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nl80211: Add no_ack support for NL80211_CMD_FRAME
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
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 */
18
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 "nl80211_copy.h"
32
33 #include "common.h"
34 #include "eloop.h"
35 #include "utils/list.h"
36 #include "common/ieee802_11_defs.h"
37 #include "common/ieee802_11_common.h"
38 #include "l2_packet/l2_packet.h"
39 #include "netlink.h"
40 #include "linux_ioctl.h"
41 #include "radiotap.h"
42 #include "radiotap_iter.h"
43 #include "rfkill.h"
44 #include "driver.h"
45
46 #ifdef CONFIG_LIBNL20
47 /* libnl 2.0 compatibility code */
48 #define nl_handle nl_sock
49 #define nl80211_handle_alloc nl_socket_alloc_cb
50 #define nl80211_handle_destroy nl_socket_free
51 #else
52 /*
53 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
54 * but when you free a socket again it will mess up its bitmap and
55 * and use the wrong number the next time it needs a socket ID.
56 * Therefore, we wrap the handle alloc/destroy and add our own pid
57 * accounting.
58 */
59 static uint32_t port_bitmap[32] = { 0 };
60
61 static struct nl_handle *nl80211_handle_alloc(void *cb)
62 {
63 struct nl_handle *handle;
64 uint32_t pid = getpid() & 0x3FFFFF;
65 int i;
66
67 handle = nl_handle_alloc_cb(cb);
68
69 for (i = 0; i < 1024; i++) {
70 if (port_bitmap[i / 32] & (1 << (i % 32)))
71 continue;
72 port_bitmap[i / 32] |= 1 << (i % 32);
73 pid += i << 22;
74 break;
75 }
76
77 nl_socket_set_local_port(handle, pid);
78
79 return handle;
80 }
81
82 static void nl80211_handle_destroy(struct nl_handle *handle)
83 {
84 uint32_t port = nl_socket_get_local_port(handle);
85
86 port >>= 22;
87 port_bitmap[port / 32] &= ~(1 << (port % 32));
88
89 nl_handle_destroy(handle);
90 }
91 #endif /* CONFIG_LIBNL20 */
92
93
94 struct nl80211_handles {
95 struct nl_handle *handle;
96 };
97
98
99 static int nl_create_handles(struct nl80211_handles *handles, struct nl_cb *cb,
100 const char *dbg)
101 {
102 if (!handles)
103 return -1;
104
105 handles->handle = nl80211_handle_alloc(cb);
106 if (handles->handle == NULL) {
107 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
108 "callbacks (%s)", dbg);
109 return -1;
110 }
111
112 if (genl_connect(handles->handle)) {
113 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
114 "netlink (%s)", dbg);
115 goto err;
116 }
117
118 return 0;
119 err:
120 nl80211_handle_destroy(handles->handle);
121 return -1;
122 }
123
124
125 static void nl_destroy_handles(struct nl80211_handles *handles)
126 {
127 if (handles->handle == NULL)
128 return;
129 nl80211_handle_destroy(handles->handle);
130 handles->handle = NULL;
131 }
132
133
134 #ifndef IFF_LOWER_UP
135 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
136 #endif
137 #ifndef IFF_DORMANT
138 #define IFF_DORMANT 0x20000 /* driver signals dormant */
139 #endif
140
141 #ifndef IF_OPER_DORMANT
142 #define IF_OPER_DORMANT 5
143 #endif
144 #ifndef IF_OPER_UP
145 #define IF_OPER_UP 6
146 #endif
147
148 struct nl80211_global {
149 struct dl_list interfaces;
150 int if_add_ifindex;
151 struct netlink_data *netlink;
152 struct nl_cb *nl_cb;
153 struct nl80211_handles nl;
154 int nl80211_id;
155 int ioctl_sock; /* socket for ioctl() use */
156 };
157
158 static void nl80211_global_deinit(void *priv);
159 static void wpa_driver_nl80211_deinit(void *priv);
160
161 struct i802_bss {
162 struct wpa_driver_nl80211_data *drv;
163 struct i802_bss *next;
164 int ifindex;
165 char ifname[IFNAMSIZ + 1];
166 char brname[IFNAMSIZ];
167 unsigned int beacon_set:1;
168 unsigned int added_if_into_bridge:1;
169 unsigned int added_bridge:1;
170 };
171
172 struct wpa_driver_nl80211_data {
173 struct nl80211_global *global;
174 struct dl_list list;
175 u8 addr[ETH_ALEN];
176 char phyname[32];
177 void *ctx;
178 int ifindex;
179 int if_removed;
180 int if_disabled;
181 int ignore_if_down_event;
182 struct rfkill_data *rfkill;
183 struct wpa_driver_capa capa;
184 int has_capability;
185
186 int operstate;
187
188 int scan_complete_events;
189
190 struct nl80211_handles nl_event, nl_preq;
191
192 u8 auth_bssid[ETH_ALEN];
193 u8 bssid[ETH_ALEN];
194 int associated;
195 u8 ssid[32];
196 size_t ssid_len;
197 enum nl80211_iftype nlmode;
198 enum nl80211_iftype ap_scan_as_station;
199 unsigned int assoc_freq;
200
201 int monitor_sock;
202 int monitor_ifidx;
203
204 unsigned int disabled_11b_rates:1;
205 unsigned int pending_remain_on_chan:1;
206 unsigned int in_interface_list:1;
207 unsigned int device_ap_sme:1;
208 unsigned int poll_command_supported:1;
209
210 u64 remain_on_chan_cookie;
211 u64 send_action_cookie;
212
213 unsigned int last_mgmt_freq;
214 unsigned int ap_oper_freq;
215
216 struct wpa_driver_scan_filter *filter_ssids;
217 size_t num_filter_ssids;
218
219 struct i802_bss first_bss;
220
221 #ifdef CONFIG_AP
222 int eapol_tx_sock;
223 #endif /* CONFIG_AP */
224
225 #ifdef HOSTAPD
226 int eapol_sock; /* socket for EAPOL frames */
227
228 int default_if_indices[16];
229 int *if_indices;
230 int num_if_indices;
231
232 int last_freq;
233 int last_freq_ht;
234 #endif /* HOSTAPD */
235 };
236
237
238 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
239 void *timeout_ctx);
240 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
241 enum nl80211_iftype nlmode);
242 static int
243 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
244 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
245 const u8 *addr, int cmd, u16 reason_code,
246 int local_state_change);
247 static void nl80211_remove_monitor_interface(
248 struct wpa_driver_nl80211_data *drv);
249 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
250 unsigned int freq, unsigned int wait,
251 const u8 *buf, size_t buf_len, u64 *cookie,
252 int no_cck, int no_ack);
253 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
254
255 #ifdef HOSTAPD
256 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
257 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
258 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
259 static int wpa_driver_nl80211_if_remove(void *priv,
260 enum wpa_driver_if_type type,
261 const char *ifname);
262 #else /* HOSTAPD */
263 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
264 {
265 }
266
267 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
268 {
269 }
270
271 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
272 {
273 return 0;
274 }
275 #endif /* HOSTAPD */
276
277 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
278 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
279 int ifindex, int disabled);
280
281 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
282
283
284 static int is_ap_interface(enum nl80211_iftype nlmode)
285 {
286 return (nlmode == NL80211_IFTYPE_AP ||
287 nlmode == NL80211_IFTYPE_P2P_GO);
288 }
289
290
291 static int is_sta_interface(enum nl80211_iftype nlmode)
292 {
293 return (nlmode == NL80211_IFTYPE_STATION ||
294 nlmode == NL80211_IFTYPE_P2P_CLIENT);
295 }
296
297
298 static int is_p2p_interface(enum nl80211_iftype nlmode)
299 {
300 return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
301 nlmode == NL80211_IFTYPE_P2P_GO);
302 }
303
304
305 struct nl80211_bss_info_arg {
306 struct wpa_driver_nl80211_data *drv;
307 struct wpa_scan_results *res;
308 unsigned int assoc_freq;
309 u8 assoc_bssid[ETH_ALEN];
310 };
311
312 static int bss_info_handler(struct nl_msg *msg, void *arg);
313
314
315 /* nl80211 code */
316 static int ack_handler(struct nl_msg *msg, void *arg)
317 {
318 int *err = arg;
319 *err = 0;
320 return NL_STOP;
321 }
322
323 static int finish_handler(struct nl_msg *msg, void *arg)
324 {
325 int *ret = arg;
326 *ret = 0;
327 return NL_SKIP;
328 }
329
330 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
331 void *arg)
332 {
333 int *ret = arg;
334 *ret = err->error;
335 return NL_SKIP;
336 }
337
338
339 static int no_seq_check(struct nl_msg *msg, void *arg)
340 {
341 return NL_OK;
342 }
343
344
345 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
346 struct nl_handle *nl_handle, struct nl_msg *msg,
347 int (*valid_handler)(struct nl_msg *, void *),
348 void *valid_data)
349 {
350 struct nl_cb *cb;
351 int err = -ENOMEM;
352
353 cb = nl_cb_clone(drv->global->nl_cb);
354 if (!cb)
355 goto out;
356
357 err = nl_send_auto_complete(nl_handle, msg);
358 if (err < 0)
359 goto out;
360
361 err = 1;
362
363 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
364 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
365 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
366
367 if (valid_handler)
368 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
369 valid_handler, valid_data);
370
371 while (err > 0)
372 nl_recvmsgs(nl_handle, cb);
373 out:
374 nl_cb_put(cb);
375 nlmsg_free(msg);
376 return err;
377 }
378
379
380 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
381 struct nl_msg *msg,
382 int (*valid_handler)(struct nl_msg *, void *),
383 void *valid_data)
384 {
385 return send_and_recv(drv, drv->global->nl.handle, msg, valid_handler,
386 valid_data);
387 }
388
389
390 struct family_data {
391 const char *group;
392 int id;
393 };
394
395
396 static int family_handler(struct nl_msg *msg, void *arg)
397 {
398 struct family_data *res = arg;
399 struct nlattr *tb[CTRL_ATTR_MAX + 1];
400 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
401 struct nlattr *mcgrp;
402 int i;
403
404 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
405 genlmsg_attrlen(gnlh, 0), NULL);
406 if (!tb[CTRL_ATTR_MCAST_GROUPS])
407 return NL_SKIP;
408
409 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
410 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
411 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
412 nla_len(mcgrp), NULL);
413 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
414 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
415 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
416 res->group,
417 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
418 continue;
419 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
420 break;
421 };
422
423 return NL_SKIP;
424 }
425
426
427 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
428 const char *family, const char *group)
429 {
430 struct nl_msg *msg;
431 int ret = -1;
432 struct family_data res = { group, -ENOENT };
433
434 msg = nlmsg_alloc();
435 if (!msg)
436 return -ENOMEM;
437 genlmsg_put(msg, 0, 0,
438 genl_ctrl_resolve(drv->global->nl.handle, "nlctrl"),
439 0, 0, CTRL_CMD_GETFAMILY, 0);
440 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
441
442 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
443 msg = NULL;
444 if (ret == 0)
445 ret = res.id;
446
447 nla_put_failure:
448 nlmsg_free(msg);
449 return ret;
450 }
451
452
453 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
454 struct nl_msg *msg, int flags, uint8_t cmd)
455 {
456 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
457 0, flags, cmd, 0);
458 }
459
460
461 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
462 {
463 struct i802_bss *bss = priv;
464 struct wpa_driver_nl80211_data *drv = bss->drv;
465 if (!drv->associated)
466 return -1;
467 os_memcpy(bssid, drv->bssid, ETH_ALEN);
468 return 0;
469 }
470
471
472 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
473 {
474 struct i802_bss *bss = priv;
475 struct wpa_driver_nl80211_data *drv = bss->drv;
476 if (!drv->associated)
477 return -1;
478 os_memcpy(ssid, drv->ssid, drv->ssid_len);
479 return drv->ssid_len;
480 }
481
482
483 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
484 char *buf, size_t len, int del)
485 {
486 union wpa_event_data event;
487
488 os_memset(&event, 0, sizeof(event));
489 if (len > sizeof(event.interface_status.ifname))
490 len = sizeof(event.interface_status.ifname) - 1;
491 os_memcpy(event.interface_status.ifname, buf, len);
492 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
493 EVENT_INTERFACE_ADDED;
494
495 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
496 del ? "DEL" : "NEW",
497 event.interface_status.ifname,
498 del ? "removed" : "added");
499
500 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
501 if (del)
502 drv->if_removed = 1;
503 else
504 drv->if_removed = 0;
505 }
506
507 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
508 }
509
510
511 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
512 u8 *buf, size_t len)
513 {
514 int attrlen, rta_len;
515 struct rtattr *attr;
516
517 attrlen = len;
518 attr = (struct rtattr *) buf;
519
520 rta_len = RTA_ALIGN(sizeof(struct rtattr));
521 while (RTA_OK(attr, attrlen)) {
522 if (attr->rta_type == IFLA_IFNAME) {
523 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
524 == 0)
525 return 1;
526 else
527 break;
528 }
529 attr = RTA_NEXT(attr, attrlen);
530 }
531
532 return 0;
533 }
534
535
536 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
537 int ifindex, u8 *buf, size_t len)
538 {
539 if (drv->ifindex == ifindex)
540 return 1;
541
542 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
543 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
544 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
545 "interface");
546 wpa_driver_nl80211_finish_drv_init(drv);
547 return 1;
548 }
549
550 return 0;
551 }
552
553
554 static struct wpa_driver_nl80211_data *
555 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
556 {
557 struct wpa_driver_nl80211_data *drv;
558 dl_list_for_each(drv, &global->interfaces,
559 struct wpa_driver_nl80211_data, list) {
560 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
561 have_ifidx(drv, idx))
562 return drv;
563 }
564 return NULL;
565 }
566
567
568 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
569 struct ifinfomsg *ifi,
570 u8 *buf, size_t len)
571 {
572 struct nl80211_global *global = ctx;
573 struct wpa_driver_nl80211_data *drv;
574 int attrlen, rta_len;
575 struct rtattr *attr;
576 u32 brid = 0;
577
578 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
579 if (!drv) {
580 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
581 "ifindex %d", ifi->ifi_index);
582 return;
583 }
584
585 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
586 "(%s%s%s%s)",
587 drv->operstate, ifi->ifi_flags,
588 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
589 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
590 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
591 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
592
593 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
594 char namebuf[IFNAMSIZ];
595 if (if_indextoname(ifi->ifi_index, namebuf) &&
596 linux_iface_up(drv->global->ioctl_sock,
597 drv->first_bss.ifname) > 0) {
598 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
599 "event since interface %s is up", namebuf);
600 return;
601 }
602 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
603 if (drv->ignore_if_down_event) {
604 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
605 "event generated by mode change");
606 drv->ignore_if_down_event = 0;
607 } else {
608 drv->if_disabled = 1;
609 wpa_supplicant_event(drv->ctx,
610 EVENT_INTERFACE_DISABLED, NULL);
611 }
612 }
613
614 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
615 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
616 drv->if_disabled = 0;
617 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
618 }
619
620 /*
621 * Some drivers send the association event before the operup event--in
622 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
623 * fails. This will hit us when wpa_supplicant does not need to do
624 * IEEE 802.1X authentication
625 */
626 if (drv->operstate == 1 &&
627 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
628 !(ifi->ifi_flags & IFF_RUNNING))
629 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
630 -1, IF_OPER_UP);
631
632 attrlen = len;
633 attr = (struct rtattr *) buf;
634 rta_len = RTA_ALIGN(sizeof(struct rtattr));
635 while (RTA_OK(attr, attrlen)) {
636 if (attr->rta_type == IFLA_IFNAME) {
637 wpa_driver_nl80211_event_link(
638 drv,
639 ((char *) attr) + rta_len,
640 attr->rta_len - rta_len, 0);
641 } else if (attr->rta_type == IFLA_MASTER)
642 brid = nla_get_u32((struct nlattr *) attr);
643 attr = RTA_NEXT(attr, attrlen);
644 }
645
646 if (ifi->ifi_family == AF_BRIDGE && brid) {
647 /* device has been added to bridge */
648 char namebuf[IFNAMSIZ];
649 if_indextoname(brid, namebuf);
650 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
651 brid, namebuf);
652 add_ifidx(drv, brid);
653 }
654 }
655
656
657 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
658 struct ifinfomsg *ifi,
659 u8 *buf, size_t len)
660 {
661 struct nl80211_global *global = ctx;
662 struct wpa_driver_nl80211_data *drv;
663 int attrlen, rta_len;
664 struct rtattr *attr;
665 u32 brid = 0;
666
667 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
668 if (!drv) {
669 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
670 "foreign ifindex %d", ifi->ifi_index);
671 return;
672 }
673
674 attrlen = len;
675 attr = (struct rtattr *) buf;
676
677 rta_len = RTA_ALIGN(sizeof(struct rtattr));
678 while (RTA_OK(attr, attrlen)) {
679 if (attr->rta_type == IFLA_IFNAME) {
680 wpa_driver_nl80211_event_link(
681 drv,
682 ((char *) attr) + rta_len,
683 attr->rta_len - rta_len, 1);
684 } else if (attr->rta_type == IFLA_MASTER)
685 brid = nla_get_u32((struct nlattr *) attr);
686 attr = RTA_NEXT(attr, attrlen);
687 }
688
689 if (ifi->ifi_family == AF_BRIDGE && brid) {
690 /* device has been removed from bridge */
691 char namebuf[IFNAMSIZ];
692 if_indextoname(brid, namebuf);
693 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
694 "%s", brid, namebuf);
695 del_ifidx(drv, brid);
696 }
697 }
698
699
700 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
701 const u8 *frame, size_t len)
702 {
703 const struct ieee80211_mgmt *mgmt;
704 union wpa_event_data event;
705
706 mgmt = (const struct ieee80211_mgmt *) frame;
707 if (len < 24 + sizeof(mgmt->u.auth)) {
708 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
709 "frame");
710 return;
711 }
712
713 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
714 os_memset(&event, 0, sizeof(event));
715 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
716 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
717 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
718 if (len > 24 + sizeof(mgmt->u.auth)) {
719 event.auth.ies = mgmt->u.auth.variable;
720 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
721 }
722
723 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
724 }
725
726
727 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
728 {
729 struct nl_msg *msg;
730 int ret;
731 struct nl80211_bss_info_arg arg;
732
733 os_memset(&arg, 0, sizeof(arg));
734 msg = nlmsg_alloc();
735 if (!msg)
736 goto nla_put_failure;
737
738 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
739 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
740
741 arg.drv = drv;
742 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
743 msg = NULL;
744 if (ret == 0) {
745 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
746 "associated BSS from scan results: %u MHz",
747 arg.assoc_freq);
748 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
749 }
750 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
751 "(%s)", ret, strerror(-ret));
752 nla_put_failure:
753 nlmsg_free(msg);
754 return drv->assoc_freq;
755 }
756
757
758 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
759 const u8 *frame, size_t len)
760 {
761 const struct ieee80211_mgmt *mgmt;
762 union wpa_event_data event;
763 u16 status;
764
765 mgmt = (const struct ieee80211_mgmt *) frame;
766 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
767 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
768 "frame");
769 return;
770 }
771
772 status = le_to_host16(mgmt->u.assoc_resp.status_code);
773 if (status != WLAN_STATUS_SUCCESS) {
774 os_memset(&event, 0, sizeof(event));
775 event.assoc_reject.bssid = mgmt->bssid;
776 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
777 event.assoc_reject.resp_ies =
778 (u8 *) mgmt->u.assoc_resp.variable;
779 event.assoc_reject.resp_ies_len =
780 len - 24 - sizeof(mgmt->u.assoc_resp);
781 }
782 event.assoc_reject.status_code = status;
783
784 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
785 return;
786 }
787
788 drv->associated = 1;
789 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
790
791 os_memset(&event, 0, sizeof(event));
792 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
793 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
794 event.assoc_info.resp_ies_len =
795 len - 24 - sizeof(mgmt->u.assoc_resp);
796 }
797
798 event.assoc_info.freq = drv->assoc_freq;
799
800 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
801 }
802
803
804 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
805 enum nl80211_commands cmd, struct nlattr *status,
806 struct nlattr *addr, struct nlattr *req_ie,
807 struct nlattr *resp_ie)
808 {
809 union wpa_event_data event;
810
811 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
812 /*
813 * Avoid reporting two association events that would confuse
814 * the core code.
815 */
816 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
817 "when using userspace SME", cmd);
818 return;
819 }
820
821 os_memset(&event, 0, sizeof(event));
822 if (cmd == NL80211_CMD_CONNECT &&
823 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
824 if (addr)
825 event.assoc_reject.bssid = nla_data(addr);
826 if (resp_ie) {
827 event.assoc_reject.resp_ies = nla_data(resp_ie);
828 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
829 }
830 event.assoc_reject.status_code = nla_get_u16(status);
831 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
832 return;
833 }
834
835 drv->associated = 1;
836 if (addr)
837 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
838
839 if (req_ie) {
840 event.assoc_info.req_ies = nla_data(req_ie);
841 event.assoc_info.req_ies_len = nla_len(req_ie);
842 }
843 if (resp_ie) {
844 event.assoc_info.resp_ies = nla_data(resp_ie);
845 event.assoc_info.resp_ies_len = nla_len(resp_ie);
846 }
847
848 event.assoc_info.freq = nl80211_get_assoc_freq(drv);
849
850 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
851 }
852
853
854 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
855 struct nlattr *reason, struct nlattr *addr)
856 {
857 union wpa_event_data data;
858
859 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
860 /*
861 * Avoid reporting two disassociation events that could
862 * confuse the core code.
863 */
864 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
865 "event when using userspace SME");
866 return;
867 }
868
869 drv->associated = 0;
870 os_memset(&data, 0, sizeof(data));
871 if (reason)
872 data.disassoc_info.reason_code = nla_get_u16(reason);
873 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
874 }
875
876
877 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
878 enum nl80211_commands cmd, struct nlattr *addr)
879 {
880 union wpa_event_data event;
881 enum wpa_event_type ev;
882
883 if (nla_len(addr) != ETH_ALEN)
884 return;
885
886 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
887 cmd, MAC2STR((u8 *) nla_data(addr)));
888
889 if (cmd == NL80211_CMD_AUTHENTICATE)
890 ev = EVENT_AUTH_TIMED_OUT;
891 else if (cmd == NL80211_CMD_ASSOCIATE)
892 ev = EVENT_ASSOC_TIMED_OUT;
893 else
894 return;
895
896 os_memset(&event, 0, sizeof(event));
897 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
898 wpa_supplicant_event(drv->ctx, ev, &event);
899 }
900
901
902 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
903 struct nlattr *freq, const u8 *frame, size_t len)
904 {
905 const struct ieee80211_mgmt *mgmt;
906 union wpa_event_data event;
907 u16 fc, stype;
908
909 mgmt = (const struct ieee80211_mgmt *) frame;
910 if (len < 24) {
911 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
912 return;
913 }
914
915 fc = le_to_host16(mgmt->frame_control);
916 stype = WLAN_FC_GET_STYPE(fc);
917
918 os_memset(&event, 0, sizeof(event));
919 if (freq) {
920 event.rx_action.freq = nla_get_u32(freq);
921 drv->last_mgmt_freq = event.rx_action.freq;
922 }
923 if (stype == WLAN_FC_STYPE_ACTION) {
924 event.rx_action.da = mgmt->da;
925 event.rx_action.sa = mgmt->sa;
926 event.rx_action.bssid = mgmt->bssid;
927 event.rx_action.category = mgmt->u.action.category;
928 event.rx_action.data = &mgmt->u.action.category + 1;
929 event.rx_action.len = frame + len - event.rx_action.data;
930 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
931 } else {
932 event.rx_mgmt.frame = frame;
933 event.rx_mgmt.frame_len = len;
934 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
935 }
936 }
937
938
939 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
940 struct nlattr *cookie, const u8 *frame,
941 size_t len, struct nlattr *ack)
942 {
943 union wpa_event_data event;
944 const struct ieee80211_hdr *hdr;
945 u16 fc;
946 u64 cookie_val;
947
948 if (!cookie)
949 return;
950
951 cookie_val = nla_get_u64(cookie);
952 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
953 "(ack=%d)",
954 (long long unsigned int) cookie_val,
955 cookie_val == drv->send_action_cookie ?
956 " (match)" : " (unknown)", ack != NULL);
957 if (cookie_val != drv->send_action_cookie)
958 return;
959
960 hdr = (const struct ieee80211_hdr *) frame;
961 fc = le_to_host16(hdr->frame_control);
962
963 os_memset(&event, 0, sizeof(event));
964 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
965 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
966 event.tx_status.dst = hdr->addr1;
967 event.tx_status.data = frame;
968 event.tx_status.data_len = len;
969 event.tx_status.ack = ack != NULL;
970 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
971 }
972
973
974 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
975 enum wpa_event_type type,
976 const u8 *frame, size_t len)
977 {
978 const struct ieee80211_mgmt *mgmt;
979 union wpa_event_data event;
980 const u8 *bssid = NULL;
981 u16 reason_code = 0;
982
983 mgmt = (const struct ieee80211_mgmt *) frame;
984 if (len >= 24) {
985 bssid = mgmt->bssid;
986
987 if (drv->associated != 0 &&
988 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
989 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
990 /*
991 * We have presumably received this deauth as a
992 * response to a clear_state_mismatch() outgoing
993 * deauth. Don't let it take us offline!
