local state change only");
2809 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2812 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2815 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2816 "(%s)", ret, strerror(-ret));
2818 if (ret == -EALREADY && count == 1 && params->bssid &&
2819 !params->local_state_change) {
2821 * mac80211 does not currently accept new
2822 * authentication if we are already authenticated. As a
2823 * workaround, force deauthentication and try again.
2825 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2826 "after forced deauthentication");
2827 wpa_driver_nl80211_deauthenticate(
2829 WLAN_REASON_PREV_AUTH_NOT_VALID);
2833 goto nla_put_failure;
2836 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2845 struct phy_info_arg {
2847 struct hostapd_hw_modes *modes;
2850 static int phy_info_handler(struct nl_msg *msg, void *arg)
2852 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2853 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2854 struct phy_info_arg *phy_info = arg;
2856 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2858 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2859 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2860 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2861 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2862 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2863 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2864 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2865 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2868 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2869 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2870 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2871 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2874 struct nlattr *nl_band;
2875 struct nlattr *nl_freq;
2876 struct nlattr *nl_rate;
2877 int rem_band, rem_freq, rem_rate;
2878 struct hostapd_hw_modes *mode;
2879 int idx, mode_is_set;
2881 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2882 genlmsg_attrlen(gnlh, 0), NULL);
2884 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2887 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2888 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2891 phy_info->modes = mode;
2895 mode = &phy_info->modes[*(phy_info->num_modes)];
2896 memset(mode, 0, sizeof(*mode));
2897 *(phy_info->num_modes) += 1;
2899 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2900 nla_len(nl_band), NULL);
2902 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2903 mode->ht_capab = nla_get_u16(
2904 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2907 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2908 mode->a_mpdu_params |= nla_get_u8(
2909 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2913 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2914 mode->a_mpdu_params |= nla_get_u8(
2915 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2919 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2920 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2922 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2923 os_memcpy(mode->mcs_set, mcs, 16);
2926 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2927 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2928 nla_len(nl_freq), freq_policy);
2929 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2931 mode->num_channels++;
2934 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2935 if (!mode->channels)
2940 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2941 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2942 nla_len(nl_freq), freq_policy);
2943 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2946 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2947 mode->channels[idx].flag = 0;
2950 /* crude heuristic */
2951 if (mode->channels[idx].freq < 4000)
2952 mode->mode = HOSTAPD_MODE_IEEE80211B;
2954 mode->mode = HOSTAPD_MODE_IEEE80211A;
2958 /* crude heuristic */
2959 if (mode->channels[idx].freq < 4000)
2960 if (mode->channels[idx].freq == 2484)
2961 mode->channels[idx].chan = 14;
2963 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2965 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2967 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2968 mode->channels[idx].flag |=
2969 HOSTAPD_CHAN_DISABLED;
2970 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2971 mode->channels[idx].flag |=
2972 HOSTAPD_CHAN_PASSIVE_SCAN;
2973 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2974 mode->channels[idx].flag |=
2975 HOSTAPD_CHAN_NO_IBSS;
2976 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2977 mode->channels[idx].flag |=
2980 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2981 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2982 mode->channels[idx].max_tx_power =
2983 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2988 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2989 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2990 nla_len(nl_rate), rate_policy);
2991 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2996 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
3002 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3003 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3004 nla_len(nl_rate), rate_policy);
3005 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3007 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3009 /* crude heuristic */
3010 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3011 mode->rates[idx] > 200)
3012 mode->mode = HOSTAPD_MODE_IEEE80211G;
3021 static struct hostapd_hw_modes *
3022 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3025 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3026 int i, mode11g_idx = -1;
3028 /* If only 802.11g mode is included, use it to construct matching
3029 * 802.11b mode data. */
3031 for (m = 0; m < *num_modes; m++) {
3032 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3033 return modes; /* 802.11b already included */
3034 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3038 if (mode11g_idx < 0)
3039 return modes; /* 2.4 GHz band not supported at all */
3041 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3043 return modes; /* Could not add 802.11b mode */
3045 mode = &nmodes[*num_modes];
3046 os_memset(mode, 0, sizeof(*mode));
3050 mode->mode = HOSTAPD_MODE_IEEE80211B;
3052 mode11g = &modes[mode11g_idx];
3053 mode->num_channels = mode11g->num_channels;
3054 mode->channels = os_malloc(mode11g->num_channels *
3055 sizeof(struct hostapd_channel_data));
3056 if (mode->channels == NULL) {
3058 return modes; /* Could not add 802.11b mode */
3060 os_memcpy(mode->channels, mode11g->channels,
3061 mode11g->num_channels * sizeof(struct hostapd_channel_data));
3063 mode->num_rates = 0;
3064 mode->rates = os_malloc(4 * sizeof(int));
3065 if (mode->rates == NULL) {
3066 os_free(mode->channels);
3068 return modes; /* Could not add 802.11b mode */
3071 for (i = 0; i < mode11g->num_rates; i++) {
3072 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3073 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3075 mode->rates[mode->num_rates] = mode11g->rates[i];
3077 if (mode->num_rates == 4)
3081 if (mode->num_rates == 0) {
3082 os_free(mode->channels);
3083 os_free(mode->rates);
3085 return modes; /* No 802.11b rates */
3088 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3095 static struct hostapd_hw_modes *
3096 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3098 struct i802_bss *bss = priv;
3099 struct wpa_driver_nl80211_data *drv = bss->drv;
3101 struct phy_info_arg result = {
3102 .num_modes = num_modes,
3109 msg = nlmsg_alloc();
3113 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3114 0, NL80211_CMD_GET_WIPHY, 0);
3116 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3118 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
3119 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3125 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3126 const void *data, size_t len,
3130 0x00, 0x00, /* radiotap version */
3131 0x0e, 0x00, /* radiotap length */
3132 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3133 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3135 0x00, 0x00, /* RX and TX flags to indicate that */
3136 0x00, 0x00, /* this is the injected frame directly */
3138 struct iovec iov[2] = {
3140 .iov_base = &rtap_hdr,
3141 .iov_len = sizeof(rtap_hdr),
3144 .iov_base = (void *) data,
3148 struct msghdr msg = {
3153 .msg_control = NULL,
3154 .msg_controllen = 0,
3159 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3161 return sendmsg(drv->monitor_sock, &msg, 0);
3165 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3168 struct i802_bss *bss = priv;
3169 struct wpa_driver_nl80211_data *drv = bss->drv;
3170 struct ieee80211_mgmt *mgmt;
3174 mgmt = (struct ieee80211_mgmt *) data;
3175 fc = le_to_host16(mgmt->frame_control);
3177 if (drv->nlmode == NL80211_IFTYPE_STATION &&
3178 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3179 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3181 * The use of last_mgmt_freq is a bit of a hack,
3182 * but it works due to the single-threaded nature
3183 * of wpa_supplicant.
