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);
1309 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1310 "(cmd=%d)", gnlh->cmd);
1318 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1322 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1324 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1326 cb = nl_cb_clone(drv->nl_cb);
1329 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1330 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1331 nl_recvmsgs(handle, cb);
1337 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1338 * @priv: driver_nl80211 private data
1339 * @alpha2_arg: country to which to switch to
1340 * Returns: 0 on success, -1 on failure
1342 * This asks nl80211 to set the regulatory domain for given
1343 * country ISO / IEC alpha2.
1345 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1347 struct i802_bss *bss = priv;
1348 struct wpa_driver_nl80211_data *drv = bss->drv;
1352 msg = nlmsg_alloc();
1356 alpha2[0] = alpha2_arg[0];
1357 alpha2[1] = alpha2_arg[1];
1360 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1361 0, NL80211_CMD_REQ_SET_REG, 0);
1363 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1364 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1373 struct wiphy_info_data {
1377 int connect_supported;
1381 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1383 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1384 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1385 struct wiphy_info_data *info = arg;
1387 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1388 genlmsg_attrlen(gnlh, 0), NULL);
1390 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1391 info->max_scan_ssids =
1392 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1394 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1395 struct nlattr *nl_mode;
1397 nla_for_each_nested(nl_mode,
1398 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1399 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1400 info->ap_supported = 1;
1406 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1407 struct nlattr *nl_cmd;
1410 nla_for_each_nested(nl_cmd,
1411 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1412 u32 cmd = nla_get_u32(nl_cmd);
1413 if (cmd == NL80211_CMD_AUTHENTICATE)
1414 info->auth_supported = 1;
1415 else if (cmd == NL80211_CMD_CONNECT)
1416 info->connect_supported = 1;
1424 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1425 struct wiphy_info_data *info)
1429 os_memset(info, 0, sizeof(*info));
1430 msg = nlmsg_alloc();
1434 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1435 0, NL80211_CMD_GET_WIPHY, 0);
1437 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1439 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1448 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1450 struct wiphy_info_data info;
1451 if (wpa_driver_nl80211_get_info(drv, &info))
1453 drv->has_capability = 1;
1454 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1455 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1456 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1457 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1458 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1459 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1460 WPA_DRIVER_CAPA_ENC_WEP104 |
1461 WPA_DRIVER_CAPA_ENC_TKIP |
1462 WPA_DRIVER_CAPA_ENC_CCMP;
1463 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1464 WPA_DRIVER_AUTH_SHARED |
1465 WPA_DRIVER_AUTH_LEAP;
1467 drv->capa.max_scan_ssids = info.max_scan_ssids;
1468 if (info.ap_supported)
1469 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1471 if (info.auth_supported)
1472 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1473 else if (!info.connect_supported) {
1474 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1475 "authentication/association or connect commands");
1479 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1480 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1481 drv->capa.max_remain_on_chan = 5000;
1485 #endif /* HOSTAPD */
1488 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1492 /* Initialize generic netlink and nl80211 */
1494 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1495 if (drv->nl_cb == NULL) {
1496 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1501 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1502 if (drv->nl_handle == NULL) {
1503 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1508 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1509 if (drv->nl_handle_event == NULL) {
1510 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1511 "callbacks (event)");
1515 if (genl_connect(drv->nl_handle)) {
1516 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1521 if (genl_connect(drv->nl_handle_event)) {
1522 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1527 #ifdef CONFIG_LIBNL20
1528 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1529 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1533 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1535 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1536 "netlink cache (event)");
1539 #else /* CONFIG_LIBNL20 */
1540 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1541 if (drv->nl_cache == NULL) {
1542 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1546 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1547 if (drv->nl_cache_event == NULL) {
1548 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1549 "netlink cache (event)");
1552 #endif /* CONFIG_LIBNL20 */
1554 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1555 if (drv->nl80211 == NULL) {
1556 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1561 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1563 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1565 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1566 "membership for scan events: %d (%s)",
1567 ret, strerror(-ret));
1571 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1573 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1575 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1576 "membership for mlme events: %d (%s)",
1577 ret, strerror(-ret));
1581 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1582 wpa_driver_nl80211_event_receive, drv,
1583 drv->nl_handle_event);
1588 nl_cache_free(drv->nl_cache_event);
1590 nl_cache_free(drv->nl_cache);
1592 nl80211_handle_destroy(drv->nl_handle_event);
1594 nl80211_handle_destroy(drv->nl_handle);
1596 nl_cb_put(drv->nl_cb);
1602 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1604 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1606 * This may be for any interface; use ifdown event to disable
1612 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1614 struct wpa_driver_nl80211_data *drv = ctx;
1615 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1616 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1617 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1618 "after rfkill unblock");
1621 /* rtnetlink ifup handler will report interface as enabled */
1626 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1627 * @ctx: context to be used when calling wpa_supplicant functions,
1628 * e.g., wpa_supplicant_event()
1629 * @ifname: interface name, e.g., wlan0
1630 * Returns: Pointer to private data, %NULL on failure
1632 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1634 struct wpa_driver_nl80211_data *drv;
1635 struct netlink_config *cfg;
1636 struct rfkill_config *rcfg;
1637 struct i802_bss *bss;
1639 drv = os_zalloc(sizeof(*drv));
1643 bss = &drv->first_bss;
1645 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1646 drv->monitor_ifidx = -1;
1647 drv->monitor_sock = -1;
1648 drv->ioctl_sock = -1;
1650 if (wpa_driver_nl80211_init_nl(drv)) {
1655 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1656 if (drv->ioctl_sock < 0) {
1657 perror("socket(PF_INET,SOCK_DGRAM)");
1661 cfg = os_zalloc(sizeof(*cfg));
1665 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1666 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1667 drv->netlink = netlink_init(cfg);
1668 if (drv->netlink == NULL) {
1673 rcfg = os_zalloc(sizeof(*rcfg));
1677 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1678 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1679 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1680 drv->rfkill = rfkill_init(rcfg);
1681 if (drv->rfkill == NULL) {
1682 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1686 if (wpa_driver_nl80211_finish_drv_init(drv))
1692 rfkill_deinit(drv->rfkill);
1693 netlink_deinit(drv->netlink);
1694 if (drv->ioctl_sock >= 0)
1695 close(drv->ioctl_sock);
1697 genl_family_put(drv->nl80211);
1698 nl_cache_free(drv->nl_cache);
1699 nl80211_handle_destroy(drv->nl_handle);
1700 nl_cb_put(drv->nl_cb);
1701 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1708 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1709 struct nl_handle *nl_handle,
1710 u16 type, const u8 *match, size_t match_len)
1715 msg = nlmsg_alloc();
1719 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1720 NL80211_CMD_REGISTER_ACTION, 0);
1722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1723 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1724 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1726 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1729 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1730 "failed (type=%u): ret=%d (%s)",
1731 type, ret, strerror(-ret));
1732 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1734 goto nla_put_failure;
1743 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1744 const u8 *match, size_t match_len)
1746 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1747 return nl80211_register_frame(drv, drv->nl_handle_event,
1748 type, match, match_len);
1752 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1755 /* GAS Initial Request */
1756 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1758 /* GAS Initial Response */
1759 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1761 /* GAS Comeback Request */
1762 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1764 /* GAS Comeback Response */
1765 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1767 /* P2P Public Action */
1768 if (nl80211_register_action_frame(drv,
1769 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1773 if (nl80211_register_action_frame(drv,
1774 (u8 *) "\x7f\x50\x6f\x9a\x09",
1777 #endif /* CONFIG_P2P */
1779 /* FT Action frames */
1780 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1783 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1784 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1790 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1792 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1797 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1799 struct i802_bss *bss = &drv->first_bss;
1800 int send_rfkill_event = 0;
1802 drv->ifindex = if_nametoindex(bss->ifname);
1803 drv->first_bss.ifindex = drv->ifindex;
1806 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1807 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1808 "use managed mode");
1811 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1812 if (rfkill_is_blocked(drv->rfkill)) {
1813 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1814 "interface '%s' due to rfkill",
1816 drv->if_disabled = 1;
1817 send_rfkill_event = 1;
1819 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1820 "interface '%s' UP", bss->ifname);
1825 if (wpa_driver_nl80211_capa(drv))
1828 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1829 1, IF_OPER_DORMANT);
1830 #endif /* HOSTAPD */
1832 if (nl80211_register_action_frames(drv) < 0) {
1833 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1834 "frame processing - ignore for now");
1836 * Older kernel versions did not support this, so ignore the
1837 * error for now. Some functionality may not be available
1842 if (send_rfkill_event) {
1843 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1851 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1855 msg = nlmsg_alloc();
1859 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1860 0, NL80211_CMD_DEL_BEACON, 0);
1861 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1863 return send_and_recv_msgs(drv, msg, NULL, NULL);
1870 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1871 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1873 * Shut down driver interface and processing of driver events. Free
1874 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1876 static void wpa_driver_nl80211_deinit(void *priv)
1878 struct i802_bss *bss = priv;
1879 struct wpa_driver_nl80211_data *drv = bss->drv;
1881 if (drv->nl_handle_preq)
1882 wpa_driver_nl80211_probe_req_report(bss, 0);
1883 if (drv->added_if_into_bridge) {
1884 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1886 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1887 "interface %s from bridge %s: %s",
1888 bss->ifname, drv->brname, strerror(errno));
1890 if (drv->added_bridge) {
1891 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1892 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1894 drv->brname, strerror(errno));
1897 nl80211_remove_monitor_interface(drv);
1899 if (drv->nlmode == NL80211_IFTYPE_AP)
1900 wpa_driver_nl80211_del_beacon(drv);
1903 if (drv->last_freq_ht) {
1904 /* Clear HT flags from the driver */
1905 struct hostapd_freq_params freq;
1906 os_memset(&freq, 0, sizeof(freq));
1907 freq.freq = drv->last_freq;
1908 i802_set_freq(priv, &freq);
1911 if (drv->eapol_sock >= 0) {
1912 eloop_unregister_read_sock(drv->eapol_sock);
1913 close(drv->eapol_sock);
1916 if (drv->if_indices != drv->default_if_indices)
1917 os_free(drv->if_indices);
1918 #endif /* HOSTAPD */
1920 if (drv->disable_11b_rates)
1921 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1923 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1924 netlink_deinit(drv->netlink);
1925 rfkill_deinit(drv->rfkill);
1927 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1929 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1930 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1932 if (drv->ioctl_sock >= 0)
1933 close(drv->ioctl_sock);
1935 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1936 genl_family_put(drv->nl80211);
1937 nl_cache_free(drv->nl_cache);
1938 nl_cache_free(drv->nl_cache_event);
1939 nl80211_handle_destroy(drv->nl_handle);
1940 nl80211_handle_destroy(drv->nl_handle_event);
1941 nl_cb_put(drv->nl_cb);
1943 os_free(drv->filter_ssids);
1950 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1951 * @eloop_ctx: Driver private data
1952 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1954 * This function can be used as registered timeout when starting a scan to
1955 * generate a scan completed event if the driver does not report this.