994 */
995 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
996 "from Unknown BSSID " MACSTR " -- ignoring",
997 MAC2STR(bssid));
998 return;
999 }
1000 }
1001
1002 drv->associated = 0;
1003 os_memset(&event, 0, sizeof(event));
1004
1005 /* Note: Same offset for Reason Code in both frame subtypes */
1006 if (len >= 24 + sizeof(mgmt->u.deauth))
1007 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1008
1009 if (type == EVENT_DISASSOC) {
1010 event.disassoc_info.addr = bssid;
1011 event.disassoc_info.reason_code = reason_code;
1012 if (frame + len > mgmt->u.disassoc.variable) {
1013 event.disassoc_info.ie = mgmt->u.disassoc.variable;
1014 event.disassoc_info.ie_len = frame + len -
1015 mgmt->u.disassoc.variable;
1016 }
1017 } else {
1018 event.deauth_info.addr = bssid;
1019 event.deauth_info.reason_code = reason_code;
1020 if (frame + len > mgmt->u.deauth.variable) {
1021 event.deauth_info.ie = mgmt->u.deauth.variable;
1022 event.deauth_info.ie_len = frame + len -
1023 mgmt->u.deauth.variable;
1024 }
1025 }
1026
1027 wpa_supplicant_event(drv->ctx, type, &event);
1028 }
1029
1030
1031 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1032 enum wpa_event_type type,
1033 const u8 *frame, size_t len)
1034 {
1035 const struct ieee80211_mgmt *mgmt;
1036 union wpa_event_data event;
1037 u16 reason_code = 0;
1038
1039 if (len < 24)
1040 return;
1041
1042 mgmt = (const struct ieee80211_mgmt *) frame;
1043
1044 os_memset(&event, 0, sizeof(event));
1045 /* Note: Same offset for Reason Code in both frame subtypes */
1046 if (len >= 24 + sizeof(mgmt->u.deauth))
1047 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1048
1049 if (type == EVENT_UNPROT_DISASSOC) {
1050 event.unprot_disassoc.sa = mgmt->sa;
1051 event.unprot_disassoc.da = mgmt->da;
1052 event.unprot_disassoc.reason_code = reason_code;
1053 } else {
1054 event.unprot_deauth.sa = mgmt->sa;
1055 event.unprot_deauth.da = mgmt->da;
1056 event.unprot_deauth.reason_code = reason_code;
1057 }
1058
1059 wpa_supplicant_event(drv->ctx, type, &event);
1060 }
1061
1062
1063 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1064 enum nl80211_commands cmd, struct nlattr *frame,
1065 struct nlattr *addr, struct nlattr *timed_out,
1066 struct nlattr *freq, struct nlattr *ack,
1067 struct nlattr *cookie)
1068 {
1069 if (timed_out && addr) {
1070 mlme_timeout_event(drv, cmd, addr);
1071 return;
1072 }
1073
1074 if (frame == NULL) {
1075 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1076 "data", cmd);
1077 return;
1078 }
1079
1080 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1081 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1082 nla_data(frame), nla_len(frame));
1083
1084 switch (cmd) {
1085 case NL80211_CMD_AUTHENTICATE:
1086 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1087 break;
1088 case NL80211_CMD_ASSOCIATE:
1089 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1090 break;
1091 case NL80211_CMD_DEAUTHENTICATE:
1092 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1093 nla_data(frame), nla_len(frame));
1094 break;
1095 case NL80211_CMD_DISASSOCIATE:
1096 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1097 nla_data(frame), nla_len(frame));
1098 break;
1099 case NL80211_CMD_FRAME:
1100 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
1101 break;
1102 case NL80211_CMD_FRAME_TX_STATUS:
1103 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
1104 nla_len(frame), ack);
1105 break;
1106 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1107 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1108 nla_data(frame), nla_len(frame));
1109 break;
1110 case NL80211_CMD_UNPROT_DISASSOCIATE:
1111 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1112 nla_data(frame), nla_len(frame));
1113 break;
1114 default:
1115 break;
1116 }
1117 }
1118
1119
1120 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1121 struct nlattr *tb[])
1122 {
1123 union wpa_event_data data;
1124
1125 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1126 os_memset(&data, 0, sizeof(data));
1127 if (tb[NL80211_ATTR_MAC]) {
1128 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1129 nla_data(tb[NL80211_ATTR_MAC]),
1130 nla_len(tb[NL80211_ATTR_MAC]));
1131 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1132 }
1133 if (tb[NL80211_ATTR_KEY_SEQ]) {
1134 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1135 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1136 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1137 }
1138 if (tb[NL80211_ATTR_KEY_TYPE]) {
1139 enum nl80211_key_type key_type =
1140 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1141 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1142 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1143 data.michael_mic_failure.unicast = 1;
1144 } else
1145 data.michael_mic_failure.unicast = 1;
1146
1147 if (tb[NL80211_ATTR_KEY_IDX]) {
1148 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1149 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1150 }
1151
1152 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1153 }
1154
1155
1156 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1157 struct nlattr *tb[])
1158 {
1159 if (tb[NL80211_ATTR_MAC] == NULL) {
1160 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1161 "event");
1162 return;
1163 }
1164 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1165 drv->associated = 1;
1166 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1167 MAC2STR(drv->bssid));
1168
1169 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1170 }
1171
1172
1173 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1174 int cancel_event, struct nlattr *tb[])
1175 {
1176 unsigned int freq, chan_type, duration;
1177 union wpa_event_data data;
1178 u64 cookie;
1179
1180 if (tb[NL80211_ATTR_WIPHY_FREQ])
1181 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1182 else
1183 freq = 0;
1184
1185 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1186 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1187 else
1188 chan_type = 0;
1189
1190 if (tb[NL80211_ATTR_DURATION])
1191 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1192 else
1193 duration = 0;
1194
1195 if (tb[NL80211_ATTR_COOKIE])
1196 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1197 else
1198 cookie = 0;
1199
1200 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1201 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1202 cancel_event, freq, chan_type, duration,
1203 (long long unsigned int) cookie,
1204 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1205
1206 if (cookie != drv->remain_on_chan_cookie)
1207 return; /* not for us */
1208
1209 if (cancel_event)
1210 drv->pending_remain_on_chan = 0;
1211
1212 os_memset(&data, 0, sizeof(data));
1213 data.remain_on_channel.freq = freq;
1214 data.remain_on_channel.duration = duration;
1215 wpa_supplicant_event(drv->ctx, cancel_event ?
1216 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1217 EVENT_REMAIN_ON_CHANNEL, &data);
1218 }
1219
1220
1221 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1222 struct nlattr *tb[])
1223 {
1224 union wpa_event_data event;
1225 struct nlattr *nl;
1226 int rem;
1227 struct scan_info *info;
1228 #define MAX_REPORT_FREQS 50
1229 int freqs[MAX_REPORT_FREQS];
1230 int num_freqs = 0;
1231
1232 os_memset(&event, 0, sizeof(event));
1233 info = &event.scan_info;
1234 info->aborted = aborted;
1235
1236 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1237 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1238 struct wpa_driver_scan_ssid *s =
1239 &info->ssids[info->num_ssids];
1240 s->ssid = nla_data(nl);
1241 s->ssid_len = nla_len(nl);
1242 info->num_ssids++;
1243 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1244 break;
1245 }
1246 }
1247 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1248 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1249 {
1250 freqs[num_freqs] = nla_get_u32(nl);
1251 num_freqs++;
1252 if (num_freqs == MAX_REPORT_FREQS - 1)
1253 break;
1254 }
1255 info->freqs = freqs;
1256 info->num_freqs = num_freqs;
1257 }
1258 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1259 }
1260
1261
1262 static int get_link_signal(struct nl_msg *msg, void *arg)
1263 {
1264 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1265 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1266 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1267 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1268 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1269 };
1270 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1271 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1272 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1273 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1274 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1275 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1276 };
1277 struct wpa_signal_info *sig_change = arg;
1278
1279 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1280 genlmsg_attrlen(gnlh, 0), NULL);
1281 if (!tb[NL80211_ATTR_STA_INFO] ||
1282 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1283 tb[NL80211_ATTR_STA_INFO], policy))
1284 return NL_SKIP;
1285 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1286 return NL_SKIP;
1287
1288 sig_change->current_signal =
1289 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1290
1291 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1292 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1293 sinfo[NL80211_STA_INFO_TX_BITRATE],
1294 rate_policy)) {
1295 sig_change->current_txrate = 0;
1296 } else {
1297 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1298 sig_change->current_txrate =
1299 nla_get_u16(rinfo[
1300 NL80211_RATE_INFO_BITRATE]) * 100;
1301 }
1302 }
1303 }
1304
1305 return NL_SKIP;
1306 }
1307
1308
1309 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1310 struct wpa_signal_info *sig)
1311 {
1312 struct nl_msg *msg;
1313
1314 sig->current_signal = -9999;
1315 sig->current_txrate = 0;
1316
1317 msg = nlmsg_alloc();
1318 if (!msg)
1319 return -ENOMEM;
1320
1321 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1322
1323 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1324 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1325
1326 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1327 nla_put_failure:
1328 return -ENOBUFS;
1329 }
1330
1331
1332 static int get_link_noise(struct nl_msg *msg, void *arg)
1333 {
1334 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1335 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1336 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1337 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1338 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1339 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1340 };
1341 struct wpa_signal_info *sig_change = arg;
1342
1343 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1344 genlmsg_attrlen(gnlh, 0), NULL);
1345
1346 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1347 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1348 return NL_SKIP;
1349 }
1350
1351 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1352 tb[NL80211_ATTR_SURVEY_INFO],
1353 survey_policy)) {
1354 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1355 "attributes!");
1356 return NL_SKIP;
1357 }
1358
1359 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1360 return NL_SKIP;
1361
1362 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1363 sig_change->frequency)
1364 return NL_SKIP;
1365
1366 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1367 return NL_SKIP;
1368
1369 sig_change->current_noise =
1370 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1371
1372 return NL_SKIP;
1373 }
1374
1375
1376 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1377 struct wpa_signal_info *sig_change)
1378 {
1379 struct nl_msg *msg;
1380
1381 sig_change->current_noise = 9999;
1382 sig_change->frequency = drv->assoc_freq;
1383
1384 msg = nlmsg_alloc();
1385 if (!msg)
1386 return -ENOMEM;
1387
1388 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1389
1390 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1391
1392 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1393 nla_put_failure:
1394 return -ENOBUFS;
1395 }
1396
1397
1398 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1399 {
1400 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1401 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1402 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1403 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1404 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1405 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1406 };
1407 struct wpa_scan_results *scan_results = arg;
1408 struct wpa_scan_res *scan_res;
1409 size_t i;
1410
1411 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1412 genlmsg_attrlen(gnlh, 0), NULL);
1413
1414 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1415 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1416 return NL_SKIP;
1417 }
1418
1419 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1420 tb[NL80211_ATTR_SURVEY_INFO],
1421 survey_policy)) {
1422 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1423 "attributes");
1424 return NL_SKIP;
1425 }
1426
1427 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1428 return NL_SKIP;
1429
1430 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1431 return NL_SKIP;
1432
1433 for (i = 0; i < scan_results->num; ++i) {
1434 scan_res = scan_results->res[i];
1435 if (!scan_res)
1436 continue;
1437 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1438 scan_res->freq)
1439 continue;
1440 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1441 continue;
1442 scan_res->noise = (s8)
1443 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1444 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1445 }
1446
1447 return NL_SKIP;
1448 }
1449
1450
1451 static int nl80211_get_noise_for_scan_results(
1452 struct wpa_driver_nl80211_data *drv,
1453 struct wpa_scan_results *scan_res)
1454 {
1455 struct nl_msg *msg;
1456
1457 msg = nlmsg_alloc();
1458 if (!msg)
1459 return -ENOMEM;
1460
1461 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1462
1463 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1464
1465 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1466 scan_res);
1467 nla_put_failure:
1468 return -ENOBUFS;
1469 }
1470
1471
1472 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1473 struct nlattr *tb[])
1474 {
1475 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1476 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1477 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1478 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1479 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1480 };
1481 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1482 enum nl80211_cqm_rssi_threshold_event event;
1483 union wpa_event_data ed;
1484 struct wpa_signal_info sig;
1485 int res;
1486
1487 if (tb[NL80211_ATTR_CQM] == NULL ||
1488 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1489 cqm_policy)) {
1490 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1491 return;
1492 }
1493
1494 os_memset(&ed, 0, sizeof(ed));
1495
1496 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1497 if (!tb[NL80211_ATTR_MAC])
1498 return;
1499 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1500 ETH_ALEN);
1501 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1502 return;
1503 }
1504
1505 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1506 return;
1507 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1508
1509 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1510 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1511 "event: RSSI high");
1512 ed.signal_change.above_threshold = 1;
1513 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1514 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1515 "event: RSSI low");
1516 ed.signal_change.above_threshold = 0;
1517 } else
1518 return;
1519
1520 res = nl80211_get_link_signal(drv, &sig);
1521 if (res == 0) {
1522 ed.signal_change.current_signal = sig.current_signal;
1523 ed.signal_change.current_txrate = sig.current_txrate;
1524 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1525 sig.current_signal, sig.current_txrate);
1526 }
1527
1528 res = nl80211_get_link_noise(drv, &sig);
1529 if (res == 0) {
1530 ed.signal_change.current_noise = sig.current_noise;
1531 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1532 sig.current_noise);
1533 }
1534
1535 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1536 }
1537
1538
1539 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1540 struct nlattr **tb)
1541 {
1542 u8 *addr;
1543 union wpa_event_data data;
1544
1545 if (tb[NL80211_ATTR_MAC] == NULL)
1546 return;
1547 addr = nla_data(tb[NL80211_ATTR_MAC]);
1548 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1549
1550 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1551 u8 *ies = NULL;
1552 size_t ies_len = 0;
1553 if (tb[NL80211_ATTR_IE]) {
1554 ies = nla_data(tb[NL80211_ATTR_IE]);
1555 ies_len = nla_len(tb[NL80211_ATTR_IE]);
1556 }
1557 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1558 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1559 return;
1560 }
1561
1562 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1563 return;
1564
1565 os_memset(&data, 0, sizeof(data));
1566 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1567 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1568 }
1569
1570
1571 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1572 struct nlattr **tb)
1573 {
1574 u8 *addr;
1575 union wpa_event_data data;
1576
1577 if (tb[NL80211_ATTR_MAC] == NULL)
1578 return;
1579 addr = nla_data(tb[NL80211_ATTR_MAC]);
1580 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1581 MAC2STR(addr));
1582
1583 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1584 drv_event_disassoc(drv->ctx, addr);
1585 return;
1586 }
1587
1588 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1589 return;
1590
1591 os_memset(&data, 0, sizeof(data));
1592 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1593 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1594 }
1595
1596
1597 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1598 struct nlattr **tb)
1599 {
1600 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1601 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1602 [NL80211_REKEY_DATA_KEK] = {
1603 .minlen = NL80211_KEK_LEN,
1604 .maxlen = NL80211_KEK_LEN,
1605 },
1606 [NL80211_REKEY_DATA_KCK] = {
1607 .minlen = NL80211_KCK_LEN,
1608 .maxlen = NL80211_KCK_LEN,
1609 },
1610 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1611 .minlen = NL80211_REPLAY_CTR_LEN,
1612 .maxlen = NL80211_REPLAY_CTR_LEN,
1613 },
1614 };
1615 union wpa_event_data data;
1616
1617 if (!tb[NL80211_ATTR_MAC])
1618 return;
1619 if (!tb[NL80211_ATTR_REKEY_DATA])
1620 return;
1621 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
1622 tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
1623 return;
1624 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
1625 return;
1626
1627 os_memset(&data, 0, sizeof(data));
1628 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
1629 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
1630 MAC2STR(data.driver_gtk_rekey.bssid));
1631 data.driver_gtk_rekey.replay_ctr =
1632 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
1633 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
1634 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
1635 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
1636 }
1637
1638
1639 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
1640 struct nlattr **tb)
1641 {
1642 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
1643 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
1644 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
1645 [NL80211_PMKSA_CANDIDATE_BSSID] = {
1646 .minlen = ETH_ALEN,
1647 .maxlen = ETH_ALEN,
1648 },
1649 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
1650 };
1651 union wpa_event_data data;
1652
1653 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
1654 return;
1655 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
1656 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
1657 return;
1658 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
1659 !cand[NL80211_PMKSA_CANDIDATE_BSSID])
1660 return;
1661
1662 os_memset(&data, 0, sizeof(data));
1663 os_memcpy(data.pmkid_candidate.bssid,
1664 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
1665 data.pmkid_candidate.index =
1666 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
1667 data.pmkid_candidate.preauth =
1668 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
1669 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
1670 }
1671
1672
1673 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
1674 struct nlattr **tb)
1675 {
1676 union wpa_event_data data;
1677
1678 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
1679 return;
1680
1681 os_memset(&data, 0, sizeof(data));
1682 os_memcpy(data.client_poll.addr,
1683 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1684
1685 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
1686 }
1687
1688
1689 static int process_event(struct nl_msg *msg, void *arg)
1690 {
1691 struct wpa_driver_nl80211_data *drv = arg;
1692 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1693 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1694
1695 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1696 genlmsg_attrlen(gnlh, 0), NULL);
1697
1698 if (tb[NL80211_ATTR_IFINDEX]) {
1699 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1700 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1701 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1702 " for foreign interface (ifindex %d)",
1703 gnlh->cmd, ifindex);
1704 return NL_SKIP;
1705 }
1706 }
1707
1708 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
1709 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1710 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1711 wpa_driver_nl80211_set_mode(&drv->first_bss,
1712 drv->ap_scan_as_station);
1713 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1714 }
1715
1716 switch (gnlh->cmd) {
1717 case NL80211_CMD_TRIGGER_SCAN:
1718 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1719 break;
1720 case NL80211_CMD_START_SCHED_SCAN:
1721 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
1722 break;
1723 case NL80211_CMD_SCHED_SCAN_STOPPED:
1724 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
1725 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
1726 break;
1727 case NL80211_CMD_NEW_SCAN_RESULTS:
1728 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1729 drv->scan_complete_events = 1;
1730 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1731 drv->ctx);
1732 send_scan_event(drv, 0, tb);
1733 break;
1734 case NL80211_CMD_SCHED_SCAN_RESULTS:
1735 wpa_printf(MSG_DEBUG,
1736 "nl80211: New sched scan results available");
1737 send_scan_event(drv, 0, tb);
1738 break;
1739 case NL80211_CMD_SCAN_ABORTED:
1740 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1741 /*
1742 * Need to indicate that scan results are available in order
1743 * not to make wpa_supplicant stop its scanning.
1744 */
1745 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1746 drv->ctx);
1747 send_scan_event(drv, 1, tb);
1748 break;
1749 case NL80211_CMD_AUTHENTICATE:
1750 case NL80211_CMD_ASSOCIATE:
1751 case NL80211_CMD_DEAUTHENTICATE:
1752 case NL80211_CMD_DISASSOCIATE:
1753 case NL80211_CMD_FRAME:
1754 case NL80211_CMD_FRAME_TX_STATUS:
1755 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1756 case NL80211_CMD_UNPROT_DISASSOCIATE:
1757 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1758 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1759 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1760 tb[NL80211_ATTR_COOKIE]);
1761 break;
1762 case NL80211_CMD_CONNECT:
1763 case NL80211_CMD_ROAM:
1764 mlme_event_connect(drv, gnlh->cmd,
1765 tb[NL80211_ATTR_STATUS_CODE],
1766 tb[NL80211_ATTR_MAC],
1767 tb[NL80211_ATTR_REQ_IE],
1768 tb[NL80211_ATTR_RESP_IE]);
1769 break;
1770 case NL80211_CMD_DISCONNECT:
1771 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
1772 tb[NL80211_ATTR_MAC]);
1773 break;
1774 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1775 mlme_event_michael_mic_failure(drv, tb);
1776 break;
1777 case NL80211_CMD_JOIN_IBSS:
1778 mlme_event_join_ibss(drv, tb);
1779 break;
1780 case NL80211_CMD_REMAIN_ON_CHANNEL:
1781 mlme_event_remain_on_channel(drv, 0, tb);
1782 break;
1783 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1784 mlme_event_remain_on_channel(drv, 1, tb);
1785 break;
1786 case NL80211_CMD_NOTIFY_CQM:
1787 nl80211_cqm_event(drv, tb);
1788 break;
1789 case NL80211_CMD_REG_CHANGE:
1790 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1791 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1792 NULL);
1793 break;
1794 case NL80211_CMD_REG_BEACON_HINT:
1795 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1796 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1797 NULL);
1798 break;
1799 case NL80211_CMD_NEW_STATION:
1800 nl80211_new_station_event(drv, tb);
1801 break;
1802 case NL80211_CMD_DEL_STATION:
1803 nl80211_del_station_event(drv, tb);
1804 break;
1805 case NL80211_CMD_SET_REKEY_OFFLOAD:
1806 nl80211_rekey_offload_event(drv, tb);
1807 break;
1808 case NL80211_CMD_PMKSA_CANDIDATE:
1809 nl80211_pmksa_candidate_event(drv, tb);
1810 break;
1811 case NL80211_CMD_PROBE_CLIENT:
1812 nl80211_client_probe_event(drv, tb);
1813 break;
1814 default:
1815 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1816 "(cmd=%d)", gnlh->cmd);
1817 break;
1818 }
1819
1820 return NL_SKIP;
1821 }
1822
1823
1824 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1825 void *handle)
1826 {
1827 struct nl_cb *cb;
1828 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1829
1830 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1831
1832 cb = nl_cb_clone(drv->global->nl_cb);
1833 if (!cb)
1834 return;
1835 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1836 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1837 nl_recvmsgs(handle, cb);
1838 nl_cb_put(cb);
1839 }
1840
1841
1842 /**
1843 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1844 * @priv: driver_nl80211 private data
1845 * @alpha2_arg: country to which to switch to
1846 * Returns: 0 on success, -1 on failure
1847 *
1848 * This asks nl80211 to set the regulatory domain for given
1849 * country ISO / IEC alpha2.