3185 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3186 data, data_len, NULL);
3189 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3190 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3192 * Only one of the authentication frame types is encrypted.
3193 * In order for static WEP encryption to work properly (i.e.,
3194 * to not encrypt the frame), we need to tell mac80211 about
3195 * the frames that must not be encrypted.
3197 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3198 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3199 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3203 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3207 static int wpa_driver_nl80211_set_beacon(void *priv,
3208 const u8 *head, size_t head_len,
3209 const u8 *tail, size_t tail_len,
3210 int dtim_period, int beacon_int)
3212 struct i802_bss *bss = priv;
3213 struct wpa_driver_nl80211_data *drv = bss->drv;
3215 u8 cmd = NL80211_CMD_NEW_BEACON;
3218 int ifindex = if_nametoindex(bss->ifname);
3220 beacon_set = bss->beacon_set;
3222 msg = nlmsg_alloc();
3226 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3229 cmd = NL80211_CMD_SET_BEACON;
3231 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3233 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3234 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3235 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3236 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3237 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3239 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3241 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3242 ret, strerror(-ret));
3244 bss->beacon_set = 1;
3252 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3253 int freq, int ht_enabled,
3254 int sec_channel_offset)
3259 msg = nlmsg_alloc();
3263 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3264 NL80211_CMD_SET_WIPHY, 0);
3266 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3267 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3269 switch (sec_channel_offset) {
3271 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3272 NL80211_CHAN_HT40MINUS);
3275 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3276 NL80211_CHAN_HT40PLUS);
3279 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3285 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3288 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3289 "%d (%s)", freq, ret, strerror(-ret));
3295 static int wpa_driver_nl80211_sta_add(void *priv,
3296 struct hostapd_sta_add_params *params)
3298 struct i802_bss *bss = priv;
3299 struct wpa_driver_nl80211_data *drv = bss->drv;
3303 msg = nlmsg_alloc();
3307 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3308 0, NL80211_CMD_NEW_STATION, 0);
3310 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3311 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3312 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3313 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3314 params->supp_rates);
3315 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3316 params->listen_interval);
3317 if (params->ht_capabilities) {
3318 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3319 sizeof(*params->ht_capabilities),
3320 params->ht_capabilities);
3323 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3325 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3326 "result: %d (%s)", ret, strerror(-ret));
3334 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3336 struct i802_bss *bss = priv;
3337 struct wpa_driver_nl80211_data *drv = bss->drv;
3341 msg = nlmsg_alloc();
3345 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3346 0, NL80211_CMD_DEL_STATION, 0);
3348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3349 if_nametoindex(bss->ifname));
3350 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3352 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3361 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3366 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3369 /* stop listening for EAPOL on this interface */
3370 del_ifidx(drv, ifidx);
3371 #endif /* HOSTAPD */
3373 msg = nlmsg_alloc();
3375 goto nla_put_failure;
3377 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3378 0, NL80211_CMD_DEL_INTERFACE, 0);
3379 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3381 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3384 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3388 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3390 enum nl80211_iftype iftype,
3391 const u8 *addr, int wds)
3393 struct nl_msg *msg, *flags = NULL;
3397 msg = nlmsg_alloc();
3401 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3402 0, NL80211_CMD_NEW_INTERFACE, 0);
3403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3404 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3405 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3407 if (iftype == NL80211_IFTYPE_MONITOR) {
3410 flags = nlmsg_alloc();
3412 goto nla_put_failure;
3414 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3416 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3421 goto nla_put_failure;
3423 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3426 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3429 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3430 ifname, ret, strerror(-ret));
3434 ifidx = if_nametoindex(ifname);
3435 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3442 /* start listening for EAPOL on this interface */
3443 add_ifidx(drv, ifidx);
3444 #endif /* HOSTAPD */
3446 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3447 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3448 nl80211_remove_iface(drv, ifidx);
3456 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3457 const char *ifname, enum nl80211_iftype iftype,
3458 const u8 *addr, int wds)
3462 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3464 /* if error occured and interface exists already */
3465 if (ret == -ENFILE && if_nametoindex(ifname)) {
3466 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3468 /* Try to remove the interface that was already there. */
3469 nl80211_remove_iface(drv, if_nametoindex(ifname));
3471 /* Try to create the interface again */
3472 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3476 if (ret >= 0 && drv->disable_11b_rates)
3477 nl80211_disable_11b_rates(drv, ret, 1);
3483 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3485 struct ieee80211_hdr *hdr;
3487 union wpa_event_data event;
3489 hdr = (struct ieee80211_hdr *) buf;
3490 fc = le_to_host16(hdr->frame_control);
3492 os_memset(&event, 0, sizeof(event));
3493 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3494 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3495 event.tx_status.dst = hdr->addr1;
3496 event.tx_status.data = buf;
3497 event.tx_status.data_len = len;
3498 event.tx_status.ack = ok;
3499 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3503 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3504 u8 *buf, size_t len)
3506 union wpa_event_data event;
3507 os_memset(&event, 0, sizeof(event));
3508 event.rx_from_unknown.frame = buf;
3509 event.rx_from_unknown.len = len;
3510 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3514 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3515 u8 *buf, size_t len, int datarate, int ssi_signal)
3517 struct ieee80211_hdr *hdr;
3519 union wpa_event_data event;
3521 hdr = (struct ieee80211_hdr *) buf;
3522 fc = le_to_host16(hdr->frame_control);
3524 switch (WLAN_FC_GET_TYPE(fc)) {
3525 case WLAN_FC_TYPE_MGMT:
3526 os_memset(&event, 0, sizeof(event));
3527 event.rx_mgmt.frame = buf;
3528 event.rx_mgmt.frame_len = len;
3529 event.rx_mgmt.datarate = datarate;
3530 event.rx_mgmt.ssi_signal = ssi_signal;
3531 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3533 case WLAN_FC_TYPE_CTRL:
3534 /* can only get here with PS-Poll frames */
3535 wpa_printf(MSG_DEBUG, "CTRL");
3536 from_unknown_sta(drv, buf, len);
3538 case WLAN_FC_TYPE_DATA:
3539 from_unknown_sta(drv, buf, len);
3545 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3547 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3549 unsigned char buf[3000];
3550 struct ieee80211_radiotap_iterator iter;
3552 int datarate = 0, ssi_signal = 0;
3553 int injected = 0, failed = 0, rxflags = 0;
3555 len = recv(sock, buf, sizeof(buf), 0);
3561 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3562 printf("received invalid radiotap frame\n");
3567 ret = ieee80211_radiotap_iterator_next(&iter);
3571 printf("received invalid radiotap frame (%d)\n", ret);
3574 switch (iter.this_arg_index) {
3575 case IEEE80211_RADIOTAP_FLAGS:
3576 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3579 case IEEE80211_RADIOTAP_RX_FLAGS:
3582 case IEEE80211_RADIOTAP_TX_FLAGS:
3584 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3585 IEEE80211_RADIOTAP_F_TX_FAIL;
3587 case IEEE80211_RADIOTAP_DATA_RETRIES:
3589 case IEEE80211_RADIOTAP_CHANNEL:
3590 /* TODO: convert from freq/flags to channel number */
3592 case IEEE80211_RADIOTAP_RATE:
3593 datarate = *iter.this_arg * 5;
3595 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3596 ssi_signal = *iter.this_arg;
3601 if (rxflags && injected)
3605 handle_frame(drv, buf + iter.max_length,
3606 len - iter.max_length, datarate, ssi_signal);
3608 handle_tx_callback(drv->ctx, buf + iter.max_length,
3609 len - iter.max_length, !failed);
3614 * we post-process the filter code later and rewrite
3615 * this to the offset to the last instruction
3620 static struct sock_filter msock_filter_insns[] = {
3622 * do a little-endian load of the radiotap length field
3624 /* load lower byte into A */
3625 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3626 /* put it into X (== index register) */
3627 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3628 /* load upper byte into A */
3629 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3630 /* left-shift it by 8 */
3631 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3633 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3634 /* put result into X */
3635 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3638 * Allow management frames through, this also gives us those
3639 * management frames that we sent ourselves with status
3641 /* load the lower byte of the IEEE 802.11 frame control field */
3642 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3643 /* mask off frame type and version */
3644 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3645 /* accept frame if it's both 0, fall through otherwise */
3646 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3649 * TODO: add a bit to radiotap RX flags that indicates
3650 * that the sending station is not associated, then
3651 * add a filter here that filters on our DA and that flag
3652 * to allow us to deauth frames to that bad station.
