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nl80211: Register Link Measurement Request Action frame
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
1 /*
2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2014, 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/types.h>
15 #include <fcntl.h>
16 #include <net/if.h>
17 #include <netlink/genl/genl.h>
18 #include <netlink/genl/ctrl.h>
19 #ifdef CONFIG_LIBNL3_ROUTE
20 #include <netlink/route/neighbour.h>
21 #endif /* CONFIG_LIBNL3_ROUTE */
22 #include <linux/rtnetlink.h>
23 #include <netpacket/packet.h>
24 #include <linux/errqueue.h>
25
26 #include "common.h"
27 #include "eloop.h"
28 #include "common/qca-vendor.h"
29 #include "common/qca-vendor-attr.h"
30 #include "common/ieee802_11_defs.h"
31 #include "common/ieee802_11_common.h"
32 #include "l2_packet/l2_packet.h"
33 #include "netlink.h"
34 #include "linux_defines.h"
35 #include "linux_ioctl.h"
36 #include "radiotap.h"
37 #include "radiotap_iter.h"
38 #include "rfkill.h"
39 #include "driver_nl80211.h"
40
41
42 #ifndef CONFIG_LIBNL20
43 /*
44 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
45 * but when you free a socket again it will mess up its bitmap and
46 * and use the wrong number the next time it needs a socket ID.
47 * Therefore, we wrap the handle alloc/destroy and add our own pid
48 * accounting.
49 */
50 static uint32_t port_bitmap[32] = { 0 };
51
52 static struct nl_handle *nl80211_handle_alloc(void *cb)
53 {
54 struct nl_handle *handle;
55 uint32_t pid = getpid() & 0x3FFFFF;
56 int i;
57
58 handle = nl_handle_alloc_cb(cb);
59
60 for (i = 0; i < 1024; i++) {
61 if (port_bitmap[i / 32] & (1 << (i % 32)))
62 continue;
63 port_bitmap[i / 32] |= 1 << (i % 32);
64 pid += i << 22;
65 break;
66 }
67
68 nl_socket_set_local_port(handle, pid);
69
70 return handle;
71 }
72
73 static void nl80211_handle_destroy(struct nl_handle *handle)
74 {
75 uint32_t port = nl_socket_get_local_port(handle);
76
77 port >>= 22;
78 port_bitmap[port / 32] &= ~(1 << (port % 32));
79
80 nl_handle_destroy(handle);
81 }
82 #endif /* CONFIG_LIBNL20 */
83
84
85 #ifdef ANDROID
86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
87 #undef nl_socket_set_nonblocking
88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
89
90 #define genl_ctrl_resolve android_genl_ctrl_resolve
91 #endif /* ANDROID */
92
93
94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
95 {
96 struct nl_handle *handle;
97
98 handle = nl80211_handle_alloc(cb);
99 if (handle == NULL) {
100 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
101 "callbacks (%s)", dbg);
102 return NULL;
103 }
104
105 if (genl_connect(handle)) {
106 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
107 "netlink (%s)", dbg);
108 nl80211_handle_destroy(handle);
109 return NULL;
110 }
111
112 return handle;
113 }
114
115
116 static void nl_destroy_handles(struct nl_handle **handle)
117 {
118 if (*handle == NULL)
119 return;
120 nl80211_handle_destroy(*handle);
121 *handle = NULL;
122 }
123
124
125 #if __WORDSIZE == 64
126 #define ELOOP_SOCKET_INVALID (intptr_t) 0x8888888888888889ULL
127 #else
128 #define ELOOP_SOCKET_INVALID (intptr_t) 0x88888889ULL
129 #endif
130
131 static void nl80211_register_eloop_read(struct nl_handle **handle,
132 eloop_sock_handler handler,
133 void *eloop_data)
134 {
135 nl_socket_set_nonblocking(*handle);
136 eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
137 eloop_data, *handle);
138 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
139 }
140
141
142 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
143 {
144 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
145 eloop_unregister_read_sock(nl_socket_get_fd(*handle));
146 nl_destroy_handles(handle);
147 }
148
149
150 static void nl80211_global_deinit(void *priv);
151
152 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
153 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
154 struct hostapd_freq_params *freq);
155
156 static int
157 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
158 const u8 *set_addr, int first);
159 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
160 const u8 *addr, int cmd, u16 reason_code,
161 int local_state_change);
162 static int nl80211_send_frame_cmd(struct i802_bss *bss,
163 unsigned int freq, unsigned int wait,
164 const u8 *buf, size_t buf_len, u64 *cookie,
165 int no_cck, int no_ack, int offchanok);
166 static int nl80211_register_frame(struct i802_bss *bss,
167 struct nl_handle *hl_handle,
168 u16 type, const u8 *match, size_t match_len);
169 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
170 int report);
171
172 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
173 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
174 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
175 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
176 enum wpa_driver_if_type type,
177 const char *ifname);
178
179 static int nl80211_set_channel(struct i802_bss *bss,
180 struct hostapd_freq_params *freq, int set_chan);
181 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
182 int ifindex, int disabled);
183
184 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
185
186 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
187 static int i802_set_iface_flags(struct i802_bss *bss, int up);
188
189
190 /* Converts nl80211_chan_width to a common format */
191 enum chan_width convert2width(int width)
192 {
193 switch (width) {
194 case NL80211_CHAN_WIDTH_20_NOHT:
195 return CHAN_WIDTH_20_NOHT;
196 case NL80211_CHAN_WIDTH_20:
197 return CHAN_WIDTH_20;
198 case NL80211_CHAN_WIDTH_40:
199 return CHAN_WIDTH_40;
200 case NL80211_CHAN_WIDTH_80:
201 return CHAN_WIDTH_80;
202 case NL80211_CHAN_WIDTH_80P80:
203 return CHAN_WIDTH_80P80;
204 case NL80211_CHAN_WIDTH_160:
205 return CHAN_WIDTH_160;
206 }
207 return CHAN_WIDTH_UNKNOWN;
208 }
209
210
211 int is_ap_interface(enum nl80211_iftype nlmode)
212 {
213 return nlmode == NL80211_IFTYPE_AP ||
214 nlmode == NL80211_IFTYPE_P2P_GO;
215 }
216
217
218 static int is_sta_interface(enum nl80211_iftype nlmode)
219 {
220 return nlmode == NL80211_IFTYPE_STATION ||
221 nlmode == NL80211_IFTYPE_P2P_CLIENT;
222 }
223
224
225 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
226 {
227 return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
228 nlmode == NL80211_IFTYPE_P2P_GO;
229 }
230
231
232 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
233 int ifindex)
234 {
235 struct i802_bss *bss;
236
237 for (bss = drv->first_bss; bss; bss = bss->next) {
238 if (bss->ifindex == ifindex)
239 return bss;
240 }
241
242 return NULL;
243 }
244
245
246 static int is_mesh_interface(enum nl80211_iftype nlmode)
247 {
248 return nlmode == NL80211_IFTYPE_MESH_POINT;
249 }
250
251
252 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
253 {
254 if (drv->associated)
255 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
256 drv->associated = 0;
257 os_memset(drv->bssid, 0, ETH_ALEN);
258 }
259
260
261 struct nl80211_bss_info_arg {
262 struct wpa_driver_nl80211_data *drv;
263 struct wpa_scan_results *res;
264 unsigned int assoc_freq;
265 unsigned int ibss_freq;
266 u8 assoc_bssid[ETH_ALEN];
267 };
268
269 static int bss_info_handler(struct nl_msg *msg, void *arg);
270
271
272 /* nl80211 code */
273 static int ack_handler(struct nl_msg *msg, void *arg)
274 {
275 int *err = arg;
276 *err = 0;
277 return NL_STOP;
278 }
279
280 static int finish_handler(struct nl_msg *msg, void *arg)
281 {
282 int *ret = arg;
283 *ret = 0;
284 return NL_SKIP;
285 }
286
287 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
288 void *arg)
289 {
290 int *ret = arg;
291 *ret = err->error;
292 return NL_SKIP;
293 }
294
295
296 static int no_seq_check(struct nl_msg *msg, void *arg)
297 {
298 return NL_OK;
299 }
300
301
302 static int send_and_recv(struct nl80211_global *global,
303 struct nl_handle *nl_handle, struct nl_msg *msg,
304 int (*valid_handler)(struct nl_msg *, void *),
305 void *valid_data)
306 {
307 struct nl_cb *cb;
308 int err = -ENOMEM;
309
310 cb = nl_cb_clone(global->nl_cb);
311 if (!cb)
312 goto out;
313
314 err = nl_send_auto_complete(nl_handle, msg);
315 if (err < 0)
316 goto out;
317
318 err = 1;
319
320 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
321 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
322 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
323
324 if (valid_handler)
325 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
326 valid_handler, valid_data);
327
328 while (err > 0) {
329 int res = nl_recvmsgs(nl_handle, cb);
330 if (res < 0) {
331 wpa_printf(MSG_INFO,
332 "nl80211: %s->nl_recvmsgs failed: %d",
333 __func__, res);
334 }
335 }
336 out:
337 nl_cb_put(cb);
338 nlmsg_free(msg);
339 return err;
340 }
341
342
343 static int send_and_recv_msgs_global(struct nl80211_global *global,
344 struct nl_msg *msg,
345 int (*valid_handler)(struct nl_msg *, void *),
346 void *valid_data)
347 {
348 return send_and_recv(global, global->nl, msg, valid_handler,
349 valid_data);
350 }
351
352
353 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
354 struct nl_msg *msg,
355 int (*valid_handler)(struct nl_msg *, void *),
356 void *valid_data)
357 {
358 return send_and_recv(drv->global, drv->global->nl, msg,
359 valid_handler, valid_data);
360 }
361
362
363 struct family_data {
364 const char *group;
365 int id;
366 };
367
368
369 int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
370 {
371 if (bss->wdev_id_set)
372 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
373 else
374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
375 return 0;
376
377 nla_put_failure:
378 return -1;
379 }
380
381
382 static int family_handler(struct nl_msg *msg, void *arg)
383 {
384 struct family_data *res = arg;
385 struct nlattr *tb[CTRL_ATTR_MAX + 1];
386 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
387 struct nlattr *mcgrp;
388 int i;
389
390 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
391 genlmsg_attrlen(gnlh, 0), NULL);
392 if (!tb[CTRL_ATTR_MCAST_GROUPS])
393 return NL_SKIP;
394
395 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
396 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
397 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
398 nla_len(mcgrp), NULL);
399 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
400 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
401 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
402 res->group,
403 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
404 continue;
405 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
406 break;
407 };
408
409 return NL_SKIP;
410 }
411
412
413 static int nl_get_multicast_id(struct nl80211_global *global,
414 const char *family, const char *group)
415 {
416 struct nl_msg *msg;
417 int ret = -1;
418 struct family_data res = { group, -ENOENT };
419
420 msg = nlmsg_alloc();
421 if (!msg)
422 return -ENOMEM;
423 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
424 0, 0, CTRL_CMD_GETFAMILY, 0);
425 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
426
427 ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
428 msg = NULL;
429 if (ret == 0)
430 ret = res.id;
431
432 nla_put_failure:
433 nlmsg_free(msg);
434 return ret;
435 }
436
437
438 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
439 struct nl_msg *msg, int flags, uint8_t cmd)
440 {
441 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
442 0, flags, cmd, 0);
443 }
444
445
446 struct wiphy_idx_data {
447 int wiphy_idx;
448 enum nl80211_iftype nlmode;
449 u8 *macaddr;
450 };
451
452
453 static int netdev_info_handler(struct nl_msg *msg, void *arg)
454 {
455 struct nlattr *tb[NL80211_ATTR_MAX + 1];
456 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
457 struct wiphy_idx_data *info = arg;
458
459 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
460 genlmsg_attrlen(gnlh, 0), NULL);
461
462 if (tb[NL80211_ATTR_WIPHY])
463 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
464
465 if (tb[NL80211_ATTR_IFTYPE])
466 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
467
468 if (tb[NL80211_ATTR_MAC] && info->macaddr)
469 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
470 ETH_ALEN);
471
472 return NL_SKIP;
473 }
474
475
476 int nl80211_get_wiphy_index(struct i802_bss *bss)
477 {
478 struct nl_msg *msg;
479 struct wiphy_idx_data data = {
480 .wiphy_idx = -1,
481 .macaddr = NULL,
482 };
483
484 msg = nlmsg_alloc();
485 if (!msg)
486 return NL80211_IFTYPE_UNSPECIFIED;
487
488 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
489
490 if (nl80211_set_iface_id(msg, bss) < 0)
491 goto nla_put_failure;
492
493 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
494 return data.wiphy_idx;
495 msg = NULL;
496 nla_put_failure:
497 nlmsg_free(msg);
498 return -1;
499 }
500
501
502 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
503 {
504 struct nl_msg *msg;
505 struct wiphy_idx_data data = {
506 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
507 .macaddr = NULL,
508 };
509
510 msg = nlmsg_alloc();
511 if (!msg)
512 return -1;
513
514 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
515
516 if (nl80211_set_iface_id(msg, bss) < 0)
517 goto nla_put_failure;
518
519 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
520 return data.nlmode;
521 msg = NULL;
522 nla_put_failure:
523 nlmsg_free(msg);
524 return NL80211_IFTYPE_UNSPECIFIED;
525 }
526
527
528 static int nl80211_get_macaddr(struct i802_bss *bss)
529 {
530 struct nl_msg *msg;
531 struct wiphy_idx_data data = {
532 .macaddr = bss->addr,
533 };
534
535 msg = nlmsg_alloc();
536 if (!msg)
537 return NL80211_IFTYPE_UNSPECIFIED;
538
539 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
540 if (nl80211_set_iface_id(msg, bss) < 0)
541 goto nla_put_failure;
542
543 return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
544
545 nla_put_failure:
546 nlmsg_free(msg);
547 return NL80211_IFTYPE_UNSPECIFIED;
548 }
549
550
551 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
552 struct nl80211_wiphy_data *w)
553 {
554 struct nl_msg *msg;
555 int ret = -1;
556
557 msg = nlmsg_alloc();
558 if (!msg)
559 return -1;
560
561 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
562
563 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
564
565 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
566 msg = NULL;
567 if (ret) {
568 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
569 "failed: ret=%d (%s)",
570 ret, strerror(-ret));
571 goto nla_put_failure;
572 }
573 ret = 0;
574 nla_put_failure:
575 nlmsg_free(msg);
576 return ret;
577 }
578
579
580 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
581 {
582 struct nl80211_wiphy_data *w = eloop_ctx;
583 int res;
584
585 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
586
587 res = nl_recvmsgs(handle, w->nl_cb);
588 if (res < 0) {
589 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
590 __func__, res);
591 }
592 }
593
594
595 static int process_beacon_event(struct nl_msg *msg, void *arg)
596 {
597 struct nl80211_wiphy_data *w = arg;
598 struct wpa_driver_nl80211_data *drv;
599 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
600 struct nlattr *tb[NL80211_ATTR_MAX + 1];
601 union wpa_event_data event;
602
603 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
604 genlmsg_attrlen(gnlh, 0), NULL);
605
606 if (gnlh->cmd != NL80211_CMD_FRAME) {
607 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
608 gnlh->cmd);
609 return NL_SKIP;
610 }
611
612 if (!tb[NL80211_ATTR_FRAME])
613 return NL_SKIP;
614
615 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
616 wiphy_list) {
617 os_memset(&event, 0, sizeof(event));
618 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
619 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
620 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
621 }
622
623 return NL_SKIP;
624 }
625
626
627 static struct nl80211_wiphy_data *
628 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
629 {
630 static DEFINE_DL_LIST(nl80211_wiphys);
631 struct nl80211_wiphy_data *w;
632 int wiphy_idx, found = 0;
633 struct i802_bss *tmp_bss;
634
635 if (bss->wiphy_data != NULL)
636 return bss->wiphy_data;
637
638 wiphy_idx = nl80211_get_wiphy_index(bss);
639
640 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
641 if (w->wiphy_idx == wiphy_idx)
642 goto add;
643 }
644
645 /* alloc new one */
646 w = os_zalloc(sizeof(*w));
647 if (w == NULL)
648 return NULL;
649 w->wiphy_idx = wiphy_idx;
650 dl_list_init(&w->bsss);
651 dl_list_init(&w->drvs);
652
653 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
654 if (!w->nl_cb) {
655 os_free(w);
656 return NULL;
657 }
658 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
659 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
660 w);
661
662 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
663 "wiphy beacons");
664 if (w->nl_beacons == NULL) {
665 os_free(w);
666 return NULL;
667 }
668
669 if (nl80211_register_beacons(bss->drv, w)) {
670 nl_destroy_handles(&w->nl_beacons);
671 os_free(w);
672 return NULL;
673 }
674
675 nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
676
677 dl_list_add(&nl80211_wiphys, &w->list);
678
679 add:
680 /* drv entry for this bss already there? */
681 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
682 if (tmp_bss->drv == bss->drv) {
683 found = 1;
684 break;
685 }
686 }
687 /* if not add it */
688 if (!found)
689 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
690
691 dl_list_add(&w->bsss, &bss->wiphy_list);
692 bss->wiphy_data = w;
693 return w;
694 }
695
696
697 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
698 {
699 struct nl80211_wiphy_data *w = bss->wiphy_data;
700 struct i802_bss *tmp_bss;
701 int found = 0;
702
703 if (w == NULL)
704 return;
705 bss->wiphy_data = NULL;
706 dl_list_del(&bss->wiphy_list);
707
708 /* still any for this drv present? */
709 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
710 if (tmp_bss->drv == bss->drv) {
711 found = 1;
712 break;
713 }
714 }
715 /* if not remove it */
716 if (!found)
717 dl_list_del(&bss->drv->wiphy_list);
718
719 if (!dl_list_empty(&w->bsss))
720 return;
721
722 nl80211_destroy_eloop_handle(&w->nl_beacons);
723
724 nl_cb_put(w->nl_cb);
725 dl_list_del(&w->list);
726 os_free(w);
727 }
728
729
730 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
731 {
732 struct i802_bss *bss = priv;
733 struct wpa_driver_nl80211_data *drv = bss->drv;
734 if (!drv->associated)
735 return -1;
736 os_memcpy(bssid, drv->bssid, ETH_ALEN);
737 return 0;
738 }
739
740
741 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
742 {
743 struct i802_bss *bss = priv;
744 struct wpa_driver_nl80211_data *drv = bss->drv;
745 if (!drv->associated)
746 return -1;
747 os_memcpy(ssid, drv->ssid, drv->ssid_len);
748 return drv->ssid_len;
749 }
750
751
752 static void wpa_driver_nl80211_event_newlink(
753 struct wpa_driver_nl80211_data *drv, char *ifname)
754 {
755 union wpa_event_data event;
756
757 if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
758 if (if_nametoindex(drv->first_bss->ifname) == 0) {
759 wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
760 drv->first_bss->ifname);
761 return;
762 }
763 if (!drv->if_removed)
764 return;
765 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
766 drv->first_bss->ifname);
767 drv->if_removed = 0;
768 }
769
770 os_memset(&event, 0, sizeof(event));
771 os_strlcpy(event.interface_status.ifname, ifname,
772 sizeof(event.interface_status.ifname));
773 event.interface_status.ievent = EVENT_INTERFACE_ADDED;
774 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
775 }
776
777
778 static void wpa_driver_nl80211_event_dellink(
779 struct wpa_driver_nl80211_data *drv, char *ifname)
780 {
781 union wpa_event_data event;
782
783 if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
784 if (drv->if_removed) {
785 wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
786 ifname);
787 return;
788 }
789 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
790 ifname);
791 drv->if_removed = 1;
792 } else {
793 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
794 ifname);
795 }
796
797 os_memset(&event, 0, sizeof(event));
798 os_strlcpy(event.interface_status.ifname, ifname,
799 sizeof(event.interface_status.ifname));
800 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
801 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
802 }
803
804
805 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
806 u8 *buf, size_t len)
807 {
808 int attrlen, rta_len;
809 struct rtattr *attr;
810
811 attrlen = len;
812 attr = (struct rtattr *) buf;
813
814 rta_len = RTA_ALIGN(sizeof(struct rtattr));
815 while (RTA_OK(attr, attrlen)) {
816 if (attr->rta_type == IFLA_IFNAME) {
817 if (os_strcmp(((char *) attr) + rta_len,
818 drv->first_bss->ifname) == 0)
819 return 1;
820 else
821 break;
822 }
823 attr = RTA_NEXT(attr, attrlen);
824 }
825
826 return 0;
827 }
828
829
830 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
831 int ifindex, u8 *buf, size_t len)
832 {
833 if (drv->ifindex == ifindex)
834 return 1;
835
836 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
837 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
838 "interface");
839 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0);
840 return 1;
841 }
842
843 return 0;
844 }
845
846
847 static struct wpa_driver_nl80211_data *
848 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
849 {
850 struct wpa_driver_nl80211_data *drv;
851 dl_list_for_each(drv, &global->interfaces,
852 struct wpa_driver_nl80211_data, list) {
853 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
854 have_ifidx(drv, idx))
855 return drv;
856 }
857 return NULL;
858 }
859
860
861 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
862 struct ifinfomsg *ifi,
863 u8 *buf, size_t len)
864 {
865 struct nl80211_global *global = ctx;
866 struct wpa_driver_nl80211_data *drv;
867 int attrlen;
868 struct rtattr *attr;
869 u32 brid = 0;
870 char namebuf[IFNAMSIZ];
871 char ifname[IFNAMSIZ + 1];
872 char extra[100], *pos, *end;
873
874 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
875 if (!drv) {
876 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
877 ifi->ifi_index);
878 return;
879 }
880
881 extra[0] = '\0';
882 pos = extra;
883 end = pos + sizeof(extra);
884 ifname[0] = '\0';
885
886 attrlen = len;
887 attr = (struct rtattr *) buf;
888 while (RTA_OK(attr, attrlen)) {
889 switch (attr->rta_type) {
890 case IFLA_IFNAME:
891 if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
892 break;
893 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
894 ifname[RTA_PAYLOAD(attr)] = '\0';
895 break;
896 case IFLA_MASTER:
897 brid = nla_get_u32((struct nlattr *) attr);
898 pos += os_snprintf(pos, end - pos, " master=%u", brid);
899 break;
900 case IFLA_WIRELESS:
901 pos += os_snprintf(pos, end - pos, " wext");
902 break;
903 case IFLA_OPERSTATE:
904 pos += os_snprintf(pos, end - pos, " operstate=%u",
905 nla_get_u32((struct nlattr *) attr));
906 break;
907 case IFLA_LINKMODE:
908 pos += os_snprintf(pos, end - pos, " linkmode=%u",
909 nla_get_u32((struct nlattr *) attr));
910 break;
911 }
912 attr = RTA_NEXT(attr, attrlen);
913 }
914 extra[sizeof(extra) - 1] = '\0';
915
916 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
917 ifi->ifi_index, ifname, extra, ifi->ifi_family,
918 ifi->ifi_flags,
919 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
920 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
921 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
922 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
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 down "
929 "event since interface %s is up", namebuf);
930 return;
931 }
932 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
933 if (drv->ignore_if_down_event) {
934 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
935 "event generated by mode change");
936 drv->ignore_if_down_event = 0;
937 } else {
938 drv->if_disabled = 1;
939 wpa_supplicant_event(drv->ctx,
940 EVENT_INTERFACE_DISABLED, NULL);
941
942 /*
943 * Try to get drv again, since it may be removed as
944 * part of the EVENT_INTERFACE_DISABLED handling for
945 * dynamic interfaces
946 */
947 drv = nl80211_find_drv(global, ifi->ifi_index,
948 buf, len);
949 if (!drv)
950 return;
951 }
952 }
953
954 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
955 if (if_indextoname(ifi->ifi_index, namebuf) &&
956 linux_iface_up(drv->global->ioctl_sock,
957 drv->first_bss->ifname) == 0) {
958 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
959 "event since interface %s is down",
960 namebuf);
961 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
962 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
963 "event since interface %s does not exist",
964 drv->first_bss->ifname);
965 } else if (drv->if_removed) {
966 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
967 "event since interface %s is marked "
968 "removed", drv->first_bss->ifname);
969 } else {
970 struct i802_bss *bss;
971 u8 addr[ETH_ALEN];
972
973 /* Re-read MAC address as it may have changed */
974 bss = get_bss_ifindex(drv, ifi->ifi_index);
975 if (bss &&
976 linux_get_ifhwaddr(drv->global->ioctl_sock,
977 bss->ifname, addr) < 0) {
978 wpa_printf(MSG_DEBUG,
979 "nl80211: %s: failed to re-read MAC address",
980 bss->ifname);
981 } else if (bss &&
982 os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
983 wpa_printf(MSG_DEBUG,
984 "nl80211: Own MAC address on ifindex %d (%s) changed from "
985 MACSTR " to " MACSTR,
986 ifi->ifi_index, bss->ifname,
987 MAC2STR(bss->addr),
988 MAC2STR(addr));
989 os_memcpy(bss->addr, addr, ETH_ALEN);
990 }
991
992 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
993 drv->if_disabled = 0;
994 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
995 NULL);
996 }
997 }
998
999 /*
1000 * Some drivers send the association event before the operup event--in
1001 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1002 * fails. This will hit us when wpa_supplicant does not need to do
1003 * IEEE 802.1X authentication
1004 */
1005 if (drv->operstate == 1 &&
1006 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1007 !(ifi->ifi_flags & IFF_RUNNING)) {
1008 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1009 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1010 -1, IF_OPER_UP);
1011 }
1012
1013 if (ifname[0])
1014 wpa_driver_nl80211_event_newlink(drv, ifname);
1015
1016 if (ifi->ifi_family == AF_BRIDGE && brid) {
1017 struct i802_bss *bss;
1018
1019 /* device has been added to bridge */
1020 if_indextoname(brid, namebuf);
1021 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1022 brid, namebuf);
1023 add_ifidx(drv, brid);
1024
1025 for (bss = drv->first_bss; bss; bss = bss->next) {
1026 if (os_strcmp(ifname, bss->ifname) == 0) {
1027 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1028 break;
1029 }
1030 }
1031 }
1032 }
1033
1034
1035 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1036 struct ifinfomsg *ifi,
1037 u8 *buf, size_t len)
1038 {
1039 struct nl80211_global *global = ctx;
1040 struct wpa_driver_nl80211_data *drv;
1041 int attrlen;
1042 struct rtattr *attr;
1043 u32 brid = 0;
1044 char ifname[IFNAMSIZ + 1];
1045 char extra[100], *pos, *end;
1046
1047 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1048 if (!drv) {
1049 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1050 ifi->ifi_index);
1051 return;
1052 }
1053
1054 extra[0] = '\0';
1055 pos = extra;
1056 end = pos + sizeof(extra);
1057 ifname[0] = '\0';
1058
1059 attrlen = len;
1060 attr = (struct rtattr *) buf;
1061 while (RTA_OK(attr, attrlen)) {
1062 switch (attr->rta_type) {
1063 case IFLA_IFNAME:
1064 if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1065 break;
1066 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1067 ifname[RTA_PAYLOAD(attr)] = '\0';
1068 break;
1069 case IFLA_MASTER:
1070 brid = nla_get_u32((struct nlattr *) attr);
1071 pos += os_snprintf(pos, end - pos, " master=%u", brid);
1072 break;
1073 case IFLA_OPERSTATE:
1074 pos += os_snprintf(pos, end - pos, " operstate=%u",
1075 nla_get_u32((struct nlattr *) attr));
1076 break;
1077 case IFLA_LINKMODE:
1078 pos += os_snprintf(pos, end - pos, " linkmode=%u",
1079 nla_get_u32((struct nlattr *) attr));
1080 break;
1081 }
1082 attr = RTA_NEXT(attr, attrlen);
1083 }
1084 extra[sizeof(extra) - 1] = '\0';
1085
1086 wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1087 ifi->ifi_index, ifname, extra, ifi->ifi_family,
1088 ifi->ifi_flags,
1089 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1090 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1091 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1092 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1093
1094 if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1095 wpa_driver_nl80211_event_dellink(drv, ifname);
1096
1097 if (ifi->ifi_family == AF_BRIDGE && brid) {
1098 /* device has been removed from bridge */
1099 char namebuf[IFNAMSIZ];
1100 if_indextoname(brid, namebuf);
1101 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1102 "%s", brid, namebuf);
1103 del_ifidx(drv, brid);
1104 }
1105 }
1106
1107
1108 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1109 {
1110 struct nl_msg *msg;
1111 int ret;
1112 struct nl80211_bss_info_arg arg;
1113
1114 os_memset(&arg, 0, sizeof(arg));
1115 msg = nlmsg_alloc();
1116 if (!msg)
1117 goto nla_put_failure;
1118
1119 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1120 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1121
1122 arg.drv = drv;
1123 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1124 msg = NULL;
1125 if (ret == 0) {
1126 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1127 arg.ibss_freq : arg.assoc_freq;
1128 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1129 "associated BSS from scan results: %u MHz", freq);
1130 if (freq)
1131 drv->assoc_freq = freq;
1132 return drv->assoc_freq;
1133 }
1134 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1135 "(%s)", ret, strerror(-ret));
1136 nla_put_failure:
1137 nlmsg_free(msg);
1138 return drv->assoc_freq;
1139 }
1140
1141
1142 static int get_link_signal(struct nl_msg *msg, void *arg)
1143 {
1144 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1145 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1146 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1147 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1148 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1149 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1150 };
1151 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1152 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1153 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1154 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1155 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1156 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1157 };
1158 struct wpa_signal_info *sig_change = arg;
1159
1160 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1161 genlmsg_attrlen(gnlh, 0), NULL);
1162 if (!tb[NL80211_ATTR_STA_INFO] ||
1163 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1164 tb[NL80211_ATTR_STA_INFO], policy))
1165 return NL_SKIP;
1166 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1167 return NL_SKIP;
1168
1169 sig_change->current_signal =
1170 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1171
1172 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1173 sig_change->avg_signal =
1174 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1175 else
1176 sig_change->avg_signal = 0;
1177
1178 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1179 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1180 sinfo[NL80211_STA_INFO_TX_BITRATE],
1181 rate_policy)) {
1182 sig_change->current_txrate = 0;
1183 } else {
1184 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1185 sig_change->current_txrate =
1186 nla_get_u16(rinfo[
1187 NL80211_RATE_INFO_BITRATE]) * 100;
1188 }
1189 }
1190 }
1191
1192 return NL_SKIP;
1193 }
1194
1195
1196 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1197 struct wpa_signal_info *sig)
1198 {
1199 struct nl_msg *msg;
1200
1201 sig->current_signal = -9999;
1202 sig->current_txrate = 0;
1203
1204 msg = nlmsg_alloc();
1205 if (!msg)
1206 return -ENOMEM;
1207
1208 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1209
1210 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1211 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1212
1213 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1214 nla_put_failure:
1215 nlmsg_free(msg);
1216 return -ENOBUFS;
1217 }
1218
1219
1220 static int get_link_noise(struct nl_msg *msg, void *arg)
1221 {
1222 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1223 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1224 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1225 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1226 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1227 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1228 };
1229 struct wpa_signal_info *sig_change = arg;
1230
1231 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1232 genlmsg_attrlen(gnlh, 0), NULL);
1233
1234 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1235 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1236 return NL_SKIP;
1237 }
1238
1239 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1240 tb[NL80211_ATTR_SURVEY_INFO],
1241 survey_policy)) {
1242 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1243 "attributes!");
1244 return NL_SKIP;
1245 }
1246
1247 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1248 return NL_SKIP;
1249
1250 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1251 sig_change->frequency)
1252 return NL_SKIP;
1253
1254 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1255 return NL_SKIP;
1256
1257 sig_change->current_noise =
1258 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1259
1260 return NL_SKIP;
1261 }
1262
1263
1264 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1265 struct wpa_signal_info *sig_change)
1266 {
1267 struct nl_msg *msg;
1268
1269 sig_change->current_noise = 9999;
1270 sig_change->frequency = drv->assoc_freq;
1271
1272 msg = nlmsg_alloc();
1273 if (!msg)
1274 return -ENOMEM;
1275
1276 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1277
1278 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1279
1280 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1281 nla_put_failure:
1282 nlmsg_free(msg);
1283 return -ENOBUFS;
1284 }
1285
1286
1287 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1288 {
1289 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1290 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1291 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1292 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1293 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1294 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1295 };
1296 struct wpa_scan_results *scan_results = arg;
1297 struct wpa_scan_res *scan_res;
1298 size_t i;
1299
1300 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1301 genlmsg_attrlen(gnlh, 0), NULL);
1302
1303 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1304 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1305 return NL_SKIP;
1306 }
1307
1308 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1309 tb[NL80211_ATTR_SURVEY_INFO],
1310 survey_policy)) {
1311 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1312 "attributes");
1313 return NL_SKIP;
1314 }
1315
1316 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1317 return NL_SKIP;
1318
1319 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1320 return NL_SKIP;
1321
1322 for (i = 0; i < scan_results->num; ++i) {
1323 scan_res = scan_results->res[i];
1324 if (!scan_res)
1325 continue;
1326 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1327 scan_res->freq)
1328 continue;
1329 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1330 continue;
1331 scan_res->noise = (s8)
1332 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1333 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1334 }
1335
1336 return NL_SKIP;
1337 }
1338
1339
1340 static int nl80211_get_noise_for_scan_results(
1341 struct wpa_driver_nl80211_data *drv,
1342 struct wpa_scan_results *scan_res)
1343 {
1344 struct nl_msg *msg;
1345
1346 msg = nlmsg_alloc();
1347 if (!msg)
1348 return -ENOMEM;
1349
1350 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1351
1352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1353
1354 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1355 scan_res);
1356 nla_put_failure:
1357 nlmsg_free(msg);
1358 return -ENOBUFS;
1359 }
1360
1361
1362 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1363 void *handle)
1364 {
1365 struct nl_cb *cb = eloop_ctx;
1366 int res;
1367
1368 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1369
1370 res = nl_recvmsgs(handle, cb);
1371 if (res < 0) {
1372 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1373 __func__, res);
1374 }
1375 }
1376
1377
1378 /**
1379 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1380 * @priv: driver_nl80211 private data
1381 * @alpha2_arg: country to which to switch to
1382 * Returns: 0 on success, -1 on failure
1383 *
1384 * This asks nl80211 to set the regulatory domain for given
1385 * country ISO / IEC alpha2.
