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nl80211: Get rid of family/cache objects
[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 int no_monitor_iface_capab;
204
205 unsigned int disabled_11b_rates:1;
206 unsigned int pending_remain_on_chan:1;
207 unsigned int in_interface_list:1;
208
209 u64 remain_on_chan_cookie;
210 u64 send_action_cookie;
211
212 unsigned int last_mgmt_freq;
213 unsigned int ap_oper_freq;
214
215 struct wpa_driver_scan_filter *filter_ssids;
216 size_t num_filter_ssids;
217
218 struct i802_bss first_bss;
219
220 #ifdef CONFIG_AP
221 struct l2_packet_data *l2;
222 #endif /* CONFIG_AP */
223
224 #ifdef HOSTAPD
225 int eapol_sock; /* socket for EAPOL frames */
226
227 int default_if_indices[16];
228 int *if_indices;
229 int num_if_indices;
230
231 int last_freq;
232 int last_freq_ht;
233 #endif /* HOSTAPD */
234 };
235
236
237 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
238 void *timeout_ctx);
239 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
240 enum nl80211_iftype nlmode);
241 static int
242 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
243 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
244 const u8 *addr, int cmd, u16 reason_code,
245 int local_state_change);
246 static void nl80211_remove_monitor_interface(
247 struct wpa_driver_nl80211_data *drv);
248 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
249 unsigned int freq, unsigned int wait,
250 const u8 *buf, size_t buf_len, u64 *cookie,
251 int no_cck);
252 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
253
254 #ifdef HOSTAPD
255 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
256 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
257 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
258 static int wpa_driver_nl80211_if_remove(void *priv,
259 enum wpa_driver_if_type type,
260 const char *ifname);
261 #else /* HOSTAPD */
262 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
263 {
264 }
265
266 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
267 {
268 }
269
270 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
271 {
272 return 0;
273 }
274 #endif /* HOSTAPD */
275
276 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
277 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
278 int ifindex, int disabled);
279
280 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
281
282
283 static int is_ap_interface(enum nl80211_iftype nlmode)
284 {
285 return (nlmode == NL80211_IFTYPE_AP ||
286 nlmode == NL80211_IFTYPE_P2P_GO);
287 }
288
289
290 static int is_sta_interface(enum nl80211_iftype nlmode)
291 {
292 return (nlmode == NL80211_IFTYPE_STATION ||
293 nlmode == NL80211_IFTYPE_P2P_CLIENT);
294 }
295
296
297 static int is_p2p_interface(enum nl80211_iftype nlmode)
298 {
299 return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
300 nlmode == NL80211_IFTYPE_P2P_GO);
301 }
302
303
304 struct nl80211_bss_info_arg {
305 struct wpa_driver_nl80211_data *drv;
306 struct wpa_scan_results *res;
307 unsigned int assoc_freq;
308 u8 assoc_bssid[ETH_ALEN];
309 };
310
311 static int bss_info_handler(struct nl_msg *msg, void *arg);
312
313
314 /* nl80211 code */
315 static int ack_handler(struct nl_msg *msg, void *arg)
316 {
317 int *err = arg;
318 *err = 0;
319 return NL_STOP;
320 }
321
322 static int finish_handler(struct nl_msg *msg, void *arg)
323 {
324 int *ret = arg;
325 *ret = 0;
326 return NL_SKIP;
327 }
328
329 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
330 void *arg)
331 {
332 int *ret = arg;
333 *ret = err->error;
334 return NL_SKIP;
335 }
336
337
338 static int no_seq_check(struct nl_msg *msg, void *arg)
339 {
340 return NL_OK;
341 }
342
343
344 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
345 struct nl_handle *nl_handle, struct nl_msg *msg,
346 int (*valid_handler)(struct nl_msg *, void *),
347 void *valid_data)
348 {
349 struct nl_cb *cb;
350 int err = -ENOMEM;
351
352 cb = nl_cb_clone(drv->global->nl_cb);
353 if (!cb)
354 goto out;
355
356 err = nl_send_auto_complete(nl_handle, msg);
357 if (err < 0)
358 goto out;
359
360 err = 1;
361
362 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
363 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
364 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
365
366 if (valid_handler)
367 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
368 valid_handler, valid_data);
369
370 while (err > 0)
371 nl_recvmsgs(nl_handle, cb);
372 out:
373 nl_cb_put(cb);
374 nlmsg_free(msg);
375 return err;
376 }
377
378
379 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
380 struct nl_msg *msg,
381 int (*valid_handler)(struct nl_msg *, void *),
382 void *valid_data)
383 {
384 return send_and_recv(drv, drv->global->nl.handle, msg, valid_handler,
385 valid_data);
386 }
387
388
389 struct family_data {
390 const char *group;
391 int id;
392 };
393
394
395 static int family_handler(struct nl_msg *msg, void *arg)
396 {
397 struct family_data *res = arg;
398 struct nlattr *tb[CTRL_ATTR_MAX + 1];
399 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
400 struct nlattr *mcgrp;
401 int i;
402
403 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
404 genlmsg_attrlen(gnlh, 0), NULL);
405 if (!tb[CTRL_ATTR_MCAST_GROUPS])
406 return NL_SKIP;
407
408 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
409 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
410 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
411 nla_len(mcgrp), NULL);
412 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
413 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
414 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
415 res->group,
416 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
417 continue;
418 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
419 break;
420 };
421
422 return NL_SKIP;
423 }
424
425
426 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
427 const char *family, const char *group)
428 {
429 struct nl_msg *msg;
430 int ret = -1;
431 struct family_data res = { group, -ENOENT };
432
433 msg = nlmsg_alloc();
434 if (!msg)
435 return -ENOMEM;
436 genlmsg_put(msg, 0, 0,
437 genl_ctrl_resolve(drv->global->nl.handle, "nlctrl"),
438 0, 0, CTRL_CMD_GETFAMILY, 0);
439 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
440
441 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
442 msg = NULL;
443 if (ret == 0)
444 ret = res.id;
445
446 nla_put_failure:
447 nlmsg_free(msg);
448 return ret;
449 }
450
451
452 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
453 struct nl_msg *msg, int flags, uint8_t cmd)
454 {
455 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
456 0, flags, cmd, 0);
457 }
458
459
460 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
461 {
462 struct i802_bss *bss = priv;
463 struct wpa_driver_nl80211_data *drv = bss->drv;
464 if (!drv->associated)
465 return -1;
466 os_memcpy(bssid, drv->bssid, ETH_ALEN);
467 return 0;
468 }
469
470
471 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
472 {
473 struct i802_bss *bss = priv;
474 struct wpa_driver_nl80211_data *drv = bss->drv;
475 if (!drv->associated)
476 return -1;
477 os_memcpy(ssid, drv->ssid, drv->ssid_len);
478 return drv->ssid_len;
479 }
480
481
482 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
483 char *buf, size_t len, int del)
484 {
485 union wpa_event_data event;
486
487 os_memset(&event, 0, sizeof(event));
488 if (len > sizeof(event.interface_status.ifname))
489 len = sizeof(event.interface_status.ifname) - 1;
490 os_memcpy(event.interface_status.ifname, buf, len);
491 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
492 EVENT_INTERFACE_ADDED;
493
494 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
495 del ? "DEL" : "NEW",
496 event.interface_status.ifname,
497 del ? "removed" : "added");
498
499 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
500 if (del)
501 drv->if_removed = 1;
502 else
503 drv->if_removed = 0;
504 }
505
506 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
507 }
508
509
510 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
511 u8 *buf, size_t len)
512 {
513 int attrlen, rta_len;
514 struct rtattr *attr;
515
516 attrlen = len;
517 attr = (struct rtattr *) buf;
518
519 rta_len = RTA_ALIGN(sizeof(struct rtattr));
520 while (RTA_OK(attr, attrlen)) {
521 if (attr->rta_type == IFLA_IFNAME) {
522 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
523 == 0)
524 return 1;
525 else
526 break;
527 }
528 attr = RTA_NEXT(attr, attrlen);
529 }
530
531 return 0;
532 }
533
534
535 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
536 int ifindex, u8 *buf, size_t len)
537 {
538 if (drv->ifindex == ifindex)
539 return 1;
540
541 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
542 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
543 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
544 "interface");
545 wpa_driver_nl80211_finish_drv_init(drv);
546 return 1;
547 }
548
549 return 0;
550 }
551
552
553 static struct wpa_driver_nl80211_data *
554 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
555 {
556 struct wpa_driver_nl80211_data *drv;
557 dl_list_for_each(drv, &global->interfaces,
558 struct wpa_driver_nl80211_data, list) {
559 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
560 have_ifidx(drv, idx))
561 return drv;
562 }
563 return NULL;
564 }
565
566
567 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
568 struct ifinfomsg *ifi,
569 u8 *buf, size_t len)
570 {
571 struct nl80211_global *global = ctx;
572 struct wpa_driver_nl80211_data *drv;
573 int attrlen, rta_len;
574 struct rtattr *attr;
575 u32 brid = 0;
576
577 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
578 if (!drv) {
579 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
580 "ifindex %d", ifi->ifi_index);
581 return;
582 }
583
584 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
585 "(%s%s%s%s)",
586 drv->operstate, ifi->ifi_flags,
587 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
588 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
589 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
590 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
591
592 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
593 char namebuf[IFNAMSIZ];
594 if (if_indextoname(ifi->ifi_index, namebuf) &&
595 linux_iface_up(drv->global->ioctl_sock,
596 drv->first_bss.ifname) > 0) {
597 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
598 "event since interface %s is up", namebuf);
599 return;
600 }
601 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
602 if (drv->ignore_if_down_event) {
603 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
604 "event generated by mode change");
605 drv->ignore_if_down_event = 0;
606 } else {
607 drv->if_disabled = 1;
608 wpa_supplicant_event(drv->ctx,
609 EVENT_INTERFACE_DISABLED, NULL);
610 }
611 }
612
613 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
614 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
615 drv->if_disabled = 0;
616 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
617 }
618
619 /*
620 * Some drivers send the association event before the operup event--in
621 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
622 * fails. This will hit us when wpa_supplicant does not need to do
623 * IEEE 802.1X authentication
624 */
625 if (drv->operstate == 1 &&
626 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
627 !(ifi->ifi_flags & IFF_RUNNING))
628 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
629 -1, IF_OPER_UP);
630
631 attrlen = len;
632 attr = (struct rtattr *) buf;
633 rta_len = RTA_ALIGN(sizeof(struct rtattr));
634 while (RTA_OK(attr, attrlen)) {
635 if (attr->rta_type == IFLA_IFNAME) {
636 wpa_driver_nl80211_event_link(
637 drv,
638 ((char *) attr) + rta_len,
639 attr->rta_len - rta_len, 0);
640 } else if (attr->rta_type == IFLA_MASTER)
641 brid = nla_get_u32((struct nlattr *) attr);
642 attr = RTA_NEXT(attr, attrlen);
643 }
644
645 if (ifi->ifi_family == AF_BRIDGE && brid) {
646 /* device has been added to bridge */
647 char namebuf[IFNAMSIZ];
648 if_indextoname(brid, namebuf);
649 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
650 brid, namebuf);
651 add_ifidx(drv, brid);
652 }
653 }
654
655
656 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
657 struct ifinfomsg *ifi,
658 u8 *buf, size_t len)
659 {
660 struct nl80211_global *global = ctx;
661 struct wpa_driver_nl80211_data *drv;
662 int attrlen, rta_len;
663 struct rtattr *attr;
664 u32 brid = 0;
665
666 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
667 if (!drv) {
668 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
669 "foreign ifindex %d", ifi->ifi_index);
670 return;
671 }
672
673 attrlen = len;
674 attr = (struct rtattr *) buf;
675
676 rta_len = RTA_ALIGN(sizeof(struct rtattr));
677 while (RTA_OK(attr, attrlen)) {
678 if (attr->rta_type == IFLA_IFNAME) {
679 wpa_driver_nl80211_event_link(
680 drv,
681 ((char *) attr) + rta_len,
682 attr->rta_len - rta_len, 1);
683 } else if (attr->rta_type == IFLA_MASTER)
684 brid = nla_get_u32((struct nlattr *) attr);
685 attr = RTA_NEXT(attr, attrlen);
686 }
687
688 if (ifi->ifi_family == AF_BRIDGE && brid) {
689 /* device has been removed from bridge */
690 char namebuf[IFNAMSIZ];
691 if_indextoname(brid, namebuf);
692 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
693 "%s", brid, namebuf);
694 del_ifidx(drv, brid);
695 }
696 }
697
698
699 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
700 const u8 *frame, size_t len)
701 {
702 const struct ieee80211_mgmt *mgmt;
703 union wpa_event_data event;
704
705 mgmt = (const struct ieee80211_mgmt *) frame;
706 if (len < 24 + sizeof(mgmt->u.auth)) {
707 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
708 "frame");
709 return;
710 }
711
712 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
713 os_memset(&event, 0, sizeof(event));
714 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
715 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
716 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
717 if (len > 24 + sizeof(mgmt->u.auth)) {
718 event.auth.ies = mgmt->u.auth.variable;
719 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
720 }
721
722 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
723 }
724
725
726 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
727 {
728 struct nl_msg *msg;
729 int ret;
730 struct nl80211_bss_info_arg arg;
731
732 os_memset(&arg, 0, sizeof(arg));
733 msg = nlmsg_alloc();
734 if (!msg)
735 goto nla_put_failure;
736
737 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
738 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
739
740 arg.drv = drv;
741 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
742 msg = NULL;
743 if (ret == 0) {
744 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
745 "associated BSS from scan results: %u MHz",
746 arg.assoc_freq);
747 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
748 }
749 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
750 "(%s)", ret, strerror(-ret));
751 nla_put_failure:
752 nlmsg_free(msg);
753 return drv->assoc_freq;
754 }
755
756
757 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
758 const u8 *frame, size_t len)
759 {
760 const struct ieee80211_mgmt *mgmt;
761 union wpa_event_data event;
762 u16 status;
763
764 mgmt = (const struct ieee80211_mgmt *) frame;
765 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
766 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
767 "frame");
768 return;
769 }
770
771 status = le_to_host16(mgmt->u.assoc_resp.status_code);
772 if (status != WLAN_STATUS_SUCCESS) {
773 os_memset(&event, 0, sizeof(event));
774 event.assoc_reject.bssid = mgmt->bssid;
775 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
776 event.assoc_reject.resp_ies =
777 (u8 *) mgmt->u.assoc_resp.variable;
778 event.assoc_reject.resp_ies_len =
779 len - 24 - sizeof(mgmt->u.assoc_resp);
780 }
781 event.assoc_reject.status_code = status;
782
783 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
784 return;
785 }
786
787 drv->associated = 1;
788 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
789
790 os_memset(&event, 0, sizeof(event));
791 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
792 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
793 event.assoc_info.resp_ies_len =
794 len - 24 - sizeof(mgmt->u.assoc_resp);
795 }
796
797 event.assoc_info.freq = drv->assoc_freq;
798
799 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
800 }
801
802
803 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
804 enum nl80211_commands cmd, struct nlattr *status,
805 struct nlattr *addr, struct nlattr *req_ie,
806 struct nlattr *resp_ie)
807 {
808 union wpa_event_data event;
809
810 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
811 /*
812 * Avoid reporting two association events that would confuse
813 * the core code.
814 */
815 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
816 "when using userspace SME", cmd);
817 return;
818 }
819
820 os_memset(&event, 0, sizeof(event));
821 if (cmd == NL80211_CMD_CONNECT &&
822 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
823 if (addr)
824 event.assoc_reject.bssid = nla_data(addr);
825 if (resp_ie) {
826 event.assoc_reject.resp_ies = nla_data(resp_ie);
827 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
828 }
829 event.assoc_reject.status_code = nla_get_u16(status);
830 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
831 return;
832 }
833
834 drv->associated = 1;
835 if (addr)
836 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
837
838 if (req_ie) {
839 event.assoc_info.req_ies = nla_data(req_ie);
840 event.assoc_info.req_ies_len = nla_len(req_ie);
841 }
842 if (resp_ie) {
843 event.assoc_info.resp_ies = nla_data(resp_ie);
844 event.assoc_info.resp_ies_len = nla_len(resp_ie);
845 }
846
847 event.assoc_info.freq = nl80211_get_assoc_freq(drv);
848
849 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
850 }
851
852
853 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
854 struct nlattr *reason, struct nlattr *addr)
855 {
856 union wpa_event_data data;
857
858 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
859 /*
860 * Avoid reporting two disassociation events that could
861 * confuse the core code.
862 */
863 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
864 "event when using userspace SME");
865 return;
866 }
867
868 drv->associated = 0;
869 os_memset(&data, 0, sizeof(data));
870 if (reason)
871 data.disassoc_info.reason_code = nla_get_u16(reason);
872 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
873 }
874
875
876 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
877 enum nl80211_commands cmd, struct nlattr *addr)
878 {
879 union wpa_event_data event;
880 enum wpa_event_type ev;
881
882 if (nla_len(addr) != ETH_ALEN)
883 return;
884
885 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
886 cmd, MAC2STR((u8 *) nla_data(addr)));
887
888 if (cmd == NL80211_CMD_AUTHENTICATE)
889 ev = EVENT_AUTH_TIMED_OUT;
890 else if (cmd == NL80211_CMD_ASSOCIATE)
891 ev = EVENT_ASSOC_TIMED_OUT;
892 else
893 return;
894
895 os_memset(&event, 0, sizeof(event));
896 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
897 wpa_supplicant_event(drv->ctx, ev, &event);
898 }
899
900
901 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
902 struct nlattr *freq, const u8 *frame, size_t len)
903 {
904 const struct ieee80211_mgmt *mgmt;
905 union wpa_event_data event;
906 u16 fc, stype;
907
908 mgmt = (const struct ieee80211_mgmt *) frame;
909 if (len < 24) {
910 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
911 return;
912 }
913
914 fc = le_to_host16(mgmt->frame_control);
915 stype = WLAN_FC_GET_STYPE(fc);
916
917 os_memset(&event, 0, sizeof(event));
918 if (freq) {
919 event.rx_action.freq = nla_get_u32(freq);
920 drv->last_mgmt_freq = event.rx_action.freq;
921 }
922 if (stype == WLAN_FC_STYPE_ACTION) {
923 event.rx_action.da = mgmt->da;
924 event.rx_action.sa = mgmt->sa;
925 event.rx_action.bssid = mgmt->bssid;
926 event.rx_action.category = mgmt->u.action.category;
927 event.rx_action.data = &mgmt->u.action.category + 1;
928 event.rx_action.len = frame + len - event.rx_action.data;
929 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
930 } else {
931 event.rx_mgmt.frame = frame;
932 event.rx_mgmt.frame_len = len;
933 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
934 }
935 }
936
937
938 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
939 struct nlattr *cookie, const u8 *frame,
940 size_t len, struct nlattr *ack)
941 {
942 union wpa_event_data event;
943 const struct ieee80211_hdr *hdr;
944 u16 fc;
945 u64 cookie_val;
946
947 if (!cookie)
948 return;
949
950 cookie_val = nla_get_u64(cookie);
951 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
952 "(ack=%d)",
953 (long long unsigned int) cookie_val,
954 cookie_val == drv->send_action_cookie ?
955 " (match)" : " (unknown)", ack != NULL);
956 if (cookie_val != drv->send_action_cookie)
957 return;
958
959 hdr = (const struct ieee80211_hdr *) frame;
960 fc = le_to_host16(hdr->frame_control);
961
962 os_memset(&event, 0, sizeof(event));
963 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
964 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
965 event.tx_status.dst = hdr->addr1;
966 event.tx_status.data = frame;
967 event.tx_status.data_len = len;
968 event.tx_status.ack = ack != NULL;
969 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
970 }
971
972
973 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
974 enum wpa_event_type type,
975 const u8 *frame, size_t len)
976 {
977 const struct ieee80211_mgmt *mgmt;
978 union wpa_event_data event;
979 const u8 *bssid = NULL;
980 u16 reason_code = 0;
981
982 mgmt = (const struct ieee80211_mgmt *) frame;
983 if (len >= 24) {
984 bssid = mgmt->bssid;
985
986 if (drv->associated != 0 &&
987 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
988 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
989 /*
990 * We have presumably received this deauth as a
991 * response to a clear_state_mismatch() outgoing
992 * deauth. Don't let it take us offline!
993 */
994 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
995 "from Unknown BSSID " MACSTR " -- ignoring",
996 MAC2STR(bssid));
997 return;
998 }
999 }
1000
1001 drv->associated = 0;
1002 os_memset(&event, 0, sizeof(event));
1003
1004 /* Note: Same offset for Reason Code in both frame subtypes */
1005 if (len >= 24 + sizeof(mgmt->u.deauth))
1006 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1007
1008 if (type == EVENT_DISASSOC) {
1009 event.disassoc_info.addr = bssid;
1010 event.disassoc_info.reason_code = reason_code;
1011 if (frame + len > mgmt->u.disassoc.variable) {
1012 event.disassoc_info.ie = mgmt->u.disassoc.variable;
1013 event.disassoc_info.ie_len = frame + len -
1014 mgmt->u.disassoc.variable;
1015 }
1016 } else {
1017 event.deauth_info.addr = bssid;
1018 event.deauth_info.reason_code = reason_code;
1019 if (frame + len > mgmt->u.deauth.variable) {
1020 event.deauth_info.ie = mgmt->u.deauth.variable;
1021 event.deauth_info.ie_len = frame + len -
1022 mgmt->u.deauth.variable;
1023 }
1024 }
1025
1026 wpa_supplicant_event(drv->ctx, type, &event);
1027 }
1028
1029
1030 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1031 enum wpa_event_type type,
1032 const u8 *frame, size_t len)
1033 {
1034 const struct ieee80211_mgmt *mgmt;
1035 union wpa_event_data event;
1036 u16 reason_code = 0;
1037
1038 if (len < 24)
1039 return;
1040
1041 mgmt = (const struct ieee80211_mgmt *) frame;
1042
1043 os_memset(&event, 0, sizeof(event));
1044 /* Note: Same offset for Reason Code in both frame subtypes */
1045 if (len >= 24 + sizeof(mgmt->u.deauth))
1046 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1047
1048 if (type == EVENT_UNPROT_DISASSOC) {
1049 event.unprot_disassoc.sa = mgmt->sa;
1050 event.unprot_disassoc.da = mgmt->da;
1051 event.unprot_disassoc.reason_code = reason_code;
1052 } else {
1053 event.unprot_deauth.sa = mgmt->sa;
1054 event.unprot_deauth.da = mgmt->da;
1055 event.unprot_deauth.reason_code = reason_code;
1056 }
1057
1058 wpa_supplicant_event(drv->ctx, type, &event);
1059 }
1060
1061
1062 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1063 enum nl80211_commands cmd, struct nlattr *frame,
1064 struct nlattr *addr, struct nlattr *timed_out,
1065 struct nlattr *freq, struct nlattr *ack,
1066 struct nlattr *cookie)
1067 {
1068 if (timed_out && addr) {
1069 mlme_timeout_event(drv, cmd, addr);
1070 return;
1071 }
1072
1073 if (frame == NULL) {
1074 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1075 "data", cmd);
1076 return;
1077 }
1078
1079 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1080 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1081 nla_data(frame), nla_len(frame));
1082
1083 switch (cmd) {
1084 case NL80211_CMD_AUTHENTICATE:
1085 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1086 break;
1087 case NL80211_CMD_ASSOCIATE:
1088 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1089 break;
1090 case NL80211_CMD_DEAUTHENTICATE:
1091 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1092 nla_data(frame), nla_len(frame));
1093 break;
1094 case NL80211_CMD_DISASSOCIATE:
1095 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1096 nla_data(frame), nla_len(frame));
1097 break;
1098 case NL80211_CMD_FRAME:
1099 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
1100 break;
1101 case NL80211_CMD_FRAME_TX_STATUS:
1102 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
1103 nla_len(frame), ack);
1104 break;
1105 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1106 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1107 nla_data(frame), nla_len(frame));
1108 break;
1109 case NL80211_CMD_UNPROT_DISASSOCIATE:
1110 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1111 nla_data(frame), nla_len(frame));
1112 break;
1113 default:
1114 break;
1115 }
1116 }
1117
1118
1119 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1120 struct nlattr *tb[])
1121 {
1122 union wpa_event_data data;
1123
1124 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1125 os_memset(&data, 0, sizeof(data));
1126 if (tb[NL80211_ATTR_MAC]) {
1127 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1128 nla_data(tb[NL80211_ATTR_MAC]),
1129 nla_len(tb[NL80211_ATTR_MAC]));
1130 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1131 }
1132 if (tb[NL80211_ATTR_KEY_SEQ]) {
1133 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1134 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1135 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1136 }
1137 if (tb[NL80211_ATTR_KEY_TYPE]) {
1138 enum nl80211_key_type key_type =
1139 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1140 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1141 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1142 data.michael_mic_failure.unicast = 1;
1143 } else
1144 data.michael_mic_failure.unicast = 1;
1145
1146 if (tb[NL80211_ATTR_KEY_IDX]) {
1147 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1148 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1149 }
1150
1151 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1152 }
1153
1154
1155 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1156 struct nlattr *tb[])
1157 {
1158 if (tb[NL80211_ATTR_MAC] == NULL) {
1159 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1160 "event");
1161 return;
1162 }
1163 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1164 drv->associated = 1;
1165 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1166 MAC2STR(drv->bssid));
1167
1168 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1169 }
1170
1171
1172 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1173 int cancel_event, struct nlattr *tb[])
1174 {
1175 unsigned int freq, chan_type, duration;
1176 union wpa_event_data data;
1177 u64 cookie;
1178
1179 if (tb[NL80211_ATTR_WIPHY_FREQ])
1180 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1181 else
1182 freq = 0;
1183
1184 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1185 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1186 else
1187 chan_type = 0;
1188
1189 if (tb[NL80211_ATTR_DURATION])
1190 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1191 else
1192 duration = 0;
1193
1194 if (tb[NL80211_ATTR_COOKIE])
1195 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1196 else
1197 cookie = 0;
1198
1199 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1200 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1201 cancel_event, freq, chan_type, duration,
1202 (long long unsigned int) cookie,
1203 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1204
1205 if (cookie != drv->remain_on_chan_cookie)
1206 return; /* not for us */
1207
1208 if (cancel_event)
1209 drv->pending_remain_on_chan = 0;
1210
1211 os_memset(&data, 0, sizeof(data));
1212 data.remain_on_channel.freq = freq;
1213 data.remain_on_channel.duration = duration;
1214 wpa_supplicant_event(drv->ctx, cancel_event ?
