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[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 drv->ignore_if_down_event = 0;
931 return;
932 }
933 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
934 if (drv->ignore_if_down_event) {
935 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
936 "event generated by mode change");
937 drv->ignore_if_down_event = 0;
938 } else {
939 drv->if_disabled = 1;
940 wpa_supplicant_event(drv->ctx,
941 EVENT_INTERFACE_DISABLED, NULL);
942
943 /*
944 * Try to get drv again, since it may be removed as
945 * part of the EVENT_INTERFACE_DISABLED handling for
946 * dynamic interfaces
947 */
948 drv = nl80211_find_drv(global, ifi->ifi_index,
949 buf, len);
950 if (!drv)
951 return;
952 }
953 }
954
955 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
956 if (if_indextoname(ifi->ifi_index, namebuf) &&
957 linux_iface_up(drv->global->ioctl_sock,
958 drv->first_bss->ifname) == 0) {
959 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
960 "event since interface %s is down",
961 namebuf);
962 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
963 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
964 "event since interface %s does not exist",
965 drv->first_bss->ifname);
966 } else if (drv->if_removed) {
967 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
968 "event since interface %s is marked "
969 "removed", drv->first_bss->ifname);
970 } else {
971 struct i802_bss *bss;
972 u8 addr[ETH_ALEN];
973
974 /* Re-read MAC address as it may have changed */
975 bss = get_bss_ifindex(drv, ifi->ifi_index);
976 if (bss &&
977 linux_get_ifhwaddr(drv->global->ioctl_sock,
978 bss->ifname, addr) < 0) {
979 wpa_printf(MSG_DEBUG,
980 "nl80211: %s: failed to re-read MAC address",
981 bss->ifname);
982 } else if (bss &&
983 os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
984 wpa_printf(MSG_DEBUG,
985 "nl80211: Own MAC address on ifindex %d (%s) changed from "
986 MACSTR " to " MACSTR,
987 ifi->ifi_index, bss->ifname,
988 MAC2STR(bss->addr),
989 MAC2STR(addr));
990 os_memcpy(bss->addr, addr, ETH_ALEN);
991 }
992
993 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
994 drv->if_disabled = 0;
995 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
996 NULL);
997 }
998 }
999
1000 /*
1001 * Some drivers send the association event before the operup event--in
1002 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1003 * fails. This will hit us when wpa_supplicant does not need to do
1004 * IEEE 802.1X authentication
1005 */
1006 if (drv->operstate == 1 &&
1007 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1008 !(ifi->ifi_flags & IFF_RUNNING)) {
1009 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1010 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1011 -1, IF_OPER_UP);
1012 }
1013
1014 if (ifname[0])
1015 wpa_driver_nl80211_event_newlink(drv, ifname);
1016
1017 if (ifi->ifi_family == AF_BRIDGE && brid) {
1018 struct i802_bss *bss;
1019
1020 /* device has been added to bridge */
1021 if_indextoname(brid, namebuf);
1022 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1023 brid, namebuf);
1024 add_ifidx(drv, brid);
1025
1026 for (bss = drv->first_bss; bss; bss = bss->next) {
1027 if (os_strcmp(ifname, bss->ifname) == 0) {
1028 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1029 break;
1030 }
1031 }
1032 }
1033 }
1034
1035
1036 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1037 struct ifinfomsg *ifi,
1038 u8 *buf, size_t len)
1039 {
1040 struct nl80211_global *global = ctx;
1041 struct wpa_driver_nl80211_data *drv;
1042 int attrlen;
1043 struct rtattr *attr;
1044 u32 brid = 0;
1045 char ifname[IFNAMSIZ + 1];
1046 char extra[100], *pos, *end;
1047
1048 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1049 if (!drv) {
1050 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1051 ifi->ifi_index);
1052 return;
1053 }
1054
1055 extra[0] = '\0';
1056 pos = extra;
1057 end = pos + sizeof(extra);
1058 ifname[0] = '\0';
1059
1060 attrlen = len;
1061 attr = (struct rtattr *) buf;
1062 while (RTA_OK(attr, attrlen)) {
1063 switch (attr->rta_type) {
1064 case IFLA_IFNAME:
1065 if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1066 break;
1067 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1068 ifname[RTA_PAYLOAD(attr)] = '\0';
1069 break;
1070 case IFLA_MASTER:
1071 brid = nla_get_u32((struct nlattr *) attr);
1072 pos += os_snprintf(pos, end - pos, " master=%u", brid);
1073 break;
1074 case IFLA_OPERSTATE:
1075 pos += os_snprintf(pos, end - pos, " operstate=%u",
1076 nla_get_u32((struct nlattr *) attr));
1077 break;
1078 case IFLA_LINKMODE:
1079 pos += os_snprintf(pos, end - pos, " linkmode=%u",
1080 nla_get_u32((struct nlattr *) attr));
1081 break;
1082 }
1083 attr = RTA_NEXT(attr, attrlen);
1084 }
1085 extra[sizeof(extra) - 1] = '\0';
1086
1087 wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1088 ifi->ifi_index, ifname, extra, ifi->ifi_family,
1089 ifi->ifi_flags,
1090 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1091 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1092 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1093 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1094
1095 if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1096 wpa_driver_nl80211_event_dellink(drv, ifname);
1097
1098 if (ifi->ifi_family == AF_BRIDGE && brid) {
1099 /* device has been removed from bridge */
1100 char namebuf[IFNAMSIZ];
1101 if_indextoname(brid, namebuf);
1102 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1103 "%s", brid, namebuf);
1104 del_ifidx(drv, brid);
1105 }
1106 }
1107
1108
1109 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1110 {
1111 struct nl_msg *msg;
1112 int ret;
1113 struct nl80211_bss_info_arg arg;
1114
1115 os_memset(&arg, 0, sizeof(arg));
1116 msg = nlmsg_alloc();
1117 if (!msg)
1118 goto nla_put_failure;
1119
1120 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1121 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1122
1123 arg.drv = drv;
1124 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1125 msg = NULL;
1126 if (ret == 0) {
1127 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1128 arg.ibss_freq : arg.assoc_freq;
1129 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1130 "associated BSS from scan results: %u MHz", freq);
1131 if (freq)
1132 drv->assoc_freq = freq;
1133 return drv->assoc_freq;
1134 }
1135 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1136 "(%s)", ret, strerror(-ret));
1137 nla_put_failure:
1138 nlmsg_free(msg);
1139 return drv->assoc_freq;
1140 }
1141
1142
1143 static int get_link_signal(struct nl_msg *msg, void *arg)
1144 {
1145 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1146 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1147 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1148 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1149 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1150 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1151 };
1152 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1153 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1154 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1155 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1156 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1157 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1158 };
1159 struct wpa_signal_info *sig_change = arg;
1160
1161 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1162 genlmsg_attrlen(gnlh, 0), NULL);
1163 if (!tb[NL80211_ATTR_STA_INFO] ||
1164 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1165 tb[NL80211_ATTR_STA_INFO], policy))
1166 return NL_SKIP;
1167 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1168 return NL_SKIP;
1169
1170 sig_change->current_signal =
1171 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1172
1173 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1174 sig_change->avg_signal =
1175 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1176 else
1177 sig_change->avg_signal = 0;
1178
1179 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1180 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1181 sinfo[NL80211_STA_INFO_TX_BITRATE],
1182 rate_policy)) {
1183 sig_change->current_txrate = 0;
1184 } else {
1185 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1186 sig_change->current_txrate =
1187 nla_get_u16(rinfo[
1188 NL80211_RATE_INFO_BITRATE]) * 100;
1189 }
1190 }
1191 }
1192
1193 return NL_SKIP;
1194 }
1195
1196
1197 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1198 struct wpa_signal_info *sig)
1199 {
1200 struct nl_msg *msg;
1201
1202 sig->current_signal = -9999;
1203 sig->current_txrate = 0;
1204
1205 msg = nlmsg_alloc();
1206 if (!msg)
1207 return -ENOMEM;
1208
1209 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1210
1211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1212 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1213
1214 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1215 nla_put_failure:
1216 nlmsg_free(msg);
1217 return -ENOBUFS;
1218 }
1219
1220
1221 static int get_link_noise(struct nl_msg *msg, void *arg)
1222 {
1223 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1224 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1225 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1226 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1227 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1228 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1229 };
1230 struct wpa_signal_info *sig_change = arg;
1231
1232 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1233 genlmsg_attrlen(gnlh, 0), NULL);
1234
1235 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1236 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1237 return NL_SKIP;
1238 }
1239
1240 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1241 tb[NL80211_ATTR_SURVEY_INFO],
1242 survey_policy)) {
1243 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1244 "attributes!");
1245 return NL_SKIP;
1246 }
1247
1248 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1249 return NL_SKIP;
1250
1251 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1252 sig_change->frequency)
1253 return NL_SKIP;
1254
1255 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1256 return NL_SKIP;
1257
1258 sig_change->current_noise =
1259 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1260
1261 return NL_SKIP;
1262 }
1263
1264
1265 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1266 struct wpa_signal_info *sig_change)
1267 {
1268 struct nl_msg *msg;
1269
1270 sig_change->current_noise = 9999;
1271 sig_change->frequency = drv->assoc_freq;
1272
1273 msg = nlmsg_alloc();
1274 if (!msg)
1275 return -ENOMEM;
1276
1277 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1278
1279 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1280
1281 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1282 nla_put_failure:
1283 nlmsg_free(msg);
1284 return -ENOBUFS;
1285 }
1286
1287
1288 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1289 {
1290 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1291 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1292 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1293 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1294 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1295 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1296 };
1297 struct wpa_scan_results *scan_results = arg;
1298 struct wpa_scan_res *scan_res;
1299 size_t i;
1300
1301 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1302 genlmsg_attrlen(gnlh, 0), NULL);
1303
1304 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1305 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1306 return NL_SKIP;
1307 }
1308
1309 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1310 tb[NL80211_ATTR_SURVEY_INFO],
1311 survey_policy)) {
1312 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1313 "attributes");
1314 return NL_SKIP;
1315 }
1316
1317 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1318 return NL_SKIP;
1319
1320 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1321 return NL_SKIP;
1322
1323 for (i = 0; i < scan_results->num; ++i) {
1324 scan_res = scan_results->res[i];
1325 if (!scan_res)
1326 continue;
1327 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1328 scan_res->freq)
1329 continue;
1330 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1331 continue;
1332 scan_res->noise = (s8)
1333 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1334 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1335 }
1336
1337 return NL_SKIP;
1338 }
1339
1340
1341 static int nl80211_get_noise_for_scan_results(
1342 struct wpa_driver_nl80211_data *drv,
1343 struct wpa_scan_results *scan_res)
1344 {
1345 struct nl_msg *msg;
1346
1347 msg = nlmsg_alloc();
1348 if (!msg)
1349 return -ENOMEM;
1350
1351 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1352
1353 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1354
1355 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1356 scan_res);
1357 nla_put_failure:
1358 nlmsg_free(msg);
1359 return -ENOBUFS;
1360 }
1361
1362
1363 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1364 void *handle)
1365 {
1366 struct nl_cb *cb = eloop_ctx;
1367 int res;
1368
1369 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1370
1371 res = nl_recvmsgs(handle, cb);
1372 if (res < 0) {
1373 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1374 __func__, res);
1375 }
1376 }
1377
1378
1379 /**
1380 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1381 * @priv: driver_nl80211 private data
1382 * @alpha2_arg: country to which to switch to
1383 * Returns: 0 on success, -1 on failure
1384 *
1385 * This asks nl80211 to set the regulatory domain for given
1386 * country ISO / IEC alpha2.
1387 */
1388 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1389 {
1390 struct i802_bss *bss = priv;
1391 struct wpa_driver_nl80211_data *drv = bss->drv;
1392 char alpha2[3];
1393 struct nl_msg *msg;
1394
1395 msg = nlmsg_alloc();
1396 if (!msg)
1397 return -ENOMEM;
1398
1399 alpha2[0] = alpha2_arg[0];
1400 alpha2[1] = alpha2_arg[1];
1401 alpha2[2] = '\0';
1402
1403 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1404
1405 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1406 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1407 return -EINVAL;
1408 return 0;
1409 nla_put_failure:
1410 nlmsg_free(msg);
1411 return -EINVAL;
1412 }
1413
1414
1415 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1416 {
1417 char *alpha2 = arg;
1418 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1419 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1420
1421 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1422 genlmsg_attrlen(gnlh, 0), NULL);
1423 if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1424 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1425 return NL_SKIP;
1426 }
1427 os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1428 return NL_SKIP;
1429 }
1430
1431
1432 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1433 {
1434 struct i802_bss *bss = priv;
1435 struct wpa_driver_nl80211_data *drv = bss->drv;
1436 struct nl_msg *msg;
1437 int ret;
1438
1439 msg = nlmsg_alloc();
1440 if (!msg)
1441 return -ENOMEM;
1442
1443 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1444 alpha2[0] = '\0';
1445 ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1446 if (!alpha2[0])
1447 ret = -1;
1448
1449 return ret;
1450 }
1451
1452
1453 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1454 {
1455 int ret;
1456
1457 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1458 if (global->nl_cb == NULL) {
1459 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1460 "callbacks");
1461 return -1;
1462 }
1463
1464 global->nl = nl_create_handle(global->nl_cb, "nl");
1465 if (global->nl == NULL)
1466 goto err;
1467
1468 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1469 if (global->nl80211_id < 0) {
1470 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1471 "found");
1472 goto err;
1473 }
1474
1475 global->nl_event = nl_create_handle(global->nl_cb, "event");
1476 if (global->nl_event == NULL)
1477 goto err;
1478
1479 ret = nl_get_multicast_id(global, "nl80211", "scan");
1480 if (ret >= 0)
1481 ret = nl_socket_add_membership(global->nl_event, ret);
1482 if (ret < 0) {
1483 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1484 "membership for scan events: %d (%s)",
1485 ret, strerror(-ret));
1486 goto err;
1487 }
1488
1489 ret = nl_get_multicast_id(global, "nl80211", "mlme");
1490 if (ret >= 0)
1491 ret = nl_socket_add_membership(global->nl_event, ret);
1492 if (ret < 0) {
1493 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1494 "membership for mlme events: %d (%s)",
1495 ret, strerror(-ret));
1496 goto err;
1497 }
1498
1499 ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1500 if (ret >= 0)
1501 ret = nl_socket_add_membership(global->nl_event, ret);
1502 if (ret < 0) {
1503 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1504 "membership for regulatory events: %d (%s)",
1505 ret, strerror(-ret));
1506 /* Continue without regulatory events */
1507 }
1508
1509 ret = nl_get_multicast_id(global, "nl80211", "vendor");
1510 if (ret >= 0)
1511 ret = nl_socket_add_membership(global->nl_event, ret);
1512 if (ret < 0) {
1513 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1514 "membership for vendor events: %d (%s)",
1515 ret, strerror(-ret));
1516 /* Continue without vendor events */
1517 }
1518
1519 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1520 no_seq_check, NULL);
1521 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1522 process_global_event, global);
1523
1524 nl80211_register_eloop_read(&global->nl_event,
1525 wpa_driver_nl80211_event_receive,
1526 global->nl_cb);
1527
1528 return 0;
1529
1530 err:
1531 nl_destroy_handles(&global->nl_event);
1532 nl_destroy_handles(&global->nl);
1533 nl_cb_put(global->nl_cb);
1534 global->nl_cb = NULL;
1535 return -1;
1536 }
1537
1538
1539 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1540 {
1541 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1542 if (!drv->nl_cb) {
1543 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1544 return -1;
1545 }
1546
1547 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1548 no_seq_check, NULL);
1549 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1550 process_drv_event, drv);
1551
1552 return 0;
1553 }
1554
1555
1556 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1557 {
1558 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1559 /*
1560 * This may be for any interface; use ifdown event to disable
1561 * interface.