3654 * Not a regression -- we didn't do it before either.
3659 * drop non-data frames
3661 /* load the lower byte of the frame control field */
3662 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3663 /* mask off QoS bit */
3664 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3665 /* drop non-data frames */
3666 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3668 /* load the upper byte of the frame control field */
3669 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3670 /* mask off toDS/fromDS */
3671 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3672 /* accept WDS frames */
3673 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3676 * add header length to index
3678 /* load the lower byte of the frame control field */
3679 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3680 /* mask off QoS bit */
3681 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3682 /* right shift it by 6 to give 0 or 2 */
3683 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3684 /* add data frame header length */
3685 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3686 /* add index, was start of 802.11 header */
3687 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3688 /* move to index, now start of LL header */
3689 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3692 * Accept empty data frames, we use those for
3695 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3696 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3699 * Accept EAPOL frames
3701 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3702 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3703 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3704 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3706 /* keep these last two statements or change the code below */
3707 /* return 0 == "DROP" */
3708 BPF_STMT(BPF_RET | BPF_K, 0),
3709 /* return ~0 == "keep all" */
3710 BPF_STMT(BPF_RET | BPF_K, ~0),
3713 static struct sock_fprog msock_filter = {
3714 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3715 .filter = msock_filter_insns,
3719 static int add_monitor_filter(int s)
3723 /* rewrite all PASS/FAIL jump offsets */
3724 for (idx = 0; idx < msock_filter.len; idx++) {
3725 struct sock_filter *insn = &msock_filter_insns[idx];
3727 if (BPF_CLASS(insn->code) == BPF_JMP) {
3728 if (insn->code == (BPF_JMP|BPF_JA)) {
3729 if (insn->k == PASS)
3730 insn->k = msock_filter.len - idx - 2;
3731 else if (insn->k == FAIL)
3732 insn->k = msock_filter.len - idx - 3;
3735 if (insn->jt == PASS)
3736 insn->jt = msock_filter.len - idx - 2;
3737 else if (insn->jt == FAIL)
3738 insn->jt = msock_filter.len - idx - 3;
3740 if (insn->jf == PASS)
3741 insn->jf = msock_filter.len - idx - 2;
3742 else if (insn->jf == FAIL)
3743 insn->jf = msock_filter.len - idx - 3;
3747 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3748 &msock_filter, sizeof(msock_filter))) {
3749 perror("SO_ATTACH_FILTER");
3757 static void nl80211_remove_monitor_interface(
3758 struct wpa_driver_nl80211_data *drv)
3760 if (drv->monitor_ifidx >= 0) {
3761 nl80211_remove_iface(drv, drv->monitor_ifidx);
3762 drv->monitor_ifidx = -1;
3764 if (drv->monitor_sock >= 0) {
3765 eloop_unregister_read_sock(drv->monitor_sock);
3766 close(drv->monitor_sock);
3767 drv->monitor_sock = -1;
3773 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3776 struct sockaddr_ll ll;
3780 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3781 buf[IFNAMSIZ - 1] = '\0';
3783 drv->monitor_ifidx =
3784 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3787 if (drv->monitor_ifidx < 0)
3790 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3793 memset(&ll, 0, sizeof(ll));
3794 ll.sll_family = AF_PACKET;
3795 ll.sll_ifindex = drv->monitor_ifidx;
3796 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3797 if (drv->monitor_sock < 0) {
3798 perror("socket[PF_PACKET,SOCK_RAW]");
3802 if (add_monitor_filter(drv->monitor_sock)) {
3803 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3804 "interface; do filtering in user space");
3805 /* This works, but will cost in performance. */
3808 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3809 perror("monitor socket bind");
3813 optlen = sizeof(optval);
3816 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3817 perror("Failed to set socket priority");
3821 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3823 printf("Could not register monitor read socket\n");
3829 nl80211_remove_monitor_interface(drv);
3834 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3836 static int wpa_driver_nl80211_hapd_send_eapol(
3837 void *priv, const u8 *addr, const u8 *data,
3838 size_t data_len, int encrypt, const u8 *own_addr)
3840 struct i802_bss *bss = priv;
3841 struct wpa_driver_nl80211_data *drv = bss->drv;
3842 struct ieee80211_hdr *hdr;
3847 int qos = sta->flags & WPA_STA_WMM;
3852 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3854 hdr = os_zalloc(len);
3856 printf("malloc() failed for i802_send_data(len=%lu)\n",
3857 (unsigned long) len);
3861 hdr->frame_control =
3862 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3863 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3865 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3866 #if 0 /* To be enabled if qos determination is added above */
3868 hdr->frame_control |=
3869 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3873 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3874 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3875 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3876 pos = (u8 *) (hdr + 1);
3878 #if 0 /* To be enabled if qos determination is added above */
3880 /* add an empty QoS header if needed */
3887 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3888 pos += sizeof(rfc1042_header);
3889 WPA_PUT_BE16(pos, ETH_P_PAE);
3891 memcpy(pos, data, data_len);
3893 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3895 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3897 (unsigned long) len, errno, strerror(errno));
3905 static u32 sta_flags_nl80211(int flags)
3909 if (flags & WPA_STA_AUTHORIZED)
3910 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3911 if (flags & WPA_STA_WMM)
3912 f |= BIT(NL80211_STA_FLAG_WME);
3913 if (flags & WPA_STA_SHORT_PREAMBLE)
3914 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3915 if (flags & WPA_STA_MFP)
3916 f |= BIT(NL80211_STA_FLAG_MFP);
3922 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3924 int flags_or, int flags_and)
3926 struct i802_bss *bss = priv;
3927 struct wpa_driver_nl80211_data *drv = bss->drv;
3928 struct nl_msg *msg, *flags = NULL;
3929 struct nl80211_sta_flag_update upd;
3931 msg = nlmsg_alloc();
3935 flags = nlmsg_alloc();
3941 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3942 0, NL80211_CMD_SET_STATION, 0);
3944 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3945 if_nametoindex(bss->ifname));
3946 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3949 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3950 * can be removed eventually.
