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nl80211: Implement deauth/disassoc for non-HOSTAPD case
[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 "netlink.h"
38 #include "linux_ioctl.h"
39 #include "radiotap.h"
40 #include "radiotap_iter.h"
41 #include "rfkill.h"
42 #include "driver.h"
43
44 #ifdef CONFIG_LIBNL20
45 /* libnl 2.0 compatibility code */
46 #define nl_handle nl_sock
47 #define nl80211_handle_alloc nl_socket_alloc_cb
48 #define nl80211_handle_destroy nl_socket_free
49 #else
50 /*
51 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
52 * but when you free a socket again it will mess up its bitmap and
53 * and use the wrong number the next time it needs a socket ID.
54 * Therefore, we wrap the handle alloc/destroy and add our own pid
55 * accounting.
56 */
57 static uint32_t port_bitmap[32] = { 0 };
58
59 static struct nl_handle *nl80211_handle_alloc(void *cb)
60 {
61 struct nl_handle *handle;
62 uint32_t pid = getpid() & 0x3FFFFF;
63 int i;
64
65 handle = nl_handle_alloc_cb(cb);
66
67 for (i = 0; i < 1024; i++) {
68 if (port_bitmap[i / 32] & (1 << (i % 32)))
69 continue;
70 port_bitmap[i / 32] |= 1 << (i % 32);
71 pid += i << 22;
72 break;
73 }
74
75 nl_socket_set_local_port(handle, pid);
76
77 return handle;
78 }
79
80 static void nl80211_handle_destroy(struct nl_handle *handle)
81 {
82 uint32_t port = nl_socket_get_local_port(handle);
83
84 port >>= 22;
85 port_bitmap[port / 32] &= ~(1 << (port % 32));
86
87 nl_handle_destroy(handle);
88 }
89 #endif /* CONFIG_LIBNL20 */
90
91
92 #ifndef IFF_LOWER_UP
93 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
94 #endif
95 #ifndef IFF_DORMANT
96 #define IFF_DORMANT 0x20000 /* driver signals dormant */
97 #endif
98
99 #ifndef IF_OPER_DORMANT
100 #define IF_OPER_DORMANT 5
101 #endif
102 #ifndef IF_OPER_UP
103 #define IF_OPER_UP 6
104 #endif
105
106 struct nl80211_global {
107 struct dl_list interfaces;
108 };
109
110 struct i802_bss {
111 struct wpa_driver_nl80211_data *drv;
112 struct i802_bss *next;
113 int ifindex;
114 char ifname[IFNAMSIZ + 1];
115 char brname[IFNAMSIZ];
116 unsigned int beacon_set:1;
117 unsigned int added_if_into_bridge:1;
118 unsigned int added_bridge:1;
119 };
120
121 struct wpa_driver_nl80211_data {
122 struct nl80211_global *global;
123 struct dl_list list;
124 u8 addr[ETH_ALEN];
125 char phyname[32];
126 void *ctx;
127 struct netlink_data *netlink;
128 int ioctl_sock; /* socket for ioctl() use */
129 int ifindex;
130 int if_removed;
131 int if_disabled;
132 struct rfkill_data *rfkill;
133 struct wpa_driver_capa capa;
134 int has_capability;
135
136 int operstate;
137
138 int scan_complete_events;
139
140 struct nl_handle *nl_handle;
141 struct nl_handle *nl_handle_event;
142 struct nl_handle *nl_handle_preq;
143 struct nl_cache *nl_cache;
144 struct nl_cache *nl_cache_event;
145 struct nl_cache *nl_cache_preq;
146 struct nl_cb *nl_cb;
147 struct genl_family *nl80211;
148
149 u8 auth_bssid[ETH_ALEN];
150 u8 bssid[ETH_ALEN];
151 int associated;
152 u8 ssid[32];
153 size_t ssid_len;
154 int nlmode;
155 int ap_scan_as_station;
156 unsigned int assoc_freq;
157
158 int monitor_sock;
159 int monitor_ifidx;
160 int disable_11b_rates;
161
162 unsigned int pending_remain_on_chan:1;
163
164 u64 remain_on_chan_cookie;
165 u64 send_action_cookie;
166
167 unsigned int last_mgmt_freq;
168
169 struct wpa_driver_scan_filter *filter_ssids;
170 size_t num_filter_ssids;
171
172 struct i802_bss first_bss;
173
174 #ifdef HOSTAPD
175 int eapol_sock; /* socket for EAPOL frames */
176
177 int default_if_indices[16];
178 int *if_indices;
179 int num_if_indices;
180
181 int last_freq;
182 int last_freq_ht;
183 #endif /* HOSTAPD */
184 };
185
186
187 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
188 void *timeout_ctx);
189 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
190 static int
191 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
192 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
193 const u8 *addr, int cmd, u16 reason_code,
194 int local_state_change);
195 static void nl80211_remove_monitor_interface(
196 struct wpa_driver_nl80211_data *drv);
197 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
198 unsigned int freq, unsigned int wait,
199 const u8 *buf, size_t buf_len, u64 *cookie);
200 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
201
202 #ifdef HOSTAPD
203 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
204 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
205 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
206 static int wpa_driver_nl80211_if_remove(void *priv,
207 enum wpa_driver_if_type type,
208 const char *ifname);
209 #else /* HOSTAPD */
210 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
211 {
212 return 0;
213 }
214 #endif /* HOSTAPD */
215
216 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
217 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
218 int ifindex, int disabled);
219
220
221 /* nl80211 code */
222 static int ack_handler(struct nl_msg *msg, void *arg)
223 {
224 int *err = arg;
225 *err = 0;
226 return NL_STOP;
227 }
228
229 static int finish_handler(struct nl_msg *msg, void *arg)
230 {
231 int *ret = arg;
232 *ret = 0;
233 return NL_SKIP;
234 }
235
236 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
237 void *arg)
238 {
239 int *ret = arg;
240 *ret = err->error;
241 return NL_SKIP;
242 }
243
244
245 static int no_seq_check(struct nl_msg *msg, void *arg)
246 {
247 return NL_OK;
248 }
249
250
251 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
252 struct nl_handle *nl_handle, struct nl_msg *msg,
253 int (*valid_handler)(struct nl_msg *, void *),
254 void *valid_data)
255 {
256 struct nl_cb *cb;
257 int err = -ENOMEM;
258
259 cb = nl_cb_clone(drv->nl_cb);
260 if (!cb)
261 goto out;
262
263 err = nl_send_auto_complete(nl_handle, msg);
264 if (err < 0)
265 goto out;
266
267 err = 1;
268
269 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
270 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
271 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
272
273 if (valid_handler)
274 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
275 valid_handler, valid_data);
276
277 while (err > 0)
278 nl_recvmsgs(nl_handle, cb);
279 out:
280 nl_cb_put(cb);
281 nlmsg_free(msg);
282 return err;
283 }
284
285
286 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
287 struct nl_msg *msg,
288 int (*valid_handler)(struct nl_msg *, void *),
289 void *valid_data)
290 {
291 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
292 valid_data);
293 }
294
295
296 struct family_data {
297 const char *group;
298 int id;
299 };
300
301
302 static int family_handler(struct nl_msg *msg, void *arg)
303 {
304 struct family_data *res = arg;
305 struct nlattr *tb[CTRL_ATTR_MAX + 1];
306 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
307 struct nlattr *mcgrp;
308 int i;
309
310 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
311 genlmsg_attrlen(gnlh, 0), NULL);
312 if (!tb[CTRL_ATTR_MCAST_GROUPS])
313 return NL_SKIP;
314
315 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
316 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
317 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
318 nla_len(mcgrp), NULL);
319 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
320 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
321 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
322 res->group,
323 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
324 continue;
325 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
326 break;
327 };
328
329 return NL_SKIP;
330 }
331
332
333 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
334 const char *family, const char *group)
335 {
336 struct nl_msg *msg;
337 int ret = -1;
338 struct family_data res = { group, -ENOENT };
339
340 msg = nlmsg_alloc();
341 if (!msg)
342 return -ENOMEM;
343 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
344 0, 0, CTRL_CMD_GETFAMILY, 0);
345 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
346
347 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
348 msg = NULL;
349 if (ret == 0)
350 ret = res.id;
351
352 nla_put_failure:
353 nlmsg_free(msg);
354 return ret;
355 }
356
357
358 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
359 {
360 struct i802_bss *bss = priv;
361 struct wpa_driver_nl80211_data *drv = bss->drv;
362 if (!drv->associated)
363 return -1;
364 os_memcpy(bssid, drv->bssid, ETH_ALEN);
365 return 0;
366 }
367
368
369 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
370 {
371 struct i802_bss *bss = priv;
372 struct wpa_driver_nl80211_data *drv = bss->drv;
373 if (!drv->associated)
374 return -1;
375 os_memcpy(ssid, drv->ssid, drv->ssid_len);
376 return drv->ssid_len;
377 }
378
379
380 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
381 char *buf, size_t len, int del)
382 {
383 union wpa_event_data event;
384
385 os_memset(&event, 0, sizeof(event));
386 if (len > sizeof(event.interface_status.ifname))
387 len = sizeof(event.interface_status.ifname) - 1;
388 os_memcpy(event.interface_status.ifname, buf, len);
389 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
390 EVENT_INTERFACE_ADDED;
391
392 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
393 del ? "DEL" : "NEW",
394 event.interface_status.ifname,
395 del ? "removed" : "added");
396
397 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
398 if (del)
399 drv->if_removed = 1;
400 else
401 drv->if_removed = 0;
402 }
403
404 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
405 }
406
407
408 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
409 u8 *buf, size_t len)
410 {
411 int attrlen, rta_len;
412 struct rtattr *attr;
413
414 attrlen = len;
415 attr = (struct rtattr *) buf;
416
417 rta_len = RTA_ALIGN(sizeof(struct rtattr));
418 while (RTA_OK(attr, attrlen)) {
419 if (attr->rta_type == IFLA_IFNAME) {
420 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
421 == 0)
422 return 1;
423 else
424 break;
425 }
426 attr = RTA_NEXT(attr, attrlen);
427 }
428
429 return 0;
430 }
431
432
433 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
434 int ifindex, u8 *buf, size_t len)
435 {
436 if (drv->ifindex == ifindex)
437 return 1;
438
439 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
440 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
441 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
442 "interface");
443 wpa_driver_nl80211_finish_drv_init(drv);
444 return 1;
445 }
446
447 return 0;
448 }
449
450
451 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
452 struct ifinfomsg *ifi,
453 u8 *buf, size_t len)
454 {
455 struct wpa_driver_nl80211_data *drv = ctx;
456 int attrlen, rta_len;
457 struct rtattr *attr;
458 u32 brid = 0;
459
460 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
461 !have_ifidx(drv, ifi->ifi_index)) {
462 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
463 "ifindex %d", ifi->ifi_index);
464 return;
465 }
466
467 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
468 "(%s%s%s%s)",
469 drv->operstate, ifi->ifi_flags,
470 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
471 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
472 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
473 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
474
475 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
476 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
477 drv->if_disabled = 1;
478 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
479 }
480
481 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
482 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
483 drv->if_disabled = 0;
484 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
485 }
486
487 /*
488 * Some drivers send the association event before the operup event--in
489 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
490 * fails. This will hit us when wpa_supplicant does not need to do
491 * IEEE 802.1X authentication
492 */
493 if (drv->operstate == 1 &&
494 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
495 !(ifi->ifi_flags & IFF_RUNNING))
496 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
497 -1, IF_OPER_UP);
498
499 attrlen = len;
500 attr = (struct rtattr *) buf;
501 rta_len = RTA_ALIGN(sizeof(struct rtattr));
502 while (RTA_OK(attr, attrlen)) {
503 if (attr->rta_type == IFLA_IFNAME) {
504 wpa_driver_nl80211_event_link(
505 drv,
506 ((char *) attr) + rta_len,
507 attr->rta_len - rta_len, 0);
508 } else if (attr->rta_type == IFLA_MASTER)
509 brid = nla_get_u32((struct nlattr *) attr);
510 attr = RTA_NEXT(attr, attrlen);
511 }
512
513 #ifdef HOSTAPD
514 if (ifi->ifi_family == AF_BRIDGE && brid) {
515 /* device has been added to bridge */
516 char namebuf[IFNAMSIZ];
517 if_indextoname(brid, namebuf);
518 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
519 brid, namebuf);
520 add_ifidx(drv, brid);
521 }
522 #endif /* HOSTAPD */
523 }
524
525
526 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
527 struct ifinfomsg *ifi,
528 u8 *buf, size_t len)
529 {
530 struct wpa_driver_nl80211_data *drv = ctx;
531 int attrlen, rta_len;
532 struct rtattr *attr;
533 u32 brid = 0;
534
535 attrlen = len;
536 attr = (struct rtattr *) buf;
537
538 rta_len = RTA_ALIGN(sizeof(struct rtattr));
539 while (RTA_OK(attr, attrlen)) {
540 if (attr->rta_type == IFLA_IFNAME) {
541 wpa_driver_nl80211_event_link(
542 drv,
543 ((char *) attr) + rta_len,
544 attr->rta_len - rta_len, 1);
545 } else if (attr->rta_type == IFLA_MASTER)
546 brid = nla_get_u32((struct nlattr *) attr);
547 attr = RTA_NEXT(attr, attrlen);
548 }
549
550 #ifdef HOSTAPD
551 if (ifi->ifi_family == AF_BRIDGE && brid) {
552 /* device has been removed from bridge */
553 char namebuf[IFNAMSIZ];
554 if_indextoname(brid, namebuf);
555 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
556 "%s", brid, namebuf);
557 del_ifidx(drv, brid);
558 }
559 #endif /* HOSTAPD */
560 }
561
562
563 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
564 const u8 *frame, size_t len)
565 {
566 const struct ieee80211_mgmt *mgmt;
567 union wpa_event_data event;
568
569 mgmt = (const struct ieee80211_mgmt *) frame;
570 if (len < 24 + sizeof(mgmt->u.auth)) {
571 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
572 "frame");
573 return;
574 }
575
576 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
577 os_memset(&event, 0, sizeof(event));
578 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
579 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
580 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
581 if (len > 24 + sizeof(mgmt->u.auth)) {
582 event.auth.ies = mgmt->u.auth.variable;
583 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
584 }
585
586 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
587 }
588
589
590 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
591 const u8 *frame, size_t len)
592 {
593 const struct ieee80211_mgmt *mgmt;
594 union wpa_event_data event;
595 u16 status;
596
597 mgmt = (const struct ieee80211_mgmt *) frame;
598 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
599 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
600 "frame");
601 return;
602 }
603
604 status = le_to_host16(mgmt->u.assoc_resp.status_code);
605 if (status != WLAN_STATUS_SUCCESS) {
606 os_memset(&event, 0, sizeof(event));
607 event.assoc_reject.bssid = mgmt->bssid;
608 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
609 event.assoc_reject.resp_ies =
610 (u8 *) mgmt->u.assoc_resp.variable;
611 event.assoc_reject.resp_ies_len =
612 len - 24 - sizeof(mgmt->u.assoc_resp);
613 }
614 event.assoc_reject.status_code = status;
615
616 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
617 return;
618 }
619
620 drv->associated = 1;
621 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
622
623 os_memset(&event, 0, sizeof(event));
624 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
625 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
626 event.assoc_info.resp_ies_len =
627 len - 24 - sizeof(mgmt->u.assoc_resp);
628 }
629
630 event.assoc_info.freq = drv->assoc_freq;
631
632 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
633 }
634
635
636 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
637 enum nl80211_commands cmd, struct nlattr *status,
638 struct nlattr *addr, struct nlattr *req_ie,
639 struct nlattr *resp_ie)
640 {
641 union wpa_event_data event;
642
643 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
644 /*
645 * Avoid reporting two association events that would confuse
646 * the core code.
647 */
648 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
649 "when using userspace SME", cmd);
650 return;
651 }
652
653 os_memset(&event, 0, sizeof(event));
654 if (cmd == NL80211_CMD_CONNECT &&
655 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
656 if (addr)
657 event.assoc_reject.bssid = nla_data(addr);
658 if (resp_ie) {
659 event.assoc_reject.resp_ies = nla_data(resp_ie);
660 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
661 }
662 event.assoc_reject.status_code = nla_get_u16(status);
663 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
664 return;
665 }
666
667 drv->associated = 1;
668 if (addr)
669 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
670
671 if (req_ie) {
672 event.assoc_info.req_ies = nla_data(req_ie);
673 event.assoc_info.req_ies_len = nla_len(req_ie);
674 }
675 if (resp_ie) {
676 event.assoc_info.resp_ies = nla_data(resp_ie);
677 event.assoc_info.resp_ies_len = nla_len(resp_ie);
678 }
679
680 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
681 }
682
683
684 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
685 enum nl80211_commands cmd, struct nlattr *addr)
686 {
687 union wpa_event_data event;
688 enum wpa_event_type ev;
689
690 if (nla_len(addr) != ETH_ALEN)
691 return;
692
693 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
694 cmd, MAC2STR((u8 *) nla_data(addr)));
695
696 if (cmd == NL80211_CMD_AUTHENTICATE)
697 ev = EVENT_AUTH_TIMED_OUT;
698 else if (cmd == NL80211_CMD_ASSOCIATE)
699 ev = EVENT_ASSOC_TIMED_OUT;
700 else
701 return;
702
703 os_memset(&event, 0, sizeof(event));
704 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
705 wpa_supplicant_event(drv->ctx, ev, &event);
706 }
707
708
709 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
710 struct nlattr *freq, const u8 *frame, size_t len)
711 {
712 const struct ieee80211_mgmt *mgmt;
713 union wpa_event_data event;
714 u16 fc, stype;
715
716 mgmt = (const struct ieee80211_mgmt *) frame;
717 if (len < 24) {
718 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
719 return;
720 }
721
722 fc = le_to_host16(mgmt->frame_control);
723 stype = WLAN_FC_GET_STYPE(fc);
724
725 os_memset(&event, 0, sizeof(event));
726 if (freq) {
727 event.rx_action.freq = nla_get_u32(freq);
728 drv->last_mgmt_freq = event.rx_action.freq;
729 }
730 if (stype == WLAN_FC_STYPE_ACTION) {
731 event.rx_action.da = mgmt->da;
732 event.rx_action.sa = mgmt->sa;
733 event.rx_action.bssid = mgmt->bssid;
734 event.rx_action.category = mgmt->u.action.category;
735 event.rx_action.data = &mgmt->u.action.category + 1;
736 event.rx_action.len = frame + len - event.rx_action.data;
737 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
738 } else {
739 event.rx_mgmt.frame = frame;
740 event.rx_mgmt.frame_len = len;
741 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
742 }
743 }
744
745
746 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
747 struct nlattr *cookie, const u8 *frame,
748 size_t len, struct nlattr *ack)
749 {
750 union wpa_event_data event;
751 const struct ieee80211_hdr *hdr;
752 u16 fc;
753 u64 cookie_val;
754
755 if (!cookie)
756 return;
757
758 cookie_val = nla_get_u64(cookie);
759 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
760 "(ack=%d)",
761 (long long unsigned int) cookie_val,
762 cookie_val == drv->send_action_cookie ?
763 " (match)" : " (unknown)", ack != NULL);
764 if (cookie_val != drv->send_action_cookie)
765 return;
766
767 hdr = (const struct ieee80211_hdr *) frame;
768 fc = le_to_host16(hdr->frame_control);
769
770 os_memset(&event, 0, sizeof(event));
771 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
772 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
773 event.tx_status.dst = hdr->addr1;
774 event.tx_status.data = frame;
775 event.tx_status.data_len = len;
776 event.tx_status.ack = ack != NULL;
777 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
778 }
779
780
781 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
782 enum wpa_event_type type,
783 const u8 *frame, size_t len)
784 {
785 const struct ieee80211_mgmt *mgmt;
786 union wpa_event_data event;
787 const u8 *bssid = NULL;
788 u16 reason_code = 0;
789
790 mgmt = (const struct ieee80211_mgmt *) frame;
791 if (len >= 24) {
792 bssid = mgmt->bssid;
793
794 if (drv->associated != 0 &&
795 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
796 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
797 /*
798 * We have presumably received this deauth as a
799 * response to a clear_state_mismatch() outgoing
800 * deauth. Don't let it take us offline!