1562 */
1563 }
1564
1565
1566 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1567 {
1568 struct wpa_driver_nl80211_data *drv = ctx;
1569 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1570 if (i802_set_iface_flags(drv->first_bss, 1)) {
1571 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1572 "after rfkill unblock");
1573 return;
1574 }
1575 /* rtnetlink ifup handler will report interface as enabled */
1576 }
1577
1578
1579 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1580 void *eloop_ctx,
1581 void *handle)
1582 {
1583 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1584 u8 data[2048];
1585 struct msghdr msg;
1586 struct iovec entry;
1587 u8 control[512];
1588 struct cmsghdr *cmsg;
1589 int res, found_ee = 0, found_wifi = 0, acked = 0;
1590 union wpa_event_data event;
1591
1592 memset(&msg, 0, sizeof(msg));
1593 msg.msg_iov = &entry;
1594 msg.msg_iovlen = 1;
1595 entry.iov_base = data;
1596 entry.iov_len = sizeof(data);
1597 msg.msg_control = &control;
1598 msg.msg_controllen = sizeof(control);
1599
1600 res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1601 /* if error or not fitting 802.3 header, return */
1602 if (res < 14)
1603 return;
1604
1605 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1606 {
1607 if (cmsg->cmsg_level == SOL_SOCKET &&
1608 cmsg->cmsg_type == SCM_WIFI_STATUS) {
1609 int *ack;
1610
1611 found_wifi = 1;
1612 ack = (void *)CMSG_DATA(cmsg);
1613 acked = *ack;
1614 }
1615
1616 if (cmsg->cmsg_level == SOL_PACKET &&
1617 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1618 struct sock_extended_err *err =
1619 (struct sock_extended_err *)CMSG_DATA(cmsg);
1620
1621 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1622 found_ee = 1;
1623 }
1624 }
1625
1626 if (!found_ee || !found_wifi)
1627 return;
1628
1629 memset(&event, 0, sizeof(event));
1630 event.eapol_tx_status.dst = data;
1631 event.eapol_tx_status.data = data + 14;
1632 event.eapol_tx_status.data_len = res - 14;
1633 event.eapol_tx_status.ack = acked;
1634 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1635 }
1636
1637
1638 static int nl80211_init_bss(struct i802_bss *bss)
1639 {
1640 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1641 if (!bss->nl_cb)
1642 return -1;
1643
1644 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1645 no_seq_check, NULL);
1646 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1647 process_bss_event, bss);
1648
1649 return 0;
1650 }
1651
1652
1653 static void nl80211_destroy_bss(struct i802_bss *bss)
1654 {
1655 nl_cb_put(bss->nl_cb);
1656 bss->nl_cb = NULL;
1657 }
1658
1659
1660 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1661 void *global_priv, int hostapd,
1662 const u8 *set_addr)
1663 {
1664 struct wpa_driver_nl80211_data *drv;
1665 struct rfkill_config *rcfg;
1666 struct i802_bss *bss;
1667
1668 if (global_priv == NULL)
1669 return NULL;
1670 drv = os_zalloc(sizeof(*drv));
1671 if (drv == NULL)
1672 return NULL;
1673 drv->global = global_priv;
1674 drv->ctx = ctx;
1675 drv->hostapd = !!hostapd;
1676 drv->eapol_sock = -1;
1677 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1678 drv->if_indices = drv->default_if_indices;
1679
1680 drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1681 if (!drv->first_bss) {
1682 os_free(drv);
1683 return NULL;
1684 }
1685 bss = drv->first_bss;
1686 bss->drv = drv;
1687 bss->ctx = ctx;
1688
1689 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1690 drv->monitor_ifidx = -1;
1691 drv->monitor_sock = -1;
1692 drv->eapol_tx_sock = -1;
1693 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1694
1695 if (wpa_driver_nl80211_init_nl(drv)) {
1696 os_free(drv);
1697 return NULL;
1698 }
1699
1700 if (nl80211_init_bss(bss))
1701 goto failed;
1702
1703 rcfg = os_zalloc(sizeof(*rcfg));
1704 if (rcfg == NULL)
1705 goto failed;
1706 rcfg->ctx = drv;
1707 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1708 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1709 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1710 drv->rfkill = rfkill_init(rcfg);
1711 if (drv->rfkill == NULL) {
1712 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1713 os_free(rcfg);
1714 }
1715
1716 if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1717 drv->start_iface_up = 1;
1718
1719 if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1))
1720 goto failed;
1721
1722 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1723 if (drv->eapol_tx_sock < 0)
1724 goto failed;
1725
1726 if (drv->data_tx_status) {
1727 int enabled = 1;
1728
1729 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1730 &enabled, sizeof(enabled)) < 0) {
1731 wpa_printf(MSG_DEBUG,
1732 "nl80211: wifi status sockopt failed\n");
1733 drv->data_tx_status = 0;
1734 if (!drv->use_monitor)
1735 drv->capa.flags &=
1736 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1737 } else {
1738 eloop_register_read_sock(drv->eapol_tx_sock,
1739 wpa_driver_nl80211_handle_eapol_tx_status,
1740 drv, NULL);
1741 }
1742 }
1743
1744 if (drv->global) {
1745 dl_list_add(&drv->global->interfaces, &drv->list);
1746 drv->in_interface_list = 1;
1747 }
1748
1749 return bss;
1750
1751 failed:
1752 wpa_driver_nl80211_deinit(bss);
1753 return NULL;
1754 }
1755
1756
1757 /**
1758 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1759 * @ctx: context to be used when calling wpa_supplicant functions,
1760 * e.g., wpa_supplicant_event()
1761 * @ifname: interface name, e.g., wlan0
1762 * @global_priv: private driver global data from global_init()
1763 * Returns: Pointer to private data, %NULL on failure
1764 */
1765 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1766 void *global_priv)
1767 {
1768 return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL);
1769 }
1770
1771
1772 static int nl80211_register_frame(struct i802_bss *bss,
1773 struct nl_handle *nl_handle,
1774 u16 type, const u8 *match, size_t match_len)
1775 {
1776 struct wpa_driver_nl80211_data *drv = bss->drv;
1777 struct nl_msg *msg;
1778 int ret = -1;
1779 char buf[30];
1780
1781 msg = nlmsg_alloc();
1782 if (!msg)
1783 return -1;
1784
1785 buf[0] = '\0';
1786 wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1787 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1788 type, fc2str(type), nl_handle, buf);
1789
1790 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
1791
1792 if (nl80211_set_iface_id(msg, bss) < 0)
1793 goto nla_put_failure;
1794
1795 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1796 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1797
1798 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1799 msg = NULL;
1800 if (ret) {
1801 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1802 "failed (type=%u): ret=%d (%s)",
1803 type, ret, strerror(-ret));
1804 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1805 match, match_len);
1806 goto nla_put_failure;
1807 }
1808 ret = 0;
1809 nla_put_failure:
1810 nlmsg_free(msg);
1811 return ret;
1812 }
1813
1814
1815 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1816 {
1817 struct wpa_driver_nl80211_data *drv = bss->drv;
1818
1819 if (bss->nl_mgmt) {
1820 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1821 "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1822 return -1;
1823 }
1824
1825 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1826 if (bss->nl_mgmt == NULL)
1827 return -1;
1828
1829 return 0;
1830 }
1831
1832
1833 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1834 {
1835 nl80211_register_eloop_read(&bss->nl_mgmt,
1836 wpa_driver_nl80211_event_receive,
1837 bss->nl_cb);
1838 }
1839
1840
1841 static int nl80211_register_action_frame(struct i802_bss *bss,
1842 const u8 *match, size_t match_len)
1843 {
1844 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1845 return nl80211_register_frame(bss, bss->nl_mgmt,
1846 type, match, match_len);
1847 }
1848
1849
1850 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1851 {
1852 struct wpa_driver_nl80211_data *drv = bss->drv;
1853 int ret = 0;
1854
1855 if (nl80211_alloc_mgmt_handle(bss))
1856 return -1;
1857 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1858 "handle %p", bss->nl_mgmt);
1859
1860 if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1861 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1862
1863 /* register for any AUTH message */
1864 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1865 }
1866
1867 #ifdef CONFIG_INTERWORKING
1868 /* QoS Map Configure */
1869 if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1870 ret = -1;
1871 #endif /* CONFIG_INTERWORKING */
1872 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1873 /* GAS Initial Request */
1874 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1875 ret = -1;
1876 /* GAS Initial Response */
1877 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1878 ret = -1;
1879 /* GAS Comeback Request */
1880 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1881 ret = -1;
1882 /* GAS Comeback Response */
1883 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1884 ret = -1;
1885 /* Protected GAS Initial Request */
1886 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1887 ret = -1;
1888 /* Protected GAS Initial Response */
1889 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1890 ret = -1;
1891 /* Protected GAS Comeback Request */
1892 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1893 ret = -1;
1894 /* Protected GAS Comeback Response */
1895 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1896 ret = -1;
1897 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1898 #ifdef CONFIG_P2P
1899 /* P2P Public Action */
1900 if (nl80211_register_action_frame(bss,
1901 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1902 6) < 0)
1903 ret = -1;
1904 /* P2P Action */
1905 if (nl80211_register_action_frame(bss,
1906 (u8 *) "\x7f\x50\x6f\x9a\x09",
1907 5) < 0)
1908 ret = -1;
1909 #endif /* CONFIG_P2P */
1910 #ifdef CONFIG_IEEE80211W
1911 /* SA Query Response */
1912 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1913 ret = -1;
1914 #endif /* CONFIG_IEEE80211W */
1915 #ifdef CONFIG_TDLS
1916 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1917 /* TDLS Discovery Response */
1918 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1919 0)
1920 ret = -1;
1921 }
1922 #endif /* CONFIG_TDLS */
1923
1924 /* FT Action frames */
1925 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1926 ret = -1;
1927 else
1928 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1929 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1930
1931 /* WNM - BSS Transition Management Request */
1932 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1933 ret = -1;
1934 /* WNM-Sleep Mode Response */
1935 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1936 ret = -1;
1937
1938 #ifdef CONFIG_HS20
1939 /* WNM-Notification */
1940 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1941 ret = -1;
1942 #endif /* CONFIG_HS20 */
1943
1944 /* WMM-AC ADDTS Response */
1945 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1946 return -1;
1947
1948 /* WMM-AC DELTS */
1949 if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1950 return -1;
1951
1952 /* Radio Measurement - Neighbor Report Response */
1953 if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1954 ret = -1;
1955
1956 /* Radio Measurement - Link Measurement Request */
1957 if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1958 (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1959 ret = -1;
1960
1961 nl80211_mgmt_handle_register_eloop(bss);
1962
1963 return ret;
1964 }
1965
1966
1967 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1968 {
1969 int ret = 0;
1970
1971 if (nl80211_alloc_mgmt_handle(bss))
1972 return -1;
1973
1974 wpa_printf(MSG_DEBUG,
1975 "nl80211: Subscribe to mgmt frames with mesh handle %p",
1976 bss->nl_mgmt);
1977
1978 /* Auth frames for mesh SAE */
1979 if (nl80211_register_frame(bss, bss->nl_mgmt,
1980 (WLAN_FC_TYPE_MGMT << 2) |
1981 (WLAN_FC_STYPE_AUTH << 4),
1982 NULL, 0) < 0)
1983 ret = -1;
1984
1985 /* Mesh peering open */
1986 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1987 ret = -1;
1988 /* Mesh peering confirm */
1989 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1990 ret = -1;
1991 /* Mesh peering close */
1992 if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1993 ret = -1;
1994
1995 nl80211_mgmt_handle_register_eloop(bss);
1996
1997 return ret;
1998 }
1999
2000
2001 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2002 {
2003 struct wpa_driver_nl80211_data *drv = bss->drv;
2004 struct nl_msg *msg;
2005 int ret = -1;
2006
2007 msg = nlmsg_alloc();
2008 if (!msg)
2009 return -1;
2010
2011 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
2012
2013 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
2014
2015 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
2016 msg = NULL;
2017 if (ret) {
2018 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2019 "failed: ret=%d (%s)",
2020 ret, strerror(-ret));
2021 goto nla_put_failure;
2022 }
2023 ret = 0;
2024 nla_put_failure:
2025 nlmsg_free(msg);
2026 return ret;
2027 }
2028
2029
2030 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2031 {
2032 static const int stypes[] = {
2033 WLAN_FC_STYPE_AUTH,
2034 WLAN_FC_STYPE_ASSOC_REQ,
2035 WLAN_FC_STYPE_REASSOC_REQ,
2036 WLAN_FC_STYPE_DISASSOC,
2037 WLAN_FC_STYPE_DEAUTH,
2038 WLAN_FC_STYPE_ACTION,
2039 WLAN_FC_STYPE_PROBE_REQ,
2040 /* Beacon doesn't work as mac80211 doesn't currently allow
2041 * it, but it wouldn't really be the right thing anyway as
2042 * it isn't per interface ... maybe just dump the scan
2043 * results periodically for OLBC?
2044 */
2045 /* WLAN_FC_STYPE_BEACON, */
2046 };
2047 unsigned int i;
2048
2049 if (nl80211_alloc_mgmt_handle(bss))
2050 return -1;
2051 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2052 "handle %p", bss->nl_mgmt);
2053
2054 for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2055 if (nl80211_register_frame(bss, bss->nl_mgmt,
2056 (WLAN_FC_TYPE_MGMT << 2) |
2057 (stypes[i] << 4),
2058 NULL, 0) < 0) {
2059 goto out_err;
2060 }
2061 }
2062
2063 if (nl80211_register_spurious_class3(bss))
2064 goto out_err;
2065
2066 if (nl80211_get_wiphy_data_ap(bss) == NULL)
2067 goto out_err;
2068
2069 nl80211_mgmt_handle_register_eloop(bss);
2070 return 0;
2071
2072 out_err:
2073 nl_destroy_handles(&bss->nl_mgmt);
2074 return -1;
2075 }
2076
2077
2078 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2079 {
2080 if (nl80211_alloc_mgmt_handle(bss))
2081 return -1;
2082 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2083 "handle %p (device SME)", bss->nl_mgmt);
2084
2085 if (nl80211_register_frame(bss, bss->nl_mgmt,
2086 (WLAN_FC_TYPE_MGMT << 2) |
2087 (WLAN_FC_STYPE_ACTION << 4),
2088 NULL, 0) < 0)
2089 goto out_err;
2090
2091 nl80211_mgmt_handle_register_eloop(bss);
2092 return 0;
2093
2094 out_err:
2095 nl_destroy_handles(&bss->nl_mgmt);
2096 return -1;
2097 }
2098
2099
2100 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2101 {
2102 if (bss->nl_mgmt == NULL)
2103 return;
2104 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2105 "(%s)", bss->nl_mgmt, reason);
2106 nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2107
2108 nl80211_put_wiphy_data_ap(bss);
2109 }
2110
2111
2112 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2113 {
2114 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2115 }
2116
2117
2118 static void nl80211_del_p2pdev(struct i802_bss *bss)
2119 {
2120 struct wpa_driver_nl80211_data *drv = bss->drv;
2121 struct nl_msg *msg;
2122 int ret;
2123
2124 msg = nlmsg_alloc();
2125 if (!msg)
2126 return;
2127
2128 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
2129 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2130
2131 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2132 msg = NULL;
2133
2134 wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2135 bss->ifname, (long long unsigned int) bss->wdev_id,
2136 strerror(-ret));
2137
2138 nla_put_failure:
2139 nlmsg_free(msg);
2140 }
2141
2142
2143 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2144 {
2145 struct wpa_driver_nl80211_data *drv = bss->drv;
2146 struct nl_msg *msg;
2147 int ret = -1;
2148
2149 msg = nlmsg_alloc();
2150 if (!msg)
2151 return -1;
2152
2153 if (start)
2154 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE);
2155 else
2156 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE);
2157
2158 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2159
2160 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2161 msg = NULL;
2162
2163 wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2164 start ? "Start" : "Stop",
2165 bss->ifname, (long long unsigned int) bss->wdev_id,
2166 strerror(-ret));
2167
2168 nla_put_failure:
2169 nlmsg_free(msg);
2170 return ret;
2171 }
2172
2173
2174 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2175 {
2176 enum nl80211_iftype nlmode;
2177
2178 nlmode = nl80211_get_ifmode(bss);
2179 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2180 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2181 bss->ifname, up);
2182 }
2183
2184 /* P2P Device has start/stop which is equivalent */
2185 return nl80211_set_p2pdev(bss, up);
2186 }
2187
2188
2189 static int
2190 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2191 const u8 *set_addr, int first)
2192 {
2193 struct i802_bss *bss = drv->first_bss;
2194 int send_rfkill_event = 0;
2195 enum nl80211_iftype nlmode;
2196
2197 drv->ifindex = if_nametoindex(bss->ifname);
2198 bss->ifindex = drv->ifindex;
2199 bss->wdev_id = drv->global->if_add_wdevid;
2200 bss->wdev_id_set = drv->global->if_add_wdevid_set;
2201
2202 bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2203 bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2204 drv->global->if_add_wdevid_set = 0;
2205
2206 if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2207 bss->static_ap = 1;
2208
2209 if (wpa_driver_nl80211_capa(drv))
2210 return -1;
2211
2212 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2213 bss->ifname, drv->phyname);
2214
2215 if (set_addr &&
2216 (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2217 linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2218 set_addr)))
2219 return -1;
2220
2221 if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2222 drv->start_mode_ap = 1;
2223
2224 if (drv->hostapd || bss->static_ap)
2225 nlmode = NL80211_IFTYPE_AP;
2226 else if (bss->if_dynamic)
2227 nlmode = nl80211_get_ifmode(bss);
2228 else
2229 nlmode = NL80211_IFTYPE_STATION;
2230
2231 if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2232 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2233 return -1;
2234 }
2235
2236 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2237 nl80211_get_macaddr(bss);
2238
2239 if (!rfkill_is_blocked(drv->rfkill)) {
2240 int ret = i802_set_iface_flags(bss, 1);
2241 if (ret) {
2242 wpa_printf(MSG_ERROR, "nl80211: Could not set "
2243 "interface '%s' UP", bss->ifname);
2244 return ret;
2245 }
2246 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2247 return ret;
2248 } else {
2249 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2250 "interface '%s' due to rfkill", bss->ifname);
2251 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2252 return 0;
2253 drv->if_disabled = 1;
2254 send_rfkill_event = 1;
2255 }
2256
2257 if (!drv->hostapd)
2258 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2259 1, IF_OPER_DORMANT);
2260
2261 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2262 bss->addr))
2263 return -1;
2264 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2265
2266 if (send_rfkill_event) {
2267 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2268 drv, drv->ctx);
2269 }
2270
2271 return 0;
2272 }
2273
2274
2275 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2276 {
2277 struct nl_msg *msg;
2278
2279 msg = nlmsg_alloc();
2280 if (!msg)
2281 return -ENOMEM;
2282
2283 wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2284 drv->ifindex);
2285 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2286 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2287
2288 return send_and_recv_msgs(drv, msg, NULL, NULL);
2289 nla_put_failure:
2290 nlmsg_free(msg);
2291 return -ENOBUFS;
2292 }
2293
2294
2295 /**
2296 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2297 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2298 *
2299 * Shut down driver interface and processing of driver events. Free
2300 * private data buffer if one was allocated in wpa_driver_nl80211_init().
