1 /*
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
8 *
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.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
19 #include "includes.h"
20 #include <sys/ioctl.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <fcntl.h>
24 #include <net/if.h>
25 #include <netlink/genl/genl.h>
26 #include <netlink/genl/family.h>
27 #include <netlink/genl/ctrl.h>
28 #include <linux/rtnetlink.h>
29 #include <netpacket/packet.h>
30 #include <linux/filter.h>
31 #include <linux/errqueue.h>
32 #include "nl80211_copy.h"
34 #include "common.h"
35 #include "eloop.h"
36 #include "utils/list.h"
37 #include "common/ieee802_11_defs.h"
38 #include "common/ieee802_11_common.h"
39 #include "l2_packet/l2_packet.h"
40 #include "netlink.h"
41 #include "linux_ioctl.h"
42 #include "radiotap.h"
43 #include "radiotap_iter.h"
44 #include "rfkill.h"
45 #include "driver.h"
47 #ifndef SO_WIFI_STATUS
48 # if defined(__sparc__)
49 # define SO_WIFI_STATUS 0x0025
50 # elif defined(__parisc__)
51 # define SO_WIFI_STATUS 0x4022
52 # else
53 # define SO_WIFI_STATUS 41
54 # endif
56 # define SCM_WIFI_STATUS SO_WIFI_STATUS
57 #endif
59 #ifndef SO_EE_ORIGIN_TXSTATUS
60 #define SO_EE_ORIGIN_TXSTATUS 4
61 #endif
63 #ifndef PACKET_TX_TIMESTAMP
64 #define PACKET_TX_TIMESTAMP 16
65 #endif
67 #ifdef ANDROID
68 #include "android_drv.h"
69 #endif /* ANDROID */
70 #ifdef CONFIG_LIBNL20
71 /* libnl 2.0 compatibility code */
72 #define nl_handle nl_sock
73 #define nl80211_handle_alloc nl_socket_alloc_cb
74 #define nl80211_handle_destroy nl_socket_free
75 #else
76 /*
77 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
78 * but when you free a socket again it will mess up its bitmap and
79 * and use the wrong number the next time it needs a socket ID.
80 * Therefore, we wrap the handle alloc/destroy and add our own pid
81 * accounting.
82 */
83 static uint32_t port_bitmap[32] = { 0 };
85 static struct nl_handle *nl80211_handle_alloc(void *cb)
86 {
87 struct nl_handle *handle;
88 uint32_t pid = getpid() & 0x3FFFFF;
89 int i;
91 handle = nl_handle_alloc_cb(cb);
93 for (i = 0; i < 1024; i++) {
94 if (port_bitmap[i / 32] & (1 << (i % 32)))
95 continue;
96 port_bitmap[i / 32] |= 1 << (i % 32);
97 pid += i << 22;
98 break;
99 }
101 nl_socket_set_local_port(handle, pid);
103 return handle;
104 }
106 static void nl80211_handle_destroy(struct nl_handle *handle)
107 {
108 uint32_t port = nl_socket_get_local_port(handle);
110 port >>= 22;
111 port_bitmap[port / 32] &= ~(1 << (port % 32));
113 nl_handle_destroy(handle);
114 }
115 #endif /* CONFIG_LIBNL20 */
118 struct nl80211_handles {
119 struct nl_handle *handle;
120 };
123 static int nl_create_handles(struct nl80211_handles *handles, struct nl_cb *cb,
124 const char *dbg)
125 {
126 if (!handles)
127 return -1;
129 handles->handle = nl80211_handle_alloc(cb);
130 if (handles->handle == NULL) {
131 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
132 "callbacks (%s)", dbg);
133 return -1;
134 }
136 if (genl_connect(handles->handle)) {
137 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
138 "netlink (%s)", dbg);
139 goto err;
140 }
142 return 0;
143 err:
144 nl80211_handle_destroy(handles->handle);
145 return -1;
146 }
149 static void nl_destroy_handles(struct nl80211_handles *handles)
150 {
151 if (handles->handle == NULL)
152 return;
153 nl80211_handle_destroy(handles->handle);
154 handles->handle = NULL;
155 }
158 #ifndef IFF_LOWER_UP
159 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
160 #endif
161 #ifndef IFF_DORMANT
162 #define IFF_DORMANT 0x20000 /* driver signals dormant */
163 #endif
165 #ifndef IF_OPER_DORMANT
166 #define IF_OPER_DORMANT 5
167 #endif
168 #ifndef IF_OPER_UP
169 #define IF_OPER_UP 6
170 #endif
172 struct nl80211_global {
173 struct dl_list interfaces;
174 int if_add_ifindex;
175 struct netlink_data *netlink;
176 struct nl_cb *nl_cb;
177 struct nl80211_handles nl;
178 int nl80211_id;
179 int ioctl_sock; /* socket for ioctl() use */
181 struct nl80211_handles nl_event;
182 };
184 struct nl80211_wiphy_data {
185 struct dl_list list;
186 struct dl_list bsss;
187 struct dl_list drvs;
189 struct nl80211_handles nl_beacons;
190 struct nl_cb *nl_cb;
192 int wiphy_idx;
193 };
195 static void nl80211_global_deinit(void *priv);
196 static void wpa_driver_nl80211_deinit(void *priv);
198 struct i802_bss {
199 struct wpa_driver_nl80211_data *drv;
200 struct i802_bss *next;
201 int ifindex;
202 char ifname[IFNAMSIZ + 1];
203 char brname[IFNAMSIZ];
204 unsigned int beacon_set:1;
205 unsigned int added_if_into_bridge:1;
206 unsigned int added_bridge:1;
208 int freq;
210 struct nl80211_handles nl_preq, nl_mgmt;
211 struct nl_cb *nl_cb;
213 struct nl80211_wiphy_data *wiphy_data;
214 struct dl_list wiphy_list;
215 };
217 struct wpa_driver_nl80211_data {
218 struct nl80211_global *global;
219 struct dl_list list;
220 struct dl_list wiphy_list;
221 u8 addr[ETH_ALEN];
222 char phyname[32];
223 void *ctx;
224 int ifindex;
225 int if_removed;
226 int if_disabled;
227 int ignore_if_down_event;
228 struct rfkill_data *rfkill;
229 struct wpa_driver_capa capa;
230 int has_capability;
232 int operstate;
234 int scan_complete_events;
236 struct nl_cb *nl_cb;
238 u8 auth_bssid[ETH_ALEN];
239 u8 bssid[ETH_ALEN];
240 int associated;
241 u8 ssid[32];
242 size_t ssid_len;
243 enum nl80211_iftype nlmode;
244 enum nl80211_iftype ap_scan_as_station;
245 unsigned int assoc_freq;
247 int monitor_sock;
248 int monitor_ifidx;
249 int monitor_refcount;
251 unsigned int disabled_11b_rates:1;
252 unsigned int pending_remain_on_chan:1;
253 unsigned int in_interface_list:1;
254 unsigned int device_ap_sme:1;
255 unsigned int poll_command_supported:1;
256 unsigned int data_tx_status:1;
257 unsigned int scan_for_auth:1;
258 unsigned int retry_auth:1;
259 unsigned int use_monitor:1;
261 u64 remain_on_chan_cookie;
262 u64 send_action_cookie;
264 unsigned int last_mgmt_freq;
266 struct wpa_driver_scan_filter *filter_ssids;
267 size_t num_filter_ssids;
269 struct i802_bss first_bss;
271 int eapol_tx_sock;
273 #ifdef HOSTAPD
274 int eapol_sock; /* socket for EAPOL frames */
276 int default_if_indices[16];
277 int *if_indices;
278 int num_if_indices;
280 int last_freq;
281 int last_freq_ht;
282 #endif /* HOSTAPD */
284 /* From failed authentication command */
285 int auth_freq;
286 u8 auth_bssid_[ETH_ALEN];
287 u8 auth_ssid[32];
288 size_t auth_ssid_len;
289 int auth_alg;
290 u8 *auth_ie;
291 size_t auth_ie_len;
292 u8 auth_wep_key[4][16];
293 size_t auth_wep_key_len[4];
294 int auth_wep_tx_keyidx;
295 int auth_local_state_change;
296 int auth_p2p;
297 };
300 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
301 void *timeout_ctx);
302 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
303 enum nl80211_iftype nlmode);
304 static int
305 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
306 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
307 const u8 *addr, int cmd, u16 reason_code,
308 int local_state_change);
309 static void nl80211_remove_monitor_interface(
310 struct wpa_driver_nl80211_data *drv);
311 static int nl80211_send_frame_cmd(struct i802_bss *bss,
312 unsigned int freq, unsigned int wait,
313 const u8 *buf, size_t buf_len, u64 *cookie,
314 int no_cck, int no_ack, int offchanok);
315 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
316 #ifdef ANDROID
317 static int android_pno_start(struct i802_bss *bss,
318 struct wpa_driver_scan_params *params);
319 static int android_pno_stop(struct i802_bss *bss);
320 #endif /* ANDROID */
322 #ifdef HOSTAPD
323 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
324 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
325 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
326 static int wpa_driver_nl80211_if_remove(void *priv,
327 enum wpa_driver_if_type type,
328 const char *ifname);
329 #else /* HOSTAPD */
330 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
331 {
332 }
334 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
335 {
336 }
338 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
339 {
340 return 0;
341 }
342 #endif /* HOSTAPD */
344 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
345 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
346 int ifindex, int disabled);
348 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
349 static int wpa_driver_nl80211_authenticate_retry(
350 struct wpa_driver_nl80211_data *drv);
353 static int is_ap_interface(enum nl80211_iftype nlmode)
354 {
355 return (nlmode == NL80211_IFTYPE_AP ||
356 nlmode == NL80211_IFTYPE_P2P_GO);
357 }
360 static int is_sta_interface(enum nl80211_iftype nlmode)
361 {
362 return (nlmode == NL80211_IFTYPE_STATION ||
363 nlmode == NL80211_IFTYPE_P2P_CLIENT);
364 }
367 static int is_p2p_interface(enum nl80211_iftype nlmode)
368 {
369 return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
370 nlmode == NL80211_IFTYPE_P2P_GO);
371 }
374 struct nl80211_bss_info_arg {
375 struct wpa_driver_nl80211_data *drv;
376 struct wpa_scan_results *res;
377 unsigned int assoc_freq;
378 u8 assoc_bssid[ETH_ALEN];
379 };
381 static int bss_info_handler(struct nl_msg *msg, void *arg);
384 /* nl80211 code */
385 static int ack_handler(struct nl_msg *msg, void *arg)
386 {
387 int *err = arg;
388 *err = 0;
389 return NL_STOP;
390 }
392 static int finish_handler(struct nl_msg *msg, void *arg)
393 {
394 int *ret = arg;
395 *ret = 0;
396 return NL_SKIP;
397 }
399 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
400 void *arg)
401 {
402 int *ret = arg;
403 *ret = err->error;
404 return NL_SKIP;
405 }
408 static int no_seq_check(struct nl_msg *msg, void *arg)
409 {
410 return NL_OK;
411 }
414 static int send_and_recv(struct nl80211_global *global,
415 struct nl_handle *nl_handle, struct nl_msg *msg,
416 int (*valid_handler)(struct nl_msg *, void *),
417 void *valid_data)
418 {
419 struct nl_cb *cb;
420 int err = -ENOMEM;
422 cb = nl_cb_clone(global->nl_cb);
423 if (!cb)
424 goto out;
426 err = nl_send_auto_complete(nl_handle, msg);
427 if (err < 0)
428 goto out;
430 err = 1;
432 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
433 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
434 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
436 if (valid_handler)
437 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
438 valid_handler, valid_data);
440 while (err > 0)
441 nl_recvmsgs(nl_handle, cb);
442 out:
443 nl_cb_put(cb);
444 nlmsg_free(msg);
445 return err;
446 }
449 static int send_and_recv_msgs_global(struct nl80211_global *global,
450 struct nl_msg *msg,
451 int (*valid_handler)(struct nl_msg *, void *),
452 void *valid_data)
453 {
454 return send_and_recv(global, global->nl.handle, msg, valid_handler,
455 valid_data);
456 }
459 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
460 struct nl_msg *msg,
461 int (*valid_handler)(struct nl_msg *, void *),
462 void *valid_data)
463 {
464 return send_and_recv(drv->global, drv->global->nl.handle, msg,
465 valid_handler, valid_data);
466 }
469 struct family_data {
470 const char *group;
471 int id;
472 };
475 static int family_handler(struct nl_msg *msg, void *arg)
476 {
477 struct family_data *res = arg;
478 struct nlattr *tb[CTRL_ATTR_MAX + 1];
479 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
480 struct nlattr *mcgrp;
481 int i;
483 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
484 genlmsg_attrlen(gnlh, 0), NULL);
485 if (!tb[CTRL_ATTR_MCAST_GROUPS])
486 return NL_SKIP;
488 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
489 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
490 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
491 nla_len(mcgrp), NULL);
492 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
493 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
494 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
495 res->group,
496 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
497 continue;
498 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
499 break;
500 };
502 return NL_SKIP;
503 }
506 static int nl_get_multicast_id(struct nl80211_global *global,
507 const char *family, const char *group)
508 {
509 struct nl_msg *msg;
510 int ret = -1;
511 struct family_data res = { group, -ENOENT };
513 msg = nlmsg_alloc();
514 if (!msg)
515 return -ENOMEM;
516 genlmsg_put(msg, 0, 0,
517 genl_ctrl_resolve(global->nl.handle, "nlctrl"),
518 0, 0, CTRL_CMD_GETFAMILY, 0);
519 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
521 ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
522 msg = NULL;
523 if (ret == 0)
524 ret = res.id;
526 nla_put_failure:
527 nlmsg_free(msg);
528 return ret;
529 }
532 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
533 struct nl_msg *msg, int flags, uint8_t cmd)
534 {
535 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
536 0, flags, cmd, 0);
537 }
540 struct wiphy_idx_data {
541 int wiphy_idx;
542 };
545 static int netdev_info_handler(struct nl_msg *msg, void *arg)
546 {
547 struct nlattr *tb[NL80211_ATTR_MAX + 1];
548 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
549 struct wiphy_idx_data *info = arg;
551 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
552 genlmsg_attrlen(gnlh, 0), NULL);
554 if (tb[NL80211_ATTR_WIPHY])
555 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
557 return NL_SKIP;
558 }
561 static int nl80211_get_wiphy_index(struct i802_bss *bss)
562 {
563 struct nl_msg *msg;
564 struct wiphy_idx_data data = {
565 .wiphy_idx = -1,
566 };
568 msg = nlmsg_alloc();
569 if (!msg)
570 return -1;
572 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
576 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
577 return data.wiphy_idx;
578 msg = NULL;
579 nla_put_failure:
580 nlmsg_free(msg);
581 return -1;
582 }
585 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
586 struct nl80211_wiphy_data *w)
587 {
588 struct nl_msg *msg;
589 int ret = -1;
591 msg = nlmsg_alloc();
592 if (!msg)
593 return -1;
595 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
597 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
599 ret = send_and_recv(drv->global, w->nl_beacons.handle, msg, NULL, NULL);
600 msg = NULL;
601 if (ret) {
602 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
603 "failed: ret=%d (%s)",
604 ret, strerror(-ret));
605 goto nla_put_failure;
606 }
607 ret = 0;
608 nla_put_failure:
609 nlmsg_free(msg);
610 return ret;
611 }
614 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
615 {
616 struct nl80211_wiphy_data *w = eloop_ctx;
618 wpa_printf(MSG_DEBUG, "nl80211: Beacon event message available");
620 nl_recvmsgs(handle, w->nl_cb);
621 }
624 static int process_beacon_event(struct nl_msg *msg, void *arg)
625 {
626 struct nl80211_wiphy_data *w = arg;
627 struct wpa_driver_nl80211_data *drv;
628 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
629 struct nlattr *tb[NL80211_ATTR_MAX + 1];
630 union wpa_event_data event;
632 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
633 genlmsg_attrlen(gnlh, 0), NULL);
635 if (gnlh->cmd != NL80211_CMD_FRAME) {
636 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
637 gnlh->cmd);
638 return NL_SKIP;
639 }
641 if (!tb[NL80211_ATTR_FRAME])
642 return NL_SKIP;
644 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
645 wiphy_list) {
646 os_memset(&event, 0, sizeof(event));
647 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
648 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
649 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
650 }
652 return NL_SKIP;
653 }
656 static struct nl80211_wiphy_data *
657 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
658 {
659 static DEFINE_DL_LIST(nl80211_wiphys);
660 struct nl80211_wiphy_data *w;
661 int wiphy_idx, found = 0;
662 struct i802_bss *tmp_bss;
664 if (bss->wiphy_data != NULL)
665 return bss->wiphy_data;
667 wiphy_idx = nl80211_get_wiphy_index(bss);
669 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
670 if (w->wiphy_idx == wiphy_idx)
671 goto add;
672 }
674 /* alloc new one */
675 w = os_zalloc(sizeof(*w));
676 if (w == NULL)
677 return NULL;
678 w->wiphy_idx = wiphy_idx;
679 dl_list_init(&w->bsss);
680 dl_list_init(&w->drvs);
682 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
683 if (!w->nl_cb) {
684 os_free(w);
685 return NULL;
686 }
687 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
688 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
689 w);
691 if (nl_create_handles(&w->nl_beacons, bss->drv->global->nl_cb,
692 "wiphy beacons")) {
693 os_free(w);
694 return NULL;
695 }
697 if (nl80211_register_beacons(bss->drv, w)) {
698 nl_destroy_handles(&w->nl_beacons);
699 os_free(w);
700 return NULL;
701 }
703 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons.handle),
704 nl80211_recv_beacons, w,
705 w->nl_beacons.handle);
707 dl_list_add(&nl80211_wiphys, &w->list);
709 add:
710 /* drv entry for this bss already there? */
711 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
712 if (tmp_bss->drv == bss->drv) {
713 found = 1;
714 break;
715 }
716 }
717 /* if not add it */
718 if (!found)
719 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
721 dl_list_add(&w->bsss, &bss->wiphy_list);
722 bss->wiphy_data = w;
723 return w;
724 }
727 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
728 {
729 struct nl80211_wiphy_data *w = bss->wiphy_data;
730 struct i802_bss *tmp_bss;
731 int found = 0;
733 if (w == NULL)
734 return;
735 bss->wiphy_data = NULL;
736 dl_list_del(&bss->wiphy_list);
738 /* still any for this drv present? */
739 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
740 if (tmp_bss->drv == bss->drv) {
741 found = 1;
742 break;
743 }
744 }
745 /* if not remove it */
746 if (!found)
747 dl_list_del(&bss->drv->wiphy_list);
749 if (!dl_list_empty(&w->bsss))
750 return;
752 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons.handle));
754 nl_cb_put(w->nl_cb);
755 nl_destroy_handles(&w->nl_beacons);
756 dl_list_del(&w->list);
757 os_free(w);
758 }
761 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
762 {
763 struct i802_bss *bss = priv;
764 struct wpa_driver_nl80211_data *drv = bss->drv;
765 if (!drv->associated)
766 return -1;
767 os_memcpy(bssid, drv->bssid, ETH_ALEN);
768 return 0;
769 }
772 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
773 {
774 struct i802_bss *bss = priv;
775 struct wpa_driver_nl80211_data *drv = bss->drv;
776 if (!drv->associated)
777 return -1;
778 os_memcpy(ssid, drv->ssid, drv->ssid_len);
779 return drv->ssid_len;
780 }
783 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
784 char *buf, size_t len, int del)
785 {
786 union wpa_event_data event;
788 os_memset(&event, 0, sizeof(event));
789 if (len > sizeof(event.interface_status.ifname))
790 len = sizeof(event.interface_status.ifname) - 1;
791 os_memcpy(event.interface_status.ifname, buf, len);
792 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
793 EVENT_INTERFACE_ADDED;
795 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
796 del ? "DEL" : "NEW",
797 event.interface_status.ifname,
798 del ? "removed" : "added");
800 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
801 if (del)
802 drv->if_removed = 1;
803 else
804 drv->if_removed = 0;
805 }
807 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
808 }
811 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
812 u8 *buf, size_t len)
813 {
814 int attrlen, rta_len;
815 struct rtattr *attr;
817 attrlen = len;
818 attr = (struct rtattr *) buf;
820 rta_len = RTA_ALIGN(sizeof(struct rtattr));
821 while (RTA_OK(attr, attrlen)) {
822 if (attr->rta_type == IFLA_IFNAME) {
823 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
824 == 0)
825 return 1;
826 else
827 break;
828 }
829 attr = RTA_NEXT(attr, attrlen);
830 }
832 return 0;
833 }
836 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
837 int ifindex, u8 *buf, size_t len)
838 {
839 if (drv->ifindex == ifindex)
840 return 1;
842 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
843 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
844 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
845 "interface");
846 wpa_driver_nl80211_finish_drv_init(drv);
847 return 1;
848 }
850 return 0;
851 }
854 static struct wpa_driver_nl80211_data *
855 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
856 {
857 struct wpa_driver_nl80211_data *drv;
858 dl_list_for_each(drv, &global->interfaces,
859 struct wpa_driver_nl80211_data, list) {
860 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
861 have_ifidx(drv, idx))
862 return drv;
863 }
864 return NULL;
865 }
868 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
869 struct ifinfomsg *ifi,
870 u8 *buf, size_t len)
871 {
872 struct nl80211_global *global = ctx;
873 struct wpa_driver_nl80211_data *drv;
874 int attrlen, rta_len;
875 struct rtattr *attr;
876 u32 brid = 0;
877 char namebuf[IFNAMSIZ];
879 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
880 if (!drv) {
881 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
882 "ifindex %d", ifi->ifi_index);
883 return;
884 }
886 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
887 "(%s%s%s%s)",
888 drv->operstate, ifi->ifi_flags,
889 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
890 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
891 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
892 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
894 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
895 if (if_indextoname(ifi->ifi_index, namebuf) &&
896 linux_iface_up(drv->global->ioctl_sock,
897 drv->first_bss.ifname) > 0) {
898 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
899 "event since interface %s is up", namebuf);
900 return;
901 }
902 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
903 if (drv->ignore_if_down_event) {
904 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
905 "event generated by mode change");
906 drv->ignore_if_down_event = 0;
907 } else {
908 drv->if_disabled = 1;
909 wpa_supplicant_event(drv->ctx,
910 EVENT_INTERFACE_DISABLED, NULL);
911 }
912 }
914 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
915 if (if_indextoname(ifi->ifi_index, namebuf) &&
916 linux_iface_up(drv->global->ioctl_sock,
917 drv->first_bss.ifname) == 0) {
918 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
919 "event since interface %s is down",
920 namebuf);
921 } else {
922 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
923 drv->if_disabled = 0;
924 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
925 NULL);
926 }
927 }
929 /*
930 * Some drivers send the association event before the operup event--in
931 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
932 * fails. This will hit us when wpa_supplicant does not need to do
933 * IEEE 802.1X authentication
934 */
935 if (drv->operstate == 1 &&
936 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
937 !(ifi->ifi_flags & IFF_RUNNING))
938 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
939 -1, IF_OPER_UP);
941 attrlen = len;
942 attr = (struct rtattr *) buf;
943 rta_len = RTA_ALIGN(sizeof(struct rtattr));
944 while (RTA_OK(attr, attrlen)) {
945 if (attr->rta_type == IFLA_IFNAME) {
946 wpa_driver_nl80211_event_link(
947 drv,
948 ((char *) attr) + rta_len,
949 attr->rta_len - rta_len, 0);
950 } else if (attr->rta_type == IFLA_MASTER)
951 brid = nla_get_u32((struct nlattr *) attr);
952 attr = RTA_NEXT(attr, attrlen);
953 }
955 if (ifi->ifi_family == AF_BRIDGE && brid) {
956 /* device has been added to bridge */
957 if_indextoname(brid, namebuf);
958 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
959 brid, namebuf);
960 add_ifidx(drv, brid);
961 }
962 }
965 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
966 struct ifinfomsg *ifi,
967 u8 *buf, size_t len)
968 {
969 struct nl80211_global *global = ctx;
970 struct wpa_driver_nl80211_data *drv;
971 int attrlen, rta_len;
972 struct rtattr *attr;
973 u32 brid = 0;
975 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
976 if (!drv) {
977 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
978 "foreign ifindex %d", ifi->ifi_index);
979 return;
980 }
982 attrlen = len;
983 attr = (struct rtattr *) buf;
985 rta_len = RTA_ALIGN(sizeof(struct rtattr));
986 while (RTA_OK(attr, attrlen)) {
987 if (attr->rta_type == IFLA_IFNAME) {
988 wpa_driver_nl80211_event_link(
989 drv,
990 ((char *) attr) + rta_len,
991 attr->rta_len - rta_len, 1);
992 } else if (attr->rta_type == IFLA_MASTER)
993 brid = nla_get_u32((struct nlattr *) attr);
994 attr = RTA_NEXT(attr, attrlen);
995 }
997 if (ifi->ifi_family == AF_BRIDGE && brid) {
998 /* device has been removed from bridge */
999 char namebuf[IFNAMSIZ];
1000 if_indextoname(brid, namebuf);
1001 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1002 "%s", brid, namebuf);
1003 del_ifidx(drv, brid);
1004 }
1005 }
1008 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1009 const u8 *frame, size_t len)
1010 {
1011 const struct ieee80211_mgmt *mgmt;
1012 union wpa_event_data event;
1014 mgmt = (const struct ieee80211_mgmt *) frame;
1015 if (len < 24 + sizeof(mgmt->u.auth)) {
1016 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1017 "frame");
1018 return;
1019 }
1021 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1022 os_memset(&event, 0, sizeof(event));
1023 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1024 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1025 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1026 if (len > 24 + sizeof(mgmt->u.auth)) {
1027 event.auth.ies = mgmt->u.auth.variable;
1028 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1029 }
1031 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1032 }
1035 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1036 {
1037 struct nl_msg *msg;
1038 int ret;
1039 struct nl80211_bss_info_arg arg;
1041 os_memset(&arg, 0, sizeof(arg));
1042 msg = nlmsg_alloc();
1043 if (!msg)
1044 goto nla_put_failure;
1046 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1047 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1049 arg.drv = drv;
1050 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1051 msg = NULL;
1052 if (ret == 0) {
1053 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1054 "associated BSS from scan results: %u MHz",
1055 arg.assoc_freq);
1056 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1057 }
1058 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1059 "(%s)", ret, strerror(-ret));
1060 nla_put_failure:
1061 nlmsg_free(msg);
1062 return drv->assoc_freq;
1063 }
1066 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1067 const u8 *frame, size_t len)
1068 {
1069 const struct ieee80211_mgmt *mgmt;
1070 union wpa_event_data event;
1071 u16 status;
1073 mgmt = (const struct ieee80211_mgmt *) frame;
1074 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1075 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1076 "frame");
1077 return;
1078 }
1080 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1081 if (status != WLAN_STATUS_SUCCESS) {
1082 os_memset(&event, 0, sizeof(event));
1083 event.assoc_reject.bssid = mgmt->bssid;
1084 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1085 event.assoc_reject.resp_ies =
1086 (u8 *) mgmt->u.assoc_resp.variable;
1087 event.assoc_reject.resp_ies_len =
1088 len - 24 - sizeof(mgmt->u.assoc_resp);
1089 }
1090 event.assoc_reject.status_code = status;
1092 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1093 return;
1094 }
1096 drv->associated = 1;
1097 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1099 os_memset(&event, 0, sizeof(event));
1100 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1101 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1102 event.assoc_info.resp_ies_len =
1103 len - 24 - sizeof(mgmt->u.assoc_resp);
1104 }
1106 event.assoc_info.freq = drv->assoc_freq;
1108 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1109 }
1112 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1113 enum nl80211_commands cmd, struct nlattr *status,
1114 struct nlattr *addr, struct nlattr *req_ie,
1115 struct nlattr *resp_ie)
1116 {
1117 union wpa_event_data event;
1119 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1120 /*
1121 * Avoid reporting two association events that would confuse
1122 * the core code.