1850 */
1851 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1852 {
1853 struct i802_bss *bss = priv;
1854 struct wpa_driver_nl80211_data *drv = bss->drv;
1855 char alpha2[3];
1856 struct nl_msg *msg;
1857
1858 msg = nlmsg_alloc();
1859 if (!msg)
1860 return -ENOMEM;
1861
1862 alpha2[0] = alpha2_arg[0];
1863 alpha2[1] = alpha2_arg[1];
1864 alpha2[2] = '\0';
1865
1866 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1867
1868 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1869 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1870 return -EINVAL;
1871 return 0;
1872 nla_put_failure:
1873 return -EINVAL;
1874 }
1875
1876
1877 struct wiphy_info_data {
1878 struct wpa_driver_capa *capa;
1879
1880 unsigned int error:1;
1881 unsigned int device_ap_sme:1;
1882 unsigned int poll_command_supported:1;
1883 };
1884
1885
1886 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1887 {
1888 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1889 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1890 struct wiphy_info_data *info = arg;
1891 int p2p_go_supported = 0, p2p_client_supported = 0;
1892 int p2p_concurrent = 0;
1893 int auth_supported = 0, connect_supported = 0;
1894 struct wpa_driver_capa *capa = info->capa;
1895 static struct nla_policy
1896 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
1897 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
1898 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
1899 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
1900 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
1901 },
1902 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
1903 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
1904 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
1905 };
1906
1907 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1908 genlmsg_attrlen(gnlh, 0), NULL);
1909
1910 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1911 capa->max_scan_ssids =
1912 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1913
1914 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
1915 capa->max_sched_scan_ssids =
1916 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
1917
1918 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
1919 capa->max_match_sets =
1920 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
1921
1922 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1923 struct nlattr *nl_mode;
1924 int i;
1925 nla_for_each_nested(nl_mode,
1926 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1927 switch (nla_type(nl_mode)) {
1928 case NL80211_IFTYPE_AP:
1929 capa->flags |= WPA_DRIVER_FLAGS_AP;
1930 break;
1931 case NL80211_IFTYPE_P2P_GO:
1932 p2p_go_supported = 1;
1933 break;
1934 case NL80211_IFTYPE_P2P_CLIENT:
1935 p2p_client_supported = 1;
1936 break;
1937 }
1938 }
1939 }
1940
1941 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
1942 struct nlattr *nl_combi;
1943 int rem_combi;
1944
1945 nla_for_each_nested(nl_combi,
1946 tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
1947 rem_combi) {
1948 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
1949 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
1950 struct nlattr *nl_limit, *nl_mode;
1951 int err, rem_limit, rem_mode;
1952 int combination_has_p2p = 0, combination_has_mgd = 0;
1953
1954 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
1955 nl_combi,
1956 iface_combination_policy);
1957 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
1958 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
1959 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
1960 goto broken_combination;
1961
1962 nla_for_each_nested(nl_limit,
1963 tb_comb[NL80211_IFACE_COMB_LIMITS],
1964 rem_limit) {
1965 err = nla_parse_nested(tb_limit,
1966 MAX_NL80211_IFACE_LIMIT,
1967 nl_limit,
1968 iface_limit_policy);
1969 if (err ||
1970 !tb_limit[NL80211_IFACE_LIMIT_TYPES])
1971 goto broken_combination;
1972
1973 nla_for_each_nested(
1974 nl_mode,
1975 tb_limit[NL80211_IFACE_LIMIT_TYPES],
1976 rem_mode) {
1977 int ift = nla_type(nl_mode);
1978 if (ift == NL80211_IFTYPE_P2P_GO ||
1979 ift == NL80211_IFTYPE_P2P_CLIENT)
1980 combination_has_p2p = 1;
1981 if (ift == NL80211_IFTYPE_STATION)
1982 combination_has_mgd = 1;
1983 }
1984 if (combination_has_p2p && combination_has_mgd)
1985 break;
1986 }
1987
1988 if (combination_has_p2p && combination_has_mgd) {
1989 p2p_concurrent = 1;
1990 break;
1991 }
1992
1993 broken_combination:
1994 ;
1995 }
1996 }
1997
1998 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1999 struct nlattr *nl_cmd;
2000 int i;
2001
2002 nla_for_each_nested(nl_cmd,
2003 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2004 switch (nla_get_u32(nl_cmd)) {
2005 case NL80211_CMD_AUTHENTICATE:
2006 auth_supported = 1;
2007 break;
2008 case NL80211_CMD_CONNECT:
2009 connect_supported = 1;
2010 break;
2011 case NL80211_CMD_START_SCHED_SCAN:
2012 capa->sched_scan_supported = 1;
2013 break;
2014 case NL80211_CMD_PROBE_CLIENT:
2015 info->poll_command_supported = 1;
2016 break;
2017 }
2018 }
2019 }
2020
2021 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2022 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2023 "off-channel TX");
2024 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2025 }
2026
2027 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2028 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2029 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2030 }
2031
2032 /* default to 5000 since early versions of mac80211 don't set it */
2033 capa->max_remain_on_chan = 5000;
2034
2035 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2036 capa->max_remain_on_chan =
2037 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2038
2039 if (auth_supported)
2040 capa->flags |= WPA_DRIVER_FLAGS_SME;
2041 else if (!connect_supported) {
2042 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2043 "authentication/association or connect commands");
2044 info->error = 1;
2045 }
2046
2047 if (p2p_go_supported && p2p_client_supported)
2048 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2049 if (p2p_concurrent) {
2050 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2051 "interface (driver advertised support)");
2052 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2053 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2054 }
2055
2056 if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2057 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2058 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2059
2060 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2061 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2062 capa->flags |=
2063 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2064 }
2065 }
2066
2067 if (tb[NL80211_ATTR_DEVICE_AP_SME])
2068 info->device_ap_sme = 1;
2069
2070 return NL_SKIP;
2071 }
2072
2073
2074 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2075 struct wiphy_info_data *info)
2076 {
2077 struct nl_msg *msg;
2078
2079 os_memset(info, 0, sizeof(*info));
2080 info->capa = &drv->capa;
2081
2082 msg = nlmsg_alloc();
2083 if (!msg)
2084 return -1;
2085
2086 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2087
2088 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2089
2090 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2091 return 0;
2092 msg = NULL;
2093 nla_put_failure:
2094 nlmsg_free(msg);
2095 return -1;
2096 }
2097
2098
2099 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2100 {
2101 struct wiphy_info_data info;
2102 if (wpa_driver_nl80211_get_info(drv, &info))
2103 return -1;
2104
2105 if (info.error)
2106 return -1;
2107
2108 drv->has_capability = 1;
2109 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2110 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2111 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2112 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2113 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2114 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2115 WPA_DRIVER_CAPA_ENC_WEP104 |
2116 WPA_DRIVER_CAPA_ENC_TKIP |
2117 WPA_DRIVER_CAPA_ENC_CCMP;
2118 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2119 WPA_DRIVER_AUTH_SHARED |
2120 WPA_DRIVER_AUTH_LEAP;
2121
2122 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2123 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2124 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2125 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2126
2127 drv->device_ap_sme = info.device_ap_sme;
2128 drv->poll_command_supported = info.poll_command_supported;
2129
2130 return 0;
2131 }
2132
2133
2134 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2135 {
2136 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2137 if (global->nl_cb == NULL) {
2138 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2139 "callbacks");
2140 return -1;
2141 }
2142
2143 if (nl_create_handles(&global->nl, global->nl_cb, "nl"))
2144 return -1;
2145
2146 global->nl80211_id = genl_ctrl_resolve(global->nl.handle, "nl80211");
2147 if (global->nl80211_id < 0) {
2148 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2149 "found");
2150 return -1;
2151 }
2152
2153 return 0;
2154 }
2155
2156
2157 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2158 {
2159 struct nl80211_global *global = drv->global;
2160 int ret;
2161
2162 /* Initialize generic netlink and nl80211 */
2163
2164 if (nl_create_handles(&drv->nl_event, global->nl_cb, "event"))
2165 goto err3;
2166
2167 ret = nl_get_multicast_id(drv, "nl80211", "scan");
2168 if (ret >= 0)
2169 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2170 if (ret < 0) {
2171 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2172 "membership for scan events: %d (%s)",
2173 ret, strerror(-ret));
2174 goto err4;
2175 }
2176
2177 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
2178 if (ret >= 0)
2179 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2180 if (ret < 0) {
2181 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2182 "membership for mlme events: %d (%s)",
2183 ret, strerror(-ret));
2184 goto err4;
2185 }
2186
2187 ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
2188 if (ret >= 0)
2189 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2190 if (ret < 0) {
2191 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2192 "membership for regulatory events: %d (%s)",
2193 ret, strerror(-ret));
2194 /* Continue without regulatory events */
2195 }
2196
2197 eloop_register_read_sock(nl_socket_get_fd(drv->nl_event.handle),
2198 wpa_driver_nl80211_event_receive, drv,
2199 drv->nl_event.handle);
2200
2201 return 0;
2202
2203 err4:
2204 nl_destroy_handles(&drv->nl_event);
2205 err3:
2206 return -1;
2207 }
2208
2209
2210 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2211 {
2212 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2213 /*
2214 * This may be for any interface; use ifdown event to disable
2215 * interface.
2216 */
2217 }
2218
2219
2220 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2221 {
2222 struct wpa_driver_nl80211_data *drv = ctx;
2223 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2224 if (linux_set_iface_flags(drv->global->ioctl_sock,
2225 drv->first_bss.ifname, 1)) {
2226 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2227 "after rfkill unblock");
2228 return;
2229 }
2230 /* rtnetlink ifup handler will report interface as enabled */
2231 }
2232
2233
2234 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2235 {
2236 /* Find phy (radio) to which this interface belongs */
2237 char buf[90], *pos;
2238 int f, rv;
2239
2240 drv->phyname[0] = '\0';
2241 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2242 drv->first_bss.ifname);
2243 f = open(buf, O_RDONLY);
2244 if (f < 0) {
2245 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2246 buf, strerror(errno));
2247 return;
2248 }
2249
2250 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2251 close(f);
2252 if (rv < 0) {
2253 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2254 buf, strerror(errno));
2255 return;
2256 }
2257
2258 drv->phyname[rv] = '\0';
2259 pos = os_strchr(drv->phyname, '\n');
2260 if (pos)
2261 *pos = '\0';
2262 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2263 drv->first_bss.ifname, drv->phyname);
2264 }
2265
2266
2267 /**
2268 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2269 * @ctx: context to be used when calling wpa_supplicant functions,
2270 * e.g., wpa_supplicant_event()
2271 * @ifname: interface name, e.g., wlan0
2272 * @global_priv: private driver global data from global_init()
2273 * Returns: Pointer to private data, %NULL on failure
2274 */
2275 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2276 void *global_priv)
2277 {
2278 struct wpa_driver_nl80211_data *drv;
2279 struct rfkill_config *rcfg;
2280 struct i802_bss *bss;
2281
2282 if (global_priv == NULL)
2283 return NULL;
2284 drv = os_zalloc(sizeof(*drv));
2285 if (drv == NULL)
2286 return NULL;
2287 drv->global = global_priv;
2288 drv->ctx = ctx;
2289 bss = &drv->first_bss;
2290 bss->drv = drv;
2291 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2292 drv->monitor_ifidx = -1;
2293 drv->monitor_sock = -1;
2294 #ifdef CONFIG_AP
2295 drv->eapol_tx_sock = -1;
2296 #endif /* CONFIG_AP */
2297 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2298
2299 if (wpa_driver_nl80211_init_nl(drv)) {
2300 os_free(drv);
2301 return NULL;
2302 }
2303
2304 nl80211_get_phy_name(drv);
2305
2306 rcfg = os_zalloc(sizeof(*rcfg));
2307 if (rcfg == NULL)
2308 goto failed;
2309 rcfg->ctx = drv;
2310 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2311 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2312 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2313 drv->rfkill = rfkill_init(rcfg);
2314 if (drv->rfkill == NULL) {
2315 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2316 os_free(rcfg);
2317 }
2318
2319 if (wpa_driver_nl80211_finish_drv_init(drv))
2320 goto failed;
2321
2322 #ifdef CONFIG_AP
2323 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
2324 #endif /* CONFIG_AP */
2325
2326 if (drv->global) {
2327 dl_list_add(&drv->global->interfaces, &drv->list);
2328 drv->in_interface_list = 1;
2329 }
2330
2331 return bss;
2332
2333 failed:
2334 wpa_driver_nl80211_deinit(bss);
2335 return NULL;
2336 }
2337
2338
2339 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
2340 struct nl_handle *nl_handle,
2341 u16 type, const u8 *match, size_t match_len)
2342 {
2343 struct nl_msg *msg;
2344 int ret = -1;
2345
2346 msg = nlmsg_alloc();
2347 if (!msg)
2348 return -1;
2349
2350 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
2351
2352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2353 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
2354 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
2355
2356 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
2357 msg = NULL;
2358 if (ret) {
2359 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
2360 "failed (type=%u): ret=%d (%s)",
2361 type, ret, strerror(-ret));
2362 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
2363 match, match_len);
2364 goto nla_put_failure;
2365 }
2366 ret = 0;
2367 nla_put_failure:
2368 nlmsg_free(msg);
2369 return ret;
2370 }
2371
2372
2373 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
2374 const u8 *match, size_t match_len)
2375 {
2376 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
2377 return nl80211_register_frame(drv, drv->nl_event.handle,
2378 type, match, match_len);
2379 }
2380
2381
2382 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
2383 {
2384 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
2385 /* GAS Initial Request */
2386 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
2387 return -1;
2388 /* GAS Initial Response */
2389 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
2390 return -1;
2391 /* GAS Comeback Request */
2392 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
2393 return -1;
2394 /* GAS Comeback Response */
2395 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
2396 return -1;
2397 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
2398 #ifdef CONFIG_P2P
2399 /* P2P Public Action */
2400 if (nl80211_register_action_frame(drv,
2401 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
2402 6) < 0)
2403 return -1;
2404 /* P2P Action */
2405 if (nl80211_register_action_frame(drv,
2406 (u8 *) "\x7f\x50\x6f\x9a\x09",
2407 5) < 0)
2408 return -1;
2409 #endif /* CONFIG_P2P */
2410 #ifdef CONFIG_IEEE80211W
2411 /* SA Query Response */
2412 if (nl80211_register_action_frame(drv, (u8 *) "\x08\x01", 2) < 0)
2413 return -1;
2414 #endif /* CONFIG_IEEE80211W */
2415 #ifdef CONFIG_TDLS
2416 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
2417 /* TDLS Discovery Response */
2418 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0e", 2) <
2419 0)
2420 return -1;
2421 }
2422 #endif /* CONFIG_TDLS */
2423
2424 /* FT Action frames */
2425 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
2426 return -1;
2427 else
2428 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
2429 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
2430
2431 /* WNM - BSS Transition Management Request */
2432 if (nl80211_register_action_frame(drv, (u8 *) "\x0a\x07", 2) < 0)
2433 return -1;
2434
2435 return 0;
2436 }
2437
2438
2439 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2440 {
2441 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2442 }
2443
2444
2445 static int
2446 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
2447 {
2448 struct i802_bss *bss = &drv->first_bss;
2449 int send_rfkill_event = 0;
2450
2451 drv->ifindex = if_nametoindex(bss->ifname);
2452 drv->first_bss.ifindex = drv->ifindex;
2453
2454 #ifndef HOSTAPD
2455 /*
2456 * Make sure the interface starts up in station mode unless this is a
2457 * dynamically added interface (e.g., P2P) that was already configured
2458 * with proper iftype.
2459 */
2460 if (drv->ifindex != drv->global->if_add_ifindex &&
2461 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
2462 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
2463 "use managed mode");
2464 return -1;
2465 }
2466
2467 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
2468 if (rfkill_is_blocked(drv->rfkill)) {
2469 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2470 "interface '%s' due to rfkill",
2471 bss->ifname);
2472 drv->if_disabled = 1;
2473 send_rfkill_event = 1;
2474 } else {
2475 wpa_printf(MSG_ERROR, "nl80211: Could not set "
2476 "interface '%s' UP", bss->ifname);
2477 return -1;
2478 }
2479 }
2480
2481 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2482 1, IF_OPER_DORMANT);
2483 #endif /* HOSTAPD */
2484
2485 if (wpa_driver_nl80211_capa(drv))
2486 return -1;
2487
2488 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2489 drv->addr))
2490 return -1;
2491
2492 if (nl80211_register_action_frames(drv) < 0) {
2493 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
2494 "frame processing - ignore for now");
2495 /*
2496 * Older kernel versions did not support this, so ignore the
2497 * error for now. Some functionality may not be available
2498 * because of this.
2499 */
2500 }
2501
2502 if (send_rfkill_event) {
2503 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2504 drv, drv->ctx);
2505 }
2506
2507 return 0;
2508 }
2509
2510
2511 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2512 {
2513 struct nl_msg *msg;
2514
2515 msg = nlmsg_alloc();
2516 if (!msg)
2517 return -ENOMEM;
2518
2519 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2520 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2521
2522 return send_and_recv_msgs(drv, msg, NULL, NULL);
2523 nla_put_failure:
2524 return -ENOBUFS;
2525 }
2526
2527
2528 /**
2529 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2530 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2531 *
2532 * Shut down driver interface and processing of driver events. Free
2533 * private data buffer if one was allocated in wpa_driver_nl80211_init().
2534 */
2535 static void wpa_driver_nl80211_deinit(void *priv)
2536 {
2537 struct i802_bss *bss = priv;
2538 struct wpa_driver_nl80211_data *drv = bss->drv;
2539
2540 #ifdef CONFIG_AP
2541 if (drv->eapol_tx_sock >= 0)
2542 close(drv->eapol_tx_sock);
2543 #endif /* CONFIG_AP */
2544
2545 if (drv->nl_preq.handle)
2546 wpa_driver_nl80211_probe_req_report(bss, 0);
2547 if (bss->added_if_into_bridge) {
2548 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2549 bss->ifname) < 0)
2550 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2551 "interface %s from bridge %s: %s",
2552 bss->ifname, bss->brname, strerror(errno));
2553 }
2554 if (bss->added_bridge) {
2555 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2556 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2557 "bridge %s: %s",
2558 bss->brname, strerror(errno));
2559 }
2560
2561 nl80211_remove_monitor_interface(drv);
2562
2563 if (is_ap_interface(drv->nlmode))
2564 wpa_driver_nl80211_del_beacon(drv);
2565
2566 #ifdef HOSTAPD
2567 if (drv->last_freq_ht) {
2568 /* Clear HT flags from the driver */
2569 struct hostapd_freq_params freq;
2570 os_memset(&freq, 0, sizeof(freq));
2571 freq.freq = drv->last_freq;
2572 i802_set_freq(priv, &freq);
2573 }
2574
2575 if (drv->eapol_sock >= 0) {
2576 eloop_unregister_read_sock(drv->eapol_sock);
2577 close(drv->eapol_sock);
2578 }
2579
2580 if (drv->if_indices != drv->default_if_indices)
2581 os_free(drv->if_indices);
2582 #endif /* HOSTAPD */
2583
2584 if (drv->disabled_11b_rates)
2585 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2586
2587 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2588 IF_OPER_UP);
2589 rfkill_deinit(drv->rfkill);
2590
2591 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2592
2593 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
2594 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
2595
2596 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_event.handle));
2597 nl_destroy_handles(&drv->nl_event);
2598
2599 os_free(drv->filter_ssids);
2600
2601 if (drv->in_interface_list)
2602 dl_list_del(&drv->list);
2603
2604 os_free(drv);
2605 }
2606
2607
2608 /**
2609 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2610 * @eloop_ctx: Driver private data
2611 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2612 *
2613 * This function can be used as registered timeout when starting a scan to
2614 * generate a scan completed event if the driver does not report this.
2615 */
2616 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2617 {
2618 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2619 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2620 wpa_driver_nl80211_set_mode(&drv->first_bss,
2621 drv->ap_scan_as_station);
2622 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2623 }
2624 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2625 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2626 }
2627
2628
2629 /**
2630 * wpa_driver_nl80211_scan - Request the driver to initiate scan
2631 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2632 * @params: Scan parameters
2633 * Returns: 0 on success, -1 on failure
2634 */
2635 static int wpa_driver_nl80211_scan(void *priv,
2636 struct wpa_driver_scan_params *params)
2637 {
2638 struct i802_bss *bss = priv;
2639 struct wpa_driver_nl80211_data *drv = bss->drv;
2640 int ret = 0, timeout;
2641 struct nl_msg *msg, *ssids, *freqs, *rates;
2642 size_t i;
2643
2644 msg = nlmsg_alloc();
2645 ssids = nlmsg_alloc();
2646 freqs = nlmsg_alloc();
2647 rates = nlmsg_alloc();
2648 if (!msg || !ssids || !freqs || !rates) {
2649 nlmsg_free(msg);
2650 nlmsg_free(ssids);
2651 nlmsg_free(freqs);
2652 nlmsg_free(rates);
2653 return -1;
2654 }
2655
2656 os_free(drv->filter_ssids);
2657 drv->filter_ssids = params->filter_ssids;
2658 params->filter_ssids = NULL;
2659 drv->num_filter_ssids = params->num_filter_ssids;
2660
2661 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
2662
2663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2664
2665 for (i = 0; i < params->num_ssids; i++) {
2666 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2667 params->ssids[i].ssid,
2668 params->ssids[i].ssid_len);
2669 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2670 params->ssids[i].ssid);
2671 }
2672 if (params->num_ssids)
2673 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2674
2675 if (params->extra_ies) {
2676 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2677 params->extra_ies, params->extra_ies_len);
2678 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2679 params->extra_ies);
2680 }
2681
2682 if (params->freqs) {
2683 for (i = 0; params->freqs[i]; i++) {
2684 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2685 "MHz", params->freqs[i]);
2686 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2687 }
2688 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2689 }
2690
2691 if (params->p2p_probe) {
2692 /*
2693 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2694 * by masking out everything else apart from the OFDM rates 6,
2695 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2696 * rates are left enabled.
2697 */
2698 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
2699 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2700 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
2701
2702 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2703 }
2704
2705 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2706 msg = NULL;
2707 if (ret) {
2708 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2709 "(%s)", ret, strerror(-ret));
2710 #ifdef HOSTAPD
2711 if (is_ap_interface(drv->nlmode)) {
2712 /*
2713 * mac80211 does not allow scan requests in AP mode, so
2714 * try to do this in station mode.
2715 */
2716 if (wpa_driver_nl80211_set_mode(
2717 bss, NL80211_IFTYPE_STATION))
2718 goto nla_put_failure;
2719
2720 if (wpa_driver_nl80211_scan(drv, params)) {
2721 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2722 goto nla_put_failure;
2723 }
2724
2725 /* Restore AP mode when processing scan results */
2726 drv->ap_scan_as_station = drv->nlmode;
2727 ret = 0;
2728 } else
2729 goto nla_put_failure;
2730 #else /* HOSTAPD */
2731 goto nla_put_failure;
2732 #endif /* HOSTAPD */
2733 }
2734
2735 /* Not all drivers generate "scan completed" wireless event, so try to
2736 * read results after a timeout. */
2737 timeout = 10;
2738 if (drv->scan_complete_events) {
2739 /*
2740 * The driver seems to deliver events to notify when scan is
2741 * complete, so use longer timeout to avoid race conditions
2742 * with scanning and following association request.
2743 */
2744 timeout = 30;
2745 }
2746 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2747 "seconds", ret, timeout);
2748 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2749 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2750 drv, drv->ctx);
2751
2752 nla_put_failure:
2753 nlmsg_free(ssids);
2754 nlmsg_free(msg);
2755 nlmsg_free(freqs);
2756 nlmsg_free(rates);
2757 return ret;
2758 }
2759
2760
2761 /**
2762 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2763 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2764 * @params: Scan parameters
2765 * @interval: Interval between scan cycles in milliseconds
2766 * Returns: 0 on success, -1 on failure or if not supported
2767 */
2768 static int wpa_driver_nl80211_sched_scan(void *priv,
2769 struct wpa_driver_scan_params *params,
2770 u32 interval)
2771 {
2772 struct i802_bss *bss = priv;
2773 struct wpa_driver_nl80211_data *drv = bss->drv;
2774 int ret = 0;
2775 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
2776 size_t i;
2777
2778 msg = nlmsg_alloc();
2779 ssids = nlmsg_alloc();
2780 freqs = nlmsg_alloc();
2781 if (!msg || !ssids || !freqs) {
2782 nlmsg_free(msg);
2783 nlmsg_free(ssids);
2784 nlmsg_free(freqs);
2785 return -1;
2786 }
2787
2788 os_free(drv->filter_ssids);
2789 drv->filter_ssids = params->filter_ssids;
2790 params->filter_ssids = NULL;
2791 drv->num_filter_ssids = params->num_filter_ssids;
2792
2793 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
2794
2795 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2796
2797 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2798
2799 if (drv->num_filter_ssids) {
2800 match_sets = nlmsg_alloc();
2801
2802 for (i = 0; i < drv->num_filter_ssids; i++) {
2803 wpa_hexdump_ascii(MSG_MSGDUMP,
2804 "nl80211: Sched scan filter SSID",
2805 drv->filter_ssids[i].ssid,
2806 drv->filter_ssids[i].ssid_len);
2807
2808 match_set_ssid = nlmsg_alloc();
2809 nla_put(match_set_ssid,
2810 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2811 drv->filter_ssids[i].ssid_len,
2812 drv->filter_ssids[i].ssid);
2813
2814 nla_put_nested(match_sets, i + 1, match_set_ssid);
2815
2816 nlmsg_free(match_set_ssid);
2817 }
2818
2819 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
2820 match_sets);
2821 nlmsg_free(match_sets);
2822 }
2823
2824 for (i = 0; i < params->num_ssids; i++) {
2825 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
2826 params->ssids[i].ssid,
2827 params->ssids[i].ssid_len);
2828 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2829 params->ssids[i].ssid);
2830 }
2831 if (params->num_ssids)
2832 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2833
2834 if (params->extra_ies) {
2835 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
2836 params->extra_ies, params->extra_ies_len);
2837 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2838 params->extra_ies);
2839 }
2840
2841 if (params->freqs) {
2842 for (i = 0; params->freqs[i]; i++) {
2843 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2844 "MHz", params->freqs[i]);
2845 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2846 }
2847 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2848 }
2849
2850 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2851
2852 /* TODO: if we get an error here, we should fall back to normal scan */
2853
2854 msg = NULL;
2855 if (ret) {
2856 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2857 "ret=%d (%s)", ret, strerror(-ret));
2858 goto nla_put_failure;
2859 }
2860
2861 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2862 "scan interval %d msec", ret, interval);
2863
2864 nla_put_failure:
2865 nlmsg_free(ssids);
2866 nlmsg_free(msg);
2867 nlmsg_free(freqs);
2868 return ret;
2869 }
2870
2871
2872 /**
2873 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2874 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2875 * Returns: 0 on success, -1 on failure or if not supported
2876 */
2877 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2878 {
2879 struct i802_bss *bss = priv;
2880 struct wpa_driver_nl80211_data *drv = bss->drv;
2881 int ret = 0;
2882 struct nl_msg *msg;
2883
2884 msg = nlmsg_alloc();
2885 if (!msg)
2886 return -1;
2887
2888 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2889
2890 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2891
2892 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2893 msg = NULL;
2894 if (ret) {
2895 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2896 "ret=%d (%s)", ret, strerror(-ret));
2897 goto nla_put_failure;
2898 }
2899
2900 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2901
2902 nla_put_failure:
2903 nlmsg_free(msg);
2904 return ret;
2905 }
2906
2907
2908 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2909 {
2910 const u8 *end, *pos;
2911
2912 if (ies == NULL)
2913 return NULL;
2914
2915 pos = ies;
2916 end = ies + ies_len;
2917
2918 while (pos + 1 < end) {
2919 if (pos + 2 + pos[1] > end)
2920 break;
2921 if (pos[0] == ie)
2922 return pos;
2923 pos += 2 + pos[1];
2924 }
2925
2926 return NULL;
2927 }
2928
2929
2930 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2931 const u8 *ie, size_t ie_len)
2932 {
2933 const u8 *ssid;
2934 size_t i;
2935
2936 if (drv->filter_ssids == NULL)
2937 return 0;
2938
2939 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2940 if (ssid == NULL)
2941 return 1;
2942
2943 for (i = 0; i < drv->num_filter_ssids; i++) {
2944 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2945 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2946 0)
2947 return 0;
2948 }
2949
2950 return 1;
2951 }
2952
2953
2954 static int bss_info_handler(struct nl_msg *msg, void *arg)
2955 {
2956 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2957 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2958 struct nlattr *bss[NL80211_BSS_MAX + 1];
2959 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2960 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2961 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2962 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2963 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2964 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2965 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2966 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2967 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2968 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2969 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2970 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2971 };
2972 struct nl80211_bss_info_arg *_arg = arg;
2973 struct wpa_scan_results *res = _arg->res;
2974 struct wpa_scan_res **tmp;
2975 struct wpa_scan_res *r;
2976 const u8 *ie, *beacon_ie;
2977 size_t ie_len, beacon_ie_len;
2978 u8 *pos;
2979 size_t i;
2980
2981 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2982 genlmsg_attrlen(gnlh, 0), NULL);
2983 if (!tb[NL80211_ATTR_BSS])
2984 return NL_SKIP;
2985 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2986 bss_policy))
2987 return NL_SKIP;
2988 if (bss[NL80211_BSS_STATUS]) {
2989 enum nl80211_bss_status status;
2990 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2991 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2992 bss[NL80211_BSS_FREQUENCY]) {
2993 _arg->assoc_freq =
2994 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2995 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2996 _arg->assoc_freq);
2997 }
2998 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2999 bss[NL80211_BSS_BSSID]) {
3000 os_memcpy(_arg->assoc_bssid,
3001 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3002 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3003 MACSTR, MAC2STR(_arg->assoc_bssid));
3004 }
3005 }
3006 if (!res)
3007 return NL_SKIP;
3008 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3009 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3010 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3011 } else {
3012 ie = NULL;
3013 ie_len = 0;
3014 }
3015 if (bss[NL80211_BSS_BEACON_IES]) {
3016 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3017 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3018 } else {
3019 beacon_ie = NULL;
3020 beacon_ie_len = 0;
3021 }
3022
3023 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3024 ie ? ie_len : beacon_ie_len))
3025 return NL_SKIP;
3026
3027 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3028 if (r == NULL)
3029 return NL_SKIP;
3030 if (bss[NL80211_BSS_BSSID])
3031 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3032 ETH_ALEN);
3033 if (bss[NL80211_BSS_FREQUENCY])
3034 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3035 if (bss[NL80211_BSS_BEACON_INTERVAL])
3036 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3037 if (bss[NL80211_BSS_CAPABILITY])
3038 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3039 r->flags |= WPA_SCAN_NOISE_INVALID;
3040 if (bss[NL80211_BSS_SIGNAL_MBM]) {
3041 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3042 r->level /= 100; /* mBm to dBm */
3043 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3044 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3045 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3046 r->flags |= WPA_SCAN_QUAL_INVALID;
3047 } else
3048 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3049 if (bss[NL80211_BSS_TSF])
3050 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3051 if (bss[NL80211_BSS_SEEN_MS_AGO])
3052 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3053 r->ie_len = ie_len;
3054 pos = (u8 *) (r + 1);
3055 if (ie) {
3056 os_memcpy(pos, ie, ie_len);
3057 pos += ie_len;
3058 }
3059 r->beacon_ie_len = beacon_ie_len;
3060 if (beacon_ie)
3061 os_memcpy(pos, beacon_ie, beacon_ie_len);
3062
3063 if (bss[NL80211_BSS_STATUS]) {
3064 enum nl80211_bss_status status;
3065 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3066 switch (status) {
3067 case NL80211_BSS_STATUS_AUTHENTICATED:
3068 r->flags |= WPA_SCAN_AUTHENTICATED;
3069 break;
3070 case NL80211_BSS_STATUS_ASSOCIATED:
3071 r->flags |= WPA_SCAN_ASSOCIATED;
3072 break;
3073 default:
3074 break;
3075 }
3076 }
3077
3078 /*
3079 * cfg80211 maintains separate BSS table entries for APs if the same
3080 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3081 * not use frequency as a separate key in the BSS table, so filter out
3082 * duplicated entries. Prefer associated BSS entry in such a case in
3083 * order to get the correct frequency into the BSS table.