2301 */
2302 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2303 {
2304 struct wpa_driver_nl80211_data *drv = bss->drv;
2305
2306 bss->in_deinit = 1;
2307 if (drv->data_tx_status)
2308 eloop_unregister_read_sock(drv->eapol_tx_sock);
2309 if (drv->eapol_tx_sock >= 0)
2310 close(drv->eapol_tx_sock);
2311
2312 if (bss->nl_preq)
2313 wpa_driver_nl80211_probe_req_report(bss, 0);
2314 if (bss->added_if_into_bridge) {
2315 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2316 bss->ifname) < 0)
2317 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2318 "interface %s from bridge %s: %s",
2319 bss->ifname, bss->brname, strerror(errno));
2320 if (drv->rtnl_sk)
2321 nl80211_handle_destroy(drv->rtnl_sk);
2322 }
2323 if (bss->added_bridge) {
2324 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2325 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2326 "bridge %s: %s",
2327 bss->brname, strerror(errno));
2328 }
2329
2330 nl80211_remove_monitor_interface(drv);
2331
2332 if (is_ap_interface(drv->nlmode))
2333 wpa_driver_nl80211_del_beacon(drv);
2334
2335 if (drv->eapol_sock >= 0) {
2336 eloop_unregister_read_sock(drv->eapol_sock);
2337 close(drv->eapol_sock);
2338 }
2339
2340 if (drv->if_indices != drv->default_if_indices)
2341 os_free(drv->if_indices);
2342
2343 if (drv->disabled_11b_rates)
2344 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2345
2346 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2347 IF_OPER_UP);
2348 eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2349 rfkill_deinit(drv->rfkill);
2350
2351 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2352
2353 if (!drv->start_iface_up)
2354 (void) i802_set_iface_flags(bss, 0);
2355
2356 if (drv->addr_changed) {
2357 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2358 0) < 0) {
2359 wpa_printf(MSG_DEBUG,
2360 "nl80211: Could not set interface down to restore permanent MAC address");
2361 }
2362 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2363 drv->perm_addr) < 0) {
2364 wpa_printf(MSG_DEBUG,
2365 "nl80211: Could not restore permanent MAC address");
2366 }
2367 }
2368
2369 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2370 if (!drv->hostapd || !drv->start_mode_ap)
2371 wpa_driver_nl80211_set_mode(bss,
2372 NL80211_IFTYPE_STATION);
2373 nl80211_mgmt_unsubscribe(bss, "deinit");
2374 } else {
2375 nl80211_mgmt_unsubscribe(bss, "deinit");
2376 nl80211_del_p2pdev(bss);
2377 }
2378 nl_cb_put(drv->nl_cb);
2379
2380 nl80211_destroy_bss(drv->first_bss);
2381
2382 os_free(drv->filter_ssids);
2383
2384 os_free(drv->auth_ie);
2385
2386 if (drv->in_interface_list)
2387 dl_list_del(&drv->list);
2388
2389 os_free(drv->extended_capa);
2390 os_free(drv->extended_capa_mask);
2391 os_free(drv->first_bss);
2392 os_free(drv);
2393 }
2394
2395
2396 /**
2397 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2398 * @eloop_ctx: Driver private data
2399 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2400 *
2401 * This function can be used as registered timeout when starting a scan to
2402 * generate a scan completed event if the driver does not report this.
2403 */
2404 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2405 {
2406 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2407 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2408 wpa_driver_nl80211_set_mode(drv->first_bss,
2409 drv->ap_scan_as_station);
2410 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2411 }
2412 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2413 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2414 }
2415
2416
2417 static struct nl_msg *
2418 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2419 struct wpa_driver_scan_params *params, u64 *wdev_id)
2420 {
2421 struct nl_msg *msg;
2422 size_t i;
2423 u32 scan_flags = 0;
2424
2425 msg = nlmsg_alloc();
2426 if (!msg)
2427 return NULL;
2428
2429 nl80211_cmd(drv, msg, 0, cmd);
2430
2431 if (!wdev_id)
2432 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2433 else
2434 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
2435
2436 if (params->num_ssids) {
2437 struct nlattr *ssids;
2438
2439 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2440 if (ssids == NULL)
2441 goto fail;
2442 for (i = 0; i < params->num_ssids; i++) {
2443 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2444 params->ssids[i].ssid,
2445 params->ssids[i].ssid_len);
2446 if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2447 params->ssids[i].ssid) < 0)
2448 goto fail;
2449 }
2450 nla_nest_end(msg, ssids);
2451 }
2452
2453 if (params->extra_ies) {
2454 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2455 params->extra_ies, params->extra_ies_len);
2456 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2457 params->extra_ies) < 0)
2458 goto fail;
2459 }
2460
2461 if (params->freqs) {
2462 struct nlattr *freqs;
2463 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2464 if (freqs == NULL)
2465 goto fail;
2466 for (i = 0; params->freqs[i]; i++) {
2467 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2468 "MHz", params->freqs[i]);
2469 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
2470 goto fail;
2471 }
2472 nla_nest_end(msg, freqs);
2473 }
2474
2475 os_free(drv->filter_ssids);
2476 drv->filter_ssids = params->filter_ssids;
2477 params->filter_ssids = NULL;
2478 drv->num_filter_ssids = params->num_filter_ssids;
2479
2480 if (params->only_new_results) {
2481 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2482 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2483 }
2484
2485 if (params->low_priority && drv->have_low_prio_scan) {
2486 wpa_printf(MSG_DEBUG,
2487 "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2488 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2489 }
2490
2491 if (scan_flags)
2492 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags);
2493
2494 return msg;
2495
2496 fail:
2497 nla_put_failure:
2498 nlmsg_free(msg);
2499 return NULL;
2500 }
2501
2502
2503 /**
2504 * wpa_driver_nl80211_scan - Request the driver to initiate scan
2505 * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2506 * @params: Scan parameters
2507 * Returns: 0 on success, -1 on failure
2508 */
2509 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2510 struct wpa_driver_scan_params *params)
2511 {
2512 struct wpa_driver_nl80211_data *drv = bss->drv;
2513 int ret = -1, timeout;
2514 struct nl_msg *msg = NULL;
2515
2516 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2517 drv->scan_for_auth = 0;
2518
2519 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2520 bss->wdev_id_set ? &bss->wdev_id : NULL);
2521 if (!msg)
2522 return -1;
2523
2524 if (params->p2p_probe) {
2525 struct nlattr *rates;
2526
2527 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2528
2529 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2530 if (rates == NULL)
2531 goto nla_put_failure;
2532
2533 /*
2534 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2535 * by masking out everything else apart from the OFDM rates 6,
2536 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2537 * rates are left enabled.
2538 */
2539 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
2540 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2541 nla_nest_end(msg, rates);
2542
2543 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2544 }
2545
2546 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2547 msg = NULL;
2548 if (ret) {
2549 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2550 "(%s)", ret, strerror(-ret));
2551 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2552 enum nl80211_iftype old_mode = drv->nlmode;
2553
2554 /*
2555 * mac80211 does not allow scan requests in AP mode, so
2556 * try to do this in station mode.
2557 */
2558 if (wpa_driver_nl80211_set_mode(
2559 bss, NL80211_IFTYPE_STATION))
2560 goto nla_put_failure;
2561
2562 if (wpa_driver_nl80211_scan(bss, params)) {
2563 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2564 goto nla_put_failure;
2565 }
2566
2567 /* Restore AP mode when processing scan results */
2568 drv->ap_scan_as_station = old_mode;
2569 ret = 0;
2570 } else
2571 goto nla_put_failure;
2572 }
2573
2574 drv->scan_state = SCAN_REQUESTED;
2575 /* Not all drivers generate "scan completed" wireless event, so try to
2576 * read results after a timeout. */
2577 timeout = 10;
2578 if (drv->scan_complete_events) {
2579 /*
2580 * The driver seems to deliver events to notify when scan is
2581 * complete, so use longer timeout to avoid race conditions
2582 * with scanning and following association request.
2583 */
2584 timeout = 30;
2585 }
2586 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2587 "seconds", ret, timeout);
2588 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2589 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2590 drv, drv->ctx);
2591
2592 nla_put_failure:
2593 nlmsg_free(msg);
2594 return ret;
2595 }
2596
2597
2598 /**
2599 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2600 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2601 * @params: Scan parameters
2602 * @interval: Interval between scan cycles in milliseconds
2603 * Returns: 0 on success, -1 on failure or if not supported
2604 */
2605 static int wpa_driver_nl80211_sched_scan(void *priv,
2606 struct wpa_driver_scan_params *params,
2607 u32 interval)
2608 {
2609 struct i802_bss *bss = priv;
2610 struct wpa_driver_nl80211_data *drv = bss->drv;
2611 int ret = -1;
2612 struct nl_msg *msg;
2613 size_t i;
2614
2615 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2616
2617 #ifdef ANDROID
2618 if (!drv->capa.sched_scan_supported)
2619 return android_pno_start(bss, params);
2620 #endif /* ANDROID */
2621
2622 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2623 bss->wdev_id_set ? &bss->wdev_id : NULL);
2624 if (!msg)
2625 goto nla_put_failure;
2626
2627 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2628
2629 if ((drv->num_filter_ssids &&
2630 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2631 params->filter_rssi) {
2632 struct nlattr *match_sets;
2633 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2634 if (match_sets == NULL)
2635 goto nla_put_failure;
2636
2637 for (i = 0; i < drv->num_filter_ssids; i++) {
2638 struct nlattr *match_set_ssid;
2639 wpa_hexdump_ascii(MSG_MSGDUMP,
2640 "nl80211: Sched scan filter SSID",
2641 drv->filter_ssids[i].ssid,
2642 drv->filter_ssids[i].ssid_len);
2643
2644 match_set_ssid = nla_nest_start(msg, i + 1);
2645 if (match_set_ssid == NULL)
2646 goto nla_put_failure;
2647 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2648 drv->filter_ssids[i].ssid_len,
2649 drv->filter_ssids[i].ssid);
2650 if (params->filter_rssi)
2651 NLA_PUT_U32(msg,
2652 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2653 params->filter_rssi);
2654
2655 nla_nest_end(msg, match_set_ssid);
2656 }
2657
2658 /*
2659 * Due to backward compatibility code, newer kernels treat this
2660 * matchset (with only an RSSI filter) as the default for all
2661 * other matchsets, unless it's the only one, in which case the
2662 * matchset will actually allow all SSIDs above the RSSI.
2663 */
2664 if (params->filter_rssi) {
2665 struct nlattr *match_set_rssi;
2666 match_set_rssi = nla_nest_start(msg, 0);
2667 if (match_set_rssi == NULL)
2668 goto nla_put_failure;
2669 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2670 params->filter_rssi);
2671 wpa_printf(MSG_MSGDUMP,
2672 "nl80211: Sched scan RSSI filter %d dBm",
2673 params->filter_rssi);
2674 nla_nest_end(msg, match_set_rssi);
2675 }
2676
2677 nla_nest_end(msg, match_sets);
2678 }
2679
2680 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2681
2682 /* TODO: if we get an error here, we should fall back to normal scan */
2683
2684 msg = NULL;
2685 if (ret) {
2686 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2687 "ret=%d (%s)", ret, strerror(-ret));
2688 goto nla_put_failure;
2689 }
2690
2691 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2692 "scan interval %d msec", ret, interval);
2693
2694 nla_put_failure:
2695 nlmsg_free(msg);
2696 return ret;
2697 }
2698
2699
2700 /**
2701 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2702 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2703 * Returns: 0 on success, -1 on failure or if not supported
2704 */
2705 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2706 {
2707 struct i802_bss *bss = priv;
2708 struct wpa_driver_nl80211_data *drv = bss->drv;
2709 int ret = 0;
2710 struct nl_msg *msg;
2711
2712 #ifdef ANDROID
2713 if (!drv->capa.sched_scan_supported)
2714 return android_pno_stop(bss);
2715 #endif /* ANDROID */
2716
2717 msg = nlmsg_alloc();
2718 if (!msg)
2719 return -1;
2720
2721 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2722
2723 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2724
2725 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2726 msg = NULL;
2727 if (ret) {
2728 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2729 "ret=%d (%s)", ret, strerror(-ret));
2730 goto nla_put_failure;
2731 }
2732
2733 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2734
2735 nla_put_failure:
2736 nlmsg_free(msg);
2737 return ret;
2738 }
2739
2740
2741 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2742 {
2743 const u8 *end, *pos;
2744
2745 if (ies == NULL)
2746 return NULL;
2747
2748 pos = ies;
2749 end = ies + ies_len;
2750
2751 while (pos + 1 < end) {
2752 if (pos + 2 + pos[1] > end)
2753 break;
2754 if (pos[0] == ie)
2755 return pos;
2756 pos += 2 + pos[1];
2757 }
2758
2759 return NULL;
2760 }
2761
2762
2763 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2764 const u8 *ie, size_t ie_len)
2765 {
2766 const u8 *ssid;
2767 size_t i;
2768
2769 if (drv->filter_ssids == NULL)
2770 return 0;
2771
2772 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2773 if (ssid == NULL)
2774 return 1;
2775
2776 for (i = 0; i < drv->num_filter_ssids; i++) {
2777 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2778 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2779 0)
2780 return 0;
2781 }
2782
2783 return 1;
2784 }
2785
2786
2787 static int bss_info_handler(struct nl_msg *msg, void *arg)
2788 {
2789 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2790 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2791 struct nlattr *bss[NL80211_BSS_MAX + 1];
2792 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2793 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2794 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2795 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2796 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2797 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2798 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2799 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2800 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2801 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2802 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2803 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2804 };
2805 struct nl80211_bss_info_arg *_arg = arg;
2806 struct wpa_scan_results *res = _arg->res;
2807 struct wpa_scan_res **tmp;
2808 struct wpa_scan_res *r;
2809 const u8 *ie, *beacon_ie;
2810 size_t ie_len, beacon_ie_len;
2811 u8 *pos;
2812 size_t i;
2813
2814 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2815 genlmsg_attrlen(gnlh, 0), NULL);
2816 if (!tb[NL80211_ATTR_BSS])
2817 return NL_SKIP;
2818 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2819 bss_policy))
2820 return NL_SKIP;
2821 if (bss[NL80211_BSS_STATUS]) {
2822 enum nl80211_bss_status status;
2823 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2824 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2825 bss[NL80211_BSS_FREQUENCY]) {
2826 _arg->assoc_freq =
2827 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2828 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2829 _arg->assoc_freq);
2830 }
2831 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2832 bss[NL80211_BSS_FREQUENCY]) {
2833 _arg->ibss_freq =
2834 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2835 wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2836 _arg->ibss_freq);
2837 }
2838 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2839 bss[NL80211_BSS_BSSID]) {
2840 os_memcpy(_arg->assoc_bssid,
2841 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2842 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2843 MACSTR, MAC2STR(_arg->assoc_bssid));
2844 }
2845 }
2846 if (!res)
2847 return NL_SKIP;
2848 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2849 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2850 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2851 } else {
2852 ie = NULL;
2853 ie_len = 0;
2854 }
2855 if (bss[NL80211_BSS_BEACON_IES]) {
2856 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2857 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2858 } else {
2859 beacon_ie = NULL;
2860 beacon_ie_len = 0;
2861 }
2862
2863 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2864 ie ? ie_len : beacon_ie_len))
2865 return NL_SKIP;
2866
2867 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2868 if (r == NULL)
2869 return NL_SKIP;
2870 if (bss[NL80211_BSS_BSSID])
2871 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2872 ETH_ALEN);
2873 if (bss[NL80211_BSS_FREQUENCY])
2874 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2875 if (bss[NL80211_BSS_BEACON_INTERVAL])
2876 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2877 if (bss[NL80211_BSS_CAPABILITY])
2878 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2879 r->flags |= WPA_SCAN_NOISE_INVALID;
2880 if (bss[NL80211_BSS_SIGNAL_MBM]) {
2881 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2882 r->level /= 100; /* mBm to dBm */
2883 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2884 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2885 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2886 r->flags |= WPA_SCAN_QUAL_INVALID;
2887 } else
2888 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2889 if (bss[NL80211_BSS_TSF])
2890 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2891 if (bss[NL80211_BSS_SEEN_MS_AGO])
2892 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2893 r->ie_len = ie_len;
2894 pos = (u8 *) (r + 1);
2895 if (ie) {
2896 os_memcpy(pos, ie, ie_len);
2897 pos += ie_len;
2898 }
2899 r->beacon_ie_len = beacon_ie_len;
2900 if (beacon_ie)
2901 os_memcpy(pos, beacon_ie, beacon_ie_len);
2902
2903 if (bss[NL80211_BSS_STATUS]) {
2904 enum nl80211_bss_status status;
2905 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2906 switch (status) {
2907 case NL80211_BSS_STATUS_AUTHENTICATED:
2908 r->flags |= WPA_SCAN_AUTHENTICATED;
2909 break;
2910 case NL80211_BSS_STATUS_ASSOCIATED:
2911 r->flags |= WPA_SCAN_ASSOCIATED;
2912 break;
2913 default:
2914 break;
2915 }
2916 }
2917
2918 /*
2919 * cfg80211 maintains separate BSS table entries for APs if the same
2920 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2921 * not use frequency as a separate key in the BSS table, so filter out
2922 * duplicated entries. Prefer associated BSS entry in such a case in
2923 * order to get the correct frequency into the BSS table. Similarly,
2924 * prefer newer entries over older.
