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 },
1023 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1024 genlmsg_attrlen(gnlh, 0), NULL);
1025 if (!tb[NL80211_ATTR_STA_INFO] ||
1026 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1027 tb[NL80211_ATTR_STA_INFO], policy))
1029 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1032 *sig = (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1037 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1044 msg = nlmsg_alloc();
1048 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1049 0, NL80211_CMD_GET_STATION, 0);
1051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1052 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1054 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1060 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1061 struct nlattr *tb[])
1063 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1064 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1065 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1066 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1068 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1069 enum nl80211_cqm_rssi_threshold_event event;
1070 union wpa_event_data ed;
1073 if (tb[NL80211_ATTR_CQM] == NULL ||
1074 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1076 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1080 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1082 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1084 os_memset(&ed, 0, sizeof(ed));
1086 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1087 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1088 "event: RSSI high");
1089 ed.signal_change.above_threshold = 1;
1090 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1091 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1093 ed.signal_change.above_threshold = 0;
1097 res = nl80211_get_link_signal(drv, &sig);
1099 ed.signal_change.current_signal = sig;
1100 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm", sig);
1103 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1107 static int process_event(struct nl_msg *msg, void *arg)
1109 struct wpa_driver_nl80211_data *drv = arg;
1110 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1111 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1112 union wpa_event_data data;
1114 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1115 genlmsg_attrlen(gnlh, 0), NULL);
1117 if (tb[NL80211_ATTR_IFINDEX]) {
1118 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1119 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1120 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1121 " for foreign interface (ifindex %d)",
1122 gnlh->cmd, ifindex);
1127 if (drv->ap_scan_as_station &&
1128 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1129 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1130 wpa_driver_nl80211_set_mode(&drv->first_bss,
1132 drv->ap_scan_as_station = 0;
1135 switch (gnlh->cmd) {
1136 case NL80211_CMD_TRIGGER_SCAN:
1137 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1139 case NL80211_CMD_NEW_SCAN_RESULTS:
1140 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1141 drv->scan_complete_events = 1;
1142 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1144 send_scan_event(drv, 0, tb);
1146 case NL80211_CMD_SCAN_ABORTED:
1147 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1149 * Need to indicate that scan results are available in order
1150 * not to make wpa_supplicant stop its scanning.
1152 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1154 send_scan_event(drv, 1, tb);
1156 case NL80211_CMD_AUTHENTICATE:
1157 case NL80211_CMD_ASSOCIATE:
1158 case NL80211_CMD_DEAUTHENTICATE:
1159 case NL80211_CMD_DISASSOCIATE:
1160 case NL80211_CMD_FRAME:
1161 case NL80211_CMD_FRAME_TX_STATUS:
1162 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1163 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1164 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1165 tb[NL80211_ATTR_COOKIE]);
1167 case NL80211_CMD_CONNECT:
1168 case NL80211_CMD_ROAM:
1169 mlme_event_connect(drv, gnlh->cmd,
1170 tb[NL80211_ATTR_STATUS_CODE],
1171 tb[NL80211_ATTR_MAC],
1172 tb[NL80211_ATTR_REQ_IE],
1173 tb[NL80211_ATTR_RESP_IE]);
1175 case NL80211_CMD_DISCONNECT:
1176 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1178 * Avoid reporting two disassociation events that could
1179 * confuse the core code.
1181 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1182 "event when using userspace SME");
1185 drv->associated = 0;
1186 os_memset(&data, 0, sizeof(data));
1187 if (tb[NL80211_ATTR_REASON_CODE])
1188 data.disassoc_info.reason_code =
1189 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1190 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1192 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1193 mlme_event_michael_mic_failure(drv, tb);
1195 case NL80211_CMD_JOIN_IBSS:
1196 mlme_event_join_ibss(drv, tb);
1198 case NL80211_CMD_REMAIN_ON_CHANNEL:
1199 mlme_event_remain_on_channel(drv, 0, tb);
1201 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1202 mlme_event_remain_on_channel(drv, 1, tb);
1204 case NL80211_CMD_NOTIFY_CQM:
1205 nl80211_cqm_event(drv, tb);
1208 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1209 "(cmd=%d)", gnlh->cmd);
1217 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1221 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1223 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1225 cb = nl_cb_clone(drv->nl_cb);
1228 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1229 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1230 nl_recvmsgs(handle, cb);
1236 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1237 * @priv: driver_nl80211 private data
1238 * @alpha2_arg: country to which to switch to
1239 * Returns: 0 on success, -1 on failure
1241 * This asks nl80211 to set the regulatory domain for given
1242 * country ISO / IEC alpha2.
1244 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1246 struct i802_bss *bss = priv;
1247 struct wpa_driver_nl80211_data *drv = bss->drv;
1251 msg = nlmsg_alloc();
1255 alpha2[0] = alpha2_arg[0];
1256 alpha2[1] = alpha2_arg[1];
1259 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1260 0, NL80211_CMD_REQ_SET_REG, 0);
1262 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1263 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1272 struct wiphy_info_data {
1276 int connect_supported;
1280 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1282 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1283 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1284 struct wiphy_info_data *info = arg;
1286 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1287 genlmsg_attrlen(gnlh, 0), NULL);
1289 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1290 info->max_scan_ssids =
1291 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1293 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1294 struct nlattr *nl_mode;
1296 nla_for_each_nested(nl_mode,
1297 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1298 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1299 info->ap_supported = 1;
1305 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1306 struct nlattr *nl_cmd;
1309 nla_for_each_nested(nl_cmd,
1310 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1311 u32 cmd = nla_get_u32(nl_cmd);
1312 if (cmd == NL80211_CMD_AUTHENTICATE)
1313 info->auth_supported = 1;
1314 else if (cmd == NL80211_CMD_CONNECT)
1315 info->connect_supported = 1;
1323 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1324 struct wiphy_info_data *info)
1328 os_memset(info, 0, sizeof(*info));
1329 msg = nlmsg_alloc();
1333 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1334 0, NL80211_CMD_GET_WIPHY, 0);
1336 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1338 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1347 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1349 struct wiphy_info_data info;
1350 if (wpa_driver_nl80211_get_info(drv, &info))
1352 drv->has_capability = 1;
1353 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1354 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1355 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1356 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1357 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1358 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1359 WPA_DRIVER_CAPA_ENC_WEP104 |
1360 WPA_DRIVER_CAPA_ENC_TKIP |
1361 WPA_DRIVER_CAPA_ENC_CCMP;
1362 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1363 WPA_DRIVER_AUTH_SHARED |
1364 WPA_DRIVER_AUTH_LEAP;
1366 drv->capa.max_scan_ssids = info.max_scan_ssids;
1367 if (info.ap_supported)
1368 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1370 if (info.auth_supported)
1371 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1372 else if (!info.connect_supported) {
1373 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1374 "authentication/association or connect commands");
1378 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1379 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1380 drv->capa.max_remain_on_chan = 5000;
1384 #endif /* HOSTAPD */
1387 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1391 /* Initialize generic netlink and nl80211 */
1393 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1394 if (drv->nl_cb == NULL) {
1395 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1400 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1401 if (drv->nl_handle == NULL) {
1402 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1407 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1408 if (drv->nl_handle_event == NULL) {
1409 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1410 "callbacks (event)");
1414 if (genl_connect(drv->nl_handle)) {
1415 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1420 if (genl_connect(drv->nl_handle_event)) {
1421 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1426 #ifdef CONFIG_LIBNL20
1427 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1428 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1432 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1434 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1435 "netlink cache (event)");
1438 #else /* CONFIG_LIBNL20 */
1439 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1440 if (drv->nl_cache == NULL) {
1441 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1445 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1446 if (drv->nl_cache_event == NULL) {
1447 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1448 "netlink cache (event)");
1451 #endif /* CONFIG_LIBNL20 */
1453 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1454 if (drv->nl80211 == NULL) {
1455 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1460 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1462 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1464 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1465 "membership for scan events: %d (%s)",
1466 ret, strerror(-ret));
1470 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1472 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1474 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1475 "membership for mlme events: %d (%s)",
1476 ret, strerror(-ret));
1480 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1481 wpa_driver_nl80211_event_receive, drv,
1482 drv->nl_handle_event);
1487 nl_cache_free(drv->nl_cache_event);
1489 nl_cache_free(drv->nl_cache);