3952 if (total_flags & WPA_STA_AUTHORIZED)
3953 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3955 if (total_flags & WPA_STA_WMM)
3956 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3958 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3959 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3961 if (total_flags & WPA_STA_MFP)
3962 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3964 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3965 goto nla_put_failure;
3967 os_memset(&upd, 0, sizeof(upd));
3968 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3969 upd.set = sta_flags_nl80211(flags_or);
3970 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3974 return send_and_recv_msgs(drv, msg, NULL, NULL);
3981 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3982 struct wpa_driver_associate_params *params)
3985 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3987 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3988 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3989 nl80211_remove_monitor_interface(drv);
3993 /* TODO: setup monitor interface (and add code somewhere to remove this
3994 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
4000 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
4005 msg = nlmsg_alloc();
4009 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4010 NL80211_CMD_LEAVE_IBSS, 0);
4011 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4012 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4015 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4016 "(%s)", ret, strerror(-ret));
4017 goto nla_put_failure;
4021 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4029 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4030 struct wpa_driver_associate_params *params)
4036 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4038 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4039 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4045 msg = nlmsg_alloc();
4049 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4050 NL80211_CMD_JOIN_IBSS, 0);
4051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4053 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4054 goto nla_put_failure;
4056 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4057 params->ssid, params->ssid_len);
4058 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4060 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4061 drv->ssid_len = params->ssid_len;
4063 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4064 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4066 ret = nl80211_set_conn_keys(params, msg);
4068 goto nla_put_failure;
4070 if (params->wpa_ie) {
4071 wpa_hexdump(MSG_DEBUG,
4072 " * Extra IEs for Beacon/Probe Response frames",
4073 params->wpa_ie, params->wpa_ie_len);
4074 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4078 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4081 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4082 ret, strerror(-ret));
4084 if (ret == -EALREADY && count == 1) {
4085 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4087 nl80211_leave_ibss(drv);
4092 goto nla_put_failure;
4095 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4103 static int wpa_driver_nl80211_connect(
4104 struct wpa_driver_nl80211_data *drv,
4105 struct wpa_driver_associate_params *params)
4108 enum nl80211_auth_type type;
4111 msg = nlmsg_alloc();
4115 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4116 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4117 NL80211_CMD_CONNECT, 0);
4119 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4120 if (params->bssid) {
4121 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4122 MAC2STR(params->bssid));
4123 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4126 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4127 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4130 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4131 params->ssid, params->ssid_len);
4132 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4134 if (params->ssid_len > sizeof(drv->ssid))
4135 goto nla_put_failure;
4136 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4137 drv->ssid_len = params->ssid_len;
4139 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4141 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4144 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4145 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4146 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4147 type = NL80211_AUTHTYPE_SHARED_KEY;
4148 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4149 type = NL80211_AUTHTYPE_NETWORK_EAP;
4150 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4151 type = NL80211_AUTHTYPE_FT;
4153 goto nla_put_failure;
4155 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4156 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4158 if (params->wpa_ie && params->wpa_ie_len) {
4159 enum nl80211_wpa_versions ver;
4161 if (params->wpa_ie[0] == WLAN_EID_RSN)
4162 ver = NL80211_WPA_VERSION_2;
4164 ver = NL80211_WPA_VERSION_1;
4166 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4167 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4170 if (params->pairwise_suite != CIPHER_NONE) {
4173 switch (params->pairwise_suite) {
4175 cipher = WLAN_CIPHER_SUITE_WEP40;
4178 cipher = WLAN_CIPHER_SUITE_WEP104;
4181 cipher = WLAN_CIPHER_SUITE_CCMP;
4185 cipher = WLAN_CIPHER_SUITE_TKIP;
4188 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4191 if (params->group_suite != CIPHER_NONE) {
4194 switch (params->group_suite) {
4196 cipher = WLAN_CIPHER_SUITE_WEP40;
4199 cipher = WLAN_CIPHER_SUITE_WEP104;
4202 cipher = WLAN_CIPHER_SUITE_CCMP;
4206 cipher = WLAN_CIPHER_SUITE_TKIP;
4209 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4212 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4213 params->key_mgmt_suite == KEY_MGMT_PSK) {
4214 int mgmt = WLAN_AKM_SUITE_PSK;
4216 switch (params->key_mgmt_suite) {
4217 case KEY_MGMT_802_1X:
4218 mgmt = WLAN_AKM_SUITE_8021X;
4222 mgmt = WLAN_AKM_SUITE_PSK;
4225 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4228 ret = nl80211_set_conn_keys(params, msg);
4230 goto nla_put_failure;
4232 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4235 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4236 "(%s)", ret, strerror(-ret));
4237 goto nla_put_failure;
4240 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4249 static int wpa_driver_nl80211_associate(
4250 void *priv, struct wpa_driver_associate_params *params)
4252 struct i802_bss *bss = priv;
4253 struct wpa_driver_nl80211_data *drv = bss->drv;
4257 if (params->mode == IEEE80211_MODE_AP)
4258 return wpa_driver_nl80211_ap(drv, params);
4260 if (params->mode == IEEE80211_MODE_IBSS)
4261 return wpa_driver_nl80211_ibss(drv, params);
4263 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4264 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4266 return wpa_driver_nl80211_connect(drv, params);
4269 drv->associated = 0;
4271 msg = nlmsg_alloc();
4275 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4277 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4278 NL80211_CMD_ASSOCIATE, 0);
4280 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4281 if (params->bssid) {
4282 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4283 MAC2STR(params->bssid));
4284 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4287 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4288 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4289 drv->assoc_freq = params->freq;
4291 drv->assoc_freq = 0;
4293 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4294 params->ssid, params->ssid_len);
4295 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4297 if (params->ssid_len > sizeof(drv->ssid))
4298 goto nla_put_failure;
4299 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4300 drv->ssid_len = params->ssid_len;
4302 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4304 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4307 #ifdef CONFIG_IEEE80211W
4308 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4309 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4310 #endif /* CONFIG_IEEE80211W */
4312 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4314 if (params->prev_bssid) {
4315 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4316 MAC2STR(params->prev_bssid));
4317 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4318 params->prev_bssid);
4322 wpa_printf(MSG_DEBUG, " * P2P group");
4324 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4327 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4328 "(%s)", ret, strerror(-ret));
4329 nl80211_dump_scan(drv);
4330 goto nla_put_failure;
4333 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4342 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4343 int ifindex, int mode)
