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Convert os_realloc() for an array to use os_realloc_array()
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
1 /*
2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2012, 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 software may be distributed under the terms of the BSD license.
10 * See README for more details.
11 */
12
13 #include "includes.h"
14 #include <sys/ioctl.h>
15 #include <sys/types.h>
16 #include <sys/stat.h>
17 #include <fcntl.h>
18 #include <net/if.h>
19 #include <netlink/genl/genl.h>
20 #include <netlink/genl/family.h>
21 #include <netlink/genl/ctrl.h>
22 #include <linux/rtnetlink.h>
23 #include <netpacket/packet.h>
24 #include <linux/filter.h>
25 #include <linux/errqueue.h>
26 #include "nl80211_copy.h"
27
28 #include "common.h"
29 #include "eloop.h"
30 #include "utils/list.h"
31 #include "common/ieee802_11_defs.h"
32 #include "common/ieee802_11_common.h"
33 #include "l2_packet/l2_packet.h"
34 #include "netlink.h"
35 #include "linux_ioctl.h"
36 #include "radiotap.h"
37 #include "radiotap_iter.h"
38 #include "rfkill.h"
39 #include "driver.h"
40
41 #ifndef SO_WIFI_STATUS
42 # if defined(__sparc__)
43 # define SO_WIFI_STATUS 0x0025
44 # elif defined(__parisc__)
45 # define SO_WIFI_STATUS 0x4022
46 # else
47 # define SO_WIFI_STATUS 41
48 # endif
49
50 # define SCM_WIFI_STATUS SO_WIFI_STATUS
51 #endif
52
53 #ifndef SO_EE_ORIGIN_TXSTATUS
54 #define SO_EE_ORIGIN_TXSTATUS 4
55 #endif
56
57 #ifndef PACKET_TX_TIMESTAMP
58 #define PACKET_TX_TIMESTAMP 16
59 #endif
60
61 #ifdef ANDROID
62 #include "android_drv.h"
63
64 /* system/core/libnl_2 in AOSP does not include nla_put_u32() */
65 int nla_put_u32(struct nl_msg *msg, int attrtype, uint32_t value)
66 {
67 return nla_put(msg, attrtype, sizeof(uint32_t), &value);
68 }
69 #endif /* ANDROID */
70 #ifdef CONFIG_LIBNL20
71 /* libnl 2.0 compatibility code */
72 #define nl_handle nl_sock
73 #define nl80211_handle_alloc nl_socket_alloc_cb
74 #define nl80211_handle_destroy nl_socket_free
75 #else
76 /*
77 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
78 * but when you free a socket again it will mess up its bitmap and
79 * and use the wrong number the next time it needs a socket ID.
80 * Therefore, we wrap the handle alloc/destroy and add our own pid
81 * accounting.
82 */
83 static uint32_t port_bitmap[32] = { 0 };
84
85 static struct nl_handle *nl80211_handle_alloc(void *cb)
86 {
87 struct nl_handle *handle;
88 uint32_t pid = getpid() & 0x3FFFFF;
89 int i;
90
91 handle = nl_handle_alloc_cb(cb);
92
93 for (i = 0; i < 1024; i++) {
94 if (port_bitmap[i / 32] & (1 << (i % 32)))
95 continue;
96 port_bitmap[i / 32] |= 1 << (i % 32);
97 pid += i << 22;
98 break;
99 }
100
101 nl_socket_set_local_port(handle, pid);
102
103 return handle;
104 }
105
106 static void nl80211_handle_destroy(struct nl_handle *handle)
107 {
108 uint32_t port = nl_socket_get_local_port(handle);
109
110 port >>= 22;
111 port_bitmap[port / 32] &= ~(1 << (port % 32));
112
113 nl_handle_destroy(handle);
114 }
115 #endif /* CONFIG_LIBNL20 */
116
117
118 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
119 {
120 struct nl_handle *handle;
121
122 handle = nl80211_handle_alloc(cb);
123 if (handle == NULL) {
124 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
125 "callbacks (%s)", dbg);
126 return NULL;
127 }
128
129 if (genl_connect(handle)) {
130 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
131 "netlink (%s)", dbg);
132 nl80211_handle_destroy(handle);
133 return NULL;
134 }
135
136 return handle;
137 }
138
139
140 static void nl_destroy_handles(struct nl_handle **handle)
141 {
142 if (*handle == NULL)
143 return;
144 nl80211_handle_destroy(*handle);
145 *handle = NULL;
146 }
147
148
149 #ifndef IFF_LOWER_UP
150 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
151 #endif
152 #ifndef IFF_DORMANT
153 #define IFF_DORMANT 0x20000 /* driver signals dormant */
154 #endif
155
156 #ifndef IF_OPER_DORMANT
157 #define IF_OPER_DORMANT 5
158 #endif
159 #ifndef IF_OPER_UP
160 #define IF_OPER_UP 6
161 #endif
162
163 struct nl80211_global {
164 struct dl_list interfaces;
165 int if_add_ifindex;
166 struct netlink_data *netlink;
167 struct nl_cb *nl_cb;
168 struct nl_handle *nl;
169 int nl80211_id;
170 int ioctl_sock; /* socket for ioctl() use */
171
172 struct nl_handle *nl_event;
173 };
174
175 struct nl80211_wiphy_data {
176 struct dl_list list;
177 struct dl_list bsss;
178 struct dl_list drvs;
179
180 struct nl_handle *nl_beacons;
181 struct nl_cb *nl_cb;
182
183 int wiphy_idx;
184 };
185
186 static void nl80211_global_deinit(void *priv);
187 static void wpa_driver_nl80211_deinit(void *priv);
188
189 struct i802_bss {
190 struct wpa_driver_nl80211_data *drv;
191 struct i802_bss *next;
192 int ifindex;
193 char ifname[IFNAMSIZ + 1];
194 char brname[IFNAMSIZ];
195 unsigned int beacon_set:1;
196 unsigned int added_if_into_bridge:1;
197 unsigned int added_bridge:1;
198 unsigned int in_deinit:1;
199
200 u8 addr[ETH_ALEN];
201
202 int freq;
203
204 struct nl_handle *nl_preq, *nl_mgmt;
205 struct nl_cb *nl_cb;
206
207 struct nl80211_wiphy_data *wiphy_data;
208 struct dl_list wiphy_list;
209 };
210
211 struct wpa_driver_nl80211_data {
212 struct nl80211_global *global;
213 struct dl_list list;
214 struct dl_list wiphy_list;
215 char phyname[32];
216 void *ctx;
217 int ifindex;
218 int if_removed;
219 int if_disabled;
220 int ignore_if_down_event;
221 struct rfkill_data *rfkill;
222 struct wpa_driver_capa capa;
223 int has_capability;
224
225 int operstate;
226
227 int scan_complete_events;
228
229 struct nl_cb *nl_cb;
230
231 u8 auth_bssid[ETH_ALEN];
232 u8 bssid[ETH_ALEN];
233 int associated;
234 u8 ssid[32];
235 size_t ssid_len;
236 enum nl80211_iftype nlmode;
237 enum nl80211_iftype ap_scan_as_station;
238 unsigned int assoc_freq;
239
240 int monitor_sock;
241 int monitor_ifidx;
242 int monitor_refcount;
243
244 unsigned int disabled_11b_rates:1;
245 unsigned int pending_remain_on_chan:1;
246 unsigned int in_interface_list:1;
247 unsigned int device_ap_sme:1;
248 unsigned int poll_command_supported:1;
249 unsigned int data_tx_status:1;
250 unsigned int scan_for_auth:1;
251 unsigned int retry_auth:1;
252 unsigned int use_monitor:1;
253
254 u64 remain_on_chan_cookie;
255 u64 send_action_cookie;
256
257 unsigned int last_mgmt_freq;
258
259 struct wpa_driver_scan_filter *filter_ssids;
260 size_t num_filter_ssids;
261
262 struct i802_bss first_bss;
263
264 int eapol_tx_sock;
265
266 #ifdef HOSTAPD
267 int eapol_sock; /* socket for EAPOL frames */
268
269 int default_if_indices[16];
270 int *if_indices;
271 int num_if_indices;
272
273 int last_freq;
274 int last_freq_ht;
275 #endif /* HOSTAPD */
276
277 /* From failed authentication command */
278 int auth_freq;
279 u8 auth_bssid_[ETH_ALEN];
280 u8 auth_ssid[32];
281 size_t auth_ssid_len;
282 int auth_alg;
283 u8 *auth_ie;
284 size_t auth_ie_len;
285 u8 auth_wep_key[4][16];
286 size_t auth_wep_key_len[4];
287 int auth_wep_tx_keyidx;
288 int auth_local_state_change;
289 int auth_p2p;
290 };
291
292
293 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
294 void *timeout_ctx);
295 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
296 enum nl80211_iftype nlmode);
297 static int
298 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
299 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
300 const u8 *addr, int cmd, u16 reason_code,
301 int local_state_change);
302 static void nl80211_remove_monitor_interface(
303 struct wpa_driver_nl80211_data *drv);
304 static int nl80211_send_frame_cmd(struct i802_bss *bss,
305 unsigned int freq, unsigned int wait,
306 const u8 *buf, size_t buf_len, u64 *cookie,
307 int no_cck, int no_ack, int offchanok);
308 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
309 #ifdef ANDROID
310 static int android_pno_start(struct i802_bss *bss,
311 struct wpa_driver_scan_params *params);
312 static int android_pno_stop(struct i802_bss *bss);
313 #endif /* ANDROID */
314
315 #ifdef HOSTAPD
316 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
317 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
318 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
319 static int wpa_driver_nl80211_if_remove(void *priv,
320 enum wpa_driver_if_type type,
321 const char *ifname);
322 #else /* HOSTAPD */
323 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
324 {
325 }
326
327 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
328 {
329 }
330
331 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
332 {
333 return 0;
334 }
335 #endif /* HOSTAPD */
336
337 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
338 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
339 int ifindex, int disabled);
340
341 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
342 static int wpa_driver_nl80211_authenticate_retry(
343 struct wpa_driver_nl80211_data *drv);
344
345
346 static int is_ap_interface(enum nl80211_iftype nlmode)
347 {
348 return (nlmode == NL80211_IFTYPE_AP ||
349 nlmode == NL80211_IFTYPE_P2P_GO);
350 }
351
352
353 static int is_sta_interface(enum nl80211_iftype nlmode)
354 {
355 return (nlmode == NL80211_IFTYPE_STATION ||
356 nlmode == NL80211_IFTYPE_P2P_CLIENT);
357 }
358
359
360 static int is_p2p_interface(enum nl80211_iftype nlmode)
361 {
362 return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
363 nlmode == NL80211_IFTYPE_P2P_GO);
364 }
365
366
367 struct nl80211_bss_info_arg {
368 struct wpa_driver_nl80211_data *drv;
369 struct wpa_scan_results *res;
370 unsigned int assoc_freq;
371 u8 assoc_bssid[ETH_ALEN];
372 };
373
374 static int bss_info_handler(struct nl_msg *msg, void *arg);
375
376
377 /* nl80211 code */
378 static int ack_handler(struct nl_msg *msg, void *arg)
379 {
380 int *err = arg;
381 *err = 0;
382 return NL_STOP;
383 }
384
385 static int finish_handler(struct nl_msg *msg, void *arg)
386 {
387 int *ret = arg;
388 *ret = 0;
389 return NL_SKIP;
390 }
391
392 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
393 void *arg)
394 {
395 int *ret = arg;
396 *ret = err->error;
397 return NL_SKIP;
398 }
399
400
401 static int no_seq_check(struct nl_msg *msg, void *arg)
402 {
403 return NL_OK;
404 }
405
406
407 static int send_and_recv(struct nl80211_global *global,
408 struct nl_handle *nl_handle, struct nl_msg *msg,
409 int (*valid_handler)(struct nl_msg *, void *),
410 void *valid_data)
411 {
412 struct nl_cb *cb;
413 int err = -ENOMEM;
414
415 cb = nl_cb_clone(global->nl_cb);
416 if (!cb)
417 goto out;
418
419 err = nl_send_auto_complete(nl_handle, msg);
420 if (err < 0)
421 goto out;
422
423 err = 1;
424
425 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
426 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
427 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
428
429 if (valid_handler)
430 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
431 valid_handler, valid_data);
432
433 while (err > 0)
434 nl_recvmsgs(nl_handle, cb);
435 out:
436 nl_cb_put(cb);
437 nlmsg_free(msg);
438 return err;
439 }
440
441
442 static int send_and_recv_msgs_global(struct nl80211_global *global,
443 struct nl_msg *msg,
444 int (*valid_handler)(struct nl_msg *, void *),
445 void *valid_data)
446 {
447 return send_and_recv(global, global->nl, msg, valid_handler,
448 valid_data);
449 }
450
451
452 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
453 struct nl_msg *msg,
454 int (*valid_handler)(struct nl_msg *, void *),
455 void *valid_data)
456 {
457 return send_and_recv(drv->global, drv->global->nl, msg,
458 valid_handler, valid_data);
459 }
460
461
462 struct family_data {
463 const char *group;
464 int id;
465 };
466
467
468 static int family_handler(struct nl_msg *msg, void *arg)
469 {
470 struct family_data *res = arg;
471 struct nlattr *tb[CTRL_ATTR_MAX + 1];
472 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
473 struct nlattr *mcgrp;
474 int i;
475
476 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
477 genlmsg_attrlen(gnlh, 0), NULL);
478 if (!tb[CTRL_ATTR_MCAST_GROUPS])
479 return NL_SKIP;
480
481 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
482 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
483 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
484 nla_len(mcgrp), NULL);
485 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
486 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
487 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
488 res->group,
489 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
490 continue;
491 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
492 break;
493 };
494
495 return NL_SKIP;
496 }
497
498
499 static int nl_get_multicast_id(struct nl80211_global *global,
500 const char *family, const char *group)
501 {
502 struct nl_msg *msg;
503 int ret = -1;
504 struct family_data res = { group, -ENOENT };
505
506 msg = nlmsg_alloc();
507 if (!msg)
508 return -ENOMEM;
509 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
510 0, 0, CTRL_CMD_GETFAMILY, 0);
511 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
512
513 ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
514 msg = NULL;
515 if (ret == 0)
516 ret = res.id;
517
518 nla_put_failure:
519 nlmsg_free(msg);
520 return ret;
521 }
522
523
524 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
525 struct nl_msg *msg, int flags, uint8_t cmd)
526 {
527 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
528 0, flags, cmd, 0);
529 }
530
531
532 struct wiphy_idx_data {
533 int wiphy_idx;
534 };
535
536
537 static int netdev_info_handler(struct nl_msg *msg, void *arg)
538 {
539 struct nlattr *tb[NL80211_ATTR_MAX + 1];
540 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
541 struct wiphy_idx_data *info = arg;
542
543 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
544 genlmsg_attrlen(gnlh, 0), NULL);
545
546 if (tb[NL80211_ATTR_WIPHY])
547 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
548
549 return NL_SKIP;
550 }
551
552
553 static int nl80211_get_wiphy_index(struct i802_bss *bss)
554 {
555 struct nl_msg *msg;
556 struct wiphy_idx_data data = {
557 .wiphy_idx = -1,
558 };
559
560 msg = nlmsg_alloc();
561 if (!msg)
562 return -1;
563
564 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
565
566 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
567
568 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
569 return data.wiphy_idx;
570 msg = NULL;
571 nla_put_failure:
572 nlmsg_free(msg);
573 return -1;
574 }
575
576
577 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
578 struct nl80211_wiphy_data *w)
579 {
580 struct nl_msg *msg;
581 int ret = -1;
582
583 msg = nlmsg_alloc();
584 if (!msg)
585 return -1;
586
587 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
588
589 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
590
591 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
592 msg = NULL;
593 if (ret) {
594 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
595 "failed: ret=%d (%s)",
596 ret, strerror(-ret));
597 goto nla_put_failure;
598 }
599 ret = 0;
600 nla_put_failure:
601 nlmsg_free(msg);
602 return ret;
603 }
604
605
606 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
607 {
608 struct nl80211_wiphy_data *w = eloop_ctx;
609
610 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
611
612 nl_recvmsgs(handle, w->nl_cb);
613 }
614
615
616 static int process_beacon_event(struct nl_msg *msg, void *arg)
617 {
618 struct nl80211_wiphy_data *w = arg;
619 struct wpa_driver_nl80211_data *drv;
620 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
621 struct nlattr *tb[NL80211_ATTR_MAX + 1];
622 union wpa_event_data event;
623
624 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
625 genlmsg_attrlen(gnlh, 0), NULL);
626
627 if (gnlh->cmd != NL80211_CMD_FRAME) {
628 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
629 gnlh->cmd);
630 return NL_SKIP;
631 }
632
633 if (!tb[NL80211_ATTR_FRAME])
634 return NL_SKIP;
635
636 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
637 wiphy_list) {
638 os_memset(&event, 0, sizeof(event));
639 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
640 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
641 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
642 }
643
644 return NL_SKIP;
645 }
646
647
648 static struct nl80211_wiphy_data *
649 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
650 {
651 static DEFINE_DL_LIST(nl80211_wiphys);
652 struct nl80211_wiphy_data *w;
653 int wiphy_idx, found = 0;
654 struct i802_bss *tmp_bss;
655
656 if (bss->wiphy_data != NULL)
657 return bss->wiphy_data;
658
659 wiphy_idx = nl80211_get_wiphy_index(bss);
660
661 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
662 if (w->wiphy_idx == wiphy_idx)
663 goto add;
664 }
665
666 /* alloc new one */
667 w = os_zalloc(sizeof(*w));
668 if (w == NULL)
669 return NULL;
670 w->wiphy_idx = wiphy_idx;
671 dl_list_init(&w->bsss);
672 dl_list_init(&w->drvs);
673
674 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
675 if (!w->nl_cb) {
676 os_free(w);
677 return NULL;
678 }
679 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
680 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
681 w);
682
683 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
684 "wiphy beacons");
685 if (w->nl_beacons == NULL) {
686 os_free(w);
687 return NULL;
688 }
689
690 if (nl80211_register_beacons(bss->drv, w)) {
691 nl_destroy_handles(&w->nl_beacons);
692 os_free(w);
693 return NULL;
694 }
695
696 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons),
697 nl80211_recv_beacons, w, w->nl_beacons);
698
699 dl_list_add(&nl80211_wiphys, &w->list);
700
701 add:
702 /* drv entry for this bss already there? */
703 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
704 if (tmp_bss->drv == bss->drv) {
705 found = 1;
706 break;
707 }
708 }
709 /* if not add it */
710 if (!found)
711 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
712
713 dl_list_add(&w->bsss, &bss->wiphy_list);
714 bss->wiphy_data = w;
715 return w;
716 }
717
718
719 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
720 {
721 struct nl80211_wiphy_data *w = bss->wiphy_data;
722 struct i802_bss *tmp_bss;
723 int found = 0;
724
725 if (w == NULL)
726 return;
727 bss->wiphy_data = NULL;
728 dl_list_del(&bss->wiphy_list);
729
730 /* still any for this drv present? */
731 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
732 if (tmp_bss->drv == bss->drv) {
733 found = 1;
734 break;
735 }
736 }
737 /* if not remove it */
738 if (!found)
739 dl_list_del(&bss->drv->wiphy_list);
740
741 if (!dl_list_empty(&w->bsss))
742 return;
743
744 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons));
745
746 nl_cb_put(w->nl_cb);
747 nl_destroy_handles(&w->nl_beacons);
748 dl_list_del(&w->list);
749 os_free(w);
750 }
751
752
753 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
754 {
755 struct i802_bss *bss = priv;
756 struct wpa_driver_nl80211_data *drv = bss->drv;
757 if (!drv->associated)
758 return -1;
759 os_memcpy(bssid, drv->bssid, ETH_ALEN);
760 return 0;
761 }
762
763
764 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
765 {
766 struct i802_bss *bss = priv;
767 struct wpa_driver_nl80211_data *drv = bss->drv;
768 if (!drv->associated)
769 return -1;
770 os_memcpy(ssid, drv->ssid, drv->ssid_len);
771 return drv->ssid_len;
772 }
773
774
775 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
776 char *buf, size_t len, int del)
777 {
778 union wpa_event_data event;
779
780 os_memset(&event, 0, sizeof(event));
781 if (len > sizeof(event.interface_status.ifname))
782 len = sizeof(event.interface_status.ifname) - 1;
783 os_memcpy(event.interface_status.ifname, buf, len);
784 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
785 EVENT_INTERFACE_ADDED;
786
787 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
788 del ? "DEL" : "NEW",
789 event.interface_status.ifname,
790 del ? "removed" : "added");
791
792 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
793 if (del) {
794 if (drv->if_removed) {
795 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
796 "already set - ignore event");
797 return;
798 }
799 drv->if_removed = 1;
800 } else {
801 if (if_nametoindex(drv->first_bss.ifname) == 0) {
802 wpa_printf(MSG_DEBUG, "nl80211: Interface %s "
803 "does not exist - ignore "
804 "RTM_NEWLINK",
805 drv->first_bss.ifname);
806 return;
807 }
808 if (!drv->if_removed) {
809 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
810 "already cleared - ignore event");
811 return;
812 }
813 drv->if_removed = 0;
814 }
815 }
816
817 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
818 }
819
820
821 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
822 u8 *buf, size_t len)
823 {
824 int attrlen, rta_len;
825 struct rtattr *attr;
826
827 attrlen = len;
828 attr = (struct rtattr *) buf;
829
830 rta_len = RTA_ALIGN(sizeof(struct rtattr));
831 while (RTA_OK(attr, attrlen)) {
832 if (attr->rta_type == IFLA_IFNAME) {
833 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
834 == 0)
835 return 1;
836 else
837 break;
838 }
839 attr = RTA_NEXT(attr, attrlen);
840 }
841
842 return 0;
843 }
844
845
846 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
847 int ifindex, u8 *buf, size_t len)
848 {
849 if (drv->ifindex == ifindex)
850 return 1;
851
852 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
853 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
854 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
855 "interface");
856 wpa_driver_nl80211_finish_drv_init(drv);
857 return 1;
858 }
859
860 return 0;
861 }
862
863
864 static struct wpa_driver_nl80211_data *
865 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
866 {
867 struct wpa_driver_nl80211_data *drv;
868 dl_list_for_each(drv, &global->interfaces,
869 struct wpa_driver_nl80211_data, list) {
870 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
871 have_ifidx(drv, idx))
872 return drv;
873 }
874 return NULL;
875 }
876
877
878 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
879 struct ifinfomsg *ifi,
880 u8 *buf, size_t len)
881 {
882 struct nl80211_global *global = ctx;
883 struct wpa_driver_nl80211_data *drv;
884 int attrlen, rta_len;
885 struct rtattr *attr;
886 u32 brid = 0;
887 char namebuf[IFNAMSIZ];
888
889 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
890 if (!drv) {
891 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
892 "ifindex %d", ifi->ifi_index);
893 return;
894 }
895
896 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
897 "(%s%s%s%s)",
898 drv->operstate, ifi->ifi_flags,
899 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
900 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
901 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
902 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
903
904 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
905 if (if_indextoname(ifi->ifi_index, namebuf) &&
906 linux_iface_up(drv->global->ioctl_sock,
907 drv->first_bss.ifname) > 0) {
908 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
909 "event since interface %s is up", namebuf);
910 return;
911 }
912 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
913 if (drv->ignore_if_down_event) {
914 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
915 "event generated by mode change");
916 drv->ignore_if_down_event = 0;
917 } else {
918 drv->if_disabled = 1;
919 wpa_supplicant_event(drv->ctx,
920 EVENT_INTERFACE_DISABLED, NULL);
921 }
922 }
923
924 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
925 if (if_indextoname(ifi->ifi_index, namebuf) &&
926 linux_iface_up(drv->global->ioctl_sock,
927 drv->first_bss.ifname) == 0) {
928 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
929 "event since interface %s is down",
930 namebuf);
931 } else if (if_nametoindex(drv->first_bss.ifname) == 0) {
932 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
933 "event since interface %s does not exist",
934 drv->first_bss.ifname);
935 } else if (drv->if_removed) {
936 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
937 "event since interface %s is marked "
938 "removed", drv->first_bss.ifname);
939 } else {
940 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
941 drv->if_disabled = 0;
942 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
943 NULL);
944 }
945 }
946
947 /*
948 * Some drivers send the association event before the operup event--in
949 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
950 * fails. This will hit us when wpa_supplicant does not need to do
951 * IEEE 802.1X authentication
952 */
953 if (drv->operstate == 1 &&
954 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
955 !(ifi->ifi_flags & IFF_RUNNING))
956 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
957 -1, IF_OPER_UP);
958
959 attrlen = len;
960 attr = (struct rtattr *) buf;
961 rta_len = RTA_ALIGN(sizeof(struct rtattr));
962 while (RTA_OK(attr, attrlen)) {
963 if (attr->rta_type == IFLA_IFNAME) {
964 wpa_driver_nl80211_event_link(
965 drv,
966 ((char *) attr) + rta_len,
967 attr->rta_len - rta_len, 0);
968 } else if (attr->rta_type == IFLA_MASTER)
969 brid = nla_get_u32((struct nlattr *) attr);
970 attr = RTA_NEXT(attr, attrlen);
971 }
972
973 if (ifi->ifi_family == AF_BRIDGE && brid) {
974 /* device has been added to bridge */
975 if_indextoname(brid, namebuf);
976 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
977 brid, namebuf);
978 add_ifidx(drv, brid);
979 }
980 }
981
982
983 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
984 struct ifinfomsg *ifi,
985 u8 *buf, size_t len)
986 {
987 struct nl80211_global *global = ctx;
988 struct wpa_driver_nl80211_data *drv;
989 int attrlen, rta_len;
990 struct rtattr *attr;
991 u32 brid = 0;
992
993 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
994 if (!drv) {
995 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
996 "foreign ifindex %d", ifi->ifi_index);
997 return;
998 }
999
1000 attrlen = len;
1001 attr = (struct rtattr *) buf;
1002
1003 rta_len = RTA_ALIGN(sizeof(struct rtattr));
1004 while (RTA_OK(attr, attrlen)) {
1005 if (attr->rta_type == IFLA_IFNAME) {
1006 wpa_driver_nl80211_event_link(
1007 drv,
1008 ((char *) attr) + rta_len,
1009 attr->rta_len - rta_len, 1);
1010 } else if (attr->rta_type == IFLA_MASTER)
1011 brid = nla_get_u32((struct nlattr *) attr);
1012 attr = RTA_NEXT(attr, attrlen);
1013 }
1014
1015 if (ifi->ifi_family == AF_BRIDGE && brid) {
1016 /* device has been removed from bridge */
1017 char namebuf[IFNAMSIZ];
1018 if_indextoname(brid, namebuf);
1019 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1020 "%s", brid, namebuf);
1021 del_ifidx(drv, brid);
1022 }
1023 }
1024
1025
1026 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1027 const u8 *frame, size_t len)
1028 {
1029 const struct ieee80211_mgmt *mgmt;
1030 union wpa_event_data event;
1031
1032 mgmt = (const struct ieee80211_mgmt *) frame;
1033 if (len < 24 + sizeof(mgmt->u.auth)) {
1034 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1035 "frame");
1036 return;
1037 }
1038
1039 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1040 os_memset(&event, 0, sizeof(event));
1041 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1042 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1043 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1044 if (len > 24 + sizeof(mgmt->u.auth)) {
1045 event.auth.ies = mgmt->u.auth.variable;
1046 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1047 }
1048
1049 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1050 }
1051
1052
1053 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1054 {
1055 struct nl_msg *msg;
1056 int ret;
1057 struct nl80211_bss_info_arg arg;
1058
1059 os_memset(&arg, 0, sizeof(arg));
1060 msg = nlmsg_alloc();
1061 if (!msg)
1062 goto nla_put_failure;
1063
1064 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1065 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1066
1067 arg.drv = drv;
1068 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1069 msg = NULL;
1070 if (ret == 0) {
1071 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1072 "associated BSS from scan results: %u MHz",
1073 arg.assoc_freq);
1074 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1075 }
1076 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1077 "(%s)", ret, strerror(-ret));
1078 nla_put_failure:
1079 nlmsg_free(msg);
1080 return drv->assoc_freq;
1081 }
1082
1083
1084 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1085 const u8 *frame, size_t len)
1086 {
1087 const struct ieee80211_mgmt *mgmt;
1088 union wpa_event_data event;
1089 u16 status;
1090
1091 mgmt = (const struct ieee80211_mgmt *) frame;
1092 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1093 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1094 "frame");
1095 return;
1096 }
1097
1098 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1099 if (status != WLAN_STATUS_SUCCESS) {
1100 os_memset(&event, 0, sizeof(event));
1101 event.assoc_reject.bssid = mgmt->bssid;
1102 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1103 event.assoc_reject.resp_ies =
1104 (u8 *) mgmt->u.assoc_resp.variable;
1105 event.assoc_reject.resp_ies_len =
1106 len - 24 - sizeof(mgmt->u.assoc_resp);
1107 }
1108 event.assoc_reject.status_code = status;
1109
1110 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1111 return;
1112 }
1113
1114 drv->associated = 1;
1115 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1116
1117 os_memset(&event, 0, sizeof(event));
1118 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1119 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1120 event.assoc_info.resp_ies_len =
1121 len - 24 - sizeof(mgmt->u.assoc_resp);
1122 }
1123
1124 event.assoc_info.freq = drv->assoc_freq;
1125
1126 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1127 }
1128
1129
1130 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1131 enum nl80211_commands cmd, struct nlattr *status,
1132 struct nlattr *addr, struct nlattr *req_ie,
1133 struct nlattr *resp_ie)
1134 {
1135 union wpa_event_data event;
1136
1137 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1138 /*
1139 * Avoid reporting two association events that would confuse
1140 * the core code.
1141 */
1142 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1143 "when using userspace SME", cmd);
1144 return;
1145 }
1146
1147 os_memset(&event, 0, sizeof(event));
1148 if (cmd == NL80211_CMD_CONNECT &&
1149 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1150 if (addr)
1151 event.assoc_reject.bssid = nla_data(addr);
1152 if (resp_ie) {
1153 event.assoc_reject.resp_ies = nla_data(resp_ie);
1154 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1155 }
1156 event.assoc_reject.status_code = nla_get_u16(status);
1157 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1158 return;
1159 }
1160
1161 drv->associated = 1;
1162 if (addr)
1163 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1164
1165 if (req_ie) {
1166 event.assoc_info.req_ies = nla_data(req_ie);
1167 event.assoc_info.req_ies_len = nla_len(req_ie);
1168 }
1169 if (resp_ie) {
1170 event.assoc_info.resp_ies = nla_data(resp_ie);
1171 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1172 }
1173
1174 event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1175
1176 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1177 }
1178
1179
1180 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1181 struct nlattr *reason, struct nlattr *addr,
1182 struct nlattr *by_ap)
1183 {
1184 union wpa_event_data data;
1185
1186 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1187 /*
1188 * Avoid reporting two disassociation events that could
1189 * confuse the core code.