1491 nl80211_handle_destroy(drv->nl_handle_event);
1493 nl80211_handle_destroy(drv->nl_handle);
1495 nl_cb_put(drv->nl_cb);
1501 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1503 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1505 * This may be for any interface; use ifdown event to disable
1511 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1513 struct wpa_driver_nl80211_data *drv = ctx;
1514 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1515 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1516 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1517 "after rfkill unblock");
1520 /* rtnetlink ifup handler will report interface as enabled */
1525 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1526 * @ctx: context to be used when calling wpa_supplicant functions,
1527 * e.g., wpa_supplicant_event()
1528 * @ifname: interface name, e.g., wlan0
1529 * Returns: Pointer to private data, %NULL on failure
1531 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1533 struct wpa_driver_nl80211_data *drv;
1534 struct netlink_config *cfg;
1535 struct rfkill_config *rcfg;
1536 struct i802_bss *bss;
1538 drv = os_zalloc(sizeof(*drv));
1542 bss = &drv->first_bss;
1544 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1545 drv->monitor_ifidx = -1;
1546 drv->monitor_sock = -1;
1547 drv->ioctl_sock = -1;
1549 if (wpa_driver_nl80211_init_nl(drv)) {
1554 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1555 if (drv->ioctl_sock < 0) {
1556 perror("socket(PF_INET,SOCK_DGRAM)");
1560 cfg = os_zalloc(sizeof(*cfg));
1564 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1565 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1566 drv->netlink = netlink_init(cfg);
1567 if (drv->netlink == NULL) {
1572 rcfg = os_zalloc(sizeof(*rcfg));
1576 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1577 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1578 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1579 drv->rfkill = rfkill_init(rcfg);
1580 if (drv->rfkill == NULL) {
1581 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1585 if (wpa_driver_nl80211_finish_drv_init(drv))
1591 rfkill_deinit(drv->rfkill);
1592 netlink_deinit(drv->netlink);
1593 if (drv->ioctl_sock >= 0)
1594 close(drv->ioctl_sock);
1596 genl_family_put(drv->nl80211);
1597 nl_cache_free(drv->nl_cache);
1598 nl80211_handle_destroy(drv->nl_handle);
1599 nl_cb_put(drv->nl_cb);
1600 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1607 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1608 struct nl_handle *nl_handle,
1609 u16 type, const u8 *match, size_t match_len)
1614 msg = nlmsg_alloc();
1618 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1619 NL80211_CMD_REGISTER_ACTION, 0);
1621 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1622 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1623 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1625 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1628 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1629 "failed (type=%u): ret=%d (%s)",
1630 type, ret, strerror(-ret));
1631 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1633 goto nla_put_failure;
1642 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1643 const u8 *match, size_t match_len)
1645 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1646 return nl80211_register_frame(drv, drv->nl_handle_event,
1647 type, match, match_len);
1651 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1654 /* GAS Initial Request */
1655 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1657 /* GAS Initial Response */
1658 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1660 /* GAS Comeback Request */
1661 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1663 /* GAS Comeback Response */
1664 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1666 /* P2P Public Action */
1667 if (nl80211_register_action_frame(drv,
1668 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1672 if (nl80211_register_action_frame(drv,
1673 (u8 *) "\x7f\x50\x6f\x9a\x09",
1676 #endif /* CONFIG_P2P */
1678 /* FT Action frames */
1679 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1682 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1683 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1689 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1691 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1696 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1698 struct i802_bss *bss = &drv->first_bss;
1699 int send_rfkill_event = 0;
1701 drv->ifindex = if_nametoindex(bss->ifname);
1702 drv->first_bss.ifindex = drv->ifindex;
1705 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1706 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1707 "use managed mode");
1710 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1711 if (rfkill_is_blocked(drv->rfkill)) {
1712 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1713 "interface '%s' due to rfkill",
1715 drv->if_disabled = 1;
1716 send_rfkill_event = 1;
1718 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1719 "interface '%s' UP", bss->ifname);
1724 if (wpa_driver_nl80211_capa(drv))
1727 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1728 1, IF_OPER_DORMANT);
1729 #endif /* HOSTAPD */
1731 if (nl80211_register_action_frames(drv) < 0) {
1732 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1733 "frame processing - ignore for now");
1735 * Older kernel versions did not support this, so ignore the
1736 * error for now. Some functionality may not be available
1741 if (send_rfkill_event) {
1742 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1750 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1754 msg = nlmsg_alloc();
1758 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1759 0, NL80211_CMD_DEL_BEACON, 0);
1760 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1762 return send_and_recv_msgs(drv, msg, NULL, NULL);
1769 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1770 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1772 * Shut down driver interface and processing of driver events. Free
1773 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1775 static void wpa_driver_nl80211_deinit(void *priv)
1777 struct i802_bss *bss = priv;
1778 struct wpa_driver_nl80211_data *drv = bss->drv;
1780 if (drv->nl_handle_preq)
1781 wpa_driver_nl80211_probe_req_report(bss, 0);
1782 if (drv->added_if_into_bridge) {
1783 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1785 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1786 "interface %s from bridge %s: %s",
1787 bss->ifname, drv->brname, strerror(errno));
1789 if (drv->added_bridge) {
1790 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1791 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1793 drv->brname, strerror(errno));
1796 nl80211_remove_monitor_interface(drv);
1798 if (drv->nlmode == NL80211_IFTYPE_AP)
1799 wpa_driver_nl80211_del_beacon(drv);
1802 if (drv->last_freq_ht) {
1803 /* Clear HT flags from the driver */
1804 struct hostapd_freq_params freq;
1805 os_memset(&freq, 0, sizeof(freq));
1806 freq.freq = drv->last_freq;
1807 i802_set_freq(priv, &freq);
1810 if (drv->eapol_sock >= 0) {
1811 eloop_unregister_read_sock(drv->eapol_sock);
1812 close(drv->eapol_sock);
1815 if (drv->if_indices != drv->default_if_indices)
1816 os_free(drv->if_indices);
1817 #endif /* HOSTAPD */
1819 if (drv->disable_11b_rates)
1820 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1822 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1823 netlink_deinit(drv->netlink);
1824 rfkill_deinit(drv->rfkill);
1826 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1828 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1829 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1831 if (drv->ioctl_sock >= 0)
1832 close(drv->ioctl_sock);
1834 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1835 genl_family_put(drv->nl80211);
1836 nl_cache_free(drv->nl_cache);
1837 nl_cache_free(drv->nl_cache_event);
1838 nl80211_handle_destroy(drv->nl_handle);
1839 nl80211_handle_destroy(drv->nl_handle_event);
1840 nl_cb_put(drv->nl_cb);
1842 os_free(drv->filter_ssids);
1849 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1850 * @eloop_ctx: Driver private data
1851 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1853 * This function can be used as registered timeout when starting a scan to
1854 * generate a scan completed event if the driver does not report this.
1856 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1858 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1859 if (drv->ap_scan_as_station) {
1860 wpa_driver_nl80211_set_mode(&drv->first_bss,
1862 drv->ap_scan_as_station = 0;
1864 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1865 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1870 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1871 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1872 * @params: Scan parameters
1873 * Returns: 0 on success, -1 on failure
1875 static int wpa_driver_nl80211_scan(void *priv,
1876 struct wpa_driver_scan_params *params)
1878 struct i802_bss *bss = priv;
1879 struct wpa_driver_nl80211_data *drv = bss->drv;
1880 int ret = 0, timeout;
1881 struct nl_msg *msg, *ssids, *freqs;
1884 msg = nlmsg_alloc();
1885 ssids = nlmsg_alloc();
1886 freqs = nlmsg_alloc();
1887 if (!msg || !ssids || !freqs) {
1894 os_free(drv->filter_ssids);
1895 drv->filter_ssids = params->filter_ssids;
1896 params->filter_ssids = NULL;
1897 drv->num_filter_ssids = params->num_filter_ssids;
1899 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1900 NL80211_CMD_TRIGGER_SCAN, 0);
1902 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1904 for (i = 0; i < params->num_ssids; i++) {
1905 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1906 params->ssids[i].ssid,
1907 params->ssids[i].ssid_len);
1908 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1909 params->ssids[i].ssid);
1911 if (params->num_ssids)
1912 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1914 if (params->extra_ies) {
1915 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1916 params->extra_ies, params->extra_ies_len);
1917 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1921 if (params->freqs) {
1922 for (i = 0; params->freqs[i]; i++) {
1923 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1924 "MHz", params->freqs[i]);
1925 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1927 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1930 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1933 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1934 "(%s)", ret, strerror(-ret));
1936 if (drv->nlmode == NL80211_IFTYPE_AP) {
1938 * mac80211 does not allow scan requests in AP mode, so
1939 * try to do this in station mode.
1941 if (wpa_driver_nl80211_set_mode(bss,
1942 IEEE80211_MODE_INFRA))
1943 goto nla_put_failure;
1945 if (wpa_driver_nl80211_scan(drv, params)) {
1946 wpa_driver_nl80211_set_mode(bss,
1948 goto nla_put_failure;
1951 /* Restore AP mode when processing scan results */
1952 drv->ap_scan_as_station = 1;
1955 goto nla_put_failure;
1957 goto nla_put_failure;
1958 #endif /* HOSTAPD */
1961 /* Not all drivers generate "scan completed" wireless event, so try to
1962 * read results after a timeout. */
1964 if (drv->scan_complete_events) {
1966 * The driver seems to deliver events to notify when scan is
1967 * complete, so use longer timeout to avoid race conditions
1968 * with scanning and following association request.