4348 msg = nlmsg_alloc();
4352 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4353 0, NL80211_CMD_SET_INTERFACE, 0);
4354 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4355 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4357 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4361 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4362 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4367 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4369 struct i802_bss *bss = priv;
4370 struct wpa_driver_nl80211_data *drv = bss->drv;
4377 nlmode = NL80211_IFTYPE_STATION;
4380 nlmode = NL80211_IFTYPE_ADHOC;
4383 nlmode = NL80211_IFTYPE_AP;
4389 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4390 drv->nlmode = nlmode;
4395 if (nlmode == drv->nlmode) {
4396 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4397 "requested mode - ignore error");
4399 goto done; /* Already in the requested mode */
4402 /* mac80211 doesn't allow mode changes while the device is up, so
4403 * take the device down, try to set the mode again, and bring the
4406 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4408 for (i = 0; i < 10; i++) {
4409 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4411 /* Try to set the mode again while the interface is
4413 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4414 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4420 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4422 os_sleep(0, 100000);
4426 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4427 "interface is down");
4428 drv->nlmode = nlmode;
4432 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4433 /* Setup additional AP mode functionality if needed */
4434 if (drv->monitor_ifidx < 0 &&
4435 nl80211_create_monitor_interface(drv))
4437 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4438 /* Remove additional AP mode functionality */
4439 nl80211_remove_monitor_interface(drv);
4440 bss->beacon_set = 0;
4444 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4445 "from %d failed", nlmode, drv->nlmode);
4451 static int wpa_driver_nl80211_get_capa(void *priv,
4452 struct wpa_driver_capa *capa)
4454 struct i802_bss *bss = priv;
4455 struct wpa_driver_nl80211_data *drv = bss->drv;
4456 if (!drv->has_capability)
4458 os_memcpy(capa, &drv->capa, sizeof(*capa));
4463 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4465 struct i802_bss *bss = priv;
4466 struct wpa_driver_nl80211_data *drv = bss->drv;
4468 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4469 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4470 drv->operstate = state;
4471 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4472 state ? IF_OPER_UP : IF_OPER_DORMANT);
4476 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4478 struct i802_bss *bss = priv;
4479 struct wpa_driver_nl80211_data *drv = bss->drv;
4481 struct nl80211_sta_flag_update upd;
4483 msg = nlmsg_alloc();
4487 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4488 0, NL80211_CMD_SET_STATION, 0);
4490 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4491 if_nametoindex(bss->ifname));
4492 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4494 os_memset(&upd, 0, sizeof(upd));
4495 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4497 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4498 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4500 return send_and_recv_msgs(drv, msg, NULL, NULL);
4508 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4513 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4515 for (i = 0; i < drv->num_if_indices; i++) {
4516 if (drv->if_indices[i] == 0) {
4517 drv->if_indices[i] = ifidx;
4522 if (drv->if_indices != drv->default_if_indices)
4523 old = drv->if_indices;
4527 drv->if_indices = os_realloc(old,
4528 sizeof(int) * (drv->num_if_indices + 1));
4529 if (!drv->if_indices) {
4531 drv->if_indices = drv->default_if_indices;
4533 drv->if_indices = old;
4534 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4536 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4539 os_memcpy(drv->if_indices, drv->default_if_indices,
4540 sizeof(drv->default_if_indices));
4541 drv->if_indices[drv->num_if_indices] = ifidx;
4542 drv->num_if_indices++;
4546 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4550 for (i = 0; i < drv->num_if_indices; i++) {
4551 if (drv->if_indices[i] == ifidx) {
4552 drv->if_indices[i] = 0;
4559 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4563 for (i = 0; i < drv->num_if_indices; i++)
4564 if (drv->if_indices[i] == ifidx)
4571 static inline int min_int(int a, int b)
4579 static int get_key_handler(struct nl_msg *msg, void *arg)
4581 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4582 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4584 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4585 genlmsg_attrlen(gnlh, 0), NULL);
4588 * TODO: validate the key index and mac address!
4589 * Otherwise, there's a race condition as soon as
4590 * the kernel starts sending key notifications.
4593 if (tb[NL80211_ATTR_KEY_SEQ])
4594 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4595 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4600 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4603 struct i802_bss *bss = priv;
4604 struct wpa_driver_nl80211_data *drv = bss->drv;
4607 msg = nlmsg_alloc();
4611 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4612 0, NL80211_CMD_GET_KEY, 0);
4615 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4616 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4617 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4621 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4627 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4630 struct i802_bss *bss = priv;
4631 struct wpa_driver_nl80211_data *drv = bss->drv;
4633 u8 rates[NL80211_MAX_SUPP_RATES];
4637 msg = nlmsg_alloc();
4641 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4642 NL80211_CMD_SET_BSS, 0);
4644 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4645 rates[rates_len++] = basic_rates[i] / 5;
4647 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4651 return send_and_recv_msgs(drv, msg, NULL, NULL);
4656 #endif /* HOSTAPD */
4659 /* Set kernel driver on given frequency (MHz) */
4660 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4662 struct i802_bss *bss = priv;
4663 struct wpa_driver_nl80211_data *drv = bss->drv;
4664 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4665 freq->sec_channel_offset);
4671 static int i802_set_rts(void *priv, int rts)
4673 struct i802_bss *bss = priv;
4674 struct wpa_driver_nl80211_data *drv = bss->drv;
4679 msg = nlmsg_alloc();
4688 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4689 0, NL80211_CMD_SET_WIPHY, 0);
4690 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4691 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4693 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4697 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4698 "%d (%s)", rts, ret, strerror(-ret));
4703 static int i802_set_frag(void *priv, int frag)
4705 struct i802_bss *bss = priv;
4706 struct wpa_driver_nl80211_data *drv = bss->drv;
4711 msg = nlmsg_alloc();
4720 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4721 0, NL80211_CMD_SET_WIPHY, 0);
4722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4723 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4725 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4729 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4730 "%d: %d (%s)", frag, ret, strerror(-ret));
4735 static int i802_flush(void *priv)
4737 struct i802_bss *bss = priv;
4738 struct wpa_driver_nl80211_data *drv = bss->drv;
4741 msg = nlmsg_alloc();
4745 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4746 0, NL80211_CMD_DEL_STATION, 0);
4749 * XXX: FIX! this needs to flush all VLANs too
4751 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4752 if_nametoindex(bss->ifname));
4754 return send_and_recv_msgs(drv, msg, NULL, NULL);
4760 static int get_sta_handler(struct nl_msg *msg, void *arg)
4762 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4763 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4764 struct hostap_sta_driver_data *data = arg;
4765 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4766 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4767 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4768 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4769 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4770 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4771 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4774 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4775 genlmsg_attrlen(gnlh, 0), NULL);
4778 * TODO: validate the interface and mac address!