1386 */
1387 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1388 {
1389 struct i802_bss *bss = priv;
1390 struct wpa_driver_nl80211_data *drv = bss->drv;
1391 char alpha2[3];
1392 struct nl_msg *msg;
1393
1394 msg = nlmsg_alloc();
1395 if (!msg)
1396 return -ENOMEM;
1397
1398 alpha2[0] = alpha2_arg[0];
1399 alpha2[1] = alpha2_arg[1];
1400 alpha2[2] = '\0';
1401
1402 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1403
1404 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1405 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1406 return -EINVAL;
1407 return 0;
1408 nla_put_failure:
1409 nlmsg_free(msg);
1410 return -EINVAL;
1411 }
1412
1413
1414 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1415 {
1416 char *alpha2 = arg;
1417 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1418 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1419
1420 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1421 genlmsg_attrlen(gnlh, 0), NULL);
1422 if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1423 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1424 return NL_SKIP;
1425 }
1426 os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1427 return NL_SKIP;
1428 }
1429
1430
1431 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1432 {
1433 struct i802_bss *bss = priv;
1434 struct wpa_driver_nl80211_data *drv = bss->drv;
1435 struct nl_msg *msg;
1436 int ret;
1437
1438 msg = nlmsg_alloc();
1439 if (!msg)
1440 return -ENOMEM;
1441
1442 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1443 alpha2[0] = '\0';
1444 ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1445 if (!alpha2[0])
1446 ret = -1;
1447
1448 return ret;
1449 }
1450
1451
1452 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1453 {
1454 int ret;
1455
1456 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1457 if (global->nl_cb == NULL) {
1458 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1459 "callbacks");
1460 return -1;
1461 }
1462
1463 global->nl = nl_create_handle(global->nl_cb, "nl");
1464 if (global->nl == NULL)
1465 goto err;
1466
1467 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1468 if (global->nl80211_id < 0) {
1469 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1470 "found");
1471 goto err;
1472 }
1473
1474 global->nl_event = nl_create_handle(global->nl_cb, "event");
1475 if (global->nl_event == NULL)
1476 goto err;
1477
1478 ret = nl_get_multicast_id(global, "nl80211", "scan");
1479 if (ret >= 0)
1480 ret = nl_socket_add_membership(global->nl_event, ret);
1481 if (ret < 0) {
1482 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1483 "membership for scan events: %d (%s)",
1484 ret, strerror(-ret));
1485 goto err;
1486 }
1487
1488 ret = nl_get_multicast_id(global, "nl80211", "mlme");
1489 if (ret >= 0)
1490 ret = nl_socket_add_membership(global->nl_event, ret);
1491 if (ret < 0) {
1492 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1493 "membership for mlme events: %d (%s)",
1494 ret, strerror(-ret));
1495 goto err;
1496 }
1497
1498 ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1499 if (ret >= 0)
1500 ret = nl_socket_add_membership(global->nl_event, ret);
1501 if (ret < 0) {
1502 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1503 "membership for regulatory events: %d (%s)",
1504 ret, strerror(-ret));
1505 /* Continue without regulatory events */
1506 }
1507
1508 ret = nl_get_multicast_id(global, "nl80211", "vendor");
1509 if (ret >= 0)
1510 ret = nl_socket_add_membership(global->nl_event, ret);
1511 if (ret < 0) {
1512 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1513 "membership for vendor events: %d (%s)",
1514 ret, strerror(-ret));
1515 /* Continue without vendor events */
1516 }
1517
1518 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1519 no_seq_check, NULL);
1520 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1521 process_global_event, global);
1522
1523 nl80211_register_eloop_read(&global->nl_event,
1524 wpa_driver_nl80211_event_receive,
1525 global->nl_cb);
1526
1527 return 0;
1528
1529 err:
1530 nl_destroy_handles(&global->nl_event);
1531 nl_destroy_handles(&global->nl);
1532 nl_cb_put(global->nl_cb);
1533 global->nl_cb = NULL;
1534 return -1;
1535 }
1536
1537
1538 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1539 {
1540 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1541 if (!drv->nl_cb) {
1542 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1543 return -1;
1544 }
1545
1546 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1547 no_seq_check, NULL);
1548 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1549 process_drv_event, drv);
1550
1551 return 0;
1552 }
1553
1554
1555 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1556 {
1557 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1558 /*
1559 * This may be for any interface; use ifdown event to disable
1560 * interface.
1561 */
1562 }
1563
1564
1565 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1566 {
1567 struct wpa_driver_nl80211_data *drv = ctx;
1568 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1569 if (i802_set_iface_flags(drv->first_bss, 1)) {
1570 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1571 "after rfkill unblock");
1572 return;
1573 }
1574 /* rtnetlink ifup handler will report interface as enabled */
1575 }
1576
1577
1578 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1579 void *eloop_ctx,
1580 void *handle)
1581 {
1582 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1583 u8 data[2048];
1584 struct msghdr msg;
1585 struct iovec entry;
1586 u8 control[512];
1587 struct cmsghdr *cmsg;
1588 int res, found_ee = 0, found_wifi = 0, acked = 0;
1589 union wpa_event_data event;
1590
1591 memset(&msg, 0, sizeof(msg));
1592 msg.msg_iov = &entry;
1593 msg.msg_iovlen = 1;
1594 entry.iov_base = data;
1595 entry.iov_len = sizeof(data);
1596 msg.msg_control = &control;
1597 msg.msg_controllen = sizeof(control);
1598
1599 res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1600 /* if error or not fitting 802.3 header, return */
1601 if (res < 14)
1602 return;
1603
1604 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1605 {
1606 if (cmsg->cmsg_level == SOL_SOCKET &&
1607 cmsg->cmsg_type == SCM_WIFI_STATUS) {
1608 int *ack;
1609
1610 found_wifi = 1;
1611 ack = (void *)CMSG_DATA(cmsg);
1612 acked = *ack;
1613 }
1614
1615 if (cmsg->cmsg_level == SOL_PACKET &&
1616 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1617 struct sock_extended_err *err =
1618 (struct sock_extended_err *)CMSG_DATA(cmsg);
1619
1620 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1621 found_ee = 1;
1622 }
1623 }
1624
1625 if (!found_ee || !found_wifi)
1626 return;
1627
1628 memset(&event, 0, sizeof(event));
1629 event.eapol_tx_status.dst = data;
1630 event.eapol_tx_status.data = data + 14;
1631 event.eapol_tx_status.data_len = res - 14;
1632 event.eapol_tx_status.ack = acked;
1633 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1634 }
1635
1636
1637 static int nl80211_init_bss(struct i802_bss *bss)
1638 {
1639 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1640 if (!bss->nl_cb)
1641 return -1;
1642
1643 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1644 no_seq_check, NULL);
1645 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1646 process_bss_event, bss);
1647
1648 return 0;
1649 }
1650
1651
1652 static void nl80211_destroy_bss(struct i802_bss *bss)
1653 {
1654 nl_cb_put(bss->nl_cb);
1655 bss->nl_cb = NULL;
1656 }
1657
1658
1659 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1660 void *global_priv, int hostapd,
1661 const u8 *set_addr)
1662 {
1663 struct wpa_driver_nl80211_data *drv;
1664 struct rfkill_config *rcfg;
1665 struct i802_bss *bss;
1666
1667 if (global_priv == NULL)
1668 return NULL;
1669 drv = os_zalloc(sizeof(*drv));
1670 if (drv == NULL)
1671 return NULL;
1672 drv->global = global_priv;
1673 drv->ctx = ctx;
1674 drv->hostapd = !!hostapd;
1675 drv->eapol_sock = -1;
1676 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1677 drv->if_indices = drv->default_if_indices;
1678
1679 drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1680 if (!drv->first_bss) {
1681 os_free(drv);
1682 return NULL;
1683 }
1684 bss = drv->first_bss;
1685 bss->drv = drv;
1686 bss->ctx = ctx;
1687
1688 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1689 drv->monitor_ifidx = -1;
1690 drv->monitor_sock = -1;
1691 drv->eapol_tx_sock = -1;
1692 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1693
1694 if (wpa_driver_nl80211_init_nl(drv)) {
1695 os_free(drv);
1696 return NULL;
1697 }
1698
1699 if (nl80211_init_bss(bss))
1700 goto failed;
1701
1702 rcfg = os_zalloc(sizeof(*rcfg));
1703 if (rcfg == NULL)
1704 goto failed;
1705 rcfg->ctx = drv;
1706 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1707 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1708 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1709 drv->rfkill = rfkill_init(rcfg);
1710 if (drv->rfkill == NULL) {
1711 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1712 os_free(rcfg);
1713 }
1714
1715 if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1716 drv->start_iface_up = 1;
1717
1718 if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1))
1719 goto failed;
1720
1721 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1722 if (drv->eapol_tx_sock < 0)
1723 goto failed;
1724
1725 if (drv->data_tx_status) {
1726 int enabled = 1;
1727
1728 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1729 &enabled, sizeof(enabled)) < 0) {
1730 wpa_printf(MSG_DEBUG,
1731 "nl80211: wifi status sockopt failed\n");
1732 drv->data_tx_status = 0;
1733 if (!drv->use_monitor)
1734 drv->capa.flags &=
1735 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1736 } else {
1737 eloop_register_read_sock(drv->eapol_tx_sock,
1738 wpa_driver_nl80211_handle_eapol_tx_status,
1739 drv, NULL);
1740 }
1741 }
1742
1743 if (drv->global) {
1744 dl_list_add(&drv->global->interfaces, &drv->list);
1745 drv->in_interface_list = 1;
1746 }
1747
1748 return bss;
1749
1750 failed:
1751 wpa_driver_nl80211_deinit(bss);
1752 return NULL;
1753 }
1754
1755
1756 /**
1757 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1758 * @ctx: context to be used when calling wpa_supplicant functions,
1759 * e.g., wpa_supplicant_event()
1760 * @ifname: interface name, e.g., wlan0
1761 * @global_priv: private driver global data from global_init()
1762 * Returns: Pointer to private data, %NULL on failure
1763 */
1764 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1765 void *global_priv)
1766 {
1767 return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL);
1768 }
1769
1770
1771 static int nl80211_register_frame(struct i802_bss *bss,
1772 struct nl_handle *nl_handle,
1773 u16 type, const u8 *match, size_t match_len)
1774 {
1775 struct wpa_driver_nl80211_data *drv = bss->drv;
1776 struct nl_msg *msg;
1777 int ret = -1;
1778 char buf[30];
1779
1780 msg = nlmsg_alloc();
1781 if (!msg)
1782 return -1;
1783
1784 buf[0] = '\0';
1785 wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1786 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1787 type, fc2str(type), nl_handle, buf);
1788
1789 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
1790
1791 if (nl80211_set_iface_id(msg, bss) < 0)
1792 goto nla_put_failure;
1793
1794 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1795 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1796
1797 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1798 msg = NULL;
1799 if (ret) {
1800 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1801 "failed (type=%u): ret=%d (%s)",
1802 type, ret, strerror(-ret));
1803 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1804 match, match_len);
1805 goto nla_put_failure;
1806 }
1807 ret = 0;
1808 nla_put_failure:
1809 nlmsg_free(msg);
1810 return ret;
1811 }
1812
1813
1814 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1815 {
1816 struct wpa_driver_nl80211_data *drv = bss->drv;
1817
1818 if (bss->nl_mgmt) {
1819 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1820 "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1821 return -1;
1822 }
1823
1824 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1825 if (bss->nl_mgmt == NULL)
1826 return -1;
1827
1828 return 0;
1829 }
1830
1831
1832 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1833 {
1834 nl80211_register_eloop_read(&bss->nl_mgmt,
1835 wpa_driver_nl80211_event_receive,
1836 bss->nl_cb);
1837 }
1838
1839
1840 static int nl80211_register_action_frame(struct i802_bss *bss,
1841 const u8 *match, size_t match_len)
1842 {
1843 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1844 return nl80211_register_frame(bss, bss->nl_mgmt,
1845 type, match, match_len);
1846 }
1847
1848
1849 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1850 {
1851 struct wpa_driver_nl80211_data *drv = bss->drv;
1852 int ret = 0;
1853
1854 if (nl80211_alloc_mgmt_handle(bss))
1855 return -1;
1856 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1857 "handle %p", bss->nl_mgmt);
1858
1859 if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1860 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1861
1862 /* register for any AUTH message */
1863 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1864 }
1865
1866 #ifdef CONFIG_INTERWORKING
1867 /* QoS Map Configure */
1868 if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1869 ret = -1;
1870 #endif /* CONFIG_INTERWORKING */
1871 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1872 /* GAS Initial Request */
1873 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1874 ret = -1;
1875 /* GAS Initial Response */
1876 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1877 ret = -1;
1878 /* GAS Comeback Request */
1879 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1880 ret = -1;
1881 /* GAS Comeback Response */
1882 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1883 ret = -1;
1884 /* Protected GAS Initial Request */
1885 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1886 ret = -1;
1887 /* Protected GAS Initial Response */
1888 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1889 ret = -1;
1890 /* Protected GAS Comeback Request */
1891 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1892 ret = -1;
1893 /* Protected GAS Comeback Response */
1894 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1895 ret = -1;
1896 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1897 #ifdef CONFIG_P2P
1898 /* P2P Public Action */
1899 if (nl80211_register_action_frame(bss,
1900 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1901 6) < 0)
1902 ret = -1;
1903 /* P2P Action */
1904 if (nl80211_register_action_frame(bss,
1905 (u8 *) "\x7f\x50\x6f\x9a\x09",
1906 5) < 0)
1907 ret = -1;
1908 #endif /* CONFIG_P2P */
1909 #ifdef CONFIG_IEEE80211W
1910 /* SA Query Response */
1911 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1912 ret = -1;
1913 #endif /* CONFIG_IEEE80211W */
1914 #ifdef CONFIG_TDLS
1915 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1916 /* TDLS Discovery Response */
1917 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1918 0)
1919 ret = -1;
1920 }
1921 #endif /* CONFIG_TDLS */
1922
1923 /* FT Action frames */
1924 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1925 ret = -1;
1926 else
1927 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1928 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1929
1930 /* WNM - BSS Transition Management Request */
1931 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1932 ret = -1;
1933 /* WNM-Sleep Mode Response */
1934 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1935 ret = -1;
1936
1937 #ifdef CONFIG_HS20
1938 /* WNM-Notification */
1939 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1940 ret = -1;
1941 #endif /* CONFIG_HS20 */
1942
1943 /* WMM-AC ADDTS Response */
1944 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1945 return -1;
1946
1947 /* WMM-AC DELTS */
1948 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1949 return -1;
1950
1951 /* Radio Measurement - Neighbor Report Response */
1952 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1953 ret = -1;
1954
1955 /* Radio Measurement - Link Measurement Request */
1956 if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1957 (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1958 ret = -1;
1959
1960 nl80211_mgmt_handle_register_eloop(bss);
1961
1962 return ret;
1963 }
1964
1965
1966 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1967 {
1968 int ret = 0;
1969
1970 if (nl80211_alloc_mgmt_handle(bss))
1971 return -1;
1972
1973 wpa_printf(MSG_DEBUG,
1974 "nl80211: Subscribe to mgmt frames with mesh handle %p",
1975 bss->nl_mgmt);
1976
1977 /* Auth frames for mesh SAE */
1978 if (nl80211_register_frame(bss, bss->nl_mgmt,
1979 (WLAN_FC_TYPE_MGMT << 2) |
1980 (WLAN_FC_STYPE_AUTH << 4),
1981 NULL, 0) < 0)
1982 ret = -1;
1983
1984 /* Mesh peering open */
1985 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1986 ret = -1;
1987 /* Mesh peering confirm */
1988 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1989 ret = -1;
1990 /* Mesh peering close */
1991 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1992 ret = -1;
1993
1994 nl80211_mgmt_handle_register_eloop(bss);
1995
1996 return ret;
1997 }
1998
1999
2000 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2001 {
2002 struct wpa_driver_nl80211_data *drv = bss->drv;
2003 struct nl_msg *msg;
2004 int ret = -1;
2005
2006 msg = nlmsg_alloc();
2007 if (!msg)
2008 return -1;
2009
2010 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
2011
2012 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
2013
2014 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
2015 msg = NULL;
2016 if (ret) {
2017 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2018 "failed: ret=%d (%s)",
2019 ret, strerror(-ret));
2020 goto nla_put_failure;
2021 }
2022 ret = 0;
2023 nla_put_failure:
2024 nlmsg_free(msg);
2025 return ret;
2026 }
2027
2028
2029 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2030 {
2031 static const int stypes[] = {
2032 WLAN_FC_STYPE_AUTH,
2033 WLAN_FC_STYPE_ASSOC_REQ,
2034 WLAN_FC_STYPE_REASSOC_REQ,
2035 WLAN_FC_STYPE_DISASSOC,
2036 WLAN_FC_STYPE_DEAUTH,
2037 WLAN_FC_STYPE_ACTION,
2038 WLAN_FC_STYPE_PROBE_REQ,
2039 /* Beacon doesn't work as mac80211 doesn't currently allow
2040 * it, but it wouldn't really be the right thing anyway as
2041 * it isn't per interface ... maybe just dump the scan
2042 * results periodically for OLBC?
2043 */
2044 /* WLAN_FC_STYPE_BEACON, */
2045 };
2046 unsigned int i;
2047
2048 if (nl80211_alloc_mgmt_handle(bss))
2049 return -1;
2050 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2051 "handle %p", bss->nl_mgmt);
2052
2053 for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2054 if (nl80211_register_frame(bss, bss->nl_mgmt,
2055 (WLAN_FC_TYPE_MGMT << 2) |
2056 (stypes[i] << 4),
2057 NULL, 0) < 0) {
2058 goto out_err;
2059 }
2060 }
2061
2062 if (nl80211_register_spurious_class3(bss))
2063 goto out_err;
2064
2065 if (nl80211_get_wiphy_data_ap(bss) == NULL)
2066 goto out_err;
2067
2068 nl80211_mgmt_handle_register_eloop(bss);
2069 return 0;
2070
2071 out_err:
2072 nl_destroy_handles(&bss->nl_mgmt);
2073 return -1;
2074 }
2075
2076
2077 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2078 {
2079 if (nl80211_alloc_mgmt_handle(bss))
2080 return -1;
2081 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2082 "handle %p (device SME)", bss->nl_mgmt);
2083
2084 if (nl80211_register_frame(bss, bss->nl_mgmt,
2085 (WLAN_FC_TYPE_MGMT << 2) |
2086 (WLAN_FC_STYPE_ACTION << 4),
2087 NULL, 0) < 0)
2088 goto out_err;
2089
2090 nl80211_mgmt_handle_register_eloop(bss);
2091 return 0;
2092
2093 out_err:
2094 nl_destroy_handles(&bss->nl_mgmt);
2095 return -1;
2096 }
2097
2098
2099 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2100 {
2101 if (bss->nl_mgmt == NULL)
2102 return;
2103 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2104 "(%s)", bss->nl_mgmt, reason);
2105 nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2106
2107 nl80211_put_wiphy_data_ap(bss);
2108 }
2109
2110
2111 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2112 {
2113 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2114 }
2115
2116
2117 static void nl80211_del_p2pdev(struct i802_bss *bss)
2118 {
2119 struct wpa_driver_nl80211_data *drv = bss->drv;
2120 struct nl_msg *msg;
2121 int ret;
2122
2123 msg = nlmsg_alloc();
2124 if (!msg)
2125 return;
2126
2127 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
2128 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2129
2130 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2131 msg = NULL;
2132
2133 wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2134 bss->ifname, (long long unsigned int) bss->wdev_id,
2135 strerror(-ret));
2136
2137 nla_put_failure:
2138 nlmsg_free(msg);
2139 }
2140
2141
2142 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2143 {
2144 struct wpa_driver_nl80211_data *drv = bss->drv;
2145 struct nl_msg *msg;
2146 int ret = -1;
2147
2148 msg = nlmsg_alloc();
2149 if (!msg)
2150 return -1;
2151
2152 if (start)
2153 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE);
2154 else
2155 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE);
2156
2157 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2158
2159 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2160 msg = NULL;
2161
2162 wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2163 start ? "Start" : "Stop",
2164 bss->ifname, (long long unsigned int) bss->wdev_id,
2165 strerror(-ret));
2166
2167 nla_put_failure:
2168 nlmsg_free(msg);
2169 return ret;
2170 }
2171
2172
2173 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2174 {
2175 enum nl80211_iftype nlmode;
2176
2177 nlmode = nl80211_get_ifmode(bss);
2178 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2179 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2180 bss->ifname, up);
2181 }
2182
2183 /* P2P Device has start/stop which is equivalent */
2184 return nl80211_set_p2pdev(bss, up);
2185 }
2186
2187
2188 static int
2189 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2190 const u8 *set_addr, int first)
2191 {
2192 struct i802_bss *bss = drv->first_bss;
2193 int send_rfkill_event = 0;
2194 enum nl80211_iftype nlmode;
2195
2196 drv->ifindex = if_nametoindex(bss->ifname);
2197 bss->ifindex = drv->ifindex;
2198 bss->wdev_id = drv->global->if_add_wdevid;
2199 bss->wdev_id_set = drv->global->if_add_wdevid_set;
2200
2201 bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2202 bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2203 drv->global->if_add_wdevid_set = 0;
2204
2205 if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2206 bss->static_ap = 1;
2207
2208 if (wpa_driver_nl80211_capa(drv))
2209 return -1;
2210
2211 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2212 bss->ifname, drv->phyname);
2213
2214 if (set_addr &&
2215 (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2216 linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2217 set_addr)))
2218 return -1;
2219
2220 if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2221 drv->start_mode_ap = 1;
2222
2223 if (drv->hostapd || bss->static_ap)
2224 nlmode = NL80211_IFTYPE_AP;
2225 else if (bss->if_dynamic)
2226 nlmode = nl80211_get_ifmode(bss);
2227 else
2228 nlmode = NL80211_IFTYPE_STATION;
2229
2230 if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2231 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2232 return -1;
2233 }
2234
2235 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2236 nl80211_get_macaddr(bss);
2237
2238 if (!rfkill_is_blocked(drv->rfkill)) {
2239 int ret = i802_set_iface_flags(bss, 1);
2240 if (ret) {
2241 wpa_printf(MSG_ERROR, "nl80211: Could not set "
2242 "interface '%s' UP", bss->ifname);
2243 return ret;
2244 }
2245 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2246 return ret;
2247 } else {
2248 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2249 "interface '%s' due to rfkill", bss->ifname);
2250 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2251 return 0;
2252 drv->if_disabled = 1;
2253 send_rfkill_event = 1;
2254 }
2255
2256 if (!drv->hostapd)
2257 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2258 1, IF_OPER_DORMANT);
2259
2260 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2261 bss->addr))
2262 return -1;
2263 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2264
2265 if (send_rfkill_event) {
2266 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2267 drv, drv->ctx);
2268 }
2269
2270 return 0;
2271 }
2272
2273
2274 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2275 {
2276 struct nl_msg *msg;
2277
2278 msg = nlmsg_alloc();
2279 if (!msg)
2280 return -ENOMEM;
2281
2282 wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2283 drv->ifindex);
2284 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2285 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2286
2287 return send_and_recv_msgs(drv, msg, NULL, NULL);
2288 nla_put_failure:
2289 nlmsg_free(msg);
2290 return -ENOBUFS;
2291 }
2292
2293
2294 /**
2295 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2296 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2297 *
2298 * Shut down driver interface and processing of driver events. Free
2299 * private data buffer if one was allocated in wpa_driver_nl80211_init().
2300 */
2301 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2302 {
2303 struct wpa_driver_nl80211_data *drv = bss->drv;
2304
2305 bss->in_deinit = 1;
2306 if (drv->data_tx_status)
2307 eloop_unregister_read_sock(drv->eapol_tx_sock);
2308 if (drv->eapol_tx_sock >= 0)
2309 close(drv->eapol_tx_sock);
2310
2311 if (bss->nl_preq)
2312 wpa_driver_nl80211_probe_req_report(bss, 0);
2313 if (bss->added_if_into_bridge) {
2314 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2315 bss->ifname) < 0)
2316 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2317 "interface %s from bridge %s: %s",
2318 bss->ifname, bss->brname, strerror(errno));
2319 if (drv->rtnl_sk)
2320 nl80211_handle_destroy(drv->rtnl_sk);
2321 }
2322 if (bss->added_bridge) {
2323 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2324 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2325 "bridge %s: %s",
2326 bss->brname, strerror(errno));
2327 }
2328
2329 nl80211_remove_monitor_interface(drv);
2330
2331 if (is_ap_interface(drv->nlmode))
2332 wpa_driver_nl80211_del_beacon(drv);
2333
2334 if (drv->eapol_sock >= 0) {
2335 eloop_unregister_read_sock(drv->eapol_sock);
2336 close(drv->eapol_sock);
2337 }
2338
2339 if (drv->if_indices != drv->default_if_indices)
2340 os_free(drv->if_indices);
2341
2342 if (drv->disabled_11b_rates)
2343 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2344
2345 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2346 IF_OPER_UP);
2347 eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2348 rfkill_deinit(drv->rfkill);
2349
2350 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2351
2352 if (!drv->start_iface_up)
2353 (void) i802_set_iface_flags(bss, 0);
2354
2355 if (drv->addr_changed) {
2356 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2357 0) < 0) {
2358 wpa_printf(MSG_DEBUG,
2359 "nl80211: Could not set interface down to restore permanent MAC address");
2360 }
2361 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2362 drv->perm_addr) < 0) {
2363 wpa_printf(MSG_DEBUG,
2364 "nl80211: Could not restore permanent MAC address");
2365 }
2366 }
2367
2368 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2369 if (!drv->hostapd || !drv->start_mode_ap)
2370 wpa_driver_nl80211_set_mode(bss,
2371 NL80211_IFTYPE_STATION);
2372 nl80211_mgmt_unsubscribe(bss, "deinit");
2373 } else {
2374 nl80211_mgmt_unsubscribe(bss, "deinit");
2375 nl80211_del_p2pdev(bss);
2376 }
2377 nl_cb_put(drv->nl_cb);
2378
2379 nl80211_destroy_bss(drv->first_bss);
2380
2381 os_free(drv->filter_ssids);
2382
2383 os_free(drv->auth_ie);
2384
2385 if (drv->in_interface_list)
2386 dl_list_del(&drv->list);
2387
2388 os_free(drv->extended_capa);
2389 os_free(drv->extended_capa_mask);
2390 os_free(drv->first_bss);
2391 os_free(drv);
2392 }
2393
2394
2395 /**
2396 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2397 * @eloop_ctx: Driver private data
2398 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2399 *
2400 * This function can be used as registered timeout when starting a scan to
2401 * generate a scan completed event if the driver does not report this.