1957 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1959 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1960 if (drv->ap_scan_as_station) {
1961 wpa_driver_nl80211_set_mode(&drv->first_bss,
1963 drv->ap_scan_as_station = 0;
1965 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1966 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1971 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1972 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1973 * @params: Scan parameters
1974 * Returns: 0 on success, -1 on failure
1976 static int wpa_driver_nl80211_scan(void *priv,
1977 struct wpa_driver_scan_params *params)
1979 struct i802_bss *bss = priv;
1980 struct wpa_driver_nl80211_data *drv = bss->drv;
1981 int ret = 0, timeout;
1982 struct nl_msg *msg, *ssids, *freqs;
1985 msg = nlmsg_alloc();
1986 ssids = nlmsg_alloc();
1987 freqs = nlmsg_alloc();
1988 if (!msg || !ssids || !freqs) {
1995 os_free(drv->filter_ssids);
1996 drv->filter_ssids = params->filter_ssids;
1997 params->filter_ssids = NULL;
1998 drv->num_filter_ssids = params->num_filter_ssids;
2000 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2001 NL80211_CMD_TRIGGER_SCAN, 0);
2003 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2005 for (i = 0; i < params->num_ssids; i++) {
2006 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2007 params->ssids[i].ssid,
2008 params->ssids[i].ssid_len);
2009 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2010 params->ssids[i].ssid);
2012 if (params->num_ssids)
2013 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2015 if (params->extra_ies) {
2016 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2017 params->extra_ies, params->extra_ies_len);
2018 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2022 if (params->freqs) {
2023 for (i = 0; params->freqs[i]; i++) {
2024 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2025 "MHz", params->freqs[i]);
2026 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2028 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2031 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2034 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2035 "(%s)", ret, strerror(-ret));
2037 if (drv->nlmode == NL80211_IFTYPE_AP) {
2039 * mac80211 does not allow scan requests in AP mode, so
2040 * try to do this in station mode.
2042 if (wpa_driver_nl80211_set_mode(bss,
2043 IEEE80211_MODE_INFRA))
2044 goto nla_put_failure;
2046 if (wpa_driver_nl80211_scan(drv, params)) {
2047 wpa_driver_nl80211_set_mode(bss,
2049 goto nla_put_failure;
2052 /* Restore AP mode when processing scan results */
2053 drv->ap_scan_as_station = 1;
2056 goto nla_put_failure;
2058 goto nla_put_failure;
2059 #endif /* HOSTAPD */
2062 /* Not all drivers generate "scan completed" wireless event, so try to
2063 * read results after a timeout. */
2065 if (drv->scan_complete_events) {
2067 * The driver seems to deliver events to notify when scan is
2068 * complete, so use longer timeout to avoid race conditions
2069 * with scanning and following association request.
2073 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2074 "seconds", ret, timeout);
2075 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2076 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2087 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2089 const u8 *end, *pos;
2095 end = ies + ies_len;
2097 while (pos + 1 < end) {
2098 if (pos + 2 + pos[1] > end)
2109 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2110 const u8 *ie, size_t ie_len)
2115 if (drv->filter_ssids == NULL)
2118 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2122 for (i = 0; i < drv->num_filter_ssids; i++) {
2123 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2124 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2133 struct nl80211_bss_info_arg {
2134 struct wpa_driver_nl80211_data *drv;
2135 struct wpa_scan_results *res;
2138 static int bss_info_handler(struct nl_msg *msg, void *arg)
2140 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2141 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2142 struct nlattr *bss[NL80211_BSS_MAX + 1];
2143 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2144 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2145 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2146 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2147 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2148 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2149 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2150 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2151 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2152 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2153 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2154 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2156 struct nl80211_bss_info_arg *_arg = arg;
2157 struct wpa_scan_results *res = _arg->res;
2158 struct wpa_scan_res **tmp;
2159 struct wpa_scan_res *r;
2160 const u8 *ie, *beacon_ie;
2161 size_t ie_len, beacon_ie_len;
2164 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2165 genlmsg_attrlen(gnlh, 0), NULL);
2166 if (!tb[NL80211_ATTR_BSS])
2168 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2171 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2172 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2173 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2178 if (bss[NL80211_BSS_BEACON_IES]) {
2179 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2180 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2186 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2187 ie ? ie_len : beacon_ie_len))
2190 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2193 if (bss[NL80211_BSS_BSSID])
2194 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2196 if (bss[NL80211_BSS_FREQUENCY])
2197 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2198 if (bss[NL80211_BSS_BEACON_INTERVAL])
2199 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2200 if (bss[NL80211_BSS_CAPABILITY])
2201 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2202 r->flags |= WPA_SCAN_NOISE_INVALID;
2203 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2204 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2205 r->level /= 100; /* mBm to dBm */
2206 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2207 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2208 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2209 r->flags |= WPA_SCAN_LEVEL_INVALID;
2211 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2212 if (bss[NL80211_BSS_TSF])
2213 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2214 if (bss[NL80211_BSS_SEEN_MS_AGO])
2215 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2217 pos = (u8 *) (r + 1);
2219 os_memcpy(pos, ie, ie_len);
2222 r->beacon_ie_len = beacon_ie_len;
2224 os_memcpy(pos, beacon_ie, beacon_ie_len);
2226 if (bss[NL80211_BSS_STATUS]) {
2227 enum nl80211_bss_status status;
2228 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2230 case NL80211_BSS_STATUS_AUTHENTICATED:
2231 r->flags |= WPA_SCAN_AUTHENTICATED;
2233 case NL80211_BSS_STATUS_ASSOCIATED:
2234 r->flags |= WPA_SCAN_ASSOCIATED;
2241 tmp = os_realloc(res->res,
2242 (res->num + 1) * sizeof(struct wpa_scan_res *));
2247 tmp[res->num++] = r;
2254 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2257 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2258 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2259 "mismatch (" MACSTR ")", MAC2STR(addr));
2260 wpa_driver_nl80211_mlme(drv, addr,
2261 NL80211_CMD_DEAUTHENTICATE,
2262 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2267 static void wpa_driver_nl80211_check_bss_status(
2268 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2272 for (i = 0; i < res->num; i++) {
2273 struct wpa_scan_res *r = res->res[i];
2274 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2275 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2276 "indicates BSS status with " MACSTR
2277 " as authenticated",
2279 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2280 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2281 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2283 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2284 " in local state (auth=" MACSTR
2285 " assoc=" MACSTR ")",
2286 MAC2STR(drv->auth_bssid),
2287 MAC2STR(drv->bssid));
2288 clear_state_mismatch(drv, r->bssid);
2292 if (r->flags & WPA_SCAN_ASSOCIATED) {
2293 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2294 "indicate BSS status with " MACSTR
2297 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2299 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2300 "(not associated) does not match "
2302 clear_state_mismatch(drv, r->bssid);
2303 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2304 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2306 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2307 "(associated with " MACSTR ") does "
2308 "not match with BSS state",
2309 MAC2STR(drv->bssid));
2310 clear_state_mismatch(drv, r->bssid);
2311 clear_state_mismatch(drv, drv->bssid);
2318 static void wpa_scan_results_free(struct wpa_scan_results *res)
2325 for (i = 0; i < res->num; i++)
2326 os_free(res->res[i]);
2332 static struct wpa_scan_results *
2333 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2336 struct wpa_scan_results *res;
2338 struct nl80211_bss_info_arg arg;
2340 res = os_zalloc(sizeof(*res));
2343 msg = nlmsg_alloc();
2345 goto nla_put_failure;
2347 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2348 NL80211_CMD_GET_SCAN, 0);
2349 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2353 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2356 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2357 (unsigned long) res->num);
2360 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2361 "(%s)", ret, strerror(-ret));
2364 wpa_scan_results_free(res);
2370 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2371 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2372 * Returns: Scan results on success, -1 on failure
2374 static struct wpa_scan_results *
2375 wpa_driver_nl80211_get_scan_results(void *priv)
2377 struct i802_bss *bss = priv;
2378 struct wpa_driver_nl80211_data *drv = bss->drv;
2379 struct wpa_scan_results *res;
2381 res = nl80211_get_scan_results(drv);
2383 wpa_driver_nl80211_check_bss_status(drv, res);
2388 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2390 struct wpa_scan_results *res;
2393 res = nl80211_get_scan_results(drv);
2395 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2399 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2400 for (i = 0; i < res->num; i++) {
2401 struct wpa_scan_res *r = res->res[i];
2402 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2403 (int) i, (int) res->num, MAC2STR(r->bssid),
2404 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2405 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2408 wpa_scan_results_free(res);
2412 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2413 enum wpa_alg alg, const u8 *addr,
2414 int key_idx, int set_tx,
2415 const u8 *seq, size_t seq_len,
2416 const u8 *key, size_t key_len)
2418 struct i802_bss *bss = priv;
2419 struct wpa_driver_nl80211_data *drv = bss->drv;
2420 int ifindex = if_nametoindex(ifname);
2424 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2425 "set_tx=%d seq_len=%lu key_len=%lu",
2426 __func__, ifindex, alg, addr, key_idx, set_tx,
2427 (unsigned long) seq_len, (unsigned long) key_len);
2429 msg = nlmsg_alloc();
2433 if (alg == WPA_ALG_NONE) {
2434 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2435 0, NL80211_CMD_DEL_KEY, 0);
2437 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2438 0, NL80211_CMD_NEW_KEY, 0);
2439 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2443 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2444 WLAN_CIPHER_SUITE_WEP40);
2446 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2447 WLAN_CIPHER_SUITE_WEP104);
2450 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2451 WLAN_CIPHER_SUITE_TKIP);
2454 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2455 WLAN_CIPHER_SUITE_CCMP);
2458 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2459 WLAN_CIPHER_SUITE_AES_CMAC);
2462 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2463 "algorithm %d", __func__, alg);
2470 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2472 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2474 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2475 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2477 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2478 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2480 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2481 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2484 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2485 ret, strerror(-ret));
2488 * If we failed or don't need to set the default TX key (below),
2491 if (ret || !set_tx || alg == WPA_ALG_NONE)
2497 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2499 #endif /* HOSTAPD */
2501 msg = nlmsg_alloc();
2505 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2506 0, NL80211_CMD_SET_KEY, 0);
2507 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2508 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2509 if (alg == WPA_ALG_IGTK)
2510 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2512 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2514 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2518 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2519 "err=%d %s)", ret, strerror(-ret));
2527 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2528 int key_idx, int defkey,
2529 const u8 *seq, size_t seq_len,
2530 const u8 *key, size_t key_len)
2532 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2536 if (defkey && alg == WPA_ALG_IGTK)
2537 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2539 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2541 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2546 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2547 WLAN_CIPHER_SUITE_WEP40);
2549 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2550 WLAN_CIPHER_SUITE_WEP104);
2553 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2556 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2559 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2560 WLAN_CIPHER_SUITE_AES_CMAC);