1123 */
1124 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1125 "when using userspace SME", cmd);
1126 return;
1127 }
1129 os_memset(&event, 0, sizeof(event));
1130 if (cmd == NL80211_CMD_CONNECT &&
1131 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1132 if (addr)
1133 event.assoc_reject.bssid = nla_data(addr);
1134 if (resp_ie) {
1135 event.assoc_reject.resp_ies = nla_data(resp_ie);
1136 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1137 }
1138 event.assoc_reject.status_code = nla_get_u16(status);
1139 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1140 return;
1141 }
1143 drv->associated = 1;
1144 if (addr)
1145 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1147 if (req_ie) {
1148 event.assoc_info.req_ies = nla_data(req_ie);
1149 event.assoc_info.req_ies_len = nla_len(req_ie);
1150 }
1151 if (resp_ie) {
1152 event.assoc_info.resp_ies = nla_data(resp_ie);
1153 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1154 }
1156 event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1158 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1159 }
1162 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1163 struct nlattr *reason, struct nlattr *addr)
1164 {
1165 union wpa_event_data data;
1167 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1168 /*
1169 * Avoid reporting two disassociation events that could
1170 * confuse the core code.
1171 */
1172 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1173 "event when using userspace SME");
1174 return;
1175 }
1177 drv->associated = 0;
1178 os_memset(&data, 0, sizeof(data));
1179 if (reason)
1180 data.disassoc_info.reason_code = nla_get_u16(reason);
1181 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1182 }
1185 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1186 enum nl80211_commands cmd, struct nlattr *addr)
1187 {
1188 union wpa_event_data event;
1189 enum wpa_event_type ev;
1191 if (nla_len(addr) != ETH_ALEN)
1192 return;
1194 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1195 cmd, MAC2STR((u8 *) nla_data(addr)));
1197 if (cmd == NL80211_CMD_AUTHENTICATE)
1198 ev = EVENT_AUTH_TIMED_OUT;
1199 else if (cmd == NL80211_CMD_ASSOCIATE)
1200 ev = EVENT_ASSOC_TIMED_OUT;
1201 else
1202 return;
1204 os_memset(&event, 0, sizeof(event));
1205 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1206 wpa_supplicant_event(drv->ctx, ev, &event);
1207 }
1210 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1211 struct nlattr *freq, const u8 *frame, size_t len)
1212 {
1213 const struct ieee80211_mgmt *mgmt;
1214 union wpa_event_data event;
1215 u16 fc, stype;
1217 mgmt = (const struct ieee80211_mgmt *) frame;
1218 if (len < 24) {
1219 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1220 return;
1221 }
1223 fc = le_to_host16(mgmt->frame_control);
1224 stype = WLAN_FC_GET_STYPE(fc);
1226 os_memset(&event, 0, sizeof(event));
1227 if (freq) {
1228 event.rx_action.freq = nla_get_u32(freq);
1229 drv->last_mgmt_freq = event.rx_action.freq;
1230 }
1231 if (stype == WLAN_FC_STYPE_ACTION) {
1232 event.rx_action.da = mgmt->da;
1233 event.rx_action.sa = mgmt->sa;
1234 event.rx_action.bssid = mgmt->bssid;
1235 event.rx_action.category = mgmt->u.action.category;
1236 event.rx_action.data = &mgmt->u.action.category + 1;
1237 event.rx_action.len = frame + len - event.rx_action.data;
1238 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1239 } else {
1240 event.rx_mgmt.frame = frame;
1241 event.rx_mgmt.frame_len = len;
1242 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1243 }
1244 }
1247 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1248 struct nlattr *cookie, const u8 *frame,
1249 size_t len, struct nlattr *ack)
1250 {
1251 union wpa_event_data event;
1252 const struct ieee80211_hdr *hdr;
1253 u16 fc;
1255 if (!is_ap_interface(drv->nlmode)) {
1256 u64 cookie_val;
1258 if (!cookie)
1259 return;
1261 cookie_val = nla_get_u64(cookie);
1262 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1263 " cookie=0%llx%s (ack=%d)",
1264 (long long unsigned int) cookie_val,
1265 cookie_val == drv->send_action_cookie ?
1266 " (match)" : " (unknown)", ack != NULL);
1267 if (cookie_val != drv->send_action_cookie)
1268 return;
1269 }
1271 hdr = (const struct ieee80211_hdr *) frame;
1272 fc = le_to_host16(hdr->frame_control);
1274 os_memset(&event, 0, sizeof(event));
1275 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1276 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1277 event.tx_status.dst = hdr->addr1;
1278 event.tx_status.data = frame;
1279 event.tx_status.data_len = len;
1280 event.tx_status.ack = ack != NULL;
1281 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1282 }
1285 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1286 enum wpa_event_type type,
1287 const u8 *frame, size_t len)
1288 {
1289 const struct ieee80211_mgmt *mgmt;
1290 union wpa_event_data event;
1291 const u8 *bssid = NULL;
1292 u16 reason_code = 0;
1294 mgmt = (const struct ieee80211_mgmt *) frame;
1295 if (len >= 24) {
1296 bssid = mgmt->bssid;
1298 if (drv->associated != 0 &&
1299 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1300 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1301 /*
1302 * We have presumably received this deauth as a
1303 * response to a clear_state_mismatch() outgoing
1304 * deauth. Don't let it take us offline!
1305 */
1306 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1307 "from Unknown BSSID " MACSTR " -- ignoring",
1308 MAC2STR(bssid));
1309 return;
1310 }
1311 }
1313 drv->associated = 0;
1314 os_memset(&event, 0, sizeof(event));
1316 /* Note: Same offset for Reason Code in both frame subtypes */
1317 if (len >= 24 + sizeof(mgmt->u.deauth))
1318 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1320 if (type == EVENT_DISASSOC) {
1321 event.disassoc_info.addr = bssid;
1322 event.disassoc_info.reason_code = reason_code;
1323 if (frame + len > mgmt->u.disassoc.variable) {
1324 event.disassoc_info.ie = mgmt->u.disassoc.variable;
1325 event.disassoc_info.ie_len = frame + len -
1326 mgmt->u.disassoc.variable;
1327 }
1328 } else {
1329 event.deauth_info.addr = bssid;
1330 event.deauth_info.reason_code = reason_code;
1331 if (frame + len > mgmt->u.deauth.variable) {
1332 event.deauth_info.ie = mgmt->u.deauth.variable;
1333 event.deauth_info.ie_len = frame + len -
1334 mgmt->u.deauth.variable;
1335 }
1336 }
1338 wpa_supplicant_event(drv->ctx, type, &event);
1339 }
1342 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1343 enum wpa_event_type type,
1344 const u8 *frame, size_t len)
1345 {
1346 const struct ieee80211_mgmt *mgmt;
1347 union wpa_event_data event;
1348 u16 reason_code = 0;
1350 if (len < 24)
1351 return;
1353 mgmt = (const struct ieee80211_mgmt *) frame;
1355 os_memset(&event, 0, sizeof(event));
1356 /* Note: Same offset for Reason Code in both frame subtypes */
1357 if (len >= 24 + sizeof(mgmt->u.deauth))
1358 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1360 if (type == EVENT_UNPROT_DISASSOC) {
1361 event.unprot_disassoc.sa = mgmt->sa;
1362 event.unprot_disassoc.da = mgmt->da;
1363 event.unprot_disassoc.reason_code = reason_code;
1364 } else {
1365 event.unprot_deauth.sa = mgmt->sa;
1366 event.unprot_deauth.da = mgmt->da;
1367 event.unprot_deauth.reason_code = reason_code;
1368 }
1370 wpa_supplicant_event(drv->ctx, type, &event);
1371 }
1374 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1375 enum nl80211_commands cmd, struct nlattr *frame,
1376 struct nlattr *addr, struct nlattr *timed_out,
1377 struct nlattr *freq, struct nlattr *ack,
1378 struct nlattr *cookie)
1379 {
1380 if (timed_out && addr) {
1381 mlme_timeout_event(drv, cmd, addr);
1382 return;
1383 }
1385 if (frame == NULL) {
1386 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1387 "data", cmd);
1388 return;
1389 }
1391 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1392 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1393 nla_data(frame), nla_len(frame));
1395 switch (cmd) {
1396 case NL80211_CMD_AUTHENTICATE:
1397 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1398 break;
1399 case NL80211_CMD_ASSOCIATE:
1400 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1401 break;
1402 case NL80211_CMD_DEAUTHENTICATE:
1403 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1404 nla_data(frame), nla_len(frame));
1405 break;
1406 case NL80211_CMD_DISASSOCIATE:
1407 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1408 nla_data(frame), nla_len(frame));
1409 break;
1410 case NL80211_CMD_FRAME:
1411 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
1412 break;
1413 case NL80211_CMD_FRAME_TX_STATUS:
1414 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1415 nla_len(frame), ack);
1416 break;
1417 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1418 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1419 nla_data(frame), nla_len(frame));
1420 break;
1421 case NL80211_CMD_UNPROT_DISASSOCIATE:
1422 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1423 nla_data(frame), nla_len(frame));
1424 break;
1425 default:
1426 break;
1427 }
1428 }
1431 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1432 struct nlattr *tb[])
1433 {
1434 union wpa_event_data data;
1436 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1437 os_memset(&data, 0, sizeof(data));
1438 if (tb[NL80211_ATTR_MAC]) {
1439 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1440 nla_data(tb[NL80211_ATTR_MAC]),
1441 nla_len(tb[NL80211_ATTR_MAC]));
1442 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1443 }
1444 if (tb[NL80211_ATTR_KEY_SEQ]) {
1445 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1446 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1447 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1448 }
1449 if (tb[NL80211_ATTR_KEY_TYPE]) {
1450 enum nl80211_key_type key_type =
1451 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1452 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1453 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1454 data.michael_mic_failure.unicast = 1;
1455 } else
1456 data.michael_mic_failure.unicast = 1;
1458 if (tb[NL80211_ATTR_KEY_IDX]) {
1459 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1460 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1461 }
1463 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1464 }
1467 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1468 struct nlattr *tb[])
1469 {
1470 if (tb[NL80211_ATTR_MAC] == NULL) {
1471 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1472 "event");
1473 return;
1474 }
1475 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1476 drv->associated = 1;
1477 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1478 MAC2STR(drv->bssid));
1480 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1481 }
1484 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1485 int cancel_event, struct nlattr *tb[])
1486 {
1487 unsigned int freq, chan_type, duration;
1488 union wpa_event_data data;
1489 u64 cookie;
1491 if (tb[NL80211_ATTR_WIPHY_FREQ])
1492 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1493 else
1494 freq = 0;
1496 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1497 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1498 else
1499 chan_type = 0;
1501 if (tb[NL80211_ATTR_DURATION])
1502 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1503 else
1504 duration = 0;
1506 if (tb[NL80211_ATTR_COOKIE])
1507 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1508 else
1509 cookie = 0;
1511 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1512 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1513 cancel_event, freq, chan_type, duration,
1514 (long long unsigned int) cookie,
1515 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1517 if (cookie != drv->remain_on_chan_cookie)
1518 return; /* not for us */
1520 if (cancel_event)
1521 drv->pending_remain_on_chan = 0;
1523 os_memset(&data, 0, sizeof(data));
1524 data.remain_on_channel.freq = freq;
1525 data.remain_on_channel.duration = duration;
1526 wpa_supplicant_event(drv->ctx, cancel_event ?
1527 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1528 EVENT_REMAIN_ON_CHANNEL, &data);
1529 }
1532 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1533 struct nlattr *tb[])
1534 {
1535 union wpa_event_data event;
1536 struct nlattr *nl;
1537 int rem;
1538 struct scan_info *info;
1539 #define MAX_REPORT_FREQS 50
1540 int freqs[MAX_REPORT_FREQS];
1541 int num_freqs = 0;
1543 if (drv->scan_for_auth) {
1544 drv->scan_for_auth = 0;
1545 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1546 "cfg80211 BSS entry");
1547 wpa_driver_nl80211_authenticate_retry(drv);
1548 return;
1549 }
1551 os_memset(&event, 0, sizeof(event));
1552 info = &event.scan_info;
1553 info->aborted = aborted;
1555 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1556 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1557 struct wpa_driver_scan_ssid *s =
1558 &info->ssids[info->num_ssids];
1559 s->ssid = nla_data(nl);
1560 s->ssid_len = nla_len(nl);
1561 info->num_ssids++;
1562 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1563 break;
1564 }
1565 }
1566 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1567 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1568 {
1569 freqs[num_freqs] = nla_get_u32(nl);
1570 num_freqs++;
1571 if (num_freqs == MAX_REPORT_FREQS - 1)
1572 break;
1573 }
1574 info->freqs = freqs;
1575 info->num_freqs = num_freqs;
1576 }
1577 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1578 }
1581 static int get_link_signal(struct nl_msg *msg, void *arg)
1582 {
1583 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1584 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1585 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1586 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1587 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1588 };
1589 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1590 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1591 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1592 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1593 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1594 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1595 };
1596 struct wpa_signal_info *sig_change = arg;
1598 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1599 genlmsg_attrlen(gnlh, 0), NULL);
1600 if (!tb[NL80211_ATTR_STA_INFO] ||
1601 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1602 tb[NL80211_ATTR_STA_INFO], policy))
1603 return NL_SKIP;
1604 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1605 return NL_SKIP;
1607 sig_change->current_signal =
1608 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1610 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1611 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1612 sinfo[NL80211_STA_INFO_TX_BITRATE],
1613 rate_policy)) {
1614 sig_change->current_txrate = 0;
1615 } else {
1616 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1617 sig_change->current_txrate =
1618 nla_get_u16(rinfo[
1619 NL80211_RATE_INFO_BITRATE]) * 100;
1620 }
1621 }
1622 }
1624 return NL_SKIP;
1625 }
1628 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1629 struct wpa_signal_info *sig)
1630 {
1631 struct nl_msg *msg;
1633 sig->current_signal = -9999;
1634 sig->current_txrate = 0;
1636 msg = nlmsg_alloc();
1637 if (!msg)
1638 return -ENOMEM;
1640 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1642 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1643 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1645 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1646 nla_put_failure:
1647 return -ENOBUFS;
1648 }
1651 static int get_link_noise(struct nl_msg *msg, void *arg)
1652 {
1653 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1654 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1655 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1656 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1657 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1658 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1659 };
1660 struct wpa_signal_info *sig_change = arg;
1662 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1663 genlmsg_attrlen(gnlh, 0), NULL);
1665 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1666 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1667 return NL_SKIP;
1668 }
1670 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1671 tb[NL80211_ATTR_SURVEY_INFO],
1672 survey_policy)) {
1673 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1674 "attributes!");
1675 return NL_SKIP;
1676 }
1678 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1679 return NL_SKIP;
1681 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1682 sig_change->frequency)
1683 return NL_SKIP;
1685 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1686 return NL_SKIP;
1688 sig_change->current_noise =
1689 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1691 return NL_SKIP;
1692 }
1695 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1696 struct wpa_signal_info *sig_change)
1697 {
1698 struct nl_msg *msg;
1700 sig_change->current_noise = 9999;
1701 sig_change->frequency = drv->assoc_freq;
1703 msg = nlmsg_alloc();
1704 if (!msg)
1705 return -ENOMEM;
1707 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1709 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1711 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1712 nla_put_failure:
1713 return -ENOBUFS;
1714 }
1717 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1718 {
1719 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1720 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1721 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1722 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1723 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1724 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1725 };
1726 struct wpa_scan_results *scan_results = arg;
1727 struct wpa_scan_res *scan_res;
1728 size_t i;
1730 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1731 genlmsg_attrlen(gnlh, 0), NULL);
1733 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1734 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1735 return NL_SKIP;
1736 }
1738 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1739 tb[NL80211_ATTR_SURVEY_INFO],
1740 survey_policy)) {
1741 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1742 "attributes");
1743 return NL_SKIP;
1744 }
1746 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1747 return NL_SKIP;
1749 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1750 return NL_SKIP;
1752 for (i = 0; i < scan_results->num; ++i) {
1753 scan_res = scan_results->res[i];
1754 if (!scan_res)
1755 continue;
1756 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1757 scan_res->freq)
1758 continue;
1759 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1760 continue;
1761 scan_res->noise = (s8)
1762 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1763 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1764 }
1766 return NL_SKIP;
1767 }
1770 static int nl80211_get_noise_for_scan_results(
1771 struct wpa_driver_nl80211_data *drv,
1772 struct wpa_scan_results *scan_res)
1773 {
1774 struct nl_msg *msg;
1776 msg = nlmsg_alloc();
1777 if (!msg)
1778 return -ENOMEM;
1780 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1782 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1784 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1785 scan_res);
1786 nla_put_failure:
1787 return -ENOBUFS;
1788 }
1791 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1792 struct nlattr *tb[])
1793 {
1794 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1795 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1796 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1797 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1798 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1799 };
1800 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1801 enum nl80211_cqm_rssi_threshold_event event;
1802 union wpa_event_data ed;
1803 struct wpa_signal_info sig;
1804 int res;
1806 if (tb[NL80211_ATTR_CQM] == NULL ||
1807 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1808 cqm_policy)) {
1809 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1810 return;
1811 }
1813 os_memset(&ed, 0, sizeof(ed));
1815 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1816 if (!tb[NL80211_ATTR_MAC])
1817 return;
1818 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1819 ETH_ALEN);
1820 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1821 return;
1822 }
1824 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1825 return;
1826 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1828 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1829 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1830 "event: RSSI high");
1831 ed.signal_change.above_threshold = 1;
1832 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1833 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1834 "event: RSSI low");
1835 ed.signal_change.above_threshold = 0;
1836 } else
1837 return;
1839 res = nl80211_get_link_signal(drv, &sig);
1840 if (res == 0) {
1841 ed.signal_change.current_signal = sig.current_signal;
1842 ed.signal_change.current_txrate = sig.current_txrate;
1843 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1844 sig.current_signal, sig.current_txrate);
1845 }
1847 res = nl80211_get_link_noise(drv, &sig);
1848 if (res == 0) {
1849 ed.signal_change.current_noise = sig.current_noise;
1850 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1851 sig.current_noise);
1852 }
1854 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1855 }
1858 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1859 struct nlattr **tb)
1860 {
1861 u8 *addr;
1862 union wpa_event_data data;
1864 if (tb[NL80211_ATTR_MAC] == NULL)
1865 return;
1866 addr = nla_data(tb[NL80211_ATTR_MAC]);
1867 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1869 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1870 u8 *ies = NULL;
1871 size_t ies_len = 0;
1872 if (tb[NL80211_ATTR_IE]) {
1873 ies = nla_data(tb[NL80211_ATTR_IE]);
1874 ies_len = nla_len(tb[NL80211_ATTR_IE]);
1875 }
1876 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1877 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1878 return;
1879 }
1881 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1882 return;
1884 os_memset(&data, 0, sizeof(data));
1885 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1886 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1887 }
1890 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1891 struct nlattr **tb)
1892 {
1893 u8 *addr;
1894 union wpa_event_data data;
1896 if (tb[NL80211_ATTR_MAC] == NULL)
1897 return;
1898 addr = nla_data(tb[NL80211_ATTR_MAC]);
1899 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1900 MAC2STR(addr));
1902 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1903 drv_event_disassoc(drv->ctx, addr);
1904 return;
1905 }
1907 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1908 return;
1910 os_memset(&data, 0, sizeof(data));
1911 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1912 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1913 }
1916 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1917 struct nlattr **tb)
1918 {
1919 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1920 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1921 [NL80211_REKEY_DATA_KEK] = {
1922 .minlen = NL80211_KEK_LEN,
1923 .maxlen = NL80211_KEK_LEN,
1924 },
1925 [NL80211_REKEY_DATA_KCK] = {
1926 .minlen = NL80211_KCK_LEN,
1927 .maxlen = NL80211_KCK_LEN,
1928 },
1929 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1930 .minlen = NL80211_REPLAY_CTR_LEN,
1931 .maxlen = NL80211_REPLAY_CTR_LEN,
1932 },
1933 };
1934 union wpa_event_data data;
1936 if (!tb[NL80211_ATTR_MAC])
1937 return;
1938 if (!tb[NL80211_ATTR_REKEY_DATA])
1939 return;
1940 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
1941 tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
1942 return;
1943 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
1944 return;
1946 os_memset(&data, 0, sizeof(data));
1947 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
1948 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
1949 MAC2STR(data.driver_gtk_rekey.bssid));
1950 data.driver_gtk_rekey.replay_ctr =
1951 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
1952 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
1953 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
1954 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
1955 }
1958 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
1959 struct nlattr **tb)
1960 {
1961 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
1962 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
1963 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
1964 [NL80211_PMKSA_CANDIDATE_BSSID] = {
1965 .minlen = ETH_ALEN,
1966 .maxlen = ETH_ALEN,
1967 },
1968 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
1969 };
1970 union wpa_event_data data;
1972 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
1973 return;
1974 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
1975 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
1976 return;
1977 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
1978 !cand[NL80211_PMKSA_CANDIDATE_BSSID])
1979 return;
1981 os_memset(&data, 0, sizeof(data));
1982 os_memcpy(data.pmkid_candidate.bssid,
1983 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
1984 data.pmkid_candidate.index =
1985 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
1986 data.pmkid_candidate.preauth =
1987 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
1988 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
1989 }
1992 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
1993 struct nlattr **tb)
1994 {
1995 union wpa_event_data data;
1997 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
1998 return;
2000 os_memset(&data, 0, sizeof(data));
2001 os_memcpy(data.client_poll.addr,
2002 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2004 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2005 }
2008 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2009 int wds)
2010 {
2011 struct wpa_driver_nl80211_data *drv = bss->drv;
2012 union wpa_event_data event;
2013 u8 bssid[ETH_ALEN];
2015 if (!tb[NL80211_ATTR_MAC])
2016 return;
2018 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, bssid) <
2019 0)
2020 return;
2022 os_memset(&event, 0, sizeof(event));
2023 event.rx_from_unknown.bssid = bssid;
2024 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2025 event.rx_from_unknown.wds = wds;
2027 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2028 }
2031 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
2032 int cmd, struct nlattr **tb)
2033 {
2034 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2035 (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2036 cmd == NL80211_CMD_SCAN_ABORTED)) {
2037 wpa_driver_nl80211_set_mode(&drv->first_bss,
2038 drv->ap_scan_as_station);
2039 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2040 }
2042 switch (cmd) {
2043 case NL80211_CMD_TRIGGER_SCAN:
2044 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
2045 break;
2046 case NL80211_CMD_START_SCHED_SCAN:
2047 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
2048 break;
2049 case NL80211_CMD_SCHED_SCAN_STOPPED:
2050 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
2051 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2052 break;
2053 case NL80211_CMD_NEW_SCAN_RESULTS:
2054 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
2055 drv->scan_complete_events = 1;
2056 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2057 drv->ctx);
2058 send_scan_event(drv, 0, tb);
2059 break;
2060 case NL80211_CMD_SCHED_SCAN_RESULTS:
2061 wpa_printf(MSG_DEBUG,
2062 "nl80211: New sched scan results available");
2063 send_scan_event(drv, 0, tb);
2064 break;
2065 case NL80211_CMD_SCAN_ABORTED:
2066 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
2067 /*
2068 * Need to indicate that scan results are available in order
2069 * not to make wpa_supplicant stop its scanning.
2070 */
2071 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2072 drv->ctx);
2073 send_scan_event(drv, 1, tb);
2074 break;
2075 case NL80211_CMD_AUTHENTICATE:
2076 case NL80211_CMD_ASSOCIATE:
2077 case NL80211_CMD_DEAUTHENTICATE:
2078 case NL80211_CMD_DISASSOCIATE:
2079 case NL80211_CMD_FRAME_TX_STATUS:
2080 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2081 case NL80211_CMD_UNPROT_DISASSOCIATE:
2082 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME],
2083 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2084 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2085 tb[NL80211_ATTR_COOKIE]);
2086 break;
2087 case NL80211_CMD_CONNECT:
2088 case NL80211_CMD_ROAM:
2089 mlme_event_connect(drv, cmd,
2090 tb[NL80211_ATTR_STATUS_CODE],
2091 tb[NL80211_ATTR_MAC],
2092 tb[NL80211_ATTR_REQ_IE],
2093 tb[NL80211_ATTR_RESP_IE]);
2094 break;
2095 case NL80211_CMD_DISCONNECT:
2096 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2097 tb[NL80211_ATTR_MAC]);
2098 break;
2099 case NL80211_CMD_MICHAEL_MIC_FAILURE:
2100 mlme_event_michael_mic_failure(drv, tb);
2101 break;
2102 case NL80211_CMD_JOIN_IBSS:
2103 mlme_event_join_ibss(drv, tb);
2104 break;
2105 case NL80211_CMD_REMAIN_ON_CHANNEL:
2106 mlme_event_remain_on_channel(drv, 0, tb);
2107 break;
2108 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2109 mlme_event_remain_on_channel(drv, 1, tb);
2110 break;
2111 case NL80211_CMD_NOTIFY_CQM:
2112 nl80211_cqm_event(drv, tb);
2113 break;
2114 case NL80211_CMD_REG_CHANGE:
2115 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2116 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2117 NULL);
2118 break;
2119 case NL80211_CMD_REG_BEACON_HINT:
2120 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2121 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2122 NULL);
2123 break;
2124 case NL80211_CMD_NEW_STATION:
2125 nl80211_new_station_event(drv, tb);
2126 break;
2127 case NL80211_CMD_DEL_STATION:
2128 nl80211_del_station_event(drv, tb);
2129 break;
2130 case NL80211_CMD_SET_REKEY_OFFLOAD:
2131 nl80211_rekey_offload_event(drv, tb);
2132 break;
2133 case NL80211_CMD_PMKSA_CANDIDATE:
2134 nl80211_pmksa_candidate_event(drv, tb);
2135 break;
2136 case NL80211_CMD_PROBE_CLIENT:
2137 nl80211_client_probe_event(drv, tb);
2138 break;
2139 default:
2140 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2141 "(cmd=%d)", cmd);
2142 break;
2143 }
2144 }
2147 static int process_drv_event(struct nl_msg *msg, void *arg)
2148 {
2149 struct wpa_driver_nl80211_data *drv = arg;
2150 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2151 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2153 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2154 genlmsg_attrlen(gnlh, 0), NULL);
2156 if (tb[NL80211_ATTR_IFINDEX]) {
2157 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2158 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
2159 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
2160 " for foreign interface (ifindex %d)",
2161 gnlh->cmd, ifindex);
2162 return NL_SKIP;
2163 }
2164 }
2166 do_process_drv_event(drv, gnlh->cmd, tb);
2167 return NL_SKIP;
2168 }
2171 static int process_global_event(struct nl_msg *msg, void *arg)
2172 {
2173 struct nl80211_global *global = arg;
2174 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2175 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2176 struct wpa_driver_nl80211_data *drv;
2177 int ifidx = -1;
2179 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2180 genlmsg_attrlen(gnlh, 0), NULL);
2182 if (tb[NL80211_ATTR_IFINDEX])
2183 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2185 dl_list_for_each(drv, &global->interfaces,
2186 struct wpa_driver_nl80211_data, list) {
2187 if (ifidx == -1 || ifidx == drv->ifindex ||
2188 have_ifidx(drv, ifidx))
2189 do_process_drv_event(drv, gnlh->cmd, tb);
2190 }
2192 return NL_SKIP;
2193 }
2196 static int process_bss_event(struct nl_msg *msg, void *arg)
2197 {
2198 struct i802_bss *bss = arg;
2199 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2200 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2202 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2203 genlmsg_attrlen(gnlh, 0), NULL);
2205 switch (gnlh->cmd) {
2206 case NL80211_CMD_FRAME:
2207 case NL80211_CMD_FRAME_TX_STATUS:
2208 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2209 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2210 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2211 tb[NL80211_ATTR_COOKIE]);
2212 break;
2213 case NL80211_CMD_UNEXPECTED_FRAME:
2214 nl80211_spurious_frame(bss, tb, 0);
2215 break;
2216 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2217 nl80211_spurious_frame(bss, tb, 1);
2218 break;
2219 default:
2220 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2221 "(cmd=%d)", gnlh->cmd);
2222 break;
2223 }
2225 return NL_SKIP;
2226 }
2229 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2230 void *handle)
2231 {
2232 struct nl_cb *cb = eloop_ctx;
2234 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
2236 nl_recvmsgs(handle, cb);
2237 }
2240 /**
2241 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2242 * @priv: driver_nl80211 private data
2243 * @alpha2_arg: country to which to switch to
2244 * Returns: 0 on success, -1 on failure
2245 *
2246 * This asks nl80211 to set the regulatory domain for given
2247 * country ISO / IEC alpha2.