1190 */
1191 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1192 "event when using userspace SME");
1193 return;
1194 }
1195
1196 drv->associated = 0;
1197 os_memset(&data, 0, sizeof(data));
1198 if (reason)
1199 data.deauth_info.reason_code = nla_get_u16(reason);
1200 data.deauth_info.locally_generated = by_ap == NULL;
1201 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data);
1202 }
1203
1204
1205 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
1206 struct nlattr *freq, struct nlattr *type)
1207 {
1208 union wpa_event_data data;
1209 int ht_enabled = 1;
1210 int chan_offset = 0;
1211
1212 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
1213
1214 if (!freq || !type)
1215 return;
1216
1217 switch (nla_get_u32(type)) {
1218 case NL80211_CHAN_NO_HT:
1219 ht_enabled = 0;
1220 break;
1221 case NL80211_CHAN_HT20:
1222 break;
1223 case NL80211_CHAN_HT40PLUS:
1224 chan_offset = 1;
1225 break;
1226 case NL80211_CHAN_HT40MINUS:
1227 chan_offset = -1;
1228 break;
1229 }
1230
1231 data.ch_switch.freq = nla_get_u32(freq);
1232 data.ch_switch.ht_enabled = ht_enabled;
1233 data.ch_switch.ch_offset = chan_offset;
1234
1235 wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
1236 }
1237
1238
1239 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1240 enum nl80211_commands cmd, struct nlattr *addr)
1241 {
1242 union wpa_event_data event;
1243 enum wpa_event_type ev;
1244
1245 if (nla_len(addr) != ETH_ALEN)
1246 return;
1247
1248 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1249 cmd, MAC2STR((u8 *) nla_data(addr)));
1250
1251 if (cmd == NL80211_CMD_AUTHENTICATE)
1252 ev = EVENT_AUTH_TIMED_OUT;
1253 else if (cmd == NL80211_CMD_ASSOCIATE)
1254 ev = EVENT_ASSOC_TIMED_OUT;
1255 else
1256 return;
1257
1258 os_memset(&event, 0, sizeof(event));
1259 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1260 wpa_supplicant_event(drv->ctx, ev, &event);
1261 }
1262
1263
1264 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1265 struct nlattr *freq, struct nlattr *sig,
1266 const u8 *frame, size_t len)
1267 {
1268 const struct ieee80211_mgmt *mgmt;
1269 union wpa_event_data event;
1270 u16 fc, stype;
1271 int ssi_signal = 0;
1272
1273 mgmt = (const struct ieee80211_mgmt *) frame;
1274 if (len < 24) {
1275 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1276 return;
1277 }
1278
1279 fc = le_to_host16(mgmt->frame_control);
1280 stype = WLAN_FC_GET_STYPE(fc);
1281
1282 if (sig)
1283 ssi_signal = (s32) nla_get_u32(sig);
1284
1285 os_memset(&event, 0, sizeof(event));
1286 if (freq) {
1287 event.rx_action.freq = nla_get_u32(freq);
1288 drv->last_mgmt_freq = event.rx_action.freq;
1289 }
1290 if (stype == WLAN_FC_STYPE_ACTION) {
1291 event.rx_action.da = mgmt->da;
1292 event.rx_action.sa = mgmt->sa;
1293 event.rx_action.bssid = mgmt->bssid;
1294 event.rx_action.category = mgmt->u.action.category;
1295 event.rx_action.data = &mgmt->u.action.category + 1;
1296 event.rx_action.len = frame + len - event.rx_action.data;
1297 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1298 } else {
1299 event.rx_mgmt.frame = frame;
1300 event.rx_mgmt.frame_len = len;
1301 event.rx_mgmt.ssi_signal = ssi_signal;
1302 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1303 }
1304 }
1305
1306
1307 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1308 struct nlattr *cookie, const u8 *frame,
1309 size_t len, struct nlattr *ack)
1310 {
1311 union wpa_event_data event;
1312 const struct ieee80211_hdr *hdr;
1313 u16 fc;
1314
1315 if (!is_ap_interface(drv->nlmode)) {
1316 u64 cookie_val;
1317
1318 if (!cookie)
1319 return;
1320
1321 cookie_val = nla_get_u64(cookie);
1322 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1323 " cookie=0%llx%s (ack=%d)",
1324 (long long unsigned int) cookie_val,
1325 cookie_val == drv->send_action_cookie ?
1326 " (match)" : " (unknown)", ack != NULL);
1327 if (cookie_val != drv->send_action_cookie)
1328 return;
1329 }
1330
1331 hdr = (const struct ieee80211_hdr *) frame;
1332 fc = le_to_host16(hdr->frame_control);
1333
1334 os_memset(&event, 0, sizeof(event));
1335 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1336 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1337 event.tx_status.dst = hdr->addr1;
1338 event.tx_status.data = frame;
1339 event.tx_status.data_len = len;
1340 event.tx_status.ack = ack != NULL;
1341 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1342 }
1343
1344
1345 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1346 enum wpa_event_type type,
1347 const u8 *frame, size_t len)
1348 {
1349 const struct ieee80211_mgmt *mgmt;
1350 union wpa_event_data event;
1351 const u8 *bssid = NULL;
1352 u16 reason_code = 0;
1353
1354 mgmt = (const struct ieee80211_mgmt *) frame;
1355 if (len >= 24) {
1356 bssid = mgmt->bssid;
1357
1358 if (drv->associated != 0 &&
1359 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1360 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1361 /*
1362 * We have presumably received this deauth as a
1363 * response to a clear_state_mismatch() outgoing
1364 * deauth. Don't let it take us offline!
1365 */
1366 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1367 "from Unknown BSSID " MACSTR " -- ignoring",
1368 MAC2STR(bssid));
1369 return;
1370 }
1371 }
1372
1373 drv->associated = 0;
1374 os_memset(&event, 0, sizeof(event));
1375
1376 /* Note: Same offset for Reason Code in both frame subtypes */
1377 if (len >= 24 + sizeof(mgmt->u.deauth))
1378 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1379
1380 if (type == EVENT_DISASSOC) {
1381 event.disassoc_info.locally_generated =
1382 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1383 event.disassoc_info.addr = bssid;
1384 event.disassoc_info.reason_code = reason_code;
1385 if (frame + len > mgmt->u.disassoc.variable) {
1386 event.disassoc_info.ie = mgmt->u.disassoc.variable;
1387 event.disassoc_info.ie_len = frame + len -
1388 mgmt->u.disassoc.variable;
1389 }
1390 } else {
1391 event.deauth_info.locally_generated =
1392 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1393 event.deauth_info.addr = bssid;
1394 event.deauth_info.reason_code = reason_code;
1395 if (frame + len > mgmt->u.deauth.variable) {
1396 event.deauth_info.ie = mgmt->u.deauth.variable;
1397 event.deauth_info.ie_len = frame + len -
1398 mgmt->u.deauth.variable;
1399 }
1400 }
1401
1402 wpa_supplicant_event(drv->ctx, type, &event);
1403 }
1404
1405
1406 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1407 enum wpa_event_type type,
1408 const u8 *frame, size_t len)
1409 {
1410 const struct ieee80211_mgmt *mgmt;
1411 union wpa_event_data event;
1412 u16 reason_code = 0;
1413
1414 if (len < 24)
1415 return;
1416
1417 mgmt = (const struct ieee80211_mgmt *) frame;
1418
1419 os_memset(&event, 0, sizeof(event));
1420 /* Note: Same offset for Reason Code in both frame subtypes */
1421 if (len >= 24 + sizeof(mgmt->u.deauth))
1422 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1423
1424 if (type == EVENT_UNPROT_DISASSOC) {
1425 event.unprot_disassoc.sa = mgmt->sa;
1426 event.unprot_disassoc.da = mgmt->da;
1427 event.unprot_disassoc.reason_code = reason_code;
1428 } else {
1429 event.unprot_deauth.sa = mgmt->sa;
1430 event.unprot_deauth.da = mgmt->da;
1431 event.unprot_deauth.reason_code = reason_code;
1432 }
1433
1434 wpa_supplicant_event(drv->ctx, type, &event);
1435 }
1436
1437
1438 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1439 enum nl80211_commands cmd, struct nlattr *frame,
1440 struct nlattr *addr, struct nlattr *timed_out,
1441 struct nlattr *freq, struct nlattr *ack,
1442 struct nlattr *cookie, struct nlattr *sig)
1443 {
1444 if (timed_out && addr) {
1445 mlme_timeout_event(drv, cmd, addr);
1446 return;
1447 }
1448
1449 if (frame == NULL) {
1450 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1451 "data", cmd);
1452 return;
1453 }
1454
1455 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1456 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1457 nla_data(frame), nla_len(frame));
1458
1459 switch (cmd) {
1460 case NL80211_CMD_AUTHENTICATE:
1461 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1462 break;
1463 case NL80211_CMD_ASSOCIATE:
1464 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1465 break;
1466 case NL80211_CMD_DEAUTHENTICATE:
1467 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1468 nla_data(frame), nla_len(frame));
1469 break;
1470 case NL80211_CMD_DISASSOCIATE:
1471 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1472 nla_data(frame), nla_len(frame));
1473 break;
1474 case NL80211_CMD_FRAME:
1475 mlme_event_mgmt(drv, freq, sig, nla_data(frame),
1476 nla_len(frame));
1477 break;
1478 case NL80211_CMD_FRAME_TX_STATUS:
1479 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1480 nla_len(frame), ack);
1481 break;
1482 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1483 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1484 nla_data(frame), nla_len(frame));
1485 break;
1486 case NL80211_CMD_UNPROT_DISASSOCIATE:
1487 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1488 nla_data(frame), nla_len(frame));
1489 break;
1490 default:
1491 break;
1492 }
1493 }
1494
1495
1496 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1497 struct nlattr *tb[])
1498 {
1499 union wpa_event_data data;
1500
1501 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1502 os_memset(&data, 0, sizeof(data));
1503 if (tb[NL80211_ATTR_MAC]) {
1504 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1505 nla_data(tb[NL80211_ATTR_MAC]),
1506 nla_len(tb[NL80211_ATTR_MAC]));
1507 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1508 }
1509 if (tb[NL80211_ATTR_KEY_SEQ]) {
1510 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1511 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1512 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1513 }
1514 if (tb[NL80211_ATTR_KEY_TYPE]) {
1515 enum nl80211_key_type key_type =
1516 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1517 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1518 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1519 data.michael_mic_failure.unicast = 1;
1520 } else
1521 data.michael_mic_failure.unicast = 1;
1522
1523 if (tb[NL80211_ATTR_KEY_IDX]) {
1524 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1525 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1526 }
1527
1528 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1529 }
1530
1531
1532 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1533 struct nlattr *tb[])
1534 {
1535 if (tb[NL80211_ATTR_MAC] == NULL) {
1536 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1537 "event");
1538 return;
1539 }
1540 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1541 drv->associated = 1;
1542 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1543 MAC2STR(drv->bssid));
1544
1545 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1546 }
1547
1548
1549 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1550 int cancel_event, struct nlattr *tb[])
1551 {
1552 unsigned int freq, chan_type, duration;
1553 union wpa_event_data data;
1554 u64 cookie;
1555
1556 if (tb[NL80211_ATTR_WIPHY_FREQ])
1557 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1558 else
1559 freq = 0;
1560
1561 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1562 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1563 else
1564 chan_type = 0;
1565
1566 if (tb[NL80211_ATTR_DURATION])
1567 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1568 else
1569 duration = 0;
1570
1571 if (tb[NL80211_ATTR_COOKIE])
1572 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1573 else
1574 cookie = 0;
1575
1576 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1577 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1578 cancel_event, freq, chan_type, duration,
1579 (long long unsigned int) cookie,
1580 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1581
1582 if (cookie != drv->remain_on_chan_cookie)
1583 return; /* not for us */
1584
1585 if (cancel_event)
1586 drv->pending_remain_on_chan = 0;
1587
1588 os_memset(&data, 0, sizeof(data));
1589 data.remain_on_channel.freq = freq;
1590 data.remain_on_channel.duration = duration;
1591 wpa_supplicant_event(drv->ctx, cancel_event ?
1592 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1593 EVENT_REMAIN_ON_CHANNEL, &data);
1594 }
1595
1596
1597 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1598 struct nlattr *tb[])
1599 {
1600 union wpa_event_data event;
1601 struct nlattr *nl;
1602 int rem;
1603 struct scan_info *info;
1604 #define MAX_REPORT_FREQS 50
1605 int freqs[MAX_REPORT_FREQS];
1606 int num_freqs = 0;
1607
1608 if (drv->scan_for_auth) {
1609 drv->scan_for_auth = 0;
1610 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1611 "cfg80211 BSS entry");
1612 wpa_driver_nl80211_authenticate_retry(drv);
1613 return;
1614 }
1615
1616 os_memset(&event, 0, sizeof(event));
1617 info = &event.scan_info;
1618 info->aborted = aborted;
1619
1620 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1621 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1622 struct wpa_driver_scan_ssid *s =
1623 &info->ssids[info->num_ssids];
1624 s->ssid = nla_data(nl);
1625 s->ssid_len = nla_len(nl);
1626 info->num_ssids++;
1627 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1628 break;
1629 }
1630 }
1631 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1632 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1633 {
1634 freqs[num_freqs] = nla_get_u32(nl);
1635 num_freqs++;
1636 if (num_freqs == MAX_REPORT_FREQS - 1)
1637 break;
1638 }
1639 info->freqs = freqs;
1640 info->num_freqs = num_freqs;
1641 }
1642 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1643 }
1644
1645
1646 static int get_link_signal(struct nl_msg *msg, void *arg)
1647 {
1648 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1649 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1650 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1651 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1652 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1653 };
1654 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1655 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1656 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1657 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1658 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1659 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1660 };
1661 struct wpa_signal_info *sig_change = arg;
1662
1663 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1664 genlmsg_attrlen(gnlh, 0), NULL);
1665 if (!tb[NL80211_ATTR_STA_INFO] ||
1666 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1667 tb[NL80211_ATTR_STA_INFO], policy))
1668 return NL_SKIP;
1669 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1670 return NL_SKIP;
1671
1672 sig_change->current_signal =
1673 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1674
1675 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1676 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1677 sinfo[NL80211_STA_INFO_TX_BITRATE],
1678 rate_policy)) {
1679 sig_change->current_txrate = 0;
1680 } else {
1681 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1682 sig_change->current_txrate =
1683 nla_get_u16(rinfo[
1684 NL80211_RATE_INFO_BITRATE]) * 100;
1685 }
1686 }
1687 }
1688
1689 return NL_SKIP;
1690 }
1691
1692
1693 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1694 struct wpa_signal_info *sig)
1695 {
1696 struct nl_msg *msg;
1697
1698 sig->current_signal = -9999;
1699 sig->current_txrate = 0;
1700
1701 msg = nlmsg_alloc();
1702 if (!msg)
1703 return -ENOMEM;
1704
1705 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1706
1707 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1708 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1709
1710 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1711 nla_put_failure:
1712 nlmsg_free(msg);
1713 return -ENOBUFS;
1714 }
1715
1716
1717 static int get_link_noise(struct nl_msg *msg, void *arg)
1718 {
1719 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1720 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1721 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1722 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1723 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1724 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1725 };
1726 struct wpa_signal_info *sig_change = arg;
1727
1728 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1729 genlmsg_attrlen(gnlh, 0), NULL);
1730
1731 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1732 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1733 return NL_SKIP;
1734 }
1735
1736 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1737 tb[NL80211_ATTR_SURVEY_INFO],
1738 survey_policy)) {
1739 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1740 "attributes!");
1741 return NL_SKIP;
1742 }
1743
1744 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1745 return NL_SKIP;
1746
1747 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1748 sig_change->frequency)
1749 return NL_SKIP;
1750
1751 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1752 return NL_SKIP;
1753
1754 sig_change->current_noise =
1755 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1756
1757 return NL_SKIP;
1758 }
1759
1760
1761 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1762 struct wpa_signal_info *sig_change)
1763 {
1764 struct nl_msg *msg;
1765
1766 sig_change->current_noise = 9999;
1767 sig_change->frequency = drv->assoc_freq;
1768
1769 msg = nlmsg_alloc();
1770 if (!msg)
1771 return -ENOMEM;
1772
1773 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1774
1775 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1776
1777 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1778 nla_put_failure:
1779 nlmsg_free(msg);
1780 return -ENOBUFS;
1781 }
1782
1783
1784 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1785 {
1786 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1787 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1788 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1789 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1790 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1791 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1792 };
1793 struct wpa_scan_results *scan_results = arg;
1794 struct wpa_scan_res *scan_res;
1795 size_t i;
1796
1797 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1798 genlmsg_attrlen(gnlh, 0), NULL);
1799
1800 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1801 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1802 return NL_SKIP;
1803 }
1804
1805 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1806 tb[NL80211_ATTR_SURVEY_INFO],
1807 survey_policy)) {
1808 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1809 "attributes");
1810 return NL_SKIP;
1811 }
1812
1813 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1814 return NL_SKIP;
1815
1816 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1817 return NL_SKIP;
1818
1819 for (i = 0; i < scan_results->num; ++i) {
1820 scan_res = scan_results->res[i];
1821 if (!scan_res)
1822 continue;
1823 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1824 scan_res->freq)
1825 continue;
1826 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1827 continue;
1828 scan_res->noise = (s8)
1829 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1830 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1831 }
1832
1833 return NL_SKIP;
1834 }
1835
1836
1837 static int nl80211_get_noise_for_scan_results(
1838 struct wpa_driver_nl80211_data *drv,
1839 struct wpa_scan_results *scan_res)
1840 {
1841 struct nl_msg *msg;
1842
1843 msg = nlmsg_alloc();
1844 if (!msg)
1845 return -ENOMEM;
1846
1847 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1848
1849 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1850
1851 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1852 scan_res);
1853 nla_put_failure:
1854 nlmsg_free(msg);
1855 return -ENOBUFS;
1856 }
1857
1858
1859 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1860 struct nlattr *tb[])
1861 {
1862 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1863 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1864 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1865 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1866 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1867 };
1868 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1869 enum nl80211_cqm_rssi_threshold_event event;
1870 union wpa_event_data ed;
1871 struct wpa_signal_info sig;
1872 int res;
1873
1874 if (tb[NL80211_ATTR_CQM] == NULL ||
1875 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1876 cqm_policy)) {
1877 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1878 return;
1879 }
1880
1881 os_memset(&ed, 0, sizeof(ed));
1882
1883 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1884 if (!tb[NL80211_ATTR_MAC])
1885 return;
1886 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1887 ETH_ALEN);
1888 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1889 return;
1890 }
1891
1892 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1893 return;
1894 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1895
1896 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1897 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1898 "event: RSSI high");
1899 ed.signal_change.above_threshold = 1;
1900 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1901 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1902 "event: RSSI low");
1903 ed.signal_change.above_threshold = 0;
1904 } else
1905 return;
1906
1907 res = nl80211_get_link_signal(drv, &sig);
1908 if (res == 0) {
1909 ed.signal_change.current_signal = sig.current_signal;
1910 ed.signal_change.current_txrate = sig.current_txrate;
1911 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1912 sig.current_signal, sig.current_txrate);
1913 }
1914
1915 res = nl80211_get_link_noise(drv, &sig);
1916 if (res == 0) {
1917 ed.signal_change.current_noise = sig.current_noise;
1918 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1919 sig.current_noise);
1920 }
1921
1922 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1923 }
1924
1925
1926 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1927 struct nlattr **tb)
1928 {
1929 u8 *addr;
1930 union wpa_event_data data;
1931
1932 if (tb[NL80211_ATTR_MAC] == NULL)
1933 return;
1934 addr = nla_data(tb[NL80211_ATTR_MAC]);
1935 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1936
1937 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1938 u8 *ies = NULL;
1939 size_t ies_len = 0;
1940 if (tb[NL80211_ATTR_IE]) {
1941 ies = nla_data(tb[NL80211_ATTR_IE]);
1942 ies_len = nla_len(tb[NL80211_ATTR_IE]);
1943 }
1944 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1945 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1946 return;
1947 }
1948
1949 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1950 return;
1951
1952 os_memset(&data, 0, sizeof(data));
1953 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1954 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1955 }
1956
1957
1958 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1959 struct nlattr **tb)
1960 {
1961 u8 *addr;
1962 union wpa_event_data data;
1963
1964 if (tb[NL80211_ATTR_MAC] == NULL)
1965 return;
1966 addr = nla_data(tb[NL80211_ATTR_MAC]);
1967 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1968 MAC2STR(addr));
1969
1970 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1971 drv_event_disassoc(drv->ctx, addr);
1972 return;
1973 }
1974
1975 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1976 return;
1977
1978 os_memset(&data, 0, sizeof(data));
1979 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1980 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1981 }
1982
1983
1984 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1985 struct nlattr **tb)
1986 {
1987 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1988 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1989 [NL80211_REKEY_DATA_KEK] = {
1990 .minlen = NL80211_KEK_LEN,
1991 .maxlen = NL80211_KEK_LEN,
1992 },
1993 [NL80211_REKEY_DATA_KCK] = {
1994 .minlen = NL80211_KCK_LEN,
1995 .maxlen = NL80211_KCK_LEN,
1996 },
1997 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1998 .minlen = NL80211_REPLAY_CTR_LEN,
1999 .maxlen = NL80211_REPLAY_CTR_LEN,
2000 },
2001 };
2002 union wpa_event_data data;
2003
2004 if (!tb[NL80211_ATTR_MAC])
2005 return;
2006 if (!tb[NL80211_ATTR_REKEY_DATA])
2007 return;
2008 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
2009 tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
2010 return;
2011 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
2012 return;
2013
2014 os_memset(&data, 0, sizeof(data));
2015 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
2016 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
2017 MAC2STR(data.driver_gtk_rekey.bssid));
2018 data.driver_gtk_rekey.replay_ctr =
2019 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
2020 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
2021 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
2022 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
2023 }
2024
2025
2026 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
2027 struct nlattr **tb)
2028 {
2029 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
2030 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
2031 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
2032 [NL80211_PMKSA_CANDIDATE_BSSID] = {
2033 .minlen = ETH_ALEN,
2034 .maxlen = ETH_ALEN,
2035 },
2036 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
2037 };
2038 union wpa_event_data data;
2039
2040 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
2041 return;
2042 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
2043 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
2044 return;
2045 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
2046 !cand[NL80211_PMKSA_CANDIDATE_BSSID])
2047 return;
2048
2049 os_memset(&data, 0, sizeof(data));
2050 os_memcpy(data.pmkid_candidate.bssid,
2051 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2052 data.pmkid_candidate.index =
2053 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2054 data.pmkid_candidate.preauth =
2055 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2056 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2057 }
2058
2059
2060 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2061 struct nlattr **tb)
2062 {
2063 union wpa_event_data data;
2064
2065 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2066 return;
2067
2068 os_memset(&data, 0, sizeof(data));
2069 os_memcpy(data.client_poll.addr,
2070 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2071
2072 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2073 }
2074
2075
2076 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2077 int wds)
2078 {
2079 struct wpa_driver_nl80211_data *drv = bss->drv;
2080 union wpa_event_data event;
2081
2082 if (!tb[NL80211_ATTR_MAC])
2083 return;
2084
2085 os_memset(&event, 0, sizeof(event));
2086 event.rx_from_unknown.bssid = bss->addr;
2087 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2088 event.rx_from_unknown.wds = wds;
2089
2090 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2091 }
2092
2093
2094 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
2095 int cmd, struct nlattr **tb)
2096 {
2097 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2098 (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2099 cmd == NL80211_CMD_SCAN_ABORTED)) {
2100 wpa_driver_nl80211_set_mode(&drv->first_bss,
2101 drv->ap_scan_as_station);
2102 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2103 }
2104
2105 switch (cmd) {
2106 case NL80211_CMD_TRIGGER_SCAN:
2107 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
2108 break;
2109 case NL80211_CMD_START_SCHED_SCAN:
2110 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
2111 break;
2112 case NL80211_CMD_SCHED_SCAN_STOPPED:
2113 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
2114 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2115 break;
2116 case NL80211_CMD_NEW_SCAN_RESULTS:
2117 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
2118 drv->scan_complete_events = 1;
2119 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2120 drv->ctx);
2121 send_scan_event(drv, 0, tb);
2122 break;
2123 case NL80211_CMD_SCHED_SCAN_RESULTS:
2124 wpa_printf(MSG_DEBUG,
2125 "nl80211: New sched scan results available");
2126 send_scan_event(drv, 0, tb);
2127 break;
2128 case NL80211_CMD_SCAN_ABORTED:
2129 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
2130 /*
2131 * Need to indicate that scan results are available in order
2132 * not to make wpa_supplicant stop its scanning.
2133 */
2134 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2135 drv->ctx);
2136 send_scan_event(drv, 1, tb);
2137 break;
2138 case NL80211_CMD_AUTHENTICATE:
2139 case NL80211_CMD_ASSOCIATE:
2140 case NL80211_CMD_DEAUTHENTICATE:
2141 case NL80211_CMD_DISASSOCIATE:
2142 case NL80211_CMD_FRAME_TX_STATUS:
2143 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2144 case NL80211_CMD_UNPROT_DISASSOCIATE:
2145 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME],
2146 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2147 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2148 tb[NL80211_ATTR_COOKIE],
2149 tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2150 break;
2151 case NL80211_CMD_CONNECT:
2152 case NL80211_CMD_ROAM:
2153 mlme_event_connect(drv, cmd,
2154 tb[NL80211_ATTR_STATUS_CODE],
2155 tb[NL80211_ATTR_MAC],
2156 tb[NL80211_ATTR_REQ_IE],
2157 tb[NL80211_ATTR_RESP_IE]);
2158 break;
2159 case NL80211_CMD_CH_SWITCH_NOTIFY:
2160 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ],
2161 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2162 break;
2163 case NL80211_CMD_DISCONNECT:
2164 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2165 tb[NL80211_ATTR_MAC],
2166 tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2167 break;
2168 case NL80211_CMD_MICHAEL_MIC_FAILURE:
2169 mlme_event_michael_mic_failure(drv, tb);
2170 break;
2171 case NL80211_CMD_JOIN_IBSS:
2172 mlme_event_join_ibss(drv, tb);
2173 break;
2174 case NL80211_CMD_REMAIN_ON_CHANNEL:
2175 mlme_event_remain_on_channel(drv, 0, tb);
2176 break;
2177 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2178 mlme_event_remain_on_channel(drv, 1, tb);
2179 break;
2180 case NL80211_CMD_NOTIFY_CQM:
2181 nl80211_cqm_event(drv, tb);
2182 break;
2183 case NL80211_CMD_REG_CHANGE:
2184 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2185 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2186 NULL);
2187 break;
2188 case NL80211_CMD_REG_BEACON_HINT:
2189 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2190 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2191 NULL);
2192 break;
2193 case NL80211_CMD_NEW_STATION:
2194 nl80211_new_station_event(drv, tb);
2195 break;
2196 case NL80211_CMD_DEL_STATION:
2197 nl80211_del_station_event(drv, tb);
2198 break;
2199 case NL80211_CMD_SET_REKEY_OFFLOAD:
2200 nl80211_rekey_offload_event(drv, tb);
2201 break;
2202 case NL80211_CMD_PMKSA_CANDIDATE:
2203 nl80211_pmksa_candidate_event(drv, tb);
2204 break;
2205 case NL80211_CMD_PROBE_CLIENT:
2206 nl80211_client_probe_event(drv, tb);
2207 break;
2208 default:
2209 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2210 "(cmd=%d)", cmd);
2211 break;
2212 }
2213 }
2214
2215
2216 static int process_drv_event(struct nl_msg *msg, void *arg)
2217 {
2218 struct wpa_driver_nl80211_data *drv = arg;
2219 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2220 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2221
2222 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2223 genlmsg_attrlen(gnlh, 0), NULL);
2224
2225 if (tb[NL80211_ATTR_IFINDEX]) {
2226 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2227 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
2228 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
2229 " for foreign interface (ifindex %d)",
2230 gnlh->cmd, ifindex);
2231 return NL_SKIP;
2232 }
2233 }
2234
2235 do_process_drv_event(drv, gnlh->cmd, tb);
2236 return NL_SKIP;
2237 }
2238
2239
2240 static int process_global_event(struct nl_msg *msg, void *arg)
2241 {
2242 struct nl80211_global *global = arg;
2243 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2244 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2245 struct wpa_driver_nl80211_data *drv, *tmp;
2246 int ifidx = -1;
2247
2248 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2249 genlmsg_attrlen(gnlh, 0), NULL);
2250
2251 if (tb[NL80211_ATTR_IFINDEX])
2252 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2253
2254 dl_list_for_each_safe(drv, tmp, &global->interfaces,
2255 struct wpa_driver_nl80211_data, list) {
2256 if (ifidx == -1 || ifidx == drv->ifindex ||
2257 have_ifidx(drv, ifidx))
2258 do_process_drv_event(drv, gnlh->cmd, tb);
2259 }
2260
2261 return NL_SKIP;
2262 }
2263
2264
2265 static int process_bss_event(struct nl_msg *msg, void *arg)
2266 {
2267 struct i802_bss *bss = arg;
2268 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2269 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2270
2271 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2272 genlmsg_attrlen(gnlh, 0), NULL);
2273
2274 switch (gnlh->cmd) {
2275 case NL80211_CMD_FRAME:
2276 case NL80211_CMD_FRAME_TX_STATUS:
2277 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2278 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2279 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2280 tb[NL80211_ATTR_COOKIE],
2281 tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2282 break;
2283 case NL80211_CMD_UNEXPECTED_FRAME:
2284 nl80211_spurious_frame(bss, tb, 0);
2285 break;
2286 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2287 nl80211_spurious_frame(bss, tb, 1);
2288 break;
2289 default:
2290 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2291 "(cmd=%d)", gnlh->cmd);
2292 break;
2293 }
2294
2295 return NL_SKIP;
2296 }
2297
2298
2299 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2300 void *handle)
2301 {
2302 struct nl_cb *cb = eloop_ctx;
2303
2304 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
2305
2306 nl_recvmsgs(handle, cb);
2307 }
2308
2309
2310 /**
2311 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2312 * @priv: driver_nl80211 private data
2313 * @alpha2_arg: country to which to switch to
2314 * Returns: 0 on success, -1 on failure
2315 *
2316 * This asks nl80211 to set the regulatory domain for given
2317 * country ISO / IEC alpha2.