1215 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1216 EVENT_REMAIN_ON_CHANNEL, &data);
1217 }
1218
1219
1220 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1221 struct nlattr *tb[])
1222 {
1223 union wpa_event_data event;
1224 struct nlattr *nl;
1225 int rem;
1226 struct scan_info *info;
1227 #define MAX_REPORT_FREQS 50
1228 int freqs[MAX_REPORT_FREQS];
1229 int num_freqs = 0;
1230
1231 os_memset(&event, 0, sizeof(event));
1232 info = &event.scan_info;
1233 info->aborted = aborted;
1234
1235 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1236 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1237 struct wpa_driver_scan_ssid *s =
1238 &info->ssids[info->num_ssids];
1239 s->ssid = nla_data(nl);
1240 s->ssid_len = nla_len(nl);
1241 info->num_ssids++;
1242 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1243 break;
1244 }
1245 }
1246 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1247 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1248 {
1249 freqs[num_freqs] = nla_get_u32(nl);
1250 num_freqs++;
1251 if (num_freqs == MAX_REPORT_FREQS - 1)
1252 break;
1253 }
1254 info->freqs = freqs;
1255 info->num_freqs = num_freqs;
1256 }
1257 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1258 }
1259
1260
1261 static int get_link_signal(struct nl_msg *msg, void *arg)
1262 {
1263 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1264 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1265 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1266 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1267 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1268 };
1269 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1270 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1271 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1272 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1273 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1274 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1275 };
1276 struct wpa_signal_info *sig_change = arg;
1277
1278 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1279 genlmsg_attrlen(gnlh, 0), NULL);
1280 if (!tb[NL80211_ATTR_STA_INFO] ||
1281 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1282 tb[NL80211_ATTR_STA_INFO], policy))
1283 return NL_SKIP;
1284 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1285 return NL_SKIP;
1286
1287 sig_change->current_signal =
1288 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1289
1290 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1291 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1292 sinfo[NL80211_STA_INFO_TX_BITRATE],
1293 rate_policy)) {
1294 sig_change->current_txrate = 0;
1295 } else {
1296 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1297 sig_change->current_txrate =
1298 nla_get_u16(rinfo[
1299 NL80211_RATE_INFO_BITRATE]) * 100;
1300 }
1301 }
1302 }
1303
1304 return NL_SKIP;
1305 }
1306
1307
1308 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1309 struct wpa_signal_info *sig)
1310 {
1311 struct nl_msg *msg;
1312
1313 sig->current_signal = -9999;
1314 sig->current_txrate = 0;
1315
1316 msg = nlmsg_alloc();
1317 if (!msg)
1318 return -ENOMEM;
1319
1320 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1321
1322 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1323 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1324
1325 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1326 nla_put_failure:
1327 return -ENOBUFS;
1328 }
1329
1330
1331 static int get_link_noise(struct nl_msg *msg, void *arg)
1332 {
1333 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1334 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1335 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1336 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1337 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1338 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1339 };
1340 struct wpa_signal_info *sig_change = arg;
1341
1342 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1343 genlmsg_attrlen(gnlh, 0), NULL);
1344
1345 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1346 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1347 return NL_SKIP;
1348 }
1349
1350 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1351 tb[NL80211_ATTR_SURVEY_INFO],
1352 survey_policy)) {
1353 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1354 "attributes!");
1355 return NL_SKIP;
1356 }
1357
1358 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1359 return NL_SKIP;
1360
1361 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1362 sig_change->frequency)
1363 return NL_SKIP;
1364
1365 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1366 return NL_SKIP;
1367
1368 sig_change->current_noise =
1369 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1370
1371 return NL_SKIP;
1372 }
1373
1374
1375 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1376 struct wpa_signal_info *sig_change)
1377 {
1378 struct nl_msg *msg;
1379
1380 sig_change->current_noise = 9999;
1381 sig_change->frequency = drv->assoc_freq;
1382
1383 msg = nlmsg_alloc();
1384 if (!msg)
1385 return -ENOMEM;
1386
1387 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1388
1389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1390
1391 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1392 nla_put_failure:
1393 return -ENOBUFS;
1394 }
1395
1396
1397 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1398 {
1399 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1400 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1401 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1402 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1403 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1404 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1405 };
1406 struct wpa_scan_results *scan_results = arg;
1407 struct wpa_scan_res *scan_res;
1408 size_t i;
1409
1410 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1411 genlmsg_attrlen(gnlh, 0), NULL);
1412
1413 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1414 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1415 return NL_SKIP;
1416 }
1417
1418 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1419 tb[NL80211_ATTR_SURVEY_INFO],
1420 survey_policy)) {
1421 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1422 "attributes");
1423 return NL_SKIP;
1424 }
1425
1426 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1427 return NL_SKIP;
1428
1429 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1430 return NL_SKIP;
1431
1432 for (i = 0; i < scan_results->num; ++i) {
1433 scan_res = scan_results->res[i];
1434 if (!scan_res)
1435 continue;
1436 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1437 scan_res->freq)
1438 continue;
1439 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1440 continue;
1441 scan_res->noise = (s8)
1442 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1443 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1444 }
1445
1446 return NL_SKIP;
1447 }
1448
1449
1450 static int nl80211_get_noise_for_scan_results(
1451 struct wpa_driver_nl80211_data *drv,
1452 struct wpa_scan_results *scan_res)
1453 {
1454 struct nl_msg *msg;
1455
1456 msg = nlmsg_alloc();
1457 if (!msg)
1458 return -ENOMEM;
1459
1460 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1461
1462 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1463
1464 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1465 scan_res);
1466 nla_put_failure:
1467 return -ENOBUFS;
1468 }
1469
1470
1471 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1472 struct nlattr *tb[])
1473 {
1474 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1475 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1476 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1477 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1478 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1479 };
1480 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1481 enum nl80211_cqm_rssi_threshold_event event;
1482 union wpa_event_data ed;
1483 struct wpa_signal_info sig;
1484 int res;
1485
1486 if (tb[NL80211_ATTR_CQM] == NULL ||
1487 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1488 cqm_policy)) {
1489 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1490 return;
1491 }
1492
1493 os_memset(&ed, 0, sizeof(ed));
1494
1495 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1496 if (!tb[NL80211_ATTR_MAC])
1497 return;
1498 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1499 ETH_ALEN);
1500 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1501 return;
1502 }
1503
1504 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1505 return;
1506 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1507
1508 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1509 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1510 "event: RSSI high");
1511 ed.signal_change.above_threshold = 1;
1512 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1513 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1514 "event: RSSI low");
1515 ed.signal_change.above_threshold = 0;
1516 } else
1517 return;
1518
1519 res = nl80211_get_link_signal(drv, &sig);
1520 if (res == 0) {
1521 ed.signal_change.current_signal = sig.current_signal;
1522 ed.signal_change.current_txrate = sig.current_txrate;
1523 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1524 sig.current_signal, sig.current_txrate);
1525 }
1526
1527 res = nl80211_get_link_noise(drv, &sig);
1528 if (res == 0) {
1529 ed.signal_change.current_noise = sig.current_noise;
1530 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1531 sig.current_noise);
1532 }
1533
1534 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1535 }
1536
1537
1538 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1539 struct nlattr **tb)
1540 {
1541 u8 *addr;
1542 union wpa_event_data data;
1543
1544 if (tb[NL80211_ATTR_MAC] == NULL)
1545 return;
1546 addr = nla_data(tb[NL80211_ATTR_MAC]);
1547 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1548
1549 if (is_ap_interface(drv->nlmode) && drv->no_monitor_iface_capab) {
1550 u8 *ies = NULL;
1551 size_t ies_len = 0;
1552 if (tb[NL80211_ATTR_IE]) {
1553 ies = nla_data(tb[NL80211_ATTR_IE]);
1554 ies_len = nla_len(tb[NL80211_ATTR_IE]);
1555 }
1556 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1557 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1558 return;
1559 }
1560
1561 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1562 return;
1563
1564 os_memset(&data, 0, sizeof(data));
1565 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1566 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1567 }
1568
1569
1570 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1571 struct nlattr **tb)
1572 {
1573 u8 *addr;
1574 union wpa_event_data data;
1575
1576 if (tb[NL80211_ATTR_MAC] == NULL)
1577 return;
1578 addr = nla_data(tb[NL80211_ATTR_MAC]);
1579 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1580 MAC2STR(addr));
1581
1582 if (is_ap_interface(drv->nlmode) && drv->no_monitor_iface_capab) {
1583 drv_event_disassoc(drv->ctx, addr);
1584 return;
1585 }
1586
1587 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1588 return;
1589
1590 os_memset(&data, 0, sizeof(data));
1591 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1592 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1593 }
1594
1595
1596 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1597 struct nlattr **tb)
1598 {
1599 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1600 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1601 [NL80211_REKEY_DATA_KEK] = {
1602 .minlen = NL80211_KEK_LEN,
1603 .maxlen = NL80211_KEK_LEN,
1604 },
1605 [NL80211_REKEY_DATA_KCK] = {
1606 .minlen = NL80211_KCK_LEN,
1607 .maxlen = NL80211_KCK_LEN,
1608 },
1609 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1610 .minlen = NL80211_REPLAY_CTR_LEN,
1611 .maxlen = NL80211_REPLAY_CTR_LEN,
1612 },
1613 };
1614 union wpa_event_data data;
1615
1616 if (!tb[NL80211_ATTR_MAC])
1617 return;
1618 if (!tb[NL80211_ATTR_REKEY_DATA])
1619 return;
1620 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
1621 tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
1622 return;
1623 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
1624 return;
1625
1626 os_memset(&data, 0, sizeof(data));
1627 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
1628 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
1629 MAC2STR(data.driver_gtk_rekey.bssid));
1630 data.driver_gtk_rekey.replay_ctr =
1631 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
1632 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
1633 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
1634 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
1635 }
1636
1637
1638 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
1639 struct nlattr **tb)
1640 {
1641 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
1642 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
1643 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
1644 [NL80211_PMKSA_CANDIDATE_BSSID] = {
1645 .minlen = ETH_ALEN,
1646 .maxlen = ETH_ALEN,
1647 },
1648 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
1649 };
1650 union wpa_event_data data;
1651
1652 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
1653 return;
1654 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
1655 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
1656 return;
1657 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
1658 !cand[NL80211_PMKSA_CANDIDATE_BSSID])
1659 return;
1660
1661 os_memset(&data, 0, sizeof(data));
1662 os_memcpy(data.pmkid_candidate.bssid,
1663 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
1664 data.pmkid_candidate.index =
1665 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
1666 data.pmkid_candidate.preauth =
1667 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
1668 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
1669 }
1670
1671
1672 static int process_event(struct nl_msg *msg, void *arg)
1673 {
1674 struct wpa_driver_nl80211_data *drv = arg;
1675 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1676 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1677
1678 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1679 genlmsg_attrlen(gnlh, 0), NULL);
1680
1681 if (tb[NL80211_ATTR_IFINDEX]) {
1682 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1683 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1684 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1685 " for foreign interface (ifindex %d)",
1686 gnlh->cmd, ifindex);
1687 return NL_SKIP;
1688 }
1689 }
1690
1691 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
1692 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1693 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1694 wpa_driver_nl80211_set_mode(&drv->first_bss,
1695 drv->ap_scan_as_station);
1696 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1697 }
1698
1699 switch (gnlh->cmd) {
1700 case NL80211_CMD_TRIGGER_SCAN:
1701 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1702 break;
1703 case NL80211_CMD_START_SCHED_SCAN:
1704 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
1705 break;
1706 case NL80211_CMD_SCHED_SCAN_STOPPED:
1707 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
1708 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
1709 break;
1710 case NL80211_CMD_NEW_SCAN_RESULTS:
1711 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1712 drv->scan_complete_events = 1;
1713 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1714 drv->ctx);
1715 send_scan_event(drv, 0, tb);
1716 break;
1717 case NL80211_CMD_SCHED_SCAN_RESULTS:
1718 wpa_printf(MSG_DEBUG,
1719 "nl80211: New sched scan results available");
1720 send_scan_event(drv, 0, tb);
1721 break;
1722 case NL80211_CMD_SCAN_ABORTED:
1723 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1724 /*
1725 * Need to indicate that scan results are available in order
1726 * not to make wpa_supplicant stop its scanning.
1727 */
1728 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1729 drv->ctx);
1730 send_scan_event(drv, 1, tb);
1731 break;
1732 case NL80211_CMD_AUTHENTICATE:
1733 case NL80211_CMD_ASSOCIATE:
1734 case NL80211_CMD_DEAUTHENTICATE:
1735 case NL80211_CMD_DISASSOCIATE:
1736 case NL80211_CMD_FRAME:
1737 case NL80211_CMD_FRAME_TX_STATUS:
1738 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1739 case NL80211_CMD_UNPROT_DISASSOCIATE:
1740 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1741 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1742 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1743 tb[NL80211_ATTR_COOKIE]);
1744 break;
1745 case NL80211_CMD_CONNECT:
1746 case NL80211_CMD_ROAM:
1747 mlme_event_connect(drv, gnlh->cmd,
1748 tb[NL80211_ATTR_STATUS_CODE],
1749 tb[NL80211_ATTR_MAC],
1750 tb[NL80211_ATTR_REQ_IE],
1751 tb[NL80211_ATTR_RESP_IE]);
1752 break;
1753 case NL80211_CMD_DISCONNECT:
1754 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
1755 tb[NL80211_ATTR_MAC]);
1756 break;
1757 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1758 mlme_event_michael_mic_failure(drv, tb);
1759 break;
1760 case NL80211_CMD_JOIN_IBSS:
1761 mlme_event_join_ibss(drv, tb);
1762 break;
1763 case NL80211_CMD_REMAIN_ON_CHANNEL:
1764 mlme_event_remain_on_channel(drv, 0, tb);
1765 break;
1766 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1767 mlme_event_remain_on_channel(drv, 1, tb);
1768 break;
1769 case NL80211_CMD_NOTIFY_CQM:
1770 nl80211_cqm_event(drv, tb);
1771 break;
1772 case NL80211_CMD_REG_CHANGE:
1773 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1774 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1775 NULL);
1776 break;
1777 case NL80211_CMD_REG_BEACON_HINT:
1778 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1779 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1780 NULL);
1781 break;
1782 case NL80211_CMD_NEW_STATION:
1783 nl80211_new_station_event(drv, tb);
1784 break;
1785 case NL80211_CMD_DEL_STATION:
1786 nl80211_del_station_event(drv, tb);
1787 break;
1788 case NL80211_CMD_SET_REKEY_OFFLOAD:
1789 nl80211_rekey_offload_event(drv, tb);
1790 break;
1791 case NL80211_CMD_PMKSA_CANDIDATE:
1792 nl80211_pmksa_candidate_event(drv, tb);
1793 break;
1794 default:
1795 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1796 "(cmd=%d)", gnlh->cmd);
1797 break;
1798 }
1799
1800 return NL_SKIP;
1801 }
1802
1803
1804 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1805 void *handle)
1806 {
1807 struct nl_cb *cb;
1808 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1809
1810 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1811
1812 cb = nl_cb_clone(drv->global->nl_cb);
1813 if (!cb)
1814 return;
1815 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1816 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1817 nl_recvmsgs(handle, cb);
1818 nl_cb_put(cb);
1819 }
1820
1821
1822 /**
1823 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1824 * @priv: driver_nl80211 private data
1825 * @alpha2_arg: country to which to switch to
1826 * Returns: 0 on success, -1 on failure
1827 *
1828 * This asks nl80211 to set the regulatory domain for given
1829 * country ISO / IEC alpha2.
1830 */
1831 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1832 {
1833 struct i802_bss *bss = priv;
1834 struct wpa_driver_nl80211_data *drv = bss->drv;
1835 char alpha2[3];
1836 struct nl_msg *msg;
1837
1838 msg = nlmsg_alloc();
1839 if (!msg)
1840 return -ENOMEM;
1841
1842 alpha2[0] = alpha2_arg[0];
1843 alpha2[1] = alpha2_arg[1];
1844 alpha2[2] = '\0';
1845
1846 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1847
1848 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1849 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1850 return -EINVAL;
1851 return 0;
1852 nla_put_failure:
1853 return -EINVAL;
1854 }
1855
1856
1857 struct wiphy_info_data {
1858 struct wpa_driver_capa *capa;
1859
1860 unsigned int error:1;
1861 };
1862
1863
1864 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1865 {
1866 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1867 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1868 struct wiphy_info_data *info = arg;
1869 int p2p_go_supported = 0, p2p_client_supported = 0;
1870 int p2p_concurrent = 0;
1871 int auth_supported = 0, connect_supported = 0;
1872 struct wpa_driver_capa *capa = info->capa;
1873 static struct nla_policy
1874 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
1875 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
1876 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
1877 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
1878 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
1879 },
1880 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
1881 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
1882 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
1883 };
1884
1885 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1886 genlmsg_attrlen(gnlh, 0), NULL);
1887
1888 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1889 capa->max_scan_ssids =
1890 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1891
1892 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
1893 capa->max_sched_scan_ssids =
1894 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
1895
1896 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
1897 capa->max_match_sets =
1898 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
1899
1900 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1901 struct nlattr *nl_mode;
1902 int i;
1903 nla_for_each_nested(nl_mode,
1904 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1905 switch (nla_type(nl_mode)) {
1906 case NL80211_IFTYPE_AP:
1907 capa->flags |= WPA_DRIVER_FLAGS_AP;
1908 break;
1909 case NL80211_IFTYPE_P2P_GO:
1910 p2p_go_supported = 1;
1911 break;
1912 case NL80211_IFTYPE_P2P_CLIENT:
1913 p2p_client_supported = 1;
1914 break;
1915 }
1916 }
1917 }
1918
1919 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
1920 struct nlattr *nl_combi;
1921 int rem_combi;
1922
1923 nla_for_each_nested(nl_combi,
1924 tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
1925 rem_combi) {
1926 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
1927 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
1928 struct nlattr *nl_limit, *nl_mode;
1929 int err, rem_limit, rem_mode;
1930 int combination_has_p2p = 0, combination_has_mgd = 0;
1931
1932 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
1933 nl_combi,
1934 iface_combination_policy);
1935 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
1936 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
1937 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
1938 goto broken_combination;
1939
1940 nla_for_each_nested(nl_limit,
1941 tb_comb[NL80211_IFACE_COMB_LIMITS],
1942 rem_limit) {
1943 err = nla_parse_nested(tb_limit,
1944 MAX_NL80211_IFACE_LIMIT,
1945 nl_limit,
1946 iface_limit_policy);
1947 if (err ||
1948 !tb_limit[NL80211_IFACE_LIMIT_TYPES])
1949 goto broken_combination;
1950
1951 nla_for_each_nested(
1952 nl_mode,
1953 tb_limit[NL80211_IFACE_LIMIT_TYPES],
1954 rem_mode) {
1955 int ift = nla_type(nl_mode);
1956 if (ift == NL80211_IFTYPE_P2P_GO ||
1957 ift == NL80211_IFTYPE_P2P_CLIENT)
1958 combination_has_p2p = 1;
1959 if (ift == NL80211_IFTYPE_STATION)
1960 combination_has_mgd = 1;
1961 }
1962 if (combination_has_p2p && combination_has_mgd)
1963 break;
1964 }
1965
1966 if (combination_has_p2p && combination_has_mgd) {
1967 p2p_concurrent = 1;
1968 break;
1969 }
1970
1971 broken_combination:
1972 ;
1973 }
1974 }
1975
1976 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1977 struct nlattr *nl_cmd;
1978 int i;
1979
1980 nla_for_each_nested(nl_cmd,
1981 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1982 switch (nla_get_u32(nl_cmd)) {
1983 case NL80211_CMD_AUTHENTICATE:
1984 auth_supported = 1;
1985 break;
1986 case NL80211_CMD_CONNECT:
1987 connect_supported = 1;
1988 break;
1989 case NL80211_CMD_START_SCHED_SCAN:
1990 capa->sched_scan_supported = 1;
1991 break;
1992 }
1993 }
1994 }
1995
1996 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
1997 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
1998 "off-channel TX");
1999 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2000 }
2001
2002 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2003 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2004 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2005 }
2006
2007 /* default to 5000 since early versions of mac80211 don't set it */
2008 capa->max_remain_on_chan = 5000;
2009
2010 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2011 capa->max_remain_on_chan =
2012 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2013
2014 if (auth_supported)
2015 capa->flags |= WPA_DRIVER_FLAGS_SME;
2016 else if (!connect_supported) {
2017 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2018 "authentication/association or connect commands");
2019 info->error = 1;
2020 }
2021
2022 if (p2p_go_supported && p2p_client_supported)
2023 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2024 if (p2p_concurrent) {
2025 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2026 "interface (driver advertised support)");
2027 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2028 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2029 }
2030
2031 if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2032 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2033 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2034
2035 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2036 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2037 capa->flags |=
2038 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2039 }
2040 }
2041
2042 return NL_SKIP;
2043 }
2044
2045
2046 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2047 struct wiphy_info_data *info)
2048 {
2049 struct nl_msg *msg;
2050
2051 os_memset(info, 0, sizeof(*info));
2052 info->capa = &drv->capa;
2053
2054 msg = nlmsg_alloc();
2055 if (!msg)
2056 return -1;
2057
2058 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2059
2060 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2061
2062 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2063 return 0;
2064 msg = NULL;
2065 nla_put_failure:
2066 nlmsg_free(msg);
2067 return -1;
2068 }
2069
2070
2071 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2072 {
2073 struct wiphy_info_data info;
2074 if (wpa_driver_nl80211_get_info(drv, &info))
2075 return -1;
2076
2077 if (info.error)
2078 return -1;
2079
2080 drv->has_capability = 1;
2081 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2082 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2083 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2084 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2085 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2086 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2087 WPA_DRIVER_CAPA_ENC_WEP104 |
2088 WPA_DRIVER_CAPA_ENC_TKIP |
2089 WPA_DRIVER_CAPA_ENC_CCMP;
2090 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2091 WPA_DRIVER_AUTH_SHARED |
2092 WPA_DRIVER_AUTH_LEAP;
2093
2094 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2095 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2096 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2097 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2098
2099 return 0;
2100 }
2101
2102
2103 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2104 {
2105 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2106 if (global->nl_cb == NULL) {
2107 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2108 "callbacks");
2109 return -1;
2110 }
2111
2112 if (nl_create_handles(&global->nl, global->nl_cb, "nl"))
2113 return -1;
2114
2115 global->nl80211_id = genl_ctrl_resolve(global->nl.handle, "nl80211");
2116 if (global->nl80211_id < 0) {
2117 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2118 "found");
2119 return -1;
2120 }
2121
2122 return 0;
2123 }
2124
2125
2126 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2127 {
2128 struct nl80211_global *global = drv->global;
2129 int ret;
2130
2131 /* Initialize generic netlink and nl80211 */
2132
2133 if (nl_create_handles(&drv->nl_event, global->nl_cb, "event"))
2134 goto err3;
2135
2136 ret = nl_get_multicast_id(drv, "nl80211", "scan");
2137 if (ret >= 0)
2138 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2139 if (ret < 0) {
2140 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2141 "membership for scan events: %d (%s)",
2142 ret, strerror(-ret));
2143 goto err4;
2144 }
2145
2146 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
2147 if (ret >= 0)
2148 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2149 if (ret < 0) {
2150 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2151 "membership for mlme events: %d (%s)",
2152 ret, strerror(-ret));
2153 goto err4;
2154 }
2155
2156 ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
2157 if (ret >= 0)
2158 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2159 if (ret < 0) {
2160 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2161 "membership for regulatory events: %d (%s)",
2162 ret, strerror(-ret));
2163 /* Continue without regulatory events */
2164 }
2165
2166 eloop_register_read_sock(nl_socket_get_fd(drv->nl_event.handle),
2167 wpa_driver_nl80211_event_receive, drv,
2168 drv->nl_event.handle);
2169
2170 return 0;
2171
2172 err4:
2173 nl_destroy_handles(&drv->nl_event);
2174 err3:
2175 return -1;
2176 }
2177
2178
2179 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2180 {
2181 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2182 /*
2183 * This may be for any interface; use ifdown event to disable
2184 * interface.