2925 */
2926 for (i = 0; i < res->num; i++) {
2927 const u8 *s1, *s2;
2928 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2929 continue;
2930
2931 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2932 res->res[i]->ie_len, WLAN_EID_SSID);
2933 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2934 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2935 os_memcmp(s1, s2, 2 + s1[1]) != 0)
2936 continue;
2937
2938 /* Same BSSID,SSID was already included in scan results */
2939 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2940 "for " MACSTR, MAC2STR(r->bssid));
2941
2942 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2943 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2944 r->age < res->res[i]->age) {
2945 os_free(res->res[i]);
2946 res->res[i] = r;
2947 } else
2948 os_free(r);
2949 return NL_SKIP;
2950 }
2951
2952 tmp = os_realloc_array(res->res, res->num + 1,
2953 sizeof(struct wpa_scan_res *));
2954 if (tmp == NULL) {
2955 os_free(r);
2956 return NL_SKIP;
2957 }
2958 tmp[res->num++] = r;
2959 res->res = tmp;
2960
2961 return NL_SKIP;
2962 }
2963
2964
2965 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2966 const u8 *addr)
2967 {
2968 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2969 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2970 "mismatch (" MACSTR ")", MAC2STR(addr));
2971 wpa_driver_nl80211_mlme(drv, addr,
2972 NL80211_CMD_DEAUTHENTICATE,
2973 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2974 }
2975 }
2976
2977
2978 static void wpa_driver_nl80211_check_bss_status(
2979 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2980 {
2981 size_t i;
2982
2983 for (i = 0; i < res->num; i++) {
2984 struct wpa_scan_res *r = res->res[i];
2985 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2986 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2987 "indicates BSS status with " MACSTR
2988 " as authenticated",
2989 MAC2STR(r->bssid));
2990 if (is_sta_interface(drv->nlmode) &&
2991 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2992 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2993 0) {
2994 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2995 " in local state (auth=" MACSTR
2996 " assoc=" MACSTR ")",
2997 MAC2STR(drv->auth_bssid),
2998 MAC2STR(drv->bssid));
2999 clear_state_mismatch(drv, r->bssid);
3000 }
3001 }
3002
3003 if (r->flags & WPA_SCAN_ASSOCIATED) {
3004 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3005 "indicate BSS status with " MACSTR
3006 " as associated",
3007 MAC2STR(r->bssid));
3008 if (is_sta_interface(drv->nlmode) &&
3009 !drv->associated) {
3010 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3011 "(not associated) does not match "
3012 "with BSS state");
3013 clear_state_mismatch(drv, r->bssid);
3014 } else if (is_sta_interface(drv->nlmode) &&
3015 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3016 0) {
3017 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3018 "(associated with " MACSTR ") does "
3019 "not match with BSS state",
3020 MAC2STR(drv->bssid));
3021 clear_state_mismatch(drv, r->bssid);
3022 clear_state_mismatch(drv, drv->bssid);
3023 }
3024 }
3025 }
3026 }
3027
3028
3029 static struct wpa_scan_results *
3030 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3031 {
3032 struct nl_msg *msg;
3033 struct wpa_scan_results *res;
3034 int ret;
3035 struct nl80211_bss_info_arg arg;
3036
3037 res = os_zalloc(sizeof(*res));
3038 if (res == NULL)
3039 return NULL;
3040 msg = nlmsg_alloc();
3041 if (!msg)
3042 goto nla_put_failure;
3043
3044 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3045 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
3046 goto nla_put_failure;
3047
3048 arg.drv = drv;
3049 arg.res = res;
3050 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3051 msg = NULL;
3052 if (ret == 0) {
3053 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3054 "BSSes)", (unsigned long) res->num);
3055 nl80211_get_noise_for_scan_results(drv, res);
3056 return res;
3057 }
3058 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3059 "(%s)", ret, strerror(-ret));
3060 nla_put_failure:
3061 nlmsg_free(msg);
3062 wpa_scan_results_free(res);
3063 return NULL;
3064 }
3065
3066
3067 /**
3068 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3069 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3070 * Returns: Scan results on success, -1 on failure
3071 */
3072 static struct wpa_scan_results *
3073 wpa_driver_nl80211_get_scan_results(void *priv)
3074 {
3075 struct i802_bss *bss = priv;
3076 struct wpa_driver_nl80211_data *drv = bss->drv;
3077 struct wpa_scan_results *res;
3078
3079 res = nl80211_get_scan_results(drv);
3080 if (res)
3081 wpa_driver_nl80211_check_bss_status(drv, res);
3082 return res;
3083 }
3084
3085
3086 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3087 {
3088 struct wpa_scan_results *res;
3089 size_t i;
3090
3091 res = nl80211_get_scan_results(drv);
3092 if (res == NULL) {
3093 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3094 return;
3095 }
3096
3097 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3098 for (i = 0; i < res->num; i++) {
3099 struct wpa_scan_res *r = res->res[i];
3100 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3101 (int) i, (int) res->num, MAC2STR(r->bssid),
3102 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3103 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3104 }
3105
3106 wpa_scan_results_free(res);
3107 }
3108
3109
3110 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3111 {
3112 switch (alg) {
3113 case WPA_ALG_WEP:
3114 if (key_len == 5)
3115 return WLAN_CIPHER_SUITE_WEP40;
3116 return WLAN_CIPHER_SUITE_WEP104;
3117 case WPA_ALG_TKIP:
3118 return WLAN_CIPHER_SUITE_TKIP;
3119 case WPA_ALG_CCMP:
3120 return WLAN_CIPHER_SUITE_CCMP;
3121 case WPA_ALG_GCMP:
3122 return WLAN_CIPHER_SUITE_GCMP;
3123 case WPA_ALG_CCMP_256:
3124 return WLAN_CIPHER_SUITE_CCMP_256;
3125 case WPA_ALG_GCMP_256:
3126 return WLAN_CIPHER_SUITE_GCMP_256;
3127 case WPA_ALG_IGTK:
3128 return WLAN_CIPHER_SUITE_AES_CMAC;
3129 case WPA_ALG_BIP_GMAC_128:
3130 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3131 case WPA_ALG_BIP_GMAC_256:
3132 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3133 case WPA_ALG_BIP_CMAC_256:
3134 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3135 case WPA_ALG_SMS4:
3136 return WLAN_CIPHER_SUITE_SMS4;
3137 case WPA_ALG_KRK:
3138 return WLAN_CIPHER_SUITE_KRK;
3139 case WPA_ALG_NONE:
3140 case WPA_ALG_PMK:
3141 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3142 alg);
3143 return 0;
3144 }
3145
3146 wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3147 alg);
3148 return 0;
3149 }
3150
3151
3152 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3153 {
3154 switch (cipher) {
3155 case WPA_CIPHER_CCMP_256:
3156 return WLAN_CIPHER_SUITE_CCMP_256;
3157 case WPA_CIPHER_GCMP_256:
3158 return WLAN_CIPHER_SUITE_GCMP_256;
3159 case WPA_CIPHER_CCMP:
3160 return WLAN_CIPHER_SUITE_CCMP;
3161 case WPA_CIPHER_GCMP:
3162 return WLAN_CIPHER_SUITE_GCMP;
3163 case WPA_CIPHER_TKIP:
3164 return WLAN_CIPHER_SUITE_TKIP;
3165 case WPA_CIPHER_WEP104:
3166 return WLAN_CIPHER_SUITE_WEP104;
3167 case WPA_CIPHER_WEP40:
3168 return WLAN_CIPHER_SUITE_WEP40;
3169 case WPA_CIPHER_GTK_NOT_USED:
3170 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3171 }
3172
3173 return 0;
3174 }
3175
3176
3177 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3178 int max_suites)
3179 {
3180 int num_suites = 0;
3181
3182 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3183 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3184 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3185 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3186 if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3187 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3188 if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3189 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3190 if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3191 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3192 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3193 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3194 if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3195 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3196
3197 return num_suites;
3198 }
3199
3200
3201 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3202 const u8 *key, size_t key_len)
3203 {
3204 struct nl_msg *msg;
3205 int ret = 0;
3206
3207 if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3208 return 0;
3209
3210 msg = nlmsg_alloc();
3211 if (!msg)
3212 return -1;
3213
3214 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
3215 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3216 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
3217 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3218 QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY);
3219 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, key_len, key);
3220 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3221 msg = NULL;
3222 if (ret) {
3223 wpa_printf(MSG_DEBUG,
3224 "nl80211: Key management set key failed: ret=%d (%s)",
3225 ret, strerror(-ret));
3226 }
3227
3228 nla_put_failure:
3229 nlmsg_free(msg);
3230 return ret;
3231 }
3232
3233
3234 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3235 enum wpa_alg alg, const u8 *addr,
3236 int key_idx, int set_tx,
3237 const u8 *seq, size_t seq_len,
3238 const u8 *key, size_t key_len)
3239 {
3240 struct wpa_driver_nl80211_data *drv = bss->drv;
3241 int ifindex;
3242 struct nl_msg *msg;
3243 int ret;
3244 int tdls = 0;
3245
3246 /* Ignore for P2P Device */
3247 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3248 return 0;
3249
3250 ifindex = if_nametoindex(ifname);
3251 wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3252 "set_tx=%d seq_len=%lu key_len=%lu",
3253 __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3254 (unsigned long) seq_len, (unsigned long) key_len);
3255 #ifdef CONFIG_TDLS
3256 if (key_idx == -1) {
3257 key_idx = 0;
3258 tdls = 1;
3259 }
3260 #endif /* CONFIG_TDLS */
3261
3262 if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3263 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3264 __func__);
3265 ret = issue_key_mgmt_set_key(drv, key, key_len);
3266 return ret;
3267 }
3268
3269 msg = nlmsg_alloc();
3270 if (!msg)
3271 return -ENOMEM;
3272
3273 if (alg == WPA_ALG_NONE) {
3274 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3275 } else {
3276 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3277 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3278 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3279 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3280 wpa_alg_to_cipher_suite(alg, key_len));
3281 }
3282
3283 if (seq && seq_len) {
3284 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3285 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3286 }
3287
3288 if (addr && !is_broadcast_ether_addr(addr)) {
3289 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
3290 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3291
3292 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3293 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
3294 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3295 NL80211_KEYTYPE_GROUP);
3296 }
3297 } else if (addr && is_broadcast_ether_addr(addr)) {
3298 struct nlattr *types;
3299
3300 wpa_printf(MSG_DEBUG, " broadcast key");
3301
3302 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3303 if (!types)
3304 goto nla_put_failure;
3305 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3306 nla_nest_end(msg, types);
3307 }
3308 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3309 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3310
3311 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3312 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3313 ret = 0;
3314 if (ret)
3315 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3316 ret, strerror(-ret));
3317
3318 /*
3319 * If we failed or don't need to set the default TX key (below),
3320 * we're done here.
3321 */
3322 if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3323 return ret;
3324 if (is_ap_interface(drv->nlmode) && addr &&
3325 !is_broadcast_ether_addr(addr))
3326 return ret;
3327
3328 msg = nlmsg_alloc();
3329 if (!msg)
3330 return -ENOMEM;
3331
3332 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3333 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3334 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3335 if (alg == WPA_ALG_IGTK)
3336 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3337 else
3338 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3339 if (addr && is_broadcast_ether_addr(addr)) {
3340 struct nlattr *types;
3341
3342 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3343 if (!types)
3344 goto nla_put_failure;
3345 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3346 nla_nest_end(msg, types);
3347 } else if (addr) {
3348 struct nlattr *types;
3349
3350 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3351 if (!types)
3352 goto nla_put_failure;
3353 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3354 nla_nest_end(msg, types);
3355 }
3356
3357 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3358 if (ret == -ENOENT)
3359 ret = 0;
3360 if (ret)
3361 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3362 "err=%d %s)", ret, strerror(-ret));
3363 return ret;
3364
3365 nla_put_failure:
3366 nlmsg_free(msg);
3367 return -ENOBUFS;
3368 }
3369
3370
3371 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3372 int key_idx, int defkey,
3373 const u8 *seq, size_t seq_len,
3374 const u8 *key, size_t key_len)
3375 {
3376 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3377 if (!key_attr)
3378 return -1;
3379
3380 if (defkey && alg == WPA_ALG_IGTK)
3381 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3382 else if (defkey)
3383 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3384
3385 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3386
3387 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3388 wpa_alg_to_cipher_suite(alg, key_len));
3389
3390 if (seq && seq_len)
3391 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3392
3393 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3394
3395 nla_nest_end(msg, key_attr);
3396
3397 return 0;
3398 nla_put_failure:
3399 return -1;
3400 }
3401
3402
3403 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3404 struct nl_msg *msg)
3405 {
3406 int i, privacy = 0;
3407 struct nlattr *nl_keys, *nl_key;
3408
3409 for (i = 0; i < 4; i++) {
3410 if (!params->wep_key[i])
3411 continue;
3412 privacy = 1;
3413 break;
3414 }
3415 if (params->wps == WPS_MODE_PRIVACY)
3416 privacy = 1;
3417 if (params->pairwise_suite &&
3418 params->pairwise_suite != WPA_CIPHER_NONE)
3419 privacy = 1;
3420
3421 if (!privacy)
3422 return 0;
3423
3424 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3425
3426 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3427 if (!nl_keys)
3428 goto nla_put_failure;
3429
3430 for (i = 0; i < 4; i++) {
3431 if (!params->wep_key[i])
3432 continue;
3433
3434 nl_key = nla_nest_start(msg, i);
3435 if (!nl_key)
3436 goto nla_put_failure;
3437
3438 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3439 params->wep_key[i]);
3440 if (params->wep_key_len[i] == 5)
3441 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3442 WLAN_CIPHER_SUITE_WEP40);
3443 else
3444 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3445 WLAN_CIPHER_SUITE_WEP104);
3446
3447 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3448
3449 if (i == params->wep_tx_keyidx)
3450 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3451
3452 nla_nest_end(msg, nl_key);
3453 }
3454 nla_nest_end(msg, nl_keys);
3455
3456 return 0;
3457
3458 nla_put_failure:
3459 return -ENOBUFS;
3460 }
3461
3462
3463 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3464 const u8 *addr, int cmd, u16 reason_code,
3465 int local_state_change)
3466 {
3467 int ret = -1;
3468 struct nl_msg *msg;
3469
3470 msg = nlmsg_alloc();
3471 if (!msg)
3472 return -1;
3473
3474 nl80211_cmd(drv, msg, 0, cmd);
3475
3476 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3477 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3478 if (addr)
3479 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3480 if (local_state_change)
3481 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3482
3483 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3484 msg = NULL;
3485 if (ret) {
3486 wpa_dbg(drv->ctx, MSG_DEBUG,
3487 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3488 reason_code, ret, strerror(-ret));
3489 goto nla_put_failure;
3490 }
3491 ret = 0;
3492
3493 nla_put_failure:
3494 nlmsg_free(msg);
3495 return ret;
3496 }
3497
3498
3499 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3500 int reason_code)
3501 {
3502 int ret;
3503
3504 wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3505 nl80211_mark_disconnected(drv);
3506 /* Disconnect command doesn't need BSSID - it uses cached value */
3507 ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3508 reason_code, 0);
3509 /*
3510 * For locally generated disconnect, supplicant already generates a
3511 * DEAUTH event, so ignore the event from NL80211.