2318 */
2319 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2320 {
2321 struct i802_bss *bss = priv;
2322 struct wpa_driver_nl80211_data *drv = bss->drv;
2323 char alpha2[3];
2324 struct nl_msg *msg;
2325
2326 msg = nlmsg_alloc();
2327 if (!msg)
2328 return -ENOMEM;
2329
2330 alpha2[0] = alpha2_arg[0];
2331 alpha2[1] = alpha2_arg[1];
2332 alpha2[2] = '\0';
2333
2334 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2335
2336 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2337 if (send_and_recv_msgs(drv, msg, NULL, NULL))
2338 return -EINVAL;
2339 return 0;
2340 nla_put_failure:
2341 nlmsg_free(msg);
2342 return -EINVAL;
2343 }
2344
2345
2346 struct wiphy_info_data {
2347 struct wpa_driver_capa *capa;
2348
2349 unsigned int error:1;
2350 unsigned int device_ap_sme:1;
2351 unsigned int poll_command_supported:1;
2352 unsigned int data_tx_status:1;
2353 unsigned int monitor_supported:1;
2354 };
2355
2356
2357 static unsigned int probe_resp_offload_support(int supp_protocols)
2358 {
2359 unsigned int prot = 0;
2360
2361 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
2362 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
2363 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
2364 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
2365 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
2366 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
2367 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
2368 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
2369
2370 return prot;
2371 }
2372
2373
2374 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2375 {
2376 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2377 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2378 struct wiphy_info_data *info = arg;
2379 int p2p_go_supported = 0, p2p_client_supported = 0;
2380 int p2p_concurrent = 0;
2381 int auth_supported = 0, connect_supported = 0;
2382 struct wpa_driver_capa *capa = info->capa;
2383 static struct nla_policy
2384 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2385 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2386 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2387 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2388 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2389 },
2390 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2391 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2392 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2393 };
2394
2395 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2396 genlmsg_attrlen(gnlh, 0), NULL);
2397
2398 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
2399 capa->max_scan_ssids =
2400 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
2401
2402 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
2403 capa->max_sched_scan_ssids =
2404 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
2405
2406 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
2407 capa->max_match_sets =
2408 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
2409
2410 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
2411 struct nlattr *nl_mode;
2412 int i;
2413 nla_for_each_nested(nl_mode,
2414 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
2415 switch (nla_type(nl_mode)) {
2416 case NL80211_IFTYPE_AP:
2417 capa->flags |= WPA_DRIVER_FLAGS_AP;
2418 break;
2419 case NL80211_IFTYPE_P2P_GO:
2420 p2p_go_supported = 1;
2421 break;
2422 case NL80211_IFTYPE_P2P_CLIENT:
2423 p2p_client_supported = 1;
2424 break;
2425 case NL80211_IFTYPE_MONITOR:
2426 info->monitor_supported = 1;
2427 break;
2428 }
2429 }
2430 }
2431
2432 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
2433 struct nlattr *nl_combi;
2434 int rem_combi;
2435
2436 nla_for_each_nested(nl_combi,
2437 tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
2438 rem_combi) {
2439 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2440 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2441 struct nlattr *nl_limit, *nl_mode;
2442 int err, rem_limit, rem_mode;
2443 int combination_has_p2p = 0, combination_has_mgd = 0;
2444
2445 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2446 nl_combi,
2447 iface_combination_policy);
2448 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2449 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2450 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2451 goto broken_combination;
2452
2453 nla_for_each_nested(nl_limit,
2454 tb_comb[NL80211_IFACE_COMB_LIMITS],
2455 rem_limit) {
2456 err = nla_parse_nested(tb_limit,
2457 MAX_NL80211_IFACE_LIMIT,
2458 nl_limit,
2459 iface_limit_policy);
2460 if (err ||
2461 !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2462 goto broken_combination;
2463
2464 nla_for_each_nested(
2465 nl_mode,
2466 tb_limit[NL80211_IFACE_LIMIT_TYPES],
2467 rem_mode) {
2468 int ift = nla_type(nl_mode);
2469 if (ift == NL80211_IFTYPE_P2P_GO ||
2470 ift == NL80211_IFTYPE_P2P_CLIENT)
2471 combination_has_p2p = 1;
2472 if (ift == NL80211_IFTYPE_STATION)
2473 combination_has_mgd = 1;
2474 }
2475 if (combination_has_p2p && combination_has_mgd)
2476 break;
2477 }
2478
2479 if (combination_has_p2p && combination_has_mgd) {
2480 p2p_concurrent = 1;
2481 break;
2482 }
2483
2484 broken_combination:
2485 ;
2486 }
2487 }
2488
2489 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
2490 struct nlattr *nl_cmd;
2491 int i;
2492
2493 nla_for_each_nested(nl_cmd,
2494 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2495 switch (nla_get_u32(nl_cmd)) {
2496 case NL80211_CMD_AUTHENTICATE:
2497 auth_supported = 1;
2498 break;
2499 case NL80211_CMD_CONNECT:
2500 connect_supported = 1;
2501 break;
2502 case NL80211_CMD_START_SCHED_SCAN:
2503 capa->sched_scan_supported = 1;
2504 break;
2505 case NL80211_CMD_PROBE_CLIENT:
2506 info->poll_command_supported = 1;
2507 break;
2508 }
2509 }
2510 }
2511
2512 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2513 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2514 "off-channel TX");
2515 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2516 }
2517
2518 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2519 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2520 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2521 }
2522
2523 /* default to 5000 since early versions of mac80211 don't set it */
2524 capa->max_remain_on_chan = 5000;
2525
2526 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
2527 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
2528
2529 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2530 capa->max_remain_on_chan =
2531 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2532
2533 if (auth_supported)
2534 capa->flags |= WPA_DRIVER_FLAGS_SME;
2535 else if (!connect_supported) {
2536 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2537 "authentication/association or connect commands");
2538 info->error = 1;
2539 }
2540
2541 if (p2p_go_supported && p2p_client_supported)
2542 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2543 if (p2p_concurrent) {
2544 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2545 "interface (driver advertised support)");
2546 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2547 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2548 }
2549
2550 if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2551 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2552 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2553
2554 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2555 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2556 capa->flags |=
2557 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2558 }
2559 }
2560
2561 if (tb[NL80211_ATTR_DEVICE_AP_SME])
2562 info->device_ap_sme = 1;
2563
2564 if (tb[NL80211_ATTR_FEATURE_FLAGS]) {
2565 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]);
2566
2567 if (flags & NL80211_FEATURE_SK_TX_STATUS)
2568 info->data_tx_status = 1;
2569
2570 if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
2571 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
2572 }
2573
2574 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) {
2575 int protocols =
2576 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
2577 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response "
2578 "offload in AP mode");
2579 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
2580 capa->probe_resp_offloads =
2581 probe_resp_offload_support(protocols);
2582 }
2583
2584 return NL_SKIP;
2585 }
2586
2587
2588 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2589 struct wiphy_info_data *info)
2590 {
2591 struct nl_msg *msg;
2592
2593 os_memset(info, 0, sizeof(*info));
2594 info->capa = &drv->capa;
2595
2596 msg = nlmsg_alloc();
2597 if (!msg)
2598 return -1;
2599
2600 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2601
2602 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2603
2604 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2605 return 0;
2606 msg = NULL;
2607 nla_put_failure:
2608 nlmsg_free(msg);
2609 return -1;
2610 }
2611
2612
2613 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2614 {
2615 struct wiphy_info_data info;
2616 if (wpa_driver_nl80211_get_info(drv, &info))
2617 return -1;
2618
2619 if (info.error)
2620 return -1;
2621
2622 drv->has_capability = 1;
2623 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2624 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2625 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2626 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2627 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2628 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2629 WPA_DRIVER_CAPA_ENC_WEP104 |
2630 WPA_DRIVER_CAPA_ENC_TKIP |
2631 WPA_DRIVER_CAPA_ENC_CCMP;
2632 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2633 WPA_DRIVER_AUTH_SHARED |
2634 WPA_DRIVER_AUTH_LEAP;
2635
2636 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2637 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2638 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2639
2640 if (!info.device_ap_sme) {
2641 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2642
2643 /*
2644 * No AP SME is currently assumed to also indicate no AP MLME
2645 * in the driver/firmware.
2646 */
2647 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
2648 }
2649
2650 drv->device_ap_sme = info.device_ap_sme;
2651 drv->poll_command_supported = info.poll_command_supported;
2652 drv->data_tx_status = info.data_tx_status;
2653
2654 /*
2655 * If poll command is supported mac80211 is new enough to
2656 * have everything we need to not need monitor interfaces.
2657 */
2658 drv->use_monitor = !info.poll_command_supported;
2659
2660 if (drv->device_ap_sme && drv->use_monitor) {
2661 /*
2662 * Non-mac80211 drivers may not support monitor interface.
2663 * Make sure we do not get stuck with incorrect capability here
2664 * by explicitly testing this.
2665 */
2666 if (!info.monitor_supported) {
2667 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
2668 "with device_ap_sme since no monitor mode "
2669 "support detected");
2670 drv->use_monitor = 0;
2671 }
2672 }
2673
2674 /*
2675 * If we aren't going to use monitor interfaces, but the
2676 * driver doesn't support data TX status, we won't get TX
2677 * status for EAPOL frames.
2678 */
2679 if (!drv->use_monitor && !info.data_tx_status)
2680 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2681
2682 return 0;
2683 }
2684
2685
2686 #ifdef ANDROID
2687 static int android_genl_ctrl_resolve(struct nl_handle *handle,
2688 const char *name)
2689 {
2690 /*
2691 * Android ICS has very minimal genl_ctrl_resolve() implementation, so
2692 * need to work around that.
2693 */
2694 struct nl_cache *cache = NULL;
2695 struct genl_family *nl80211 = NULL;
2696 int id = -1;
2697
2698 if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
2699 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
2700 "netlink cache");
2701 goto fail;
2702 }
2703
2704 nl80211 = genl_ctrl_search_by_name(cache, name);
2705 if (nl80211 == NULL)
2706 goto fail;
2707
2708 id = genl_family_get_id(nl80211);
2709
2710 fail:
2711 if (nl80211)
2712 genl_family_put(nl80211);
2713 if (cache)
2714 nl_cache_free(cache);
2715
2716 return id;
2717 }
2718 #define genl_ctrl_resolve android_genl_ctrl_resolve
2719 #endif /* ANDROID */
2720
2721
2722 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2723 {
2724 int ret;
2725
2726 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2727 if (global->nl_cb == NULL) {
2728 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2729 "callbacks");
2730 return -1;
2731 }
2732
2733 global->nl = nl_create_handle(global->nl_cb, "nl");
2734 if (global->nl == NULL)
2735 goto err;
2736
2737 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
2738 if (global->nl80211_id < 0) {
2739 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2740 "found");
2741 goto err;
2742 }
2743
2744 global->nl_event = nl_create_handle(global->nl_cb, "event");
2745 if (global->nl_event == NULL)
2746 goto err;
2747
2748 ret = nl_get_multicast_id(global, "nl80211", "scan");
2749 if (ret >= 0)
2750 ret = nl_socket_add_membership(global->nl_event, ret);
2751 if (ret < 0) {
2752 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2753 "membership for scan events: %d (%s)",
2754 ret, strerror(-ret));
2755 goto err;
2756 }
2757
2758 ret = nl_get_multicast_id(global, "nl80211", "mlme");
2759 if (ret >= 0)
2760 ret = nl_socket_add_membership(global->nl_event, ret);
2761 if (ret < 0) {
2762 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2763 "membership for mlme events: %d (%s)",
2764 ret, strerror(-ret));
2765 goto err;
2766 }
2767
2768 ret = nl_get_multicast_id(global, "nl80211", "regulatory");
2769 if (ret >= 0)
2770 ret = nl_socket_add_membership(global->nl_event, ret);
2771 if (ret < 0) {
2772 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2773 "membership for regulatory events: %d (%s)",
2774 ret, strerror(-ret));
2775 /* Continue without regulatory events */
2776 }
2777
2778 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2779 no_seq_check, NULL);
2780 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2781 process_global_event, global);
2782
2783 eloop_register_read_sock(nl_socket_get_fd(global->nl_event),
2784 wpa_driver_nl80211_event_receive,
2785 global->nl_cb, global->nl_event);
2786
2787 return 0;
2788
2789 err:
2790 nl_destroy_handles(&global->nl_event);
2791 nl_destroy_handles(&global->nl);
2792 nl_cb_put(global->nl_cb);
2793 global->nl_cb = NULL;
2794 return -1;
2795 }
2796
2797
2798 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2799 {
2800 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2801 if (!drv->nl_cb) {
2802 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
2803 return -1;
2804 }
2805
2806 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2807 no_seq_check, NULL);
2808 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2809 process_drv_event, drv);
2810
2811 return 0;
2812 }
2813
2814
2815 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2816 {
2817 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2818 /*
2819 * This may be for any interface; use ifdown event to disable
2820 * interface.
2821 */
2822 }
2823
2824
2825 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2826 {
2827 struct wpa_driver_nl80211_data *drv = ctx;
2828 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2829 if (linux_set_iface_flags(drv->global->ioctl_sock,
2830 drv->first_bss.ifname, 1)) {
2831 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2832 "after rfkill unblock");
2833 return;
2834 }
2835 /* rtnetlink ifup handler will report interface as enabled */
2836 }
2837
2838
2839 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2840 {
2841 /* Find phy (radio) to which this interface belongs */
2842 char buf[90], *pos;
2843 int f, rv;
2844
2845 drv->phyname[0] = '\0';
2846 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2847 drv->first_bss.ifname);
2848 f = open(buf, O_RDONLY);
2849 if (f < 0) {
2850 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2851 buf, strerror(errno));
2852 return;
2853 }
2854
2855 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2856 close(f);
2857 if (rv < 0) {
2858 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2859 buf, strerror(errno));
2860 return;
2861 }
2862
2863 drv->phyname[rv] = '\0';
2864 pos = os_strchr(drv->phyname, '\n');
2865 if (pos)
2866 *pos = '\0';
2867 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2868 drv->first_bss.ifname, drv->phyname);
2869 }
2870
2871
2872 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
2873 void *eloop_ctx,
2874 void *handle)
2875 {
2876 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2877 u8 data[2048];
2878 struct msghdr msg;
2879 struct iovec entry;
2880 u8 control[512];
2881 struct cmsghdr *cmsg;
2882 int res, found_ee = 0, found_wifi = 0, acked = 0;
2883 union wpa_event_data event;
2884
2885 memset(&msg, 0, sizeof(msg));
2886 msg.msg_iov = &entry;
2887 msg.msg_iovlen = 1;
2888 entry.iov_base = data;
2889 entry.iov_len = sizeof(data);
2890 msg.msg_control = &control;
2891 msg.msg_controllen = sizeof(control);
2892
2893 res = recvmsg(sock, &msg, MSG_ERRQUEUE);
2894 /* if error or not fitting 802.3 header, return */
2895 if (res < 14)
2896 return;
2897
2898 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
2899 {
2900 if (cmsg->cmsg_level == SOL_SOCKET &&
2901 cmsg->cmsg_type == SCM_WIFI_STATUS) {
2902 int *ack;
2903
2904 found_wifi = 1;
2905 ack = (void *)CMSG_DATA(cmsg);
2906 acked = *ack;
2907 }
2908
2909 if (cmsg->cmsg_level == SOL_PACKET &&
2910 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
2911 struct sock_extended_err *err =
2912 (struct sock_extended_err *)CMSG_DATA(cmsg);
2913
2914 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
2915 found_ee = 1;
2916 }
2917 }
2918
2919 if (!found_ee || !found_wifi)
2920 return;
2921
2922 memset(&event, 0, sizeof(event));
2923 event.eapol_tx_status.dst = data;
2924 event.eapol_tx_status.data = data + 14;
2925 event.eapol_tx_status.data_len = res - 14;
2926 event.eapol_tx_status.ack = acked;
2927 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
2928 }
2929
2930
2931 static int nl80211_init_bss(struct i802_bss *bss)
2932 {
2933 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2934 if (!bss->nl_cb)
2935 return -1;
2936
2937 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2938 no_seq_check, NULL);
2939 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2940 process_bss_event, bss);
2941
2942 return 0;
2943 }
2944
2945
2946 static void nl80211_destroy_bss(struct i802_bss *bss)
2947 {
2948 nl_cb_put(bss->nl_cb);
2949 bss->nl_cb = NULL;
2950 }
2951
2952
2953 /**
2954 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2955 * @ctx: context to be used when calling wpa_supplicant functions,
2956 * e.g., wpa_supplicant_event()
2957 * @ifname: interface name, e.g., wlan0
2958 * @global_priv: private driver global data from global_init()
2959 * Returns: Pointer to private data, %NULL on failure
2960 */
2961 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2962 void *global_priv)
2963 {
2964 struct wpa_driver_nl80211_data *drv;
2965 struct rfkill_config *rcfg;
2966 struct i802_bss *bss;
2967
2968 if (global_priv == NULL)
2969 return NULL;
2970 drv = os_zalloc(sizeof(*drv));
2971 if (drv == NULL)
2972 return NULL;
2973 drv->global = global_priv;
2974 drv->ctx = ctx;
2975 bss = &drv->first_bss;
2976 bss->drv = drv;
2977 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2978 drv->monitor_ifidx = -1;
2979 drv->monitor_sock = -1;
2980 drv->eapol_tx_sock = -1;
2981 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2982
2983 if (wpa_driver_nl80211_init_nl(drv)) {
2984 os_free(drv);
2985 return NULL;
2986 }
2987
2988 if (nl80211_init_bss(bss))
2989 goto failed;
2990
2991 nl80211_get_phy_name(drv);
2992
2993 rcfg = os_zalloc(sizeof(*rcfg));
2994 if (rcfg == NULL)
2995 goto failed;
2996 rcfg->ctx = drv;
2997 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2998 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2999 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
3000 drv->rfkill = rfkill_init(rcfg);
3001 if (drv->rfkill == NULL) {
3002 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
3003 os_free(rcfg);
3004 }
3005
3006 if (wpa_driver_nl80211_finish_drv_init(drv))
3007 goto failed;
3008
3009 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
3010 if (drv->eapol_tx_sock < 0)
3011 goto failed;
3012
3013 if (drv->data_tx_status) {
3014 int enabled = 1;
3015
3016 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
3017 &enabled, sizeof(enabled)) < 0) {
3018 wpa_printf(MSG_DEBUG,
3019 "nl80211: wifi status sockopt failed\n");
3020 drv->data_tx_status = 0;
3021 if (!drv->use_monitor)
3022 drv->capa.flags &=
3023 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3024 } else {
3025 eloop_register_read_sock(drv->eapol_tx_sock,
3026 wpa_driver_nl80211_handle_eapol_tx_status,
3027 drv, NULL);
3028 }
3029 }
3030
3031 if (drv->global) {
3032 dl_list_add(&drv->global->interfaces, &drv->list);
3033 drv->in_interface_list = 1;
3034 }
3035
3036 return bss;
3037
3038 failed:
3039 wpa_driver_nl80211_deinit(bss);
3040 return NULL;
3041 }
3042
3043
3044 static int nl80211_register_frame(struct i802_bss *bss,
3045 struct nl_handle *nl_handle,
3046 u16 type, const u8 *match, size_t match_len)
3047 {
3048 struct wpa_driver_nl80211_data *drv = bss->drv;
3049 struct nl_msg *msg;
3050 int ret = -1;
3051
3052 msg = nlmsg_alloc();
3053 if (!msg)
3054 return -1;
3055
3056 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p",
3057 type, nl_handle);
3058 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3059 match, match_len);
3060
3061 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
3062
3063 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3064 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
3065 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
3066
3067 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
3068 msg = NULL;
3069 if (ret) {
3070 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
3071 "failed (type=%u): ret=%d (%s)",
3072 type, ret, strerror(-ret));
3073 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3074 match, match_len);
3075 goto nla_put_failure;
3076 }
3077 ret = 0;
3078 nla_put_failure:
3079 nlmsg_free(msg);
3080 return ret;
3081 }
3082
3083
3084 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
3085 {
3086 struct wpa_driver_nl80211_data *drv = bss->drv;
3087
3088 if (bss->nl_mgmt) {
3089 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
3090 "already on! (nl_mgmt=%p)", bss->nl_mgmt);
3091 return -1;
3092 }
3093
3094 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
3095 if (bss->nl_mgmt == NULL)
3096 return -1;
3097
3098 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt),
3099 wpa_driver_nl80211_event_receive, bss->nl_cb,
3100 bss->nl_mgmt);
3101
3102 return 0;
3103 }
3104
3105
3106 static int nl80211_register_action_frame(struct i802_bss *bss,
3107 const u8 *match, size_t match_len)
3108 {
3109 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
3110 return nl80211_register_frame(bss, bss->nl_mgmt,
3111 type, match, match_len);
3112 }
3113
3114
3115 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
3116 {
3117 struct wpa_driver_nl80211_data *drv = bss->drv;
3118
3119 if (nl80211_alloc_mgmt_handle(bss))
3120 return -1;
3121 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
3122 "handle %p", bss->nl_mgmt);
3123
3124 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
3125 /* GAS Initial Request */
3126 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
3127 return -1;
3128 /* GAS Initial Response */
3129 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
3130 return -1;
3131 /* GAS Comeback Request */
3132 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
3133 return -1;
3134 /* GAS Comeback Response */
3135 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
3136 return -1;
3137 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
3138 #ifdef CONFIG_P2P
3139 /* P2P Public Action */
3140 if (nl80211_register_action_frame(bss,
3141 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
3142 6) < 0)
3143 return -1;
3144 /* P2P Action */
3145 if (nl80211_register_action_frame(bss,
3146 (u8 *) "\x7f\x50\x6f\x9a\x09",
3147 5) < 0)
3148 return -1;
3149 #endif /* CONFIG_P2P */
3150 #ifdef CONFIG_IEEE80211W
3151 /* SA Query Response */
3152 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
3153 return -1;
3154 #endif /* CONFIG_IEEE80211W */
3155 #ifdef CONFIG_TDLS
3156 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
3157 /* TDLS Discovery Response */
3158 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
3159 0)
3160 return -1;
3161 }
3162 #endif /* CONFIG_TDLS */
3163
3164 /* FT Action frames */
3165 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
3166 return -1;
3167 else
3168 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
3169 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
3170
3171 /* WNM - BSS Transition Management Request */
3172 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
3173 return -1;
3174
3175 return 0;
3176 }
3177
3178
3179 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3180 {
3181 struct wpa_driver_nl80211_data *drv = bss->drv;
3182 struct nl_msg *msg;
3183 int ret = -1;
3184
3185 msg = nlmsg_alloc();
3186 if (!msg)
3187 return -1;
3188
3189 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3190
3191 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3192
3193 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
3194 msg = NULL;
3195 if (ret) {
3196 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3197 "failed: ret=%d (%s)",
3198 ret, strerror(-ret));
3199 goto nla_put_failure;
3200 }
3201 ret = 0;
3202 nla_put_failure:
3203 nlmsg_free(msg);
3204 return ret;
3205 }
3206
3207
3208 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3209 {
3210 static const int stypes[] = {
3211 WLAN_FC_STYPE_AUTH,
3212 WLAN_FC_STYPE_ASSOC_REQ,
3213 WLAN_FC_STYPE_REASSOC_REQ,
3214 WLAN_FC_STYPE_DISASSOC,
3215 WLAN_FC_STYPE_DEAUTH,
3216 WLAN_FC_STYPE_ACTION,
3217 WLAN_FC_STYPE_PROBE_REQ,
3218 /* Beacon doesn't work as mac80211 doesn't currently allow
3219 * it, but it wouldn't really be the right thing anyway as
3220 * it isn't per interface ... maybe just dump the scan
3221 * results periodically for OLBC?
3222 */
3223 // WLAN_FC_STYPE_BEACON,
3224 };
3225 unsigned int i;
3226
3227 if (nl80211_alloc_mgmt_handle(bss))
3228 return -1;
3229 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3230 "handle %p", bss->nl_mgmt);
3231
3232 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3233 if (nl80211_register_frame(bss, bss->nl_mgmt,
3234 (WLAN_FC_TYPE_MGMT << 2) |
3235 (stypes[i] << 4),
3236 NULL, 0) < 0) {
3237 goto out_err;
3238 }
3239 }
3240
3241 if (nl80211_register_spurious_class3(bss))
3242 goto out_err;
3243
3244 if (nl80211_get_wiphy_data_ap(bss) == NULL)
3245 goto out_err;
3246
3247 return 0;
3248
3249 out_err:
3250 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3251 nl_destroy_handles(&bss->nl_mgmt);
3252 return -1;
3253 }
3254
3255
3256 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
3257 {
3258 if (nl80211_alloc_mgmt_handle(bss))
3259 return -1;
3260 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3261 "handle %p (device SME)", bss->nl_mgmt);
3262
3263 if (nl80211_register_frame(bss, bss->nl_mgmt,
3264 (WLAN_FC_TYPE_MGMT << 2) |
3265 (WLAN_FC_STYPE_ACTION << 4),
3266 NULL, 0) < 0)
3267 goto out_err;
3268
3269 return 0;
3270
3271 out_err:
3272 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3273 nl_destroy_handles(&bss->nl_mgmt);
3274 return -1;
3275 }
3276
3277
3278 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
3279 {
3280 if (bss->nl_mgmt == NULL)
3281 return;
3282 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
3283 "(%s)", bss->nl_mgmt, reason);
3284 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3285 nl_destroy_handles(&bss->nl_mgmt);
3286
3287 nl80211_put_wiphy_data_ap(bss);
3288 }
3289
3290
3291 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3292 {
3293 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3294 }
3295
3296
3297 static int
3298 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3299 {
3300 struct i802_bss *bss = &drv->first_bss;
3301 int send_rfkill_event = 0;
3302
3303 drv->ifindex = if_nametoindex(bss->ifname);
3304 drv->first_bss.ifindex = drv->ifindex;
3305
3306 #ifndef HOSTAPD
3307 /*
3308 * Make sure the interface starts up in station mode unless this is a
3309 * dynamically added interface (e.g., P2P) that was already configured
3310 * with proper iftype.
3311 */
3312 if (drv->ifindex != drv->global->if_add_ifindex &&
3313 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3314 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3315 "use managed mode");
3316 return -1;
3317 }
3318
3319 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3320 if (rfkill_is_blocked(drv->rfkill)) {
3321 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3322 "interface '%s' due to rfkill",
3323 bss->ifname);
3324 drv->if_disabled = 1;
3325 send_rfkill_event = 1;
3326 } else {
3327 wpa_printf(MSG_ERROR, "nl80211: Could not set "
3328 "interface '%s' UP", bss->ifname);
3329 return -1;
3330 }
3331 }
3332
3333 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3334 1, IF_OPER_DORMANT);
3335 #endif /* HOSTAPD */
3336
3337 if (wpa_driver_nl80211_capa(drv))
3338 return -1;
3339
3340 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3341 bss->addr))
3342 return -1;
3343
3344 if (send_rfkill_event) {
3345 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3346 drv, drv->ctx);
3347 }
3348
3349 return 0;
3350 }
3351
3352
3353 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3354 {
3355 struct nl_msg *msg;
3356
3357 msg = nlmsg_alloc();
3358 if (!msg)
3359 return -ENOMEM;
3360
3361 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3362 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3363
3364 return send_and_recv_msgs(drv, msg, NULL, NULL);
3365 nla_put_failure:
3366 nlmsg_free(msg);
3367 return -ENOBUFS;
3368 }
3369
3370
3371 /**
3372 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3373 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3374 *
3375 * Shut down driver interface and processing of driver events. Free
3376 * private data buffer if one was allocated in wpa_driver_nl80211_init().
3377 */
3378 static void wpa_driver_nl80211_deinit(void *priv)
3379 {
3380 struct i802_bss *bss = priv;
3381 struct wpa_driver_nl80211_data *drv = bss->drv;
3382
3383 bss->in_deinit = 1;
3384 if (drv->data_tx_status)
3385 eloop_unregister_read_sock(drv->eapol_tx_sock);
3386 if (drv->eapol_tx_sock >= 0)
3387 close(drv->eapol_tx_sock);
3388
3389 if (bss->nl_preq)
3390 wpa_driver_nl80211_probe_req_report(bss, 0);
3391 if (bss->added_if_into_bridge) {
3392 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3393 bss->ifname) < 0)
3394 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3395 "interface %s from bridge %s: %s",
3396 bss->ifname, bss->brname, strerror(errno));
3397 }
3398 if (bss->added_bridge) {
3399 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3400 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3401 "bridge %s: %s",
3402 bss->brname, strerror(errno));
3403 }
3404
3405 nl80211_remove_monitor_interface(drv);
3406
3407 if (is_ap_interface(drv->nlmode))
3408 wpa_driver_nl80211_del_beacon(drv);
3409
3410 #ifdef HOSTAPD
3411 if (drv->last_freq_ht) {
3412 /* Clear HT flags from the driver */
3413 struct hostapd_freq_params freq;
3414 os_memset(&freq, 0, sizeof(freq));
3415 freq.freq = drv->last_freq;
3416 i802_set_freq(priv, &freq);
3417 }
3418
3419 if (drv->eapol_sock >= 0) {
3420 eloop_unregister_read_sock(drv->eapol_sock);
3421 close(drv->eapol_sock);
3422 }
3423
3424 if (drv->if_indices != drv->default_if_indices)
3425 os_free(drv->if_indices);
3426 #endif /* HOSTAPD */
3427
3428 if (drv->disabled_11b_rates)
3429 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3430
3431 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3432 IF_OPER_UP);
3433 rfkill_deinit(drv->rfkill);
3434
3435 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3436
3437 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3438 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3439 nl80211_mgmt_unsubscribe(bss, "deinit");
3440
3441 nl_cb_put(drv->nl_cb);
3442
3443 nl80211_destroy_bss(&drv->first_bss);
3444
3445 os_free(drv->filter_ssids);
3446
3447 os_free(drv->auth_ie);
3448
3449 if (drv->in_interface_list)
3450 dl_list_del(&drv->list);
3451
3452 os_free(drv);
3453 }
3454
3455
3456 /**
3457 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3458 * @eloop_ctx: Driver private data
3459 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3460 *
3461 * This function can be used as registered timeout when starting a scan to
3462 * generate a scan completed event if the driver does not report this.