2563 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2564 "algorithm %d", __func__, alg);
2569 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2571 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2573 nla_nest_end(msg, key_attr);
2581 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2585 struct nlattr *nl_keys, *nl_key;
2587 for (i = 0; i < 4; i++) {
2588 if (!params->wep_key[i])
2596 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2598 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2600 goto nla_put_failure;
2602 for (i = 0; i < 4; i++) {
2603 if (!params->wep_key[i])
2606 nl_key = nla_nest_start(msg, i);
2608 goto nla_put_failure;
2610 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2611 params->wep_key[i]);
2612 if (params->wep_key_len[i] == 5)
2613 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2614 WLAN_CIPHER_SUITE_WEP40);
2616 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2617 WLAN_CIPHER_SUITE_WEP104);
2619 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2621 if (i == params->wep_tx_keyidx)
2622 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2624 nla_nest_end(msg, nl_key);
2626 nla_nest_end(msg, nl_keys);
2635 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2636 const u8 *addr, int cmd, u16 reason_code,
2637 int local_state_change)
2642 msg = nlmsg_alloc();
2646 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2648 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2649 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2650 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2651 if (local_state_change)
2652 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2654 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2657 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2658 "(%s)", ret, strerror(-ret));
2659 goto nla_put_failure;
2669 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2670 const u8 *addr, int reason_code)
2672 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2673 __func__, MAC2STR(addr), reason_code);
2674 drv->associated = 0;
2675 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2680 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2683 struct i802_bss *bss = priv;
2684 struct wpa_driver_nl80211_data *drv = bss->drv;
2685 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2686 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2687 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2688 __func__, MAC2STR(addr), reason_code);
2689 drv->associated = 0;
2690 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2695 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2698 struct i802_bss *bss = priv;
2699 struct wpa_driver_nl80211_data *drv = bss->drv;
2700 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2701 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2702 wpa_printf(MSG_DEBUG, "%s", __func__);
2703 drv->associated = 0;
2704 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2709 static int wpa_driver_nl80211_authenticate(
2710 void *priv, struct wpa_driver_auth_params *params)
2712 struct i802_bss *bss = priv;
2713 struct wpa_driver_nl80211_data *drv = bss->drv;
2716 enum nl80211_auth_type type;
2719 drv->associated = 0;
2720 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2721 /* FIX: IBSS mode */
2722 if (drv->nlmode != NL80211_IFTYPE_STATION)
2723 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2725 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2729 msg = nlmsg_alloc();
2733 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2736 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2737 NL80211_CMD_AUTHENTICATE, 0);
2739 for (i = 0; i < 4; i++) {
2740 if (!params->wep_key[i])
2742 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2744 i == params->wep_tx_keyidx, NULL, 0,
2746 params->wep_key_len[i]);
2747 if (params->wep_tx_keyidx != i)
2749 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2750 params->wep_key[i], params->wep_key_len[i])) {
2756 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2757 if (params->bssid) {
2758 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2759 MAC2STR(params->bssid));
2760 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2763 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2764 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2767 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2768 params->ssid, params->ssid_len);
2769 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2772 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2774 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2775 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2776 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2777 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2778 type = NL80211_AUTHTYPE_SHARED_KEY;
2779 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2780 type = NL80211_AUTHTYPE_NETWORK_EAP;
2781 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2782 type = NL80211_AUTHTYPE_FT;
2784 goto nla_put_failure;
2785 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2786 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2787 if (params->local_state_change) {
2788 wpa_printf(MSG_DEBUG, " * Local state change only");
2789 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2792 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2795 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2796 "(%s)", ret, strerror(-ret));
2798 if (ret == -EALREADY && count == 1 && params->bssid &&
2799 !params->local_state_change) {
2801 * mac80211 does not currently accept new
2802 * authentication if we are already authenticated. As a
2803 * workaround, force deauthentication and try again.
2805 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2806 "after forced deauthentication");
2807 wpa_driver_nl80211_deauthenticate(
2809 WLAN_REASON_PREV_AUTH_NOT_VALID);
2813 goto nla_put_failure;
2816 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2825 struct phy_info_arg {
2827 struct hostapd_hw_modes *modes;
2830 static int phy_info_handler(struct nl_msg *msg, void *arg)
2832 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2833 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2834 struct phy_info_arg *phy_info = arg;
2836 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2838 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2839 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2840 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2841 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2842 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2843 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2844 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2845 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2848 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2849 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2850 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2851 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2854 struct nlattr *nl_band;
2855 struct nlattr *nl_freq;
2856 struct nlattr *nl_rate;
2857 int rem_band, rem_freq, rem_rate;
2858 struct hostapd_hw_modes *mode;
2859 int idx, mode_is_set;
2861 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2862 genlmsg_attrlen(gnlh, 0), NULL);
2864 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2867 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2868 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2871 phy_info->modes = mode;
2875 mode = &phy_info->modes[*(phy_info->num_modes)];
2876 memset(mode, 0, sizeof(*mode));
2877 *(phy_info->num_modes) += 1;
2879 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2880 nla_len(nl_band), NULL);
2882 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2883 mode->ht_capab = nla_get_u16(
2884 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2887 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2888 mode->a_mpdu_params |= nla_get_u8(
2889 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2893 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2894 mode->a_mpdu_params |= nla_get_u8(
2895 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2899 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2900 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2902 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2903 os_memcpy(mode->mcs_set, mcs, 16);
2906 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2907 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2908 nla_len(nl_freq), freq_policy);
2909 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2911 mode->num_channels++;
2914 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2915 if (!mode->channels)
2920 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2921 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2922 nla_len(nl_freq), freq_policy);
2923 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2926 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2927 mode->channels[idx].flag = 0;
2930 /* crude heuristic */
2931 if (mode->channels[idx].freq < 4000)
2932 mode->mode = HOSTAPD_MODE_IEEE80211B;
2934 mode->mode = HOSTAPD_MODE_IEEE80211A;
2938 /* crude heuristic */
2939 if (mode->channels[idx].freq < 4000)
2940 if (mode->channels[idx].freq == 2484)
2941 mode->channels[idx].chan = 14;
2943 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2945 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2947 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2948 mode->channels[idx].flag |=
2949 HOSTAPD_CHAN_DISABLED;
2950 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2951 mode->channels[idx].flag |=
2952 HOSTAPD_CHAN_PASSIVE_SCAN;
2953 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2954 mode->channels[idx].flag |=
2955 HOSTAPD_CHAN_NO_IBSS;
2956 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2957 mode->channels[idx].flag |=
2960 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2961 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2962 mode->channels[idx].max_tx_power =
2963 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2968 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2969 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2970 nla_len(nl_rate), rate_policy);
2971 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2976 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2982 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2983 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2984 nla_len(nl_rate), rate_policy);
2985 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2987 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2989 /* crude heuristic */
2990 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2991 mode->rates[idx] > 200)
2992 mode->mode = HOSTAPD_MODE_IEEE80211G;
3001 static struct hostapd_hw_modes *
3002 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3005 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3006 int i, mode11g_idx = -1;
3008 /* If only 802.11g mode is included, use it to construct matching
3009 * 802.11b mode data. */
3011 for (m = 0; m < *num_modes; m++) {
3012 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3013 return modes; /* 802.11b already included */
3014 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3018 if (mode11g_idx < 0)
3019 return modes; /* 2.4 GHz band not supported at all */
3021 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3023 return modes; /* Could not add 802.11b mode */
3025 mode = &nmodes[*num_modes];
3026 os_memset(mode, 0, sizeof(*mode));
3030 mode->mode = HOSTAPD_MODE_IEEE80211B;
3032 mode11g = &modes[mode11g_idx];
3033 mode->num_channels = mode11g->num_channels;
3034 mode->channels = os_malloc(mode11g->num_channels *
3035 sizeof(struct hostapd_channel_data));
3036 if (mode->channels == NULL) {
3038 return modes; /* Could not add 802.11b mode */
3040 os_memcpy(mode->channels, mode11g->channels,
3041 mode11g->num_channels * sizeof(struct hostapd_channel_data));
3043 mode->num_rates = 0;
3044 mode->rates = os_malloc(4 * sizeof(int));
3045 if (mode->rates == NULL) {
3046 os_free(mode->channels);
3048 return modes; /* Could not add 802.11b mode */
3051 for (i = 0; i < mode11g->num_rates; i++) {
3052 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3053 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3055 mode->rates[mode->num_rates] = mode11g->rates[i];
3057 if (mode->num_rates == 4)
3061 if (mode->num_rates == 0) {
3062 os_free(mode->channels);
3063 os_free(mode->rates);
3065 return modes; /* No 802.11b rates */
3068 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3075 static struct hostapd_hw_modes *
3076 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3078 struct i802_bss *bss = priv;
3079 struct wpa_driver_nl80211_data *drv = bss->drv;
3081 struct phy_info_arg result = {
3082 .num_modes = num_modes,
3089 msg = nlmsg_alloc();
3093 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3094 0, NL80211_CMD_GET_WIPHY, 0);
3096 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3098 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
3099 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3105 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3106 const void *data, size_t len,
3110 0x00, 0x00, /* radiotap version */
3111 0x0e, 0x00, /* radiotap length */
3112 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3113 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3115 0x00, 0x00, /* RX and TX flags to indicate that */
3116 0x00, 0x00, /* this is the injected frame directly */
3118 struct iovec iov[2] = {
3120 .iov_base = &rtap_hdr,
3121 .iov_len = sizeof(rtap_hdr),
3124 .iov_base = (void *) data,
3128 struct msghdr msg = {
3133 .msg_control = NULL,
3134 .msg_controllen = 0,
3139 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3141 return sendmsg(drv->monitor_sock, &msg, 0);
3145 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3148 struct i802_bss *bss = priv;
3149 struct wpa_driver_nl80211_data *drv = bss->drv;
3150 struct ieee80211_mgmt *mgmt;
3154 mgmt = (struct ieee80211_mgmt *) data;
3155 fc = le_to_host16(mgmt->frame_control);
3157 if (drv->nlmode == NL80211_IFTYPE_STATION &&
3158 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3159 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3161 * The use of last_mgmt_freq is a bit of a hack,
3162 * but it works due to the single-threaded nature
3163 * of wpa_supplicant.