2248 */
2249 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2250 {
2251 struct i802_bss *bss = priv;
2252 struct wpa_driver_nl80211_data *drv = bss->drv;
2253 char alpha2[3];
2254 struct nl_msg *msg;
2256 msg = nlmsg_alloc();
2257 if (!msg)
2258 return -ENOMEM;
2260 alpha2[0] = alpha2_arg[0];
2261 alpha2[1] = alpha2_arg[1];
2262 alpha2[2] = '\0';
2264 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2266 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2267 if (send_and_recv_msgs(drv, msg, NULL, NULL))
2268 return -EINVAL;
2269 return 0;
2270 nla_put_failure:
2271 return -EINVAL;
2272 }
2275 struct wiphy_info_data {
2276 struct wpa_driver_capa *capa;
2278 unsigned int error:1;
2279 unsigned int device_ap_sme:1;
2280 unsigned int poll_command_supported:1;
2281 unsigned int data_tx_status:1;
2282 };
2285 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2286 {
2287 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2288 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2289 struct wiphy_info_data *info = arg;
2290 int p2p_go_supported = 0, p2p_client_supported = 0;
2291 int p2p_concurrent = 0;
2292 int auth_supported = 0, connect_supported = 0;
2293 struct wpa_driver_capa *capa = info->capa;
2294 static struct nla_policy
2295 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2296 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2297 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2298 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2299 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2300 },
2301 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2302 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2303 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2304 };
2306 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2307 genlmsg_attrlen(gnlh, 0), NULL);
2309 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
2310 capa->max_scan_ssids =
2311 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
2313 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
2314 capa->max_sched_scan_ssids =
2315 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
2317 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
2318 capa->max_match_sets =
2319 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
2321 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
2322 struct nlattr *nl_mode;
2323 int i;
2324 nla_for_each_nested(nl_mode,
2325 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
2326 switch (nla_type(nl_mode)) {
2327 case NL80211_IFTYPE_AP:
2328 capa->flags |= WPA_DRIVER_FLAGS_AP;
2329 break;
2330 case NL80211_IFTYPE_P2P_GO:
2331 p2p_go_supported = 1;
2332 break;
2333 case NL80211_IFTYPE_P2P_CLIENT:
2334 p2p_client_supported = 1;
2335 break;
2336 }
2337 }
2338 }
2340 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
2341 struct nlattr *nl_combi;
2342 int rem_combi;
2344 nla_for_each_nested(nl_combi,
2345 tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
2346 rem_combi) {
2347 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2348 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2349 struct nlattr *nl_limit, *nl_mode;
2350 int err, rem_limit, rem_mode;
2351 int combination_has_p2p = 0, combination_has_mgd = 0;
2353 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2354 nl_combi,
2355 iface_combination_policy);
2356 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2357 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2358 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2359 goto broken_combination;
2361 nla_for_each_nested(nl_limit,
2362 tb_comb[NL80211_IFACE_COMB_LIMITS],
2363 rem_limit) {
2364 err = nla_parse_nested(tb_limit,
2365 MAX_NL80211_IFACE_LIMIT,
2366 nl_limit,
2367 iface_limit_policy);
2368 if (err ||
2369 !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2370 goto broken_combination;
2372 nla_for_each_nested(
2373 nl_mode,
2374 tb_limit[NL80211_IFACE_LIMIT_TYPES],
2375 rem_mode) {
2376 int ift = nla_type(nl_mode);
2377 if (ift == NL80211_IFTYPE_P2P_GO ||
2378 ift == NL80211_IFTYPE_P2P_CLIENT)
2379 combination_has_p2p = 1;
2380 if (ift == NL80211_IFTYPE_STATION)
2381 combination_has_mgd = 1;
2382 }
2383 if (combination_has_p2p && combination_has_mgd)
2384 break;
2385 }
2387 if (combination_has_p2p && combination_has_mgd) {
2388 p2p_concurrent = 1;
2389 break;
2390 }
2392 broken_combination:
2393 ;
2394 }
2395 }
2397 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
2398 struct nlattr *nl_cmd;
2399 int i;
2401 nla_for_each_nested(nl_cmd,
2402 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2403 switch (nla_get_u32(nl_cmd)) {
2404 case NL80211_CMD_AUTHENTICATE:
2405 auth_supported = 1;
2406 break;
2407 case NL80211_CMD_CONNECT:
2408 connect_supported = 1;
2409 break;
2410 case NL80211_CMD_START_SCHED_SCAN:
2411 capa->sched_scan_supported = 1;
2412 break;
2413 case NL80211_CMD_PROBE_CLIENT:
2414 info->poll_command_supported = 1;
2415 break;
2416 }
2417 }
2418 }
2420 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2421 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2422 "off-channel TX");
2423 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2424 }
2426 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2427 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2428 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2429 }
2431 /* default to 5000 since early versions of mac80211 don't set it */
2432 capa->max_remain_on_chan = 5000;
2434 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2435 capa->max_remain_on_chan =
2436 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2438 if (auth_supported)
2439 capa->flags |= WPA_DRIVER_FLAGS_SME;
2440 else if (!connect_supported) {
2441 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2442 "authentication/association or connect commands");
2443 info->error = 1;
2444 }
2446 if (p2p_go_supported && p2p_client_supported)
2447 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2448 if (p2p_concurrent) {
2449 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2450 "interface (driver advertised support)");
2451 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2452 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2453 }
2455 if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2456 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2457 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2459 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2460 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2461 capa->flags |=
2462 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2463 }
2464 }
2466 if (tb[NL80211_ATTR_DEVICE_AP_SME])
2467 info->device_ap_sme = 1;
2469 if (tb[NL80211_ATTR_FEATURE_FLAGS]) {
2470 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]);
2472 if (flags & NL80211_FEATURE_SK_TX_STATUS)
2473 info->data_tx_status = 1;
2474 }
2476 return NL_SKIP;
2477 }
2480 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2481 struct wiphy_info_data *info)
2482 {
2483 struct nl_msg *msg;
2485 os_memset(info, 0, sizeof(*info));
2486 info->capa = &drv->capa;
2488 msg = nlmsg_alloc();
2489 if (!msg)
2490 return -1;
2492 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2494 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2496 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2497 return 0;
2498 msg = NULL;
2499 nla_put_failure:
2500 nlmsg_free(msg);
2501 return -1;
2502 }
2505 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2506 {
2507 struct wiphy_info_data info;
2508 if (wpa_driver_nl80211_get_info(drv, &info))
2509 return -1;
2511 if (info.error)
2512 return -1;
2514 drv->has_capability = 1;
2515 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2516 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2517 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2518 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2519 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2520 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2521 WPA_DRIVER_CAPA_ENC_WEP104 |
2522 WPA_DRIVER_CAPA_ENC_TKIP |
2523 WPA_DRIVER_CAPA_ENC_CCMP;
2524 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2525 WPA_DRIVER_AUTH_SHARED |
2526 WPA_DRIVER_AUTH_LEAP;
2528 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2529 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2530 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2531 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2533 drv->device_ap_sme = info.device_ap_sme;
2534 drv->poll_command_supported = info.poll_command_supported;
2535 drv->data_tx_status = info.data_tx_status;
2537 /*
2538 * If poll command is supported mac80211 is new enough to
2539 * have everything we need to not need monitor interfaces.
2540 */
2541 drv->use_monitor = !info.poll_command_supported;
2543 /*
2544 * If we aren't going to use monitor interfaces, but the
2545 * driver doesn't support data TX status, we won't get TX
2546 * status for EAPOL frames.
2547 */
2548 if (!drv->use_monitor && !info.data_tx_status)
2549 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2551 return 0;
2552 }
2555 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2556 {
2557 int ret;
2559 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2560 if (global->nl_cb == NULL) {
2561 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2562 "callbacks");
2563 return -1;
2564 }
2566 if (nl_create_handles(&global->nl, global->nl_cb, "nl"))
2567 goto err;
2569 global->nl80211_id = genl_ctrl_resolve(global->nl.handle, "nl80211");
2570 if (global->nl80211_id < 0) {
2571 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2572 "found");
2573 goto err;
2574 }
2576 if (nl_create_handles(&global->nl_event, global->nl_cb, "event"))
2577 goto err;
2579 ret = nl_get_multicast_id(global, "nl80211", "scan");
2580 if (ret >= 0)
2581 ret = nl_socket_add_membership(global->nl_event.handle, ret);
2582 if (ret < 0) {
2583 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2584 "membership for scan events: %d (%s)",
2585 ret, strerror(-ret));
2586 goto err;
2587 }
2589 ret = nl_get_multicast_id(global, "nl80211", "mlme");
2590 if (ret >= 0)
2591 ret = nl_socket_add_membership(global->nl_event.handle, ret);
2592 if (ret < 0) {
2593 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2594 "membership for mlme events: %d (%s)",
2595 ret, strerror(-ret));
2596 goto err;
2597 }
2599 ret = nl_get_multicast_id(global, "nl80211", "regulatory");
2600 if (ret >= 0)
2601 ret = nl_socket_add_membership(global->nl_event.handle, ret);
2602 if (ret < 0) {
2603 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2604 "membership for regulatory events: %d (%s)",
2605 ret, strerror(-ret));
2606 /* Continue without regulatory events */
2607 }
2609 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2610 no_seq_check, NULL);
2611 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2612 process_global_event, global);
2614 eloop_register_read_sock(nl_socket_get_fd(global->nl_event.handle),
2615 wpa_driver_nl80211_event_receive,
2616 global->nl_cb, global->nl_event.handle);
2618 return 0;
2620 err:
2621 nl_destroy_handles(&global->nl_event);
2622 nl_destroy_handles(&global->nl);
2623 nl_cb_put(global->nl_cb);
2624 return -1;
2625 }
2628 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2629 {
2630 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2631 if (!drv->nl_cb) {
2632 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
2633 return -1;
2634 }
2636 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2637 no_seq_check, NULL);
2638 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2639 process_drv_event, drv);
2641 return 0;
2642 }
2645 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2646 {
2647 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2648 /*
2649 * This may be for any interface; use ifdown event to disable
2650 * interface.
2651 */
2652 }
2655 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2656 {
2657 struct wpa_driver_nl80211_data *drv = ctx;
2658 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2659 if (linux_set_iface_flags(drv->global->ioctl_sock,
2660 drv->first_bss.ifname, 1)) {
2661 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2662 "after rfkill unblock");
2663 return;
2664 }
2665 /* rtnetlink ifup handler will report interface as enabled */
2666 }
2669 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2670 {
2671 /* Find phy (radio) to which this interface belongs */
2672 char buf[90], *pos;
2673 int f, rv;
2675 drv->phyname[0] = '\0';
2676 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2677 drv->first_bss.ifname);
2678 f = open(buf, O_RDONLY);
2679 if (f < 0) {
2680 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2681 buf, strerror(errno));
2682 return;
2683 }
2685 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2686 close(f);
2687 if (rv < 0) {
2688 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2689 buf, strerror(errno));
2690 return;
2691 }
2693 drv->phyname[rv] = '\0';
2694 pos = os_strchr(drv->phyname, '\n');
2695 if (pos)
2696 *pos = '\0';
2697 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2698 drv->first_bss.ifname, drv->phyname);
2699 }
2702 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
2703 void *eloop_ctx,
2704 void *handle)
2705 {
2706 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2707 u8 data[2048];
2708 struct msghdr msg;
2709 struct iovec entry;
2710 struct {
2711 struct cmsghdr cm;
2712 char control[512];
2713 } control;
2714 struct cmsghdr *cmsg;
2715 int res, found_ee = 0, found_wifi = 0, acked = 0;
2716 union wpa_event_data event;
2718 memset(&msg, 0, sizeof(msg));
2719 msg.msg_iov = &entry;
2720 msg.msg_iovlen = 1;
2721 entry.iov_base = data;
2722 entry.iov_len = sizeof(data);
2723 msg.msg_control = &control;
2724 msg.msg_controllen = sizeof(control);
2726 res = recvmsg(sock, &msg, MSG_ERRQUEUE);
2727 /* if error or not fitting 802.3 header, return */
2728 if (res < 14)
2729 return;
2731 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
2732 {
2733 if (cmsg->cmsg_level == SOL_SOCKET &&
2734 cmsg->cmsg_type == SCM_WIFI_STATUS) {
2735 int *ack;
2737 found_wifi = 1;
2738 ack = (void *)CMSG_DATA(cmsg);
2739 acked = *ack;
2740 }
2742 if (cmsg->cmsg_level == SOL_PACKET &&
2743 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
2744 struct sock_extended_err *err =
2745 (struct sock_extended_err *)CMSG_DATA(cmsg);
2747 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
2748 found_ee = 1;
2749 }
2750 }
2752 if (!found_ee || !found_wifi)
2753 return;
2755 memset(&event, 0, sizeof(event));
2756 event.eapol_tx_status.dst = data;
2757 event.eapol_tx_status.data = data + 14;
2758 event.eapol_tx_status.data_len = res - 14;
2759 event.eapol_tx_status.ack = acked;
2760 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
2761 }
2764 static int nl80211_init_bss(struct i802_bss *bss)
2765 {
2766 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2767 if (!bss->nl_cb)
2768 return -1;
2770 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2771 no_seq_check, NULL);
2772 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2773 process_bss_event, bss);
2775 return 0;
2776 }
2779 static void nl80211_destroy_bss(struct i802_bss *bss)
2780 {
2781 nl_cb_put(bss->nl_cb);
2782 bss->nl_cb = NULL;
2783 }
2786 /**
2787 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2788 * @ctx: context to be used when calling wpa_supplicant functions,
2789 * e.g., wpa_supplicant_event()
2790 * @ifname: interface name, e.g., wlan0
2791 * @global_priv: private driver global data from global_init()
2792 * Returns: Pointer to private data, %NULL on failure
2793 */
2794 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2795 void *global_priv)
2796 {
2797 struct wpa_driver_nl80211_data *drv;
2798 struct rfkill_config *rcfg;
2799 struct i802_bss *bss;
2801 if (global_priv == NULL)
2802 return NULL;
2803 drv = os_zalloc(sizeof(*drv));
2804 if (drv == NULL)
2805 return NULL;
2806 drv->global = global_priv;
2807 drv->ctx = ctx;
2808 bss = &drv->first_bss;
2809 bss->drv = drv;
2810 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2811 drv->monitor_ifidx = -1;
2812 drv->monitor_sock = -1;
2813 drv->eapol_tx_sock = -1;
2814 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2816 if (wpa_driver_nl80211_init_nl(drv)) {
2817 os_free(drv);
2818 return NULL;
2819 }
2821 if (nl80211_init_bss(bss))
2822 goto failed;
2824 nl80211_get_phy_name(drv);
2826 rcfg = os_zalloc(sizeof(*rcfg));
2827 if (rcfg == NULL)
2828 goto failed;
2829 rcfg->ctx = drv;
2830 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2831 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2832 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2833 drv->rfkill = rfkill_init(rcfg);
2834 if (drv->rfkill == NULL) {
2835 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2836 os_free(rcfg);
2837 }
2839 if (wpa_driver_nl80211_finish_drv_init(drv))
2840 goto failed;
2842 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
2843 if (drv->eapol_tx_sock < 0)
2844 goto failed;
2846 if (drv->data_tx_status) {
2847 int enabled = 1;
2849 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
2850 &enabled, sizeof(enabled)) < 0) {
2851 wpa_printf(MSG_DEBUG,
2852 "nl80211: wifi status sockopt failed\n");
2853 drv->data_tx_status = 0;
2854 if (!drv->use_monitor)
2855 drv->capa.flags &=
2856 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2857 } else {
2858 eloop_register_read_sock(drv->eapol_tx_sock,
2859 wpa_driver_nl80211_handle_eapol_tx_status,
2860 drv, NULL);
2861 }
2862 }
2864 if (drv->global) {
2865 dl_list_add(&drv->global->interfaces, &drv->list);
2866 drv->in_interface_list = 1;
2867 }
2869 return bss;
2871 failed:
2872 wpa_driver_nl80211_deinit(bss);
2873 return NULL;
2874 }
2877 static int nl80211_register_frame(struct i802_bss *bss,
2878 struct nl_handle *nl_handle,
2879 u16 type, const u8 *match, size_t match_len)
2880 {
2881 struct wpa_driver_nl80211_data *drv = bss->drv;
2882 struct nl_msg *msg;
2883 int ret = -1;
2885 msg = nlmsg_alloc();
2886 if (!msg)
2887 return -1;
2889 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
2891 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
2892 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
2893 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
2895 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
2896 msg = NULL;
2897 if (ret) {
2898 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
2899 "failed (type=%u): ret=%d (%s)",
2900 type, ret, strerror(-ret));
2901 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
2902 match, match_len);
2903 goto nla_put_failure;
2904 }
2905 ret = 0;
2906 nla_put_failure:
2907 nlmsg_free(msg);
2908 return ret;
2909 }
2912 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
2913 {
2914 struct wpa_driver_nl80211_data *drv = bss->drv;
2916 if (bss->nl_mgmt.handle) {
2917 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
2918 "already on!");
2919 return -1;
2920 }
2922 if (nl_create_handles(&bss->nl_mgmt, drv->nl_cb, "mgmt"))
2923 return -1;
2925 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt.handle),
2926 wpa_driver_nl80211_event_receive, bss->nl_cb,
2927 bss->nl_mgmt.handle);
2929 return 0;
2930 }
2933 static int nl80211_register_action_frame(struct i802_bss *bss,
2934 const u8 *match, size_t match_len)
2935 {
2936 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
2937 return nl80211_register_frame(bss, bss->nl_mgmt.handle,
2938 type, match, match_len);
2939 }
2942 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
2943 {
2944 struct wpa_driver_nl80211_data *drv = bss->drv;
2946 if (nl80211_alloc_mgmt_handle(bss))
2947 return -1;
2949 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
2950 /* GAS Initial Request */
2951 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
2952 return -1;
2953 /* GAS Initial Response */
2954 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
2955 return -1;
2956 /* GAS Comeback Request */
2957 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
2958 return -1;
2959 /* GAS Comeback Response */
2960 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
2961 return -1;
2962 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
2963 #ifdef CONFIG_P2P
2964 /* P2P Public Action */
2965 if (nl80211_register_action_frame(bss,
2966 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
2967 6) < 0)
2968 return -1;
2969 /* P2P Action */
2970 if (nl80211_register_action_frame(bss,
2971 (u8 *) "\x7f\x50\x6f\x9a\x09",
2972 5) < 0)
2973 return -1;
2974 #endif /* CONFIG_P2P */
2975 #ifdef CONFIG_IEEE80211W
2976 /* SA Query Response */
2977 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
2978 return -1;
2979 #endif /* CONFIG_IEEE80211W */
2980 #ifdef CONFIG_TDLS
2981 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
2982 /* TDLS Discovery Response */
2983 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0e", 2) <
2984 0)
2985 return -1;
2986 }
2987 #endif /* CONFIG_TDLS */
2989 /* FT Action frames */
2990 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
2991 return -1;
2992 else
2993 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
2994 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
2996 /* WNM - BSS Transition Management Request */
2997 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
2998 return -1;
3000 return 0;
3001 }
3004 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3005 {
3006 struct wpa_driver_nl80211_data *drv = bss->drv;
3007 struct nl_msg *msg;
3008 int ret = -1;
3010 msg = nlmsg_alloc();
3011 if (!msg)
3012 return -1;
3014 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3016 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3018 ret = send_and_recv(drv->global, bss->nl_mgmt.handle, msg, NULL, NULL);
3019 msg = NULL;
3020 if (ret) {
3021 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3022 "failed: ret=%d (%s)",
3023 ret, strerror(-ret));
3024 goto nla_put_failure;
3025 }
3026 ret = 0;
3027 nla_put_failure:
3028 nlmsg_free(msg);
3029 return ret;
3030 }
3033 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3034 {
3035 static const int stypes[] = {
3036 WLAN_FC_STYPE_AUTH,
3037 WLAN_FC_STYPE_ASSOC_REQ,
3038 WLAN_FC_STYPE_REASSOC_REQ,
3039 WLAN_FC_STYPE_DISASSOC,
3040 WLAN_FC_STYPE_DEAUTH,
3041 WLAN_FC_STYPE_ACTION,
3042 WLAN_FC_STYPE_PROBE_REQ,
3043 /* Beacon doesn't work as mac80211 doesn't currently allow
3044 * it, but it wouldn't really be the right thing anyway as
3045 * it isn't per interface ... maybe just dump the scan
3046 * results periodically for OLBC?
3047 */
3048 // WLAN_FC_STYPE_BEACON,
3049 };
3050 unsigned int i;
3052 if (nl80211_alloc_mgmt_handle(bss))
3053 return -1;
3055 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3056 if (nl80211_register_frame(bss, bss->nl_mgmt.handle,
3057 (WLAN_FC_TYPE_MGMT << 2) |
3058 (stypes[i] << 4),
3059 NULL, 0) < 0) {
3060 goto out_err;
3061 }
3062 }
3064 if (nl80211_register_spurious_class3(bss))
3065 goto out_err;
3067 if (nl80211_get_wiphy_data_ap(bss) == NULL)
3068 goto out_err;
3070 return 0;
3072 out_err:
3073 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt.handle));
3074 nl_destroy_handles(&bss->nl_mgmt);
3075 return -1;
3076 }
3079 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss)
3080 {
3081 if (bss->nl_mgmt.handle == NULL)
3082 return;
3083 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt.handle));
3084 nl_destroy_handles(&bss->nl_mgmt);
3086 nl80211_put_wiphy_data_ap(bss);
3087 }
3090 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3091 {
3092 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3093 }
3096 static int
3097 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3098 {
3099 struct i802_bss *bss = &drv->first_bss;
3100 int send_rfkill_event = 0;
3102 drv->ifindex = if_nametoindex(bss->ifname);
3103 drv->first_bss.ifindex = drv->ifindex;
3105 #ifndef HOSTAPD
3106 /*
3107 * Make sure the interface starts up in station mode unless this is a
3108 * dynamically added interface (e.g., P2P) that was already configured
3109 * with proper iftype.
3110 */
3111 if (drv->ifindex != drv->global->if_add_ifindex &&
3112 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3113 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3114 "use managed mode");
3115 return -1;
3116 }
3118 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3119 if (rfkill_is_blocked(drv->rfkill)) {
3120 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3121 "interface '%s' due to rfkill",
3122 bss->ifname);
3123 drv->if_disabled = 1;
3124 send_rfkill_event = 1;
3125 } else {
3126 wpa_printf(MSG_ERROR, "nl80211: Could not set "
3127 "interface '%s' UP", bss->ifname);
3128 return -1;
3129 }
3130 }
3132 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3133 1, IF_OPER_DORMANT);
3134 #endif /* HOSTAPD */
3136 if (wpa_driver_nl80211_capa(drv))
3137 return -1;
3139 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3140 drv->addr))
3141 return -1;
3143 if (send_rfkill_event) {
3144 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3145 drv, drv->ctx);
3146 }
3148 return 0;
3149 }
3152 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3153 {
3154 struct nl_msg *msg;
3156 msg = nlmsg_alloc();
3157 if (!msg)
3158 return -ENOMEM;
3160 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3161 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3163 return send_and_recv_msgs(drv, msg, NULL, NULL);
3164 nla_put_failure:
3165 return -ENOBUFS;
3166 }
3169 /**
3170 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3171 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3172 *
3173 * Shut down driver interface and processing of driver events. Free
3174 * private data buffer if one was allocated in wpa_driver_nl80211_init().
3175 */
3176 static void wpa_driver_nl80211_deinit(void *priv)
3177 {
3178 struct i802_bss *bss = priv;
3179 struct wpa_driver_nl80211_data *drv = bss->drv;
3181 if (drv->data_tx_status)
3182 eloop_unregister_read_sock(drv->eapol_tx_sock);
3183 if (drv->eapol_tx_sock >= 0)
3184 close(drv->eapol_tx_sock);
3186 if (bss->nl_preq.handle)
3187 wpa_driver_nl80211_probe_req_report(bss, 0);
3188 if (bss->added_if_into_bridge) {
3189 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3190 bss->ifname) < 0)
3191 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3192 "interface %s from bridge %s: %s",
3193 bss->ifname, bss->brname, strerror(errno));
3194 }
3195 if (bss->added_bridge) {
3196 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3197 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3198 "bridge %s: %s",
3199 bss->brname, strerror(errno));
3200 }
3202 nl80211_remove_monitor_interface(drv);
3204 if (is_ap_interface(drv->nlmode))
3205 wpa_driver_nl80211_del_beacon(drv);
3207 #ifdef HOSTAPD
3208 if (drv->last_freq_ht) {
3209 /* Clear HT flags from the driver */
3210 struct hostapd_freq_params freq;
3211 os_memset(&freq, 0, sizeof(freq));
3212 freq.freq = drv->last_freq;
3213 i802_set_freq(priv, &freq);
3214 }
3216 if (drv->eapol_sock >= 0) {
3217 eloop_unregister_read_sock(drv->eapol_sock);
3218 close(drv->eapol_sock);
3219 }
3221 if (drv->if_indices != drv->default_if_indices)
3222 os_free(drv->if_indices);
3223 #endif /* HOSTAPD */
3225 if (drv->disabled_11b_rates)
3226 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3228 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3229 IF_OPER_UP);
3230 rfkill_deinit(drv->rfkill);
3232 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3234 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3235 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3236 nl80211_mgmt_unsubscribe(bss);
3238 nl_cb_put(drv->nl_cb);
3240 nl80211_destroy_bss(&drv->first_bss);
3242 os_free(drv->filter_ssids);
3244 os_free(drv->auth_ie);
3246 if (drv->in_interface_list)
3247 dl_list_del(&drv->list);
3249 os_free(drv);
3250 }
3253 /**
3254 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3255 * @eloop_ctx: Driver private data
3256 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3257 *
3258 * This function can be used as registered timeout when starting a scan to
3259 * generate a scan completed event if the driver does not report this.