3463 */
3464 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3465 {
3466 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3467 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
3468 wpa_driver_nl80211_set_mode(&drv->first_bss,
3469 drv->ap_scan_as_station);
3470 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3471 }
3472 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
3473 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
3474 }
3475
3476
3477 static struct nl_msg *
3478 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
3479 struct wpa_driver_scan_params *params)
3480 {
3481 struct nl_msg *msg;
3482 int err;
3483 size_t i;
3484
3485 msg = nlmsg_alloc();
3486 if (!msg)
3487 return NULL;
3488
3489 nl80211_cmd(drv, msg, 0, cmd);
3490
3491 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0)
3492 goto fail;
3493
3494 if (params->num_ssids) {
3495 struct nl_msg *ssids = nlmsg_alloc();
3496 if (ssids == NULL)
3497 goto fail;
3498 for (i = 0; i < params->num_ssids; i++) {
3499 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
3500 params->ssids[i].ssid,
3501 params->ssids[i].ssid_len);
3502 if (nla_put(ssids, i + 1, params->ssids[i].ssid_len,
3503 params->ssids[i].ssid) < 0) {
3504 nlmsg_free(ssids);
3505 goto fail;
3506 }
3507 }
3508 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3509 nlmsg_free(ssids);
3510 if (err < 0)
3511 goto fail;
3512 }
3513
3514 if (params->extra_ies) {
3515 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
3516 params->extra_ies, params->extra_ies_len);
3517 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
3518 params->extra_ies) < 0)
3519 goto fail;
3520 }
3521
3522 if (params->freqs) {
3523 struct nl_msg *freqs = nlmsg_alloc();
3524 if (freqs == NULL)
3525 goto fail;
3526 for (i = 0; params->freqs[i]; i++) {
3527 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3528 "MHz", params->freqs[i]);
3529 if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) {
3530 nlmsg_free(freqs);
3531 goto fail;
3532 }
3533 }
3534 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES,
3535 freqs);
3536 nlmsg_free(freqs);
3537 if (err < 0)
3538 goto fail;
3539 }
3540
3541 os_free(drv->filter_ssids);
3542 drv->filter_ssids = params->filter_ssids;
3543 params->filter_ssids = NULL;
3544 drv->num_filter_ssids = params->num_filter_ssids;
3545
3546 return msg;
3547
3548 fail:
3549 nlmsg_free(msg);
3550 return NULL;
3551 }
3552
3553
3554 /**
3555 * wpa_driver_nl80211_scan - Request the driver to initiate scan
3556 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3557 * @params: Scan parameters
3558 * Returns: 0 on success, -1 on failure
3559 */
3560 static int wpa_driver_nl80211_scan(void *priv,
3561 struct wpa_driver_scan_params *params)
3562 {
3563 struct i802_bss *bss = priv;
3564 struct wpa_driver_nl80211_data *drv = bss->drv;
3565 int ret = -1, timeout;
3566 struct nl_msg *msg, *rates = NULL;
3567
3568 drv->scan_for_auth = 0;
3569
3570 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params);
3571 if (!msg)
3572 return -1;
3573
3574 if (params->p2p_probe) {
3575 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
3576
3577 rates = nlmsg_alloc();
3578 if (rates == NULL)
3579 goto nla_put_failure;
3580
3581 /*
3582 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
3583 * by masking out everything else apart from the OFDM rates 6,
3584 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
3585 * rates are left enabled.
3586 */
3587 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
3588 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
3589 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) <
3590 0)
3591 goto nla_put_failure;
3592
3593 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
3594 }
3595
3596 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3597 msg = NULL;
3598 if (ret) {
3599 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
3600 "(%s)", ret, strerror(-ret));
3601 #ifdef HOSTAPD
3602 if (is_ap_interface(drv->nlmode)) {
3603 /*
3604 * mac80211 does not allow scan requests in AP mode, so
3605 * try to do this in station mode.
3606 */
3607 if (wpa_driver_nl80211_set_mode(
3608 bss, NL80211_IFTYPE_STATION))
3609 goto nla_put_failure;
3610
3611 if (wpa_driver_nl80211_scan(drv, params)) {
3612 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
3613 goto nla_put_failure;
3614 }
3615
3616 /* Restore AP mode when processing scan results */
3617 drv->ap_scan_as_station = drv->nlmode;
3618 ret = 0;
3619 } else
3620 goto nla_put_failure;
3621 #else /* HOSTAPD */
3622 goto nla_put_failure;
3623 #endif /* HOSTAPD */
3624 }
3625
3626 /* Not all drivers generate "scan completed" wireless event, so try to
3627 * read results after a timeout. */
3628 timeout = 10;
3629 if (drv->scan_complete_events) {
3630 /*
3631 * The driver seems to deliver events to notify when scan is
3632 * complete, so use longer timeout to avoid race conditions
3633 * with scanning and following association request.
3634 */
3635 timeout = 30;
3636 }
3637 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
3638 "seconds", ret, timeout);
3639 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3640 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
3641 drv, drv->ctx);
3642
3643 nla_put_failure:
3644 nlmsg_free(msg);
3645 nlmsg_free(rates);
3646 return ret;
3647 }
3648
3649
3650 /**
3651 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
3652 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3653 * @params: Scan parameters
3654 * @interval: Interval between scan cycles in milliseconds
3655 * Returns: 0 on success, -1 on failure or if not supported
3656 */
3657 static int wpa_driver_nl80211_sched_scan(void *priv,
3658 struct wpa_driver_scan_params *params,
3659 u32 interval)
3660 {
3661 struct i802_bss *bss = priv;
3662 struct wpa_driver_nl80211_data *drv = bss->drv;
3663 int ret = -1;
3664 struct nl_msg *msg;
3665 struct nl_msg *match_set_ssid = NULL, *match_sets = NULL;
3666 struct nl_msg *match_set_rssi = NULL;
3667 size_t i;
3668
3669 #ifdef ANDROID
3670 if (!drv->capa.sched_scan_supported)
3671 return android_pno_start(bss, params);
3672 #endif /* ANDROID */
3673
3674 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params);
3675 if (!msg)
3676 goto nla_put_failure;
3677
3678 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
3679
3680 if ((drv->num_filter_ssids &&
3681 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
3682 params->filter_rssi) {
3683 match_sets = nlmsg_alloc();
3684 if (match_sets == NULL)
3685 goto nla_put_failure;
3686
3687 for (i = 0; i < drv->num_filter_ssids; i++) {
3688 wpa_hexdump_ascii(MSG_MSGDUMP,
3689 "nl80211: Sched scan filter SSID",
3690 drv->filter_ssids[i].ssid,
3691 drv->filter_ssids[i].ssid_len);
3692
3693 match_set_ssid = nlmsg_alloc();
3694 if (match_set_ssid == NULL)
3695 goto nla_put_failure;
3696 NLA_PUT(match_set_ssid,
3697 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
3698 drv->filter_ssids[i].ssid_len,
3699 drv->filter_ssids[i].ssid);
3700
3701 if (nla_put_nested(match_sets, i + 1, match_set_ssid) <
3702 0)
3703 goto nla_put_failure;
3704 }
3705
3706 if (params->filter_rssi) {
3707 match_set_rssi = nlmsg_alloc();
3708 if (match_set_rssi == NULL)
3709 goto nla_put_failure;
3710 NLA_PUT_U32(match_set_rssi,
3711 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
3712 params->filter_rssi);
3713 wpa_printf(MSG_MSGDUMP,
3714 "nl80211: Sched scan RSSI filter %d dBm",
3715 params->filter_rssi);
3716 if (nla_put_nested(match_sets, 0, match_set_rssi) < 0)
3717 goto nla_put_failure;
3718 }
3719
3720 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
3721 match_sets) < 0)
3722 goto nla_put_failure;
3723 }
3724
3725 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3726
3727 /* TODO: if we get an error here, we should fall back to normal scan */
3728
3729 msg = NULL;
3730 if (ret) {
3731 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
3732 "ret=%d (%s)", ret, strerror(-ret));
3733 goto nla_put_failure;
3734 }
3735
3736 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
3737 "scan interval %d msec", ret, interval);
3738
3739 nla_put_failure:
3740 nlmsg_free(match_set_ssid);
3741 nlmsg_free(match_sets);
3742 nlmsg_free(match_set_rssi);
3743 nlmsg_free(msg);
3744 return ret;
3745 }
3746
3747
3748 /**
3749 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
3750 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3751 * Returns: 0 on success, -1 on failure or if not supported
3752 */
3753 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
3754 {
3755 struct i802_bss *bss = priv;
3756 struct wpa_driver_nl80211_data *drv = bss->drv;
3757 int ret = 0;
3758 struct nl_msg *msg;
3759
3760 #ifdef ANDROID
3761 if (!drv->capa.sched_scan_supported)
3762 return android_pno_stop(bss);
3763 #endif /* ANDROID */
3764
3765 msg = nlmsg_alloc();
3766 if (!msg)
3767 return -1;
3768
3769 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
3770
3771 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3772
3773 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3774 msg = NULL;
3775 if (ret) {
3776 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
3777 "ret=%d (%s)", ret, strerror(-ret));
3778 goto nla_put_failure;
3779 }
3780
3781 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
3782
3783 nla_put_failure:
3784 nlmsg_free(msg);
3785 return ret;
3786 }
3787
3788
3789 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
3790 {
3791 const u8 *end, *pos;
3792
3793 if (ies == NULL)
3794 return NULL;
3795
3796 pos = ies;
3797 end = ies + ies_len;
3798
3799 while (pos + 1 < end) {
3800 if (pos + 2 + pos[1] > end)
3801 break;
3802 if (pos[0] == ie)
3803 return pos;
3804 pos += 2 + pos[1];
3805 }
3806
3807 return NULL;
3808 }
3809
3810
3811 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
3812 const u8 *ie, size_t ie_len)
3813 {
3814 const u8 *ssid;
3815 size_t i;
3816
3817 if (drv->filter_ssids == NULL)
3818 return 0;
3819
3820 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
3821 if (ssid == NULL)
3822 return 1;
3823
3824 for (i = 0; i < drv->num_filter_ssids; i++) {
3825 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
3826 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
3827 0)
3828 return 0;
3829 }
3830
3831 return 1;
3832 }
3833
3834
3835 static int bss_info_handler(struct nl_msg *msg, void *arg)
3836 {
3837 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3838 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3839 struct nlattr *bss[NL80211_BSS_MAX + 1];
3840 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
3841 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
3842 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
3843 [NL80211_BSS_TSF] = { .type = NLA_U64 },
3844 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
3845 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
3846 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
3847 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
3848 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
3849 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
3850 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
3851 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
3852 };
3853 struct nl80211_bss_info_arg *_arg = arg;
3854 struct wpa_scan_results *res = _arg->res;
3855 struct wpa_scan_res **tmp;
3856 struct wpa_scan_res *r;
3857 const u8 *ie, *beacon_ie;
3858 size_t ie_len, beacon_ie_len;
3859 u8 *pos;
3860 size_t i;
3861
3862 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3863 genlmsg_attrlen(gnlh, 0), NULL);
3864 if (!tb[NL80211_ATTR_BSS])
3865 return NL_SKIP;
3866 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
3867 bss_policy))
3868 return NL_SKIP;
3869 if (bss[NL80211_BSS_STATUS]) {
3870 enum nl80211_bss_status status;
3871 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3872 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3873 bss[NL80211_BSS_FREQUENCY]) {
3874 _arg->assoc_freq =
3875 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3876 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
3877 _arg->assoc_freq);
3878 }
3879 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3880 bss[NL80211_BSS_BSSID]) {
3881 os_memcpy(_arg->assoc_bssid,
3882 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3883 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3884 MACSTR, MAC2STR(_arg->assoc_bssid));
3885 }
3886 }
3887 if (!res)
3888 return NL_SKIP;
3889 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3890 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3891 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3892 } else {
3893 ie = NULL;
3894 ie_len = 0;
3895 }
3896 if (bss[NL80211_BSS_BEACON_IES]) {
3897 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3898 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3899 } else {
3900 beacon_ie = NULL;
3901 beacon_ie_len = 0;
3902 }
3903
3904 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3905 ie ? ie_len : beacon_ie_len))
3906 return NL_SKIP;
3907
3908 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3909 if (r == NULL)
3910 return NL_SKIP;
3911 if (bss[NL80211_BSS_BSSID])
3912 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3913 ETH_ALEN);
3914 if (bss[NL80211_BSS_FREQUENCY])
3915 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3916 if (bss[NL80211_BSS_BEACON_INTERVAL])
3917 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3918 if (bss[NL80211_BSS_CAPABILITY])
3919 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3920 r->flags |= WPA_SCAN_NOISE_INVALID;
3921 if (bss[NL80211_BSS_SIGNAL_MBM]) {
3922 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3923 r->level /= 100; /* mBm to dBm */
3924 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3925 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3926 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3927 r->flags |= WPA_SCAN_QUAL_INVALID;
3928 } else
3929 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3930 if (bss[NL80211_BSS_TSF])
3931 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3932 if (bss[NL80211_BSS_SEEN_MS_AGO])
3933 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3934 r->ie_len = ie_len;
3935 pos = (u8 *) (r + 1);
3936 if (ie) {
3937 os_memcpy(pos, ie, ie_len);
3938 pos += ie_len;
3939 }
3940 r->beacon_ie_len = beacon_ie_len;
3941 if (beacon_ie)
3942 os_memcpy(pos, beacon_ie, beacon_ie_len);
3943
3944 if (bss[NL80211_BSS_STATUS]) {
3945 enum nl80211_bss_status status;
3946 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3947 switch (status) {
3948 case NL80211_BSS_STATUS_AUTHENTICATED:
3949 r->flags |= WPA_SCAN_AUTHENTICATED;
3950 break;
3951 case NL80211_BSS_STATUS_ASSOCIATED:
3952 r->flags |= WPA_SCAN_ASSOCIATED;
3953 break;
3954 default:
3955 break;
3956 }
3957 }
3958
3959 /*
3960 * cfg80211 maintains separate BSS table entries for APs if the same
3961 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3962 * not use frequency as a separate key in the BSS table, so filter out
3963 * duplicated entries. Prefer associated BSS entry in such a case in
3964 * order to get the correct frequency into the BSS table.
3965 */
3966 for (i = 0; i < res->num; i++) {
3967 const u8 *s1, *s2;
3968 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3969 continue;
3970
3971 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3972 res->res[i]->ie_len, WLAN_EID_SSID);
3973 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3974 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3975 os_memcmp(s1, s2, 2 + s1[1]) != 0)
3976 continue;
3977
3978 /* Same BSSID,SSID was already included in scan results */
3979 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3980 "for " MACSTR, MAC2STR(r->bssid));
3981
3982 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3983 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3984 os_free(res->res[i]);
3985 res->res[i] = r;
3986 } else
3987 os_free(r);
3988 return NL_SKIP;
3989 }
3990
3991 tmp = os_realloc_array(res->res, res->num + 1,
3992 sizeof(struct wpa_scan_res *));
3993 if (tmp == NULL) {
3994 os_free(r);
3995 return NL_SKIP;
3996 }
3997 tmp[res->num++] = r;
3998 res->res = tmp;
3999
4000 return NL_SKIP;
4001 }
4002
4003
4004 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
4005 const u8 *addr)
4006 {
4007 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
4008 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
4009 "mismatch (" MACSTR ")", MAC2STR(addr));
4010 wpa_driver_nl80211_mlme(drv, addr,
4011 NL80211_CMD_DEAUTHENTICATE,
4012 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
4013 }
4014 }
4015
4016
4017 static void wpa_driver_nl80211_check_bss_status(
4018 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
4019 {
4020 size_t i;
4021
4022 for (i = 0; i < res->num; i++) {
4023 struct wpa_scan_res *r = res->res[i];
4024 if (r->flags & WPA_SCAN_AUTHENTICATED) {
4025 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4026 "indicates BSS status with " MACSTR
4027 " as authenticated",
4028 MAC2STR(r->bssid));
4029 if (is_sta_interface(drv->nlmode) &&
4030 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
4031 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
4032 0) {
4033 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
4034 " in local state (auth=" MACSTR
4035 " assoc=" MACSTR ")",
4036 MAC2STR(drv->auth_bssid),
4037 MAC2STR(drv->bssid));
4038 clear_state_mismatch(drv, r->bssid);
4039 }
4040 }
4041
4042 if (r->flags & WPA_SCAN_ASSOCIATED) {
4043 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4044 "indicate BSS status with " MACSTR
4045 " as associated",
4046 MAC2STR(r->bssid));
4047 if (is_sta_interface(drv->nlmode) &&
4048 !drv->associated) {
4049 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4050 "(not associated) does not match "
4051 "with BSS state");
4052 clear_state_mismatch(drv, r->bssid);
4053 } else if (is_sta_interface(drv->nlmode) &&
4054 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
4055 0) {
4056 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4057 "(associated with " MACSTR ") does "
4058 "not match with BSS state",
4059 MAC2STR(drv->bssid));
4060 clear_state_mismatch(drv, r->bssid);
4061 clear_state_mismatch(drv, drv->bssid);
4062 }
4063 }
4064 }
4065 }
4066
4067
4068 static struct wpa_scan_results *
4069 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
4070 {
4071 struct nl_msg *msg;
4072 struct wpa_scan_results *res;
4073 int ret;
4074 struct nl80211_bss_info_arg arg;
4075
4076 res = os_zalloc(sizeof(*res));
4077 if (res == NULL)
4078 return NULL;
4079 msg = nlmsg_alloc();
4080 if (!msg)
4081 goto nla_put_failure;
4082
4083 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
4084 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4085
4086 arg.drv = drv;
4087 arg.res = res;
4088 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
4089 msg = NULL;
4090 if (ret == 0) {
4091 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
4092 "BSSes)", (unsigned long) res->num);
4093 nl80211_get_noise_for_scan_results(drv, res);
4094 return res;
4095 }
4096 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
4097 "(%s)", ret, strerror(-ret));
4098 nla_put_failure:
4099 nlmsg_free(msg);
4100 wpa_scan_results_free(res);
4101 return NULL;
4102 }
4103
4104
4105 /**
4106 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
4107 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
4108 * Returns: Scan results on success, -1 on failure
4109 */
4110 static struct wpa_scan_results *
4111 wpa_driver_nl80211_get_scan_results(void *priv)
4112 {
4113 struct i802_bss *bss = priv;
4114 struct wpa_driver_nl80211_data *drv = bss->drv;
4115 struct wpa_scan_results *res;
4116
4117 res = nl80211_get_scan_results(drv);
4118 if (res)
4119 wpa_driver_nl80211_check_bss_status(drv, res);
4120 return res;
4121 }
4122
4123
4124 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
4125 {
4126 struct wpa_scan_results *res;
4127 size_t i;
4128
4129 res = nl80211_get_scan_results(drv);
4130 if (res == NULL) {
4131 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
4132 return;
4133 }
4134
4135 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
4136 for (i = 0; i < res->num; i++) {
4137 struct wpa_scan_res *r = res->res[i];
4138 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
4139 (int) i, (int) res->num, MAC2STR(r->bssid),
4140 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
4141 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
4142 }
4143
4144 wpa_scan_results_free(res);
4145 }
4146
4147
4148 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
4149 enum wpa_alg alg, const u8 *addr,
4150 int key_idx, int set_tx,
4151 const u8 *seq, size_t seq_len,
4152 const u8 *key, size_t key_len)
4153 {
4154 struct i802_bss *bss = priv;
4155 struct wpa_driver_nl80211_data *drv = bss->drv;
4156 int ifindex = if_nametoindex(ifname);
4157 struct nl_msg *msg;
4158 int ret;
4159
4160 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
4161 "set_tx=%d seq_len=%lu key_len=%lu",
4162 __func__, ifindex, alg, addr, key_idx, set_tx,
4163 (unsigned long) seq_len, (unsigned long) key_len);
4164 #ifdef CONFIG_TDLS
4165 if (key_idx == -1)
4166 key_idx = 0;
4167 #endif /* CONFIG_TDLS */
4168
4169 msg = nlmsg_alloc();
4170 if (!msg)
4171 return -ENOMEM;
4172
4173 if (alg == WPA_ALG_NONE) {
4174 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
4175 } else {
4176 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
4177 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
4178 switch (alg) {
4179 case WPA_ALG_WEP:
4180 if (key_len == 5)
4181 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4182 WLAN_CIPHER_SUITE_WEP40);
4183 else
4184 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4185 WLAN_CIPHER_SUITE_WEP104);
4186 break;
4187 case WPA_ALG_TKIP:
4188 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4189 WLAN_CIPHER_SUITE_TKIP);
4190 break;
4191 case WPA_ALG_CCMP:
4192 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4193 WLAN_CIPHER_SUITE_CCMP);
4194 break;
4195 case WPA_ALG_IGTK:
4196 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4197 WLAN_CIPHER_SUITE_AES_CMAC);
4198 break;
4199 default:
4200 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4201 "algorithm %d", __func__, alg);
4202 nlmsg_free(msg);
4203 return -1;
4204 }
4205 }
4206
4207 if (seq && seq_len)
4208 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
4209
4210 if (addr && !is_broadcast_ether_addr(addr)) {
4211 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
4212 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4213
4214 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
4215 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
4216 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
4217 NL80211_KEYTYPE_GROUP);
4218 }
4219 } else if (addr && is_broadcast_ether_addr(addr)) {
4220 struct nl_msg *types;
4221 int err;
4222 wpa_printf(MSG_DEBUG, " broadcast key");
4223 types = nlmsg_alloc();
4224 if (!types)
4225 goto nla_put_failure;
4226 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4227 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4228 types);
4229 nlmsg_free(types);
4230 if (err)
4231 goto nla_put_failure;
4232 }
4233 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4234 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4235
4236 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4237 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4238 ret = 0;
4239 if (ret)
4240 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4241 ret, strerror(-ret));
4242
4243 /*
4244 * If we failed or don't need to set the default TX key (below),
4245 * we're done here.
4246 */
4247 if (ret || !set_tx || alg == WPA_ALG_NONE)
4248 return ret;
4249 if (is_ap_interface(drv->nlmode) && addr &&
4250 !is_broadcast_ether_addr(addr))
4251 return ret;
4252
4253 msg = nlmsg_alloc();
4254 if (!msg)
4255 return -ENOMEM;
4256
4257 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4258 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4259 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4260 if (alg == WPA_ALG_IGTK)
4261 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4262 else
4263 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4264 if (addr && is_broadcast_ether_addr(addr)) {
4265 struct nl_msg *types;
4266 int err;
4267 types = nlmsg_alloc();
4268 if (!types)
4269 goto nla_put_failure;
4270 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4271 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4272 types);
4273 nlmsg_free(types);
4274 if (err)
4275 goto nla_put_failure;
4276 } else if (addr) {
4277 struct nl_msg *types;
4278 int err;
4279 types = nlmsg_alloc();
4280 if (!types)
4281 goto nla_put_failure;
4282 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4283 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4284 types);
4285 nlmsg_free(types);
4286 if (err)
4287 goto nla_put_failure;
4288 }
4289
4290 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4291 if (ret == -ENOENT)
4292 ret = 0;
4293 if (ret)
4294 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4295 "err=%d %s)", ret, strerror(-ret));
4296 return ret;
4297
4298 nla_put_failure:
4299 nlmsg_free(msg);
4300 return -ENOBUFS;
4301 }
4302
4303
4304 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4305 int key_idx, int defkey,
4306 const u8 *seq, size_t seq_len,
4307 const u8 *key, size_t key_len)
4308 {
4309 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4310 if (!key_attr)
4311 return -1;
4312
4313 if (defkey && alg == WPA_ALG_IGTK)
4314 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4315 else if (defkey)
4316 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4317
4318 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4319
4320 switch (alg) {
4321 case WPA_ALG_WEP:
4322 if (key_len == 5)
4323 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4324 WLAN_CIPHER_SUITE_WEP40);
4325 else
4326 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4327 WLAN_CIPHER_SUITE_WEP104);
4328 break;
4329 case WPA_ALG_TKIP:
4330 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4331 break;
4332 case WPA_ALG_CCMP:
4333 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4334 break;
4335 case WPA_ALG_IGTK:
4336 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4337 WLAN_CIPHER_SUITE_AES_CMAC);
4338 break;
4339 default:
4340 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4341 "algorithm %d", __func__, alg);
4342 return -1;
4343 }
4344
4345 if (seq && seq_len)
4346 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4347
4348 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4349
4350 nla_nest_end(msg, key_attr);
4351
4352 return 0;
4353 nla_put_failure:
4354 return -1;
4355 }
4356
4357
4358 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4359 struct nl_msg *msg)
4360 {
4361 int i, privacy = 0;
4362 struct nlattr *nl_keys, *nl_key;
4363
4364 for (i = 0; i < 4; i++) {
4365 if (!params->wep_key[i])
4366 continue;
4367 privacy = 1;
4368 break;
4369 }
4370 if (params->wps == WPS_MODE_PRIVACY)
4371 privacy = 1;
4372 if (params->pairwise_suite &&
4373 params->pairwise_suite != WPA_CIPHER_NONE)
4374 privacy = 1;
4375
4376 if (!privacy)
4377 return 0;
4378
4379 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4380
4381 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4382 if (!nl_keys)
4383 goto nla_put_failure;
4384
4385 for (i = 0; i < 4; i++) {
4386 if (!params->wep_key[i])
4387 continue;
4388
4389 nl_key = nla_nest_start(msg, i);
4390 if (!nl_key)
4391 goto nla_put_failure;
4392
4393 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4394 params->wep_key[i]);
4395 if (params->wep_key_len[i] == 5)
4396 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4397 WLAN_CIPHER_SUITE_WEP40);
4398 else
4399 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4400 WLAN_CIPHER_SUITE_WEP104);
4401
4402 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4403
4404 if (i == params->wep_tx_keyidx)
4405 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4406
4407 nla_nest_end(msg, nl_key);
4408 }
4409 nla_nest_end(msg, nl_keys);
4410
4411 return 0;
4412
4413 nla_put_failure:
4414 return -ENOBUFS;
4415 }
4416
4417
4418 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4419 const u8 *addr, int cmd, u16 reason_code,
4420 int local_state_change)
4421 {
4422 int ret = -1;
4423 struct nl_msg *msg;
4424
4425 msg = nlmsg_alloc();
4426 if (!msg)
4427 return -1;
4428
4429 nl80211_cmd(drv, msg, 0, cmd);
4430
4431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4432 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4433 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4434 if (local_state_change)
4435 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4436
4437 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4438 msg = NULL;
4439 if (ret) {
4440 wpa_dbg(drv->ctx, MSG_DEBUG,
4441 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4442 reason_code, ret, strerror(-ret));
4443 goto nla_put_failure;
4444 }
4445 ret = 0;
4446
4447 nla_put_failure:
4448 nlmsg_free(msg);
4449 return ret;
4450 }
4451
4452
4453 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4454 const u8 *addr, int reason_code)
4455 {
4456 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4457 __func__, MAC2STR(addr), reason_code);
4458 drv->associated = 0;
4459 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
4460 reason_code, 0);
4461 }
4462
4463
4464 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
4465 int reason_code)
4466 {
4467 struct i802_bss *bss = priv;
4468 struct wpa_driver_nl80211_data *drv = bss->drv;
4469 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4470 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4471 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4472 __func__, MAC2STR(addr), reason_code);
4473 drv->associated = 0;
4474 if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4475 return nl80211_leave_ibss(drv);
4476 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4477 reason_code, 0);
4478 }
4479
4480
4481 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
4482 int reason_code)
4483 {
4484 struct i802_bss *bss = priv;
4485 struct wpa_driver_nl80211_data *drv = bss->drv;
4486 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4487 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4488 wpa_printf(MSG_DEBUG, "%s", __func__);
4489 drv->associated = 0;
4490 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
4491 reason_code, 0);
4492 }
4493
4494
4495 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
4496 struct wpa_driver_auth_params *params)
4497 {
4498 int i;
4499
4500 drv->auth_freq = params->freq;
4501 drv->auth_alg = params->auth_alg;
4502 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
4503 drv->auth_local_state_change = params->local_state_change;
4504 drv->auth_p2p = params->p2p;
4505
4506 if (params->bssid)
4507 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
4508 else
4509 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
4510
4511 if (params->ssid) {
4512 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
4513 drv->auth_ssid_len = params->ssid_len;
4514 } else
4515 drv->auth_ssid_len = 0;
4516
4517
4518 os_free(drv->auth_ie);
4519 drv->auth_ie = NULL;
4520 drv->auth_ie_len = 0;
4521 if (params->ie) {
4522 drv->auth_ie = os_malloc(params->ie_len);
4523 if (drv->auth_ie) {
4524 os_memcpy(drv->auth_ie, params->ie, params->ie_len);
4525 drv->auth_ie_len = params->ie_len;
4526 }
4527 }
4528
4529 for (i = 0; i < 4; i++) {
4530 if (params->wep_key[i] && params->wep_key_len[i] &&
4531 params->wep_key_len[i] <= 16) {
4532 os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
4533 params->wep_key_len[i]);
4534 drv->auth_wep_key_len[i] = params->wep_key_len[i];
4535 } else
4536 drv->auth_wep_key_len[i] = 0;
4537 }
4538 }
4539
4540
4541 static int wpa_driver_nl80211_authenticate(
4542 void *priv, struct wpa_driver_auth_params *params)
4543 {
4544 struct i802_bss *bss = priv;
4545 struct wpa_driver_nl80211_data *drv = bss->drv;
4546 int ret = -1, i;
4547 struct nl_msg *msg;
4548 enum nl80211_auth_type type;
4549 enum nl80211_iftype nlmode;
4550 int count = 0;
4551 int is_retry;
4552
4553 is_retry = drv->retry_auth;
4554 drv->retry_auth = 0;
4555
4556 drv->associated = 0;
4557 os_memset(drv->auth_bssid, 0, ETH_ALEN);
4558 /* FIX: IBSS mode */
4559 nlmode = params->p2p ?
4560 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4561 if (drv->nlmode != nlmode &&
4562 wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4563 return -1;
4564
4565 retry:
4566 msg = nlmsg_alloc();
4567 if (!msg)
4568 return -1;
4569
4570 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
4571 drv->ifindex);
4572
4573 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
4574
4575 for (i = 0; i < 4; i++) {
4576 if (!params->wep_key[i])
4577 continue;
4578 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
4579 NULL, i,
4580 i == params->wep_tx_keyidx, NULL, 0,
4581 params->wep_key[i],
4582 params->wep_key_len[i]);
4583 if (params->wep_tx_keyidx != i)
4584 continue;
4585 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
4586 params->wep_key[i], params->wep_key_len[i])) {
4587 nlmsg_free(msg);
4588 return -1;
4589 }
4590 }
4591
4592 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4593 if (params->bssid) {
4594 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4595 MAC2STR(params->bssid));
4596 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4597 }
4598 if (params->freq) {
4599 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4600 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4601 }
4602 if (params->ssid) {
4603 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4604 params->ssid, params->ssid_len);
4605 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4606 params->ssid);
4607 }
4608 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
4609 if (params->ie)
4610 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
4611 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4612 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4613 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4614 type = NL80211_AUTHTYPE_SHARED_KEY;
4615 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4616 type = NL80211_AUTHTYPE_NETWORK_EAP;
4617 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4618 type = NL80211_AUTHTYPE_FT;
4619 else
4620 goto nla_put_failure;
4621 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4622 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4623 if (params->local_state_change) {
4624 wpa_printf(MSG_DEBUG, " * Local state change only");
4625 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4626 }
4627
4628 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4629 msg = NULL;
4630 if (ret) {
4631 wpa_dbg(drv->ctx, MSG_DEBUG,
4632 "nl80211: MLME command failed (auth): ret=%d (%s)",
4633 ret, strerror(-ret));
4634 count++;
4635 if (ret == -EALREADY && count == 1 && params->bssid &&
4636 !params->local_state_change) {
4637 /*
4638 * mac80211 does not currently accept new
4639 * authentication if we are already authenticated. As a
4640 * workaround, force deauthentication and try again.