2402 */
2403 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2404 {
2405 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2406 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2407 wpa_driver_nl80211_set_mode(drv->first_bss,
2408 drv->ap_scan_as_station);
2409 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2410 }
2411 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2412 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2413 }
2414
2415
2416 static struct nl_msg *
2417 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2418 struct wpa_driver_scan_params *params, u64 *wdev_id)
2419 {
2420 struct nl_msg *msg;
2421 size_t i;
2422 u32 scan_flags = 0;
2423
2424 msg = nlmsg_alloc();
2425 if (!msg)
2426 return NULL;
2427
2428 nl80211_cmd(drv, msg, 0, cmd);
2429
2430 if (!wdev_id)
2431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2432 else
2433 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
2434
2435 if (params->num_ssids) {
2436 struct nlattr *ssids;
2437
2438 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2439 if (ssids == NULL)
2440 goto fail;
2441 for (i = 0; i < params->num_ssids; i++) {
2442 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2443 params->ssids[i].ssid,
2444 params->ssids[i].ssid_len);
2445 if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2446 params->ssids[i].ssid) < 0)
2447 goto fail;
2448 }
2449 nla_nest_end(msg, ssids);
2450 }
2451
2452 if (params->extra_ies) {
2453 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2454 params->extra_ies, params->extra_ies_len);
2455 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2456 params->extra_ies) < 0)
2457 goto fail;
2458 }
2459
2460 if (params->freqs) {
2461 struct nlattr *freqs;
2462 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2463 if (freqs == NULL)
2464 goto fail;
2465 for (i = 0; params->freqs[i]; i++) {
2466 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2467 "MHz", params->freqs[i]);
2468 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
2469 goto fail;
2470 }
2471 nla_nest_end(msg, freqs);
2472 }
2473
2474 os_free(drv->filter_ssids);
2475 drv->filter_ssids = params->filter_ssids;
2476 params->filter_ssids = NULL;
2477 drv->num_filter_ssids = params->num_filter_ssids;
2478
2479 if (params->only_new_results) {
2480 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2481 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2482 }
2483
2484 if (params->low_priority && drv->have_low_prio_scan) {
2485 wpa_printf(MSG_DEBUG,
2486 "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2487 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2488 }
2489
2490 if (scan_flags)
2491 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags);
2492
2493 return msg;
2494
2495 fail:
2496 nla_put_failure:
2497 nlmsg_free(msg);
2498 return NULL;
2499 }
2500
2501
2502 /**
2503 * wpa_driver_nl80211_scan - Request the driver to initiate scan
2504 * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2505 * @params: Scan parameters
2506 * Returns: 0 on success, -1 on failure
2507 */
2508 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2509 struct wpa_driver_scan_params *params)
2510 {
2511 struct wpa_driver_nl80211_data *drv = bss->drv;
2512 int ret = -1, timeout;
2513 struct nl_msg *msg = NULL;
2514
2515 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2516 drv->scan_for_auth = 0;
2517
2518 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2519 bss->wdev_id_set ? &bss->wdev_id : NULL);
2520 if (!msg)
2521 return -1;
2522
2523 if (params->p2p_probe) {
2524 struct nlattr *rates;
2525
2526 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2527
2528 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2529 if (rates == NULL)
2530 goto nla_put_failure;
2531
2532 /*
2533 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2534 * by masking out everything else apart from the OFDM rates 6,
2535 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2536 * rates are left enabled.
2537 */
2538 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
2539 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2540 nla_nest_end(msg, rates);
2541
2542 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2543 }
2544
2545 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2546 msg = NULL;
2547 if (ret) {
2548 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2549 "(%s)", ret, strerror(-ret));
2550 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2551 enum nl80211_iftype old_mode = drv->nlmode;
2552
2553 /*
2554 * mac80211 does not allow scan requests in AP mode, so
2555 * try to do this in station mode.
2556 */
2557 if (wpa_driver_nl80211_set_mode(
2558 bss, NL80211_IFTYPE_STATION))
2559 goto nla_put_failure;
2560
2561 if (wpa_driver_nl80211_scan(bss, params)) {
2562 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2563 goto nla_put_failure;
2564 }
2565
2566 /* Restore AP mode when processing scan results */
2567 drv->ap_scan_as_station = old_mode;
2568 ret = 0;
2569 } else
2570 goto nla_put_failure;
2571 }
2572
2573 drv->scan_state = SCAN_REQUESTED;
2574 /* Not all drivers generate "scan completed" wireless event, so try to
2575 * read results after a timeout. */
2576 timeout = 10;
2577 if (drv->scan_complete_events) {
2578 /*
2579 * The driver seems to deliver events to notify when scan is
2580 * complete, so use longer timeout to avoid race conditions
2581 * with scanning and following association request.
2582 */
2583 timeout = 30;
2584 }
2585 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2586 "seconds", ret, timeout);
2587 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2588 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2589 drv, drv->ctx);
2590
2591 nla_put_failure:
2592 nlmsg_free(msg);
2593 return ret;
2594 }
2595
2596
2597 /**
2598 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2599 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2600 * @params: Scan parameters
2601 * @interval: Interval between scan cycles in milliseconds
2602 * Returns: 0 on success, -1 on failure or if not supported
2603 */
2604 static int wpa_driver_nl80211_sched_scan(void *priv,
2605 struct wpa_driver_scan_params *params,
2606 u32 interval)
2607 {
2608 struct i802_bss *bss = priv;
2609 struct wpa_driver_nl80211_data *drv = bss->drv;
2610 int ret = -1;
2611 struct nl_msg *msg;
2612 size_t i;
2613
2614 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2615
2616 #ifdef ANDROID
2617 if (!drv->capa.sched_scan_supported)
2618 return android_pno_start(bss, params);
2619 #endif /* ANDROID */
2620
2621 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2622 bss->wdev_id_set ? &bss->wdev_id : NULL);
2623 if (!msg)
2624 goto nla_put_failure;
2625
2626 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2627
2628 if ((drv->num_filter_ssids &&
2629 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2630 params->filter_rssi) {
2631 struct nlattr *match_sets;
2632 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2633 if (match_sets == NULL)
2634 goto nla_put_failure;
2635
2636 for (i = 0; i < drv->num_filter_ssids; i++) {
2637 struct nlattr *match_set_ssid;
2638 wpa_hexdump_ascii(MSG_MSGDUMP,
2639 "nl80211: Sched scan filter SSID",
2640 drv->filter_ssids[i].ssid,
2641 drv->filter_ssids[i].ssid_len);
2642
2643 match_set_ssid = nla_nest_start(msg, i + 1);
2644 if (match_set_ssid == NULL)
2645 goto nla_put_failure;
2646 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2647 drv->filter_ssids[i].ssid_len,
2648 drv->filter_ssids[i].ssid);
2649 if (params->filter_rssi)
2650 NLA_PUT_U32(msg,
2651 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2652 params->filter_rssi);
2653
2654 nla_nest_end(msg, match_set_ssid);
2655 }
2656
2657 /*
2658 * Due to backward compatibility code, newer kernels treat this
2659 * matchset (with only an RSSI filter) as the default for all
2660 * other matchsets, unless it's the only one, in which case the
2661 * matchset will actually allow all SSIDs above the RSSI.
2662 */
2663 if (params->filter_rssi) {
2664 struct nlattr *match_set_rssi;
2665 match_set_rssi = nla_nest_start(msg, 0);
2666 if (match_set_rssi == NULL)
2667 goto nla_put_failure;
2668 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2669 params->filter_rssi);
2670 wpa_printf(MSG_MSGDUMP,
2671 "nl80211: Sched scan RSSI filter %d dBm",
2672 params->filter_rssi);
2673 nla_nest_end(msg, match_set_rssi);
2674 }
2675
2676 nla_nest_end(msg, match_sets);
2677 }
2678
2679 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2680
2681 /* TODO: if we get an error here, we should fall back to normal scan */
2682
2683 msg = NULL;
2684 if (ret) {
2685 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2686 "ret=%d (%s)", ret, strerror(-ret));
2687 goto nla_put_failure;
2688 }
2689
2690 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2691 "scan interval %d msec", ret, interval);
2692
2693 nla_put_failure:
2694 nlmsg_free(msg);
2695 return ret;
2696 }
2697
2698
2699 /**
2700 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2701 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2702 * Returns: 0 on success, -1 on failure or if not supported
2703 */
2704 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2705 {
2706 struct i802_bss *bss = priv;
2707 struct wpa_driver_nl80211_data *drv = bss->drv;
2708 int ret = 0;
2709 struct nl_msg *msg;
2710
2711 #ifdef ANDROID
2712 if (!drv->capa.sched_scan_supported)
2713 return android_pno_stop(bss);
2714 #endif /* ANDROID */
2715
2716 msg = nlmsg_alloc();
2717 if (!msg)
2718 return -1;
2719
2720 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2721
2722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2723
2724 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2725 msg = NULL;
2726 if (ret) {
2727 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2728 "ret=%d (%s)", ret, strerror(-ret));
2729 goto nla_put_failure;
2730 }
2731
2732 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2733
2734 nla_put_failure:
2735 nlmsg_free(msg);
2736 return ret;
2737 }
2738
2739
2740 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2741 {
2742 const u8 *end, *pos;
2743
2744 if (ies == NULL)
2745 return NULL;
2746
2747 pos = ies;
2748 end = ies + ies_len;
2749
2750 while (pos + 1 < end) {
2751 if (pos + 2 + pos[1] > end)
2752 break;
2753 if (pos[0] == ie)
2754 return pos;
2755 pos += 2 + pos[1];
2756 }
2757
2758 return NULL;
2759 }
2760
2761
2762 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2763 const u8 *ie, size_t ie_len)
2764 {
2765 const u8 *ssid;
2766 size_t i;
2767
2768 if (drv->filter_ssids == NULL)
2769 return 0;
2770
2771 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2772 if (ssid == NULL)
2773 return 1;
2774
2775 for (i = 0; i < drv->num_filter_ssids; i++) {
2776 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2777 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2778 0)
2779 return 0;
2780 }
2781
2782 return 1;
2783 }
2784
2785
2786 static int bss_info_handler(struct nl_msg *msg, void *arg)
2787 {
2788 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2789 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2790 struct nlattr *bss[NL80211_BSS_MAX + 1];
2791 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2792 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2793 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2794 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2795 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2796 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2797 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2798 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2799 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2800 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2801 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2802 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2803 };
2804 struct nl80211_bss_info_arg *_arg = arg;
2805 struct wpa_scan_results *res = _arg->res;
2806 struct wpa_scan_res **tmp;
2807 struct wpa_scan_res *r;
2808 const u8 *ie, *beacon_ie;
2809 size_t ie_len, beacon_ie_len;
2810 u8 *pos;
2811 size_t i;
2812
2813 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2814 genlmsg_attrlen(gnlh, 0), NULL);
2815 if (!tb[NL80211_ATTR_BSS])
2816 return NL_SKIP;
2817 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2818 bss_policy))
2819 return NL_SKIP;
2820 if (bss[NL80211_BSS_STATUS]) {
2821 enum nl80211_bss_status status;
2822 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2823 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2824 bss[NL80211_BSS_FREQUENCY]) {
2825 _arg->assoc_freq =
2826 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2827 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2828 _arg->assoc_freq);
2829 }
2830 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2831 bss[NL80211_BSS_FREQUENCY]) {
2832 _arg->ibss_freq =
2833 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2834 wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2835 _arg->ibss_freq);
2836 }
2837 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2838 bss[NL80211_BSS_BSSID]) {
2839 os_memcpy(_arg->assoc_bssid,
2840 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2841 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2842 MACSTR, MAC2STR(_arg->assoc_bssid));
2843 }
2844 }
2845 if (!res)
2846 return NL_SKIP;
2847 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2848 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2849 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2850 } else {
2851 ie = NULL;
2852 ie_len = 0;
2853 }
2854 if (bss[NL80211_BSS_BEACON_IES]) {
2855 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2856 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2857 } else {
2858 beacon_ie = NULL;
2859 beacon_ie_len = 0;
2860 }
2861
2862 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2863 ie ? ie_len : beacon_ie_len))
2864 return NL_SKIP;
2865
2866 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2867 if (r == NULL)
2868 return NL_SKIP;
2869 if (bss[NL80211_BSS_BSSID])
2870 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2871 ETH_ALEN);
2872 if (bss[NL80211_BSS_FREQUENCY])
2873 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2874 if (bss[NL80211_BSS_BEACON_INTERVAL])
2875 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2876 if (bss[NL80211_BSS_CAPABILITY])
2877 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2878 r->flags |= WPA_SCAN_NOISE_INVALID;
2879 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2880 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2881 r->level /= 100; /* mBm to dBm */
2882 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2883 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2884 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2885 r->flags |= WPA_SCAN_QUAL_INVALID;
2886 } else
2887 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2888 if (bss[NL80211_BSS_TSF])
2889 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2890 if (bss[NL80211_BSS_SEEN_MS_AGO])
2891 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2892 r->ie_len = ie_len;
2893 pos = (u8 *) (r + 1);
2894 if (ie) {
2895 os_memcpy(pos, ie, ie_len);
2896 pos += ie_len;
2897 }
2898 r->beacon_ie_len = beacon_ie_len;
2899 if (beacon_ie)
2900 os_memcpy(pos, beacon_ie, beacon_ie_len);
2901
2902 if (bss[NL80211_BSS_STATUS]) {
2903 enum nl80211_bss_status status;
2904 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2905 switch (status) {
2906 case NL80211_BSS_STATUS_AUTHENTICATED:
2907 r->flags |= WPA_SCAN_AUTHENTICATED;
2908 break;
2909 case NL80211_BSS_STATUS_ASSOCIATED:
2910 r->flags |= WPA_SCAN_ASSOCIATED;
2911 break;
2912 default:
2913 break;
2914 }
2915 }
2916
2917 /*
2918 * cfg80211 maintains separate BSS table entries for APs if the same
2919 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2920 * not use frequency as a separate key in the BSS table, so filter out
2921 * duplicated entries. Prefer associated BSS entry in such a case in
2922 * order to get the correct frequency into the BSS table. Similarly,
2923 * prefer newer entries over older.
2924 */
2925 for (i = 0; i < res->num; i++) {
2926 const u8 *s1, *s2;
2927 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2928 continue;
2929
2930 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2931 res->res[i]->ie_len, WLAN_EID_SSID);
2932 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2933 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2934 os_memcmp(s1, s2, 2 + s1[1]) != 0)
2935 continue;
2936
2937 /* Same BSSID,SSID was already included in scan results */
2938 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2939 "for " MACSTR, MAC2STR(r->bssid));
2940
2941 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2942 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2943 r->age < res->res[i]->age) {
2944 os_free(res->res[i]);
2945 res->res[i] = r;
2946 } else
2947 os_free(r);
2948 return NL_SKIP;
2949 }
2950
2951 tmp = os_realloc_array(res->res, res->num + 1,
2952 sizeof(struct wpa_scan_res *));
2953 if (tmp == NULL) {
2954 os_free(r);
2955 return NL_SKIP;
2956 }
2957 tmp[res->num++] = r;
2958 res->res = tmp;
2959
2960 return NL_SKIP;
2961 }
2962
2963
2964 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2965 const u8 *addr)
2966 {
2967 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2968 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2969 "mismatch (" MACSTR ")", MAC2STR(addr));
2970 wpa_driver_nl80211_mlme(drv, addr,
2971 NL80211_CMD_DEAUTHENTICATE,
2972 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2973 }
2974 }
2975
2976
2977 static void wpa_driver_nl80211_check_bss_status(
2978 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2979 {
2980 size_t i;
2981
2982 for (i = 0; i < res->num; i++) {
2983 struct wpa_scan_res *r = res->res[i];
2984 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2985 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2986 "indicates BSS status with " MACSTR
2987 " as authenticated",
2988 MAC2STR(r->bssid));
2989 if (is_sta_interface(drv->nlmode) &&
2990 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2991 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2992 0) {
2993 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2994 " in local state (auth=" MACSTR
2995 " assoc=" MACSTR ")",
2996 MAC2STR(drv->auth_bssid),
2997 MAC2STR(drv->bssid));
2998 clear_state_mismatch(drv, r->bssid);
2999 }
3000 }
3001
3002 if (r->flags & WPA_SCAN_ASSOCIATED) {
3003 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3004 "indicate BSS status with " MACSTR
3005 " as associated",
3006 MAC2STR(r->bssid));
3007 if (is_sta_interface(drv->nlmode) &&
3008 !drv->associated) {
3009 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3010 "(not associated) does not match "
3011 "with BSS state");
3012 clear_state_mismatch(drv, r->bssid);
3013 } else if (is_sta_interface(drv->nlmode) &&
3014 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3015 0) {
3016 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3017 "(associated with " MACSTR ") does "
3018 "not match with BSS state",
3019 MAC2STR(drv->bssid));
3020 clear_state_mismatch(drv, r->bssid);
3021 clear_state_mismatch(drv, drv->bssid);
3022 }
3023 }
3024 }
3025 }
3026
3027
3028 static struct wpa_scan_results *
3029 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3030 {
3031 struct nl_msg *msg;
3032 struct wpa_scan_results *res;
3033 int ret;
3034 struct nl80211_bss_info_arg arg;
3035
3036 res = os_zalloc(sizeof(*res));
3037 if (res == NULL)
3038 return NULL;
3039 msg = nlmsg_alloc();
3040 if (!msg)
3041 goto nla_put_failure;
3042
3043 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3044 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
3045 goto nla_put_failure;
3046
3047 arg.drv = drv;
3048 arg.res = res;
3049 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3050 msg = NULL;
3051 if (ret == 0) {
3052 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3053 "BSSes)", (unsigned long) res->num);
3054 nl80211_get_noise_for_scan_results(drv, res);
3055 return res;
3056 }
3057 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3058 "(%s)", ret, strerror(-ret));
3059 nla_put_failure:
3060 nlmsg_free(msg);
3061 wpa_scan_results_free(res);
3062 return NULL;
3063 }
3064
3065
3066 /**
3067 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3068 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3069 * Returns: Scan results on success, -1 on failure
3070 */
3071 static struct wpa_scan_results *
3072 wpa_driver_nl80211_get_scan_results(void *priv)
3073 {
3074 struct i802_bss *bss = priv;
3075 struct wpa_driver_nl80211_data *drv = bss->drv;
3076 struct wpa_scan_results *res;
3077
3078 res = nl80211_get_scan_results(drv);
3079 if (res)
3080 wpa_driver_nl80211_check_bss_status(drv, res);
3081 return res;
3082 }
3083
3084
3085 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3086 {
3087 struct wpa_scan_results *res;
3088 size_t i;
3089
3090 res = nl80211_get_scan_results(drv);
3091 if (res == NULL) {
3092 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3093 return;
3094 }
3095
3096 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3097 for (i = 0; i < res->num; i++) {
3098 struct wpa_scan_res *r = res->res[i];
3099 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3100 (int) i, (int) res->num, MAC2STR(r->bssid),
3101 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3102 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3103 }
3104
3105 wpa_scan_results_free(res);
3106 }
3107
3108
3109 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3110 {
3111 switch (alg) {
3112 case WPA_ALG_WEP:
3113 if (key_len == 5)
3114 return WLAN_CIPHER_SUITE_WEP40;
3115 return WLAN_CIPHER_SUITE_WEP104;
3116 case WPA_ALG_TKIP:
3117 return WLAN_CIPHER_SUITE_TKIP;
3118 case WPA_ALG_CCMP:
3119 return WLAN_CIPHER_SUITE_CCMP;
3120 case WPA_ALG_GCMP:
3121 return WLAN_CIPHER_SUITE_GCMP;
3122 case WPA_ALG_CCMP_256:
3123 return WLAN_CIPHER_SUITE_CCMP_256;
3124 case WPA_ALG_GCMP_256:
3125 return WLAN_CIPHER_SUITE_GCMP_256;
3126 case WPA_ALG_IGTK:
3127 return WLAN_CIPHER_SUITE_AES_CMAC;
3128 case WPA_ALG_BIP_GMAC_128:
3129 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3130 case WPA_ALG_BIP_GMAC_256:
3131 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3132 case WPA_ALG_BIP_CMAC_256:
3133 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3134 case WPA_ALG_SMS4:
3135 return WLAN_CIPHER_SUITE_SMS4;
3136 case WPA_ALG_KRK:
3137 return WLAN_CIPHER_SUITE_KRK;
3138 case WPA_ALG_NONE:
3139 case WPA_ALG_PMK:
3140 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3141 alg);
3142 return 0;
3143 }
3144
3145 wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3146 alg);
3147 return 0;
3148 }
3149
3150
3151 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3152 {
3153 switch (cipher) {
3154 case WPA_CIPHER_CCMP_256:
3155 return WLAN_CIPHER_SUITE_CCMP_256;
3156 case WPA_CIPHER_GCMP_256:
3157 return WLAN_CIPHER_SUITE_GCMP_256;
3158 case WPA_CIPHER_CCMP:
3159 return WLAN_CIPHER_SUITE_CCMP;
3160 case WPA_CIPHER_GCMP:
3161 return WLAN_CIPHER_SUITE_GCMP;
3162 case WPA_CIPHER_TKIP:
3163 return WLAN_CIPHER_SUITE_TKIP;
3164 case WPA_CIPHER_WEP104:
3165 return WLAN_CIPHER_SUITE_WEP104;
3166 case WPA_CIPHER_WEP40:
3167 return WLAN_CIPHER_SUITE_WEP40;
3168 case WPA_CIPHER_GTK_NOT_USED:
3169 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3170 }
3171
3172 return 0;
3173 }
3174
3175
3176 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3177 int max_suites)
3178 {
3179 int num_suites = 0;
3180
3181 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3182 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3183 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3184 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3185 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3186 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3187 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3188 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3189 if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3190 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3191 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3192 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3193 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3194 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3195
3196 return num_suites;
3197 }
3198
3199
3200 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3201 const u8 *key, size_t key_len)
3202 {
3203 struct nl_msg *msg;
3204 int ret = 0;
3205
3206 if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3207 return 0;
3208
3209 msg = nlmsg_alloc();
3210 if (!msg)
3211 return -1;
3212
3213 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
3214 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3215 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
3216 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3217 QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY);
3218 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, key_len, key);
3219 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3220 msg = NULL;
3221 if (ret) {
3222 wpa_printf(MSG_DEBUG,
3223 "nl80211: Key management set key failed: ret=%d (%s)",
3224 ret, strerror(-ret));
3225 }
3226
3227 nla_put_failure:
3228 nlmsg_free(msg);
3229 return ret;
3230 }
3231
3232
3233 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3234 enum wpa_alg alg, const u8 *addr,
3235 int key_idx, int set_tx,
3236 const u8 *seq, size_t seq_len,
3237 const u8 *key, size_t key_len)
3238 {
3239 struct wpa_driver_nl80211_data *drv = bss->drv;
3240 int ifindex;
3241 struct nl_msg *msg;
3242 int ret;
3243 int tdls = 0;
3244
3245 /* Ignore for P2P Device */
3246 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3247 return 0;
3248
3249 ifindex = if_nametoindex(ifname);
3250 wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3251 "set_tx=%d seq_len=%lu key_len=%lu",
3252 __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3253 (unsigned long) seq_len, (unsigned long) key_len);
3254 #ifdef CONFIG_TDLS
3255 if (key_idx == -1) {
3256 key_idx = 0;
3257 tdls = 1;
3258 }
3259 #endif /* CONFIG_TDLS */
3260
3261 if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3262 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3263 __func__);
3264 ret = issue_key_mgmt_set_key(drv, key, key_len);
3265 return ret;
3266 }
3267
3268 msg = nlmsg_alloc();
3269 if (!msg)
3270 return -ENOMEM;
3271
3272 if (alg == WPA_ALG_NONE) {
3273 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3274 } else {
3275 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3276 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3277 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3278 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3279 wpa_alg_to_cipher_suite(alg, key_len));
3280 }
3281
3282 if (seq && seq_len) {
3283 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3284 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3285 }
3286
3287 if (addr && !is_broadcast_ether_addr(addr)) {
3288 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
3289 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3290
3291 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3292 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
3293 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3294 NL80211_KEYTYPE_GROUP);
3295 }
3296 } else if (addr && is_broadcast_ether_addr(addr)) {
3297 struct nlattr *types;
3298
3299 wpa_printf(MSG_DEBUG, " broadcast key");
3300
3301 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3302 if (!types)
3303 goto nla_put_failure;
3304 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3305 nla_nest_end(msg, types);
3306 }
3307 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3308 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3309
3310 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3311 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3312 ret = 0;
3313 if (ret)
3314 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3315 ret, strerror(-ret));
3316
3317 /*
3318 * If we failed or don't need to set the default TX key (below),
3319 * we're done here.
3320 */
3321 if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3322 return ret;
3323 if (is_ap_interface(drv->nlmode) && addr &&
3324 !is_broadcast_ether_addr(addr))
3325 return ret;
3326
3327 msg = nlmsg_alloc();
3328 if (!msg)
3329 return -ENOMEM;
3330
3331 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3332 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3333 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3334 if (alg == WPA_ALG_IGTK)
3335 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3336 else
3337 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3338 if (addr && is_broadcast_ether_addr(addr)) {
3339 struct nlattr *types;
3340
3341 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3342 if (!types)
3343 goto nla_put_failure;
3344 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3345 nla_nest_end(msg, types);
3346 } else if (addr) {
3347 struct nlattr *types;
3348
3349 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3350 if (!types)
3351 goto nla_put_failure;
3352 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3353 nla_nest_end(msg, types);
3354 }
3355
3356 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3357 if (ret == -ENOENT)
3358 ret = 0;
3359 if (ret)
3360 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3361 "err=%d %s)", ret, strerror(-ret));
3362 return ret;
3363
3364 nla_put_failure:
3365 nlmsg_free(msg);
3366 return -ENOBUFS;
3367 }
3368
3369
3370 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3371 int key_idx, int defkey,
3372 const u8 *seq, size_t seq_len,
3373 const u8 *key, size_t key_len)
3374 {
3375 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3376 if (!key_attr)
3377 return -1;
3378
3379 if (defkey && alg == WPA_ALG_IGTK)
3380 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3381 else if (defkey)
3382 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3383
3384 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3385
3386 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3387 wpa_alg_to_cipher_suite(alg, key_len));
3388
3389 if (seq && seq_len)
3390 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3391
3392 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3393
3394 nla_nest_end(msg, key_attr);
3395
3396 return 0;
3397 nla_put_failure:
3398 return -1;
3399 }
3400
3401
3402 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3403 struct nl_msg *msg)
3404 {
3405 int i, privacy = 0;
3406 struct nlattr *nl_keys, *nl_key;
3407
3408 for (i = 0; i < 4; i++) {
3409 if (!params->wep_key[i])
3410 continue;
3411 privacy = 1;
3412 break;
3413 }
3414 if (params->wps == WPS_MODE_PRIVACY)
3415 privacy = 1;
3416 if (params->pairwise_suite &&
3417 params->pairwise_suite != WPA_CIPHER_NONE)
3418 privacy = 1;
3419
3420 if (!privacy)
3421 return 0;
3422
3423 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3424
3425 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3426 if (!nl_keys)
3427 goto nla_put_failure;
3428
3429 for (i = 0; i < 4; i++) {
3430 if (!params->wep_key[i])
3431 continue;
3432
3433 nl_key = nla_nest_start(msg, i);
3434 if (!nl_key)
3435 goto nla_put_failure;
3436
3437 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3438 params->wep_key[i]);
3439 if (params->wep_key_len[i] == 5)
3440 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3441 WLAN_CIPHER_SUITE_WEP40);
3442 else
3443 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3444 WLAN_CIPHER_SUITE_WEP104);
3445
3446 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3447
3448 if (i == params->wep_tx_keyidx)
3449 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3450
3451 nla_nest_end(msg, nl_key);
3452 }
3453 nla_nest_end(msg, nl_keys);
3454
3455 return 0;
3456
3457 nla_put_failure:
3458 return -ENOBUFS;
3459 }
3460
3461
3462 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3463 const u8 *addr, int cmd, u16 reason_code,
3464 int local_state_change)
3465 {
3466 int ret = -1;
3467 struct nl_msg *msg;
3468
3469 msg = nlmsg_alloc();
3470 if (!msg)
3471 return -1;
3472
3473 nl80211_cmd(drv, msg, 0, cmd);
3474
3475 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3476 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3477 if (addr)
3478 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3479 if (local_state_change)
3480 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3481
3482 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3483 msg = NULL;
3484 if (ret) {
3485 wpa_dbg(drv->ctx, MSG_DEBUG,
3486 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3487 reason_code, ret, strerror(-ret));
3488 goto nla_put_failure;
3489 }
3490 ret = 0;
3491
3492 nla_put_failure:
3493 nlmsg_free(msg);
3494 return ret;
3495 }
3496
3497
3498 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3499 int reason_code)
3500 {
3501 int ret;
3502
3503 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3504 nl80211_mark_disconnected(drv);
3505 /* Disconnect command doesn't need BSSID - it uses cached value */
3506 ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3507 reason_code, 0);
3508 /*
3509 * For locally generated disconnect, supplicant already generates a
3510 * DEAUTH event, so ignore the event from NL80211.
3511 */
3512 drv->ignore_next_local_disconnect = ret == 0;
3513
3514 return ret;
3515 }
3516
3517
3518 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3519 const u8 *addr, int reason_code)
3520 {
3521 struct wpa_driver_nl80211_data *drv = bss->drv;
3522 int ret;
3523
3524 if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3525 nl80211_mark_disconnected(drv);
3526 return nl80211_leave_ibss(drv);
3527 }
3528 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3529 return wpa_driver_nl80211_disconnect(drv, reason_code);
3530 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3531 __func__, MAC2STR(addr), reason_code);
3532 nl80211_mark_disconnected(drv);
3533 ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3534 reason_code, 0);
3535 /*
3536 * For locally generated deauthenticate, supplicant already generates a
3537 * DEAUTH event, so ignore the event from NL80211.
3538 */
3539 drv->ignore_next_local_deauth = ret == 0;
3540 return ret;
3541 }
3542
3543
3544 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3545 struct wpa_driver_auth_params *params)
3546 {
3547 int i;
3548
3549 drv->auth_freq = params->freq;
3550 drv->auth_alg = params->auth_alg;
3551 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3552 drv->auth_local_state_change = params->local_state_change;
3553 drv->auth_p2p = params->p2p;
3554
3555 if (params->bssid)
3556 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3557 else
3558 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3559
3560 if (params->ssid) {
3561 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3562 drv->auth_ssid_len = params->ssid_len;
3563 } else
3564 drv->auth_ssid_len = 0;
3565
3566
3567 os_free(drv->auth_ie);
3568 drv->auth_ie = NULL;
3569 drv->auth_ie_len = 0;
3570 if (params->ie) {
3571 drv->auth_ie = os_malloc(params->ie_len);
3572 if (drv->auth_ie) {
3573 os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3574 drv->auth_ie_len = params->ie_len;
3575 }
3576 }
3577
3578 for (i = 0; i < 4; i++) {
3579 if (params->wep_key[i] && params->wep_key_len[i] &&
3580 params->wep_key_len[i] <= 16) {
3581 os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3582 params->wep_key_len[i]);
3583 drv->auth_wep_key_len[i] = params->wep_key_len[i];
3584 } else
3585 drv->auth_wep_key_len[i] = 0;
3586 }
3587 }
3588
3589
3590 static int wpa_driver_nl80211_authenticate(
3591 struct i802_bss *bss, struct wpa_driver_auth_params *params)
3592 {
3593 struct wpa_driver_nl80211_data *drv = bss->drv;
3594 int ret = -1, i;
3595 struct nl_msg *msg;
3596 enum nl80211_auth_type type;
3597 enum nl80211_iftype nlmode;
3598 int count = 0;
3599 int is_retry;
3600
3601 is_retry = drv->retry_auth;
3602 drv->retry_auth = 0;
3603 drv->ignore_deauth_event = 0;
3604
3605 nl80211_mark_disconnected(drv);
3606 os_memset(drv->auth_bssid, 0, ETH_ALEN);
3607 if (params->bssid)
3608 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3609 else
3610 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3611 /* FIX: IBSS mode */
3612 nlmode = params->p2p ?