3165 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3166 data, data_len, NULL);
3169 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3170 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3172 * Only one of the authentication frame types is encrypted.
3173 * In order for static WEP encryption to work properly (i.e.,
3174 * to not encrypt the frame), we need to tell mac80211 about
3175 * the frames that must not be encrypted.
3177 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3178 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3179 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3183 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3187 static int wpa_driver_nl80211_set_beacon(void *priv,
3188 const u8 *head, size_t head_len,
3189 const u8 *tail, size_t tail_len,
3190 int dtim_period, int beacon_int)
3192 struct i802_bss *bss = priv;
3193 struct wpa_driver_nl80211_data *drv = bss->drv;
3195 u8 cmd = NL80211_CMD_NEW_BEACON;
3198 int ifindex = if_nametoindex(bss->ifname);
3200 beacon_set = bss->beacon_set;
3202 msg = nlmsg_alloc();
3206 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3209 cmd = NL80211_CMD_SET_BEACON;
3211 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3213 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3214 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3215 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3216 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3217 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3219 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3221 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3222 ret, strerror(-ret));
3224 bss->beacon_set = 1;
3232 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3233 int freq, int ht_enabled,
3234 int sec_channel_offset)
3239 msg = nlmsg_alloc();
3243 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3244 NL80211_CMD_SET_WIPHY, 0);
3246 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3247 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3249 switch (sec_channel_offset) {
3251 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3252 NL80211_CHAN_HT40MINUS);
3255 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3256 NL80211_CHAN_HT40PLUS);
3259 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3265 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3268 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3269 "%d (%s)", freq, ret, strerror(-ret));
3275 static int wpa_driver_nl80211_sta_add(void *priv,
3276 struct hostapd_sta_add_params *params)
3278 struct i802_bss *bss = priv;
3279 struct wpa_driver_nl80211_data *drv = bss->drv;
3283 msg = nlmsg_alloc();
3287 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3288 0, NL80211_CMD_NEW_STATION, 0);
3290 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3291 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3292 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3293 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3294 params->supp_rates);
3295 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3296 params->listen_interval);
3297 if (params->ht_capabilities) {
3298 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3299 sizeof(*params->ht_capabilities),
3300 params->ht_capabilities);
3303 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3305 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3306 "result: %d (%s)", ret, strerror(-ret));
3314 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3316 struct i802_bss *bss = priv;
3317 struct wpa_driver_nl80211_data *drv = bss->drv;
3321 msg = nlmsg_alloc();
3325 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3326 0, NL80211_CMD_DEL_STATION, 0);
3328 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3329 if_nametoindex(bss->ifname));
3330 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3332 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3341 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3346 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3349 /* stop listening for EAPOL on this interface */
3350 del_ifidx(drv, ifidx);
3351 #endif /* HOSTAPD */
3353 msg = nlmsg_alloc();
3355 goto nla_put_failure;
3357 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3358 0, NL80211_CMD_DEL_INTERFACE, 0);
3359 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3361 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3364 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3368 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3370 enum nl80211_iftype iftype,
3371 const u8 *addr, int wds)
3373 struct nl_msg *msg, *flags = NULL;
3377 msg = nlmsg_alloc();
3381 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3382 0, NL80211_CMD_NEW_INTERFACE, 0);
3383 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3384 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3385 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3387 if (iftype == NL80211_IFTYPE_MONITOR) {
3390 flags = nlmsg_alloc();
3392 goto nla_put_failure;
3394 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3396 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3401 goto nla_put_failure;
3403 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3406 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3409 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3410 ifname, ret, strerror(-ret));
3414 ifidx = if_nametoindex(ifname);
3415 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3422 /* start listening for EAPOL on this interface */
3423 add_ifidx(drv, ifidx);
3424 #endif /* HOSTAPD */
3426 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3427 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3428 nl80211_remove_iface(drv, ifidx);
3436 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3437 const char *ifname, enum nl80211_iftype iftype,
3438 const u8 *addr, int wds)
3442 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3444 /* if error occured and interface exists already */
3445 if (ret == -ENFILE && if_nametoindex(ifname)) {
3446 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3448 /* Try to remove the interface that was already there. */
3449 nl80211_remove_iface(drv, if_nametoindex(ifname));
3451 /* Try to create the interface again */
3452 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3456 if (ret >= 0 && drv->disable_11b_rates)
3457 nl80211_disable_11b_rates(drv, ret, 1);
3463 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3465 struct ieee80211_hdr *hdr;
3467 union wpa_event_data event;
3469 hdr = (struct ieee80211_hdr *) buf;
3470 fc = le_to_host16(hdr->frame_control);
3472 os_memset(&event, 0, sizeof(event));
3473 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3474 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3475 event.tx_status.dst = hdr->addr1;
3476 event.tx_status.data = buf;
3477 event.tx_status.data_len = len;
3478 event.tx_status.ack = ok;
3479 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3483 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3484 u8 *buf, size_t len)
3486 union wpa_event_data event;
3487 os_memset(&event, 0, sizeof(event));
3488 event.rx_from_unknown.frame = buf;
3489 event.rx_from_unknown.len = len;
3490 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3494 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3495 u8 *buf, size_t len, int datarate, int ssi_signal)
3497 struct ieee80211_hdr *hdr;
3499 union wpa_event_data event;
3501 hdr = (struct ieee80211_hdr *) buf;
3502 fc = le_to_host16(hdr->frame_control);
3504 switch (WLAN_FC_GET_TYPE(fc)) {
3505 case WLAN_FC_TYPE_MGMT:
3506 os_memset(&event, 0, sizeof(event));
3507 event.rx_mgmt.frame = buf;
3508 event.rx_mgmt.frame_len = len;
3509 event.rx_mgmt.datarate = datarate;
3510 event.rx_mgmt.ssi_signal = ssi_signal;
3511 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3513 case WLAN_FC_TYPE_CTRL:
3514 /* can only get here with PS-Poll frames */
3515 wpa_printf(MSG_DEBUG, "CTRL");
3516 from_unknown_sta(drv, buf, len);
3518 case WLAN_FC_TYPE_DATA:
3519 from_unknown_sta(drv, buf, len);
3525 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3527 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3529 unsigned char buf[3000];
3530 struct ieee80211_radiotap_iterator iter;
3532 int datarate = 0, ssi_signal = 0;
3533 int injected = 0, failed = 0, rxflags = 0;
3535 len = recv(sock, buf, sizeof(buf), 0);
3541 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3542 printf("received invalid radiotap frame\n");
3547 ret = ieee80211_radiotap_iterator_next(&iter);
3551 printf("received invalid radiotap frame (%d)\n", ret);
3554 switch (iter.this_arg_index) {
3555 case IEEE80211_RADIOTAP_FLAGS:
3556 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3559 case IEEE80211_RADIOTAP_RX_FLAGS:
3562 case IEEE80211_RADIOTAP_TX_FLAGS:
3564 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3565 IEEE80211_RADIOTAP_F_TX_FAIL;
3567 case IEEE80211_RADIOTAP_DATA_RETRIES:
3569 case IEEE80211_RADIOTAP_CHANNEL:
3570 /* TODO: convert from freq/flags to channel number */
3572 case IEEE80211_RADIOTAP_RATE:
3573 datarate = *iter.this_arg * 5;
3575 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3576 ssi_signal = *iter.this_arg;
3581 if (rxflags && injected)
3585 handle_frame(drv, buf + iter.max_length,
3586 len - iter.max_length, datarate, ssi_signal);
3588 handle_tx_callback(drv->ctx, buf + iter.max_length,
3589 len - iter.max_length, !failed);
3594 * we post-process the filter code later and rewrite
3595 * this to the offset to the last instruction
3600 static struct sock_filter msock_filter_insns[] = {
3602 * do a little-endian load of the radiotap length field
3604 /* load lower byte into A */
3605 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3606 /* put it into X (== index register) */
3607 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3608 /* load upper byte into A */
3609 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3610 /* left-shift it by 8 */
3611 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3613 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3614 /* put result into X */
3615 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3618 * Allow management frames through, this also gives us those
3619 * management frames that we sent ourselves with status
3621 /* load the lower byte of the IEEE 802.11 frame control field */
3622 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3623 /* mask off frame type and version */
3624 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3625 /* accept frame if it's both 0, fall through otherwise */
3626 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3629 * TODO: add a bit to radiotap RX flags that indicates
3630 * that the sending station is not associated, then
3631 * add a filter here that filters on our DA and that flag
3632 * to allow us to deauth frames to that bad station.