3260 */
3261 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3262 {
3263 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3264 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
3265 wpa_driver_nl80211_set_mode(&drv->first_bss,
3266 drv->ap_scan_as_station);
3267 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3268 }
3269 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
3270 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
3271 }
3274 /**
3275 * wpa_driver_nl80211_scan - Request the driver to initiate scan
3276 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3277 * @params: Scan parameters
3278 * Returns: 0 on success, -1 on failure
3279 */
3280 static int wpa_driver_nl80211_scan(void *priv,
3281 struct wpa_driver_scan_params *params)
3282 {
3283 struct i802_bss *bss = priv;
3284 struct wpa_driver_nl80211_data *drv = bss->drv;
3285 int ret = 0, timeout;
3286 struct nl_msg *msg, *ssids, *freqs, *rates;
3287 size_t i;
3289 drv->scan_for_auth = 0;
3291 msg = nlmsg_alloc();
3292 ssids = nlmsg_alloc();
3293 freqs = nlmsg_alloc();
3294 rates = nlmsg_alloc();
3295 if (!msg || !ssids || !freqs || !rates) {
3296 nlmsg_free(msg);
3297 nlmsg_free(ssids);
3298 nlmsg_free(freqs);
3299 nlmsg_free(rates);
3300 return -1;
3301 }
3303 os_free(drv->filter_ssids);
3304 drv->filter_ssids = params->filter_ssids;
3305 params->filter_ssids = NULL;
3306 drv->num_filter_ssids = params->num_filter_ssids;
3308 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
3310 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3312 for (i = 0; i < params->num_ssids; i++) {
3313 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
3314 params->ssids[i].ssid,
3315 params->ssids[i].ssid_len);
3316 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3317 params->ssids[i].ssid);
3318 }
3319 if (params->num_ssids)
3320 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3322 if (params->extra_ies) {
3323 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
3324 params->extra_ies, params->extra_ies_len);
3325 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3326 params->extra_ies);
3327 }
3329 if (params->freqs) {
3330 for (i = 0; params->freqs[i]; i++) {
3331 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3332 "MHz", params->freqs[i]);
3333 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3334 }
3335 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3336 }
3338 if (params->p2p_probe) {
3339 /*
3340 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
3341 * by masking out everything else apart from the OFDM rates 6,
3342 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
3343 * rates are left enabled.
3344 */
3345 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
3346 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
3347 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
3349 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
3350 }
3352 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3353 msg = NULL;
3354 if (ret) {
3355 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
3356 "(%s)", ret, strerror(-ret));
3357 #ifdef HOSTAPD
3358 if (is_ap_interface(drv->nlmode)) {
3359 /*
3360 * mac80211 does not allow scan requests in AP mode, so
3361 * try to do this in station mode.
3362 */
3363 if (wpa_driver_nl80211_set_mode(
3364 bss, NL80211_IFTYPE_STATION))
3365 goto nla_put_failure;
3367 if (wpa_driver_nl80211_scan(drv, params)) {
3368 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
3369 goto nla_put_failure;
3370 }
3372 /* Restore AP mode when processing scan results */
3373 drv->ap_scan_as_station = drv->nlmode;
3374 ret = 0;
3375 } else
3376 goto nla_put_failure;
3377 #else /* HOSTAPD */
3378 goto nla_put_failure;
3379 #endif /* HOSTAPD */
3380 }
3382 /* Not all drivers generate "scan completed" wireless event, so try to
3383 * read results after a timeout. */
3384 timeout = 10;
3385 if (drv->scan_complete_events) {
3386 /*
3387 * The driver seems to deliver events to notify when scan is
3388 * complete, so use longer timeout to avoid race conditions
3389 * with scanning and following association request.
3390 */
3391 timeout = 30;
3392 }
3393 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
3394 "seconds", ret, timeout);
3395 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3396 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
3397 drv, drv->ctx);
3399 nla_put_failure:
3400 nlmsg_free(ssids);
3401 nlmsg_free(msg);
3402 nlmsg_free(freqs);
3403 nlmsg_free(rates);
3404 return ret;
3405 }
3408 /**
3409 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
3410 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3411 * @params: Scan parameters
3412 * @interval: Interval between scan cycles in milliseconds
3413 * Returns: 0 on success, -1 on failure or if not supported
3414 */
3415 static int wpa_driver_nl80211_sched_scan(void *priv,
3416 struct wpa_driver_scan_params *params,
3417 u32 interval)
3418 {
3419 struct i802_bss *bss = priv;
3420 struct wpa_driver_nl80211_data *drv = bss->drv;
3421 int ret = 0;
3422 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
3423 size_t i;
3425 #ifdef ANDROID
3426 if (!drv->capa.sched_scan_supported)
3427 return android_pno_start(bss, params);
3428 #endif /* ANDROID */
3430 msg = nlmsg_alloc();
3431 ssids = nlmsg_alloc();
3432 freqs = nlmsg_alloc();
3433 if (!msg || !ssids || !freqs) {
3434 nlmsg_free(msg);
3435 nlmsg_free(ssids);
3436 nlmsg_free(freqs);
3437 return -1;
3438 }
3440 os_free(drv->filter_ssids);
3441 drv->filter_ssids = params->filter_ssids;
3442 params->filter_ssids = NULL;
3443 drv->num_filter_ssids = params->num_filter_ssids;
3445 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
3447 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3449 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
3451 if (drv->num_filter_ssids &&
3452 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) {
3453 match_sets = nlmsg_alloc();
3455 for (i = 0; i < drv->num_filter_ssids; i++) {
3456 wpa_hexdump_ascii(MSG_MSGDUMP,
3457 "nl80211: Sched scan filter SSID",
3458 drv->filter_ssids[i].ssid,
3459 drv->filter_ssids[i].ssid_len);
3461 match_set_ssid = nlmsg_alloc();
3462 nla_put(match_set_ssid,
3463 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
3464 drv->filter_ssids[i].ssid_len,
3465 drv->filter_ssids[i].ssid);
3467 nla_put_nested(match_sets, i + 1, match_set_ssid);
3469 nlmsg_free(match_set_ssid);
3470 }
3472 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
3473 match_sets);
3474 nlmsg_free(match_sets);
3475 }
3477 for (i = 0; i < params->num_ssids; i++) {
3478 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
3479 params->ssids[i].ssid,
3480 params->ssids[i].ssid_len);
3481 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3482 params->ssids[i].ssid);
3483 }
3484 if (params->num_ssids)
3485 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3487 if (params->extra_ies) {
3488 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
3489 params->extra_ies, params->extra_ies_len);
3490 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3491 params->extra_ies);
3492 }
3494 if (params->freqs) {
3495 for (i = 0; params->freqs[i]; i++) {
3496 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3497 "MHz", params->freqs[i]);
3498 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3499 }
3500 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3501 }
3503 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3505 /* TODO: if we get an error here, we should fall back to normal scan */
3507 msg = NULL;
3508 if (ret) {
3509 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
3510 "ret=%d (%s)", ret, strerror(-ret));
3511 goto nla_put_failure;
3512 }
3514 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
3515 "scan interval %d msec", ret, interval);
3517 nla_put_failure:
3518 nlmsg_free(ssids);
3519 nlmsg_free(msg);
3520 nlmsg_free(freqs);
3521 return ret;
3522 }
3525 /**
3526 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
3527 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3528 * Returns: 0 on success, -1 on failure or if not supported
3529 */
3530 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
3531 {
3532 struct i802_bss *bss = priv;
3533 struct wpa_driver_nl80211_data *drv = bss->drv;
3534 int ret = 0;
3535 struct nl_msg *msg;
3537 #ifdef ANDROID
3538 if (!drv->capa.sched_scan_supported)
3539 return android_pno_stop(bss);
3540 #endif /* ANDROID */
3542 msg = nlmsg_alloc();
3543 if (!msg)
3544 return -1;
3546 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
3548 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3550 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3551 msg = NULL;
3552 if (ret) {
3553 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
3554 "ret=%d (%s)", ret, strerror(-ret));
3555 goto nla_put_failure;
3556 }
3558 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
3560 nla_put_failure:
3561 nlmsg_free(msg);
3562 return ret;
3563 }
3566 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
3567 {
3568 const u8 *end, *pos;
3570 if (ies == NULL)
3571 return NULL;
3573 pos = ies;
3574 end = ies + ies_len;
3576 while (pos + 1 < end) {
3577 if (pos + 2 + pos[1] > end)
3578 break;
3579 if (pos[0] == ie)
3580 return pos;
3581 pos += 2 + pos[1];
3582 }
3584 return NULL;
3585 }
3588 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
3589 const u8 *ie, size_t ie_len)
3590 {
3591 const u8 *ssid;
3592 size_t i;
3594 if (drv->filter_ssids == NULL)
3595 return 0;
3597 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
3598 if (ssid == NULL)
3599 return 1;
3601 for (i = 0; i < drv->num_filter_ssids; i++) {
3602 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
3603 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
3604 0)
3605 return 0;
3606 }
3608 return 1;
3609 }
3612 static int bss_info_handler(struct nl_msg *msg, void *arg)
3613 {
3614 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3615 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3616 struct nlattr *bss[NL80211_BSS_MAX + 1];
3617 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
3618 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
3619 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
3620 [NL80211_BSS_TSF] = { .type = NLA_U64 },
3621 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
3622 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
3623 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
3624 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
3625 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
3626 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
3627 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
3628 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
3629 };
3630 struct nl80211_bss_info_arg *_arg = arg;
3631 struct wpa_scan_results *res = _arg->res;
3632 struct wpa_scan_res **tmp;
3633 struct wpa_scan_res *r;
3634 const u8 *ie, *beacon_ie;
3635 size_t ie_len, beacon_ie_len;
3636 u8 *pos;
3637 size_t i;
3639 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3640 genlmsg_attrlen(gnlh, 0), NULL);
3641 if (!tb[NL80211_ATTR_BSS])
3642 return NL_SKIP;
3643 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
3644 bss_policy))
3645 return NL_SKIP;
3646 if (bss[NL80211_BSS_STATUS]) {
3647 enum nl80211_bss_status status;
3648 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3649 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3650 bss[NL80211_BSS_FREQUENCY]) {
3651 _arg->assoc_freq =
3652 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3653 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
3654 _arg->assoc_freq);
3655 }
3656 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3657 bss[NL80211_BSS_BSSID]) {
3658 os_memcpy(_arg->assoc_bssid,
3659 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3660 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3661 MACSTR, MAC2STR(_arg->assoc_bssid));
3662 }
3663 }
3664 if (!res)
3665 return NL_SKIP;
3666 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3667 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3668 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3669 } else {
3670 ie = NULL;
3671 ie_len = 0;
3672 }
3673 if (bss[NL80211_BSS_BEACON_IES]) {
3674 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3675 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3676 } else {
3677 beacon_ie = NULL;
3678 beacon_ie_len = 0;
3679 }
3681 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3682 ie ? ie_len : beacon_ie_len))
3683 return NL_SKIP;
3685 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3686 if (r == NULL)
3687 return NL_SKIP;
3688 if (bss[NL80211_BSS_BSSID])
3689 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3690 ETH_ALEN);
3691 if (bss[NL80211_BSS_FREQUENCY])
3692 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3693 if (bss[NL80211_BSS_BEACON_INTERVAL])
3694 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3695 if (bss[NL80211_BSS_CAPABILITY])
3696 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3697 r->flags |= WPA_SCAN_NOISE_INVALID;
3698 if (bss[NL80211_BSS_SIGNAL_MBM]) {
3699 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3700 r->level /= 100; /* mBm to dBm */
3701 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3702 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3703 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3704 r->flags |= WPA_SCAN_QUAL_INVALID;
3705 } else
3706 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3707 if (bss[NL80211_BSS_TSF])
3708 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3709 if (bss[NL80211_BSS_SEEN_MS_AGO])
3710 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3711 r->ie_len = ie_len;
3712 pos = (u8 *) (r + 1);
3713 if (ie) {
3714 os_memcpy(pos, ie, ie_len);
3715 pos += ie_len;
3716 }
3717 r->beacon_ie_len = beacon_ie_len;
3718 if (beacon_ie)
3719 os_memcpy(pos, beacon_ie, beacon_ie_len);
3721 if (bss[NL80211_BSS_STATUS]) {
3722 enum nl80211_bss_status status;
3723 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3724 switch (status) {
3725 case NL80211_BSS_STATUS_AUTHENTICATED:
3726 r->flags |= WPA_SCAN_AUTHENTICATED;
3727 break;
3728 case NL80211_BSS_STATUS_ASSOCIATED:
3729 r->flags |= WPA_SCAN_ASSOCIATED;
3730 break;
3731 default:
3732 break;
3733 }
3734 }
3736 /*
3737 * cfg80211 maintains separate BSS table entries for APs if the same
3738 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3739 * not use frequency as a separate key in the BSS table, so filter out
3740 * duplicated entries. Prefer associated BSS entry in such a case in
3741 * order to get the correct frequency into the BSS table.
3742 */
3743 for (i = 0; i < res->num; i++) {
3744 const u8 *s1, *s2;
3745 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3746 continue;
3748 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3749 res->res[i]->ie_len, WLAN_EID_SSID);
3750 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3751 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3752 os_memcmp(s1, s2, 2 + s1[1]) != 0)
3753 continue;
3755 /* Same BSSID,SSID was already included in scan results */
3756 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3757 "for " MACSTR, MAC2STR(r->bssid));
3759 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3760 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3761 os_free(res->res[i]);
3762 res->res[i] = r;
3763 } else
3764 os_free(r);
3765 return NL_SKIP;
3766 }
3768 tmp = os_realloc(res->res,
3769 (res->num + 1) * sizeof(struct wpa_scan_res *));
3770 if (tmp == NULL) {
3771 os_free(r);
3772 return NL_SKIP;
3773 }
3774 tmp[res->num++] = r;
3775 res->res = tmp;
3777 return NL_SKIP;
3778 }
3781 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3782 const u8 *addr)
3783 {
3784 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3785 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3786 "mismatch (" MACSTR ")", MAC2STR(addr));
3787 wpa_driver_nl80211_mlme(drv, addr,
3788 NL80211_CMD_DEAUTHENTICATE,
3789 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3790 }
3791 }
3794 static void wpa_driver_nl80211_check_bss_status(
3795 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3796 {
3797 size_t i;
3799 for (i = 0; i < res->num; i++) {
3800 struct wpa_scan_res *r = res->res[i];
3801 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3802 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3803 "indicates BSS status with " MACSTR
3804 " as authenticated",
3805 MAC2STR(r->bssid));
3806 if (is_sta_interface(drv->nlmode) &&
3807 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3808 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3809 0) {
3810 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3811 " in local state (auth=" MACSTR
3812 " assoc=" MACSTR ")",
3813 MAC2STR(drv->auth_bssid),
3814 MAC2STR(drv->bssid));
3815 clear_state_mismatch(drv, r->bssid);
3816 }
3817 }
3819 if (r->flags & WPA_SCAN_ASSOCIATED) {
3820 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3821 "indicate BSS status with " MACSTR
3822 " as associated",
3823 MAC2STR(r->bssid));
3824 if (is_sta_interface(drv->nlmode) &&
3825 !drv->associated) {
3826 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3827 "(not associated) does not match "
3828 "with BSS state");
3829 clear_state_mismatch(drv, r->bssid);
3830 } else if (is_sta_interface(drv->nlmode) &&
3831 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3832 0) {
3833 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3834 "(associated with " MACSTR ") does "
3835 "not match with BSS state",
3836 MAC2STR(drv->bssid));
3837 clear_state_mismatch(drv, r->bssid);
3838 clear_state_mismatch(drv, drv->bssid);
3839 }
3840 }
3841 }
3842 }
3845 static struct wpa_scan_results *
3846 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3847 {
3848 struct nl_msg *msg;
3849 struct wpa_scan_results *res;
3850 int ret;
3851 struct nl80211_bss_info_arg arg;
3853 res = os_zalloc(sizeof(*res));
3854 if (res == NULL)
3855 return NULL;
3856 msg = nlmsg_alloc();
3857 if (!msg)
3858 goto nla_put_failure;
3860 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3861 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3863 arg.drv = drv;
3864 arg.res = res;
3865 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3866 msg = NULL;
3867 if (ret == 0) {
3868 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3869 "BSSes)", (unsigned long) res->num);
3870 nl80211_get_noise_for_scan_results(drv, res);
3871 return res;
3872 }
3873 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3874 "(%s)", ret, strerror(-ret));
3875 nla_put_failure:
3876 nlmsg_free(msg);
3877 wpa_scan_results_free(res);
3878 return NULL;
3879 }
3882 /**
3883 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3884 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3885 * Returns: Scan results on success, -1 on failure
3886 */
3887 static struct wpa_scan_results *
3888 wpa_driver_nl80211_get_scan_results(void *priv)
3889 {
3890 struct i802_bss *bss = priv;
3891 struct wpa_driver_nl80211_data *drv = bss->drv;
3892 struct wpa_scan_results *res;
3894 res = nl80211_get_scan_results(drv);
3895 if (res)
3896 wpa_driver_nl80211_check_bss_status(drv, res);
3897 return res;
3898 }
3901 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3902 {
3903 struct wpa_scan_results *res;
3904 size_t i;
3906 res = nl80211_get_scan_results(drv);
3907 if (res == NULL) {
3908 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3909 return;
3910 }
3912 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3913 for (i = 0; i < res->num; i++) {
3914 struct wpa_scan_res *r = res->res[i];
3915 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3916 (int) i, (int) res->num, MAC2STR(r->bssid),
3917 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3918 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3919 }
3921 wpa_scan_results_free(res);
3922 }
3925 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
3926 enum wpa_alg alg, const u8 *addr,
3927 int key_idx, int set_tx,
3928 const u8 *seq, size_t seq_len,
3929 const u8 *key, size_t key_len)
3930 {
3931 struct i802_bss *bss = priv;
3932 struct wpa_driver_nl80211_data *drv = bss->drv;
3933 int ifindex = if_nametoindex(ifname);
3934 struct nl_msg *msg;
3935 int ret;
3937 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
3938 "set_tx=%d seq_len=%lu key_len=%lu",
3939 __func__, ifindex, alg, addr, key_idx, set_tx,
3940 (unsigned long) seq_len, (unsigned long) key_len);
3941 #ifdef CONFIG_TDLS
3942 if (key_idx == -1)
3943 key_idx = 0;
3944 #endif /* CONFIG_TDLS */
3946 msg = nlmsg_alloc();
3947 if (!msg)
3948 return -ENOMEM;
3950 if (alg == WPA_ALG_NONE) {
3951 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3952 } else {
3953 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3954 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3955 switch (alg) {
3956 case WPA_ALG_WEP:
3957 if (key_len == 5)
3958 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3959 WLAN_CIPHER_SUITE_WEP40);
3960 else
3961 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3962 WLAN_CIPHER_SUITE_WEP104);
3963 break;
3964 case WPA_ALG_TKIP:
3965 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3966 WLAN_CIPHER_SUITE_TKIP);
3967 break;
3968 case WPA_ALG_CCMP:
3969 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3970 WLAN_CIPHER_SUITE_CCMP);
3971 break;
3972 case WPA_ALG_IGTK:
3973 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3974 WLAN_CIPHER_SUITE_AES_CMAC);
3975 break;
3976 default:
3977 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3978 "algorithm %d", __func__, alg);
3979 nlmsg_free(msg);
3980 return -1;
3981 }
3982 }
3984 if (seq && seq_len)
3985 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3987 if (addr && !is_broadcast_ether_addr(addr)) {
3988 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
3989 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3991 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3992 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
3993 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3994 NL80211_KEYTYPE_GROUP);
3995 }
3996 } else if (addr && is_broadcast_ether_addr(addr)) {
3997 struct nl_msg *types;
3998 int err;
3999 wpa_printf(MSG_DEBUG, " broadcast key");
4000 types = nlmsg_alloc();
4001 if (!types)
4002 goto nla_put_failure;
4003 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4004 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4005 types);
4006 nlmsg_free(types);
4007 if (err)
4008 goto nla_put_failure;
4009 }
4010 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4011 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4013 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4014 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4015 ret = 0;
4016 if (ret)
4017 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4018 ret, strerror(-ret));
4020 /*
4021 * If we failed or don't need to set the default TX key (below),
4022 * we're done here.
4023 */
4024 if (ret || !set_tx || alg == WPA_ALG_NONE)
4025 return ret;
4026 if (is_ap_interface(drv->nlmode) && addr &&
4027 !is_broadcast_ether_addr(addr))
4028 return ret;
4030 msg = nlmsg_alloc();
4031 if (!msg)
4032 return -ENOMEM;
4034 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4035 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4036 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4037 if (alg == WPA_ALG_IGTK)
4038 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4039 else
4040 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4041 if (addr && is_broadcast_ether_addr(addr)) {
4042 struct nl_msg *types;
4043 int err;
4044 types = nlmsg_alloc();
4045 if (!types)
4046 goto nla_put_failure;
4047 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4048 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4049 types);
4050 nlmsg_free(types);
4051 if (err)
4052 goto nla_put_failure;
4053 } else if (addr) {
4054 struct nl_msg *types;
4055 int err;
4056 types = nlmsg_alloc();
4057 if (!types)
4058 goto nla_put_failure;
4059 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4060 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4061 types);
4062 nlmsg_free(types);
4063 if (err)
4064 goto nla_put_failure;
4065 }
4067 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4068 if (ret == -ENOENT)
4069 ret = 0;
4070 if (ret)
4071 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4072 "err=%d %s)", ret, strerror(-ret));
4073 return ret;
4075 nla_put_failure:
4076 return -ENOBUFS;
4077 }
4080 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4081 int key_idx, int defkey,
4082 const u8 *seq, size_t seq_len,
4083 const u8 *key, size_t key_len)
4084 {
4085 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4086 if (!key_attr)
4087 return -1;
4089 if (defkey && alg == WPA_ALG_IGTK)
4090 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4091 else if (defkey)
4092 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4094 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4096 switch (alg) {
4097 case WPA_ALG_WEP:
4098 if (key_len == 5)
4099 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4100 WLAN_CIPHER_SUITE_WEP40);
4101 else
4102 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4103 WLAN_CIPHER_SUITE_WEP104);
4104 break;
4105 case WPA_ALG_TKIP:
4106 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4107 break;
4108 case WPA_ALG_CCMP:
4109 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4110 break;
4111 case WPA_ALG_IGTK:
4112 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4113 WLAN_CIPHER_SUITE_AES_CMAC);
4114 break;
4115 default:
4116 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4117 "algorithm %d", __func__, alg);
4118 return -1;
4119 }
4121 if (seq && seq_len)
4122 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4124 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4126 nla_nest_end(msg, key_attr);
4128 return 0;
4129 nla_put_failure:
4130 return -1;
4131 }
4134 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4135 struct nl_msg *msg)
4136 {
4137 int i, privacy = 0;
4138 struct nlattr *nl_keys, *nl_key;
4140 for (i = 0; i < 4; i++) {
4141 if (!params->wep_key[i])
4142 continue;
4143 privacy = 1;
4144 break;
4145 }
4146 if (params->wps == WPS_MODE_PRIVACY)
4147 privacy = 1;
4148 if (params->pairwise_suite &&
4149 params->pairwise_suite != WPA_CIPHER_NONE)
4150 privacy = 1;
4152 if (!privacy)
4153 return 0;
4155 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4157 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4158 if (!nl_keys)
4159 goto nla_put_failure;
4161 for (i = 0; i < 4; i++) {
4162 if (!params->wep_key[i])
4163 continue;
4165 nl_key = nla_nest_start(msg, i);
4166 if (!nl_key)
4167 goto nla_put_failure;
4169 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4170 params->wep_key[i]);
4171 if (params->wep_key_len[i] == 5)
4172 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4173 WLAN_CIPHER_SUITE_WEP40);
4174 else
4175 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4176 WLAN_CIPHER_SUITE_WEP104);
4178 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4180 if (i == params->wep_tx_keyidx)
4181 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4183 nla_nest_end(msg, nl_key);
4184 }
4185 nla_nest_end(msg, nl_keys);
4187 return 0;
4189 nla_put_failure:
4190 return -ENOBUFS;
4191 }
4194 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4195 const u8 *addr, int cmd, u16 reason_code,
4196 int local_state_change)
4197 {
4198 int ret = -1;
4199 struct nl_msg *msg;
4201 msg = nlmsg_alloc();
4202 if (!msg)
4203 return -1;
4205 nl80211_cmd(drv, msg, 0, cmd);
4207 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4208 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4209 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4210 if (local_state_change)
4211 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4213 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4214 msg = NULL;
4215 if (ret) {
4216 wpa_dbg(drv->ctx, MSG_DEBUG,
4217 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4218 reason_code, ret, strerror(-ret));
4219 goto nla_put_failure;
4220 }
4221 ret = 0;
4223 nla_put_failure:
4224 nlmsg_free(msg);
4225 return ret;
4226 }
4229 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4230 const u8 *addr, int reason_code)
4231 {
4232 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4233 __func__, MAC2STR(addr), reason_code);
4234 drv->associated = 0;
4235 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
4236 reason_code, 0);
4237 }
4240 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
4241 int reason_code)
4242 {
4243 struct i802_bss *bss = priv;
4244 struct wpa_driver_nl80211_data *drv = bss->drv;
4245 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4246 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4247 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4248 __func__, MAC2STR(addr), reason_code);
4249 drv->associated = 0;
4250 if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4251 return nl80211_leave_ibss(drv);
4252 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4253 reason_code, 0);
4254 }
4257 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
4258 int reason_code)
4259 {
4260 struct i802_bss *bss = priv;
4261 struct wpa_driver_nl80211_data *drv = bss->drv;
4262 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4263 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4264 wpa_printf(MSG_DEBUG, "%s", __func__);
4265 drv->associated = 0;
4266 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
4267 reason_code, 0);
4268 }
4271 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
4272 struct wpa_driver_auth_params *params)
4273 {
4274 int i;
4276 drv->auth_freq = params->freq;
4277 drv->auth_alg = params->auth_alg;
4278 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
4279 drv->auth_local_state_change = params->local_state_change;
4280 drv->auth_p2p = params->p2p;
4282 if (params->bssid)
4283 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
4284 else
4285 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
4287 if (params->ssid) {
4288 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
4289 drv->auth_ssid_len = params->ssid_len;
4290 } else
4291 drv->auth_ssid_len = 0;
4294 os_free(drv->auth_ie);
4295 drv->auth_ie = NULL;
4296 drv->auth_ie_len = 0;
4297 if (params->ie) {
4298 drv->auth_ie = os_malloc(params->ie_len);
4299 if (drv->auth_ie) {
4300 os_memcpy(drv->auth_ie, params->ie, params->ie_len);
4301 drv->auth_ie_len = params->ie_len;
4302 }
4303 }
4305 for (i = 0; i < 4; i++) {
4306 if (params->wep_key[i] && params->wep_key_len[i] &&
4307 params->wep_key_len[i] <= 16) {
4308 os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
4309 params->wep_key_len[i]);
4310 drv->auth_wep_key_len[i] = params->wep_key_len[i];
4311 } else
4312 drv->auth_wep_key_len[i] = 0;
4313 }
4314 }
4317 static int wpa_driver_nl80211_authenticate(
4318 void *priv, struct wpa_driver_auth_params *params)
4319 {
4320 struct i802_bss *bss = priv;
4321 struct wpa_driver_nl80211_data *drv = bss->drv;
4322 int ret = -1, i;
4323 struct nl_msg *msg;
4324 enum nl80211_auth_type type;
4325 enum nl80211_iftype nlmode;
4326 int count = 0;
4327 int is_retry;
4329 is_retry = drv->retry_auth;
4330 drv->retry_auth = 0;
4332 drv->associated = 0;
4333 os_memset(drv->auth_bssid, 0, ETH_ALEN);
4334 /* FIX: IBSS mode */
4335 nlmode = params->p2p ?