3613 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3614 if (drv->nlmode != nlmode &&
3615 wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3616 return -1;
3617
3618 retry:
3619 msg = nlmsg_alloc();
3620 if (!msg)
3621 return -1;
3622
3623 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3624 drv->ifindex);
3625
3626 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3627
3628 for (i = 0; i < 4; i++) {
3629 if (!params->wep_key[i])
3630 continue;
3631 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3632 NULL, i,
3633 i == params->wep_tx_keyidx, NULL, 0,
3634 params->wep_key[i],
3635 params->wep_key_len[i]);
3636 if (params->wep_tx_keyidx != i)
3637 continue;
3638 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3639 params->wep_key[i], params->wep_key_len[i])) {
3640 nlmsg_free(msg);
3641 return -1;
3642 }
3643 }
3644
3645 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3646 if (params->bssid) {
3647 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3648 MAC2STR(params->bssid));
3649 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3650 }
3651 if (params->freq) {
3652 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3653 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3654 }
3655 if (params->ssid) {
3656 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3657 params->ssid, params->ssid_len);
3658 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3659 params->ssid);
3660 }
3661 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
3662 if (params->ie)
3663 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3664 if (params->sae_data) {
3665 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data,
3666 params->sae_data_len);
3667 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3668 params->sae_data);
3669 }
3670 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3671 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3672 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3673 type = NL80211_AUTHTYPE_SHARED_KEY;
3674 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3675 type = NL80211_AUTHTYPE_NETWORK_EAP;
3676 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3677 type = NL80211_AUTHTYPE_FT;
3678 else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3679 type = NL80211_AUTHTYPE_SAE;
3680 else
3681 goto nla_put_failure;
3682 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3683 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3684 if (params->local_state_change) {
3685 wpa_printf(MSG_DEBUG, " * Local state change only");
3686 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3687 }
3688
3689 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3690 msg = NULL;
3691 if (ret) {
3692 wpa_dbg(drv->ctx, MSG_DEBUG,
3693 "nl80211: MLME command failed (auth): ret=%d (%s)",
3694 ret, strerror(-ret));
3695 count++;
3696 if (ret == -EALREADY && count == 1 && params->bssid &&
3697 !params->local_state_change) {
3698 /*
3699 * mac80211 does not currently accept new
3700 * authentication if we are already authenticated. As a
3701 * workaround, force deauthentication and try again.
3702 */
3703 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3704 "after forced deauthentication");
3705 drv->ignore_deauth_event = 1;
3706 wpa_driver_nl80211_deauthenticate(
3707 bss, params->bssid,
3708 WLAN_REASON_PREV_AUTH_NOT_VALID);
3709 nlmsg_free(msg);
3710 goto retry;
3711 }
3712
3713 if (ret == -ENOENT && params->freq && !is_retry) {
3714 /*
3715 * cfg80211 has likely expired the BSS entry even
3716 * though it was previously available in our internal
3717 * BSS table. To recover quickly, start a single
3718 * channel scan on the specified channel.
3719 */
3720 struct wpa_driver_scan_params scan;
3721 int freqs[2];
3722
3723 os_memset(&scan, 0, sizeof(scan));
3724 scan.num_ssids = 1;
3725 if (params->ssid) {
3726 scan.ssids[0].ssid = params->ssid;
3727 scan.ssids[0].ssid_len = params->ssid_len;
3728 }
3729 freqs[0] = params->freq;
3730 freqs[1] = 0;
3731 scan.freqs = freqs;
3732 wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3733 "channel scan to refresh cfg80211 BSS "
3734 "entry");
3735 ret = wpa_driver_nl80211_scan(bss, &scan);
3736 if (ret == 0) {
3737 nl80211_copy_auth_params(drv, params);
3738 drv->scan_for_auth = 1;
3739 }
3740 } else if (is_retry) {
3741 /*
3742 * Need to indicate this with an event since the return
3743 * value from the retry is not delivered to core code.
3744 */
3745 union wpa_event_data event;
3746 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3747 "failed");
3748 os_memset(&event, 0, sizeof(event));
3749 os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3750 ETH_ALEN);
3751 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3752 &event);
3753 }
3754
3755 goto nla_put_failure;
3756 }
3757 ret = 0;
3758 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3759 "successfully");
3760
3761 nla_put_failure:
3762 nlmsg_free(msg);
3763 return ret;
3764 }
3765
3766
3767 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3768 {
3769 struct wpa_driver_auth_params params;
3770 struct i802_bss *bss = drv->first_bss;
3771 int i;
3772
3773 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3774
3775 os_memset(&params, 0, sizeof(params));
3776 params.freq = drv->auth_freq;
3777 params.auth_alg = drv->auth_alg;
3778 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3779 params.local_state_change = drv->auth_local_state_change;
3780 params.p2p = drv->auth_p2p;
3781
3782 if (!is_zero_ether_addr(drv->auth_bssid_))
3783 params.bssid = drv->auth_bssid_;
3784
3785 if (drv->auth_ssid_len) {
3786 params.ssid = drv->auth_ssid;
3787 params.ssid_len = drv->auth_ssid_len;
3788 }
3789
3790 params.ie = drv->auth_ie;
3791 params.ie_len = drv->auth_ie_len;
3792
3793 for (i = 0; i < 4; i++) {
3794 if (drv->auth_wep_key_len[i]) {
3795 params.wep_key[i] = drv->auth_wep_key[i];
3796 params.wep_key_len[i] = drv->auth_wep_key_len[i];
3797 }
3798 }
3799
3800 drv->retry_auth = 1;
3801 return wpa_driver_nl80211_authenticate(bss, &params);
3802 }
3803
3804
3805 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3806 const void *data, size_t len,
3807 int encrypt, int noack,
3808 unsigned int freq, int no_cck,
3809 int offchanok, unsigned int wait_time)
3810 {
3811 struct wpa_driver_nl80211_data *drv = bss->drv;
3812 u64 cookie;
3813 int res;
3814
3815 if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3816 freq = nl80211_get_assoc_freq(drv);
3817 wpa_printf(MSG_DEBUG,
3818 "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3819 freq);
3820 }
3821 if (freq == 0) {
3822 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3823 bss->freq);
3824 freq = bss->freq;
3825 }
3826
3827 if (drv->use_monitor) {
3828 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3829 freq, bss->freq);
3830 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3831 }
3832
3833 wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3834 res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3835 &cookie, no_cck, noack, offchanok);
3836 if (res == 0 && !noack) {
3837 const struct ieee80211_mgmt *mgmt;
3838 u16 fc;
3839
3840 mgmt = (const struct ieee80211_mgmt *) data;
3841 fc = le_to_host16(mgmt->frame_control);
3842 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3843 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3844 wpa_printf(MSG_MSGDUMP,
3845 "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3846 (long long unsigned int)
3847 drv->send_action_cookie,
3848 (long long unsigned int) cookie);
3849 drv->send_action_cookie = cookie;
3850 }
3851 }
3852
3853 return res;
3854 }
3855
3856
3857 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3858 size_t data_len, int noack,
3859 unsigned int freq, int no_cck,
3860 int offchanok,
3861 unsigned int wait_time)
3862 {
3863 struct wpa_driver_nl80211_data *drv = bss->drv;
3864 struct ieee80211_mgmt *mgmt;
3865 int encrypt = 1;
3866 u16 fc;
3867
3868 mgmt = (struct ieee80211_mgmt *) data;
3869 fc = le_to_host16(mgmt->frame_control);
3870 wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3871 " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3872 MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3873 fc, fc2str(fc), drv->nlmode);
3874
3875 if ((is_sta_interface(drv->nlmode) ||
3876 drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3877 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3878 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3879 /*
3880 * The use of last_mgmt_freq is a bit of a hack,
3881 * but it works due to the single-threaded nature
3882 * of wpa_supplicant.
3883 */
3884 if (freq == 0) {
3885 wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3886 drv->last_mgmt_freq);
3887 freq = drv->last_mgmt_freq;
3888 }
3889 return nl80211_send_frame_cmd(bss, freq, 0,
3890 data, data_len, NULL, 1, noack,
3891 1);
3892 }
3893
3894 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3895 if (freq == 0) {
3896 wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3897 bss->freq);
3898 freq = bss->freq;
3899 }
3900 return nl80211_send_frame_cmd(bss, freq,
3901 (int) freq == bss->freq ? 0 :
3902 wait_time,
3903 data, data_len,
3904 &drv->send_action_cookie,
3905 no_cck, noack, offchanok);
3906 }
3907
3908 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3909 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3910 /*
3911 * Only one of the authentication frame types is encrypted.
3912 * In order for static WEP encryption to work properly (i.e.,
3913 * to not encrypt the frame), we need to tell mac80211 about
3914 * the frames that must not be encrypted.
3915 */
3916 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3917 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3918 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3919 encrypt = 0;
3920 }
3921
3922 wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3923 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3924 noack, freq, no_cck, offchanok,
3925 wait_time);
3926 }
3927
3928
3929 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3930 int slot, int ht_opmode, int ap_isolate,
3931 int *basic_rates)
3932 {
3933 struct wpa_driver_nl80211_data *drv = bss->drv;
3934 struct nl_msg *msg;
3935
3936 msg = nlmsg_alloc();
3937 if (!msg)
3938 return -ENOMEM;
3939
3940 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
3941
3942 if (cts >= 0)
3943 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3944 if (preamble >= 0)
3945 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3946 if (slot >= 0)
3947 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3948 if (ht_opmode >= 0)
3949 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
3950 if (ap_isolate >= 0)
3951 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
3952
3953 if (basic_rates) {
3954 u8 rates[NL80211_MAX_SUPP_RATES];
3955 u8 rates_len = 0;
3956 int i;
3957
3958 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3959 i++)
3960 rates[rates_len++] = basic_rates[i] / 5;
3961
3962 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3963 }
3964
3965 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3966
3967 return send_and_recv_msgs(drv, msg, NULL, NULL);
3968 nla_put_failure:
3969 nlmsg_free(msg);
3970 return -ENOBUFS;
3971 }
3972
3973
3974 static int wpa_driver_nl80211_set_acl(void *priv,
3975 struct hostapd_acl_params *params)
3976 {
3977 struct i802_bss *bss = priv;
3978 struct wpa_driver_nl80211_data *drv = bss->drv;
3979 struct nl_msg *msg;
3980 struct nlattr *acl;
3981 unsigned int i;
3982 int ret = 0;
3983
3984 if (!(drv->capa.max_acl_mac_addrs))
3985 return -ENOTSUP;
3986
3987 if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3988 return -ENOTSUP;
3989
3990 msg = nlmsg_alloc();
3991 if (!msg)
3992 return -ENOMEM;
3993
3994 wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3995 params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3996
3997 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
3998
3999 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4000
4001 NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
4002 NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
4003 NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
4004
4005 acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
4006 if (acl == NULL)
4007 goto nla_put_failure;
4008
4009 for (i = 0; i < params->num_mac_acl; i++)
4010 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
4011
4012 nla_nest_end(msg, acl);
4013
4014 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4015 msg = NULL;
4016 if (ret) {
4017 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
4018 ret, strerror(-ret));
4019 }
4020
4021 nla_put_failure:
4022 nlmsg_free(msg);
4023
4024 return ret;
4025 }
4026
4027
4028 static int wpa_driver_nl80211_set_ap(void *priv,
4029 struct wpa_driver_ap_params *params)
4030 {
4031 struct i802_bss *bss = priv;
4032 struct wpa_driver_nl80211_data *drv = bss->drv;
4033 struct nl_msg *msg;
4034 u8 cmd = NL80211_CMD_NEW_BEACON;
4035 int ret;
4036 int beacon_set;
4037 int ifindex = if_nametoindex(bss->ifname);
4038 int num_suites;
4039 int smps_mode;
4040 u32 suites[10], suite;
4041 u32 ver;
4042
4043 beacon_set = bss->beacon_set;
4044
4045 msg = nlmsg_alloc();
4046 if (!msg)
4047 return -ENOMEM;
4048
4049 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4050 beacon_set);
4051 if (beacon_set)
4052 cmd = NL80211_CMD_SET_BEACON;
4053
4054 nl80211_cmd(drv, msg, 0, cmd);
4055 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
4056 params->head, params->head_len);
4057 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4058 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
4059 params->tail, params->tail_len);
4060 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4061 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
4062 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4063 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
4064 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4065 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
4066 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4067 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
4068 params->ssid, params->ssid_len);
4069 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4070 params->ssid);
4071 if (params->proberesp && params->proberesp_len) {
4072 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4073 params->proberesp, params->proberesp_len);
4074 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4075 params->proberesp);
4076 }
4077 switch (params->hide_ssid) {
4078 case NO_SSID_HIDING:
4079 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4080 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4081 NL80211_HIDDEN_SSID_NOT_IN_USE);
4082 break;
4083 case HIDDEN_SSID_ZERO_LEN:
4084 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4085 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4086 NL80211_HIDDEN_SSID_ZERO_LEN);
4087 break;
4088 case HIDDEN_SSID_ZERO_CONTENTS:
4089 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4090 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4091 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4092 break;
4093 }
4094 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4095 if (params->privacy)
4096 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4097 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4098 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4099 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4100 /* Leave out the attribute */
4101 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4102 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4103 NL80211_AUTHTYPE_SHARED_KEY);
4104 else
4105 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4106 NL80211_AUTHTYPE_OPEN_SYSTEM);
4107
4108 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4109 ver = 0;
4110 if (params->wpa_version & WPA_PROTO_WPA)
4111 ver |= NL80211_WPA_VERSION_1;
4112 if (params->wpa_version & WPA_PROTO_RSN)
4113 ver |= NL80211_WPA_VERSION_2;
4114 if (ver)
4115 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4116
4117 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4118 params->key_mgmt_suites);
4119 num_suites = 0;
4120 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4121 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4122 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4123 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4124 if (num_suites) {
4125 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4126 num_suites * sizeof(u32), suites);
4127 }
4128
4129 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4130 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
4131 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
4132
4133 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4134 params->pairwise_ciphers);
4135 num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4136 suites, ARRAY_SIZE(suites));
4137 if (num_suites) {
4138 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4139 num_suites * sizeof(u32), suites);
4140 }
4141
4142 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4143 params->group_cipher);
4144 suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4145 if (suite)
4146 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
4147
4148 switch (params->smps_mode) {
4149 case HT_CAP_INFO_SMPS_DYNAMIC:
4150 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4151 smps_mode = NL80211_SMPS_DYNAMIC;
4152 break;
4153 case HT_CAP_INFO_SMPS_STATIC:
4154 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4155 smps_mode = NL80211_SMPS_STATIC;
4156 break;
4157 default:
4158 /* invalid - fallback to smps off */
4159 case HT_CAP_INFO_SMPS_DISABLED:
4160 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4161 smps_mode = NL80211_SMPS_OFF;
4162 break;
4163 }
4164 NLA_PUT_U32(msg, NL80211_ATTR_SMPS_MODE, smps_mode);
4165
4166 if (params->beacon_ies) {
4167 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4168 params->beacon_ies);
4169 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4170 wpabuf_head(params->beacon_ies));
4171 }
4172 if (params->proberesp_ies) {
4173 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4174 params->proberesp_ies);
4175 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4176 wpabuf_len(params->proberesp_ies),
4177 wpabuf_head(params->proberesp_ies));
4178 }
4179 if (params->assocresp_ies) {
4180 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4181 params->assocresp_ies);
4182 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4183 wpabuf_len(params->assocresp_ies),
4184 wpabuf_head(params->assocresp_ies));
4185 }
4186
4187 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) {
4188 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4189 params->ap_max_inactivity);
4190 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4191 params->ap_max_inactivity);
4192 }
4193
4194 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4195 if (ret) {
4196 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4197 ret, strerror(-ret));
4198 } else {
4199 bss->beacon_set = 1;
4200 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4201 params->short_slot_time, params->ht_opmode,
4202 params->isolate, params->basic_rates);
4203 if (beacon_set && params->freq &&
4204 params->freq->bandwidth != bss->bandwidth) {
4205 wpa_printf(MSG_DEBUG,
4206 "nl80211: Update BSS %s bandwidth: %d -> %d",
4207 bss->ifname, bss->bandwidth,
4208 params->freq->bandwidth);
4209 ret = nl80211_set_channel(bss, params->freq, 1);
4210 if (ret) {
4211 wpa_printf(MSG_DEBUG,
4212 "nl80211: Frequency set failed: %d (%s)",
4213 ret, strerror(-ret));
4214 } else {
4215 wpa_printf(MSG_DEBUG,
4216 "nl80211: Frequency set succeeded for ht2040 coex");
4217 bss->bandwidth = params->freq->bandwidth;
4218 }
4219 } else if (!beacon_set) {
4220 /*
4221 * cfg80211 updates the driver on frequence change in AP
4222 * mode only at the point when beaconing is started, so
4223 * set the initial value here.
4224 */
4225 bss->bandwidth = params->freq->bandwidth;
4226 }
4227 }
4228 return ret;
4229 nla_put_failure:
4230 nlmsg_free(msg);
4231 return -ENOBUFS;
4232 }
4233
4234
4235 static int nl80211_put_freq_params(struct nl_msg *msg,
4236 struct hostapd_freq_params *freq)
4237 {
4238 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
4239 if (freq->vht_enabled) {
4240 switch (freq->bandwidth) {
4241 case 20:
4242 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4243 NL80211_CHAN_WIDTH_20);
4244 break;
4245 case 40:
4246 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4247 NL80211_CHAN_WIDTH_40);
4248 break;
4249 case 80:
4250 if (freq->center_freq2)
4251 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4252 NL80211_CHAN_WIDTH_80P80);
4253 else
4254 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4255 NL80211_CHAN_WIDTH_80);
4256 break;
4257 case 160:
4258 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4259 NL80211_CHAN_WIDTH_160);
4260 break;
4261 default:
4262 return -EINVAL;
4263 }
4264 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
4265 if (freq->center_freq2)
4266 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
4267 freq->center_freq2);
4268 } else if (freq->ht_enabled) {
4269 switch (freq->sec_channel_offset) {
4270 case -1:
4271 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4272 NL80211_CHAN_HT40MINUS);
4273 break;
4274 case 1:
4275 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4276 NL80211_CHAN_HT40PLUS);
4277 break;
4278 default:
4279 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4280 NL80211_CHAN_HT20);
4281 break;
4282 }
4283 }
4284 return 0;
4285
4286 nla_put_failure:
4287 return -ENOBUFS;
4288 }
4289
4290
4291 static int nl80211_set_channel(struct i802_bss *bss,
4292 struct hostapd_freq_params *freq, int set_chan)
4293 {
4294 struct wpa_driver_nl80211_data *drv = bss->drv;
4295 struct nl_msg *msg;
4296 int ret;
4297
4298 wpa_printf(MSG_DEBUG,
4299 "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4300 freq->freq, freq->ht_enabled, freq->vht_enabled,
4301 freq->bandwidth, freq->center_freq1, freq->center_freq2);
4302 msg = nlmsg_alloc();
4303 if (!msg)
4304 return -1;
4305
4306 nl80211_cmd(drv, msg, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4307 NL80211_CMD_SET_WIPHY);
4308
4309 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4310 if (nl80211_put_freq_params(msg, freq) < 0)
4311 goto nla_put_failure;
4312
4313 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4314 msg = NULL;
4315 if (ret == 0) {
4316 bss->freq = freq->freq;
4317 return 0;
4318 }
4319 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4320 "%d (%s)", freq->freq, ret, strerror(-ret));
4321 nla_put_failure:
4322 nlmsg_free(msg);
4323 return -1;
4324 }
4325
4326
4327 static u32 sta_flags_nl80211(int flags)
4328 {
4329 u32 f = 0;
4330
4331 if (flags & WPA_STA_AUTHORIZED)
4332 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4333 if (flags & WPA_STA_WMM)
4334 f |= BIT(NL80211_STA_FLAG_WME);
4335 if (flags & WPA_STA_SHORT_PREAMBLE)
4336 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4337 if (flags & WPA_STA_MFP)
4338 f |= BIT(NL80211_STA_FLAG_MFP);
4339 if (flags & WPA_STA_TDLS_PEER)
4340 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4341 if (flags & WPA_STA_AUTHENTICATED)
4342 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4343
4344 return f;
4345 }
4346
4347
4348 #ifdef CONFIG_MESH
4349 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4350 {
4351 switch (state) {
4352 case PLINK_LISTEN:
4353 return NL80211_PLINK_LISTEN;
4354 case PLINK_OPEN_SENT:
4355 return NL80211_PLINK_OPN_SNT;
4356 case PLINK_OPEN_RCVD:
4357 return NL80211_PLINK_OPN_RCVD;
4358 case PLINK_CNF_RCVD:
4359 return NL80211_PLINK_CNF_RCVD;
4360 case PLINK_ESTAB:
4361 return NL80211_PLINK_ESTAB;
4362 case PLINK_HOLDING:
4363 return NL80211_PLINK_HOLDING;
4364 case PLINK_BLOCKED:
4365 return NL80211_PLINK_BLOCKED;
4366 default:
4367 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4368 state);
4369 }
4370 return -1;
4371 }
4372 #endif /* CONFIG_MESH */
4373
4374
4375 static int wpa_driver_nl80211_sta_add(void *priv,
4376 struct hostapd_sta_add_params *params)
4377 {
4378 struct i802_bss *bss = priv;
4379 struct wpa_driver_nl80211_data *drv = bss->drv;
4380 struct nl_msg *msg;
4381 struct nl80211_sta_flag_update upd;
4382 int ret = -ENOBUFS;
4383
4384 if ((params->flags & WPA_STA_TDLS_PEER) &&
4385 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4386 return -EOPNOTSUPP;
4387
4388 msg = nlmsg_alloc();
4389 if (!msg)
4390 return -ENOMEM;
4391
4392 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4393 params->set ? "Set" : "Add", MAC2STR(params->addr));
4394 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4395 NL80211_CMD_NEW_STATION);
4396
4397 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4398 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4399
4400 if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4401 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4402 params->supp_rates_len, params->supp_rates);
4403 wpa_hexdump(MSG_DEBUG, " * supported rates",
4404 params->supp_rates, params->supp_rates_len);
4405
4406 if (params->ht_capabilities) {
4407 wpa_hexdump(MSG_DEBUG, " * ht_capabilities",
4408 (u8 *) params->ht_capabilities,
4409 sizeof(*params->ht_capabilities));
4410 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4411 sizeof(*params->ht_capabilities),
4412 params->ht_capabilities);
4413 }
4414
4415 if (params->vht_capabilities) {
4416 wpa_hexdump(MSG_DEBUG, " * vht_capabilities",
4417 (u8 *) params->vht_capabilities,
4418 sizeof(*params->vht_capabilities));
4419 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
4420 sizeof(*params->vht_capabilities),
4421 params->vht_capabilities);
4422 }
4423
4424 wpa_printf(MSG_DEBUG, " * capability=0x%x",
4425 params->capability);
4426 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY,
4427 params->capability);
4428
4429 if (params->ext_capab) {
4430 wpa_hexdump(MSG_DEBUG, " * ext_capab",
4431 params->ext_capab, params->ext_capab_len);
4432 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4433 params->ext_capab_len, params->ext_capab);
4434 }
4435 }
4436 if (!params->set) {
4437 if (params->aid) {
4438 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid);
4439 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4440 } else {
4441 /*
4442 * cfg80211 validates that AID is non-zero, so we have
4443 * to make this a non-zero value for the TDLS case where
4444 * a dummy STA entry is used for now.
4445 */
4446 wpa_printf(MSG_DEBUG, " * aid=1 (TDLS workaround)");
4447 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
4448 }
4449 wpa_printf(MSG_DEBUG, " * listen_interval=%u",
4450 params->listen_interval);
4451 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4452 params->listen_interval);
4453 } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4454 wpa_printf(MSG_DEBUG, " * peer_aid=%u", params->aid);
4455 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
4456 }
4457
4458 if (params->vht_opmode_enabled) {
4459 wpa_printf(MSG_DEBUG, " * opmode=%u", params->vht_opmode);
4460 NLA_PUT_U8(msg, NL80211_ATTR_OPMODE_NOTIF,
4461 params->vht_opmode);
4462 }
4463
4464 if (params->supp_channels) {
4465 wpa_hexdump(MSG_DEBUG, " * supported channels",
4466 params->supp_channels, params->supp_channels_len);
4467 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4468 params->supp_channels_len, params->supp_channels);
4469 }
4470
4471 if (params->supp_oper_classes) {
4472 wpa_hexdump(MSG_DEBUG, " * supported operating classes",
4473 params->supp_oper_classes,
4474 params->supp_oper_classes_len);
4475 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4476 params->supp_oper_classes_len,
4477 params->supp_oper_classes);
4478 }
4479
4480 os_memset(&upd, 0, sizeof(upd));
4481 upd.set = sta_flags_nl80211(params->flags);
4482 upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4483 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x",
4484 upd.set, upd.mask);
4485 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4486
4487 #ifdef CONFIG_MESH
4488 if (params->plink_state)
4489 NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_STATE,
4490 sta_plink_state_nl80211(params->plink_state));
4491 #endif /* CONFIG_MESH */
4492
4493 if (params->flags & WPA_STA_WMM) {
4494 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4495
4496 if (!wme)
4497 goto nla_put_failure;
4498
4499 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo);
4500 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4501 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
4502 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
4503 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4504 WMM_QOSINFO_STA_SP_MASK);
4505 nla_nest_end(msg, wme);
4506 }
4507
4508 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4509 msg = NULL;
4510 if (ret)
4511 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4512 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4513 strerror(-ret));
4514 if (ret == -EEXIST)
4515 ret = 0;
4516 nla_put_failure:
4517 nlmsg_free(msg);
4518 return ret;
4519 }
4520
4521
4522 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4523 {
4524 #ifdef CONFIG_LIBNL3_ROUTE
4525 struct wpa_driver_nl80211_data *drv = bss->drv;
4526 struct rtnl_neigh *rn;
4527 struct nl_addr *nl_addr;
4528 int err;
4529
4530 rn = rtnl_neigh_alloc();
4531 if (!rn)
4532 return;
4533
4534 rtnl_neigh_set_family(rn, AF_BRIDGE);
4535 rtnl_neigh_set_ifindex(rn, bss->ifindex);
4536 nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4537 if (!nl_addr) {
4538 rtnl_neigh_put(rn);
4539 return;
4540 }
4541 rtnl_neigh_set_lladdr(rn, nl_addr);
4542
4543 err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4544 if (err < 0) {
4545 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4546 MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4547 bss->ifindex, nl_geterror(err));
4548 } else {
4549 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4550 MACSTR, MAC2STR(addr));
4551 }
4552
4553 nl_addr_put(nl_addr);
4554 rtnl_neigh_put(rn);
4555 #endif /* CONFIG_LIBNL3_ROUTE */
4556 }
4557
4558
4559 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4560 int deauth, u16 reason_code)
4561 {
4562 struct wpa_driver_nl80211_data *drv = bss->drv;
4563 struct nl_msg *msg;
4564 int ret;
4565
4566 msg = nlmsg_alloc();
4567 if (!msg)
4568 return -ENOMEM;
4569
4570 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4571
4572 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4573 if_nametoindex(bss->ifname));
4574 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4575 if (deauth == 0)
4576 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4577 WLAN_FC_STYPE_DISASSOC);
4578 else if (deauth == 1)
4579 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4580 WLAN_FC_STYPE_DEAUTH);
4581 if (reason_code)
4582 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4583
4584 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4585 wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4586 " --> %d (%s)",
4587 bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4588
4589 if (drv->rtnl_sk)
4590 rtnl_neigh_delete_fdb_entry(bss, addr);
4591
4592 if (ret == -ENOENT)
4593 return 0;
4594 return ret;
4595 nla_put_failure:
4596 nlmsg_free(msg);
4597 return -ENOBUFS;
4598 }
4599
4600
4601 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4602 {
4603 struct nl_msg *msg;
4604 struct wpa_driver_nl80211_data *drv2;
4605
4606 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4607
4608 /* stop listening for EAPOL on this interface */
4609 dl_list_for_each(drv2, &drv->global->interfaces,
4610 struct wpa_driver_nl80211_data, list)
4611 del_ifidx(drv2, ifidx);
4612
4613 msg = nlmsg_alloc();
4614 if (!msg)
4615 goto nla_put_failure;
4616
4617 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4619
4620 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4621 return;
4622 msg = NULL;
4623 nla_put_failure:
4624 nlmsg_free(msg);
4625 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4626 }
4627
4628
4629 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4630 {
4631 switch (mode) {
4632 case NL80211_IFTYPE_ADHOC:
4633 return "ADHOC";
4634 case NL80211_IFTYPE_STATION:
4635 return "STATION";
4636 case NL80211_IFTYPE_AP:
4637 return "AP";
4638 case NL80211_IFTYPE_AP_VLAN:
4639 return "AP_VLAN";
4640 case NL80211_IFTYPE_WDS:
4641 return "WDS";
4642 case NL80211_IFTYPE_MONITOR:
4643 return "MONITOR";
4644 case NL80211_IFTYPE_MESH_POINT:
4645 return "MESH_POINT";
4646 case NL80211_IFTYPE_P2P_CLIENT:
4647 return "P2P_CLIENT";
4648 case NL80211_IFTYPE_P2P_GO:
4649 return "P2P_GO";
4650 case NL80211_IFTYPE_P2P_DEVICE:
4651 return "P2P_DEVICE";
4652 default:
4653 return "unknown";
4654 }
4655 }
4656
4657
4658 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4659 const char *ifname,
4660 enum nl80211_iftype iftype,
4661 const u8 *addr, int wds,
4662 int (*handler)(struct nl_msg *, void *),
4663 void *arg)
4664 {
4665 struct nl_msg *msg;
4666 int ifidx;
4667 int ret = -ENOBUFS;
4668
4669 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4670 iftype, nl80211_iftype_str(iftype));
4671
4672 msg = nlmsg_alloc();
4673 if (!msg)
4674 return -1;
4675
4676 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4677 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
4678 goto nla_put_failure;
4679 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4680 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4681
4682 if (iftype == NL80211_IFTYPE_MONITOR) {
4683 struct nlattr *flags;
4684
4685 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4686 if (!flags)
4687 goto nla_put_failure;
4688
4689 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
4690
4691 nla_nest_end(msg, flags);
4692 } else if (wds) {
4693 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4694 }
4695
4696 /*
4697 * Tell cfg80211 that the interface belongs to the socket that created
4698 * it, and the interface should be deleted when the socket is closed.
4699 */
4700 NLA_PUT_FLAG(msg, NL80211_ATTR_IFACE_SOCKET_OWNER);
4701
4702 ret = send_and_recv_msgs(drv, msg, handler, arg);
4703 msg = NULL;
4704 if (ret) {
4705 nla_put_failure:
4706 nlmsg_free(msg);
4707 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4708 ifname, ret, strerror(-ret));
4709 return ret;
4710 }
4711
4712 if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4713 return 0;
4714
4715 ifidx = if_nametoindex(ifname);
4716 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4717 ifname, ifidx);
4718
4719 if (ifidx <= 0)
4720 return -1;
4721
4722 /*
4723 * Some virtual interfaces need to process EAPOL packets and events on
4724 * the parent interface. This is used mainly with hostapd.