3634 * Not a regression -- we didn't do it before either.
3639 * drop non-data frames
3641 /* load the lower byte of the frame control field */
3642 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3643 /* mask off QoS bit */
3644 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3645 /* drop non-data frames */
3646 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3648 /* load the upper byte of the frame control field */
3649 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3650 /* mask off toDS/fromDS */
3651 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3652 /* accept WDS frames */
3653 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3656 * add header length to index
3658 /* load the lower byte of the frame control field */
3659 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3660 /* mask off QoS bit */
3661 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3662 /* right shift it by 6 to give 0 or 2 */
3663 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3664 /* add data frame header length */
3665 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3666 /* add index, was start of 802.11 header */
3667 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3668 /* move to index, now start of LL header */
3669 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3672 * Accept empty data frames, we use those for
3675 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3676 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3679 * Accept EAPOL frames
3681 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3682 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3683 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3684 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3686 /* keep these last two statements or change the code below */
3687 /* return 0 == "DROP" */
3688 BPF_STMT(BPF_RET | BPF_K, 0),
3689 /* return ~0 == "keep all" */
3690 BPF_STMT(BPF_RET | BPF_K, ~0),
3693 static struct sock_fprog msock_filter = {
3694 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3695 .filter = msock_filter_insns,
3699 static int add_monitor_filter(int s)
3703 /* rewrite all PASS/FAIL jump offsets */
3704 for (idx = 0; idx < msock_filter.len; idx++) {
3705 struct sock_filter *insn = &msock_filter_insns[idx];
3707 if (BPF_CLASS(insn->code) == BPF_JMP) {
3708 if (insn->code == (BPF_JMP|BPF_JA)) {
3709 if (insn->k == PASS)
3710 insn->k = msock_filter.len - idx - 2;
3711 else if (insn->k == FAIL)
3712 insn->k = msock_filter.len - idx - 3;
3715 if (insn->jt == PASS)
3716 insn->jt = msock_filter.len - idx - 2;
3717 else if (insn->jt == FAIL)
3718 insn->jt = msock_filter.len - idx - 3;
3720 if (insn->jf == PASS)
3721 insn->jf = msock_filter.len - idx - 2;
3722 else if (insn->jf == FAIL)
3723 insn->jf = msock_filter.len - idx - 3;
3727 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3728 &msock_filter, sizeof(msock_filter))) {
3729 perror("SO_ATTACH_FILTER");
3737 static void nl80211_remove_monitor_interface(
3738 struct wpa_driver_nl80211_data *drv)
3740 if (drv->monitor_ifidx >= 0) {
3741 nl80211_remove_iface(drv, drv->monitor_ifidx);
3742 drv->monitor_ifidx = -1;
3744 if (drv->monitor_sock >= 0) {
3745 eloop_unregister_read_sock(drv->monitor_sock);
3746 close(drv->monitor_sock);
3747 drv->monitor_sock = -1;
3753 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3756 struct sockaddr_ll ll;
3760 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3761 buf[IFNAMSIZ - 1] = '\0';
3763 drv->monitor_ifidx =
3764 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3767 if (drv->monitor_ifidx < 0)
3770 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3773 memset(&ll, 0, sizeof(ll));
3774 ll.sll_family = AF_PACKET;
3775 ll.sll_ifindex = drv->monitor_ifidx;
3776 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3777 if (drv->monitor_sock < 0) {
3778 perror("socket[PF_PACKET,SOCK_RAW]");
3782 if (add_monitor_filter(drv->monitor_sock)) {
3783 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3784 "interface; do filtering in user space");
3785 /* This works, but will cost in performance. */
3788 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3789 perror("monitor socket bind");
3793 optlen = sizeof(optval);
3796 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3797 perror("Failed to set socket priority");
3801 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3803 printf("Could not register monitor read socket\n");
3809 nl80211_remove_monitor_interface(drv);
3814 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3816 static int wpa_driver_nl80211_hapd_send_eapol(
3817 void *priv, const u8 *addr, const u8 *data,
3818 size_t data_len, int encrypt, const u8 *own_addr)
3820 struct i802_bss *bss = priv;
3821 struct wpa_driver_nl80211_data *drv = bss->drv;
3822 struct ieee80211_hdr *hdr;
3827 int qos = sta->flags & WPA_STA_WMM;
3832 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3834 hdr = os_zalloc(len);
3836 printf("malloc() failed for i802_send_data(len=%lu)\n",
3837 (unsigned long) len);
3841 hdr->frame_control =
3842 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3843 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3845 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3846 #if 0 /* To be enabled if qos determination is added above */
3848 hdr->frame_control |=
3849 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3853 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3854 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3855 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3856 pos = (u8 *) (hdr + 1);
3858 #if 0 /* To be enabled if qos determination is added above */
3860 /* add an empty QoS header if needed */
3867 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3868 pos += sizeof(rfc1042_header);
3869 WPA_PUT_BE16(pos, ETH_P_PAE);
3871 memcpy(pos, data, data_len);
3873 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3875 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3877 (unsigned long) len, errno, strerror(errno));
3885 static u32 sta_flags_nl80211(int flags)
3889 if (flags & WPA_STA_AUTHORIZED)
3890 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3891 if (flags & WPA_STA_WMM)
3892 f |= BIT(NL80211_STA_FLAG_WME);
3893 if (flags & WPA_STA_SHORT_PREAMBLE)
3894 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3895 if (flags & WPA_STA_MFP)
3896 f |= BIT(NL80211_STA_FLAG_MFP);
3902 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3904 int flags_or, int flags_and)
3906 struct i802_bss *bss = priv;
3907 struct wpa_driver_nl80211_data *drv = bss->drv;
3908 struct nl_msg *msg, *flags = NULL;
3909 struct nl80211_sta_flag_update upd;
3911 msg = nlmsg_alloc();
3915 flags = nlmsg_alloc();
3921 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3922 0, NL80211_CMD_SET_STATION, 0);
3924 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3925 if_nametoindex(bss->ifname));
3926 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3929 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3930 * can be removed eventually.
3932 if (total_flags & WPA_STA_AUTHORIZED)
3933 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3935 if (total_flags & WPA_STA_WMM)
3936 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3938 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3939 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3941 if (total_flags & WPA_STA_MFP)
3942 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3944 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3945 goto nla_put_failure;
3947 os_memset(&upd, 0, sizeof(upd));
3948 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3949 upd.set = sta_flags_nl80211(flags_or);
3950 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3954 return send_and_recv_msgs(drv, msg, NULL, NULL);
3961 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3962 struct wpa_driver_associate_params *params)
3965 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3967 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3968 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3969 nl80211_remove_monitor_interface(drv);
3973 /* TODO: setup monitor interface (and add code somewhere to remove this
3974 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3980 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3985 msg = nlmsg_alloc();
3989 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3990 NL80211_CMD_LEAVE_IBSS, 0);
3991 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3992 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3995 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3996 "(%s)", ret, strerror(-ret));
3997 goto nla_put_failure;
4001 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4009 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4010 struct wpa_driver_associate_params *params)
4016 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4018 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4019 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4025 msg = nlmsg_alloc();
4029 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4030 NL80211_CMD_JOIN_IBSS, 0);
4031 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4033 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4034 goto nla_put_failure;
4036 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4037 params->ssid, params->ssid_len);
4038 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4040 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4041 drv->ssid_len = params->ssid_len;
4043 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4044 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4046 ret = nl80211_set_conn_keys(params, msg);
4048 goto nla_put_failure;
4050 if (params->wpa_ie) {
4051 wpa_hexdump(MSG_DEBUG,
4052 " * Extra IEs for Beacon/Probe Response frames",
4053 params->wpa_ie, params->wpa_ie_len);
4054 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4058 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4061 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4062 ret, strerror(-ret));
4064 if (ret == -EALREADY && count == 1) {
4065 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4067 nl80211_leave_ibss(drv);
4072 goto nla_put_failure;
4075 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4083 static int wpa_driver_nl80211_connect(
4084 struct wpa_driver_nl80211_data *drv,
4085 struct wpa_driver_associate_params *params)
4088 enum nl80211_auth_type type;
4091 msg = nlmsg_alloc();
4095 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4096 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4097 NL80211_CMD_CONNECT, 0);
4099 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4100 if (params->bssid) {
4101 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4102 MAC2STR(params->bssid));
4103 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4106 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4107 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4110 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4111 params->ssid, params->ssid_len);
4112 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4114 if (params->ssid_len > sizeof(drv->ssid))
4115 goto nla_put_failure;
4116 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4117 drv->ssid_len = params->ssid_len;
4119 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4121 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4124 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4125 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4126 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4127 type = NL80211_AUTHTYPE_SHARED_KEY;
4128 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4129 type = NL80211_AUTHTYPE_NETWORK_EAP;
4130 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4131 type = NL80211_AUTHTYPE_FT;
4133 goto nla_put_failure;
4135 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4136 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4138 if (params->wpa_ie && params->wpa_ie_len) {
4139 enum nl80211_wpa_versions ver;
4141 if (params->wpa_ie[0] == WLAN_EID_RSN)
4142 ver = NL80211_WPA_VERSION_2;
4144 ver = NL80211_WPA_VERSION_1;
4146 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4147 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4150 if (params->pairwise_suite != CIPHER_NONE) {
4153 switch (params->pairwise_suite) {
4155 cipher = WLAN_CIPHER_SUITE_WEP40;
4158 cipher = WLAN_CIPHER_SUITE_WEP104;
4161 cipher = WLAN_CIPHER_SUITE_CCMP;