3512 */
3513 drv->ignore_next_local_disconnect = ret == 0;
3514
3515 return ret;
3516 }
3517
3518
3519 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3520 const u8 *addr, int reason_code)
3521 {
3522 struct wpa_driver_nl80211_data *drv = bss->drv;
3523 int ret;
3524
3525 if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3526 nl80211_mark_disconnected(drv);
3527 return nl80211_leave_ibss(drv);
3528 }
3529 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3530 return wpa_driver_nl80211_disconnect(drv, reason_code);
3531 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3532 __func__, MAC2STR(addr), reason_code);
3533 nl80211_mark_disconnected(drv);
3534 ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3535 reason_code, 0);
3536 /*
3537 * For locally generated deauthenticate, supplicant already generates a
3538 * DEAUTH event, so ignore the event from NL80211.
3539 */
3540 drv->ignore_next_local_deauth = ret == 0;
3541 return ret;
3542 }
3543
3544
3545 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3546 struct wpa_driver_auth_params *params)
3547 {
3548 int i;
3549
3550 drv->auth_freq = params->freq;
3551 drv->auth_alg = params->auth_alg;
3552 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3553 drv->auth_local_state_change = params->local_state_change;
3554 drv->auth_p2p = params->p2p;
3555
3556 if (params->bssid)
3557 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3558 else
3559 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3560
3561 if (params->ssid) {
3562 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3563 drv->auth_ssid_len = params->ssid_len;
3564 } else
3565 drv->auth_ssid_len = 0;
3566
3567
3568 os_free(drv->auth_ie);
3569 drv->auth_ie = NULL;
3570 drv->auth_ie_len = 0;
3571 if (params->ie) {
3572 drv->auth_ie = os_malloc(params->ie_len);
3573 if (drv->auth_ie) {
3574 os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3575 drv->auth_ie_len = params->ie_len;
3576 }
3577 }
3578
3579 for (i = 0; i < 4; i++) {
3580 if (params->wep_key[i] && params->wep_key_len[i] &&
3581 params->wep_key_len[i] <= 16) {
3582 os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3583 params->wep_key_len[i]);
3584 drv->auth_wep_key_len[i] = params->wep_key_len[i];
3585 } else
3586 drv->auth_wep_key_len[i] = 0;
3587 }
3588 }
3589
3590
3591 static int wpa_driver_nl80211_authenticate(
3592 struct i802_bss *bss, struct wpa_driver_auth_params *params)
3593 {
3594 struct wpa_driver_nl80211_data *drv = bss->drv;
3595 int ret = -1, i;
3596 struct nl_msg *msg;
3597 enum nl80211_auth_type type;
3598 enum nl80211_iftype nlmode;
3599 int count = 0;
3600 int is_retry;
3601
3602 is_retry = drv->retry_auth;
3603 drv->retry_auth = 0;
3604 drv->ignore_deauth_event = 0;
3605
3606 nl80211_mark_disconnected(drv);
3607 os_memset(drv->auth_bssid, 0, ETH_ALEN);
3608 if (params->bssid)
3609 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3610 else
3611 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3612 /* FIX: IBSS mode */
3613 nlmode = params->p2p ?
3614 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3615 if (drv->nlmode != nlmode &&
3616 wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3617 return -1;
3618
3619 retry:
3620 msg = nlmsg_alloc();
3621 if (!msg)
3622 return -1;
3623
3624 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3625 drv->ifindex);
3626
3627 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3628
3629 for (i = 0; i < 4; i++) {
3630 if (!params->wep_key[i])
3631 continue;
3632 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3633 NULL, i,
3634 i == params->wep_tx_keyidx, NULL, 0,
3635 params->wep_key[i],
3636 params->wep_key_len[i]);
3637 if (params->wep_tx_keyidx != i)
3638 continue;
3639 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3640 params->wep_key[i], params->wep_key_len[i])) {
3641 nlmsg_free(msg);
3642 return -1;
3643 }
3644 }
3645
3646 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3647 if (params->bssid) {
3648 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3649 MAC2STR(params->bssid));
3650 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3651 }
3652 if (params->freq) {
3653 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3654 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3655 }
3656 if (params->ssid) {
3657 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3658 params->ssid, params->ssid_len);
3659 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3660 params->ssid);
3661 }
3662 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
3663 if (params->ie)
3664 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3665 if (params->sae_data) {
3666 wpa_hexdump(MSG_DEBUG, " * SAE data", params->sae_data,
3667 params->sae_data_len);
3668 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3669 params->sae_data);
3670 }
3671 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3672 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3673 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3674 type = NL80211_AUTHTYPE_SHARED_KEY;
3675 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3676 type = NL80211_AUTHTYPE_NETWORK_EAP;
3677 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3678 type = NL80211_AUTHTYPE_FT;
3679 else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3680 type = NL80211_AUTHTYPE_SAE;
3681 else
3682 goto nla_put_failure;
3683 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3684 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3685 if (params->local_state_change) {
3686 wpa_printf(MSG_DEBUG, " * Local state change only");
3687 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3688 }
3689
3690 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3691 msg = NULL;
3692 if (ret) {
3693 wpa_dbg(drv->ctx, MSG_DEBUG,
3694 "nl80211: MLME command failed (auth): ret=%d (%s)",
3695 ret, strerror(-ret));
3696 count++;
3697 if (ret == -EALREADY && count == 1 && params->bssid &&
3698 !params->local_state_change) {
3699 /*
3700 * mac80211 does not currently accept new
3701 * authentication if we are already authenticated. As a
3702 * workaround, force deauthentication and try again.
3703 */
3704 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3705 "after forced deauthentication");
3706 drv->ignore_deauth_event = 1;
3707 wpa_driver_nl80211_deauthenticate(
3708 bss, params->bssid,
3709 WLAN_REASON_PREV_AUTH_NOT_VALID);
3710 nlmsg_free(msg);
3711 goto retry;
3712 }
3713
3714 if (ret == -ENOENT && params->freq && !is_retry) {
3715 /*
3716 * cfg80211 has likely expired the BSS entry even
3717 * though it was previously available in our internal
3718 * BSS table. To recover quickly, start a single
3719 * channel scan on the specified channel.
3720 */
3721 struct wpa_driver_scan_params scan;
3722 int freqs[2];
3723
3724 os_memset(&scan, 0, sizeof(scan));
3725 scan.num_ssids = 1;
3726 if (params->ssid) {
3727 scan.ssids[0].ssid = params->ssid;
3728 scan.ssids[0].ssid_len = params->ssid_len;
3729 }
3730 freqs[0] = params->freq;
3731 freqs[1] = 0;
3732 scan.freqs = freqs;
3733 wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3734 "channel scan to refresh cfg80211 BSS "
3735 "entry");
3736 ret = wpa_driver_nl80211_scan(bss, &scan);
3737 if (ret == 0) {
3738 nl80211_copy_auth_params(drv, params);
3739 drv->scan_for_auth = 1;
3740 }
3741 } else if (is_retry) {
3742 /*
3743 * Need to indicate this with an event since the return
3744 * value from the retry is not delivered to core code.
3745 */
3746 union wpa_event_data event;
3747 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3748 "failed");
3749 os_memset(&event, 0, sizeof(event));
3750 os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3751 ETH_ALEN);
3752 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3753 &event);
3754 }
3755
3756 goto nla_put_failure;
3757 }
3758 ret = 0;
3759 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3760 "successfully");
3761
3762 nla_put_failure:
3763 nlmsg_free(msg);
3764 return ret;
3765 }
3766
3767
3768 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3769 {
3770 struct wpa_driver_auth_params params;
3771 struct i802_bss *bss = drv->first_bss;
3772 int i;
3773
3774 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3775
3776 os_memset(&params, 0, sizeof(params));
3777 params.freq = drv->auth_freq;
3778 params.auth_alg = drv->auth_alg;
3779 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3780 params.local_state_change = drv->auth_local_state_change;
3781 params.p2p = drv->auth_p2p;
3782
3783 if (!is_zero_ether_addr(drv->auth_bssid_))
3784 params.bssid = drv->auth_bssid_;
3785
3786 if (drv->auth_ssid_len) {
3787 params.ssid = drv->auth_ssid;
3788 params.ssid_len = drv->auth_ssid_len;
3789 }
3790
3791 params.ie = drv->auth_ie;
3792 params.ie_len = drv->auth_ie_len;
3793
3794 for (i = 0; i < 4; i++) {
3795 if (drv->auth_wep_key_len[i]) {
3796 params.wep_key[i] = drv->auth_wep_key[i];
3797 params.wep_key_len[i] = drv->auth_wep_key_len[i];
3798 }
3799 }
3800
3801 drv->retry_auth = 1;
3802 return wpa_driver_nl80211_authenticate(bss, &params);
3803 }
3804
3805
3806 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3807 const void *data, size_t len,
3808 int encrypt, int noack,
3809 unsigned int freq, int no_cck,
3810 int offchanok, unsigned int wait_time)
3811 {
3812 struct wpa_driver_nl80211_data *drv = bss->drv;
3813 u64 cookie;
3814 int res;
3815
3816 if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3817 freq = nl80211_get_assoc_freq(drv);
3818 wpa_printf(MSG_DEBUG,
3819 "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3820 freq);
3821 }
3822 if (freq == 0) {
3823 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3824 bss->freq);
3825 freq = bss->freq;
3826 }
3827
3828 if (drv->use_monitor) {
3829 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3830 freq, bss->freq);
3831 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3832 }
3833
3834 wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3835 res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3836 &cookie, no_cck, noack, offchanok);
3837 if (res == 0 && !noack) {
3838 const struct ieee80211_mgmt *mgmt;
3839 u16 fc;
3840
3841 mgmt = (const struct ieee80211_mgmt *) data;
3842 fc = le_to_host16(mgmt->frame_control);
3843 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3844 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3845 wpa_printf(MSG_MSGDUMP,
3846 "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3847 (long long unsigned int)
3848 drv->send_action_cookie,
3849 (long long unsigned int) cookie);
3850 drv->send_action_cookie = cookie;
3851 }
3852 }
3853
3854 return res;
3855 }
3856
3857
3858 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3859 size_t data_len, int noack,
3860 unsigned int freq, int no_cck,
3861 int offchanok,
3862 unsigned int wait_time)
3863 {
3864 struct wpa_driver_nl80211_data *drv = bss->drv;
3865 struct ieee80211_mgmt *mgmt;
3866 int encrypt = 1;
3867 u16 fc;
3868
3869 mgmt = (struct ieee80211_mgmt *) data;
3870 fc = le_to_host16(mgmt->frame_control);
3871 wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3872 " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3873 MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3874 fc, fc2str(fc), drv->nlmode);
3875
3876 if ((is_sta_interface(drv->nlmode) ||
3877 drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3878 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3879 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3880 /*
3881 * The use of last_mgmt_freq is a bit of a hack,
3882 * but it works due to the single-threaded nature
3883 * of wpa_supplicant.
3884 */
3885 if (freq == 0) {
3886 wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3887 drv->last_mgmt_freq);
3888 freq = drv->last_mgmt_freq;
3889 }
3890 return nl80211_send_frame_cmd(bss, freq, 0,
3891 data, data_len, NULL, 1, noack,
3892 1);
3893 }
3894
3895 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3896 if (freq == 0) {
3897 wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3898 bss->freq);
3899 freq = bss->freq;
3900 }
3901 return nl80211_send_frame_cmd(bss, freq,
3902 (int) freq == bss->freq ? 0 :
3903 wait_time,
3904 data, data_len,
3905 &drv->send_action_cookie,
3906 no_cck, noack, offchanok);
3907 }
3908
3909 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3910 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3911 /*
3912 * Only one of the authentication frame types is encrypted.
3913 * In order for static WEP encryption to work properly (i.e.,
3914 * to not encrypt the frame), we need to tell mac80211 about
3915 * the frames that must not be encrypted.