801 */
802 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
803 "from Unknown BSSID " MACSTR " -- ignoring",
804 MAC2STR(bssid));
805 return;
806 }
807 }
808
809 drv->associated = 0;
810 os_memset(&event, 0, sizeof(event));
811
812 /* Note: Same offset for Reason Code in both frame subtypes */
813 if (len >= 24 + sizeof(mgmt->u.deauth))
814 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
815
816 if (type == EVENT_DISASSOC) {
817 event.disassoc_info.addr = bssid;
818 event.disassoc_info.reason_code = reason_code;
819 if (frame + len > mgmt->u.disassoc.variable) {
820 event.disassoc_info.ie = mgmt->u.disassoc.variable;
821 event.disassoc_info.ie_len = frame + len -
822 mgmt->u.disassoc.variable;
823 }
824 } else {
825 event.deauth_info.addr = bssid;
826 event.deauth_info.reason_code = reason_code;
827 if (frame + len > mgmt->u.deauth.variable) {
828 event.deauth_info.ie = mgmt->u.deauth.variable;
829 event.deauth_info.ie_len = frame + len -
830 mgmt->u.deauth.variable;
831 }
832 }
833
834 wpa_supplicant_event(drv->ctx, type, &event);
835 }
836
837
838 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
839 enum wpa_event_type type,
840 const u8 *frame, size_t len)
841 {
842 const struct ieee80211_mgmt *mgmt;
843 union wpa_event_data event;
844 u16 reason_code = 0;
845
846 if (len < 24)
847 return;
848
849 mgmt = (const struct ieee80211_mgmt *) frame;
850
851 os_memset(&event, 0, sizeof(event));
852 /* Note: Same offset for Reason Code in both frame subtypes */
853 if (len >= 24 + sizeof(mgmt->u.deauth))
854 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
855
856 if (type == EVENT_UNPROT_DISASSOC) {
857 event.unprot_disassoc.sa = mgmt->sa;
858 event.unprot_disassoc.da = mgmt->da;
859 event.unprot_disassoc.reason_code = reason_code;
860 } else {
861 event.unprot_deauth.sa = mgmt->sa;
862 event.unprot_deauth.da = mgmt->da;
863 event.unprot_deauth.reason_code = reason_code;
864 }
865
866 wpa_supplicant_event(drv->ctx, type, &event);
867 }
868
869
870 static void mlme_event(struct wpa_driver_nl80211_data *drv,
871 enum nl80211_commands cmd, struct nlattr *frame,
872 struct nlattr *addr, struct nlattr *timed_out,
873 struct nlattr *freq, struct nlattr *ack,
874 struct nlattr *cookie)
875 {
876 if (timed_out && addr) {
877 mlme_timeout_event(drv, cmd, addr);
878 return;
879 }
880
881 if (frame == NULL) {
882 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
883 "data", cmd);
884 return;
885 }
886
887 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
888 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
889 nla_data(frame), nla_len(frame));
890
891 switch (cmd) {
892 case NL80211_CMD_AUTHENTICATE:
893 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
894 break;
895 case NL80211_CMD_ASSOCIATE:
896 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
897 break;
898 case NL80211_CMD_DEAUTHENTICATE:
899 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
900 nla_data(frame), nla_len(frame));
901 break;
902 case NL80211_CMD_DISASSOCIATE:
903 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
904 nla_data(frame), nla_len(frame));
905 break;
906 case NL80211_CMD_FRAME:
907 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
908 break;
909 case NL80211_CMD_FRAME_TX_STATUS:
910 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
911 nla_len(frame), ack);
912 break;
913 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
914 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
915 nla_data(frame), nla_len(frame));
916 break;
917 case NL80211_CMD_UNPROT_DISASSOCIATE:
918 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
919 nla_data(frame), nla_len(frame));
920 break;
921 default:
922 break;
923 }
924 }
925
926
927 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
928 struct nlattr *tb[])
929 {
930 union wpa_event_data data;
931
932 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
933 os_memset(&data, 0, sizeof(data));
934 if (tb[NL80211_ATTR_MAC]) {
935 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
936 nla_data(tb[NL80211_ATTR_MAC]),
937 nla_len(tb[NL80211_ATTR_MAC]));
938 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
939 }
940 if (tb[NL80211_ATTR_KEY_SEQ]) {
941 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
942 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
943 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
944 }
945 if (tb[NL80211_ATTR_KEY_TYPE]) {
946 enum nl80211_key_type key_type =
947 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
948 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
949 if (key_type == NL80211_KEYTYPE_PAIRWISE)
950 data.michael_mic_failure.unicast = 1;
951 } else
952 data.michael_mic_failure.unicast = 1;
953
954 if (tb[NL80211_ATTR_KEY_IDX]) {
955 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
956 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
957 }
958
959 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
960 }
961
962
963 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
964 struct nlattr *tb[])
965 {
966 if (tb[NL80211_ATTR_MAC] == NULL) {
967 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
968 "event");
969 return;
970 }
971 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
972 drv->associated = 1;
973 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
974 MAC2STR(drv->bssid));
975
976 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
977 }
978
979
980 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
981 int cancel_event, struct nlattr *tb[])
982 {
983 unsigned int freq, chan_type, duration;
984 union wpa_event_data data;
985 u64 cookie;
986
987 if (tb[NL80211_ATTR_WIPHY_FREQ])
988 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
989 else
990 freq = 0;
991
992 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
993 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
994 else
995 chan_type = 0;
996
997 if (tb[NL80211_ATTR_DURATION])
998 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
999 else
1000 duration = 0;
1001
1002 if (tb[NL80211_ATTR_COOKIE])
1003 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1004 else
1005 cookie = 0;
1006
1007 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1008 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1009 cancel_event, freq, chan_type, duration,
1010 (long long unsigned int) cookie,
1011 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1012
1013 if (cookie != drv->remain_on_chan_cookie)
1014 return; /* not for us */
1015
1016 drv->pending_remain_on_chan = !cancel_event;
1017
1018 os_memset(&data, 0, sizeof(data));
1019 data.remain_on_channel.freq = freq;
1020 data.remain_on_channel.duration = duration;
1021 wpa_supplicant_event(drv->ctx, cancel_event ?
1022 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1023 EVENT_REMAIN_ON_CHANNEL, &data);
1024 }
1025
1026
1027 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1028 struct nlattr *tb[])
1029 {
1030 union wpa_event_data event;
1031 struct nlattr *nl;
1032 int rem;
1033 struct scan_info *info;
1034 #define MAX_REPORT_FREQS 50
1035 int freqs[MAX_REPORT_FREQS];
1036 int num_freqs = 0;
1037
1038 os_memset(&event, 0, sizeof(event));
1039 info = &event.scan_info;
1040 info->aborted = aborted;
1041
1042 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1043 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1044 struct wpa_driver_scan_ssid *s =
1045 &info->ssids[info->num_ssids];
1046 s->ssid = nla_data(nl);
1047 s->ssid_len = nla_len(nl);
1048 info->num_ssids++;
1049 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1050 break;
1051 }
1052 }
1053 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1054 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1055 {
1056 freqs[num_freqs] = nla_get_u32(nl);
1057 num_freqs++;
1058 if (num_freqs == MAX_REPORT_FREQS - 1)
1059 break;
1060 }
1061 info->freqs = freqs;
1062 info->num_freqs = num_freqs;
1063 }
1064 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1065 }
1066
1067
1068 static int get_link_signal(struct nl_msg *msg, void *arg)
1069 {
1070 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1071 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1072 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1073 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1074 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1075 };
1076 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1077 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1078 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1079 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1080 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1081 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1082 };
1083 struct signal_change *sig_change = arg;
1084
1085 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1086 genlmsg_attrlen(gnlh, 0), NULL);
1087 if (!tb[NL80211_ATTR_STA_INFO] ||
1088 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1089 tb[NL80211_ATTR_STA_INFO], policy))
1090 return NL_SKIP;
1091 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1092 return NL_SKIP;
1093
1094 sig_change->current_signal =
1095 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1096
1097 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1098 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1099 sinfo[NL80211_STA_INFO_TX_BITRATE],
1100 rate_policy)) {
1101 sig_change->current_txrate = 0;
1102 } else {
1103 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1104 sig_change->current_txrate =
1105 nla_get_u16(rinfo[
1106 NL80211_RATE_INFO_BITRATE]) * 100;
1107 }
1108 }
1109 }
1110
1111 return NL_SKIP;
1112 }
1113
1114
1115 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1116 struct signal_change *sig)
1117 {
1118 struct nl_msg *msg;
1119
1120 sig->current_signal = -9999;
1121 sig->current_txrate = 0;
1122
1123 msg = nlmsg_alloc();
1124 if (!msg)
1125 return -ENOMEM;
1126
1127 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1128 0, NL80211_CMD_GET_STATION, 0);
1129
1130 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1131 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1132
1133 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1134 nla_put_failure:
1135 return -ENOBUFS;
1136 }
1137
1138
1139 static int get_link_noise(struct nl_msg *msg, void *arg)
1140 {
1141 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1142 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1143 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1144 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1145 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1146 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1147 };
1148 struct signal_change *sig_change = arg;
1149
1150 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1151 genlmsg_attrlen(gnlh, 0), NULL);
1152
1153 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1154 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1155 return NL_SKIP;
1156 }
1157
1158 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1159 tb[NL80211_ATTR_SURVEY_INFO],
1160 survey_policy)) {
1161 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1162 "attributes!");
1163 return NL_SKIP;
1164 }
1165
1166 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1167 return NL_SKIP;
1168
1169 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1170 sig_change->frequency)
1171 return NL_SKIP;
1172
1173 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1174 return NL_SKIP;
1175
1176 sig_change->current_noise =
1177 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1178
1179 return NL_SKIP;
1180 }
1181
1182
1183 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1184 struct signal_change *sig_change)
1185 {
1186 struct nl_msg *msg;
1187
1188 sig_change->current_noise = 9999;
1189 sig_change->frequency = drv->assoc_freq;
1190
1191 msg = nlmsg_alloc();
1192 if (!msg)
1193 return -ENOMEM;
1194
1195 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1196 NLM_F_DUMP, NL80211_CMD_GET_SURVEY, 0);
1197
1198 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1199
1200 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1201 nla_put_failure:
1202 return -ENOBUFS;
1203 }
1204
1205
1206 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1207 struct nlattr *tb[])
1208 {
1209 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1210 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1211 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1212 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1213 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1214 };
1215 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1216 enum nl80211_cqm_rssi_threshold_event event;
1217 union wpa_event_data ed;
1218 struct signal_change sig;
1219 int res;
1220
1221 if (tb[NL80211_ATTR_CQM] == NULL ||
1222 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1223 cqm_policy)) {
1224 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1225 return;
1226 }
1227
1228 os_memset(&ed, 0, sizeof(ed));
1229
1230 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1231 if (!tb[NL80211_ATTR_MAC])
1232 return;
1233 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1234 ETH_ALEN);
1235 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1236 return;
1237 }
1238
1239 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1240 return;
1241 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1242
1243 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1244 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1245 "event: RSSI high");
1246 ed.signal_change.above_threshold = 1;
1247 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1248 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1249 "event: RSSI low");
1250 ed.signal_change.above_threshold = 0;
1251 } else
1252 return;
1253
1254 res = nl80211_get_link_signal(drv, &sig);
1255 if (res == 0) {
1256 ed.signal_change.current_signal = sig.current_signal;
1257 ed.signal_change.current_txrate = sig.current_txrate;
1258 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1259 sig.current_signal, sig.current_txrate);
1260 }
1261
1262 res = nl80211_get_link_noise(drv, &sig);
1263 if (res == 0) {
1264 ed.signal_change.current_noise = sig.current_noise;
1265 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1266 sig.current_noise);
1267 }
1268
1269 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1270 }
1271
1272
1273 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1274 struct nlattr **tb)
1275 {
1276 u8 *addr;
1277 union wpa_event_data data;
1278
1279 if (tb[NL80211_ATTR_MAC] == NULL)
1280 return;
1281 addr = nla_data(tb[NL80211_ATTR_MAC]);
1282 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1283 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1284 return;
1285
1286 os_memset(&data, 0, sizeof(data));
1287 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1288 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1289 }
1290
1291
1292 static int process_event(struct nl_msg *msg, void *arg)
1293 {
1294 struct wpa_driver_nl80211_data *drv = arg;
1295 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1296 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1297 union wpa_event_data data;
1298
1299 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1300 genlmsg_attrlen(gnlh, 0), NULL);
1301
1302 if (tb[NL80211_ATTR_IFINDEX]) {
1303 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1304 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1305 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1306 " for foreign interface (ifindex %d)",
1307 gnlh->cmd, ifindex);
1308 return NL_SKIP;
1309 }
1310 }
1311
1312 if (drv->ap_scan_as_station &&
1313 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1314 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1315 wpa_driver_nl80211_set_mode(&drv->first_bss,
1316 IEEE80211_MODE_AP);
1317 drv->ap_scan_as_station = 0;
1318 }
1319
1320 switch (gnlh->cmd) {
1321 case NL80211_CMD_TRIGGER_SCAN:
1322 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1323 break;
1324 case NL80211_CMD_NEW_SCAN_RESULTS:
1325 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1326 drv->scan_complete_events = 1;
1327 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1328 drv->ctx);
1329 send_scan_event(drv, 0, tb);
1330 break;
1331 case NL80211_CMD_SCAN_ABORTED:
1332 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1333 /*
1334 * Need to indicate that scan results are available in order
1335 * not to make wpa_supplicant stop its scanning.
1336 */
1337 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1338 drv->ctx);
1339 send_scan_event(drv, 1, tb);
1340 break;
1341 case NL80211_CMD_AUTHENTICATE:
1342 case NL80211_CMD_ASSOCIATE:
1343 case NL80211_CMD_DEAUTHENTICATE:
1344 case NL80211_CMD_DISASSOCIATE:
1345 case NL80211_CMD_FRAME:
1346 case NL80211_CMD_FRAME_TX_STATUS:
1347 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1348 case NL80211_CMD_UNPROT_DISASSOCIATE:
1349 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1350 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1351 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1352 tb[NL80211_ATTR_COOKIE]);
1353 break;
1354 case NL80211_CMD_CONNECT:
1355 case NL80211_CMD_ROAM:
1356 mlme_event_connect(drv, gnlh->cmd,
1357 tb[NL80211_ATTR_STATUS_CODE],
1358 tb[NL80211_ATTR_MAC],
1359 tb[NL80211_ATTR_REQ_IE],
1360 tb[NL80211_ATTR_RESP_IE]);
1361 break;
1362 case NL80211_CMD_DISCONNECT:
1363 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1364 /*
1365 * Avoid reporting two disassociation events that could
1366 * confuse the core code.
1367 */
1368 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1369 "event when using userspace SME");
1370 break;
1371 }
1372 drv->associated = 0;
1373 os_memset(&data, 0, sizeof(data));
1374 if (tb[NL80211_ATTR_REASON_CODE])
1375 data.disassoc_info.reason_code =
1376 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1377 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1378 break;
1379 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1380 mlme_event_michael_mic_failure(drv, tb);
1381 break;
1382 case NL80211_CMD_JOIN_IBSS:
1383 mlme_event_join_ibss(drv, tb);
1384 break;
1385 case NL80211_CMD_REMAIN_ON_CHANNEL:
1386 mlme_event_remain_on_channel(drv, 0, tb);
1387 break;
1388 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1389 mlme_event_remain_on_channel(drv, 1, tb);
1390 break;
1391 case NL80211_CMD_NOTIFY_CQM:
1392 nl80211_cqm_event(drv, tb);
1393 break;
1394 case NL80211_CMD_REG_CHANGE:
1395 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1396 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1397 NULL);
1398 break;
1399 case NL80211_CMD_REG_BEACON_HINT:
1400 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1401 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1402 NULL);
1403 break;
1404 case NL80211_CMD_NEW_STATION:
1405 nl80211_new_station_event(drv, tb);
1406 break;
1407 default:
1408 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1409 "(cmd=%d)", gnlh->cmd);
1410 break;
1411 }
1412
1413 return NL_SKIP;
1414 }
1415
1416
1417 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1418 void *handle)
1419 {
1420 struct nl_cb *cb;
1421 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1422
1423 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1424
1425 cb = nl_cb_clone(drv->nl_cb);
1426 if (!cb)
1427 return;
1428 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1429 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1430 nl_recvmsgs(handle, cb);
1431 nl_cb_put(cb);
1432 }
1433
1434
1435 /**
1436 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1437 * @priv: driver_nl80211 private data
1438 * @alpha2_arg: country to which to switch to
1439 * Returns: 0 on success, -1 on failure
1440 *
1441 * This asks nl80211 to set the regulatory domain for given
1442 * country ISO / IEC alpha2.
1443 */
1444 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1445 {
1446 struct i802_bss *bss = priv;
1447 struct wpa_driver_nl80211_data *drv = bss->drv;
1448 char alpha2[3];
1449 struct nl_msg *msg;
1450
1451 msg = nlmsg_alloc();
1452 if (!msg)
1453 return -ENOMEM;
1454
1455 alpha2[0] = alpha2_arg[0];
1456 alpha2[1] = alpha2_arg[1];
1457 alpha2[2] = '\0';
1458
1459 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1460 0, NL80211_CMD_REQ_SET_REG, 0);
1461
1462 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1463 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1464 return -EINVAL;
1465 return 0;
1466 nla_put_failure:
1467 return -EINVAL;
1468 }
1469
1470
1471 #ifndef HOSTAPD
1472 struct wiphy_info_data {
1473 int max_scan_ssids;
1474 int ap_supported;
1475 int p2p_supported;
1476 int auth_supported;
1477 int connect_supported;
1478 int offchan_tx_supported;
1479 int max_remain_on_chan;
1480 };
1481
1482
1483 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1484 {
1485 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1486 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1487 struct wiphy_info_data *info = arg;
1488 int p2p_go_supported = 0, p2p_client_supported = 0;
1489
1490 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1491 genlmsg_attrlen(gnlh, 0), NULL);
1492
1493 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1494 info->max_scan_ssids =
1495 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1496
1497 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1498 struct nlattr *nl_mode;
1499 int i;
1500 nla_for_each_nested(nl_mode,
1501 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1502 switch (nla_type(nl_mode)) {
1503 case NL80211_IFTYPE_AP:
1504 info->ap_supported = 1;
1505 break;
1506 case NL80211_IFTYPE_P2P_GO:
1507 p2p_go_supported = 1;
1508 break;
1509 case NL80211_IFTYPE_P2P_CLIENT:
1510 p2p_client_supported = 1;
1511 break;
1512 }
1513 }
1514 }
1515
1516 info->p2p_supported = p2p_go_supported && p2p_client_supported;
1517
1518 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1519 struct nlattr *nl_cmd;
1520 int i;
1521
1522 nla_for_each_nested(nl_cmd,
1523 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1524 u32 cmd = nla_get_u32(nl_cmd);
1525 if (cmd == NL80211_CMD_AUTHENTICATE)
1526 info->auth_supported = 1;
1527 else if (cmd == NL80211_CMD_CONNECT)
1528 info->connect_supported = 1;
1529 }
1530 }
1531
1532 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK])
1533 info->offchan_tx_supported = 1;
1534
1535 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
1536 info->max_remain_on_chan =
1537 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
1538
1539 return NL_SKIP;
1540 }
1541
1542
1543 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1544 struct wiphy_info_data *info)
1545 {
1546 struct nl_msg *msg;
1547
1548 os_memset(info, 0, sizeof(*info));
1549
1550 /* default to 5000 since early versions of mac80211 don't set it */
1551 info->max_remain_on_chan = 5000;
1552
1553 msg = nlmsg_alloc();
1554 if (!msg)
1555 return -1;
1556
1557 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1558 0, NL80211_CMD_GET_WIPHY, 0);
1559
1560 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1561
1562 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1563 return 0;
1564 msg = NULL;
1565 nla_put_failure:
1566 nlmsg_free(msg);
1567 return -1;
1568 }
1569
1570
1571 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1572 {
1573 struct wiphy_info_data info;
1574 if (wpa_driver_nl80211_get_info(drv, &info))
1575 return -1;
1576 drv->has_capability = 1;
1577 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1578 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1579 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1580 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1581 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1582 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1583 WPA_DRIVER_CAPA_ENC_WEP104 |
1584 WPA_DRIVER_CAPA_ENC_TKIP |
1585 WPA_DRIVER_CAPA_ENC_CCMP;
1586 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1587 WPA_DRIVER_AUTH_SHARED |
1588 WPA_DRIVER_AUTH_LEAP;
1589
1590 drv->capa.max_scan_ssids = info.max_scan_ssids;
1591 if (info.ap_supported)
1592 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1593
1594 if (info.auth_supported)
1595 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1596 else if (!info.connect_supported) {
1597 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1598 "authentication/association or connect commands");
1599 return -1;
1600 }
1601
1602 if (info.offchan_tx_supported) {
1603 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
1604 "off-channel TX");
1605 drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
1606 }
1607
1608 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
1609 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1610 if (info.p2p_supported)
1611 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1612 drv->capa.max_remain_on_chan = info.max_remain_on_chan;
1613
1614 return 0;
1615 }
1616 #endif /* HOSTAPD */
1617
1618
1619 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1620 {
1621 int ret;
1622
1623 /* Initialize generic netlink and nl80211 */
1624
1625 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1626 if (drv->nl_cb == NULL) {
1627 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1628 "callbacks");
1629 goto err1;
1630 }
1631
1632 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1633 if (drv->nl_handle == NULL) {
1634 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1635 "callbacks");
1636 goto err2;
1637 }
1638
1639 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1640 if (drv->nl_handle_event == NULL) {
1641 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1642 "callbacks (event)");
1643 goto err2b;
1644 }
1645
1646 if (genl_connect(drv->nl_handle)) {
1647 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1648 "netlink");
1649 goto err3;
1650 }
1651
1652 if (genl_connect(drv->nl_handle_event)) {
1653 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1654 "netlink (event)");
1655 goto err3;
1656 }
1657
1658 #ifdef CONFIG_LIBNL20
1659 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1660 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1661 "netlink cache");
1662 goto err3;
1663 }
1664 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1665 0) {
1666 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1667 "netlink cache (event)");
1668 goto err3b;
1669 }
1670 #else /* CONFIG_LIBNL20 */
1671 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1672 if (drv->nl_cache == NULL) {
1673 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1674 "netlink cache");
1675 goto err3;
1676 }
1677 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1678 if (drv->nl_cache_event == NULL) {
1679 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1680 "netlink cache (event)");
1681 goto err3b;
1682 }
1683 #endif /* CONFIG_LIBNL20 */
1684
1685 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1686 if (drv->nl80211 == NULL) {
1687 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1688 "found");
1689 goto err4;
1690 }
1691
1692 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1693 if (ret >= 0)
1694 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1695 if (ret < 0) {
1696 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1697 "membership for scan events: %d (%s)",
1698 ret, strerror(-ret));
1699 goto err4;
1700 }
1701
1702 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1703 if (ret >= 0)
1704 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1705 if (ret < 0) {
1706 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1707 "membership for mlme events: %d (%s)",
1708 ret, strerror(-ret));
1709 goto err4;
1710 }
1711
1712 ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
1713 if (ret >= 0)
1714 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1715 if (ret < 0) {
1716 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1717 "membership for regulatory events: %d (%s)",
1718 ret, strerror(-ret));
1719 /* Continue without regulatory events */
1720 }
1721
1722 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1723 wpa_driver_nl80211_event_receive, drv,
1724 drv->nl_handle_event);
1725
1726 return 0;
1727
1728 err4:
1729 nl_cache_free(drv->nl_cache_event);
1730 err3b:
1731 nl_cache_free(drv->nl_cache);
1732 err3:
1733 nl80211_handle_destroy(drv->nl_handle_event);
1734 err2b:
1735 nl80211_handle_destroy(drv->nl_handle);
1736 err2:
1737 nl_cb_put(drv->nl_cb);
1738 err1:
1739 return -1;
1740 }
1741
1742
1743 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1744 {
1745 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1746 /*
1747 * This may be for any interface; use ifdown event to disable
1748 * interface.