1972 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1973 "seconds", ret, timeout);
1974 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1975 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1986 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1988 const u8 *end, *pos;
1994 end = ies + ies_len;
1996 while (pos + 1 < end) {
1997 if (pos + 2 + pos[1] > end)
2008 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2009 const u8 *ie, size_t ie_len)
2014 if (drv->filter_ssids == NULL)
2017 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2021 for (i = 0; i < drv->num_filter_ssids; i++) {
2022 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2023 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2032 struct nl80211_bss_info_arg {
2033 struct wpa_driver_nl80211_data *drv;
2034 struct wpa_scan_results *res;
2037 static int bss_info_handler(struct nl_msg *msg, void *arg)
2039 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2040 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2041 struct nlattr *bss[NL80211_BSS_MAX + 1];
2042 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2043 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2044 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2045 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2046 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2047 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2048 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2049 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2050 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2051 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2052 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2053 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2055 struct nl80211_bss_info_arg *_arg = arg;
2056 struct wpa_scan_results *res = _arg->res;
2057 struct wpa_scan_res **tmp;
2058 struct wpa_scan_res *r;
2059 const u8 *ie, *beacon_ie;
2060 size_t ie_len, beacon_ie_len;
2063 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2064 genlmsg_attrlen(gnlh, 0), NULL);
2065 if (!tb[NL80211_ATTR_BSS])
2067 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2070 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2071 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2072 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2077 if (bss[NL80211_BSS_BEACON_IES]) {
2078 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2079 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2085 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2086 ie ? ie_len : beacon_ie_len))
2089 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2092 if (bss[NL80211_BSS_BSSID])
2093 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2095 if (bss[NL80211_BSS_FREQUENCY])
2096 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2097 if (bss[NL80211_BSS_BEACON_INTERVAL])
2098 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2099 if (bss[NL80211_BSS_CAPABILITY])
2100 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2101 r->flags |= WPA_SCAN_NOISE_INVALID;
2102 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2103 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2104 r->level /= 100; /* mBm to dBm */
2105 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2106 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2107 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2108 r->flags |= WPA_SCAN_LEVEL_INVALID;
2110 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2111 if (bss[NL80211_BSS_TSF])
2112 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2113 if (bss[NL80211_BSS_SEEN_MS_AGO])
2114 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2116 pos = (u8 *) (r + 1);
2118 os_memcpy(pos, ie, ie_len);
2121 r->beacon_ie_len = beacon_ie_len;
2123 os_memcpy(pos, beacon_ie, beacon_ie_len);
2125 if (bss[NL80211_BSS_STATUS]) {
2126 enum nl80211_bss_status status;
2127 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2129 case NL80211_BSS_STATUS_AUTHENTICATED:
2130 r->flags |= WPA_SCAN_AUTHENTICATED;
2132 case NL80211_BSS_STATUS_ASSOCIATED:
2133 r->flags |= WPA_SCAN_ASSOCIATED;
2140 tmp = os_realloc(res->res,
2141 (res->num + 1) * sizeof(struct wpa_scan_res *));
2146 tmp[res->num++] = r;
2153 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2156 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2157 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2158 "mismatch (" MACSTR ")", MAC2STR(addr));
2159 wpa_driver_nl80211_mlme(drv, addr,
2160 NL80211_CMD_DEAUTHENTICATE,
2161 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2166 static void wpa_driver_nl80211_check_bss_status(
2167 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2171 for (i = 0; i < res->num; i++) {
2172 struct wpa_scan_res *r = res->res[i];
2173 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2174 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2175 "indicates BSS status with " MACSTR
2176 " as authenticated",
2178 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2179 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2180 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2182 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2183 " in local state (auth=" MACSTR
2184 " assoc=" MACSTR ")",
2185 MAC2STR(drv->auth_bssid),
2186 MAC2STR(drv->bssid));
2187 clear_state_mismatch(drv, r->bssid);
2191 if (r->flags & WPA_SCAN_ASSOCIATED) {
2192 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2193 "indicate BSS status with " MACSTR
2196 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2198 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2199 "(not associated) does not match "
2201 clear_state_mismatch(drv, r->bssid);
2202 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2203 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2205 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2206 "(associated with " MACSTR ") does "
2207 "not match with BSS state",
2208 MAC2STR(drv->bssid));
2209 clear_state_mismatch(drv, r->bssid);
2210 clear_state_mismatch(drv, drv->bssid);
2217 static void wpa_scan_results_free(struct wpa_scan_results *res)
2224 for (i = 0; i < res->num; i++)
2225 os_free(res->res[i]);
2231 static struct wpa_scan_results *
2232 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2235 struct wpa_scan_results *res;
2237 struct nl80211_bss_info_arg arg;
2239 res = os_zalloc(sizeof(*res));
2242 msg = nlmsg_alloc();
2244 goto nla_put_failure;
2246 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2247 NL80211_CMD_GET_SCAN, 0);
2248 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2252 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2255 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2256 (unsigned long) res->num);
2259 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2260 "(%s)", ret, strerror(-ret));
2263 wpa_scan_results_free(res);
2269 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2270 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2271 * Returns: Scan results on success, -1 on failure
2273 static struct wpa_scan_results *
2274 wpa_driver_nl80211_get_scan_results(void *priv)
2276 struct i802_bss *bss = priv;
2277 struct wpa_driver_nl80211_data *drv = bss->drv;
2278 struct wpa_scan_results *res;
2280 res = nl80211_get_scan_results(drv);
2282 wpa_driver_nl80211_check_bss_status(drv, res);
2287 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2289 struct wpa_scan_results *res;
2292 res = nl80211_get_scan_results(drv);
2294 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2298 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2299 for (i = 0; i < res->num; i++) {
2300 struct wpa_scan_res *r = res->res[i];
2301 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2302 (int) i, (int) res->num, MAC2STR(r->bssid),
2303 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2304 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2307 wpa_scan_results_free(res);
2311 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2312 enum wpa_alg alg, const u8 *addr,
2313 int key_idx, int set_tx,
2314 const u8 *seq, size_t seq_len,
2315 const u8 *key, size_t key_len)
2317 struct i802_bss *bss = priv;
2318 struct wpa_driver_nl80211_data *drv = bss->drv;
2319 int ifindex = if_nametoindex(ifname);
2323 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2324 "set_tx=%d seq_len=%lu key_len=%lu",
2325 __func__, ifindex, alg, addr, key_idx, set_tx,
2326 (unsigned long) seq_len, (unsigned long) key_len);
2328 msg = nlmsg_alloc();
2332 if (alg == WPA_ALG_NONE) {
2333 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2334 0, NL80211_CMD_DEL_KEY, 0);
2336 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2337 0, NL80211_CMD_NEW_KEY, 0);
2338 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2342 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2343 WLAN_CIPHER_SUITE_WEP40);
2345 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2346 WLAN_CIPHER_SUITE_WEP104);
2349 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2350 WLAN_CIPHER_SUITE_TKIP);
2353 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2354 WLAN_CIPHER_SUITE_CCMP);
2357 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2358 WLAN_CIPHER_SUITE_AES_CMAC);
2361 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2362 "algorithm %d", __func__, alg);
2369 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2371 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2373 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2374 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2376 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2379 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2380 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2383 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2384 ret, strerror(-ret));
2387 * If we failed or don't need to set the default TX key (below),
2390 if (ret || !set_tx || alg == WPA_ALG_NONE)
2396 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2398 #endif /* HOSTAPD */
2400 msg = nlmsg_alloc();
2404 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2405 0, NL80211_CMD_SET_KEY, 0);
2406 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2408 if (alg == WPA_ALG_IGTK)
2409 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2411 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2413 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2417 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2418 "err=%d %s)", ret, strerror(-ret));
2426 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2427 int key_idx, int defkey,
2428 const u8 *seq, size_t seq_len,
2429 const u8 *key, size_t key_len)
2431 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2435 if (defkey && alg == WPA_ALG_IGTK)
2436 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2438 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2440 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2445 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2446 WLAN_CIPHER_SUITE_WEP40);
2448 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2449 WLAN_CIPHER_SUITE_WEP104);
2452 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2455 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2458 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2459 WLAN_CIPHER_SUITE_AES_CMAC);
2462 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2463 "algorithm %d", __func__, alg);
2468 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2470 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2472 nla_nest_end(msg, key_attr);
2480 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2484 struct nlattr *nl_keys, *nl_key;
2486 for (i = 0; i < 4; i++) {
2487 if (!params->wep_key[i])
2495 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2497 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2499 goto nla_put_failure;
2501 for (i = 0; i < 4; i++) {
2502 if (!params->wep_key[i])
2505 nl_key = nla_nest_start(msg, i);
2507 goto nla_put_failure;
2509 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2510 params->wep_key[i]);
2511 if (params->wep_key_len[i] == 5)
2512 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2513 WLAN_CIPHER_SUITE_WEP40);
2515 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2516 WLAN_CIPHER_SUITE_WEP104);
2518 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2520 if (i == params->wep_tx_keyidx)
2521 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2523 nla_nest_end(msg, nl_key);
2525 nla_nest_end(msg, nl_keys);
2534 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2535 const u8 *addr, int cmd, u16 reason_code,
2536 int local_state_change)
2541 msg = nlmsg_alloc();
2545 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2547 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2548 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2549 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2550 if (local_state_change)
2551 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2553 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2556 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2557 "(%s)", ret, strerror(-ret));
2558 goto nla_put_failure;
2568 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2569 const u8 *addr, int reason_code)
2571 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2572 __func__, MAC2STR(addr), reason_code);
2573 drv->associated = 0;
2574 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2579 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2582 struct i802_bss *bss = priv;
2583 struct wpa_driver_nl80211_data *drv = bss->drv;
2584 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2585 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2586 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2587 __func__, MAC2STR(addr), reason_code);
2588 drv->associated = 0;
2589 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2594 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2597 struct i802_bss *bss = priv;
2598 struct wpa_driver_nl80211_data *drv = bss->drv;
2599 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2600 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2601 wpa_printf(MSG_DEBUG, "%s", __func__);
2602 drv->associated = 0;
2603 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2608 static int wpa_driver_nl80211_authenticate(
2609 void *priv, struct wpa_driver_auth_params *params)
2611 struct i802_bss *bss = priv;
2612 struct wpa_driver_nl80211_data *drv = bss->drv;
2615 enum nl80211_auth_type type;
2618 drv->associated = 0;
2619 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2620 /* FIX: IBSS mode */
2621 if (drv->nlmode != NL80211_IFTYPE_STATION)
2622 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2624 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2628 msg = nlmsg_alloc();
2632 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2635 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2636 NL80211_CMD_AUTHENTICATE, 0);
2638 for (i = 0; i < 4; i++) {
2639 if (!params->wep_key[i])
2641 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2643 i == params->wep_tx_keyidx, NULL, 0,
2645 params->wep_key_len[i]);
2646 if (params->wep_tx_keyidx != i)
2648 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2649 params->wep_key[i], params->wep_key_len[i])) {
2655 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2656 if (params->bssid) {
2657 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2658 MAC2STR(params->bssid));
2659 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2662 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2663 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2666 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2667 params->ssid, params->ssid_len);
2668 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2671 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2673 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2674 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2675 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2676 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2677 type = NL80211_AUTHTYPE_SHARED_KEY;
2678 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2679 type = NL80211_AUTHTYPE_NETWORK_EAP;
2680 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2681 type = NL80211_AUTHTYPE_FT;
2683 goto nla_put_failure;
2684 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2685 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2686 if (params->local_state_change) {
2687 wpa_printf(MSG_DEBUG, " * Local state change only");
2688 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2691 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2694 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2695 "(%s)", ret, strerror(-ret));
2697 if (ret == -EALREADY && count == 1 && params->bssid &&
2698 !params->local_state_change) {
2700 * mac80211 does not currently accept new
2701 * authentication if we are already authenticated. As a
2702 * workaround, force deauthentication and try again.