3084 */
3085 for (i = 0; i < res->num; i++) {
3086 const u8 *s1, *s2;
3087 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3088 continue;
3089
3090 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3091 res->res[i]->ie_len, WLAN_EID_SSID);
3092 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3093 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3094 os_memcmp(s1, s2, 2 + s1[1]) != 0)
3095 continue;
3096
3097 /* Same BSSID,SSID was already included in scan results */
3098 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3099 "for " MACSTR, MAC2STR(r->bssid));
3100
3101 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3102 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3103 os_free(res->res[i]);
3104 res->res[i] = r;
3105 } else
3106 os_free(r);
3107 return NL_SKIP;
3108 }
3109
3110 tmp = os_realloc(res->res,
3111 (res->num + 1) * sizeof(struct wpa_scan_res *));
3112 if (tmp == NULL) {
3113 os_free(r);
3114 return NL_SKIP;
3115 }
3116 tmp[res->num++] = r;
3117 res->res = tmp;
3118
3119 return NL_SKIP;
3120 }
3121
3122
3123 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3124 const u8 *addr)
3125 {
3126 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3127 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3128 "mismatch (" MACSTR ")", MAC2STR(addr));
3129 wpa_driver_nl80211_mlme(drv, addr,
3130 NL80211_CMD_DEAUTHENTICATE,
3131 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3132 }
3133 }
3134
3135
3136 static void wpa_driver_nl80211_check_bss_status(
3137 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3138 {
3139 size_t i;
3140
3141 for (i = 0; i < res->num; i++) {
3142 struct wpa_scan_res *r = res->res[i];
3143 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3144 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3145 "indicates BSS status with " MACSTR
3146 " as authenticated",
3147 MAC2STR(r->bssid));
3148 if (is_sta_interface(drv->nlmode) &&
3149 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3150 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3151 0) {
3152 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3153 " in local state (auth=" MACSTR
3154 " assoc=" MACSTR ")",
3155 MAC2STR(drv->auth_bssid),
3156 MAC2STR(drv->bssid));
3157 clear_state_mismatch(drv, r->bssid);
3158 }
3159 }
3160
3161 if (r->flags & WPA_SCAN_ASSOCIATED) {
3162 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3163 "indicate BSS status with " MACSTR
3164 " as associated",
3165 MAC2STR(r->bssid));
3166 if (is_sta_interface(drv->nlmode) &&
3167 !drv->associated) {
3168 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3169 "(not associated) does not match "
3170 "with BSS state");
3171 clear_state_mismatch(drv, r->bssid);
3172 } else if (is_sta_interface(drv->nlmode) &&
3173 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3174 0) {
3175 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3176 "(associated with " MACSTR ") does "
3177 "not match with BSS state",
3178 MAC2STR(drv->bssid));
3179 clear_state_mismatch(drv, r->bssid);
3180 clear_state_mismatch(drv, drv->bssid);
3181 }
3182 }
3183 }
3184 }
3185
3186
3187 static struct wpa_scan_results *
3188 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3189 {
3190 struct nl_msg *msg;
3191 struct wpa_scan_results *res;
3192 int ret;
3193 struct nl80211_bss_info_arg arg;
3194
3195 res = os_zalloc(sizeof(*res));
3196 if (res == NULL)
3197 return NULL;
3198 msg = nlmsg_alloc();
3199 if (!msg)
3200 goto nla_put_failure;
3201
3202 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3203 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3204
3205 arg.drv = drv;
3206 arg.res = res;
3207 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3208 msg = NULL;
3209 if (ret == 0) {
3210 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3211 "BSSes)", (unsigned long) res->num);
3212 nl80211_get_noise_for_scan_results(drv, res);
3213 return res;
3214 }
3215 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3216 "(%s)", ret, strerror(-ret));
3217 nla_put_failure:
3218 nlmsg_free(msg);
3219 wpa_scan_results_free(res);
3220 return NULL;
3221 }
3222
3223
3224 /**
3225 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3226 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3227 * Returns: Scan results on success, -1 on failure
3228 */
3229 static struct wpa_scan_results *
3230 wpa_driver_nl80211_get_scan_results(void *priv)
3231 {
3232 struct i802_bss *bss = priv;
3233 struct wpa_driver_nl80211_data *drv = bss->drv;
3234 struct wpa_scan_results *res;
3235
3236 res = nl80211_get_scan_results(drv);
3237 if (res)
3238 wpa_driver_nl80211_check_bss_status(drv, res);
3239 return res;
3240 }
3241
3242
3243 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3244 {
3245 struct wpa_scan_results *res;
3246 size_t i;
3247
3248 res = nl80211_get_scan_results(drv);
3249 if (res == NULL) {
3250 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3251 return;
3252 }
3253
3254 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3255 for (i = 0; i < res->num; i++) {
3256 struct wpa_scan_res *r = res->res[i];
3257 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3258 (int) i, (int) res->num, MAC2STR(r->bssid),
3259 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3260 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3261 }
3262
3263 wpa_scan_results_free(res);
3264 }
3265
3266
3267 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
3268 enum wpa_alg alg, const u8 *addr,
3269 int key_idx, int set_tx,
3270 const u8 *seq, size_t seq_len,
3271 const u8 *key, size_t key_len)
3272 {
3273 struct i802_bss *bss = priv;
3274 struct wpa_driver_nl80211_data *drv = bss->drv;
3275 int ifindex = if_nametoindex(ifname);
3276 struct nl_msg *msg;
3277 int ret;
3278
3279 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
3280 "set_tx=%d seq_len=%lu key_len=%lu",
3281 __func__, ifindex, alg, addr, key_idx, set_tx,
3282 (unsigned long) seq_len, (unsigned long) key_len);
3283 #ifdef CONFIG_TDLS
3284 if (key_idx == -1)
3285 key_idx = 0;
3286 #endif /* CONFIG_TDLS */
3287
3288 msg = nlmsg_alloc();
3289 if (!msg)
3290 return -ENOMEM;
3291
3292 if (alg == WPA_ALG_NONE) {
3293 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3294 } else {
3295 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3296 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3297 switch (alg) {
3298 case WPA_ALG_WEP:
3299 if (key_len == 5)
3300 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3301 WLAN_CIPHER_SUITE_WEP40);
3302 else
3303 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3304 WLAN_CIPHER_SUITE_WEP104);
3305 break;
3306 case WPA_ALG_TKIP:
3307 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3308 WLAN_CIPHER_SUITE_TKIP);
3309 break;
3310 case WPA_ALG_CCMP:
3311 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3312 WLAN_CIPHER_SUITE_CCMP);
3313 break;
3314 case WPA_ALG_IGTK:
3315 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3316 WLAN_CIPHER_SUITE_AES_CMAC);
3317 break;
3318 default:
3319 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3320 "algorithm %d", __func__, alg);
3321 nlmsg_free(msg);
3322 return -1;
3323 }
3324 }
3325
3326 if (seq && seq_len)
3327 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3328
3329 if (addr && !is_broadcast_ether_addr(addr)) {
3330 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
3331 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3332
3333 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3334 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
3335 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3336 NL80211_KEYTYPE_GROUP);
3337 }
3338 } else if (addr && is_broadcast_ether_addr(addr)) {
3339 struct nl_msg *types;
3340 int err;
3341 wpa_printf(MSG_DEBUG, " broadcast key");
3342 types = nlmsg_alloc();
3343 if (!types)
3344 goto nla_put_failure;
3345 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3346 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3347 types);
3348 nlmsg_free(types);
3349 if (err)
3350 goto nla_put_failure;
3351 }
3352 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3353 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3354
3355 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3356 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3357 ret = 0;
3358 if (ret)
3359 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3360 ret, strerror(-ret));
3361
3362 /*
3363 * If we failed or don't need to set the default TX key (below),
3364 * we're done here.
3365 */
3366 if (ret || !set_tx || alg == WPA_ALG_NONE)
3367 return ret;
3368 if (is_ap_interface(drv->nlmode) && addr &&
3369 !is_broadcast_ether_addr(addr))
3370 return ret;
3371
3372 msg = nlmsg_alloc();
3373 if (!msg)
3374 return -ENOMEM;
3375
3376 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3377 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3378 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3379 if (alg == WPA_ALG_IGTK)
3380 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3381 else
3382 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3383 if (addr && is_broadcast_ether_addr(addr)) {
3384 struct nl_msg *types;
3385 int err;
3386 types = nlmsg_alloc();
3387 if (!types)
3388 goto nla_put_failure;
3389 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3390 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3391 types);
3392 nlmsg_free(types);
3393 if (err)
3394 goto nla_put_failure;
3395 } else if (addr) {
3396 struct nl_msg *types;
3397 int err;
3398 types = nlmsg_alloc();
3399 if (!types)
3400 goto nla_put_failure;
3401 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3402 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3403 types);
3404 nlmsg_free(types);
3405 if (err)
3406 goto nla_put_failure;
3407 }
3408
3409 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3410 if (ret == -ENOENT)
3411 ret = 0;
3412 if (ret)
3413 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3414 "err=%d %s)", ret, strerror(-ret));
3415 return ret;
3416
3417 nla_put_failure:
3418 return -ENOBUFS;
3419 }
3420
3421
3422 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3423 int key_idx, int defkey,
3424 const u8 *seq, size_t seq_len,
3425 const u8 *key, size_t key_len)
3426 {
3427 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3428 if (!key_attr)
3429 return -1;
3430
3431 if (defkey && alg == WPA_ALG_IGTK)
3432 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3433 else if (defkey)
3434 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3435
3436 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3437
3438 switch (alg) {
3439 case WPA_ALG_WEP:
3440 if (key_len == 5)
3441 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3442 WLAN_CIPHER_SUITE_WEP40);
3443 else
3444 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3445 WLAN_CIPHER_SUITE_WEP104);
3446 break;
3447 case WPA_ALG_TKIP:
3448 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
3449 break;
3450 case WPA_ALG_CCMP:
3451 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
3452 break;
3453 case WPA_ALG_IGTK:
3454 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3455 WLAN_CIPHER_SUITE_AES_CMAC);
3456 break;
3457 default:
3458 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3459 "algorithm %d", __func__, alg);
3460 return -1;
3461 }
3462
3463 if (seq && seq_len)
3464 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3465
3466 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3467
3468 nla_nest_end(msg, key_attr);
3469
3470 return 0;
3471 nla_put_failure:
3472 return -1;
3473 }
3474
3475
3476 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3477 struct nl_msg *msg)
3478 {
3479 int i, privacy = 0;
3480 struct nlattr *nl_keys, *nl_key;
3481
3482 for (i = 0; i < 4; i++) {
3483 if (!params->wep_key[i])
3484 continue;
3485 privacy = 1;
3486 break;
3487 }
3488 if (params->wps == WPS_MODE_PRIVACY)
3489 privacy = 1;
3490 if (params->pairwise_suite &&
3491 params->pairwise_suite != WPA_CIPHER_NONE)
3492 privacy = 1;
3493
3494 if (!privacy)
3495 return 0;
3496
3497 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3498
3499 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3500 if (!nl_keys)
3501 goto nla_put_failure;
3502
3503 for (i = 0; i < 4; i++) {
3504 if (!params->wep_key[i])
3505 continue;
3506
3507 nl_key = nla_nest_start(msg, i);
3508 if (!nl_key)
3509 goto nla_put_failure;
3510
3511 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3512 params->wep_key[i]);
3513 if (params->wep_key_len[i] == 5)
3514 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3515 WLAN_CIPHER_SUITE_WEP40);
3516 else
3517 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3518 WLAN_CIPHER_SUITE_WEP104);
3519
3520 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3521
3522 if (i == params->wep_tx_keyidx)
3523 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3524
3525 nla_nest_end(msg, nl_key);
3526 }
3527 nla_nest_end(msg, nl_keys);
3528
3529 return 0;
3530
3531 nla_put_failure:
3532 return -ENOBUFS;
3533 }
3534
3535
3536 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3537 const u8 *addr, int cmd, u16 reason_code,
3538 int local_state_change)
3539 {
3540 int ret = -1;
3541 struct nl_msg *msg;
3542
3543 msg = nlmsg_alloc();
3544 if (!msg)
3545 return -1;
3546
3547 nl80211_cmd(drv, msg, 0, cmd);
3548
3549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3550 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3551 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3552 if (local_state_change)
3553 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3554
3555 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3556 msg = NULL;
3557 if (ret) {
3558 wpa_dbg(drv->ctx, MSG_DEBUG,
3559 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3560 reason_code, ret, strerror(-ret));
3561 goto nla_put_failure;
3562 }
3563 ret = 0;
3564
3565 nla_put_failure:
3566 nlmsg_free(msg);
3567 return ret;
3568 }
3569
3570
3571 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3572 const u8 *addr, int reason_code)
3573 {
3574 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3575 __func__, MAC2STR(addr), reason_code);
3576 drv->associated = 0;
3577 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
3578 reason_code, 0);
3579 }
3580
3581
3582 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
3583 int reason_code)
3584 {
3585 struct i802_bss *bss = priv;
3586 struct wpa_driver_nl80211_data *drv = bss->drv;
3587 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3588 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3589 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3590 __func__, MAC2STR(addr), reason_code);
3591 drv->associated = 0;
3592 if (drv->nlmode == NL80211_IFTYPE_ADHOC)
3593 return nl80211_leave_ibss(drv);
3594 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3595 reason_code, 0);
3596 }
3597
3598
3599 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
3600 int reason_code)
3601 {
3602 struct i802_bss *bss = priv;
3603 struct wpa_driver_nl80211_data *drv = bss->drv;
3604 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3605 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3606 wpa_printf(MSG_DEBUG, "%s", __func__);
3607 drv->associated = 0;
3608 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
3609 reason_code, 0);
3610 }
3611
3612
3613 static int wpa_driver_nl80211_authenticate(
3614 void *priv, struct wpa_driver_auth_params *params)
3615 {
3616 struct i802_bss *bss = priv;
3617 struct wpa_driver_nl80211_data *drv = bss->drv;
3618 int ret = -1, i;
3619 struct nl_msg *msg;
3620 enum nl80211_auth_type type;
3621 enum nl80211_iftype nlmode;
3622 int count = 0;
3623
3624 drv->associated = 0;
3625 os_memset(drv->auth_bssid, 0, ETH_ALEN);
3626 /* FIX: IBSS mode */
3627 nlmode = params->p2p ?
3628 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3629 if (drv->nlmode != nlmode &&
3630 wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
3631 return -1;
3632
3633 retry:
3634 msg = nlmsg_alloc();
3635 if (!msg)
3636 return -1;
3637
3638 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3639 drv->ifindex);
3640
3641 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3642
3643 for (i = 0; i < 4; i++) {
3644 if (!params->wep_key[i])
3645 continue;
3646 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
3647 NULL, i,
3648 i == params->wep_tx_keyidx, NULL, 0,
3649 params->wep_key[i],
3650 params->wep_key_len[i]);
3651 if (params->wep_tx_keyidx != i)
3652 continue;
3653 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3654 params->wep_key[i], params->wep_key_len[i])) {
3655 nlmsg_free(msg);
3656 return -1;
3657 }
3658 }
3659
3660 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3661 if (params->bssid) {
3662 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3663 MAC2STR(params->bssid));
3664 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3665 }
3666 if (params->freq) {
3667 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3668 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3669 }
3670 if (params->ssid) {
3671 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3672 params->ssid, params->ssid_len);
3673 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3674 params->ssid);
3675 }
3676 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
3677 if (params->ie)
3678 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3679 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3680 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3681 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3682 type = NL80211_AUTHTYPE_SHARED_KEY;
3683 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3684 type = NL80211_AUTHTYPE_NETWORK_EAP;
3685 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3686 type = NL80211_AUTHTYPE_FT;
3687 else
3688 goto nla_put_failure;
3689 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3690 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3691 if (params->local_state_change) {
3692 wpa_printf(MSG_DEBUG, " * Local state change only");
3693 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3694 }
3695
3696 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3697 msg = NULL;
3698 if (ret) {
3699 wpa_dbg(drv->ctx, MSG_DEBUG,
3700 "nl80211: MLME command failed (auth): ret=%d (%s)",
3701 ret, strerror(-ret));
3702 count++;
3703 if (ret == -EALREADY && count == 1 && params->bssid &&
3704 !params->local_state_change) {
3705 /*
3706 * mac80211 does not currently accept new
3707 * authentication if we are already authenticated. As a
3708 * workaround, force deauthentication and try again.