4725 */
4726 if (drv->hostapd ||
4727 iftype == NL80211_IFTYPE_AP_VLAN ||
4728 iftype == NL80211_IFTYPE_WDS ||
4729 iftype == NL80211_IFTYPE_MONITOR) {
4730 /* start listening for EAPOL on this interface */
4731 add_ifidx(drv, ifidx);
4732 }
4733
4734 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4735 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4736 nl80211_remove_iface(drv, ifidx);
4737 return -1;
4738 }
4739
4740 return ifidx;
4741 }
4742
4743
4744 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4745 const char *ifname, enum nl80211_iftype iftype,
4746 const u8 *addr, int wds,
4747 int (*handler)(struct nl_msg *, void *),
4748 void *arg, int use_existing)
4749 {
4750 int ret;
4751
4752 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4753 arg);
4754
4755 /* if error occurred and interface exists already */
4756 if (ret == -ENFILE && if_nametoindex(ifname)) {
4757 if (use_existing) {
4758 wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4759 ifname);
4760 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4761 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4762 addr) < 0 &&
4763 (linux_set_iface_flags(drv->global->ioctl_sock,
4764 ifname, 0) < 0 ||
4765 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4766 addr) < 0 ||
4767 linux_set_iface_flags(drv->global->ioctl_sock,
4768 ifname, 1) < 0))
4769 return -1;
4770 return -ENFILE;
4771 }
4772 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4773
4774 /* Try to remove the interface that was already there. */
4775 nl80211_remove_iface(drv, if_nametoindex(ifname));
4776
4777 /* Try to create the interface again */
4778 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4779 wds, handler, arg);
4780 }
4781
4782 if (ret >= 0 && is_p2p_net_interface(iftype))
4783 nl80211_disable_11b_rates(drv, ret, 1);
4784
4785 return ret;
4786 }
4787
4788
4789 static int nl80211_setup_ap(struct i802_bss *bss)
4790 {
4791 struct wpa_driver_nl80211_data *drv = bss->drv;
4792
4793 wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4794 bss->ifname, drv->device_ap_sme, drv->use_monitor);
4795
4796 /*
4797 * Disable Probe Request reporting unless we need it in this way for
4798 * devices that include the AP SME, in the other case (unless using
4799 * monitor iface) we'll get it through the nl_mgmt socket instead.
4800 */
4801 if (!drv->device_ap_sme)
4802 wpa_driver_nl80211_probe_req_report(bss, 0);
4803
4804 if (!drv->device_ap_sme && !drv->use_monitor)
4805 if (nl80211_mgmt_subscribe_ap(bss))
4806 return -1;
4807
4808 if (drv->device_ap_sme && !drv->use_monitor)
4809 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4810 return -1;
4811
4812 if (!drv->device_ap_sme && drv->use_monitor &&
4813 nl80211_create_monitor_interface(drv) &&
4814 !drv->device_ap_sme)
4815 return -1;
4816
4817 if (drv->device_ap_sme &&
4818 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4819 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4820 "Probe Request frame reporting in AP mode");
4821 /* Try to survive without this */
4822 }
4823
4824 return 0;
4825 }
4826
4827
4828 static void nl80211_teardown_ap(struct i802_bss *bss)
4829 {
4830 struct wpa_driver_nl80211_data *drv = bss->drv;
4831
4832 wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4833 bss->ifname, drv->device_ap_sme, drv->use_monitor);
4834 if (drv->device_ap_sme) {
4835 wpa_driver_nl80211_probe_req_report(bss, 0);
4836 if (!drv->use_monitor)
4837 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4838 } else if (drv->use_monitor)
4839 nl80211_remove_monitor_interface(drv);
4840 else
4841 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4842
4843 bss->beacon_set = 0;
4844 }
4845
4846
4847 static int nl80211_send_eapol_data(struct i802_bss *bss,
4848 const u8 *addr, const u8 *data,
4849 size_t data_len)
4850 {
4851 struct sockaddr_ll ll;
4852 int ret;
4853
4854 if (bss->drv->eapol_tx_sock < 0) {
4855 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4856 return -1;
4857 }
4858
4859 os_memset(&ll, 0, sizeof(ll));
4860 ll.sll_family = AF_PACKET;
4861 ll.sll_ifindex = bss->ifindex;
4862 ll.sll_protocol = htons(ETH_P_PAE);
4863 ll.sll_halen = ETH_ALEN;
4864 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4865 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4866 (struct sockaddr *) &ll, sizeof(ll));
4867 if (ret < 0)
4868 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4869 strerror(errno));
4870
4871 return ret;
4872 }
4873
4874
4875 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4876
4877 static int wpa_driver_nl80211_hapd_send_eapol(
4878 void *priv, const u8 *addr, const u8 *data,
4879 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4880 {
4881 struct i802_bss *bss = priv;
4882 struct wpa_driver_nl80211_data *drv = bss->drv;
4883 struct ieee80211_hdr *hdr;
4884 size_t len;
4885 u8 *pos;
4886 int res;
4887 int qos = flags & WPA_STA_WMM;
4888
4889 if (drv->device_ap_sme || !drv->use_monitor)
4890 return nl80211_send_eapol_data(bss, addr, data, data_len);
4891
4892 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4893 data_len;
4894 hdr = os_zalloc(len);
4895 if (hdr == NULL) {
4896 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4897 (unsigned long) len);
4898 return -1;
4899 }
4900
4901 hdr->frame_control =
4902 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4903 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4904 if (encrypt)
4905 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4906 if (qos) {
4907 hdr->frame_control |=
4908 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4909 }
4910
4911 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4912 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4913 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4914 pos = (u8 *) (hdr + 1);
4915
4916 if (qos) {
4917 /* Set highest priority in QoS header */
4918 pos[0] = 7;
4919 pos[1] = 0;
4920 pos += 2;
4921 }
4922
4923 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4924 pos += sizeof(rfc1042_header);
4925 WPA_PUT_BE16(pos, ETH_P_PAE);
4926 pos += 2;
4927 memcpy(pos, data, data_len);
4928
4929 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4930 0, 0, 0, 0);
4931 if (res < 0) {
4932 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4933 "failed: %d (%s)",
4934 (unsigned long) len, errno, strerror(errno));
4935 }
4936 os_free(hdr);
4937
4938 return res;
4939 }
4940
4941
4942 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4943 int total_flags,
4944 int flags_or, int flags_and)
4945 {
4946 struct i802_bss *bss = priv;
4947 struct wpa_driver_nl80211_data *drv = bss->drv;
4948 struct nl_msg *msg;
4949 struct nlattr *flags;
4950 struct nl80211_sta_flag_update upd;
4951
4952 wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4953 " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4954 bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4955 !!(total_flags & WPA_STA_AUTHORIZED));
4956
4957 msg = nlmsg_alloc();
4958 if (!msg)
4959 return -ENOMEM;
4960
4961 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
4962
4963 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4964 if_nametoindex(bss->ifname));
4965 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4966
4967 /*
4968 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4969 * can be removed eventually.
4970 */
4971 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4972 if (!flags)
4973 goto nla_put_failure;
4974 if (total_flags & WPA_STA_AUTHORIZED)
4975 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
4976
4977 if (total_flags & WPA_STA_WMM)
4978 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
4979
4980 if (total_flags & WPA_STA_SHORT_PREAMBLE)
4981 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
4982
4983 if (total_flags & WPA_STA_MFP)
4984 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
4985
4986 if (total_flags & WPA_STA_TDLS_PEER)
4987 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
4988
4989 nla_nest_end(msg, flags);
4990
4991 os_memset(&upd, 0, sizeof(upd));
4992 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4993 upd.set = sta_flags_nl80211(flags_or);
4994 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4995
4996 return send_and_recv_msgs(drv, msg, NULL, NULL);
4997 nla_put_failure:
4998 nlmsg_free(msg);
4999 return -ENOBUFS;
5000 }
5001
5002
5003 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5004 struct wpa_driver_associate_params *params)
5005 {
5006 enum nl80211_iftype nlmode, old_mode;
5007
5008 if (params->p2p) {
5009 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5010 "group (GO)");
5011 nlmode = NL80211_IFTYPE_P2P_GO;
5012 } else
5013 nlmode = NL80211_IFTYPE_AP;
5014
5015 old_mode = drv->nlmode;
5016 if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
5017 nl80211_remove_monitor_interface(drv);
5018 return -1;
5019 }
5020
5021 if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
5022 if (old_mode != nlmode)
5023 wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
5024 nl80211_remove_monitor_interface(drv);
5025 return -1;
5026 }
5027
5028 return 0;
5029 }
5030
5031
5032 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5033 {
5034 struct nl_msg *msg;
5035 int ret = -1;
5036
5037 msg = nlmsg_alloc();
5038 if (!msg)
5039 return -1;
5040
5041 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5042 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5043 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5044 msg = NULL;
5045 if (ret) {
5046 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5047 "(%s)", ret, strerror(-ret));
5048 goto nla_put_failure;
5049 }
5050
5051 ret = 0;
5052 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5053
5054 nla_put_failure:
5055 if (wpa_driver_nl80211_set_mode(drv->first_bss,
5056 NL80211_IFTYPE_STATION)) {
5057 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5058 "station mode");
5059 }
5060
5061 nlmsg_free(msg);
5062 return ret;
5063 }
5064
5065
5066 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5067 struct wpa_driver_associate_params *params)
5068 {
5069 struct nl_msg *msg;
5070 int ret = -1;
5071 int count = 0;
5072
5073 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5074
5075 if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5076 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5077 "IBSS mode");
5078 return -1;
5079 }
5080
5081 retry:
5082 msg = nlmsg_alloc();
5083 if (!msg)
5084 return -1;
5085
5086 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5087 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5088
5089 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5090 goto nla_put_failure;
5091
5092 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5093 params->ssid, params->ssid_len);
5094 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5095 params->ssid);
5096 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5097 drv->ssid_len = params->ssid_len;
5098
5099 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
5100 wpa_printf(MSG_DEBUG, " * ht_enabled=%d", params->freq.ht_enabled);
5101 wpa_printf(MSG_DEBUG, " * sec_channel_offset=%d",
5102 params->freq.sec_channel_offset);
5103 wpa_printf(MSG_DEBUG, " * vht_enabled=%d", params->freq.vht_enabled);
5104 wpa_printf(MSG_DEBUG, " * center_freq1=%d", params->freq.center_freq1);
5105 wpa_printf(MSG_DEBUG, " * center_freq2=%d", params->freq.center_freq2);
5106 wpa_printf(MSG_DEBUG, " * bandwidth=%d", params->freq.bandwidth);
5107 if (nl80211_put_freq_params(msg, &params->freq) < 0)
5108 goto nla_put_failure;
5109
5110 if (params->beacon_int > 0) {
5111 wpa_printf(MSG_DEBUG, " * beacon_int=%d", params->beacon_int);
5112 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL,
5113 params->beacon_int);
5114 }
5115
5116 ret = nl80211_set_conn_keys(params, msg);
5117 if (ret)
5118 goto nla_put_failure;
5119
5120 if (params->bssid && params->fixed_bssid) {
5121 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR,
5122 MAC2STR(params->bssid));
5123 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5124 }
5125
5126 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5127 params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5128 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5129 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5130 wpa_printf(MSG_DEBUG, " * control port");
5131 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5132 }
5133
5134 if (params->wpa_ie) {
5135 wpa_hexdump(MSG_DEBUG,
5136 " * Extra IEs for Beacon/Probe Response frames",
5137 params->wpa_ie, params->wpa_ie_len);
5138 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5139 params->wpa_ie);
5140 }
5141
5142 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5143 msg = NULL;
5144 if (ret) {
5145 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5146 ret, strerror(-ret));
5147 count++;
5148 if (ret == -EALREADY && count == 1) {
5149 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5150 "forced leave");
5151 nl80211_leave_ibss(drv);
5152 nlmsg_free(msg);
5153 goto retry;
5154 }
5155
5156 goto nla_put_failure;
5157 }
5158 ret = 0;
5159 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5160
5161 nla_put_failure:
5162 nlmsg_free(msg);
5163 return ret;
5164 }
5165
5166
5167 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5168 struct wpa_driver_associate_params *params,
5169 struct nl_msg *msg)
5170 {
5171 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5172
5173 if (params->bssid) {
5174 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5175 MAC2STR(params->bssid));
5176 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5177 }
5178
5179 if (params->bssid_hint) {
5180 wpa_printf(MSG_DEBUG, " * bssid_hint=" MACSTR,
5181 MAC2STR(params->bssid_hint));
5182 NLA_PUT(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5183 params->bssid_hint);
5184 }
5185
5186 if (params->freq.freq) {
5187 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
5188 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq.freq);
5189 drv->assoc_freq = params->freq.freq;
5190 } else
5191 drv->assoc_freq = 0;
5192
5193 if (params->freq_hint) {
5194 wpa_printf(MSG_DEBUG, " * freq_hint=%d", params->freq_hint);
5195 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5196 params->freq_hint);
5197 }
5198
5199 if (params->bg_scan_period >= 0) {
5200 wpa_printf(MSG_DEBUG, " * bg scan period=%d",
5201 params->bg_scan_period);
5202 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5203 params->bg_scan_period);
5204 }
5205
5206 if (params->ssid) {
5207 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5208 params->ssid, params->ssid_len);
5209 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5210 params->ssid);
5211 if (params->ssid_len > sizeof(drv->ssid))
5212 goto nla_put_failure;
5213 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5214 drv->ssid_len = params->ssid_len;
5215 }
5216
5217 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5218 if (params->wpa_ie)
5219 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5220 params->wpa_ie);
5221
5222 if (params->wpa_proto) {
5223 enum nl80211_wpa_versions ver = 0;
5224
5225 if (params->wpa_proto & WPA_PROTO_WPA)
5226 ver |= NL80211_WPA_VERSION_1;
5227 if (params->wpa_proto & WPA_PROTO_RSN)
5228 ver |= NL80211_WPA_VERSION_2;
5229
5230 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
5231 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5232 }
5233
5234 if (params->pairwise_suite != WPA_CIPHER_NONE) {
5235 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5236 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
5237 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5238 }
5239
5240 if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5241 !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5242 /*
5243 * This is likely to work even though many drivers do not
5244 * advertise support for operations without GTK.
5245 */
5246 wpa_printf(MSG_DEBUG, " * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5247 } else if (params->group_suite != WPA_CIPHER_NONE) {
5248 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5249 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
5250 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5251 }
5252
5253 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5254 params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5255 params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5256 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5257 params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5258 params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5259 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5260 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5261 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
5262 int mgmt = WLAN_AKM_SUITE_PSK;
5263
5264 switch (params->key_mgmt_suite) {
5265 case WPA_KEY_MGMT_CCKM:
5266 mgmt = WLAN_AKM_SUITE_CCKM;
5267 break;
5268 case WPA_KEY_MGMT_IEEE8021X:
5269 mgmt = WLAN_AKM_SUITE_8021X;
5270 break;
5271 case WPA_KEY_MGMT_FT_IEEE8021X:
5272 mgmt = WLAN_AKM_SUITE_FT_8021X;
5273 break;
5274 case WPA_KEY_MGMT_FT_PSK:
5275 mgmt = WLAN_AKM_SUITE_FT_PSK;
5276 break;
5277 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5278 mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5279 break;
5280 case WPA_KEY_MGMT_PSK_SHA256:
5281 mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5282 break;
5283 case WPA_KEY_MGMT_OSEN:
5284 mgmt = WLAN_AKM_SUITE_OSEN;
5285 break;
5286 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
5287 mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
5288 break;
5289 case WPA_KEY_MGMT_PSK:
5290 default:
5291 mgmt = WLAN_AKM_SUITE_PSK;
5292 break;
5293 }
5294 wpa_printf(MSG_DEBUG, " * akm=0x%x", mgmt);
5295 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5296 }
5297
5298 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5299
5300 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5301 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5302
5303 if (params->rrm_used) {
5304 u32 drv_rrm_flags = drv->capa.rrm_flags;
5305 if (!(drv_rrm_flags &
5306 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
5307 !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET))
5308 goto nla_put_failure;
5309 NLA_PUT_FLAG(msg, NL80211_ATTR_USE_RRM);
5310 }
5311
5312 if (params->disable_ht)
5313 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
5314
5315 if (params->htcaps && params->htcaps_mask) {
5316 int sz = sizeof(struct ieee80211_ht_capabilities);
5317 wpa_hexdump(MSG_DEBUG, " * htcaps", params->htcaps, sz);
5318 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
5319 wpa_hexdump(MSG_DEBUG, " * htcaps_mask",
5320 params->htcaps_mask, sz);
5321 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5322 params->htcaps_mask);
5323 }
5324
5325 #ifdef CONFIG_VHT_OVERRIDES
5326 if (params->disable_vht) {
5327 wpa_printf(MSG_DEBUG, " * VHT disabled");
5328 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
5329 }
5330
5331 if (params->vhtcaps && params->vhtcaps_mask) {
5332 int sz = sizeof(struct ieee80211_vht_capabilities);
5333 wpa_hexdump(MSG_DEBUG, " * vhtcaps", params->vhtcaps, sz);
5334 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
5335 wpa_hexdump(MSG_DEBUG, " * vhtcaps_mask",
5336 params->vhtcaps_mask, sz);
5337 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5338 params->vhtcaps_mask);
5339 }
5340 #endif /* CONFIG_VHT_OVERRIDES */
5341
5342 if (params->p2p)
5343 wpa_printf(MSG_DEBUG, " * P2P group");
5344
5345 return 0;
5346 nla_put_failure:
5347 return -1;
5348 }
5349
5350
5351 static int wpa_driver_nl80211_try_connect(
5352 struct wpa_driver_nl80211_data *drv,
5353 struct wpa_driver_associate_params *params)
5354 {
5355 struct nl_msg *msg;
5356 enum nl80211_auth_type type;
5357 int ret;
5358 int algs;
5359
5360 if (params->req_key_mgmt_offload && params->psk &&
5361 (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5362 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5363 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5364 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5365 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5366 if (ret)
5367 return ret;
5368 }
5369
5370 msg = nlmsg_alloc();
5371 if (!msg)
5372 return -1;
5373
5374 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5375 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5376
5377 ret = nl80211_connect_common(drv, params, msg);
5378 if (ret)
5379 goto nla_put_failure;
5380
5381 algs = 0;
5382 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5383 algs++;
5384 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5385 algs++;
5386 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5387 algs++;
5388 if (algs > 1) {
5389 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
5390 "selection");
5391 goto skip_auth_type;
5392 }
5393
5394 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5395 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5396 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5397 type = NL80211_AUTHTYPE_SHARED_KEY;
5398 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5399 type = NL80211_AUTHTYPE_NETWORK_EAP;
5400 else if (params->auth_alg & WPA_AUTH_ALG_FT)
5401 type = NL80211_AUTHTYPE_FT;
5402 else
5403 goto nla_put_failure;
5404
5405 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
5406 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5407
5408 skip_auth_type:
5409 ret = nl80211_set_conn_keys(params, msg);
5410 if (ret)
5411 goto nla_put_failure;
5412
5413 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5414 msg = NULL;
5415 if (ret) {
5416 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5417 "(%s)", ret, strerror(-ret));
5418 goto nla_put_failure;
5419 }
5420 ret = 0;
5421 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5422
5423 nla_put_failure:
5424 nlmsg_free(msg);
5425 return ret;
5426
5427 }
5428
5429
5430 static int wpa_driver_nl80211_connect(
5431 struct wpa_driver_nl80211_data *drv,
5432 struct wpa_driver_associate_params *params)
5433 {
5434 int ret = wpa_driver_nl80211_try_connect(drv, params);
5435 if (ret == -EALREADY) {
5436 /*
5437 * cfg80211 does not currently accept new connections if
5438 * we are already connected. As a workaround, force
5439 * disconnection and try again.
5440 */
5441 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5442 "disconnecting before reassociation "
5443 "attempt");
5444 if (wpa_driver_nl80211_disconnect(
5445 drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5446 return -1;
5447 ret = wpa_driver_nl80211_try_connect(drv, params);
5448 }
5449 return ret;
5450 }
5451
5452
5453 static int wpa_driver_nl80211_associate(
5454 void *priv, struct wpa_driver_associate_params *params)
5455 {
5456 struct i802_bss *bss = priv;
5457 struct wpa_driver_nl80211_data *drv = bss->drv;
5458 int ret;
5459 struct nl_msg *msg;
5460
5461 if (params->mode == IEEE80211_MODE_AP)
5462 return wpa_driver_nl80211_ap(drv, params);
5463
5464 if (params->mode == IEEE80211_MODE_IBSS)
5465 return wpa_driver_nl80211_ibss(drv, params);
5466
5467 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5468 enum nl80211_iftype nlmode = params->p2p ?
5469 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5470
5471 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5472 return -1;
5473 return wpa_driver_nl80211_connect(drv, params);
5474 }
5475
5476 nl80211_mark_disconnected(drv);
5477
5478 msg = nlmsg_alloc();
5479 if (!msg)
5480 return -1;
5481
5482 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5483 drv->ifindex);
5484 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5485
5486 ret = nl80211_connect_common(drv, params, msg);
5487 if (ret)
5488 goto nla_put_failure;
5489
5490 if (params->prev_bssid) {
5491 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
5492 MAC2STR(params->prev_bssid));
5493 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5494 params->prev_bssid);
5495 }
5496
5497 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5498 msg = NULL;
5499 if (ret) {
5500 wpa_dbg(drv->ctx, MSG_DEBUG,
5501 "nl80211: MLME command failed (assoc): ret=%d (%s)",
5502 ret, strerror(-ret));
5503 nl80211_dump_scan(drv);
5504 goto nla_put_failure;
5505 }
5506 ret = 0;
5507 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5508 "successfully");
5509
5510 nla_put_failure:
5511 nlmsg_free(msg);
5512 return ret;
5513 }
5514
5515
5516 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5517 int ifindex, enum nl80211_iftype mode)
5518 {
5519 struct nl_msg *msg;
5520 int ret = -ENOBUFS;
5521
5522 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5523 ifindex, mode, nl80211_iftype_str(mode));
5524
5525 msg = nlmsg_alloc();
5526 if (!msg)
5527 return -ENOMEM;
5528
5529 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5530 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5531 goto nla_put_failure;
5532 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5533
5534 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5535 msg = NULL;
5536 if (!ret)
5537 return 0;
5538 nla_put_failure:
5539 nlmsg_free(msg);
5540 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5541 " %d (%s)", ifindex, mode, ret, strerror(-ret));
5542 return ret;
5543 }
5544
5545
5546 static int wpa_driver_nl80211_set_mode_impl(
5547 struct i802_bss *bss,
5548 enum nl80211_iftype nlmode,
5549 struct hostapd_freq_params *desired_freq_params)
5550 {
5551 struct wpa_driver_nl80211_data *drv = bss->drv;
5552 int ret = -1;
5553 int i;
5554 int was_ap = is_ap_interface(drv->nlmode);
5555 int res;
5556 int mode_switch_res;
5557
5558 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5559 if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5560 mode_switch_res = 0;
5561
5562 if (mode_switch_res == 0) {
5563 drv->nlmode = nlmode;
5564 ret = 0;
5565 goto done;
5566 }
5567
5568 if (mode_switch_res == -ENODEV)
5569 return -1;
5570
5571 if (nlmode == drv->nlmode) {
5572 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5573 "requested mode - ignore error");
5574 ret = 0;
5575 goto done; /* Already in the requested mode */
5576 }
5577
5578 /* mac80211 doesn't allow mode changes while the device is up, so
5579 * take the device down, try to set the mode again, and bring the
5580 * device back up.
5581 */
5582 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5583 "interface down");
5584 for (i = 0; i < 10; i++) {
5585 res = i802_set_iface_flags(bss, 0);
5586 if (res == -EACCES || res == -ENODEV)
5587 break;
5588 if (res != 0) {
5589 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5590 "interface down");
5591 os_sleep(0, 100000);
5592 continue;
5593 }
5594
5595 /*
5596 * Setting the mode will fail for some drivers if the phy is
5597 * on a frequency that the mode is disallowed in.
5598 */
5599 if (desired_freq_params) {
5600 res = i802_set_freq(bss, desired_freq_params);
5601 if (res) {
5602 wpa_printf(MSG_DEBUG,
5603 "nl80211: Failed to set frequency on interface");
5604 }
5605 }
5606
5607 /* Try to set the mode again while the interface is down */
5608 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5609 if (mode_switch_res == -EBUSY) {
5610 wpa_printf(MSG_DEBUG,
5611 "nl80211: Delaying mode set while interface going down");
5612 os_sleep(0, 100000);
5613 continue;
5614 }
5615 ret = mode_switch_res;
5616 break;
5617 }
5618
5619 if (!ret) {
5620 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5621 "interface is down");
5622 drv->nlmode = nlmode;
5623 drv->ignore_if_down_event = 1;
5624 }
5625
5626 /* Bring the interface back up */
5627 res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5628 if (res != 0) {
5629 wpa_printf(MSG_DEBUG,
5630 "nl80211: Failed to set interface up after switching mode");
5631 ret = -1;
5632 }
5633
5634 done:
5635 if (ret) {
5636 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5637 "from %d failed", nlmode, drv->nlmode);
5638 return ret;
5639 }
5640
5641 if (is_p2p_net_interface(nlmode))
5642 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5643 else if (drv->disabled_11b_rates)
5644 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5645
5646 if (is_ap_interface(nlmode)) {
5647 nl80211_mgmt_unsubscribe(bss, "start AP");
5648 /* Setup additional AP mode functionality if needed */
5649 if (nl80211_setup_ap(bss))
5650 return -1;
5651 } else if (was_ap) {
5652 /* Remove additional AP mode functionality */
5653 nl80211_teardown_ap(bss);
5654 } else {
5655 nl80211_mgmt_unsubscribe(bss, "mode change");
5656 }
5657
5658 if (is_mesh_interface(nlmode) &&
5659 nl80211_mgmt_subscribe_mesh(bss))
5660 return -1;
5661
5662 if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5663 !is_mesh_interface(nlmode) &&
5664 nl80211_mgmt_subscribe_non_ap(bss) < 0)
5665 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5666 "frame processing - ignore for now");
5667
5668 return 0;
5669 }
5670
5671
5672 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5673 enum nl80211_iftype nlmode)
5674 {
5675 return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5676 }
5677
5678
5679 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5680 struct hostapd_freq_params *freq)
5681 {
5682 return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5683 freq);
5684 }
5685
5686
5687 static int wpa_driver_nl80211_get_capa(void *priv,
5688 struct wpa_driver_capa *capa)
5689 {
5690 struct i802_bss *bss = priv;
5691 struct wpa_driver_nl80211_data *drv = bss->drv;
5692
5693 if (!drv->has_capability)
5694 return -1;
5695 os_memcpy(capa, &drv->capa, sizeof(*capa));
5696 if (drv->extended_capa && drv->extended_capa_mask) {
5697 capa->extended_capa = drv->extended_capa;
5698 capa->extended_capa_mask = drv->extended_capa_mask;
5699 capa->extended_capa_len = drv->extended_capa_len;
5700 }
5701
5702 return 0;
5703 }
5704
5705
5706 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5707 {
5708 struct i802_bss *bss = priv;
5709 struct wpa_driver_nl80211_data *drv = bss->drv;
5710
5711 wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5712 bss->ifname, drv->operstate, state,
5713 state ? "UP" : "DORMANT");
5714 drv->operstate = state;
5715 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5716 state ? IF_OPER_UP : IF_OPER_DORMANT);
5717 }
5718
5719
5720 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5721 {
5722 struct i802_bss *bss = priv;
5723 struct wpa_driver_nl80211_data *drv = bss->drv;
5724 struct nl_msg *msg;
5725 struct nl80211_sta_flag_update upd;
5726 int ret = -ENOBUFS;
5727
5728 if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5729 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5730 return 0;
5731 }
5732
5733 wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5734 MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5735
5736 msg = nlmsg_alloc();
5737 if (!msg)
5738 return -ENOMEM;
5739
5740 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5741
5742 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5743 if_nametoindex(bss->ifname));
5744 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5745
5746 os_memset(&upd, 0, sizeof(upd));
5747 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5748 if (authorized)
5749 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5750 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5751
5752 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5753 msg = NULL;
5754 if (!ret)
5755 return 0;
5756 nla_put_failure:
5757 nlmsg_free(msg);
5758 wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5759 ret, strerror(-ret));
5760 return ret;
5761 }
5762
5763
5764 /* Set kernel driver on given frequency (MHz) */
5765 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5766 {
5767 struct i802_bss *bss = priv;
5768 return nl80211_set_channel(bss, freq, 0);
5769 }
5770
5771
5772 static inline int min_int(int a, int b)
5773 {
5774 if (a < b)
5775 return a;
5776 return b;
5777 }
5778
5779
5780 static int get_key_handler(struct nl_msg *msg, void *arg)
5781 {
5782 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5783 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5784
5785 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5786 genlmsg_attrlen(gnlh, 0), NULL);
5787
5788 /*
5789 * TODO: validate the key index and mac address!
5790 * Otherwise, there's a race condition as soon as
5791 * the kernel starts sending key notifications.
5792 */
5793
5794 if (tb[NL80211_ATTR_KEY_SEQ])
5795 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5796 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5797 return NL_SKIP;
5798 }
5799
5800
5801 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5802 int idx, u8 *seq)
5803 {
5804 struct i802_bss *bss = priv;
5805 struct wpa_driver_nl80211_data *drv = bss->drv;
5806 struct nl_msg *msg;
5807
5808 msg = nlmsg_alloc();
5809 if (!msg)
5810 return -ENOMEM;
5811
5812 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5813
5814 if (addr)
5815 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5816 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5817 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5818
5819 memset(seq, 0, 6);
5820
5821 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5822 nla_put_failure:
5823 nlmsg_free(msg);
5824 return -ENOBUFS;
5825 }
5826
5827
5828 static int i802_set_rts(void *priv, int rts)
5829 {
5830 struct i802_bss *bss = priv;
5831 struct wpa_driver_nl80211_data *drv = bss->drv;
5832 struct nl_msg *msg;
5833 int ret = -ENOBUFS;
5834 u32 val;
5835
5836 msg = nlmsg_alloc();
5837 if (!msg)
5838 return -ENOMEM;
5839
5840 if (rts >= 2347)
5841 val = (u32) -1;
5842 else
5843 val = rts;
5844
5845 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5846 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5847 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5848
5849 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5850 msg = NULL;
5851 if (!ret)
5852 return 0;
5853 nla_put_failure:
5854 nlmsg_free(msg);
5855 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5856 "%d (%s)", rts, ret, strerror(-ret));
5857 return ret;
5858 }
5859
5860
5861 static int i802_set_frag(void *priv, int frag)
5862 {
5863 struct i802_bss *bss = priv;
5864 struct wpa_driver_nl80211_data *drv = bss->drv;
5865 struct nl_msg *msg;
5866 int ret = -ENOBUFS;
5867 u32 val;
5868
5869 msg = nlmsg_alloc();
5870 if (!msg)
5871 return -ENOMEM;
5872
5873 if (frag >= 2346)
5874 val = (u32) -1;
5875 else
5876 val = frag;
5877
5878 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5879 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5880 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5881
5882 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5883 msg = NULL;
5884 if (!ret)
5885 return 0;
5886 nla_put_failure:
5887 nlmsg_free(msg);
5888 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5889 "%d: %d (%s)", frag, ret, strerror(-ret));
5890 return ret;
5891 }
5892
5893
5894 static int i802_flush(void *priv)
5895 {
5896 struct i802_bss *bss = priv;
5897 struct wpa_driver_nl80211_data *drv = bss->drv;
5898 struct nl_msg *msg;
5899 int res;
5900
5901 msg = nlmsg_alloc();
5902 if (!msg)
5903 return -1;
5904
5905 wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5906 bss->ifname);
5907 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5908
5909 /*
5910 * XXX: FIX! this needs to flush all VLANs too
5911 */
5912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5913 if_nametoindex(bss->ifname));
5914
5915 res = send_and_recv_msgs(drv, msg, NULL, NULL);
5916 if (res) {
5917 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5918 "(%s)", res, strerror(-res));
5919 }
5920 return res;
5921 nla_put_failure:
5922 nlmsg_free(msg);
5923 return -ENOBUFS;
5924 }
5925
5926
5927 static int get_sta_handler(struct nl_msg *msg, void *arg)
5928 {
5929 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5930 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5931 struct hostap_sta_driver_data *data = arg;
5932 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5933 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5934 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5935 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5936 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5937 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5938 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5939 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5940 };
5941
5942 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5943 genlmsg_attrlen(gnlh, 0), NULL);
5944
5945 /*
5946 * TODO: validate the interface and mac address!