2704 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2705 "after forced deauthentication");
2706 wpa_driver_nl80211_deauthenticate(
2708 WLAN_REASON_PREV_AUTH_NOT_VALID);
2712 goto nla_put_failure;
2715 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2724 struct phy_info_arg {
2726 struct hostapd_hw_modes *modes;
2729 static int phy_info_handler(struct nl_msg *msg, void *arg)
2731 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2732 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2733 struct phy_info_arg *phy_info = arg;
2735 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2737 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2738 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2739 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2740 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2741 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2742 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2743 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2744 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2747 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2748 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2749 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2750 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2753 struct nlattr *nl_band;
2754 struct nlattr *nl_freq;
2755 struct nlattr *nl_rate;
2756 int rem_band, rem_freq, rem_rate;
2757 struct hostapd_hw_modes *mode;
2758 int idx, mode_is_set;
2760 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2761 genlmsg_attrlen(gnlh, 0), NULL);
2763 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2766 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2767 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2770 phy_info->modes = mode;
2774 mode = &phy_info->modes[*(phy_info->num_modes)];
2775 memset(mode, 0, sizeof(*mode));
2776 *(phy_info->num_modes) += 1;
2778 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2779 nla_len(nl_band), NULL);
2781 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2782 mode->ht_capab = nla_get_u16(
2783 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2786 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2787 mode->a_mpdu_params |= nla_get_u8(
2788 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2792 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2793 mode->a_mpdu_params |= nla_get_u8(
2794 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2798 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2799 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2801 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2802 os_memcpy(mode->mcs_set, mcs, 16);
2805 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2806 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2807 nla_len(nl_freq), freq_policy);
2808 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2810 mode->num_channels++;
2813 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2814 if (!mode->channels)
2819 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2820 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2821 nla_len(nl_freq), freq_policy);
2822 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2825 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2826 mode->channels[idx].flag = 0;
2829 /* crude heuristic */
2830 if (mode->channels[idx].freq < 4000)
2831 mode->mode = HOSTAPD_MODE_IEEE80211B;
2833 mode->mode = HOSTAPD_MODE_IEEE80211A;
2837 /* crude heuristic */
2838 if (mode->channels[idx].freq < 4000)
2839 if (mode->channels[idx].freq == 2484)
2840 mode->channels[idx].chan = 14;
2842 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2844 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2846 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2847 mode->channels[idx].flag |=
2848 HOSTAPD_CHAN_DISABLED;
2849 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2850 mode->channels[idx].flag |=
2851 HOSTAPD_CHAN_PASSIVE_SCAN;
2852 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2853 mode->channels[idx].flag |=
2854 HOSTAPD_CHAN_NO_IBSS;
2855 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2856 mode->channels[idx].flag |=
2859 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2860 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2861 mode->channels[idx].max_tx_power =
2862 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2867 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2868 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2869 nla_len(nl_rate), rate_policy);
2870 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2875 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2881 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2882 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2883 nla_len(nl_rate), rate_policy);
2884 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2886 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2888 /* crude heuristic */
2889 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2890 mode->rates[idx] > 200)
2891 mode->mode = HOSTAPD_MODE_IEEE80211G;
2900 static struct hostapd_hw_modes *
2901 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2904 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2905 int i, mode11g_idx = -1;
2907 /* If only 802.11g mode is included, use it to construct matching
2908 * 802.11b mode data. */
2910 for (m = 0; m < *num_modes; m++) {
2911 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2912 return modes; /* 802.11b already included */
2913 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2917 if (mode11g_idx < 0)
2918 return modes; /* 2.4 GHz band not supported at all */
2920 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2922 return modes; /* Could not add 802.11b mode */
2924 mode = &nmodes[*num_modes];
2925 os_memset(mode, 0, sizeof(*mode));
2929 mode->mode = HOSTAPD_MODE_IEEE80211B;
2931 mode11g = &modes[mode11g_idx];
2932 mode->num_channels = mode11g->num_channels;
2933 mode->channels = os_malloc(mode11g->num_channels *
2934 sizeof(struct hostapd_channel_data));
2935 if (mode->channels == NULL) {
2937 return modes; /* Could not add 802.11b mode */
2939 os_memcpy(mode->channels, mode11g->channels,
2940 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2942 mode->num_rates = 0;
2943 mode->rates = os_malloc(4 * sizeof(int));
2944 if (mode->rates == NULL) {
2945 os_free(mode->channels);
2947 return modes; /* Could not add 802.11b mode */
2950 for (i = 0; i < mode11g->num_rates; i++) {
2951 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2952 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2954 mode->rates[mode->num_rates] = mode11g->rates[i];
2956 if (mode->num_rates == 4)
2960 if (mode->num_rates == 0) {
2961 os_free(mode->channels);
2962 os_free(mode->rates);
2964 return modes; /* No 802.11b rates */
2967 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2974 static struct hostapd_hw_modes *
2975 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2977 struct i802_bss *bss = priv;
2978 struct wpa_driver_nl80211_data *drv = bss->drv;
2980 struct phy_info_arg result = {
2981 .num_modes = num_modes,
2988 msg = nlmsg_alloc();
2992 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2993 0, NL80211_CMD_GET_WIPHY, 0);
2995 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2997 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2998 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3004 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3005 const void *data, size_t len,
3009 0x00, 0x00, /* radiotap version */
3010 0x0e, 0x00, /* radiotap length */
3011 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3012 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3014 0x00, 0x00, /* RX and TX flags to indicate that */
3015 0x00, 0x00, /* this is the injected frame directly */
3017 struct iovec iov[2] = {
3019 .iov_base = &rtap_hdr,
3020 .iov_len = sizeof(rtap_hdr),
3023 .iov_base = (void *) data,
3027 struct msghdr msg = {
3032 .msg_control = NULL,
3033 .msg_controllen = 0,
3038 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3040 return sendmsg(drv->monitor_sock, &msg, 0);
3044 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3047 struct i802_bss *bss = priv;
3048 struct wpa_driver_nl80211_data *drv = bss->drv;
3049 struct ieee80211_mgmt *mgmt;
3053 mgmt = (struct ieee80211_mgmt *) data;
3054 fc = le_to_host16(mgmt->frame_control);
3056 if (drv->nlmode == NL80211_IFTYPE_STATION &&
3057 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3058 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3060 * The use of last_mgmt_freq is a bit of a hack,
3061 * but it works due to the single-threaded nature
3062 * of wpa_supplicant.
3064 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3065 data, data_len, NULL);
3068 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3069 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3071 * Only one of the authentication frame types is encrypted.
3072 * In order for static WEP encryption to work properly (i.e.,
3073 * to not encrypt the frame), we need to tell mac80211 about
3074 * the frames that must not be encrypted.
3076 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3077 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3078 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3082 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3086 static int wpa_driver_nl80211_set_beacon(void *priv,
3087 const u8 *head, size_t head_len,
3088 const u8 *tail, size_t tail_len,
3089 int dtim_period, int beacon_int)
3091 struct i802_bss *bss = priv;
3092 struct wpa_driver_nl80211_data *drv = bss->drv;
3094 u8 cmd = NL80211_CMD_NEW_BEACON;
3097 int ifindex = if_nametoindex(bss->ifname);
3099 beacon_set = bss->beacon_set;
3101 msg = nlmsg_alloc();
3105 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3108 cmd = NL80211_CMD_SET_BEACON;
3110 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3112 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3113 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3114 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3115 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3116 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3118 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3120 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3121 ret, strerror(-ret));
3123 bss->beacon_set = 1;
3131 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3132 int freq, int ht_enabled,
3133 int sec_channel_offset)
3138 msg = nlmsg_alloc();
3142 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3143 NL80211_CMD_SET_WIPHY, 0);
3145 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3146 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3148 switch (sec_channel_offset) {
3150 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3151 NL80211_CHAN_HT40MINUS);
3154 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3155 NL80211_CHAN_HT40PLUS);
3158 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3164 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3167 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3168 "%d (%s)", freq, ret, strerror(-ret));
3174 static int wpa_driver_nl80211_sta_add(void *priv,
3175 struct hostapd_sta_add_params *params)
3177 struct i802_bss *bss = priv;
3178 struct wpa_driver_nl80211_data *drv = bss->drv;
3182 msg = nlmsg_alloc();
3186 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3187 0, NL80211_CMD_NEW_STATION, 0);
3189 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3190 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3191 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3192 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3193 params->supp_rates);
3194 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3195 params->listen_interval);
3196 if (params->ht_capabilities) {
3197 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3198 sizeof(*params->ht_capabilities),
3199 params->ht_capabilities);
3202 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3204 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3205 "result: %d (%s)", ret, strerror(-ret));
3213 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3215 struct i802_bss *bss = priv;
3216 struct wpa_driver_nl80211_data *drv = bss->drv;
3220 msg = nlmsg_alloc();
3224 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3225 0, NL80211_CMD_DEL_STATION, 0);
3227 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3228 if_nametoindex(bss->ifname));
3229 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3231 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3240 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3245 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3248 /* stop listening for EAPOL on this interface */
3249 del_ifidx(drv, ifidx);
3250 #endif /* HOSTAPD */
3252 msg = nlmsg_alloc();
3254 goto nla_put_failure;
3256 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3257 0, NL80211_CMD_DEL_INTERFACE, 0);
3258 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3260 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3263 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3267 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3269 enum nl80211_iftype iftype,
3270 const u8 *addr, int wds)
3272 struct nl_msg *msg, *flags = NULL;
3276 msg = nlmsg_alloc();
3280 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3281 0, NL80211_CMD_NEW_INTERFACE, 0);
3282 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3283 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3284 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3286 if (iftype == NL80211_IFTYPE_MONITOR) {
3289 flags = nlmsg_alloc();
3291 goto nla_put_failure;
3293 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3295 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3300 goto nla_put_failure;
3302 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3305 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3308 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3309 ifname, ret, strerror(-ret));
3313 ifidx = if_nametoindex(ifname);
3314 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3321 /* start listening for EAPOL on this interface */
3322 add_ifidx(drv, ifidx);
3323 #endif /* HOSTAPD */
3325 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3326 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3327 nl80211_remove_iface(drv, ifidx);
3335 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3336 const char *ifname, enum nl80211_iftype iftype,
3337 const u8 *addr, int wds)
3341 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3343 /* if error occured and interface exists already */
3344 if (ret == -ENFILE && if_nametoindex(ifname)) {
3345 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3347 /* Try to remove the interface that was already there. */
3348 nl80211_remove_iface(drv, if_nametoindex(ifname));
3350 /* Try to create the interface again */
3351 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3355 if (ret >= 0 && drv->disable_11b_rates)
3356 nl80211_disable_11b_rates(drv, ret, 1);
3362 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3364 struct ieee80211_hdr *hdr;
3366 union wpa_event_data event;
3368 hdr = (struct ieee80211_hdr *) buf;
3369 fc = le_to_host16(hdr->frame_control);
3371 os_memset(&event, 0, sizeof(event));
3372 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3373 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3374 event.tx_status.dst = hdr->addr1;
3375 event.tx_status.data = buf;
3376 event.tx_status.data_len = len;
3377 event.tx_status.ack = ok;
3378 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3382 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3383 u8 *buf, size_t len)
3385 union wpa_event_data event;
3386 os_memset(&event, 0, sizeof(event));
3387 event.rx_from_unknown.frame = buf;
3388 event.rx_from_unknown.len = len;
3389 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3393 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3394 u8 *buf, size_t len, int datarate, int ssi_signal)
3396 struct ieee80211_hdr *hdr;
3398 union wpa_event_data event;
3400 hdr = (struct ieee80211_hdr *) buf;
3401 fc = le_to_host16(hdr->frame_control);
3403 switch (WLAN_FC_GET_TYPE(fc)) {
3404 case WLAN_FC_TYPE_MGMT:
3405 os_memset(&event, 0, sizeof(event));
3406 event.rx_mgmt.frame = buf;
3407 event.rx_mgmt.frame_len = len;
3408 event.rx_mgmt.datarate = datarate;
3409 event.rx_mgmt.ssi_signal = ssi_signal;
3410 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3412 case WLAN_FC_TYPE_CTRL:
3413 /* can only get here with PS-Poll frames */
3414 wpa_printf(MSG_DEBUG, "CTRL");
3415 from_unknown_sta(drv, buf, len);
3417 case WLAN_FC_TYPE_DATA:
3418 from_unknown_sta(drv, buf, len);
3424 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3426 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3428 unsigned char buf[3000];
3429 struct ieee80211_radiotap_iterator iter;
3431 int datarate = 0, ssi_signal = 0;
3432 int injected = 0, failed = 0, rxflags = 0;
3434 len = recv(sock, buf, sizeof(buf), 0);
3440 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3441 printf("received invalid radiotap frame\n");
3446 ret = ieee80211_radiotap_iterator_next(&iter);
3450 printf("received invalid radiotap frame (%d)\n", ret);
3453 switch (iter.this_arg_index) {
3454 case IEEE80211_RADIOTAP_FLAGS:
3455 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3458 case IEEE80211_RADIOTAP_RX_FLAGS:
3461 case IEEE80211_RADIOTAP_TX_FLAGS:
3463 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3464 IEEE80211_RADIOTAP_F_TX_FAIL;
3466 case IEEE80211_RADIOTAP_DATA_RETRIES:
3468 case IEEE80211_RADIOTAP_CHANNEL:
3469 /* TODO: convert from freq/flags to channel number */
3471 case IEEE80211_RADIOTAP_RATE:
3472 datarate = *iter.this_arg * 5;
3474 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3475 ssi_signal = *iter.this_arg;
3480 if (rxflags && injected)
3484 handle_frame(drv, buf + iter.max_length,
3485 len - iter.max_length, datarate, ssi_signal);
3487 handle_tx_callback(drv->ctx, buf + iter.max_length,
3488 len - iter.max_length, !failed);
3493 * we post-process the filter code later and rewrite
3494 * this to the offset to the last instruction
3499 static struct sock_filter msock_filter_insns[] = {
3501 * do a little-endian load of the radiotap length field
3503 /* load lower byte into A */
3504 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3505 /* put it into X (== index register) */
3506 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3507 /* load upper byte into A */
3508 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3509 /* left-shift it by 8 */
3510 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3512 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3513 /* put result into X */
3514 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3517 * Allow management frames through, this also gives us those
3518 * management frames that we sent ourselves with status
3520 /* load the lower byte of the IEEE 802.11 frame control field */
3521 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3522 /* mask off frame type and version */
3523 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3524 /* accept frame if it's both 0, fall through otherwise */
3525 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3528 * TODO: add a bit to radiotap RX flags that indicates
3529 * that the sending station is not associated, then
3530 * add a filter here that filters on our DA and that flag
3531 * to allow us to deauth frames to that bad station.