3709 */
3710 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3711 "after forced deauthentication");
3712 wpa_driver_nl80211_deauthenticate(
3713 bss, params->bssid,
3714 WLAN_REASON_PREV_AUTH_NOT_VALID);
3715 nlmsg_free(msg);
3716 goto retry;
3717 }
3718 goto nla_put_failure;
3719 }
3720 ret = 0;
3721 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3722 "successfully");
3723
3724 nla_put_failure:
3725 nlmsg_free(msg);
3726 return ret;
3727 }
3728
3729
3730 struct phy_info_arg {
3731 u16 *num_modes;
3732 struct hostapd_hw_modes *modes;
3733 };
3734
3735 static int phy_info_handler(struct nl_msg *msg, void *arg)
3736 {
3737 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3738 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3739 struct phy_info_arg *phy_info = arg;
3740
3741 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
3742
3743 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
3744 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3745 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
3746 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
3747 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
3748 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
3749 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
3750 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
3751 };
3752
3753 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
3754 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
3755 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
3756 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
3757 };
3758
3759 struct nlattr *nl_band;
3760 struct nlattr *nl_freq;
3761 struct nlattr *nl_rate;
3762 int rem_band, rem_freq, rem_rate;
3763 struct hostapd_hw_modes *mode;
3764 int idx, mode_is_set;
3765
3766 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3767 genlmsg_attrlen(gnlh, 0), NULL);
3768
3769 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
3770 return NL_SKIP;
3771
3772 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
3773 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
3774 if (!mode)
3775 return NL_SKIP;
3776 phy_info->modes = mode;
3777
3778 mode_is_set = 0;
3779
3780 mode = &phy_info->modes[*(phy_info->num_modes)];
3781 memset(mode, 0, sizeof(*mode));
3782 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
3783 *(phy_info->num_modes) += 1;
3784
3785 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
3786 nla_len(nl_band), NULL);
3787
3788 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
3789 mode->ht_capab = nla_get_u16(
3790 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
3791 }
3792
3793 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
3794 mode->a_mpdu_params |= nla_get_u8(
3795 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
3796 0x03;
3797 }
3798
3799 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
3800 mode->a_mpdu_params |= nla_get_u8(
3801 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
3802 2;
3803 }
3804
3805 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
3806 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
3807 u8 *mcs;
3808 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
3809 os_memcpy(mode->mcs_set, mcs, 16);
3810 }
3811
3812 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3813 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3814 nla_len(nl_freq), freq_policy);
3815 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3816 continue;
3817 mode->num_channels++;
3818 }
3819
3820 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
3821 if (!mode->channels)
3822 return NL_SKIP;
3823
3824 idx = 0;
3825
3826 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3827 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3828 nla_len(nl_freq), freq_policy);
3829 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3830 continue;
3831
3832 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
3833 mode->channels[idx].flag = 0;
3834
3835 if (!mode_is_set) {
3836 /* crude heuristic */
3837 if (mode->channels[idx].freq < 4000)
3838 mode->mode = HOSTAPD_MODE_IEEE80211B;
3839 else
3840 mode->mode = HOSTAPD_MODE_IEEE80211A;
3841 mode_is_set = 1;
3842 }
3843
3844 /* crude heuristic */
3845 if (mode->channels[idx].freq < 4000)
3846 if (mode->channels[idx].freq == 2484)
3847 mode->channels[idx].chan = 14;
3848 else
3849 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
3850 else
3851 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
3852
3853 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3854 mode->channels[idx].flag |=
3855 HOSTAPD_CHAN_DISABLED;
3856 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
3857 mode->channels[idx].flag |=
3858 HOSTAPD_CHAN_PASSIVE_SCAN;
3859 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
3860 mode->channels[idx].flag |=
3861 HOSTAPD_CHAN_NO_IBSS;
3862 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
3863 mode->channels[idx].flag |=
3864 HOSTAPD_CHAN_RADAR;
3865
3866 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
3867 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3868 mode->channels[idx].max_tx_power =
3869 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
3870
3871 idx++;
3872 }
3873
3874 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3875 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3876 nla_len(nl_rate), rate_policy);
3877 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3878 continue;
3879 mode->num_rates++;
3880 }
3881
3882 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
3883 if (!mode->rates)
3884 return NL_SKIP;
3885
3886 idx = 0;
3887
3888 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3889 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3890 nla_len(nl_rate), rate_policy);
3891 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3892 continue;
3893 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3894
3895 /* crude heuristic */
3896 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3897 mode->rates[idx] > 200)
3898 mode->mode = HOSTAPD_MODE_IEEE80211G;
3899
3900 idx++;
3901 }
3902 }
3903
3904 return NL_SKIP;
3905 }
3906
3907 static struct hostapd_hw_modes *
3908 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3909 {
3910 u16 m;
3911 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3912 int i, mode11g_idx = -1;
3913
3914 /* If only 802.11g mode is included, use it to construct matching
3915 * 802.11b mode data. */
3916
3917 for (m = 0; m < *num_modes; m++) {
3918 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3919 return modes; /* 802.11b already included */
3920 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3921 mode11g_idx = m;
3922 }
3923
3924 if (mode11g_idx < 0)
3925 return modes; /* 2.4 GHz band not supported at all */
3926
3927 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3928 if (nmodes == NULL)
3929 return modes; /* Could not add 802.11b mode */
3930
3931 mode = &nmodes[*num_modes];
3932 os_memset(mode, 0, sizeof(*mode));
3933 (*num_modes)++;
3934 modes = nmodes;
3935
3936 mode->mode = HOSTAPD_MODE_IEEE80211B;
3937
3938 mode11g = &modes[mode11g_idx];
3939 mode->num_channels = mode11g->num_channels;
3940 mode->channels = os_malloc(mode11g->num_channels *
3941 sizeof(struct hostapd_channel_data));
3942 if (mode->channels == NULL) {
3943 (*num_modes)--;
3944 return modes; /* Could not add 802.11b mode */
3945 }
3946 os_memcpy(mode->channels, mode11g->channels,
3947 mode11g->num_channels * sizeof(struct hostapd_channel_data));
3948
3949 mode->num_rates = 0;
3950 mode->rates = os_malloc(4 * sizeof(int));
3951 if (mode->rates == NULL) {
3952 os_free(mode->channels);
3953 (*num_modes)--;
3954 return modes; /* Could not add 802.11b mode */
3955 }
3956
3957 for (i = 0; i < mode11g->num_rates; i++) {
3958 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3959 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3960 continue;
3961 mode->rates[mode->num_rates] = mode11g->rates[i];
3962 mode->num_rates++;
3963 if (mode->num_rates == 4)
3964 break;
3965 }
3966
3967 if (mode->num_rates == 0) {
3968 os_free(mode->channels);
3969 os_free(mode->rates);
3970 (*num_modes)--;
3971 return modes; /* No 802.11b rates */
3972 }
3973
3974 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3975 "information");
3976
3977 return modes;
3978 }
3979
3980
3981 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
3982 int end)
3983 {
3984 int c;
3985
3986 for (c = 0; c < mode->num_channels; c++) {
3987 struct hostapd_channel_data *chan = &mode->channels[c];
3988 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
3989 chan->flag |= HOSTAPD_CHAN_HT40;
3990 }
3991 }
3992
3993
3994 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
3995 int end)
3996 {
3997 int c;
3998
3999 for (c = 0; c < mode->num_channels; c++) {
4000 struct hostapd_channel_data *chan = &mode->channels[c];
4001 if (!(chan->flag & HOSTAPD_CHAN_HT40))
4002 continue;
4003 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
4004 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
4005 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
4006 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
4007 }
4008 }
4009
4010
4011 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
4012 struct phy_info_arg *results)
4013 {
4014 u32 start, end, max_bw;
4015 u16 m;
4016
4017 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4018 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4019 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4020 return;
4021
4022 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4023 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4024 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4025
4026 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
4027 start, end, max_bw);
4028 if (max_bw < 40)
4029 return;
4030
4031 for (m = 0; m < *results->num_modes; m++) {
4032 if (!(results->modes[m].ht_capab &
4033 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4034 continue;
4035 nl80211_set_ht40_mode(&results->modes[m], start, end);
4036 }
4037 }
4038
4039
4040 static void nl80211_reg_rule_sec(struct nlattr *tb[],
4041 struct phy_info_arg *results)
4042 {
4043 u32 start, end, max_bw;
4044 u16 m;
4045
4046 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4047 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4048 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4049 return;
4050
4051 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4052 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4053 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4054
4055 if (max_bw < 20)
4056 return;
4057
4058 for (m = 0; m < *results->num_modes; m++) {
4059 if (!(results->modes[m].ht_capab &
4060 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4061 continue;
4062 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
4063 }
4064 }
4065
4066
4067 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
4068 {
4069 struct phy_info_arg *results = arg;
4070 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4071 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4072 struct nlattr *nl_rule;
4073 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
4074 int rem_rule;
4075 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4076 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4077 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4078 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4079 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4080 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4081 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4082 };
4083
4084 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4085 genlmsg_attrlen(gnlh, 0), NULL);
4086 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
4087 !tb_msg[NL80211_ATTR_REG_RULES]) {
4088 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
4089 "available");
4090 return NL_SKIP;
4091 }
4092
4093 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
4094 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
4095
4096 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4097 {
4098 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4099 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4100 nl80211_reg_rule_ht40(tb_rule, results);
4101 }
4102
4103 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4104 {
4105 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4106 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4107 nl80211_reg_rule_sec(tb_rule, results);
4108 }
4109
4110 return NL_SKIP;
4111 }
4112
4113
4114 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
4115 struct phy_info_arg *results)
4116 {
4117 struct nl_msg *msg;
4118
4119 msg = nlmsg_alloc();
4120 if (!msg)
4121 return -ENOMEM;
4122
4123 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
4124 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
4125 }
4126
4127
4128 static struct hostapd_hw_modes *
4129 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
4130 {
4131 struct i802_bss *bss = priv;
4132 struct wpa_driver_nl80211_data *drv = bss->drv;
4133 struct nl_msg *msg;
4134 struct phy_info_arg result = {
4135 .num_modes = num_modes,
4136 .modes = NULL,
4137 };
4138
4139 *num_modes = 0;
4140 *flags = 0;
4141
4142 msg = nlmsg_alloc();
4143 if (!msg)
4144 return NULL;
4145
4146 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
4147
4148 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4149
4150 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
4151 nl80211_set_ht40_flags(drv, &result);
4152 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
4153 }
4154 nla_put_failure:
4155 return NULL;
4156 }
4157
4158
4159 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
4160 const void *data, size_t len,
4161 int encrypt, int noack)
4162 {
4163 __u8 rtap_hdr[] = {
4164 0x00, 0x00, /* radiotap version */
4165 0x0e, 0x00, /* radiotap length */
4166 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
4167 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
4168 0x00, /* padding */
4169 0x00, 0x00, /* RX and TX flags to indicate that */
4170 0x00, 0x00, /* this is the injected frame directly */
4171 };
4172 struct iovec iov[2] = {
4173 {
4174 .iov_base = &rtap_hdr,
4175 .iov_len = sizeof(rtap_hdr),
4176 },
4177 {
4178 .iov_base = (void *) data,
4179 .iov_len = len,
4180 }
4181 };
4182 struct msghdr msg = {
4183 .msg_name = NULL,
4184 .msg_namelen = 0,
4185 .msg_iov = iov,
4186 .msg_iovlen = 2,
4187 .msg_control = NULL,
4188 .msg_controllen = 0,
4189 .msg_flags = 0,
4190 };
4191 int res;
4192 u16 txflags = 0;
4193
4194 if (encrypt)
4195 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
4196
4197 if (drv->monitor_sock < 0) {
4198 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
4199 "for %s", __func__);
4200 return -1;
4201 }
4202
4203 if (noack)
4204 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
4205 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
4206
4207 res = sendmsg(drv->monitor_sock, &msg, 0);
4208 if (res < 0) {
4209 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
4210 return -1;
4211 }
4212 return 0;
4213 }
4214
4215
4216 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
4217 size_t data_len, int noack)
4218 {
4219 struct i802_bss *bss = priv;
4220 struct wpa_driver_nl80211_data *drv = bss->drv;
4221 struct ieee80211_mgmt *mgmt;
4222 int encrypt = 1;
4223 u16 fc;
4224
4225 mgmt = (struct ieee80211_mgmt *) data;
4226 fc = le_to_host16(mgmt->frame_control);
4227
4228 if (is_sta_interface(drv->nlmode) &&
4229 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4230 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
4231 /*
4232 * The use of last_mgmt_freq is a bit of a hack,
4233 * but it works due to the single-threaded nature
4234 * of wpa_supplicant.
4235 */
4236 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq, 0,
4237 data, data_len, NULL, 1, noack);
4238 }
4239
4240 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
4241 return nl80211_send_frame_cmd(drv, drv->ap_oper_freq, 0,
4242 data, data_len, NULL, 0, noack);
4243 }
4244
4245 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4246 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
4247 /*
4248 * Only one of the authentication frame types is encrypted.
4249 * In order for static WEP encryption to work properly (i.e.,
4250 * to not encrypt the frame), we need to tell mac80211 about
4251 * the frames that must not be encrypted.
4252 */
4253 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
4254 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
4255 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
4256 encrypt = 0;
4257 }
4258
4259 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt,
4260 noack);
4261 }
4262
4263
4264 static int nl80211_set_ap_isolate(struct i802_bss *bss, int enabled)
4265 {
4266 struct wpa_driver_nl80211_data *drv = bss->drv;
4267 struct nl_msg *msg;
4268
4269 msg = nlmsg_alloc();
4270 if (!msg)
4271 return -ENOMEM;
4272
4273 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4274
4275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4276 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, enabled);
4277
4278 return send_and_recv_msgs(drv, msg, NULL, NULL);
4279 nla_put_failure:
4280 return -ENOBUFS;
4281 }
4282
4283
4284 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
4285 int slot, int ht_opmode)
4286 {
4287 struct wpa_driver_nl80211_data *drv = bss->drv;
4288 struct nl_msg *msg;
4289
4290 msg = nlmsg_alloc();
4291 if (!msg)
4292 return -ENOMEM;
4293
4294 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4295
4296 if (cts >= 0)
4297 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4298 if (preamble >= 0)
4299 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4300 if (slot >= 0)
4301 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4302 if (ht_opmode >= 0)
4303 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
4304 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4305
4306 return send_and_recv_msgs(drv, msg, NULL, NULL);
4307 nla_put_failure:
4308 return -ENOBUFS;
4309 }
4310
4311
4312 static int wpa_driver_nl80211_set_ap(void *priv,
4313 struct wpa_driver_ap_params *params)
4314 {
4315 struct i802_bss *bss = priv;
4316 struct wpa_driver_nl80211_data *drv = bss->drv;
4317 struct nl_msg *msg;
4318 u8 cmd = NL80211_CMD_NEW_BEACON;
4319 int ret;
4320 int beacon_set;
4321 int ifindex = if_nametoindex(bss->ifname);
4322 int num_suites;
4323 u32 suites[10];
4324 u32 ver;
4325
4326 beacon_set = bss->beacon_set;
4327
4328 msg = nlmsg_alloc();
4329 if (!msg)
4330 return -ENOMEM;
4331
4332 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4333 beacon_set);
4334 if (beacon_set)
4335 cmd = NL80211_CMD_SET_BEACON;
4336
4337 nl80211_cmd(drv, msg, 0, cmd);
4338 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4339 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4340 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4341 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4342 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4343 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4344 params->ssid);
4345 switch (params->hide_ssid) {
4346 case NO_SSID_HIDING:
4347 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4348 NL80211_HIDDEN_SSID_NOT_IN_USE);
4349 break;
4350 case HIDDEN_SSID_ZERO_LEN:
4351 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4352 NL80211_HIDDEN_SSID_ZERO_LEN);
4353 break;
4354 case HIDDEN_SSID_ZERO_CONTENTS:
4355 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4356 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4357 break;
4358 }
4359 if (params->privacy)
4360 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4361 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4362 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4363 /* Leave out the attribute */
4364 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4365 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4366 NL80211_AUTHTYPE_SHARED_KEY);
4367 else
4368 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4369 NL80211_AUTHTYPE_OPEN_SYSTEM);
4370
4371 ver = 0;
4372 if (params->wpa_version & WPA_PROTO_WPA)
4373 ver |= NL80211_WPA_VERSION_1;
4374 if (params->wpa_version & WPA_PROTO_RSN)
4375 ver |= NL80211_WPA_VERSION_2;
4376 if (ver)
4377 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4378
4379 num_suites = 0;
4380 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4381 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4382 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4383 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4384 if (num_suites) {
4385 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4386 num_suites * sizeof(u32), suites);
4387 }
4388
4389 num_suites = 0;
4390 if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
4391 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
4392 if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
4393 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
4394 if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
4395 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
4396 if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
4397 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
4398 if (num_suites) {
4399 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4400 num_suites * sizeof(u32), suites);
4401 }
4402
4403 switch (params->group_cipher) {
4404 case WPA_CIPHER_CCMP:
4405 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4406 WLAN_CIPHER_SUITE_CCMP);
4407 break;
4408 case WPA_CIPHER_TKIP:
4409 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4410 WLAN_CIPHER_SUITE_TKIP);
4411 break;
4412 case WPA_CIPHER_WEP104:
4413 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4414 WLAN_CIPHER_SUITE_WEP104);
4415 break;
4416 case WPA_CIPHER_WEP40:
4417 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4418 WLAN_CIPHER_SUITE_WEP40);
4419 break;
4420 }
4421
4422 if (params->beacon_ies) {
4423 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4424 wpabuf_head(params->beacon_ies));
4425 }
4426 if (params->proberesp_ies) {
4427 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4428 wpabuf_len(params->proberesp_ies),
4429 wpabuf_head(params->proberesp_ies));
4430 }
4431 if (params->assocresp_ies) {
4432 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4433 wpabuf_len(params->assocresp_ies),
4434 wpabuf_head(params->assocresp_ies));
4435 }
4436
4437 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4438 if (ret) {
4439 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4440 ret, strerror(-ret));
4441 } else {
4442 bss->beacon_set = 1;
4443 ret = nl80211_set_ap_isolate(bss, params->isolate);
4444 if (!params->isolate && ret) {
4445 wpa_printf(MSG_DEBUG, "nl80211: Ignore AP isolation "
4446 "configuration error since isolation is "
4447 "not used");
4448 ret = 0;
4449 }
4450
4451 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4452 params->short_slot_time, params->ht_opmode);
4453 }
4454 return ret;
4455 nla_put_failure:
4456 return -ENOBUFS;
4457 }
4458
4459
4460 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
4461 int freq, int ht_enabled,
4462 int sec_channel_offset)
4463 {
4464 struct nl_msg *msg;
4465 int ret;
4466
4467 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
4468 "sec_channel_offset=%d)",
4469 freq, ht_enabled, sec_channel_offset);
4470 msg = nlmsg_alloc();
4471 if (!msg)
4472 return -1;
4473
4474 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
4475
4476 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4477 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4478 if (ht_enabled) {
4479 switch (sec_channel_offset) {
4480 case -1:
4481 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4482 NL80211_CHAN_HT40MINUS);
4483 break;
4484 case 1:
4485 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4486 NL80211_CHAN_HT40PLUS);
4487 break;
4488 default:
4489 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4490 NL80211_CHAN_HT20);
4491 break;
4492 }
4493 }
4494
4495 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4496 if (ret == 0)
4497 return 0;
4498 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4499 "%d (%s)", freq, ret, strerror(-ret));
4500 nla_put_failure:
4501 return -1;
4502 }
4503
4504
4505 static u32 sta_flags_nl80211(int flags)
4506 {
4507 u32 f = 0;
4508
4509 if (flags & WPA_STA_AUTHORIZED)
4510 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4511 if (flags & WPA_STA_WMM)
4512 f |= BIT(NL80211_STA_FLAG_WME);
4513 if (flags & WPA_STA_SHORT_PREAMBLE)
4514 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4515 if (flags & WPA_STA_MFP)
4516 f |= BIT(NL80211_STA_FLAG_MFP);
4517 if (flags & WPA_STA_TDLS_PEER)
4518 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4519
4520 return f;
4521 }
4522
4523
4524 static int wpa_driver_nl80211_sta_add(void *priv,
4525 struct hostapd_sta_add_params *params)
4526 {
4527 struct i802_bss *bss = priv;
4528 struct wpa_driver_nl80211_data *drv = bss->drv;
4529 struct nl_msg *msg;
4530 struct nl80211_sta_flag_update upd;
4531 int ret = -ENOBUFS;
4532
4533 if ((params->flags & WPA_STA_TDLS_PEER) &&
4534 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4535 return -EOPNOTSUPP;
4536
4537 msg = nlmsg_alloc();
4538 if (!msg)
4539 return -ENOMEM;
4540
4541 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4542 NL80211_CMD_NEW_STATION);
4543
4544 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4545 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4546 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
4547 params->supp_rates);
4548 if (!params->set) {
4549 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4550 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4551 params->listen_interval);
4552 }
4553 if (params->ht_capabilities) {
4554 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4555 sizeof(*params->ht_capabilities),
4556 params->ht_capabilities);
4557 }
4558
4559 os_memset(&upd, 0, sizeof(upd));
4560 upd.mask = sta_flags_nl80211(params->flags);
4561 upd.set = upd.mask;
4562 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4563
4564 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4565 if (ret)
4566 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4567 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4568 strerror(-ret));
4569 if (ret == -EEXIST)
4570 ret = 0;
4571 nla_put_failure:
4572 return ret;
4573 }
4574
4575
4576 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
4577 {
4578 struct i802_bss *bss = priv;
4579 struct wpa_driver_nl80211_data *drv = bss->drv;
4580 struct nl_msg *msg;
4581 int ret;
4582
4583 msg = nlmsg_alloc();
4584 if (!msg)
4585 return -ENOMEM;
4586
4587 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4588
4589 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4590 if_nametoindex(bss->ifname));
4591 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4592
4593 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4594 if (ret == -ENOENT)
4595 return 0;
4596 return ret;
4597 nla_put_failure:
4598 return -ENOBUFS;
4599 }
4600
4601
4602 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
4603 int ifidx)
4604 {
4605 struct nl_msg *msg;
4606
4607 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4608
4609 /* stop listening for EAPOL on this interface */
4610 del_ifidx(drv, ifidx);
4611
4612 msg = nlmsg_alloc();
4613 if (!msg)
4614 goto nla_put_failure;
4615
4616 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4617 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4618
4619 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4620 return;
4621 nla_put_failure:
4622 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4623 }
4624
4625
4626 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4627 {
4628 switch (mode) {
4629 case NL80211_IFTYPE_ADHOC:
4630 return "ADHOC";
4631 case NL80211_IFTYPE_STATION:
4632 return "STATION";
4633 case NL80211_IFTYPE_AP:
4634 return "AP";
4635 case NL80211_IFTYPE_MONITOR:
4636 return "MONITOR";
4637 case NL80211_IFTYPE_P2P_CLIENT:
4638 return "P2P_CLIENT";
4639 case NL80211_IFTYPE_P2P_GO:
4640 return "P2P_GO";
4641 default:
4642 return "unknown";
4643 }
4644 }
4645
4646
4647 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4648 const char *ifname,
4649 enum nl80211_iftype iftype,
4650 const u8 *addr, int wds)
4651 {
4652 struct nl_msg *msg, *flags = NULL;
4653 int ifidx;
4654 int ret = -ENOBUFS;
4655
4656 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4657 iftype, nl80211_iftype_str(iftype));
4658
4659 msg = nlmsg_alloc();
4660 if (!msg)
4661 return -1;
4662
4663 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4664 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4665 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4666 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4667
4668 if (iftype == NL80211_IFTYPE_MONITOR) {
4669 int err;
4670
4671 flags = nlmsg_alloc();
4672 if (!flags)
4673 goto nla_put_failure;
4674
4675 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
4676
4677 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
4678
4679 nlmsg_free(flags);
4680
4681 if (err)
4682 goto nla_put_failure;
4683 } else if (wds) {
4684 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4685 }
4686
4687 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4688 if (ret) {
4689 nla_put_failure:
4690 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4691 ifname, ret, strerror(-ret));
4692 return ret;
4693 }
4694
4695 ifidx = if_nametoindex(ifname);
4696 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4697 ifname, ifidx);
4698
4699 if (ifidx <= 0)
4700 return -1;
4701
4702 /* start listening for EAPOL on this interface */
4703 add_ifidx(drv, ifidx);
4704
4705 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4706 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4707 nl80211_remove_iface(drv, ifidx);
4708 return -1;
4709 }
4710
4711 return ifidx;
4712 }
4713
4714
4715 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4716 const char *ifname, enum nl80211_iftype iftype,
4717 const u8 *addr, int wds)
4718 {
4719 int ret;
4720
4721 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
4722
4723 /* if error occurred and interface exists already */
4724 if (ret == -ENFILE && if_nametoindex(ifname)) {
4725 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4726
4727 /* Try to remove the interface that was already there. */
4728 nl80211_remove_iface(drv, if_nametoindex(ifname));
4729
4730 /* Try to create the interface again */
4731 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4732 wds);
4733 }
4734
4735 if (ret >= 0 && is_p2p_interface(iftype))
4736 nl80211_disable_11b_rates(drv, ret, 1);
4737
4738 return ret;
4739 }
4740
4741
4742 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
4743 {
4744 struct ieee80211_hdr *hdr;
4745 u16 fc;
4746 union wpa_event_data event;
4747
4748 hdr = (struct ieee80211_hdr *) buf;
4749 fc = le_to_host16(hdr->frame_control);
4750
4751 os_memset(&event, 0, sizeof(event));
4752 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
4753 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
4754 event.tx_status.dst = hdr->addr1;
4755 event.tx_status.data = buf;
4756 event.tx_status.data_len = len;
4757 event.tx_status.ack = ok;
4758 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
4759 }
4760
4761
4762 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
4763 u8 *buf, size_t len)
4764 {
4765 struct ieee80211_hdr *hdr = (void *)buf;
4766 u16 fc;
4767 union wpa_event_data event;
4768
4769 if (len < sizeof(*hdr))
4770 return;
4771
4772 fc = le_to_host16(hdr->frame_control);
4773
4774 os_memset(&event, 0, sizeof(event));
4775 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
4776 event.rx_from_unknown.addr = hdr->addr2;
4777 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
4778 (WLAN_FC_FROMDS | WLAN_FC_TODS);
4779 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4780 }
4781
4782
4783 static void handle_frame(struct wpa_driver_nl80211_data *drv,
4784 u8 *buf, size_t len, int datarate, int ssi_signal)
4785 {
4786 struct ieee80211_hdr *hdr;
4787 u16 fc;
4788 union wpa_event_data event;
4789
4790 hdr = (struct ieee80211_hdr *) buf;
4791 fc = le_to_host16(hdr->frame_control);
4792
4793 switch (WLAN_FC_GET_TYPE(fc)) {
4794 case WLAN_FC_TYPE_MGMT:
4795 os_memset(&event, 0, sizeof(event));
4796 event.rx_mgmt.frame = buf;
4797 event.rx_mgmt.frame_len = len;
4798 event.rx_mgmt.datarate = datarate;
4799 event.rx_mgmt.ssi_signal = ssi_signal;
4800 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
4801 break;
4802 case WLAN_FC_TYPE_CTRL:
4803 /* can only get here with PS-Poll frames */
4804 wpa_printf(MSG_DEBUG, "CTRL");
4805 from_unknown_sta(drv, buf, len);
4806 break;
4807 case WLAN_FC_TYPE_DATA:
4808 from_unknown_sta(drv, buf, len);
4809 break;
4810 }
4811 }
4812
4813
4814 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
4815 {
4816 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4817 int len;
4818 unsigned char buf[3000];
4819 struct ieee80211_radiotap_iterator iter;
4820 int ret;
4821 int datarate = 0, ssi_signal = 0;
4822 int injected = 0, failed = 0, rxflags = 0;
4823
4824 len = recv(sock, buf, sizeof(buf), 0);
4825 if (len < 0) {
4826 perror("recv");
4827 return;
4828 }
4829
4830 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
4831 printf("received invalid radiotap frame\n");
4832 return;
4833 }
4834
4835 while (1) {
4836 ret = ieee80211_radiotap_iterator_next(&iter);
4837 if (ret == -ENOENT)
4838 break;
4839 if (ret) {
4840 printf("received invalid radiotap frame (%d)\n", ret);
4841 return;
4842 }
4843 switch (iter.this_arg_index) {
4844 case IEEE80211_RADIOTAP_FLAGS:
4845 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
4846 len -= 4;
4847 break;
4848 case IEEE80211_RADIOTAP_RX_FLAGS:
4849 rxflags = 1;
4850 break;
4851 case IEEE80211_RADIOTAP_TX_FLAGS:
4852 injected = 1;
4853 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
4854 IEEE80211_RADIOTAP_F_TX_FAIL;
4855 break;
4856 case IEEE80211_RADIOTAP_DATA_RETRIES:
4857 break;
4858 case IEEE80211_RADIOTAP_CHANNEL:
4859 /* TODO: convert from freq/flags to channel number */
4860 break;
4861 case IEEE80211_RADIOTAP_RATE:
4862 datarate = *iter.this_arg * 5;
4863 break;
4864 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
4865 ssi_signal = *iter.this_arg;
4866 break;
4867 }
4868 }
4869
4870 if (rxflags && injected)
4871 return;
4872
4873 if (!injected)
4874 handle_frame(drv, buf + iter.max_length,
4875 len - iter.max_length, datarate, ssi_signal);
4876 else
4877 handle_tx_callback(drv->ctx, buf + iter.max_length,
4878 len - iter.max_length, !failed);
4879 }
4880
4881
4882 /*
4883 * we post-process the filter code later and rewrite
4884 * this to the offset to the last instruction
4885 */
4886 #define PASS 0xFF
4887 #define FAIL 0xFE
4888
4889 static struct sock_filter msock_filter_insns[] = {
4890 /*
4891 * do a little-endian load of the radiotap length field
4892 */
4893 /* load lower byte into A */
4894 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
4895 /* put it into X (== index register) */
4896 BPF_STMT(BPF_MISC| BPF_TAX, 0),
4897 /* load upper byte into A */
4898 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
4899 /* left-shift it by 8 */
4900 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
4901 /* or with X */
4902 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
4903 /* put result into X */
4904 BPF_STMT(BPF_MISC| BPF_TAX, 0),
4905
4906 /*
4907 * Allow management frames through, this also gives us those
4908 * management frames that we sent ourselves with status
4909 */
4910 /* load the lower byte of the IEEE 802.11 frame control field */
4911 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4912 /* mask off frame type and version */
4913 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
4914 /* accept frame if it's both 0, fall through otherwise */
4915 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
4916
4917 /*
4918 * TODO: add a bit to radiotap RX flags that indicates
4919 * that the sending station is not associated, then
4920 * add a filter here that filters on our DA and that flag
4921 * to allow us to deauth frames to that bad station.