4336 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4337 if (drv->nlmode != nlmode &&
4338 wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4339 return -1;
4341 retry:
4342 msg = nlmsg_alloc();
4343 if (!msg)
4344 return -1;
4346 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
4347 drv->ifindex);
4349 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
4351 for (i = 0; i < 4; i++) {
4352 if (!params->wep_key[i])
4353 continue;
4354 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
4355 NULL, i,
4356 i == params->wep_tx_keyidx, NULL, 0,
4357 params->wep_key[i],
4358 params->wep_key_len[i]);
4359 if (params->wep_tx_keyidx != i)
4360 continue;
4361 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
4362 params->wep_key[i], params->wep_key_len[i])) {
4363 nlmsg_free(msg);
4364 return -1;
4365 }
4366 }
4368 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4369 if (params->bssid) {
4370 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4371 MAC2STR(params->bssid));
4372 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4373 }
4374 if (params->freq) {
4375 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4376 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4377 }
4378 if (params->ssid) {
4379 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4380 params->ssid, params->ssid_len);
4381 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4382 params->ssid);
4383 }
4384 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
4385 if (params->ie)
4386 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
4387 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4388 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4389 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4390 type = NL80211_AUTHTYPE_SHARED_KEY;
4391 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4392 type = NL80211_AUTHTYPE_NETWORK_EAP;
4393 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4394 type = NL80211_AUTHTYPE_FT;
4395 else
4396 goto nla_put_failure;
4397 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4398 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4399 if (params->local_state_change) {
4400 wpa_printf(MSG_DEBUG, " * Local state change only");
4401 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4402 }
4404 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4405 msg = NULL;
4406 if (ret) {
4407 wpa_dbg(drv->ctx, MSG_DEBUG,
4408 "nl80211: MLME command failed (auth): ret=%d (%s)",
4409 ret, strerror(-ret));
4410 count++;
4411 if (ret == -EALREADY && count == 1 && params->bssid &&
4412 !params->local_state_change) {
4413 /*
4414 * mac80211 does not currently accept new
4415 * authentication if we are already authenticated. As a
4416 * workaround, force deauthentication and try again.
4417 */
4418 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
4419 "after forced deauthentication");
4420 wpa_driver_nl80211_deauthenticate(
4421 bss, params->bssid,
4422 WLAN_REASON_PREV_AUTH_NOT_VALID);
4423 nlmsg_free(msg);
4424 goto retry;
4425 }
4427 if (ret == -ENOENT && params->freq && !is_retry) {
4428 /*
4429 * cfg80211 has likely expired the BSS entry even
4430 * though it was previously available in our internal
4431 * BSS table. To recover quickly, start a single
4432 * channel scan on the specified channel.
4433 */
4434 struct wpa_driver_scan_params scan;
4435 int freqs[2];
4437 os_memset(&scan, 0, sizeof(scan));
4438 scan.num_ssids = 1;
4439 if (params->ssid) {
4440 scan.ssids[0].ssid = params->ssid;
4441 scan.ssids[0].ssid_len = params->ssid_len;
4442 }
4443 freqs[0] = params->freq;
4444 freqs[1] = 0;
4445 scan.freqs = freqs;
4446 wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
4447 "channel scan to refresh cfg80211 BSS "
4448 "entry");
4449 ret = wpa_driver_nl80211_scan(bss, &scan);
4450 if (ret == 0) {
4451 nl80211_copy_auth_params(drv, params);
4452 drv->scan_for_auth = 1;
4453 }
4454 } else if (is_retry) {
4455 /*
4456 * Need to indicate this with an event since the return
4457 * value from the retry is not delivered to core code.
4458 */
4459 union wpa_event_data event;
4460 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
4461 "failed");
4462 os_memset(&event, 0, sizeof(event));
4463 os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
4464 ETH_ALEN);
4465 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
4466 &event);
4467 }
4469 goto nla_put_failure;
4470 }
4471 ret = 0;
4472 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
4473 "successfully");
4475 nla_put_failure:
4476 nlmsg_free(msg);
4477 return ret;
4478 }
4481 static int wpa_driver_nl80211_authenticate_retry(
4482 struct wpa_driver_nl80211_data *drv)
4483 {
4484 struct wpa_driver_auth_params params;
4485 struct i802_bss *bss = &drv->first_bss;
4486 int i;
4488 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
4490 os_memset(¶ms, 0, sizeof(params));
4491 params.freq = drv->auth_freq;
4492 params.auth_alg = drv->auth_alg;
4493 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
4494 params.local_state_change = drv->auth_local_state_change;
4495 params.p2p = drv->auth_p2p;
4497 if (!is_zero_ether_addr(drv->auth_bssid_))
4498 params.bssid = drv->auth_bssid_;
4500 if (drv->auth_ssid_len) {
4501 params.ssid = drv->auth_ssid;
4502 params.ssid_len = drv->auth_ssid_len;
4503 }
4505 params.ie = drv->auth_ie;
4506 params.ie_len = drv->auth_ie_len;
4508 for (i = 0; i < 4; i++) {
4509 if (drv->auth_wep_key_len[i]) {
4510 params.wep_key[i] = drv->auth_wep_key[i];
4511 params.wep_key_len[i] = drv->auth_wep_key_len[i];
4512 }
4513 }
4515 drv->retry_auth = 1;
4516 return wpa_driver_nl80211_authenticate(bss, ¶ms);
4517 }
4520 struct phy_info_arg {
4521 u16 *num_modes;
4522 struct hostapd_hw_modes *modes;
4523 };
4525 static int phy_info_handler(struct nl_msg *msg, void *arg)
4526 {
4527 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4528 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4529 struct phy_info_arg *phy_info = arg;
4531 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
4533 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
4534 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4535 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
4536 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
4537 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
4538 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
4539 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
4540 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
4541 };
4543 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
4544 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
4545 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
4546 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
4547 };
4549 struct nlattr *nl_band;
4550 struct nlattr *nl_freq;
4551 struct nlattr *nl_rate;
4552 int rem_band, rem_freq, rem_rate;
4553 struct hostapd_hw_modes *mode;
4554 int idx, mode_is_set;
4556 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4557 genlmsg_attrlen(gnlh, 0), NULL);
4559 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
4560 return NL_SKIP;
4562 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
4563 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
4564 if (!mode)
4565 return NL_SKIP;
4566 phy_info->modes = mode;
4568 mode_is_set = 0;
4570 mode = &phy_info->modes[*(phy_info->num_modes)];
4571 memset(mode, 0, sizeof(*mode));
4572 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
4573 *(phy_info->num_modes) += 1;
4575 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
4576 nla_len(nl_band), NULL);
4578 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
4579 mode->ht_capab = nla_get_u16(
4580 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
4581 }
4583 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
4584 mode->a_mpdu_params |= nla_get_u8(
4585 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
4586 0x03;
4587 }
4589 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
4590 mode->a_mpdu_params |= nla_get_u8(
4591 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
4592 2;
4593 }
4595 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
4596 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
4597 u8 *mcs;
4598 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
4599 os_memcpy(mode->mcs_set, mcs, 16);
4600 }
4602 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4603 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4604 nla_len(nl_freq), freq_policy);
4605 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4606 continue;
4607 mode->num_channels++;
4608 }
4610 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
4611 if (!mode->channels)
4612 return NL_SKIP;
4614 idx = 0;
4616 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4617 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4618 nla_len(nl_freq), freq_policy);
4619 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4620 continue;
4622 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
4623 mode->channels[idx].flag = 0;
4625 if (!mode_is_set) {
4626 /* crude heuristic */
4627 if (mode->channels[idx].freq < 4000)
4628 mode->mode = HOSTAPD_MODE_IEEE80211B;
4629 else
4630 mode->mode = HOSTAPD_MODE_IEEE80211A;
4631 mode_is_set = 1;
4632 }
4634 /* crude heuristic */
4635 if (mode->channels[idx].freq < 4000)
4636 if (mode->channels[idx].freq == 2484)
4637 mode->channels[idx].chan = 14;
4638 else
4639 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
4640 else
4641 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
4643 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4644 mode->channels[idx].flag |=
4645 HOSTAPD_CHAN_DISABLED;
4646 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
4647 mode->channels[idx].flag |=
4648 HOSTAPD_CHAN_PASSIVE_SCAN;
4649 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
4650 mode->channels[idx].flag |=
4651 HOSTAPD_CHAN_NO_IBSS;
4652 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
4653 mode->channels[idx].flag |=
4654 HOSTAPD_CHAN_RADAR;
4656 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
4657 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4658 mode->channels[idx].max_tx_power =
4659 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
4661 idx++;
4662 }
4664 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4665 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4666 nla_len(nl_rate), rate_policy);
4667 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4668 continue;
4669 mode->num_rates++;
4670 }
4672 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
4673 if (!mode->rates)
4674 return NL_SKIP;
4676 idx = 0;
4678 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4679 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4680 nla_len(nl_rate), rate_policy);
4681 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4682 continue;
4683 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
4685 /* crude heuristic */
4686 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
4687 mode->rates[idx] > 200)
4688 mode->mode = HOSTAPD_MODE_IEEE80211G;
4690 idx++;
4691 }
4692 }
4694 return NL_SKIP;
4695 }
4697 static struct hostapd_hw_modes *
4698 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
4699 {
4700 u16 m;
4701 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
4702 int i, mode11g_idx = -1;
4704 /* If only 802.11g mode is included, use it to construct matching
4705 * 802.11b mode data. */
4707 for (m = 0; m < *num_modes; m++) {
4708 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
4709 return modes; /* 802.11b already included */
4710 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
4711 mode11g_idx = m;
4712 }
4714 if (mode11g_idx < 0)
4715 return modes; /* 2.4 GHz band not supported at all */
4717 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
4718 if (nmodes == NULL)
4719 return modes; /* Could not add 802.11b mode */
4721 mode = &nmodes[*num_modes];
4722 os_memset(mode, 0, sizeof(*mode));
4723 (*num_modes)++;
4724 modes = nmodes;
4726 mode->mode = HOSTAPD_MODE_IEEE80211B;
4728 mode11g = &modes[mode11g_idx];
4729 mode->num_channels = mode11g->num_channels;
4730 mode->channels = os_malloc(mode11g->num_channels *
4731 sizeof(struct hostapd_channel_data));
4732 if (mode->channels == NULL) {
4733 (*num_modes)--;
4734 return modes; /* Could not add 802.11b mode */
4735 }
4736 os_memcpy(mode->channels, mode11g->channels,
4737 mode11g->num_channels * sizeof(struct hostapd_channel_data));
4739 mode->num_rates = 0;
4740 mode->rates = os_malloc(4 * sizeof(int));
4741 if (mode->rates == NULL) {
4742 os_free(mode->channels);
4743 (*num_modes)--;
4744 return modes; /* Could not add 802.11b mode */
4745 }
4747 for (i = 0; i < mode11g->num_rates; i++) {
4748 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
4749 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
4750 continue;
4751 mode->rates[mode->num_rates] = mode11g->rates[i];
4752 mode->num_rates++;
4753 if (mode->num_rates == 4)
4754 break;
4755 }
4757 if (mode->num_rates == 0) {
4758 os_free(mode->channels);
4759 os_free(mode->rates);
4760 (*num_modes)--;
4761 return modes; /* No 802.11b rates */
4762 }
4764 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
4765 "information");
4767 return modes;
4768 }
4771 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
4772 int end)
4773 {
4774 int c;
4776 for (c = 0; c < mode->num_channels; c++) {
4777 struct hostapd_channel_data *chan = &mode->channels[c];
4778 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
4779 chan->flag |= HOSTAPD_CHAN_HT40;
4780 }
4781 }
4784 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
4785 int end)
4786 {
4787 int c;
4789 for (c = 0; c < mode->num_channels; c++) {
4790 struct hostapd_channel_data *chan = &mode->channels[c];
4791 if (!(chan->flag & HOSTAPD_CHAN_HT40))
4792 continue;
4793 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
4794 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
4795 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
4796 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
4797 }
4798 }
4801 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
4802 struct phy_info_arg *results)
4803 {
4804 u32 start, end, max_bw;
4805 u16 m;
4807 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4808 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4809 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4810 return;
4812 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4813 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4814 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4816 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
4817 start, end, max_bw);
4818 if (max_bw < 40)
4819 return;
4821 for (m = 0; m < *results->num_modes; m++) {
4822 if (!(results->modes[m].ht_capab &
4823 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4824 continue;
4825 nl80211_set_ht40_mode(&results->modes[m], start, end);
4826 }
4827 }
4830 static void nl80211_reg_rule_sec(struct nlattr *tb[],
4831 struct phy_info_arg *results)
4832 {
4833 u32 start, end, max_bw;
4834 u16 m;
4836 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4837 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4838 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4839 return;
4841 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4842 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4843 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4845 if (max_bw < 20)
4846 return;
4848 for (m = 0; m < *results->num_modes; m++) {
4849 if (!(results->modes[m].ht_capab &
4850 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4851 continue;
4852 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
4853 }
4854 }
4857 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
4858 {
4859 struct phy_info_arg *results = arg;
4860 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4861 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4862 struct nlattr *nl_rule;
4863 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
4864 int rem_rule;
4865 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4866 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4867 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4868 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4869 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4870 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4871 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4872 };
4874 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4875 genlmsg_attrlen(gnlh, 0), NULL);
4876 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
4877 !tb_msg[NL80211_ATTR_REG_RULES]) {
4878 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
4879 "available");
4880 return NL_SKIP;
4881 }
4883 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
4884 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
4886 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4887 {
4888 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4889 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4890 nl80211_reg_rule_ht40(tb_rule, results);
4891 }
4893 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4894 {
4895 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4896 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4897 nl80211_reg_rule_sec(tb_rule, results);
4898 }
4900 return NL_SKIP;
4901 }
4904 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
4905 struct phy_info_arg *results)
4906 {
4907 struct nl_msg *msg;
4909 msg = nlmsg_alloc();
4910 if (!msg)
4911 return -ENOMEM;
4913 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
4914 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
4915 }
4918 static struct hostapd_hw_modes *
4919 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
4920 {
4921 struct i802_bss *bss = priv;
4922 struct wpa_driver_nl80211_data *drv = bss->drv;
4923 struct nl_msg *msg;
4924 struct phy_info_arg result = {
4925 .num_modes = num_modes,
4926 .modes = NULL,
4927 };
4929 *num_modes = 0;
4930 *flags = 0;
4932 msg = nlmsg_alloc();
4933 if (!msg)
4934 return NULL;
4936 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
4938 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4940 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
4941 nl80211_set_ht40_flags(drv, &result);
4942 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
4943 }
4944 nla_put_failure:
4945 return NULL;
4946 }
4949 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
4950 const void *data, size_t len,
4951 int encrypt, int noack)
4952 {
4953 __u8 rtap_hdr[] = {
4954 0x00, 0x00, /* radiotap version */
4955 0x0e, 0x00, /* radiotap length */
4956 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
4957 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
4958 0x00, /* padding */
4959 0x00, 0x00, /* RX and TX flags to indicate that */
4960 0x00, 0x00, /* this is the injected frame directly */
4961 };
4962 struct iovec iov[2] = {
4963 {
4964 .iov_base = &rtap_hdr,
4965 .iov_len = sizeof(rtap_hdr),
4966 },
4967 {
4968 .iov_base = (void *) data,
4969 .iov_len = len,
4970 }
4971 };
4972 struct msghdr msg = {
4973 .msg_name = NULL,
4974 .msg_namelen = 0,
4975 .msg_iov = iov,
4976 .msg_iovlen = 2,
4977 .msg_control = NULL,
4978 .msg_controllen = 0,
4979 .msg_flags = 0,
4980 };
4981 int res;
4982 u16 txflags = 0;
4984 if (encrypt)
4985 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
4987 if (drv->monitor_sock < 0) {
4988 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
4989 "for %s", __func__);
4990 return -1;
4991 }
4993 if (noack)
4994 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
4995 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
4997 res = sendmsg(drv->monitor_sock, &msg, 0);
4998 if (res < 0) {
4999 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5000 return -1;
5001 }
5002 return 0;
5003 }
5006 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5007 const void *data, size_t len,
5008 int encrypt, int noack)
5009 {
5010 struct wpa_driver_nl80211_data *drv = bss->drv;
5011 u64 cookie;
5013 if (drv->use_monitor)
5014 return wpa_driver_nl80211_send_mntr(drv, data, len,
5015 encrypt, noack);
5017 return nl80211_send_frame_cmd(bss, bss->freq, 0, data, len,
5018 &cookie, 0, noack, 0);
5019 }
5022 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
5023 size_t data_len, int noack)
5024 {
5025 struct i802_bss *bss = priv;
5026 struct wpa_driver_nl80211_data *drv = bss->drv;
5027 struct ieee80211_mgmt *mgmt;
5028 int encrypt = 1;
5029 u16 fc;
5031 mgmt = (struct ieee80211_mgmt *) data;
5032 fc = le_to_host16(mgmt->frame_control);
5034 if (is_sta_interface(drv->nlmode) &&
5035 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5036 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5037 /*
5038 * The use of last_mgmt_freq is a bit of a hack,
5039 * but it works due to the single-threaded nature
5040 * of wpa_supplicant.
5041 */
5042 return nl80211_send_frame_cmd(bss, drv->last_mgmt_freq, 0,
5043 data, data_len, NULL, 1, noack,
5044 1);
5045 }
5047 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5048 return nl80211_send_frame_cmd(bss, bss->freq, 0,
5049 data, data_len, NULL,
5050 0, noack, 0);
5051 }
5053 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5054 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5055 /*
5056 * Only one of the authentication frame types is encrypted.
5057 * In order for static WEP encryption to work properly (i.e.,
5058 * to not encrypt the frame), we need to tell mac80211 about
5059 * the frames that must not be encrypted.
5060 */
5061 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5062 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5063 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5064 encrypt = 0;
5065 }
5067 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5068 noack);
5069 }
5072 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5073 int slot, int ht_opmode, int ap_isolate,
5074 int *basic_rates)
5075 {
5076 struct wpa_driver_nl80211_data *drv = bss->drv;
5077 struct nl_msg *msg;
5079 msg = nlmsg_alloc();
5080 if (!msg)
5081 return -ENOMEM;
5083 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5085 if (cts >= 0)
5086 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5087 if (preamble >= 0)
5088 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5089 if (slot >= 0)
5090 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5091 if (ht_opmode >= 0)
5092 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5093 if (ap_isolate >= 0)
5094 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5096 if (basic_rates) {
5097 u8 rates[NL80211_MAX_SUPP_RATES];
5098 u8 rates_len = 0;
5099 int i;
5101 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5102 i++)
5103 rates[rates_len++] = basic_rates[i] / 5;
5105 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5106 }
5108 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5110 return send_and_recv_msgs(drv, msg, NULL, NULL);
5111 nla_put_failure:
5112 return -ENOBUFS;
5113 }
5116 static int wpa_driver_nl80211_set_ap(void *priv,
5117 struct wpa_driver_ap_params *params)
5118 {
5119 struct i802_bss *bss = priv;
5120 struct wpa_driver_nl80211_data *drv = bss->drv;
5121 struct nl_msg *msg;
5122 u8 cmd = NL80211_CMD_NEW_BEACON;
5123 int ret;
5124 int beacon_set;
5125 int ifindex = if_nametoindex(bss->ifname);
5126 int num_suites;
5127 u32 suites[10];
5128 u32 ver;
5130 beacon_set = bss->beacon_set;
5132 msg = nlmsg_alloc();
5133 if (!msg)
5134 return -ENOMEM;
5136 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
5137 beacon_set);
5138 if (beacon_set)
5139 cmd = NL80211_CMD_SET_BEACON;
5141 nl80211_cmd(drv, msg, 0, cmd);
5142 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
5143 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
5144 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5145 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
5146 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
5147 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5148 params->ssid);
5149 switch (params->hide_ssid) {
5150 case NO_SSID_HIDING:
5151 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5152 NL80211_HIDDEN_SSID_NOT_IN_USE);
5153 break;
5154 case HIDDEN_SSID_ZERO_LEN:
5155 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5156 NL80211_HIDDEN_SSID_ZERO_LEN);
5157 break;
5158 case HIDDEN_SSID_ZERO_CONTENTS:
5159 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5160 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
5161 break;
5162 }
5163 if (params->privacy)
5164 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5165 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
5166 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
5167 /* Leave out the attribute */
5168 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
5169 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5170 NL80211_AUTHTYPE_SHARED_KEY);
5171 else
5172 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5173 NL80211_AUTHTYPE_OPEN_SYSTEM);
5175 ver = 0;
5176 if (params->wpa_version & WPA_PROTO_WPA)
5177 ver |= NL80211_WPA_VERSION_1;
5178 if (params->wpa_version & WPA_PROTO_RSN)
5179 ver |= NL80211_WPA_VERSION_2;
5180 if (ver)
5181 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5183 num_suites = 0;
5184 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
5185 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
5186 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
5187 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
5188 if (num_suites) {
5189 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
5190 num_suites * sizeof(u32), suites);
5191 }
5193 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
5194 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
5195 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
5197 num_suites = 0;
5198 if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
5199 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5200 if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
5201 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5202 if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
5203 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5204 if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
5205 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5206 if (num_suites) {
5207 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5208 num_suites * sizeof(u32), suites);
5209 }
5211 switch (params->group_cipher) {
5212 case WPA_CIPHER_CCMP:
5213 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5214 WLAN_CIPHER_SUITE_CCMP);
5215 break;
5216 case WPA_CIPHER_TKIP:
5217 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5218 WLAN_CIPHER_SUITE_TKIP);
5219 break;
5220 case WPA_CIPHER_WEP104:
5221 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5222 WLAN_CIPHER_SUITE_WEP104);
5223 break;
5224 case WPA_CIPHER_WEP40:
5225 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5226 WLAN_CIPHER_SUITE_WEP40);
5227 break;
5228 }
5230 if (params->beacon_ies) {
5231 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
5232 wpabuf_head(params->beacon_ies));
5233 }
5234 if (params->proberesp_ies) {
5235 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
5236 wpabuf_len(params->proberesp_ies),
5237 wpabuf_head(params->proberesp_ies));
5238 }
5239 if (params->assocresp_ies) {
5240 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
5241 wpabuf_len(params->assocresp_ies),
5242 wpabuf_head(params->assocresp_ies));
5243 }
5245 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5246 if (ret) {
5247 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
5248 ret, strerror(-ret));
5249 } else {
5250 bss->beacon_set = 1;
5251 nl80211_set_bss(bss, params->cts_protect, params->preamble,
5252 params->short_slot_time, params->ht_opmode,
5253 params->isolate, params->basic_rates);
5254 }
5255 return ret;
5256 nla_put_failure:
5257 return -ENOBUFS;
5258 }
5261 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
5262 int freq, int ht_enabled,
5263 int sec_channel_offset)
5264 {
5265 struct wpa_driver_nl80211_data *drv = bss->drv;
5266 struct nl_msg *msg;
5267 int ret;
5269 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
5270 "sec_channel_offset=%d)",
5271 freq, ht_enabled, sec_channel_offset);
5272 msg = nlmsg_alloc();
5273 if (!msg)
5274 return -1;
5276 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5278 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5279 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5280 if (ht_enabled) {
5281 switch (sec_channel_offset) {
5282 case -1:
5283 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5284 NL80211_CHAN_HT40MINUS);
5285 break;
5286 case 1:
5287 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5288 NL80211_CHAN_HT40PLUS);
5289 break;
5290 default:
5291 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5292 NL80211_CHAN_HT20);
5293 break;
5294 }
5295 }
5297 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5298 if (ret == 0) {
5299 bss->freq = freq;
5300 return 0;
5301 }
5302 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
5303 "%d (%s)", freq, ret, strerror(-ret));
5304 nla_put_failure:
5305 return -1;
5306 }
5309 static u32 sta_flags_nl80211(int flags)
5310 {
5311 u32 f = 0;
5313 if (flags & WPA_STA_AUTHORIZED)
5314 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
5315 if (flags & WPA_STA_WMM)
5316 f |= BIT(NL80211_STA_FLAG_WME);
5317 if (flags & WPA_STA_SHORT_PREAMBLE)
5318 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
5319 if (flags & WPA_STA_MFP)
5320 f |= BIT(NL80211_STA_FLAG_MFP);
5321 if (flags & WPA_STA_TDLS_PEER)
5322 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
5324 return f;
5325 }
5328 static int wpa_driver_nl80211_sta_add(void *priv,
5329 struct hostapd_sta_add_params *params)
5330 {
5331 struct i802_bss *bss = priv;
5332 struct wpa_driver_nl80211_data *drv = bss->drv;
5333 struct nl_msg *msg;
5334 struct nl80211_sta_flag_update upd;
5335 int ret = -ENOBUFS;
5337 if ((params->flags & WPA_STA_TDLS_PEER) &&
5338 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
5339 return -EOPNOTSUPP;
5341 msg = nlmsg_alloc();
5342 if (!msg)
5343 return -ENOMEM;
5345 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
5346 NL80211_CMD_NEW_STATION);
5348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5349 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
5350 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
5351 params->supp_rates);
5352 if (!params->set) {
5353 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
5354 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
5355 params->listen_interval);
5356 }
5357 if (params->ht_capabilities) {
5358 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
5359 sizeof(*params->ht_capabilities),
5360 params->ht_capabilities);
5361 }
5363 os_memset(&upd, 0, sizeof(upd));
5364 upd.mask = sta_flags_nl80211(params->flags);
5365 upd.set = upd.mask;
5366 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5368 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5369 if (ret)
5370 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
5371 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
5372 strerror(-ret));
5373 if (ret == -EEXIST)
5374 ret = 0;
5375 nla_put_failure:
5376 return ret;
5377 }
5380 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
5381 {
5382 struct i802_bss *bss = priv;
5383 struct wpa_driver_nl80211_data *drv = bss->drv;
5384 struct nl_msg *msg;
5385 int ret;
5387 msg = nlmsg_alloc();
5388 if (!msg)
5389 return -ENOMEM;
5391 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5393 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5394 if_nametoindex(bss->ifname));
5395 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5397 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5398 if (ret == -ENOENT)
5399 return 0;
5400 return ret;
5401 nla_put_failure:
5402 return -ENOBUFS;
5403 }
5406 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
5407 int ifidx)
5408 {
5409 struct nl_msg *msg;
5411 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
5413 /* stop listening for EAPOL on this interface */
5414 del_ifidx(drv, ifidx);
5416 msg = nlmsg_alloc();
5417 if (!msg)
5418 goto nla_put_failure;
5420 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
5421 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
5423 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5424 return;
5425 nla_put_failure:
5426 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
5427 }
5430 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
5431 {
5432 switch (mode) {
5433 case NL80211_IFTYPE_ADHOC:
5434 return "ADHOC";
5435 case NL80211_IFTYPE_STATION:
5436 return "STATION";
5437 case NL80211_IFTYPE_AP:
5438 return "AP";
5439 case NL80211_IFTYPE_MONITOR:
5440 return "MONITOR";
5441 case NL80211_IFTYPE_P2P_CLIENT:
5442 return "P2P_CLIENT";
5443 case NL80211_IFTYPE_P2P_GO:
5444 return "P2P_GO";
5445 default:
5446 return "unknown";
5447 }
5448 }
5451 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
5452 const char *ifname,
5453 enum nl80211_iftype iftype,
5454 const u8 *addr, int wds)
5455 {
5456 struct nl_msg *msg, *flags = NULL;
5457 int ifidx;
5458 int ret = -ENOBUFS;
5460 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
5461 iftype, nl80211_iftype_str(iftype));
5463 msg = nlmsg_alloc();
5464 if (!msg)
5465 return -1;
5467 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
5468 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5469 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
5470 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
5472 if (iftype == NL80211_IFTYPE_MONITOR) {
5473 int err;
5475 flags = nlmsg_alloc();
5476 if (!flags)
5477 goto nla_put_failure;
5479 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
5481 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
5483 nlmsg_free(flags);
5485 if (err)
5486 goto nla_put_failure;
5487 } else if (wds) {
5488 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
5489 }
5491 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5492 if (ret) {
5493 nla_put_failure:
5494 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
5495 ifname, ret, strerror(-ret));
5496 return ret;
5497 }
5499 ifidx = if_nametoindex(ifname);
5500 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
5501 ifname, ifidx);
5503 if (ifidx <= 0)
5504 return -1;
5506 /* start listening for EAPOL on this interface */
5507 add_ifidx(drv, ifidx);
5509 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
5510 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
5511 nl80211_remove_iface(drv, ifidx);
5512 return -1;
5513 }
5515 return ifidx;
5516 }
5519 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
5520 const char *ifname, enum nl80211_iftype iftype,
5521 const u8 *addr, int wds)
5522 {
5523 int ret;
5525 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
5527 /* if error occurred and interface exists already */
5528 if (ret == -ENFILE && if_nametoindex(ifname)) {
5529 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
5531 /* Try to remove the interface that was already there. */
5532 nl80211_remove_iface(drv, if_nametoindex(ifname));
5534 /* Try to create the interface again */
5535 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
5536 wds);
5537 }
5539 if (ret >= 0 && is_p2p_interface(iftype))
5540 nl80211_disable_11b_rates(drv, ret, 1);
5542 return ret;
5543 }
5546 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
5547 {
5548 struct ieee80211_hdr *hdr;
5549 u16 fc;
5550 union wpa_event_data event;
5552 hdr = (struct ieee80211_hdr *) buf;
5553 fc = le_to_host16(hdr->frame_control);
5555 os_memset(&event, 0, sizeof(event));
5556 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
5557 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
5558 event.tx_status.dst = hdr->addr1;
5559 event.tx_status.data = buf;
5560 event.tx_status.data_len = len;
5561 event.tx_status.ack = ok;
5562 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
5563 }
5566 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
5567 u8 *buf, size_t len)
5568 {
5569 struct ieee80211_hdr *hdr = (void *)buf;
5570 u16 fc;
5571 union wpa_event_data event;
5573 if (len < sizeof(*hdr))
5574 return;
5576 fc = le_to_host16(hdr->frame_control);
5578 os_memset(&event, 0, sizeof(event));
5579 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
5580 event.rx_from_unknown.addr = hdr->addr2;
5581 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
5582 (WLAN_FC_FROMDS | WLAN_FC_TODS);
5583 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
5584 }
5587 static void handle_frame(struct wpa_driver_nl80211_data *drv,
5588 u8 *buf, size_t len, int datarate, int ssi_signal)
5589 {
5590 struct ieee80211_hdr *hdr;
5591 u16 fc;
5592 union wpa_event_data event;
5594 hdr = (struct ieee80211_hdr *) buf;
5595 fc = le_to_host16(hdr->frame_control);
5597 switch (WLAN_FC_GET_TYPE(fc)) {
5598 case WLAN_FC_TYPE_MGMT:
5599 os_memset(&event, 0, sizeof(event));
5600 event.rx_mgmt.frame = buf;
5601 event.rx_mgmt.frame_len = len;
5602 event.rx_mgmt.datarate = datarate;
5603 event.rx_mgmt.ssi_signal = ssi_signal;
5604 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
5605 break;
5606 case WLAN_FC_TYPE_CTRL:
5607 /* can only get here with PS-Poll frames */
5608 wpa_printf(MSG_DEBUG, "CTRL");
5609 from_unknown_sta(drv, buf, len);
5610 break;
5611 case WLAN_FC_TYPE_DATA:
5612 from_unknown_sta(drv, buf, len);
5613 break;
5614 }
5615 }
5618 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
5619 {
5620 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5621 int len;
5622 unsigned char buf[3000];
5623 struct ieee80211_radiotap_iterator iter;
5624 int ret;
5625 int datarate = 0, ssi_signal = 0;
5626 int injected = 0, failed = 0, rxflags = 0;
5628 len = recv(sock, buf, sizeof(buf), 0);
5629 if (len < 0) {
5630 perror("recv");
5631 return;
5632 }
5634 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
5635 printf("received invalid radiotap frame\n");
5636 return;
5637 }
5639 while (1) {
5640 ret = ieee80211_radiotap_iterator_next(&iter);
5641 if (ret == -ENOENT)
5642 break;
5643 if (ret) {
5644 printf("received invalid radiotap frame (%d)\n", ret);
5645 return;
5646 }
5647 switch (iter.this_arg_index) {
5648 case IEEE80211_RADIOTAP_FLAGS:
5649 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
5650 len -= 4;
5651 break;
5652 case IEEE80211_RADIOTAP_RX_FLAGS:
5653 rxflags = 1;
5654 break;
5655 case IEEE80211_RADIOTAP_TX_FLAGS:
5656 injected = 1;
5657 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
5658 IEEE80211_RADIOTAP_F_TX_FAIL;
5659 break;
5660 case IEEE80211_RADIOTAP_DATA_RETRIES:
5661 break;
5662 case IEEE80211_RADIOTAP_CHANNEL:
5663 /* TODO: convert from freq/flags to channel number */
5664 break;
5665 case IEEE80211_RADIOTAP_RATE:
5666 datarate = *iter.this_arg * 5;
5667 break;
5668 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
5669 ssi_signal = *iter.this_arg;
5670 break;
5671 }
5672 }
5674 if (rxflags && injected)
5675 return;
5677 if (!injected)
5678 handle_frame(drv, buf + iter.max_length,
5679 len - iter.max_length, datarate, ssi_signal);
5680 else
5681 handle_tx_callback(drv->ctx, buf + iter.max_length,
5682 len - iter.max_length, !failed);
5683 }
5686 /*
5687 * we post-process the filter code later and rewrite
5688 * this to the offset to the last instruction
5689 */
5690 #define PASS 0xFF
5691 #define FAIL 0xFE
5693 static struct sock_filter msock_filter_insns[] = {
5694 /*
5695 * do a little-endian load of the radiotap length field
5696 */
5697 /* load lower byte into A */
5698 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
5699 /* put it into X (== index register) */
5700 BPF_STMT(BPF_MISC| BPF_TAX, 0),
5701 /* load upper byte into A */
5702 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
5703 /* left-shift it by 8 */
5704 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
5705 /* or with X */
5706 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
5707 /* put result into X */
5708 BPF_STMT(BPF_MISC| BPF_TAX, 0),
5710 /*
5711 * Allow management frames through, this also gives us those
5712 * management frames that we sent ourselves with status
5713 */
5714 /* load the lower byte of the IEEE 802.11 frame control field */
5715 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5716 /* mask off frame type and version */
5717 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
5718 /* accept frame if it's both 0, fall through otherwise */
5719 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
5721 /*
5722 * TODO: add a bit to radiotap RX flags that indicates
5723 * that the sending station is not associated, then
5724 * add a filter here that filters on our DA and that flag
5725 * to allow us to deauth frames to that bad station.