3533 * Not a regression -- we didn't do it before either.
3538 * drop non-data frames
3540 /* load the lower byte of the frame control field */
3541 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3542 /* mask off QoS bit */
3543 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3544 /* drop non-data frames */
3545 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3547 /* load the upper byte of the frame control field */
3548 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3549 /* mask off toDS/fromDS */
3550 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3551 /* accept WDS frames */
3552 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3555 * add header length to index
3557 /* load the lower byte of the frame control field */
3558 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3559 /* mask off QoS bit */
3560 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3561 /* right shift it by 6 to give 0 or 2 */
3562 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3563 /* add data frame header length */
3564 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3565 /* add index, was start of 802.11 header */
3566 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3567 /* move to index, now start of LL header */
3568 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3571 * Accept empty data frames, we use those for
3574 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3575 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3578 * Accept EAPOL frames
3580 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3581 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3582 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3583 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3585 /* keep these last two statements or change the code below */
3586 /* return 0 == "DROP" */
3587 BPF_STMT(BPF_RET | BPF_K, 0),
3588 /* return ~0 == "keep all" */
3589 BPF_STMT(BPF_RET | BPF_K, ~0),
3592 static struct sock_fprog msock_filter = {
3593 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3594 .filter = msock_filter_insns,
3598 static int add_monitor_filter(int s)
3602 /* rewrite all PASS/FAIL jump offsets */
3603 for (idx = 0; idx < msock_filter.len; idx++) {
3604 struct sock_filter *insn = &msock_filter_insns[idx];
3606 if (BPF_CLASS(insn->code) == BPF_JMP) {
3607 if (insn->code == (BPF_JMP|BPF_JA)) {
3608 if (insn->k == PASS)
3609 insn->k = msock_filter.len - idx - 2;
3610 else if (insn->k == FAIL)
3611 insn->k = msock_filter.len - idx - 3;
3614 if (insn->jt == PASS)
3615 insn->jt = msock_filter.len - idx - 2;
3616 else if (insn->jt == FAIL)
3617 insn->jt = msock_filter.len - idx - 3;
3619 if (insn->jf == PASS)
3620 insn->jf = msock_filter.len - idx - 2;
3621 else if (insn->jf == FAIL)
3622 insn->jf = msock_filter.len - idx - 3;
3626 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3627 &msock_filter, sizeof(msock_filter))) {
3628 perror("SO_ATTACH_FILTER");
3636 static void nl80211_remove_monitor_interface(
3637 struct wpa_driver_nl80211_data *drv)
3639 if (drv->monitor_ifidx >= 0) {
3640 nl80211_remove_iface(drv, drv->monitor_ifidx);
3641 drv->monitor_ifidx = -1;
3643 if (drv->monitor_sock >= 0) {
3644 eloop_unregister_read_sock(drv->monitor_sock);
3645 close(drv->monitor_sock);
3646 drv->monitor_sock = -1;
3652 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3655 struct sockaddr_ll ll;
3659 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3660 buf[IFNAMSIZ - 1] = '\0';
3662 drv->monitor_ifidx =
3663 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3666 if (drv->monitor_ifidx < 0)
3669 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3672 memset(&ll, 0, sizeof(ll));
3673 ll.sll_family = AF_PACKET;
3674 ll.sll_ifindex = drv->monitor_ifidx;
3675 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3676 if (drv->monitor_sock < 0) {
3677 perror("socket[PF_PACKET,SOCK_RAW]");
3681 if (add_monitor_filter(drv->monitor_sock)) {
3682 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3683 "interface; do filtering in user space");
3684 /* This works, but will cost in performance. */
3687 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3688 perror("monitor socket bind");
3692 optlen = sizeof(optval);
3695 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3696 perror("Failed to set socket priority");
3700 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3702 printf("Could not register monitor read socket\n");
3708 nl80211_remove_monitor_interface(drv);
3713 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3715 static int wpa_driver_nl80211_hapd_send_eapol(
3716 void *priv, const u8 *addr, const u8 *data,
3717 size_t data_len, int encrypt, const u8 *own_addr)
3719 struct i802_bss *bss = priv;
3720 struct wpa_driver_nl80211_data *drv = bss->drv;
3721 struct ieee80211_hdr *hdr;
3726 int qos = sta->flags & WPA_STA_WMM;
3731 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3733 hdr = os_zalloc(len);
3735 printf("malloc() failed for i802_send_data(len=%lu)\n",
3736 (unsigned long) len);
3740 hdr->frame_control =
3741 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3742 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3744 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3745 #if 0 /* To be enabled if qos determination is added above */
3747 hdr->frame_control |=
3748 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3752 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3753 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3754 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3755 pos = (u8 *) (hdr + 1);
3757 #if 0 /* To be enabled if qos determination is added above */
3759 /* add an empty QoS header if needed */
3766 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3767 pos += sizeof(rfc1042_header);
3768 WPA_PUT_BE16(pos, ETH_P_PAE);
3770 memcpy(pos, data, data_len);
3772 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3774 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3776 (unsigned long) len, errno, strerror(errno));
3784 static u32 sta_flags_nl80211(int flags)
3788 if (flags & WPA_STA_AUTHORIZED)
3789 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3790 if (flags & WPA_STA_WMM)
3791 f |= BIT(NL80211_STA_FLAG_WME);
3792 if (flags & WPA_STA_SHORT_PREAMBLE)
3793 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3794 if (flags & WPA_STA_MFP)
3795 f |= BIT(NL80211_STA_FLAG_MFP);
3801 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3803 int flags_or, int flags_and)
3805 struct i802_bss *bss = priv;
3806 struct wpa_driver_nl80211_data *drv = bss->drv;
3807 struct nl_msg *msg, *flags = NULL;
3808 struct nl80211_sta_flag_update upd;
3810 msg = nlmsg_alloc();
3814 flags = nlmsg_alloc();
3820 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3821 0, NL80211_CMD_SET_STATION, 0);
3823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3824 if_nametoindex(bss->ifname));
3825 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3828 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3829 * can be removed eventually.