1749 */
1750 }
1751
1752
1753 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1754 {
1755 struct wpa_driver_nl80211_data *drv = ctx;
1756 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1757 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1758 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1759 "after rfkill unblock");
1760 return;
1761 }
1762 /* rtnetlink ifup handler will report interface as enabled */
1763 }
1764
1765
1766 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
1767 {
1768 /* Find phy (radio) to which this interface belongs */
1769 char buf[90], *pos;
1770 int f, rv;
1771
1772 drv->phyname[0] = '\0';
1773 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
1774 drv->first_bss.ifname);
1775 f = open(buf, O_RDONLY);
1776 if (f < 0) {
1777 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
1778 buf, strerror(errno));
1779 return;
1780 }
1781
1782 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
1783 close(f);
1784 if (rv < 0) {
1785 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
1786 buf, strerror(errno));
1787 return;
1788 }
1789
1790 drv->phyname[rv] = '\0';
1791 pos = os_strchr(drv->phyname, '\n');
1792 if (pos)
1793 *pos = '\0';
1794 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
1795 drv->first_bss.ifname, drv->phyname);
1796 }
1797
1798
1799 /**
1800 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1801 * @ctx: context to be used when calling wpa_supplicant functions,
1802 * e.g., wpa_supplicant_event()
1803 * @ifname: interface name, e.g., wlan0
1804 * @global_priv: private driver global data from global_init()
1805 * Returns: Pointer to private data, %NULL on failure
1806 */
1807 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1808 void *global_priv)
1809 {
1810 struct wpa_driver_nl80211_data *drv;
1811 struct netlink_config *cfg;
1812 struct rfkill_config *rcfg;
1813 struct i802_bss *bss;
1814
1815 drv = os_zalloc(sizeof(*drv));
1816 if (drv == NULL)
1817 return NULL;
1818 drv->global = global_priv;
1819 if (drv->global)
1820 dl_list_add(&drv->global->interfaces, &drv->list);
1821 drv->ctx = ctx;
1822 bss = &drv->first_bss;
1823 bss->drv = drv;
1824 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1825 drv->monitor_ifidx = -1;
1826 drv->monitor_sock = -1;
1827 drv->ioctl_sock = -1;
1828
1829 if (wpa_driver_nl80211_init_nl(drv)) {
1830 os_free(drv);
1831 return NULL;
1832 }
1833
1834 nl80211_get_phy_name(drv);
1835
1836 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1837 if (drv->ioctl_sock < 0) {
1838 perror("socket(PF_INET,SOCK_DGRAM)");
1839 goto failed;
1840 }
1841
1842 cfg = os_zalloc(sizeof(*cfg));
1843 if (cfg == NULL)
1844 goto failed;
1845 cfg->ctx = drv;
1846 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1847 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1848 drv->netlink = netlink_init(cfg);
1849 if (drv->netlink == NULL) {
1850 os_free(cfg);
1851 goto failed;
1852 }
1853
1854 rcfg = os_zalloc(sizeof(*rcfg));
1855 if (rcfg == NULL)
1856 goto failed;
1857 rcfg->ctx = drv;
1858 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1859 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1860 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1861 drv->rfkill = rfkill_init(rcfg);
1862 if (drv->rfkill == NULL) {
1863 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1864 os_free(rcfg);
1865 }
1866
1867 if (wpa_driver_nl80211_finish_drv_init(drv))
1868 goto failed;
1869
1870 return bss;
1871
1872 failed:
1873 rfkill_deinit(drv->rfkill);
1874 netlink_deinit(drv->netlink);
1875 if (drv->ioctl_sock >= 0)
1876 close(drv->ioctl_sock);
1877
1878 genl_family_put(drv->nl80211);
1879 nl_cache_free(drv->nl_cache);
1880 nl80211_handle_destroy(drv->nl_handle);
1881 nl_cb_put(drv->nl_cb);
1882 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1883
1884 os_free(drv);
1885 return NULL;
1886 }
1887
1888
1889 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1890 struct nl_handle *nl_handle,
1891 u16 type, const u8 *match, size_t match_len)
1892 {
1893 struct nl_msg *msg;
1894 int ret = -1;
1895
1896 msg = nlmsg_alloc();
1897 if (!msg)
1898 return -1;
1899
1900 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1901 NL80211_CMD_REGISTER_ACTION, 0);
1902
1903 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1904 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1905 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1906
1907 ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1908 msg = NULL;
1909 if (ret) {
1910 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1911 "failed (type=%u): ret=%d (%s)",
1912 type, ret, strerror(-ret));
1913 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1914 match, match_len);
1915 goto nla_put_failure;
1916 }
1917 ret = 0;
1918 nla_put_failure:
1919 nlmsg_free(msg);
1920 return ret;
1921 }
1922
1923
1924 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1925 const u8 *match, size_t match_len)
1926 {
1927 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1928 return nl80211_register_frame(drv, drv->nl_handle_event,
1929 type, match, match_len);
1930 }
1931
1932
1933 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1934 {
1935 #ifdef CONFIG_P2P
1936 /* GAS Initial Request */
1937 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1938 return -1;
1939 /* GAS Initial Response */
1940 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1941 return -1;
1942 /* GAS Comeback Request */
1943 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1944 return -1;
1945 /* GAS Comeback Response */
1946 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1947 return -1;
1948 /* P2P Public Action */
1949 if (nl80211_register_action_frame(drv,
1950 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1951 6) < 0)
1952 return -1;
1953 /* P2P Action */
1954 if (nl80211_register_action_frame(drv,
1955 (u8 *) "\x7f\x50\x6f\x9a\x09",
1956 5) < 0)
1957 return -1;
1958 #endif /* CONFIG_P2P */
1959 #ifdef CONFIG_IEEE80211W
1960 /* SA Query Response */
1961 if (nl80211_register_action_frame(drv, (u8 *) "\x08\x01", 2) < 0)
1962 return -1;
1963 #endif /* CONFIG_IEEE80211W */
1964
1965 /* FT Action frames */
1966 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1967 return -1;
1968 else
1969 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1970 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1971
1972 return 0;
1973 }
1974
1975
1976 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1977 {
1978 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1979 }
1980
1981
1982 static int
1983 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1984 {
1985 struct i802_bss *bss = &drv->first_bss;
1986 int send_rfkill_event = 0;
1987
1988 drv->ifindex = if_nametoindex(bss->ifname);
1989 drv->first_bss.ifindex = drv->ifindex;
1990
1991 #ifndef HOSTAPD
1992 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1993 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1994 "use managed mode");
1995 }
1996
1997 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1998 if (rfkill_is_blocked(drv->rfkill)) {
1999 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2000 "interface '%s' due to rfkill",
2001 bss->ifname);
2002 drv->if_disabled = 1;
2003 send_rfkill_event = 1;
2004 } else {
2005 wpa_printf(MSG_ERROR, "nl80211: Could not set "
2006 "interface '%s' UP", bss->ifname);
2007 return -1;
2008 }
2009 }
2010
2011 if (wpa_driver_nl80211_capa(drv))
2012 return -1;
2013
2014 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
2015 1, IF_OPER_DORMANT);
2016 #endif /* HOSTAPD */
2017
2018 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, drv->addr))
2019 return -1;
2020
2021 if (nl80211_register_action_frames(drv) < 0) {
2022 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
2023 "frame processing - ignore for now");
2024 /*
2025 * Older kernel versions did not support this, so ignore the
2026 * error for now. Some functionality may not be available
2027 * because of this.
2028 */
2029 }
2030
2031 if (send_rfkill_event) {
2032 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2033 drv, drv->ctx);
2034 }
2035
2036 return 0;
2037 }
2038
2039
2040 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2041 {
2042 struct nl_msg *msg;
2043
2044 msg = nlmsg_alloc();
2045 if (!msg)
2046 return -ENOMEM;
2047
2048 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2049 0, NL80211_CMD_DEL_BEACON, 0);
2050 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2051
2052 return send_and_recv_msgs(drv, msg, NULL, NULL);
2053 nla_put_failure:
2054 return -ENOBUFS;
2055 }
2056
2057
2058 /**
2059 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2060 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2061 *
2062 * Shut down driver interface and processing of driver events. Free
2063 * private data buffer if one was allocated in wpa_driver_nl80211_init().
2064 */
2065 static void wpa_driver_nl80211_deinit(void *priv)
2066 {
2067 struct i802_bss *bss = priv;
2068 struct wpa_driver_nl80211_data *drv = bss->drv;
2069
2070 if (drv->nl_handle_preq)
2071 wpa_driver_nl80211_probe_req_report(bss, 0);
2072 if (bss->added_if_into_bridge) {
2073 if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname)
2074 < 0)
2075 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2076 "interface %s from bridge %s: %s",
2077 bss->ifname, bss->brname, strerror(errno));
2078 }
2079 if (bss->added_bridge) {
2080 if (linux_br_del(drv->ioctl_sock, bss->brname) < 0)
2081 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2082 "bridge %s: %s",
2083 bss->brname, strerror(errno));
2084 }
2085
2086 nl80211_remove_monitor_interface(drv);
2087
2088 if (drv->nlmode == NL80211_IFTYPE_AP)
2089 wpa_driver_nl80211_del_beacon(drv);
2090
2091 #ifdef HOSTAPD
2092 if (drv->last_freq_ht) {
2093 /* Clear HT flags from the driver */
2094 struct hostapd_freq_params freq;
2095 os_memset(&freq, 0, sizeof(freq));
2096 freq.freq = drv->last_freq;
2097 i802_set_freq(priv, &freq);
2098 }
2099
2100 if (drv->eapol_sock >= 0) {
2101 eloop_unregister_read_sock(drv->eapol_sock);
2102 close(drv->eapol_sock);
2103 }
2104
2105 if (drv->if_indices != drv->default_if_indices)
2106 os_free(drv->if_indices);
2107 #endif /* HOSTAPD */
2108
2109 if (drv->disable_11b_rates)
2110 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2111
2112 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
2113 netlink_deinit(drv->netlink);
2114 rfkill_deinit(drv->rfkill);
2115
2116 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2117
2118 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
2119 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
2120
2121 if (drv->ioctl_sock >= 0)
2122 close(drv->ioctl_sock);
2123
2124 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
2125 genl_family_put(drv->nl80211);
2126 nl_cache_free(drv->nl_cache);
2127 nl_cache_free(drv->nl_cache_event);
2128 nl80211_handle_destroy(drv->nl_handle);
2129 nl80211_handle_destroy(drv->nl_handle_event);
2130 nl_cb_put(drv->nl_cb);
2131
2132 os_free(drv->filter_ssids);
2133
2134 if (drv->global)
2135 dl_list_del(&drv->list);
2136
2137 os_free(drv);
2138 }
2139
2140
2141 /**
2142 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2143 * @eloop_ctx: Driver private data
2144 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2145 *
2146 * This function can be used as registered timeout when starting a scan to
2147 * generate a scan completed event if the driver does not report this.
2148 */
2149 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2150 {
2151 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2152 if (drv->ap_scan_as_station) {
2153 wpa_driver_nl80211_set_mode(&drv->first_bss,
2154 IEEE80211_MODE_AP);
2155 drv->ap_scan_as_station = 0;
2156 }
2157 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2158 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2159 }
2160
2161
2162 /**
2163 * wpa_driver_nl80211_scan - Request the driver to initiate scan
2164 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2165 * @params: Scan parameters
2166 * Returns: 0 on success, -1 on failure
2167 */
2168 static int wpa_driver_nl80211_scan(void *priv,
2169 struct wpa_driver_scan_params *params)
2170 {
2171 struct i802_bss *bss = priv;
2172 struct wpa_driver_nl80211_data *drv = bss->drv;
2173 int ret = 0, timeout;
2174 struct nl_msg *msg, *ssids, *freqs;
2175 size_t i;
2176
2177 msg = nlmsg_alloc();
2178 ssids = nlmsg_alloc();
2179 freqs = nlmsg_alloc();
2180 if (!msg || !ssids || !freqs) {
2181 nlmsg_free(msg);
2182 nlmsg_free(ssids);
2183 nlmsg_free(freqs);
2184 return -1;
2185 }
2186
2187 os_free(drv->filter_ssids);
2188 drv->filter_ssids = params->filter_ssids;
2189 params->filter_ssids = NULL;
2190 drv->num_filter_ssids = params->num_filter_ssids;
2191
2192 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2193 NL80211_CMD_TRIGGER_SCAN, 0);
2194
2195 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2196
2197 for (i = 0; i < params->num_ssids; i++) {
2198 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2199 params->ssids[i].ssid,
2200 params->ssids[i].ssid_len);
2201 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2202 params->ssids[i].ssid);
2203 }
2204 if (params->num_ssids)
2205 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2206
2207 if (params->extra_ies) {
2208 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2209 params->extra_ies, params->extra_ies_len);
2210 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2211 params->extra_ies);
2212 }
2213
2214 if (params->freqs) {
2215 for (i = 0; params->freqs[i]; i++) {
2216 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2217 "MHz", params->freqs[i]);
2218 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2219 }
2220 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2221 }
2222
2223 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2224 msg = NULL;
2225 if (ret) {
2226 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2227 "(%s)", ret, strerror(-ret));
2228 #ifdef HOSTAPD
2229 if (drv->nlmode == NL80211_IFTYPE_AP) {
2230 /*
2231 * mac80211 does not allow scan requests in AP mode, so
2232 * try to do this in station mode.
2233 */
2234 if (wpa_driver_nl80211_set_mode(bss,
2235 IEEE80211_MODE_INFRA))
2236 goto nla_put_failure;
2237
2238 if (wpa_driver_nl80211_scan(drv, params)) {
2239 wpa_driver_nl80211_set_mode(bss,
2240 IEEE80211_MODE_AP);
2241 goto nla_put_failure;
2242 }
2243
2244 /* Restore AP mode when processing scan results */
2245 drv->ap_scan_as_station = 1;
2246 ret = 0;
2247 } else
2248 goto nla_put_failure;
2249 #else /* HOSTAPD */
2250 goto nla_put_failure;
2251 #endif /* HOSTAPD */
2252 }
2253
2254 /* Not all drivers generate "scan completed" wireless event, so try to
2255 * read results after a timeout. */
2256 timeout = 10;
2257 if (drv->scan_complete_events) {
2258 /*
2259 * The driver seems to deliver events to notify when scan is
2260 * complete, so use longer timeout to avoid race conditions
2261 * with scanning and following association request.