4779 * Otherwise, there's a race condition as soon as
4780 * the kernel starts sending station notifications.
4783 if (!tb[NL80211_ATTR_STA_INFO]) {
4784 wpa_printf(MSG_DEBUG, "sta stats missing!");
4787 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4788 tb[NL80211_ATTR_STA_INFO],
4790 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4794 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4795 data->inactive_msec =
4796 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4797 if (stats[NL80211_STA_INFO_RX_BYTES])
4798 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4799 if (stats[NL80211_STA_INFO_TX_BYTES])
4800 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4801 if (stats[NL80211_STA_INFO_RX_PACKETS])
4803 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4804 if (stats[NL80211_STA_INFO_TX_PACKETS])
4806 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4811 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4814 struct i802_bss *bss = priv;
4815 struct wpa_driver_nl80211_data *drv = bss->drv;
4818 os_memset(data, 0, sizeof(*data));
4819 msg = nlmsg_alloc();
4823 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4824 0, NL80211_CMD_GET_STATION, 0);
4826 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4829 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4835 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4836 int cw_min, int cw_max, int burst_time)
4838 struct i802_bss *bss = priv;
4839 struct wpa_driver_nl80211_data *drv = bss->drv;
4841 struct nlattr *txq, *params;
4843 msg = nlmsg_alloc();
4847 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4848 0, NL80211_CMD_SET_WIPHY, 0);
4850 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4852 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4854 goto nla_put_failure;
4856 /* We are only sending parameters for a single TXQ at a time */
4857 params = nla_nest_start(msg, 1);
4859 goto nla_put_failure;
4861 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4862 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4863 * 32 usec, so need to convert the value here. */
4864 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4865 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4866 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4867 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4869 nla_nest_end(msg, params);
4871 nla_nest_end(msg, txq);
4873 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4880 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4882 struct i802_bss *bss = priv;
4883 struct wpa_driver_nl80211_data *drv = bss->drv;
4886 msg = nlmsg_alloc();
4890 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4891 NL80211_CMD_SET_BSS, 0);
4894 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4896 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4898 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4900 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4902 return send_and_recv_msgs(drv, msg, NULL, NULL);
4908 static int i802_set_cts_protect(void *priv, int value)
4910 return i802_set_bss(priv, value, -1, -1);
4914 static int i802_set_preamble(void *priv, int value)
4916 return i802_set_bss(priv, -1, value, -1);
4920 static int i802_set_short_slot_time(void *priv, int value)
4922 return i802_set_bss(priv, -1, -1, value);
4926 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4927 const char *ifname, int vlan_id)
4929 struct i802_bss *bss = priv;
4930 struct wpa_driver_nl80211_data *drv = bss->drv;
4934 msg = nlmsg_alloc();
4938 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4939 0, NL80211_CMD_SET_STATION, 0);
4941 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4942 if_nametoindex(bss->ifname));
4943 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4944 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4945 if_nametoindex(ifname));
4947 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4949 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4950 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4951 MAC2STR(addr), ifname, vlan_id, ret,
4959 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4961 struct i802_bss *bss = priv;
4962 struct wpa_driver_nl80211_data *drv = bss->drv;
4963 char name[IFNAMSIZ + 1];
4965 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4966 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4967 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4969 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4972 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4973 return i802_set_sta_vlan(priv, addr, name, 0);
4975 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4976 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4982 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4984 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4985 struct sockaddr_ll lladdr;
4986 unsigned char buf[3000];
4988 socklen_t fromlen = sizeof(lladdr);
4990 len = recvfrom(sock, buf, sizeof(buf), 0,
4991 (struct sockaddr *)&lladdr, &fromlen);
4997 if (have_ifidx(drv, lladdr.sll_ifindex))
4998 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5002 static int i802_get_inact_sec(void *priv, const u8 *addr)
5004 struct hostap_sta_driver_data data;
5007 data.inactive_msec = (unsigned long) -1;
5008 ret = i802_read_sta_data(priv, &data, addr);
5009 if (ret || data.inactive_msec == (unsigned long) -1)
5011 return data.inactive_msec / 1000;
5015 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5024 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5027 struct i802_bss *bss = priv;
5028 struct ieee80211_mgmt mgmt;
5030 memset(&mgmt, 0, sizeof(mgmt));
5031 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5032 WLAN_FC_STYPE_DEAUTH);
5033 memcpy(mgmt.da, addr, ETH_ALEN);
5034 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5035 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5036 mgmt.u.deauth.reason_code = host_to_le16(reason);
5037 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5039 sizeof(mgmt.u.deauth));
5043 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5046 struct i802_bss *bss = priv;
5047 struct ieee80211_mgmt mgmt;
5049 memset(&mgmt, 0, sizeof(mgmt));
5050 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5051 WLAN_FC_STYPE_DISASSOC);
5052 memcpy(mgmt.da, addr, ETH_ALEN);
5053 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5054 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5055 mgmt.u.disassoc.reason_code = host_to_le16(reason);
5056 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5058 sizeof(mgmt.u.disassoc));
5062 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5063 const char *brname, const char *ifname)
5066 char in_br[IFNAMSIZ];
5068 os_strlcpy(drv->brname, brname, IFNAMSIZ);
5069 ifindex = if_nametoindex(brname);
5072 * Bridge was configured, but the bridge device does
5073 * not exist. Try to add it now.