3831 if (total_flags & WPA_STA_AUTHORIZED)
3832 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3834 if (total_flags & WPA_STA_WMM)
3835 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3837 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3838 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3840 if (total_flags & WPA_STA_MFP)
3841 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3843 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3844 goto nla_put_failure;
3846 os_memset(&upd, 0, sizeof(upd));
3847 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3848 upd.set = sta_flags_nl80211(flags_or);
3849 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3853 return send_and_recv_msgs(drv, msg, NULL, NULL);
3860 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3861 struct wpa_driver_associate_params *params)
3864 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3866 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3867 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3868 nl80211_remove_monitor_interface(drv);
3872 /* TODO: setup monitor interface (and add code somewhere to remove this
3873 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3879 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3884 msg = nlmsg_alloc();
3888 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3889 NL80211_CMD_LEAVE_IBSS, 0);
3890 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3891 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3894 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3895 "(%s)", ret, strerror(-ret));
3896 goto nla_put_failure;
3900 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3908 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3909 struct wpa_driver_associate_params *params)
3915 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3917 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3918 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3924 msg = nlmsg_alloc();
3928 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3929 NL80211_CMD_JOIN_IBSS, 0);
3930 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3932 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3933 goto nla_put_failure;
3935 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3936 params->ssid, params->ssid_len);
3937 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3939 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3940 drv->ssid_len = params->ssid_len;
3942 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3943 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3945 ret = nl80211_set_conn_keys(params, msg);
3947 goto nla_put_failure;
3949 if (params->wpa_ie) {
3950 wpa_hexdump(MSG_DEBUG,
3951 " * Extra IEs for Beacon/Probe Response frames",
3952 params->wpa_ie, params->wpa_ie_len);
3953 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3957 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3960 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3961 ret, strerror(-ret));
3963 if (ret == -EALREADY && count == 1) {
3964 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3966 nl80211_leave_ibss(drv);
3971 goto nla_put_failure;
3974 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3982 static int wpa_driver_nl80211_connect(
3983 struct wpa_driver_nl80211_data *drv,
3984 struct wpa_driver_associate_params *params)
3987 enum nl80211_auth_type type;
3990 msg = nlmsg_alloc();
3994 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3995 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3996 NL80211_CMD_CONNECT, 0);
3998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3999 if (params->bssid) {
4000 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4001 MAC2STR(params->bssid));
4002 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4005 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4006 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4009 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4010 params->ssid, params->ssid_len);
4011 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4013 if (params->ssid_len > sizeof(drv->ssid))
4014 goto nla_put_failure;
4015 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4016 drv->ssid_len = params->ssid_len;
4018 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4020 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4023 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4024 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4025 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4026 type = NL80211_AUTHTYPE_SHARED_KEY;
4027 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4028 type = NL80211_AUTHTYPE_NETWORK_EAP;
4029 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4030 type = NL80211_AUTHTYPE_FT;
4032 goto nla_put_failure;
4034 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4035 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4037 if (params->wpa_ie && params->wpa_ie_len) {
4038 enum nl80211_wpa_versions ver;
4040 if (params->wpa_ie[0] == WLAN_EID_RSN)
4041 ver = NL80211_WPA_VERSION_2;
4043 ver = NL80211_WPA_VERSION_1;
4045 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4046 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4049 if (params->pairwise_suite != CIPHER_NONE) {
4052 switch (params->pairwise_suite) {
4054 cipher = WLAN_CIPHER_SUITE_WEP40;
4057 cipher = WLAN_CIPHER_SUITE_WEP104;
4060 cipher = WLAN_CIPHER_SUITE_CCMP;
4064 cipher = WLAN_CIPHER_SUITE_TKIP;
4067 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4070 if (params->group_suite != CIPHER_NONE) {
4073 switch (params->group_suite) {
4075 cipher = WLAN_CIPHER_SUITE_WEP40;
4078 cipher = WLAN_CIPHER_SUITE_WEP104;
4081 cipher = WLAN_CIPHER_SUITE_CCMP;
4085 cipher = WLAN_CIPHER_SUITE_TKIP;
4088 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4091 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4092 params->key_mgmt_suite == KEY_MGMT_PSK) {
4093 int mgmt = WLAN_AKM_SUITE_PSK;
4095 switch (params->key_mgmt_suite) {
4096 case KEY_MGMT_802_1X:
4097 mgmt = WLAN_AKM_SUITE_8021X;
4101 mgmt = WLAN_AKM_SUITE_PSK;
4104 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4107 ret = nl80211_set_conn_keys(params, msg);
4109 goto nla_put_failure;
4111 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4114 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4115 "(%s)", ret, strerror(-ret));
4116 goto nla_put_failure;
4119 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4128 static int wpa_driver_nl80211_associate(
4129 void *priv, struct wpa_driver_associate_params *params)
4131 struct i802_bss *bss = priv;
4132 struct wpa_driver_nl80211_data *drv = bss->drv;
4136 if (params->mode == IEEE80211_MODE_AP)
4137 return wpa_driver_nl80211_ap(drv, params);
4139 if (params->mode == IEEE80211_MODE_IBSS)
4140 return wpa_driver_nl80211_ibss(drv, params);
4142 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4143 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4145 return wpa_driver_nl80211_connect(drv, params);
4148 drv->associated = 0;
4150 msg = nlmsg_alloc();
4154 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4156 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4157 NL80211_CMD_ASSOCIATE, 0);
4159 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4160 if (params->bssid) {
4161 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4162 MAC2STR(params->bssid));
4163 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4166 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4167 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4168 drv->assoc_freq = params->freq;
4170 drv->assoc_freq = 0;
4172 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4173 params->ssid, params->ssid_len);
4174 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4176 if (params->ssid_len > sizeof(drv->ssid))
4177 goto nla_put_failure;
4178 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4179 drv->ssid_len = params->ssid_len;
4181 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4183 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4186 #ifdef CONFIG_IEEE80211W
4187 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4188 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4189 #endif /* CONFIG_IEEE80211W */
4191 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4193 if (params->prev_bssid) {
4194 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4195 MAC2STR(params->prev_bssid));
4196 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4197 params->prev_bssid);
4201 wpa_printf(MSG_DEBUG, " * P2P group");
4203 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4206 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4207 "(%s)", ret, strerror(-ret));
4208 nl80211_dump_scan(drv);
4209 goto nla_put_failure;
4212 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4221 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4222 int ifindex, int mode)
4227 msg = nlmsg_alloc();
4231 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4232 0, NL80211_CMD_SET_INTERFACE, 0);
4233 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4234 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4236 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4240 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4241 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4246 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4248 struct i802_bss *bss = priv;
4249 struct wpa_driver_nl80211_data *drv = bss->drv;
4256 nlmode = NL80211_IFTYPE_STATION;
4259 nlmode = NL80211_IFTYPE_ADHOC;
4262 nlmode = NL80211_IFTYPE_AP;
4268 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4269 drv->nlmode = nlmode;
4274 if (nlmode == drv->nlmode) {
4275 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4276 "requested mode - ignore error");
4278 goto done; /* Already in the requested mode */
4281 /* mac80211 doesn't allow mode changes while the device is up, so
4282 * take the device down, try to set the mode again, and bring the
4285 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4287 for (i = 0; i < 10; i++) {
4288 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4290 /* Try to set the mode again while the interface is
4292 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4293 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4299 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4301 os_sleep(0, 100000);
4305 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4306 "interface is down");
4307 drv->nlmode = nlmode;
4311 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4312 /* Setup additional AP mode functionality if needed */
4313 if (drv->monitor_ifidx < 0 &&
4314 nl80211_create_monitor_interface(drv))
4316 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4317 /* Remove additional AP mode functionality */
4318 nl80211_remove_monitor_interface(drv);
4319 bss->beacon_set = 0;
4323 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4324 "from %d failed", nlmode, drv->nlmode);
4330 static int wpa_driver_nl80211_get_capa(void *priv,
4331 struct wpa_driver_capa *capa)
4333 struct i802_bss *bss = priv;
4334 struct wpa_driver_nl80211_data *drv = bss->drv;
4335 if (!drv->has_capability)
4337 os_memcpy(capa, &drv->capa, sizeof(*capa));
4342 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4344 struct i802_bss *bss = priv;
4345 struct wpa_driver_nl80211_data *drv = bss->drv;
4347 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4348 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4349 drv->operstate = state;
4350 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4351 state ? IF_OPER_UP : IF_OPER_DORMANT);
4355 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4357 struct i802_bss *bss = priv;
4358 struct wpa_driver_nl80211_data *drv = bss->drv;
4360 struct nl80211_sta_flag_update upd;
4362 msg = nlmsg_alloc();
4366 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4367 0, NL80211_CMD_SET_STATION, 0);
4369 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4370 if_nametoindex(bss->ifname));
4371 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4373 os_memset(&upd, 0, sizeof(upd));
4374 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4376 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4377 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4379 return send_and_recv_msgs(drv, msg, NULL, NULL);
4387 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4392 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4394 for (i = 0; i < drv->num_if_indices; i++) {
4395 if (drv->if_indices[i] == 0) {
4396 drv->if_indices[i] = ifidx;
4401 if (drv->if_indices != drv->default_if_indices)
4402 old = drv->if_indices;
4406 drv->if_indices = os_realloc(old,
4407 sizeof(int) * (drv->num_if_indices + 1));
4408 if (!drv->if_indices) {
4410 drv->if_indices = drv->default_if_indices;
4412 drv->if_indices = old;
4413 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4415 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4418 os_memcpy(drv->if_indices, drv->default_if_indices,
4419 sizeof(drv->default_if_indices));
4420 drv->if_indices[drv->num_if_indices] = ifidx;
4421 drv->num_if_indices++;
4425 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4429 for (i = 0; i < drv->num_if_indices; i++) {
4430 if (drv->if_indices[i] == ifidx) {
4431 drv->if_indices[i] = 0;
4438 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4442 for (i = 0; i < drv->num_if_indices; i++)
4443 if (drv->if_indices[i] == ifidx)
4450 static inline int min_int(int a, int b)
4458 static int get_key_handler(struct nl_msg *msg, void *arg)
4460 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4461 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4463 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4464 genlmsg_attrlen(gnlh, 0), NULL);
4467 * TODO: validate the key index and mac address!
4468 * Otherwise, there's a race condition as soon as
4469 * the kernel starts sending key notifications.
4472 if (tb[NL80211_ATTR_KEY_SEQ])
4473 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4474 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4479 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4482 struct i802_bss *bss = priv;
4483 struct wpa_driver_nl80211_data *drv = bss->drv;
4486 msg = nlmsg_alloc();
4490 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4491 0, NL80211_CMD_GET_KEY, 0);
4494 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4495 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4496 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4500 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4506 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4509 struct i802_bss *bss = priv;
4510 struct wpa_driver_nl80211_data *drv = bss->drv;
4512 u8 rates[NL80211_MAX_SUPP_RATES];
4516 msg = nlmsg_alloc();
4520 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4521 NL80211_CMD_SET_BSS, 0);
4523 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4524 rates[rates_len++] = basic_rates[i] / 5;
4526 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4528 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4530 return send_and_recv_msgs(drv, msg, NULL, NULL);
4535 #endif /* HOSTAPD */
4538 /* Set kernel driver on given frequency (MHz) */
4539 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4541 struct i802_bss *bss = priv;
4542 struct wpa_driver_nl80211_data *drv = bss->drv;
4543 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4544 freq->sec_channel_offset);
4550 static int i802_set_rts(void *priv, int rts)
4552 struct i802_bss *bss = priv;
4553 struct wpa_driver_nl80211_data *drv = bss->drv;
4558 msg = nlmsg_alloc();
4567 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4568 0, NL80211_CMD_SET_WIPHY, 0);
4569 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4570 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4572 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4576 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4577 "%d (%s)", rts, ret, strerror(-ret));
4582 static int i802_set_frag(void *priv, int frag)
4584 struct i802_bss *bss = priv;
4585 struct wpa_driver_nl80211_data *drv = bss->drv;
4590 msg = nlmsg_alloc();
4599 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4600 0, NL80211_CMD_SET_WIPHY, 0);
4601 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4602 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4604 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4608 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4609 "%d: %d (%s)", frag, ret, strerror(-ret));
4614 static int i802_flush(void *priv)
4616 struct i802_bss *bss = priv;
4617 struct wpa_driver_nl80211_data *drv = bss->drv;
4620 msg = nlmsg_alloc();
4624 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4625 0, NL80211_CMD_DEL_STATION, 0);
4628 * XXX: FIX! this needs to flush all VLANs too
4630 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4631 if_nametoindex(bss->ifname));
4633 return send_and_recv_msgs(drv, msg, NULL, NULL);
4639 static int get_sta_handler(struct nl_msg *msg, void *arg)
4641 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4642 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4643 struct hostap_sta_driver_data *data = arg;
4644 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4645 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4646 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4647 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4648 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4649 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4650 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4653 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4654 genlmsg_attrlen(gnlh, 0), NULL);
4657 * TODO: validate the interface and mac address!