2262 */
2263 timeout = 30;
2264 }
2265 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2266 "seconds", ret, timeout);
2267 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2268 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2269 drv, drv->ctx);
2270
2271 nla_put_failure:
2272 nlmsg_free(ssids);
2273 nlmsg_free(msg);
2274 nlmsg_free(freqs);
2275 return ret;
2276 }
2277
2278
2279 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2280 {
2281 const u8 *end, *pos;
2282
2283 if (ies == NULL)
2284 return NULL;
2285
2286 pos = ies;
2287 end = ies + ies_len;
2288
2289 while (pos + 1 < end) {
2290 if (pos + 2 + pos[1] > end)
2291 break;
2292 if (pos[0] == ie)
2293 return pos;
2294 pos += 2 + pos[1];
2295 }
2296
2297 return NULL;
2298 }
2299
2300
2301 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2302 const u8 *ie, size_t ie_len)
2303 {
2304 const u8 *ssid;
2305 size_t i;
2306
2307 if (drv->filter_ssids == NULL)
2308 return 0;
2309
2310 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2311 if (ssid == NULL)
2312 return 1;
2313
2314 for (i = 0; i < drv->num_filter_ssids; i++) {
2315 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2316 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2317 0)
2318 return 0;
2319 }
2320
2321 return 1;
2322 }
2323
2324
2325 struct nl80211_bss_info_arg {
2326 struct wpa_driver_nl80211_data *drv;
2327 struct wpa_scan_results *res;
2328 };
2329
2330 static int bss_info_handler(struct nl_msg *msg, void *arg)
2331 {
2332 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2333 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2334 struct nlattr *bss[NL80211_BSS_MAX + 1];
2335 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2336 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2337 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2338 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2339 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2340 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2341 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2342 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2343 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2344 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2345 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2346 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2347 };
2348 struct nl80211_bss_info_arg *_arg = arg;
2349 struct wpa_scan_results *res = _arg->res;
2350 struct wpa_scan_res **tmp;
2351 struct wpa_scan_res *r;
2352 const u8 *ie, *beacon_ie;
2353 size_t ie_len, beacon_ie_len;
2354 u8 *pos;
2355
2356 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2357 genlmsg_attrlen(gnlh, 0), NULL);
2358 if (!tb[NL80211_ATTR_BSS])
2359 return NL_SKIP;
2360 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2361 bss_policy))
2362 return NL_SKIP;
2363 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2364 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2365 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2366 } else {
2367 ie = NULL;
2368 ie_len = 0;
2369 }
2370 if (bss[NL80211_BSS_BEACON_IES]) {
2371 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2372 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2373 } else {
2374 beacon_ie = NULL;
2375 beacon_ie_len = 0;
2376 }
2377
2378 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2379 ie ? ie_len : beacon_ie_len))
2380 return NL_SKIP;
2381
2382 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2383 if (r == NULL)
2384 return NL_SKIP;
2385 if (bss[NL80211_BSS_BSSID])
2386 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2387 ETH_ALEN);
2388 if (bss[NL80211_BSS_FREQUENCY])
2389 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2390 if (bss[NL80211_BSS_BEACON_INTERVAL])
2391 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2392 if (bss[NL80211_BSS_CAPABILITY])
2393 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2394 r->flags |= WPA_SCAN_NOISE_INVALID;
2395 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2396 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2397 r->level /= 100; /* mBm to dBm */
2398 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2399 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2400 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2401 r->flags |= WPA_SCAN_LEVEL_INVALID;
2402 } else
2403 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2404 if (bss[NL80211_BSS_TSF])
2405 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2406 if (bss[NL80211_BSS_SEEN_MS_AGO])
2407 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2408 r->ie_len = ie_len;
2409 pos = (u8 *) (r + 1);
2410 if (ie) {
2411 os_memcpy(pos, ie, ie_len);
2412 pos += ie_len;
2413 }
2414 r->beacon_ie_len = beacon_ie_len;
2415 if (beacon_ie)
2416 os_memcpy(pos, beacon_ie, beacon_ie_len);
2417
2418 if (bss[NL80211_BSS_STATUS]) {
2419 enum nl80211_bss_status status;
2420 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2421 switch (status) {
2422 case NL80211_BSS_STATUS_AUTHENTICATED:
2423 r->flags |= WPA_SCAN_AUTHENTICATED;
2424 break;
2425 case NL80211_BSS_STATUS_ASSOCIATED:
2426 r->flags |= WPA_SCAN_ASSOCIATED;
2427 break;
2428 default:
2429 break;
2430 }
2431 }
2432
2433 tmp = os_realloc(res->res,
2434 (res->num + 1) * sizeof(struct wpa_scan_res *));
2435 if (tmp == NULL) {
2436 os_free(r);
2437 return NL_SKIP;
2438 }
2439 tmp[res->num++] = r;
2440 res->res = tmp;
2441
2442 return NL_SKIP;
2443 }
2444
2445
2446 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2447 const u8 *addr)
2448 {
2449 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2450 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2451 "mismatch (" MACSTR ")", MAC2STR(addr));
2452 wpa_driver_nl80211_mlme(drv, addr,
2453 NL80211_CMD_DEAUTHENTICATE,
2454 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2455 }
2456 }
2457
2458
2459 static void wpa_driver_nl80211_check_bss_status(
2460 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2461 {
2462 size_t i;
2463
2464 for (i = 0; i < res->num; i++) {
2465 struct wpa_scan_res *r = res->res[i];
2466 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2467 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2468 "indicates BSS status with " MACSTR
2469 " as authenticated",
2470 MAC2STR(r->bssid));
2471 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2472 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2473 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2474 0) {
2475 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2476 " in local state (auth=" MACSTR
2477 " assoc=" MACSTR ")",
2478 MAC2STR(drv->auth_bssid),
2479 MAC2STR(drv->bssid));
2480 clear_state_mismatch(drv, r->bssid);
2481 }
2482 }
2483
2484 if (r->flags & WPA_SCAN_ASSOCIATED) {
2485 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2486 "indicate BSS status with " MACSTR
2487 " as associated",
2488 MAC2STR(r->bssid));
2489 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2490 !drv->associated) {
2491 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2492 "(not associated) does not match "
2493 "with BSS state");
2494 clear_state_mismatch(drv, r->bssid);
2495 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2496 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2497 0) {
2498 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2499 "(associated with " MACSTR ") does "
2500 "not match with BSS state",
2501 MAC2STR(drv->bssid));
2502 clear_state_mismatch(drv, r->bssid);
2503 clear_state_mismatch(drv, drv->bssid);
2504 }
2505 }
2506 }
2507 }
2508
2509
2510 static void wpa_scan_results_free(struct wpa_scan_results *res)
2511 {
2512 size_t i;
2513
2514 if (res == NULL)
2515 return;
2516
2517 for (i = 0; i < res->num; i++)
2518 os_free(res->res[i]);
2519 os_free(res->res);
2520 os_free(res);
2521 }
2522
2523
2524 static struct wpa_scan_results *
2525 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2526 {
2527 struct nl_msg *msg;
2528 struct wpa_scan_results *res;
2529 int ret;
2530 struct nl80211_bss_info_arg arg;
2531
2532 res = os_zalloc(sizeof(*res));
2533 if (res == NULL)
2534 return NULL;
2535 msg = nlmsg_alloc();
2536 if (!msg)
2537 goto nla_put_failure;
2538
2539 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2540 NL80211_CMD_GET_SCAN, 0);
2541 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2542
2543 arg.drv = drv;
2544 arg.res = res;
2545 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2546 msg = NULL;
2547 if (ret == 0) {
2548 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2549 (unsigned long) res->num);
2550 return res;
2551 }
2552 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2553 "(%s)", ret, strerror(-ret));
2554 nla_put_failure:
2555 nlmsg_free(msg);
2556 wpa_scan_results_free(res);
2557 return NULL;
2558 }
2559
2560
2561 /**
2562 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2563 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2564 * Returns: Scan results on success, -1 on failure
2565 */
2566 static struct wpa_scan_results *
2567 wpa_driver_nl80211_get_scan_results(void *priv)
2568 {
2569 struct i802_bss *bss = priv;
2570 struct wpa_driver_nl80211_data *drv = bss->drv;
2571 struct wpa_scan_results *res;
2572
2573 res = nl80211_get_scan_results(drv);
2574 if (res)
2575 wpa_driver_nl80211_check_bss_status(drv, res);
2576 return res;
2577 }
2578
2579
2580 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2581 {
2582 struct wpa_scan_results *res;
2583 size_t i;
2584
2585 res = nl80211_get_scan_results(drv);
2586 if (res == NULL) {
2587 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2588 return;
2589 }
2590
2591 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2592 for (i = 0; i < res->num; i++) {
2593 struct wpa_scan_res *r = res->res[i];
2594 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2595 (int) i, (int) res->num, MAC2STR(r->bssid),
2596 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2597 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2598 }
2599
2600 wpa_scan_results_free(res);
2601 }
2602
2603
2604 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2605 enum wpa_alg alg, const u8 *addr,
2606 int key_idx, int set_tx,
2607 const u8 *seq, size_t seq_len,
2608 const u8 *key, size_t key_len)
2609 {
2610 struct i802_bss *bss = priv;
2611 struct wpa_driver_nl80211_data *drv = bss->drv;
2612 int ifindex = if_nametoindex(ifname);
2613 struct nl_msg *msg;
2614 int ret;
2615
2616 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2617 "set_tx=%d seq_len=%lu key_len=%lu",
2618 __func__, ifindex, alg, addr, key_idx, set_tx,
2619 (unsigned long) seq_len, (unsigned long) key_len);
2620
2621 msg = nlmsg_alloc();
2622 if (!msg)
2623 return -ENOMEM;
2624
2625 if (alg == WPA_ALG_NONE) {
2626 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2627 0, NL80211_CMD_DEL_KEY, 0);
2628 } else {
2629 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2630 0, NL80211_CMD_NEW_KEY, 0);
2631 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2632 switch (alg) {
2633 case WPA_ALG_WEP:
2634 if (key_len == 5)
2635 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2636 WLAN_CIPHER_SUITE_WEP40);
2637 else
2638 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2639 WLAN_CIPHER_SUITE_WEP104);
2640 break;
2641 case WPA_ALG_TKIP:
2642 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2643 WLAN_CIPHER_SUITE_TKIP);
2644 break;
2645 case WPA_ALG_CCMP:
2646 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2647 WLAN_CIPHER_SUITE_CCMP);
2648 break;
2649 case WPA_ALG_IGTK:
2650 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2651 WLAN_CIPHER_SUITE_AES_CMAC);
2652 break;
2653 default:
2654 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2655 "algorithm %d", __func__, alg);
2656 nlmsg_free(msg);
2657 return -1;
2658 }
2659 }
2660
2661 if (seq && seq_len)
2662 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2663
2664 if (addr && !is_broadcast_ether_addr(addr)) {
2665 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2666 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2667
2668 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2669 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
2670 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
2671 NL80211_KEYTYPE_GROUP);
2672 }
2673 } else if (addr && is_broadcast_ether_addr(addr)) {
2674 struct nl_msg *types;
2675 int err;
2676 wpa_printf(MSG_DEBUG, " broadcast key");
2677 types = nlmsg_alloc();
2678 if (!types)
2679 goto nla_put_failure;
2680 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
2681 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
2682 types);
2683 nlmsg_free(types);
2684 if (err)
2685 goto nla_put_failure;
2686 }
2687 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2688 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2689
2690 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2691 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2692 ret = 0;
2693 if (ret)
2694 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2695 ret, strerror(-ret));
2696
2697 /*
2698 * If we failed or don't need to set the default TX key (below),
2699 * we're done here.
2700 */
2701 if (ret || !set_tx || alg == WPA_ALG_NONE)
2702 return ret;
2703 if (drv->nlmode == NL80211_IFTYPE_AP && addr &&
2704 !is_broadcast_ether_addr(addr))
2705 return ret;
2706
2707 msg = nlmsg_alloc();
2708 if (!msg)
2709 return -ENOMEM;
2710
2711 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2712 0, NL80211_CMD_SET_KEY, 0);
2713 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2714 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2715 if (alg == WPA_ALG_IGTK)
2716 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2717 else
2718 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2719 if (addr && is_broadcast_ether_addr(addr)) {
2720 struct nl_msg *types;
2721 int err;
2722 types = nlmsg_alloc();
2723 if (!types)
2724 goto nla_put_failure;
2725 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
2726 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
2727 types);
2728 nlmsg_free(types);
2729 if (err)
2730 goto nla_put_failure;
2731 } else if (addr) {
2732 struct nl_msg *types;
2733 int err;
2734 types = nlmsg_alloc();
2735 if (!types)
2736 goto nla_put_failure;
2737 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
2738 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
2739 types);
2740 nlmsg_free(types);
2741 if (err)
2742 goto nla_put_failure;
2743 }
2744
2745 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2746 if (ret == -ENOENT)
2747 ret = 0;
2748 if (ret)
2749 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2750 "err=%d %s)", ret, strerror(-ret));
2751 return ret;
2752
2753 nla_put_failure:
2754 return -ENOBUFS;
2755 }
2756
2757
2758 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2759 int key_idx, int defkey,
2760 const u8 *seq, size_t seq_len,
2761 const u8 *key, size_t key_len)
2762 {
2763 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2764 if (!key_attr)
2765 return -1;
2766
2767 if (defkey && alg == WPA_ALG_IGTK)
2768 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2769 else if (defkey)
2770 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2771
2772 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2773
2774 switch (alg) {
2775 case WPA_ALG_WEP:
2776 if (key_len == 5)
2777 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2778 WLAN_CIPHER_SUITE_WEP40);
2779 else
2780 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2781 WLAN_CIPHER_SUITE_WEP104);
2782 break;
2783 case WPA_ALG_TKIP:
2784 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2785 break;
2786 case WPA_ALG_CCMP:
2787 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2788 break;
2789 case WPA_ALG_IGTK:
2790 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2791 WLAN_CIPHER_SUITE_AES_CMAC);
2792 break;
2793 default:
2794 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2795 "algorithm %d", __func__, alg);
2796 return -1;
2797 }
2798
2799 if (seq && seq_len)
2800 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2801
2802 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2803
2804 nla_nest_end(msg, key_attr);
2805
2806 return 0;
2807 nla_put_failure:
2808 return -1;
2809 }
2810
2811
2812 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2813 struct nl_msg *msg)
2814 {
2815 int i, privacy = 0;
2816 struct nlattr *nl_keys, *nl_key;
2817
2818 for (i = 0; i < 4; i++) {
2819 if (!params->wep_key[i])
2820 continue;
2821 privacy = 1;
2822 break;
2823 }
2824 if (params->wps == WPS_MODE_PRIVACY)
2825 privacy = 1;
2826 if (params->pairwise_suite &&
2827 params->pairwise_suite != WPA_CIPHER_NONE)
2828 privacy = 1;
2829
2830 if (!privacy)
2831 return 0;
2832
2833 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2834
2835 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2836 if (!nl_keys)
2837 goto nla_put_failure;
2838
2839 for (i = 0; i < 4; i++) {
2840 if (!params->wep_key[i])
2841 continue;
2842
2843 nl_key = nla_nest_start(msg, i);
2844 if (!nl_key)
2845 goto nla_put_failure;
2846
2847 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2848 params->wep_key[i]);
2849 if (params->wep_key_len[i] == 5)
2850 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2851 WLAN_CIPHER_SUITE_WEP40);
2852 else
2853 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2854 WLAN_CIPHER_SUITE_WEP104);
2855
2856 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2857
2858 if (i == params->wep_tx_keyidx)
2859 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2860
2861 nla_nest_end(msg, nl_key);
2862 }
2863 nla_nest_end(msg, nl_keys);
2864
2865 return 0;
2866
2867 nla_put_failure:
2868 return -ENOBUFS;
2869 }
2870
2871
2872 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2873 const u8 *addr, int cmd, u16 reason_code,
2874 int local_state_change)
2875 {
2876 int ret = -1;
2877 struct nl_msg *msg;
2878
2879 msg = nlmsg_alloc();
2880 if (!msg)
2881 return -1;
2882
2883 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2884
2885 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2886 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2887 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2888 if (local_state_change)
2889 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2890
2891 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2892 msg = NULL;
2893 if (ret) {
2894 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2895 "(%s)", ret, strerror(-ret));
2896 goto nla_put_failure;
2897 }
2898 ret = 0;
2899
2900 nla_put_failure:
2901 nlmsg_free(msg);
2902 return ret;
2903 }
2904
2905
2906 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2907 const u8 *addr, int reason_code)
2908 {
2909 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2910 __func__, MAC2STR(addr), reason_code);
2911 drv->associated = 0;
2912 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2913 reason_code, 0);
2914 }
2915
2916
2917 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2918 int reason_code)
2919 {
2920 struct i802_bss *bss = priv;
2921 struct wpa_driver_nl80211_data *drv = bss->drv;
2922 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2923 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2924 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2925 __func__, MAC2STR(addr), reason_code);
2926 drv->associated = 0;
2927 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2928 reason_code, 0);
2929 }
2930
2931
2932 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2933 int reason_code)
2934 {
2935 struct i802_bss *bss = priv;
2936 struct wpa_driver_nl80211_data *drv = bss->drv;
2937 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2938 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2939 wpa_printf(MSG_DEBUG, "%s", __func__);
2940 drv->associated = 0;
2941 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2942 reason_code, 0);
2943 }
2944
2945
2946 static int wpa_driver_nl80211_authenticate(
2947 void *priv, struct wpa_driver_auth_params *params)
2948 {
2949 struct i802_bss *bss = priv;
2950 struct wpa_driver_nl80211_data *drv = bss->drv;
2951 int ret = -1, i;
2952 struct nl_msg *msg;
2953 enum nl80211_auth_type type;
2954 int count = 0;
2955
2956 drv->associated = 0;
2957 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2958 /* FIX: IBSS mode */
2959 if (drv->nlmode != NL80211_IFTYPE_STATION &&
2960 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2961 return -1;
2962
2963 retry:
2964 msg = nlmsg_alloc();
2965 if (!msg)
2966 return -1;
2967
2968 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2969 drv->ifindex);
2970
2971 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2972 NL80211_CMD_AUTHENTICATE, 0);
2973
2974 for (i = 0; i < 4; i++) {
2975 if (!params->wep_key[i])
2976 continue;
2977 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2978 NULL, i,
2979 i == params->wep_tx_keyidx, NULL, 0,
2980 params->wep_key[i],
2981 params->wep_key_len[i]);
2982 if (params->wep_tx_keyidx != i)
2983 continue;
2984 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2985 params->wep_key[i], params->wep_key_len[i])) {
2986 nlmsg_free(msg);
2987 return -1;
2988 }
2989 }
2990
2991 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2992 if (params->bssid) {
2993 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2994 MAC2STR(params->bssid));
2995 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2996 }
2997 if (params->freq) {
2998 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2999 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3000 }
3001 if (params->ssid) {
3002 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3003 params->ssid, params->ssid_len);
3004 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3005 params->ssid);
3006 }
3007 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
3008 if (params->ie)
3009 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3010 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3011 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3012 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3013 type = NL80211_AUTHTYPE_SHARED_KEY;
3014 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3015 type = NL80211_AUTHTYPE_NETWORK_EAP;
3016 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3017 type = NL80211_AUTHTYPE_FT;
3018 else
3019 goto nla_put_failure;
3020 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3021 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3022 if (params->local_state_change) {
3023 wpa_printf(MSG_DEBUG, " * Local state change only");
3024 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3025 }
3026
3027 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3028 msg = NULL;
3029 if (ret) {
3030 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3031 "(%s)", ret, strerror(-ret));
3032 count++;
3033 if (ret == -EALREADY && count == 1 && params->bssid &&
3034 !params->local_state_change) {
3035 /*
3036 * mac80211 does not currently accept new
3037 * authentication if we are already authenticated. As a
3038 * workaround, force deauthentication and try again.
3039 */
3040 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3041 "after forced deauthentication");
3042 wpa_driver_nl80211_deauthenticate(
3043 bss, params->bssid,
3044 WLAN_REASON_PREV_AUTH_NOT_VALID);
3045 nlmsg_free(msg);
3046 goto retry;
3047 }
3048 goto nla_put_failure;
3049 }
3050 ret = 0;
3051 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3052 "successfully");
3053
3054 nla_put_failure:
3055 nlmsg_free(msg);
3056 return ret;
3057 }
3058
3059
3060 struct phy_info_arg {
3061 u16 *num_modes;
3062 struct hostapd_hw_modes *modes;
3063 };
3064
3065 static int phy_info_handler(struct nl_msg *msg, void *arg)
3066 {
3067 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3068 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3069 struct phy_info_arg *phy_info = arg;
3070
3071 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
3072
3073 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
3074 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3075 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
3076 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
3077 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
3078 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
3079 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
3080 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
3081 };
3082
3083 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
3084 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
3085 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
3086 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
3087 };
3088
3089 struct nlattr *nl_band;
3090 struct nlattr *nl_freq;
3091 struct nlattr *nl_rate;
3092 int rem_band, rem_freq, rem_rate;
3093 struct hostapd_hw_modes *mode;
3094 int idx, mode_is_set;
3095
3096 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3097 genlmsg_attrlen(gnlh, 0), NULL);
3098
3099 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
3100 return NL_SKIP;
3101
3102 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
3103 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
3104 if (!mode)
3105 return NL_SKIP;
3106 phy_info->modes = mode;
3107
3108 mode_is_set = 0;
3109
3110 mode = &phy_info->modes[*(phy_info->num_modes)];
3111 memset(mode, 0, sizeof(*mode));
3112 *(phy_info->num_modes) += 1;
3113
3114 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
3115 nla_len(nl_band), NULL);
3116
3117 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
3118 mode->ht_capab = nla_get_u16(
3119 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
3120 }
3121
3122 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
3123 mode->a_mpdu_params |= nla_get_u8(
3124 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
3125 0x03;
3126 }
3127
3128 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
3129 mode->a_mpdu_params |= nla_get_u8(
3130 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
3131 2;
3132 }
3133
3134 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
3135 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
3136 u8 *mcs;
3137 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
3138 os_memcpy(mode->mcs_set, mcs, 16);
3139 }
3140
3141 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3142 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3143 nla_len(nl_freq), freq_policy);
3144 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3145 continue;
3146 mode->num_channels++;
3147 }
3148
3149 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
3150 if (!mode->channels)
3151 return NL_SKIP;
3152
3153 idx = 0;
3154
3155 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3156 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3157 nla_len(nl_freq), freq_policy);
3158 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3159 continue;
3160
3161 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
3162 mode->channels[idx].flag = 0;
3163
3164 if (!mode_is_set) {
3165 /* crude heuristic */
3166 if (mode->channels[idx].freq < 4000)
3167 mode->mode = HOSTAPD_MODE_IEEE80211B;
3168 else
3169 mode->mode = HOSTAPD_MODE_IEEE80211A;
3170 mode_is_set = 1;
3171 }
3172
3173 /* crude heuristic */
3174 if (mode->channels[idx].freq < 4000)
3175 if (mode->channels[idx].freq == 2484)
3176 mode->channels[idx].chan = 14;
3177 else
3178 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
3179 else
3180 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
3181
3182 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3183 mode->channels[idx].flag |=
3184 HOSTAPD_CHAN_DISABLED;
3185 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
3186 mode->channels[idx].flag |=
3187 HOSTAPD_CHAN_PASSIVE_SCAN;
3188 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
3189 mode->channels[idx].flag |=
3190 HOSTAPD_CHAN_NO_IBSS;
3191 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
3192 mode->channels[idx].flag |=
3193 HOSTAPD_CHAN_RADAR;
3194
3195 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
3196 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3197 mode->channels[idx].max_tx_power =
3198 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
3199
3200 idx++;
3201 }
3202
3203 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3204 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3205 nla_len(nl_rate), rate_policy);
3206 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3207 continue;
3208 mode->num_rates++;
3209 }
3210
3211 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
3212 if (!mode->rates)
3213 return NL_SKIP;
3214
3215 idx = 0;
3216
3217 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3218 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3219 nla_len(nl_rate), rate_policy);
3220 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3221 continue;
3222 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3223
3224 /* crude heuristic */
3225 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3226 mode->rates[idx] > 200)
3227 mode->mode = HOSTAPD_MODE_IEEE80211G;
3228
3229 idx++;
3230 }
3231 }
3232
3233 return NL_SKIP;
3234 }
3235
3236 static struct hostapd_hw_modes *
3237 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3238 {
3239 u16 m;
3240 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3241 int i, mode11g_idx = -1;
3242
3243 /* If only 802.11g mode is included, use it to construct matching
3244 * 802.11b mode data. */
3245
3246 for (m = 0; m < *num_modes; m++) {
3247 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3248 return modes; /* 802.11b already included */
3249 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3250 mode11g_idx = m;
3251 }
3252
3253 if (mode11g_idx < 0)
3254 return modes; /* 2.4 GHz band not supported at all */
3255
3256 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3257 if (nmodes == NULL)
3258 return modes; /* Could not add 802.11b mode */
3259
3260 mode = &nmodes[*num_modes];
3261 os_memset(mode, 0, sizeof(*mode));
3262 (*num_modes)++;
3263 modes = nmodes;
3264
3265 mode->mode = HOSTAPD_MODE_IEEE80211B;
3266
3267 mode11g = &modes[mode11g_idx];
3268 mode->num_channels = mode11g->num_channels;
3269 mode->channels = os_malloc(mode11g->num_channels *
3270 sizeof(struct hostapd_channel_data));
3271 if (mode->channels == NULL) {
3272 (*num_modes)--;
3273 return modes; /* Could not add 802.11b mode */
3274 }
3275 os_memcpy(mode->channels, mode11g->channels,
3276 mode11g->num_channels * sizeof(struct hostapd_channel_data));
3277
3278 mode->num_rates = 0;
3279 mode->rates = os_malloc(4 * sizeof(int));
3280 if (mode->rates == NULL) {
3281 os_free(mode->channels);
3282 (*num_modes)--;
3283 return modes; /* Could not add 802.11b mode */
3284 }
3285
3286 for (i = 0; i < mode11g->num_rates; i++) {
3287 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3288 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3289 continue;
3290 mode->rates[mode->num_rates] = mode11g->rates[i];
3291 mode->num_rates++;
3292 if (mode->num_rates == 4)
3293 break;
3294 }
3295
3296 if (mode->num_rates == 0) {
3297 os_free(mode->channels);
3298 os_free(mode->rates);
3299 (*num_modes)--;
3300 return modes; /* No 802.11b rates */
3301 }
3302
3303 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3304 "information");
3305
3306 return modes;
3307 }
3308
3309
3310 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
3311 int end)
3312 {
3313 int c;
3314
3315 for (c = 0; c < mode->num_channels; c++) {
3316 struct hostapd_channel_data *chan = &mode->channels[c];
3317 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
3318 chan->flag |= HOSTAPD_CHAN_HT40;
3319 }
3320 }
3321
3322
3323 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
3324 int end)
3325 {
3326 int c;
3327
3328 for (c = 0; c < mode->num_channels; c++) {
3329 struct hostapd_channel_data *chan = &mode->channels[c];
3330 if (!(chan->flag & HOSTAPD_CHAN_HT40))
3331 continue;
3332 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
3333 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
3334 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
3335 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
3336 }
3337 }
3338
3339
3340 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
3341 struct phy_info_arg *results)
3342 {
3343 u32 start, end, max_bw;
3344 u16 m;
3345
3346 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
3347 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
3348 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
3349 return;
3350
3351 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
3352 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
3353 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
3354
3355 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
3356 start, end, max_bw);
3357 if (max_bw < 40)
3358 return;
3359
3360 for (m = 0; m < *results->num_modes; m++) {
3361 if (!(results->modes[m].ht_capab &
3362 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
3363 continue;
3364 nl80211_set_ht40_mode(&results->modes[m], start, end);
3365 }
3366 }
3367
3368
3369 static void nl80211_reg_rule_sec(struct nlattr *tb[],
3370 struct phy_info_arg *results)
3371 {
3372 u32 start, end, max_bw;
3373 u16 m;
3374
3375 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
3376 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
3377 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
3378 return;
3379
3380 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
3381 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
3382 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
3383
3384 if (max_bw < 20)
3385 return;
3386
3387 for (m = 0; m < *results->num_modes; m++) {
3388 if (!(results->modes[m].ht_capab &
3389 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
3390 continue;
3391 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
3392 }
3393 }
3394
3395
3396 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
3397 {
3398 struct phy_info_arg *results = arg;
3399 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3400 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3401 struct nlattr *nl_rule;
3402 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
3403 int rem_rule;
3404 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3405 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3406 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3407 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3408 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3409 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3410 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3411 };
3412
3413 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3414 genlmsg_attrlen(gnlh, 0), NULL);
3415 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
3416 !tb_msg[NL80211_ATTR_REG_RULES]) {
3417 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
3418 "available");
3419 return NL_SKIP;
3420 }
3421
3422 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
3423 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
3424
3425 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
3426 {
3427 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
3428 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
3429 nl80211_reg_rule_ht40(tb_rule, results);
3430 }
3431
3432 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
3433 {
3434 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
3435 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
3436 nl80211_reg_rule_sec(tb_rule, results);
3437 }
3438
3439 return NL_SKIP;
3440 }
3441
3442
3443 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
3444 struct phy_info_arg *results)
3445 {
3446 struct nl_msg *msg;
3447
3448 msg = nlmsg_alloc();
3449 if (!msg)
3450 return -ENOMEM;
3451
3452 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3453 0, NL80211_CMD_GET_REG, 0);
3454 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
3455 }
3456
3457
3458 static struct hostapd_hw_modes *
3459 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3460 {
3461 struct i802_bss *bss = priv;
3462 struct wpa_driver_nl80211_data *drv = bss->drv;
3463 struct nl_msg *msg;
3464 struct phy_info_arg result = {
3465 .num_modes = num_modes,
3466 .modes = NULL,
3467 };
3468
3469 *num_modes = 0;
3470 *flags = 0;
3471
3472 msg = nlmsg_alloc();
3473 if (!msg)
3474 return NULL;
3475
3476 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3477 0, NL80211_CMD_GET_WIPHY, 0);
3478
3479 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3480
3481 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
3482 nl80211_set_ht40_flags(drv, &result);
3483 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3484 }
3485 nla_put_failure:
3486 return NULL;
3487 }
3488
3489
3490 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3491 const void *data, size_t len,
3492 int encrypt)
3493 {
3494 __u8 rtap_hdr[] = {
3495 0x00, 0x00, /* radiotap version */
3496 0x0e, 0x00, /* radiotap length */
3497 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3498 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3499 0x00, /* padding */
3500 0x00, 0x00, /* RX and TX flags to indicate that */
3501 0x00, 0x00, /* this is the injected frame directly */
3502 };
3503 struct iovec iov[2] = {
3504 {
3505 .iov_base = &rtap_hdr,
3506 .iov_len = sizeof(rtap_hdr),
3507 },
3508 {
3509 .iov_base = (void *) data,
3510 .iov_len = len,
3511 }
3512 };
3513 struct msghdr msg = {
3514 .msg_name = NULL,
3515 .msg_namelen = 0,
3516 .msg_iov = iov,
3517 .msg_iovlen = 2,
3518 .msg_control = NULL,
3519 .msg_controllen = 0,
3520 .msg_flags = 0,
3521 };
3522 int res;
3523
3524 if (encrypt)
3525 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3526
3527 res = sendmsg(drv->monitor_sock, &msg, 0);
3528 if (res < 0) {
3529 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
3530 return -1;
3531 }
3532 return 0;
3533 }
3534
3535
3536 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3537 size_t data_len)
3538 {
3539 struct i802_bss *bss = priv;
3540 struct wpa_driver_nl80211_data *drv = bss->drv;
3541 struct ieee80211_mgmt *mgmt;
3542 int encrypt = 1;
3543 u16 fc;
3544
3545 mgmt = (struct ieee80211_mgmt *) data;
3546 fc = le_to_host16(mgmt->frame_control);
3547
3548 if (drv->nlmode == NL80211_IFTYPE_STATION &&
3549 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3550 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3551 /*
3552 * The use of last_mgmt_freq is a bit of a hack,
3553 * but it works due to the single-threaded nature
3554 * of wpa_supplicant.