5075 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5076 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5077 "bridge interface %s: %s",
5078 brname, strerror(errno));
5081 drv->added_bridge = 1;
5082 add_ifidx(drv, if_nametoindex(brname));
5085 if (linux_br_get(in_br, ifname) == 0) {
5086 if (os_strcmp(in_br, brname) == 0)
5087 return 0; /* already in the bridge */
5089 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5090 "bridge %s", ifname, in_br);
5091 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5092 wpa_printf(MSG_ERROR, "nl80211: Failed to "
5093 "remove interface %s from bridge "
5095 ifname, brname, strerror(errno));
5100 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5102 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5103 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5104 "into bridge %s: %s",
5105 ifname, brname, strerror(errno));
5108 drv->added_if_into_bridge = 1;
5114 static void *i802_init(struct hostapd_data *hapd,
5115 struct wpa_init_params *params)
5117 struct wpa_driver_nl80211_data *drv;
5118 struct i802_bss *bss;
5120 char brname[IFNAMSIZ];
5121 int ifindex, br_ifindex;
5124 bss = wpa_driver_nl80211_init(hapd, params->ifname);
5129 if (linux_br_get(brname, params->ifname) == 0) {
5130 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5131 params->ifname, brname);
5132 br_ifindex = if_nametoindex(brname);
5138 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5139 drv->if_indices = drv->default_if_indices;
5140 for (i = 0; i < params->num_bridge; i++) {
5141 if (params->bridge[i]) {
5142 ifindex = if_nametoindex(params->bridge[i]);
5144 add_ifidx(drv, ifindex);
5145 if (ifindex == br_ifindex)
5149 if (!br_added && br_ifindex &&
5150 (params->num_bridge == 0 || !params->bridge[0]))
5151 add_ifidx(drv, br_ifindex);
5153 /* start listening for EAPOL on the default AP interface */
5154 add_ifidx(drv, drv->ifindex);
5156 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5159 if (params->bssid) {
5160 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5165 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5166 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5167 "into AP mode", bss->ifname);
5171 if (params->num_bridge && params->bridge[0] &&
5172 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5175 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5178 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5179 if (drv->eapol_sock < 0) {
5180 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5184 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5186 printf("Could not register read socket for eapol\n");
5190 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5196 nl80211_remove_monitor_interface(drv);
5197 if (drv->ioctl_sock >= 0)
5198 close(drv->ioctl_sock);
5200 genl_family_put(drv->nl80211);
5201 nl_cache_free(drv->nl_cache);
5202 nl80211_handle_destroy(drv->nl_handle);
5203 nl_cb_put(drv->nl_cb);
5210 static void i802_deinit(void *priv)
5212 wpa_driver_nl80211_deinit(priv);
5215 #endif /* HOSTAPD */
5218 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5219 enum wpa_driver_if_type type)
5222 case WPA_IF_STATION:
5223 case WPA_IF_P2P_CLIENT:
5224 case WPA_IF_P2P_GROUP:
5225 return NL80211_IFTYPE_STATION;
5226 case WPA_IF_AP_VLAN:
5227 return NL80211_IFTYPE_AP_VLAN;
5230 return NL80211_IFTYPE_AP;
5236 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5237 const char *ifname, const u8 *addr,
5238 void *bss_ctx, void **drv_priv,
5239 char *force_ifname, u8 *if_addr)
5241 struct i802_bss *bss = priv;
5242 struct wpa_driver_nl80211_data *drv = bss->drv;
5245 struct i802_bss *new_bss = NULL;
5247 if (type == WPA_IF_AP_BSS) {
5248 new_bss = os_zalloc(sizeof(*new_bss));
5249 if (new_bss == NULL)
5252 #endif /* HOSTAPD */
5255 os_memcpy(if_addr, addr, ETH_ALEN);
5256 ifidx = nl80211_create_iface(drv, ifname,
5257 wpa_driver_nl80211_if_type(type), addr,
5262 #endif /* HOSTAPD */
5267 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5271 if (type == WPA_IF_AP_BSS) {
5272 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5273 nl80211_remove_iface(drv, ifidx);
5277 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5278 new_bss->ifindex = ifidx;
5280 new_bss->next = drv->first_bss.next;
5281 drv->first_bss.next = new_bss;
5283 *drv_priv = new_bss;
5285 #endif /* HOSTAPD */
5291 static int wpa_driver_nl80211_if_remove(void *priv,
5292 enum wpa_driver_if_type type,
5295 struct i802_bss *bss = priv;
5296 struct wpa_driver_nl80211_data *drv = bss->drv;
5297 int ifindex = if_nametoindex(ifname);
5299 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5300 __func__, type, ifname, ifindex);
5303 nl80211_remove_iface(drv, ifindex);
5306 if (type != WPA_IF_AP_BSS)
5309 if (bss != &drv->first_bss) {
5310 struct i802_bss *tbss = &drv->first_bss;
5313 if (tbss->next != bss)
5316 tbss->next = bss->next;
5321 #endif /* HOSTAPD */
5327 static int cookie_handler(struct nl_msg *msg, void *arg)
5329 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5330 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5332 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5333 genlmsg_attrlen(gnlh, 0), NULL);
5334 if (tb[NL80211_ATTR_COOKIE])
5335 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5340 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5341 unsigned int freq, const u8 *buf,
5342 size_t buf_len, u64 *cookie_out)
5348 msg = nlmsg_alloc();
5352 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5353 NL80211_CMD_FRAME, 0);
5355 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5356 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5357 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5360 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5363 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5364 "(%s)", ret, strerror(-ret));
5365 goto nla_put_failure;
5367 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5368 "cookie 0x%llx", (long long unsigned int) cookie);
5371 *cookie_out = cookie;
5379 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5380 const u8 *dst, const u8 *src,
5382 const u8 *data, size_t data_len)
5384 struct i802_bss *bss = priv;
5385 struct wpa_driver_nl80211_data *drv = bss->drv;
5388 struct ieee80211_hdr *hdr;
5390 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5393 buf = os_zalloc(24 + data_len);
5396 os_memcpy(buf + 24, data, data_len);
5397 hdr = (struct ieee80211_hdr *) buf;
5398 hdr->frame_control =
5399 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5400 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5401 os_memcpy(hdr->addr2, src, ETH_ALEN);
5402 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5404 if (drv->nlmode == NL80211_IFTYPE_AP)
5405 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5407 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5408 &drv->send_action_cookie);
5415 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5416 unsigned int duration)
5418 struct i802_bss *bss = priv;
5419 struct wpa_driver_nl80211_data *drv = bss->drv;
5424 msg = nlmsg_alloc();
5428 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5429 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5432 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5433 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5436 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5438 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5439 "0x%llx for freq=%u MHz duration=%u",
5440 (long long unsigned int) cookie, freq, duration);
5441 drv->remain_on_chan_cookie = cookie;
5444 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5445 "(freq=%d duration=%u): %d (%s)",
5446 freq, duration, ret, strerror(-ret));
5452 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5454 struct i802_bss *bss = priv;
5455 struct wpa_driver_nl80211_data *drv = bss->drv;
5459 if (!drv->pending_remain_on_chan) {
5460 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5465 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5467 (long long unsigned int) drv->remain_on_chan_cookie);
5469 msg = nlmsg_alloc();
5473 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5474 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5476 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5477 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5479 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5482 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5483 "%d (%s)", ret, strerror(-ret));
5489 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5491 struct i802_bss *bss = priv;
5492 struct wpa_driver_nl80211_data *drv = bss->drv;
5494 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5495 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5496 "allowed in station mode (iftype=%d)",
5502 if (drv->nl_handle_preq) {
5503 eloop_unregister_read_sock(
5504 nl_socket_get_fd(drv->nl_handle_preq));
5505 nl_cache_free(drv->nl_cache_preq);
5506 nl80211_handle_destroy(drv->nl_handle_preq);
5507 drv->nl_handle_preq = NULL;
5512 if (drv->nl_handle_preq) {
5513 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5518 drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5519 if (drv->nl_handle_preq == NULL) {
5520 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5521 "netlink callbacks (preq)");
5525 if (genl_connect(drv->nl_handle_preq)) {
5526 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5527 "generic netlink (preq)");
5532 #ifdef CONFIG_LIBNL20
5533 if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5534 &drv->nl_cache_preq) < 0) {
5535 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5536 "netlink cache (preq)");
5539 #else /* CONFIG_LIBNL20 */
5540 drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5541 if (drv->nl_cache_preq == NULL) {
5542 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5543 "netlink cache (preq)");
5546 #endif /* CONFIG_LIBNL20 */
5548 if (nl80211_register_frame(drv, drv->nl_handle_preq,
5549 (WLAN_FC_TYPE_MGMT << 2) |
5550 (WLAN_FC_STYPE_PROBE_REQ << 4),
5555 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5556 wpa_driver_nl80211_event_receive, drv,
5557 drv->nl_handle_preq);
5562 nl_cache_free(drv->nl_cache_preq);
5564 nl80211_handle_destroy(drv->nl_handle_preq);
5565 drv->nl_handle_preq = NULL;
5571 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5572 int ifindex, int disabled)
5575 struct nlattr *bands, *band;
5578 msg = nlmsg_alloc();
5582 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5583 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5584 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5586 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5588 goto nla_put_failure;
5591 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5592 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5593 * rates. All 5 GHz rates are left enabled.