3916 */
3917 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3918 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3919 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3920 encrypt = 0;
3921 }
3922
3923 wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3924 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3925 noack, freq, no_cck, offchanok,
3926 wait_time);
3927 }
3928
3929
3930 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3931 int slot, int ht_opmode, int ap_isolate,
3932 int *basic_rates)
3933 {
3934 struct wpa_driver_nl80211_data *drv = bss->drv;
3935 struct nl_msg *msg;
3936
3937 msg = nlmsg_alloc();
3938 if (!msg)
3939 return -ENOMEM;
3940
3941 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
3942
3943 if (cts >= 0)
3944 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3945 if (preamble >= 0)
3946 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3947 if (slot >= 0)
3948 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3949 if (ht_opmode >= 0)
3950 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
3951 if (ap_isolate >= 0)
3952 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
3953
3954 if (basic_rates) {
3955 u8 rates[NL80211_MAX_SUPP_RATES];
3956 u8 rates_len = 0;
3957 int i;
3958
3959 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3960 i++)
3961 rates[rates_len++] = basic_rates[i] / 5;
3962
3963 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3964 }
3965
3966 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3967
3968 return send_and_recv_msgs(drv, msg, NULL, NULL);
3969 nla_put_failure:
3970 nlmsg_free(msg);
3971 return -ENOBUFS;
3972 }
3973
3974
3975 static int wpa_driver_nl80211_set_acl(void *priv,
3976 struct hostapd_acl_params *params)
3977 {
3978 struct i802_bss *bss = priv;
3979 struct wpa_driver_nl80211_data *drv = bss->drv;
3980 struct nl_msg *msg;
3981 struct nlattr *acl;
3982 unsigned int i;
3983 int ret = 0;
3984
3985 if (!(drv->capa.max_acl_mac_addrs))
3986 return -ENOTSUP;
3987
3988 if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3989 return -ENOTSUP;
3990
3991 msg = nlmsg_alloc();
3992 if (!msg)
3993 return -ENOMEM;
3994
3995 wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3996 params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3997
3998 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
3999
4000 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4001
4002 NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
4003 NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
4004 NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
4005
4006 acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
4007 if (acl == NULL)
4008 goto nla_put_failure;
4009
4010 for (i = 0; i < params->num_mac_acl; i++)
4011 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
4012
4013 nla_nest_end(msg, acl);
4014
4015 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4016 msg = NULL;
4017 if (ret) {
4018 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
4019 ret, strerror(-ret));
4020 }
4021
4022 nla_put_failure:
4023 nlmsg_free(msg);
4024
4025 return ret;
4026 }
4027
4028
4029 static int wpa_driver_nl80211_set_ap(void *priv,
4030 struct wpa_driver_ap_params *params)
4031 {
4032 struct i802_bss *bss = priv;
4033 struct wpa_driver_nl80211_data *drv = bss->drv;
4034 struct nl_msg *msg;
4035 u8 cmd = NL80211_CMD_NEW_BEACON;
4036 int ret;
4037 int beacon_set;
4038 int ifindex = if_nametoindex(bss->ifname);
4039 int num_suites;
4040 int smps_mode;
4041 u32 suites[10], suite;
4042 u32 ver;
4043
4044 beacon_set = bss->beacon_set;
4045
4046 msg = nlmsg_alloc();
4047 if (!msg)
4048 return -ENOMEM;
4049
4050 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4051 beacon_set);
4052 if (beacon_set)
4053 cmd = NL80211_CMD_SET_BEACON;
4054
4055 nl80211_cmd(drv, msg, 0, cmd);
4056 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
4057 params->head, params->head_len);
4058 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4059 wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
4060 params->tail, params->tail_len);
4061 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4062 wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
4063 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4064 wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
4065 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4066 wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
4067 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4068 wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
4069 params->ssid, params->ssid_len);
4070 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4071 params->ssid);
4072 if (params->proberesp && params->proberesp_len) {
4073 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4074 params->proberesp, params->proberesp_len);
4075 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4076 params->proberesp);
4077 }
4078 switch (params->hide_ssid) {
4079 case NO_SSID_HIDING:
4080 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4081 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4082 NL80211_HIDDEN_SSID_NOT_IN_USE);
4083 break;
4084 case HIDDEN_SSID_ZERO_LEN:
4085 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4086 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4087 NL80211_HIDDEN_SSID_ZERO_LEN);
4088 break;
4089 case HIDDEN_SSID_ZERO_CONTENTS:
4090 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4091 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4092 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4093 break;
4094 }
4095 wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4096 if (params->privacy)
4097 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4098 wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4099 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4100 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4101 /* Leave out the attribute */
4102 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4103 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4104 NL80211_AUTHTYPE_SHARED_KEY);
4105 else
4106 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4107 NL80211_AUTHTYPE_OPEN_SYSTEM);
4108
4109 wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4110 ver = 0;
4111 if (params->wpa_version & WPA_PROTO_WPA)
4112 ver |= NL80211_WPA_VERSION_1;
4113 if (params->wpa_version & WPA_PROTO_RSN)
4114 ver |= NL80211_WPA_VERSION_2;
4115 if (ver)
4116 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4117
4118 wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4119 params->key_mgmt_suites);
4120 num_suites = 0;
4121 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4122 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4123 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4124 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4125 if (num_suites) {
4126 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4127 num_suites * sizeof(u32), suites);
4128 }
4129
4130 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4131 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
4132 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
4133
4134 wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4135 params->pairwise_ciphers);
4136 num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4137 suites, ARRAY_SIZE(suites));
4138 if (num_suites) {
4139 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4140 num_suites * sizeof(u32), suites);
4141 }
4142
4143 wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4144 params->group_cipher);
4145 suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4146 if (suite)
4147 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
4148
4149 switch (params->smps_mode) {
4150 case HT_CAP_INFO_SMPS_DYNAMIC:
4151 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4152 smps_mode = NL80211_SMPS_DYNAMIC;
4153 break;
4154 case HT_CAP_INFO_SMPS_STATIC:
4155 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4156 smps_mode = NL80211_SMPS_STATIC;
4157 break;
4158 default:
4159 /* invalid - fallback to smps off */
4160 case HT_CAP_INFO_SMPS_DISABLED:
4161 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4162 smps_mode = NL80211_SMPS_OFF;
4163 break;
4164 }
4165 NLA_PUT_U32(msg, NL80211_ATTR_SMPS_MODE, smps_mode);
4166
4167 if (params->beacon_ies) {
4168 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4169 params->beacon_ies);
4170 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4171 wpabuf_head(params->beacon_ies));
4172 }
4173 if (params->proberesp_ies) {
4174 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4175 params->proberesp_ies);
4176 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4177 wpabuf_len(params->proberesp_ies),
4178 wpabuf_head(params->proberesp_ies));
4179 }
4180 if (params->assocresp_ies) {
4181 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4182 params->assocresp_ies);
4183 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4184 wpabuf_len(params->assocresp_ies),
4185 wpabuf_head(params->assocresp_ies));
4186 }
4187
4188 if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER) {
4189 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4190 params->ap_max_inactivity);
4191 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4192 params->ap_max_inactivity);
4193 }
4194
4195 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4196 if (ret) {
4197 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4198 ret, strerror(-ret));
4199 } else {
4200 bss->beacon_set = 1;
4201 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4202 params->short_slot_time, params->ht_opmode,
4203 params->isolate, params->basic_rates);
4204 if (beacon_set && params->freq &&
4205 params->freq->bandwidth != bss->bandwidth) {
4206 wpa_printf(MSG_DEBUG,
4207 "nl80211: Update BSS %s bandwidth: %d -> %d",
4208 bss->ifname, bss->bandwidth,
4209 params->freq->bandwidth);
4210 ret = nl80211_set_channel(bss, params->freq, 1);
4211 if (ret) {
4212 wpa_printf(MSG_DEBUG,
4213 "nl80211: Frequency set failed: %d (%s)",
4214 ret, strerror(-ret));
4215 } else {
4216 wpa_printf(MSG_DEBUG,
4217 "nl80211: Frequency set succeeded for ht2040 coex");
4218 bss->bandwidth = params->freq->bandwidth;
4219 }
4220 } else if (!beacon_set) {
4221 /*
4222 * cfg80211 updates the driver on frequence change in AP
4223 * mode only at the point when beaconing is started, so
4224 * set the initial value here.
4225 */
4226 bss->bandwidth = params->freq->bandwidth;
4227 }
4228 }
4229 return ret;
4230 nla_put_failure:
4231 nlmsg_free(msg);
4232 return -ENOBUFS;
4233 }
4234
4235
4236 static int nl80211_put_freq_params(struct nl_msg *msg,
4237 struct hostapd_freq_params *freq)
4238 {
4239 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
4240 if (freq->vht_enabled) {
4241 switch (freq->bandwidth) {
4242 case 20:
4243 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4244 NL80211_CHAN_WIDTH_20);
4245 break;
4246 case 40:
4247 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4248 NL80211_CHAN_WIDTH_40);
4249 break;
4250 case 80:
4251 if (freq->center_freq2)
4252 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4253 NL80211_CHAN_WIDTH_80P80);
4254 else
4255 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4256 NL80211_CHAN_WIDTH_80);
4257 break;
4258 case 160:
4259 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4260 NL80211_CHAN_WIDTH_160);
4261 break;
4262 default:
4263 return -EINVAL;
4264 }
4265 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
4266 if (freq->center_freq2)
4267 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
4268 freq->center_freq2);
4269 } else if (freq->ht_enabled) {
4270 switch (freq->sec_channel_offset) {
4271 case -1:
4272 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4273 NL80211_CHAN_HT40MINUS);
4274 break;
4275 case 1:
4276 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4277 NL80211_CHAN_HT40PLUS);
4278 break;
4279 default:
4280 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4281 NL80211_CHAN_HT20);
4282 break;
4283 }
4284 }
4285 return 0;
4286
4287 nla_put_failure:
4288 return -ENOBUFS;
4289 }
4290
4291
4292 static int nl80211_set_channel(struct i802_bss *bss,
4293 struct hostapd_freq_params *freq, int set_chan)
4294 {
4295 struct wpa_driver_nl80211_data *drv = bss->drv;
4296 struct nl_msg *msg;
4297 int ret;
4298
4299 wpa_printf(MSG_DEBUG,
4300 "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4301 freq->freq, freq->ht_enabled, freq->vht_enabled,
4302 freq->bandwidth, freq->center_freq1, freq->center_freq2);
4303 msg = nlmsg_alloc();
4304 if (!msg)
4305 return -1;
4306
4307 nl80211_cmd(drv, msg, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4308 NL80211_CMD_SET_WIPHY);
4309
4310 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4311 if (nl80211_put_freq_params(msg, freq) < 0)
4312 goto nla_put_failure;
4313
4314 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4315 msg = NULL;
4316 if (ret == 0) {
4317 bss->freq = freq->freq;
4318 return 0;
4319 }
4320 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4321 "%d (%s)", freq->freq, ret, strerror(-ret));
4322 nla_put_failure:
4323 nlmsg_free(msg);
4324 return -1;
4325 }
4326
4327
4328 static u32 sta_flags_nl80211(int flags)
4329 {
4330 u32 f = 0;
4331
4332 if (flags & WPA_STA_AUTHORIZED)
4333 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4334 if (flags & WPA_STA_WMM)
4335 f |= BIT(NL80211_STA_FLAG_WME);
4336 if (flags & WPA_STA_SHORT_PREAMBLE)
4337 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4338 if (flags & WPA_STA_MFP)
4339 f |= BIT(NL80211_STA_FLAG_MFP);
4340 if (flags & WPA_STA_TDLS_PEER)
4341 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4342 if (flags & WPA_STA_AUTHENTICATED)
4343 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4344
4345 return f;
4346 }
4347
4348
4349 #ifdef CONFIG_MESH
4350 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4351 {
4352 switch (state) {
4353 case PLINK_LISTEN:
4354 return NL80211_PLINK_LISTEN;
4355 case PLINK_OPEN_SENT:
4356 return NL80211_PLINK_OPN_SNT;
4357 case PLINK_OPEN_RCVD:
4358 return NL80211_PLINK_OPN_RCVD;
4359 case PLINK_CNF_RCVD:
4360 return NL80211_PLINK_CNF_RCVD;
4361 case PLINK_ESTAB:
4362 return NL80211_PLINK_ESTAB;
4363 case PLINK_HOLDING:
4364 return NL80211_PLINK_HOLDING;
4365 case PLINK_BLOCKED:
4366 return NL80211_PLINK_BLOCKED;
4367 default:
4368 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4369 state);
4370 }
4371 return -1;
4372 }
4373 #endif /* CONFIG_MESH */
4374
4375
4376 static int wpa_driver_nl80211_sta_add(void *priv,
4377 struct hostapd_sta_add_params *params)
4378 {
4379 struct i802_bss *bss = priv;
4380 struct wpa_driver_nl80211_data *drv = bss->drv;
4381 struct nl_msg *msg;
4382 struct nl80211_sta_flag_update upd;
4383 int ret = -ENOBUFS;
4384
4385 if ((params->flags & WPA_STA_TDLS_PEER) &&
4386 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4387 return -EOPNOTSUPP;
4388
4389 msg = nlmsg_alloc();
4390 if (!msg)
4391 return -ENOMEM;
4392
4393 wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4394 params->set ? "Set" : "Add", MAC2STR(params->addr));
4395 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4396 NL80211_CMD_NEW_STATION);
4397
4398 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4399 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4400
4401 if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4402 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4403 params->supp_rates_len, params->supp_rates);
4404 wpa_hexdump(MSG_DEBUG, " * supported rates",
4405 params->supp_rates, params->supp_rates_len);
4406
4407 if (params->ht_capabilities) {
4408 wpa_hexdump(MSG_DEBUG, " * ht_capabilities",
4409 (u8 *) params->ht_capabilities,
4410 sizeof(*params->ht_capabilities));
4411 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4412 sizeof(*params->ht_capabilities),
4413 params->ht_capabilities);
4414 }
4415
4416 if (params->vht_capabilities) {
4417 wpa_hexdump(MSG_DEBUG, " * vht_capabilities",
4418 (u8 *) params->vht_capabilities,
4419 sizeof(*params->vht_capabilities));
4420 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
4421 sizeof(*params->vht_capabilities),
4422 params->vht_capabilities);
4423 }
4424
4425 wpa_printf(MSG_DEBUG, " * capability=0x%x",
4426 params->capability);
4427 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY,
4428 params->capability);
4429
4430 if (params->ext_capab) {
4431 wpa_hexdump(MSG_DEBUG, " * ext_capab",
4432 params->ext_capab, params->ext_capab_len);
4433 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4434 params->ext_capab_len, params->ext_capab);
4435 }
4436 }
4437 if (!params->set) {
4438 if (params->aid) {
4439 wpa_printf(MSG_DEBUG, " * aid=%u", params->aid);
4440 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4441 } else {
4442 /*
4443 * cfg80211 validates that AID is non-zero, so we have
4444 * to make this a non-zero value for the TDLS case where
4445 * a dummy STA entry is used for now.
4446 */
4447 wpa_printf(MSG_DEBUG, " * aid=1 (TDLS workaround)");
4448 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
4449 }
4450 wpa_printf(MSG_DEBUG, " * listen_interval=%u",
4451 params->listen_interval);
4452 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4453 params->listen_interval);
4454 } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4455 wpa_printf(MSG_DEBUG, " * peer_aid=%u", params->aid);
4456 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
4457 }
4458
4459 if (params->vht_opmode_enabled) {
4460 wpa_printf(MSG_DEBUG, " * opmode=%u", params->vht_opmode);
4461 NLA_PUT_U8(msg, NL80211_ATTR_OPMODE_NOTIF,
4462 params->vht_opmode);
4463 }
4464
4465 if (params->supp_channels) {
4466 wpa_hexdump(MSG_DEBUG, " * supported channels",
4467 params->supp_channels, params->supp_channels_len);
4468 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4469 params->supp_channels_len, params->supp_channels);
4470 }
4471
4472 if (params->supp_oper_classes) {
4473 wpa_hexdump(MSG_DEBUG, " * supported operating classes",
4474 params->supp_oper_classes,
4475 params->supp_oper_classes_len);
4476 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4477 params->supp_oper_classes_len,
4478 params->supp_oper_classes);
4479 }
4480
4481 os_memset(&upd, 0, sizeof(upd));
4482 upd.set = sta_flags_nl80211(params->flags);
4483 upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4484 wpa_printf(MSG_DEBUG, " * flags set=0x%x mask=0x%x",
4485 upd.set, upd.mask);
4486 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4487
4488 #ifdef CONFIG_MESH
4489 if (params->plink_state)
4490 NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_STATE,
4491 sta_plink_state_nl80211(params->plink_state));
4492 #endif /* CONFIG_MESH */
4493
4494 if (params->flags & WPA_STA_WMM) {
4495 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4496
4497 if (!wme)
4498 goto nla_put_failure;
4499
4500 wpa_printf(MSG_DEBUG, " * qosinfo=0x%x", params->qosinfo);
4501 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4502 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
4503 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
4504 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4505 WMM_QOSINFO_STA_SP_MASK);
4506 nla_nest_end(msg, wme);
4507 }
4508
4509 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4510 msg = NULL;
4511 if (ret)
4512 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4513 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4514 strerror(-ret));
4515 if (ret == -EEXIST)
4516 ret = 0;
4517 nla_put_failure:
4518 nlmsg_free(msg);
4519 return ret;
4520 }
4521
4522
4523 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4524 {
4525 #ifdef CONFIG_LIBNL3_ROUTE
4526 struct wpa_driver_nl80211_data *drv = bss->drv;
4527 struct rtnl_neigh *rn;
4528 struct nl_addr *nl_addr;
4529 int err;
4530
4531 rn = rtnl_neigh_alloc();
4532 if (!rn)
4533 return;
4534
4535 rtnl_neigh_set_family(rn, AF_BRIDGE);
4536 rtnl_neigh_set_ifindex(rn, bss->ifindex);
4537 nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4538 if (!nl_addr) {
4539 rtnl_neigh_put(rn);
4540 return;
4541 }
4542 rtnl_neigh_set_lladdr(rn, nl_addr);
4543
4544 err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4545 if (err < 0) {
4546 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4547 MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4548 bss->ifindex, nl_geterror(err));
4549 } else {
4550 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4551 MACSTR, MAC2STR(addr));
4552 }
4553
4554 nl_addr_put(nl_addr);
4555 rtnl_neigh_put(rn);
4556 #endif /* CONFIG_LIBNL3_ROUTE */
4557 }
4558
4559
4560 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4561 int deauth, u16 reason_code)
4562 {
4563 struct wpa_driver_nl80211_data *drv = bss->drv;
4564 struct nl_msg *msg;
4565 int ret;
4566
4567 msg = nlmsg_alloc();
4568 if (!msg)
4569 return -ENOMEM;
4570
4571 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4572
4573 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4574 if_nametoindex(bss->ifname));
4575 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4576 if (deauth == 0)
4577 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4578 WLAN_FC_STYPE_DISASSOC);
4579 else if (deauth == 1)
4580 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4581 WLAN_FC_STYPE_DEAUTH);
4582 if (reason_code)
4583 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4584
4585 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4586 wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4587 " --> %d (%s)",
4588 bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4589
4590 if (drv->rtnl_sk)
4591 rtnl_neigh_delete_fdb_entry(bss, addr);
4592
4593 if (ret == -ENOENT)
4594 return 0;
4595 return ret;
4596 nla_put_failure:
4597 nlmsg_free(msg);
4598 return -ENOBUFS;
4599 }
4600
4601
4602 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4603 {
4604 struct nl_msg *msg;
4605 struct wpa_driver_nl80211_data *drv2;
4606
4607 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4608
4609 /* stop listening for EAPOL on this interface */
4610 dl_list_for_each(drv2, &drv->global->interfaces,
4611 struct wpa_driver_nl80211_data, list)
4612 del_ifidx(drv2, ifidx);
4613
4614 msg = nlmsg_alloc();
4615 if (!msg)
4616 goto nla_put_failure;
4617
4618 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4619 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4620
4621 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4622 return;
4623 msg = NULL;
4624 nla_put_failure:
4625 nlmsg_free(msg);
4626 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4627 }
4628
4629
4630 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4631 {
4632 switch (mode) {
4633 case NL80211_IFTYPE_ADHOC:
4634 return "ADHOC";
4635 case NL80211_IFTYPE_STATION:
4636 return "STATION";
4637 case NL80211_IFTYPE_AP:
4638 return "AP";
4639 case NL80211_IFTYPE_AP_VLAN:
4640 return "AP_VLAN";
4641 case NL80211_IFTYPE_WDS:
4642 return "WDS";
4643 case NL80211_IFTYPE_MONITOR:
4644 return "MONITOR";
4645 case NL80211_IFTYPE_MESH_POINT:
4646 return "MESH_POINT";
4647 case NL80211_IFTYPE_P2P_CLIENT:
4648 return "P2P_CLIENT";
4649 case NL80211_IFTYPE_P2P_GO:
4650 return "P2P_GO";
4651 case NL80211_IFTYPE_P2P_DEVICE:
4652 return "P2P_DEVICE";
4653 default:
4654 return "unknown";
4655 }
4656 }
4657
4658
4659 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4660 const char *ifname,
4661 enum nl80211_iftype iftype,
4662 const u8 *addr, int wds,
4663 int (*handler)(struct nl_msg *, void *),
4664 void *arg)
4665 {
4666 struct nl_msg *msg;
4667 int ifidx;
4668 int ret = -ENOBUFS;
4669
4670 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4671 iftype, nl80211_iftype_str(iftype));
4672
4673 msg = nlmsg_alloc();
4674 if (!msg)
4675 return -1;
4676
4677 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4678 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
4679 goto nla_put_failure;
4680 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4681 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4682
4683 if (iftype == NL80211_IFTYPE_MONITOR) {
4684 struct nlattr *flags;
4685
4686 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4687 if (!flags)
4688 goto nla_put_failure;
4689
4690 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
4691
4692 nla_nest_end(msg, flags);
4693 } else if (wds) {
4694 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4695 }
4696
4697 /*
4698 * Tell cfg80211 that the interface belongs to the socket that created
4699 * it, and the interface should be deleted when the socket is closed.