4658 * Otherwise, there's a race condition as soon as
4659 * the kernel starts sending station notifications.
4662 if (!tb[NL80211_ATTR_STA_INFO]) {
4663 wpa_printf(MSG_DEBUG, "sta stats missing!");
4666 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4667 tb[NL80211_ATTR_STA_INFO],
4669 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4673 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4674 data->inactive_msec =
4675 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4676 if (stats[NL80211_STA_INFO_RX_BYTES])
4677 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4678 if (stats[NL80211_STA_INFO_TX_BYTES])
4679 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4680 if (stats[NL80211_STA_INFO_RX_PACKETS])
4682 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4683 if (stats[NL80211_STA_INFO_TX_PACKETS])
4685 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4690 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4693 struct i802_bss *bss = priv;
4694 struct wpa_driver_nl80211_data *drv = bss->drv;
4697 os_memset(data, 0, sizeof(*data));
4698 msg = nlmsg_alloc();
4702 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4703 0, NL80211_CMD_GET_STATION, 0);
4705 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4706 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4708 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4714 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4715 int cw_min, int cw_max, int burst_time)
4717 struct i802_bss *bss = priv;
4718 struct wpa_driver_nl80211_data *drv = bss->drv;
4720 struct nlattr *txq, *params;
4722 msg = nlmsg_alloc();
4726 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4727 0, NL80211_CMD_SET_WIPHY, 0);
4729 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4731 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4733 goto nla_put_failure;
4735 /* We are only sending parameters for a single TXQ at a time */
4736 params = nla_nest_start(msg, 1);
4738 goto nla_put_failure;
4740 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4741 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4742 * 32 usec, so need to convert the value here. */
4743 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4744 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4745 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4746 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4748 nla_nest_end(msg, params);
4750 nla_nest_end(msg, txq);
4752 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4759 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4761 struct i802_bss *bss = priv;
4762 struct wpa_driver_nl80211_data *drv = bss->drv;
4765 msg = nlmsg_alloc();
4769 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4770 NL80211_CMD_SET_BSS, 0);
4773 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4775 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4777 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4779 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4781 return send_and_recv_msgs(drv, msg, NULL, NULL);
4787 static int i802_set_cts_protect(void *priv, int value)
4789 return i802_set_bss(priv, value, -1, -1);
4793 static int i802_set_preamble(void *priv, int value)
4795 return i802_set_bss(priv, -1, value, -1);
4799 static int i802_set_short_slot_time(void *priv, int value)
4801 return i802_set_bss(priv, -1, -1, value);
4805 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4806 const char *ifname, int vlan_id)
4808 struct i802_bss *bss = priv;
4809 struct wpa_driver_nl80211_data *drv = bss->drv;
4813 msg = nlmsg_alloc();
4817 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4818 0, NL80211_CMD_SET_STATION, 0);
4820 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4821 if_nametoindex(bss->ifname));
4822 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4823 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4824 if_nametoindex(ifname));
4826 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4828 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4829 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4830 MAC2STR(addr), ifname, vlan_id, ret,
4838 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4840 struct i802_bss *bss = priv;
4841 struct wpa_driver_nl80211_data *drv = bss->drv;
4842 char name[IFNAMSIZ + 1];
4844 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4845 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4846 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4848 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4851 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4852 return i802_set_sta_vlan(priv, addr, name, 0);
4854 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4855 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4861 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4863 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4864 struct sockaddr_ll lladdr;
4865 unsigned char buf[3000];
4867 socklen_t fromlen = sizeof(lladdr);
4869 len = recvfrom(sock, buf, sizeof(buf), 0,
4870 (struct sockaddr *)&lladdr, &fromlen);
4876 if (have_ifidx(drv, lladdr.sll_ifindex))
4877 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4881 static int i802_get_inact_sec(void *priv, const u8 *addr)
4883 struct hostap_sta_driver_data data;
4886 data.inactive_msec = (unsigned long) -1;
4887 ret = i802_read_sta_data(priv, &data, addr);
4888 if (ret || data.inactive_msec == (unsigned long) -1)
4890 return data.inactive_msec / 1000;
4894 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4903 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4906 struct i802_bss *bss = priv;
4907 struct ieee80211_mgmt mgmt;
4909 memset(&mgmt, 0, sizeof(mgmt));
4910 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4911 WLAN_FC_STYPE_DEAUTH);
4912 memcpy(mgmt.da, addr, ETH_ALEN);
4913 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4914 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4915 mgmt.u.deauth.reason_code = host_to_le16(reason);
4916 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4918 sizeof(mgmt.u.deauth));
4922 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4925 struct i802_bss *bss = priv;
4926 struct ieee80211_mgmt mgmt;
4928 memset(&mgmt, 0, sizeof(mgmt));
4929 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4930 WLAN_FC_STYPE_DISASSOC);
4931 memcpy(mgmt.da, addr, ETH_ALEN);
4932 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4933 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4934 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4935 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4937 sizeof(mgmt.u.disassoc));
4941 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4942 const char *brname, const char *ifname)
4945 char in_br[IFNAMSIZ];
4947 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4948 ifindex = if_nametoindex(brname);
4951 * Bridge was configured, but the bridge device does
4952 * not exist. Try to add it now.
4954 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4955 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4956 "bridge interface %s: %s",
4957 brname, strerror(errno));
4960 drv->added_bridge = 1;
4961 add_ifidx(drv, if_nametoindex(brname));
4964 if (linux_br_get(in_br, ifname) == 0) {
4965 if (os_strcmp(in_br, brname) == 0)
4966 return 0; /* already in the bridge */
4968 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4969 "bridge %s", ifname, in_br);
4970 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4971 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4972 "remove interface %s from bridge "
4974 ifname, brname, strerror(errno));
4979 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4981 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4982 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4983 "into bridge %s: %s",
4984 ifname, brname, strerror(errno));
4987 drv->added_if_into_bridge = 1;
4993 static void *i802_init(struct hostapd_data *hapd,
4994 struct wpa_init_params *params)
4996 struct wpa_driver_nl80211_data *drv;
4997 struct i802_bss *bss;
4999 char brname[IFNAMSIZ];
5000 int ifindex, br_ifindex;
5003 bss = wpa_driver_nl80211_init(hapd, params->ifname);
5008 if (linux_br_get(brname, params->ifname) == 0) {
5009 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5010 params->ifname, brname);
5011 br_ifindex = if_nametoindex(brname);
5017 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5018 drv->if_indices = drv->default_if_indices;
5019 for (i = 0; i < params->num_bridge; i++) {
5020 if (params->bridge[i]) {
5021 ifindex = if_nametoindex(params->bridge[i]);
5023 add_ifidx(drv, ifindex);
5024 if (ifindex == br_ifindex)
5028 if (!br_added && br_ifindex &&
5029 (params->num_bridge == 0 || !params->bridge[0]))
5030 add_ifidx(drv, br_ifindex);
5032 /* start listening for EAPOL on the default AP interface */
5033 add_ifidx(drv, drv->ifindex);
5035 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5038 if (params->bssid) {
5039 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5044 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5045 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5046 "into AP mode", bss->ifname);
5050 if (params->num_bridge && params->bridge[0] &&
5051 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5054 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5057 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5058 if (drv->eapol_sock < 0) {
5059 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5063 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5065 printf("Could not register read socket for eapol\n");
5069 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5075 nl80211_remove_monitor_interface(drv);
5076 if (drv->ioctl_sock >= 0)
5077 close(drv->ioctl_sock);
5079 genl_family_put(drv->nl80211);
5080 nl_cache_free(drv->nl_cache);
5081 nl80211_handle_destroy(drv->nl_handle);
5082 nl_cb_put(drv->nl_cb);
5089 static void i802_deinit(void *priv)
5091 wpa_driver_nl80211_deinit(priv);
5094 #endif /* HOSTAPD */
5097 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5098 enum wpa_driver_if_type type)
5101 case WPA_IF_STATION:
5102 case WPA_IF_P2P_CLIENT:
5103 case WPA_IF_P2P_GROUP:
5104 return NL80211_IFTYPE_STATION;
5105 case WPA_IF_AP_VLAN:
5106 return NL80211_IFTYPE_AP_VLAN;
5109 return NL80211_IFTYPE_AP;
5115 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5116 const char *ifname, const u8 *addr,
5117 void *bss_ctx, void **drv_priv,
5118 char *force_ifname, u8 *if_addr)
5120 struct i802_bss *bss = priv;
5121 struct wpa_driver_nl80211_data *drv = bss->drv;
5124 struct i802_bss *new_bss = NULL;
5126 if (type == WPA_IF_AP_BSS) {
5127 new_bss = os_zalloc(sizeof(*new_bss));
5128 if (new_bss == NULL)
5131 #endif /* HOSTAPD */
5134 os_memcpy(if_addr, addr, ETH_ALEN);
5135 ifidx = nl80211_create_iface(drv, ifname,
5136 wpa_driver_nl80211_if_type(type), addr,
5141 #endif /* HOSTAPD */
5146 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5150 if (type == WPA_IF_AP_BSS) {
5151 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5152 nl80211_remove_iface(drv, ifidx);
5156 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5157 new_bss->ifindex = ifidx;
5159 new_bss->next = drv->first_bss.next;
5160 drv->first_bss.next = new_bss;
5162 *drv_priv = new_bss;
5164 #endif /* HOSTAPD */
5170 static int wpa_driver_nl80211_if_remove(void *priv,
5171 enum wpa_driver_if_type type,
5174 struct i802_bss *bss = priv;
5175 struct wpa_driver_nl80211_data *drv = bss->drv;
5176 int ifindex = if_nametoindex(ifname);
5178 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5179 __func__, type, ifname, ifindex);
5182 nl80211_remove_iface(drv, ifindex);
5185 if (type != WPA_IF_AP_BSS)
5188 if (bss != &drv->first_bss) {
5189 struct i802_bss *tbss = &drv->first_bss;
5192 if (tbss->next != bss)
5195 tbss->next = bss->next;
5200 #endif /* HOSTAPD */
5206 static int cookie_handler(struct nl_msg *msg, void *arg)