5947 * Otherwise, there's a race condition as soon as
5948 * the kernel starts sending station notifications.
5949 */
5950
5951 if (!tb[NL80211_ATTR_STA_INFO]) {
5952 wpa_printf(MSG_DEBUG, "sta stats missing!");
5953 return NL_SKIP;
5954 }
5955 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5956 tb[NL80211_ATTR_STA_INFO],
5957 stats_policy)) {
5958 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5959 return NL_SKIP;
5960 }
5961
5962 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5963 data->inactive_msec =
5964 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5965 if (stats[NL80211_STA_INFO_RX_BYTES])
5966 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5967 if (stats[NL80211_STA_INFO_TX_BYTES])
5968 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5969 if (stats[NL80211_STA_INFO_RX_PACKETS])
5970 data->rx_packets =
5971 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5972 if (stats[NL80211_STA_INFO_TX_PACKETS])
5973 data->tx_packets =
5974 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5975 if (stats[NL80211_STA_INFO_TX_FAILED])
5976 data->tx_retry_failed =
5977 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5978
5979 return NL_SKIP;
5980 }
5981
5982 static int i802_read_sta_data(struct i802_bss *bss,
5983 struct hostap_sta_driver_data *data,
5984 const u8 *addr)
5985 {
5986 struct wpa_driver_nl80211_data *drv = bss->drv;
5987 struct nl_msg *msg;
5988
5989 os_memset(data, 0, sizeof(*data));
5990 msg = nlmsg_alloc();
5991 if (!msg)
5992 return -ENOMEM;
5993
5994 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
5995
5996 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5997 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5998
5999 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6000 nla_put_failure:
6001 nlmsg_free(msg);
6002 return -ENOBUFS;
6003 }
6004
6005
6006 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6007 int cw_min, int cw_max, int burst_time)
6008 {
6009 struct i802_bss *bss = priv;
6010 struct wpa_driver_nl80211_data *drv = bss->drv;
6011 struct nl_msg *msg;
6012 struct nlattr *txq, *params;
6013
6014 msg = nlmsg_alloc();
6015 if (!msg)
6016 return -1;
6017
6018 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6019
6020 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6021
6022 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6023 if (!txq)
6024 goto nla_put_failure;
6025
6026 /* We are only sending parameters for a single TXQ at a time */
6027 params = nla_nest_start(msg, 1);
6028 if (!params)
6029 goto nla_put_failure;
6030
6031 switch (queue) {
6032 case 0:
6033 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6034 break;
6035 case 1:
6036 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6037 break;
6038 case 2:
6039 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6040 break;
6041 case 3:
6042 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6043 break;
6044 }
6045 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6046 * 32 usec, so need to convert the value here. */
6047 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6048 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6049 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6050 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6051
6052 nla_nest_end(msg, params);
6053
6054 nla_nest_end(msg, txq);
6055
6056 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6057 return 0;
6058 msg = NULL;
6059 nla_put_failure:
6060 nlmsg_free(msg);
6061 return -1;
6062 }
6063
6064
6065 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6066 const char *ifname, int vlan_id)
6067 {
6068 struct wpa_driver_nl80211_data *drv = bss->drv;
6069 struct nl_msg *msg;
6070 int ret = -ENOBUFS;
6071
6072 msg = nlmsg_alloc();
6073 if (!msg)
6074 return -ENOMEM;
6075
6076 wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6077 ", ifname=%s[%d], vlan_id=%d)",
6078 bss->ifname, if_nametoindex(bss->ifname),
6079 MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6080 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6081
6082 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6083 if_nametoindex(bss->ifname));
6084 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6085 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6086 if_nametoindex(ifname));
6087
6088 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6089 msg = NULL;
6090 if (ret < 0) {
6091 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6092 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6093 MAC2STR(addr), ifname, vlan_id, ret,
6094 strerror(-ret));
6095 }
6096 nla_put_failure:
6097 nlmsg_free(msg);
6098 return ret;
6099 }
6100
6101
6102 static int i802_get_inact_sec(void *priv, const u8 *addr)
6103 {
6104 struct hostap_sta_driver_data data;
6105 int ret;
6106
6107 data.inactive_msec = (unsigned long) -1;
6108 ret = i802_read_sta_data(priv, &data, addr);
6109 if (ret || data.inactive_msec == (unsigned long) -1)
6110 return -1;
6111 return data.inactive_msec / 1000;
6112 }
6113
6114
6115 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6116 {
6117 #if 0
6118 /* TODO */
6119 #endif
6120 return 0;
6121 }
6122
6123
6124 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6125 int reason)
6126 {
6127 struct i802_bss *bss = priv;
6128 struct wpa_driver_nl80211_data *drv = bss->drv;
6129 struct ieee80211_mgmt mgmt;
6130
6131 if (is_mesh_interface(drv->nlmode))
6132 return -1;
6133
6134 if (drv->device_ap_sme)
6135 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6136
6137 memset(&mgmt, 0, sizeof(mgmt));
6138 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6139 WLAN_FC_STYPE_DEAUTH);
6140 memcpy(mgmt.da, addr, ETH_ALEN);
6141 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6142 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6143 mgmt.u.deauth.reason_code = host_to_le16(reason);
6144 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6145 IEEE80211_HDRLEN +
6146 sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6147 0);
6148 }
6149
6150
6151 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6152 int reason)
6153 {
6154 struct i802_bss *bss = priv;
6155 struct wpa_driver_nl80211_data *drv = bss->drv;
6156 struct ieee80211_mgmt mgmt;
6157
6158 if (is_mesh_interface(drv->nlmode))
6159 return -1;
6160
6161 if (drv->device_ap_sme)
6162 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6163
6164 memset(&mgmt, 0, sizeof(mgmt));
6165 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6166 WLAN_FC_STYPE_DISASSOC);
6167 memcpy(mgmt.da, addr, ETH_ALEN);
6168 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6169 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6170 mgmt.u.disassoc.reason_code = host_to_le16(reason);
6171 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6172 IEEE80211_HDRLEN +
6173 sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6174 0);
6175 }
6176
6177
6178 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6179 {
6180 char buf[200], *pos, *end;
6181 int i, res;
6182
6183 pos = buf;
6184 end = pos + sizeof(buf);
6185
6186 for (i = 0; i < drv->num_if_indices; i++) {
6187 if (!drv->if_indices[i])
6188 continue;
6189 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6190 if (res < 0 || res >= end - pos)
6191 break;
6192 pos += res;
6193 }
6194 *pos = '\0';
6195
6196 wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6197 drv->num_if_indices, buf);
6198 }
6199
6200
6201 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6202 {
6203 int i;
6204 int *old;
6205
6206 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6207 ifidx);
6208 if (have_ifidx(drv, ifidx)) {
6209 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6210 ifidx);
6211 return;
6212 }
6213 for (i = 0; i < drv->num_if_indices; i++) {
6214 if (drv->if_indices[i] == 0) {
6215 drv->if_indices[i] = ifidx;
6216 dump_ifidx(drv);
6217 return;
6218 }
6219 }
6220
6221 if (drv->if_indices != drv->default_if_indices)
6222 old = drv->if_indices;
6223 else
6224 old = NULL;
6225
6226 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6227 sizeof(int));
6228 if (!drv->if_indices) {
6229 if (!old)
6230 drv->if_indices = drv->default_if_indices;
6231 else
6232 drv->if_indices = old;
6233 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6234 "interfaces");
6235 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6236 return;
6237 } else if (!old)
6238 os_memcpy(drv->if_indices, drv->default_if_indices,
6239 sizeof(drv->default_if_indices));
6240 drv->if_indices[drv->num_if_indices] = ifidx;
6241 drv->num_if_indices++;
6242 dump_ifidx(drv);
6243 }
6244
6245
6246 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6247 {
6248 int i;
6249
6250 for (i = 0; i < drv->num_if_indices; i++) {
6251 if (drv->if_indices[i] == ifidx) {
6252 drv->if_indices[i] = 0;
6253 break;
6254 }
6255 }
6256 dump_ifidx(drv);
6257 }
6258
6259
6260 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6261 {
6262 int i;
6263
6264 for (i = 0; i < drv->num_if_indices; i++)
6265 if (drv->if_indices[i] == ifidx)
6266 return 1;
6267
6268 return 0;
6269 }
6270
6271
6272 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6273 const char *bridge_ifname, char *ifname_wds)
6274 {
6275 struct i802_bss *bss = priv;
6276 struct wpa_driver_nl80211_data *drv = bss->drv;
6277 char name[IFNAMSIZ + 1];
6278
6279 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6280 if (ifname_wds)
6281 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6282
6283 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6284 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6285 if (val) {
6286 if (!if_nametoindex(name)) {
6287 if (nl80211_create_iface(drv, name,
6288 NL80211_IFTYPE_AP_VLAN,
6289 bss->addr, 1, NULL, NULL, 0) <
6290 0)
6291 return -1;
6292 if (bridge_ifname &&
6293 linux_br_add_if(drv->global->ioctl_sock,
6294 bridge_ifname, name) < 0)
6295 return -1;
6296 }
6297 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6298 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6299 "interface %s up", name);
6300 }
6301 return i802_set_sta_vlan(priv, addr, name, 0);
6302 } else {
6303 if (bridge_ifname)
6304 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6305 name);
6306
6307 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6308 nl80211_remove_iface(drv, if_nametoindex(name));
6309 return 0;
6310 }
6311 }
6312
6313
6314 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6315 {
6316 struct wpa_driver_nl80211_data *drv = eloop_ctx;
6317 struct sockaddr_ll lladdr;
6318 unsigned char buf[3000];
6319 int len;
6320 socklen_t fromlen = sizeof(lladdr);
6321
6322 len = recvfrom(sock, buf, sizeof(buf), 0,
6323 (struct sockaddr *)&lladdr, &fromlen);
6324 if (len < 0) {
6325 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6326 strerror(errno));
6327 return;
6328 }
6329
6330 if (have_ifidx(drv, lladdr.sll_ifindex))
6331 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6332 }
6333
6334
6335 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6336 struct i802_bss *bss,
6337 const char *brname, const char *ifname)
6338 {
6339 int br_ifindex;
6340 char in_br[IFNAMSIZ];
6341
6342 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6343 br_ifindex = if_nametoindex(brname);
6344 bss->br_ifindex = br_ifindex;
6345 if (br_ifindex == 0) {
6346 /*
6347 * Bridge was configured, but the bridge device does
6348 * not exist. Try to add it now.
6349 */
6350 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6351 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6352 "bridge interface %s: %s",
6353 brname, strerror(errno));
6354 return -1;
6355 }
6356 bss->added_bridge = 1;
6357 add_ifidx(drv, if_nametoindex(brname));
6358 }
6359
6360 if (linux_br_get(in_br, ifname) == 0) {
6361 if (os_strcmp(in_br, brname) == 0)
6362 return 0; /* already in the bridge */
6363
6364 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6365 "bridge %s", ifname, in_br);
6366 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6367 0) {
6368 wpa_printf(MSG_ERROR, "nl80211: Failed to "
6369 "remove interface %s from bridge "
6370 "%s: %s",
6371 ifname, brname, strerror(errno));
6372 return -1;
6373 }
6374 }
6375
6376 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6377 ifname, brname);
6378 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6379 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6380 "into bridge %s: %s",
6381 ifname, brname, strerror(errno));
6382 return -1;
6383 }
6384 bss->added_if_into_bridge = 1;
6385
6386 return 0;
6387 }
6388
6389
6390 static void *i802_init(struct hostapd_data *hapd,
6391 struct wpa_init_params *params)
6392 {
6393 struct wpa_driver_nl80211_data *drv;
6394 struct i802_bss *bss;
6395 size_t i;
6396 char brname[IFNAMSIZ];
6397 int ifindex, br_ifindex;
6398 int br_added = 0;
6399
6400 bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6401 params->global_priv, 1,
6402 params->bssid);
6403 if (bss == NULL)
6404 return NULL;
6405
6406 drv = bss->drv;
6407
6408 if (linux_br_get(brname, params->ifname) == 0) {
6409 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6410 params->ifname, brname);
6411 br_ifindex = if_nametoindex(brname);
6412 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6413 } else {
6414 brname[0] = '\0';
6415 br_ifindex = 0;
6416 }
6417 bss->br_ifindex = br_ifindex;
6418
6419 for (i = 0; i < params->num_bridge; i++) {
6420 if (params->bridge[i]) {
6421 ifindex = if_nametoindex(params->bridge[i]);
6422 if (ifindex)
6423 add_ifidx(drv, ifindex);
6424 if (ifindex == br_ifindex)
6425 br_added = 1;
6426 }
6427 }
6428 if (!br_added && br_ifindex &&
6429 (params->num_bridge == 0 || !params->bridge[0]))
6430 add_ifidx(drv, br_ifindex);
6431
6432 /* start listening for EAPOL on the default AP interface */
6433 add_ifidx(drv, drv->ifindex);
6434
6435 if (params->num_bridge && params->bridge[0] &&
6436 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6437 goto failed;
6438
6439 #ifdef CONFIG_LIBNL3_ROUTE
6440 if (bss->added_if_into_bridge) {
6441 drv->rtnl_sk = nl_socket_alloc();
6442 if (drv->rtnl_sk == NULL) {
6443 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6444 goto failed;
6445 }
6446
6447 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6448 wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6449 strerror(errno));
6450 goto failed;
6451 }
6452 }
6453 #endif /* CONFIG_LIBNL3_ROUTE */
6454
6455 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6456 if (drv->eapol_sock < 0) {
6457 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6458 strerror(errno));
6459 goto failed;
6460 }
6461
6462 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6463 {
6464 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6465 goto failed;
6466 }
6467
6468 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6469 params->own_addr))
6470 goto failed;
6471 os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6472
6473 memcpy(bss->addr, params->own_addr, ETH_ALEN);
6474
6475 return bss;
6476
6477 failed:
6478 wpa_driver_nl80211_deinit(bss);
6479 return NULL;
6480 }
6481
6482
6483 static void i802_deinit(void *priv)
6484 {
6485 struct i802_bss *bss = priv;
6486 wpa_driver_nl80211_deinit(bss);
6487 }
6488
6489
6490 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6491 enum wpa_driver_if_type type)
6492 {
6493 switch (type) {
6494 case WPA_IF_STATION:
6495 return NL80211_IFTYPE_STATION;
6496 case WPA_IF_P2P_CLIENT:
6497 case WPA_IF_P2P_GROUP:
6498 return NL80211_IFTYPE_P2P_CLIENT;
6499 case WPA_IF_AP_VLAN:
6500 return NL80211_IFTYPE_AP_VLAN;
6501 case WPA_IF_AP_BSS:
6502 return NL80211_IFTYPE_AP;
6503 case WPA_IF_P2P_GO:
6504 return NL80211_IFTYPE_P2P_GO;
6505 case WPA_IF_P2P_DEVICE:
6506 return NL80211_IFTYPE_P2P_DEVICE;
6507 }
6508 return -1;
6509 }
6510
6511
6512 #ifdef CONFIG_P2P
6513
6514 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6515 {
6516 struct wpa_driver_nl80211_data *drv;
6517 dl_list_for_each(drv, &global->interfaces,
6518 struct wpa_driver_nl80211_data, list) {
6519 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6520 return 1;
6521 }
6522 return 0;
6523 }
6524
6525
6526 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6527 u8 *new_addr)
6528 {
6529 unsigned int idx;
6530
6531 if (!drv->global)
6532 return -1;
6533
6534 os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6535 for (idx = 0; idx < 64; idx++) {
6536 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6537 new_addr[0] ^= idx << 2;
6538 if (!nl80211_addr_in_use(drv->global, new_addr))
6539 break;
6540 }
6541 if (idx == 64)
6542 return -1;
6543
6544 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6545 MACSTR, MAC2STR(new_addr));
6546
6547 return 0;
6548 }
6549
6550 #endif /* CONFIG_P2P */
6551
6552
6553 struct wdev_info {
6554 u64 wdev_id;
6555 int wdev_id_set;
6556 u8 macaddr[ETH_ALEN];
6557 };
6558
6559 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6560 {
6561 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6562 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6563 struct wdev_info *wi = arg;
6564
6565 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6566 genlmsg_attrlen(gnlh, 0), NULL);
6567 if (tb[NL80211_ATTR_WDEV]) {
6568 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6569 wi->wdev_id_set = 1;
6570 }
6571
6572 if (tb[NL80211_ATTR_MAC])
6573 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6574 ETH_ALEN);
6575
6576 return NL_SKIP;
6577 }
6578
6579
6580 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6581 const char *ifname, const u8 *addr,
6582 void *bss_ctx, void **drv_priv,
6583 char *force_ifname, u8 *if_addr,
6584 const char *bridge, int use_existing)
6585 {
6586 enum nl80211_iftype nlmode;
6587 struct i802_bss *bss = priv;
6588 struct wpa_driver_nl80211_data *drv = bss->drv;
6589 int ifidx;
6590 int added = 1;
6591
6592 if (addr)
6593 os_memcpy(if_addr, addr, ETH_ALEN);
6594 nlmode = wpa_driver_nl80211_if_type(type);
6595 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6596 struct wdev_info p2pdev_info;
6597
6598 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6599 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6600 0, nl80211_wdev_handler,
6601 &p2pdev_info, use_existing);
6602 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6603 wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6604 ifname);
6605 return -1;
6606 }
6607
6608 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6609 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6610 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6611 os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6612 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6613 ifname,
6614 (long long unsigned int) p2pdev_info.wdev_id);
6615 } else {
6616 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6617 0, NULL, NULL, use_existing);
6618 if (use_existing && ifidx == -ENFILE) {
6619 added = 0;
6620 ifidx = if_nametoindex(ifname);
6621 } else if (ifidx < 0) {
6622 return -1;
6623 }
6624 }
6625
6626 if (!addr) {
6627 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6628 os_memcpy(if_addr, bss->addr, ETH_ALEN);
6629 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6630 bss->ifname, if_addr) < 0) {
6631 if (added)
6632 nl80211_remove_iface(drv, ifidx);
6633 return -1;
6634 }
6635 }
6636
6637 #ifdef CONFIG_P2P
6638 if (!addr &&
6639 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6640 type == WPA_IF_P2P_GO)) {
6641 /* Enforce unique P2P Interface Address */
6642 u8 new_addr[ETH_ALEN];
6643
6644 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6645 new_addr) < 0) {
6646 if (added)
6647 nl80211_remove_iface(drv, ifidx);
6648 return -1;
6649 }
6650 if (nl80211_addr_in_use(drv->global, new_addr)) {
6651 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6652 "for P2P group interface");
6653 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6654 if (added)
6655 nl80211_remove_iface(drv, ifidx);
6656 return -1;
6657 }
6658 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6659 new_addr) < 0) {
6660 if (added)
6661 nl80211_remove_iface(drv, ifidx);
6662 return -1;
6663 }
6664 }
6665 os_memcpy(if_addr, new_addr, ETH_ALEN);
6666 }
6667 #endif /* CONFIG_P2P */
6668
6669 if (type == WPA_IF_AP_BSS) {
6670 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6671 if (new_bss == NULL) {
6672 if (added)
6673 nl80211_remove_iface(drv, ifidx);
6674 return -1;
6675 }
6676
6677 if (bridge &&
6678 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6679 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6680 "interface %s to a bridge %s",
6681 ifname, bridge);
6682 if (added)
6683 nl80211_remove_iface(drv, ifidx);
6684 os_free(new_bss);
6685 return -1;
6686 }
6687
6688 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6689 {
6690 if (added)
6691 nl80211_remove_iface(drv, ifidx);
6692 os_free(new_bss);
6693 return -1;
6694 }
6695 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6696 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6697 new_bss->ifindex = ifidx;
6698 new_bss->drv = drv;
6699 new_bss->next = drv->first_bss->next;
6700 new_bss->freq = drv->first_bss->freq;
6701 new_bss->ctx = bss_ctx;
6702 new_bss->added_if = added;
6703 drv->first_bss->next = new_bss;
6704 if (drv_priv)
6705 *drv_priv = new_bss;
6706 nl80211_init_bss(new_bss);
6707
6708 /* Subscribe management frames for this WPA_IF_AP_BSS */
6709 if (nl80211_setup_ap(new_bss))
6710 return -1;
6711 }
6712
6713 if (drv->global)
6714 drv->global->if_add_ifindex = ifidx;
6715
6716 /*
6717 * Some virtual interfaces need to process EAPOL packets and events on
6718 * the parent interface. This is used mainly with hostapd.
6719 */
6720 if (ifidx > 0 &&
6721 (drv->hostapd ||
6722 nlmode == NL80211_IFTYPE_AP_VLAN ||
6723 nlmode == NL80211_IFTYPE_WDS ||
6724 nlmode == NL80211_IFTYPE_MONITOR))
6725 add_ifidx(drv, ifidx);
6726
6727 return 0;
6728 }
6729
6730
6731 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6732 enum wpa_driver_if_type type,
6733 const char *ifname)
6734 {
6735 struct wpa_driver_nl80211_data *drv = bss->drv;
6736 int ifindex = if_nametoindex(ifname);
6737
6738 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6739 __func__, type, ifname, ifindex, bss->added_if);
6740 if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6741 nl80211_remove_iface(drv, ifindex);
6742 else if (ifindex > 0 && !bss->added_if) {
6743 struct wpa_driver_nl80211_data *drv2;
6744 dl_list_for_each(drv2, &drv->global->interfaces,
6745 struct wpa_driver_nl80211_data, list)
6746 del_ifidx(drv2, ifindex);
6747 }
6748
6749 if (type != WPA_IF_AP_BSS)
6750 return 0;
6751
6752 if (bss->added_if_into_bridge) {
6753 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6754 bss->ifname) < 0)
6755 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6756 "interface %s from bridge %s: %s",
6757 bss->ifname, bss->brname, strerror(errno));
6758 }
6759 if (bss->added_bridge) {
6760 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6761 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6762 "bridge %s: %s",
6763 bss->brname, strerror(errno));
6764 }
6765
6766 if (bss != drv->first_bss) {
6767 struct i802_bss *tbss;
6768
6769 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6770 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6771 if (tbss->next == bss) {
6772 tbss->next = bss->next;
6773 /* Unsubscribe management frames */
6774 nl80211_teardown_ap(bss);
6775 nl80211_destroy_bss(bss);
6776 if (!bss->added_if)
6777 i802_set_iface_flags(bss, 0);
6778 os_free(bss);
6779 bss = NULL;
6780 break;
6781 }
6782 }
6783 if (bss)
6784 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6785 "BSS %p in the list", __func__, bss);
6786 } else {
6787 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6788 nl80211_teardown_ap(bss);
6789 if (!bss->added_if && !drv->first_bss->next)
6790 wpa_driver_nl80211_del_beacon(drv);
6791 nl80211_destroy_bss(bss);
6792 if (!bss->added_if)
6793 i802_set_iface_flags(bss, 0);
6794 if (drv->first_bss->next) {
6795 drv->first_bss = drv->first_bss->next;
6796 drv->ctx = drv->first_bss->ctx;
6797 os_free(bss);
6798 } else {
6799 wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6800 }
6801 }
6802
6803 return 0;
6804 }
6805
6806
6807 static int cookie_handler(struct nl_msg *msg, void *arg)
6808 {
6809 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6810 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6811 u64 *cookie = arg;
6812 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6813 genlmsg_attrlen(gnlh, 0), NULL);
6814 if (tb[NL80211_ATTR_COOKIE])
6815 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6816 return NL_SKIP;
6817 }
6818
6819
6820 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6821 unsigned int freq, unsigned int wait,
6822 const u8 *buf, size_t buf_len,
6823 u64 *cookie_out, int no_cck, int no_ack,
6824 int offchanok)
6825 {
6826 struct wpa_driver_nl80211_data *drv = bss->drv;
6827 struct nl_msg *msg;
6828 u64 cookie;
6829 int ret = -1;
6830
6831 msg = nlmsg_alloc();
6832 if (!msg)
6833 return -1;
6834
6835 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6836 "no_ack=%d offchanok=%d",
6837 freq, wait, no_cck, no_ack, offchanok);
6838 wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6839 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6840
6841 if (nl80211_set_iface_id(msg, bss) < 0)
6842 goto nla_put_failure;
6843 if (freq)
6844 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6845 if (wait)
6846 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6847 if (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6848 drv->test_use_roc_tx))
6849 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6850 if (no_cck)
6851 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6852 if (no_ack)
6853 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
6854
6855 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6856
6857 cookie = 0;
6858 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6859 msg = NULL;
6860 if (ret) {
6861 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6862 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6863 freq, wait);
6864 goto nla_put_failure;
6865 }
6866 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6867 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6868 (long long unsigned int) cookie);
6869
6870 if (cookie_out)
6871 *cookie_out = no_ack ? (u64) -1 : cookie;
6872
6873 nla_put_failure:
6874 nlmsg_free(msg);
6875 return ret;
6876 }
6877
6878
6879 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6880 unsigned int freq,
6881 unsigned int wait_time,
6882 const u8 *dst, const u8 *src,
6883 const u8 *bssid,
6884 const u8 *data, size_t data_len,
6885 int no_cck)
6886 {
6887 struct wpa_driver_nl80211_data *drv = bss->drv;
6888 int ret = -1;
6889 u8 *buf;
6890 struct ieee80211_hdr *hdr;
6891
6892 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6893 "freq=%u MHz wait=%d ms no_cck=%d)",
6894 drv->ifindex, freq, wait_time, no_cck);
6895
6896 buf = os_zalloc(24 + data_len);
6897 if (buf == NULL)
6898 return ret;
6899 os_memcpy(buf + 24, data, data_len);
6900 hdr = (struct ieee80211_hdr *) buf;
6901 hdr->frame_control =
6902 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6903 os_memcpy(hdr->addr1, dst, ETH_ALEN);
6904 os_memcpy(hdr->addr2, src, ETH_ALEN);
6905 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6906
6907 if (is_ap_interface(drv->nlmode) &&
6908 (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6909 (int) freq == bss->freq || drv->device_ap_sme ||
6910 !drv->use_monitor))
6911 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6912 0, freq, no_cck, 1,
6913 wait_time);
6914 else
6915 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6916 24 + data_len,
6917 &drv->send_action_cookie,
6918 no_cck, 0, 1);
6919
6920 os_free(buf);
6921 return ret;
6922 }
6923
6924
6925 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6926 {
6927 struct i802_bss *bss = priv;
6928 struct wpa_driver_nl80211_data *drv = bss->drv;
6929 struct nl_msg *msg;
6930 int ret;
6931
6932 msg = nlmsg_alloc();
6933 if (!msg)
6934 return;
6935
6936 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6937 (long long unsigned int) drv->send_action_cookie);
6938 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6939
6940 if (nl80211_set_iface_id(msg, bss) < 0)
6941 goto nla_put_failure;
6942 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6943
6944 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6945 msg = NULL;
6946 if (ret)
6947 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6948 "(%s)", ret, strerror(-ret));
6949
6950 nla_put_failure:
6951 nlmsg_free(msg);
6952 }
6953
6954
6955 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6956 unsigned int duration)
6957 {
6958 struct i802_bss *bss = priv;
6959 struct wpa_driver_nl80211_data *drv = bss->drv;
6960 struct nl_msg *msg;
6961 int ret;
6962 u64 cookie;
6963
6964 msg = nlmsg_alloc();
6965 if (!msg)
6966 return -1;
6967
6968 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6969
6970 if (nl80211_set_iface_id(msg, bss) < 0)
6971 goto nla_put_failure;
6972
6973 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6974 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6975
6976 cookie = 0;
6977 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6978 msg = NULL;
6979 if (ret == 0) {
6980 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6981 "0x%llx for freq=%u MHz duration=%u",
6982 (long long unsigned int) cookie, freq, duration);
6983 drv->remain_on_chan_cookie = cookie;
6984 drv->pending_remain_on_chan = 1;
6985 return 0;
6986 }
6987 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6988 "(freq=%d duration=%u): %d (%s)",
6989 freq, duration, ret, strerror(-ret));
6990 nla_put_failure:
6991 nlmsg_free(msg);
6992 return -1;
6993 }
6994
6995
6996 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6997 {
6998 struct i802_bss *bss = priv;
6999 struct wpa_driver_nl80211_data *drv = bss->drv;
7000 struct nl_msg *msg;
7001 int ret;
7002
7003 if (!drv->pending_remain_on_chan) {
7004 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7005 "to cancel");
7006 return -1;
7007 }
7008
7009 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7010 "0x%llx",
7011 (long long unsigned int) drv->remain_on_chan_cookie);
7012
7013 msg = nlmsg_alloc();
7014 if (!msg)
7015 return -1;
7016
7017 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
7018
7019 if (nl80211_set_iface_id(msg, bss) < 0)
7020 goto nla_put_failure;
7021
7022 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
7023
7024 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7025 msg = NULL;
7026 if (ret == 0)
7027 return 0;
7028 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7029 "%d (%s)", ret, strerror(-ret));
7030 nla_put_failure:
7031 nlmsg_free(msg);
7032 return -1;
7033 }
7034
7035
7036 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
7037 {
7038 struct wpa_driver_nl80211_data *drv = bss->drv;
7039
7040 if (!report) {
7041 if (bss->nl_preq && drv->device_ap_sme &&
7042 is_ap_interface(drv->nlmode) && !bss->in_deinit &&
7043 !bss->static_ap) {
7044 /*
7045 * Do not disable Probe Request reporting that was
7046 * enabled in nl80211_setup_ap().
7047 */
7048 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
7049 "Probe Request reporting nl_preq=%p while "
7050 "in AP mode", bss->nl_preq);
7051 } else if (bss->nl_preq) {
7052 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
7053 "reporting nl_preq=%p", bss->nl_preq);
7054 nl80211_destroy_eloop_handle(&bss->nl_preq);
7055 }
7056 return 0;
7057 }
7058
7059 if (bss->nl_preq) {
7060 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7061 "already on! nl_preq=%p", bss->nl_preq);
7062 return 0;
7063 }
7064
7065 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
7066 if (bss->nl_preq == NULL)
7067 return -1;
7068 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
7069 "reporting nl_preq=%p", bss->nl_preq);
7070
7071 if (nl80211_register_frame(bss, bss->nl_preq,
7072 (WLAN_FC_TYPE_MGMT << 2) |
7073 (WLAN_FC_STYPE_PROBE_REQ << 4),
7074 NULL, 0) < 0)
7075 goto out_err;
7076
7077 nl80211_register_eloop_read(&bss->nl_preq,
7078 wpa_driver_nl80211_event_receive,
7079 bss->nl_cb);
7080
7081 return 0;
7082
7083 out_err:
7084 nl_destroy_handles(&bss->nl_preq);
7085 return -1;
7086 }
7087
7088
7089 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7090 int ifindex, int disabled)
7091 {
7092 struct nl_msg *msg;
7093 struct nlattr *bands, *band;
7094 int ret;
7095
7096 msg = nlmsg_alloc();
7097 if (!msg)
7098 return -1;
7099
7100 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7101 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7102
7103 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7104 if (!bands)
7105 goto nla_put_failure;
7106
7107 /*
7108 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7109 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7110 * rates. All 5 GHz rates are left enabled.