4165 cipher = WLAN_CIPHER_SUITE_TKIP;
4168 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4171 if (params->group_suite != CIPHER_NONE) {
4174 switch (params->group_suite) {
4176 cipher = WLAN_CIPHER_SUITE_WEP40;
4179 cipher = WLAN_CIPHER_SUITE_WEP104;
4182 cipher = WLAN_CIPHER_SUITE_CCMP;
4186 cipher = WLAN_CIPHER_SUITE_TKIP;
4189 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4192 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4193 params->key_mgmt_suite == KEY_MGMT_PSK) {
4194 int mgmt = WLAN_AKM_SUITE_PSK;
4196 switch (params->key_mgmt_suite) {
4197 case KEY_MGMT_802_1X:
4198 mgmt = WLAN_AKM_SUITE_8021X;
4202 mgmt = WLAN_AKM_SUITE_PSK;
4205 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4208 ret = nl80211_set_conn_keys(params, msg);
4210 goto nla_put_failure;
4212 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4215 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4216 "(%s)", ret, strerror(-ret));
4217 goto nla_put_failure;
4220 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4229 static int wpa_driver_nl80211_associate(
4230 void *priv, struct wpa_driver_associate_params *params)
4232 struct i802_bss *bss = priv;
4233 struct wpa_driver_nl80211_data *drv = bss->drv;
4237 if (params->mode == IEEE80211_MODE_AP)
4238 return wpa_driver_nl80211_ap(drv, params);
4240 if (params->mode == IEEE80211_MODE_IBSS)
4241 return wpa_driver_nl80211_ibss(drv, params);
4243 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4244 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4246 return wpa_driver_nl80211_connect(drv, params);
4249 drv->associated = 0;
4251 msg = nlmsg_alloc();
4255 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4257 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4258 NL80211_CMD_ASSOCIATE, 0);
4260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4261 if (params->bssid) {
4262 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4263 MAC2STR(params->bssid));
4264 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4267 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4268 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4269 drv->assoc_freq = params->freq;
4271 drv->assoc_freq = 0;
4273 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4274 params->ssid, params->ssid_len);
4275 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4277 if (params->ssid_len > sizeof(drv->ssid))
4278 goto nla_put_failure;
4279 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4280 drv->ssid_len = params->ssid_len;
4282 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4284 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4287 #ifdef CONFIG_IEEE80211W
4288 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4289 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4290 #endif /* CONFIG_IEEE80211W */
4292 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4294 if (params->prev_bssid) {
4295 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4296 MAC2STR(params->prev_bssid));
4297 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4298 params->prev_bssid);
4302 wpa_printf(MSG_DEBUG, " * P2P group");
4304 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4307 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4308 "(%s)", ret, strerror(-ret));
4309 nl80211_dump_scan(drv);
4310 goto nla_put_failure;
4313 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4322 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4323 int ifindex, int mode)
4328 msg = nlmsg_alloc();
4332 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4333 0, NL80211_CMD_SET_INTERFACE, 0);
4334 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4335 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4337 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4341 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4342 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4347 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4349 struct i802_bss *bss = priv;
4350 struct wpa_driver_nl80211_data *drv = bss->drv;
4357 nlmode = NL80211_IFTYPE_STATION;
4360 nlmode = NL80211_IFTYPE_ADHOC;
4363 nlmode = NL80211_IFTYPE_AP;
4369 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4370 drv->nlmode = nlmode;
4375 if (nlmode == drv->nlmode) {
4376 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4377 "requested mode - ignore error");
4379 goto done; /* Already in the requested mode */
4382 /* mac80211 doesn't allow mode changes while the device is up, so
4383 * take the device down, try to set the mode again, and bring the
4386 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4388 for (i = 0; i < 10; i++) {
4389 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4391 /* Try to set the mode again while the interface is
4393 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4394 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4400 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4402 os_sleep(0, 100000);
4406 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4407 "interface is down");
4408 drv->nlmode = nlmode;
4412 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4413 /* Setup additional AP mode functionality if needed */
4414 if (drv->monitor_ifidx < 0 &&
4415 nl80211_create_monitor_interface(drv))
4417 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4418 /* Remove additional AP mode functionality */
4419 nl80211_remove_monitor_interface(drv);
4420 bss->beacon_set = 0;
4424 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4425 "from %d failed", nlmode, drv->nlmode);
4431 static int wpa_driver_nl80211_get_capa(void *priv,
4432 struct wpa_driver_capa *capa)
4434 struct i802_bss *bss = priv;
4435 struct wpa_driver_nl80211_data *drv = bss->drv;
4436 if (!drv->has_capability)
4438 os_memcpy(capa, &drv->capa, sizeof(*capa));
4443 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4445 struct i802_bss *bss = priv;
4446 struct wpa_driver_nl80211_data *drv = bss->drv;
4448 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4449 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4450 drv->operstate = state;
4451 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4452 state ? IF_OPER_UP : IF_OPER_DORMANT);
4456 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4458 struct i802_bss *bss = priv;
4459 struct wpa_driver_nl80211_data *drv = bss->drv;
4461 struct nl80211_sta_flag_update upd;
4463 msg = nlmsg_alloc();
4467 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4468 0, NL80211_CMD_SET_STATION, 0);
4470 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4471 if_nametoindex(bss->ifname));
4472 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4474 os_memset(&upd, 0, sizeof(upd));
4475 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4477 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4478 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4480 return send_and_recv_msgs(drv, msg, NULL, NULL);
4488 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4493 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4495 for (i = 0; i < drv->num_if_indices; i++) {
4496 if (drv->if_indices[i] == 0) {
4497 drv->if_indices[i] = ifidx;
4502 if (drv->if_indices != drv->default_if_indices)
4503 old = drv->if_indices;
4507 drv->if_indices = os_realloc(old,
4508 sizeof(int) * (drv->num_if_indices + 1));
4509 if (!drv->if_indices) {
4511 drv->if_indices = drv->default_if_indices;
4513 drv->if_indices = old;
4514 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4516 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4519 os_memcpy(drv->if_indices, drv->default_if_indices,
4520 sizeof(drv->default_if_indices));
4521 drv->if_indices[drv->num_if_indices] = ifidx;
4522 drv->num_if_indices++;
4526 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4530 for (i = 0; i < drv->num_if_indices; i++) {
4531 if (drv->if_indices[i] == ifidx) {
4532 drv->if_indices[i] = 0;
4539 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4543 for (i = 0; i < drv->num_if_indices; i++)
4544 if (drv->if_indices[i] == ifidx)
4551 static inline int min_int(int a, int b)
4559 static int get_key_handler(struct nl_msg *msg, void *arg)
4561 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4562 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4564 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4565 genlmsg_attrlen(gnlh, 0), NULL);
4568 * TODO: validate the key index and mac address!
4569 * Otherwise, there's a race condition as soon as
4570 * the kernel starts sending key notifications.
4573 if (tb[NL80211_ATTR_KEY_SEQ])
4574 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4575 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4580 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4583 struct i802_bss *bss = priv;
4584 struct wpa_driver_nl80211_data *drv = bss->drv;
4587 msg = nlmsg_alloc();
4591 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4592 0, NL80211_CMD_GET_KEY, 0);
4595 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4596 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4597 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4601 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4607 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4610 struct i802_bss *bss = priv;
4611 struct wpa_driver_nl80211_data *drv = bss->drv;
4613 u8 rates[NL80211_MAX_SUPP_RATES];
4617 msg = nlmsg_alloc();
4621 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4622 NL80211_CMD_SET_BSS, 0);
4624 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4625 rates[rates_len++] = basic_rates[i] / 5;
4627 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4629 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4631 return send_and_recv_msgs(drv, msg, NULL, NULL);
4636 #endif /* HOSTAPD */
4639 /* Set kernel driver on given frequency (MHz) */
4640 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4642 struct i802_bss *bss = priv;
4643 struct wpa_driver_nl80211_data *drv = bss->drv;
4644 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4645 freq->sec_channel_offset);
4651 static int i802_set_rts(void *priv, int rts)
4653 struct i802_bss *bss = priv;
4654 struct wpa_driver_nl80211_data *drv = bss->drv;
4659 msg = nlmsg_alloc();
4668 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4669 0, NL80211_CMD_SET_WIPHY, 0);
4670 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4671 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4673 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4677 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4678 "%d (%s)", rts, ret, strerror(-ret));
4683 static int i802_set_frag(void *priv, int frag)
4685 struct i802_bss *bss = priv;
4686 struct wpa_driver_nl80211_data *drv = bss->drv;
4691 msg = nlmsg_alloc();
4700 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4701 0, NL80211_CMD_SET_WIPHY, 0);
4702 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4703 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4705 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4709 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4710 "%d: %d (%s)", frag, ret, strerror(-ret));
4715 static int i802_flush(void *priv)
4717 struct i802_bss *bss = priv;
4718 struct wpa_driver_nl80211_data *drv = bss->drv;
4721 msg = nlmsg_alloc();
4725 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4726 0, NL80211_CMD_DEL_STATION, 0);
4729 * XXX: FIX! this needs to flush all VLANs too
4731 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4732 if_nametoindex(bss->ifname));
4734 return send_and_recv_msgs(drv, msg, NULL, NULL);
4740 static int get_sta_handler(struct nl_msg *msg, void *arg)
4742 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4743 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4744 struct hostap_sta_driver_data *data = arg;
4745 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4746 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4747 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4748 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4749 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4750 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4751 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4754 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4755 genlmsg_attrlen(gnlh, 0), NULL);
4758 * TODO: validate the interface and mac address!
4759 * Otherwise, there's a race condition as soon as
4760 * the kernel starts sending station notifications.