2185 */
2186 }
2187
2188
2189 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2190 {
2191 struct wpa_driver_nl80211_data *drv = ctx;
2192 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2193 if (linux_set_iface_flags(drv->global->ioctl_sock,
2194 drv->first_bss.ifname, 1)) {
2195 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2196 "after rfkill unblock");
2197 return;
2198 }
2199 /* rtnetlink ifup handler will report interface as enabled */
2200 }
2201
2202
2203 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2204 {
2205 /* Find phy (radio) to which this interface belongs */
2206 char buf[90], *pos;
2207 int f, rv;
2208
2209 drv->phyname[0] = '\0';
2210 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2211 drv->first_bss.ifname);
2212 f = open(buf, O_RDONLY);
2213 if (f < 0) {
2214 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2215 buf, strerror(errno));
2216 return;
2217 }
2218
2219 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2220 close(f);
2221 if (rv < 0) {
2222 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2223 buf, strerror(errno));
2224 return;
2225 }
2226
2227 drv->phyname[rv] = '\0';
2228 pos = os_strchr(drv->phyname, '\n');
2229 if (pos)
2230 *pos = '\0';
2231 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2232 drv->first_bss.ifname, drv->phyname);
2233 }
2234
2235
2236 #ifdef CONFIG_AP
2237 static void nl80211_l2_read(void *ctx, const u8 *src_addr, const u8 *buf,
2238 size_t len)
2239 {
2240 wpa_printf(MSG_DEBUG, "nl80211: l2_packet read %u",
2241 (unsigned int) len);
2242 }
2243 #endif /* CONFIG_AP */
2244
2245
2246 /**
2247 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2248 * @ctx: context to be used when calling wpa_supplicant functions,
2249 * e.g., wpa_supplicant_event()
2250 * @ifname: interface name, e.g., wlan0
2251 * @global_priv: private driver global data from global_init()
2252 * Returns: Pointer to private data, %NULL on failure
2253 */
2254 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2255 void *global_priv)
2256 {
2257 struct wpa_driver_nl80211_data *drv;
2258 struct rfkill_config *rcfg;
2259 struct i802_bss *bss;
2260
2261 if (global_priv == NULL)
2262 return NULL;
2263 drv = os_zalloc(sizeof(*drv));
2264 if (drv == NULL)
2265 return NULL;
2266 drv->global = global_priv;
2267 drv->ctx = ctx;
2268 bss = &drv->first_bss;
2269 bss->drv = drv;
2270 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2271 drv->monitor_ifidx = -1;
2272 drv->monitor_sock = -1;
2273 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2274
2275 if (wpa_driver_nl80211_init_nl(drv)) {
2276 os_free(drv);
2277 return NULL;
2278 }
2279
2280 nl80211_get_phy_name(drv);
2281
2282 rcfg = os_zalloc(sizeof(*rcfg));
2283 if (rcfg == NULL)
2284 goto failed;
2285 rcfg->ctx = drv;
2286 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2287 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2288 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2289 drv->rfkill = rfkill_init(rcfg);
2290 if (drv->rfkill == NULL) {
2291 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2292 os_free(rcfg);
2293 }
2294
2295 if (wpa_driver_nl80211_finish_drv_init(drv))
2296 goto failed;
2297
2298 #ifdef CONFIG_AP
2299 drv->l2 = l2_packet_init(ifname, NULL, ETH_P_EAPOL,
2300 nl80211_l2_read, drv, 0);
2301 #endif /* CONFIG_AP */
2302
2303 if (drv->global) {
2304 dl_list_add(&drv->global->interfaces, &drv->list);
2305 drv->in_interface_list = 1;
2306 }
2307
2308 return bss;
2309
2310 failed:
2311 wpa_driver_nl80211_deinit(bss);
2312 return NULL;
2313 }
2314
2315
2316 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
2317 struct nl_handle *nl_handle,
2318 u16 type, const u8 *match, size_t match_len)
2319 {
2320 struct nl_msg *msg;
2321 int ret = -1;
2322
2323 msg = nlmsg_alloc();
2324 if (!msg)
2325 return -1;
2326
2327 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
2328
2329 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2330 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
2331 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
2332
2333 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
2334 msg = NULL;
2335 if (ret) {
2336 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
2337 "failed (type=%u): ret=%d (%s)",
2338 type, ret, strerror(-ret));
2339 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
2340 match, match_len);
2341 goto nla_put_failure;
2342 }
2343 ret = 0;
2344 nla_put_failure:
2345 nlmsg_free(msg);
2346 return ret;
2347 }
2348
2349
2350 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
2351 const u8 *match, size_t match_len)
2352 {
2353 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
2354 return nl80211_register_frame(drv, drv->nl_event.handle,
2355 type, match, match_len);
2356 }
2357
2358
2359 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
2360 {
2361 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
2362 /* GAS Initial Request */
2363 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
2364 return -1;
2365 /* GAS Initial Response */
2366 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
2367 return -1;
2368 /* GAS Comeback Request */
2369 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
2370 return -1;
2371 /* GAS Comeback Response */
2372 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
2373 return -1;
2374 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
2375 #ifdef CONFIG_P2P
2376 /* P2P Public Action */
2377 if (nl80211_register_action_frame(drv,
2378 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
2379 6) < 0)
2380 return -1;
2381 /* P2P Action */
2382 if (nl80211_register_action_frame(drv,
2383 (u8 *) "\x7f\x50\x6f\x9a\x09",
2384 5) < 0)
2385 return -1;
2386 #endif /* CONFIG_P2P */
2387 #ifdef CONFIG_IEEE80211W
2388 /* SA Query Response */
2389 if (nl80211_register_action_frame(drv, (u8 *) "\x08\x01", 2) < 0)
2390 return -1;
2391 #endif /* CONFIG_IEEE80211W */
2392 #ifdef CONFIG_TDLS
2393 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
2394 /* TDLS Discovery Response */
2395 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0e", 2) <
2396 0)
2397 return -1;
2398 }
2399 #endif /* CONFIG_TDLS */
2400
2401 /* FT Action frames */
2402 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
2403 return -1;
2404 else
2405 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
2406 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
2407
2408 /* WNM - BSS Transition Management Request */
2409 if (nl80211_register_action_frame(drv, (u8 *) "\x0a\x07", 2) < 0)
2410 return -1;
2411
2412 return 0;
2413 }
2414
2415
2416 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2417 {
2418 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2419 }
2420
2421
2422 static int
2423 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
2424 {
2425 struct i802_bss *bss = &drv->first_bss;
2426 int send_rfkill_event = 0;
2427
2428 drv->ifindex = if_nametoindex(bss->ifname);
2429 drv->first_bss.ifindex = drv->ifindex;
2430
2431 #ifndef HOSTAPD
2432 /*
2433 * Make sure the interface starts up in station mode unless this is a
2434 * dynamically added interface (e.g., P2P) that was already configured
2435 * with proper iftype.
2436 */
2437 if (drv->ifindex != drv->global->if_add_ifindex &&
2438 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
2439 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
2440 "use managed mode");
2441 return -1;
2442 }
2443
2444 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
2445 if (rfkill_is_blocked(drv->rfkill)) {
2446 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2447 "interface '%s' due to rfkill",
2448 bss->ifname);
2449 drv->if_disabled = 1;
2450 send_rfkill_event = 1;
2451 } else {
2452 wpa_printf(MSG_ERROR, "nl80211: Could not set "
2453 "interface '%s' UP", bss->ifname);
2454 return -1;
2455 }
2456 }
2457
2458 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2459 1, IF_OPER_DORMANT);
2460 #endif /* HOSTAPD */
2461
2462 if (wpa_driver_nl80211_capa(drv))
2463 return -1;
2464
2465 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2466 drv->addr))
2467 return -1;
2468
2469 if (nl80211_register_action_frames(drv) < 0) {
2470 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
2471 "frame processing - ignore for now");
2472 /*
2473 * Older kernel versions did not support this, so ignore the
2474 * error for now. Some functionality may not be available
2475 * because of this.
2476 */
2477 }
2478
2479 if (send_rfkill_event) {
2480 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2481 drv, drv->ctx);
2482 }
2483
2484 return 0;
2485 }
2486
2487
2488 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2489 {
2490 struct nl_msg *msg;
2491
2492 msg = nlmsg_alloc();
2493 if (!msg)
2494 return -ENOMEM;
2495
2496 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2498
2499 return send_and_recv_msgs(drv, msg, NULL, NULL);
2500 nla_put_failure:
2501 return -ENOBUFS;
2502 }
2503
2504
2505 /**
2506 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2507 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2508 *
2509 * Shut down driver interface and processing of driver events. Free
2510 * private data buffer if one was allocated in wpa_driver_nl80211_init().
2511 */
2512 static void wpa_driver_nl80211_deinit(void *priv)
2513 {
2514 struct i802_bss *bss = priv;
2515 struct wpa_driver_nl80211_data *drv = bss->drv;
2516
2517 #ifdef CONFIG_AP
2518 if (drv->l2)
2519 l2_packet_deinit(drv->l2);
2520 #endif /* CONFIG_AP */
2521
2522 if (drv->nl_preq.handle)
2523 wpa_driver_nl80211_probe_req_report(bss, 0);
2524 if (bss->added_if_into_bridge) {
2525 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2526 bss->ifname) < 0)
2527 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2528 "interface %s from bridge %s: %s",
2529 bss->ifname, bss->brname, strerror(errno));
2530 }
2531 if (bss->added_bridge) {
2532 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2533 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2534 "bridge %s: %s",
2535 bss->brname, strerror(errno));
2536 }
2537
2538 nl80211_remove_monitor_interface(drv);
2539
2540 if (is_ap_interface(drv->nlmode))
2541 wpa_driver_nl80211_del_beacon(drv);
2542
2543 #ifdef HOSTAPD
2544 if (drv->last_freq_ht) {
2545 /* Clear HT flags from the driver */
2546 struct hostapd_freq_params freq;
2547 os_memset(&freq, 0, sizeof(freq));
2548 freq.freq = drv->last_freq;
2549 i802_set_freq(priv, &freq);
2550 }
2551
2552 if (drv->eapol_sock >= 0) {
2553 eloop_unregister_read_sock(drv->eapol_sock);
2554 close(drv->eapol_sock);
2555 }
2556
2557 if (drv->if_indices != drv->default_if_indices)
2558 os_free(drv->if_indices);
2559 #endif /* HOSTAPD */
2560
2561 if (drv->disabled_11b_rates)
2562 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2563
2564 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2565 IF_OPER_UP);
2566 rfkill_deinit(drv->rfkill);
2567
2568 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2569
2570 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
2571 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
2572
2573 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_event.handle));
2574 nl_destroy_handles(&drv->nl_event);
2575
2576 os_free(drv->filter_ssids);
2577
2578 if (drv->in_interface_list)
2579 dl_list_del(&drv->list);
2580
2581 os_free(drv);
2582 }
2583
2584
2585 /**
2586 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2587 * @eloop_ctx: Driver private data
2588 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2589 *
2590 * This function can be used as registered timeout when starting a scan to
2591 * generate a scan completed event if the driver does not report this.
2592 */
2593 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2594 {
2595 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2596 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2597 wpa_driver_nl80211_set_mode(&drv->first_bss,
2598 drv->ap_scan_as_station);
2599 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2600 }
2601 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2602 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2603 }
2604
2605
2606 /**
2607 * wpa_driver_nl80211_scan - Request the driver to initiate scan
2608 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2609 * @params: Scan parameters
2610 * Returns: 0 on success, -1 on failure
2611 */
2612 static int wpa_driver_nl80211_scan(void *priv,
2613 struct wpa_driver_scan_params *params)
2614 {
2615 struct i802_bss *bss = priv;
2616 struct wpa_driver_nl80211_data *drv = bss->drv;
2617 int ret = 0, timeout;
2618 struct nl_msg *msg, *ssids, *freqs, *rates;
2619 size_t i;
2620
2621 msg = nlmsg_alloc();
2622 ssids = nlmsg_alloc();
2623 freqs = nlmsg_alloc();
2624 rates = nlmsg_alloc();
2625 if (!msg || !ssids || !freqs || !rates) {
2626 nlmsg_free(msg);
2627 nlmsg_free(ssids);
2628 nlmsg_free(freqs);
2629 nlmsg_free(rates);
2630 return -1;
2631 }
2632
2633 os_free(drv->filter_ssids);
2634 drv->filter_ssids = params->filter_ssids;
2635 params->filter_ssids = NULL;
2636 drv->num_filter_ssids = params->num_filter_ssids;
2637
2638 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
2639
2640 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2641
2642 for (i = 0; i < params->num_ssids; i++) {
2643 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2644 params->ssids[i].ssid,
2645 params->ssids[i].ssid_len);
2646 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2647 params->ssids[i].ssid);
2648 }
2649 if (params->num_ssids)
2650 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2651
2652 if (params->extra_ies) {
2653 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2654 params->extra_ies, params->extra_ies_len);
2655 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2656 params->extra_ies);
2657 }
2658
2659 if (params->freqs) {
2660 for (i = 0; params->freqs[i]; i++) {
2661 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2662 "MHz", params->freqs[i]);
2663 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2664 }
2665 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2666 }
2667
2668 if (params->p2p_probe) {
2669 /*
2670 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2671 * by masking out everything else apart from the OFDM rates 6,
2672 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2673 * rates are left enabled.
2674 */
2675 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
2676 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2677 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
2678
2679 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2680 }
2681
2682 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2683 msg = NULL;
2684 if (ret) {
2685 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2686 "(%s)", ret, strerror(-ret));
2687 #ifdef HOSTAPD
2688 if (is_ap_interface(drv->nlmode)) {
2689 /*
2690 * mac80211 does not allow scan requests in AP mode, so
2691 * try to do this in station mode.
2692 */
2693 if (wpa_driver_nl80211_set_mode(
2694 bss, NL80211_IFTYPE_STATION))
2695 goto nla_put_failure;
2696
2697 if (wpa_driver_nl80211_scan(drv, params)) {
2698 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2699 goto nla_put_failure;
2700 }
2701
2702 /* Restore AP mode when processing scan results */
2703 drv->ap_scan_as_station = drv->nlmode;
2704 ret = 0;
2705 } else
2706 goto nla_put_failure;
2707 #else /* HOSTAPD */
2708 goto nla_put_failure;
2709 #endif /* HOSTAPD */
2710 }
2711
2712 /* Not all drivers generate "scan completed" wireless event, so try to
2713 * read results after a timeout. */
2714 timeout = 10;
2715 if (drv->scan_complete_events) {
2716 /*
2717 * The driver seems to deliver events to notify when scan is
2718 * complete, so use longer timeout to avoid race conditions
2719 * with scanning and following association request.
2720 */
2721 timeout = 30;
2722 }
2723 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2724 "seconds", ret, timeout);
2725 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2726 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2727 drv, drv->ctx);
2728
2729 nla_put_failure:
2730 nlmsg_free(ssids);
2731 nlmsg_free(msg);
2732 nlmsg_free(freqs);
2733 nlmsg_free(rates);
2734 return ret;
2735 }
2736
2737
2738 /**
2739 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2740 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2741 * @params: Scan parameters
2742 * @interval: Interval between scan cycles in milliseconds
2743 * Returns: 0 on success, -1 on failure or if not supported
2744 */
2745 static int wpa_driver_nl80211_sched_scan(void *priv,
2746 struct wpa_driver_scan_params *params,
2747 u32 interval)
2748 {
2749 struct i802_bss *bss = priv;
2750 struct wpa_driver_nl80211_data *drv = bss->drv;
2751 int ret = 0;
2752 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
2753 size_t i;
2754
2755 msg = nlmsg_alloc();
2756 ssids = nlmsg_alloc();
2757 freqs = nlmsg_alloc();
2758 if (!msg || !ssids || !freqs) {
2759 nlmsg_free(msg);
2760 nlmsg_free(ssids);
2761 nlmsg_free(freqs);
2762 return -1;
2763 }
2764
2765 os_free(drv->filter_ssids);
2766 drv->filter_ssids = params->filter_ssids;
2767 params->filter_ssids = NULL;
2768 drv->num_filter_ssids = params->num_filter_ssids;
2769
2770 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
2771
2772 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2773
2774 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2775
2776 if (drv->num_filter_ssids) {
2777 match_sets = nlmsg_alloc();
2778
2779 for (i = 0; i < drv->num_filter_ssids; i++) {
2780 wpa_hexdump_ascii(MSG_MSGDUMP,
2781 "nl80211: Sched scan filter SSID",
2782 drv->filter_ssids[i].ssid,
2783 drv->filter_ssids[i].ssid_len);
2784
2785 match_set_ssid = nlmsg_alloc();
2786 nla_put(match_set_ssid,
2787 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2788 drv->filter_ssids[i].ssid_len,
2789 drv->filter_ssids[i].ssid);
2790
2791 nla_put_nested(match_sets, i + 1, match_set_ssid);
2792
2793 nlmsg_free(match_set_ssid);
2794 }
2795
2796 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
2797 match_sets);
2798 nlmsg_free(match_sets);
2799 }
2800
2801 for (i = 0; i < params->num_ssids; i++) {
2802 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
2803 params->ssids[i].ssid,
2804 params->ssids[i].ssid_len);
2805 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2806 params->ssids[i].ssid);
2807 }
2808 if (params->num_ssids)
2809 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2810
2811 if (params->extra_ies) {
2812 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
2813 params->extra_ies, params->extra_ies_len);
2814 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2815 params->extra_ies);
2816 }
2817
2818 if (params->freqs) {
2819 for (i = 0; params->freqs[i]; i++) {
2820 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2821 "MHz", params->freqs[i]);
2822 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2823 }
2824 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2825 }
2826
2827 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2828
2829 /* TODO: if we get an error here, we should fall back to normal scan */
2830
2831 msg = NULL;
2832 if (ret) {
2833 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2834 "ret=%d (%s)", ret, strerror(-ret));
2835 goto nla_put_failure;
2836 }
2837
2838 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2839 "scan interval %d msec", ret, interval);
2840
2841 nla_put_failure:
2842 nlmsg_free(ssids);
2843 nlmsg_free(msg);
2844 nlmsg_free(freqs);
2845 return ret;
2846 }
2847
2848
2849 /**
2850 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2851 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2852 * Returns: 0 on success, -1 on failure or if not supported
2853 */
2854 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2855 {
2856 struct i802_bss *bss = priv;
2857 struct wpa_driver_nl80211_data *drv = bss->drv;
2858 int ret = 0;
2859 struct nl_msg *msg;
2860
2861 msg = nlmsg_alloc();
2862 if (!msg)
2863 return -1;
2864
2865 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2866
2867 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2868
2869 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2870 msg = NULL;
2871 if (ret) {
2872 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2873 "ret=%d (%s)", ret, strerror(-ret));
2874 goto nla_put_failure;
2875 }
2876
2877 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2878
2879 nla_put_failure:
2880 nlmsg_free(msg);
2881 return ret;
2882 }
2883
2884
2885 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2886 {
2887 const u8 *end, *pos;
2888
2889 if (ies == NULL)
2890 return NULL;
2891
2892 pos = ies;
2893 end = ies + ies_len;
2894
2895 while (pos + 1 < end) {
2896 if (pos + 2 + pos[1] > end)
2897 break;
2898 if (pos[0] == ie)
2899 return pos;
2900 pos += 2 + pos[1];
2901 }
2902
2903 return NULL;
2904 }
2905
2906
2907 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2908 const u8 *ie, size_t ie_len)
2909 {
2910 const u8 *ssid;
2911 size_t i;
2912
2913 if (drv->filter_ssids == NULL)
2914 return 0;
2915
2916 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2917 if (ssid == NULL)
2918 return 1;
2919
2920 for (i = 0; i < drv->num_filter_ssids; i++) {
2921 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2922 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2923 0)
2924 return 0;
2925 }
2926
2927 return 1;
2928 }
2929
2930
2931 static int bss_info_handler(struct nl_msg *msg, void *arg)
2932 {
2933 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2934 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2935 struct nlattr *bss[NL80211_BSS_MAX + 1];
2936 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2937 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2938 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2939 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2940 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2941 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2942 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2943 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2944 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2945 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2946 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2947 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2948 };
2949 struct nl80211_bss_info_arg *_arg = arg;
2950 struct wpa_scan_results *res = _arg->res;
2951 struct wpa_scan_res **tmp;
2952 struct wpa_scan_res *r;
2953 const u8 *ie, *beacon_ie;
2954 size_t ie_len, beacon_ie_len;
2955 u8 *pos;
2956 size_t i;
2957
2958 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2959 genlmsg_attrlen(gnlh, 0), NULL);
2960 if (!tb[NL80211_ATTR_BSS])
2961 return NL_SKIP;
2962 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2963 bss_policy))
2964 return NL_SKIP;
2965 if (bss[NL80211_BSS_STATUS]) {
2966 enum nl80211_bss_status status;
2967 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2968 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2969 bss[NL80211_BSS_FREQUENCY]) {
2970 _arg->assoc_freq =
2971 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2972 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2973 _arg->assoc_freq);
2974 }
2975 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2976 bss[NL80211_BSS_BSSID]) {
2977 os_memcpy(_arg->assoc_bssid,
2978 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2979 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2980 MACSTR, MAC2STR(_arg->assoc_bssid));
2981 }
2982 }
2983 if (!res)
2984 return NL_SKIP;
2985 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2986 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2987 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2988 } else {
2989 ie = NULL;
2990 ie_len = 0;
2991 }
2992 if (bss[NL80211_BSS_BEACON_IES]) {
2993 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2994 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2995 } else {
2996 beacon_ie = NULL;
2997 beacon_ie_len = 0;
2998 }
2999
3000 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3001 ie ? ie_len : beacon_ie_len))
3002 return NL_SKIP;
3003
3004 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3005 if (r == NULL)
3006 return NL_SKIP;
3007 if (bss[NL80211_BSS_BSSID])
3008 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3009 ETH_ALEN);
3010 if (bss[NL80211_BSS_FREQUENCY])
3011 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3012 if (bss[NL80211_BSS_BEACON_INTERVAL])
3013 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3014 if (bss[NL80211_BSS_CAPABILITY])
3015 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3016 r->flags |= WPA_SCAN_NOISE_INVALID;
3017 if (bss[NL80211_BSS_SIGNAL_MBM]) {
3018 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3019 r->level /= 100; /* mBm to dBm */
3020 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3021 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3022 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3023 r->flags |= WPA_SCAN_LEVEL_INVALID;
3024 } else
3025 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3026 if (bss[NL80211_BSS_TSF])
3027 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3028 if (bss[NL80211_BSS_SEEN_MS_AGO])
3029 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3030 r->ie_len = ie_len;
3031 pos = (u8 *) (r + 1);
3032 if (ie) {
3033 os_memcpy(pos, ie, ie_len);
3034 pos += ie_len;
3035 }
3036 r->beacon_ie_len = beacon_ie_len;
3037 if (beacon_ie)
3038 os_memcpy(pos, beacon_ie, beacon_ie_len);
3039
3040 if (bss[NL80211_BSS_STATUS]) {
3041 enum nl80211_bss_status status;
3042 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3043 switch (status) {
3044 case NL80211_BSS_STATUS_AUTHENTICATED:
3045 r->flags |= WPA_SCAN_AUTHENTICATED;
3046 break;
3047 case NL80211_BSS_STATUS_ASSOCIATED:
3048 r->flags |= WPA_SCAN_ASSOCIATED;
3049 break;
3050 default:
3051 break;
3052 }
3053 }
3054
3055 /*
3056 * cfg80211 maintains separate BSS table entries for APs if the same
3057 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3058 * not use frequency as a separate key in the BSS table, so filter out
3059 * duplicated entries. Prefer associated BSS entry in such a case in
3060 * order to get the correct frequency into the BSS table.