4922 *
4923 * For now allow all To DS data frames through.
4924 */
4925 /* load the IEEE 802.11 frame control field */
4926 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
4927 /* mask off frame type, version and DS status */
4928 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
4929 /* accept frame if version 0, type 2 and To DS, fall through otherwise
4930 */
4931 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
4932
4933 #if 0
4934 /*
4935 * drop non-data frames
4936 */
4937 /* load the lower byte of the frame control field */
4938 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4939 /* mask off QoS bit */
4940 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
4941 /* drop non-data frames */
4942 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
4943 #endif
4944 /* load the upper byte of the frame control field */
4945 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
4946 /* mask off toDS/fromDS */
4947 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
4948 /* accept WDS frames */
4949 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
4950
4951 /*
4952 * add header length to index
4953 */
4954 /* load the lower byte of the frame control field */
4955 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4956 /* mask off QoS bit */
4957 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
4958 /* right shift it by 6 to give 0 or 2 */
4959 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
4960 /* add data frame header length */
4961 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
4962 /* add index, was start of 802.11 header */
4963 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
4964 /* move to index, now start of LL header */
4965 BPF_STMT(BPF_MISC | BPF_TAX, 0),
4966
4967 /*
4968 * Accept empty data frames, we use those for
4969 * polling activity.
4970 */
4971 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
4972 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
4973
4974 /*
4975 * Accept EAPOL frames
4976 */
4977 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
4978 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
4979 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
4980 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
4981
4982 /* keep these last two statements or change the code below */
4983 /* return 0 == "DROP" */
4984 BPF_STMT(BPF_RET | BPF_K, 0),
4985 /* return ~0 == "keep all" */
4986 BPF_STMT(BPF_RET | BPF_K, ~0),
4987 };
4988
4989 static struct sock_fprog msock_filter = {
4990 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
4991 .filter = msock_filter_insns,
4992 };
4993
4994
4995 static int add_monitor_filter(int s)
4996 {
4997 int idx;
4998
4999 /* rewrite all PASS/FAIL jump offsets */
5000 for (idx = 0; idx < msock_filter.len; idx++) {
5001 struct sock_filter *insn = &msock_filter_insns[idx];
5002
5003 if (BPF_CLASS(insn->code) == BPF_JMP) {
5004 if (insn->code == (BPF_JMP|BPF_JA)) {
5005 if (insn->k == PASS)
5006 insn->k = msock_filter.len - idx - 2;
5007 else if (insn->k == FAIL)
5008 insn->k = msock_filter.len - idx - 3;
5009 }
5010
5011 if (insn->jt == PASS)
5012 insn->jt = msock_filter.len - idx - 2;
5013 else if (insn->jt == FAIL)
5014 insn->jt = msock_filter.len - idx - 3;
5015
5016 if (insn->jf == PASS)
5017 insn->jf = msock_filter.len - idx - 2;
5018 else if (insn->jf == FAIL)
5019 insn->jf = msock_filter.len - idx - 3;
5020 }
5021 }
5022
5023 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
5024 &msock_filter, sizeof(msock_filter))) {
5025 perror("SO_ATTACH_FILTER");
5026 return -1;
5027 }
5028
5029 return 0;
5030 }
5031
5032
5033 static void nl80211_remove_monitor_interface(
5034 struct wpa_driver_nl80211_data *drv)
5035 {
5036 if (drv->monitor_ifidx >= 0) {
5037 nl80211_remove_iface(drv, drv->monitor_ifidx);
5038 drv->monitor_ifidx = -1;
5039 }
5040 if (drv->monitor_sock >= 0) {
5041 eloop_unregister_read_sock(drv->monitor_sock);
5042 close(drv->monitor_sock);
5043 drv->monitor_sock = -1;
5044 }
5045 }
5046
5047
5048 static int
5049 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
5050 {
5051 char buf[IFNAMSIZ];
5052 struct sockaddr_ll ll;
5053 int optval;
5054 socklen_t optlen;
5055
5056 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
5057 /*
5058 * P2P interface name is of the format p2p-%s-%d. For monitor
5059 * interface name corresponding to P2P GO, replace "p2p-" with
5060 * "mon-" to retain the same interface name length and to
5061 * indicate that it is a monitor interface.
5062 */
5063 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
5064 } else {
5065 /* Non-P2P interface with AP functionality. */
5066 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
5067 }
5068
5069 buf[IFNAMSIZ - 1] = '\0';
5070
5071 drv->monitor_ifidx =
5072 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
5073 0);
5074
5075 if (drv->monitor_ifidx == -EOPNOTSUPP) {
5076 /*
5077 * This is backward compatibility for a few versions of
5078 * the kernel only that didn't advertise the right
5079 * attributes for the only driver that then supported
5080 * AP mode w/o monitor -- ath6kl.
5081 */
5082 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
5083 "monitor interface type - try to run without it");
5084 drv->device_ap_sme = 1;
5085 }
5086
5087 if (drv->monitor_ifidx < 0)
5088 return -1;
5089
5090 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
5091 goto error;
5092
5093 memset(&ll, 0, sizeof(ll));
5094 ll.sll_family = AF_PACKET;
5095 ll.sll_ifindex = drv->monitor_ifidx;
5096 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
5097 if (drv->monitor_sock < 0) {
5098 perror("socket[PF_PACKET,SOCK_RAW]");
5099 goto error;
5100 }
5101
5102 if (add_monitor_filter(drv->monitor_sock)) {
5103 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
5104 "interface; do filtering in user space");
5105 /* This works, but will cost in performance. */
5106 }
5107
5108 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
5109 perror("monitor socket bind");
5110 goto error;
5111 }
5112
5113 optlen = sizeof(optval);
5114 optval = 20;
5115 if (setsockopt
5116 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
5117 perror("Failed to set socket priority");
5118 goto error;
5119 }
5120
5121 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
5122 drv, NULL)) {
5123 printf("Could not register monitor read socket\n");
5124 goto error;
5125 }
5126
5127 return 0;
5128 error:
5129 nl80211_remove_monitor_interface(drv);
5130 return -1;
5131 }
5132
5133
5134 #ifdef CONFIG_AP
5135 static int nl80211_send_eapol_data(struct i802_bss *bss,
5136 const u8 *addr, const u8 *data,
5137 size_t data_len)
5138 {
5139 struct sockaddr_ll ll;
5140 int ret;
5141
5142 if (bss->drv->eapol_tx_sock < 0) {
5143 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
5144 return -1;
5145 }
5146
5147 os_memset(&ll, 0, sizeof(ll));
5148 ll.sll_family = AF_PACKET;
5149 ll.sll_ifindex = bss->ifindex;
5150 ll.sll_protocol = htons(ETH_P_PAE);
5151 ll.sll_halen = ETH_ALEN;
5152 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
5153 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
5154 (struct sockaddr *) &ll, sizeof(ll));
5155 if (ret < 0)
5156 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
5157 strerror(errno));
5158
5159 return ret;
5160 }
5161 #endif /* CONFIG_AP */
5162
5163
5164 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
5165
5166 static int wpa_driver_nl80211_hapd_send_eapol(
5167 void *priv, const u8 *addr, const u8 *data,
5168 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
5169 {
5170 struct i802_bss *bss = priv;
5171 struct wpa_driver_nl80211_data *drv = bss->drv;
5172 struct ieee80211_hdr *hdr;
5173 size_t len;
5174 u8 *pos;
5175 int res;
5176 int qos = flags & WPA_STA_WMM;
5177
5178 #ifdef CONFIG_AP
5179 if (drv->device_ap_sme)
5180 return nl80211_send_eapol_data(bss, addr, data, data_len);
5181 #endif /* CONFIG_AP */
5182
5183 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
5184 data_len;
5185 hdr = os_zalloc(len);
5186 if (hdr == NULL) {
5187 printf("malloc() failed for i802_send_data(len=%lu)\n",
5188 (unsigned long) len);
5189 return -1;
5190 }
5191
5192 hdr->frame_control =
5193 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
5194 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
5195 if (encrypt)
5196 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
5197 if (qos) {
5198 hdr->frame_control |=
5199 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
5200 }
5201
5202 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
5203 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
5204 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
5205 pos = (u8 *) (hdr + 1);
5206
5207 if (qos) {
5208 /* add an empty QoS header if needed */
5209 pos[0] = 0;
5210 pos[1] = 0;
5211 pos += 2;
5212 }
5213
5214 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
5215 pos += sizeof(rfc1042_header);
5216 WPA_PUT_BE16(pos, ETH_P_PAE);
5217 pos += 2;
5218 memcpy(pos, data, data_len);
5219
5220 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
5221 if (res < 0) {
5222 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
5223 "failed: %d (%s)",
5224 (unsigned long) len, errno, strerror(errno));
5225 }
5226 os_free(hdr);
5227
5228 return res;
5229 }
5230
5231
5232 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
5233 int total_flags,
5234 int flags_or, int flags_and)
5235 {
5236 struct i802_bss *bss = priv;
5237 struct wpa_driver_nl80211_data *drv = bss->drv;
5238 struct nl_msg *msg, *flags = NULL;
5239 struct nl80211_sta_flag_update upd;
5240
5241 msg = nlmsg_alloc();
5242 if (!msg)
5243 return -ENOMEM;
5244
5245 flags = nlmsg_alloc();
5246 if (!flags) {
5247 nlmsg_free(msg);
5248 return -ENOMEM;
5249 }
5250
5251 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5252
5253 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5254 if_nametoindex(bss->ifname));
5255 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5256
5257 /*
5258 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
5259 * can be removed eventually.
5260 */
5261 if (total_flags & WPA_STA_AUTHORIZED)
5262 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
5263
5264 if (total_flags & WPA_STA_WMM)
5265 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
5266
5267 if (total_flags & WPA_STA_SHORT_PREAMBLE)
5268 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
5269
5270 if (total_flags & WPA_STA_MFP)
5271 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
5272
5273 if (total_flags & WPA_STA_TDLS_PEER)
5274 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
5275
5276 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
5277 goto nla_put_failure;
5278
5279 os_memset(&upd, 0, sizeof(upd));
5280 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
5281 upd.set = sta_flags_nl80211(flags_or);
5282 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5283
5284 nlmsg_free(flags);
5285
5286 return send_and_recv_msgs(drv, msg, NULL, NULL);
5287 nla_put_failure:
5288 nlmsg_free(flags);
5289 return -ENOBUFS;
5290 }
5291
5292
5293 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5294 struct wpa_driver_associate_params *params)
5295 {
5296 enum nl80211_iftype nlmode;
5297
5298 if (params->p2p) {
5299 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5300 "group (GO)");
5301 nlmode = NL80211_IFTYPE_P2P_GO;
5302 } else
5303 nlmode = NL80211_IFTYPE_AP;
5304
5305 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
5306 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
5307 nl80211_remove_monitor_interface(drv);
5308 return -1;
5309 }
5310
5311 if (drv->device_ap_sme) {
5312 if (wpa_driver_nl80211_probe_req_report(&drv->first_bss, 1) < 0)
5313 {
5314 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
5315 "Probe Request frame reporting in AP mode");
5316 /* Try to survive without this */
5317 }
5318 }
5319
5320 drv->ap_oper_freq = params->freq;
5321
5322 return 0;
5323 }
5324
5325
5326 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5327 {
5328 struct nl_msg *msg;
5329 int ret = -1;
5330
5331 msg = nlmsg_alloc();
5332 if (!msg)
5333 return -1;
5334
5335 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5336 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5337 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5338 msg = NULL;
5339 if (ret) {
5340 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5341 "(%s)", ret, strerror(-ret));
5342 goto nla_put_failure;
5343 }
5344
5345 ret = 0;
5346 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5347
5348 nla_put_failure:
5349 nlmsg_free(msg);
5350 return ret;
5351 }
5352
5353
5354 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5355 struct wpa_driver_associate_params *params)
5356 {
5357 struct nl_msg *msg;
5358 int ret = -1;
5359 int count = 0;
5360
5361 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5362
5363 if (wpa_driver_nl80211_set_mode(&drv->first_bss,
5364 NL80211_IFTYPE_ADHOC)) {
5365 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5366 "IBSS mode");
5367 return -1;
5368 }
5369
5370 retry:
5371 msg = nlmsg_alloc();
5372 if (!msg)
5373 return -1;
5374
5375 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5376 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5377
5378 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5379 goto nla_put_failure;
5380
5381 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5382 params->ssid, params->ssid_len);
5383 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5384 params->ssid);
5385 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5386 drv->ssid_len = params->ssid_len;
5387
5388 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5389 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5390
5391 ret = nl80211_set_conn_keys(params, msg);
5392 if (ret)
5393 goto nla_put_failure;
5394
5395 if (params->wpa_ie) {
5396 wpa_hexdump(MSG_DEBUG,
5397 " * Extra IEs for Beacon/Probe Response frames",
5398 params->wpa_ie, params->wpa_ie_len);
5399 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5400 params->wpa_ie);
5401 }
5402
5403 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5404 msg = NULL;
5405 if (ret) {
5406 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5407 ret, strerror(-ret));
5408 count++;
5409 if (ret == -EALREADY && count == 1) {
5410 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5411 "forced leave");
5412 nl80211_leave_ibss(drv);
5413 nlmsg_free(msg);
5414 goto retry;
5415 }
5416
5417 goto nla_put_failure;
5418 }
5419 ret = 0;
5420 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5421
5422 nla_put_failure:
5423 nlmsg_free(msg);
5424 return ret;
5425 }
5426
5427
5428 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
5429 u8 *bssid)
5430 {
5431 struct nl_msg *msg;
5432 int ret;
5433 struct nl80211_bss_info_arg arg;
5434
5435 os_memset(&arg, 0, sizeof(arg));
5436 msg = nlmsg_alloc();
5437 if (!msg)
5438 goto nla_put_failure;
5439
5440 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
5441 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5442
5443 arg.drv = drv;
5444 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
5445 msg = NULL;
5446 if (ret == 0) {
5447 if (is_zero_ether_addr(arg.assoc_bssid))
5448 return -ENOTCONN;
5449 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
5450 return 0;
5451 }
5452 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
5453 "(%s)", ret, strerror(-ret));
5454 nla_put_failure:
5455 nlmsg_free(msg);
5456 return drv->assoc_freq;
5457 }
5458
5459
5460 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
5461 const u8 *bssid)
5462 {
5463 u8 addr[ETH_ALEN];
5464
5465 if (bssid == NULL) {
5466 int res = nl80211_get_assoc_bssid(drv, addr);
5467 if (res)
5468 return res;
5469 bssid = addr;
5470 }
5471
5472 return wpa_driver_nl80211_disconnect(drv, bssid,
5473 WLAN_REASON_PREV_AUTH_NOT_VALID);
5474 }
5475
5476
5477 static int wpa_driver_nl80211_connect(
5478 struct wpa_driver_nl80211_data *drv,
5479 struct wpa_driver_associate_params *params)
5480 {
5481 struct nl_msg *msg;
5482 enum nl80211_auth_type type;
5483 int ret = 0;
5484 int algs;
5485
5486 msg = nlmsg_alloc();
5487 if (!msg)
5488 return -1;
5489
5490 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5491 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5492
5493 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5494 if (params->bssid) {
5495 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5496 MAC2STR(params->bssid));
5497 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5498 }
5499 if (params->freq) {
5500 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5501 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5502 }
5503 if (params->ssid) {
5504 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5505 params->ssid, params->ssid_len);
5506 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5507 params->ssid);
5508 if (params->ssid_len > sizeof(drv->ssid))
5509 goto nla_put_failure;
5510 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5511 drv->ssid_len = params->ssid_len;
5512 }
5513 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5514 if (params->wpa_ie)
5515 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5516 params->wpa_ie);
5517
5518 algs = 0;
5519 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5520 algs++;
5521 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5522 algs++;
5523 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5524 algs++;
5525 if (algs > 1) {
5526 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
5527 "selection");
5528 goto skip_auth_type;
5529 }
5530
5531 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5532 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5533 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5534 type = NL80211_AUTHTYPE_SHARED_KEY;
5535 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5536 type = NL80211_AUTHTYPE_NETWORK_EAP;
5537 else if (params->auth_alg & WPA_AUTH_ALG_FT)
5538 type = NL80211_AUTHTYPE_FT;
5539 else
5540 goto nla_put_failure;
5541
5542 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
5543 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5544
5545 skip_auth_type:
5546 if (params->wpa_proto) {
5547 enum nl80211_wpa_versions ver = 0;
5548
5549 if (params->wpa_proto & WPA_PROTO_WPA)
5550 ver |= NL80211_WPA_VERSION_1;
5551 if (params->wpa_proto & WPA_PROTO_RSN)
5552 ver |= NL80211_WPA_VERSION_2;
5553
5554 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
5555 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5556 }
5557
5558 if (params->pairwise_suite != CIPHER_NONE) {
5559 int cipher;
5560
5561 switch (params->pairwise_suite) {
5562 case CIPHER_WEP40:
5563 cipher = WLAN_CIPHER_SUITE_WEP40;
5564 break;
5565 case CIPHER_WEP104:
5566 cipher = WLAN_CIPHER_SUITE_WEP104;
5567 break;
5568 case CIPHER_CCMP:
5569 cipher = WLAN_CIPHER_SUITE_CCMP;
5570 break;
5571 case CIPHER_TKIP:
5572 default:
5573 cipher = WLAN_CIPHER_SUITE_TKIP;
5574 break;
5575 }
5576 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5577 }
5578
5579 if (params->group_suite != CIPHER_NONE) {
5580 int cipher;
5581
5582 switch (params->group_suite) {
5583 case CIPHER_WEP40:
5584 cipher = WLAN_CIPHER_SUITE_WEP40;
5585 break;
5586 case CIPHER_WEP104:
5587 cipher = WLAN_CIPHER_SUITE_WEP104;
5588 break;
5589 case CIPHER_CCMP:
5590 cipher = WLAN_CIPHER_SUITE_CCMP;
5591 break;
5592 case CIPHER_TKIP:
5593 default:
5594 cipher = WLAN_CIPHER_SUITE_TKIP;
5595 break;
5596 }
5597 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5598 }
5599
5600 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
5601 params->key_mgmt_suite == KEY_MGMT_PSK) {
5602 int mgmt = WLAN_AKM_SUITE_PSK;
5603
5604 switch (params->key_mgmt_suite) {
5605 case KEY_MGMT_802_1X:
5606 mgmt = WLAN_AKM_SUITE_8021X;
5607 break;
5608 case KEY_MGMT_PSK:
5609 default:
5610 mgmt = WLAN_AKM_SUITE_PSK;
5611 break;
5612 }
5613 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5614 }
5615
5616 ret = nl80211_set_conn_keys(params, msg);
5617 if (ret)
5618 goto nla_put_failure;
5619
5620 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5621 msg = NULL;
5622 if (ret) {
5623 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5624 "(%s)", ret, strerror(-ret));
5625 /*
5626 * cfg80211 does not currently accept new connection if we are
5627 * already connected. As a workaround, force disconnection and
5628 * try again once the driver indicates it completed
5629 * disconnection.
5630 */
5631 if (ret == -EALREADY)
5632 nl80211_disconnect(drv, params->bssid);
5633 goto nla_put_failure;
5634 }
5635 ret = 0;
5636 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5637
5638 nla_put_failure:
5639 nlmsg_free(msg);
5640 return ret;
5641
5642 }
5643
5644
5645 static int wpa_driver_nl80211_associate(
5646 void *priv, struct wpa_driver_associate_params *params)
5647 {
5648 struct i802_bss *bss = priv;
5649 struct wpa_driver_nl80211_data *drv = bss->drv;
5650 int ret = -1;
5651 struct nl_msg *msg;
5652
5653 if (params->mode == IEEE80211_MODE_AP)
5654 return wpa_driver_nl80211_ap(drv, params);
5655
5656 if (params->mode == IEEE80211_MODE_IBSS)
5657 return wpa_driver_nl80211_ibss(drv, params);
5658
5659 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5660 enum nl80211_iftype nlmode = params->p2p ?
5661 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5662
5663 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5664 return -1;
5665 return wpa_driver_nl80211_connect(drv, params);
5666 }
5667
5668 drv->associated = 0;
5669
5670 msg = nlmsg_alloc();
5671 if (!msg)
5672 return -1;
5673
5674 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5675 drv->ifindex);
5676 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5677
5678 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5679 if (params->bssid) {
5680 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5681 MAC2STR(params->bssid));
5682 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5683 }
5684 if (params->freq) {
5685 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5686 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5687 drv->assoc_freq = params->freq;
5688 } else
5689 drv->assoc_freq = 0;
5690 if (params->ssid) {
5691 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5692 params->ssid, params->ssid_len);
5693 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5694 params->ssid);
5695 if (params->ssid_len > sizeof(drv->ssid))
5696 goto nla_put_failure;
5697 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5698 drv->ssid_len = params->ssid_len;
5699 }
5700 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5701 if (params->wpa_ie)
5702 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5703 params->wpa_ie);
5704
5705 if (params->pairwise_suite != CIPHER_NONE) {
5706 int cipher;
5707
5708 switch (params->pairwise_suite) {
5709 case CIPHER_WEP40:
5710 cipher = WLAN_CIPHER_SUITE_WEP40;
5711 break;
5712 case CIPHER_WEP104:
5713 cipher = WLAN_CIPHER_SUITE_WEP104;
5714 break;
5715 case CIPHER_CCMP:
5716 cipher = WLAN_CIPHER_SUITE_CCMP;
5717 break;
5718 case CIPHER_TKIP:
5719 default:
5720 cipher = WLAN_CIPHER_SUITE_TKIP;
5721 break;
5722 }
5723 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
5724 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5725 }
5726
5727 if (params->group_suite != CIPHER_NONE) {
5728 int cipher;
5729
5730 switch (params->group_suite) {
5731 case CIPHER_WEP40:
5732 cipher = WLAN_CIPHER_SUITE_WEP40;
5733 break;
5734 case CIPHER_WEP104:
5735 cipher = WLAN_CIPHER_SUITE_WEP104;
5736 break;
5737 case CIPHER_CCMP:
5738 cipher = WLAN_CIPHER_SUITE_CCMP;
5739 break;
5740 case CIPHER_TKIP:
5741 default:
5742 cipher = WLAN_CIPHER_SUITE_TKIP;
5743 break;
5744 }
5745 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
5746 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5747 }
5748
5749 #ifdef CONFIG_IEEE80211W
5750 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5751 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5752 #endif /* CONFIG_IEEE80211W */
5753
5754 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5755
5756 if (params->prev_bssid) {
5757 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
5758 MAC2STR(params->prev_bssid));
5759 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5760 params->prev_bssid);
5761 }
5762
5763 if (params->p2p)
5764 wpa_printf(MSG_DEBUG, " * P2P group");
5765
5766 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5767 msg = NULL;
5768 if (ret) {
5769 wpa_dbg(drv->ctx, MSG_DEBUG,
5770 "nl80211: MLME command failed (assoc): ret=%d (%s)",
5771 ret, strerror(-ret));
5772 nl80211_dump_scan(drv);
5773 goto nla_put_failure;
5774 }
5775 ret = 0;
5776 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5777 "successfully");
5778
5779 nla_put_failure:
5780 nlmsg_free(msg);
5781 return ret;
5782 }
5783
5784
5785 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5786 int ifindex, enum nl80211_iftype mode)
5787 {
5788 struct nl_msg *msg;
5789 int ret = -ENOBUFS;
5790
5791 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5792 ifindex, mode, nl80211_iftype_str(mode));
5793
5794 msg = nlmsg_alloc();
5795 if (!msg)
5796 return -ENOMEM;
5797
5798 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5799 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5800 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5801
5802 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5803 if (!ret)
5804 return 0;
5805 nla_put_failure:
5806 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5807 " %d (%s)", ifindex, mode, ret, strerror(-ret));
5808 return ret;
5809 }
5810
5811
5812 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5813 enum nl80211_iftype nlmode)
5814 {
5815 struct wpa_driver_nl80211_data *drv = bss->drv;
5816 int ret = -1;
5817 int i;
5818 int was_ap = is_ap_interface(drv->nlmode);
5819
5820 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
5821 drv->nlmode = nlmode;
5822 ret = 0;
5823 goto done;
5824 }
5825
5826 if (nlmode == drv->nlmode) {
5827 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5828 "requested mode - ignore error");
5829 ret = 0;
5830 goto done; /* Already in the requested mode */
5831 }
5832
5833 /* mac80211 doesn't allow mode changes while the device is up, so
5834 * take the device down, try to set the mode again, and bring the
5835 * device back up.