3555 */
3556 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq, 0,
3557 data, data_len, NULL);
3558 }
3559
3560 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3561 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3562 /*
3563 * Only one of the authentication frame types is encrypted.
3564 * In order for static WEP encryption to work properly (i.e.,
3565 * to not encrypt the frame), we need to tell mac80211 about
3566 * the frames that must not be encrypted.
3567 */
3568 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3569 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3570 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3571 encrypt = 0;
3572 }
3573
3574 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3575 }
3576
3577
3578 static int wpa_driver_nl80211_set_beacon(void *priv,
3579 const u8 *head, size_t head_len,
3580 const u8 *tail, size_t tail_len,
3581 int dtim_period, int beacon_int)
3582 {
3583 struct i802_bss *bss = priv;
3584 struct wpa_driver_nl80211_data *drv = bss->drv;
3585 struct nl_msg *msg;
3586 u8 cmd = NL80211_CMD_NEW_BEACON;
3587 int ret;
3588 int beacon_set;
3589 int ifindex = if_nametoindex(bss->ifname);
3590
3591 beacon_set = bss->beacon_set;
3592
3593 msg = nlmsg_alloc();
3594 if (!msg)
3595 return -ENOMEM;
3596
3597 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3598 beacon_set);
3599 if (beacon_set)
3600 cmd = NL80211_CMD_SET_BEACON;
3601
3602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3603 0, cmd, 0);
3604 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3605 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3607 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3608 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3609
3610 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3611 if (ret) {
3612 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3613 ret, strerror(-ret));
3614 } else {
3615 bss->beacon_set = 1;
3616 }
3617 return ret;
3618 nla_put_failure:
3619 return -ENOBUFS;
3620 }
3621
3622
3623 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3624 int freq, int ht_enabled,
3625 int sec_channel_offset)
3626 {
3627 struct nl_msg *msg;
3628 int ret;
3629
3630 msg = nlmsg_alloc();
3631 if (!msg)
3632 return -1;
3633
3634 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3635 NL80211_CMD_SET_WIPHY, 0);
3636
3637 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3638 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3639 if (ht_enabled) {
3640 switch (sec_channel_offset) {
3641 case -1:
3642 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3643 NL80211_CHAN_HT40MINUS);
3644 break;
3645 case 1:
3646 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3647 NL80211_CHAN_HT40PLUS);
3648 break;
3649 default:
3650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3651 NL80211_CHAN_HT20);
3652 break;
3653 }
3654 }
3655
3656 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3657 if (ret == 0)
3658 return 0;
3659 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3660 "%d (%s)", freq, ret, strerror(-ret));
3661 nla_put_failure:
3662 return -1;
3663 }
3664
3665
3666 static int wpa_driver_nl80211_sta_add(void *priv,
3667 struct hostapd_sta_add_params *params)
3668 {
3669 struct i802_bss *bss = priv;
3670 struct wpa_driver_nl80211_data *drv = bss->drv;
3671 struct nl_msg *msg;
3672 int ret = -ENOBUFS;
3673
3674 msg = nlmsg_alloc();
3675 if (!msg)
3676 return -ENOMEM;
3677
3678 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3679 0, NL80211_CMD_NEW_STATION, 0);
3680
3681 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3682 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3683 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3684 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3685 params->supp_rates);
3686 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3687 params->listen_interval);
3688 if (params->ht_capabilities) {
3689 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3690 sizeof(*params->ht_capabilities),
3691 params->ht_capabilities);
3692 }
3693
3694 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3695 if (ret)
3696 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3697 "result: %d (%s)", ret, strerror(-ret));
3698 if (ret == -EEXIST)
3699 ret = 0;
3700 nla_put_failure:
3701 return ret;
3702 }
3703
3704
3705 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3706 {
3707 struct i802_bss *bss = priv;
3708 struct wpa_driver_nl80211_data *drv = bss->drv;
3709 struct nl_msg *msg;
3710 int ret;
3711
3712 msg = nlmsg_alloc();
3713 if (!msg)
3714 return -ENOMEM;
3715
3716 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3717 0, NL80211_CMD_DEL_STATION, 0);
3718
3719 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3720 if_nametoindex(bss->ifname));
3721 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3722
3723 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3724 if (ret == -ENOENT)
3725 return 0;
3726 return ret;
3727 nla_put_failure:
3728 return -ENOBUFS;
3729 }
3730
3731
3732 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3733 int ifidx)
3734 {
3735 struct nl_msg *msg;
3736
3737 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3738
3739 #ifdef HOSTAPD
3740 /* stop listening for EAPOL on this interface */
3741 del_ifidx(drv, ifidx);
3742 #endif /* HOSTAPD */
3743
3744 msg = nlmsg_alloc();
3745 if (!msg)
3746 goto nla_put_failure;
3747
3748 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3749 0, NL80211_CMD_DEL_INTERFACE, 0);
3750 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3751
3752 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3753 return;
3754 nla_put_failure:
3755 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3756 }
3757
3758
3759 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3760 const char *ifname,
3761 enum nl80211_iftype iftype,
3762 const u8 *addr, int wds)
3763 {
3764 struct nl_msg *msg, *flags = NULL;
3765 int ifidx;
3766 int ret = -ENOBUFS;
3767
3768 msg = nlmsg_alloc();
3769 if (!msg)
3770 return -1;
3771
3772 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3773 0, NL80211_CMD_NEW_INTERFACE, 0);
3774 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3775 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3776 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3777
3778 if (iftype == NL80211_IFTYPE_MONITOR) {
3779 int err;
3780
3781 flags = nlmsg_alloc();
3782 if (!flags)
3783 goto nla_put_failure;
3784
3785 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3786
3787 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3788
3789 nlmsg_free(flags);
3790
3791 if (err)
3792 goto nla_put_failure;
3793 } else if (wds) {
3794 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3795 }
3796
3797 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3798 if (ret) {
3799 nla_put_failure:
3800 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3801 ifname, ret, strerror(-ret));
3802 return ret;
3803 }
3804
3805 ifidx = if_nametoindex(ifname);
3806 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3807 ifname, ifidx);
3808
3809 if (ifidx <= 0)
3810 return -1;
3811
3812 #ifdef HOSTAPD
3813 /* start listening for EAPOL on this interface */
3814 add_ifidx(drv, ifidx);
3815 #endif /* HOSTAPD */
3816
3817 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3818 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3819 nl80211_remove_iface(drv, ifidx);
3820 return -1;
3821 }
3822
3823 return ifidx;
3824 }
3825
3826
3827 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3828 const char *ifname, enum nl80211_iftype iftype,
3829 const u8 *addr, int wds)
3830 {
3831 int ret;
3832
3833 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3834
3835 /* if error occured and interface exists already */
3836 if (ret == -ENFILE && if_nametoindex(ifname)) {
3837 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3838
3839 /* Try to remove the interface that was already there. */
3840 nl80211_remove_iface(drv, if_nametoindex(ifname));
3841
3842 /* Try to create the interface again */
3843 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3844 wds);
3845 }
3846
3847 if (ret >= 0 && drv->disable_11b_rates)
3848 nl80211_disable_11b_rates(drv, ret, 1);
3849
3850 return ret;
3851 }
3852
3853
3854 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3855 {
3856 struct ieee80211_hdr *hdr;
3857 u16 fc;
3858 union wpa_event_data event;
3859
3860 hdr = (struct ieee80211_hdr *) buf;
3861 fc = le_to_host16(hdr->frame_control);
3862
3863 os_memset(&event, 0, sizeof(event));
3864 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3865 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3866 event.tx_status.dst = hdr->addr1;
3867 event.tx_status.data = buf;
3868 event.tx_status.data_len = len;
3869 event.tx_status.ack = ok;
3870 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3871 }
3872
3873
3874 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3875 u8 *buf, size_t len)
3876 {
3877 union wpa_event_data event;
3878 os_memset(&event, 0, sizeof(event));
3879 event.rx_from_unknown.frame = buf;
3880 event.rx_from_unknown.len = len;
3881 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3882 }
3883
3884
3885 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3886 u8 *buf, size_t len, int datarate, int ssi_signal)
3887 {
3888 struct ieee80211_hdr *hdr;
3889 u16 fc;
3890 union wpa_event_data event;
3891
3892 hdr = (struct ieee80211_hdr *) buf;
3893 fc = le_to_host16(hdr->frame_control);
3894
3895 switch (WLAN_FC_GET_TYPE(fc)) {
3896 case WLAN_FC_TYPE_MGMT:
3897 os_memset(&event, 0, sizeof(event));
3898 event.rx_mgmt.frame = buf;
3899 event.rx_mgmt.frame_len = len;
3900 event.rx_mgmt.datarate = datarate;
3901 event.rx_mgmt.ssi_signal = ssi_signal;
3902 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3903 break;
3904 case WLAN_FC_TYPE_CTRL:
3905 /* can only get here with PS-Poll frames */
3906 wpa_printf(MSG_DEBUG, "CTRL");
3907 from_unknown_sta(drv, buf, len);
3908 break;
3909 case WLAN_FC_TYPE_DATA:
3910 from_unknown_sta(drv, buf, len);
3911 break;
3912 }
3913 }
3914
3915
3916 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3917 {
3918 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3919 int len;
3920 unsigned char buf[3000];
3921 struct ieee80211_radiotap_iterator iter;
3922 int ret;
3923 int datarate = 0, ssi_signal = 0;
3924 int injected = 0, failed = 0, rxflags = 0;
3925
3926 len = recv(sock, buf, sizeof(buf), 0);
3927 if (len < 0) {
3928 perror("recv");
3929 return;
3930 }
3931
3932 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3933 printf("received invalid radiotap frame\n");
3934 return;
3935 }
3936
3937 while (1) {
3938 ret = ieee80211_radiotap_iterator_next(&iter);
3939 if (ret == -ENOENT)
3940 break;
3941 if (ret) {
3942 printf("received invalid radiotap frame (%d)\n", ret);
3943 return;
3944 }
3945 switch (iter.this_arg_index) {
3946 case IEEE80211_RADIOTAP_FLAGS:
3947 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3948 len -= 4;
3949 break;
3950 case IEEE80211_RADIOTAP_RX_FLAGS:
3951 rxflags = 1;
3952 break;
3953 case IEEE80211_RADIOTAP_TX_FLAGS:
3954 injected = 1;
3955 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3956 IEEE80211_RADIOTAP_F_TX_FAIL;
3957 break;
3958 case IEEE80211_RADIOTAP_DATA_RETRIES:
3959 break;
3960 case IEEE80211_RADIOTAP_CHANNEL:
3961 /* TODO: convert from freq/flags to channel number */
3962 break;
3963 case IEEE80211_RADIOTAP_RATE:
3964 datarate = *iter.this_arg * 5;
3965 break;
3966 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3967 ssi_signal = *iter.this_arg;
3968 break;
3969 }
3970 }
3971
3972 if (rxflags && injected)
3973 return;
3974
3975 if (!injected)
3976 handle_frame(drv, buf + iter.max_length,
3977 len - iter.max_length, datarate, ssi_signal);
3978 else
3979 handle_tx_callback(drv->ctx, buf + iter.max_length,
3980 len - iter.max_length, !failed);
3981 }
3982
3983
3984 /*
3985 * we post-process the filter code later and rewrite
3986 * this to the offset to the last instruction
3987 */
3988 #define PASS 0xFF
3989 #define FAIL 0xFE
3990
3991 static struct sock_filter msock_filter_insns[] = {
3992 /*
3993 * do a little-endian load of the radiotap length field
3994 */
3995 /* load lower byte into A */
3996 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3997 /* put it into X (== index register) */
3998 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3999 /* load upper byte into A */
4000 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
4001 /* left-shift it by 8 */
4002 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
4003 /* or with X */
4004 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
4005 /* put result into X */
4006 BPF_STMT(BPF_MISC| BPF_TAX, 0),
4007
4008 /*
4009 * Allow management frames through, this also gives us those
4010 * management frames that we sent ourselves with status
4011 */
4012 /* load the lower byte of the IEEE 802.11 frame control field */
4013 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4014 /* mask off frame type and version */
4015 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
4016 /* accept frame if it's both 0, fall through otherwise */
4017 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
4018
4019 /*
4020 * TODO: add a bit to radiotap RX flags that indicates
4021 * that the sending station is not associated, then
4022 * add a filter here that filters on our DA and that flag
4023 * to allow us to deauth frames to that bad station.
4024 *
4025 * For now allow all To DS data frames through.
4026 */
4027 /* load the IEEE 802.11 frame control field */
4028 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
4029 /* mask off frame type, version and DS status */
4030 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
4031 /* accept frame if version 0, type 2 and To DS, fall through otherwise
4032 */
4033 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
4034
4035 #if 0
4036 /*
4037 * drop non-data frames
4038 */
4039 /* load the lower byte of the frame control field */
4040 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4041 /* mask off QoS bit */
4042 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
4043 /* drop non-data frames */
4044 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
4045 #endif
4046 /* load the upper byte of the frame control field */
4047 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
4048 /* mask off toDS/fromDS */
4049 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
4050 /* accept WDS frames */
4051 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
4052
4053 /*
4054 * add header length to index
4055 */
4056 /* load the lower byte of the frame control field */
4057 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
4058 /* mask off QoS bit */
4059 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
4060 /* right shift it by 6 to give 0 or 2 */
4061 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
4062 /* add data frame header length */
4063 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
4064 /* add index, was start of 802.11 header */
4065 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
4066 /* move to index, now start of LL header */
4067 BPF_STMT(BPF_MISC | BPF_TAX, 0),
4068
4069 /*
4070 * Accept empty data frames, we use those for
4071 * polling activity.