3061 */
3062 for (i = 0; i < res->num; i++) {
3063 const u8 *s1, *s2;
3064 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3065 continue;
3066
3067 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3068 res->res[i]->ie_len, WLAN_EID_SSID);
3069 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3070 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3071 os_memcmp(s1, s2, 2 + s1[1]) != 0)
3072 continue;
3073
3074 /* Same BSSID,SSID was already included in scan results */
3075 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3076 "for " MACSTR, MAC2STR(r->bssid));
3077
3078 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3079 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3080 os_free(res->res[i]);
3081 res->res[i] = r;
3082 } else
3083 os_free(r);
3084 return NL_SKIP;
3085 }
3086
3087 tmp = os_realloc(res->res,
3088 (res->num + 1) * sizeof(struct wpa_scan_res *));
3089 if (tmp == NULL) {
3090 os_free(r);
3091 return NL_SKIP;
3092 }
3093 tmp[res->num++] = r;
3094 res->res = tmp;
3095
3096 return NL_SKIP;
3097 }
3098
3099
3100 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3101 const u8 *addr)
3102 {
3103 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3104 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3105 "mismatch (" MACSTR ")", MAC2STR(addr));
3106 wpa_driver_nl80211_mlme(drv, addr,
3107 NL80211_CMD_DEAUTHENTICATE,
3108 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3109 }
3110 }
3111
3112
3113 static void wpa_driver_nl80211_check_bss_status(
3114 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3115 {
3116 size_t i;
3117
3118 for (i = 0; i < res->num; i++) {
3119 struct wpa_scan_res *r = res->res[i];
3120 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3121 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3122 "indicates BSS status with " MACSTR
3123 " as authenticated",
3124 MAC2STR(r->bssid));
3125 if (is_sta_interface(drv->nlmode) &&
3126 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3127 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3128 0) {
3129 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3130 " in local state (auth=" MACSTR
3131 " assoc=" MACSTR ")",
3132 MAC2STR(drv->auth_bssid),
3133 MAC2STR(drv->bssid));
3134 clear_state_mismatch(drv, r->bssid);
3135 }
3136 }
3137
3138 if (r->flags & WPA_SCAN_ASSOCIATED) {
3139 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3140 "indicate BSS status with " MACSTR
3141 " as associated",
3142 MAC2STR(r->bssid));
3143 if (is_sta_interface(drv->nlmode) &&
3144 !drv->associated) {
3145 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3146 "(not associated) does not match "
3147 "with BSS state");
3148 clear_state_mismatch(drv, r->bssid);
3149 } else if (is_sta_interface(drv->nlmode) &&
3150 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3151 0) {
3152 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3153 "(associated with " MACSTR ") does "
3154 "not match with BSS state",
3155 MAC2STR(drv->bssid));
3156 clear_state_mismatch(drv, r->bssid);
3157 clear_state_mismatch(drv, drv->bssid);
3158 }
3159 }
3160 }
3161 }
3162
3163
3164 static struct wpa_scan_results *
3165 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3166 {
3167 struct nl_msg *msg;
3168 struct wpa_scan_results *res;
3169 int ret;
3170 struct nl80211_bss_info_arg arg;
3171
3172 res = os_zalloc(sizeof(*res));
3173 if (res == NULL)
3174 return NULL;
3175 msg = nlmsg_alloc();
3176 if (!msg)
3177 goto nla_put_failure;
3178
3179 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3180 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3181
3182 arg.drv = drv;
3183 arg.res = res;
3184 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3185 msg = NULL;
3186 if (ret == 0) {
3187 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3188 "BSSes)", (unsigned long) res->num);
3189 nl80211_get_noise_for_scan_results(drv, res);
3190 return res;
3191 }
3192 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3193 "(%s)", ret, strerror(-ret));
3194 nla_put_failure:
3195 nlmsg_free(msg);
3196 wpa_scan_results_free(res);
3197 return NULL;
3198 }
3199
3200
3201 /**
3202 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3203 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3204 * Returns: Scan results on success, -1 on failure
3205 */
3206 static struct wpa_scan_results *
3207 wpa_driver_nl80211_get_scan_results(void *priv)
3208 {
3209 struct i802_bss *bss = priv;
3210 struct wpa_driver_nl80211_data *drv = bss->drv;
3211 struct wpa_scan_results *res;
3212
3213 res = nl80211_get_scan_results(drv);
3214 if (res)
3215 wpa_driver_nl80211_check_bss_status(drv, res);
3216 return res;
3217 }
3218
3219
3220 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3221 {
3222 struct wpa_scan_results *res;
3223 size_t i;
3224
3225 res = nl80211_get_scan_results(drv);
3226 if (res == NULL) {
3227 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3228 return;
3229 }
3230
3231 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3232 for (i = 0; i < res->num; i++) {
3233 struct wpa_scan_res *r = res->res[i];
3234 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3235 (int) i, (int) res->num, MAC2STR(r->bssid),
3236 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3237 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3238 }
3239
3240 wpa_scan_results_free(res);
3241 }
3242
3243
3244 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
3245 enum wpa_alg alg, const u8 *addr,
3246 int key_idx, int set_tx,
3247 const u8 *seq, size_t seq_len,
3248 const u8 *key, size_t key_len)
3249 {
3250 struct i802_bss *bss = priv;
3251 struct wpa_driver_nl80211_data *drv = bss->drv;
3252 int ifindex = if_nametoindex(ifname);
3253 struct nl_msg *msg;
3254 int ret;
3255
3256 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
3257 "set_tx=%d seq_len=%lu key_len=%lu",
3258 __func__, ifindex, alg, addr, key_idx, set_tx,
3259 (unsigned long) seq_len, (unsigned long) key_len);
3260 #ifdef CONFIG_TDLS
3261 if (key_idx == -1)
3262 key_idx = 0;
3263 #endif /* CONFIG_TDLS */
3264
3265 msg = nlmsg_alloc();
3266 if (!msg)
3267 return -ENOMEM;
3268
3269 if (alg == WPA_ALG_NONE) {
3270 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3271 } else {
3272 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3273 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3274 switch (alg) {
3275 case WPA_ALG_WEP:
3276 if (key_len == 5)
3277 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3278 WLAN_CIPHER_SUITE_WEP40);
3279 else
3280 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3281 WLAN_CIPHER_SUITE_WEP104);
3282 break;
3283 case WPA_ALG_TKIP:
3284 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3285 WLAN_CIPHER_SUITE_TKIP);
3286 break;
3287 case WPA_ALG_CCMP:
3288 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3289 WLAN_CIPHER_SUITE_CCMP);
3290 break;
3291 case WPA_ALG_IGTK:
3292 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3293 WLAN_CIPHER_SUITE_AES_CMAC);
3294 break;
3295 default:
3296 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3297 "algorithm %d", __func__, alg);
3298 nlmsg_free(msg);
3299 return -1;
3300 }
3301 }
3302
3303 if (seq && seq_len)
3304 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3305
3306 if (addr && !is_broadcast_ether_addr(addr)) {
3307 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
3308 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3309
3310 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3311 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
3312 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3313 NL80211_KEYTYPE_GROUP);
3314 }
3315 } else if (addr && is_broadcast_ether_addr(addr)) {
3316 struct nl_msg *types;
3317 int err;
3318 wpa_printf(MSG_DEBUG, " broadcast key");
3319 types = nlmsg_alloc();
3320 if (!types)
3321 goto nla_put_failure;
3322 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3323 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3324 types);
3325 nlmsg_free(types);
3326 if (err)
3327 goto nla_put_failure;
3328 }
3329 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3330 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3331
3332 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3333 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3334 ret = 0;
3335 if (ret)
3336 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3337 ret, strerror(-ret));
3338
3339 /*
3340 * If we failed or don't need to set the default TX key (below),
3341 * we're done here.
3342 */
3343 if (ret || !set_tx || alg == WPA_ALG_NONE)
3344 return ret;
3345 if (is_ap_interface(drv->nlmode) && addr &&
3346 !is_broadcast_ether_addr(addr))
3347 return ret;
3348
3349 msg = nlmsg_alloc();
3350 if (!msg)
3351 return -ENOMEM;
3352
3353 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3354 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3355 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3356 if (alg == WPA_ALG_IGTK)
3357 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3358 else
3359 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3360 if (addr && is_broadcast_ether_addr(addr)) {
3361 struct nl_msg *types;
3362 int err;
3363 types = nlmsg_alloc();
3364 if (!types)
3365 goto nla_put_failure;
3366 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3367 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3368 types);
3369 nlmsg_free(types);
3370 if (err)
3371 goto nla_put_failure;
3372 } else if (addr) {
3373 struct nl_msg *types;
3374 int err;
3375 types = nlmsg_alloc();
3376 if (!types)
3377 goto nla_put_failure;
3378 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3379 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3380 types);
3381 nlmsg_free(types);
3382 if (err)
3383 goto nla_put_failure;
3384 }
3385
3386 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3387 if (ret == -ENOENT)
3388 ret = 0;
3389 if (ret)
3390 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3391 "err=%d %s)", ret, strerror(-ret));
3392 return ret;
3393
3394 nla_put_failure:
3395 return -ENOBUFS;
3396 }
3397
3398
3399 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3400 int key_idx, int defkey,
3401 const u8 *seq, size_t seq_len,
3402 const u8 *key, size_t key_len)
3403 {
3404 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3405 if (!key_attr)
3406 return -1;
3407
3408 if (defkey && alg == WPA_ALG_IGTK)
3409 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3410 else if (defkey)
3411 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3412
3413 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3414
3415 switch (alg) {
3416 case WPA_ALG_WEP:
3417 if (key_len == 5)
3418 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3419 WLAN_CIPHER_SUITE_WEP40);
3420 else
3421 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3422 WLAN_CIPHER_SUITE_WEP104);
3423 break;
3424 case WPA_ALG_TKIP:
3425 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
3426 break;
3427 case WPA_ALG_CCMP:
3428 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
3429 break;
3430 case WPA_ALG_IGTK:
3431 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3432 WLAN_CIPHER_SUITE_AES_CMAC);
3433 break;
3434 default:
3435 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3436 "algorithm %d", __func__, alg);
3437 return -1;
3438 }
3439
3440 if (seq && seq_len)
3441 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3442
3443 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3444
3445 nla_nest_end(msg, key_attr);
3446
3447 return 0;
3448 nla_put_failure:
3449 return -1;
3450 }
3451
3452
3453 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3454 struct nl_msg *msg)
3455 {
3456 int i, privacy = 0;
3457 struct nlattr *nl_keys, *nl_key;
3458
3459 for (i = 0; i < 4; i++) {
3460 if (!params->wep_key[i])
3461 continue;
3462 privacy = 1;
3463 break;
3464 }
3465 if (params->wps == WPS_MODE_PRIVACY)
3466 privacy = 1;
3467 if (params->pairwise_suite &&
3468 params->pairwise_suite != WPA_CIPHER_NONE)
3469 privacy = 1;
3470
3471 if (!privacy)
3472 return 0;
3473
3474 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3475
3476 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3477 if (!nl_keys)
3478 goto nla_put_failure;
3479
3480 for (i = 0; i < 4; i++) {
3481 if (!params->wep_key[i])
3482 continue;
3483
3484 nl_key = nla_nest_start(msg, i);
3485 if (!nl_key)
3486 goto nla_put_failure;
3487
3488 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3489 params->wep_key[i]);
3490 if (params->wep_key_len[i] == 5)
3491 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3492 WLAN_CIPHER_SUITE_WEP40);
3493 else
3494 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3495 WLAN_CIPHER_SUITE_WEP104);
3496
3497 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3498
3499 if (i == params->wep_tx_keyidx)
3500 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3501
3502 nla_nest_end(msg, nl_key);
3503 }
3504 nla_nest_end(msg, nl_keys);
3505
3506 return 0;
3507
3508 nla_put_failure:
3509 return -ENOBUFS;
3510 }
3511
3512
3513 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3514 const u8 *addr, int cmd, u16 reason_code,
3515 int local_state_change)
3516 {
3517 int ret = -1;
3518 struct nl_msg *msg;
3519
3520 msg = nlmsg_alloc();
3521 if (!msg)
3522 return -1;
3523
3524 nl80211_cmd(drv, msg, 0, cmd);
3525
3526 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3527 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3528 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3529 if (local_state_change)
3530 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3531
3532 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3533 msg = NULL;
3534 if (ret) {
3535 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3536 "(%s)", ret, strerror(-ret));
3537 goto nla_put_failure;
3538 }
3539 ret = 0;
3540
3541 nla_put_failure:
3542 nlmsg_free(msg);
3543 return ret;
3544 }
3545
3546
3547 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3548 const u8 *addr, int reason_code)
3549 {
3550 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3551 __func__, MAC2STR(addr), reason_code);
3552 drv->associated = 0;
3553 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
3554 reason_code, 0);
3555 }
3556
3557
3558 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
3559 int reason_code)
3560 {
3561 struct i802_bss *bss = priv;
3562 struct wpa_driver_nl80211_data *drv = bss->drv;
3563 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3564 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3565 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3566 __func__, MAC2STR(addr), reason_code);
3567 drv->associated = 0;
3568 if (drv->nlmode == NL80211_IFTYPE_ADHOC)
3569 return nl80211_leave_ibss(drv);
3570 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3571 reason_code, 0);
3572 }
3573
3574
3575 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
3576 int reason_code)
3577 {
3578 struct i802_bss *bss = priv;
3579 struct wpa_driver_nl80211_data *drv = bss->drv;
3580 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3581 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3582 wpa_printf(MSG_DEBUG, "%s", __func__);
3583 drv->associated = 0;
3584 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
3585 reason_code, 0);
3586 }
3587
3588
3589 static int wpa_driver_nl80211_authenticate(
3590 void *priv, struct wpa_driver_auth_params *params)
3591 {
3592 struct i802_bss *bss = priv;
3593 struct wpa_driver_nl80211_data *drv = bss->drv;
3594 int ret = -1, i;
3595 struct nl_msg *msg;
3596 enum nl80211_auth_type type;
3597 enum nl80211_iftype nlmode;
3598 int count = 0;
3599
3600 drv->associated = 0;
3601 os_memset(drv->auth_bssid, 0, ETH_ALEN);
3602 /* FIX: IBSS mode */
3603 nlmode = params->p2p ?
3604 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3605 if (drv->nlmode != nlmode &&
3606 wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
3607 return -1;
3608
3609 retry:
3610 msg = nlmsg_alloc();
3611 if (!msg)
3612 return -1;
3613
3614 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3615 drv->ifindex);
3616
3617 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3618
3619 for (i = 0; i < 4; i++) {
3620 if (!params->wep_key[i])
3621 continue;
3622 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
3623 NULL, i,
3624 i == params->wep_tx_keyidx, NULL, 0,
3625 params->wep_key[i],
3626 params->wep_key_len[i]);
3627 if (params->wep_tx_keyidx != i)
3628 continue;
3629 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3630 params->wep_key[i], params->wep_key_len[i])) {
3631 nlmsg_free(msg);
3632 return -1;
3633 }
3634 }
3635
3636 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3637 if (params->bssid) {
3638 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3639 MAC2STR(params->bssid));
3640 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3641 }
3642 if (params->freq) {
3643 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3644 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3645 }
3646 if (params->ssid) {
3647 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3648 params->ssid, params->ssid_len);
3649 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3650 params->ssid);
3651 }
3652 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
3653 if (params->ie)
3654 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3655 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3656 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3657 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3658 type = NL80211_AUTHTYPE_SHARED_KEY;
3659 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3660 type = NL80211_AUTHTYPE_NETWORK_EAP;
3661 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3662 type = NL80211_AUTHTYPE_FT;
3663 else
3664 goto nla_put_failure;
3665 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3666 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3667 if (params->local_state_change) {
3668 wpa_printf(MSG_DEBUG, " * Local state change only");
3669 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3670 }
3671
3672 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3673 msg = NULL;
3674 if (ret) {
3675 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3676 "(%s)", ret, strerror(-ret));
3677 count++;
3678 if (ret == -EALREADY && count == 1 && params->bssid &&
3679 !params->local_state_change) {
3680 /*
3681 * mac80211 does not currently accept new
3682 * authentication if we are already authenticated. As a
3683 * workaround, force deauthentication and try again.
3684 */
3685 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3686 "after forced deauthentication");
3687 wpa_driver_nl80211_deauthenticate(
3688 bss, params->bssid,
3689 WLAN_REASON_PREV_AUTH_NOT_VALID);
3690 nlmsg_free(msg);
3691 goto retry;
3692 }
3693 goto nla_put_failure;
3694 }
3695 ret = 0;
3696 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3697 "successfully");
3698
3699 nla_put_failure:
3700 nlmsg_free(msg);
3701 return ret;
3702 }
3703
3704
3705 struct phy_info_arg {
3706 u16 *num_modes;
3707 struct hostapd_hw_modes *modes;
3708 };
3709
3710 static int phy_info_handler(struct nl_msg *msg, void *arg)
3711 {
3712 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3713 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3714 struct phy_info_arg *phy_info = arg;
3715
3716 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
3717
3718 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
3719 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3720 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
3721 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
3722 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
3723 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
3724 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
3725 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
3726 };
3727
3728 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
3729 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
3730 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
3731 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
3732 };
3733
3734 struct nlattr *nl_band;
3735 struct nlattr *nl_freq;
3736 struct nlattr *nl_rate;
3737 int rem_band, rem_freq, rem_rate;
3738 struct hostapd_hw_modes *mode;
3739 int idx, mode_is_set;
3740
3741 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3742 genlmsg_attrlen(gnlh, 0), NULL);
3743
3744 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
3745 return NL_SKIP;
3746
3747 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
3748 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
3749 if (!mode)
3750 return NL_SKIP;
3751 phy_info->modes = mode;
3752
3753 mode_is_set = 0;
3754
3755 mode = &phy_info->modes[*(phy_info->num_modes)];
3756 memset(mode, 0, sizeof(*mode));
3757 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
3758 *(phy_info->num_modes) += 1;
3759
3760 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
3761 nla_len(nl_band), NULL);
3762
3763 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
3764 mode->ht_capab = nla_get_u16(
3765 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
3766 }
3767
3768 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
3769 mode->a_mpdu_params |= nla_get_u8(
3770 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
3771 0x03;
3772 }
3773
3774 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
3775 mode->a_mpdu_params |= nla_get_u8(
3776 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
3777 2;
3778 }
3779
3780 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
3781 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
3782 u8 *mcs;
3783 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
3784 os_memcpy(mode->mcs_set, mcs, 16);
3785 }
3786
3787 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3788 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3789 nla_len(nl_freq), freq_policy);
3790 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3791 continue;
3792 mode->num_channels++;
3793 }
3794
3795 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
3796 if (!mode->channels)
3797 return NL_SKIP;
3798
3799 idx = 0;
3800
3801 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3802 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3803 nla_len(nl_freq), freq_policy);
3804 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3805 continue;
3806
3807 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
3808 mode->channels[idx].flag = 0;
3809
3810 if (!mode_is_set) {
3811 /* crude heuristic */
3812 if (mode->channels[idx].freq < 4000)
3813 mode->mode = HOSTAPD_MODE_IEEE80211B;
3814 else
3815 mode->mode = HOSTAPD_MODE_IEEE80211A;
3816 mode_is_set = 1;
3817 }
3818
3819 /* crude heuristic */
3820 if (mode->channels[idx].freq < 4000)
3821 if (mode->channels[idx].freq == 2484)
3822 mode->channels[idx].chan = 14;
3823 else
3824 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
3825 else
3826 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
3827
3828 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3829 mode->channels[idx].flag |=
3830 HOSTAPD_CHAN_DISABLED;
3831 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
3832 mode->channels[idx].flag |=
3833 HOSTAPD_CHAN_PASSIVE_SCAN;
3834 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
3835 mode->channels[idx].flag |=
3836 HOSTAPD_CHAN_NO_IBSS;
3837 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
3838 mode->channels[idx].flag |=
3839 HOSTAPD_CHAN_RADAR;
3840
3841 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
3842 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3843 mode->channels[idx].max_tx_power =
3844 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
3845
3846 idx++;
3847 }
3848
3849 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3850 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3851 nla_len(nl_rate), rate_policy);
3852 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3853 continue;
3854 mode->num_rates++;
3855 }
3856
3857 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
3858 if (!mode->rates)
3859 return NL_SKIP;
3860
3861 idx = 0;
3862
3863 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3864 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3865 nla_len(nl_rate), rate_policy);
3866 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3867 continue;
3868 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3869
3870 /* crude heuristic */
3871 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3872 mode->rates[idx] > 200)
3873 mode->mode = HOSTAPD_MODE_IEEE80211G;
3874
3875 idx++;
3876 }
3877 }
3878
3879 return NL_SKIP;
3880 }
3881
3882 static struct hostapd_hw_modes *
3883 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3884 {
3885 u16 m;
3886 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3887 int i, mode11g_idx = -1;
3888
3889 /* If only 802.11g mode is included, use it to construct matching
3890 * 802.11b mode data. */
3891
3892 for (m = 0; m < *num_modes; m++) {
3893 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3894 return modes; /* 802.11b already included */
3895 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3896 mode11g_idx = m;
3897 }
3898
3899 if (mode11g_idx < 0)
3900 return modes; /* 2.4 GHz band not supported at all */
3901
3902 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3903 if (nmodes == NULL)
3904 return modes; /* Could not add 802.11b mode */
3905
3906 mode = &nmodes[*num_modes];
3907 os_memset(mode, 0, sizeof(*mode));
3908 (*num_modes)++;
3909 modes = nmodes;
3910
3911 mode->mode = HOSTAPD_MODE_IEEE80211B;
3912
3913 mode11g = &modes[mode11g_idx];
3914 mode->num_channels = mode11g->num_channels;
3915 mode->channels = os_malloc(mode11g->num_channels *
3916 sizeof(struct hostapd_channel_data));
3917 if (mode->channels == NULL) {
3918 (*num_modes)--;
3919 return modes; /* Could not add 802.11b mode */
3920 }
3921 os_memcpy(mode->channels, mode11g->channels,
3922 mode11g->num_channels * sizeof(struct hostapd_channel_data));
3923
3924 mode->num_rates = 0;
3925 mode->rates = os_malloc(4 * sizeof(int));
3926 if (mode->rates == NULL) {
3927 os_free(mode->channels);
3928 (*num_modes)--;
3929 return modes; /* Could not add 802.11b mode */
3930 }
3931
3932 for (i = 0; i < mode11g->num_rates; i++) {
3933 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3934 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3935 continue;
3936 mode->rates[mode->num_rates] = mode11g->rates[i];
3937 mode->num_rates++;
3938 if (mode->num_rates == 4)
3939 break;
3940 }
3941
3942 if (mode->num_rates == 0) {
3943 os_free(mode->channels);
3944 os_free(mode->rates);
3945 (*num_modes)--;
3946 return modes; /* No 802.11b rates */
3947 }
3948
3949 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3950 "information");
3951
3952 return modes;
3953 }
3954
3955
3956 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
3957 int end)
3958 {
3959 int c;
3960
3961 for (c = 0; c < mode->num_channels; c++) {
3962 struct hostapd_channel_data *chan = &mode->channels[c];
3963 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
3964 chan->flag |= HOSTAPD_CHAN_HT40;
3965 }
3966 }
3967
3968
3969 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
3970 int end)
3971 {
3972 int c;
3973
3974 for (c = 0; c < mode->num_channels; c++) {
3975 struct hostapd_channel_data *chan = &mode->channels[c];
3976 if (!(chan->flag & HOSTAPD_CHAN_HT40))
3977 continue;
3978 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
3979 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
3980 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
3981 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
3982 }
3983 }
3984
3985
3986 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
3987 struct phy_info_arg *results)
3988 {
3989 u32 start, end, max_bw;
3990 u16 m;
3991
3992 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
3993 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
3994 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
3995 return;
3996
3997 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
3998 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
3999 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4000
4001 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
4002 start, end, max_bw);
4003 if (max_bw < 40)
4004 return;
4005
4006 for (m = 0; m < *results->num_modes; m++) {
4007 if (!(results->modes[m].ht_capab &
4008 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4009 continue;
4010 nl80211_set_ht40_mode(&results->modes[m], start, end);
4011 }
4012 }
4013
4014
4015 static void nl80211_reg_rule_sec(struct nlattr *tb[],
4016 struct phy_info_arg *results)
4017 {
4018 u32 start, end, max_bw;
4019 u16 m;
4020
4021 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4022 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4023 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4024 return;
4025
4026 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4027 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4028 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4029
4030 if (max_bw < 20)
4031 return;
4032
4033 for (m = 0; m < *results->num_modes; m++) {
4034 if (!(results->modes[m].ht_capab &
4035 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4036 continue;
4037 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
4038 }
4039 }
4040
4041
4042 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
4043 {
4044 struct phy_info_arg *results = arg;
4045 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4046 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4047 struct nlattr *nl_rule;
4048 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
4049 int rem_rule;
4050 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4051 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4052 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4053 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4054 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4055 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4056 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4057 };
4058
4059 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4060 genlmsg_attrlen(gnlh, 0), NULL);
4061 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
4062 !tb_msg[NL80211_ATTR_REG_RULES]) {
4063 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
4064 "available");
4065 return NL_SKIP;
4066 }
4067
4068 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
4069 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
4070
4071 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4072 {
4073 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4074 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4075 nl80211_reg_rule_ht40(tb_rule, results);
4076 }
4077
4078 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4079 {
4080 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4081 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4082 nl80211_reg_rule_sec(tb_rule, results);
4083 }
4084
4085 return NL_SKIP;
4086 }
4087
4088
4089 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
4090 struct phy_info_arg *results)
4091 {
4092 struct nl_msg *msg;
4093
4094 msg = nlmsg_alloc();
4095 if (!msg)
4096 return -ENOMEM;
4097
4098 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
4099 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
4100 }
4101
4102
4103 static struct hostapd_hw_modes *
4104 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
4105 {
4106 struct i802_bss *bss = priv;
4107 struct wpa_driver_nl80211_data *drv = bss->drv;
4108 struct nl_msg *msg;
4109 struct phy_info_arg result = {
4110 .num_modes = num_modes,
4111 .modes = NULL,
4112 };
4113
4114 *num_modes = 0;
4115 *flags = 0;
4116
4117 msg = nlmsg_alloc();
4118 if (!msg)
4119 return NULL;
4120
4121 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
4122
4123 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4124
4125 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
4126 nl80211_set_ht40_flags(drv, &result);
4127 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
4128 }
4129 nla_put_failure:
4130 return NULL;
4131 }
4132
4133
4134 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
4135 const void *data, size_t len,
4136 int encrypt)
4137 {
4138 __u8 rtap_hdr[] = {
4139 0x00, 0x00, /* radiotap version */
4140 0x0e, 0x00, /* radiotap length */
4141 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
4142 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
4143 0x00, /* padding */
4144 0x00, 0x00, /* RX and TX flags to indicate that */
4145 0x00, 0x00, /* this is the injected frame directly */
4146 };
4147 struct iovec iov[2] = {
4148 {
4149 .iov_base = &rtap_hdr,
4150 .iov_len = sizeof(rtap_hdr),
4151 },
4152 {
4153 .iov_base = (void *) data,
4154 .iov_len = len,
4155 }
4156 };
4157 struct msghdr msg = {
4158 .msg_name = NULL,
4159 .msg_namelen = 0,
4160 .msg_iov = iov,
4161 .msg_iovlen = 2,
4162 .msg_control = NULL,
4163 .msg_controllen = 0,
4164 .msg_flags = 0,
4165 };
4166 int res;
4167
4168 if (encrypt)
4169 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
4170
4171 if (drv->monitor_sock < 0) {
4172 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
4173 "for %s", __func__);
4174 return -1;
4175 }
4176
4177 res = sendmsg(drv->monitor_sock, &msg, 0);
4178 if (res < 0) {
4179 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
4180 return -1;
4181 }
4182 return 0;
4183 }
4184
4185
4186 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
4187 size_t data_len)
4188 {
4189 struct i802_bss *bss = priv;
4190 struct wpa_driver_nl80211_data *drv = bss->drv;
4191 struct ieee80211_mgmt *mgmt;
4192 int encrypt = 1;
4193 u16 fc;
4194
4195 mgmt = (struct ieee80211_mgmt *) data;
4196 fc = le_to_host16(mgmt->frame_control);
4197
4198 if (is_sta_interface(drv->nlmode) &&
4199 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4200 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
4201 /*
4202 * The use of last_mgmt_freq is a bit of a hack,
4203 * but it works due to the single-threaded nature
4204 * of wpa_supplicant.