4641 */
4642 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
4643 "after forced deauthentication");
4644 wpa_driver_nl80211_deauthenticate(
4645 bss, params->bssid,
4646 WLAN_REASON_PREV_AUTH_NOT_VALID);
4647 nlmsg_free(msg);
4648 goto retry;
4649 }
4650
4651 if (ret == -ENOENT && params->freq && !is_retry) {
4652 /*
4653 * cfg80211 has likely expired the BSS entry even
4654 * though it was previously available in our internal
4655 * BSS table. To recover quickly, start a single
4656 * channel scan on the specified channel.
4657 */
4658 struct wpa_driver_scan_params scan;
4659 int freqs[2];
4660
4661 os_memset(&scan, 0, sizeof(scan));
4662 scan.num_ssids = 1;
4663 if (params->ssid) {
4664 scan.ssids[0].ssid = params->ssid;
4665 scan.ssids[0].ssid_len = params->ssid_len;
4666 }
4667 freqs[0] = params->freq;
4668 freqs[1] = 0;
4669 scan.freqs = freqs;
4670 wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
4671 "channel scan to refresh cfg80211 BSS "
4672 "entry");
4673 ret = wpa_driver_nl80211_scan(bss, &scan);
4674 if (ret == 0) {
4675 nl80211_copy_auth_params(drv, params);
4676 drv->scan_for_auth = 1;
4677 }
4678 } else if (is_retry) {
4679 /*
4680 * Need to indicate this with an event since the return
4681 * value from the retry is not delivered to core code.
4682 */
4683 union wpa_event_data event;
4684 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
4685 "failed");
4686 os_memset(&event, 0, sizeof(event));
4687 os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
4688 ETH_ALEN);
4689 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
4690 &event);
4691 }
4692
4693 goto nla_put_failure;
4694 }
4695 ret = 0;
4696 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
4697 "successfully");
4698
4699 nla_put_failure:
4700 nlmsg_free(msg);
4701 return ret;
4702 }
4703
4704
4705 static int wpa_driver_nl80211_authenticate_retry(
4706 struct wpa_driver_nl80211_data *drv)
4707 {
4708 struct wpa_driver_auth_params params;
4709 struct i802_bss *bss = &drv->first_bss;
4710 int i;
4711
4712 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
4713
4714 os_memset(&params, 0, sizeof(params));
4715 params.freq = drv->auth_freq;
4716 params.auth_alg = drv->auth_alg;
4717 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
4718 params.local_state_change = drv->auth_local_state_change;
4719 params.p2p = drv->auth_p2p;
4720
4721 if (!is_zero_ether_addr(drv->auth_bssid_))
4722 params.bssid = drv->auth_bssid_;
4723
4724 if (drv->auth_ssid_len) {
4725 params.ssid = drv->auth_ssid;
4726 params.ssid_len = drv->auth_ssid_len;
4727 }
4728
4729 params.ie = drv->auth_ie;
4730 params.ie_len = drv->auth_ie_len;
4731
4732 for (i = 0; i < 4; i++) {
4733 if (drv->auth_wep_key_len[i]) {
4734 params.wep_key[i] = drv->auth_wep_key[i];
4735 params.wep_key_len[i] = drv->auth_wep_key_len[i];
4736 }
4737 }
4738
4739 drv->retry_auth = 1;
4740 return wpa_driver_nl80211_authenticate(bss, &params);
4741 }
4742
4743
4744 struct phy_info_arg {
4745 u16 *num_modes;
4746 struct hostapd_hw_modes *modes;
4747 };
4748
4749 static int phy_info_handler(struct nl_msg *msg, void *arg)
4750 {
4751 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4752 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4753 struct phy_info_arg *phy_info = arg;
4754
4755 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
4756
4757 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
4758 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4759 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
4760 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
4761 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
4762 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
4763 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
4764 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
4765 };
4766
4767 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
4768 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
4769 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
4770 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
4771 };
4772
4773 struct nlattr *nl_band;
4774 struct nlattr *nl_freq;
4775 struct nlattr *nl_rate;
4776 int rem_band, rem_freq, rem_rate;
4777 struct hostapd_hw_modes *mode;
4778 int idx, mode_is_set;
4779
4780 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4781 genlmsg_attrlen(gnlh, 0), NULL);
4782
4783 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
4784 return NL_SKIP;
4785
4786 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
4787 mode = os_realloc_array(phy_info->modes,
4788 *phy_info->num_modes + 1,
4789 sizeof(*mode));
4790 if (!mode)
4791 return NL_SKIP;
4792 phy_info->modes = mode;
4793
4794 mode_is_set = 0;
4795
4796 mode = &phy_info->modes[*(phy_info->num_modes)];
4797 memset(mode, 0, sizeof(*mode));
4798 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
4799 *(phy_info->num_modes) += 1;
4800
4801 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
4802 nla_len(nl_band), NULL);
4803
4804 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
4805 mode->ht_capab = nla_get_u16(
4806 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
4807 }
4808
4809 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
4810 mode->a_mpdu_params |= nla_get_u8(
4811 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
4812 0x03;
4813 }
4814
4815 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
4816 mode->a_mpdu_params |= nla_get_u8(
4817 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
4818 2;
4819 }
4820
4821 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
4822 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
4823 u8 *mcs;
4824 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
4825 os_memcpy(mode->mcs_set, mcs, 16);
4826 }
4827
4828 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) {
4829 mode->vht_capab = nla_get_u32(
4830 tb_band[NL80211_BAND_ATTR_VHT_CAPA]);
4831 }
4832
4833 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] &&
4834 nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) {
4835 u8 *mcs;
4836 mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
4837 os_memcpy(mode->vht_mcs_set, mcs, 8);
4838 }
4839
4840 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4841 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4842 nla_len(nl_freq), freq_policy);
4843 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4844 continue;
4845 mode->num_channels++;
4846 }
4847
4848 mode->channels = os_calloc(mode->num_channels,
4849 sizeof(struct hostapd_channel_data));
4850 if (!mode->channels)
4851 return NL_SKIP;
4852
4853 idx = 0;
4854
4855 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4856 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4857 nla_len(nl_freq), freq_policy);
4858 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4859 continue;
4860
4861 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
4862 mode->channels[idx].flag = 0;
4863
4864 if (!mode_is_set) {
4865 /* crude heuristic */
4866 if (mode->channels[idx].freq < 4000)
4867 mode->mode = HOSTAPD_MODE_IEEE80211B;
4868 else
4869 mode->mode = HOSTAPD_MODE_IEEE80211A;
4870 mode_is_set = 1;
4871 }
4872
4873 /* crude heuristic */
4874 if (mode->channels[idx].freq < 4000)
4875 if (mode->channels[idx].freq == 2484)
4876 mode->channels[idx].chan = 14;
4877 else
4878 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
4879 else
4880 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
4881
4882 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4883 mode->channels[idx].flag |=
4884 HOSTAPD_CHAN_DISABLED;
4885 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
4886 mode->channels[idx].flag |=
4887 HOSTAPD_CHAN_PASSIVE_SCAN;
4888 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
4889 mode->channels[idx].flag |=
4890 HOSTAPD_CHAN_NO_IBSS;
4891 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
4892 mode->channels[idx].flag |=
4893 HOSTAPD_CHAN_RADAR;
4894
4895 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
4896 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4897 mode->channels[idx].max_tx_power =
4898 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
4899
4900 idx++;
4901 }
4902
4903 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4904 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4905 nla_len(nl_rate), rate_policy);
4906 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4907 continue;
4908 mode->num_rates++;
4909 }
4910
4911 mode->rates = os_calloc(mode->num_rates, sizeof(int));
4912 if (!mode->rates)
4913 return NL_SKIP;
4914
4915 idx = 0;
4916
4917 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4918 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4919 nla_len(nl_rate), rate_policy);
4920 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4921 continue;
4922 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
4923
4924 /* crude heuristic */
4925 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
4926 mode->rates[idx] > 200)
4927 mode->mode = HOSTAPD_MODE_IEEE80211G;
4928
4929 idx++;
4930 }
4931 }
4932
4933 return NL_SKIP;
4934 }
4935
4936 static struct hostapd_hw_modes *
4937 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
4938 {
4939 u16 m;
4940 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
4941 int i, mode11g_idx = -1;
4942
4943 /* If only 802.11g mode is included, use it to construct matching
4944 * 802.11b mode data. */
4945
4946 for (m = 0; m < *num_modes; m++) {
4947 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
4948 return modes; /* 802.11b already included */
4949 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
4950 mode11g_idx = m;
4951 }
4952
4953 if (mode11g_idx < 0)
4954 return modes; /* 2.4 GHz band not supported at all */
4955
4956 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
4957 if (nmodes == NULL)
4958 return modes; /* Could not add 802.11b mode */
4959
4960 mode = &nmodes[*num_modes];
4961 os_memset(mode, 0, sizeof(*mode));
4962 (*num_modes)++;
4963 modes = nmodes;
4964
4965 mode->mode = HOSTAPD_MODE_IEEE80211B;
4966
4967 mode11g = &modes[mode11g_idx];
4968 mode->num_channels = mode11g->num_channels;
4969 mode->channels = os_malloc(mode11g->num_channels *
4970 sizeof(struct hostapd_channel_data));
4971 if (mode->channels == NULL) {
4972 (*num_modes)--;
4973 return modes; /* Could not add 802.11b mode */
4974 }
4975 os_memcpy(mode->channels, mode11g->channels,
4976 mode11g->num_channels * sizeof(struct hostapd_channel_data));
4977
4978 mode->num_rates = 0;
4979 mode->rates = os_malloc(4 * sizeof(int));
4980 if (mode->rates == NULL) {
4981 os_free(mode->channels);
4982 (*num_modes)--;
4983 return modes; /* Could not add 802.11b mode */
4984 }
4985
4986 for (i = 0; i < mode11g->num_rates; i++) {
4987 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
4988 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
4989 continue;
4990 mode->rates[mode->num_rates] = mode11g->rates[i];
4991 mode->num_rates++;
4992 if (mode->num_rates == 4)
4993 break;
4994 }
4995
4996 if (mode->num_rates == 0) {
4997 os_free(mode->channels);
4998 os_free(mode->rates);
4999 (*num_modes)--;
5000 return modes; /* No 802.11b rates */
5001 }
5002
5003 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
5004 "information");
5005
5006 return modes;
5007 }
5008
5009
5010 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
5011 int end)
5012 {
5013 int c;
5014
5015 for (c = 0; c < mode->num_channels; c++) {
5016 struct hostapd_channel_data *chan = &mode->channels[c];
5017 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
5018 chan->flag |= HOSTAPD_CHAN_HT40;
5019 }
5020 }
5021
5022
5023 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
5024 int end)
5025 {
5026 int c;
5027
5028 for (c = 0; c < mode->num_channels; c++) {
5029 struct hostapd_channel_data *chan = &mode->channels[c];
5030 if (!(chan->flag & HOSTAPD_CHAN_HT40))
5031 continue;
5032 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
5033 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
5034 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
5035 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
5036 }
5037 }
5038
5039
5040 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
5041 struct phy_info_arg *results)
5042 {
5043 u32 start, end, max_bw;
5044 u16 m;
5045
5046 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5047 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5048 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5049 return;
5050
5051 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5052 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5053 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5054
5055 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
5056 start, end, max_bw);
5057 if (max_bw < 40)
5058 return;
5059
5060 for (m = 0; m < *results->num_modes; m++) {
5061 if (!(results->modes[m].ht_capab &
5062 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5063 continue;
5064 nl80211_set_ht40_mode(&results->modes[m], start, end);
5065 }
5066 }
5067
5068
5069 static void nl80211_reg_rule_sec(struct nlattr *tb[],
5070 struct phy_info_arg *results)
5071 {
5072 u32 start, end, max_bw;
5073 u16 m;
5074
5075 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5076 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5077 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5078 return;
5079
5080 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5081 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5082 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5083
5084 if (max_bw < 20)
5085 return;
5086
5087 for (m = 0; m < *results->num_modes; m++) {
5088 if (!(results->modes[m].ht_capab &
5089 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5090 continue;
5091 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
5092 }
5093 }
5094
5095
5096 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
5097 {
5098 struct phy_info_arg *results = arg;
5099 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5100 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5101 struct nlattr *nl_rule;
5102 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
5103 int rem_rule;
5104 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5105 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5106 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5107 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5108 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5109 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5110 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5111 };
5112
5113 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5114 genlmsg_attrlen(gnlh, 0), NULL);
5115 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
5116 !tb_msg[NL80211_ATTR_REG_RULES]) {
5117 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
5118 "available");
5119 return NL_SKIP;
5120 }
5121
5122 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
5123 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
5124
5125 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5126 {
5127 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5128 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5129 nl80211_reg_rule_ht40(tb_rule, results);
5130 }
5131
5132 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5133 {
5134 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5135 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5136 nl80211_reg_rule_sec(tb_rule, results);
5137 }
5138
5139 return NL_SKIP;
5140 }
5141
5142
5143 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
5144 struct phy_info_arg *results)
5145 {
5146 struct nl_msg *msg;
5147
5148 msg = nlmsg_alloc();
5149 if (!msg)
5150 return -ENOMEM;
5151
5152 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
5153 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
5154 }
5155
5156
5157 static struct hostapd_hw_modes *
5158 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
5159 {
5160 struct i802_bss *bss = priv;
5161 struct wpa_driver_nl80211_data *drv = bss->drv;
5162 struct nl_msg *msg;
5163 struct phy_info_arg result = {
5164 .num_modes = num_modes,
5165 .modes = NULL,
5166 };
5167
5168 *num_modes = 0;
5169 *flags = 0;
5170
5171 msg = nlmsg_alloc();
5172 if (!msg)
5173 return NULL;
5174
5175 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
5176
5177 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5178
5179 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
5180 nl80211_set_ht40_flags(drv, &result);
5181 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
5182 }
5183 msg = NULL;
5184 nla_put_failure:
5185 nlmsg_free(msg);
5186 return NULL;
5187 }
5188
5189
5190 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
5191 const void *data, size_t len,
5192 int encrypt, int noack)
5193 {
5194 __u8 rtap_hdr[] = {
5195 0x00, 0x00, /* radiotap version */
5196 0x0e, 0x00, /* radiotap length */
5197 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
5198 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
5199 0x00, /* padding */
5200 0x00, 0x00, /* RX and TX flags to indicate that */
5201 0x00, 0x00, /* this is the injected frame directly */
5202 };
5203 struct iovec iov[2] = {
5204 {
5205 .iov_base = &rtap_hdr,
5206 .iov_len = sizeof(rtap_hdr),
5207 },
5208 {
5209 .iov_base = (void *) data,
5210 .iov_len = len,
5211 }
5212 };
5213 struct msghdr msg = {
5214 .msg_name = NULL,
5215 .msg_namelen = 0,
5216 .msg_iov = iov,
5217 .msg_iovlen = 2,
5218 .msg_control = NULL,
5219 .msg_controllen = 0,
5220 .msg_flags = 0,
5221 };
5222 int res;
5223 u16 txflags = 0;
5224
5225 if (encrypt)
5226 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
5227
5228 if (drv->monitor_sock < 0) {
5229 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
5230 "for %s", __func__);
5231 return -1;
5232 }
5233
5234 if (noack)
5235 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
5236 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
5237
5238 res = sendmsg(drv->monitor_sock, &msg, 0);
5239 if (res < 0) {
5240 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5241 return -1;
5242 }
5243 return 0;
5244 }
5245
5246
5247 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5248 const void *data, size_t len,
5249 int encrypt, int noack,
5250 unsigned int freq, int no_cck,
5251 int offchanok, unsigned int wait_time)
5252 {
5253 struct wpa_driver_nl80211_data *drv = bss->drv;
5254 u64 cookie;
5255
5256 if (freq == 0)
5257 freq = bss->freq;
5258
5259 if (drv->use_monitor)
5260 return wpa_driver_nl80211_send_mntr(drv, data, len,
5261 encrypt, noack);
5262
5263 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
5264 &cookie, no_cck, noack, offchanok);
5265 }
5266
5267
5268 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss,
5269 const u8 *data,
5270 size_t data_len, int noack,
5271 unsigned int freq, int no_cck,
5272 int offchanok,
5273 unsigned int wait_time)
5274 {
5275 struct wpa_driver_nl80211_data *drv = bss->drv;
5276 struct ieee80211_mgmt *mgmt;
5277 int encrypt = 1;
5278 u16 fc;
5279
5280 mgmt = (struct ieee80211_mgmt *) data;
5281 fc = le_to_host16(mgmt->frame_control);
5282
5283 if (is_sta_interface(drv->nlmode) &&
5284 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5285 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5286 /*
5287 * The use of last_mgmt_freq is a bit of a hack,
5288 * but it works due to the single-threaded nature
5289 * of wpa_supplicant.
5290 */
5291 if (freq == 0)
5292 freq = drv->last_mgmt_freq;
5293 return nl80211_send_frame_cmd(bss, freq, 0,
5294 data, data_len, NULL, 1, noack,
5295 1);
5296 }
5297
5298 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5299 if (freq == 0)
5300 freq = bss->freq;
5301 return nl80211_send_frame_cmd(bss, freq,
5302 (int) freq == bss->freq ? 0 :
5303 wait_time,
5304 data, data_len,
5305 &drv->send_action_cookie,
5306 no_cck, noack, offchanok);
5307 }
5308
5309 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5310 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5311 /*
5312 * Only one of the authentication frame types is encrypted.
5313 * In order for static WEP encryption to work properly (i.e.,
5314 * to not encrypt the frame), we need to tell mac80211 about
5315 * the frames that must not be encrypted.
5316 */
5317 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5318 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5319 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5320 encrypt = 0;
5321 }
5322
5323 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5324 noack, freq, no_cck, offchanok,
5325 wait_time);
5326 }
5327
5328
5329 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
5330 size_t data_len, int noack)
5331 {
5332 struct i802_bss *bss = priv;
5333 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack,
5334 0, 0, 0, 0);
5335 }
5336
5337
5338 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5339 int slot, int ht_opmode, int ap_isolate,
5340 int *basic_rates)
5341 {
5342 struct wpa_driver_nl80211_data *drv = bss->drv;
5343 struct nl_msg *msg;
5344
5345 msg = nlmsg_alloc();
5346 if (!msg)
5347 return -ENOMEM;
5348
5349 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5350
5351 if (cts >= 0)
5352 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5353 if (preamble >= 0)
5354 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5355 if (slot >= 0)
5356 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5357 if (ht_opmode >= 0)
5358 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5359 if (ap_isolate >= 0)
5360 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5361
5362 if (basic_rates) {
5363 u8 rates[NL80211_MAX_SUPP_RATES];
5364 u8 rates_len = 0;
5365 int i;
5366
5367 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5368 i++)
5369 rates[rates_len++] = basic_rates[i] / 5;
5370
5371 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5372 }
5373
5374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5375
5376 return send_and_recv_msgs(drv, msg, NULL, NULL);
5377 nla_put_failure:
5378 nlmsg_free(msg);
5379 return -ENOBUFS;
5380 }
5381
5382
5383 static int wpa_driver_nl80211_set_ap(void *priv,
5384 struct wpa_driver_ap_params *params)
5385 {
5386 struct i802_bss *bss = priv;
5387 struct wpa_driver_nl80211_data *drv = bss->drv;
5388 struct nl_msg *msg;
5389 u8 cmd = NL80211_CMD_NEW_BEACON;
5390 int ret;
5391 int beacon_set;
5392 int ifindex = if_nametoindex(bss->ifname);
5393 int num_suites;
5394 u32 suites[10];
5395 u32 ver;
5396
5397 beacon_set = bss->beacon_set;
5398
5399 msg = nlmsg_alloc();
5400 if (!msg)
5401 return -ENOMEM;
5402
5403 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
5404 beacon_set);
5405 if (beacon_set)
5406 cmd = NL80211_CMD_SET_BEACON;
5407
5408 nl80211_cmd(drv, msg, 0, cmd);
5409 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
5410 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
5411 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5412 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
5413 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
5414 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5415 params->ssid);
5416 if (params->proberesp && params->proberesp_len)
5417 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
5418 params->proberesp);
5419 switch (params->hide_ssid) {
5420 case NO_SSID_HIDING:
5421 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5422 NL80211_HIDDEN_SSID_NOT_IN_USE);
5423 break;
5424 case HIDDEN_SSID_ZERO_LEN:
5425 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5426 NL80211_HIDDEN_SSID_ZERO_LEN);
5427 break;
5428 case HIDDEN_SSID_ZERO_CONTENTS:
5429 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5430 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
5431 break;
5432 }
5433 if (params->privacy)
5434 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5435 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
5436 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
5437 /* Leave out the attribute */
5438 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
5439 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5440 NL80211_AUTHTYPE_SHARED_KEY);
5441 else
5442 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5443 NL80211_AUTHTYPE_OPEN_SYSTEM);
5444
5445 ver = 0;
5446 if (params->wpa_version & WPA_PROTO_WPA)
5447 ver |= NL80211_WPA_VERSION_1;
5448 if (params->wpa_version & WPA_PROTO_RSN)
5449 ver |= NL80211_WPA_VERSION_2;
5450 if (ver)
5451 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5452
5453 num_suites = 0;
5454 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
5455 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
5456 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
5457 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
5458 if (num_suites) {
5459 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
5460 num_suites * sizeof(u32), suites);
5461 }
5462
5463 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
5464 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
5465 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
5466
5467 num_suites = 0;
5468 if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
5469 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5470 if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
5471 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5472 if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
5473 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5474 if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
5475 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5476 if (num_suites) {
5477 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5478 num_suites * sizeof(u32), suites);
5479 }
5480
5481 switch (params->group_cipher) {
5482 case WPA_CIPHER_CCMP:
5483 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5484 WLAN_CIPHER_SUITE_CCMP);
5485 break;
5486 case WPA_CIPHER_TKIP:
5487 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5488 WLAN_CIPHER_SUITE_TKIP);
5489 break;
5490 case WPA_CIPHER_WEP104:
5491 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5492 WLAN_CIPHER_SUITE_WEP104);
5493 break;
5494 case WPA_CIPHER_WEP40:
5495 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5496 WLAN_CIPHER_SUITE_WEP40);
5497 break;
5498 }
5499
5500 if (params->beacon_ies) {
5501 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
5502 wpabuf_head(params->beacon_ies));
5503 }
5504 if (params->proberesp_ies) {
5505 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
5506 wpabuf_len(params->proberesp_ies),
5507 wpabuf_head(params->proberesp_ies));
5508 }
5509 if (params->assocresp_ies) {
5510 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
5511 wpabuf_len(params->assocresp_ies),
5512 wpabuf_head(params->assocresp_ies));
5513 }
5514
5515 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) {
5516 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
5517 params->ap_max_inactivity);
5518 }
5519
5520 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5521 if (ret) {
5522 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
5523 ret, strerror(-ret));
5524 } else {
5525 bss->beacon_set = 1;
5526 nl80211_set_bss(bss, params->cts_protect, params->preamble,
5527 params->short_slot_time, params->ht_opmode,
5528 params->isolate, params->basic_rates);
5529 }
5530 return ret;
5531 nla_put_failure:
5532 nlmsg_free(msg);
5533 return -ENOBUFS;
5534 }
5535
5536
5537 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
5538 int freq, int ht_enabled,
5539 int sec_channel_offset)
5540 {
5541 struct wpa_driver_nl80211_data *drv = bss->drv;
5542 struct nl_msg *msg;
5543 int ret;
5544
5545 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
5546 "sec_channel_offset=%d)",
5547 freq, ht_enabled, sec_channel_offset);
5548 msg = nlmsg_alloc();
5549 if (!msg)
5550 return -1;
5551
5552 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5553
5554 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5555 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5556 if (ht_enabled) {
5557 switch (sec_channel_offset) {
5558 case -1:
5559 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5560 NL80211_CHAN_HT40MINUS);
5561 break;
5562 case 1:
5563 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5564 NL80211_CHAN_HT40PLUS);
5565 break;
5566 default:
5567 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5568 NL80211_CHAN_HT20);
5569 break;
5570 }
5571 }
5572
5573 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5574 msg = NULL;
5575 if (ret == 0) {
5576 bss->freq = freq;
5577 return 0;
5578 }
5579 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
5580 "%d (%s)", freq, ret, strerror(-ret));
5581 nla_put_failure:
5582 nlmsg_free(msg);
5583 return -1;
5584 }
5585
5586
5587 static u32 sta_flags_nl80211(int flags)
5588 {
5589 u32 f = 0;
5590
5591 if (flags & WPA_STA_AUTHORIZED)
5592 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
5593 if (flags & WPA_STA_WMM)
5594 f |= BIT(NL80211_STA_FLAG_WME);
5595 if (flags & WPA_STA_SHORT_PREAMBLE)
5596 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
5597 if (flags & WPA_STA_MFP)
5598 f |= BIT(NL80211_STA_FLAG_MFP);
5599 if (flags & WPA_STA_TDLS_PEER)
5600 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
5601
5602 return f;
5603 }
5604
5605
5606 static int wpa_driver_nl80211_sta_add(void *priv,
5607 struct hostapd_sta_add_params *params)
5608 {
5609 struct i802_bss *bss = priv;
5610 struct wpa_driver_nl80211_data *drv = bss->drv;
5611 struct nl_msg *msg, *wme = NULL;
5612 struct nl80211_sta_flag_update upd;
5613 int ret = -ENOBUFS;
5614
5615 if ((params->flags & WPA_STA_TDLS_PEER) &&
5616 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
5617 return -EOPNOTSUPP;
5618
5619 msg = nlmsg_alloc();
5620 if (!msg)
5621 return -ENOMEM;
5622
5623 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
5624 NL80211_CMD_NEW_STATION);
5625
5626 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5627 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
5628 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
5629 params->supp_rates);
5630 if (!params->set) {
5631 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
5632 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
5633 params->listen_interval);
5634 }
5635 if (params->ht_capabilities) {
5636 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
5637 sizeof(*params->ht_capabilities),
5638 params->ht_capabilities);
5639 }
5640
5641 os_memset(&upd, 0, sizeof(upd));
5642 upd.mask = sta_flags_nl80211(params->flags);
5643 upd.set = upd.mask;
5644 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5645
5646 if (params->flags & WPA_STA_WMM) {
5647 wme = nlmsg_alloc();
5648 if (!wme)
5649 goto nla_put_failure;
5650
5651 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES,
5652 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
5653 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP,
5654 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) &
5655 WMM_QOSINFO_STA_SP_MASK);
5656 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0)
5657 goto nla_put_failure;
5658 }
5659
5660 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5661 msg = NULL;
5662 if (ret)
5663 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
5664 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
5665 strerror(-ret));
5666 if (ret == -EEXIST)
5667 ret = 0;
5668 nla_put_failure:
5669 nlmsg_free(wme);
5670 nlmsg_free(msg);
5671 return ret;
5672 }
5673
5674
5675 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
5676 {
5677 struct i802_bss *bss = priv;
5678 struct wpa_driver_nl80211_data *drv = bss->drv;
5679 struct nl_msg *msg;
5680 int ret;
5681
5682 msg = nlmsg_alloc();
5683 if (!msg)
5684 return -ENOMEM;
5685
5686 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5687
5688 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5689 if_nametoindex(bss->ifname));
5690 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5691
5692 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5693 if (ret == -ENOENT)
5694 return 0;
5695 return ret;
5696 nla_put_failure:
5697 nlmsg_free(msg);
5698 return -ENOBUFS;
5699 }
5700
5701
5702 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
5703 int ifidx)
5704 {
5705 struct nl_msg *msg;
5706
5707 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
5708
5709 /* stop listening for EAPOL on this interface */
5710 del_ifidx(drv, ifidx);
5711
5712 msg = nlmsg_alloc();
5713 if (!msg)
5714 goto nla_put_failure;
5715
5716 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
5717 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
5718
5719 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5720 return;
5721 msg = NULL;
5722 nla_put_failure:
5723 nlmsg_free(msg);
5724 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
5725 }
5726
5727
5728 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
5729 {
5730 switch (mode) {
5731 case NL80211_IFTYPE_ADHOC:
5732 return "ADHOC";
5733 case NL80211_IFTYPE_STATION:
5734 return "STATION";
5735 case NL80211_IFTYPE_AP:
5736 return "AP";
5737 case NL80211_IFTYPE_MONITOR:
5738 return "MONITOR";
5739 case NL80211_IFTYPE_P2P_CLIENT:
5740 return "P2P_CLIENT";
5741 case NL80211_IFTYPE_P2P_GO:
5742 return "P2P_GO";
5743 default:
5744 return "unknown";
5745 }
5746 }
5747
5748
5749 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
5750 const char *ifname,
5751 enum nl80211_iftype iftype,
5752 const u8 *addr, int wds)
5753 {
5754 struct nl_msg *msg, *flags = NULL;
5755 int ifidx;
5756 int ret = -ENOBUFS;
5757
5758 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
5759 iftype, nl80211_iftype_str(iftype));
5760
5761 msg = nlmsg_alloc();
5762 if (!msg)
5763 return -1;
5764
5765 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
5766 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5767 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
5768 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
5769
5770 if (iftype == NL80211_IFTYPE_MONITOR) {
5771 int err;
5772
5773 flags = nlmsg_alloc();
5774 if (!flags)
5775 goto nla_put_failure;
5776
5777 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
5778
5779 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
5780
5781 nlmsg_free(flags);
5782
5783 if (err)
5784 goto nla_put_failure;
5785 } else if (wds) {
5786 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
5787 }
5788
5789 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5790 msg = NULL;
5791 if (ret) {
5792 nla_put_failure:
5793 nlmsg_free(msg);
5794 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
5795 ifname, ret, strerror(-ret));
5796 return ret;
5797 }
5798
5799 ifidx = if_nametoindex(ifname);
5800 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
5801 ifname, ifidx);
5802
5803 if (ifidx <= 0)
5804 return -1;
5805
5806 /* start listening for EAPOL on this interface */
5807 add_ifidx(drv, ifidx);
5808
5809 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
5810 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
5811 nl80211_remove_iface(drv, ifidx);
5812 return -1;
5813 }
5814
5815 return ifidx;
5816 }
5817
5818
5819 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
5820 const char *ifname, enum nl80211_iftype iftype,
5821 const u8 *addr, int wds)
5822 {
5823 int ret;
5824
5825 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
5826
5827 /* if error occurred and interface exists already */
5828 if (ret == -ENFILE && if_nametoindex(ifname)) {
5829 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
5830
5831 /* Try to remove the interface that was already there. */
5832 nl80211_remove_iface(drv, if_nametoindex(ifname));
5833
5834 /* Try to create the interface again */
5835 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
5836 wds);
5837 }
5838
5839 if (ret >= 0 && is_p2p_interface(iftype))
5840 nl80211_disable_11b_rates(drv, ret, 1);
5841
5842 return ret;
5843 }
5844
5845
5846 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
5847 {
5848 struct ieee80211_hdr *hdr;
5849 u16 fc;
5850 union wpa_event_data event;
5851
5852 hdr = (struct ieee80211_hdr *) buf;
5853 fc = le_to_host16(hdr->frame_control);
5854
5855 os_memset(&event, 0, sizeof(event));
5856 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
5857 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
5858 event.tx_status.dst = hdr->addr1;
5859 event.tx_status.data = buf;
5860 event.tx_status.data_len = len;
5861 event.tx_status.ack = ok;
5862 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
5863 }
5864
5865
5866 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
5867 u8 *buf, size_t len)
5868 {
5869 struct ieee80211_hdr *hdr = (void *)buf;
5870 u16 fc;
5871 union wpa_event_data event;
5872
5873 if (len < sizeof(*hdr))
5874 return;
5875
5876 fc = le_to_host16(hdr->frame_control);
5877
5878 os_memset(&event, 0, sizeof(event));
5879 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
5880 event.rx_from_unknown.addr = hdr->addr2;
5881 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
5882 (WLAN_FC_FROMDS | WLAN_FC_TODS);
5883 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
5884 }
5885
5886
5887 static void handle_frame(struct wpa_driver_nl80211_data *drv,
5888 u8 *buf, size_t len, int datarate, int ssi_signal)
5889 {
5890 struct ieee80211_hdr *hdr;
5891 u16 fc;
5892 union wpa_event_data event;
5893
5894 hdr = (struct ieee80211_hdr *) buf;
5895 fc = le_to_host16(hdr->frame_control);
5896
5897 switch (WLAN_FC_GET_TYPE(fc)) {
5898 case WLAN_FC_TYPE_MGMT:
5899 os_memset(&event, 0, sizeof(event));
5900 event.rx_mgmt.frame = buf;
5901 event.rx_mgmt.frame_len = len;
5902 event.rx_mgmt.datarate = datarate;
5903 event.rx_mgmt.ssi_signal = ssi_signal;
5904 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
5905 break;
5906 case WLAN_FC_TYPE_CTRL:
5907 /* can only get here with PS-Poll frames */
5908 wpa_printf(MSG_DEBUG, "CTRL");
5909 from_unknown_sta(drv, buf, len);
5910 break;
5911 case WLAN_FC_TYPE_DATA:
5912 from_unknown_sta(drv, buf, len);
5913 break;
5914 }
5915 }
5916
5917
5918 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
5919 {
5920 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5921 int len;
5922 unsigned char buf[3000];
5923 struct ieee80211_radiotap_iterator iter;
5924 int ret;
5925 int datarate = 0, ssi_signal = 0;
5926 int injected = 0, failed = 0, rxflags = 0;
5927
5928 len = recv(sock, buf, sizeof(buf), 0);
5929 if (len < 0) {
5930 perror("recv");
5931 return;
5932 }
5933
5934 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
5935 printf("received invalid radiotap frame\n");
5936 return;
5937 }
5938
5939 while (1) {
5940 ret = ieee80211_radiotap_iterator_next(&iter);
5941 if (ret == -ENOENT)
5942 break;
5943 if (ret) {
5944 printf("received invalid radiotap frame (%d)\n", ret);
5945 return;
5946 }
5947 switch (iter.this_arg_index) {
5948 case IEEE80211_RADIOTAP_FLAGS:
5949 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
5950 len -= 4;
5951 break;
5952 case IEEE80211_RADIOTAP_RX_FLAGS:
5953 rxflags = 1;
5954 break;
5955 case IEEE80211_RADIOTAP_TX_FLAGS:
5956 injected = 1;
5957 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
5958 IEEE80211_RADIOTAP_F_TX_FAIL;
5959 break;
5960 case IEEE80211_RADIOTAP_DATA_RETRIES:
5961 break;
5962 case IEEE80211_RADIOTAP_CHANNEL:
5963 /* TODO: convert from freq/flags to channel number */
5964 break;
5965 case IEEE80211_RADIOTAP_RATE:
5966 datarate = *iter.this_arg * 5;
5967 break;
5968 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
5969 ssi_signal = (s8) *iter.this_arg;
5970 break;
5971 }
5972 }
5973
5974 if (rxflags && injected)
5975 return;
5976
5977 if (!injected)
5978 handle_frame(drv, buf + iter.max_length,
5979 len - iter.max_length, datarate, ssi_signal);
5980 else
5981 handle_tx_callback(drv->ctx, buf + iter.max_length,
5982 len - iter.max_length, !failed);
5983 }
5984
5985
5986 /*
5987 * we post-process the filter code later and rewrite
5988 * this to the offset to the last instruction
5989 */
5990 #define PASS 0xFF
5991 #define FAIL 0xFE
5992
5993 static struct sock_filter msock_filter_insns[] = {
5994 /*
5995 * do a little-endian load of the radiotap length field
5996 */
5997 /* load lower byte into A */
5998 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
5999 /* put it into X (== index register) */
6000 BPF_STMT(BPF_MISC| BPF_TAX, 0),
6001 /* load upper byte into A */
6002 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
6003 /* left-shift it by 8 */
6004 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
6005 /* or with X */
6006 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
6007 /* put result into X */
6008 BPF_STMT(BPF_MISC| BPF_TAX, 0),
6009
6010 /*
6011 * Allow management frames through, this also gives us those
6012 * management frames that we sent ourselves with status
6013 */
6014 /* load the lower byte of the IEEE 802.11 frame control field */
6015 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
6016 /* mask off frame type and version */
6017 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
6018 /* accept frame if it's both 0, fall through otherwise */
6019 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
6020
6021 /*
6022 * TODO: add a bit to radiotap RX flags that indicates
6023 * that the sending station is not associated, then
6024 * add a filter here that filters on our DA and that flag
6025 * to allow us to deauth frames to that bad station.