4700 */
4701 NLA_PUT_FLAG(msg, NL80211_ATTR_IFACE_SOCKET_OWNER);
4702
4703 ret = send_and_recv_msgs(drv, msg, handler, arg);
4704 msg = NULL;
4705 if (ret) {
4706 nla_put_failure:
4707 nlmsg_free(msg);
4708 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4709 ifname, ret, strerror(-ret));
4710 return ret;
4711 }
4712
4713 if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4714 return 0;
4715
4716 ifidx = if_nametoindex(ifname);
4717 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4718 ifname, ifidx);
4719
4720 if (ifidx <= 0)
4721 return -1;
4722
4723 /*
4724 * Some virtual interfaces need to process EAPOL packets and events on
4725 * the parent interface. This is used mainly with hostapd.
4726 */
4727 if (drv->hostapd ||
4728 iftype == NL80211_IFTYPE_AP_VLAN ||
4729 iftype == NL80211_IFTYPE_WDS ||
4730 iftype == NL80211_IFTYPE_MONITOR) {
4731 /* start listening for EAPOL on this interface */
4732 add_ifidx(drv, ifidx);
4733 }
4734
4735 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4736 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4737 nl80211_remove_iface(drv, ifidx);
4738 return -1;
4739 }
4740
4741 return ifidx;
4742 }
4743
4744
4745 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4746 const char *ifname, enum nl80211_iftype iftype,
4747 const u8 *addr, int wds,
4748 int (*handler)(struct nl_msg *, void *),
4749 void *arg, int use_existing)
4750 {
4751 int ret;
4752
4753 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4754 arg);
4755
4756 /* if error occurred and interface exists already */
4757 if (ret == -ENFILE && if_nametoindex(ifname)) {
4758 if (use_existing) {
4759 wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4760 ifname);
4761 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4762 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4763 addr) < 0 &&
4764 (linux_set_iface_flags(drv->global->ioctl_sock,
4765 ifname, 0) < 0 ||
4766 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4767 addr) < 0 ||
4768 linux_set_iface_flags(drv->global->ioctl_sock,
4769 ifname, 1) < 0))
4770 return -1;
4771 return -ENFILE;
4772 }
4773 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4774
4775 /* Try to remove the interface that was already there. */
4776 nl80211_remove_iface(drv, if_nametoindex(ifname));
4777
4778 /* Try to create the interface again */
4779 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4780 wds, handler, arg);
4781 }
4782
4783 if (ret >= 0 && is_p2p_net_interface(iftype))
4784 nl80211_disable_11b_rates(drv, ret, 1);
4785
4786 return ret;
4787 }
4788
4789
4790 static int nl80211_setup_ap(struct i802_bss *bss)
4791 {
4792 struct wpa_driver_nl80211_data *drv = bss->drv;
4793
4794 wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4795 bss->ifname, drv->device_ap_sme, drv->use_monitor);
4796
4797 /*
4798 * Disable Probe Request reporting unless we need it in this way for
4799 * devices that include the AP SME, in the other case (unless using
4800 * monitor iface) we'll get it through the nl_mgmt socket instead.
4801 */
4802 if (!drv->device_ap_sme)
4803 wpa_driver_nl80211_probe_req_report(bss, 0);
4804
4805 if (!drv->device_ap_sme && !drv->use_monitor)
4806 if (nl80211_mgmt_subscribe_ap(bss))
4807 return -1;
4808
4809 if (drv->device_ap_sme && !drv->use_monitor)
4810 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4811 return -1;
4812
4813 if (!drv->device_ap_sme && drv->use_monitor &&
4814 nl80211_create_monitor_interface(drv) &&
4815 !drv->device_ap_sme)
4816 return -1;
4817
4818 if (drv->device_ap_sme &&
4819 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4820 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4821 "Probe Request frame reporting in AP mode");
4822 /* Try to survive without this */
4823 }
4824
4825 return 0;
4826 }
4827
4828
4829 static void nl80211_teardown_ap(struct i802_bss *bss)
4830 {
4831 struct wpa_driver_nl80211_data *drv = bss->drv;
4832
4833 wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4834 bss->ifname, drv->device_ap_sme, drv->use_monitor);
4835 if (drv->device_ap_sme) {
4836 wpa_driver_nl80211_probe_req_report(bss, 0);
4837 if (!drv->use_monitor)
4838 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4839 } else if (drv->use_monitor)
4840 nl80211_remove_monitor_interface(drv);
4841 else
4842 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4843
4844 bss->beacon_set = 0;
4845 }
4846
4847
4848 static int nl80211_send_eapol_data(struct i802_bss *bss,
4849 const u8 *addr, const u8 *data,
4850 size_t data_len)
4851 {
4852 struct sockaddr_ll ll;
4853 int ret;
4854
4855 if (bss->drv->eapol_tx_sock < 0) {
4856 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4857 return -1;
4858 }
4859
4860 os_memset(&ll, 0, sizeof(ll));
4861 ll.sll_family = AF_PACKET;
4862 ll.sll_ifindex = bss->ifindex;
4863 ll.sll_protocol = htons(ETH_P_PAE);
4864 ll.sll_halen = ETH_ALEN;
4865 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4866 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4867 (struct sockaddr *) &ll, sizeof(ll));
4868 if (ret < 0)
4869 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4870 strerror(errno));
4871
4872 return ret;
4873 }
4874
4875
4876 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4877
4878 static int wpa_driver_nl80211_hapd_send_eapol(
4879 void *priv, const u8 *addr, const u8 *data,
4880 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4881 {
4882 struct i802_bss *bss = priv;
4883 struct wpa_driver_nl80211_data *drv = bss->drv;
4884 struct ieee80211_hdr *hdr;
4885 size_t len;
4886 u8 *pos;
4887 int res;
4888 int qos = flags & WPA_STA_WMM;
4889
4890 if (drv->device_ap_sme || !drv->use_monitor)
4891 return nl80211_send_eapol_data(bss, addr, data, data_len);
4892
4893 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4894 data_len;
4895 hdr = os_zalloc(len);
4896 if (hdr == NULL) {
4897 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4898 (unsigned long) len);
4899 return -1;
4900 }
4901
4902 hdr->frame_control =
4903 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4904 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4905 if (encrypt)
4906 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4907 if (qos) {
4908 hdr->frame_control |=
4909 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4910 }
4911
4912 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4913 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4914 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4915 pos = (u8 *) (hdr + 1);
4916
4917 if (qos) {
4918 /* Set highest priority in QoS header */
4919 pos[0] = 7;
4920 pos[1] = 0;
4921 pos += 2;
4922 }
4923
4924 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4925 pos += sizeof(rfc1042_header);
4926 WPA_PUT_BE16(pos, ETH_P_PAE);
4927 pos += 2;
4928 memcpy(pos, data, data_len);
4929
4930 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4931 0, 0, 0, 0);
4932 if (res < 0) {
4933 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4934 "failed: %d (%s)",
4935 (unsigned long) len, errno, strerror(errno));
4936 }
4937 os_free(hdr);
4938
4939 return res;
4940 }
4941
4942
4943 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4944 int total_flags,
4945 int flags_or, int flags_and)
4946 {
4947 struct i802_bss *bss = priv;
4948 struct wpa_driver_nl80211_data *drv = bss->drv;
4949 struct nl_msg *msg;
4950 struct nlattr *flags;
4951 struct nl80211_sta_flag_update upd;
4952
4953 wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4954 " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4955 bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4956 !!(total_flags & WPA_STA_AUTHORIZED));
4957
4958 msg = nlmsg_alloc();
4959 if (!msg)
4960 return -ENOMEM;
4961
4962 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
4963
4964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4965 if_nametoindex(bss->ifname));
4966 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4967
4968 /*
4969 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4970 * can be removed eventually.
4971 */
4972 flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4973 if (!flags)
4974 goto nla_put_failure;
4975 if (total_flags & WPA_STA_AUTHORIZED)
4976 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
4977
4978 if (total_flags & WPA_STA_WMM)
4979 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
4980
4981 if (total_flags & WPA_STA_SHORT_PREAMBLE)
4982 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
4983
4984 if (total_flags & WPA_STA_MFP)
4985 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
4986
4987 if (total_flags & WPA_STA_TDLS_PEER)
4988 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
4989
4990 nla_nest_end(msg, flags);
4991
4992 os_memset(&upd, 0, sizeof(upd));
4993 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4994 upd.set = sta_flags_nl80211(flags_or);
4995 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4996
4997 return send_and_recv_msgs(drv, msg, NULL, NULL);
4998 nla_put_failure:
4999 nlmsg_free(msg);
5000 return -ENOBUFS;
5001 }
5002
5003
5004 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5005 struct wpa_driver_associate_params *params)
5006 {
5007 enum nl80211_iftype nlmode, old_mode;
5008
5009 if (params->p2p) {
5010 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5011 "group (GO)");
5012 nlmode = NL80211_IFTYPE_P2P_GO;
5013 } else
5014 nlmode = NL80211_IFTYPE_AP;
5015
5016 old_mode = drv->nlmode;
5017 if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
5018 nl80211_remove_monitor_interface(drv);
5019 return -1;
5020 }
5021
5022 if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
5023 if (old_mode != nlmode)
5024 wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
5025 nl80211_remove_monitor_interface(drv);
5026 return -1;
5027 }
5028
5029 return 0;
5030 }
5031
5032
5033 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5034 {
5035 struct nl_msg *msg;
5036 int ret = -1;
5037
5038 msg = nlmsg_alloc();
5039 if (!msg)
5040 return -1;
5041
5042 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5043 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5044 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5045 msg = NULL;
5046 if (ret) {
5047 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5048 "(%s)", ret, strerror(-ret));
5049 goto nla_put_failure;
5050 }
5051
5052 ret = 0;
5053 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5054
5055 nla_put_failure:
5056 if (wpa_driver_nl80211_set_mode(drv->first_bss,
5057 NL80211_IFTYPE_STATION)) {
5058 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5059 "station mode");
5060 }
5061
5062 nlmsg_free(msg);
5063 return ret;
5064 }
5065
5066
5067 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5068 struct wpa_driver_associate_params *params)
5069 {
5070 struct nl_msg *msg;
5071 int ret = -1;
5072 int count = 0;
5073
5074 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5075
5076 if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5077 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5078 "IBSS mode");
5079 return -1;
5080 }
5081
5082 retry:
5083 msg = nlmsg_alloc();
5084 if (!msg)
5085 return -1;
5086
5087 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5088 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5089
5090 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5091 goto nla_put_failure;
5092
5093 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5094 params->ssid, params->ssid_len);
5095 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5096 params->ssid);
5097 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5098 drv->ssid_len = params->ssid_len;
5099
5100 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
5101 wpa_printf(MSG_DEBUG, " * ht_enabled=%d", params->freq.ht_enabled);
5102 wpa_printf(MSG_DEBUG, " * sec_channel_offset=%d",
5103 params->freq.sec_channel_offset);
5104 wpa_printf(MSG_DEBUG, " * vht_enabled=%d", params->freq.vht_enabled);
5105 wpa_printf(MSG_DEBUG, " * center_freq1=%d", params->freq.center_freq1);
5106 wpa_printf(MSG_DEBUG, " * center_freq2=%d", params->freq.center_freq2);
5107 wpa_printf(MSG_DEBUG, " * bandwidth=%d", params->freq.bandwidth);
5108 if (nl80211_put_freq_params(msg, &params->freq) < 0)
5109 goto nla_put_failure;
5110
5111 if (params->beacon_int > 0) {
5112 wpa_printf(MSG_DEBUG, " * beacon_int=%d", params->beacon_int);
5113 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL,
5114 params->beacon_int);
5115 }
5116
5117 ret = nl80211_set_conn_keys(params, msg);
5118 if (ret)
5119 goto nla_put_failure;
5120
5121 if (params->bssid && params->fixed_bssid) {
5122 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR,
5123 MAC2STR(params->bssid));
5124 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5125 }
5126
5127 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5128 params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5129 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5130 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5131 wpa_printf(MSG_DEBUG, " * control port");
5132 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5133 }
5134
5135 if (params->wpa_ie) {
5136 wpa_hexdump(MSG_DEBUG,
5137 " * Extra IEs for Beacon/Probe Response frames",
5138 params->wpa_ie, params->wpa_ie_len);
5139 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5140 params->wpa_ie);
5141 }
5142
5143 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5144 msg = NULL;
5145 if (ret) {
5146 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5147 ret, strerror(-ret));
5148 count++;
5149 if (ret == -EALREADY && count == 1) {
5150 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5151 "forced leave");
5152 nl80211_leave_ibss(drv);
5153 nlmsg_free(msg);
5154 goto retry;
5155 }
5156
5157 goto nla_put_failure;
5158 }
5159 ret = 0;
5160 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5161
5162 nla_put_failure:
5163 nlmsg_free(msg);
5164 return ret;
5165 }
5166
5167
5168 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5169 struct wpa_driver_associate_params *params,
5170 struct nl_msg *msg)
5171 {
5172 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5173
5174 if (params->bssid) {
5175 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
5176 MAC2STR(params->bssid));
5177 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5178 }
5179
5180 if (params->bssid_hint) {
5181 wpa_printf(MSG_DEBUG, " * bssid_hint=" MACSTR,
5182 MAC2STR(params->bssid_hint));
5183 NLA_PUT(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5184 params->bssid_hint);
5185 }
5186
5187 if (params->freq.freq) {
5188 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq.freq);
5189 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq.freq);
5190 drv->assoc_freq = params->freq.freq;
5191 } else
5192 drv->assoc_freq = 0;
5193
5194 if (params->freq_hint) {
5195 wpa_printf(MSG_DEBUG, " * freq_hint=%d", params->freq_hint);
5196 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5197 params->freq_hint);
5198 }
5199
5200 if (params->bg_scan_period >= 0) {
5201 wpa_printf(MSG_DEBUG, " * bg scan period=%d",
5202 params->bg_scan_period);
5203 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5204 params->bg_scan_period);
5205 }
5206
5207 if (params->ssid) {
5208 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
5209 params->ssid, params->ssid_len);
5210 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5211 params->ssid);
5212 if (params->ssid_len > sizeof(drv->ssid))
5213 goto nla_put_failure;
5214 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5215 drv->ssid_len = params->ssid_len;
5216 }
5217
5218 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
5219 if (params->wpa_ie)
5220 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5221 params->wpa_ie);
5222
5223 if (params->wpa_proto) {
5224 enum nl80211_wpa_versions ver = 0;
5225
5226 if (params->wpa_proto & WPA_PROTO_WPA)
5227 ver |= NL80211_WPA_VERSION_1;
5228 if (params->wpa_proto & WPA_PROTO_RSN)
5229 ver |= NL80211_WPA_VERSION_2;
5230
5231 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
5232 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5233 }
5234
5235 if (params->pairwise_suite != WPA_CIPHER_NONE) {
5236 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5237 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
5238 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5239 }
5240
5241 if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5242 !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5243 /*
5244 * This is likely to work even though many drivers do not
5245 * advertise support for operations without GTK.