4072 */
4073 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
4074 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
4075
4076 /*
4077 * Accept EAPOL frames
4078 */
4079 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
4080 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
4081 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
4082 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
4083
4084 /* keep these last two statements or change the code below */
4085 /* return 0 == "DROP" */
4086 BPF_STMT(BPF_RET | BPF_K, 0),
4087 /* return ~0 == "keep all" */
4088 BPF_STMT(BPF_RET | BPF_K, ~0),
4089 };
4090
4091 static struct sock_fprog msock_filter = {
4092 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
4093 .filter = msock_filter_insns,
4094 };
4095
4096
4097 static int add_monitor_filter(int s)
4098 {
4099 int idx;
4100
4101 /* rewrite all PASS/FAIL jump offsets */
4102 for (idx = 0; idx < msock_filter.len; idx++) {
4103 struct sock_filter *insn = &msock_filter_insns[idx];
4104
4105 if (BPF_CLASS(insn->code) == BPF_JMP) {
4106 if (insn->code == (BPF_JMP|BPF_JA)) {
4107 if (insn->k == PASS)
4108 insn->k = msock_filter.len - idx - 2;
4109 else if (insn->k == FAIL)
4110 insn->k = msock_filter.len - idx - 3;
4111 }
4112
4113 if (insn->jt == PASS)
4114 insn->jt = msock_filter.len - idx - 2;
4115 else if (insn->jt == FAIL)
4116 insn->jt = msock_filter.len - idx - 3;
4117
4118 if (insn->jf == PASS)
4119 insn->jf = msock_filter.len - idx - 2;
4120 else if (insn->jf == FAIL)
4121 insn->jf = msock_filter.len - idx - 3;
4122 }
4123 }
4124
4125 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
4126 &msock_filter, sizeof(msock_filter))) {
4127 perror("SO_ATTACH_FILTER");
4128 return -1;
4129 }
4130
4131 return 0;
4132 }
4133
4134
4135 static void nl80211_remove_monitor_interface(
4136 struct wpa_driver_nl80211_data *drv)
4137 {
4138 if (drv->monitor_ifidx >= 0) {
4139 nl80211_remove_iface(drv, drv->monitor_ifidx);
4140 drv->monitor_ifidx = -1;
4141 }
4142 if (drv->monitor_sock >= 0) {
4143 eloop_unregister_read_sock(drv->monitor_sock);
4144 close(drv->monitor_sock);
4145 drv->monitor_sock = -1;
4146 }
4147 }
4148
4149
4150 static int
4151 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
4152 {
4153 char buf[IFNAMSIZ];
4154 struct sockaddr_ll ll;
4155 int optval;
4156 socklen_t optlen;
4157
4158 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
4159 buf[IFNAMSIZ - 1] = '\0';
4160
4161 drv->monitor_ifidx =
4162 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
4163 0);
4164
4165 if (drv->monitor_ifidx < 0)
4166 return -1;
4167
4168 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
4169 goto error;
4170
4171 memset(&ll, 0, sizeof(ll));
4172 ll.sll_family = AF_PACKET;
4173 ll.sll_ifindex = drv->monitor_ifidx;
4174 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
4175 if (drv->monitor_sock < 0) {
4176 perror("socket[PF_PACKET,SOCK_RAW]");
4177 goto error;
4178 }
4179
4180 if (add_monitor_filter(drv->monitor_sock)) {
4181 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
4182 "interface; do filtering in user space");
4183 /* This works, but will cost in performance. */
4184 }
4185
4186 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
4187 perror("monitor socket bind");
4188 goto error;
4189 }
4190
4191 optlen = sizeof(optval);
4192 optval = 20;
4193 if (setsockopt
4194 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
4195 perror("Failed to set socket priority");
4196 goto error;
4197 }
4198
4199 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
4200 drv, NULL)) {
4201 printf("Could not register monitor read socket\n");
4202 goto error;
4203 }
4204
4205 return 0;
4206 error:
4207 nl80211_remove_monitor_interface(drv);
4208 return -1;
4209 }
4210
4211
4212 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4213
4214 static int wpa_driver_nl80211_hapd_send_eapol(
4215 void *priv, const u8 *addr, const u8 *data,
4216 size_t data_len, int encrypt, const u8 *own_addr)
4217 {
4218 struct i802_bss *bss = priv;
4219 struct wpa_driver_nl80211_data *drv = bss->drv;
4220 struct ieee80211_hdr *hdr;
4221 size_t len;
4222 u8 *pos;
4223 int res;
4224 #if 0 /* FIX */
4225 int qos = sta->flags & WPA_STA_WMM;
4226 #else
4227 int qos = 0;
4228 #endif
4229
4230 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4231 data_len;
4232 hdr = os_zalloc(len);
4233 if (hdr == NULL) {
4234 printf("malloc() failed for i802_send_data(len=%lu)\n",
4235 (unsigned long) len);
4236 return -1;
4237 }
4238
4239 hdr->frame_control =
4240 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4241 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4242 if (encrypt)
4243 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4244 #if 0 /* To be enabled if qos determination is added above */
4245 if (qos) {
4246 hdr->frame_control |=
4247 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4248 }
4249 #endif
4250
4251 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4252 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4253 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4254 pos = (u8 *) (hdr + 1);
4255
4256 #if 0 /* To be enabled if qos determination is added above */
4257 if (qos) {
4258 /* add an empty QoS header if needed */
4259 pos[0] = 0;
4260 pos[1] = 0;
4261 pos += 2;
4262 }
4263 #endif
4264
4265 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4266 pos += sizeof(rfc1042_header);
4267 WPA_PUT_BE16(pos, ETH_P_PAE);
4268 pos += 2;
4269 memcpy(pos, data, data_len);
4270
4271 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
4272 if (res < 0) {
4273 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4274 "failed: %d (%s)",
4275 (unsigned long) len, errno, strerror(errno));
4276 }
4277 os_free(hdr);
4278
4279 return res;
4280 }
4281
4282
4283 static u32 sta_flags_nl80211(int flags)
4284 {
4285 u32 f = 0;
4286
4287 if (flags & WPA_STA_AUTHORIZED)
4288 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4289 if (flags & WPA_STA_WMM)
4290 f |= BIT(NL80211_STA_FLAG_WME);
4291 if (flags & WPA_STA_SHORT_PREAMBLE)
4292 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4293 if (flags & WPA_STA_MFP)
4294 f |= BIT(NL80211_STA_FLAG_MFP);
4295
4296 return f;
4297 }
4298
4299
4300 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4301 int total_flags,
4302 int flags_or, int flags_and)
4303 {
4304 struct i802_bss *bss = priv;
4305 struct wpa_driver_nl80211_data *drv = bss->drv;
4306 struct nl_msg *msg, *flags = NULL;
4307 struct nl80211_sta_flag_update upd;
4308
4309 msg = nlmsg_alloc();
4310 if (!msg)
4311 return -ENOMEM;
4312
4313 flags = nlmsg_alloc();
4314 if (!flags) {
4315 nlmsg_free(msg);
4316 return -ENOMEM;
4317 }
4318
4319 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4320 0, NL80211_CMD_SET_STATION, 0);
4321
4322 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4323 if_nametoindex(bss->ifname));
4324 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4325
4326 /*
4327 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4328 * can be removed eventually.
4329 */
4330 if (total_flags & WPA_STA_AUTHORIZED)
4331 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
4332
4333 if (total_flags & WPA_STA_WMM)
4334 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
4335
4336 if (total_flags & WPA_STA_SHORT_PREAMBLE)
4337 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
4338
4339 if (total_flags & WPA_STA_MFP)
4340 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
4341
4342 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
4343 goto nla_put_failure;
4344
4345 os_memset(&upd, 0, sizeof(upd));
4346 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4347 upd.set = sta_flags_nl80211(flags_or);
4348 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4349
4350 nlmsg_free(flags);
4351
4352 return send_and_recv_msgs(drv, msg, NULL, NULL);
4353 nla_put_failure:
4354 nlmsg_free(flags);
4355 return -ENOBUFS;
4356 }
4357
4358
4359 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4360 struct wpa_driver_associate_params *params)
4361 {
4362 if (params->p2p)
4363 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4364 "group (GO)");
4365 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
4366 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
4367 nl80211_remove_monitor_interface(drv);
4368 return -1;
4369 }
4370
4371 /* TODO: setup monitor interface (and add code somewhere to remove this
4372 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
4373
4374 return 0;
4375 }
4376
4377
4378 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
4379 {
4380 struct nl_msg *msg;
4381 int ret = -1;
4382
4383 msg = nlmsg_alloc();
4384 if (!msg)
4385 return -1;
4386
4387 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4388 NL80211_CMD_LEAVE_IBSS, 0);
4389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4390 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4391 msg = NULL;
4392 if (ret) {
4393 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4394 "(%s)", ret, strerror(-ret));
4395 goto nla_put_failure;
4396 }
4397
4398 ret = 0;
4399 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4400
4401 nla_put_failure:
4402 nlmsg_free(msg);
4403 return ret;
4404 }
4405
4406
4407 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4408 struct wpa_driver_associate_params *params)
4409 {
4410 struct nl_msg *msg;
4411 int ret = -1;
4412 int count = 0;
4413
4414 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4415
4416 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4417 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4418 "IBSS mode");
4419 return -1;
4420 }
4421
4422 retry:
4423 msg = nlmsg_alloc();
4424 if (!msg)
4425 return -1;
4426
4427 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4428 NL80211_CMD_JOIN_IBSS, 0);
4429 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4430
4431 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4432 goto nla_put_failure;
4433
4434 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4435 params->ssid, params->ssid_len);
4436 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4437 params->ssid);
4438 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4439 drv->ssid_len = params->ssid_len;
4440
4441 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4442 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4443
4444 ret = nl80211_set_conn_keys(params, msg);
4445 if (ret)
4446 goto nla_put_failure;
4447
4448 if (params->wpa_ie) {
4449 wpa_hexdump(MSG_DEBUG,
4450 " * Extra IEs for Beacon/Probe Response frames",
4451 params->wpa_ie, params->wpa_ie_len);
4452 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4453 params->wpa_ie);
4454 }
4455
4456 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4457 msg = NULL;
4458 if (ret) {
4459 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4460 ret, strerror(-ret));
4461 count++;
4462 if (ret == -EALREADY && count == 1) {
4463 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4464 "forced leave");
4465 nl80211_leave_ibss(drv);
4466 nlmsg_free(msg);
4467 goto retry;
4468 }
4469
4470 goto nla_put_failure;
4471 }
4472 ret = 0;
4473 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4474
4475 nla_put_failure:
4476 nlmsg_free(msg);
4477 return ret;
4478 }
4479
4480
4481 static int wpa_driver_nl80211_connect(
4482 struct wpa_driver_nl80211_data *drv,
4483 struct wpa_driver_associate_params *params)
4484 {
4485 struct nl_msg *msg;
4486 enum nl80211_auth_type type;
4487 int ret = 0;
4488
4489 msg = nlmsg_alloc();
4490 if (!msg)
4491 return -1;
4492
4493 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4494 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4495 NL80211_CMD_CONNECT, 0);
4496
4497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4498 if (params->bssid) {
4499 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4500 MAC2STR(params->bssid));
4501 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4502 }
4503 if (params->freq) {
4504 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4505 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4506 }
4507 if (params->ssid) {
4508 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4509 params->ssid, params->ssid_len);
4510 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4511 params->ssid);
4512 if (params->ssid_len > sizeof(drv->ssid))
4513 goto nla_put_failure;
4514 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4515 drv->ssid_len = params->ssid_len;
4516 }
4517 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4518 if (params->wpa_ie)
4519 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4520 params->wpa_ie);
4521
4522 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4523 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4524 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4525 type = NL80211_AUTHTYPE_SHARED_KEY;
4526 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4527 type = NL80211_AUTHTYPE_NETWORK_EAP;
4528 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4529 type = NL80211_AUTHTYPE_FT;
4530 else
4531 goto nla_put_failure;
4532
4533 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4534 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4535
4536 if (params->wpa_ie && params->wpa_ie_len) {
4537 enum nl80211_wpa_versions ver;
4538
4539 if (params->wpa_ie[0] == WLAN_EID_RSN)
4540 ver = NL80211_WPA_VERSION_2;
4541 else
4542 ver = NL80211_WPA_VERSION_1;
4543
4544 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4545 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4546 }
4547
4548 if (params->pairwise_suite != CIPHER_NONE) {
4549 int cipher;
4550
4551 switch (params->pairwise_suite) {
4552 case CIPHER_WEP40:
4553 cipher = WLAN_CIPHER_SUITE_WEP40;
4554 break;
4555 case CIPHER_WEP104:
4556 cipher = WLAN_CIPHER_SUITE_WEP104;
4557 break;
4558 case CIPHER_CCMP:
4559 cipher = WLAN_CIPHER_SUITE_CCMP;
4560 break;
4561 case CIPHER_TKIP:
4562 default:
4563 cipher = WLAN_CIPHER_SUITE_TKIP;
4564 break;
4565 }
4566 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4567 }
4568
4569 if (params->group_suite != CIPHER_NONE) {
4570 int cipher;
4571
4572 switch (params->group_suite) {
4573 case CIPHER_WEP40:
4574 cipher = WLAN_CIPHER_SUITE_WEP40;
4575 break;
4576 case CIPHER_WEP104:
4577 cipher = WLAN_CIPHER_SUITE_WEP104;
4578 break;
4579 case CIPHER_CCMP:
4580 cipher = WLAN_CIPHER_SUITE_CCMP;
4581 break;
4582 case CIPHER_TKIP:
4583 default:
4584 cipher = WLAN_CIPHER_SUITE_TKIP;
4585 break;
4586 }
4587 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4588 }
4589
4590 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4591 params->key_mgmt_suite == KEY_MGMT_PSK) {
4592 int mgmt = WLAN_AKM_SUITE_PSK;
4593
4594 switch (params->key_mgmt_suite) {
4595 case KEY_MGMT_802_1X:
4596 mgmt = WLAN_AKM_SUITE_8021X;
4597 break;
4598 case KEY_MGMT_PSK:
4599 default:
4600 mgmt = WLAN_AKM_SUITE_PSK;
4601 break;
4602 }
4603 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4604 }
4605
4606 ret = nl80211_set_conn_keys(params, msg);
4607 if (ret)
4608 goto nla_put_failure;
4609
4610 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4611 msg = NULL;
4612 if (ret) {
4613 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4614 "(%s)", ret, strerror(-ret));
4615 goto nla_put_failure;
4616 }
4617 ret = 0;
4618 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4619
4620 nla_put_failure:
4621 nlmsg_free(msg);
4622 return ret;
4623
4624 }
4625
4626
4627 static int wpa_driver_nl80211_associate(
4628 void *priv, struct wpa_driver_associate_params *params)
4629 {
4630 struct i802_bss *bss = priv;
4631 struct wpa_driver_nl80211_data *drv = bss->drv;
4632 int ret = -1;
4633 struct nl_msg *msg;
4634
4635 if (params->mode == IEEE80211_MODE_AP)
4636 return wpa_driver_nl80211_ap(drv, params);
4637
4638 if (params->mode == IEEE80211_MODE_IBSS)
4639 return wpa_driver_nl80211_ibss(drv, params);
4640
4641 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4642 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4643 return -1;
4644 return wpa_driver_nl80211_connect(drv, params);
4645 }
4646
4647 drv->associated = 0;
4648
4649 msg = nlmsg_alloc();
4650 if (!msg)
4651 return -1;
4652
4653 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4654 drv->ifindex);
4655 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4656 NL80211_CMD_ASSOCIATE, 0);
4657
4658 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4659 if (params->bssid) {
4660 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4661 MAC2STR(params->bssid));
4662 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4663 }
4664 if (params->freq) {
4665 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4666 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4667 drv->assoc_freq = params->freq;
4668 } else
4669 drv->assoc_freq = 0;
4670 if (params->ssid) {
4671 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4672 params->ssid, params->ssid_len);
4673 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4674 params->ssid);
4675 if (params->ssid_len > sizeof(drv->ssid))
4676 goto nla_put_failure;
4677 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4678 drv->ssid_len = params->ssid_len;
4679 }
4680 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4681 if (params->wpa_ie)
4682 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4683 params->wpa_ie);
4684
4685 if (params->pairwise_suite != CIPHER_NONE) {
4686 int cipher;
4687
4688 switch (params->pairwise_suite) {
4689 case CIPHER_WEP40:
4690 cipher = WLAN_CIPHER_SUITE_WEP40;
4691 break;
4692 case CIPHER_WEP104:
4693 cipher = WLAN_CIPHER_SUITE_WEP104;
4694 break;
4695 case CIPHER_CCMP:
4696 cipher = WLAN_CIPHER_SUITE_CCMP;
4697 break;
4698 case CIPHER_TKIP:
4699 default:
4700 cipher = WLAN_CIPHER_SUITE_TKIP;
4701 break;
4702 }
4703 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
4704 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4705 }
4706
4707 if (params->group_suite != CIPHER_NONE) {
4708 int cipher;
4709
4710 switch (params->group_suite) {
4711 case CIPHER_WEP40:
4712 cipher = WLAN_CIPHER_SUITE_WEP40;
4713 break;
4714 case CIPHER_WEP104:
4715 cipher = WLAN_CIPHER_SUITE_WEP104;
4716 break;
4717 case CIPHER_CCMP:
4718 cipher = WLAN_CIPHER_SUITE_CCMP;
4719 break;
4720 case CIPHER_TKIP:
4721 default:
4722 cipher = WLAN_CIPHER_SUITE_TKIP;
4723 break;
4724 }
4725 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
4726 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4727 }
4728
4729 #ifdef CONFIG_IEEE80211W
4730 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4731 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4732 #endif /* CONFIG_IEEE80211W */
4733
4734 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4735
4736 if (params->prev_bssid) {
4737 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4738 MAC2STR(params->prev_bssid));
4739 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4740 params->prev_bssid);
4741 }
4742
4743 if (params->p2p)
4744 wpa_printf(MSG_DEBUG, " * P2P group");
4745
4746 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4747 msg = NULL;
4748 if (ret) {
4749 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4750 "(%s)", ret, strerror(-ret));
4751 nl80211_dump_scan(drv);
4752 goto nla_put_failure;
4753 }
4754 ret = 0;
4755 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4756 "successfully");
4757
4758 nla_put_failure:
4759 nlmsg_free(msg);
4760 return ret;
4761 }
4762
4763
4764 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4765 int ifindex, int mode)
4766 {
4767 struct nl_msg *msg;
4768 int ret = -ENOBUFS;
4769
4770 msg = nlmsg_alloc();
4771 if (!msg)
4772 return -ENOMEM;
4773
4774 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4775 0, NL80211_CMD_SET_INTERFACE, 0);
4776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4777 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4778
4779 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4780 if (!ret)
4781 return 0;
4782 nla_put_failure:
4783 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4784 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4785 return ret;
4786 }
4787
4788
4789 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4790 {
4791 struct i802_bss *bss = priv;
4792 struct wpa_driver_nl80211_data *drv = bss->drv;
4793 int ret = -1;
4794 int nlmode;
4795 int i;
4796
4797 switch (mode) {
4798 case 0:
4799 nlmode = NL80211_IFTYPE_STATION;
4800 break;
4801 case 1:
4802 nlmode = NL80211_IFTYPE_ADHOC;
4803 break;
4804 case 2:
4805 nlmode = NL80211_IFTYPE_AP;
4806 break;
4807 default:
4808 return -1;
4809 }
4810
4811 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4812 drv->nlmode = nlmode;
4813 ret = 0;
4814 goto done;
4815 }
4816
4817 if (nlmode == drv->nlmode) {
4818 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4819 "requested mode - ignore error");
4820 ret = 0;
4821 goto done; /* Already in the requested mode */
4822 }
4823
4824 /* mac80211 doesn't allow mode changes while the device is up, so
4825 * take the device down, try to set the mode again, and bring the
4826 * device back up.
4827 */
4828 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4829 "interface down");
4830 for (i = 0; i < 10; i++) {
4831 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4832 0) {
4833 /* Try to set the mode again while the interface is
4834 * down */
4835 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4836 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4837 1))
4838 ret = -1;
4839 if (!ret)
4840 break;
4841 } else
4842 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4843 "interface down");
4844 os_sleep(0, 100000);
4845 }
4846
4847 if (!ret) {
4848 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4849 "interface is down");
4850 drv->nlmode = nlmode;
4851 }
4852
4853 done:
4854 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4855 /* Setup additional AP mode functionality if needed */
4856 if (drv->monitor_ifidx < 0 &&
4857 nl80211_create_monitor_interface(drv))
4858 return -1;
4859 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4860 /* Remove additional AP mode functionality */
4861 nl80211_remove_monitor_interface(drv);
4862 bss->beacon_set = 0;
4863 }
4864
4865 if (ret)
4866 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4867 "from %d failed", nlmode, drv->nlmode);
4868
4869 return ret;
4870 }
4871
4872
4873 static int wpa_driver_nl80211_get_capa(void *priv,
4874 struct wpa_driver_capa *capa)
4875 {
4876 struct i802_bss *bss = priv;
4877 struct wpa_driver_nl80211_data *drv = bss->drv;
4878 if (!drv->has_capability)
4879 return -1;
4880 os_memcpy(capa, &drv->capa, sizeof(*capa));
4881 return 0;
4882 }
4883
4884
4885 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4886 {
4887 struct i802_bss *bss = priv;
4888 struct wpa_driver_nl80211_data *drv = bss->drv;
4889
4890 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4891 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4892 drv->operstate = state;
4893 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4894 state ? IF_OPER_UP : IF_OPER_DORMANT);
4895 }
4896
4897
4898 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4899 {
4900 struct i802_bss *bss = priv;
4901 struct wpa_driver_nl80211_data *drv = bss->drv;
4902 struct nl_msg *msg;
4903 struct nl80211_sta_flag_update upd;
4904
4905 msg = nlmsg_alloc();
4906 if (!msg)
4907 return -ENOMEM;
4908
4909 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4910 0, NL80211_CMD_SET_STATION, 0);
4911
4912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4913 if_nametoindex(bss->ifname));
4914 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4915
4916 os_memset(&upd, 0, sizeof(upd));
4917 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4918 if (authorized)
4919 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4920 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4921
4922 return send_and_recv_msgs(drv, msg, NULL, NULL);
4923 nla_put_failure:
4924 return -ENOBUFS;
4925 }
4926
4927
4928 #ifdef HOSTAPD
4929
4930 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4931 {
4932 int i;
4933 int *old;
4934
4935 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4936 ifidx);
4937 for (i = 0; i < drv->num_if_indices; i++) {
4938 if (drv->if_indices[i] == 0) {
4939 drv->if_indices[i] = ifidx;
4940 return;
4941 }
4942 }
4943
4944 if (drv->if_indices != drv->default_if_indices)
4945 old = drv->if_indices;
4946 else
4947 old = NULL;
4948
4949 drv->if_indices = os_realloc(old,
4950 sizeof(int) * (drv->num_if_indices + 1));
4951 if (!drv->if_indices) {
4952 if (!old)
4953 drv->if_indices = drv->default_if_indices;
4954 else
4955 drv->if_indices = old;
4956 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4957 "interfaces");
4958 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4959 return;
4960 } else if (!old)
4961 os_memcpy(drv->if_indices, drv->default_if_indices,
4962 sizeof(drv->default_if_indices));
4963 drv->if_indices[drv->num_if_indices] = ifidx;
4964 drv->num_if_indices++;
4965 }
4966
4967
4968 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4969 {
4970 int i;
4971
4972 for (i = 0; i < drv->num_if_indices; i++) {
4973 if (drv->if_indices[i] == ifidx) {
4974 drv->if_indices[i] = 0;
4975 break;
4976 }
4977 }
4978 }
4979
4980
4981 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4982 {
4983 int i;
4984
4985 for (i = 0; i < drv->num_if_indices; i++)
4986 if (drv->if_indices[i] == ifidx)
4987 return 1;
4988
4989 return 0;
4990 }
4991
4992
4993 static inline int min_int(int a, int b)
4994 {
4995 if (a < b)
4996 return a;
4997 return b;
4998 }
4999
5000
5001 static int get_key_handler(struct nl_msg *msg, void *arg)
5002 {
5003 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5004 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5005
5006 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5007 genlmsg_attrlen(gnlh, 0), NULL);
5008
5009 /*
5010 * TODO: validate the key index and mac address!