6026 *
6027 * For now allow all To DS data frames through.
6028 */
6029 /* load the IEEE 802.11 frame control field */
6030 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
6031 /* mask off frame type, version and DS status */
6032 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
6033 /* accept frame if version 0, type 2 and To DS, fall through otherwise
6034 */
6035 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
6036
6037 #if 0
6038 /*
6039 * drop non-data frames
6040 */
6041 /* load the lower byte of the frame control field */
6042 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
6043 /* mask off QoS bit */
6044 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
6045 /* drop non-data frames */
6046 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
6047 #endif
6048 /* load the upper byte of the frame control field */
6049 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
6050 /* mask off toDS/fromDS */
6051 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
6052 /* accept WDS frames */
6053 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
6054
6055 /*
6056 * add header length to index
6057 */
6058 /* load the lower byte of the frame control field */
6059 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
6060 /* mask off QoS bit */
6061 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
6062 /* right shift it by 6 to give 0 or 2 */
6063 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
6064 /* add data frame header length */
6065 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
6066 /* add index, was start of 802.11 header */
6067 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
6068 /* move to index, now start of LL header */
6069 BPF_STMT(BPF_MISC | BPF_TAX, 0),
6070
6071 /*
6072 * Accept empty data frames, we use those for
6073 * polling activity.
6074 */
6075 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
6076 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
6077
6078 /*
6079 * Accept EAPOL frames
6080 */
6081 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
6082 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
6083 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
6084 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
6085
6086 /* keep these last two statements or change the code below */
6087 /* return 0 == "DROP" */
6088 BPF_STMT(BPF_RET | BPF_K, 0),
6089 /* return ~0 == "keep all" */
6090 BPF_STMT(BPF_RET | BPF_K, ~0),
6091 };
6092
6093 static struct sock_fprog msock_filter = {
6094 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
6095 .filter = msock_filter_insns,
6096 };
6097
6098
6099 static int add_monitor_filter(int s)
6100 {
6101 int idx;
6102
6103 /* rewrite all PASS/FAIL jump offsets */
6104 for (idx = 0; idx < msock_filter.len; idx++) {
6105 struct sock_filter *insn = &msock_filter_insns[idx];
6106
6107 if (BPF_CLASS(insn->code) == BPF_JMP) {
6108 if (insn->code == (BPF_JMP|BPF_JA)) {
6109 if (insn->k == PASS)
6110 insn->k = msock_filter.len - idx - 2;
6111 else if (insn->k == FAIL)
6112 insn->k = msock_filter.len - idx - 3;
6113 }
6114
6115 if (insn->jt == PASS)
6116 insn->jt = msock_filter.len - idx - 2;
6117 else if (insn->jt == FAIL)
6118 insn->jt = msock_filter.len - idx - 3;
6119
6120 if (insn->jf == PASS)
6121 insn->jf = msock_filter.len - idx - 2;
6122 else if (insn->jf == FAIL)
6123 insn->jf = msock_filter.len - idx - 3;
6124 }
6125 }
6126
6127 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
6128 &msock_filter, sizeof(msock_filter))) {
6129 perror("SO_ATTACH_FILTER");
6130 return -1;
6131 }
6132
6133 return 0;
6134 }
6135
6136
6137 static void nl80211_remove_monitor_interface(
6138 struct wpa_driver_nl80211_data *drv)
6139 {
6140 drv->monitor_refcount--;
6141 if (drv->monitor_refcount > 0)
6142 return;
6143
6144 if (drv->monitor_ifidx >= 0) {
6145 nl80211_remove_iface(drv, drv->monitor_ifidx);
6146 drv->monitor_ifidx = -1;
6147 }
6148 if (drv->monitor_sock >= 0) {
6149 eloop_unregister_read_sock(drv->monitor_sock);
6150 close(drv->monitor_sock);
6151 drv->monitor_sock = -1;
6152 }
6153 }
6154
6155
6156 static int
6157 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
6158 {
6159 char buf[IFNAMSIZ];
6160 struct sockaddr_ll ll;
6161 int optval;
6162 socklen_t optlen;
6163
6164 if (drv->monitor_ifidx >= 0) {
6165 drv->monitor_refcount++;
6166 return 0;
6167 }
6168
6169 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
6170 /*
6171 * P2P interface name is of the format p2p-%s-%d. For monitor
6172 * interface name corresponding to P2P GO, replace "p2p-" with
6173 * "mon-" to retain the same interface name length and to
6174 * indicate that it is a monitor interface.
6175 */
6176 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
6177 } else {
6178 /* Non-P2P interface with AP functionality. */
6179 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
6180 }
6181
6182 buf[IFNAMSIZ - 1] = '\0';
6183
6184 drv->monitor_ifidx =
6185 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
6186 0);
6187
6188 if (drv->monitor_ifidx == -EOPNOTSUPP) {
6189 /*
6190 * This is backward compatibility for a few versions of
6191 * the kernel only that didn't advertise the right
6192 * attributes for the only driver that then supported
6193 * AP mode w/o monitor -- ath6kl.
6194 */
6195 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
6196 "monitor interface type - try to run without it");
6197 drv->device_ap_sme = 1;
6198 }
6199
6200 if (drv->monitor_ifidx < 0)
6201 return -1;
6202
6203 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
6204 goto error;
6205
6206 memset(&ll, 0, sizeof(ll));
6207 ll.sll_family = AF_PACKET;
6208 ll.sll_ifindex = drv->monitor_ifidx;
6209 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
6210 if (drv->monitor_sock < 0) {
6211 perror("socket[PF_PACKET,SOCK_RAW]");
6212 goto error;
6213 }
6214
6215 if (add_monitor_filter(drv->monitor_sock)) {
6216 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
6217 "interface; do filtering in user space");
6218 /* This works, but will cost in performance. */
6219 }
6220
6221 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
6222 perror("monitor socket bind");
6223 goto error;
6224 }
6225
6226 optlen = sizeof(optval);
6227 optval = 20;
6228 if (setsockopt
6229 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
6230 perror("Failed to set socket priority");
6231 goto error;
6232 }
6233
6234 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
6235 drv, NULL)) {
6236 printf("Could not register monitor read socket\n");
6237 goto error;
6238 }
6239
6240 return 0;
6241 error:
6242 nl80211_remove_monitor_interface(drv);
6243 return -1;
6244 }
6245
6246
6247 static int nl80211_setup_ap(struct i802_bss *bss)
6248 {
6249 struct wpa_driver_nl80211_data *drv = bss->drv;
6250
6251 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d "
6252 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor);
6253
6254 /*
6255 * Disable Probe Request reporting unless we need it in this way for
6256 * devices that include the AP SME, in the other case (unless using
6257 * monitor iface) we'll get it through the nl_mgmt socket instead.
6258 */
6259 if (!drv->device_ap_sme)
6260 wpa_driver_nl80211_probe_req_report(bss, 0);
6261
6262 if (!drv->device_ap_sme && !drv->use_monitor)
6263 if (nl80211_mgmt_subscribe_ap(bss))
6264 return -1;
6265
6266 if (drv->device_ap_sme && !drv->use_monitor)
6267 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
6268 return -1;
6269
6270 if (!drv->device_ap_sme && drv->use_monitor &&
6271 nl80211_create_monitor_interface(drv) &&
6272 !drv->device_ap_sme)
6273 return -1;
6274
6275 if (drv->device_ap_sme &&
6276 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
6277 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
6278 "Probe Request frame reporting in AP mode");
6279 /* Try to survive without this */
6280 }
6281
6282 return 0;
6283 }
6284
6285
6286 static void nl80211_teardown_ap(struct i802_bss *bss)
6287 {
6288 struct wpa_driver_nl80211_data *drv = bss->drv;
6289
6290 if (drv->device_ap_sme) {
6291 wpa_driver_nl80211_probe_req_report(bss, 0);
6292 if (!drv->use_monitor)
6293 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
6294 } else if (drv->use_monitor)
6295 nl80211_remove_monitor_interface(drv);
6296 else
6297 nl80211_mgmt_unsubscribe(bss, "AP teardown");
6298
6299 bss->beacon_set = 0;
6300 }
6301
6302
6303 static int nl80211_send_eapol_data(struct i802_bss *bss,
6304 const u8 *addr, const u8 *data,
6305 size_t data_len)
6306 {
6307 struct sockaddr_ll ll;
6308 int ret;
6309
6310 if (bss->drv->eapol_tx_sock < 0) {
6311 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
6312 return -1;
6313 }
6314
6315 os_memset(&ll, 0, sizeof(ll));
6316 ll.sll_family = AF_PACKET;
6317 ll.sll_ifindex = bss->ifindex;
6318 ll.sll_protocol = htons(ETH_P_PAE);
6319 ll.sll_halen = ETH_ALEN;
6320 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
6321 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
6322 (struct sockaddr *) &ll, sizeof(ll));
6323 if (ret < 0)
6324 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
6325 strerror(errno));
6326
6327 return ret;
6328 }
6329
6330
6331 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
6332
6333 static int wpa_driver_nl80211_hapd_send_eapol(
6334 void *priv, const u8 *addr, const u8 *data,
6335 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
6336 {
6337 struct i802_bss *bss = priv;
6338 struct wpa_driver_nl80211_data *drv = bss->drv;
6339 struct ieee80211_hdr *hdr;
6340 size_t len;
6341 u8 *pos;
6342 int res;
6343 int qos = flags & WPA_STA_WMM;
6344
6345 if (drv->device_ap_sme || !drv->use_monitor)
6346 return nl80211_send_eapol_data(bss, addr, data, data_len);
6347
6348 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
6349 data_len;
6350 hdr = os_zalloc(len);
6351 if (hdr == NULL) {
6352 printf("malloc() failed for i802_send_data(len=%lu)\n",
6353 (unsigned long) len);
6354 return -1;
6355 }
6356
6357 hdr->frame_control =
6358 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
6359 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
6360 if (encrypt)
6361 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
6362 if (qos) {
6363 hdr->frame_control |=
6364 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
6365 }
6366
6367 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6368 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6369 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6370 pos = (u8 *) (hdr + 1);
6371
6372 if (qos) {
6373 /* add an empty QoS header if needed */
6374 pos[0] = 0;
6375 pos[1] = 0;
6376 pos += 2;
6377 }
6378
6379 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
6380 pos += sizeof(rfc1042_header);
6381 WPA_PUT_BE16(pos, ETH_P_PAE);
6382 pos += 2;
6383 memcpy(pos, data, data_len);
6384
6385 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
6386 0, 0, 0, 0);
6387 if (res < 0) {
6388 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
6389 "failed: %d (%s)",
6390 (unsigned long) len, errno, strerror(errno));
6391 }
6392 os_free(hdr);
6393
6394 return res;
6395 }
6396
6397
6398 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
6399 int total_flags,
6400 int flags_or, int flags_and)
6401 {
6402 struct i802_bss *bss = priv;
6403 struct wpa_driver_nl80211_data *drv = bss->drv;
6404 struct nl_msg *msg, *flags = NULL;
6405 struct nl80211_sta_flag_update upd;
6406
6407 msg = nlmsg_alloc();
6408 if (!msg)
6409 return -ENOMEM;
6410
6411 flags = nlmsg_alloc();
6412 if (!flags) {
6413 nlmsg_free(msg);
6414 return -ENOMEM;
6415 }
6416
6417 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6418
6419 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6420 if_nametoindex(bss->ifname));
6421 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6422
6423 /*
6424 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
6425 * can be removed eventually.
6426 */
6427 if (total_flags & WPA_STA_AUTHORIZED)
6428 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
6429
6430 if (total_flags & WPA_STA_WMM)
6431 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
6432
6433 if (total_flags & WPA_STA_SHORT_PREAMBLE)
6434 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
6435
6436 if (total_flags & WPA_STA_MFP)
6437 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
6438
6439 if (total_flags & WPA_STA_TDLS_PEER)
6440 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
6441
6442 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
6443 goto nla_put_failure;
6444
6445 os_memset(&upd, 0, sizeof(upd));
6446 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
6447 upd.set = sta_flags_nl80211(flags_or);
6448 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6449
6450 nlmsg_free(flags);
6451
6452 return send_and_recv_msgs(drv, msg, NULL, NULL);
6453 nla_put_failure:
6454 nlmsg_free(msg);
6455 nlmsg_free(flags);
6456 return -ENOBUFS;
6457 }
6458
6459
6460 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
6461 struct wpa_driver_associate_params *params)
6462 {
6463 enum nl80211_iftype nlmode;
6464
6465 if (params->p2p) {
6466 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
6467 "group (GO)");
6468 nlmode = NL80211_IFTYPE_P2P_GO;
6469 } else
6470 nlmode = NL80211_IFTYPE_AP;
6471
6472 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
6473 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
6474 nl80211_remove_monitor_interface(drv);
6475 return -1;
6476 }
6477
6478 return 0;
6479 }
6480
6481
6482 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
6483 {
6484 struct nl_msg *msg;
6485 int ret = -1;
6486
6487 msg = nlmsg_alloc();
6488 if (!msg)
6489 return -1;
6490
6491 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
6492 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6493 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6494 msg = NULL;
6495 if (ret) {
6496 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
6497 "(%s)", ret, strerror(-ret));
6498 goto nla_put_failure;
6499 }
6500
6501 ret = 0;
6502 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
6503
6504 nla_put_failure:
6505 nlmsg_free(msg);
6506 return ret;
6507 }
6508
6509
6510 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
6511 struct wpa_driver_associate_params *params)
6512 {
6513 struct nl_msg *msg;
6514 int ret = -1;
6515 int count = 0;
6516
6517 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
6518
6519 if (wpa_driver_nl80211_set_mode(&drv->first_bss,
6520 NL80211_IFTYPE_ADHOC)) {
6521 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
6522 "IBSS mode");
6523 return -1;
6524 }
6525
6526 retry:
6527 msg = nlmsg_alloc();
6528 if (!msg)
6529 return -1;
6530
6531 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
6532 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6533
6534 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
6535 goto nla_put_failure;
6536
6537 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6538 params->ssid, params->ssid_len);
6539 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6540 params->ssid);
6541 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6542 drv->ssid_len = params->ssid_len;
6543
6544 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6545 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6546
6547 ret = nl80211_set_conn_keys(params, msg);
6548 if (ret)
6549 goto nla_put_failure;
6550
6551 if (params->bssid && params->fixed_bssid) {
6552 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR,
6553 MAC2STR(params->bssid));
6554 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6555 }
6556
6557 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6558 params->key_mgmt_suite == KEY_MGMT_PSK ||
6559 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 ||
6560 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) {
6561 wpa_printf(MSG_DEBUG, " * control port");
6562 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6563 }
6564
6565 if (params->wpa_ie) {
6566 wpa_hexdump(MSG_DEBUG,
6567 " * Extra IEs for Beacon/Probe Response frames",
6568 params->wpa_ie, params->wpa_ie_len);
6569 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6570 params->wpa_ie);
6571 }
6572
6573 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6574 msg = NULL;
6575 if (ret) {
6576 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
6577 ret, strerror(-ret));
6578 count++;
6579 if (ret == -EALREADY && count == 1) {
6580 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
6581 "forced leave");
6582 nl80211_leave_ibss(drv);
6583 nlmsg_free(msg);
6584 goto retry;
6585 }
6586
6587 goto nla_put_failure;
6588 }
6589 ret = 0;
6590 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
6591
6592 nla_put_failure:
6593 nlmsg_free(msg);
6594 return ret;
6595 }
6596
6597
6598 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
6599 u8 *bssid)
6600 {
6601 struct nl_msg *msg;
6602 int ret;
6603 struct nl80211_bss_info_arg arg;
6604
6605 os_memset(&arg, 0, sizeof(arg));
6606 msg = nlmsg_alloc();
6607 if (!msg)
6608 goto nla_put_failure;
6609
6610 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
6611 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6612
6613 arg.drv = drv;
6614 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
6615 msg = NULL;
6616 if (ret == 0) {
6617 if (is_zero_ether_addr(arg.assoc_bssid))
6618 return -ENOTCONN;
6619 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
6620 return 0;
6621 }
6622 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
6623 "(%s)", ret, strerror(-ret));
6624 nla_put_failure:
6625 nlmsg_free(msg);
6626 return drv->assoc_freq;
6627 }
6628
6629
6630 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
6631 const u8 *bssid)
6632 {
6633 u8 addr[ETH_ALEN];
6634
6635 if (bssid == NULL) {
6636 int res = nl80211_get_assoc_bssid(drv, addr);
6637 if (res)
6638 return res;
6639 bssid = addr;
6640 }
6641
6642 return wpa_driver_nl80211_disconnect(drv, bssid,
6643 WLAN_REASON_PREV_AUTH_NOT_VALID);
6644 }
6645
6646
6647 static int wpa_driver_nl80211_connect(
6648 struct wpa_driver_nl80211_data *drv,
6649 struct wpa_driver_associate_params *params)
6650 {
6651 struct nl_msg *msg;
6652 enum nl80211_auth_type type;
6653 int ret = 0;
6654 int algs;
6655
6656 msg = nlmsg_alloc();
6657 if (!msg)
6658 return -1;
6659
6660 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
6661 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
6662
6663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6664 if (params->bssid) {
6665 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6666 MAC2STR(params->bssid));
6667 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6668 }
6669 if (params->freq) {
6670 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6671 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6672 }
6673 if (params->bg_scan_period >= 0) {
6674 wpa_printf(MSG_DEBUG, " * bg scan period=%d",
6675 params->bg_scan_period);
6676 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6677 params->bg_scan_period);
6678 }
6679 if (params->ssid) {
6680 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6681 params->ssid, params->ssid_len);
6682 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6683 params->ssid);
6684 if (params->ssid_len > sizeof(drv->ssid))
6685 goto nla_put_failure;
6686 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6687 drv->ssid_len = params->ssid_len;
6688 }
6689 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6690 if (params->wpa_ie)
6691 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6692 params->wpa_ie);
6693
6694 algs = 0;
6695 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6696 algs++;
6697 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6698 algs++;
6699 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6700 algs++;
6701 if (algs > 1) {
6702 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
6703 "selection");
6704 goto skip_auth_type;
6705 }
6706
6707 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6708 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
6709 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6710 type = NL80211_AUTHTYPE_SHARED_KEY;
6711 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6712 type = NL80211_AUTHTYPE_NETWORK_EAP;
6713 else if (params->auth_alg & WPA_AUTH_ALG_FT)
6714 type = NL80211_AUTHTYPE_FT;
6715 else
6716 goto nla_put_failure;
6717
6718 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
6719 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
6720
6721 skip_auth_type:
6722 if (params->wpa_proto) {
6723 enum nl80211_wpa_versions ver = 0;
6724
6725 if (params->wpa_proto & WPA_PROTO_WPA)
6726 ver |= NL80211_WPA_VERSION_1;
6727 if (params->wpa_proto & WPA_PROTO_RSN)
6728 ver |= NL80211_WPA_VERSION_2;
6729
6730 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
6731 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6732 }
6733
6734 if (params->pairwise_suite != CIPHER_NONE) {
6735 int cipher;
6736
6737 switch (params->pairwise_suite) {
6738 case CIPHER_WEP40:
6739 cipher = WLAN_CIPHER_SUITE_WEP40;
6740 break;
6741 case CIPHER_WEP104:
6742 cipher = WLAN_CIPHER_SUITE_WEP104;
6743 break;
6744 case CIPHER_CCMP:
6745 cipher = WLAN_CIPHER_SUITE_CCMP;
6746 break;
6747 case CIPHER_TKIP:
6748 default:
6749 cipher = WLAN_CIPHER_SUITE_TKIP;
6750 break;
6751 }
6752 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6753 }
6754
6755 if (params->group_suite != CIPHER_NONE) {
6756 int cipher;
6757
6758 switch (params->group_suite) {
6759 case CIPHER_WEP40:
6760 cipher = WLAN_CIPHER_SUITE_WEP40;
6761 break;
6762 case CIPHER_WEP104:
6763 cipher = WLAN_CIPHER_SUITE_WEP104;
6764 break;
6765 case CIPHER_CCMP:
6766 cipher = WLAN_CIPHER_SUITE_CCMP;
6767 break;
6768 case CIPHER_TKIP:
6769 default:
6770 cipher = WLAN_CIPHER_SUITE_TKIP;
6771 break;
6772 }
6773 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6774 }
6775
6776 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6777 params->key_mgmt_suite == KEY_MGMT_PSK) {
6778 int mgmt = WLAN_AKM_SUITE_PSK;
6779
6780 switch (params->key_mgmt_suite) {
6781 case KEY_MGMT_802_1X:
6782 mgmt = WLAN_AKM_SUITE_8021X;
6783 break;
6784 case KEY_MGMT_PSK:
6785 default:
6786 mgmt = WLAN_AKM_SUITE_PSK;
6787 break;
6788 }
6789 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
6790 }
6791
6792 if (params->disable_ht)
6793 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6794
6795 if (params->htcaps && params->htcaps_mask) {
6796 int sz = sizeof(struct ieee80211_ht_capabilities);
6797 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6798 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6799 params->htcaps_mask);
6800 }
6801
6802 ret = nl80211_set_conn_keys(params, msg);
6803 if (ret)
6804 goto nla_put_failure;
6805
6806 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6807 msg = NULL;
6808 if (ret) {
6809 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
6810 "(%s)", ret, strerror(-ret));
6811 /*
6812 * cfg80211 does not currently accept new connection if we are
6813 * already connected. As a workaround, force disconnection and
6814 * try again once the driver indicates it completed
6815 * disconnection.
6816 */
6817 if (ret == -EALREADY)
6818 nl80211_disconnect(drv, params->bssid);
6819 goto nla_put_failure;
6820 }
6821 ret = 0;
6822 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
6823
6824 nla_put_failure:
6825 nlmsg_free(msg);
6826 return ret;
6827
6828 }
6829
6830
6831 static int wpa_driver_nl80211_associate(
6832 void *priv, struct wpa_driver_associate_params *params)
6833 {
6834 struct i802_bss *bss = priv;
6835 struct wpa_driver_nl80211_data *drv = bss->drv;
6836 int ret = -1;
6837 struct nl_msg *msg;
6838
6839 if (params->mode == IEEE80211_MODE_AP)
6840 return wpa_driver_nl80211_ap(drv, params);
6841
6842 if (params->mode == IEEE80211_MODE_IBSS)
6843 return wpa_driver_nl80211_ibss(drv, params);
6844
6845 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
6846 enum nl80211_iftype nlmode = params->p2p ?