5726 *
5727 * For now allow all To DS data frames through.
5728 */
5729 /* load the IEEE 802.11 frame control field */
5730 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
5731 /* mask off frame type, version and DS status */
5732 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
5733 /* accept frame if version 0, type 2 and To DS, fall through otherwise
5734 */
5735 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
5737 #if 0
5738 /*
5739 * drop non-data frames
5740 */
5741 /* load the lower byte of the frame control field */
5742 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5743 /* mask off QoS bit */
5744 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
5745 /* drop non-data frames */
5746 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
5747 #endif
5748 /* load the upper byte of the frame control field */
5749 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
5750 /* mask off toDS/fromDS */
5751 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
5752 /* accept WDS frames */
5753 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
5755 /*
5756 * add header length to index
5757 */
5758 /* load the lower byte of the frame control field */
5759 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5760 /* mask off QoS bit */
5761 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
5762 /* right shift it by 6 to give 0 or 2 */
5763 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
5764 /* add data frame header length */
5765 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
5766 /* add index, was start of 802.11 header */
5767 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
5768 /* move to index, now start of LL header */
5769 BPF_STMT(BPF_MISC | BPF_TAX, 0),
5771 /*
5772 * Accept empty data frames, we use those for
5773 * polling activity.
5774 */
5775 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
5776 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
5778 /*
5779 * Accept EAPOL frames
5780 */
5781 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
5782 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
5783 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
5784 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
5786 /* keep these last two statements or change the code below */
5787 /* return 0 == "DROP" */
5788 BPF_STMT(BPF_RET | BPF_K, 0),
5789 /* return ~0 == "keep all" */
5790 BPF_STMT(BPF_RET | BPF_K, ~0),
5791 };
5793 static struct sock_fprog msock_filter = {
5794 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
5795 .filter = msock_filter_insns,
5796 };
5799 static int add_monitor_filter(int s)
5800 {
5801 int idx;
5803 /* rewrite all PASS/FAIL jump offsets */
5804 for (idx = 0; idx < msock_filter.len; idx++) {
5805 struct sock_filter *insn = &msock_filter_insns[idx];
5807 if (BPF_CLASS(insn->code) == BPF_JMP) {
5808 if (insn->code == (BPF_JMP|BPF_JA)) {
5809 if (insn->k == PASS)
5810 insn->k = msock_filter.len - idx - 2;
5811 else if (insn->k == FAIL)
5812 insn->k = msock_filter.len - idx - 3;
5813 }
5815 if (insn->jt == PASS)
5816 insn->jt = msock_filter.len - idx - 2;
5817 else if (insn->jt == FAIL)
5818 insn->jt = msock_filter.len - idx - 3;
5820 if (insn->jf == PASS)
5821 insn->jf = msock_filter.len - idx - 2;
5822 else if (insn->jf == FAIL)
5823 insn->jf = msock_filter.len - idx - 3;
5824 }
5825 }
5827 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
5828 &msock_filter, sizeof(msock_filter))) {
5829 perror("SO_ATTACH_FILTER");
5830 return -1;
5831 }
5833 return 0;
5834 }
5837 static void nl80211_remove_monitor_interface(
5838 struct wpa_driver_nl80211_data *drv)
5839 {
5840 drv->monitor_refcount--;
5841 if (drv->monitor_refcount > 0)
5842 return;
5844 if (drv->monitor_ifidx >= 0) {
5845 nl80211_remove_iface(drv, drv->monitor_ifidx);
5846 drv->monitor_ifidx = -1;
5847 }
5848 if (drv->monitor_sock >= 0) {
5849 eloop_unregister_read_sock(drv->monitor_sock);
5850 close(drv->monitor_sock);
5851 drv->monitor_sock = -1;
5852 }
5853 }
5856 static int
5857 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
5858 {
5859 char buf[IFNAMSIZ];
5860 struct sockaddr_ll ll;
5861 int optval;
5862 socklen_t optlen;
5864 if (drv->monitor_ifidx >= 0) {
5865 drv->monitor_refcount++;
5866 return 0;
5867 }
5869 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
5870 /*
5871 * P2P interface name is of the format p2p-%s-%d. For monitor
5872 * interface name corresponding to P2P GO, replace "p2p-" with
5873 * "mon-" to retain the same interface name length and to
5874 * indicate that it is a monitor interface.
5875 */
5876 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
5877 } else {
5878 /* Non-P2P interface with AP functionality. */
5879 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
5880 }
5882 buf[IFNAMSIZ - 1] = '\0';
5884 drv->monitor_ifidx =
5885 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
5886 0);
5888 if (drv->monitor_ifidx == -EOPNOTSUPP) {
5889 /*
5890 * This is backward compatibility for a few versions of
5891 * the kernel only that didn't advertise the right
5892 * attributes for the only driver that then supported
5893 * AP mode w/o monitor -- ath6kl.
5894 */
5895 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
5896 "monitor interface type - try to run without it");
5897 drv->device_ap_sme = 1;
5898 }
5900 if (drv->monitor_ifidx < 0)
5901 return -1;
5903 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
5904 goto error;
5906 memset(&ll, 0, sizeof(ll));
5907 ll.sll_family = AF_PACKET;
5908 ll.sll_ifindex = drv->monitor_ifidx;
5909 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
5910 if (drv->monitor_sock < 0) {
5911 perror("socket[PF_PACKET,SOCK_RAW]");
5912 goto error;
5913 }
5915 if (add_monitor_filter(drv->monitor_sock)) {
5916 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
5917 "interface; do filtering in user space");
5918 /* This works, but will cost in performance. */
5919 }
5921 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
5922 perror("monitor socket bind");
5923 goto error;
5924 }
5926 optlen = sizeof(optval);
5927 optval = 20;
5928 if (setsockopt
5929 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
5930 perror("Failed to set socket priority");
5931 goto error;
5932 }
5934 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
5935 drv, NULL)) {
5936 printf("Could not register monitor read socket\n");
5937 goto error;
5938 }
5940 return 0;
5941 error:
5942 nl80211_remove_monitor_interface(drv);
5943 return -1;
5944 }
5947 static int nl80211_setup_ap(struct i802_bss *bss)
5948 {
5949 struct wpa_driver_nl80211_data *drv = bss->drv;
5951 /*
5952 * Disable Probe Request reporting unless we need it in this way for
5953 * devices that include the AP SME, in the other case (unless using
5954 * monitor iface) we'll get it through the nl_mgmt socket instead.
5955 */
5956 if (!drv->device_ap_sme)
5957 wpa_driver_nl80211_probe_req_report(bss, 0);
5959 if (!drv->device_ap_sme && !drv->use_monitor)
5960 if (nl80211_mgmt_subscribe_ap(bss))
5961 return -1;
5963 if (!drv->device_ap_sme && drv->use_monitor &&
5964 nl80211_create_monitor_interface(drv) &&
5965 !drv->device_ap_sme)
5966 return -1;
5968 if (drv->device_ap_sme &&
5969 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
5970 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
5971 "Probe Request frame reporting in AP mode");
5972 /* Try to survive without this */
5973 }
5975 return 0;
5976 }
5979 static void nl80211_teardown_ap(struct i802_bss *bss)
5980 {
5981 struct wpa_driver_nl80211_data *drv = bss->drv;
5983 if (drv->device_ap_sme)
5984 wpa_driver_nl80211_probe_req_report(bss, 0);
5985 else if (drv->use_monitor)
5986 nl80211_remove_monitor_interface(drv);
5987 else
5988 nl80211_mgmt_unsubscribe(bss);
5990 bss->beacon_set = 0;
5991 }
5994 static int nl80211_send_eapol_data(struct i802_bss *bss,
5995 const u8 *addr, const u8 *data,
5996 size_t data_len)
5997 {
5998 struct sockaddr_ll ll;
5999 int ret;
6001 if (bss->drv->eapol_tx_sock < 0) {
6002 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
6003 return -1;
6004 }
6006 os_memset(&ll, 0, sizeof(ll));
6007 ll.sll_family = AF_PACKET;
6008 ll.sll_ifindex = bss->ifindex;
6009 ll.sll_protocol = htons(ETH_P_PAE);
6010 ll.sll_halen = ETH_ALEN;
6011 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
6012 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
6013 (struct sockaddr *) &ll, sizeof(ll));
6014 if (ret < 0)
6015 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
6016 strerror(errno));
6018 return ret;
6019 }
6022 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
6024 static int wpa_driver_nl80211_hapd_send_eapol(
6025 void *priv, const u8 *addr, const u8 *data,
6026 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
6027 {
6028 struct i802_bss *bss = priv;
6029 struct wpa_driver_nl80211_data *drv = bss->drv;
6030 struct ieee80211_hdr *hdr;
6031 size_t len;
6032 u8 *pos;
6033 int res;
6034 int qos = flags & WPA_STA_WMM;
6036 if (drv->device_ap_sme || !drv->use_monitor)
6037 return nl80211_send_eapol_data(bss, addr, data, data_len);
6039 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
6040 data_len;
6041 hdr = os_zalloc(len);
6042 if (hdr == NULL) {
6043 printf("malloc() failed for i802_send_data(len=%lu)\n",
6044 (unsigned long) len);
6045 return -1;
6046 }
6048 hdr->frame_control =
6049 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
6050 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
6051 if (encrypt)
6052 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
6053 if (qos) {
6054 hdr->frame_control |=
6055 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
6056 }
6058 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6059 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6060 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6061 pos = (u8 *) (hdr + 1);
6063 if (qos) {
6064 /* add an empty QoS header if needed */
6065 pos[0] = 0;
6066 pos[1] = 0;
6067 pos += 2;
6068 }
6070 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
6071 pos += sizeof(rfc1042_header);
6072 WPA_PUT_BE16(pos, ETH_P_PAE);
6073 pos += 2;
6074 memcpy(pos, data, data_len);
6076 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0);
6077 if (res < 0) {
6078 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
6079 "failed: %d (%s)",
6080 (unsigned long) len, errno, strerror(errno));
6081 }
6082 os_free(hdr);
6084 return res;
6085 }
6088 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
6089 int total_flags,
6090 int flags_or, int flags_and)
6091 {
6092 struct i802_bss *bss = priv;
6093 struct wpa_driver_nl80211_data *drv = bss->drv;
6094 struct nl_msg *msg, *flags = NULL;
6095 struct nl80211_sta_flag_update upd;
6097 msg = nlmsg_alloc();
6098 if (!msg)
6099 return -ENOMEM;
6101 flags = nlmsg_alloc();
6102 if (!flags) {
6103 nlmsg_free(msg);
6104 return -ENOMEM;
6105 }
6107 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6109 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6110 if_nametoindex(bss->ifname));
6111 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6113 /*
6114 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
6115 * can be removed eventually.
6116 */
6117 if (total_flags & WPA_STA_AUTHORIZED)
6118 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
6120 if (total_flags & WPA_STA_WMM)
6121 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
6123 if (total_flags & WPA_STA_SHORT_PREAMBLE)
6124 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
6126 if (total_flags & WPA_STA_MFP)
6127 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
6129 if (total_flags & WPA_STA_TDLS_PEER)
6130 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
6132 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
6133 goto nla_put_failure;
6135 os_memset(&upd, 0, sizeof(upd));
6136 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
6137 upd.set = sta_flags_nl80211(flags_or);
6138 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6140 nlmsg_free(flags);
6142 return send_and_recv_msgs(drv, msg, NULL, NULL);
6143 nla_put_failure:
6144 nlmsg_free(flags);
6145 return -ENOBUFS;
6146 }
6149 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
6150 struct wpa_driver_associate_params *params)
6151 {
6152 enum nl80211_iftype nlmode;
6154 if (params->p2p) {
6155 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
6156 "group (GO)");
6157 nlmode = NL80211_IFTYPE_P2P_GO;
6158 } else
6159 nlmode = NL80211_IFTYPE_AP;
6161 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
6162 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
6163 nl80211_remove_monitor_interface(drv);
6164 return -1;
6165 }
6167 return 0;
6168 }
6171 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
6172 {
6173 struct nl_msg *msg;
6174 int ret = -1;
6176 msg = nlmsg_alloc();
6177 if (!msg)
6178 return -1;
6180 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
6181 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6182 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6183 msg = NULL;
6184 if (ret) {
6185 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
6186 "(%s)", ret, strerror(-ret));
6187 goto nla_put_failure;
6188 }
6190 ret = 0;
6191 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
6193 nla_put_failure:
6194 nlmsg_free(msg);
6195 return ret;
6196 }
6199 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
6200 struct wpa_driver_associate_params *params)
6201 {
6202 struct nl_msg *msg;
6203 int ret = -1;
6204 int count = 0;
6206 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
6208 if (wpa_driver_nl80211_set_mode(&drv->first_bss,
6209 NL80211_IFTYPE_ADHOC)) {
6210 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
6211 "IBSS mode");
6212 return -1;
6213 }
6215 retry:
6216 msg = nlmsg_alloc();
6217 if (!msg)
6218 return -1;
6220 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
6221 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6223 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
6224 goto nla_put_failure;
6226 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6227 params->ssid, params->ssid_len);
6228 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6229 params->ssid);
6230 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6231 drv->ssid_len = params->ssid_len;
6233 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6234 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6236 ret = nl80211_set_conn_keys(params, msg);
6237 if (ret)
6238 goto nla_put_failure;
6240 if (params->wpa_ie) {
6241 wpa_hexdump(MSG_DEBUG,
6242 " * Extra IEs for Beacon/Probe Response frames",
6243 params->wpa_ie, params->wpa_ie_len);
6244 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6245 params->wpa_ie);
6246 }
6248 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6249 msg = NULL;
6250 if (ret) {
6251 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
6252 ret, strerror(-ret));
6253 count++;
6254 if (ret == -EALREADY && count == 1) {
6255 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
6256 "forced leave");
6257 nl80211_leave_ibss(drv);
6258 nlmsg_free(msg);
6259 goto retry;
6260 }
6262 goto nla_put_failure;
6263 }
6264 ret = 0;
6265 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
6267 nla_put_failure:
6268 nlmsg_free(msg);
6269 return ret;
6270 }
6273 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
6274 u8 *bssid)
6275 {
6276 struct nl_msg *msg;
6277 int ret;
6278 struct nl80211_bss_info_arg arg;
6280 os_memset(&arg, 0, sizeof(arg));
6281 msg = nlmsg_alloc();
6282 if (!msg)
6283 goto nla_put_failure;
6285 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
6286 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6288 arg.drv = drv;
6289 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
6290 msg = NULL;
6291 if (ret == 0) {
6292 if (is_zero_ether_addr(arg.assoc_bssid))
6293 return -ENOTCONN;
6294 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
6295 return 0;
6296 }
6297 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
6298 "(%s)", ret, strerror(-ret));
6299 nla_put_failure:
6300 nlmsg_free(msg);
6301 return drv->assoc_freq;
6302 }
6305 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
6306 const u8 *bssid)
6307 {
6308 u8 addr[ETH_ALEN];
6310 if (bssid == NULL) {
6311 int res = nl80211_get_assoc_bssid(drv, addr);
6312 if (res)
6313 return res;
6314 bssid = addr;
6315 }
6317 return wpa_driver_nl80211_disconnect(drv, bssid,
6318 WLAN_REASON_PREV_AUTH_NOT_VALID);
6319 }
6322 static int wpa_driver_nl80211_connect(
6323 struct wpa_driver_nl80211_data *drv,
6324 struct wpa_driver_associate_params *params)
6325 {
6326 struct nl_msg *msg;
6327 enum nl80211_auth_type type;
6328 int ret = 0;
6329 int algs;
6331 msg = nlmsg_alloc();
6332 if (!msg)
6333 return -1;
6335 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
6336 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
6338 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6339 if (params->bssid) {
6340 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6341 MAC2STR(params->bssid));
6342 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6343 }
6344 if (params->freq) {
6345 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6346 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6347 }
6348 if (params->ssid) {
6349 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6350 params->ssid, params->ssid_len);
6351 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6352 params->ssid);
6353 if (params->ssid_len > sizeof(drv->ssid))
6354 goto nla_put_failure;
6355 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6356 drv->ssid_len = params->ssid_len;
6357 }
6358 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6359 if (params->wpa_ie)
6360 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6361 params->wpa_ie);
6363 algs = 0;
6364 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6365 algs++;
6366 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6367 algs++;
6368 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6369 algs++;
6370 if (algs > 1) {
6371 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
6372 "selection");
6373 goto skip_auth_type;
6374 }
6376 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6377 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
6378 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6379 type = NL80211_AUTHTYPE_SHARED_KEY;
6380 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6381 type = NL80211_AUTHTYPE_NETWORK_EAP;
6382 else if (params->auth_alg & WPA_AUTH_ALG_FT)
6383 type = NL80211_AUTHTYPE_FT;
6384 else
6385 goto nla_put_failure;
6387 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
6388 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
6390 skip_auth_type:
6391 if (params->wpa_proto) {
6392 enum nl80211_wpa_versions ver = 0;
6394 if (params->wpa_proto & WPA_PROTO_WPA)
6395 ver |= NL80211_WPA_VERSION_1;
6396 if (params->wpa_proto & WPA_PROTO_RSN)
6397 ver |= NL80211_WPA_VERSION_2;
6399 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
6400 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6401 }
6403 if (params->pairwise_suite != CIPHER_NONE) {
6404 int cipher;
6406 switch (params->pairwise_suite) {
6407 case CIPHER_WEP40:
6408 cipher = WLAN_CIPHER_SUITE_WEP40;
6409 break;
6410 case CIPHER_WEP104:
6411 cipher = WLAN_CIPHER_SUITE_WEP104;
6412 break;
6413 case CIPHER_CCMP:
6414 cipher = WLAN_CIPHER_SUITE_CCMP;
6415 break;
6416 case CIPHER_TKIP:
6417 default:
6418 cipher = WLAN_CIPHER_SUITE_TKIP;
6419 break;
6420 }
6421 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6422 }
6424 if (params->group_suite != CIPHER_NONE) {
6425 int cipher;
6427 switch (params->group_suite) {
6428 case CIPHER_WEP40:
6429 cipher = WLAN_CIPHER_SUITE_WEP40;
6430 break;
6431 case CIPHER_WEP104:
6432 cipher = WLAN_CIPHER_SUITE_WEP104;
6433 break;
6434 case CIPHER_CCMP:
6435 cipher = WLAN_CIPHER_SUITE_CCMP;
6436 break;
6437 case CIPHER_TKIP:
6438 default:
6439 cipher = WLAN_CIPHER_SUITE_TKIP;
6440 break;
6441 }
6442 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6443 }
6445 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6446 params->key_mgmt_suite == KEY_MGMT_PSK) {
6447 int mgmt = WLAN_AKM_SUITE_PSK;
6449 switch (params->key_mgmt_suite) {
6450 case KEY_MGMT_802_1X:
6451 mgmt = WLAN_AKM_SUITE_8021X;
6452 break;
6453 case KEY_MGMT_PSK:
6454 default:
6455 mgmt = WLAN_AKM_SUITE_PSK;
6456 break;
6457 }
6458 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
6459 }
6461 ret = nl80211_set_conn_keys(params, msg);
6462 if (ret)
6463 goto nla_put_failure;
6465 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6466 msg = NULL;
6467 if (ret) {
6468 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
6469 "(%s)", ret, strerror(-ret));
6470 /*
6471 * cfg80211 does not currently accept new connection if we are
6472 * already connected. As a workaround, force disconnection and
6473 * try again once the driver indicates it completed
6474 * disconnection.
6475 */
6476 if (ret == -EALREADY)
6477 nl80211_disconnect(drv, params->bssid);
6478 goto nla_put_failure;
6479 }
6480 ret = 0;
6481 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
6483 nla_put_failure:
6484 nlmsg_free(msg);
6485 return ret;
6487 }
6490 static int wpa_driver_nl80211_associate(
6491 void *priv, struct wpa_driver_associate_params *params)
6492 {
6493 struct i802_bss *bss = priv;
6494 struct wpa_driver_nl80211_data *drv = bss->drv;
6495 int ret = -1;
6496 struct nl_msg *msg;
6498 if (params->mode == IEEE80211_MODE_AP)
6499 return wpa_driver_nl80211_ap(drv, params);
6501 if (params->mode == IEEE80211_MODE_IBSS)
6502 return wpa_driver_nl80211_ibss(drv, params);
6504 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
6505 enum nl80211_iftype nlmode = params->p2p ?