5595 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5597 goto nla_put_failure;
5598 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5599 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5600 nla_nest_end(msg, band);
5602 nla_nest_end(msg, bands);
5604 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5607 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5608 "(%s)", ret, strerror(-ret));
5619 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5621 struct i802_bss *bss = priv;
5622 struct wpa_driver_nl80211_data *drv = bss->drv;
5623 drv->disable_11b_rates = disabled;
5624 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5628 static int wpa_driver_nl80211_deinit_ap(void *priv)
5630 struct i802_bss *bss = priv;
5631 struct wpa_driver_nl80211_data *drv = bss->drv;
5632 if (drv->nlmode != NL80211_IFTYPE_AP)
5634 wpa_driver_nl80211_del_beacon(drv);
5635 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5639 static void wpa_driver_nl80211_resume(void *priv)
5641 struct i802_bss *bss = priv;
5642 struct wpa_driver_nl80211_data *drv = bss->drv;
5643 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5644 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5650 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5651 const u8 *ies, size_t ies_len)
5653 struct i802_bss *bss = priv;
5654 struct wpa_driver_nl80211_data *drv = bss->drv;
5658 u8 own_addr[ETH_ALEN];
5660 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5664 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5665 "action %d", action);
5670 * Action frame payload:
5671 * Category[1] = 6 (Fast BSS Transition)
5672 * Action[1] = 1 (Fast BSS Transition Request)
5678 data_len = 2 + 2 * ETH_ALEN + ies_len;
5679 data = os_malloc(data_len);
5683 *pos++ = 0x06; /* FT Action category */
5685 os_memcpy(pos, own_addr, ETH_ALEN);
5687 os_memcpy(pos, target_ap, ETH_ALEN);
5689 os_memcpy(pos, ies, ies_len);
5691 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5692 own_addr, drv->bssid,
5700 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5702 struct i802_bss *bss = priv;
5703 struct wpa_driver_nl80211_data *drv = bss->drv;
5704 struct nl_msg *msg, *cqm = NULL;
5706 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5707 "hysteresis=%d", threshold, hysteresis);
5709 msg = nlmsg_alloc();
5713 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5714 0, NL80211_CMD_SET_CQM, 0);
5716 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5718 cqm = nlmsg_alloc();
5722 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5723 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5724 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5726 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5738 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5741 struct i802_bss *bss = priv;
5742 struct wpa_driver_nl80211_data *drv = bss->drv;
5743 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5747 static int nl80211_set_intra_bss(void *priv, int enabled)
5749 struct i802_bss *bss = priv;
5750 struct wpa_driver_nl80211_data *drv = bss->drv;
5753 msg = nlmsg_alloc();
5757 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5758 NL80211_CMD_SET_BSS, 0);
5760 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5761 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5763 return send_and_recv_msgs(drv, msg, NULL, NULL);
5769 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5771 .desc = "Linux nl80211/cfg80211",
5772 .get_bssid = wpa_driver_nl80211_get_bssid,
5773 .get_ssid = wpa_driver_nl80211_get_ssid,
5774 .set_key = wpa_driver_nl80211_set_key,
5775 .scan2 = wpa_driver_nl80211_scan,
5776 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5777 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5778 .disassociate = wpa_driver_nl80211_disassociate,
5779 .authenticate = wpa_driver_nl80211_authenticate,
5780 .associate = wpa_driver_nl80211_associate,
5781 .init = wpa_driver_nl80211_init,
5782 .deinit = wpa_driver_nl80211_deinit,
5783 .get_capa = wpa_driver_nl80211_get_capa,
5784 .set_operstate = wpa_driver_nl80211_set_operstate,
5785 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5786 .set_country = wpa_driver_nl80211_set_country,
5787 .set_beacon = wpa_driver_nl80211_set_beacon,
5788 .if_add = wpa_driver_nl80211_if_add,
5789 .if_remove = wpa_driver_nl80211_if_remove,
5790 .send_mlme = wpa_driver_nl80211_send_mlme,
5791 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5792 .sta_add = wpa_driver_nl80211_sta_add,
5793 .sta_remove = wpa_driver_nl80211_sta_remove,
5794 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5795 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5797 .hapd_init = i802_init,
5798 .hapd_deinit = i802_deinit,
5799 .get_seqnum = i802_get_seqnum,
5800 .flush = i802_flush,
5801 .read_sta_data = i802_read_sta_data,
5802 .sta_deauth = i802_sta_deauth,
5803 .sta_disassoc = i802_sta_disassoc,
5804 .get_inact_sec = i802_get_inact_sec,
5805 .sta_clear_stats = i802_sta_clear_stats,
5806 .set_rts = i802_set_rts,
5807 .set_frag = i802_set_frag,
5808 .set_rate_sets = i802_set_rate_sets,
5809 .set_cts_protect = i802_set_cts_protect,
5810 .set_preamble = i802_set_preamble,
5811 .set_short_slot_time = i802_set_short_slot_time,
5812 .set_tx_queue_params = i802_set_tx_queue_params,
5813 .set_sta_vlan = i802_set_sta_vlan,
5814 .set_wds_sta = i802_set_wds_sta,
5815 #endif /* HOSTAPD */
5816 .set_freq = i802_set_freq,
5817 .send_action = wpa_driver_nl80211_send_action,
5818 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5819 .cancel_remain_on_channel =
5820 wpa_driver_nl80211_cancel_remain_on_channel,
5821 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5822 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5823 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5824 .resume = wpa_driver_nl80211_resume,
5825 .send_ft_action = nl80211_send_ft_action,
5826 .signal_monitor = nl80211_signal_monitor,
5827 .send_frame = nl80211_send_frame,
5828 .set_intra_bss = nl80211_set_intra_bss,