5836 */
5837 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5838 "interface down");
5839 for (i = 0; i < 10; i++) {
5840 int res;
5841 res = linux_set_iface_flags(drv->global->ioctl_sock,
5842 bss->ifname, 0);
5843 if (res == -EACCES || res == -ENODEV)
5844 break;
5845 if (res == 0) {
5846 /* Try to set the mode again while the interface is
5847 * down */
5848 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
5849 if (ret == -EACCES)
5850 break;
5851 res = linux_set_iface_flags(drv->global->ioctl_sock,
5852 bss->ifname, 1);
5853 if (res && !ret)
5854 ret = -1;
5855 else if (ret != -EBUSY)
5856 break;
5857 } else
5858 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5859 "interface down");
5860 os_sleep(0, 100000);
5861 }
5862
5863 if (!ret) {
5864 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5865 "interface is down");
5866 drv->nlmode = nlmode;
5867 drv->ignore_if_down_event = 1;
5868 }
5869
5870 done:
5871 if (!ret && is_ap_interface(nlmode)) {
5872 /* Setup additional AP mode functionality if needed */
5873 if (!drv->device_ap_sme && drv->monitor_ifidx < 0 &&
5874 nl80211_create_monitor_interface(drv) &&
5875 !drv->device_ap_sme)
5876 return -1;
5877 } else if (!ret && !is_ap_interface(nlmode)) {
5878 /* Remove additional AP mode functionality */
5879 if (was_ap && drv->device_ap_sme)
5880 wpa_driver_nl80211_probe_req_report(bss, 0);
5881 nl80211_remove_monitor_interface(drv);
5882 bss->beacon_set = 0;
5883 }
5884
5885 if (!ret && is_p2p_interface(drv->nlmode)) {
5886 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5887 drv->disabled_11b_rates = 1;
5888 } else if (!ret && drv->disabled_11b_rates) {
5889 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5890 drv->disabled_11b_rates = 0;
5891 }
5892
5893 if (ret)
5894 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5895 "from %d failed", nlmode, drv->nlmode);
5896
5897 return ret;
5898 }
5899
5900
5901 static int wpa_driver_nl80211_get_capa(void *priv,
5902 struct wpa_driver_capa *capa)
5903 {
5904 struct i802_bss *bss = priv;
5905 struct wpa_driver_nl80211_data *drv = bss->drv;
5906 if (!drv->has_capability)
5907 return -1;
5908 os_memcpy(capa, &drv->capa, sizeof(*capa));
5909 return 0;
5910 }
5911
5912
5913 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5914 {
5915 struct i802_bss *bss = priv;
5916 struct wpa_driver_nl80211_data *drv = bss->drv;
5917
5918 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
5919 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
5920 drv->operstate = state;
5921 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5922 state ? IF_OPER_UP : IF_OPER_DORMANT);
5923 }
5924
5925
5926 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5927 {
5928 struct i802_bss *bss = priv;
5929 struct wpa_driver_nl80211_data *drv = bss->drv;
5930 struct nl_msg *msg;
5931 struct nl80211_sta_flag_update upd;
5932
5933 msg = nlmsg_alloc();
5934 if (!msg)
5935 return -ENOMEM;
5936
5937 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5938
5939 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5940 if_nametoindex(bss->ifname));
5941 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5942
5943 os_memset(&upd, 0, sizeof(upd));
5944 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5945 if (authorized)
5946 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5947 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5948
5949 return send_and_recv_msgs(drv, msg, NULL, NULL);
5950 nla_put_failure:
5951 return -ENOBUFS;
5952 }
5953
5954
5955 /* Set kernel driver on given frequency (MHz) */
5956 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5957 {
5958 struct i802_bss *bss = priv;
5959 struct wpa_driver_nl80211_data *drv = bss->drv;
5960 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
5961 freq->sec_channel_offset);
5962 }
5963
5964
5965 #if defined(HOSTAPD) || defined(CONFIG_AP)
5966
5967 static inline int min_int(int a, int b)
5968 {
5969 if (a < b)
5970 return a;
5971 return b;
5972 }
5973
5974
5975 static int get_key_handler(struct nl_msg *msg, void *arg)
5976 {
5977 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5978 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5979
5980 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5981 genlmsg_attrlen(gnlh, 0), NULL);
5982
5983 /*
5984 * TODO: validate the key index and mac address!
5985 * Otherwise, there's a race condition as soon as
5986 * the kernel starts sending key notifications.
5987 */
5988
5989 if (tb[NL80211_ATTR_KEY_SEQ])
5990 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5991 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5992 return NL_SKIP;
5993 }
5994
5995
5996 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5997 int idx, u8 *seq)
5998 {
5999 struct i802_bss *bss = priv;
6000 struct wpa_driver_nl80211_data *drv = bss->drv;
6001 struct nl_msg *msg;
6002
6003 msg = nlmsg_alloc();
6004 if (!msg)
6005 return -ENOMEM;
6006
6007 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
6008
6009 if (addr)
6010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6011 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
6012 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
6013
6014 memset(seq, 0, 6);
6015
6016 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
6017 nla_put_failure:
6018 return -ENOBUFS;
6019 }
6020
6021
6022 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
6023 int mode)
6024 {
6025 struct i802_bss *bss = priv;
6026 struct wpa_driver_nl80211_data *drv = bss->drv;
6027 struct nl_msg *msg;
6028 u8 rates[NL80211_MAX_SUPP_RATES];
6029 u8 rates_len = 0;
6030 int i;
6031
6032 msg = nlmsg_alloc();
6033 if (!msg)
6034 return -ENOMEM;
6035
6036 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
6037
6038 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
6039 rates[rates_len++] = basic_rates[i] / 5;
6040
6041 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
6042
6043 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6044
6045 return send_and_recv_msgs(drv, msg, NULL, NULL);
6046 nla_put_failure:
6047 return -ENOBUFS;
6048 }
6049
6050
6051 static int i802_set_rts(void *priv, int rts)
6052 {
6053 struct i802_bss *bss = priv;
6054 struct wpa_driver_nl80211_data *drv = bss->drv;
6055 struct nl_msg *msg;
6056 int ret = -ENOBUFS;
6057 u32 val;
6058
6059 msg = nlmsg_alloc();
6060 if (!msg)
6061 return -ENOMEM;
6062
6063 if (rts >= 2347)
6064 val = (u32) -1;
6065 else
6066 val = rts;
6067
6068 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6069 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6070 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
6071
6072 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6073 if (!ret)
6074 return 0;
6075 nla_put_failure:
6076 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
6077 "%d (%s)", rts, ret, strerror(-ret));
6078 return ret;
6079 }
6080
6081
6082 static int i802_set_frag(void *priv, int frag)
6083 {
6084 struct i802_bss *bss = priv;
6085 struct wpa_driver_nl80211_data *drv = bss->drv;
6086 struct nl_msg *msg;
6087 int ret = -ENOBUFS;
6088 u32 val;
6089
6090 msg = nlmsg_alloc();
6091 if (!msg)
6092 return -ENOMEM;
6093
6094 if (frag >= 2346)
6095 val = (u32) -1;
6096 else
6097 val = frag;
6098
6099 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6100 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6101 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
6102
6103 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6104 if (!ret)
6105 return 0;
6106 nla_put_failure:
6107 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
6108 "%d: %d (%s)", frag, ret, strerror(-ret));
6109 return ret;
6110 }
6111
6112
6113 static int i802_flush(void *priv)
6114 {
6115 struct i802_bss *bss = priv;
6116 struct wpa_driver_nl80211_data *drv = bss->drv;
6117 struct nl_msg *msg;
6118
6119 msg = nlmsg_alloc();
6120 if (!msg)
6121 return -1;
6122
6123 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
6124
6125 /*
6126 * XXX: FIX! this needs to flush all VLANs too
6127 */
6128 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6129 if_nametoindex(bss->ifname));
6130
6131 return send_and_recv_msgs(drv, msg, NULL, NULL);
6132 nla_put_failure:
6133 return -ENOBUFS;
6134 }
6135
6136
6137 static int get_sta_handler(struct nl_msg *msg, void *arg)
6138 {
6139 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6140 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6141 struct hostap_sta_driver_data *data = arg;
6142 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
6143 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
6144 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
6145 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
6146 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
6147 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
6148 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
6149 };
6150
6151 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6152 genlmsg_attrlen(gnlh, 0), NULL);
6153
6154 /*
6155 * TODO: validate the interface and mac address!
6156 * Otherwise, there's a race condition as soon as
6157 * the kernel starts sending station notifications.
6158 */
6159
6160 if (!tb[NL80211_ATTR_STA_INFO]) {
6161 wpa_printf(MSG_DEBUG, "sta stats missing!");
6162 return NL_SKIP;
6163 }
6164 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
6165 tb[NL80211_ATTR_STA_INFO],
6166 stats_policy)) {
6167 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
6168 return NL_SKIP;
6169 }
6170
6171 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
6172 data->inactive_msec =
6173 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
6174 if (stats[NL80211_STA_INFO_RX_BYTES])
6175 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
6176 if (stats[NL80211_STA_INFO_TX_BYTES])
6177 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
6178 if (stats[NL80211_STA_INFO_RX_PACKETS])
6179 data->rx_packets =
6180 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
6181 if (stats[NL80211_STA_INFO_TX_PACKETS])
6182 data->tx_packets =
6183 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
6184
6185 return NL_SKIP;
6186 }
6187
6188 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
6189 const u8 *addr)
6190 {
6191 struct i802_bss *bss = priv;
6192 struct wpa_driver_nl80211_data *drv = bss->drv;
6193 struct nl_msg *msg;
6194
6195 os_memset(data, 0, sizeof(*data));
6196 msg = nlmsg_alloc();
6197 if (!msg)
6198 return -ENOMEM;
6199
6200 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
6201
6202 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6203 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6204
6205 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6206 nla_put_failure:
6207 return -ENOBUFS;
6208 }
6209
6210
6211 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6212 int cw_min, int cw_max, int burst_time)
6213 {
6214 struct i802_bss *bss = priv;
6215 struct wpa_driver_nl80211_data *drv = bss->drv;
6216 struct nl_msg *msg;
6217 struct nlattr *txq, *params;
6218
6219 msg = nlmsg_alloc();
6220 if (!msg)
6221 return -1;
6222
6223 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6224
6225 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6226
6227 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6228 if (!txq)
6229 goto nla_put_failure;
6230
6231 /* We are only sending parameters for a single TXQ at a time */
6232 params = nla_nest_start(msg, 1);
6233 if (!params)
6234 goto nla_put_failure;
6235
6236 switch (queue) {
6237 case 0:
6238 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6239 break;
6240 case 1:
6241 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6242 break;
6243 case 2:
6244 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6245 break;
6246 case 3:
6247 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6248 break;
6249 }
6250 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6251 * 32 usec, so need to convert the value here. */
6252 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6253 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6254 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6255 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6256
6257 nla_nest_end(msg, params);
6258
6259 nla_nest_end(msg, txq);
6260
6261 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6262 return 0;
6263 nla_put_failure:
6264 return -1;
6265 }
6266
6267
6268 static int i802_set_sta_vlan(void *priv, const u8 *addr,
6269 const char *ifname, int vlan_id)
6270 {
6271 struct i802_bss *bss = priv;
6272 struct wpa_driver_nl80211_data *drv = bss->drv;
6273 struct nl_msg *msg;
6274 int ret = -ENOBUFS;
6275
6276 msg = nlmsg_alloc();
6277 if (!msg)
6278 return -ENOMEM;
6279
6280 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6281
6282 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6283 if_nametoindex(bss->ifname));
6284 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6285 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6286 if_nametoindex(ifname));
6287
6288 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6289 if (ret < 0) {
6290 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6291 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6292 MAC2STR(addr), ifname, vlan_id, ret,
6293 strerror(-ret));
6294 }
6295 nla_put_failure:
6296 return ret;
6297 }
6298
6299
6300 static int i802_get_inact_sec(void *priv, const u8 *addr)
6301 {
6302 struct hostap_sta_driver_data data;
6303 int ret;
6304
6305 data.inactive_msec = (unsigned long) -1;
6306 ret = i802_read_sta_data(priv, &data, addr);
6307 if (ret || data.inactive_msec == (unsigned long) -1)
6308 return -1;
6309 return data.inactive_msec / 1000;
6310 }
6311
6312
6313 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6314 {
6315 #if 0
6316 /* TODO */
6317 #endif
6318 return 0;
6319 }
6320
6321
6322 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6323 int reason)
6324 {
6325 struct i802_bss *bss = priv;
6326 struct ieee80211_mgmt mgmt;
6327
6328 memset(&mgmt, 0, sizeof(mgmt));
6329 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6330 WLAN_FC_STYPE_DEAUTH);
6331 memcpy(mgmt.da, addr, ETH_ALEN);
6332 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6333 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6334 mgmt.u.deauth.reason_code = host_to_le16(reason);
6335 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6336 IEEE80211_HDRLEN +
6337 sizeof(mgmt.u.deauth), 0);
6338 }
6339
6340
6341 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6342 int reason)
6343 {
6344 struct i802_bss *bss = priv;
6345 struct ieee80211_mgmt mgmt;
6346
6347 memset(&mgmt, 0, sizeof(mgmt));
6348 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6349 WLAN_FC_STYPE_DISASSOC);
6350 memcpy(mgmt.da, addr, ETH_ALEN);
6351 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6352 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6353 mgmt.u.disassoc.reason_code = host_to_le16(reason);
6354 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6355 IEEE80211_HDRLEN +
6356 sizeof(mgmt.u.disassoc), 0);
6357 }
6358
6359 #endif /* HOSTAPD || CONFIG_AP */
6360
6361 #ifdef HOSTAPD
6362
6363 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6364 {
6365 int i;
6366 int *old;
6367
6368 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6369 ifidx);
6370 for (i = 0; i < drv->num_if_indices; i++) {
6371 if (drv->if_indices[i] == 0) {
6372 drv->if_indices[i] = ifidx;
6373 return;
6374 }
6375 }
6376
6377 if (drv->if_indices != drv->default_if_indices)
6378 old = drv->if_indices;
6379 else
6380 old = NULL;
6381
6382 drv->if_indices = os_realloc(old,
6383 sizeof(int) * (drv->num_if_indices + 1));
6384 if (!drv->if_indices) {
6385 if (!old)
6386 drv->if_indices = drv->default_if_indices;
6387 else
6388 drv->if_indices = old;
6389 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6390 "interfaces");
6391 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6392 return;
6393 } else if (!old)
6394 os_memcpy(drv->if_indices, drv->default_if_indices,
6395 sizeof(drv->default_if_indices));
6396 drv->if_indices[drv->num_if_indices] = ifidx;
6397 drv->num_if_indices++;
6398 }
6399
6400
6401 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6402 {
6403 int i;
6404
6405 for (i = 0; i < drv->num_if_indices; i++) {
6406 if (drv->if_indices[i] == ifidx) {
6407 drv->if_indices[i] = 0;
6408 break;
6409 }
6410 }
6411 }
6412
6413
6414 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6415 {
6416 int i;
6417
6418 for (i = 0; i < drv->num_if_indices; i++)
6419 if (drv->if_indices[i] == ifidx)
6420 return 1;
6421
6422 return 0;
6423 }
6424
6425
6426 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6427 const char *bridge_ifname)
6428 {
6429 struct i802_bss *bss = priv;
6430 struct wpa_driver_nl80211_data *drv = bss->drv;
6431 char name[IFNAMSIZ + 1];
6432
6433 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6434 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6435 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6436 if (val) {
6437 if (!if_nametoindex(name)) {
6438 if (nl80211_create_iface(drv, name,
6439 NL80211_IFTYPE_AP_VLAN,
6440 NULL, 1) < 0)
6441 return -1;
6442 if (bridge_ifname &&
6443 linux_br_add_if(drv->global->ioctl_sock,
6444 bridge_ifname, name) < 0)
6445 return -1;
6446 }
6447 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
6448 return i802_set_sta_vlan(priv, addr, name, 0);
6449 } else {
6450 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6451 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
6452 name);
6453 }
6454 }
6455
6456
6457 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6458 {
6459 struct wpa_driver_nl80211_data *drv = eloop_ctx;
6460 struct sockaddr_ll lladdr;
6461 unsigned char buf[3000];
6462 int len;
6463 socklen_t fromlen = sizeof(lladdr);
6464
6465 len = recvfrom(sock, buf, sizeof(buf), 0,
6466 (struct sockaddr *)&lladdr, &fromlen);
6467 if (len < 0) {
6468 perror("recv");
6469 return;
6470 }
6471
6472 if (have_ifidx(drv, lladdr.sll_ifindex))
6473 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6474 }
6475
6476
6477 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6478 struct i802_bss *bss,
6479 const char *brname, const char *ifname)
6480 {
6481 int ifindex;
6482 char in_br[IFNAMSIZ];
6483
6484 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6485 ifindex = if_nametoindex(brname);
6486 if (ifindex == 0) {
6487 /*
6488 * Bridge was configured, but the bridge device does
6489 * not exist. Try to add it now.
6490 */
6491 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6492 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6493 "bridge interface %s: %s",
6494 brname, strerror(errno));
6495 return -1;
6496 }
6497 bss->added_bridge = 1;
6498 add_ifidx(drv, if_nametoindex(brname));
6499 }
6500
6501 if (linux_br_get(in_br, ifname) == 0) {
6502 if (os_strcmp(in_br, brname) == 0)
6503 return 0; /* already in the bridge */
6504
6505 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6506 "bridge %s", ifname, in_br);
6507 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6508 0) {
6509 wpa_printf(MSG_ERROR, "nl80211: Failed to "
6510 "remove interface %s from bridge "
6511 "%s: %s",
6512 ifname, brname, strerror(errno));
6513 return -1;
6514 }
6515 }
6516
6517 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6518 ifname, brname);
6519 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6520 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6521 "into bridge %s: %s",
6522 ifname, brname, strerror(errno));
6523 return -1;
6524 }
6525 bss->added_if_into_bridge = 1;
6526
6527 return 0;
6528 }
6529
6530
6531 static void *i802_init(struct hostapd_data *hapd,
6532 struct wpa_init_params *params)
6533 {
6534 struct wpa_driver_nl80211_data *drv;
6535 struct i802_bss *bss;
6536 size_t i;
6537 char brname[IFNAMSIZ];
6538 int ifindex, br_ifindex;
6539 int br_added = 0;
6540
6541 bss = wpa_driver_nl80211_init(hapd, params->ifname,
6542 params->global_priv);
6543 if (bss == NULL)
6544 return NULL;
6545
6546 drv = bss->drv;
6547 drv->nlmode = NL80211_IFTYPE_AP;
6548 drv->eapol_sock = -1;
6549
6550 if (linux_br_get(brname, params->ifname) == 0) {
6551 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6552 params->ifname, brname);
6553 br_ifindex = if_nametoindex(brname);
6554 } else {
6555 brname[0] = '\0';
6556 br_ifindex = 0;
6557 }
6558
6559 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
6560 drv->if_indices = drv->default_if_indices;
6561 for (i = 0; i < params->num_bridge; i++) {
6562 if (params->bridge[i]) {
6563 ifindex = if_nametoindex(params->bridge[i]);
6564 if (ifindex)
6565 add_ifidx(drv, ifindex);
6566 if (ifindex == br_ifindex)
6567 br_added = 1;
6568 }
6569 }
6570 if (!br_added && br_ifindex &&
6571 (params->num_bridge == 0 || !params->bridge[0]))
6572 add_ifidx(drv, br_ifindex);
6573
6574 /* start listening for EAPOL on the default AP interface */
6575 add_ifidx(drv, drv->ifindex);
6576
6577 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
6578 goto failed;
6579
6580 if (params->bssid) {
6581 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6582 params->bssid))
6583 goto failed;
6584 }
6585
6586 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
6587 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
6588 "into AP mode", bss->ifname);
6589 goto failed;
6590 }
6591
6592 if (params->num_bridge && params->bridge[0] &&
6593 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6594 goto failed;
6595
6596 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
6597 goto failed;
6598
6599 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6600 if (drv->eapol_sock < 0) {
6601 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
6602 goto failed;
6603 }
6604
6605 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6606 {
6607 printf("Could not register read socket for eapol\n");
6608 goto failed;
6609 }
6610
6611 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6612 params->own_addr))
6613 goto failed;
6614
6615 return bss;
6616
6617 failed:
6618 wpa_driver_nl80211_deinit(bss);
6619 return NULL;
6620 }
6621
6622
6623 static void i802_deinit(void *priv)
6624 {
6625 wpa_driver_nl80211_deinit(priv);
6626 }
6627
6628 #endif /* HOSTAPD */
6629
6630
6631 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6632 enum wpa_driver_if_type type)
6633 {
6634 switch (type) {
6635 case WPA_IF_STATION:
6636 return NL80211_IFTYPE_STATION;
6637 case WPA_IF_P2P_CLIENT:
6638 case WPA_IF_P2P_GROUP:
6639 return NL80211_IFTYPE_P2P_CLIENT;
6640 case WPA_IF_AP_VLAN:
6641 return NL80211_IFTYPE_AP_VLAN;
6642 case WPA_IF_AP_BSS:
6643 return NL80211_IFTYPE_AP;
6644 case WPA_IF_P2P_GO:
6645 return NL80211_IFTYPE_P2P_GO;
6646 }
6647 return -1;
6648 }
6649
6650
6651 #ifdef CONFIG_P2P
6652
6653 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6654 {
6655 struct wpa_driver_nl80211_data *drv;
6656 dl_list_for_each(drv, &global->interfaces,
6657 struct wpa_driver_nl80211_data, list) {
6658 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0)
6659 return 1;
6660 }
6661 return 0;
6662 }
6663
6664
6665 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6666 u8 *new_addr)
6667 {
6668 unsigned int idx;
6669
6670 if (!drv->global)
6671 return -1;
6672
6673 os_memcpy(new_addr, drv->addr, ETH_ALEN);
6674 for (idx = 0; idx < 64; idx++) {
6675 new_addr[0] = drv->addr[0] | 0x02;
6676 new_addr[0] ^= idx << 2;
6677 if (!nl80211_addr_in_use(drv->global, new_addr))
6678 break;
6679 }
6680 if (idx == 64)
6681 return -1;
6682
6683 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6684 MACSTR, MAC2STR(new_addr));
6685
6686 return 0;
6687 }
6688
6689 #endif /* CONFIG_P2P */
6690
6691
6692 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6693 const char *ifname, const u8 *addr,
6694 void *bss_ctx, void **drv_priv,
6695 char *force_ifname, u8 *if_addr,
6696 const char *bridge)
6697 {
6698 struct i802_bss *bss = priv;
6699 struct wpa_driver_nl80211_data *drv = bss->drv;
6700 int ifidx;
6701 #ifdef HOSTAPD
6702 struct i802_bss *new_bss = NULL;
6703
6704 if (type == WPA_IF_AP_BSS) {
6705 new_bss = os_zalloc(sizeof(*new_bss));
6706 if (new_bss == NULL)
6707 return -1;
6708 }
6709 #endif /* HOSTAPD */
6710
6711 if (addr)
6712 os_memcpy(if_addr, addr, ETH_ALEN);
6713 ifidx = nl80211_create_iface(drv, ifname,
6714 wpa_driver_nl80211_if_type(type), addr,
6715 0);
6716 if (ifidx < 0) {
6717 #ifdef HOSTAPD
6718 os_free(new_bss);
6719 #endif /* HOSTAPD */
6720 return -1;
6721 }
6722
6723 if (!addr &&
6724 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6725 if_addr) < 0) {
6726 nl80211_remove_iface(drv, ifidx);
6727 return -1;
6728 }
6729
6730 #ifdef CONFIG_P2P
6731 if (!addr &&
6732 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6733 type == WPA_IF_P2P_GO)) {
6734 /* Enforce unique P2P Interface Address */
6735 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
6736
6737 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6738 own_addr) < 0 ||
6739 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6740 new_addr) < 0) {
6741 nl80211_remove_iface(drv, ifidx);
6742 return -1;
6743 }
6744 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
6745 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6746 "for P2P group interface");
6747 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6748 nl80211_remove_iface(drv, ifidx);
6749 return -1;
6750 }
6751 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6752 new_addr) < 0) {
6753 nl80211_remove_iface(drv, ifidx);
6754 return -1;
6755 }
6756 }
6757 os_memcpy(if_addr, new_addr, ETH_ALEN);
6758 }
6759 #endif /* CONFIG_P2P */
6760
6761 #ifdef HOSTAPD
6762 if (bridge &&
6763 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6764 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6765 "interface %s to a bridge %s", ifname, bridge);
6766 nl80211_remove_iface(drv, ifidx);
6767 os_free(new_bss);
6768 return -1;
6769 }
6770
6771 if (type == WPA_IF_AP_BSS) {
6772 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6773 {
6774 nl80211_remove_iface(drv, ifidx);
6775 os_free(new_bss);
6776 return -1;
6777 }
6778 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6779 new_bss->ifindex = ifidx;
6780 new_bss->drv = drv;
6781 new_bss->next = drv->first_bss.next;
6782 drv->first_bss.next = new_bss;
6783 if (drv_priv)
6784 *drv_priv = new_bss;
6785 }
6786 #endif /* HOSTAPD */
6787
6788 if (drv->global)
6789 drv->global->if_add_ifindex = ifidx;
6790
6791 return 0;