4205 */
4206 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq, 0,
4207 data, data_len, NULL, 1);
4208 }
4209
4210 if (drv->no_monitor_iface_capab && is_ap_interface(drv->nlmode)) {
4211 return nl80211_send_frame_cmd(drv, drv->ap_oper_freq, 0,
4212 data, data_len, NULL, 0);
4213 }
4214
4215 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4216 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
4217 /*
4218 * Only one of the authentication frame types is encrypted.
4219 * In order for static WEP encryption to work properly (i.e.,
4220 * to not encrypt the frame), we need to tell mac80211 about
4221 * the frames that must not be encrypted.
4222 */
4223 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
4224 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
4225 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
4226 encrypt = 0;
4227 }
4228
4229 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
4230 }
4231
4232
4233 static int nl80211_set_ap_isolate(struct i802_bss *bss, int enabled)
4234 {
4235 struct wpa_driver_nl80211_data *drv = bss->drv;
4236 struct nl_msg *msg;
4237
4238 msg = nlmsg_alloc();
4239 if (!msg)
4240 return -ENOMEM;
4241
4242 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4243
4244 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4245 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, enabled);
4246
4247 return send_and_recv_msgs(drv, msg, NULL, NULL);
4248 nla_put_failure:
4249 return -ENOBUFS;
4250 }
4251
4252
4253 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
4254 int slot, int ht_opmode)
4255 {
4256 struct wpa_driver_nl80211_data *drv = bss->drv;
4257 struct nl_msg *msg;
4258
4259 msg = nlmsg_alloc();
4260 if (!msg)
4261 return -ENOMEM;
4262
4263 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4264
4265 if (cts >= 0)
4266 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4267 if (preamble >= 0)
4268 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4269 if (slot >= 0)
4270 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4271 if (ht_opmode >= 0)
4272 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
4273 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4274
4275 return send_and_recv_msgs(drv, msg, NULL, NULL);
4276 nla_put_failure:
4277 return -ENOBUFS;
4278 }
4279
4280
4281 static int wpa_driver_nl80211_set_ap(void *priv,
4282 struct wpa_driver_ap_params *params)
4283 {
4284 struct i802_bss *bss = priv;
4285 struct wpa_driver_nl80211_data *drv = bss->drv;
4286 struct nl_msg *msg;
4287 u8 cmd = NL80211_CMD_NEW_BEACON;
4288 int ret;
4289 int beacon_set;
4290 int ifindex = if_nametoindex(bss->ifname);
4291 int num_suites;
4292 u32 suites[10];
4293 u32 ver;
4294
4295 beacon_set = bss->beacon_set;
4296
4297 msg = nlmsg_alloc();
4298 if (!msg)
4299 return -ENOMEM;
4300
4301 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4302 beacon_set);
4303 if (beacon_set)
4304 cmd = NL80211_CMD_SET_BEACON;
4305
4306 nl80211_cmd(drv, msg, 0, cmd);
4307 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4308 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4309 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4310 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4311 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4312 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4313 params->ssid);
4314 switch (params->hide_ssid) {
4315 case NO_SSID_HIDING:
4316 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4317 NL80211_HIDDEN_SSID_NOT_IN_USE);
4318 break;
4319 case HIDDEN_SSID_ZERO_LEN:
4320 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4321 NL80211_HIDDEN_SSID_ZERO_LEN);
4322 break;
4323 case HIDDEN_SSID_ZERO_CONTENTS:
4324 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4325 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4326 break;
4327 }
4328 if (params->privacy)
4329 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4330 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4331 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4332 /* Leave out the attribute */
4333 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4334 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4335 NL80211_AUTHTYPE_SHARED_KEY);
4336 else
4337 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4338 NL80211_AUTHTYPE_OPEN_SYSTEM);
4339
4340 ver = 0;
4341 if (params->wpa_version & WPA_PROTO_WPA)
4342 ver |= NL80211_WPA_VERSION_1;
4343 if (params->wpa_version & WPA_PROTO_RSN)
4344 ver |= NL80211_WPA_VERSION_2;
4345 if (ver)
4346 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4347
4348 num_suites = 0;
4349 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4350 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4351 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4352 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4353 if (num_suites) {
4354 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4355 num_suites * sizeof(u32), suites);
4356 }
4357
4358 num_suites = 0;
4359 if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
4360 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
4361 if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
4362 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
4363 if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
4364 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
4365 if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
4366 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
4367 if (num_suites) {
4368 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4369 num_suites * sizeof(u32), suites);
4370 }
4371
4372 switch (params->group_cipher) {
4373 case WPA_CIPHER_CCMP:
4374 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4375 WLAN_CIPHER_SUITE_CCMP);
4376 break;
4377 case WPA_CIPHER_TKIP:
4378 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4379 WLAN_CIPHER_SUITE_TKIP);
4380 break;
4381 case WPA_CIPHER_WEP104:
4382 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4383 WLAN_CIPHER_SUITE_WEP104);
4384 break;
4385 case WPA_CIPHER_WEP40:
4386 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4387 WLAN_CIPHER_SUITE_WEP40);
4388 break;
4389 }
4390
4391 if (params->beacon_ies) {
4392 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4393 wpabuf_head(params->beacon_ies));
4394 }
4395 if (params->proberesp_ies) {
4396 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4397 wpabuf_len(params->proberesp_ies),
4398 wpabuf_head(params->proberesp_ies));
4399 }
4400 if (params->assocresp_ies) {
4401 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4402 wpabuf_len(params->assocresp_ies),
4403 wpabuf_head(params->assocresp_ies));
4404 }
4405
4406 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4407 if (ret) {
4408 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4409 ret, strerror(-ret));
4410 } else {
4411 bss->beacon_set = 1;
4412 ret = nl80211_set_ap_isolate(bss, params->isolate);
4413 if (!params->isolate && ret) {
4414 wpa_printf(MSG_DEBUG, "nl80211: Ignore AP isolation "
4415 "configuration error since isolation is "
4416 "not used");
4417 ret = 0;
4418 }
4419
4420 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4421 params->short_slot_time, params->ht_opmode);
4422 }
4423 return ret;
4424 nla_put_failure:
4425 return -ENOBUFS;
4426 }
4427
4428
4429 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
4430 int freq, int ht_enabled,
4431 int sec_channel_offset)
4432 {
4433 struct nl_msg *msg;
4434 int ret;
4435
4436 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
4437 "sec_channel_offset=%d)",
4438 freq, ht_enabled, sec_channel_offset);
4439 msg = nlmsg_alloc();
4440 if (!msg)
4441 return -1;
4442
4443 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
4444
4445 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4446 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4447 if (ht_enabled) {
4448 switch (sec_channel_offset) {
4449 case -1:
4450 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4451 NL80211_CHAN_HT40MINUS);
4452 break;
4453 case 1:
4454 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4455 NL80211_CHAN_HT40PLUS);
4456 break;
4457 default:
4458 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4459 NL80211_CHAN_HT20);
4460 break;
4461 }
4462 }
4463
4464 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4465 if (ret == 0)
4466 return 0;
4467 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4468 "%d (%s)", freq, ret, strerror(-ret));
4469 nla_put_failure:
4470 return -1;
4471 }
4472
4473
4474 static u32 sta_flags_nl80211(int flags)
4475 {
4476 u32 f = 0;
4477
4478 if (flags & WPA_STA_AUTHORIZED)
4479 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4480 if (flags & WPA_STA_WMM)
4481 f |= BIT(NL80211_STA_FLAG_WME);
4482 if (flags & WPA_STA_SHORT_PREAMBLE)
4483 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4484 if (flags & WPA_STA_MFP)
4485 f |= BIT(NL80211_STA_FLAG_MFP);
4486 if (flags & WPA_STA_TDLS_PEER)
4487 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4488
4489 return f;
4490 }
4491
4492
4493 static int wpa_driver_nl80211_sta_add(void *priv,
4494 struct hostapd_sta_add_params *params)
4495 {
4496 struct i802_bss *bss = priv;
4497 struct wpa_driver_nl80211_data *drv = bss->drv;
4498 struct nl_msg *msg;
4499 struct nl80211_sta_flag_update upd;
4500 int ret = -ENOBUFS;
4501
4502 if ((params->flags & WPA_STA_TDLS_PEER) &&
4503 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4504 return -EOPNOTSUPP;
4505
4506 msg = nlmsg_alloc();
4507 if (!msg)
4508 return -ENOMEM;
4509
4510 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4511 NL80211_CMD_NEW_STATION);
4512
4513 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4514 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4515 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
4516 params->supp_rates);
4517 if (!params->set) {
4518 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4519 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4520 params->listen_interval);
4521 }
4522 if (params->ht_capabilities) {
4523 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4524 sizeof(*params->ht_capabilities),
4525 params->ht_capabilities);
4526 }
4527
4528 os_memset(&upd, 0, sizeof(upd));
4529 upd.mask = sta_flags_nl80211(params->flags);
4530 upd.set = upd.mask;
4531 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4532
4533 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4534 if (ret)
4535 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4536 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4537 strerror(-ret));
4538 if (ret == -EEXIST)
4539 ret = 0;
4540 nla_put_failure:
4541 return ret;
4542 }
4543
4544
4545 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
4546 {
4547 struct i802_bss *bss = priv;
4548 struct wpa_driver_nl80211_data *drv = bss->drv;
4549 struct nl_msg *msg;
4550 int ret;
4551
4552 msg = nlmsg_alloc();
4553 if (!msg)
4554 return -ENOMEM;
4555
4556 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4557
4558 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4559 if_nametoindex(bss->ifname));
4560 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4561
4562 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4563 if (ret == -ENOENT)
4564 return 0;
4565 return ret;
4566 nla_put_failure:
4567 return -ENOBUFS;
4568 }
4569
4570
4571 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
4572 int ifidx)
4573 {
4574 struct nl_msg *msg;
4575
4576 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4577
4578 /* stop listening for EAPOL on this interface */
4579 del_ifidx(drv, ifidx);
4580
4581 msg = nlmsg_alloc();
4582 if (!msg)
4583 goto nla_put_failure;
4584
4585 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4587
4588 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4589 return;
4590 nla_put_failure:
4591 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4592 }
4593
4594
4595 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4596 {
4597 switch (mode) {
4598 case NL80211_IFTYPE_ADHOC:
4599 return "ADHOC";
4600 case NL80211_IFTYPE_STATION:
4601 return "STATION";
4602 case NL80211_IFTYPE_AP:
4603 return "AP";
4604 case NL80211_IFTYPE_MONITOR:
4605 return "MONITOR";
4606 case NL80211_IFTYPE_P2P_CLIENT:
4607 return "P2P_CLIENT";
4608 case NL80211_IFTYPE_P2P_GO:
4609 return "P2P_GO";
4610 default:
4611 return "unknown";
4612 }
4613 }
4614
4615
4616 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4617 const char *ifname,
4618 enum nl80211_iftype iftype,
4619 const u8 *addr, int wds)
4620 {
4621 struct nl_msg *msg, *flags = NULL;
4622 int ifidx;
4623 int ret = -ENOBUFS;
4624
4625 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4626 iftype, nl80211_iftype_str(iftype));
4627
4628 msg = nlmsg_alloc();
4629 if (!msg)
4630 return -1;
4631
4632 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4633 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4634 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4635 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4636
4637 if (iftype == NL80211_IFTYPE_MONITOR) {
4638 int err;
4639
4640 flags = nlmsg_alloc();
4641 if (!flags)
4642 goto nla_put_failure;
4643
4644 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
4645
4646 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
4647
4648 nlmsg_free(flags);
4649
4650 if (err)
4651 goto nla_put_failure;
4652 } else if (wds) {
4653 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4654 }
4655
4656 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4657 if (ret) {
4658 nla_put_failure:
4659 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4660 ifname, ret, strerror(-ret));
4661 return ret;
4662 }
4663
4664 ifidx = if_nametoindex(ifname);
4665 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4666 ifname, ifidx);
4667
4668 if (ifidx <= 0)
4669 return -1;
4670
4671 /* start listening for EAPOL on this interface */
4672 add_ifidx(drv, ifidx);
4673
4674 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4675 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4676 nl80211_remove_iface(drv, ifidx);
4677 return -1;
4678 }
4679
4680 return ifidx;
4681 }
4682
4683
4684 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4685 const char *ifname, enum nl80211_iftype iftype,
4686 const u8 *addr, int wds)
4687 {
4688 int ret;
4689
4690 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
4691
4692 /* if error occurred and interface exists already */
4693 if (ret == -ENFILE && if_nametoindex(ifname)) {
4694 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4695
4696 /* Try to remove the interface that was already there. */
4697 nl80211_remove_iface(drv, if_nametoindex(ifname));
4698
4699 /* Try to create the interface again */
4700 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4701 wds);
4702 }
4703
4704 if (ret >= 0 && is_p2p_interface(iftype))
4705 nl80211_disable_11b_rates(drv, ret, 1);
4706
4707 return ret;
4708 }
4709
4710
4711 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
4712 {
4713 struct ieee80211_hdr *hdr;
4714 u16 fc;
4715 union wpa_event_data event;
4716
4717 hdr = (struct ieee80211_hdr *) buf;
4718 fc = le_to_host16(hdr->frame_control);
4719
4720 os_memset(&event, 0, sizeof(event));
4721 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
4722 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
4723 event.tx_status.dst = hdr->addr1;
4724 event.tx_status.data = buf;
4725 event.tx_status.data_len = len;
4726 event.tx_status.ack = ok;
4727 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
4728 }
4729
4730
4731 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
4732 u8 *buf, size_t len)
4733 {
4734 struct ieee80211_hdr *hdr = (void *)buf;
4735 u16 fc;
4736 union wpa_event_data event;
4737
4738 if (len < sizeof(*hdr))
4739 return;
4740
4741 fc = le_to_host16(hdr->frame_control);
4742
4743 os_memset(&event, 0, sizeof(event));
4744 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
4745 event.rx_from_unknown.addr = hdr->addr2;
4746 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
4747 (WLAN_FC_FROMDS | WLAN_FC_TODS);
4748 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4749 }
4750
4751
4752 static void handle_frame(struct wpa_driver_nl80211_data *drv,
4753 u8 *buf, size_t len, int datarate, int ssi_signal)
4754 {
4755 struct ieee80211_hdr *hdr;
4756 u16 fc;
4757 union wpa_event_data event;
4758
4759 hdr = (struct ieee80211_hdr *) buf;
4760 fc = le_to_host16(hdr->frame_control);
4761
4762 switch (WLAN_FC_GET_TYPE(fc)) {
4763 case WLAN_FC_TYPE_MGMT:
4764 os_memset(&event, 0, sizeof(event));
4765 event.rx_mgmt.frame = buf;
4766 event.rx_mgmt.frame_len = len;
4767 event.rx_mgmt.datarate = datarate;
4768 event.rx_mgmt.ssi_signal = ssi_signal;
4769 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
4770 break;
4771 case WLAN_FC_TYPE_CTRL:
4772 /* can only get here with PS-Poll frames */
4773 wpa_printf(MSG_DEBUG, "CTRL");
4774 from_unknown_sta(drv, buf, len);
4775 break;
4776 case WLAN_FC_TYPE_DATA:
4777 from_unknown_sta(drv, buf, len);
4778 break;
4779 }
4780 }
4781
4782
4783 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
4784 {
4785 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4786 int len;
4787 unsigned char buf[3000];
4788 struct ieee80211_radiotap_iterator iter;
4789 int ret;
4790 int datarate = 0, ssi_signal = 0;
4791 int injected = 0, failed = 0, rxflags = 0;
4792
4793 len = recv(sock, buf, sizeof(buf), 0);
4794 if (len < 0) {
4795 perror("recv");
4796 return;
4797 }
4798
4799 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
4800 printf("received invalid radiotap frame\n");
4801 return;
4802 }
4803
4804 while (1) {
4805 ret = ieee80211_radiotap_iterator_next(&iter);
4806 if (ret == -ENOENT)
4807 break;
4808 if (ret) {
4809 printf("received invalid radiotap frame (%d)\n", ret);
4810 return;
4811 }
4812 switch (iter.this_arg_index) {
4813 case IEEE80211_RADIOTAP_FLAGS:
4814 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
4815 len -= 4;
4816 break;
4817 case IEEE80211_RADIOTAP_RX_FLAGS:
4818 rxflags = 1;
4819 break;
4820 case IEEE80211_RADIOTAP_TX_FLAGS:
4821 injected = 1;
4822 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
4823 IEEE80211_RADIOTAP_F_TX_FAIL;
4824 break;
4825 case IEEE80211_RADIOTAP_DATA_RETRIES:
4826 break;
4827 case IEEE80211_RADIOTAP_CHANNEL:
4828 /* TODO: convert from freq/flags to channel number */
4829 break;
4830 case IEEE80211_RADIOTAP_RATE:
4831 datarate = *iter.this_arg * 5;
4832 break;
4833 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
4834 ssi_signal = *iter.this_arg;
4835 break;
4836 }
4837 }
4838
4839 if (rxflags && injected)
4840 return;
4841
4842 if (!injected)
4843 handle_frame(drv, buf + iter.max_length,
4844 len - iter.max_length, datarate, ssi_signal);
4845 else
4846 handle_tx_callback(drv->ctx, buf + iter.max_length,
4847 len - iter.max_length, !failed);
4848 }
4849
4850
4851 /*
4852 * we post-process the filter code later and rewrite
4853 * this to the offset to the last instruction
4854 */
4855 #define PASS 0xFF
4856 #define FAIL 0xFE
4857
4858 static struct sock_filter msock_filter_insns[] = {
4859 /*
4860 * do a little-endian load of the radiotap length field
4861 */
4862 /* load lower byte into A */
4863 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
4864 /* put it into X (== index register) */
4865 BPF_STMT(BPF_MISC| BPF_TAX, 0),
4866 /* load upper byte into A */
4867 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
4868 /* left-shift it by 8 */
4869 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
4870 /* or with X */
4871 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
4872 /* put result into X */
4873 BPF_STMT(BPF_MISC| BPF_TAX, 0),
4874
4875 /*
4876 * Allow management frames through, this also gives us those
4877 * management frames that we sent ourselves with status
4878 */
4879 /* load the lower byte of the IEEE 802.11 frame control field */
4880 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4881 /* mask off frame type and version */
4882 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
4883 /* accept frame if it's both 0, fall through otherwise */
4884 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
4885
4886 /*
4887 * TODO: add a bit to radiotap RX flags that indicates
4888 * that the sending station is not associated, then
4889 * add a filter here that filters on our DA and that flag
4890 * to allow us to deauth frames to that bad station.