4763 if (!tb[NL80211_ATTR_STA_INFO]) {
4764 wpa_printf(MSG_DEBUG, "sta stats missing!");
4767 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4768 tb[NL80211_ATTR_STA_INFO],
4770 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4774 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4775 data->inactive_msec =
4776 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4777 if (stats[NL80211_STA_INFO_RX_BYTES])
4778 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4779 if (stats[NL80211_STA_INFO_TX_BYTES])
4780 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4781 if (stats[NL80211_STA_INFO_RX_PACKETS])
4783 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4784 if (stats[NL80211_STA_INFO_TX_PACKETS])
4786 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4791 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4794 struct i802_bss *bss = priv;
4795 struct wpa_driver_nl80211_data *drv = bss->drv;
4798 os_memset(data, 0, sizeof(*data));
4799 msg = nlmsg_alloc();
4803 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4804 0, NL80211_CMD_GET_STATION, 0);
4806 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4807 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4809 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4815 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4816 int cw_min, int cw_max, int burst_time)
4818 struct i802_bss *bss = priv;
4819 struct wpa_driver_nl80211_data *drv = bss->drv;
4821 struct nlattr *txq, *params;
4823 msg = nlmsg_alloc();
4827 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4828 0, NL80211_CMD_SET_WIPHY, 0);
4830 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4832 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4834 goto nla_put_failure;
4836 /* We are only sending parameters for a single TXQ at a time */
4837 params = nla_nest_start(msg, 1);
4839 goto nla_put_failure;
4841 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4842 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4843 * 32 usec, so need to convert the value here. */
4844 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4845 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4846 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4847 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4849 nla_nest_end(msg, params);
4851 nla_nest_end(msg, txq);
4853 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4860 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4862 struct i802_bss *bss = priv;
4863 struct wpa_driver_nl80211_data *drv = bss->drv;
4866 msg = nlmsg_alloc();
4870 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4871 NL80211_CMD_SET_BSS, 0);
4874 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4876 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4878 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4880 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4882 return send_and_recv_msgs(drv, msg, NULL, NULL);
4888 static int i802_set_cts_protect(void *priv, int value)
4890 return i802_set_bss(priv, value, -1, -1);
4894 static int i802_set_preamble(void *priv, int value)
4896 return i802_set_bss(priv, -1, value, -1);
4900 static int i802_set_short_slot_time(void *priv, int value)
4902 return i802_set_bss(priv, -1, -1, value);
4906 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4907 const char *ifname, int vlan_id)
4909 struct i802_bss *bss = priv;
4910 struct wpa_driver_nl80211_data *drv = bss->drv;
4914 msg = nlmsg_alloc();
4918 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4919 0, NL80211_CMD_SET_STATION, 0);
4921 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4922 if_nametoindex(bss->ifname));
4923 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4924 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4925 if_nametoindex(ifname));
4927 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4929 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4930 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4931 MAC2STR(addr), ifname, vlan_id, ret,
4939 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4941 struct i802_bss *bss = priv;
4942 struct wpa_driver_nl80211_data *drv = bss->drv;
4943 char name[IFNAMSIZ + 1];
4945 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4946 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4947 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4949 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4952 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4953 return i802_set_sta_vlan(priv, addr, name, 0);
4955 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4956 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4962 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4964 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4965 struct sockaddr_ll lladdr;
4966 unsigned char buf[3000];
4968 socklen_t fromlen = sizeof(lladdr);
4970 len = recvfrom(sock, buf, sizeof(buf), 0,
4971 (struct sockaddr *)&lladdr, &fromlen);
4977 if (have_ifidx(drv, lladdr.sll_ifindex))
4978 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4982 static int i802_get_inact_sec(void *priv, const u8 *addr)
4984 struct hostap_sta_driver_data data;
4987 data.inactive_msec = (unsigned long) -1;
4988 ret = i802_read_sta_data(priv, &data, addr);
4989 if (ret || data.inactive_msec == (unsigned long) -1)
4991 return data.inactive_msec / 1000;
4995 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5004 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5007 struct i802_bss *bss = priv;
5008 struct ieee80211_mgmt mgmt;
5010 memset(&mgmt, 0, sizeof(mgmt));
5011 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5012 WLAN_FC_STYPE_DEAUTH);
5013 memcpy(mgmt.da, addr, ETH_ALEN);
5014 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5015 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5016 mgmt.u.deauth.reason_code = host_to_le16(reason);
5017 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5019 sizeof(mgmt.u.deauth));
5023 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5026 struct i802_bss *bss = priv;
5027 struct ieee80211_mgmt mgmt;
5029 memset(&mgmt, 0, sizeof(mgmt));
5030 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5031 WLAN_FC_STYPE_DISASSOC);
5032 memcpy(mgmt.da, addr, ETH_ALEN);
5033 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5034 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5035 mgmt.u.disassoc.reason_code = host_to_le16(reason);
5036 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5038 sizeof(mgmt.u.disassoc));
5042 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5043 const char *brname, const char *ifname)
5046 char in_br[IFNAMSIZ];
5048 os_strlcpy(drv->brname, brname, IFNAMSIZ);
5049 ifindex = if_nametoindex(brname);
5052 * Bridge was configured, but the bridge device does
5053 * not exist. Try to add it now.
5055 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5056 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5057 "bridge interface %s: %s",
5058 brname, strerror(errno));
5061 drv->added_bridge = 1;
5062 add_ifidx(drv, if_nametoindex(brname));
5065 if (linux_br_get(in_br, ifname) == 0) {
5066 if (os_strcmp(in_br, brname) == 0)
5067 return 0; /* already in the bridge */
5069 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5070 "bridge %s", ifname, in_br);
5071 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5072 wpa_printf(MSG_ERROR, "nl80211: Failed to "
5073 "remove interface %s from bridge "
5075 ifname, brname, strerror(errno));
5080 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5082 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5083 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5084 "into bridge %s: %s",
5085 ifname, brname, strerror(errno));
5088 drv->added_if_into_bridge = 1;
5094 static void *i802_init(struct hostapd_data *hapd,
5095 struct wpa_init_params *params)
5097 struct wpa_driver_nl80211_data *drv;
5098 struct i802_bss *bss;
5100 char brname[IFNAMSIZ];
5101 int ifindex, br_ifindex;
5104 bss = wpa_driver_nl80211_init(hapd, params->ifname);
5109 if (linux_br_get(brname, params->ifname) == 0) {
5110 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5111 params->ifname, brname);
5112 br_ifindex = if_nametoindex(brname);
5118 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5119 drv->if_indices = drv->default_if_indices;
5120 for (i = 0; i < params->num_bridge; i++) {
5121 if (params->bridge[i]) {
5122 ifindex = if_nametoindex(params->bridge[i]);
5124 add_ifidx(drv, ifindex);
5125 if (ifindex == br_ifindex)
5129 if (!br_added && br_ifindex &&
5130 (params->num_bridge == 0 || !params->bridge[0]))
5131 add_ifidx(drv, br_ifindex);
5133 /* start listening for EAPOL on the default AP interface */
5134 add_ifidx(drv, drv->ifindex);
5136 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5139 if (params->bssid) {
5140 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5145 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5146 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5147 "into AP mode", bss->ifname);
5151 if (params->num_bridge && params->bridge[0] &&
5152 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5155 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5158 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5159 if (drv->eapol_sock < 0) {
5160 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5164 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5166 printf("Could not register read socket for eapol\n");
5170 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5176 nl80211_remove_monitor_interface(drv);
5177 if (drv->ioctl_sock >= 0)
5178 close(drv->ioctl_sock);
5180 genl_family_put(drv->nl80211);
5181 nl_cache_free(drv->nl_cache);
5182 nl80211_handle_destroy(drv->nl_handle);
5183 nl_cb_put(drv->nl_cb);
5190 static void i802_deinit(void *priv)
5192 wpa_driver_nl80211_deinit(priv);
5195 #endif /* HOSTAPD */
5198 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5199 enum wpa_driver_if_type type)
5202 case WPA_IF_STATION:
5203 case WPA_IF_P2P_CLIENT:
5204 case WPA_IF_P2P_GROUP:
5205 return NL80211_IFTYPE_STATION;
5206 case WPA_IF_AP_VLAN:
5207 return NL80211_IFTYPE_AP_VLAN;
5210 return NL80211_IFTYPE_AP;
5216 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5217 const char *ifname, const u8 *addr,
5218 void *bss_ctx, void **drv_priv,
5219 char *force_ifname, u8 *if_addr)
5221 struct i802_bss *bss = priv;
5222 struct wpa_driver_nl80211_data *drv = bss->drv;
5225 struct i802_bss *new_bss = NULL;
5227 if (type == WPA_IF_AP_BSS) {
5228 new_bss = os_zalloc(sizeof(*new_bss));
5229 if (new_bss == NULL)
5232 #endif /* HOSTAPD */
5235 os_memcpy(if_addr, addr, ETH_ALEN);
5236 ifidx = nl80211_create_iface(drv, ifname,
5237 wpa_driver_nl80211_if_type(type), addr,
5242 #endif /* HOSTAPD */
5247 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5251 if (type == WPA_IF_AP_BSS) {
5252 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5253 nl80211_remove_iface(drv, ifidx);
5257 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5258 new_bss->ifindex = ifidx;
5260 new_bss->next = drv->first_bss.next;
5261 drv->first_bss.next = new_bss;
5263 *drv_priv = new_bss;
5265 #endif /* HOSTAPD */
5271 static int wpa_driver_nl80211_if_remove(void *priv,
5272 enum wpa_driver_if_type type,
5275 struct i802_bss *bss = priv;
5276 struct wpa_driver_nl80211_data *drv = bss->drv;
5277 int ifindex = if_nametoindex(ifname);
5279 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5280 __func__, type, ifname, ifindex);
5283 nl80211_remove_iface(drv, ifindex);
5286 if (type != WPA_IF_AP_BSS)
5289 if (bss != &drv->first_bss) {
5290 struct i802_bss *tbss = &drv->first_bss;
5293 if (tbss->next != bss)
5296 tbss->next = bss->next;
5301 #endif /* HOSTAPD */
5307 static int cookie_handler(struct nl_msg *msg, void *arg)