6506 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
6508 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
6509 return -1;
6510 return wpa_driver_nl80211_connect(drv, params);
6511 }
6513 drv->associated = 0;
6515 msg = nlmsg_alloc();
6516 if (!msg)
6517 return -1;
6519 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
6520 drv->ifindex);
6521 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
6523 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6524 if (params->bssid) {
6525 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6526 MAC2STR(params->bssid));
6527 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6528 }
6529 if (params->freq) {
6530 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6531 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6532 drv->assoc_freq = params->freq;
6533 } else
6534 drv->assoc_freq = 0;
6535 if (params->ssid) {
6536 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6537 params->ssid, params->ssid_len);
6538 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6539 params->ssid);
6540 if (params->ssid_len > sizeof(drv->ssid))
6541 goto nla_put_failure;
6542 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6543 drv->ssid_len = params->ssid_len;
6544 }
6545 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6546 if (params->wpa_ie)
6547 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6548 params->wpa_ie);
6550 if (params->pairwise_suite != CIPHER_NONE) {
6551 int cipher;
6553 switch (params->pairwise_suite) {
6554 case CIPHER_WEP40:
6555 cipher = WLAN_CIPHER_SUITE_WEP40;
6556 break;
6557 case CIPHER_WEP104:
6558 cipher = WLAN_CIPHER_SUITE_WEP104;
6559 break;
6560 case CIPHER_CCMP:
6561 cipher = WLAN_CIPHER_SUITE_CCMP;
6562 break;
6563 case CIPHER_TKIP:
6564 default:
6565 cipher = WLAN_CIPHER_SUITE_TKIP;
6566 break;
6567 }
6568 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
6569 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6570 }
6572 if (params->group_suite != CIPHER_NONE) {
6573 int cipher;
6575 switch (params->group_suite) {
6576 case CIPHER_WEP40:
6577 cipher = WLAN_CIPHER_SUITE_WEP40;
6578 break;
6579 case CIPHER_WEP104:
6580 cipher = WLAN_CIPHER_SUITE_WEP104;
6581 break;
6582 case CIPHER_CCMP:
6583 cipher = WLAN_CIPHER_SUITE_CCMP;
6584 break;
6585 case CIPHER_TKIP:
6586 default:
6587 cipher = WLAN_CIPHER_SUITE_TKIP;
6588 break;
6589 }
6590 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
6591 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6592 }
6594 #ifdef CONFIG_IEEE80211W
6595 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
6596 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
6597 #endif /* CONFIG_IEEE80211W */
6599 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6601 if (params->prev_bssid) {
6602 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
6603 MAC2STR(params->prev_bssid));
6604 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
6605 params->prev_bssid);
6606 }
6608 if (params->p2p)
6609 wpa_printf(MSG_DEBUG, " * P2P group");
6611 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6612 msg = NULL;
6613 if (ret) {
6614 wpa_dbg(drv->ctx, MSG_DEBUG,
6615 "nl80211: MLME command failed (assoc): ret=%d (%s)",
6616 ret, strerror(-ret));
6617 nl80211_dump_scan(drv);
6618 goto nla_put_failure;
6619 }
6620 ret = 0;
6621 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
6622 "successfully");
6624 nla_put_failure:
6625 nlmsg_free(msg);
6626 return ret;
6627 }
6630 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
6631 int ifindex, enum nl80211_iftype mode)
6632 {
6633 struct nl_msg *msg;
6634 int ret = -ENOBUFS;
6636 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
6637 ifindex, mode, nl80211_iftype_str(mode));
6639 msg = nlmsg_alloc();
6640 if (!msg)
6641 return -ENOMEM;
6643 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
6644 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6645 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
6647 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6648 if (!ret)
6649 return 0;
6650 nla_put_failure:
6651 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
6652 " %d (%s)", ifindex, mode, ret, strerror(-ret));
6653 return ret;
6654 }
6657 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
6658 enum nl80211_iftype nlmode)
6659 {
6660 struct wpa_driver_nl80211_data *drv = bss->drv;
6661 int ret = -1;
6662 int i;
6663 int was_ap = is_ap_interface(drv->nlmode);
6665 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
6666 drv->nlmode = nlmode;
6667 ret = 0;
6668 goto done;
6669 }
6671 if (nlmode == drv->nlmode) {
6672 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
6673 "requested mode - ignore error");
6674 ret = 0;
6675 goto done; /* Already in the requested mode */
6676 }
6678 /* mac80211 doesn't allow mode changes while the device is up, so
6679 * take the device down, try to set the mode again, and bring the
6680 * device back up.
6681 */
6682 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
6683 "interface down");
6684 for (i = 0; i < 10; i++) {
6685 int res;
6686 res = linux_set_iface_flags(drv->global->ioctl_sock,
6687 bss->ifname, 0);
6688 if (res == -EACCES || res == -ENODEV)
6689 break;
6690 if (res == 0) {
6691 /* Try to set the mode again while the interface is
6692 * down */
6693 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
6694 if (ret == -EACCES)
6695 break;
6696 res = linux_set_iface_flags(drv->global->ioctl_sock,
6697 bss->ifname, 1);
6698 if (res && !ret)
6699 ret = -1;
6700 else if (ret != -EBUSY)
6701 break;
6702 } else
6703 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
6704 "interface down");
6705 os_sleep(0, 100000);
6706 }
6708 if (!ret) {
6709 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
6710 "interface is down");
6711 drv->nlmode = nlmode;
6712 drv->ignore_if_down_event = 1;
6713 }
6715 done:
6716 if (ret) {
6717 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
6718 "from %d failed", nlmode, drv->nlmode);
6719 return ret;
6720 }
6722 if (is_ap_interface(nlmode)) {
6723 nl80211_mgmt_unsubscribe(bss);
6724 /* Setup additional AP mode functionality if needed */
6725 if (nl80211_setup_ap(bss))
6726 return -1;
6727 } else if (was_ap) {
6728 /* Remove additional AP mode functionality */
6729 nl80211_teardown_ap(bss);
6730 } else {
6731 nl80211_mgmt_unsubscribe(bss);
6732 }
6734 if (!is_ap_interface(nlmode) &&
6735 nl80211_mgmt_subscribe_non_ap(bss) < 0)
6736 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
6737 "frame processing - ignore for now");
6739 return 0;
6740 }
6743 static int wpa_driver_nl80211_get_capa(void *priv,
6744 struct wpa_driver_capa *capa)
6745 {
6746 struct i802_bss *bss = priv;
6747 struct wpa_driver_nl80211_data *drv = bss->drv;
6748 if (!drv->has_capability)
6749 return -1;
6750 os_memcpy(capa, &drv->capa, sizeof(*capa));
6751 return 0;
6752 }
6755 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
6756 {
6757 struct i802_bss *bss = priv;
6758 struct wpa_driver_nl80211_data *drv = bss->drv;
6760 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
6761 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
6762 drv->operstate = state;
6763 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
6764 state ? IF_OPER_UP : IF_OPER_DORMANT);
6765 }
6768 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
6769 {
6770 struct i802_bss *bss = priv;
6771 struct wpa_driver_nl80211_data *drv = bss->drv;
6772 struct nl_msg *msg;
6773 struct nl80211_sta_flag_update upd;
6775 msg = nlmsg_alloc();
6776 if (!msg)
6777 return -ENOMEM;
6779 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6781 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6782 if_nametoindex(bss->ifname));
6783 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
6785 os_memset(&upd, 0, sizeof(upd));
6786 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
6787 if (authorized)
6788 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
6789 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6791 return send_and_recv_msgs(drv, msg, NULL, NULL);
6792 nla_put_failure:
6793 return -ENOBUFS;
6794 }
6797 /* Set kernel driver on given frequency (MHz) */
6798 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
6799 {
6800 struct i802_bss *bss = priv;
6801 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
6802 freq->sec_channel_offset);
6803 }
6806 #if defined(HOSTAPD) || defined(CONFIG_AP)
6808 static inline int min_int(int a, int b)
6809 {
6810 if (a < b)
6811 return a;
6812 return b;
6813 }
6816 static int get_key_handler(struct nl_msg *msg, void *arg)
6817 {
6818 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6819 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6821 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6822 genlmsg_attrlen(gnlh, 0), NULL);
6824 /*
6825 * TODO: validate the key index and mac address!
6826 * Otherwise, there's a race condition as soon as
6827 * the kernel starts sending key notifications.
6828 */
6830 if (tb[NL80211_ATTR_KEY_SEQ])
6831 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
6832 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
6833 return NL_SKIP;
6834 }
6837 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
6838 int idx, u8 *seq)
6839 {
6840 struct i802_bss *bss = priv;
6841 struct wpa_driver_nl80211_data *drv = bss->drv;
6842 struct nl_msg *msg;
6844 msg = nlmsg_alloc();
6845 if (!msg)
6846 return -ENOMEM;
6848 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
6850 if (addr)
6851 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6852 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
6853 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
6855 memset(seq, 0, 6);
6857 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
6858 nla_put_failure:
6859 return -ENOBUFS;
6860 }
6863 static int i802_set_rts(void *priv, int rts)
6864 {
6865 struct i802_bss *bss = priv;
6866 struct wpa_driver_nl80211_data *drv = bss->drv;
6867 struct nl_msg *msg;
6868 int ret = -ENOBUFS;
6869 u32 val;
6871 msg = nlmsg_alloc();
6872 if (!msg)
6873 return -ENOMEM;
6875 if (rts >= 2347)
6876 val = (u32) -1;
6877 else
6878 val = rts;
6880 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6881 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6882 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
6884 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6885 if (!ret)
6886 return 0;
6887 nla_put_failure:
6888 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
6889 "%d (%s)", rts, ret, strerror(-ret));
6890 return ret;
6891 }
6894 static int i802_set_frag(void *priv, int frag)
6895 {
6896 struct i802_bss *bss = priv;
6897 struct wpa_driver_nl80211_data *drv = bss->drv;
6898 struct nl_msg *msg;
6899 int ret = -ENOBUFS;
6900 u32 val;
6902 msg = nlmsg_alloc();
6903 if (!msg)
6904 return -ENOMEM;
6906 if (frag >= 2346)
6907 val = (u32) -1;
6908 else
6909 val = frag;
6911 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6913 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
6915 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6916 if (!ret)
6917 return 0;
6918 nla_put_failure:
6919 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
6920 "%d: %d (%s)", frag, ret, strerror(-ret));
6921 return ret;
6922 }
6925 static int i802_flush(void *priv)
6926 {
6927 struct i802_bss *bss = priv;
6928 struct wpa_driver_nl80211_data *drv = bss->drv;
6929 struct nl_msg *msg;
6931 msg = nlmsg_alloc();
6932 if (!msg)
6933 return -1;
6935 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
6937 /*
6938 * XXX: FIX! this needs to flush all VLANs too
6939 */
6940 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6941 if_nametoindex(bss->ifname));
6943 return send_and_recv_msgs(drv, msg, NULL, NULL);
6944 nla_put_failure:
6945 return -ENOBUFS;
6946 }
6949 static int get_sta_handler(struct nl_msg *msg, void *arg)
6950 {
6951 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6952 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6953 struct hostap_sta_driver_data *data = arg;
6954 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
6955 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
6956 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
6957 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
6958 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
6959 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
6960 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
6961 };
6963 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6964 genlmsg_attrlen(gnlh, 0), NULL);
6966 /*
6967 * TODO: validate the interface and mac address!
6968 * Otherwise, there's a race condition as soon as
6969 * the kernel starts sending station notifications.
6970 */
6972 if (!tb[NL80211_ATTR_STA_INFO]) {
6973 wpa_printf(MSG_DEBUG, "sta stats missing!");
6974 return NL_SKIP;
6975 }
6976 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
6977 tb[NL80211_ATTR_STA_INFO],
6978 stats_policy)) {
6979 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
6980 return NL_SKIP;
6981 }
6983 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
6984 data->inactive_msec =
6985 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
6986 if (stats[NL80211_STA_INFO_RX_BYTES])
6987 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
6988 if (stats[NL80211_STA_INFO_TX_BYTES])
6989 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
6990 if (stats[NL80211_STA_INFO_RX_PACKETS])
6991 data->rx_packets =
6992 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
6993 if (stats[NL80211_STA_INFO_TX_PACKETS])
6994 data->tx_packets =
6995 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
6997 return NL_SKIP;
6998 }
7000 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
7001 const u8 *addr)
7002 {
7003 struct i802_bss *bss = priv;
7004 struct wpa_driver_nl80211_data *drv = bss->drv;
7005 struct nl_msg *msg;
7007 os_memset(data, 0, sizeof(*data));
7008 msg = nlmsg_alloc();
7009 if (!msg)
7010 return -ENOMEM;
7012 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
7014 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7015 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7017 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
7018 nla_put_failure:
7019 return -ENOBUFS;
7020 }
7023 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
7024 int cw_min, int cw_max, int burst_time)
7025 {
7026 struct i802_bss *bss = priv;
7027 struct wpa_driver_nl80211_data *drv = bss->drv;
7028 struct nl_msg *msg;
7029 struct nlattr *txq, *params;
7031 msg = nlmsg_alloc();
7032 if (!msg)
7033 return -1;
7035 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7037 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7039 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
7040 if (!txq)
7041 goto nla_put_failure;
7043 /* We are only sending parameters for a single TXQ at a time */
7044 params = nla_nest_start(msg, 1);
7045 if (!params)
7046 goto nla_put_failure;
7048 switch (queue) {
7049 case 0:
7050 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
7051 break;
7052 case 1:
7053 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
7054 break;
7055 case 2:
7056 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
7057 break;
7058 case 3:
7059 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
7060 break;
7061 }
7062 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
7063 * 32 usec, so need to convert the value here. */
7064 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
7065 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
7066 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
7067 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
7069 nla_nest_end(msg, params);
7071 nla_nest_end(msg, txq);
7073 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7074 return 0;
7075 nla_put_failure:
7076 return -1;
7077 }
7080 static int i802_set_sta_vlan(void *priv, const u8 *addr,
7081 const char *ifname, int vlan_id)
7082 {
7083 struct i802_bss *bss = priv;
7084 struct wpa_driver_nl80211_data *drv = bss->drv;
7085 struct nl_msg *msg;
7086 int ret = -ENOBUFS;
7088 msg = nlmsg_alloc();
7089 if (!msg)
7090 return -ENOMEM;
7092 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7094 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7095 if_nametoindex(bss->ifname));
7096 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7097 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
7098 if_nametoindex(ifname));
7100 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7101 if (ret < 0) {
7102 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
7103 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
7104 MAC2STR(addr), ifname, vlan_id, ret,
7105 strerror(-ret));
7106 }
7107 nla_put_failure:
7108 return ret;
7109 }
7112 static int i802_get_inact_sec(void *priv, const u8 *addr)
7113 {
7114 struct hostap_sta_driver_data data;
7115 int ret;
7117 data.inactive_msec = (unsigned long) -1;
7118 ret = i802_read_sta_data(priv, &data, addr);
7119 if (ret || data.inactive_msec == (unsigned long) -1)
7120 return -1;
7121 return data.inactive_msec / 1000;
7122 }
7125 static int i802_sta_clear_stats(void *priv, const u8 *addr)
7126 {
7127 #if 0
7128 /* TODO */
7129 #endif
7130 return 0;
7131 }
7134 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
7135 int reason)
7136 {
7137 struct i802_bss *bss = priv;
7138 struct ieee80211_mgmt mgmt;
7140 memset(&mgmt, 0, sizeof(mgmt));
7141 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7142 WLAN_FC_STYPE_DEAUTH);
7143 memcpy(mgmt.da, addr, ETH_ALEN);
7144 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7145 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7146 mgmt.u.deauth.reason_code = host_to_le16(reason);
7147 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7148 IEEE80211_HDRLEN +
7149 sizeof(mgmt.u.deauth), 0);
7150 }
7153 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
7154 int reason)
7155 {
7156 struct i802_bss *bss = priv;
7157 struct ieee80211_mgmt mgmt;
7159 memset(&mgmt, 0, sizeof(mgmt));
7160 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7161 WLAN_FC_STYPE_DISASSOC);
7162 memcpy(mgmt.da, addr, ETH_ALEN);
7163 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7164 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7165 mgmt.u.disassoc.reason_code = host_to_le16(reason);
7166 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7167 IEEE80211_HDRLEN +
7168 sizeof(mgmt.u.disassoc), 0);
7169 }
7171 #endif /* HOSTAPD || CONFIG_AP */
7173 #ifdef HOSTAPD
7175 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7176 {
7177 int i;
7178 int *old;
7180 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
7181 ifidx);
7182 for (i = 0; i < drv->num_if_indices; i++) {
7183 if (drv->if_indices[i] == 0) {
7184 drv->if_indices[i] = ifidx;
7185 return;
7186 }
7187 }
7189 if (drv->if_indices != drv->default_if_indices)
7190 old = drv->if_indices;
7191 else
7192 old = NULL;
7194 drv->if_indices = os_realloc(old,
7195 sizeof(int) * (drv->num_if_indices + 1));
7196 if (!drv->if_indices) {
7197 if (!old)
7198 drv->if_indices = drv->default_if_indices;
7199 else
7200 drv->if_indices = old;
7201 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
7202 "interfaces");
7203 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
7204 return;
7205 } else if (!old)
7206 os_memcpy(drv->if_indices, drv->default_if_indices,
7207 sizeof(drv->default_if_indices));
7208 drv->if_indices[drv->num_if_indices] = ifidx;
7209 drv->num_if_indices++;
7210 }
7213 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7214 {
7215 int i;
7217 for (i = 0; i < drv->num_if_indices; i++) {
7218 if (drv->if_indices[i] == ifidx) {
7219 drv->if_indices[i] = 0;
7220 break;
7221 }
7222 }
7223 }
7226 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7227 {
7228 int i;
7230 for (i = 0; i < drv->num_if_indices; i++)
7231 if (drv->if_indices[i] == ifidx)
7232 return 1;
7234 return 0;
7235 }
7238 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
7239 const char *bridge_ifname)
7240 {
7241 struct i802_bss *bss = priv;
7242 struct wpa_driver_nl80211_data *drv = bss->drv;
7243 char name[IFNAMSIZ + 1];
7245 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
7246 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
7247 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
7248 if (val) {
7249 if (!if_nametoindex(name)) {
7250 if (nl80211_create_iface(drv, name,
7251 NL80211_IFTYPE_AP_VLAN,
7252 NULL, 1) < 0)
7253 return -1;
7254 if (bridge_ifname &&
7255 linux_br_add_if(drv->global->ioctl_sock,
7256 bridge_ifname, name) < 0)
7257 return -1;
7258 }
7259 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
7260 return i802_set_sta_vlan(priv, addr, name, 0);
7261 } else {
7262 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
7263 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
7264 name);
7265 }
7266 }
7269 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
7270 {
7271 struct wpa_driver_nl80211_data *drv = eloop_ctx;
7272 struct sockaddr_ll lladdr;
7273 unsigned char buf[3000];
7274 int len;
7275 socklen_t fromlen = sizeof(lladdr);
7277 len = recvfrom(sock, buf, sizeof(buf), 0,
7278 (struct sockaddr *)&lladdr, &fromlen);
7279 if (len < 0) {
7280 perror("recv");
7281 return;
7282 }
7284 if (have_ifidx(drv, lladdr.sll_ifindex))
7285 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
7286 }
7289 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
7290 struct i802_bss *bss,
7291 const char *brname, const char *ifname)
7292 {
7293 int ifindex;
7294 char in_br[IFNAMSIZ];
7296 os_strlcpy(bss->brname, brname, IFNAMSIZ);
7297 ifindex = if_nametoindex(brname);
7298 if (ifindex == 0) {
7299 /*
7300 * Bridge was configured, but the bridge device does
7301 * not exist. Try to add it now.
7302 */
7303 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
7304 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
7305 "bridge interface %s: %s",
7306 brname, strerror(errno));
7307 return -1;
7308 }
7309 bss->added_bridge = 1;
7310 add_ifidx(drv, if_nametoindex(brname));
7311 }
7313 if (linux_br_get(in_br, ifname) == 0) {
7314 if (os_strcmp(in_br, brname) == 0)
7315 return 0; /* already in the bridge */
7317 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
7318 "bridge %s", ifname, in_br);
7319 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
7320 0) {
7321 wpa_printf(MSG_ERROR, "nl80211: Failed to "
7322 "remove interface %s from bridge "
7323 "%s: %s",
7324 ifname, brname, strerror(errno));
7325 return -1;
7326 }
7327 }
7329 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
7330 ifname, brname);
7331 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
7332 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
7333 "into bridge %s: %s",
7334 ifname, brname, strerror(errno));
7335 return -1;
7336 }
7337 bss->added_if_into_bridge = 1;
7339 return 0;
7340 }
7343 static void *i802_init(struct hostapd_data *hapd,
7344 struct wpa_init_params *params)
7345 {
7346 struct wpa_driver_nl80211_data *drv;
7347 struct i802_bss *bss;
7348 size_t i;
7349 char brname[IFNAMSIZ];
7350 int ifindex, br_ifindex;
7351 int br_added = 0;
7353 bss = wpa_driver_nl80211_init(hapd, params->ifname,
7354 params->global_priv);
7355 if (bss == NULL)
7356 return NULL;
7358 drv = bss->drv;
7359 drv->nlmode = NL80211_IFTYPE_AP;
7360 drv->eapol_sock = -1;
7362 if (linux_br_get(brname, params->ifname) == 0) {
7363 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
7364 params->ifname, brname);
7365 br_ifindex = if_nametoindex(brname);
7366 } else {
7367 brname[0] = '\0';
7368 br_ifindex = 0;
7369 }
7371 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
7372 drv->if_indices = drv->default_if_indices;
7373 for (i = 0; i < params->num_bridge; i++) {
7374 if (params->bridge[i]) {
7375 ifindex = if_nametoindex(params->bridge[i]);
7376 if (ifindex)
7377 add_ifidx(drv, ifindex);
7378 if (ifindex == br_ifindex)
7379 br_added = 1;
7380 }
7381 }
7382 if (!br_added && br_ifindex &&
7383 (params->num_bridge == 0 || !params->bridge[0]))
7384 add_ifidx(drv, br_ifindex);
7386 /* start listening for EAPOL on the default AP interface */
7387 add_ifidx(drv, drv->ifindex);
7389 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
7390 goto failed;
7392 if (params->bssid) {
7393 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7394 params->bssid))
7395 goto failed;
7396 }
7398 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
7399 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
7400 "into AP mode", bss->ifname);
7401 goto failed;
7402 }
7404 if (params->num_bridge && params->bridge[0] &&
7405 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
7406 goto failed;
7408 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
7409 goto failed;
7411 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
7412 if (drv->eapol_sock < 0) {
7413 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
7414 goto failed;
7415 }
7417 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
7418 {
7419 printf("Could not register read socket for eapol\n");
7420 goto failed;
7421 }
7423 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7424 params->own_addr))
7425 goto failed;
7427 return bss;
7429 failed:
7430 wpa_driver_nl80211_deinit(bss);
7431 return NULL;
7432 }
7435 static void i802_deinit(void *priv)
7436 {
7437 wpa_driver_nl80211_deinit(priv);
7438 }
7440 #endif /* HOSTAPD */
7443 static enum nl80211_iftype wpa_driver_nl80211_if_type(
7444 enum wpa_driver_if_type type)
7445 {
7446 switch (type) {
7447 case WPA_IF_STATION:
7448 return NL80211_IFTYPE_STATION;
7449 case WPA_IF_P2P_CLIENT:
7450 case WPA_IF_P2P_GROUP:
7451 return NL80211_IFTYPE_P2P_CLIENT;
7452 case WPA_IF_AP_VLAN:
7453 return NL80211_IFTYPE_AP_VLAN;
7454 case WPA_IF_AP_BSS:
7455 return NL80211_IFTYPE_AP;
7456 case WPA_IF_P2P_GO:
7457 return NL80211_IFTYPE_P2P_GO;
7458 }
7459 return -1;
7460 }
7463 #ifdef CONFIG_P2P
7465 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
7466 {
7467 struct wpa_driver_nl80211_data *drv;
7468 dl_list_for_each(drv, &global->interfaces,
7469 struct wpa_driver_nl80211_data, list) {
7470 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0)
7471 return 1;
7472 }
7473 return 0;
7474 }
7477 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
7478 u8 *new_addr)
7479 {
7480 unsigned int idx;
7482 if (!drv->global)
7483 return -1;
7485 os_memcpy(new_addr, drv->addr, ETH_ALEN);
7486 for (idx = 0; idx < 64; idx++) {
7487 new_addr[0] = drv->addr[0] | 0x02;
7488 new_addr[0] ^= idx << 2;
7489 if (!nl80211_addr_in_use(drv->global, new_addr))
7490 break;
7491 }
7492 if (idx == 64)
7493 return -1;
7495 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
7496 MACSTR, MAC2STR(new_addr));
7498 return 0;
7499 }
7501 #endif /* CONFIG_P2P */
7504 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
7505 const char *ifname, const u8 *addr,
7506 void *bss_ctx, void **drv_priv,
7507 char *force_ifname, u8 *if_addr,
7508 const char *bridge)
7509 {
7510 struct i802_bss *bss = priv;
7511 struct wpa_driver_nl80211_data *drv = bss->drv;
7512 int ifidx;
7513 #ifdef HOSTAPD
7514 struct i802_bss *new_bss = NULL;
7516 if (type == WPA_IF_AP_BSS) {
7517 new_bss = os_zalloc(sizeof(*new_bss));
7518 if (new_bss == NULL)
7519 return -1;
7520 }
7521 #endif /* HOSTAPD */
7523 if (addr)
7524 os_memcpy(if_addr, addr, ETH_ALEN);
7525 ifidx = nl80211_create_iface(drv, ifname,
7526 wpa_driver_nl80211_if_type(type), addr,
7527 0);
7528 if (ifidx < 0) {
7529 #ifdef HOSTAPD
7530 os_free(new_bss);
7531 #endif /* HOSTAPD */
7532 return -1;
7533 }
7535 if (!addr &&
7536 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7537 if_addr) < 0) {
7538 nl80211_remove_iface(drv, ifidx);
7539 return -1;
7540 }
7542 #ifdef CONFIG_P2P
7543 if (!addr &&
7544 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
7545 type == WPA_IF_P2P_GO)) {
7546 /* Enforce unique P2P Interface Address */
7547 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
7549 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7550 own_addr) < 0 ||
7551 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
7552 new_addr) < 0) {
7553 nl80211_remove_iface(drv, ifidx);
7554 return -1;
7555 }
7556 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
7557 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
7558 "for P2P group interface");
7559 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
7560 nl80211_remove_iface(drv, ifidx);
7561 return -1;
7562 }
7563 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
7564 new_addr) < 0) {
7565 nl80211_remove_iface(drv, ifidx);
7566 return -1;
7567 }
7568 }
7569 os_memcpy(if_addr, new_addr, ETH_ALEN);
7570 }
7571 #endif /* CONFIG_P2P */
7573 #ifdef HOSTAPD
7574 if (bridge &&
7575 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
7576 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
7577 "interface %s to a bridge %s", ifname, bridge);
7578 nl80211_remove_iface(drv, ifidx);
7579 os_free(new_bss);
7580 return -1;
7581 }
7583 if (type == WPA_IF_AP_BSS) {
7584 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
7585 {
7586 nl80211_remove_iface(drv, ifidx);
7587 os_free(new_bss);
7588 return -1;
7589 }
7590 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
7591 new_bss->ifindex = ifidx;
7592 new_bss->drv = drv;
7593 new_bss->next = drv->first_bss.next;
7594 drv->first_bss.next = new_bss;
7595 if (drv_priv)
7596 *drv_priv = new_bss;
7597 nl80211_init_bss(new_bss);
7598 }
7599 #endif /* HOSTAPD */
7601 if (drv->global)
7602 drv->global->if_add_ifindex = ifidx;
7604 return 0;
7605 }
7608 static int wpa_driver_nl80211_if_remove(void *priv,
7609 enum wpa_driver_if_type type,
7610 const char *ifname)
7611 {
7612 struct i802_bss *bss = priv;
7613 struct wpa_driver_nl80211_data *drv = bss->drv;
7614 int ifindex = if_nametoindex(ifname);
7616 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
7617 __func__, type, ifname, ifindex);
7618 if (ifindex <= 0)
7619 return -1;
7621 #ifdef HOSTAPD
7622 if (bss->added_if_into_bridge) {
7623 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
7624 bss->ifname) < 0)
7625 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
7626 "interface %s from bridge %s: %s",
7627 bss->ifname, bss->brname, strerror(errno));
7628 }
7629 if (bss->added_bridge) {
7630 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
7631 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
7632 "bridge %s: %s",
7633 bss->brname, strerror(errno));
7634 }
7635 #endif /* HOSTAPD */
7637 nl80211_remove_iface(drv, ifindex);
7639 #ifdef HOSTAPD
7640 if (type != WPA_IF_AP_BSS)
7641 return 0;
7643 if (bss != &drv->first_bss) {
7644 struct i802_bss *tbss;
7646 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
7647 if (tbss->next == bss) {
7648 tbss->next = bss->next;
7649 nl80211_destroy_bss(bss);
7650 os_free(bss);
7651 bss = NULL;
7652 break;
7653 }
7654 }
7655 if (bss)
7656 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
7657 "BSS %p in the list", __func__, bss);
7658 }
7659 #endif /* HOSTAPD */
7661 return 0;
7662 }
7665 static int cookie_handler(struct nl_msg *msg, void *arg)
7666 {
7667 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7668 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7669 u64 *cookie = arg;
7670 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7671 genlmsg_attrlen(gnlh, 0), NULL);
7672 if (tb[NL80211_ATTR_COOKIE])
7673 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
7674 return NL_SKIP;
7675 }
7678 static int nl80211_send_frame_cmd(struct i802_bss *bss,
7679 unsigned int freq, unsigned int wait,
7680 const u8 *buf, size_t buf_len,
7681 u64 *cookie_out, int no_cck, int no_ack,
7682 int offchanok)
7683 {
7684 struct wpa_driver_nl80211_data *drv = bss->drv;
7685 struct nl_msg *msg;
7686 u64 cookie;
7687 int ret = -1;
7689 msg = nlmsg_alloc();
7690 if (!msg)
7691 return -1;
7693 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
7695 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7696 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7697 if (wait)
7698 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
7699 if (offchanok)
7700 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
7701 if (no_cck)
7702 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
7703 if (no_ack)
7704 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
7706 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
7708 cookie = 0;
7709 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
7710 msg = NULL;
7711 if (ret) {
7712 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
7713 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
7714 freq, wait);
7715 goto nla_put_failure;
7716 }
7717 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
7718 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
7719 (long long unsigned int) cookie);
7721 if (cookie_out)
7722 *cookie_out = no_ack ? (u64) -1 : cookie;
7724 nla_put_failure:
7725 nlmsg_free(msg);
7726 return ret;
7727 }
7730 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
7731 unsigned int wait_time,
7732 const u8 *dst, const u8 *src,
7733 const u8 *bssid,
7734 const u8 *data, size_t data_len,
7735 int no_cck)
7736 {
7737 struct i802_bss *bss = priv;
7738 struct wpa_driver_nl80211_data *drv = bss->drv;
7739 int ret = -1;
7740 u8 *buf;
7741 struct ieee80211_hdr *hdr;
7743 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
7744 "wait=%d ms no_cck=%d)", drv->ifindex, wait_time, no_cck);
7746 buf = os_zalloc(24 + data_len);
7747 if (buf == NULL)
7748 return ret;
7749 os_memcpy(buf + 24, data, data_len);
7750 hdr = (struct ieee80211_hdr *) buf;
7751 hdr->frame_control =
7752 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
7753 os_memcpy(hdr->addr1, dst, ETH_ALEN);
7754 os_memcpy(hdr->addr2, src, ETH_ALEN);
7755 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
7757 if (is_ap_interface(drv->nlmode))
7758 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len,
7759 0);
7760 else
7761 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
7762 24 + data_len,
7763 &drv->send_action_cookie,
7764 no_cck, 0, 1);
7766 os_free(buf);
7767 return ret;
7768 }
7771 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
7772 {
7773 struct i802_bss *bss = priv;
7774 struct wpa_driver_nl80211_data *drv = bss->drv;
7775 struct nl_msg *msg;
7776 int ret;
7778 msg = nlmsg_alloc();
7779 if (!msg)
7780 return;
7782 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
7784 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7785 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
7787 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7788 msg = NULL;
7789 if (ret)
7790 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
7791 "(%s)", ret, strerror(-ret));
7793 nla_put_failure:
7794 nlmsg_free(msg);
7795 }
7798 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
7799 unsigned int duration)
7800 {
7801 struct i802_bss *bss = priv;
7802 struct wpa_driver_nl80211_data *drv = bss->drv;
7803 struct nl_msg *msg;
7804 int ret;
7805 u64 cookie;
7807 msg = nlmsg_alloc();
7808 if (!msg)
7809 return -1;
7811 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
7813 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7814 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7815 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7817 cookie = 0;
7818 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
7819 if (ret == 0) {
7820 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
7821 "0x%llx for freq=%u MHz duration=%u",
7822 (long long unsigned int) cookie, freq, duration);
7823 drv->remain_on_chan_cookie = cookie;
7824 drv->pending_remain_on_chan = 1;
7825 return 0;
7826 }
7827 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
7828 "(freq=%d duration=%u): %d (%s)",
7829 freq, duration, ret, strerror(-ret));
7830 nla_put_failure:
7831 return -1;
7832 }
7835 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
7836 {
7837 struct i802_bss *bss = priv;
7838 struct wpa_driver_nl80211_data *drv = bss->drv;
7839 struct nl_msg *msg;
7840 int ret;
7842 if (!drv->pending_remain_on_chan) {
7843 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7844 "to cancel");
7845 return -1;
7846 }
7848 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7849 "0x%llx",
7850 (long long unsigned int) drv->remain_on_chan_cookie);
7852 msg = nlmsg_alloc();
7853 if (!msg)
7854 return -1;
7856 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
7858 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7859 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
7861 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7862 if (ret == 0)
7863 return 0;
7864 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7865 "%d (%s)", ret, strerror(-ret));
7866 nla_put_failure:
7867 return -1;
7868 }
7871 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
7872 {
7873 struct i802_bss *bss = priv;
7874 struct wpa_driver_nl80211_data *drv = bss->drv;
7876 if (!report) {
7877 if (bss->nl_preq.handle) {
7878 eloop_unregister_read_sock(
7879 nl_socket_get_fd(bss->nl_preq.handle));
7880 nl_destroy_handles(&bss->nl_preq);
7881 }
7882 return 0;
7883 }
7885 if (bss->nl_preq.handle) {
7886 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7887 "already on!");
7888 return 0;
7889 }
7891 if (nl_create_handles(&bss->nl_preq, drv->global->nl_cb, "preq"))
7892 return -1;
7894 if (nl80211_register_frame(bss, bss->nl_preq.handle,
7895 (WLAN_FC_TYPE_MGMT << 2) |
7896 (WLAN_FC_STYPE_PROBE_REQ << 4),
7897 NULL, 0) < 0)
7898 goto out_err;
7900 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq.handle),
7901 wpa_driver_nl80211_event_receive, bss->nl_cb,
7902 bss->nl_preq.handle);
7904 return 0;
7906 out_err:
7907 nl_destroy_handles(&bss->nl_preq);
7908 return -1;
7909 }
7912 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7913 int ifindex, int disabled)
7914 {
7915 struct nl_msg *msg;
7916 struct nlattr *bands, *band;
7917 int ret;
7919 msg = nlmsg_alloc();
7920 if (!msg)
7921 return -1;
7923 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7924 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7926 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7927 if (!bands)
7928 goto nla_put_failure;
7930 /*
7931 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7932 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7933 * rates. All 5 GHz rates are left enabled.