4891 *
4892 * For now allow all To DS data frames through.
4893 */
4894 /* load the IEEE 802.11 frame control field */
4895 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
4896 /* mask off frame type, version and DS status */
4897 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
4898 /* accept frame if version 0, type 2 and To DS, fall through otherwise
4899 */
4900 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
4901
4902 #if 0
4903 /*
4904 * drop non-data frames
4905 */
4906 /* load the lower byte of the frame control field */
4907 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4908 /* mask off QoS bit */
4909 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
4910 /* drop non-data frames */
4911 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
4912 #endif
4913 /* load the upper byte of the frame control field */
4914 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
4915 /* mask off toDS/fromDS */
4916 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
4917 /* accept WDS frames */
4918 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
4919
4920 /*
4921 * add header length to index
4922 */
4923 /* load the lower byte of the frame control field */
4924 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4925 /* mask off QoS bit */
4926 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
4927 /* right shift it by 6 to give 0 or 2 */
4928 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
4929 /* add data frame header length */
4930 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
4931 /* add index, was start of 802.11 header */
4932 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
4933 /* move to index, now start of LL header */
4934 BPF_STMT(BPF_MISC | BPF_TAX, 0),
4935
4936 /*
4937 * Accept empty data frames, we use those for
4938 * polling activity.
4939 */
4940 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
4941 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
4942
4943 /*
4944 * Accept EAPOL frames
4945 */
4946 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
4947 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
4948 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
4949 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
4950
4951 /* keep these last two statements or change the code below */
4952 /* return 0 == "DROP" */
4953 BPF_STMT(BPF_RET | BPF_K, 0),
4954 /* return ~0 == "keep all" */
4955 BPF_STMT(BPF_RET | BPF_K, ~0),
4956 };
4957
4958 static struct sock_fprog msock_filter = {
4959 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
4960 .filter = msock_filter_insns,
4961 };
4962
4963
4964 static int add_monitor_filter(int s)
4965 {
4966 int idx;
4967
4968 /* rewrite all PASS/FAIL jump offsets */
4969 for (idx = 0; idx < msock_filter.len; idx++) {
4970 struct sock_filter *insn = &msock_filter_insns[idx];
4971
4972 if (BPF_CLASS(insn->code) == BPF_JMP) {
4973 if (insn->code == (BPF_JMP|BPF_JA)) {
4974 if (insn->k == PASS)
4975 insn->k = msock_filter.len - idx - 2;
4976 else if (insn->k == FAIL)
4977 insn->k = msock_filter.len - idx - 3;
4978 }
4979
4980 if (insn->jt == PASS)
4981 insn->jt = msock_filter.len - idx - 2;
4982 else if (insn->jt == FAIL)
4983 insn->jt = msock_filter.len - idx - 3;
4984
4985 if (insn->jf == PASS)
4986 insn->jf = msock_filter.len - idx - 2;
4987 else if (insn->jf == FAIL)
4988 insn->jf = msock_filter.len - idx - 3;
4989 }
4990 }
4991
4992 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
4993 &msock_filter, sizeof(msock_filter))) {
4994 perror("SO_ATTACH_FILTER");
4995 return -1;
4996 }
4997
4998 return 0;
4999 }
5000
5001
5002 static void nl80211_remove_monitor_interface(
5003 struct wpa_driver_nl80211_data *drv)
5004 {
5005 if (drv->monitor_ifidx >= 0) {
5006 nl80211_remove_iface(drv, drv->monitor_ifidx);
5007 drv->monitor_ifidx = -1;
5008 }
5009 if (drv->monitor_sock >= 0) {
5010 eloop_unregister_read_sock(drv->monitor_sock);
5011 close(drv->monitor_sock);
5012 drv->monitor_sock = -1;
5013 }
5014 }
5015
5016
5017 static int
5018 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
5019 {
5020 char buf[IFNAMSIZ];
5021 struct sockaddr_ll ll;
5022 int optval;
5023 socklen_t optlen;
5024
5025 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
5026 /*
5027 * P2P interface name is of the format p2p-%s-%d. For monitor
5028 * interface name corresponding to P2P GO, replace "p2p-" with
5029 * "mon-" to retain the same interface name length and to
5030 * indicate that it is a monitor interface.
5031 */
5032 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
5033 } else {
5034 /* Non-P2P interface with AP functionality. */
5035 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
5036 }
5037
5038 buf[IFNAMSIZ - 1] = '\0';
5039
5040 drv->monitor_ifidx =
5041 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
5042 0);
5043
5044 if (drv->monitor_ifidx == -EOPNOTSUPP) {
5045 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
5046 "monitor interface type - try to run without it");
5047 drv->no_monitor_iface_capab = 1;
5048 }
5049
5050 if (drv->monitor_ifidx < 0)
5051 return -1;
5052
5053 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
5054 goto error;
5055
5056 memset(&ll, 0, sizeof(ll));
5057 ll.sll_family = AF_PACKET;
5058 ll.sll_ifindex = drv->monitor_ifidx;
5059 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
5060 if (drv->monitor_sock < 0) {
5061 perror("socket[PF_PACKET,SOCK_RAW]");
5062 goto error;
5063 }
5064
5065 if (add_monitor_filter(drv->monitor_sock)) {
5066 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
5067 "interface; do filtering in user space");
5068 /* This works, but will cost in performance. */
5069 }
5070
5071 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
5072 perror("monitor socket bind");
5073 goto error;
5074 }
5075
5076 optlen = sizeof(optval);
5077 optval = 20;
5078 if (setsockopt
5079 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
5080 perror("Failed to set socket priority");
5081 goto error;
5082 }
5083
5084 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
5085 drv, NULL)) {
5086 printf("Could not register monitor read socket\n");
5087 goto error;
5088 }
5089
5090 return 0;
5091 error:
5092 nl80211_remove_monitor_interface(drv);
5093 return -1;
5094 }
5095
5096
5097 #ifdef CONFIG_AP
5098 static int nl80211_send_eapol_data(struct i802_bss *bss,
5099 const u8 *addr, const u8 *data,
5100 size_t data_len, const u8 *own_addr)
5101 {
5102 if (bss->drv->l2 == NULL) {
5103 wpa_printf(MSG_DEBUG, "nl80211: No l2_packet to send EAPOL");
5104 return -1;
5105 }
5106
5107 if (l2_packet_send(bss->drv->l2, addr, ETH_P_EAPOL, data, data_len) <
5108 0)
5109 return -1;
5110 return 0;
5111 }
5112 #endif /* CONFIG_AP */
5113
5114
5115 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
5116
5117 static int wpa_driver_nl80211_hapd_send_eapol(
5118 void *priv, const u8 *addr, const u8 *data,
5119 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
5120 {
5121 struct i802_bss *bss = priv;
5122 struct wpa_driver_nl80211_data *drv = bss->drv;
5123 struct ieee80211_hdr *hdr;
5124 size_t len;
5125 u8 *pos;
5126 int res;
5127 int qos = flags & WPA_STA_WMM;
5128
5129 #ifdef CONFIG_AP
5130 if (drv->no_monitor_iface_capab)
5131 return nl80211_send_eapol_data(bss, addr, data, data_len,
5132 own_addr);
5133 #endif /* CONFIG_AP */
5134
5135 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
5136 data_len;
5137 hdr = os_zalloc(len);
5138 if (hdr == NULL) {
5139 printf("malloc() failed for i802_send_data(len=%lu)\n",
5140 (unsigned long) len);
5141 return -1;
5142 }
5143
5144 hdr->frame_control =
5145 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
5146 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
5147 if (encrypt)
5148 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
5149 if (qos) {
5150 hdr->frame_control |=
5151 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
5152 }
5153
5154 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
5155 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
5156 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
5157 pos = (u8 *) (hdr + 1);
5158
5159 if (qos) {
5160 /* add an empty QoS header if needed */
5161 pos[0] = 0;
5162 pos[1] = 0;
5163 pos += 2;
5164 }
5165
5166 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
5167 pos += sizeof(rfc1042_header);
5168 WPA_PUT_BE16(pos, ETH_P_PAE);
5169 pos += 2;
5170 memcpy(pos, data, data_len);
5171
5172 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
5173 if (res < 0) {
5174 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
5175 "failed: %d (%s)",
5176 (unsigned long) len, errno, strerror(errno));
5177 }
5178 os_free(hdr);
5179
5180 return res;
5181 }
5182
5183
5184 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
5185 int total_flags,
5186 int flags_or, int flags_and)
5187 {
5188 struct i802_bss *bss = priv;
5189 struct wpa_driver_nl80211_data *drv = bss->drv;
5190 struct nl_msg *msg, *flags = NULL;
5191 struct nl80211_sta_flag_update upd;
5192
5193 msg = nlmsg_alloc();
5194 if (!msg)
5195 return -ENOMEM;
5196
5197 flags = nlmsg_alloc();
5198 if (!flags) {
5199 nlmsg_free(msg);
5200 return -ENOMEM;
5201 }
5202
5203 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5204
5205 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5206 if_nametoindex(bss->ifname));
5207 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5208
5209 /*
5210 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
5211 * can be removed eventually.
5212 */
5213 if (total_flags & WPA_STA_AUTHORIZED)
5214 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
5215
5216 if (total_flags & WPA_STA_WMM)
5217 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
5218
5219 if (total_flags & WPA_STA_SHORT_PREAMBLE)
5220 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
5221
5222 if (total_flags & WPA_STA_MFP)
5223 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
5224
5225 if (total_flags & WPA_STA_TDLS_PEER)
5226 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
5227
5228 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
5229 goto nla_put_failure;
5230
5231 os_memset(&upd, 0, sizeof(upd));
5232 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
5233 upd.set = sta_flags_nl80211(flags_or);
5234 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5235
5236 nlmsg_free(flags);
5237
5238 return send_and_recv_msgs(drv, msg, NULL, NULL);
5239 nla_put_failure:
5240 nlmsg_free(flags);
5241 return -ENOBUFS;
5242 }
5243
5244
5245 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5246 struct wpa_driver_associate_params *params)
5247 {
5248 enum nl80211_iftype nlmode;
5249
5250 if (params->p2p) {
5251 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5252 "group (GO)");
5253 nlmode = NL80211_IFTYPE_P2P_GO;
5254 } else
5255 nlmode = NL80211_IFTYPE_AP;
5256
5257 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
5258 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
5259 nl80211_remove_monitor_interface(drv);
5260 return -1;
5261 }
5262
5263 if (drv->no_monitor_iface_capab) {
5264 if (wpa_driver_nl80211_probe_req_report(&drv->first_bss, 1) < 0)
5265 {
5266 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
5267 "Probe Request frame reporting in AP mode");
5268 /* Try to survive without this */
5269 }
5270 }
5271
5272 drv->ap_oper_freq = params->freq;
5273
5274 return 0;
5275 }
5276
5277
5278 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5279 {
5280 struct nl_msg *msg;
5281 int ret = -1;
5282
5283 msg = nlmsg_alloc();
5284 if (!msg)
5285 return -1;
5286
5287 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5288 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5289 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5290 msg = NULL;
5291 if (ret) {
5292 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5293 "(%s)", ret, strerror(-ret));
5294 goto nla_put_failure;
5295 }
5296
5297 ret = 0;
5298 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5299
5300 nla_put_failure:
5301 nlmsg_free(msg);
5302 return ret;
5303 }
5304
5305
5306 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5307 struct wpa_driver_associate_params *params)
5308 {
5309 struct nl_msg *msg;
5310 int ret = -1;
5311 int count = 0;
5312
5313 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5314
5315 if (wpa_driver_nl80211_set_mode(&drv->first_bss,
5316 NL80211_IFTYPE_ADHOC)) {
5317 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5318 "IBSS mode");
5319 return -1;
5320 }
5321
5322 retry:
5323 msg = nlmsg_alloc();
5324 if (!msg)
5325 return -1;
5326
5327 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5328 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5329
5330 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5331 goto nla_put_failure;
5332
5333 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5334 params->ssid, params->ssid_len);
5335 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5336 params->ssid);
5337 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5338 drv->ssid_len = params->ssid_len;
5339
5340 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5341 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5342
5343 ret = nl80211_set_conn_keys(params, msg);
5344 if (ret)
5345 goto nla_put_failure;
5346
5347 if (params->wpa_ie) {
5348 wpa_hexdump(MSG_DEBUG,
5349 " * Extra IEs for Beacon/Probe Response frames",
5350 params->wpa_ie, params->wpa_ie_len);
5351 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5352 params->wpa_ie);
5353 }
5354
5355 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5356 msg = NULL;
5357 if (ret) {
5358 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5359 ret, strerror(-ret));
5360 count++;
5361 if (ret == -EALREADY && count == 1) {
5362 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5363 "forced leave");
5364 nl80211_leave_ibss(drv);
5365 nlmsg_free(msg);
5366 goto retry;
5367 }
5368
5369 goto nla_put_failure;
5370 }
5371 ret = 0;
5372 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5373
5374 nla_put_failure:
5375 nlmsg_free(msg);
5376 return ret;
5377 }
5378
5379
5380 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
5381 u8 *bssid)
5382 {
5383 struct nl_msg *msg;
5384 int ret;
5385 struct nl80211_bss_info_arg arg;
5386
5387 os_memset(&arg, 0, sizeof(arg));
5388 msg = nlmsg_alloc();
5389 if (!msg)
5390 goto nla_put_failure;
5391
5392 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
5393 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5394
5395 arg.drv = drv;
5396 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
5397 msg = NULL;
5398 if (ret == 0) {
5399 if (is_zero_ether_addr(arg.assoc_bssid))
5400 return -ENOTCONN;
5401 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
5402 return 0;
5403 }
5404 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
5405 "(%s)", ret, strerror(-ret));
5406 nla_put_failure:
5407 nlmsg_free(msg);
5408 return drv->assoc_freq;
5409 }
5410
5411
5412 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
5413 const u8 *bssid)
5414 {
5415 u8 addr[ETH_ALEN];
5416
5417 if (bssid == NULL) {
5418 int res = nl80211_get_assoc_bssid(drv, addr);
5419 if (res)
5420 return res;
5421 bssid = addr;
5422 }
5423
5424 return wpa_driver_nl80211_disconnect(drv, bssid,
5425 WLAN_REASON_PREV_AUTH_NOT_VALID);
5426 }
5427
5428
5429 static int wpa_driver_nl80211_connect(
5430 struct wpa_driver_nl80211_data *drv,
5431 struct wpa_driver_associate_params *params)
5432 {
5433 struct nl_msg *msg;
5434 enum nl80211_auth_type type;
5435 int ret = 0;
5436 int algs;
5437
5438 msg = nlmsg_alloc();
5439 if (!msg)
5440 return -1;
5441
5442 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5443 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5444
5445 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5446 if (params->bssid) {
5447 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5448 MAC2STR(params->bssid));
5449 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5450 }
5451 if (params->freq) {
5452 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5453 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5454 }
5455 if (params->ssid) {
5456 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5457 params->ssid, params->ssid_len);
5458 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5459 params->ssid);
5460 if (params->ssid_len > sizeof(drv->ssid))
5461 goto nla_put_failure;
5462 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5463 drv->ssid_len = params->ssid_len;
5464 }
5465 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5466 if (params->wpa_ie)
5467 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5468 params->wpa_ie);
5469
5470 algs = 0;
5471 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5472 algs++;
5473 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5474 algs++;
5475 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5476 algs++;
5477 if (algs > 1) {
5478 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
5479 "selection");
5480 goto skip_auth_type;
5481 }
5482
5483 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5484 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5485 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5486 type = NL80211_AUTHTYPE_SHARED_KEY;
5487 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5488 type = NL80211_AUTHTYPE_NETWORK_EAP;
5489 else if (params->auth_alg & WPA_AUTH_ALG_FT)
5490 type = NL80211_AUTHTYPE_FT;
5491 else
5492 goto nla_put_failure;
5493
5494 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
5495 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5496
5497 skip_auth_type:
5498 if (params->wpa_proto) {
5499 enum nl80211_wpa_versions ver = 0;
5500
5501 if (params->wpa_proto & WPA_PROTO_WPA)
5502 ver |= NL80211_WPA_VERSION_1;
5503 if (params->wpa_proto & WPA_PROTO_RSN)
5504 ver |= NL80211_WPA_VERSION_2;
5505
5506 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
5507 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5508 }
5509
5510 if (params->pairwise_suite != CIPHER_NONE) {
5511 int cipher;
5512
5513 switch (params->pairwise_suite) {
5514 case CIPHER_WEP40:
5515 cipher = WLAN_CIPHER_SUITE_WEP40;
5516 break;
5517 case CIPHER_WEP104:
5518 cipher = WLAN_CIPHER_SUITE_WEP104;
5519 break;
5520 case CIPHER_CCMP:
5521 cipher = WLAN_CIPHER_SUITE_CCMP;
5522 break;
5523 case CIPHER_TKIP:
5524 default:
5525 cipher = WLAN_CIPHER_SUITE_TKIP;
5526 break;
5527 }
5528 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5529 }
5530
5531 if (params->group_suite != CIPHER_NONE) {
5532 int cipher;
5533
5534 switch (params->group_suite) {
5535 case CIPHER_WEP40:
5536 cipher = WLAN_CIPHER_SUITE_WEP40;
5537 break;
5538 case CIPHER_WEP104:
5539 cipher = WLAN_CIPHER_SUITE_WEP104;
5540 break;
5541 case CIPHER_CCMP:
5542 cipher = WLAN_CIPHER_SUITE_CCMP;
5543 break;
5544 case CIPHER_TKIP:
5545 default:
5546 cipher = WLAN_CIPHER_SUITE_TKIP;
5547 break;
5548 }
5549 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5550 }
5551
5552 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
5553 params->key_mgmt_suite == KEY_MGMT_PSK) {
5554 int mgmt = WLAN_AKM_SUITE_PSK;
5555
5556 switch (params->key_mgmt_suite) {
5557 case KEY_MGMT_802_1X:
5558 mgmt = WLAN_AKM_SUITE_8021X;
5559 break;
5560 case KEY_MGMT_PSK:
5561 default:
5562 mgmt = WLAN_AKM_SUITE_PSK;
5563 break;
5564 }
5565 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5566 }
5567
5568 ret = nl80211_set_conn_keys(params, msg);
5569 if (ret)
5570 goto nla_put_failure;
5571
5572 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5573 msg = NULL;
5574 if (ret) {
5575 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5576 "(%s)", ret, strerror(-ret));
5577 /*
5578 * cfg80211 does not currently accept new connection if we are
5579 * already connected. As a workaround, force disconnection and
5580 * try again once the driver indicates it completed
5581 * disconnection.
5582 */
5583 if (ret == -EALREADY)
5584 nl80211_disconnect(drv, params->bssid);
5585 goto nla_put_failure;
5586 }
5587 ret = 0;
5588 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5589
5590 nla_put_failure:
5591 nlmsg_free(msg);
5592 return ret;
5593
5594 }
5595
5596
5597 static int wpa_driver_nl80211_associate(
5598 void *priv, struct wpa_driver_associate_params *params)
5599 {
5600 struct i802_bss *bss = priv;
5601 struct wpa_driver_nl80211_data *drv = bss->drv;
5602 int ret = -1;
5603 struct nl_msg *msg;
5604
5605 if (params->mode == IEEE80211_MODE_AP)
5606 return wpa_driver_nl80211_ap(drv, params);
5607
5608 if (params->mode == IEEE80211_MODE_IBSS)
5609 return wpa_driver_nl80211_ibss(drv, params);
5610
5611 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5612 enum nl80211_iftype nlmode = params->p2p ?
5613 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5614
5615 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5616 return -1;
5617 return wpa_driver_nl80211_connect(drv, params);
5618 }
5619
5620 drv->associated = 0;
5621
5622 msg = nlmsg_alloc();
5623 if (!msg)
5624 return -1;
5625
5626 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5627 drv->ifindex);
5628 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5629
5630 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5631 if (params->bssid) {
5632 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5633 MAC2STR(params->bssid));
5634 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5635 }
5636 if (params->freq) {
5637 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
5638 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5639 drv->assoc_freq = params->freq;
5640 } else
5641 drv->assoc_freq = 0;
5642 if (params->ssid) {
5643 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5644 params->ssid, params->ssid_len);
5645 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5646 params->ssid);
5647 if (params->ssid_len > sizeof(drv->ssid))
5648 goto nla_put_failure;
5649 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5650 drv->ssid_len = params->ssid_len;
5651 }
5652 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5653 if (params->wpa_ie)
5654 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5655 params->wpa_ie);
5656
5657 if (params->pairwise_suite != CIPHER_NONE) {
5658 int cipher;
5659
5660 switch (params->pairwise_suite) {
5661 case CIPHER_WEP40:
5662 cipher = WLAN_CIPHER_SUITE_WEP40;
5663 break;
5664 case CIPHER_WEP104:
5665 cipher = WLAN_CIPHER_SUITE_WEP104;
5666 break;
5667 case CIPHER_CCMP:
5668 cipher = WLAN_CIPHER_SUITE_CCMP;
5669 break;
5670 case CIPHER_TKIP:
5671 default:
5672 cipher = WLAN_CIPHER_SUITE_TKIP;
5673 break;
5674 }
5675 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
5676 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5677 }
5678
5679 if (params->group_suite != CIPHER_NONE) {
5680 int cipher;
5681
5682 switch (params->group_suite) {
5683 case CIPHER_WEP40:
5684 cipher = WLAN_CIPHER_SUITE_WEP40;
5685 break;
5686 case CIPHER_WEP104:
5687 cipher = WLAN_CIPHER_SUITE_WEP104;
5688 break;
5689 case CIPHER_CCMP:
5690 cipher = WLAN_CIPHER_SUITE_CCMP;
5691 break;
5692 case CIPHER_TKIP:
5693 default:
5694 cipher = WLAN_CIPHER_SUITE_TKIP;
5695 break;
5696 }
5697 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
5698 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5699 }
5700
5701 #ifdef CONFIG_IEEE80211W
5702 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5703 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5704 #endif /* CONFIG_IEEE80211W */
5705
5706 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5707
5708 if (params->prev_bssid) {
5709 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
5710 MAC2STR(params->prev_bssid));
5711 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5712 params->prev_bssid);
5713 }
5714
5715 if (params->p2p)
5716 wpa_printf(MSG_DEBUG, " * P2P group");
5717
5718 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5719 msg = NULL;
5720 if (ret) {
5721 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
5722 "(%s)", ret, strerror(-ret));
5723 nl80211_dump_scan(drv);
5724 goto nla_put_failure;
5725 }
5726 ret = 0;
5727 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5728 "successfully");
5729
5730 nla_put_failure:
5731 nlmsg_free(msg);
5732 return ret;
5733 }
5734
5735
5736 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5737 int ifindex, enum nl80211_iftype mode)
5738 {
5739 struct nl_msg *msg;
5740 int ret = -ENOBUFS;
5741
5742 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5743 ifindex, mode, nl80211_iftype_str(mode));
5744
5745 msg = nlmsg_alloc();
5746 if (!msg)
5747 return -ENOMEM;
5748
5749 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5750 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5751 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5752
5753 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5754 if (!ret)
5755 return 0;
5756 nla_put_failure:
5757 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5758 " %d (%s)", ifindex, mode, ret, strerror(-ret));
5759 return ret;
5760 }
5761
5762
5763 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5764 enum nl80211_iftype nlmode)
5765 {
5766 struct wpa_driver_nl80211_data *drv = bss->drv;
5767 int ret = -1;
5768 int i;
5769 int was_ap = is_ap_interface(drv->nlmode);
5770
5771 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
5772 drv->nlmode = nlmode;
5773 ret = 0;
5774 goto done;
5775 }
5776
5777 if (nlmode == drv->nlmode) {
5778 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5779 "requested mode - ignore error");
5780 ret = 0;
5781 goto done; /* Already in the requested mode */
5782 }
5783
5784 /* mac80211 doesn't allow mode changes while the device is up, so
5785 * take the device down, try to set the mode again, and bring the
5786 * device back up.