5309 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5310 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5312 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5313 genlmsg_attrlen(gnlh, 0), NULL);
5314 if (tb[NL80211_ATTR_COOKIE])
5315 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5320 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5321 unsigned int freq, const u8 *buf,
5322 size_t buf_len, u64 *cookie_out)
5328 msg = nlmsg_alloc();
5332 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5333 NL80211_CMD_FRAME, 0);
5335 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5336 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5337 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5340 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5343 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5344 "(%s)", ret, strerror(-ret));
5345 goto nla_put_failure;
5347 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5348 "cookie 0x%llx", (long long unsigned int) cookie);
5351 *cookie_out = cookie;
5359 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5360 const u8 *dst, const u8 *src,
5362 const u8 *data, size_t data_len)
5364 struct i802_bss *bss = priv;
5365 struct wpa_driver_nl80211_data *drv = bss->drv;
5368 struct ieee80211_hdr *hdr;
5370 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5373 buf = os_zalloc(24 + data_len);
5376 os_memcpy(buf + 24, data, data_len);
5377 hdr = (struct ieee80211_hdr *) buf;
5378 hdr->frame_control =
5379 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5380 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5381 os_memcpy(hdr->addr2, src, ETH_ALEN);
5382 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5384 if (drv->nlmode == NL80211_IFTYPE_AP)
5385 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5387 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5388 &drv->send_action_cookie);
5395 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5396 unsigned int duration)
5398 struct i802_bss *bss = priv;
5399 struct wpa_driver_nl80211_data *drv = bss->drv;
5404 msg = nlmsg_alloc();
5408 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5409 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5411 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5412 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5413 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5416 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5418 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5419 "0x%llx for freq=%u MHz duration=%u",
5420 (long long unsigned int) cookie, freq, duration);
5421 drv->remain_on_chan_cookie = cookie;
5424 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5425 "(freq=%d duration=%u): %d (%s)",
5426 freq, duration, ret, strerror(-ret));
5432 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5434 struct i802_bss *bss = priv;
5435 struct wpa_driver_nl80211_data *drv = bss->drv;
5439 if (!drv->pending_remain_on_chan) {
5440 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5445 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5447 (long long unsigned int) drv->remain_on_chan_cookie);
5449 msg = nlmsg_alloc();
5453 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5454 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5456 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5457 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5459 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5462 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5463 "%d (%s)", ret, strerror(-ret));
5469 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5471 struct i802_bss *bss = priv;
5472 struct wpa_driver_nl80211_data *drv = bss->drv;
5474 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5475 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5476 "allowed in station mode (iftype=%d)",
5482 if (drv->nl_handle_preq) {
5483 eloop_unregister_read_sock(
5484 nl_socket_get_fd(drv->nl_handle_preq));
5485 nl_cache_free(drv->nl_cache_preq);
5486 nl80211_handle_destroy(drv->nl_handle_preq);
5487 drv->nl_handle_preq = NULL;
5492 if (drv->nl_handle_preq) {
5493 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5498 drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5499 if (drv->nl_handle_preq == NULL) {
5500 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5501 "netlink callbacks (preq)");
5505 if (genl_connect(drv->nl_handle_preq)) {
5506 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5507 "generic netlink (preq)");
5512 #ifdef CONFIG_LIBNL20
5513 if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5514 &drv->nl_cache_preq) < 0) {
5515 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5516 "netlink cache (preq)");
5519 #else /* CONFIG_LIBNL20 */
5520 drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5521 if (drv->nl_cache_preq == NULL) {
5522 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5523 "netlink cache (preq)");
5526 #endif /* CONFIG_LIBNL20 */
5528 if (nl80211_register_frame(drv, drv->nl_handle_preq,
5529 (WLAN_FC_TYPE_MGMT << 2) |
5530 (WLAN_FC_STYPE_PROBE_REQ << 4),
5535 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5536 wpa_driver_nl80211_event_receive, drv,
5537 drv->nl_handle_preq);
5542 nl_cache_free(drv->nl_cache_preq);
5544 nl80211_handle_destroy(drv->nl_handle_preq);
5545 drv->nl_handle_preq = NULL;
5551 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5552 int ifindex, int disabled)
5555 struct nlattr *bands, *band;
5558 msg = nlmsg_alloc();
5562 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5563 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5564 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5566 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5568 goto nla_put_failure;
5571 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5572 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5573 * rates. All 5 GHz rates are left enabled.
5575 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5577 goto nla_put_failure;
5578 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5579 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5580 nla_nest_end(msg, band);
5582 nla_nest_end(msg, bands);
5584 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5587 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5588 "(%s)", ret, strerror(-ret));
5599 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5601 struct i802_bss *bss = priv;
5602 struct wpa_driver_nl80211_data *drv = bss->drv;
5603 drv->disable_11b_rates = disabled;
5604 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5608 static int wpa_driver_nl80211_deinit_ap(void *priv)
5610 struct i802_bss *bss = priv;
5611 struct wpa_driver_nl80211_data *drv = bss->drv;
5612 if (drv->nlmode != NL80211_IFTYPE_AP)
5614 wpa_driver_nl80211_del_beacon(drv);
5615 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5619 static void wpa_driver_nl80211_resume(void *priv)
5621 struct i802_bss *bss = priv;
5622 struct wpa_driver_nl80211_data *drv = bss->drv;
5623 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5624 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5630 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5631 const u8 *ies, size_t ies_len)
5633 struct i802_bss *bss = priv;
5634 struct wpa_driver_nl80211_data *drv = bss->drv;
5638 u8 own_addr[ETH_ALEN];
5640 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5644 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5645 "action %d", action);
5650 * Action frame payload:
5651 * Category[1] = 6 (Fast BSS Transition)
5652 * Action[1] = 1 (Fast BSS Transition Request)
5658 data_len = 2 + 2 * ETH_ALEN + ies_len;
5659 data = os_malloc(data_len);
5663 *pos++ = 0x06; /* FT Action category */
5665 os_memcpy(pos, own_addr, ETH_ALEN);
5667 os_memcpy(pos, target_ap, ETH_ALEN);
5669 os_memcpy(pos, ies, ies_len);
5671 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5672 own_addr, drv->bssid,
5680 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5682 struct i802_bss *bss = priv;
5683 struct wpa_driver_nl80211_data *drv = bss->drv;
5684 struct nl_msg *msg, *cqm = NULL;
5686 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5687 "hysteresis=%d", threshold, hysteresis);
5689 msg = nlmsg_alloc();
5693 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5694 0, NL80211_CMD_SET_CQM, 0);
5696 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5698 cqm = nlmsg_alloc();
5702 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5703 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5704 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5706 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5718 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5721 struct i802_bss *bss = priv;
5722 struct wpa_driver_nl80211_data *drv = bss->drv;
5723 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5727 static int nl80211_set_intra_bss(void *priv, int enabled)
5729 struct i802_bss *bss = priv;
5730 struct wpa_driver_nl80211_data *drv = bss->drv;
5733 msg = nlmsg_alloc();
5737 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5738 NL80211_CMD_SET_BSS, 0);
5740 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5741 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5743 return send_and_recv_msgs(drv, msg, NULL, NULL);
5749 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5751 .desc = "Linux nl80211/cfg80211",
5752 .get_bssid = wpa_driver_nl80211_get_bssid,
5753 .get_ssid = wpa_driver_nl80211_get_ssid,
5754 .set_key = wpa_driver_nl80211_set_key,
5755 .scan2 = wpa_driver_nl80211_scan,
5756 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5757 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5758 .disassociate = wpa_driver_nl80211_disassociate,
5759 .authenticate = wpa_driver_nl80211_authenticate,
5760 .associate = wpa_driver_nl80211_associate,
5761 .init = wpa_driver_nl80211_init,
5762 .deinit = wpa_driver_nl80211_deinit,
5763 .get_capa = wpa_driver_nl80211_get_capa,
5764 .set_operstate = wpa_driver_nl80211_set_operstate,
5765 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5766 .set_country = wpa_driver_nl80211_set_country,
5767 .set_beacon = wpa_driver_nl80211_set_beacon,
5768 .if_add = wpa_driver_nl80211_if_add,
5769 .if_remove = wpa_driver_nl80211_if_remove,
5770 .send_mlme = wpa_driver_nl80211_send_mlme,
5771 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5772 .sta_add = wpa_driver_nl80211_sta_add,
5773 .sta_remove = wpa_driver_nl80211_sta_remove,
5774 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5775 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5777 .hapd_init = i802_init,
5778 .hapd_deinit = i802_deinit,
5779 .get_seqnum = i802_get_seqnum,
5780 .flush = i802_flush,
5781 .read_sta_data = i802_read_sta_data,
5782 .sta_deauth = i802_sta_deauth,
5783 .sta_disassoc = i802_sta_disassoc,
5784 .get_inact_sec = i802_get_inact_sec,
5785 .sta_clear_stats = i802_sta_clear_stats,
5786 .set_rts = i802_set_rts,
5787 .set_frag = i802_set_frag,
5788 .set_rate_sets = i802_set_rate_sets,
5789 .set_cts_protect = i802_set_cts_protect,
5790 .set_preamble = i802_set_preamble,
5791 .set_short_slot_time = i802_set_short_slot_time,
5792 .set_tx_queue_params = i802_set_tx_queue_params,
5793 .set_sta_vlan = i802_set_sta_vlan,
5794 .set_wds_sta = i802_set_wds_sta,
5795 #endif /* HOSTAPD */
5796 .set_freq = i802_set_freq,
5797 .send_action = wpa_driver_nl80211_send_action,
5798 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5799 .cancel_remain_on_channel =
5800 wpa_driver_nl80211_cancel_remain_on_channel,
5801 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5802 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5803 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5804 .resume = wpa_driver_nl80211_resume,
5805 .send_ft_action = nl80211_send_ft_action,
5806 .signal_monitor = nl80211_signal_monitor,
5807 .send_frame = nl80211_send_frame,
5808 .set_intra_bss = nl80211_set_intra_bss,