7934 */
7935 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7936 if (!band)
7937 goto nla_put_failure;
7938 if (disabled) {
7939 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7940 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7941 }
7942 nla_nest_end(msg, band);
7944 nla_nest_end(msg, bands);
7946 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7947 msg = NULL;
7948 if (ret) {
7949 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7950 "(%s)", ret, strerror(-ret));
7951 }
7953 return ret;
7955 nla_put_failure:
7956 nlmsg_free(msg);
7957 return -1;
7958 }
7961 static int wpa_driver_nl80211_deinit_ap(void *priv)
7962 {
7963 struct i802_bss *bss = priv;
7964 struct wpa_driver_nl80211_data *drv = bss->drv;
7965 if (!is_ap_interface(drv->nlmode))
7966 return -1;
7967 wpa_driver_nl80211_del_beacon(drv);
7968 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7969 }
7972 static void wpa_driver_nl80211_resume(void *priv)
7973 {
7974 struct i802_bss *bss = priv;
7975 struct wpa_driver_nl80211_data *drv = bss->drv;
7976 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
7977 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
7978 "resume event");
7979 }
7980 }
7983 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7984 const u8 *ies, size_t ies_len)
7985 {
7986 struct i802_bss *bss = priv;
7987 struct wpa_driver_nl80211_data *drv = bss->drv;
7988 int ret;
7989 u8 *data, *pos;
7990 size_t data_len;
7991 u8 own_addr[ETH_ALEN];
7993 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7994 own_addr) < 0)
7995 return -1;
7997 if (action != 1) {
7998 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7999 "action %d", action);
8000 return -1;
8001 }
8003 /*
8004 * Action frame payload:
8005 * Category[1] = 6 (Fast BSS Transition)
8006 * Action[1] = 1 (Fast BSS Transition Request)
8007 * STA Address
8008 * Target AP Address
8009 * FT IEs
8010 */
8012 data_len = 2 + 2 * ETH_ALEN + ies_len;
8013 data = os_malloc(data_len);
8014 if (data == NULL)
8015 return -1;
8016 pos = data;
8017 *pos++ = 0x06; /* FT Action category */
8018 *pos++ = action;
8019 os_memcpy(pos, own_addr, ETH_ALEN);
8020 pos += ETH_ALEN;
8021 os_memcpy(pos, target_ap, ETH_ALEN);
8022 pos += ETH_ALEN;
8023 os_memcpy(pos, ies, ies_len);
8025 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
8026 drv->bssid, own_addr, drv->bssid,
8027 data, data_len, 0);
8028 os_free(data);
8030 return ret;
8031 }
8034 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
8035 {
8036 struct i802_bss *bss = priv;
8037 struct wpa_driver_nl80211_data *drv = bss->drv;
8038 struct nl_msg *msg, *cqm = NULL;
8040 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
8041 "hysteresis=%d", threshold, hysteresis);
8043 msg = nlmsg_alloc();
8044 if (!msg)
8045 return -1;
8047 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
8049 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8051 cqm = nlmsg_alloc();
8052 if (cqm == NULL)
8053 return -1;
8055 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
8056 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
8057 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
8059 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
8060 return 0;
8061 msg = NULL;
8063 nla_put_failure:
8064 if (cqm)
8065 nlmsg_free(cqm);
8066 nlmsg_free(msg);
8067 return -1;
8068 }
8071 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
8072 {
8073 struct i802_bss *bss = priv;
8074 struct wpa_driver_nl80211_data *drv = bss->drv;
8075 int res;
8077 os_memset(si, 0, sizeof(*si));
8078 res = nl80211_get_link_signal(drv, si);
8079 if (res != 0)
8080 return res;
8082 return nl80211_get_link_noise(drv, si);
8083 }
8086 static int wpa_driver_nl80211_shared_freq(void *priv)
8087 {
8088 struct i802_bss *bss = priv;
8089 struct wpa_driver_nl80211_data *drv = bss->drv;
8090 struct wpa_driver_nl80211_data *driver;
8091 int freq = 0;
8093 /*
8094 * If the same PHY is in connected state with some other interface,
8095 * then retrieve the assoc freq.
8096 */
8097 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
8098 drv->phyname);
8100 dl_list_for_each(driver, &drv->global->interfaces,
8101 struct wpa_driver_nl80211_data, list) {
8102 if (drv == driver ||
8103 os_strcmp(drv->phyname, driver->phyname) != 0 ||
8104 !driver->associated)
8105 continue;
8107 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
8108 MACSTR,
8109 driver->phyname, driver->first_bss.ifname,
8110 MAC2STR(driver->addr));
8111 freq = nl80211_get_assoc_freq(driver);
8112 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
8113 drv->phyname, freq);
8114 }
8116 if (!freq)
8117 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
8118 "PHY (%s) in associated state", drv->phyname);
8120 return freq;
8121 }
8124 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
8125 int encrypt)
8126 {
8127 struct i802_bss *bss = priv;
8128 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0);
8129 }
8132 static int nl80211_set_param(void *priv, const char *param)
8133 {
8134 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
8135 if (param == NULL)
8136 return 0;
8138 #ifdef CONFIG_P2P
8139 if (os_strstr(param, "use_p2p_group_interface=1")) {
8140 struct i802_bss *bss = priv;
8141 struct wpa_driver_nl80211_data *drv = bss->drv;
8143 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
8144 "interface");
8145 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
8146 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
8147 }
8148 #endif /* CONFIG_P2P */
8150 return 0;
8151 }
8154 static void * nl80211_global_init(void)
8155 {
8156 struct nl80211_global *global;
8157 struct netlink_config *cfg;
8159 global = os_zalloc(sizeof(*global));
8160 if (global == NULL)
8161 return NULL;
8162 global->ioctl_sock = -1;
8163 dl_list_init(&global->interfaces);
8164 global->if_add_ifindex = -1;
8166 cfg = os_zalloc(sizeof(*cfg));
8167 if (cfg == NULL)
8168 goto err;
8170 cfg->ctx = global;
8171 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
8172 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
8173 global->netlink = netlink_init(cfg);
8174 if (global->netlink == NULL) {
8175 os_free(cfg);
8176 goto err;
8177 }
8179 if (wpa_driver_nl80211_init_nl_global(global) < 0)
8180 goto err;
8182 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
8183 if (global->ioctl_sock < 0) {
8184 perror("socket(PF_INET,SOCK_DGRAM)");
8185 goto err;
8186 }
8188 return global;
8190 err:
8191 nl80211_global_deinit(global);
8192 return NULL;
8193 }
8196 static void nl80211_global_deinit(void *priv)
8197 {
8198 struct nl80211_global *global = priv;
8199 if (global == NULL)
8200 return;
8201 if (!dl_list_empty(&global->interfaces)) {
8202 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
8203 "nl80211_global_deinit",
8204 dl_list_len(&global->interfaces));
8205 }
8207 if (global->netlink)
8208 netlink_deinit(global->netlink);
8210 nl_destroy_handles(&global->nl);
8212 if (global->nl_event.handle) {
8213 eloop_unregister_read_sock(
8214 nl_socket_get_fd(global->nl_event.handle));
8215 nl_destroy_handles(&global->nl_event);
8216 }
8218 nl_cb_put(global->nl_cb);
8220 if (global->ioctl_sock >= 0)
8221 close(global->ioctl_sock);
8223 os_free(global);
8224 }
8227 static const char * nl80211_get_radio_name(void *priv)
8228 {
8229 struct i802_bss *bss = priv;
8230 struct wpa_driver_nl80211_data *drv = bss->drv;
8231 return drv->phyname;
8232 }
8235 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
8236 const u8 *pmkid)
8237 {
8238 struct nl_msg *msg;
8240 msg = nlmsg_alloc();
8241 if (!msg)
8242 return -ENOMEM;
8244 nl80211_cmd(bss->drv, msg, 0, cmd);
8246 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8247 if (pmkid)
8248 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
8249 if (bssid)
8250 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
8252 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8253 nla_put_failure:
8254 return -ENOBUFS;
8255 }
8258 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8259 {
8260 struct i802_bss *bss = priv;
8261 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
8262 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
8263 }
8266 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8267 {
8268 struct i802_bss *bss = priv;
8269 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
8270 MAC2STR(bssid));
8271 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
8272 }
8275 static int nl80211_flush_pmkid(void *priv)
8276 {
8277 struct i802_bss *bss = priv;
8278 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
8279 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
8280 }
8283 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
8284 const u8 *replay_ctr)
8285 {
8286 struct i802_bss *bss = priv;
8287 struct wpa_driver_nl80211_data *drv = bss->drv;
8288 struct nlattr *replay_nested;
8289 struct nl_msg *msg;
8291 msg = nlmsg_alloc();
8292 if (!msg)
8293 return;
8295 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8297 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8299 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8300 if (!replay_nested)
8301 goto nla_put_failure;
8303 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
8304 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
8305 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
8306 replay_ctr);
8308 nla_nest_end(msg, replay_nested);
8310 send_and_recv_msgs(drv, msg, NULL, NULL);
8311 return;
8312 nla_put_failure:
8313 nlmsg_free(msg);
8314 }
8317 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
8318 const u8 *addr, int qos)
8319 {
8320 /* send data frame to poll STA and check whether
8321 * this frame is ACKed */
8322 struct {
8323 struct ieee80211_hdr hdr;
8324 u16 qos_ctl;
8325 } STRUCT_PACKED nulldata;
8326 size_t size;
8328 /* Send data frame to poll STA and check whether this frame is ACKed */
8330 os_memset(&nulldata, 0, sizeof(nulldata));
8332 if (qos) {
8333 nulldata.hdr.frame_control =
8334 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8335 WLAN_FC_STYPE_QOS_NULL);
8336 size = sizeof(nulldata);
8337 } else {
8338 nulldata.hdr.frame_control =
8339 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8340 WLAN_FC_STYPE_NULLFUNC);
8341 size = sizeof(struct ieee80211_hdr);
8342 }
8344 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
8345 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8346 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8347 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8349 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
8350 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
8351 "send poll frame");
8352 }
8354 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
8355 int qos)
8356 {
8357 struct i802_bss *bss = priv;
8358 struct wpa_driver_nl80211_data *drv = bss->drv;
8359 struct nl_msg *msg;
8361 if (!drv->poll_command_supported) {
8362 nl80211_send_null_frame(bss, own_addr, addr, qos);
8363 return;
8364 }
8366 msg = nlmsg_alloc();
8367 if (!msg)
8368 return;
8370 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
8372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8373 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8375 send_and_recv_msgs(drv, msg, NULL, NULL);
8376 return;
8377 nla_put_failure:
8378 nlmsg_free(msg);
8379 }
8382 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
8383 {
8384 struct nl_msg *msg;
8386 msg = nlmsg_alloc();
8387 if (!msg)
8388 return -ENOMEM;
8390 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
8391 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8392 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
8393 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
8394 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8395 nla_put_failure:
8396 nlmsg_free(msg);
8397 return -ENOBUFS;
8398 }
8401 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
8402 int ctwindow)
8403 {
8404 struct i802_bss *bss = priv;
8406 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
8407 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
8409 if (opp_ps != -1 || ctwindow != -1)
8410 return -1; /* Not yet supported */
8412 if (legacy_ps == -1)
8413 return 0;
8414 if (legacy_ps != 0 && legacy_ps != 1)
8415 return -1; /* Not yet supported */
8417 return nl80211_set_power_save(bss, legacy_ps);
8418 }
8421 #ifdef CONFIG_TDLS
8423 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
8424 u8 dialog_token, u16 status_code,
8425 const u8 *buf, size_t len)
8426 {
8427 struct i802_bss *bss = priv;
8428 struct wpa_driver_nl80211_data *drv = bss->drv;
8429 struct nl_msg *msg;
8431 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8432 return -EOPNOTSUPP;
8434 if (!dst)
8435 return -EINVAL;
8437 msg = nlmsg_alloc();
8438 if (!msg)
8439 return -ENOMEM;
8441 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
8442 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8443 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
8444 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
8445 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
8446 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
8447 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
8449 return send_and_recv_msgs(drv, msg, NULL, NULL);
8451 nla_put_failure:
8452 nlmsg_free(msg);
8453 return -ENOBUFS;
8454 }
8457 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8458 {
8459 struct i802_bss *bss = priv;
8460 struct wpa_driver_nl80211_data *drv = bss->drv;
8461 struct nl_msg *msg;
8462 enum nl80211_tdls_operation nl80211_oper;
8464 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8465 return -EOPNOTSUPP;
8467 switch (oper) {
8468 case TDLS_DISCOVERY_REQ:
8469 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8470 break;
8471 case TDLS_SETUP:
8472 nl80211_oper = NL80211_TDLS_SETUP;
8473 break;
8474 case TDLS_TEARDOWN:
8475 nl80211_oper = NL80211_TDLS_TEARDOWN;
8476 break;
8477 case TDLS_ENABLE_LINK:
8478 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8479 break;
8480 case TDLS_DISABLE_LINK:
8481 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8482 break;
8483 case TDLS_ENABLE:
8484 return 0;
8485 case TDLS_DISABLE:
8486 return 0;
8487 default:
8488 return -EINVAL;
8489 }
8491 msg = nlmsg_alloc();
8492 if (!msg)
8493 return -ENOMEM;
8495 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8496 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8498 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8500 return send_and_recv_msgs(drv, msg, NULL, NULL);
8502 nla_put_failure:
8503 nlmsg_free(msg);
8504 return -ENOBUFS;
8505 }
8507 #endif /* CONFIG TDLS */
8510 #ifdef ANDROID
8512 typedef struct android_wifi_priv_cmd {
8513 char *buf;
8514 int used_len;
8515 int total_len;
8516 } android_wifi_priv_cmd;
8518 static int drv_errors = 0;
8520 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
8521 {
8522 drv_errors++;
8523 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
8524 drv_errors = 0;
8525 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8526 }
8527 }
8530 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
8531 {
8532 struct wpa_driver_nl80211_data *drv = bss->drv;
8533 struct ifreq ifr;
8534 android_wifi_priv_cmd priv_cmd;
8535 char buf[MAX_DRV_CMD_SIZE];
8536 int ret;
8538 os_memset(&ifr, 0, sizeof(ifr));
8539 os_memset(&priv_cmd, 0, sizeof(priv_cmd));
8540 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8542 os_memset(buf, 0, sizeof(buf));
8543 os_strlcpy(buf, cmd, sizeof(buf));
8545 priv_cmd.buf = buf;
8546 priv_cmd.used_len = sizeof(buf);
8547 priv_cmd.total_len = sizeof(buf);
8548 ifr.ifr_data = &priv_cmd;
8550 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8551 if (ret < 0) {
8552 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
8553 __func__);
8554 wpa_driver_send_hang_msg(drv);
8555 return ret;
8556 }
8558 drv_errors = 0;
8559 return 0;
8560 }
8563 static int android_pno_start(struct i802_bss *bss,
8564 struct wpa_driver_scan_params *params)
8565 {
8566 struct wpa_driver_nl80211_data *drv = bss->drv;
8567 struct ifreq ifr;
8568 android_wifi_priv_cmd priv_cmd;
8569 int ret = 0, i = 0, bp;
8570 char buf[WEXT_PNO_MAX_COMMAND_SIZE];
8572 bp = WEXT_PNOSETUP_HEADER_SIZE;
8573 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
8574 buf[bp++] = WEXT_PNO_TLV_PREFIX;
8575 buf[bp++] = WEXT_PNO_TLV_VERSION;
8576 buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
8577 buf[bp++] = WEXT_PNO_TLV_RESERVED;
8579 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
8580 /* Check that there is enough space needed for 1 more SSID, the
8581 * other sections and null termination */
8582 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
8583 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
8584 break;
8585 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
8586 ssid[i].ssid, ssid[i].ssid_len);
8587 buf[bp++] = WEXT_PNO_SSID_SECTION;
8588 buf[bp++] = params->ssids[i].ssid_len;
8589 os_memcpy(&buf[bp], params->ssids[i].ssid,
8590 params->ssids[i].ssid_len);
8591 bp += params->ssids[i].ssid_len;
8592 i++;
8593 }
8595 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
8596 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
8597 WEXT_PNO_SCAN_INTERVAL);
8598 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
8600 buf[bp++] = WEXT_PNO_REPEAT_SECTION;
8601 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
8602 WEXT_PNO_REPEAT);
8603 bp += WEXT_PNO_REPEAT_LENGTH;
8605 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
8606 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
8607 WEXT_PNO_MAX_REPEAT);
8608 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
8610 memset(&ifr, 0, sizeof(ifr));
8611 memset(&priv_cmd, 0, sizeof(priv_cmd));
8612 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8614 priv_cmd.buf = buf;
8615 priv_cmd.used_len = bp;
8616 priv_cmd.total_len = bp;
8617 ifr.ifr_data = &priv_cmd;
8619 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8621 if (ret < 0) {
8622 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
8623 ret);
8624 wpa_driver_send_hang_msg(drv);
8625 return ret;
8626 }
8628 drv_errors = 0;
8630 return android_priv_cmd(bss, "PNOFORCE 1");
8631 }
8634 static int android_pno_stop(struct i802_bss *bss)
8635 {
8636 return android_priv_cmd(bss, "PNOFORCE 0");
8637 }
8639 #endif /* ANDROID */
8642 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8643 .name = "nl80211",
8644 .desc = "Linux nl80211/cfg80211",
8645 .get_bssid = wpa_driver_nl80211_get_bssid,
8646 .get_ssid = wpa_driver_nl80211_get_ssid,
8647 .set_key = wpa_driver_nl80211_set_key,
8648 .scan2 = wpa_driver_nl80211_scan,
8649 .sched_scan = wpa_driver_nl80211_sched_scan,
8650 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8651 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8652 .deauthenticate = wpa_driver_nl80211_deauthenticate,
8653 .disassociate = wpa_driver_nl80211_disassociate,
8654 .authenticate = wpa_driver_nl80211_authenticate,
8655 .associate = wpa_driver_nl80211_associate,
8656 .global_init = nl80211_global_init,
8657 .global_deinit = nl80211_global_deinit,
8658 .init2 = wpa_driver_nl80211_init,
8659 .deinit = wpa_driver_nl80211_deinit,
8660 .get_capa = wpa_driver_nl80211_get_capa,
8661 .set_operstate = wpa_driver_nl80211_set_operstate,
8662 .set_supp_port = wpa_driver_nl80211_set_supp_port,
8663 .set_country = wpa_driver_nl80211_set_country,
8664 .set_ap = wpa_driver_nl80211_set_ap,
8665 .if_add = wpa_driver_nl80211_if_add,
8666 .if_remove = wpa_driver_nl80211_if_remove,
8667 .send_mlme = wpa_driver_nl80211_send_mlme,
8668 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
8669 .sta_add = wpa_driver_nl80211_sta_add,
8670 .sta_remove = wpa_driver_nl80211_sta_remove,
8671 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8672 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8673 #ifdef HOSTAPD
8674 .hapd_init = i802_init,
8675 .hapd_deinit = i802_deinit,
8676 .set_wds_sta = i802_set_wds_sta,
8677 #endif /* HOSTAPD */
8678 #if defined(HOSTAPD) || defined(CONFIG_AP)
8679 .get_seqnum = i802_get_seqnum,
8680 .flush = i802_flush,
8681 .read_sta_data = i802_read_sta_data,
8682 .get_inact_sec = i802_get_inact_sec,
8683 .sta_clear_stats = i802_sta_clear_stats,
8684 .set_rts = i802_set_rts,
8685 .set_frag = i802_set_frag,
8686 .set_tx_queue_params = i802_set_tx_queue_params,
8687 .set_sta_vlan = i802_set_sta_vlan,
8688 .sta_deauth = i802_sta_deauth,
8689 .sta_disassoc = i802_sta_disassoc,
8690 #endif /* HOSTAPD || CONFIG_AP */
8691 .set_freq = i802_set_freq,
8692 .send_action = wpa_driver_nl80211_send_action,
8693 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8694 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8695 .cancel_remain_on_channel =
8696 wpa_driver_nl80211_cancel_remain_on_channel,
8697 .probe_req_report = wpa_driver_nl80211_probe_req_report,
8698 .deinit_ap = wpa_driver_nl80211_deinit_ap,
8699 .resume = wpa_driver_nl80211_resume,
8700 .send_ft_action = nl80211_send_ft_action,
8701 .signal_monitor = nl80211_signal_monitor,
8702 .signal_poll = nl80211_signal_poll,
8703 .send_frame = nl80211_send_frame,
8704 .shared_freq = wpa_driver_nl80211_shared_freq,
8705 .set_param = nl80211_set_param,
8706 .get_radio_name = nl80211_get_radio_name,
8707 .add_pmkid = nl80211_add_pmkid,
8708 .remove_pmkid = nl80211_remove_pmkid,
8709 .flush_pmkid = nl80211_flush_pmkid,
8710 .set_rekey_info = nl80211_set_rekey_info,
8711 .poll_client = nl80211_poll_client,
8712 .set_p2p_powersave = nl80211_set_p2p_powersave,
8713 #ifdef CONFIG_TDLS
8714 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8715 .tdls_oper = nl80211_tdls_oper,
8716 #endif /* CONFIG_TDLS */
8717 };