5787 */
5788 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5789 "interface down");
5790 for (i = 0; i < 10; i++) {
5791 int res;
5792 res = linux_set_iface_flags(drv->global->ioctl_sock,
5793 bss->ifname, 0);
5794 if (res == -EACCES || res == -ENODEV)
5795 break;
5796 if (res == 0) {
5797 /* Try to set the mode again while the interface is
5798 * down */
5799 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
5800 if (ret == -EACCES)
5801 break;
5802 res = linux_set_iface_flags(drv->global->ioctl_sock,
5803 bss->ifname, 1);
5804 if (res && !ret)
5805 ret = -1;
5806 else if (ret != -EBUSY)
5807 break;
5808 } else
5809 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5810 "interface down");
5811 os_sleep(0, 100000);
5812 }
5813
5814 if (!ret) {
5815 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5816 "interface is down");
5817 drv->nlmode = nlmode;
5818 drv->ignore_if_down_event = 1;
5819 }
5820
5821 done:
5822 if (!ret && is_ap_interface(nlmode)) {
5823 /* Setup additional AP mode functionality if needed */
5824 if (!drv->no_monitor_iface_capab && drv->monitor_ifidx < 0 &&
5825 nl80211_create_monitor_interface(drv) &&
5826 !drv->no_monitor_iface_capab)
5827 return -1;
5828 } else if (!ret && !is_ap_interface(nlmode)) {
5829 /* Remove additional AP mode functionality */
5830 if (was_ap && drv->no_monitor_iface_capab)
5831 wpa_driver_nl80211_probe_req_report(bss, 0);
5832 nl80211_remove_monitor_interface(drv);
5833 bss->beacon_set = 0;
5834 }
5835
5836 if (!ret && is_p2p_interface(drv->nlmode)) {
5837 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5838 drv->disabled_11b_rates = 1;
5839 } else if (!ret && drv->disabled_11b_rates) {
5840 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5841 drv->disabled_11b_rates = 0;
5842 }
5843
5844 if (ret)
5845 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5846 "from %d failed", nlmode, drv->nlmode);
5847
5848 return ret;
5849 }
5850
5851
5852 static int wpa_driver_nl80211_get_capa(void *priv,
5853 struct wpa_driver_capa *capa)
5854 {
5855 struct i802_bss *bss = priv;
5856 struct wpa_driver_nl80211_data *drv = bss->drv;
5857 if (!drv->has_capability)
5858 return -1;
5859 os_memcpy(capa, &drv->capa, sizeof(*capa));
5860 return 0;
5861 }
5862
5863
5864 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5865 {
5866 struct i802_bss *bss = priv;
5867 struct wpa_driver_nl80211_data *drv = bss->drv;
5868
5869 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
5870 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
5871 drv->operstate = state;
5872 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5873 state ? IF_OPER_UP : IF_OPER_DORMANT);
5874 }
5875
5876
5877 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5878 {
5879 struct i802_bss *bss = priv;
5880 struct wpa_driver_nl80211_data *drv = bss->drv;
5881 struct nl_msg *msg;
5882 struct nl80211_sta_flag_update upd;
5883
5884 msg = nlmsg_alloc();
5885 if (!msg)
5886 return -ENOMEM;
5887
5888 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5889
5890 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5891 if_nametoindex(bss->ifname));
5892 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5893
5894 os_memset(&upd, 0, sizeof(upd));
5895 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5896 if (authorized)
5897 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5898 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5899
5900 return send_and_recv_msgs(drv, msg, NULL, NULL);
5901 nla_put_failure:
5902 return -ENOBUFS;
5903 }
5904
5905
5906 /* Set kernel driver on given frequency (MHz) */
5907 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5908 {
5909 struct i802_bss *bss = priv;
5910 struct wpa_driver_nl80211_data *drv = bss->drv;
5911 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
5912 freq->sec_channel_offset);
5913 }
5914
5915
5916 #if defined(HOSTAPD) || defined(CONFIG_AP)
5917
5918 static inline int min_int(int a, int b)
5919 {
5920 if (a < b)
5921 return a;
5922 return b;
5923 }
5924
5925
5926 static int get_key_handler(struct nl_msg *msg, void *arg)
5927 {
5928 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5929 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5930
5931 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5932 genlmsg_attrlen(gnlh, 0), NULL);
5933
5934 /*
5935 * TODO: validate the key index and mac address!
5936 * Otherwise, there's a race condition as soon as
5937 * the kernel starts sending key notifications.
5938 */
5939
5940 if (tb[NL80211_ATTR_KEY_SEQ])
5941 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5942 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5943 return NL_SKIP;
5944 }
5945
5946
5947 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5948 int idx, u8 *seq)
5949 {
5950 struct i802_bss *bss = priv;
5951 struct wpa_driver_nl80211_data *drv = bss->drv;
5952 struct nl_msg *msg;
5953
5954 msg = nlmsg_alloc();
5955 if (!msg)
5956 return -ENOMEM;
5957
5958 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5959
5960 if (addr)
5961 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5962 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5963 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5964
5965 memset(seq, 0, 6);
5966
5967 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5968 nla_put_failure:
5969 return -ENOBUFS;
5970 }
5971
5972
5973 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
5974 int mode)
5975 {
5976 struct i802_bss *bss = priv;
5977 struct wpa_driver_nl80211_data *drv = bss->drv;
5978 struct nl_msg *msg;
5979 u8 rates[NL80211_MAX_SUPP_RATES];
5980 u8 rates_len = 0;
5981 int i;
5982
5983 msg = nlmsg_alloc();
5984 if (!msg)
5985 return -ENOMEM;
5986
5987 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5988
5989 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
5990 rates[rates_len++] = basic_rates[i] / 5;
5991
5992 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5993
5994 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5995
5996 return send_and_recv_msgs(drv, msg, NULL, NULL);
5997 nla_put_failure:
5998 return -ENOBUFS;
5999 }
6000
6001
6002 static int i802_set_rts(void *priv, int rts)
6003 {
6004 struct i802_bss *bss = priv;
6005 struct wpa_driver_nl80211_data *drv = bss->drv;
6006 struct nl_msg *msg;
6007 int ret = -ENOBUFS;
6008 u32 val;
6009
6010 msg = nlmsg_alloc();
6011 if (!msg)
6012 return -ENOMEM;
6013
6014 if (rts >= 2347)
6015 val = (u32) -1;
6016 else
6017 val = rts;
6018
6019 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6020 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6021 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
6022
6023 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6024 if (!ret)
6025 return 0;
6026 nla_put_failure:
6027 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
6028 "%d (%s)", rts, ret, strerror(-ret));
6029 return ret;
6030 }
6031
6032
6033 static int i802_set_frag(void *priv, int frag)
6034 {
6035 struct i802_bss *bss = priv;
6036 struct wpa_driver_nl80211_data *drv = bss->drv;
6037 struct nl_msg *msg;
6038 int ret = -ENOBUFS;
6039 u32 val;
6040
6041 msg = nlmsg_alloc();
6042 if (!msg)
6043 return -ENOMEM;
6044
6045 if (frag >= 2346)
6046 val = (u32) -1;
6047 else
6048 val = frag;
6049
6050 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6052 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
6053
6054 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6055 if (!ret)
6056 return 0;
6057 nla_put_failure:
6058 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
6059 "%d: %d (%s)", frag, ret, strerror(-ret));
6060 return ret;
6061 }
6062
6063
6064 static int i802_flush(void *priv)
6065 {
6066 struct i802_bss *bss = priv;
6067 struct wpa_driver_nl80211_data *drv = bss->drv;
6068 struct nl_msg *msg;
6069
6070 msg = nlmsg_alloc();
6071 if (!msg)
6072 return -1;
6073
6074 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
6075
6076 /*
6077 * XXX: FIX! this needs to flush all VLANs too
6078 */
6079 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6080 if_nametoindex(bss->ifname));
6081
6082 return send_and_recv_msgs(drv, msg, NULL, NULL);
6083 nla_put_failure:
6084 return -ENOBUFS;
6085 }
6086
6087
6088 static int get_sta_handler(struct nl_msg *msg, void *arg)
6089 {
6090 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6091 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6092 struct hostap_sta_driver_data *data = arg;
6093 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
6094 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
6095 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
6096 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
6097 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
6098 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
6099 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
6100 };
6101
6102 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6103 genlmsg_attrlen(gnlh, 0), NULL);
6104
6105 /*
6106 * TODO: validate the interface and mac address!
6107 * Otherwise, there's a race condition as soon as
6108 * the kernel starts sending station notifications.
6109 */
6110
6111 if (!tb[NL80211_ATTR_STA_INFO]) {
6112 wpa_printf(MSG_DEBUG, "sta stats missing!");
6113 return NL_SKIP;
6114 }
6115 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
6116 tb[NL80211_ATTR_STA_INFO],
6117 stats_policy)) {
6118 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
6119 return NL_SKIP;
6120 }
6121
6122 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
6123 data->inactive_msec =
6124 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
6125 if (stats[NL80211_STA_INFO_RX_BYTES])
6126 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
6127 if (stats[NL80211_STA_INFO_TX_BYTES])
6128 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
6129 if (stats[NL80211_STA_INFO_RX_PACKETS])
6130 data->rx_packets =
6131 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
6132 if (stats[NL80211_STA_INFO_TX_PACKETS])
6133 data->tx_packets =
6134 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
6135
6136 return NL_SKIP;
6137 }
6138
6139 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
6140 const u8 *addr)
6141 {
6142 struct i802_bss *bss = priv;
6143 struct wpa_driver_nl80211_data *drv = bss->drv;
6144 struct nl_msg *msg;
6145
6146 os_memset(data, 0, sizeof(*data));
6147 msg = nlmsg_alloc();
6148 if (!msg)
6149 return -ENOMEM;
6150
6151 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
6152
6153 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6154 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6155
6156 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6157 nla_put_failure:
6158 return -ENOBUFS;
6159 }
6160
6161
6162 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6163 int cw_min, int cw_max, int burst_time)
6164 {
6165 struct i802_bss *bss = priv;
6166 struct wpa_driver_nl80211_data *drv = bss->drv;
6167 struct nl_msg *msg;
6168 struct nlattr *txq, *params;
6169
6170 msg = nlmsg_alloc();
6171 if (!msg)
6172 return -1;
6173
6174 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6175
6176 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6177
6178 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6179 if (!txq)
6180 goto nla_put_failure;
6181
6182 /* We are only sending parameters for a single TXQ at a time */
6183 params = nla_nest_start(msg, 1);
6184 if (!params)
6185 goto nla_put_failure;
6186
6187 switch (queue) {
6188 case 0:
6189 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6190 break;
6191 case 1:
6192 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6193 break;
6194 case 2:
6195 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6196 break;
6197 case 3:
6198 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6199 break;
6200 }
6201 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6202 * 32 usec, so need to convert the value here. */
6203 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6204 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6205 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6206 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6207
6208 nla_nest_end(msg, params);
6209
6210 nla_nest_end(msg, txq);
6211
6212 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6213 return 0;
6214 nla_put_failure:
6215 return -1;
6216 }
6217
6218
6219 static int i802_set_sta_vlan(void *priv, const u8 *addr,
6220 const char *ifname, int vlan_id)
6221 {
6222 struct i802_bss *bss = priv;
6223 struct wpa_driver_nl80211_data *drv = bss->drv;
6224 struct nl_msg *msg;
6225 int ret = -ENOBUFS;
6226
6227 msg = nlmsg_alloc();
6228 if (!msg)
6229 return -ENOMEM;
6230
6231 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6232
6233 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6234 if_nametoindex(bss->ifname));
6235 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6236 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6237 if_nametoindex(ifname));
6238
6239 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6240 if (ret < 0) {
6241 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6242 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6243 MAC2STR(addr), ifname, vlan_id, ret,
6244 strerror(-ret));
6245 }
6246 nla_put_failure:
6247 return ret;
6248 }
6249
6250
6251 static int i802_get_inact_sec(void *priv, const u8 *addr)
6252 {
6253 struct hostap_sta_driver_data data;
6254 int ret;
6255
6256 data.inactive_msec = (unsigned long) -1;
6257 ret = i802_read_sta_data(priv, &data, addr);
6258 if (ret || data.inactive_msec == (unsigned long) -1)
6259 return -1;
6260 return data.inactive_msec / 1000;
6261 }
6262
6263
6264 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6265 {
6266 #if 0
6267 /* TODO */
6268 #endif
6269 return 0;
6270 }
6271
6272
6273 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6274 int reason)
6275 {
6276 struct i802_bss *bss = priv;
6277 struct ieee80211_mgmt mgmt;
6278
6279 memset(&mgmt, 0, sizeof(mgmt));
6280 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6281 WLAN_FC_STYPE_DEAUTH);
6282 memcpy(mgmt.da, addr, ETH_ALEN);
6283 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6284 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6285 mgmt.u.deauth.reason_code = host_to_le16(reason);
6286 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6287 IEEE80211_HDRLEN +
6288 sizeof(mgmt.u.deauth));
6289 }
6290
6291
6292 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6293 int reason)
6294 {
6295 struct i802_bss *bss = priv;
6296 struct ieee80211_mgmt mgmt;
6297
6298 memset(&mgmt, 0, sizeof(mgmt));
6299 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6300 WLAN_FC_STYPE_DISASSOC);
6301 memcpy(mgmt.da, addr, ETH_ALEN);
6302 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6303 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6304 mgmt.u.disassoc.reason_code = host_to_le16(reason);
6305 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6306 IEEE80211_HDRLEN +
6307 sizeof(mgmt.u.disassoc));
6308 }
6309
6310 #endif /* HOSTAPD || CONFIG_AP */
6311
6312 #ifdef HOSTAPD
6313
6314 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6315 {
6316 int i;
6317 int *old;
6318
6319 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6320 ifidx);
6321 for (i = 0; i < drv->num_if_indices; i++) {
6322 if (drv->if_indices[i] == 0) {
6323 drv->if_indices[i] = ifidx;
6324 return;
6325 }
6326 }
6327
6328 if (drv->if_indices != drv->default_if_indices)
6329 old = drv->if_indices;
6330 else
6331 old = NULL;
6332
6333 drv->if_indices = os_realloc(old,
6334 sizeof(int) * (drv->num_if_indices + 1));
6335 if (!drv->if_indices) {
6336 if (!old)
6337 drv->if_indices = drv->default_if_indices;
6338 else
6339 drv->if_indices = old;
6340 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6341 "interfaces");
6342 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6343 return;
6344 } else if (!old)
6345 os_memcpy(drv->if_indices, drv->default_if_indices,
6346 sizeof(drv->default_if_indices));
6347 drv->if_indices[drv->num_if_indices] = ifidx;
6348 drv->num_if_indices++;
6349 }
6350
6351
6352 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6353 {
6354 int i;
6355
6356 for (i = 0; i < drv->num_if_indices; i++) {
6357 if (drv->if_indices[i] == ifidx) {
6358 drv->if_indices[i] = 0;
6359 break;
6360 }
6361 }
6362 }
6363
6364
6365 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6366 {
6367 int i;
6368
6369 for (i = 0; i < drv->num_if_indices; i++)
6370 if (drv->if_indices[i] == ifidx)
6371 return 1;
6372
6373 return 0;
6374 }
6375
6376
6377 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6378 const char *bridge_ifname)
6379 {
6380 struct i802_bss *bss = priv;
6381 struct wpa_driver_nl80211_data *drv = bss->drv;
6382 char name[IFNAMSIZ + 1];
6383
6384 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6385 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6386 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6387 if (val) {
6388 if (!if_nametoindex(name)) {
6389 if (nl80211_create_iface(drv, name,
6390 NL80211_IFTYPE_AP_VLAN,
6391 NULL, 1) < 0)
6392 return -1;
6393 if (bridge_ifname &&
6394 linux_br_add_if(drv->global->ioctl_sock,
6395 bridge_ifname, name) < 0)
6396 return -1;
6397 }
6398 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
6399 return i802_set_sta_vlan(priv, addr, name, 0);
6400 } else {
6401 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6402 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
6403 name);
6404 }
6405 }
6406
6407
6408 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6409 {
6410 struct wpa_driver_nl80211_data *drv = eloop_ctx;
6411 struct sockaddr_ll lladdr;
6412 unsigned char buf[3000];
6413 int len;
6414 socklen_t fromlen = sizeof(lladdr);
6415
6416 len = recvfrom(sock, buf, sizeof(buf), 0,
6417 (struct sockaddr *)&lladdr, &fromlen);
6418 if (len < 0) {
6419 perror("recv");
6420 return;
6421 }
6422
6423 if (have_ifidx(drv, lladdr.sll_ifindex))
6424 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6425 }
6426
6427
6428 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6429 struct i802_bss *bss,
6430 const char *brname, const char *ifname)
6431 {
6432 int ifindex;
6433 char in_br[IFNAMSIZ];
6434
6435 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6436 ifindex = if_nametoindex(brname);
6437 if (ifindex == 0) {
6438 /*
6439 * Bridge was configured, but the bridge device does
6440 * not exist. Try to add it now.
6441 */
6442 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6443 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6444 "bridge interface %s: %s",
6445 brname, strerror(errno));
6446 return -1;
6447 }
6448 bss->added_bridge = 1;
6449 add_ifidx(drv, if_nametoindex(brname));
6450 }
6451
6452 if (linux_br_get(in_br, ifname) == 0) {
6453 if (os_strcmp(in_br, brname) == 0)
6454 return 0; /* already in the bridge */
6455
6456 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6457 "bridge %s", ifname, in_br);
6458 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6459 0) {
6460 wpa_printf(MSG_ERROR, "nl80211: Failed to "
6461 "remove interface %s from bridge "
6462 "%s: %s",
6463 ifname, brname, strerror(errno));
6464 return -1;
6465 }
6466 }
6467
6468 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6469 ifname, brname);
6470 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6471 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6472 "into bridge %s: %s",
6473 ifname, brname, strerror(errno));
6474 return -1;
6475 }
6476 bss->added_if_into_bridge = 1;
6477
6478 return 0;
6479 }
6480
6481
6482 static void *i802_init(struct hostapd_data *hapd,
6483 struct wpa_init_params *params)
6484 {
6485 struct wpa_driver_nl80211_data *drv;
6486 struct i802_bss *bss;
6487 size_t i;
6488 char brname[IFNAMSIZ];
6489 int ifindex, br_ifindex;
6490 int br_added = 0;
6491
6492 bss = wpa_driver_nl80211_init(hapd, params->ifname,
6493 params->global_priv);
6494 if (bss == NULL)
6495 return NULL;
6496
6497 drv = bss->drv;
6498 drv->nlmode = NL80211_IFTYPE_AP;
6499 drv->eapol_sock = -1;
6500
6501 if (linux_br_get(brname, params->ifname) == 0) {
6502 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6503 params->ifname, brname);
6504 br_ifindex = if_nametoindex(brname);
6505 } else {
6506 brname[0] = '\0';
6507 br_ifindex = 0;
6508 }
6509
6510 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
6511 drv->if_indices = drv->default_if_indices;
6512 for (i = 0; i < params->num_bridge; i++) {
6513 if (params->bridge[i]) {
6514 ifindex = if_nametoindex(params->bridge[i]);
6515 if (ifindex)
6516 add_ifidx(drv, ifindex);
6517 if (ifindex == br_ifindex)
6518 br_added = 1;
6519 }
6520 }
6521 if (!br_added && br_ifindex &&
6522 (params->num_bridge == 0 || !params->bridge[0]))
6523 add_ifidx(drv, br_ifindex);
6524
6525 /* start listening for EAPOL on the default AP interface */
6526 add_ifidx(drv, drv->ifindex);
6527
6528 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
6529 goto failed;
6530
6531 if (params->bssid) {
6532 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6533 params->bssid))
6534 goto failed;
6535 }
6536
6537 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
6538 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
6539 "into AP mode", bss->ifname);
6540 goto failed;
6541 }
6542
6543 if (params->num_bridge && params->bridge[0] &&
6544 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6545 goto failed;
6546
6547 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
6548 goto failed;
6549
6550 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6551 if (drv->eapol_sock < 0) {
6552 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
6553 goto failed;
6554 }
6555
6556 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6557 {
6558 printf("Could not register read socket for eapol\n");
6559 goto failed;
6560 }
6561
6562 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6563 params->own_addr))
6564 goto failed;
6565
6566 return bss;
6567
6568 failed:
6569 wpa_driver_nl80211_deinit(bss);
6570 return NULL;
6571 }
6572
6573
6574 static void i802_deinit(void *priv)
6575 {
6576 wpa_driver_nl80211_deinit(priv);
6577 }
6578
6579 #endif /* HOSTAPD */
6580
6581
6582 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6583 enum wpa_driver_if_type type)
6584 {
6585 switch (type) {
6586 case WPA_IF_STATION:
6587 return NL80211_IFTYPE_STATION;
6588 case WPA_IF_P2P_CLIENT:
6589 case WPA_IF_P2P_GROUP:
6590 return NL80211_IFTYPE_P2P_CLIENT;
6591 case WPA_IF_AP_VLAN:
6592 return NL80211_IFTYPE_AP_VLAN;
6593 case WPA_IF_AP_BSS:
6594 return NL80211_IFTYPE_AP;
6595 case WPA_IF_P2P_GO:
6596 return NL80211_IFTYPE_P2P_GO;
6597 }
6598 return -1;
6599 }
6600
6601
6602 #ifdef CONFIG_P2P
6603
6604 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6605 {
6606 struct wpa_driver_nl80211_data *drv;
6607 dl_list_for_each(drv, &global->interfaces,
6608 struct wpa_driver_nl80211_data, list) {
6609 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0)
6610 return 1;
6611 }
6612 return 0;
6613 }
6614
6615
6616 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6617 u8 *new_addr)
6618 {
6619 unsigned int idx;
6620
6621 if (!drv->global)
6622 return -1;
6623
6624 os_memcpy(new_addr, drv->addr, ETH_ALEN);
6625 for (idx = 0; idx < 64; idx++) {
6626 new_addr[0] = drv->addr[0] | 0x02;
6627 new_addr[0] ^= idx << 2;
6628 if (!nl80211_addr_in_use(drv->global, new_addr))
6629 break;
6630 }
6631 if (idx == 64)
6632 return -1;
6633
6634 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6635 MACSTR, MAC2STR(new_addr));
6636
6637 return 0;
6638 }
6639
6640 #endif /* CONFIG_P2P */
6641
6642
6643 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6644 const char *ifname, const u8 *addr,
6645 void *bss_ctx, void **drv_priv,
6646 char *force_ifname, u8 *if_addr,
6647 const char *bridge)
6648 {
6649 struct i802_bss *bss = priv;
6650 struct wpa_driver_nl80211_data *drv = bss->drv;
6651 int ifidx;
6652 #ifdef HOSTAPD
6653 struct i802_bss *new_bss = NULL;
6654
6655 if (type == WPA_IF_AP_BSS) {
6656 new_bss = os_zalloc(sizeof(*new_bss));
6657 if (new_bss == NULL)
6658 return -1;
6659 }
6660 #endif /* HOSTAPD */
6661
6662 if (addr)
6663 os_memcpy(if_addr, addr, ETH_ALEN);
6664 ifidx = nl80211_create_iface(drv, ifname,
6665 wpa_driver_nl80211_if_type(type), addr,
6666 0);
6667 if (ifidx < 0) {
6668 #ifdef HOSTAPD
6669 os_free(new_bss);
6670 #endif /* HOSTAPD */
6671 return -1;
6672 }
6673
6674 if (!addr &&
6675 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6676 if_addr) < 0) {
6677 nl80211_remove_iface(drv, ifidx);
6678 return -1;
6679 }
6680
6681 #ifdef CONFIG_P2P
6682 if (!addr &&
6683 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6684 type == WPA_IF_P2P_GO)) {
6685 /* Enforce unique P2P Interface Address */
6686 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
6687
6688 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6689 own_addr) < 0 ||
6690 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6691 new_addr) < 0) {
6692 nl80211_remove_iface(drv, ifidx);
6693 return -1;
6694 }
6695 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
6696 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6697 "for P2P group interface");
6698 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6699 nl80211_remove_iface(drv, ifidx);
6700 return -1;
6701 }
6702 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6703 new_addr) < 0) {