5011 * Otherwise, there's a race condition as soon as
5012 * the kernel starts sending key notifications.
5013 */
5014
5015 if (tb[NL80211_ATTR_KEY_SEQ])
5016 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5017 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5018 return NL_SKIP;
5019 }
5020
5021
5022 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5023 int idx, u8 *seq)
5024 {
5025 struct i802_bss *bss = priv;
5026 struct wpa_driver_nl80211_data *drv = bss->drv;
5027 struct nl_msg *msg;
5028
5029 msg = nlmsg_alloc();
5030 if (!msg)
5031 return -ENOMEM;
5032
5033 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5034 0, NL80211_CMD_GET_KEY, 0);
5035
5036 if (addr)
5037 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5038 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5039 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5040
5041 memset(seq, 0, 6);
5042
5043 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5044 nla_put_failure:
5045 return -ENOBUFS;
5046 }
5047
5048
5049 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
5050 int mode)
5051 {
5052 struct i802_bss *bss = priv;
5053 struct wpa_driver_nl80211_data *drv = bss->drv;
5054 struct nl_msg *msg;
5055 u8 rates[NL80211_MAX_SUPP_RATES];
5056 u8 rates_len = 0;
5057 int i;
5058
5059 msg = nlmsg_alloc();
5060 if (!msg)
5061 return -ENOMEM;
5062
5063 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5064 NL80211_CMD_SET_BSS, 0);
5065
5066 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
5067 rates[rates_len++] = basic_rates[i] / 5;
5068
5069 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5070
5071 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5072
5073 return send_and_recv_msgs(drv, msg, NULL, NULL);
5074 nla_put_failure:
5075 return -ENOBUFS;
5076 }
5077
5078 #endif /* HOSTAPD */
5079
5080
5081 /* Set kernel driver on given frequency (MHz) */
5082 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5083 {
5084 struct i802_bss *bss = priv;
5085 struct wpa_driver_nl80211_data *drv = bss->drv;
5086 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
5087 freq->sec_channel_offset);
5088 }
5089
5090
5091 #ifdef HOSTAPD
5092
5093 static int i802_set_rts(void *priv, int rts)
5094 {
5095 struct i802_bss *bss = priv;
5096 struct wpa_driver_nl80211_data *drv = bss->drv;
5097 struct nl_msg *msg;
5098 int ret = -ENOBUFS;
5099 u32 val;
5100
5101 msg = nlmsg_alloc();
5102 if (!msg)
5103 return -ENOMEM;
5104
5105 if (rts >= 2347)
5106 val = (u32) -1;
5107 else
5108 val = rts;
5109
5110 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5111 0, NL80211_CMD_SET_WIPHY, 0);
5112 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5113 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5114
5115 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5116 if (!ret)
5117 return 0;
5118 nla_put_failure:
5119 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5120 "%d (%s)", rts, ret, strerror(-ret));
5121 return ret;
5122 }
5123
5124
5125 static int i802_set_frag(void *priv, int frag)
5126 {
5127 struct i802_bss *bss = priv;
5128 struct wpa_driver_nl80211_data *drv = bss->drv;
5129 struct nl_msg *msg;
5130 int ret = -ENOBUFS;
5131 u32 val;
5132
5133 msg = nlmsg_alloc();
5134 if (!msg)
5135 return -ENOMEM;
5136
5137 if (frag >= 2346)
5138 val = (u32) -1;
5139 else
5140 val = frag;
5141
5142 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5143 0, NL80211_CMD_SET_WIPHY, 0);
5144 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5145 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5146
5147 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5148 if (!ret)
5149 return 0;
5150 nla_put_failure:
5151 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5152 "%d: %d (%s)", frag, ret, strerror(-ret));
5153 return ret;
5154 }
5155
5156
5157 static int i802_flush(void *priv)
5158 {
5159 struct i802_bss *bss = priv;
5160 struct wpa_driver_nl80211_data *drv = bss->drv;
5161 struct nl_msg *msg;
5162
5163 msg = nlmsg_alloc();
5164 if (!msg)
5165 return -1;
5166
5167 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5168 0, NL80211_CMD_DEL_STATION, 0);
5169
5170 /*
5171 * XXX: FIX! this needs to flush all VLANs too
5172 */
5173 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5174 if_nametoindex(bss->ifname));
5175
5176 return send_and_recv_msgs(drv, msg, NULL, NULL);
5177 nla_put_failure:
5178 return -ENOBUFS;
5179 }
5180
5181
5182 static int get_sta_handler(struct nl_msg *msg, void *arg)
5183 {
5184 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5185 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5186 struct hostap_sta_driver_data *data = arg;
5187 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5188 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5189 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5190 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5191 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5192 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5193 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5194 };
5195
5196 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5197 genlmsg_attrlen(gnlh, 0), NULL);
5198
5199 /*
5200 * TODO: validate the interface and mac address!
5201 * Otherwise, there's a race condition as soon as
5202 * the kernel starts sending station notifications.
5203 */
5204
5205 if (!tb[NL80211_ATTR_STA_INFO]) {
5206 wpa_printf(MSG_DEBUG, "sta stats missing!");
5207 return NL_SKIP;
5208 }
5209 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5210 tb[NL80211_ATTR_STA_INFO],
5211 stats_policy)) {
5212 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5213 return NL_SKIP;
5214 }
5215
5216 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5217 data->inactive_msec =
5218 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5219 if (stats[NL80211_STA_INFO_RX_BYTES])
5220 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5221 if (stats[NL80211_STA_INFO_TX_BYTES])
5222 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5223 if (stats[NL80211_STA_INFO_RX_PACKETS])
5224 data->rx_packets =
5225 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5226 if (stats[NL80211_STA_INFO_TX_PACKETS])
5227 data->tx_packets =
5228 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5229
5230 return NL_SKIP;
5231 }
5232
5233 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
5234 const u8 *addr)
5235 {
5236 struct i802_bss *bss = priv;
5237 struct wpa_driver_nl80211_data *drv = bss->drv;
5238 struct nl_msg *msg;
5239
5240 os_memset(data, 0, sizeof(*data));
5241 msg = nlmsg_alloc();
5242 if (!msg)
5243 return -ENOMEM;
5244
5245 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5246 0, NL80211_CMD_GET_STATION, 0);
5247
5248 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5249 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5250
5251 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
5252 nla_put_failure:
5253 return -ENOBUFS;
5254 }
5255
5256
5257 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5258 int cw_min, int cw_max, int burst_time)
5259 {
5260 struct i802_bss *bss = priv;
5261 struct wpa_driver_nl80211_data *drv = bss->drv;
5262 struct nl_msg *msg;
5263 struct nlattr *txq, *params;
5264
5265 msg = nlmsg_alloc();
5266 if (!msg)
5267 return -1;
5268
5269 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5270 0, NL80211_CMD_SET_WIPHY, 0);
5271
5272 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5273
5274 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5275 if (!txq)
5276 goto nla_put_failure;
5277
5278 /* We are only sending parameters for a single TXQ at a time */
5279 params = nla_nest_start(msg, 1);
5280 if (!params)
5281 goto nla_put_failure;
5282
5283 switch (queue) {
5284 case 0:
5285 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
5286 break;
5287 case 1:
5288 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
5289 break;
5290 case 2:
5291 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
5292 break;
5293 case 3:
5294 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
5295 break;
5296 }
5297 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5298 * 32 usec, so need to convert the value here. */
5299 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
5300 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
5301 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
5302 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
5303
5304 nla_nest_end(msg, params);
5305
5306 nla_nest_end(msg, txq);
5307
5308 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5309 return 0;
5310 nla_put_failure:
5311 return -1;
5312 }
5313
5314
5315 static int i802_set_bss(void *priv, int cts, int preamble, int slot,
5316 int ht_opmode)
5317 {
5318 struct i802_bss *bss = priv;
5319 struct wpa_driver_nl80211_data *drv = bss->drv;
5320 struct nl_msg *msg;
5321
5322 msg = nlmsg_alloc();
5323 if (!msg)
5324 return -ENOMEM;
5325
5326 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5327 NL80211_CMD_SET_BSS, 0);
5328
5329 if (cts >= 0)
5330 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5331 if (preamble >= 0)
5332 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5333 if (slot >= 0)
5334 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5335 if (ht_opmode >= 0)
5336 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5337 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5338
5339 return send_and_recv_msgs(drv, msg, NULL, NULL);
5340 nla_put_failure:
5341 return -ENOBUFS;
5342 }
5343
5344
5345 static int i802_set_cts_protect(void *priv, int value)
5346 {
5347 return i802_set_bss(priv, value, -1, -1, -1);
5348 }
5349
5350
5351 static int i802_set_preamble(void *priv, int value)
5352 {
5353 return i802_set_bss(priv, -1, value, -1, -1);
5354 }
5355
5356
5357 static int i802_set_short_slot_time(void *priv, int value)
5358 {
5359 return i802_set_bss(priv, -1, -1, value, -1);
5360 }
5361
5362
5363 static int i802_set_sta_vlan(void *priv, const u8 *addr,
5364 const char *ifname, int vlan_id)
5365 {
5366 struct i802_bss *bss = priv;
5367 struct wpa_driver_nl80211_data *drv = bss->drv;
5368 struct nl_msg *msg;
5369 int ret = -ENOBUFS;
5370
5371 msg = nlmsg_alloc();
5372 if (!msg)
5373 return -ENOMEM;
5374
5375 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5376 0, NL80211_CMD_SET_STATION, 0);
5377
5378 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5379 if_nametoindex(bss->ifname));
5380 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5381 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
5382 if_nametoindex(ifname));
5383
5384 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5385 if (ret < 0) {
5386 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5387 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5388 MAC2STR(addr), ifname, vlan_id, ret,
5389 strerror(-ret));
5390 }
5391 nla_put_failure:
5392 return ret;
5393 }
5394
5395
5396 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5397 const char *bridge_ifname)
5398 {
5399 struct i802_bss *bss = priv;
5400 struct wpa_driver_nl80211_data *drv = bss->drv;
5401 char name[IFNAMSIZ + 1];
5402
5403 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5404 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5405 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5406 if (val) {
5407 if (!if_nametoindex(name)) {
5408 if (nl80211_create_iface(drv, name,
5409 NL80211_IFTYPE_AP_VLAN,
5410 NULL, 1) < 0)
5411 return -1;
5412 if (bridge_ifname &&
5413 linux_br_add_if(drv->ioctl_sock, bridge_ifname,
5414 name) < 0)
5415 return -1;
5416 }
5417 linux_set_iface_flags(drv->ioctl_sock, name, 1);
5418 return i802_set_sta_vlan(priv, addr, name, 0);
5419 } else {
5420 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5421 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
5422 name);
5423 }
5424 }
5425
5426
5427 static int i802_set_ht_params(void *priv, const u8 *ht_capab,
5428 size_t ht_capab_len, const u8 *ht_oper,
5429 size_t ht_oper_len)
5430 {
5431 if (ht_oper_len >= 6) {
5432 /* ht opmode uses 16bit in octet 5 & 6 */
5433 u16 ht_opmode = le_to_host16(((u16 *) ht_oper)[2]);
5434 return i802_set_bss(priv, -1, -1, -1, ht_opmode);
5435 } else
5436 return -1;
5437 }
5438
5439
5440 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5441 {
5442 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5443 struct sockaddr_ll lladdr;
5444 unsigned char buf[3000];
5445 int len;
5446 socklen_t fromlen = sizeof(lladdr);
5447
5448 len = recvfrom(sock, buf, sizeof(buf), 0,
5449 (struct sockaddr *)&lladdr, &fromlen);
5450 if (len < 0) {
5451 perror("recv");
5452 return;
5453 }
5454
5455 if (have_ifidx(drv, lladdr.sll_ifindex))
5456 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5457 }
5458
5459
5460 static int i802_get_inact_sec(void *priv, const u8 *addr)
5461 {
5462 struct hostap_sta_driver_data data;
5463 int ret;
5464
5465 data.inactive_msec = (unsigned long) -1;
5466 ret = i802_read_sta_data(priv, &data, addr);
5467 if (ret || data.inactive_msec == (unsigned long) -1)
5468 return -1;
5469 return data.inactive_msec / 1000;
5470 }
5471
5472
5473 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5474 {
5475 #if 0
5476 /* TODO */
5477 #endif
5478 return 0;
5479 }
5480
5481 #endif /* HOSTAPD */
5482
5483 #if defined(HOSTAPD) || defined(CONFIG_AP)
5484
5485 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5486 int reason)
5487 {
5488 struct i802_bss *bss = priv;
5489 struct ieee80211_mgmt mgmt;
5490
5491 memset(&mgmt, 0, sizeof(mgmt));
5492 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5493 WLAN_FC_STYPE_DEAUTH);
5494 memcpy(mgmt.da, addr, ETH_ALEN);
5495 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5496 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5497 mgmt.u.deauth.reason_code = host_to_le16(reason);
5498 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5499 IEEE80211_HDRLEN +
5500 sizeof(mgmt.u.deauth));
5501 }
5502
5503
5504 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5505 int reason)
5506 {
5507 struct i802_bss *bss = priv;
5508 struct ieee80211_mgmt mgmt;
5509
5510 memset(&mgmt, 0, sizeof(mgmt));
5511 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5512 WLAN_FC_STYPE_DISASSOC);
5513 memcpy(mgmt.da, addr, ETH_ALEN);
5514 memcpy(mgmt.sa, own_addr, ETH_ALEN);
5515 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5516 mgmt.u.disassoc.reason_code = host_to_le16(reason);
5517 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5518 IEEE80211_HDRLEN +
5519 sizeof(mgmt.u.disassoc));
5520 }
5521
5522 #endif /* HOSTAPD || CONFIG_AP */
5523
5524 #ifdef HOSTAPD
5525
5526 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5527 struct i802_bss *bss,
5528 const char *brname, const char *ifname)
5529 {
5530 int ifindex;
5531 char in_br[IFNAMSIZ];
5532
5533 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5534 ifindex = if_nametoindex(brname);
5535 if (ifindex == 0) {
5536 /*
5537 * Bridge was configured, but the bridge device does
5538 * not exist. Try to add it now.