5208 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5209 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5211 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5212 genlmsg_attrlen(gnlh, 0), NULL);
5213 if (tb[NL80211_ATTR_COOKIE])
5214 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5219 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5220 unsigned int freq, const u8 *buf,
5221 size_t buf_len, u64 *cookie_out)
5227 msg = nlmsg_alloc();
5231 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5232 NL80211_CMD_FRAME, 0);
5234 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5235 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5236 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5239 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5242 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5243 "(%s)", ret, strerror(-ret));
5244 goto nla_put_failure;
5246 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5247 "cookie 0x%llx", (long long unsigned int) cookie);
5250 *cookie_out = cookie;
5258 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5259 const u8 *dst, const u8 *src,
5261 const u8 *data, size_t data_len)
5263 struct i802_bss *bss = priv;
5264 struct wpa_driver_nl80211_data *drv = bss->drv;
5267 struct ieee80211_hdr *hdr;
5269 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5272 buf = os_zalloc(24 + data_len);
5275 os_memcpy(buf + 24, data, data_len);
5276 hdr = (struct ieee80211_hdr *) buf;
5277 hdr->frame_control =
5278 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5279 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5280 os_memcpy(hdr->addr2, src, ETH_ALEN);
5281 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5283 if (drv->nlmode == NL80211_IFTYPE_AP)
5284 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5286 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5287 &drv->send_action_cookie);
5294 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5295 unsigned int duration)
5297 struct i802_bss *bss = priv;
5298 struct wpa_driver_nl80211_data *drv = bss->drv;
5303 msg = nlmsg_alloc();
5307 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5308 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5310 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5311 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5312 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5315 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5317 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5318 "0x%llx for freq=%u MHz duration=%u",
5319 (long long unsigned int) cookie, freq, duration);
5320 drv->remain_on_chan_cookie = cookie;
5323 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5324 "(freq=%d duration=%u): %d (%s)",
5325 freq, duration, ret, strerror(-ret));
5331 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5333 struct i802_bss *bss = priv;
5334 struct wpa_driver_nl80211_data *drv = bss->drv;
5338 if (!drv->pending_remain_on_chan) {
5339 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5344 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5346 (long long unsigned int) drv->remain_on_chan_cookie);
5348 msg = nlmsg_alloc();
5352 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5353 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5355 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5356 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5358 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5361 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5362 "%d (%s)", ret, strerror(-ret));
5368 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5370 struct i802_bss *bss = priv;
5371 struct wpa_driver_nl80211_data *drv = bss->drv;
5373 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5374 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5375 "allowed in station mode (iftype=%d)",
5381 if (drv->nl_handle_preq) {
5382 eloop_unregister_read_sock(
5383 nl_socket_get_fd(drv->nl_handle_preq));
5384 nl_cache_free(drv->nl_cache_preq);
5385 nl80211_handle_destroy(drv->nl_handle_preq);
5386 drv->nl_handle_preq = NULL;
5391 if (drv->nl_handle_preq) {
5392 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5397 drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5398 if (drv->nl_handle_preq == NULL) {
5399 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5400 "netlink callbacks (preq)");
5404 if (genl_connect(drv->nl_handle_preq)) {
5405 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5406 "generic netlink (preq)");
5411 #ifdef CONFIG_LIBNL20
5412 if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5413 &drv->nl_cache_preq) < 0) {
5414 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5415 "netlink cache (preq)");
5418 #else /* CONFIG_LIBNL20 */
5419 drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5420 if (drv->nl_cache_preq == NULL) {
5421 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5422 "netlink cache (preq)");
5425 #endif /* CONFIG_LIBNL20 */
5427 if (nl80211_register_frame(drv, drv->nl_handle_preq,
5428 (WLAN_FC_TYPE_MGMT << 2) |
5429 (WLAN_FC_STYPE_PROBE_REQ << 4),
5434 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5435 wpa_driver_nl80211_event_receive, drv,
5436 drv->nl_handle_preq);
5441 nl_cache_free(drv->nl_cache_preq);
5443 nl80211_handle_destroy(drv->nl_handle_preq);
5444 drv->nl_handle_preq = NULL;
5450 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5451 int ifindex, int disabled)
5454 struct nlattr *bands, *band;
5457 msg = nlmsg_alloc();
5461 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5462 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5463 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5465 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5467 goto nla_put_failure;
5470 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5471 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5472 * rates. All 5 GHz rates are left enabled.
5474 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5476 goto nla_put_failure;
5477 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5478 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5479 nla_nest_end(msg, band);
5481 nla_nest_end(msg, bands);
5483 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5486 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5487 "(%s)", ret, strerror(-ret));
5498 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5500 struct i802_bss *bss = priv;
5501 struct wpa_driver_nl80211_data *drv = bss->drv;
5502 drv->disable_11b_rates = disabled;
5503 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5507 static int wpa_driver_nl80211_deinit_ap(void *priv)
5509 struct i802_bss *bss = priv;
5510 struct wpa_driver_nl80211_data *drv = bss->drv;
5511 if (drv->nlmode != NL80211_IFTYPE_AP)
5513 wpa_driver_nl80211_del_beacon(drv);
5514 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5518 static void wpa_driver_nl80211_resume(void *priv)
5520 struct i802_bss *bss = priv;
5521 struct wpa_driver_nl80211_data *drv = bss->drv;
5522 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5523 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5529 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5530 const u8 *ies, size_t ies_len)
5532 struct i802_bss *bss = priv;
5533 struct wpa_driver_nl80211_data *drv = bss->drv;
5537 u8 own_addr[ETH_ALEN];
5539 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5543 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5544 "action %d", action);
5549 * Action frame payload:
5550 * Category[1] = 6 (Fast BSS Transition)
5551 * Action[1] = 1 (Fast BSS Transition Request)
5557 data_len = 2 + 2 * ETH_ALEN + ies_len;
5558 data = os_malloc(data_len);
5562 *pos++ = 0x06; /* FT Action category */
5564 os_memcpy(pos, own_addr, ETH_ALEN);
5566 os_memcpy(pos, target_ap, ETH_ALEN);
5568 os_memcpy(pos, ies, ies_len);
5570 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5571 own_addr, drv->bssid,
5579 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5581 struct i802_bss *bss = priv;
5582 struct wpa_driver_nl80211_data *drv = bss->drv;
5583 struct nl_msg *msg, *cqm = NULL;
5585 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5586 "hysteresis=%d", threshold, hysteresis);
5588 msg = nlmsg_alloc();
5592 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5593 0, NL80211_CMD_SET_CQM, 0);
5595 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5597 cqm = nlmsg_alloc();
5601 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5602 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5603 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5605 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5617 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5620 struct i802_bss *bss = priv;
5621 struct wpa_driver_nl80211_data *drv = bss->drv;
5622 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5626 static int nl80211_set_intra_bss(void *priv, int enabled)
5628 struct i802_bss *bss = priv;
5629 struct wpa_driver_nl80211_data *drv = bss->drv;
5632 msg = nlmsg_alloc();
5636 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5637 NL80211_CMD_SET_BSS, 0);
5639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5640 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5642 return send_and_recv_msgs(drv, msg, NULL, NULL);
5648 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5650 .desc = "Linux nl80211/cfg80211",
5651 .get_bssid = wpa_driver_nl80211_get_bssid,
5652 .get_ssid = wpa_driver_nl80211_get_ssid,
5653 .set_key = wpa_driver_nl80211_set_key,
5654 .scan2 = wpa_driver_nl80211_scan,
5655 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5656 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5657 .disassociate = wpa_driver_nl80211_disassociate,
5658 .authenticate = wpa_driver_nl80211_authenticate,
5659 .associate = wpa_driver_nl80211_associate,
5660 .init = wpa_driver_nl80211_init,
5661 .deinit = wpa_driver_nl80211_deinit,
5662 .get_capa = wpa_driver_nl80211_get_capa,
5663 .set_operstate = wpa_driver_nl80211_set_operstate,
5664 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5665 .set_country = wpa_driver_nl80211_set_country,
5666 .set_beacon = wpa_driver_nl80211_set_beacon,
5667 .if_add = wpa_driver_nl80211_if_add,
5668 .if_remove = wpa_driver_nl80211_if_remove,
5669 .send_mlme = wpa_driver_nl80211_send_mlme,
5670 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5671 .sta_add = wpa_driver_nl80211_sta_add,
5672 .sta_remove = wpa_driver_nl80211_sta_remove,
5673 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5674 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5676 .hapd_init = i802_init,
5677 .hapd_deinit = i802_deinit,
5678 .get_seqnum = i802_get_seqnum,
5679 .flush = i802_flush,
5680 .read_sta_data = i802_read_sta_data,
5681 .sta_deauth = i802_sta_deauth,
5682 .sta_disassoc = i802_sta_disassoc,
5683 .get_inact_sec = i802_get_inact_sec,
5684 .sta_clear_stats = i802_sta_clear_stats,
5685 .set_rts = i802_set_rts,
5686 .set_frag = i802_set_frag,
5687 .set_rate_sets = i802_set_rate_sets,
5688 .set_cts_protect = i802_set_cts_protect,
5689 .set_preamble = i802_set_preamble,
5690 .set_short_slot_time = i802_set_short_slot_time,
5691 .set_tx_queue_params = i802_set_tx_queue_params,
5692 .set_sta_vlan = i802_set_sta_vlan,
5693 .set_wds_sta = i802_set_wds_sta,
5694 #endif /* HOSTAPD */
5695 .set_freq = i802_set_freq,
5696 .send_action = wpa_driver_nl80211_send_action,
5697 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5698 .cancel_remain_on_channel =
5699 wpa_driver_nl80211_cancel_remain_on_channel,
5700 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5701 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5702 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5703 .resume = wpa_driver_nl80211_resume,
5704 .send_ft_action = nl80211_send_ft_action,
5705 .signal_monitor = nl80211_signal_monitor,
5706 .send_frame = nl80211_send_frame,
5707 .set_intra_bss = nl80211_set_intra_bss,