6704 nl80211_remove_iface(drv, ifidx);
6705 return -1;
6706 }
6707 }
6708 os_memcpy(if_addr, new_addr, ETH_ALEN);
6709 }
6710 #endif /* CONFIG_P2P */
6711
6712 #ifdef HOSTAPD
6713 if (bridge &&
6714 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6715 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6716 "interface %s to a bridge %s", ifname, bridge);
6717 nl80211_remove_iface(drv, ifidx);
6718 os_free(new_bss);
6719 return -1;
6720 }
6721
6722 if (type == WPA_IF_AP_BSS) {
6723 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6724 {
6725 nl80211_remove_iface(drv, ifidx);
6726 os_free(new_bss);
6727 return -1;
6728 }
6729 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6730 new_bss->ifindex = ifidx;
6731 new_bss->drv = drv;
6732 new_bss->next = drv->first_bss.next;
6733 drv->first_bss.next = new_bss;
6734 if (drv_priv)
6735 *drv_priv = new_bss;
6736 }
6737 #endif /* HOSTAPD */
6738
6739 if (drv->global)
6740 drv->global->if_add_ifindex = ifidx;
6741
6742 return 0;
6743 }
6744
6745
6746 static int wpa_driver_nl80211_if_remove(void *priv,
6747 enum wpa_driver_if_type type,
6748 const char *ifname)
6749 {
6750 struct i802_bss *bss = priv;
6751 struct wpa_driver_nl80211_data *drv = bss->drv;
6752 int ifindex = if_nametoindex(ifname);
6753
6754 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
6755 __func__, type, ifname, ifindex);
6756 if (ifindex <= 0)
6757 return -1;
6758
6759 #ifdef HOSTAPD
6760 if (bss->added_if_into_bridge) {
6761 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6762 bss->ifname) < 0)
6763 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6764 "interface %s from bridge %s: %s",
6765 bss->ifname, bss->brname, strerror(errno));
6766 }
6767 if (bss->added_bridge) {
6768 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6769 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6770 "bridge %s: %s",
6771 bss->brname, strerror(errno));
6772 }
6773 #endif /* HOSTAPD */
6774
6775 nl80211_remove_iface(drv, ifindex);
6776
6777 #ifdef HOSTAPD
6778 if (type != WPA_IF_AP_BSS)
6779 return 0;
6780
6781 if (bss != &drv->first_bss) {
6782 struct i802_bss *tbss;
6783
6784 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
6785 if (tbss->next == bss) {
6786 tbss->next = bss->next;
6787 os_free(bss);
6788 bss = NULL;
6789 break;
6790 }
6791 }
6792 if (bss)
6793 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6794 "BSS %p in the list", __func__, bss);
6795 }
6796 #endif /* HOSTAPD */
6797
6798 return 0;
6799 }
6800
6801
6802 static int cookie_handler(struct nl_msg *msg, void *arg)
6803 {
6804 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6805 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6806 u64 *cookie = arg;
6807 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6808 genlmsg_attrlen(gnlh, 0), NULL);
6809 if (tb[NL80211_ATTR_COOKIE])
6810 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6811 return NL_SKIP;
6812 }
6813
6814
6815 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
6816 unsigned int freq, unsigned int wait,
6817 const u8 *buf, size_t buf_len,
6818 u64 *cookie_out, int no_cck)
6819 {
6820 struct nl_msg *msg;
6821 u64 cookie;
6822 int ret = -1;
6823
6824 msg = nlmsg_alloc();
6825 if (!msg)
6826 return -1;
6827
6828 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6829
6830 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6831 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6832 if (wait)
6833 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6834 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6835 if (no_cck)
6836 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6837
6838 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6839
6840 cookie = 0;
6841 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6842 msg = NULL;
6843 if (ret) {
6844 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6845 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6846 freq, wait);
6847 goto nla_put_failure;
6848 }
6849 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
6850 "cookie 0x%llx", (long long unsigned int) cookie);
6851
6852 if (cookie_out)
6853 *cookie_out = cookie;
6854
6855 nla_put_failure:
6856 nlmsg_free(msg);
6857 return ret;
6858 }
6859
6860
6861 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
6862 unsigned int wait_time,
6863 const u8 *dst, const u8 *src,
6864 const u8 *bssid,
6865 const u8 *data, size_t data_len,
6866 int no_cck)
6867 {
6868 struct i802_bss *bss = priv;
6869 struct wpa_driver_nl80211_data *drv = bss->drv;
6870 int ret = -1;
6871 u8 *buf;
6872 struct ieee80211_hdr *hdr;
6873
6874 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6875 "wait=%d ms no_cck=%d)", drv->ifindex, wait_time, no_cck);
6876
6877 buf = os_zalloc(24 + data_len);
6878 if (buf == NULL)
6879 return ret;
6880 os_memcpy(buf + 24, data, data_len);
6881 hdr = (struct ieee80211_hdr *) buf;
6882 hdr->frame_control =
6883 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6884 os_memcpy(hdr->addr1, dst, ETH_ALEN);
6885 os_memcpy(hdr->addr2, src, ETH_ALEN);
6886 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6887
6888 if (is_ap_interface(drv->nlmode))
6889 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
6890 else
6891 ret = nl80211_send_frame_cmd(drv, freq, wait_time, buf,
6892 24 + data_len,
6893 &drv->send_action_cookie,
6894 no_cck);
6895
6896 os_free(buf);
6897 return ret;
6898 }
6899
6900
6901 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6902 {
6903 struct i802_bss *bss = priv;
6904 struct wpa_driver_nl80211_data *drv = bss->drv;
6905 struct nl_msg *msg;
6906 int ret;
6907
6908 msg = nlmsg_alloc();
6909 if (!msg)
6910 return;
6911
6912 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6913
6914 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6915 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6916
6917 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6918 msg = NULL;
6919 if (ret)
6920 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6921 "(%s)", ret, strerror(-ret));
6922
6923 nla_put_failure:
6924 nlmsg_free(msg);
6925 }
6926
6927
6928 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6929 unsigned int duration)
6930 {
6931 struct i802_bss *bss = priv;
6932 struct wpa_driver_nl80211_data *drv = bss->drv;
6933 struct nl_msg *msg;
6934 int ret;
6935 u64 cookie;
6936
6937 msg = nlmsg_alloc();
6938 if (!msg)
6939 return -1;
6940
6941 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6942
6943 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6944 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6945 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6946
6947 cookie = 0;
6948 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6949 if (ret == 0) {
6950 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6951 "0x%llx for freq=%u MHz duration=%u",
6952 (long long unsigned int) cookie, freq, duration);
6953 drv->remain_on_chan_cookie = cookie;
6954 drv->pending_remain_on_chan = 1;
6955 return 0;
6956 }
6957 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6958 "(freq=%d duration=%u): %d (%s)",
6959 freq, duration, ret, strerror(-ret));
6960 nla_put_failure:
6961 return -1;
6962 }
6963
6964
6965 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6966 {
6967 struct i802_bss *bss = priv;
6968 struct wpa_driver_nl80211_data *drv = bss->drv;
6969 struct nl_msg *msg;
6970 int ret;
6971
6972 if (!drv->pending_remain_on_chan) {
6973 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6974 "to cancel");
6975 return -1;
6976 }
6977
6978 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6979 "0x%llx",
6980 (long long unsigned int) drv->remain_on_chan_cookie);
6981
6982 msg = nlmsg_alloc();
6983 if (!msg)
6984 return -1;
6985
6986 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6987
6988 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6989 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
6990
6991 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6992 if (ret == 0)
6993 return 0;
6994 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6995 "%d (%s)", ret, strerror(-ret));
6996 nla_put_failure:
6997 return -1;
6998 }
6999
7000
7001 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
7002 {
7003 struct i802_bss *bss = priv;
7004 struct wpa_driver_nl80211_data *drv = bss->drv;
7005
7006 if (!report) {
7007 if (drv->nl_preq.handle) {
7008 eloop_unregister_read_sock(
7009 nl_socket_get_fd(drv->nl_preq.handle));
7010 nl_destroy_handles(&drv->nl_preq);
7011 }
7012 return 0;
7013 }
7014
7015 if (drv->nl_preq.handle) {
7016 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7017 "already on!");
7018 return 0;
7019 }
7020
7021 if (nl_create_handles(&drv->nl_preq, drv->global->nl_cb, "preq"))
7022 return -1;
7023
7024 if (nl80211_register_frame(drv, drv->nl_preq.handle,
7025 (WLAN_FC_TYPE_MGMT << 2) |
7026 (WLAN_FC_STYPE_PROBE_REQ << 4),
7027 NULL, 0) < 0)
7028 goto out_err;
7029
7030 eloop_register_read_sock(nl_socket_get_fd(drv->nl_preq.handle),
7031 wpa_driver_nl80211_event_receive, drv,
7032 drv->nl_preq.handle);
7033
7034 return 0;
7035
7036 out_err:
7037 nl_destroy_handles(&drv->nl_preq);
7038 return -1;
7039 }
7040
7041
7042 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7043 int ifindex, int disabled)
7044 {
7045 struct nl_msg *msg;
7046 struct nlattr *bands, *band;
7047 int ret;
7048
7049 msg = nlmsg_alloc();
7050 if (!msg)
7051 return -1;
7052
7053 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7054 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7055
7056 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7057 if (!bands)
7058 goto nla_put_failure;
7059
7060 /*
7061 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7062 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7063 * rates. All 5 GHz rates are left enabled.
7064 */
7065 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7066 if (!band)
7067 goto nla_put_failure;
7068 if (disabled) {
7069 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7070 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7071 }
7072 nla_nest_end(msg, band);
7073
7074 nla_nest_end(msg, bands);
7075
7076 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7077 msg = NULL;
7078 if (ret) {
7079 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7080 "(%s)", ret, strerror(-ret));
7081 }
7082
7083 return ret;
7084
7085 nla_put_failure:
7086 nlmsg_free(msg);
7087 return -1;
7088 }
7089
7090
7091 static int wpa_driver_nl80211_deinit_ap(void *priv)
7092 {
7093 struct i802_bss *bss = priv;
7094 struct wpa_driver_nl80211_data *drv = bss->drv;
7095 if (!is_ap_interface(drv->nlmode))
7096 return -1;
7097 wpa_driver_nl80211_del_beacon(drv);
7098 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7099 }
7100
7101
7102 static void wpa_driver_nl80211_resume(void *priv)
7103 {
7104 struct i802_bss *bss = priv;
7105 struct wpa_driver_nl80211_data *drv = bss->drv;
7106 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
7107 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
7108 "resume event");
7109 }
7110 }
7111
7112
7113 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7114 const u8 *ies, size_t ies_len)
7115 {
7116 struct i802_bss *bss = priv;
7117 struct wpa_driver_nl80211_data *drv = bss->drv;
7118 int ret;
7119 u8 *data, *pos;
7120 size_t data_len;
7121 u8 own_addr[ETH_ALEN];
7122
7123 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7124 own_addr) < 0)
7125 return -1;
7126
7127 if (action != 1) {
7128 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7129 "action %d", action);
7130 return -1;
7131 }
7132
7133 /*
7134 * Action frame payload:
7135 * Category[1] = 6 (Fast BSS Transition)
7136 * Action[1] = 1 (Fast BSS Transition Request)
7137 * STA Address
7138 * Target AP Address
7139 * FT IEs
7140 */
7141
7142 data_len = 2 + 2 * ETH_ALEN + ies_len;
7143 data = os_malloc(data_len);
7144 if (data == NULL)
7145 return -1;
7146 pos = data;
7147 *pos++ = 0x06; /* FT Action category */
7148 *pos++ = action;
7149 os_memcpy(pos, own_addr, ETH_ALEN);
7150 pos += ETH_ALEN;
7151 os_memcpy(pos, target_ap, ETH_ALEN);
7152 pos += ETH_ALEN;
7153 os_memcpy(pos, ies, ies_len);
7154
7155 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7156 drv->bssid, own_addr, drv->bssid,
7157 data, data_len, 0);
7158 os_free(data);
7159
7160 return ret;
7161 }
7162
7163
7164 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7165 {
7166 struct i802_bss *bss = priv;
7167 struct wpa_driver_nl80211_data *drv = bss->drv;
7168 struct nl_msg *msg, *cqm = NULL;
7169
7170 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7171 "hysteresis=%d", threshold, hysteresis);
7172
7173 msg = nlmsg_alloc();
7174 if (!msg)
7175 return -1;
7176
7177 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7178
7179 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7180
7181 cqm = nlmsg_alloc();
7182 if (cqm == NULL)
7183 return -1;
7184
7185 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7186 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7187 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
7188
7189 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7190 return 0;
7191 msg = NULL;
7192
7193 nla_put_failure:
7194 if (cqm)
7195 nlmsg_free(cqm);
7196 nlmsg_free(msg);
7197 return -1;
7198 }
7199
7200
7201 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7202 {
7203 struct i802_bss *bss = priv;
7204 struct wpa_driver_nl80211_data *drv = bss->drv;
7205 int res;
7206
7207 os_memset(si, 0, sizeof(*si));
7208 res = nl80211_get_link_signal(drv, si);
7209 if (res != 0)
7210 return res;
7211
7212 return nl80211_get_link_noise(drv, si);
7213 }
7214
7215
7216 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7217 int encrypt)
7218 {
7219 struct i802_bss *bss = priv;
7220 struct wpa_driver_nl80211_data *drv = bss->drv;
7221 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
7222 }
7223
7224
7225 static int nl80211_set_param(void *priv, const char *param)
7226 {
7227 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7228 if (param == NULL)
7229 return 0;
7230
7231 #ifdef CONFIG_P2P
7232 if (os_strstr(param, "use_p2p_group_interface=1")) {
7233 struct i802_bss *bss = priv;
7234 struct wpa_driver_nl80211_data *drv = bss->drv;
7235
7236 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7237 "interface");
7238 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7239 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7240 }
7241 #endif /* CONFIG_P2P */
7242
7243 return 0;
7244 }
7245
7246
7247 static void * nl80211_global_init(void)
7248 {
7249 struct nl80211_global *global;
7250 struct netlink_config *cfg;
7251
7252 global = os_zalloc(sizeof(*global));
7253 if (global == NULL)
7254 return NULL;
7255 global->ioctl_sock = -1;
7256 dl_list_init(&global->interfaces);
7257 global->if_add_ifindex = -1;
7258
7259 cfg = os_zalloc(sizeof(*cfg));
7260 if (cfg == NULL)
7261 goto err;
7262
7263 cfg->ctx = global;
7264 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7265 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7266 global->netlink = netlink_init(cfg);
7267 if (global->netlink == NULL) {
7268 os_free(cfg);
7269 goto err;
7270 }
7271
7272 if (wpa_driver_nl80211_init_nl_global(global) < 0)
7273 goto err;
7274
7275 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7276 if (global->ioctl_sock < 0) {
7277 perror("socket(PF_INET,SOCK_DGRAM)");
7278 goto err;
7279 }
7280
7281 return global;
7282
7283 err:
7284 nl80211_global_deinit(global);
7285 return NULL;
7286 }
7287
7288
7289 static void nl80211_global_deinit(void *priv)
7290 {
7291 struct nl80211_global *global = priv;
7292 if (global == NULL)
7293 return;
7294 if (!dl_list_empty(&global->interfaces)) {
7295 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7296 "nl80211_global_deinit",
7297 dl_list_len(&global->interfaces));
7298 }
7299
7300 if (global->netlink)
7301 netlink_deinit(global->netlink);
7302
7303 nl_destroy_handles(&global->nl);
7304
7305 if (global->nl_cb)
7306 nl_cb_put(global->nl_cb);
7307
7308 if (global->ioctl_sock >= 0)
7309 close(global->ioctl_sock);
7310
7311 os_free(global);
7312 }
7313
7314
7315 static const char * nl80211_get_radio_name(void *priv)
7316 {
7317 struct i802_bss *bss = priv;
7318 struct wpa_driver_nl80211_data *drv = bss->drv;
7319 return drv->phyname;
7320 }
7321
7322
7323 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7324 const u8 *pmkid)
7325 {
7326 struct nl_msg *msg;
7327
7328 msg = nlmsg_alloc();
7329 if (!msg)
7330 return -ENOMEM;
7331
7332 nl80211_cmd(bss->drv, msg, 0, cmd);
7333
7334 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7335 if (pmkid)
7336 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7337 if (bssid)
7338 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7339
7340 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7341 nla_put_failure:
7342 return -ENOBUFS;
7343 }
7344
7345
7346 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7347 {
7348 struct i802_bss *bss = priv;
7349 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7350 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7351 }
7352
7353
7354 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7355 {
7356 struct i802_bss *bss = priv;
7357 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7358 MAC2STR(bssid));
7359 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7360 }
7361
7362
7363 static int nl80211_flush_pmkid(void *priv)
7364 {
7365 struct i802_bss *bss = priv;
7366 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7367 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7368 }
7369
7370
7371 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7372 const u8 *replay_ctr)
7373 {
7374 struct i802_bss *bss = priv;
7375 struct wpa_driver_nl80211_data *drv = bss->drv;
7376 struct nlattr *replay_nested;
7377 struct nl_msg *msg;
7378
7379 msg = nlmsg_alloc();
7380 if (!msg)
7381 return;
7382
7383 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7384
7385 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7386
7387 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7388 if (!replay_nested)
7389 goto nla_put_failure;
7390
7391 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7392 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7393 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7394 replay_ctr);
7395
7396 nla_nest_end(msg, replay_nested);
7397
7398 send_and_recv_msgs(drv, msg, NULL, NULL);
7399 return;
7400 nla_put_failure:
7401 nlmsg_free(msg);
7402 }
7403
7404
7405 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7406 int qos)
7407 {
7408 struct i802_bss *bss = priv;
7409 struct {
7410 struct ieee80211_hdr hdr;
7411 u16 qos_ctl;
7412 } STRUCT_PACKED nulldata;
7413 size_t size;
7414
7415 /* Send data frame to poll STA and check whether this frame is ACKed */
7416
7417 os_memset(&nulldata, 0, sizeof(nulldata));
7418
7419 if (qos) {
7420 nulldata.hdr.frame_control =
7421 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7422 WLAN_FC_STYPE_QOS_NULL);
7423 size = sizeof(nulldata);
7424 } else {
7425 nulldata.hdr.frame_control =
7426 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7427 WLAN_FC_STYPE_NULLFUNC);
7428 size = sizeof(struct ieee80211_hdr);
7429 }
7430
7431 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7432 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7433 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7434 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7435
7436 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size) < 0)
7437 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7438 "send poll frame");
7439 }
7440
7441
7442 #ifdef CONFIG_TDLS
7443
7444 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7445 u8 dialog_token, u16 status_code,
7446 const u8 *buf, size_t len)
7447 {
7448 struct i802_bss *bss = priv;
7449 struct wpa_driver_nl80211_data *drv = bss->drv;
7450 struct nl_msg *msg;
7451
7452 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7453 return -EOPNOTSUPP;
7454
7455 if (!dst)
7456 return -EINVAL;
7457
7458 msg = nlmsg_alloc();
7459 if (!msg)
7460 return -ENOMEM;
7461
7462 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7463 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7464 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7465 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7466 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7467 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7468 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7469
7470 return send_and_recv_msgs(drv, msg, NULL, NULL);
7471
7472 nla_put_failure:
7473 nlmsg_free(msg);
7474 return -ENOBUFS;
7475 }
7476
7477
7478 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7479 {
7480 struct i802_bss *bss = priv;
7481 struct wpa_driver_nl80211_data *drv = bss->drv;
7482 struct nl_msg *msg;
7483 enum nl80211_tdls_operation nl80211_oper;
7484
7485 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7486 return -EOPNOTSUPP;
7487
7488 switch (oper) {
7489 case TDLS_DISCOVERY_REQ:
7490 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7491 break;
7492 case TDLS_SETUP:
7493 nl80211_oper = NL80211_TDLS_SETUP;
7494 break;
7495 case TDLS_TEARDOWN:
7496 nl80211_oper = NL80211_TDLS_TEARDOWN;
7497 break;
7498 case TDLS_ENABLE_LINK:
7499 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7500 break;
7501 case TDLS_DISABLE_LINK:
7502 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7503 break;
7504 case TDLS_ENABLE:
7505 return 0;
7506 case TDLS_DISABLE:
7507 return 0;
7508 default:
7509 return -EINVAL;
7510 }
7511
7512 msg = nlmsg_alloc();
7513 if (!msg)
7514 return -ENOMEM;
7515
7516 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
7517 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
7518 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7519 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7520
7521 return send_and_recv_msgs(drv, msg, NULL, NULL);
7522
7523 nla_put_failure:
7524 nlmsg_free(msg);
7525 return -ENOBUFS;
7526 }
7527
7528 #endif /* CONFIG TDLS */
7529
7530
7531 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
7532 .name = "nl80211",
7533 .desc = "Linux nl80211/cfg80211",
7534 .get_bssid = wpa_driver_nl80211_get_bssid,
7535 .get_ssid = wpa_driver_nl80211_get_ssid,
7536 .set_key = wpa_driver_nl80211_set_key,
7537 .scan2 = wpa_driver_nl80211_scan,
7538 .sched_scan = wpa_driver_nl80211_sched_scan,
7539 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
7540 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
7541 .deauthenticate = wpa_driver_nl80211_deauthenticate,
7542 .disassociate = wpa_driver_nl80211_disassociate,
7543 .authenticate = wpa_driver_nl80211_authenticate,
7544 .associate = wpa_driver_nl80211_associate,
7545 .global_init = nl80211_global_init,
7546 .global_deinit = nl80211_global_deinit,
7547 .init2 = wpa_driver_nl80211_init,
7548 .deinit = wpa_driver_nl80211_deinit,
7549 .get_capa = wpa_driver_nl80211_get_capa,
7550 .set_operstate = wpa_driver_nl80211_set_operstate,
7551 .set_supp_port = wpa_driver_nl80211_set_supp_port,
7552 .set_country = wpa_driver_nl80211_set_country,
7553 .set_ap = wpa_driver_nl80211_set_ap,
7554 .if_add = wpa_driver_nl80211_if_add,
7555 .if_remove = wpa_driver_nl80211_if_remove,
7556 .send_mlme = wpa_driver_nl80211_send_mlme,
7557 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
7558 .sta_add = wpa_driver_nl80211_sta_add,
7559 .sta_remove = wpa_driver_nl80211_sta_remove,
7560 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
7561 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
7562 #ifdef HOSTAPD
7563 .hapd_init = i802_init,
7564 .hapd_deinit = i802_deinit,
7565 .set_wds_sta = i802_set_wds_sta,
7566 #endif /* HOSTAPD */
7567 #if defined(HOSTAPD) || defined(CONFIG_AP)
7568 .get_seqnum = i802_get_seqnum,
7569 .flush = i802_flush,
7570 .read_sta_data = i802_read_sta_data,
7571 .get_inact_sec = i802_get_inact_sec,
7572 .sta_clear_stats = i802_sta_clear_stats,
7573 .set_rts = i802_set_rts,
7574 .set_frag = i802_set_frag,
7575 .set_tx_queue_params = i802_set_tx_queue_params,
7576 .set_sta_vlan = i802_set_sta_vlan,
7577 .set_rate_sets = i802_set_rate_sets,
7578 .sta_deauth = i802_sta_deauth,
7579 .sta_disassoc = i802_sta_disassoc,
7580 #endif /* HOSTAPD || CONFIG_AP */
7581 .set_freq = i802_set_freq,
7582 .send_action = wpa_driver_nl80211_send_action,
7583 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
7584 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
7585 .cancel_remain_on_channel =
7586 wpa_driver_nl80211_cancel_remain_on_channel,
7587 .probe_req_report = wpa_driver_nl80211_probe_req_report,
7588 .deinit_ap = wpa_driver_nl80211_deinit_ap,
7589 .resume = wpa_driver_nl80211_resume,
7590 .send_ft_action = nl80211_send_ft_action,
7591 .signal_monitor = nl80211_signal_monitor,
7592 .signal_poll = nl80211_signal_poll,
7593 .send_frame = nl80211_send_frame,
7594 .set_param = nl80211_set_param,
7595 .get_radio_name = nl80211_get_radio_name,
7596 .add_pmkid = nl80211_add_pmkid,
7597 .remove_pmkid = nl80211_remove_pmkid,
7598 .flush_pmkid = nl80211_flush_pmkid,
7599 .set_rekey_info = nl80211_set_rekey_info,
7600 .poll_client = nl80211_poll_client,
7601 #ifdef CONFIG_TDLS
7602 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
7603 .tdls_oper = nl80211_tdls_oper,
7604 #endif /* CONFIG_TDLS */
7605 };
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