6847 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
6848
6849 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
6850 return -1;
6851 return wpa_driver_nl80211_connect(drv, params);
6852 }
6853
6854 drv->associated = 0;
6855
6856 msg = nlmsg_alloc();
6857 if (!msg)
6858 return -1;
6859
6860 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
6861 drv->ifindex);
6862 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
6863
6864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6865 if (params->bssid) {
6866 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6867 MAC2STR(params->bssid));
6868 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6869 }
6870 if (params->freq) {
6871 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6872 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6873 drv->assoc_freq = params->freq;
6874 } else
6875 drv->assoc_freq = 0;
6876 if (params->bg_scan_period >= 0) {
6877 wpa_printf(MSG_DEBUG, " * bg scan period=%d",
6878 params->bg_scan_period);
6879 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6880 params->bg_scan_period);
6881 }
6882 if (params->ssid) {
6883 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6884 params->ssid, params->ssid_len);
6885 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6886 params->ssid);
6887 if (params->ssid_len > sizeof(drv->ssid))
6888 goto nla_put_failure;
6889 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6890 drv->ssid_len = params->ssid_len;
6891 }
6892 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6893 if (params->wpa_ie)
6894 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6895 params->wpa_ie);
6896
6897 if (params->pairwise_suite != CIPHER_NONE) {
6898 int cipher;
6899
6900 switch (params->pairwise_suite) {
6901 case CIPHER_WEP40:
6902 cipher = WLAN_CIPHER_SUITE_WEP40;
6903 break;
6904 case CIPHER_WEP104:
6905 cipher = WLAN_CIPHER_SUITE_WEP104;
6906 break;
6907 case CIPHER_CCMP:
6908 cipher = WLAN_CIPHER_SUITE_CCMP;
6909 break;
6910 case CIPHER_TKIP:
6911 default:
6912 cipher = WLAN_CIPHER_SUITE_TKIP;
6913 break;
6914 }
6915 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
6916 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6917 }
6918
6919 if (params->group_suite != CIPHER_NONE) {
6920 int cipher;
6921
6922 switch (params->group_suite) {
6923 case CIPHER_WEP40:
6924 cipher = WLAN_CIPHER_SUITE_WEP40;
6925 break;
6926 case CIPHER_WEP104:
6927 cipher = WLAN_CIPHER_SUITE_WEP104;
6928 break;
6929 case CIPHER_CCMP:
6930 cipher = WLAN_CIPHER_SUITE_CCMP;
6931 break;
6932 case CIPHER_TKIP:
6933 default:
6934 cipher = WLAN_CIPHER_SUITE_TKIP;
6935 break;
6936 }
6937 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
6938 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6939 }
6940
6941 #ifdef CONFIG_IEEE80211W
6942 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
6943 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
6944 #endif /* CONFIG_IEEE80211W */
6945
6946 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6947
6948 if (params->prev_bssid) {
6949 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
6950 MAC2STR(params->prev_bssid));
6951 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
6952 params->prev_bssid);
6953 }
6954
6955 if (params->disable_ht)
6956 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6957
6958 if (params->htcaps && params->htcaps_mask) {
6959 int sz = sizeof(struct ieee80211_ht_capabilities);
6960 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6961 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6962 params->htcaps_mask);
6963 }
6964
6965 if (params->p2p)
6966 wpa_printf(MSG_DEBUG, " * P2P group");
6967
6968 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6969 msg = NULL;
6970 if (ret) {
6971 wpa_dbg(drv->ctx, MSG_DEBUG,
6972 "nl80211: MLME command failed (assoc): ret=%d (%s)",
6973 ret, strerror(-ret));
6974 nl80211_dump_scan(drv);
6975 goto nla_put_failure;
6976 }
6977 ret = 0;
6978 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
6979 "successfully");
6980
6981 nla_put_failure:
6982 nlmsg_free(msg);
6983 return ret;
6984 }
6985
6986
6987 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
6988 int ifindex, enum nl80211_iftype mode)
6989 {
6990 struct nl_msg *msg;
6991 int ret = -ENOBUFS;
6992
6993 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
6994 ifindex, mode, nl80211_iftype_str(mode));
6995
6996 msg = nlmsg_alloc();
6997 if (!msg)
6998 return -ENOMEM;
6999
7000 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
7001 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7002 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
7003
7004 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7005 msg = NULL;
7006 if (!ret)
7007 return 0;
7008 nla_put_failure:
7009 nlmsg_free(msg);
7010 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
7011 " %d (%s)", ifindex, mode, ret, strerror(-ret));
7012 return ret;
7013 }
7014
7015
7016 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
7017 enum nl80211_iftype nlmode)
7018 {
7019 struct wpa_driver_nl80211_data *drv = bss->drv;
7020 int ret = -1;
7021 int i;
7022 int was_ap = is_ap_interface(drv->nlmode);
7023 int res;
7024
7025 res = nl80211_set_mode(drv, drv->ifindex, nlmode);
7026 if (res == 0) {
7027 drv->nlmode = nlmode;
7028 ret = 0;
7029 goto done;
7030 }
7031
7032 if (res == -ENODEV)
7033 return -1;
7034
7035 if (nlmode == drv->nlmode) {
7036 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
7037 "requested mode - ignore error");
7038 ret = 0;
7039 goto done; /* Already in the requested mode */
7040 }
7041
7042 /* mac80211 doesn't allow mode changes while the device is up, so
7043 * take the device down, try to set the mode again, and bring the
7044 * device back up.
7045 */
7046 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
7047 "interface down");
7048 for (i = 0; i < 10; i++) {
7049 res = linux_set_iface_flags(drv->global->ioctl_sock,
7050 bss->ifname, 0);
7051 if (res == -EACCES || res == -ENODEV)
7052 break;
7053 if (res == 0) {
7054 /* Try to set the mode again while the interface is
7055 * down */
7056 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
7057 if (ret == -EACCES)
7058 break;
7059 res = linux_set_iface_flags(drv->global->ioctl_sock,
7060 bss->ifname, 1);
7061 if (res && !ret)
7062 ret = -1;
7063 else if (ret != -EBUSY)
7064 break;
7065 } else
7066 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
7067 "interface down");
7068 os_sleep(0, 100000);
7069 }
7070
7071 if (!ret) {
7072 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
7073 "interface is down");
7074 drv->nlmode = nlmode;
7075 drv->ignore_if_down_event = 1;
7076 }
7077
7078 done:
7079 if (ret) {
7080 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
7081 "from %d failed", nlmode, drv->nlmode);
7082 return ret;
7083 }
7084
7085 if (is_p2p_interface(nlmode))
7086 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
7087 else if (drv->disabled_11b_rates)
7088 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
7089
7090 if (is_ap_interface(nlmode)) {
7091 nl80211_mgmt_unsubscribe(bss, "start AP");
7092 /* Setup additional AP mode functionality if needed */
7093 if (nl80211_setup_ap(bss))
7094 return -1;
7095 } else if (was_ap) {
7096 /* Remove additional AP mode functionality */
7097 nl80211_teardown_ap(bss);
7098 } else {
7099 nl80211_mgmt_unsubscribe(bss, "mode change");
7100 }
7101
7102 if (!bss->in_deinit && !is_ap_interface(nlmode) &&
7103 nl80211_mgmt_subscribe_non_ap(bss) < 0)
7104 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
7105 "frame processing - ignore for now");
7106
7107 return 0;
7108 }
7109
7110
7111 static int wpa_driver_nl80211_get_capa(void *priv,
7112 struct wpa_driver_capa *capa)
7113 {
7114 struct i802_bss *bss = priv;
7115 struct wpa_driver_nl80211_data *drv = bss->drv;
7116 if (!drv->has_capability)
7117 return -1;
7118 os_memcpy(capa, &drv->capa, sizeof(*capa));
7119 return 0;
7120 }
7121
7122
7123 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
7124 {
7125 struct i802_bss *bss = priv;
7126 struct wpa_driver_nl80211_data *drv = bss->drv;
7127
7128 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
7129 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
7130 drv->operstate = state;
7131 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
7132 state ? IF_OPER_UP : IF_OPER_DORMANT);
7133 }
7134
7135
7136 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
7137 {
7138 struct i802_bss *bss = priv;
7139 struct wpa_driver_nl80211_data *drv = bss->drv;
7140 struct nl_msg *msg;
7141 struct nl80211_sta_flag_update upd;
7142
7143 msg = nlmsg_alloc();
7144 if (!msg)
7145 return -ENOMEM;
7146
7147 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7148
7149 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7150 if_nametoindex(bss->ifname));
7151 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
7152
7153 os_memset(&upd, 0, sizeof(upd));
7154 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
7155 if (authorized)
7156 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
7157 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7158
7159 return send_and_recv_msgs(drv, msg, NULL, NULL);
7160 nla_put_failure:
7161 nlmsg_free(msg);
7162 return -ENOBUFS;
7163 }
7164
7165
7166 /* Set kernel driver on given frequency (MHz) */
7167 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
7168 {
7169 struct i802_bss *bss = priv;
7170 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
7171 freq->sec_channel_offset);
7172 }
7173
7174
7175 #if defined(HOSTAPD) || defined(CONFIG_AP)
7176
7177 static inline int min_int(int a, int b)
7178 {
7179 if (a < b)
7180 return a;
7181 return b;
7182 }
7183
7184
7185 static int get_key_handler(struct nl_msg *msg, void *arg)
7186 {
7187 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7188 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7189
7190 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7191 genlmsg_attrlen(gnlh, 0), NULL);
7192
7193 /*
7194 * TODO: validate the key index and mac address!
7195 * Otherwise, there's a race condition as soon as
7196 * the kernel starts sending key notifications.
7197 */
7198
7199 if (tb[NL80211_ATTR_KEY_SEQ])
7200 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
7201 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
7202 return NL_SKIP;
7203 }
7204
7205
7206 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
7207 int idx, u8 *seq)
7208 {
7209 struct i802_bss *bss = priv;
7210 struct wpa_driver_nl80211_data *drv = bss->drv;
7211 struct nl_msg *msg;
7212
7213 msg = nlmsg_alloc();
7214 if (!msg)
7215 return -ENOMEM;
7216
7217 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
7218
7219 if (addr)
7220 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7221 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
7222 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
7223
7224 memset(seq, 0, 6);
7225
7226 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
7227 nla_put_failure:
7228 nlmsg_free(msg);
7229 return -ENOBUFS;
7230 }
7231
7232
7233 static int i802_set_rts(void *priv, int rts)
7234 {
7235 struct i802_bss *bss = priv;
7236 struct wpa_driver_nl80211_data *drv = bss->drv;
7237 struct nl_msg *msg;
7238 int ret = -ENOBUFS;
7239 u32 val;
7240
7241 msg = nlmsg_alloc();
7242 if (!msg)
7243 return -ENOMEM;
7244
7245 if (rts >= 2347)
7246 val = (u32) -1;
7247 else
7248 val = rts;
7249
7250 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7251 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7252 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
7253
7254 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7255 msg = NULL;
7256 if (!ret)
7257 return 0;
7258 nla_put_failure:
7259 nlmsg_free(msg);
7260 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
7261 "%d (%s)", rts, ret, strerror(-ret));
7262 return ret;
7263 }
7264
7265
7266 static int i802_set_frag(void *priv, int frag)
7267 {
7268 struct i802_bss *bss = priv;
7269 struct wpa_driver_nl80211_data *drv = bss->drv;
7270 struct nl_msg *msg;
7271 int ret = -ENOBUFS;
7272 u32 val;
7273
7274 msg = nlmsg_alloc();
7275 if (!msg)
7276 return -ENOMEM;
7277
7278 if (frag >= 2346)
7279 val = (u32) -1;
7280 else
7281 val = frag;
7282
7283 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7284 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7285 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
7286
7287 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7288 msg = NULL;
7289 if (!ret)
7290 return 0;
7291 nla_put_failure:
7292 nlmsg_free(msg);
7293 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
7294 "%d: %d (%s)", frag, ret, strerror(-ret));
7295 return ret;
7296 }
7297
7298
7299 static int i802_flush(void *priv)
7300 {
7301 struct i802_bss *bss = priv;
7302 struct wpa_driver_nl80211_data *drv = bss->drv;
7303 struct nl_msg *msg;
7304 int res;
7305
7306 msg = nlmsg_alloc();
7307 if (!msg)
7308 return -1;
7309
7310 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7311
7312 /*
7313 * XXX: FIX! this needs to flush all VLANs too
7314 */
7315 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7316 if_nametoindex(bss->ifname));
7317
7318 res = send_and_recv_msgs(drv, msg, NULL, NULL);
7319 if (res) {
7320 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
7321 "(%s)", res, strerror(-res));
7322 }
7323 return res;
7324 nla_put_failure:
7325 nlmsg_free(msg);
7326 return -ENOBUFS;
7327 }
7328
7329
7330 static int get_sta_handler(struct nl_msg *msg, void *arg)
7331 {
7332 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7333 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7334 struct hostap_sta_driver_data *data = arg;
7335 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
7336 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
7337 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
7338 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
7339 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
7340 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
7341 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
7342 };
7343
7344 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7345 genlmsg_attrlen(gnlh, 0), NULL);
7346
7347 /*
7348 * TODO: validate the interface and mac address!
7349 * Otherwise, there's a race condition as soon as
7350 * the kernel starts sending station notifications.
7351 */
7352
7353 if (!tb[NL80211_ATTR_STA_INFO]) {
7354 wpa_printf(MSG_DEBUG, "sta stats missing!");
7355 return NL_SKIP;
7356 }
7357 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
7358 tb[NL80211_ATTR_STA_INFO],
7359 stats_policy)) {
7360 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
7361 return NL_SKIP;
7362 }
7363
7364 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
7365 data->inactive_msec =
7366 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
7367 if (stats[NL80211_STA_INFO_RX_BYTES])
7368 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
7369 if (stats[NL80211_STA_INFO_TX_BYTES])
7370 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
7371 if (stats[NL80211_STA_INFO_RX_PACKETS])
7372 data->rx_packets =
7373 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
7374 if (stats[NL80211_STA_INFO_TX_PACKETS])
7375 data->tx_packets =
7376 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
7377
7378 return NL_SKIP;
7379 }
7380
7381 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
7382 const u8 *addr)
7383 {
7384 struct i802_bss *bss = priv;
7385 struct wpa_driver_nl80211_data *drv = bss->drv;
7386 struct nl_msg *msg;
7387
7388 os_memset(data, 0, sizeof(*data));
7389 msg = nlmsg_alloc();
7390 if (!msg)
7391 return -ENOMEM;
7392
7393 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
7394
7395 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7396 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7397
7398 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
7399 nla_put_failure:
7400 nlmsg_free(msg);
7401 return -ENOBUFS;
7402 }
7403
7404
7405 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
7406 int cw_min, int cw_max, int burst_time)
7407 {
7408 struct i802_bss *bss = priv;
7409 struct wpa_driver_nl80211_data *drv = bss->drv;
7410 struct nl_msg *msg;
7411 struct nlattr *txq, *params;
7412
7413 msg = nlmsg_alloc();
7414 if (!msg)
7415 return -1;
7416
7417 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7418
7419 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7420
7421 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
7422 if (!txq)
7423 goto nla_put_failure;
7424
7425 /* We are only sending parameters for a single TXQ at a time */
7426 params = nla_nest_start(msg, 1);
7427 if (!params)
7428 goto nla_put_failure;
7429
7430 switch (queue) {
7431 case 0:
7432 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
7433 break;
7434 case 1:
7435 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
7436 break;
7437 case 2:
7438 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
7439 break;
7440 case 3:
7441 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
7442 break;
7443 }
7444 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
7445 * 32 usec, so need to convert the value here. */
7446 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
7447 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
7448 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
7449 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
7450
7451 nla_nest_end(msg, params);
7452
7453 nla_nest_end(msg, txq);
7454
7455 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7456 return 0;
7457 msg = NULL;
7458 nla_put_failure:
7459 nlmsg_free(msg);
7460 return -1;
7461 }
7462
7463
7464 static int i802_set_sta_vlan(void *priv, const u8 *addr,
7465 const char *ifname, int vlan_id)
7466 {
7467 struct i802_bss *bss = priv;
7468 struct wpa_driver_nl80211_data *drv = bss->drv;
7469 struct nl_msg *msg;
7470 int ret = -ENOBUFS;
7471
7472 msg = nlmsg_alloc();
7473 if (!msg)
7474 return -ENOMEM;
7475
7476 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7477
7478 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7479 if_nametoindex(bss->ifname));
7480 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7481 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
7482 if_nametoindex(ifname));
7483
7484 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7485 msg = NULL;
7486 if (ret < 0) {
7487 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
7488 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
7489 MAC2STR(addr), ifname, vlan_id, ret,
7490 strerror(-ret));
7491 }
7492 nla_put_failure:
7493 nlmsg_free(msg);
7494 return ret;
7495 }
7496
7497
7498 static int i802_get_inact_sec(void *priv, const u8 *addr)
7499 {
7500 struct hostap_sta_driver_data data;
7501 int ret;
7502
7503 data.inactive_msec = (unsigned long) -1;
7504 ret = i802_read_sta_data(priv, &data, addr);
7505 if (ret || data.inactive_msec == (unsigned long) -1)
7506 return -1;
7507 return data.inactive_msec / 1000;
7508 }
7509
7510
7511 static int i802_sta_clear_stats(void *priv, const u8 *addr)
7512 {
7513 #if 0
7514 /* TODO */
7515 #endif
7516 return 0;
7517 }
7518
7519
7520 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
7521 int reason)
7522 {
7523 struct i802_bss *bss = priv;
7524 struct wpa_driver_nl80211_data *drv = bss->drv;
7525 struct ieee80211_mgmt mgmt;
7526
7527 if (drv->device_ap_sme)
7528 return wpa_driver_nl80211_sta_remove(bss, addr);
7529
7530 memset(&mgmt, 0, sizeof(mgmt));
7531 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7532 WLAN_FC_STYPE_DEAUTH);
7533 memcpy(mgmt.da, addr, ETH_ALEN);
7534 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7535 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7536 mgmt.u.deauth.reason_code = host_to_le16(reason);
7537 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7538 IEEE80211_HDRLEN +
7539 sizeof(mgmt.u.deauth), 0);
7540 }
7541
7542
7543 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
7544 int reason)
7545 {
7546 struct i802_bss *bss = priv;
7547 struct wpa_driver_nl80211_data *drv = bss->drv;
7548 struct ieee80211_mgmt mgmt;
7549
7550 if (drv->device_ap_sme)
7551 return wpa_driver_nl80211_sta_remove(bss, addr);
7552
7553 memset(&mgmt, 0, sizeof(mgmt));
7554 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7555 WLAN_FC_STYPE_DISASSOC);
7556 memcpy(mgmt.da, addr, ETH_ALEN);
7557 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7558 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7559 mgmt.u.disassoc.reason_code = host_to_le16(reason);
7560 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7561 IEEE80211_HDRLEN +
7562 sizeof(mgmt.u.disassoc), 0);
7563 }
7564
7565 #endif /* HOSTAPD || CONFIG_AP */
7566
7567 #ifdef HOSTAPD
7568
7569 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7570 {
7571 int i;
7572 int *old;
7573
7574 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
7575 ifidx);
7576 for (i = 0; i < drv->num_if_indices; i++) {
7577 if (drv->if_indices[i] == 0) {
7578 drv->if_indices[i] = ifidx;
7579 return;
7580 }
7581 }
7582
7583 if (drv->if_indices != drv->default_if_indices)
7584 old = drv->if_indices;
7585 else
7586 old = NULL;
7587
7588 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
7589 sizeof(int));
7590 if (!drv->if_indices) {
7591 if (!old)
7592 drv->if_indices = drv->default_if_indices;
7593 else
7594 drv->if_indices = old;
7595 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
7596 "interfaces");
7597 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
7598 return;
7599 } else if (!old)
7600 os_memcpy(drv->if_indices, drv->default_if_indices,
7601 sizeof(drv->default_if_indices));
7602 drv->if_indices[drv->num_if_indices] = ifidx;
7603 drv->num_if_indices++;
7604 }
7605
7606
7607 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7608 {
7609 int i;
7610
7611 for (i = 0; i < drv->num_if_indices; i++) {
7612 if (drv->if_indices[i] == ifidx) {
7613 drv->if_indices[i] = 0;
7614 break;
7615 }
7616 }
7617 }
7618
7619
7620 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7621 {
7622 int i;
7623
7624 for (i = 0; i < drv->num_if_indices; i++)
7625 if (drv->if_indices[i] == ifidx)
7626 return 1;
7627
7628 return 0;
7629 }
7630
7631
7632 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
7633 const char *bridge_ifname)
7634 {
7635 struct i802_bss *bss = priv;
7636 struct wpa_driver_nl80211_data *drv = bss->drv;
7637 char name[IFNAMSIZ + 1];
7638
7639 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
7640 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
7641 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
7642 if (val) {
7643 if (!if_nametoindex(name)) {
7644 if (nl80211_create_iface(drv, name,
7645 NL80211_IFTYPE_AP_VLAN,
7646 NULL, 1) < 0)
7647 return -1;
7648 if (bridge_ifname &&
7649 linux_br_add_if(drv->global->ioctl_sock,
7650 bridge_ifname, name) < 0)
7651 return -1;
7652 }
7653 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
7654 return i802_set_sta_vlan(priv, addr, name, 0);
7655 } else {
7656 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
7657 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
7658 name);
7659 }
7660 }
7661
7662
7663 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
7664 {
7665 struct wpa_driver_nl80211_data *drv = eloop_ctx;
7666 struct sockaddr_ll lladdr;
7667 unsigned char buf[3000];
7668 int len;
7669 socklen_t fromlen = sizeof(lladdr);
7670
7671 len = recvfrom(sock, buf, sizeof(buf), 0,
7672 (struct sockaddr *)&lladdr, &fromlen);
7673 if (len < 0) {
7674 perror("recv");
7675 return;
7676 }
7677
7678 if (have_ifidx(drv, lladdr.sll_ifindex))
7679 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
7680 }
7681
7682
7683 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
7684 struct i802_bss *bss,
7685 const char *brname, const char *ifname)
7686 {
7687 int ifindex;
7688 char in_br[IFNAMSIZ];
7689
7690 os_strlcpy(bss->brname, brname, IFNAMSIZ);
7691 ifindex = if_nametoindex(brname);
7692 if (ifindex == 0) {
7693 /*
7694 * Bridge was configured, but the bridge device does
7695 * not exist. Try to add it now.
7696 */
7697 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
7698 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
7699 "bridge interface %s: %s",
7700 brname, strerror(errno));
7701 return -1;
7702 }
7703 bss->added_bridge = 1;
7704 add_ifidx(drv, if_nametoindex(brname));
7705 }
7706
7707 if (linux_br_get(in_br, ifname) == 0) {
7708 if (os_strcmp(in_br, brname) == 0)
7709 return 0; /* already in the bridge */
7710
7711 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
7712 "bridge %s", ifname, in_br);
7713 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
7714 0) {
7715 wpa_printf(MSG_ERROR, "nl80211: Failed to "
7716 "remove interface %s from bridge "
7717 "%s: %s",
7718 ifname, brname, strerror(errno));
7719 return -1;
7720 }
7721 }
7722
7723 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
7724 ifname, brname);
7725 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
7726 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
7727 "into bridge %s: %s",
7728 ifname, brname, strerror(errno));
7729 return -1;
7730 }
7731 bss->added_if_into_bridge = 1;
7732
7733 return 0;
7734 }
7735
7736
7737 static void *i802_init(struct hostapd_data *hapd,
7738 struct wpa_init_params *params)
7739 {
7740 struct wpa_driver_nl80211_data *drv;
7741 struct i802_bss *bss;
7742 size_t i;
7743 char brname[IFNAMSIZ];
7744 int ifindex, br_ifindex;
7745 int br_added = 0;
7746
7747 bss = wpa_driver_nl80211_init(hapd, params->ifname,
7748 params->global_priv);
7749 if (bss == NULL)
7750 return NULL;
7751
7752 drv = bss->drv;
7753 drv->nlmode = NL80211_IFTYPE_AP;
7754 drv->eapol_sock = -1;
7755
7756 if (linux_br_get(brname, params->ifname) == 0) {
7757 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
7758 params->ifname, brname);
7759 br_ifindex = if_nametoindex(brname);
7760 } else {
7761 brname[0] = '\0';
7762 br_ifindex = 0;
7763 }
7764
7765 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
7766 drv->if_indices = drv->default_if_indices;
7767 for (i = 0; i < params->num_bridge; i++) {
7768 if (params->bridge[i]) {
7769 ifindex = if_nametoindex(params->bridge[i]);
7770 if (ifindex)
7771 add_ifidx(drv, ifindex);
7772 if (ifindex == br_ifindex)
7773 br_added = 1;
7774 }
7775 }
7776 if (!br_added && br_ifindex &&
7777 (params->num_bridge == 0 || !params->bridge[0]))
7778 add_ifidx(drv, br_ifindex);
7779
7780 /* start listening for EAPOL on the default AP interface */
7781 add_ifidx(drv, drv->ifindex);
7782
7783 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
7784 goto failed;
7785
7786 if (params->bssid) {
7787 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7788 params->bssid))
7789 goto failed;
7790 }
7791
7792 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
7793 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
7794 "into AP mode", bss->ifname);
7795 goto failed;
7796 }
7797
7798 if (params->num_bridge && params->bridge[0] &&
7799 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
7800 goto failed;
7801
7802 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
7803 goto failed;
7804
7805 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
7806 if (drv->eapol_sock < 0) {
7807 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
7808 goto failed;
7809 }
7810
7811 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
7812 {
7813 printf("Could not register read socket for eapol\n");
7814 goto failed;
7815 }
7816
7817 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7818 params->own_addr))
7819 goto failed;
7820
7821 memcpy(bss->addr, params->own_addr, ETH_ALEN);
7822
7823 return bss;
7824
7825 failed:
7826 wpa_driver_nl80211_deinit(bss);
7827 return NULL;
7828 }
7829
7830
7831 static void i802_deinit(void *priv)
7832 {
7833 wpa_driver_nl80211_deinit(priv);
7834 }
7835
7836 #endif /* HOSTAPD */
7837
7838
7839 static enum nl80211_iftype wpa_driver_nl80211_if_type(
7840 enum wpa_driver_if_type type)
7841 {
7842 switch (type) {
7843 case WPA_IF_STATION:
7844 return NL80211_IFTYPE_STATION;
7845 case WPA_IF_P2P_CLIENT:
7846 case WPA_IF_P2P_GROUP:
7847 return NL80211_IFTYPE_P2P_CLIENT;
7848 case WPA_IF_AP_VLAN:
7849 return NL80211_IFTYPE_AP_VLAN;
7850 case WPA_IF_AP_BSS:
7851 return NL80211_IFTYPE_AP;
7852 case WPA_IF_P2P_GO:
7853 return NL80211_IFTYPE_P2P_GO;
7854 }
7855 return -1;
7856 }
7857
7858
7859 #ifdef CONFIG_P2P
7860
7861 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
7862 {
7863 struct wpa_driver_nl80211_data *drv;
7864 dl_list_for_each(drv, &global->interfaces,
7865 struct wpa_driver_nl80211_data, list) {
7866 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0)
7867 return 1;
7868 }
7869 return 0;
7870 }
7871
7872
7873 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
7874 u8 *new_addr)
7875 {
7876 unsigned int idx;
7877
7878 if (!drv->global)
7879 return -1;
7880
7881 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN);
7882 for (idx = 0; idx < 64; idx++) {
7883 new_addr[0] = drv->first_bss.addr[0] | 0x02;
7884 new_addr[0] ^= idx << 2;
7885 if (!nl80211_addr_in_use(drv->global, new_addr))
7886 break;
7887 }
7888 if (idx == 64)
7889 return -1;
7890
7891 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
7892 MACSTR, MAC2STR(new_addr));
7893
7894 return 0;
7895 }
7896
7897 #endif /* CONFIG_P2P */
7898
7899
7900 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
7901 const char *ifname, const u8 *addr,
7902 void *bss_ctx, void **drv_priv,
7903 char *force_ifname, u8 *if_addr,
7904 const char *bridge)
7905 {
7906 struct i802_bss *bss = priv;
7907 struct wpa_driver_nl80211_data *drv = bss->drv;
7908 int ifidx;
7909 #ifdef HOSTAPD
7910 struct i802_bss *new_bss = NULL;
7911
7912 if (type == WPA_IF_AP_BSS) {
7913 new_bss = os_zalloc(sizeof(*new_bss));
7914 if (new_bss == NULL)
7915 return -1;
7916 }
7917 #endif /* HOSTAPD */
7918
7919 if (addr)
7920 os_memcpy(if_addr, addr, ETH_ALEN);
7921 ifidx = nl80211_create_iface(drv, ifname,
7922 wpa_driver_nl80211_if_type(type), addr,
7923 0);
7924 if (ifidx < 0) {
7925 #ifdef HOSTAPD
7926 os_free(new_bss);
7927 #endif /* HOSTAPD */
7928 return -1;
7929 }
7930
7931 if (!addr &&
7932 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7933 if_addr) < 0) {
7934 nl80211_remove_iface(drv, ifidx);
7935 return -1;
7936 }
7937
7938 #ifdef CONFIG_P2P
7939 if (!addr &&
7940 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
7941 type == WPA_IF_P2P_GO)) {
7942 /* Enforce unique P2P Interface Address */
7943 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
7944
7945 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7946 own_addr) < 0 ||
7947 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
7948 new_addr) < 0) {
7949 nl80211_remove_iface(drv, ifidx);
7950 return -1;
7951 }
7952 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
7953 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
7954 "for P2P group interface");
7955 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
7956 nl80211_remove_iface(drv, ifidx);
7957 return -1;
7958 }
7959 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
7960 new_addr) < 0) {
7961 nl80211_remove_iface(drv, ifidx);
7962 return -1;
7963 }
7964 }
7965 os_memcpy(if_addr, new_addr, ETH_ALEN);
7966 }
7967 #endif /* CONFIG_P2P */
7968
7969 #ifdef HOSTAPD
7970 if (bridge &&
7971 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
7972 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
7973 "interface %s to a bridge %s", ifname, bridge);
7974 nl80211_remove_iface(drv, ifidx);
7975 os_free(new_bss);
7976 return -1;
7977 }
7978
7979 if (type == WPA_IF_AP_BSS) {
7980 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
7981 {
7982 nl80211_remove_iface(drv, ifidx);
7983 os_free(new_bss);
7984 return -1;
7985 }
7986 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
7987 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
7988 new_bss->ifindex = ifidx;
7989 new_bss->drv = drv;
7990 new_bss->next = drv->first_bss.next;
7991 new_bss->freq = drv->first_bss.freq;
7992 drv->first_bss.next = new_bss;
7993 if (drv_priv)
7994 *drv_priv = new_bss;
7995 nl80211_init_bss(new_bss);
7996
7997 /* Subscribe management frames for this WPA_IF_AP_BSS */
7998 if (nl80211_setup_ap(new_bss))
7999 return -1;
8000 }
8001 #endif /* HOSTAPD */
8002
8003 if (drv->global)
8004 drv->global->if_add_ifindex = ifidx;
8005
8006 return 0;
8007 }
8008
8009
8010 static int wpa_driver_nl80211_if_remove(void *priv,
8011 enum wpa_driver_if_type type,
8012 const char *ifname)
8013 {
8014 struct i802_bss *bss = priv;
8015 struct wpa_driver_nl80211_data *drv = bss->drv;
8016 int ifindex = if_nametoindex(ifname);
8017
8018 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
8019 __func__, type, ifname, ifindex);
8020 if (ifindex <= 0)
8021 return -1;
8022
8023 #ifdef HOSTAPD
8024 if (bss->added_if_into_bridge) {
8025 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
8026 bss->ifname) < 0)
8027 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8028 "interface %s from bridge %s: %s",
8029 bss->ifname, bss->brname, strerror(errno));
8030 }
8031 if (bss->added_bridge) {
8032 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
8033 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8034 "bridge %s: %s",
8035 bss->brname, strerror(errno));
8036 }
8037 #endif /* HOSTAPD */
8038
8039 nl80211_remove_iface(drv, ifindex);
8040
8041 #ifdef HOSTAPD
8042 if (type != WPA_IF_AP_BSS)
8043 return 0;
8044
8045 if (bss != &drv->first_bss) {
8046 struct i802_bss *tbss;
8047
8048 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
8049 if (tbss->next == bss) {
8050 tbss->next = bss->next;
8051 /* Unsubscribe management frames */
8052 nl80211_teardown_ap(bss);
8053 nl80211_destroy_bss(bss);
8054 os_free(bss);
8055 bss = NULL;
8056 break;
8057 }
8058 }
8059 if (bss)
8060 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
8061 "BSS %p in the list", __func__, bss);
8062 }
8063 #endif /* HOSTAPD */
8064
8065 return 0;
8066 }
8067
8068
8069 static int cookie_handler(struct nl_msg *msg, void *arg)
8070 {
8071 struct nlattr *tb[NL80211_ATTR_MAX + 1];
8072 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8073 u64 *cookie = arg;
8074 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8075 genlmsg_attrlen(gnlh, 0), NULL);
8076 if (tb[NL80211_ATTR_COOKIE])
8077 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
8078 return NL_SKIP;
8079 }
8080
8081
8082 static int nl80211_send_frame_cmd(struct i802_bss *bss,
8083 unsigned int freq, unsigned int wait,
8084 const u8 *buf, size_t buf_len,
8085 u64 *cookie_out, int no_cck, int no_ack,
8086 int offchanok)
8087 {
8088 struct wpa_driver_nl80211_data *drv = bss->drv;
8089 struct nl_msg *msg;
8090 u64 cookie;
8091 int ret = -1;
8092
8093 msg = nlmsg_alloc();
8094 if (!msg)
8095 return -1;
8096
8097 wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
8098 "no_ack=%d offchanok=%d",
8099 freq, wait, no_cck, no_ack, offchanok);
8100 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
8101
8102 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8103 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8104 if (wait)
8105 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
8106 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
8107 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
8108 if (no_cck)
8109 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
8110 if (no_ack)
8111 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
8112
8113 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
8114
8115 cookie = 0;
8116 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8117 msg = NULL;
8118 if (ret) {
8119 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
8120 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
8121 freq, wait);
8122 goto nla_put_failure;
8123 }
8124 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
8125 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
8126 (long long unsigned int) cookie);
8127
8128 if (cookie_out)
8129 *cookie_out = no_ack ? (u64) -1 : cookie;
8130
8131 nla_put_failure:
8132 nlmsg_free(msg);
8133 return ret;
8134 }
8135
8136
8137 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
8138 unsigned int wait_time,
8139 const u8 *dst, const u8 *src,
8140 const u8 *bssid,
8141 const u8 *data, size_t data_len,
8142 int no_cck)
8143 {
8144 struct i802_bss *bss = priv;
8145 struct wpa_driver_nl80211_data *drv = bss->drv;
8146 int ret = -1;
8147 u8 *buf;
8148 struct ieee80211_hdr *hdr;
8149
8150 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
8151 "freq=%u MHz wait=%d ms no_cck=%d)",
8152 drv->ifindex, freq, wait_time, no_cck);
8153
8154 buf = os_zalloc(24 + data_len);
8155 if (buf == NULL)
8156 return ret;
8157 os_memcpy(buf + 24, data, data_len);
8158 hdr = (struct ieee80211_hdr *) buf;
8159 hdr->frame_control =
8160 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
8161 os_memcpy(hdr->addr1, dst, ETH_ALEN);
8162 os_memcpy(hdr->addr2, src, ETH_ALEN);
8163 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
8164
8165 if (is_ap_interface(drv->nlmode))
8166 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf,
8167 24 + data_len,
8168 0, freq, no_cck, 1,
8169 wait_time);
8170 else
8171 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
8172 24 + data_len,
8173 &drv->send_action_cookie,
8174 no_cck, 0, 1);
8175
8176 os_free(buf);
8177 return ret;
8178 }
8179
8180
8181 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
8182 {
8183 struct i802_bss *bss = priv;
8184 struct wpa_driver_nl80211_data *drv = bss->drv;
8185 struct nl_msg *msg;
8186 int ret;
8187
8188 msg = nlmsg_alloc();
8189 if (!msg)
8190 return;
8191
8192 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
8193
8194 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8195 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
8196
8197 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8198 msg = NULL;
8199 if (ret)
8200 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
8201 "(%s)", ret, strerror(-ret));
8202
8203 nla_put_failure:
8204 nlmsg_free(msg);
8205 }
8206
8207
8208 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
8209 unsigned int duration)
8210 {
8211 struct i802_bss *bss = priv;
8212 struct wpa_driver_nl80211_data *drv = bss->drv;
8213 struct nl_msg *msg;
8214 int ret;
8215 u64 cookie;
8216
8217 msg = nlmsg_alloc();
8218 if (!msg)
8219 return -1;
8220
8221 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
8222
8223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8224 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8225 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
8226
8227 cookie = 0;
8228 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8229 msg = NULL;
8230 if (ret == 0) {
8231 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
8232 "0x%llx for freq=%u MHz duration=%u",
8233 (long long unsigned int) cookie, freq, duration);
8234 drv->remain_on_chan_cookie = cookie;
8235 drv->pending_remain_on_chan = 1;
8236 return 0;
8237 }
8238 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
8239 "(freq=%d duration=%u): %d (%s)",
8240 freq, duration, ret, strerror(-ret));
8241 nla_put_failure:
8242 nlmsg_free(msg);
8243 return -1;
8244 }
8245
8246
8247 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
8248 {
8249 struct i802_bss *bss = priv;
8250 struct wpa_driver_nl80211_data *drv = bss->drv;
8251 struct nl_msg *msg;
8252 int ret;
8253
8254 if (!drv->pending_remain_on_chan) {
8255 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
8256 "to cancel");
8257 return -1;
8258 }
8259
8260 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
8261 "0x%llx",
8262 (long long unsigned int) drv->remain_on_chan_cookie);
8263
8264 msg = nlmsg_alloc();
8265 if (!msg)
8266 return -1;
8267
8268 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
8269
8270 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8271 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
8272
8273 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8274 msg = NULL;
8275 if (ret == 0)
8276 return 0;
8277 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
8278 "%d (%s)", ret, strerror(-ret));
8279 nla_put_failure:
8280 nlmsg_free(msg);
8281 return -1;
8282 }
8283
8284
8285 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
8286 {
8287 struct i802_bss *bss = priv;
8288 struct wpa_driver_nl80211_data *drv = bss->drv;
8289
8290 if (!report) {
8291 if (bss->nl_preq && drv->device_ap_sme &&
8292 is_ap_interface(drv->nlmode)) {
8293 /*
8294 * Do not disable Probe Request reporting that was
8295 * enabled in nl80211_setup_ap().