7111 */
7112 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7113 if (!band)
7114 goto nla_put_failure;
7115 if (disabled) {
7116 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7117 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7118 }
7119 nla_nest_end(msg, band);
7120
7121 nla_nest_end(msg, bands);
7122
7123 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7124 msg = NULL;
7125 if (ret) {
7126 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7127 "(%s)", ret, strerror(-ret));
7128 } else
7129 drv->disabled_11b_rates = disabled;
7130
7131 return ret;
7132
7133 nla_put_failure:
7134 nlmsg_free(msg);
7135 return -1;
7136 }
7137
7138
7139 static int wpa_driver_nl80211_deinit_ap(void *priv)
7140 {
7141 struct i802_bss *bss = priv;
7142 struct wpa_driver_nl80211_data *drv = bss->drv;
7143 if (!is_ap_interface(drv->nlmode))
7144 return -1;
7145 wpa_driver_nl80211_del_beacon(drv);
7146 bss->beacon_set = 0;
7147
7148 /*
7149 * If the P2P GO interface was dynamically added, then it is
7150 * possible that the interface change to station is not possible.
7151 */
7152 if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7153 return 0;
7154
7155 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7156 }
7157
7158
7159 static int wpa_driver_nl80211_stop_ap(void *priv)
7160 {
7161 struct i802_bss *bss = priv;
7162 struct wpa_driver_nl80211_data *drv = bss->drv;
7163 if (!is_ap_interface(drv->nlmode))
7164 return -1;
7165 wpa_driver_nl80211_del_beacon(drv);
7166 bss->beacon_set = 0;
7167 return 0;
7168 }
7169
7170
7171 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7172 {
7173 struct i802_bss *bss = priv;
7174 struct wpa_driver_nl80211_data *drv = bss->drv;
7175 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7176 return -1;
7177
7178 /*
7179 * If the P2P Client interface was dynamically added, then it is
7180 * possible that the interface change to station is not possible.
7181 */
7182 if (bss->if_dynamic)
7183 return 0;
7184
7185 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7186 }
7187
7188
7189 static void wpa_driver_nl80211_resume(void *priv)
7190 {
7191 struct i802_bss *bss = priv;
7192
7193 if (i802_set_iface_flags(bss, 1))
7194 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7195 }
7196
7197
7198 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7199 const u8 *ies, size_t ies_len)
7200 {
7201 struct i802_bss *bss = priv;
7202 struct wpa_driver_nl80211_data *drv = bss->drv;
7203 int ret;
7204 u8 *data, *pos;
7205 size_t data_len;
7206 const u8 *own_addr = bss->addr;
7207
7208 if (action != 1) {
7209 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7210 "action %d", action);
7211 return -1;
7212 }
7213
7214 /*
7215 * Action frame payload:
7216 * Category[1] = 6 (Fast BSS Transition)
7217 * Action[1] = 1 (Fast BSS Transition Request)
7218 * STA Address
7219 * Target AP Address
7220 * FT IEs
7221 */
7222
7223 data_len = 2 + 2 * ETH_ALEN + ies_len;
7224 data = os_malloc(data_len);
7225 if (data == NULL)
7226 return -1;
7227 pos = data;
7228 *pos++ = 0x06; /* FT Action category */
7229 *pos++ = action;
7230 os_memcpy(pos, own_addr, ETH_ALEN);
7231 pos += ETH_ALEN;
7232 os_memcpy(pos, target_ap, ETH_ALEN);
7233 pos += ETH_ALEN;
7234 os_memcpy(pos, ies, ies_len);
7235
7236 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7237 drv->bssid, own_addr, drv->bssid,
7238 data, data_len, 0);
7239 os_free(data);
7240
7241 return ret;
7242 }
7243
7244
7245 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7246 {
7247 struct i802_bss *bss = priv;
7248 struct wpa_driver_nl80211_data *drv = bss->drv;
7249 struct nl_msg *msg;
7250 struct nlattr *cqm;
7251 int ret = -1;
7252
7253 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7254 "hysteresis=%d", threshold, hysteresis);
7255
7256 msg = nlmsg_alloc();
7257 if (!msg)
7258 return -1;
7259
7260 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7261
7262 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7263
7264 cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
7265 if (cqm == NULL)
7266 goto nla_put_failure;
7267
7268 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7269 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7270 nla_nest_end(msg, cqm);
7271
7272 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7273 msg = NULL;
7274
7275 nla_put_failure:
7276 nlmsg_free(msg);
7277 return ret;
7278 }
7279
7280
7281 static int get_channel_width(struct nl_msg *msg, void *arg)
7282 {
7283 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7284 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7285 struct wpa_signal_info *sig_change = arg;
7286
7287 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7288 genlmsg_attrlen(gnlh, 0), NULL);
7289
7290 sig_change->center_frq1 = -1;
7291 sig_change->center_frq2 = -1;
7292 sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7293
7294 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7295 sig_change->chanwidth = convert2width(
7296 nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7297 if (tb[NL80211_ATTR_CENTER_FREQ1])
7298 sig_change->center_frq1 =
7299 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7300 if (tb[NL80211_ATTR_CENTER_FREQ2])
7301 sig_change->center_frq2 =
7302 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7303 }
7304
7305 return NL_SKIP;
7306 }
7307
7308
7309 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7310 struct wpa_signal_info *sig)
7311 {
7312 struct nl_msg *msg;
7313
7314 msg = nlmsg_alloc();
7315 if (!msg)
7316 return -ENOMEM;
7317
7318 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
7319 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7320
7321 return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7322
7323 nla_put_failure:
7324 nlmsg_free(msg);
7325 return -ENOBUFS;
7326 }
7327
7328
7329 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7330 {
7331 struct i802_bss *bss = priv;
7332 struct wpa_driver_nl80211_data *drv = bss->drv;
7333 int res;
7334
7335 os_memset(si, 0, sizeof(*si));
7336 res = nl80211_get_link_signal(drv, si);
7337 if (res != 0)
7338 return res;
7339
7340 res = nl80211_get_channel_width(drv, si);
7341 if (res != 0)
7342 return res;
7343
7344 return nl80211_get_link_noise(drv, si);
7345 }
7346
7347
7348 static int wpa_driver_nl80211_shared_freq(void *priv)
7349 {
7350 struct i802_bss *bss = priv;
7351 struct wpa_driver_nl80211_data *drv = bss->drv;
7352 struct wpa_driver_nl80211_data *driver;
7353 int freq = 0;
7354
7355 /*
7356 * If the same PHY is in connected state with some other interface,
7357 * then retrieve the assoc freq.
7358 */
7359 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7360 drv->phyname);
7361
7362 dl_list_for_each(driver, &drv->global->interfaces,
7363 struct wpa_driver_nl80211_data, list) {
7364 if (drv == driver ||
7365 os_strcmp(drv->phyname, driver->phyname) != 0 ||
7366 !driver->associated)
7367 continue;
7368
7369 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7370 MACSTR,
7371 driver->phyname, driver->first_bss->ifname,
7372 MAC2STR(driver->first_bss->addr));
7373 if (is_ap_interface(driver->nlmode))
7374 freq = driver->first_bss->freq;
7375 else
7376 freq = nl80211_get_assoc_freq(driver);
7377 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7378 drv->phyname, freq);
7379 }
7380
7381 if (!freq)
7382 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7383 "PHY (%s) in associated state", drv->phyname);
7384
7385 return freq;
7386 }
7387
7388
7389 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7390 int encrypt)
7391 {
7392 struct i802_bss *bss = priv;
7393 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7394 0, 0, 0, 0);
7395 }
7396
7397
7398 static int nl80211_set_param(void *priv, const char *param)
7399 {
7400 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7401 if (param == NULL)
7402 return 0;
7403
7404 #ifdef CONFIG_P2P
7405 if (os_strstr(param, "use_p2p_group_interface=1")) {
7406 struct i802_bss *bss = priv;
7407 struct wpa_driver_nl80211_data *drv = bss->drv;
7408
7409 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7410 "interface");
7411 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7412 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7413 }
7414 #endif /* CONFIG_P2P */
7415
7416 if (os_strstr(param, "use_monitor=1")) {
7417 struct i802_bss *bss = priv;
7418 struct wpa_driver_nl80211_data *drv = bss->drv;
7419 drv->use_monitor = 1;
7420 }
7421
7422 if (os_strstr(param, "force_connect_cmd=1")) {
7423 struct i802_bss *bss = priv;
7424 struct wpa_driver_nl80211_data *drv = bss->drv;
7425 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7426 drv->force_connect_cmd = 1;
7427 }
7428
7429 if (os_strstr(param, "no_offchannel_tx=1")) {
7430 struct i802_bss *bss = priv;
7431 struct wpa_driver_nl80211_data *drv = bss->drv;
7432 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7433 drv->test_use_roc_tx = 1;
7434 }
7435
7436 return 0;
7437 }
7438
7439
7440 static void * nl80211_global_init(void)
7441 {
7442 struct nl80211_global *global;
7443 struct netlink_config *cfg;
7444
7445 global = os_zalloc(sizeof(*global));
7446 if (global == NULL)
7447 return NULL;
7448 global->ioctl_sock = -1;
7449 dl_list_init(&global->interfaces);
7450 global->if_add_ifindex = -1;
7451
7452 cfg = os_zalloc(sizeof(*cfg));
7453 if (cfg == NULL)
7454 goto err;
7455
7456 cfg->ctx = global;
7457 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7458 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7459 global->netlink = netlink_init(cfg);
7460 if (global->netlink == NULL) {
7461 os_free(cfg);
7462 goto err;
7463 }
7464
7465 if (wpa_driver_nl80211_init_nl_global(global) < 0)
7466 goto err;
7467
7468 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7469 if (global->ioctl_sock < 0) {
7470 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7471 strerror(errno));
7472 goto err;
7473 }
7474
7475 return global;
7476
7477 err:
7478 nl80211_global_deinit(global);
7479 return NULL;
7480 }
7481
7482
7483 static void nl80211_global_deinit(void *priv)
7484 {
7485 struct nl80211_global *global = priv;
7486 if (global == NULL)
7487 return;
7488 if (!dl_list_empty(&global->interfaces)) {
7489 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7490 "nl80211_global_deinit",
7491 dl_list_len(&global->interfaces));
7492 }
7493
7494 if (global->netlink)
7495 netlink_deinit(global->netlink);
7496
7497 nl_destroy_handles(&global->nl);
7498
7499 if (global->nl_event)
7500 nl80211_destroy_eloop_handle(&global->nl_event);
7501
7502 nl_cb_put(global->nl_cb);
7503
7504 if (global->ioctl_sock >= 0)
7505 close(global->ioctl_sock);
7506
7507 os_free(global);
7508 }
7509
7510
7511 static const char * nl80211_get_radio_name(void *priv)
7512 {
7513 struct i802_bss *bss = priv;
7514 struct wpa_driver_nl80211_data *drv = bss->drv;
7515 return drv->phyname;
7516 }
7517
7518
7519 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7520 const u8 *pmkid)
7521 {
7522 struct nl_msg *msg;
7523
7524 msg = nlmsg_alloc();
7525 if (!msg)
7526 return -ENOMEM;
7527
7528 nl80211_cmd(bss->drv, msg, 0, cmd);
7529
7530 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7531 if (pmkid)
7532 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7533 if (bssid)
7534 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7535
7536 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7537 nla_put_failure:
7538 nlmsg_free(msg);
7539 return -ENOBUFS;
7540 }
7541
7542
7543 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7544 {
7545 struct i802_bss *bss = priv;
7546 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7547 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7548 }
7549
7550
7551 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7552 {
7553 struct i802_bss *bss = priv;
7554 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7555 MAC2STR(bssid));
7556 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7557 }
7558
7559
7560 static int nl80211_flush_pmkid(void *priv)
7561 {
7562 struct i802_bss *bss = priv;
7563 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7564 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7565 }
7566
7567
7568 static void clean_survey_results(struct survey_results *survey_results)
7569 {
7570 struct freq_survey *survey, *tmp;
7571
7572 if (dl_list_empty(&survey_results->survey_list))
7573 return;
7574
7575 dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7576 struct freq_survey, list) {
7577 dl_list_del(&survey->list);
7578 os_free(survey);
7579 }
7580 }
7581
7582
7583 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7584 struct dl_list *survey_list)
7585 {
7586 struct freq_survey *survey;
7587
7588 survey = os_zalloc(sizeof(struct freq_survey));
7589 if (!survey)
7590 return;
7591
7592 survey->ifidx = ifidx;
7593 survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7594 survey->filled = 0;
7595
7596 if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7597 survey->nf = (int8_t)
7598 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7599 survey->filled |= SURVEY_HAS_NF;
7600 }
7601
7602 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7603 survey->channel_time =
7604 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7605 survey->filled |= SURVEY_HAS_CHAN_TIME;
7606 }
7607
7608 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7609 survey->channel_time_busy =
7610 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7611 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7612 }
7613
7614 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7615 survey->channel_time_rx =
7616 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7617 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7618 }
7619
7620 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7621 survey->channel_time_tx =
7622 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7623 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7624 }
7625
7626 wpa_printf(MSG_DEBUG, "nl80211: Freq survey dump event (freq=%d MHz noise=%d channel_time=%ld busy_time=%ld tx_time=%ld rx_time=%ld filled=%04x)",
7627 survey->freq,
7628 survey->nf,
7629 (unsigned long int) survey->channel_time,
7630 (unsigned long int) survey->channel_time_busy,
7631 (unsigned long int) survey->channel_time_tx,
7632 (unsigned long int) survey->channel_time_rx,
7633 survey->filled);
7634
7635 dl_list_add_tail(survey_list, &survey->list);
7636 }
7637
7638
7639 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7640 unsigned int freq_filter)
7641 {
7642 if (!freq_filter)
7643 return 1;
7644
7645 return freq_filter == surveyed_freq;
7646 }
7647
7648
7649 static int survey_handler(struct nl_msg *msg, void *arg)
7650 {
7651 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7652 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7653 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7654 struct survey_results *survey_results;
7655 u32 surveyed_freq = 0;
7656 u32 ifidx;
7657
7658 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7659 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7660 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7661 };
7662
7663 survey_results = (struct survey_results *) arg;
7664
7665 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7666 genlmsg_attrlen(gnlh, 0), NULL);
7667
7668 if (!tb[NL80211_ATTR_IFINDEX])
7669 return NL_SKIP;
7670
7671 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7672
7673 if (!tb[NL80211_ATTR_SURVEY_INFO])
7674 return NL_SKIP;
7675
7676 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7677 tb[NL80211_ATTR_SURVEY_INFO],
7678 survey_policy))
7679 return NL_SKIP;
7680
7681 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7682 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7683 return NL_SKIP;
7684 }
7685
7686 surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7687
7688 if (!check_survey_ok(sinfo, surveyed_freq,
7689 survey_results->freq_filter))
7690 return NL_SKIP;
7691
7692 if (survey_results->freq_filter &&
7693 survey_results->freq_filter != surveyed_freq) {
7694 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7695 surveyed_freq);
7696 return NL_SKIP;
7697 }
7698
7699 add_survey(sinfo, ifidx, &survey_results->survey_list);
7700
7701 return NL_SKIP;
7702 }
7703
7704
7705 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7706 {
7707 struct i802_bss *bss = priv;
7708 struct wpa_driver_nl80211_data *drv = bss->drv;
7709 struct nl_msg *msg;
7710 int err = -ENOBUFS;
7711 union wpa_event_data data;
7712 struct survey_results *survey_results;
7713
7714 os_memset(&data, 0, sizeof(data));
7715 survey_results = &data.survey_results;
7716
7717 dl_list_init(&survey_results->survey_list);
7718
7719 msg = nlmsg_alloc();
7720 if (!msg)
7721 goto nla_put_failure;
7722
7723 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7724
7725 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7726
7727 if (freq)
7728 data.survey_results.freq_filter = freq;
7729
7730 do {
7731 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7732 err = send_and_recv_msgs(drv, msg, survey_handler,
7733 survey_results);
7734 } while (err > 0);
7735
7736 if (err) {
7737 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7738 goto out_clean;
7739 }
7740
7741 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7742
7743 out_clean:
7744 clean_survey_results(survey_results);
7745 nla_put_failure:
7746 return err;
7747 }
7748
7749
7750 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7751 const u8 *replay_ctr)
7752 {
7753 struct i802_bss *bss = priv;
7754 struct wpa_driver_nl80211_data *drv = bss->drv;
7755 struct nlattr *replay_nested;
7756 struct nl_msg *msg;
7757
7758 msg = nlmsg_alloc();
7759 if (!msg)
7760 return;
7761
7762 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7763
7764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7765
7766 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7767 if (!replay_nested)
7768 goto nla_put_failure;
7769
7770 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7771 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7772 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7773 replay_ctr);
7774
7775 nla_nest_end(msg, replay_nested);
7776
7777 send_and_recv_msgs(drv, msg, NULL, NULL);
7778 return;
7779 nla_put_failure:
7780 nlmsg_free(msg);
7781 }
7782
7783
7784 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7785 const u8 *addr, int qos)
7786 {
7787 /* send data frame to poll STA and check whether
7788 * this frame is ACKed */
7789 struct {
7790 struct ieee80211_hdr hdr;
7791 u16 qos_ctl;
7792 } STRUCT_PACKED nulldata;
7793 size_t size;
7794
7795 /* Send data frame to poll STA and check whether this frame is ACKed */
7796
7797 os_memset(&nulldata, 0, sizeof(nulldata));
7798
7799 if (qos) {
7800 nulldata.hdr.frame_control =
7801 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7802 WLAN_FC_STYPE_QOS_NULL);
7803 size = sizeof(nulldata);
7804 } else {
7805 nulldata.hdr.frame_control =
7806 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7807 WLAN_FC_STYPE_NULLFUNC);
7808 size = sizeof(struct ieee80211_hdr);
7809 }
7810
7811 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7812 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7813 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7814 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7815
7816 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7817 0, 0) < 0)
7818 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7819 "send poll frame");
7820 }
7821
7822 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7823 int qos)
7824 {
7825 struct i802_bss *bss = priv;
7826 struct wpa_driver_nl80211_data *drv = bss->drv;
7827 struct nl_msg *msg;
7828
7829 if (!drv->poll_command_supported) {
7830 nl80211_send_null_frame(bss, own_addr, addr, qos);
7831 return;
7832 }
7833
7834 msg = nlmsg_alloc();
7835 if (!msg)
7836 return;
7837
7838 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
7839
7840 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7841 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7842
7843 send_and_recv_msgs(drv, msg, NULL, NULL);
7844 return;
7845 nla_put_failure:
7846 nlmsg_free(msg);
7847 }
7848
7849
7850 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7851 {
7852 struct nl_msg *msg;
7853
7854 msg = nlmsg_alloc();
7855 if (!msg)
7856 return -ENOMEM;
7857
7858 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
7859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7860 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
7861 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
7862 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7863 nla_put_failure:
7864 nlmsg_free(msg);
7865 return -ENOBUFS;
7866 }
7867
7868
7869 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7870 int ctwindow)
7871 {
7872 struct i802_bss *bss = priv;
7873
7874 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7875 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7876
7877 if (opp_ps != -1 || ctwindow != -1) {
7878 #ifdef ANDROID_P2P
7879 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7880 #else /* ANDROID_P2P */
7881 return -1; /* Not yet supported */
7882 #endif /* ANDROID_P2P */
7883 }
7884
7885 if (legacy_ps == -1)
7886 return 0;
7887 if (legacy_ps != 0 && legacy_ps != 1)
7888 return -1; /* Not yet supported */
7889
7890 return nl80211_set_power_save(bss, legacy_ps);
7891 }
7892
7893
7894 static int nl80211_start_radar_detection(void *priv,
7895 struct hostapd_freq_params *freq)
7896 {
7897 struct i802_bss *bss = priv;
7898 struct wpa_driver_nl80211_data *drv = bss->drv;
7899 struct nl_msg *msg;
7900 int ret;
7901
7902 wpa_printf(MSG_DEBUG, "nl80211: Start radar detection (CAC) %d MHz (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
7903 freq->freq, freq->ht_enabled, freq->vht_enabled,
7904 freq->bandwidth, freq->center_freq1, freq->center_freq2);
7905
7906 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7907 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7908 "detection");
7909 return -1;
7910 }
7911
7912 msg = nlmsg_alloc();
7913 if (!msg)
7914 return -1;
7915
7916 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
7917 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7918
7919 if (nl80211_put_freq_params(msg, freq) < 0)
7920 goto nla_put_failure;
7921
7922 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7923 msg = NULL;
7924 if (ret == 0)
7925 return 0;
7926 wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7927 "%d (%s)", ret, strerror(-ret));
7928 nla_put_failure:
7929 nlmsg_free(msg);
7930 return -1;
7931 }
7932
7933 #ifdef CONFIG_TDLS
7934
7935 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7936 u8 dialog_token, u16 status_code,
7937 u32 peer_capab, int initiator, const u8 *buf,
7938 size_t len)
7939 {
7940 struct i802_bss *bss = priv;
7941 struct wpa_driver_nl80211_data *drv = bss->drv;
7942 struct nl_msg *msg;
7943
7944 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7945 return -EOPNOTSUPP;
7946
7947 if (!dst)
7948 return -EINVAL;
7949
7950 msg = nlmsg_alloc();
7951 if (!msg)
7952 return -ENOMEM;
7953
7954 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7955 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7956 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7957 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7958 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7959 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7960 if (peer_capab) {
7961 /*
7962 * The internal enum tdls_peer_capability definition is
7963 * currently identical with the nl80211 enum
7964 * nl80211_tdls_peer_capability, so no conversion is needed
7965 * here.
7966 */
7967 NLA_PUT_U32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY, peer_capab);
7968 }
7969 if (initiator)
7970 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_INITIATOR);
7971 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7972
7973 return send_and_recv_msgs(drv, msg, NULL, NULL);
7974
7975 nla_put_failure:
7976 nlmsg_free(msg);
7977 return -ENOBUFS;
7978 }
7979
7980
7981 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7982 {
7983 struct i802_bss *bss = priv;
7984 struct wpa_driver_nl80211_data *drv = bss->drv;
7985 struct nl_msg *msg;
7986 enum nl80211_tdls_operation nl80211_oper;
7987
7988 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7989 return -EOPNOTSUPP;
7990
7991 switch (oper) {
7992 case TDLS_DISCOVERY_REQ:
7993 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7994 break;
7995 case TDLS_SETUP:
7996 nl80211_oper = NL80211_TDLS_SETUP;
7997 break;
7998 case TDLS_TEARDOWN:
7999 nl80211_oper = NL80211_TDLS_TEARDOWN;
8000 break;
8001 case TDLS_ENABLE_LINK:
8002 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8003 break;
8004 case TDLS_DISABLE_LINK:
8005 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8006 break;
8007 case TDLS_ENABLE:
8008 return 0;
8009 case TDLS_DISABLE:
8010 return 0;
8011 default:
8012 return -EINVAL;
8013 }
8014
8015 msg = nlmsg_alloc();
8016 if (!msg)
8017 return -ENOMEM;
8018
8019 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8020 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8021 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8022 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8023
8024 return send_and_recv_msgs(drv, msg, NULL, NULL);
8025
8026 nla_put_failure:
8027 nlmsg_free(msg);
8028 return -ENOBUFS;
8029 }
8030
8031 #endif /* CONFIG TDLS */
8032
8033
8034 static int driver_nl80211_set_key(const char *ifname, void *priv,
8035 enum wpa_alg alg, const u8 *addr,
8036 int key_idx, int set_tx,
8037 const u8 *seq, size_t seq_len,
8038 const u8 *key, size_t key_len)
8039 {
8040 struct i802_bss *bss = priv;
8041 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
8042 set_tx, seq, seq_len, key, key_len);
8043 }
8044
8045
8046 static int driver_nl80211_scan2(void *priv,
8047 struct wpa_driver_scan_params *params)
8048 {
8049 struct i802_bss *bss = priv;
8050 return wpa_driver_nl80211_scan(bss, params);
8051 }
8052
8053
8054 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
8055 int reason_code)
8056 {
8057 struct i802_bss *bss = priv;
8058 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
8059 }
8060
8061
8062 static int driver_nl80211_authenticate(void *priv,
8063 struct wpa_driver_auth_params *params)
8064 {
8065 struct i802_bss *bss = priv;
8066 return wpa_driver_nl80211_authenticate(bss, params);
8067 }
8068
8069
8070 static void driver_nl80211_deinit(void *priv)
8071 {
8072 struct i802_bss *bss = priv;
8073 wpa_driver_nl80211_deinit(bss);
8074 }
8075
8076
8077 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
8078 const char *ifname)
8079 {
8080 struct i802_bss *bss = priv;
8081 return wpa_driver_nl80211_if_remove(bss, type, ifname);
8082 }
8083
8084
8085 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
8086 size_t data_len, int noack)
8087 {
8088 struct i802_bss *bss = priv;
8089 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
8090 0, 0, 0, 0);
8091 }
8092
8093
8094 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
8095 {
8096 struct i802_bss *bss = priv;
8097 return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
8098 }
8099
8100
8101 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
8102 const char *ifname, int vlan_id)
8103 {
8104 struct i802_bss *bss = priv;
8105 return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
8106 }
8107
8108
8109 static int driver_nl80211_read_sta_data(void *priv,
8110 struct hostap_sta_driver_data *data,
8111 const u8 *addr)
8112 {
8113 struct i802_bss *bss = priv;
8114 return i802_read_sta_data(bss, data, addr);
8115 }
8116
8117
8118 static int driver_nl80211_send_action(void *priv, unsigned int freq,
8119 unsigned int wait_time,
8120 const u8 *dst, const u8 *src,
8121 const u8 *bssid,
8122 const u8 *data, size_t data_len,
8123 int no_cck)
8124 {
8125 struct i802_bss *bss = priv;
8126 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
8127 bssid, data, data_len, no_cck);
8128 }
8129
8130
8131 static int driver_nl80211_probe_req_report(void *priv, int report)
8132 {
8133 struct i802_bss *bss = priv;
8134 return wpa_driver_nl80211_probe_req_report(bss, report);
8135 }
8136
8137
8138 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8139 const u8 *ies, size_t ies_len)
8140 {
8141 int ret;
8142 struct nl_msg *msg;
8143 struct i802_bss *bss = priv;
8144 struct wpa_driver_nl80211_data *drv = bss->drv;
8145 u16 mdid = WPA_GET_LE16(md);
8146
8147 msg = nlmsg_alloc();
8148 if (!msg)
8149 return -ENOMEM;
8150
8151 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8152 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
8153 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8154 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
8155 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
8156
8157 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8158 if (ret) {
8159 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8160 "err=%d (%s)", ret, strerror(-ret));
8161 }
8162
8163 return ret;
8164
8165 nla_put_failure:
8166 nlmsg_free(msg);
8167 return -ENOBUFS;
8168 }
8169
8170
8171 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8172 {
8173 struct i802_bss *bss = priv;
8174 struct wpa_driver_nl80211_data *drv = bss->drv;
8175
8176 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8177 return NULL;
8178
8179 return bss->addr;
8180 }
8181
8182
8183 static const char * scan_state_str(enum scan_states scan_state)
8184 {
8185 switch (scan_state) {
8186 case NO_SCAN:
8187 return "NO_SCAN";
8188 case SCAN_REQUESTED:
8189 return "SCAN_REQUESTED";
8190 case SCAN_STARTED:
8191 return "SCAN_STARTED";
8192 case SCAN_COMPLETED:
8193 return "SCAN_COMPLETED";
8194 case SCAN_ABORTED:
8195 return "SCAN_ABORTED";
8196 case SCHED_SCAN_STARTED:
8197 return "SCHED_SCAN_STARTED";
8198 case SCHED_SCAN_STOPPED:
8199 return "SCHED_SCAN_STOPPED";
8200 case SCHED_SCAN_RESULTS:
8201 return "SCHED_SCAN_RESULTS";
8202 }
8203
8204 return "??";
8205 }
8206
8207
8208 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8209 {
8210 struct i802_bss *bss = priv;
8211 struct wpa_driver_nl80211_data *drv = bss->drv;
8212 int res;
8213 char *pos, *end;
8214
8215 pos = buf;
8216 end = buf + buflen;
8217
8218 res = os_snprintf(pos, end - pos,
8219 "ifindex=%d\n"
8220 "ifname=%s\n"
8221 "brname=%s\n"
8222 "addr=" MACSTR "\n"
8223 "freq=%d\n"
8224 "%s%s%s%s%s",
8225 bss->ifindex,
8226 bss->ifname,
8227 bss->brname,
8228 MAC2STR(bss->addr),
8229 bss->freq,
8230 bss->beacon_set ? "beacon_set=1\n" : "",
8231 bss->added_if_into_bridge ?
8232 "added_if_into_bridge=1\n" : "",
8233 bss->added_bridge ? "added_bridge=1\n" : "",
8234 bss->in_deinit ? "in_deinit=1\n" : "",
8235 bss->if_dynamic ? "if_dynamic=1\n" : "");
8236 if (res < 0 || res >= end - pos)
8237 return pos - buf;
8238 pos += res;
8239
8240 if (bss->wdev_id_set) {
8241 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8242 (unsigned long long) bss->wdev_id);
8243 if (res < 0 || res >= end - pos)
8244 return pos - buf;
8245 pos += res;
8246 }
8247
8248 res = os_snprintf(pos, end - pos,
8249 "phyname=%s\n"
8250 "perm_addr=" MACSTR "\n"
8251 "drv_ifindex=%d\n"
8252 "operstate=%d\n"
8253 "scan_state=%s\n"
8254 "auth_bssid=" MACSTR "\n"
8255 "auth_attempt_bssid=" MACSTR "\n"
8256 "bssid=" MACSTR "\n"
8257 "prev_bssid=" MACSTR "\n"
8258 "associated=%d\n"
8259 "assoc_freq=%u\n"
8260 "monitor_sock=%d\n"
8261 "monitor_ifidx=%d\n"
8262 "monitor_refcount=%d\n"
8263 "last_mgmt_freq=%u\n"
8264 "eapol_tx_sock=%d\n"
8265 "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8266 drv->phyname,
8267 MAC2STR(drv->perm_addr),
8268 drv->ifindex,
8269 drv->operstate,
8270 scan_state_str(drv->scan_state),
8271 MAC2STR(drv->auth_bssid),
8272 MAC2STR(drv->auth_attempt_bssid),
8273 MAC2STR(drv->bssid),
8274 MAC2STR(drv->prev_bssid),
8275 drv->associated,
8276 drv->assoc_freq,
8277 drv->monitor_sock,
8278 drv->monitor_ifidx,
8279 drv->monitor_refcount,
8280 drv->last_mgmt_freq,
8281 drv->eapol_tx_sock,
8282 drv->ignore_if_down_event ?