6792 }
6793
6794
6795 static int wpa_driver_nl80211_if_remove(void *priv,
6796 enum wpa_driver_if_type type,
6797 const char *ifname)
6798 {
6799 struct i802_bss *bss = priv;
6800 struct wpa_driver_nl80211_data *drv = bss->drv;
6801 int ifindex = if_nametoindex(ifname);
6802
6803 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
6804 __func__, type, ifname, ifindex);
6805 if (ifindex <= 0)
6806 return -1;
6807
6808 #ifdef HOSTAPD
6809 if (bss->added_if_into_bridge) {
6810 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6811 bss->ifname) < 0)
6812 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6813 "interface %s from bridge %s: %s",
6814 bss->ifname, bss->brname, strerror(errno));
6815 }
6816 if (bss->added_bridge) {
6817 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6818 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6819 "bridge %s: %s",
6820 bss->brname, strerror(errno));
6821 }
6822 #endif /* HOSTAPD */
6823
6824 nl80211_remove_iface(drv, ifindex);
6825
6826 #ifdef HOSTAPD
6827 if (type != WPA_IF_AP_BSS)
6828 return 0;
6829
6830 if (bss != &drv->first_bss) {
6831 struct i802_bss *tbss;
6832
6833 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
6834 if (tbss->next == bss) {
6835 tbss->next = bss->next;
6836 os_free(bss);
6837 bss = NULL;
6838 break;
6839 }
6840 }
6841 if (bss)
6842 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6843 "BSS %p in the list", __func__, bss);
6844 }
6845 #endif /* HOSTAPD */
6846
6847 return 0;
6848 }
6849
6850
6851 static int cookie_handler(struct nl_msg *msg, void *arg)
6852 {
6853 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6854 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6855 u64 *cookie = arg;
6856 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6857 genlmsg_attrlen(gnlh, 0), NULL);
6858 if (tb[NL80211_ATTR_COOKIE])
6859 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6860 return NL_SKIP;
6861 }
6862
6863
6864 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
6865 unsigned int freq, unsigned int wait,
6866 const u8 *buf, size_t buf_len,
6867 u64 *cookie_out, int no_cck, int no_ack)
6868 {
6869 struct nl_msg *msg;
6870 u64 cookie;
6871 int ret = -1;
6872
6873 msg = nlmsg_alloc();
6874 if (!msg)
6875 return -1;
6876
6877 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6878
6879 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6880 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6881 if (wait)
6882 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6883 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6884 if (no_cck)
6885 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6886 if (no_ack)
6887 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
6888
6889 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6890
6891 cookie = 0;
6892 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6893 msg = NULL;
6894 if (ret) {
6895 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6896 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6897 freq, wait);
6898 goto nla_put_failure;
6899 }
6900 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
6901 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6902 (long long unsigned int) cookie);
6903
6904 if (cookie_out)
6905 *cookie_out = no_ack ? (u64) -1 : cookie;
6906
6907 nla_put_failure:
6908 nlmsg_free(msg);
6909 return ret;
6910 }
6911
6912
6913 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
6914 unsigned int wait_time,
6915 const u8 *dst, const u8 *src,
6916 const u8 *bssid,
6917 const u8 *data, size_t data_len,
6918 int no_cck)
6919 {
6920 struct i802_bss *bss = priv;
6921 struct wpa_driver_nl80211_data *drv = bss->drv;
6922 int ret = -1;
6923 u8 *buf;
6924 struct ieee80211_hdr *hdr;
6925
6926 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6927 "wait=%d ms no_cck=%d)", drv->ifindex, wait_time, no_cck);
6928
6929 buf = os_zalloc(24 + data_len);
6930 if (buf == NULL)
6931 return ret;
6932 os_memcpy(buf + 24, data, data_len);
6933 hdr = (struct ieee80211_hdr *) buf;
6934 hdr->frame_control =
6935 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6936 os_memcpy(hdr->addr1, dst, ETH_ALEN);
6937 os_memcpy(hdr->addr2, src, ETH_ALEN);
6938 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6939
6940 if (is_ap_interface(drv->nlmode))
6941 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len,
6942 0);
6943 else
6944 ret = nl80211_send_frame_cmd(drv, freq, wait_time, buf,
6945 24 + data_len,
6946 &drv->send_action_cookie,
6947 no_cck, 0);
6948
6949 os_free(buf);
6950 return ret;
6951 }
6952
6953
6954 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6955 {
6956 struct i802_bss *bss = priv;
6957 struct wpa_driver_nl80211_data *drv = bss->drv;
6958 struct nl_msg *msg;
6959 int ret;
6960
6961 msg = nlmsg_alloc();
6962 if (!msg)
6963 return;
6964
6965 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6966
6967 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6968 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6969
6970 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6971 msg = NULL;
6972 if (ret)
6973 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6974 "(%s)", ret, strerror(-ret));
6975
6976 nla_put_failure:
6977 nlmsg_free(msg);
6978 }
6979
6980
6981 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6982 unsigned int duration)
6983 {
6984 struct i802_bss *bss = priv;
6985 struct wpa_driver_nl80211_data *drv = bss->drv;
6986 struct nl_msg *msg;
6987 int ret;
6988 u64 cookie;
6989
6990 msg = nlmsg_alloc();
6991 if (!msg)
6992 return -1;
6993
6994 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6995
6996 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6997 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6998 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6999
7000 cookie = 0;
7001 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
7002 if (ret == 0) {
7003 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
7004 "0x%llx for freq=%u MHz duration=%u",
7005 (long long unsigned int) cookie, freq, duration);
7006 drv->remain_on_chan_cookie = cookie;
7007 drv->pending_remain_on_chan = 1;
7008 return 0;
7009 }
7010 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
7011 "(freq=%d duration=%u): %d (%s)",
7012 freq, duration, ret, strerror(-ret));
7013 nla_put_failure:
7014 return -1;
7015 }
7016
7017
7018 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
7019 {
7020 struct i802_bss *bss = priv;
7021 struct wpa_driver_nl80211_data *drv = bss->drv;
7022 struct nl_msg *msg;
7023 int ret;
7024
7025 if (!drv->pending_remain_on_chan) {
7026 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7027 "to cancel");
7028 return -1;
7029 }
7030
7031 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7032 "0x%llx",
7033 (long long unsigned int) drv->remain_on_chan_cookie);
7034
7035 msg = nlmsg_alloc();
7036 if (!msg)
7037 return -1;
7038
7039 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
7040
7041 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7042 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
7043
7044 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7045 if (ret == 0)
7046 return 0;
7047 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7048 "%d (%s)", ret, strerror(-ret));
7049 nla_put_failure:
7050 return -1;
7051 }
7052
7053
7054 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
7055 {
7056 struct i802_bss *bss = priv;
7057 struct wpa_driver_nl80211_data *drv = bss->drv;
7058
7059 if (!report) {
7060 if (drv->nl_preq.handle) {
7061 eloop_unregister_read_sock(
7062 nl_socket_get_fd(drv->nl_preq.handle));
7063 nl_destroy_handles(&drv->nl_preq);
7064 }
7065 return 0;
7066 }
7067
7068 if (drv->nl_preq.handle) {
7069 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7070 "already on!");
7071 return 0;
7072 }
7073
7074 if (nl_create_handles(&drv->nl_preq, drv->global->nl_cb, "preq"))
7075 return -1;
7076
7077 if (nl80211_register_frame(drv, drv->nl_preq.handle,
7078 (WLAN_FC_TYPE_MGMT << 2) |
7079 (WLAN_FC_STYPE_PROBE_REQ << 4),
7080 NULL, 0) < 0)
7081 goto out_err;
7082
7083 eloop_register_read_sock(nl_socket_get_fd(drv->nl_preq.handle),
7084 wpa_driver_nl80211_event_receive, drv,
7085 drv->nl_preq.handle);
7086
7087 return 0;
7088
7089 out_err:
7090 nl_destroy_handles(&drv->nl_preq);
7091 return -1;
7092 }
7093
7094
7095 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7096 int ifindex, int disabled)
7097 {
7098 struct nl_msg *msg;
7099 struct nlattr *bands, *band;
7100 int ret;
7101
7102 msg = nlmsg_alloc();
7103 if (!msg)
7104 return -1;
7105
7106 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7107 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7108
7109 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7110 if (!bands)
7111 goto nla_put_failure;
7112
7113 /*
7114 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7115 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7116 * rates. All 5 GHz rates are left enabled.
7117 */
7118 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7119 if (!band)
7120 goto nla_put_failure;
7121 if (disabled) {
7122 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7123 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7124 }
7125 nla_nest_end(msg, band);
7126
7127 nla_nest_end(msg, bands);
7128
7129 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7130 msg = NULL;
7131 if (ret) {
7132 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7133 "(%s)", ret, strerror(-ret));
7134 }
7135
7136 return ret;
7137
7138 nla_put_failure:
7139 nlmsg_free(msg);
7140 return -1;
7141 }
7142
7143
7144 static int wpa_driver_nl80211_deinit_ap(void *priv)
7145 {
7146 struct i802_bss *bss = priv;
7147 struct wpa_driver_nl80211_data *drv = bss->drv;
7148 if (!is_ap_interface(drv->nlmode))
7149 return -1;
7150 wpa_driver_nl80211_del_beacon(drv);
7151 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7152 }
7153
7154
7155 static void wpa_driver_nl80211_resume(void *priv)
7156 {
7157 struct i802_bss *bss = priv;
7158 struct wpa_driver_nl80211_data *drv = bss->drv;
7159 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
7160 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
7161 "resume event");
7162 }
7163 }
7164
7165
7166 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7167 const u8 *ies, size_t ies_len)
7168 {
7169 struct i802_bss *bss = priv;
7170 struct wpa_driver_nl80211_data *drv = bss->drv;
7171 int ret;
7172 u8 *data, *pos;
7173 size_t data_len;
7174 u8 own_addr[ETH_ALEN];
7175
7176 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7177 own_addr) < 0)
7178 return -1;
7179
7180 if (action != 1) {
7181 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7182 "action %d", action);
7183 return -1;
7184 }
7185
7186 /*
7187 * Action frame payload:
7188 * Category[1] = 6 (Fast BSS Transition)
7189 * Action[1] = 1 (Fast BSS Transition Request)
7190 * STA Address
7191 * Target AP Address
7192 * FT IEs
7193 */
7194
7195 data_len = 2 + 2 * ETH_ALEN + ies_len;
7196 data = os_malloc(data_len);
7197 if (data == NULL)
7198 return -1;
7199 pos = data;
7200 *pos++ = 0x06; /* FT Action category */
7201 *pos++ = action;
7202 os_memcpy(pos, own_addr, ETH_ALEN);
7203 pos += ETH_ALEN;
7204 os_memcpy(pos, target_ap, ETH_ALEN);
7205 pos += ETH_ALEN;
7206 os_memcpy(pos, ies, ies_len);
7207
7208 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7209 drv->bssid, own_addr, drv->bssid,
7210 data, data_len, 0);
7211 os_free(data);
7212
7213 return ret;
7214 }
7215
7216
7217 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7218 {
7219 struct i802_bss *bss = priv;
7220 struct wpa_driver_nl80211_data *drv = bss->drv;
7221 struct nl_msg *msg, *cqm = NULL;
7222
7223 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7224 "hysteresis=%d", threshold, hysteresis);
7225
7226 msg = nlmsg_alloc();
7227 if (!msg)
7228 return -1;
7229
7230 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7231
7232 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7233
7234 cqm = nlmsg_alloc();
7235 if (cqm == NULL)
7236 return -1;
7237
7238 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7239 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7240 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
7241
7242 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7243 return 0;
7244 msg = NULL;
7245
7246 nla_put_failure:
7247 if (cqm)
7248 nlmsg_free(cqm);
7249 nlmsg_free(msg);
7250 return -1;
7251 }
7252
7253
7254 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7255 {
7256 struct i802_bss *bss = priv;
7257 struct wpa_driver_nl80211_data *drv = bss->drv;
7258 int res;
7259
7260 os_memset(si, 0, sizeof(*si));
7261 res = nl80211_get_link_signal(drv, si);
7262 if (res != 0)
7263 return res;
7264
7265 return nl80211_get_link_noise(drv, si);
7266 }
7267
7268
7269 static int wpa_driver_nl80211_shared_freq(void *priv)
7270 {
7271 struct i802_bss *bss = priv;
7272 struct wpa_driver_nl80211_data *drv = bss->drv;
7273 struct wpa_driver_nl80211_data *driver;
7274 int freq = 0;
7275
7276 /*
7277 * If the same PHY is in connected state with some other interface,
7278 * then retrieve the assoc freq.
7279 */
7280 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7281 drv->phyname);
7282
7283 dl_list_for_each(driver, &drv->global->interfaces,
7284 struct wpa_driver_nl80211_data, list) {
7285 if (drv == driver ||
7286 os_strcmp(drv->phyname, driver->phyname) != 0 ||
7287 !driver->associated)
7288 continue;
7289
7290 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7291 MACSTR,
7292 driver->phyname, driver->first_bss.ifname,
7293 MAC2STR(driver->addr));
7294 freq = nl80211_get_assoc_freq(driver);
7295 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7296 drv->phyname, freq);
7297 }
7298
7299 if (!freq)
7300 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7301 "PHY (%s) in associated state", drv->phyname);
7302
7303 return freq;
7304 }
7305
7306
7307 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7308 int encrypt)
7309 {
7310 struct i802_bss *bss = priv;
7311 struct wpa_driver_nl80211_data *drv = bss->drv;
7312 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt, 0);
7313 }
7314
7315
7316 static int nl80211_set_param(void *priv, const char *param)
7317 {
7318 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7319 if (param == NULL)
7320 return 0;
7321
7322 #ifdef CONFIG_P2P
7323 if (os_strstr(param, "use_p2p_group_interface=1")) {
7324 struct i802_bss *bss = priv;
7325 struct wpa_driver_nl80211_data *drv = bss->drv;
7326
7327 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7328 "interface");
7329 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7330 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7331 }
7332 #endif /* CONFIG_P2P */
7333
7334 return 0;
7335 }
7336
7337
7338 static void * nl80211_global_init(void)
7339 {
7340 struct nl80211_global *global;
7341 struct netlink_config *cfg;
7342
7343 global = os_zalloc(sizeof(*global));
7344 if (global == NULL)
7345 return NULL;
7346 global->ioctl_sock = -1;
7347 dl_list_init(&global->interfaces);
7348 global->if_add_ifindex = -1;
7349
7350 cfg = os_zalloc(sizeof(*cfg));
7351 if (cfg == NULL)
7352 goto err;
7353
7354 cfg->ctx = global;
7355 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7356 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7357 global->netlink = netlink_init(cfg);
7358 if (global->netlink == NULL) {
7359 os_free(cfg);
7360 goto err;
7361 }
7362
7363 if (wpa_driver_nl80211_init_nl_global(global) < 0)
7364 goto err;
7365
7366 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7367 if (global->ioctl_sock < 0) {
7368 perror("socket(PF_INET,SOCK_DGRAM)");
7369 goto err;
7370 }
7371
7372 return global;
7373
7374 err:
7375 nl80211_global_deinit(global);
7376 return NULL;
7377 }
7378
7379
7380 static void nl80211_global_deinit(void *priv)
7381 {
7382 struct nl80211_global *global = priv;
7383 if (global == NULL)
7384 return;
7385 if (!dl_list_empty(&global->interfaces)) {
7386 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7387 "nl80211_global_deinit",
7388 dl_list_len(&global->interfaces));
7389 }
7390
7391 if (global->netlink)
7392 netlink_deinit(global->netlink);
7393
7394 nl_destroy_handles(&global->nl);
7395
7396 if (global->nl_cb)
7397 nl_cb_put(global->nl_cb);
7398
7399 if (global->ioctl_sock >= 0)
7400 close(global->ioctl_sock);
7401
7402 os_free(global);
7403 }
7404
7405
7406 static const char * nl80211_get_radio_name(void *priv)
7407 {
7408 struct i802_bss *bss = priv;
7409 struct wpa_driver_nl80211_data *drv = bss->drv;
7410 return drv->phyname;
7411 }
7412
7413
7414 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7415 const u8 *pmkid)
7416 {
7417 struct nl_msg *msg;
7418
7419 msg = nlmsg_alloc();
7420 if (!msg)
7421 return -ENOMEM;
7422
7423 nl80211_cmd(bss->drv, msg, 0, cmd);
7424
7425 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7426 if (pmkid)
7427 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7428 if (bssid)
7429 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7430
7431 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7432 nla_put_failure:
7433 return -ENOBUFS;
7434 }
7435
7436
7437 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7438 {
7439 struct i802_bss *bss = priv;
7440 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7441 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7442 }
7443
7444
7445 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7446 {
7447 struct i802_bss *bss = priv;
7448 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7449 MAC2STR(bssid));
7450 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7451 }
7452
7453
7454 static int nl80211_flush_pmkid(void *priv)
7455 {
7456 struct i802_bss *bss = priv;
7457 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7458 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7459 }
7460
7461
7462 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7463 const u8 *replay_ctr)
7464 {
7465 struct i802_bss *bss = priv;
7466 struct wpa_driver_nl80211_data *drv = bss->drv;
7467 struct nlattr *replay_nested;
7468 struct nl_msg *msg;
7469
7470 msg = nlmsg_alloc();
7471 if (!msg)
7472 return;
7473
7474 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7475
7476 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7477
7478 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7479 if (!replay_nested)
7480 goto nla_put_failure;
7481
7482 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7483 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7484 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7485 replay_ctr);
7486
7487 nla_nest_end(msg, replay_nested);
7488
7489 send_and_recv_msgs(drv, msg, NULL, NULL);
7490 return;
7491 nla_put_failure:
7492 nlmsg_free(msg);
7493 }
7494
7495
7496 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7497 const u8 *addr, int qos)
7498 {
7499 /* send data frame to poll STA and check whether
7500 * this frame is ACKed */
7501 struct {
7502 struct ieee80211_hdr hdr;
7503 u16 qos_ctl;
7504 } STRUCT_PACKED nulldata;
7505 size_t size;
7506
7507 /* Send data frame to poll STA and check whether this frame is ACKed */
7508
7509 os_memset(&nulldata, 0, sizeof(nulldata));
7510
7511 if (qos) {
7512 nulldata.hdr.frame_control =
7513 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7514 WLAN_FC_STYPE_QOS_NULL);
7515 size = sizeof(nulldata);
7516 } else {
7517 nulldata.hdr.frame_control =
7518 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7519 WLAN_FC_STYPE_NULLFUNC);
7520 size = sizeof(struct ieee80211_hdr);
7521 }
7522
7523 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7524 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7525 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7526 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7527
7528 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
7529 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7530 "send poll frame");
7531 }
7532
7533 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7534 int qos)
7535 {
7536 struct i802_bss *bss = priv;
7537 struct wpa_driver_nl80211_data *drv = bss->drv;
7538 struct nl_msg *msg;
7539
7540 if (!drv->poll_command_supported) {
7541 nl80211_send_null_frame(bss, own_addr, addr, qos);
7542 return;
7543 }
7544
7545 msg = nlmsg_alloc();
7546 if (!msg)
7547 return;
7548
7549 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
7550
7551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7552 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7553
7554 send_and_recv_msgs(drv, msg, NULL, NULL);
7555 return;
7556 nla_put_failure:
7557 nlmsg_free(msg);
7558 }
7559
7560
7561 #ifdef CONFIG_TDLS
7562
7563 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7564 u8 dialog_token, u16 status_code,
7565 const u8 *buf, size_t len)
7566 {
7567 struct i802_bss *bss = priv;
7568 struct wpa_driver_nl80211_data *drv = bss->drv;
7569 struct nl_msg *msg;
7570
7571 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7572 return -EOPNOTSUPP;
7573
7574 if (!dst)
7575 return -EINVAL;
7576
7577 msg = nlmsg_alloc();
7578 if (!msg)
7579 return -ENOMEM;
7580
7581 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7582 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7583 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7584 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7585 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7586 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7587 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7588
7589 return send_and_recv_msgs(drv, msg, NULL, NULL);
7590
7591 nla_put_failure:
7592 nlmsg_free(msg);
7593 return -ENOBUFS;
7594 }
7595
7596
7597 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7598 {
7599 struct i802_bss *bss = priv;
7600 struct wpa_driver_nl80211_data *drv = bss->drv;
7601 struct nl_msg *msg;
7602 enum nl80211_tdls_operation nl80211_oper;
7603
7604 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7605 return -EOPNOTSUPP;
7606
7607 switch (oper) {
7608 case TDLS_DISCOVERY_REQ:
7609 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7610 break;
7611 case TDLS_SETUP:
7612 nl80211_oper = NL80211_TDLS_SETUP;
7613 break;
7614 case TDLS_TEARDOWN:
7615 nl80211_oper = NL80211_TDLS_TEARDOWN;
7616 break;
7617 case TDLS_ENABLE_LINK:
7618 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7619 break;
7620 case TDLS_DISABLE_LINK:
7621 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7622 break;
7623 case TDLS_ENABLE:
7624 return 0;
7625 case TDLS_DISABLE:
7626 return 0;
7627 default:
7628 return -EINVAL;
7629 }
7630
7631 msg = nlmsg_alloc();
7632 if (!msg)
7633 return -ENOMEM;
7634
7635 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
7636 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
7637 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7638 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7639
7640 return send_and_recv_msgs(drv, msg, NULL, NULL);
7641
7642 nla_put_failure:
7643 nlmsg_free(msg);
7644 return -ENOBUFS;
7645 }
7646
7647 #endif /* CONFIG TDLS */
7648
7649
7650 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
7651 .name = "nl80211",
7652 .desc = "Linux nl80211/cfg80211",
7653 .get_bssid = wpa_driver_nl80211_get_bssid,
7654 .get_ssid = wpa_driver_nl80211_get_ssid,
7655 .set_key = wpa_driver_nl80211_set_key,
7656 .scan2 = wpa_driver_nl80211_scan,
7657 .sched_scan = wpa_driver_nl80211_sched_scan,
7658 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
7659 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
7660 .deauthenticate = wpa_driver_nl80211_deauthenticate,
7661 .disassociate = wpa_driver_nl80211_disassociate,
7662 .authenticate = wpa_driver_nl80211_authenticate,
7663 .associate = wpa_driver_nl80211_associate,
7664 .global_init = nl80211_global_init,
7665 .global_deinit = nl80211_global_deinit,
7666 .init2 = wpa_driver_nl80211_init,
7667 .deinit = wpa_driver_nl80211_deinit,
7668 .get_capa = wpa_driver_nl80211_get_capa,
7669 .set_operstate = wpa_driver_nl80211_set_operstate,
7670 .set_supp_port = wpa_driver_nl80211_set_supp_port,
7671 .set_country = wpa_driver_nl80211_set_country,
7672 .set_ap = wpa_driver_nl80211_set_ap,
7673 .if_add = wpa_driver_nl80211_if_add,
7674 .if_remove = wpa_driver_nl80211_if_remove,
7675 .send_mlme = wpa_driver_nl80211_send_mlme,
7676 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
7677 .sta_add = wpa_driver_nl80211_sta_add,
7678 .sta_remove = wpa_driver_nl80211_sta_remove,
7679 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
7680 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
7681 #ifdef HOSTAPD
7682 .hapd_init = i802_init,
7683 .hapd_deinit = i802_deinit,
7684 .set_wds_sta = i802_set_wds_sta,
7685 #endif /* HOSTAPD */
7686 #if defined(HOSTAPD) || defined(CONFIG_AP)
7687 .get_seqnum = i802_get_seqnum,
7688 .flush = i802_flush,
7689 .read_sta_data = i802_read_sta_data,
7690 .get_inact_sec = i802_get_inact_sec,
7691 .sta_clear_stats = i802_sta_clear_stats,
7692 .set_rts = i802_set_rts,
7693 .set_frag = i802_set_frag,
7694 .set_tx_queue_params = i802_set_tx_queue_params,
7695 .set_sta_vlan = i802_set_sta_vlan,
7696 .set_rate_sets = i802_set_rate_sets,
7697 .sta_deauth = i802_sta_deauth,
7698 .sta_disassoc = i802_sta_disassoc,
7699 #endif /* HOSTAPD || CONFIG_AP */
7700 .set_freq = i802_set_freq,
7701 .send_action = wpa_driver_nl80211_send_action,
7702 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
7703 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
7704 .cancel_remain_on_channel =
7705 wpa_driver_nl80211_cancel_remain_on_channel,
7706 .probe_req_report = wpa_driver_nl80211_probe_req_report,
7707 .deinit_ap = wpa_driver_nl80211_deinit_ap,
7708 .resume = wpa_driver_nl80211_resume,
7709 .send_ft_action = nl80211_send_ft_action,
7710 .signal_monitor = nl80211_signal_monitor,
7711 .signal_poll = nl80211_signal_poll,
7712 .send_frame = nl80211_send_frame,
7713 .shared_freq = wpa_driver_nl80211_shared_freq,
7714 .set_param = nl80211_set_param,
7715 .get_radio_name = nl80211_get_radio_name,
7716 .add_pmkid = nl80211_add_pmkid,
7717 .remove_pmkid = nl80211_remove_pmkid,
7718 .flush_pmkid = nl80211_flush_pmkid,
7719 .set_rekey_info = nl80211_set_rekey_info,
7720 .poll_client = nl80211_poll_client,
7721 #ifdef CONFIG_TDLS
7722 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
7723 .tdls_oper = nl80211_tdls_oper,
7724 #endif /* CONFIG_TDLS */
7725 };
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