8296 */
8297 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
8298 "Probe Request reporting nl_preq=%p while "
8299 "in AP mode", bss->nl_preq);
8300 } else if (bss->nl_preq) {
8301 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
8302 "reporting nl_preq=%p", bss->nl_preq);
8303 eloop_unregister_read_sock(
8304 nl_socket_get_fd(bss->nl_preq));
8305 nl_destroy_handles(&bss->nl_preq);
8306 }
8307 return 0;
8308 }
8309
8310 if (bss->nl_preq) {
8311 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
8312 "already on! nl_preq=%p", bss->nl_preq);
8313 return 0;
8314 }
8315
8316 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
8317 if (bss->nl_preq == NULL)
8318 return -1;
8319 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
8320 "reporting nl_preq=%p", bss->nl_preq);
8321
8322 if (nl80211_register_frame(bss, bss->nl_preq,
8323 (WLAN_FC_TYPE_MGMT << 2) |
8324 (WLAN_FC_STYPE_PROBE_REQ << 4),
8325 NULL, 0) < 0)
8326 goto out_err;
8327
8328 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq),
8329 wpa_driver_nl80211_event_receive, bss->nl_cb,
8330 bss->nl_preq);
8331
8332 return 0;
8333
8334 out_err:
8335 nl_destroy_handles(&bss->nl_preq);
8336 return -1;
8337 }
8338
8339
8340 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
8341 int ifindex, int disabled)
8342 {
8343 struct nl_msg *msg;
8344 struct nlattr *bands, *band;
8345 int ret;
8346
8347 msg = nlmsg_alloc();
8348 if (!msg)
8349 return -1;
8350
8351 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
8352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
8353
8354 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
8355 if (!bands)
8356 goto nla_put_failure;
8357
8358 /*
8359 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
8360 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
8361 * rates. All 5 GHz rates are left enabled.
8362 */
8363 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
8364 if (!band)
8365 goto nla_put_failure;
8366 if (disabled) {
8367 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
8368 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
8369 }
8370 nla_nest_end(msg, band);
8371
8372 nla_nest_end(msg, bands);
8373
8374 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8375 msg = NULL;
8376 if (ret) {
8377 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
8378 "(%s)", ret, strerror(-ret));
8379 } else
8380 drv->disabled_11b_rates = disabled;
8381
8382 return ret;
8383
8384 nla_put_failure:
8385 nlmsg_free(msg);
8386 return -1;
8387 }
8388
8389
8390 static int wpa_driver_nl80211_deinit_ap(void *priv)
8391 {
8392 struct i802_bss *bss = priv;
8393 struct wpa_driver_nl80211_data *drv = bss->drv;
8394 if (!is_ap_interface(drv->nlmode))
8395 return -1;
8396 wpa_driver_nl80211_del_beacon(drv);
8397 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8398 }
8399
8400
8401 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
8402 {
8403 struct i802_bss *bss = priv;
8404 struct wpa_driver_nl80211_data *drv = bss->drv;
8405 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
8406 return -1;
8407 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8408 }
8409
8410
8411 static void wpa_driver_nl80211_resume(void *priv)
8412 {
8413 struct i802_bss *bss = priv;
8414 struct wpa_driver_nl80211_data *drv = bss->drv;
8415 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
8416 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
8417 "resume event");
8418 }
8419 }
8420
8421
8422 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
8423 const u8 *ies, size_t ies_len)
8424 {
8425 struct i802_bss *bss = priv;
8426 struct wpa_driver_nl80211_data *drv = bss->drv;
8427 int ret;
8428 u8 *data, *pos;
8429 size_t data_len;
8430 const u8 *own_addr = bss->addr;
8431
8432 if (action != 1) {
8433 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
8434 "action %d", action);
8435 return -1;
8436 }
8437
8438 /*
8439 * Action frame payload:
8440 * Category[1] = 6 (Fast BSS Transition)
8441 * Action[1] = 1 (Fast BSS Transition Request)
8442 * STA Address
8443 * Target AP Address
8444 * FT IEs
8445 */
8446
8447 data_len = 2 + 2 * ETH_ALEN + ies_len;
8448 data = os_malloc(data_len);
8449 if (data == NULL)
8450 return -1;
8451 pos = data;
8452 *pos++ = 0x06; /* FT Action category */
8453 *pos++ = action;
8454 os_memcpy(pos, own_addr, ETH_ALEN);
8455 pos += ETH_ALEN;
8456 os_memcpy(pos, target_ap, ETH_ALEN);
8457 pos += ETH_ALEN;
8458 os_memcpy(pos, ies, ies_len);
8459
8460 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
8461 drv->bssid, own_addr, drv->bssid,
8462 data, data_len, 0);
8463 os_free(data);
8464
8465 return ret;
8466 }
8467
8468
8469 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
8470 {
8471 struct i802_bss *bss = priv;
8472 struct wpa_driver_nl80211_data *drv = bss->drv;
8473 struct nl_msg *msg, *cqm = NULL;
8474 int ret = -1;
8475
8476 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
8477 "hysteresis=%d", threshold, hysteresis);
8478
8479 msg = nlmsg_alloc();
8480 if (!msg)
8481 return -1;
8482
8483 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
8484
8485 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8486
8487 cqm = nlmsg_alloc();
8488 if (cqm == NULL)
8489 goto nla_put_failure;
8490
8491 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
8492 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
8493 if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0)
8494 goto nla_put_failure;
8495
8496 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8497 msg = NULL;
8498
8499 nla_put_failure:
8500 nlmsg_free(cqm);
8501 nlmsg_free(msg);
8502 return ret;
8503 }
8504
8505
8506 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
8507 {
8508 struct i802_bss *bss = priv;
8509 struct wpa_driver_nl80211_data *drv = bss->drv;
8510 int res;
8511
8512 os_memset(si, 0, sizeof(*si));
8513 res = nl80211_get_link_signal(drv, si);
8514 if (res != 0)
8515 return res;
8516
8517 return nl80211_get_link_noise(drv, si);
8518 }
8519
8520
8521 static int wpa_driver_nl80211_shared_freq(void *priv)
8522 {
8523 struct i802_bss *bss = priv;
8524 struct wpa_driver_nl80211_data *drv = bss->drv;
8525 struct wpa_driver_nl80211_data *driver;
8526 int freq = 0;
8527
8528 /*
8529 * If the same PHY is in connected state with some other interface,
8530 * then retrieve the assoc freq.
8531 */
8532 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
8533 drv->phyname);
8534
8535 dl_list_for_each(driver, &drv->global->interfaces,
8536 struct wpa_driver_nl80211_data, list) {
8537 if (drv == driver ||
8538 os_strcmp(drv->phyname, driver->phyname) != 0 ||
8539 !driver->associated)
8540 continue;
8541
8542 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
8543 MACSTR,
8544 driver->phyname, driver->first_bss.ifname,
8545 MAC2STR(driver->first_bss.addr));
8546 if (is_ap_interface(driver->nlmode))
8547 freq = driver->first_bss.freq;
8548 else
8549 freq = nl80211_get_assoc_freq(driver);
8550 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
8551 drv->phyname, freq);
8552 }
8553
8554 if (!freq)
8555 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
8556 "PHY (%s) in associated state", drv->phyname);
8557
8558 return freq;
8559 }
8560
8561
8562 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
8563 int encrypt)
8564 {
8565 struct i802_bss *bss = priv;
8566 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
8567 0, 0, 0, 0);
8568 }
8569
8570
8571 static int nl80211_set_param(void *priv, const char *param)
8572 {
8573 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
8574 if (param == NULL)
8575 return 0;
8576
8577 #ifdef CONFIG_P2P
8578 if (os_strstr(param, "use_p2p_group_interface=1")) {
8579 struct i802_bss *bss = priv;
8580 struct wpa_driver_nl80211_data *drv = bss->drv;
8581
8582 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
8583 "interface");
8584 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
8585 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
8586 }
8587 #endif /* CONFIG_P2P */
8588
8589 return 0;
8590 }
8591
8592
8593 static void * nl80211_global_init(void)
8594 {
8595 struct nl80211_global *global;
8596 struct netlink_config *cfg;
8597
8598 global = os_zalloc(sizeof(*global));
8599 if (global == NULL)
8600 return NULL;
8601 global->ioctl_sock = -1;
8602 dl_list_init(&global->interfaces);
8603 global->if_add_ifindex = -1;
8604
8605 cfg = os_zalloc(sizeof(*cfg));
8606 if (cfg == NULL)
8607 goto err;
8608
8609 cfg->ctx = global;
8610 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
8611 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
8612 global->netlink = netlink_init(cfg);
8613 if (global->netlink == NULL) {
8614 os_free(cfg);
8615 goto err;
8616 }
8617
8618 if (wpa_driver_nl80211_init_nl_global(global) < 0)
8619 goto err;
8620
8621 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
8622 if (global->ioctl_sock < 0) {
8623 perror("socket(PF_INET,SOCK_DGRAM)");
8624 goto err;
8625 }
8626
8627 return global;
8628
8629 err:
8630 nl80211_global_deinit(global);
8631 return NULL;
8632 }
8633
8634
8635 static void nl80211_global_deinit(void *priv)
8636 {
8637 struct nl80211_global *global = priv;
8638 if (global == NULL)
8639 return;
8640 if (!dl_list_empty(&global->interfaces)) {
8641 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
8642 "nl80211_global_deinit",
8643 dl_list_len(&global->interfaces));
8644 }
8645
8646 if (global->netlink)
8647 netlink_deinit(global->netlink);
8648
8649 nl_destroy_handles(&global->nl);
8650
8651 if (global->nl_event) {
8652 eloop_unregister_read_sock(
8653 nl_socket_get_fd(global->nl_event));
8654 nl_destroy_handles(&global->nl_event);
8655 }
8656
8657 nl_cb_put(global->nl_cb);
8658
8659 if (global->ioctl_sock >= 0)
8660 close(global->ioctl_sock);
8661
8662 os_free(global);
8663 }
8664
8665
8666 static const char * nl80211_get_radio_name(void *priv)
8667 {
8668 struct i802_bss *bss = priv;
8669 struct wpa_driver_nl80211_data *drv = bss->drv;
8670 return drv->phyname;
8671 }
8672
8673
8674 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
8675 const u8 *pmkid)
8676 {
8677 struct nl_msg *msg;
8678
8679 msg = nlmsg_alloc();
8680 if (!msg)
8681 return -ENOMEM;
8682
8683 nl80211_cmd(bss->drv, msg, 0, cmd);
8684
8685 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8686 if (pmkid)
8687 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
8688 if (bssid)
8689 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
8690
8691 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8692 nla_put_failure:
8693 nlmsg_free(msg);
8694 return -ENOBUFS;
8695 }
8696
8697
8698 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8699 {
8700 struct i802_bss *bss = priv;
8701 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
8702 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
8703 }
8704
8705
8706 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8707 {
8708 struct i802_bss *bss = priv;
8709 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
8710 MAC2STR(bssid));
8711 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
8712 }
8713
8714
8715 static int nl80211_flush_pmkid(void *priv)
8716 {
8717 struct i802_bss *bss = priv;
8718 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
8719 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
8720 }
8721
8722
8723 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
8724 const u8 *replay_ctr)
8725 {
8726 struct i802_bss *bss = priv;
8727 struct wpa_driver_nl80211_data *drv = bss->drv;
8728 struct nlattr *replay_nested;
8729 struct nl_msg *msg;
8730
8731 msg = nlmsg_alloc();
8732 if (!msg)
8733 return;
8734
8735 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8736
8737 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8738
8739 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8740 if (!replay_nested)
8741 goto nla_put_failure;
8742
8743 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
8744 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
8745 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
8746 replay_ctr);
8747
8748 nla_nest_end(msg, replay_nested);
8749
8750 send_and_recv_msgs(drv, msg, NULL, NULL);
8751 return;
8752 nla_put_failure:
8753 nlmsg_free(msg);
8754 }
8755
8756
8757 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
8758 const u8 *addr, int qos)
8759 {
8760 /* send data frame to poll STA and check whether
8761 * this frame is ACKed */
8762 struct {
8763 struct ieee80211_hdr hdr;
8764 u16 qos_ctl;
8765 } STRUCT_PACKED nulldata;
8766 size_t size;
8767
8768 /* Send data frame to poll STA and check whether this frame is ACKed */
8769
8770 os_memset(&nulldata, 0, sizeof(nulldata));
8771
8772 if (qos) {
8773 nulldata.hdr.frame_control =
8774 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8775 WLAN_FC_STYPE_QOS_NULL);
8776 size = sizeof(nulldata);
8777 } else {
8778 nulldata.hdr.frame_control =
8779 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8780 WLAN_FC_STYPE_NULLFUNC);
8781 size = sizeof(struct ieee80211_hdr);
8782 }
8783
8784 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
8785 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8786 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8787 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8788
8789 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
8790 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
8791 "send poll frame");
8792 }
8793
8794 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
8795 int qos)
8796 {
8797 struct i802_bss *bss = priv;
8798 struct wpa_driver_nl80211_data *drv = bss->drv;
8799 struct nl_msg *msg;
8800
8801 if (!drv->poll_command_supported) {
8802 nl80211_send_null_frame(bss, own_addr, addr, qos);
8803 return;
8804 }
8805
8806 msg = nlmsg_alloc();
8807 if (!msg)
8808 return;
8809
8810 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
8811
8812 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8813 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8814
8815 send_and_recv_msgs(drv, msg, NULL, NULL);
8816 return;
8817 nla_put_failure:
8818 nlmsg_free(msg);
8819 }
8820
8821
8822 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
8823 {
8824 struct nl_msg *msg;
8825
8826 msg = nlmsg_alloc();
8827 if (!msg)
8828 return -ENOMEM;
8829
8830 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
8831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8832 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
8833 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
8834 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8835 nla_put_failure:
8836 nlmsg_free(msg);
8837 return -ENOBUFS;
8838 }
8839
8840
8841 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
8842 int ctwindow)
8843 {
8844 struct i802_bss *bss = priv;
8845
8846 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
8847 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
8848
8849 if (opp_ps != -1 || ctwindow != -1)
8850 return -1; /* Not yet supported */
8851
8852 if (legacy_ps == -1)
8853 return 0;
8854 if (legacy_ps != 0 && legacy_ps != 1)
8855 return -1; /* Not yet supported */
8856
8857 return nl80211_set_power_save(bss, legacy_ps);
8858 }
8859
8860
8861 #ifdef CONFIG_TDLS
8862
8863 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
8864 u8 dialog_token, u16 status_code,
8865 const u8 *buf, size_t len)
8866 {
8867 struct i802_bss *bss = priv;
8868 struct wpa_driver_nl80211_data *drv = bss->drv;
8869 struct nl_msg *msg;
8870
8871 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8872 return -EOPNOTSUPP;
8873
8874 if (!dst)
8875 return -EINVAL;
8876
8877 msg = nlmsg_alloc();
8878 if (!msg)
8879 return -ENOMEM;
8880
8881 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
8882 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8883 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
8884 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
8885 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
8886 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
8887 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
8888
8889 return send_and_recv_msgs(drv, msg, NULL, NULL);
8890
8891 nla_put_failure:
8892 nlmsg_free(msg);
8893 return -ENOBUFS;
8894 }
8895
8896
8897 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8898 {
8899 struct i802_bss *bss = priv;
8900 struct wpa_driver_nl80211_data *drv = bss->drv;
8901 struct nl_msg *msg;
8902 enum nl80211_tdls_operation nl80211_oper;
8903
8904 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8905 return -EOPNOTSUPP;
8906
8907 switch (oper) {
8908 case TDLS_DISCOVERY_REQ:
8909 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8910 break;
8911 case TDLS_SETUP:
8912 nl80211_oper = NL80211_TDLS_SETUP;
8913 break;
8914 case TDLS_TEARDOWN:
8915 nl80211_oper = NL80211_TDLS_TEARDOWN;
8916 break;
8917 case TDLS_ENABLE_LINK:
8918 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8919 break;
8920 case TDLS_DISABLE_LINK:
8921 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8922 break;
8923 case TDLS_ENABLE:
8924 return 0;
8925 case TDLS_DISABLE:
8926 return 0;
8927 default:
8928 return -EINVAL;
8929 }
8930
8931 msg = nlmsg_alloc();
8932 if (!msg)
8933 return -ENOMEM;
8934
8935 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8936 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8937 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8938 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8939
8940 return send_and_recv_msgs(drv, msg, NULL, NULL);
8941
8942 nla_put_failure:
8943 nlmsg_free(msg);
8944 return -ENOBUFS;
8945 }
8946
8947 #endif /* CONFIG TDLS */
8948
8949
8950 #ifdef ANDROID
8951
8952 typedef struct android_wifi_priv_cmd {
8953 char *buf;
8954 int used_len;
8955 int total_len;
8956 } android_wifi_priv_cmd;
8957
8958 static int drv_errors = 0;
8959
8960 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
8961 {
8962 drv_errors++;
8963 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
8964 drv_errors = 0;
8965 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8966 }
8967 }
8968
8969
8970 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
8971 {
8972 struct wpa_driver_nl80211_data *drv = bss->drv;
8973 struct ifreq ifr;
8974 android_wifi_priv_cmd priv_cmd;
8975 char buf[MAX_DRV_CMD_SIZE];
8976 int ret;
8977
8978 os_memset(&ifr, 0, sizeof(ifr));
8979 os_memset(&priv_cmd, 0, sizeof(priv_cmd));
8980 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8981
8982 os_memset(buf, 0, sizeof(buf));
8983 os_strlcpy(buf, cmd, sizeof(buf));
8984
8985 priv_cmd.buf = buf;
8986 priv_cmd.used_len = sizeof(buf);
8987 priv_cmd.total_len = sizeof(buf);
8988 ifr.ifr_data = &priv_cmd;
8989
8990 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8991 if (ret < 0) {
8992 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
8993 __func__);
8994 wpa_driver_send_hang_msg(drv);
8995 return ret;
8996 }
8997
8998 drv_errors = 0;
8999 return 0;
9000 }
9001
9002
9003 static int android_pno_start(struct i802_bss *bss,
9004 struct wpa_driver_scan_params *params)
9005 {
9006 struct wpa_driver_nl80211_data *drv = bss->drv;
9007 struct ifreq ifr;
9008 android_wifi_priv_cmd priv_cmd;
9009 int ret = 0, i = 0, bp;
9010 char buf[WEXT_PNO_MAX_COMMAND_SIZE];
9011
9012 bp = WEXT_PNOSETUP_HEADER_SIZE;
9013 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
9014 buf[bp++] = WEXT_PNO_TLV_PREFIX;
9015 buf[bp++] = WEXT_PNO_TLV_VERSION;
9016 buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
9017 buf[bp++] = WEXT_PNO_TLV_RESERVED;
9018
9019 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
9020 /* Check that there is enough space needed for 1 more SSID, the
9021 * other sections and null termination */
9022 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
9023 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
9024 break;
9025 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
9026 params->ssids[i].ssid,
9027 params->ssids[i].ssid_len);
9028 buf[bp++] = WEXT_PNO_SSID_SECTION;
9029 buf[bp++] = params->ssids[i].ssid_len;
9030 os_memcpy(&buf[bp], params->ssids[i].ssid,
9031 params->ssids[i].ssid_len);
9032 bp += params->ssids[i].ssid_len;
9033 i++;
9034 }
9035
9036 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
9037 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
9038 WEXT_PNO_SCAN_INTERVAL);
9039 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
9040
9041 buf[bp++] = WEXT_PNO_REPEAT_SECTION;
9042 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
9043 WEXT_PNO_REPEAT);
9044 bp += WEXT_PNO_REPEAT_LENGTH;
9045
9046 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
9047 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
9048 WEXT_PNO_MAX_REPEAT);
9049 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
9050
9051 memset(&ifr, 0, sizeof(ifr));
9052 memset(&priv_cmd, 0, sizeof(priv_cmd));
9053 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9054
9055 priv_cmd.buf = buf;
9056 priv_cmd.used_len = bp;
9057 priv_cmd.total_len = bp;
9058 ifr.ifr_data = &priv_cmd;
9059
9060 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9061
9062 if (ret < 0) {
9063 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
9064 ret);
9065 wpa_driver_send_hang_msg(drv);
9066 return ret;
9067 }
9068
9069 drv_errors = 0;
9070
9071 return android_priv_cmd(bss, "PNOFORCE 1");
9072 }
9073
9074
9075 static int android_pno_stop(struct i802_bss *bss)
9076 {
9077 return android_priv_cmd(bss, "PNOFORCE 0");
9078 }
9079
9080 #endif /* ANDROID */
9081
9082
9083 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9084 .name = "nl80211",
9085 .desc = "Linux nl80211/cfg80211",
9086 .get_bssid = wpa_driver_nl80211_get_bssid,
9087 .get_ssid = wpa_driver_nl80211_get_ssid,
9088 .set_key = wpa_driver_nl80211_set_key,
9089 .scan2 = wpa_driver_nl80211_scan,
9090 .sched_scan = wpa_driver_nl80211_sched_scan,
9091 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9092 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9093 .deauthenticate = wpa_driver_nl80211_deauthenticate,
9094 .disassociate = wpa_driver_nl80211_disassociate,
9095 .authenticate = wpa_driver_nl80211_authenticate,
9096 .associate = wpa_driver_nl80211_associate,
9097 .global_init = nl80211_global_init,
9098 .global_deinit = nl80211_global_deinit,
9099 .init2 = wpa_driver_nl80211_init,
9100 .deinit = wpa_driver_nl80211_deinit,
9101 .get_capa = wpa_driver_nl80211_get_capa,
9102 .set_operstate = wpa_driver_nl80211_set_operstate,
9103 .set_supp_port = wpa_driver_nl80211_set_supp_port,
9104 .set_country = wpa_driver_nl80211_set_country,
9105 .set_ap = wpa_driver_nl80211_set_ap,
9106 .if_add = wpa_driver_nl80211_if_add,
9107 .if_remove = wpa_driver_nl80211_if_remove,
9108 .send_mlme = wpa_driver_nl80211_send_mlme,
9109 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
9110 .sta_add = wpa_driver_nl80211_sta_add,
9111 .sta_remove = wpa_driver_nl80211_sta_remove,
9112 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9113 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9114 #ifdef HOSTAPD
9115 .hapd_init = i802_init,
9116 .hapd_deinit = i802_deinit,
9117 .set_wds_sta = i802_set_wds_sta,
9118 #endif /* HOSTAPD */
9119 #if defined(HOSTAPD) || defined(CONFIG_AP)
9120 .get_seqnum = i802_get_seqnum,
9121 .flush = i802_flush,
9122 .read_sta_data = i802_read_sta_data,
9123 .get_inact_sec = i802_get_inact_sec,
9124 .sta_clear_stats = i802_sta_clear_stats,
9125 .set_rts = i802_set_rts,
9126 .set_frag = i802_set_frag,
9127 .set_tx_queue_params = i802_set_tx_queue_params,
9128 .set_sta_vlan = i802_set_sta_vlan,
9129 .sta_deauth = i802_sta_deauth,
9130 .sta_disassoc = i802_sta_disassoc,
9131 #endif /* HOSTAPD || CONFIG_AP */
9132 .set_freq = i802_set_freq,
9133 .send_action = wpa_driver_nl80211_send_action,
9134 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9135 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9136 .cancel_remain_on_channel =
9137 wpa_driver_nl80211_cancel_remain_on_channel,
9138 .probe_req_report = wpa_driver_nl80211_probe_req_report,
9139 .deinit_ap = wpa_driver_nl80211_deinit_ap,
9140 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9141 .resume = wpa_driver_nl80211_resume,
9142 .send_ft_action = nl80211_send_ft_action,
9143 .signal_monitor = nl80211_signal_monitor,
9144 .signal_poll = nl80211_signal_poll,
9145 .send_frame = nl80211_send_frame,
9146 .shared_freq = wpa_driver_nl80211_shared_freq,
9147 .set_param = nl80211_set_param,
9148 .get_radio_name = nl80211_get_radio_name,
9149 .add_pmkid = nl80211_add_pmkid,
9150 .remove_pmkid = nl80211_remove_pmkid,
9151 .flush_pmkid = nl80211_flush_pmkid,
9152 .set_rekey_info = nl80211_set_rekey_info,
9153 .poll_client = nl80211_poll_client,
9154 .set_p2p_powersave = nl80211_set_p2p_powersave,
9155 #ifdef CONFIG_TDLS
9156 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9157 .tdls_oper = nl80211_tdls_oper,
9158 #endif /* CONFIG_TDLS */
9159 };
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