8283 "ignore_if_down_event=1\n" : "",
8284 drv->scan_complete_events ?
8285 "scan_complete_events=1\n" : "",
8286 drv->disabled_11b_rates ?
8287 "disabled_11b_rates=1\n" : "",
8288 drv->pending_remain_on_chan ?
8289 "pending_remain_on_chan=1\n" : "",
8290 drv->in_interface_list ? "in_interface_list=1\n" : "",
8291 drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8292 drv->poll_command_supported ?
8293 "poll_command_supported=1\n" : "",
8294 drv->data_tx_status ? "data_tx_status=1\n" : "",
8295 drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8296 drv->retry_auth ? "retry_auth=1\n" : "",
8297 drv->use_monitor ? "use_monitor=1\n" : "",
8298 drv->ignore_next_local_disconnect ?
8299 "ignore_next_local_disconnect=1\n" : "",
8300 drv->ignore_next_local_deauth ?
8301 "ignore_next_local_deauth=1\n" : "");
8302 if (res < 0 || res >= end - pos)
8303 return pos - buf;
8304 pos += res;
8305
8306 if (drv->has_capability) {
8307 res = os_snprintf(pos, end - pos,
8308 "capa.key_mgmt=0x%x\n"
8309 "capa.enc=0x%x\n"
8310 "capa.auth=0x%x\n"
8311 "capa.flags=0x%llx\n"
8312 "capa.max_scan_ssids=%d\n"
8313 "capa.max_sched_scan_ssids=%d\n"
8314 "capa.sched_scan_supported=%d\n"
8315 "capa.max_match_sets=%d\n"
8316 "capa.max_remain_on_chan=%u\n"
8317 "capa.max_stations=%u\n"
8318 "capa.probe_resp_offloads=0x%x\n"
8319 "capa.max_acl_mac_addrs=%u\n"
8320 "capa.num_multichan_concurrent=%u\n",
8321 drv->capa.key_mgmt,
8322 drv->capa.enc,
8323 drv->capa.auth,
8324 (unsigned long long) drv->capa.flags,
8325 drv->capa.max_scan_ssids,
8326 drv->capa.max_sched_scan_ssids,
8327 drv->capa.sched_scan_supported,
8328 drv->capa.max_match_sets,
8329 drv->capa.max_remain_on_chan,
8330 drv->capa.max_stations,
8331 drv->capa.probe_resp_offloads,
8332 drv->capa.max_acl_mac_addrs,
8333 drv->capa.num_multichan_concurrent);
8334 if (res < 0 || res >= end - pos)
8335 return pos - buf;
8336 pos += res;
8337 }
8338
8339 return pos - buf;
8340 }
8341
8342
8343 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8344 {
8345 if (settings->head)
8346 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
8347 settings->head_len, settings->head);
8348
8349 if (settings->tail)
8350 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
8351 settings->tail_len, settings->tail);
8352
8353 if (settings->beacon_ies)
8354 NLA_PUT(msg, NL80211_ATTR_IE,
8355 settings->beacon_ies_len, settings->beacon_ies);
8356
8357 if (settings->proberesp_ies)
8358 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
8359 settings->proberesp_ies_len, settings->proberesp_ies);
8360
8361 if (settings->assocresp_ies)
8362 NLA_PUT(msg,
8363 NL80211_ATTR_IE_ASSOC_RESP,
8364 settings->assocresp_ies_len, settings->assocresp_ies);
8365
8366 if (settings->probe_resp)
8367 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
8368 settings->probe_resp_len, settings->probe_resp);
8369
8370 return 0;
8371
8372 nla_put_failure:
8373 return -ENOBUFS;
8374 }
8375
8376
8377 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8378 {
8379 struct nl_msg *msg;
8380 struct i802_bss *bss = priv;
8381 struct wpa_driver_nl80211_data *drv = bss->drv;
8382 struct nlattr *beacon_csa;
8383 int ret = -ENOBUFS;
8384
8385 wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8386 settings->cs_count, settings->block_tx,
8387 settings->freq_params.freq, settings->freq_params.bandwidth,
8388 settings->freq_params.center_freq1,
8389 settings->freq_params.center_freq2);
8390
8391 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8392 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8393 return -EOPNOTSUPP;
8394 }
8395
8396 if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8397 (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8398 return -EOPNOTSUPP;
8399
8400 /* check settings validity */
8401 if (!settings->beacon_csa.tail ||
8402 ((settings->beacon_csa.tail_len <=
8403 settings->counter_offset_beacon) ||
8404 (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8405 settings->cs_count)))
8406 return -EINVAL;
8407
8408 if (settings->beacon_csa.probe_resp &&
8409 ((settings->beacon_csa.probe_resp_len <=
8410 settings->counter_offset_presp) ||
8411 (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8412 settings->cs_count)))
8413 return -EINVAL;
8414
8415 msg = nlmsg_alloc();
8416 if (!msg)
8417 return -ENOMEM;
8418
8419 nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
8420 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8421 NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
8422 ret = nl80211_put_freq_params(msg, &settings->freq_params);
8423 if (ret)
8424 goto error;
8425
8426 if (settings->block_tx)
8427 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
8428
8429 /* beacon_after params */
8430 ret = set_beacon_data(msg, &settings->beacon_after);
8431 if (ret)
8432 goto error;
8433
8434 /* beacon_csa params */
8435 beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8436 if (!beacon_csa)
8437 goto nla_put_failure;
8438
8439 ret = set_beacon_data(msg, &settings->beacon_csa);
8440 if (ret)
8441 goto error;
8442
8443 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8444 settings->counter_offset_beacon);
8445
8446 if (settings->beacon_csa.probe_resp)
8447 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8448 settings->counter_offset_presp);
8449
8450 nla_nest_end(msg, beacon_csa);
8451 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8452 if (ret) {
8453 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8454 ret, strerror(-ret));
8455 }
8456 return ret;
8457
8458 nla_put_failure:
8459 ret = -ENOBUFS;
8460 error:
8461 nlmsg_free(msg);
8462 wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8463 return ret;
8464 }
8465
8466
8467 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8468 u8 user_priority, u16 admitted_time)
8469 {
8470 struct i802_bss *bss = priv;
8471 struct wpa_driver_nl80211_data *drv = bss->drv;
8472 struct nl_msg *msg;
8473 int ret;
8474
8475 wpa_printf(MSG_DEBUG,
8476 "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8477 tsid, admitted_time, user_priority);
8478
8479 if (!is_sta_interface(drv->nlmode))
8480 return -ENOTSUP;
8481
8482 msg = nlmsg_alloc();
8483 if (!msg)
8484 return -ENOMEM;
8485
8486 nl80211_cmd(drv, msg, 0, NL80211_CMD_ADD_TX_TS);
8487 if (nl80211_set_iface_id(msg, bss) < 0)
8488 goto nla_put_failure;
8489
8490 NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8491 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8492 NLA_PUT_U8(msg, NL80211_ATTR_USER_PRIO, user_priority);
8493 NLA_PUT_U16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time);
8494
8495 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8496 if (ret)
8497 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8498 ret, strerror(-ret));
8499 return ret;
8500
8501 nla_put_failure:
8502 nlmsg_free(msg);
8503 return -ENOBUFS;
8504 }
8505
8506
8507 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8508 {
8509 struct i802_bss *bss = priv;
8510 struct wpa_driver_nl80211_data *drv = bss->drv;
8511 struct nl_msg *msg;
8512 int ret;
8513
8514 wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8515
8516 if (!is_sta_interface(drv->nlmode))
8517 return -ENOTSUP;
8518
8519 msg = nlmsg_alloc();
8520 if (!msg)
8521 return -ENOMEM;
8522
8523 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_TX_TS);
8524 if (nl80211_set_iface_id(msg, bss) < 0)
8525 goto nla_put_failure;
8526
8527 NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8528 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8529
8530 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8531 if (ret)
8532 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8533 ret, strerror(-ret));
8534 return ret;
8535
8536 nla_put_failure:
8537 nlmsg_free(msg);
8538 return -ENOBUFS;
8539 }
8540
8541
8542 #ifdef CONFIG_TESTING_OPTIONS
8543 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8544 {
8545 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8546 struct wpabuf *buf = arg;
8547
8548 if (!buf)
8549 return NL_SKIP;
8550
8551 if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8552 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8553 return NL_SKIP;
8554 }
8555
8556 wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8557 genlmsg_attrlen(gnlh, 0));
8558
8559 return NL_SKIP;
8560 }
8561 #endif /* CONFIG_TESTING_OPTIONS */
8562
8563
8564 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8565 {
8566 struct nlattr *tb[NL80211_ATTR_MAX + 1];
8567 struct nlattr *nl_vendor_reply, *nl;
8568 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8569 struct wpabuf *buf = arg;
8570 int rem;
8571
8572 if (!buf)
8573 return NL_SKIP;
8574
8575 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8576 genlmsg_attrlen(gnlh, 0), NULL);
8577 nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8578
8579 if (!nl_vendor_reply)
8580 return NL_SKIP;
8581
8582 if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8583 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8584 return NL_SKIP;
8585 }
8586
8587 nla_for_each_nested(nl, nl_vendor_reply, rem) {
8588 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8589 }
8590
8591 return NL_SKIP;
8592 }
8593
8594
8595 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8596 unsigned int subcmd, const u8 *data,
8597 size_t data_len, struct wpabuf *buf)
8598 {
8599 struct i802_bss *bss = priv;
8600 struct wpa_driver_nl80211_data *drv = bss->drv;
8601 struct nl_msg *msg;
8602 int ret;
8603
8604 msg = nlmsg_alloc();
8605 if (!msg)
8606 return -ENOMEM;
8607
8608 #ifdef CONFIG_TESTING_OPTIONS
8609 if (vendor_id == 0xffffffff) {
8610 nl80211_cmd(drv, msg, 0, subcmd);
8611 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8612 0)
8613 goto nla_put_failure;
8614 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8615 if (ret)
8616 wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8617 ret);
8618 return ret;
8619 }
8620 #endif /* CONFIG_TESTING_OPTIONS */
8621
8622 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8623 if (nl80211_set_iface_id(msg, bss) < 0)
8624 goto nla_put_failure;
8625 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, vendor_id);
8626 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd);
8627 if (data)
8628 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, data_len, data);
8629
8630 ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8631 if (ret)
8632 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8633 ret);
8634 return ret;
8635
8636 nla_put_failure:
8637 nlmsg_free(msg);
8638 return -ENOBUFS;
8639 }
8640
8641
8642 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8643 u8 qos_map_set_len)
8644 {
8645 struct i802_bss *bss = priv;
8646 struct wpa_driver_nl80211_data *drv = bss->drv;
8647 struct nl_msg *msg;
8648 int ret;
8649
8650 msg = nlmsg_alloc();
8651 if (!msg)
8652 return -ENOMEM;
8653
8654 wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8655 qos_map_set, qos_map_set_len);
8656
8657 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
8658 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8659 NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
8660
8661 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8662 if (ret)
8663 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8664
8665 return ret;
8666
8667 nla_put_failure:
8668 nlmsg_free(msg);
8669 return -ENOBUFS;
8670 }
8671
8672
8673 static int nl80211_set_wowlan(void *priv,
8674 const struct wowlan_triggers *triggers)
8675 {
8676 struct i802_bss *bss = priv;
8677 struct wpa_driver_nl80211_data *drv = bss->drv;
8678 struct nl_msg *msg;
8679 struct nlattr *wowlan_triggers;
8680 int ret;
8681
8682 msg = nlmsg_alloc();
8683 if (!msg)
8684 return -ENOMEM;
8685
8686 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8687
8688 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WOWLAN);
8689 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8690
8691 wowlan_triggers = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8692 if (!wowlan_triggers)
8693 goto nla_put_failure;
8694
8695 if (triggers->any)
8696 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
8697 if (triggers->disconnect)
8698 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
8699 if (triggers->magic_pkt)
8700 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
8701 if (triggers->gtk_rekey_failure)
8702 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
8703 if (triggers->eap_identity_req)
8704 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
8705 if (triggers->four_way_handshake)
8706 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
8707 if (triggers->rfkill_release)
8708 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
8709
8710 nla_nest_end(msg, wowlan_triggers);
8711
8712 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8713 if (ret)
8714 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8715
8716 return ret;
8717
8718 nla_put_failure:
8719 nlmsg_free(msg);
8720 return -ENOBUFS;
8721 }
8722
8723
8724 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8725 {
8726 struct i802_bss *bss = priv;
8727 struct wpa_driver_nl80211_data *drv = bss->drv;
8728 struct nl_msg *msg;
8729 struct nlattr *params;
8730
8731 wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8732
8733 if (!drv->roaming_vendor_cmd_avail) {
8734 wpa_printf(MSG_DEBUG,
8735 "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8736 return -1;
8737 }
8738
8739 msg = nlmsg_alloc();
8740 if (!msg)
8741 return -ENOMEM;
8742
8743 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8744
8745 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8746 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
8747 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8748 QCA_NL80211_VENDOR_SUBCMD_ROAMING);
8749
8750 params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
8751 if (!params)
8752 goto nla_put_failure;
8753 NLA_PUT_U32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8754 allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8755 QCA_ROAMING_NOT_ALLOWED);
8756 if (bssid)
8757 NLA_PUT(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid);
8758 nla_nest_end(msg, params);
8759
8760 return send_and_recv_msgs(drv, msg, NULL, NULL);
8761
8762 nla_put_failure:
8763 nlmsg_free(msg);
8764 return -1;
8765 }
8766
8767
8768 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8769 {
8770 struct i802_bss *bss = priv;
8771 struct wpa_driver_nl80211_data *drv = bss->drv;
8772 int new_addr = addr != NULL;
8773
8774 if (!addr)
8775 addr = drv->perm_addr;
8776
8777 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8778 return -1;
8779
8780 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8781 {
8782 wpa_printf(MSG_DEBUG,
8783 "nl80211: failed to set_mac_addr for %s to " MACSTR,
8784 bss->ifname, MAC2STR(addr));
8785 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8786 1) < 0) {
8787 wpa_printf(MSG_DEBUG,
8788 "nl80211: Could not restore interface UP after failed set_mac_addr");
8789 }
8790 return -1;
8791 }
8792
8793 wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8794 bss->ifname, MAC2STR(addr));
8795 drv->addr_changed = new_addr;
8796 os_memcpy(bss->addr, addr, ETH_ALEN);
8797
8798 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8799 {
8800 wpa_printf(MSG_DEBUG,
8801 "nl80211: Could not restore interface UP after set_mac_addr");
8802 }
8803
8804 return 0;
8805 }
8806
8807
8808 #ifdef CONFIG_MESH
8809
8810 static int wpa_driver_nl80211_init_mesh(void *priv)
8811 {
8812 if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8813 wpa_printf(MSG_INFO,
8814 "nl80211: Failed to set interface into mesh mode");
8815 return -1;
8816 }
8817 return 0;
8818 }
8819
8820
8821 static int
8822 wpa_driver_nl80211_join_mesh(void *priv,
8823 struct wpa_driver_mesh_join_params *params)
8824 {
8825 struct i802_bss *bss = priv;
8826 struct wpa_driver_nl80211_data *drv = bss->drv;
8827 struct nl_msg *msg;
8828 struct nlattr *container;
8829 int ret = 0;
8830
8831 msg = nlmsg_alloc();
8832 if (!msg)
8833 return -1;
8834
8835 wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8836 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_MESH);
8837
8838 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8839 if (params->freq) {
8840 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
8841 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8842 }
8843
8844 if (params->ht_mode) {
8845 unsigned int ht_value;
8846 char *ht_mode = "";
8847
8848 switch (params->ht_mode) {
8849 default:
8850 case CHAN_NO_HT:
8851 ht_value = NL80211_CHAN_NO_HT;
8852 ht_mode = "NOHT";
8853 break;
8854 case CHAN_HT20:
8855 ht_value = NL80211_CHAN_HT20;
8856 ht_mode = "HT20";
8857 break;
8858 case CHAN_HT40PLUS:
8859 ht_value = NL80211_CHAN_HT40PLUS;
8860 ht_mode = "HT40+";
8861 break;
8862 case CHAN_HT40MINUS:
8863 ht_value = NL80211_CHAN_HT40MINUS;
8864 ht_mode = "HT40-";
8865 break;
8866 }
8867 wpa_printf(MSG_DEBUG, " * ht_mode=%s", ht_mode);
8868 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value);
8869 }
8870
8871 if (params->basic_rates) {
8872 u8 rates[NL80211_MAX_SUPP_RATES];
8873 u8 rates_len = 0;
8874 int i;
8875
8876 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8877 if (params->basic_rates[i] < 0)
8878 break;
8879 rates[rates_len++] = params->basic_rates[i] / 5;
8880 }
8881
8882 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
8883 }
8884
8885 if (params->meshid) {
8886 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
8887 params->meshid, params->meshid_len);
8888 NLA_PUT(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8889 params->meshid);
8890 }
8891
8892 wpa_printf(MSG_DEBUG, " * flags=%08X", params->flags);
8893
8894 container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8895 if (!container)
8896 goto nla_put_failure;
8897
8898 if (params->ies) {
8899 wpa_hexdump(MSG_DEBUG, " * IEs", params->ies, params->ie_len);
8900 NLA_PUT(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8901 params->ies);
8902 }
8903 /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8904 if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8905 NLA_PUT_U8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1);
8906 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AUTH);
8907 }
8908 if (params->flags & WPA_DRIVER_MESH_FLAG_AMPE)
8909 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AMPE);
8910 if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8911 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_MPM);
8912 nla_nest_end(msg, container);
8913
8914 container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8915 if (!container)
8916 goto nla_put_failure;
8917
8918 if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS))
8919 NLA_PUT_U32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0);
8920 nla_nest_end(msg, container);
8921
8922 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8923 msg = NULL;
8924 if (ret) {
8925 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8926 ret, strerror(-ret));
8927 goto nla_put_failure;
8928 }
8929 ret = 0;
8930 bss->freq = params->freq;
8931 wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8932
8933
8934 nla_put_failure:
8935 nlmsg_free(msg);
8936 return ret;
8937 }
8938
8939
8940 static int wpa_driver_nl80211_leave_mesh(void *priv)
8941 {
8942 struct i802_bss *bss = priv;
8943 struct wpa_driver_nl80211_data *drv = bss->drv;
8944 struct nl_msg *msg;
8945 int ret = 0;
8946
8947 msg = nlmsg_alloc();
8948 if (!msg)
8949 return -1;
8950
8951 wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8952 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_MESH);
8953 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8954
8955 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8956 msg = NULL;
8957 if (ret) {
8958 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8959 ret, strerror(-ret));
8960 goto nla_put_failure;
8961 }
8962 ret = 0;
8963 wpa_printf(MSG_DEBUG, "nl80211: mesh leave request send successfully");
8964
8965 nla_put_failure:
8966 nlmsg_free(msg);
8967 return ret;
8968 }
8969
8970 #endif /* CONFIG_MESH */
8971
8972
8973 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8974 const u8 *ipaddr, int prefixlen,
8975 const u8 *addr)
8976 {
8977 #ifdef CONFIG_LIBNL3_ROUTE
8978 struct i802_bss *bss = priv;
8979 struct wpa_driver_nl80211_data *drv = bss->drv;
8980 struct rtnl_neigh *rn;
8981 struct nl_addr *nl_ipaddr = NULL;
8982 struct nl_addr *nl_lladdr = NULL;
8983 int family, addrsize;
8984 int res;
8985
8986 if (!ipaddr || prefixlen == 0 || !addr)
8987 return -EINVAL;
8988
8989 if (bss->br_ifindex == 0) {
8990 wpa_printf(MSG_DEBUG,
8991 "nl80211: bridge must be set before adding an ip neigh to it");
8992 return -1;
8993 }
8994
8995 if (!drv->rtnl_sk) {
8996 wpa_printf(MSG_DEBUG,
8997 "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8998 return -1;
8999 }
9000
9001 if (version == 4) {
9002 family = AF_INET;
9003 addrsize = 4;
9004 } else if (version == 6) {
9005 family = AF_INET6;
9006 addrsize = 16;
9007 } else {
9008 return -EINVAL;
9009 }
9010
9011 rn = rtnl_neigh_alloc();
9012 if (rn == NULL)
9013 return -ENOMEM;
9014
9015 /* set the destination ip address for neigh */
9016 nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9017 if (nl_ipaddr == NULL) {
9018 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9019 res = -ENOMEM;
9020 goto errout;
9021 }
9022 nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
9023 res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9024 if (res) {
9025 wpa_printf(MSG_DEBUG,
9026 "nl80211: neigh set destination addr failed");
9027 goto errout;
9028 }
9029
9030 /* set the corresponding lladdr for neigh */
9031 nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
9032 if (nl_lladdr == NULL) {
9033 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
9034 res = -ENOMEM;
9035 goto errout;
9036 }
9037 rtnl_neigh_set_lladdr(rn, nl_lladdr);
9038
9039 rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9040 rtnl_neigh_set_state(rn, NUD_PERMANENT);
9041
9042 res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
9043 if (res) {
9044 wpa_printf(MSG_DEBUG,
9045 "nl80211: Adding bridge ip neigh failed: %s",
9046 strerror(errno));
9047 }
9048 errout:
9049 if (nl_lladdr)
9050 nl_addr_put(nl_lladdr);
9051 if (nl_ipaddr)
9052 nl_addr_put(nl_ipaddr);
9053 if (rn)
9054 rtnl_neigh_put(rn);
9055 return res;
9056 #else /* CONFIG_LIBNL3_ROUTE */
9057 return -1;
9058 #endif /* CONFIG_LIBNL3_ROUTE */
9059 }
9060
9061
9062 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
9063 const u8 *ipaddr)
9064 {
9065 #ifdef CONFIG_LIBNL3_ROUTE
9066 struct i802_bss *bss = priv;
9067 struct wpa_driver_nl80211_data *drv = bss->drv;
9068 struct rtnl_neigh *rn;
9069 struct nl_addr *nl_ipaddr;
9070 int family, addrsize;
9071 int res;
9072
9073 if (!ipaddr)
9074 return -EINVAL;
9075
9076 if (version == 4) {
9077 family = AF_INET;
9078 addrsize = 4;
9079 } else if (version == 6) {
9080 family = AF_INET6;
9081 addrsize = 16;
9082 } else {
9083 return -EINVAL;
9084 }
9085
9086 if (bss->br_ifindex == 0) {
9087 wpa_printf(MSG_DEBUG,
9088 "nl80211: bridge must be set to delete an ip neigh");
9089 return -1;
9090 }
9091
9092 if (!drv->rtnl_sk) {
9093 wpa_printf(MSG_DEBUG,
9094 "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9095 return -1;
9096 }
9097
9098 rn = rtnl_neigh_alloc();
9099 if (rn == NULL)
9100 return -ENOMEM;
9101
9102 /* set the destination ip address for neigh */
9103 nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9104 if (nl_ipaddr == NULL) {
9105 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9106 res = -ENOMEM;
9107 goto errout;
9108 }
9109 res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9110 if (res) {
9111 wpa_printf(MSG_DEBUG,
9112 "nl80211: neigh set destination addr failed");
9113 goto errout;
9114 }
9115
9116 rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9117
9118 res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
9119 if (res) {
9120 wpa_printf(MSG_DEBUG,
9121 "nl80211: Deleting bridge ip neigh failed: %s",
9122 strerror(errno));
9123 }
9124 errout:
9125 if (nl_ipaddr)
9126 nl_addr_put(nl_ipaddr);
9127 if (rn)
9128 rtnl_neigh_put(rn);
9129 return res;
9130 #else /* CONFIG_LIBNL3_ROUTE */
9131 return -1;
9132 #endif /* CONFIG_LIBNL3_ROUTE */
9133 }
9134
9135
9136 static int linux_write_system_file(const char *path, unsigned int val)
9137 {
9138 char buf[50];
9139 int fd, len;
9140
9141 len = os_snprintf(buf, sizeof(buf), "%u\n", val);
9142 if (len < 0)
9143 return -1;
9144
9145 fd = open(path, O_WRONLY);
9146 if (fd < 0)
9147 return -1;
9148
9149 if (write(fd, buf, len) < 0) {
9150 wpa_printf(MSG_DEBUG,
9151 "nl80211: Failed to write Linux system file: %s with the value of %d",
9152 path, val);
9153 close(fd);
9154 return -1;
9155 }
9156 close(fd);
9157
9158 return 0;
9159 }
9160
9161
9162 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
9163 {
9164 switch (attr) {
9165 case DRV_BR_PORT_ATTR_PROXYARP:
9166 return "proxyarp";
9167 case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
9168 return "hairpin_mode";
9169 }
9170
9171 return NULL;
9172 }
9173
9174
9175 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
9176 unsigned int val)
9177 {
9178 struct i802_bss *bss = priv;
9179 char path[128];
9180 const char *attr_txt;
9181
9182 attr_txt = drv_br_port_attr_str(attr);
9183 if (attr_txt == NULL)
9184 return -EINVAL;
9185
9186 os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
9187 bss->ifname, attr_txt);
9188
9189 if (linux_write_system_file(path, val))
9190 return -1;
9191
9192 return 0;
9193 }
9194
9195
9196 static const char * drv_br_net_param_str(enum drv_br_net_param param)
9197 {
9198 switch (param) {
9199 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9200 return "arp_accept";
9201 }
9202
9203 return NULL;
9204 }
9205
9206
9207 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
9208 unsigned int val)
9209 {
9210 struct i802_bss *bss = priv;
9211 char path[128];
9212 const char *param_txt;
9213 int ip_version = 4;
9214
9215 param_txt = drv_br_net_param_str(param);
9216 if (param_txt == NULL)
9217 return -EINVAL;
9218
9219 switch (param) {
9220 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9221 ip_version = 4;
9222 break;
9223 default:
9224 return -EINVAL;
9225 }
9226
9227 os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
9228 ip_version, bss->brname, param_txt);
9229
9230 if (linux_write_system_file(path, val))
9231 return -1;
9232
9233 return 0;
9234 }
9235
9236
9237 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9238 .name = "nl80211",
9239 .desc = "Linux nl80211/cfg80211",
9240 .get_bssid = wpa_driver_nl80211_get_bssid,
9241 .get_ssid = wpa_driver_nl80211_get_ssid,
9242 .set_key = driver_nl80211_set_key,
9243 .scan2 = driver_nl80211_scan2,
9244 .sched_scan = wpa_driver_nl80211_sched_scan,
9245 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9246 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9247 .deauthenticate = driver_nl80211_deauthenticate,
9248 .authenticate = driver_nl80211_authenticate,
9249 .associate = wpa_driver_nl80211_associate,
9250 .global_init = nl80211_global_init,
9251 .global_deinit = nl80211_global_deinit,
9252 .init2 = wpa_driver_nl80211_init,
9253 .deinit = driver_nl80211_deinit,
9254 .get_capa = wpa_driver_nl80211_get_capa,
9255 .set_operstate = wpa_driver_nl80211_set_operstate,
9256 .set_supp_port = wpa_driver_nl80211_set_supp_port,
9257 .set_country = wpa_driver_nl80211_set_country,
9258 .get_country = wpa_driver_nl80211_get_country,
9259 .set_ap = wpa_driver_nl80211_set_ap,
9260 .set_acl = wpa_driver_nl80211_set_acl,
9261 .if_add = wpa_driver_nl80211_if_add,
9262 .if_remove = driver_nl80211_if_remove,
9263 .send_mlme = driver_nl80211_send_mlme,
9264 .get_hw_feature_data = nl80211_get_hw_feature_data,
9265 .sta_add = wpa_driver_nl80211_sta_add,
9266 .sta_remove = driver_nl80211_sta_remove,
9267 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9268 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9269 .hapd_init = i802_init,
9270 .hapd_deinit = i802_deinit,
9271 .set_wds_sta = i802_set_wds_sta,
9272 .get_seqnum = i802_get_seqnum,
9273 .flush = i802_flush,
9274 .get_inact_sec = i802_get_inact_sec,
9275 .sta_clear_stats = i802_sta_clear_stats,
9276 .set_rts = i802_set_rts,
9277 .set_frag = i802_set_frag,
9278 .set_tx_queue_params = i802_set_tx_queue_params,
9279 .set_sta_vlan = driver_nl80211_set_sta_vlan,
9280 .sta_deauth = i802_sta_deauth,
9281 .sta_disassoc = i802_sta_disassoc,
9282 .read_sta_data = driver_nl80211_read_sta_data,
9283 .set_freq = i802_set_freq,
9284 .send_action = driver_nl80211_send_action,
9285 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9286 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9287 .cancel_remain_on_channel =
9288 wpa_driver_nl80211_cancel_remain_on_channel,
9289 .probe_req_report = driver_nl80211_probe_req_report,
9290 .deinit_ap = wpa_driver_nl80211_deinit_ap,
9291 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9292 .resume = wpa_driver_nl80211_resume,
9293 .send_ft_action = nl80211_send_ft_action,
9294 .signal_monitor = nl80211_signal_monitor,
9295 .signal_poll = nl80211_signal_poll,
9296 .send_frame = nl80211_send_frame,
9297 .shared_freq = wpa_driver_nl80211_shared_freq,
9298 .set_param = nl80211_set_param,
9299 .get_radio_name = nl80211_get_radio_name,
9300 .add_pmkid = nl80211_add_pmkid,
9301 .remove_pmkid = nl80211_remove_pmkid,
9302 .flush_pmkid = nl80211_flush_pmkid,
9303 .set_rekey_info = nl80211_set_rekey_info,
9304 .poll_client = nl80211_poll_client,
9305 .set_p2p_powersave = nl80211_set_p2p_powersave,
9306 .start_dfs_cac = nl80211_start_radar_detection,
9307 .stop_ap = wpa_driver_nl80211_stop_ap,
9308 #ifdef CONFIG_TDLS
9309 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9310 .tdls_oper = nl80211_tdls_oper,
9311 #endif /* CONFIG_TDLS */
9312 .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9313 .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9314 .get_survey = wpa_driver_nl80211_get_survey,
9315 .status = wpa_driver_nl80211_status,
9316 .switch_channel = nl80211_switch_channel,
9317 #ifdef ANDROID_P2P
9318 .set_noa = wpa_driver_set_p2p_noa,
9319 .get_noa = wpa_driver_get_p2p_noa,
9320 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9321 #endif /* ANDROID_P2P */
9322 #ifdef ANDROID
9323 .driver_cmd = wpa_driver_nl80211_driver_cmd,
9324 #endif /* ANDROID */
9325 .vendor_cmd = nl80211_vendor_cmd,
9326 .set_qos_map = nl80211_set_qos_map,
9327 .set_wowlan = nl80211_set_wowlan,
9328 .roaming = nl80211_roaming,
9329 .set_mac_addr = nl80211_set_mac_addr,
9330 #ifdef CONFIG_MESH
9331 .init_mesh = wpa_driver_nl80211_init_mesh,
9332 .join_mesh = wpa_driver_nl80211_join_mesh,
9333 .leave_mesh = wpa_driver_nl80211_leave_mesh,
9334 #endif /* CONFIG_MESH */
9335 .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9336 .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9337 .br_port_set_attr = wpa_driver_br_port_set_attr,
9338 .br_set_net_param = wpa_driver_br_set_net_param,
9339 .add_tx_ts = nl80211_add_ts,
9340 .del_tx_ts = nl80211_del_ts,
9341 };
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