5539 */
5540 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5541 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5542 "bridge interface %s: %s",
5543 brname, strerror(errno));
5544 return -1;
5545 }
5546 bss->added_bridge = 1;
5547 add_ifidx(drv, if_nametoindex(brname));
5548 }
5549
5550 if (linux_br_get(in_br, ifname) == 0) {
5551 if (os_strcmp(in_br, brname) == 0)
5552 return 0; /* already in the bridge */
5553
5554 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5555 "bridge %s", ifname, in_br);
5556 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5557 wpa_printf(MSG_ERROR, "nl80211: Failed to "
5558 "remove interface %s from bridge "
5559 "%s: %s",
5560 ifname, brname, strerror(errno));
5561 return -1;
5562 }
5563 }
5564
5565 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5566 ifname, brname);
5567 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5568 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5569 "into bridge %s: %s",
5570 ifname, brname, strerror(errno));
5571 return -1;
5572 }
5573 bss->added_if_into_bridge = 1;
5574
5575 return 0;
5576 }
5577
5578
5579 static void *i802_init(struct hostapd_data *hapd,
5580 struct wpa_init_params *params)
5581 {
5582 struct wpa_driver_nl80211_data *drv;
5583 struct i802_bss *bss;
5584 size_t i;
5585 char brname[IFNAMSIZ];
5586 int ifindex, br_ifindex;
5587 int br_added = 0;
5588
5589 bss = wpa_driver_nl80211_init(hapd, params->ifname, NULL);
5590 if (bss == NULL)
5591 return NULL;
5592
5593 drv = bss->drv;
5594 drv->nlmode = NL80211_IFTYPE_AP;
5595 if (linux_br_get(brname, params->ifname) == 0) {
5596 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5597 params->ifname, brname);
5598 br_ifindex = if_nametoindex(brname);
5599 } else {
5600 brname[0] = '\0';
5601 br_ifindex = 0;
5602 }
5603
5604 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5605 drv->if_indices = drv->default_if_indices;
5606 for (i = 0; i < params->num_bridge; i++) {
5607 if (params->bridge[i]) {
5608 ifindex = if_nametoindex(params->bridge[i]);
5609 if (ifindex)
5610 add_ifidx(drv, ifindex);
5611 if (ifindex == br_ifindex)
5612 br_added = 1;
5613 }
5614 }
5615 if (!br_added && br_ifindex &&
5616 (params->num_bridge == 0 || !params->bridge[0]))
5617 add_ifidx(drv, br_ifindex);
5618
5619 /* start listening for EAPOL on the default AP interface */
5620 add_ifidx(drv, drv->ifindex);
5621
5622 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5623 goto failed;
5624
5625 if (params->bssid) {
5626 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5627 params->bssid))
5628 goto failed;
5629 }
5630
5631 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5632 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5633 "into AP mode", bss->ifname);
5634 goto failed;
5635 }
5636
5637 if (params->num_bridge && params->bridge[0] &&
5638 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
5639 goto failed;
5640
5641 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5642 goto failed;
5643
5644 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5645 if (drv->eapol_sock < 0) {
5646 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5647 goto failed;
5648 }
5649
5650 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5651 {
5652 printf("Could not register read socket for eapol\n");
5653 goto failed;
5654 }
5655
5656 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5657 goto failed;
5658
5659 return bss;
5660
5661 failed:
5662 nl80211_remove_monitor_interface(drv);
5663 rfkill_deinit(drv->rfkill);
5664 netlink_deinit(drv->netlink);
5665 if (drv->ioctl_sock >= 0)
5666 close(drv->ioctl_sock);
5667
5668 genl_family_put(drv->nl80211);
5669 nl_cache_free(drv->nl_cache);
5670 nl80211_handle_destroy(drv->nl_handle);
5671 nl_cb_put(drv->nl_cb);
5672 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
5673
5674 os_free(drv);
5675 return NULL;
5676 }
5677
5678
5679 static void i802_deinit(void *priv)
5680 {
5681 wpa_driver_nl80211_deinit(priv);
5682 }
5683
5684 #endif /* HOSTAPD */
5685
5686
5687 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5688 enum wpa_driver_if_type type)
5689 {
5690 switch (type) {
5691 case WPA_IF_STATION:
5692 return NL80211_IFTYPE_STATION;
5693 case WPA_IF_P2P_CLIENT:
5694 case WPA_IF_P2P_GROUP:
5695 return NL80211_IFTYPE_P2P_CLIENT;
5696 case WPA_IF_AP_VLAN:
5697 return NL80211_IFTYPE_AP_VLAN;
5698 case WPA_IF_AP_BSS:
5699 return NL80211_IFTYPE_AP;
5700 case WPA_IF_P2P_GO:
5701 return NL80211_IFTYPE_P2P_GO;
5702 }
5703 return -1;
5704 }
5705
5706
5707 #ifdef CONFIG_P2P
5708
5709 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5710 {
5711 struct wpa_driver_nl80211_data *drv;
5712 dl_list_for_each(drv, &global->interfaces,
5713 struct wpa_driver_nl80211_data, list) {
5714 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0)
5715 return 1;
5716 }
5717 return 0;
5718 }
5719
5720
5721 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
5722 u8 *new_addr)
5723 {
5724 unsigned int idx;
5725
5726 if (!drv->global)
5727 return -1;
5728
5729 os_memcpy(new_addr, drv->addr, ETH_ALEN);
5730 for (idx = 0; idx < 64; idx++) {
5731 new_addr[0] = drv->addr[0] | 0x02;
5732 new_addr[0] ^= idx << 2;
5733 if (!nl80211_addr_in_use(drv->global, new_addr))
5734 break;
5735 }
5736 if (idx == 64)
5737 return -1;
5738
5739 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
5740 MACSTR, MAC2STR(new_addr));
5741
5742 return 0;
5743 }
5744
5745 #endif /* CONFIG_P2P */
5746
5747
5748 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5749 const char *ifname, const u8 *addr,
5750 void *bss_ctx, void **drv_priv,
5751 char *force_ifname, u8 *if_addr,
5752 const char *bridge)
5753 {
5754 struct i802_bss *bss = priv;
5755 struct wpa_driver_nl80211_data *drv = bss->drv;
5756 int ifidx;
5757 #ifdef HOSTAPD
5758 struct i802_bss *new_bss = NULL;
5759
5760 if (type == WPA_IF_AP_BSS) {
5761 new_bss = os_zalloc(sizeof(*new_bss));
5762 if (new_bss == NULL)
5763 return -1;
5764 }
5765 #endif /* HOSTAPD */
5766
5767 if (addr)
5768 os_memcpy(if_addr, addr, ETH_ALEN);
5769 ifidx = nl80211_create_iface(drv, ifname,
5770 wpa_driver_nl80211_if_type(type), addr,
5771 0);
5772 if (ifidx < 0) {
5773 #ifdef HOSTAPD
5774 os_free(new_bss);
5775 #endif /* HOSTAPD */
5776 return -1;
5777 }
5778
5779 if (!addr &&
5780 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0) {
5781 nl80211_remove_iface(drv, ifidx);
5782 return -1;
5783 }
5784
5785 #ifdef CONFIG_P2P
5786 if (!addr &&
5787 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5788 type == WPA_IF_P2P_GO)) {
5789 /* Enforce unique P2P Interface Address */
5790 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
5791
5792 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr)
5793 < 0 ||
5794 linux_get_ifhwaddr(drv->ioctl_sock, ifname, new_addr) < 0)
5795 {
5796 nl80211_remove_iface(drv, ifidx);
5797 return -1;
5798 }
5799 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
5800 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5801 "for P2P group interface");
5802 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
5803 nl80211_remove_iface(drv, ifidx);
5804 return -1;
5805 }
5806 if (linux_set_ifhwaddr(drv->ioctl_sock, ifname,
5807 new_addr) < 0) {
5808 nl80211_remove_iface(drv, ifidx);
5809 return -1;
5810 }
5811 os_memcpy(if_addr, new_addr, ETH_ALEN);
5812 }
5813 }
5814 #endif /* CONFIG_P2P */
5815
5816 #ifdef HOSTAPD
5817 if (bridge &&
5818 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5819 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5820 "interface %s to a bridge %s", ifname, bridge);
5821 nl80211_remove_iface(drv, ifidx);
5822 os_free(new_bss);
5823 return -1;
5824 }
5825
5826 if (type == WPA_IF_AP_BSS) {
5827 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5828 nl80211_remove_iface(drv, ifidx);
5829 os_free(new_bss);
5830 return -1;
5831 }
5832 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5833 new_bss->ifindex = ifidx;
5834 new_bss->drv = drv;
5835 new_bss->next = drv->first_bss.next;
5836 drv->first_bss.next = new_bss;
5837 if (drv_priv)
5838 *drv_priv = new_bss;
5839 }
5840 #endif /* HOSTAPD */
5841
5842 return 0;
5843 }
5844
5845
5846 static int wpa_driver_nl80211_if_remove(void *priv,
5847 enum wpa_driver_if_type type,
5848 const char *ifname)
5849 {
5850 struct i802_bss *bss = priv;
5851 struct wpa_driver_nl80211_data *drv = bss->drv;
5852 int ifindex = if_nametoindex(ifname);
5853
5854 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5855 __func__, type, ifname, ifindex);
5856 if (ifindex <= 0)
5857 return -1;
5858
5859 #ifdef HOSTAPD
5860 if (bss->added_if_into_bridge) {
5861 if (linux_br_del_if(drv->ioctl_sock, bss->brname, bss->ifname)
5862 < 0)
5863 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5864 "interface %s from bridge %s: %s",
5865 bss->ifname, bss->brname, strerror(errno));
5866 }
5867 if (bss->added_bridge) {
5868 if (linux_br_del(drv->ioctl_sock, bss->brname) < 0)
5869 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5870 "bridge %s: %s",
5871 bss->brname, strerror(errno));
5872 }
5873 #endif /* HOSTAPD */
5874
5875 nl80211_remove_iface(drv, ifindex);
5876
5877 #ifdef HOSTAPD
5878 if (type != WPA_IF_AP_BSS)
5879 return 0;
5880
5881 if (bss != &drv->first_bss) {
5882 struct i802_bss *tbss;
5883
5884 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
5885 if (tbss->next == bss) {
5886 tbss->next = bss->next;
5887 os_free(bss);
5888 bss = NULL;
5889 break;
5890 }
5891 }
5892 if (bss)
5893 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
5894 "BSS %p in the list", __func__, bss);
5895 }
5896 #endif /* HOSTAPD */
5897
5898 return 0;
5899 }
5900
5901
5902 static int cookie_handler(struct nl_msg *msg, void *arg)
5903 {
5904 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5905 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5906 u64 *cookie = arg;
5907 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5908 genlmsg_attrlen(gnlh, 0), NULL);
5909 if (tb[NL80211_ATTR_COOKIE])
5910 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5911 return NL_SKIP;
5912 }
5913
5914
5915 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5916 unsigned int freq, unsigned int wait,
5917 const u8 *buf, size_t buf_len,
5918 u64 *cookie_out)
5919 {
5920 struct nl_msg *msg;
5921 u64 cookie;
5922 int ret = -1;
5923
5924 msg = nlmsg_alloc();
5925 if (!msg)
5926 return -1;
5927
5928 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5929 NL80211_CMD_FRAME, 0);
5930
5931 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5932 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5933 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
5934 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
5935 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5936
5937 cookie = 0;
5938 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5939 msg = NULL;
5940 if (ret) {
5941 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5942 "(%s)", ret, strerror(-ret));
5943 goto nla_put_failure;
5944 }
5945 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5946 "cookie 0x%llx", (long long unsigned int) cookie);
5947
5948 if (cookie_out)
5949 *cookie_out = cookie;
5950
5951 nla_put_failure:
5952 nlmsg_free(msg);
5953 return ret;
5954 }
5955
5956
5957 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5958 unsigned int wait_time,
5959 const u8 *dst, const u8 *src,
5960 const u8 *bssid,
5961 const u8 *data, size_t data_len)
5962 {
5963 struct i802_bss *bss = priv;
5964 struct wpa_driver_nl80211_data *drv = bss->drv;
5965 int ret = -1;
5966 u8 *buf;
5967 struct ieee80211_hdr *hdr;
5968
5969 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
5970 "wait=%d ms)", drv->ifindex, wait_time);
5971
5972 buf = os_zalloc(24 + data_len);
5973 if (buf == NULL)
5974 return ret;
5975 os_memcpy(buf + 24, data, data_len);
5976 hdr = (struct ieee80211_hdr *) buf;
5977 hdr->frame_control =
5978 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5979 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5980 os_memcpy(hdr->addr2, src, ETH_ALEN);
5981 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5982
5983 if (drv->nlmode == NL80211_IFTYPE_AP)
5984 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5985 else
5986 ret = nl80211_send_frame_cmd(drv, freq, wait_time, buf,
5987 24 + data_len,
5988 &drv->send_action_cookie);
5989
5990 os_free(buf);
5991 return ret;
5992 }
5993
5994
5995 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
5996 {
5997 struct i802_bss *bss = priv;
5998 struct wpa_driver_nl80211_data *drv = bss->drv;
5999 struct nl_msg *msg;
6000 int ret;
6001
6002 msg = nlmsg_alloc();
6003 if (!msg)
6004 return;
6005
6006 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
6007 NL80211_CMD_FRAME_WAIT_CANCEL, 0);
6008
6009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6010 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6011
6012 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6013 msg = NULL;
6014 if (ret)
6015 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6016 "(%s)", ret, strerror(-ret));
6017
6018 nla_put_failure:
6019 nlmsg_free(msg);
6020 }
6021
6022
6023 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6024 unsigned int duration)
6025 {
6026 struct i802_bss *bss = priv;
6027 struct wpa_driver_nl80211_data *drv = bss->drv;
6028 struct nl_msg *msg;
6029 int ret;
6030 u64 cookie;
6031
6032 msg = nlmsg_alloc();
6033 if (!msg)
6034 return -1;
6035
6036 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
6037 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
6038
6039 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6040 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6041 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6042
6043 cookie = 0;
6044 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6045 if (ret == 0) {
6046 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6047 "0x%llx for freq=%u MHz duration=%u",
6048 (long long unsigned int) cookie, freq, duration);
6049 drv->remain_on_chan_cookie = cookie;
6050 return 0;
6051 }
6052 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6053 "(freq=%d duration=%u): %d (%s)",
6054 freq, duration, ret, strerror(-ret));
6055 nla_put_failure:
6056 return -1;
6057 }
6058
6059
6060 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6061 {
6062 struct i802_bss *bss = priv;
6063 struct wpa_driver_nl80211_data *drv = bss->drv;
6064 struct nl_msg *msg;
6065 int ret;
6066
6067 if (!drv->pending_remain_on_chan) {
6068 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6069 "to cancel");
6070 return -1;
6071 }
6072
6073 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6074 "0x%llx",
6075 (long long unsigned int) drv->remain_on_chan_cookie);
6076
6077 msg = nlmsg_alloc();
6078 if (!msg)
6079 return -1;
6080
6081 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
6082 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
6083
6084 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6085 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
6086
6087 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6088 if (ret == 0)
6089 return 0;
6090 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6091 "%d (%s)", ret, strerror(-ret));
6092 nla_put_failure:
6093 return -1;
6094 }
6095
6096
6097 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
6098 {
6099 struct i802_bss *bss = priv;
6100 struct wpa_driver_nl80211_data *drv = bss->drv;
6101
6102 if (drv->nlmode != NL80211_IFTYPE_STATION) {
6103 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
6104 "allowed in station mode (iftype=%d)",
6105 drv->nlmode);
6106 return -1;
6107 }
6108
6109 if (!report) {
6110 if (drv->nl_handle_preq) {
6111 eloop_unregister_read_sock(
6112 nl_socket_get_fd(drv->nl_handle_preq));
6113 nl_cache_free(drv->nl_cache_preq);
6114 nl80211_handle_destroy(drv->nl_handle_preq);
6115 drv->nl_handle_preq = NULL;
6116 }
6117 return 0;
6118 }
6119
6120 if (drv->nl_handle_preq) {
6121 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6122 "already on!");
6123 return 0;
6124 }
6125
6126 drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
6127 if (drv->nl_handle_preq == NULL) {
6128 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
6129 "netlink callbacks (preq)");
6130 goto out_err1;
6131 }
6132
6133 if (genl_connect(drv->nl_handle_preq)) {
6134 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
6135 "generic netlink (preq)");
6136 goto out_err2;
6137 return -1;
6138 }
6139
6140 #ifdef CONFIG_LIBNL20
6141 if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
6142 &drv->nl_cache_preq) < 0) {
6143 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
6144 "netlink cache (preq)");
6145 goto out_err2;
6146 }
6147 #else /* CONFIG_LIBNL20 */
6148 drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
6149 if (drv->nl_cache_preq == NULL) {
6150 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
6151 "netlink cache (preq)");
6152 goto out_err2;
6153 }
6154 #endif /* CONFIG_LIBNL20 */
6155
6156 if (nl80211_register_frame(drv, drv->nl_handle_preq,
6157 (WLAN_FC_TYPE_MGMT << 2) |
6158 (WLAN_FC_STYPE_PROBE_REQ << 4),
6159 NULL, 0) < 0) {
6160 goto out_err3;
6161 }
6162
6163 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
6164 wpa_driver_nl80211_event_receive, drv,
6165 drv->nl_handle_preq);
6166
6167 return 0;
6168
6169 out_err3:
6170 nl_cache_free(drv->nl_cache_preq);
6171 out_err2:
6172 nl80211_handle_destroy(drv->nl_handle_preq);
6173 drv->nl_handle_preq = NULL;
6174 out_err1:
6175 return -1;
6176 }
6177
6178
6179 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6180 int ifindex, int disabled)
6181 {
6182 struct nl_msg *msg;
6183 struct nlattr *bands, *band;
6184 int ret;
6185
6186 msg = nlmsg_alloc();
6187 if (!msg)
6188 return -1;
6189
6190 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
6191 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
6192 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6193
6194 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6195 if (!bands)
6196 goto nla_put_failure;
6197
6198 /*
6199 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6200 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6201 * rates. All 5 GHz rates are left enabled.
6202 */
6203 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6204 if (!band)
6205 goto nla_put_failure;
6206 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
6207 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
6208 nla_nest_end(msg, band);
6209
6210 nla_nest_end(msg, bands);
6211
6212 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6213 msg = NULL;
6214 if (ret) {
6215 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6216 "(%s)", ret, strerror(-ret));
6217 }
6218
6219 return ret;
6220
6221 nla_put_failure:
6222 nlmsg_free(msg);
6223 return -1;
6224 }
6225
6226
6227 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
6228 {
6229 struct i802_bss *bss = priv;
6230 struct wpa_driver_nl80211_data *drv = bss->drv;
6231 drv->disable_11b_rates = disabled;
6232 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
6233 }
6234
6235
6236 static int wpa_driver_nl80211_deinit_ap(void *priv)
6237 {
6238 struct i802_bss *bss = priv;
6239 struct wpa_driver_nl80211_data *drv = bss->drv;
6240 if (drv->nlmode != NL80211_IFTYPE_AP)
6241 return -1;
6242 wpa_driver_nl80211_del_beacon(drv);
6243 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
6244 }
6245
6246
6247 static void wpa_driver_nl80211_resume(void *priv)
6248 {
6249 struct i802_bss *bss = priv;
6250 struct wpa_driver_nl80211_data *drv = bss->drv;
6251 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
6252 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
6253 "resume event");
6254 }
6255 }
6256
6257
6258 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
6259 const u8 *ies, size_t ies_len)
6260 {
6261 struct i802_bss *bss = priv;
6262 struct wpa_driver_nl80211_data *drv = bss->drv;
6263 int ret;
6264 u8 *data, *pos;
6265 size_t data_len;
6266 u8 own_addr[ETH_ALEN];
6267
6268 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
6269 return -1;
6270
6271 if (action != 1) {
6272 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
6273 "action %d", action);
6274 return -1;
6275 }
6276
6277 /*
6278 * Action frame payload:
6279 * Category[1] = 6 (Fast BSS Transition)
6280 * Action[1] = 1 (Fast BSS Transition Request)
6281 * STA Address
6282 * Target AP Address
6283 * FT IEs
6284 */
6285
6286 data_len = 2 + 2 * ETH_ALEN + ies_len;
6287 data = os_malloc(data_len);
6288 if (data == NULL)
6289 return -1;
6290 pos = data;
6291 *pos++ = 0x06; /* FT Action category */
6292 *pos++ = action;
6293 os_memcpy(pos, own_addr, ETH_ALEN);
6294 pos += ETH_ALEN;
6295 os_memcpy(pos, target_ap, ETH_ALEN);
6296 pos += ETH_ALEN;
6297 os_memcpy(pos, ies, ies_len);
6298
6299 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
6300 drv->bssid, own_addr, drv->bssid,
6301 data, data_len);
6302 os_free(data);
6303
6304 return ret;
6305 }
6306
6307
6308 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6309 {
6310 struct i802_bss *bss = priv;
6311 struct wpa_driver_nl80211_data *drv = bss->drv;
6312 struct nl_msg *msg, *cqm = NULL;
6313
6314 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6315 "hysteresis=%d", threshold, hysteresis);
6316
6317 msg = nlmsg_alloc();
6318 if (!msg)
6319 return -1;
6320
6321 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
6322 0, NL80211_CMD_SET_CQM, 0);
6323
6324 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
6325
6326 cqm = nlmsg_alloc();
6327 if (cqm == NULL)
6328 return -1;
6329
6330 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
6331 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
6332 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
6333
6334 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6335 return 0;
6336 msg = NULL;
6337
6338 nla_put_failure:
6339 if (cqm)
6340 nlmsg_free(cqm);
6341 nlmsg_free(msg);
6342 return -1;
6343 }
6344
6345
6346 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6347 int encrypt)
6348 {
6349 struct i802_bss *bss = priv;
6350 struct wpa_driver_nl80211_data *drv = bss->drv;
6351 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
6352 }
6353
6354
6355 static int nl80211_set_intra_bss(void *priv, int enabled)
6356 {
6357 struct i802_bss *bss = priv;
6358 struct wpa_driver_nl80211_data *drv = bss->drv;
6359 struct nl_msg *msg;
6360
6361 msg = nlmsg_alloc();
6362 if (!msg)
6363 return -ENOMEM;
6364
6365 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
6366 NL80211_CMD_SET_BSS, 0);
6367
6368 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6369 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
6370
6371 return send_and_recv_msgs(drv, msg, NULL, NULL);
6372 nla_put_failure:
6373 return -ENOBUFS;
6374 }
6375
6376
6377 static int nl80211_set_param(void *priv, const char *param)
6378 {
6379 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6380 if (param == NULL)
6381 return 0;
6382
6383 #ifdef CONFIG_P2P
6384 if (os_strstr(param, "use_p2p_group_interface=1")) {
6385 struct i802_bss *bss = priv;
6386 struct wpa_driver_nl80211_data *drv = bss->drv;
6387
6388 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6389 "interface");
6390 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6391 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6392 }
6393 #endif /* CONFIG_P2P */
6394
6395 return 0;
6396 }
6397
6398
6399 static void * nl80211_global_init(void)
6400 {
6401 struct nl80211_global *global;
6402 global = os_zalloc(sizeof(*global));
6403 if (global == NULL)
6404 return NULL;
6405 dl_list_init(&global->interfaces);
6406 return global;
6407 }
6408
6409
6410 static void nl80211_global_deinit(void *priv)
6411 {
6412 struct nl80211_global *global = priv;
6413 if (global == NULL)
6414 return;
6415 if (!dl_list_empty(&global->interfaces)) {
6416 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6417 "nl80211_global_deinit",
6418 dl_list_len(&global->interfaces));
6419 }
6420 os_free(global);
6421 }
6422
6423
6424 static const char * nl80211_get_radio_name(void *priv)
6425 {
6426 struct i802_bss *bss = priv;
6427 struct wpa_driver_nl80211_data *drv = bss->drv;
6428 return drv->phyname;
6429 }
6430
6431
6432 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
6433 .name = "nl80211",
6434 .desc = "Linux nl80211/cfg80211",
6435 .get_bssid = wpa_driver_nl80211_get_bssid,
6436 .get_ssid = wpa_driver_nl80211_get_ssid,
6437 .set_key = wpa_driver_nl80211_set_key,
6438 .scan2 = wpa_driver_nl80211_scan,
6439 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
6440 .deauthenticate = wpa_driver_nl80211_deauthenticate,
6441 .disassociate = wpa_driver_nl80211_disassociate,
6442 .authenticate = wpa_driver_nl80211_authenticate,
6443 .associate = wpa_driver_nl80211_associate,
6444 .global_init = nl80211_global_init,
6445 .global_deinit = nl80211_global_deinit,
6446 .init2 = wpa_driver_nl80211_init,
6447 .deinit = wpa_driver_nl80211_deinit,
6448 .get_capa = wpa_driver_nl80211_get_capa,
6449 .set_operstate = wpa_driver_nl80211_set_operstate,
6450 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6451 .set_country = wpa_driver_nl80211_set_country,
6452 .set_beacon = wpa_driver_nl80211_set_beacon,
6453 .if_add = wpa_driver_nl80211_if_add,
6454 .if_remove = wpa_driver_nl80211_if_remove,
6455 .send_mlme = wpa_driver_nl80211_send_mlme,
6456 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
6457 .sta_add = wpa_driver_nl80211_sta_add,
6458 .sta_remove = wpa_driver_nl80211_sta_remove,
6459 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
6460 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
6461 #ifdef HOSTAPD
6462 .hapd_init = i802_init,
6463 .hapd_deinit = i802_deinit,
6464 .get_seqnum = i802_get_seqnum,
6465 .flush = i802_flush,
6466 .read_sta_data = i802_read_sta_data,
6467 .get_inact_sec = i802_get_inact_sec,
6468 .sta_clear_stats = i802_sta_clear_stats,
6469 .set_rts = i802_set_rts,
6470 .set_frag = i802_set_frag,
6471 .set_rate_sets = i802_set_rate_sets,
6472 .set_cts_protect = i802_set_cts_protect,
6473 .set_preamble = i802_set_preamble,
6474 .set_short_slot_time = i802_set_short_slot_time,
6475 .set_tx_queue_params = i802_set_tx_queue_params,
6476 .set_sta_vlan = i802_set_sta_vlan,
6477 .set_wds_sta = i802_set_wds_sta,
6478 .set_ht_params = i802_set_ht_params,
6479 #endif /* HOSTAPD */
6480 #if defined(HOSTAPD) || defined(CONFIG_AP)
6481 .sta_deauth = i802_sta_deauth,
6482 .sta_disassoc = i802_sta_disassoc,
6483 #endif /* HOSTAPD || CONFIG_AP */
6484 .set_freq = i802_set_freq,
6485 .send_action = wpa_driver_nl80211_send_action,
6486 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
6487 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
6488 .cancel_remain_on_channel =
6489 wpa_driver_nl80211_cancel_remain_on_channel,
6490 .probe_req_report = wpa_driver_nl80211_probe_req_report,
6491 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
6492 .deinit_ap = wpa_driver_nl80211_deinit_ap,
6493 .resume = wpa_driver_nl80211_resume,
6494 .send_ft_action = nl80211_send_ft_action,
6495 .signal_monitor = nl80211_signal_monitor,
6496 .send_frame = nl80211_send_frame,
6497 .set_intra_bss = nl80211_set_intra_bss,
6498 .set_param = nl80211_set_param,
6499 .get_radio_name = nl80211_get_radio_name,
6500 };
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