5246 */
5247 wpa_printf(MSG_DEBUG, " * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5248 } else if (params->group_suite != WPA_CIPHER_NONE) {
5249 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5250 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
5251 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5252 }
5253
5254 if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5255 params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5256 params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5257 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5258 params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5259 params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5260 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5261 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5262 params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
5263 int mgmt = WLAN_AKM_SUITE_PSK;
5264
5265 switch (params->key_mgmt_suite) {
5266 case WPA_KEY_MGMT_CCKM:
5267 mgmt = WLAN_AKM_SUITE_CCKM;
5268 break;
5269 case WPA_KEY_MGMT_IEEE8021X:
5270 mgmt = WLAN_AKM_SUITE_8021X;
5271 break;
5272 case WPA_KEY_MGMT_FT_IEEE8021X:
5273 mgmt = WLAN_AKM_SUITE_FT_8021X;
5274 break;
5275 case WPA_KEY_MGMT_FT_PSK:
5276 mgmt = WLAN_AKM_SUITE_FT_PSK;
5277 break;
5278 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5279 mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5280 break;
5281 case WPA_KEY_MGMT_PSK_SHA256:
5282 mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5283 break;
5284 case WPA_KEY_MGMT_OSEN:
5285 mgmt = WLAN_AKM_SUITE_OSEN;
5286 break;
5287 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
5288 mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
5289 break;
5290 case WPA_KEY_MGMT_PSK:
5291 default:
5292 mgmt = WLAN_AKM_SUITE_PSK;
5293 break;
5294 }
5295 wpa_printf(MSG_DEBUG, " * akm=0x%x", mgmt);
5296 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5297 }
5298
5299 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5300
5301 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5302 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5303
5304 if (params->rrm_used) {
5305 u32 drv_rrm_flags = drv->capa.rrm_flags;
5306 if (!(drv_rrm_flags &
5307 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
5308 !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET))
5309 goto nla_put_failure;
5310 NLA_PUT_FLAG(msg, NL80211_ATTR_USE_RRM);
5311 }
5312
5313 if (params->disable_ht)
5314 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
5315
5316 if (params->htcaps && params->htcaps_mask) {
5317 int sz = sizeof(struct ieee80211_ht_capabilities);
5318 wpa_hexdump(MSG_DEBUG, " * htcaps", params->htcaps, sz);
5319 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
5320 wpa_hexdump(MSG_DEBUG, " * htcaps_mask",
5321 params->htcaps_mask, sz);
5322 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5323 params->htcaps_mask);
5324 }
5325
5326 #ifdef CONFIG_VHT_OVERRIDES
5327 if (params->disable_vht) {
5328 wpa_printf(MSG_DEBUG, " * VHT disabled");
5329 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
5330 }
5331
5332 if (params->vhtcaps && params->vhtcaps_mask) {
5333 int sz = sizeof(struct ieee80211_vht_capabilities);
5334 wpa_hexdump(MSG_DEBUG, " * vhtcaps", params->vhtcaps, sz);
5335 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
5336 wpa_hexdump(MSG_DEBUG, " * vhtcaps_mask",
5337 params->vhtcaps_mask, sz);
5338 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5339 params->vhtcaps_mask);
5340 }
5341 #endif /* CONFIG_VHT_OVERRIDES */
5342
5343 if (params->p2p)
5344 wpa_printf(MSG_DEBUG, " * P2P group");
5345
5346 return 0;
5347 nla_put_failure:
5348 return -1;
5349 }
5350
5351
5352 static int wpa_driver_nl80211_try_connect(
5353 struct wpa_driver_nl80211_data *drv,
5354 struct wpa_driver_associate_params *params)
5355 {
5356 struct nl_msg *msg;
5357 enum nl80211_auth_type type;
5358 int ret;
5359 int algs;
5360
5361 if (params->req_key_mgmt_offload && params->psk &&
5362 (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5363 params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5364 params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5365 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5366 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5367 if (ret)
5368 return ret;
5369 }
5370
5371 msg = nlmsg_alloc();
5372 if (!msg)
5373 return -1;
5374
5375 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5376 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5377
5378 ret = nl80211_connect_common(drv, params, msg);
5379 if (ret)
5380 goto nla_put_failure;
5381
5382 algs = 0;
5383 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5384 algs++;
5385 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5386 algs++;
5387 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5388 algs++;
5389 if (algs > 1) {
5390 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
5391 "selection");
5392 goto skip_auth_type;
5393 }
5394
5395 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5396 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5397 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5398 type = NL80211_AUTHTYPE_SHARED_KEY;
5399 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5400 type = NL80211_AUTHTYPE_NETWORK_EAP;
5401 else if (params->auth_alg & WPA_AUTH_ALG_FT)
5402 type = NL80211_AUTHTYPE_FT;
5403 else
5404 goto nla_put_failure;
5405
5406 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
5407 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5408
5409 skip_auth_type:
5410 ret = nl80211_set_conn_keys(params, msg);
5411 if (ret)
5412 goto nla_put_failure;
5413
5414 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5415 msg = NULL;
5416 if (ret) {
5417 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5418 "(%s)", ret, strerror(-ret));
5419 goto nla_put_failure;
5420 }
5421 ret = 0;
5422 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5423
5424 nla_put_failure:
5425 nlmsg_free(msg);
5426 return ret;
5427
5428 }
5429
5430
5431 static int wpa_driver_nl80211_connect(
5432 struct wpa_driver_nl80211_data *drv,
5433 struct wpa_driver_associate_params *params)
5434 {
5435 int ret = wpa_driver_nl80211_try_connect(drv, params);
5436 if (ret == -EALREADY) {
5437 /*
5438 * cfg80211 does not currently accept new connections if
5439 * we are already connected. As a workaround, force
5440 * disconnection and try again.
5441 */
5442 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5443 "disconnecting before reassociation "
5444 "attempt");
5445 if (wpa_driver_nl80211_disconnect(
5446 drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5447 return -1;
5448 ret = wpa_driver_nl80211_try_connect(drv, params);
5449 }
5450 return ret;
5451 }
5452
5453
5454 static int wpa_driver_nl80211_associate(
5455 void *priv, struct wpa_driver_associate_params *params)
5456 {
5457 struct i802_bss *bss = priv;
5458 struct wpa_driver_nl80211_data *drv = bss->drv;
5459 int ret;
5460 struct nl_msg *msg;
5461
5462 if (params->mode == IEEE80211_MODE_AP)
5463 return wpa_driver_nl80211_ap(drv, params);
5464
5465 if (params->mode == IEEE80211_MODE_IBSS)
5466 return wpa_driver_nl80211_ibss(drv, params);
5467
5468 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5469 enum nl80211_iftype nlmode = params->p2p ?
5470 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5471
5472 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5473 return -1;
5474 return wpa_driver_nl80211_connect(drv, params);
5475 }
5476
5477 nl80211_mark_disconnected(drv);
5478
5479 msg = nlmsg_alloc();
5480 if (!msg)
5481 return -1;
5482
5483 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5484 drv->ifindex);
5485 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5486
5487 ret = nl80211_connect_common(drv, params, msg);
5488 if (ret)
5489 goto nla_put_failure;
5490
5491 if (params->prev_bssid) {
5492 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
5493 MAC2STR(params->prev_bssid));
5494 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5495 params->prev_bssid);
5496 }
5497
5498 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5499 msg = NULL;
5500 if (ret) {
5501 wpa_dbg(drv->ctx, MSG_DEBUG,
5502 "nl80211: MLME command failed (assoc): ret=%d (%s)",
5503 ret, strerror(-ret));
5504 nl80211_dump_scan(drv);
5505 goto nla_put_failure;
5506 }
5507 ret = 0;
5508 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5509 "successfully");
5510
5511 nla_put_failure:
5512 nlmsg_free(msg);
5513 return ret;
5514 }
5515
5516
5517 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5518 int ifindex, enum nl80211_iftype mode)
5519 {
5520 struct nl_msg *msg;
5521 int ret = -ENOBUFS;
5522
5523 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5524 ifindex, mode, nl80211_iftype_str(mode));
5525
5526 msg = nlmsg_alloc();
5527 if (!msg)
5528 return -ENOMEM;
5529
5530 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5531 if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5532 goto nla_put_failure;
5533 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5534
5535 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5536 msg = NULL;
5537 if (!ret)
5538 return 0;
5539 nla_put_failure:
5540 nlmsg_free(msg);
5541 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5542 " %d (%s)", ifindex, mode, ret, strerror(-ret));
5543 return ret;
5544 }
5545
5546
5547 static int wpa_driver_nl80211_set_mode_impl(
5548 struct i802_bss *bss,
5549 enum nl80211_iftype nlmode,
5550 struct hostapd_freq_params *desired_freq_params)
5551 {
5552 struct wpa_driver_nl80211_data *drv = bss->drv;
5553 int ret = -1;
5554 int i;
5555 int was_ap = is_ap_interface(drv->nlmode);
5556 int res;
5557 int mode_switch_res;
5558
5559 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5560 if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5561 mode_switch_res = 0;
5562
5563 if (mode_switch_res == 0) {
5564 drv->nlmode = nlmode;
5565 ret = 0;
5566 goto done;
5567 }
5568
5569 if (mode_switch_res == -ENODEV)
5570 return -1;
5571
5572 if (nlmode == drv->nlmode) {
5573 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5574 "requested mode - ignore error");
5575 ret = 0;
5576 goto done; /* Already in the requested mode */
5577 }
5578
5579 /* mac80211 doesn't allow mode changes while the device is up, so
5580 * take the device down, try to set the mode again, and bring the
5581 * device back up.
5582 */
5583 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5584 "interface down");
5585 for (i = 0; i < 10; i++) {
5586 res = i802_set_iface_flags(bss, 0);
5587 if (res == -EACCES || res == -ENODEV)
5588 break;
5589 if (res != 0) {
5590 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5591 "interface down");
5592 os_sleep(0, 100000);
5593 continue;
5594 }
5595
5596 /*
5597 * Setting the mode will fail for some drivers if the phy is
5598 * on a frequency that the mode is disallowed in.
5599 */
5600 if (desired_freq_params) {
5601 res = i802_set_freq(bss, desired_freq_params);
5602 if (res) {
5603 wpa_printf(MSG_DEBUG,
5604 "nl80211: Failed to set frequency on interface");
5605 }
5606 }
5607
5608 /* Try to set the mode again while the interface is down */
5609 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5610 if (mode_switch_res == -EBUSY) {
5611 wpa_printf(MSG_DEBUG,
5612 "nl80211: Delaying mode set while interface going down");
5613 os_sleep(0, 100000);
5614 continue;
5615 }
5616 ret = mode_switch_res;
5617 break;
5618 }
5619
5620 if (!ret) {
5621 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5622 "interface is down");
5623 drv->nlmode = nlmode;
5624 drv->ignore_if_down_event = 1;
5625 }
5626
5627 /* Bring the interface back up */
5628 res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5629 if (res != 0) {
5630 wpa_printf(MSG_DEBUG,
5631 "nl80211: Failed to set interface up after switching mode");
5632 ret = -1;
5633 }
5634
5635 done:
5636 if (ret) {
5637 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5638 "from %d failed", nlmode, drv->nlmode);
5639 return ret;
5640 }
5641
5642 if (is_p2p_net_interface(nlmode))
5643 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5644 else if (drv->disabled_11b_rates)
5645 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5646
5647 if (is_ap_interface(nlmode)) {
5648 nl80211_mgmt_unsubscribe(bss, "start AP");
5649 /* Setup additional AP mode functionality if needed */
5650 if (nl80211_setup_ap(bss))
5651 return -1;
5652 } else if (was_ap) {
5653 /* Remove additional AP mode functionality */
5654 nl80211_teardown_ap(bss);
5655 } else {
5656 nl80211_mgmt_unsubscribe(bss, "mode change");
5657 }
5658
5659 if (is_mesh_interface(nlmode) &&
5660 nl80211_mgmt_subscribe_mesh(bss))
5661 return -1;
5662
5663 if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5664 !is_mesh_interface(nlmode) &&
5665 nl80211_mgmt_subscribe_non_ap(bss) < 0)
5666 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5667 "frame processing - ignore for now");
5668
5669 return 0;
5670 }
5671
5672
5673 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5674 enum nl80211_iftype nlmode)
5675 {
5676 return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5677 }
5678
5679
5680 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5681 struct hostapd_freq_params *freq)
5682 {
5683 return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5684 freq);
5685 }
5686
5687
5688 static int wpa_driver_nl80211_get_capa(void *priv,
5689 struct wpa_driver_capa *capa)
5690 {
5691 struct i802_bss *bss = priv;
5692 struct wpa_driver_nl80211_data *drv = bss->drv;
5693
5694 if (!drv->has_capability)
5695 return -1;
5696 os_memcpy(capa, &drv->capa, sizeof(*capa));
5697 if (drv->extended_capa && drv->extended_capa_mask) {
5698 capa->extended_capa = drv->extended_capa;
5699 capa->extended_capa_mask = drv->extended_capa_mask;
5700 capa->extended_capa_len = drv->extended_capa_len;
5701 }
5702
5703 return 0;
5704 }
5705
5706
5707 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5708 {
5709 struct i802_bss *bss = priv;
5710 struct wpa_driver_nl80211_data *drv = bss->drv;
5711
5712 wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5713 bss->ifname, drv->operstate, state,
5714 state ? "UP" : "DORMANT");
5715 drv->operstate = state;
5716 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5717 state ? IF_OPER_UP : IF_OPER_DORMANT);
5718 }
5719
5720
5721 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5722 {
5723 struct i802_bss *bss = priv;
5724 struct wpa_driver_nl80211_data *drv = bss->drv;
5725 struct nl_msg *msg;
5726 struct nl80211_sta_flag_update upd;
5727 int ret = -ENOBUFS;
5728
5729 if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5730 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5731 return 0;
5732 }
5733
5734 wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5735 MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5736
5737 msg = nlmsg_alloc();
5738 if (!msg)
5739 return -ENOMEM;
5740
5741 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5742
5743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5744 if_nametoindex(bss->ifname));
5745 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5746
5747 os_memset(&upd, 0, sizeof(upd));
5748 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5749 if (authorized)
5750 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5751 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5752
5753 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5754 msg = NULL;
5755 if (!ret)
5756 return 0;
5757 nla_put_failure:
5758 nlmsg_free(msg);
5759 wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5760 ret, strerror(-ret));
5761 return ret;
5762 }
5763
5764
5765 /* Set kernel driver on given frequency (MHz) */
5766 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5767 {
5768 struct i802_bss *bss = priv;
5769 return nl80211_set_channel(bss, freq, 0);
5770 }
5771
5772
5773 static inline int min_int(int a, int b)
5774 {
5775 if (a < b)
5776 return a;
5777 return b;
5778 }
5779
5780
5781 static int get_key_handler(struct nl_msg *msg, void *arg)
5782 {
5783 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5784 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5785
5786 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5787 genlmsg_attrlen(gnlh, 0), NULL);
5788
5789 /*
5790 * TODO: validate the key index and mac address!
5791 * Otherwise, there's a race condition as soon as
5792 * the kernel starts sending key notifications.
5793 */
5794
5795 if (tb[NL80211_ATTR_KEY_SEQ])
5796 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5797 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5798 return NL_SKIP;
5799 }
5800
5801
5802 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5803 int idx, u8 *seq)
5804 {
5805 struct i802_bss *bss = priv;
5806 struct wpa_driver_nl80211_data *drv = bss->drv;
5807 struct nl_msg *msg;
5808
5809 msg = nlmsg_alloc();
5810 if (!msg)
5811 return -ENOMEM;
5812
5813 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5814
5815 if (addr)
5816 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5817 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5818 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5819
5820 memset(seq, 0, 6);
5821
5822 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5823 nla_put_failure:
5824 nlmsg_free(msg);
5825 return -ENOBUFS;
5826 }
5827
5828
5829 static int i802_set_rts(void *priv, int rts)
5830 {
5831 struct i802_bss *bss = priv;
5832 struct wpa_driver_nl80211_data *drv = bss->drv;
5833 struct nl_msg *msg;
5834 int ret = -ENOBUFS;
5835 u32 val;
5836
5837 msg = nlmsg_alloc();
5838 if (!msg)
5839 return -ENOMEM;
5840
5841 if (rts >= 2347)
5842 val = (u32) -1;
5843 else
5844 val = rts;
5845
5846 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5847 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5848 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5849
5850 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5851 msg = NULL;
5852 if (!ret)
5853 return 0;
5854 nla_put_failure:
5855 nlmsg_free(msg);
5856 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5857 "%d (%s)", rts, ret, strerror(-ret));
5858 return ret;
5859 }
5860
5861
5862 static int i802_set_frag(void *priv, int frag)
5863 {
5864 struct i802_bss *bss = priv;
5865 struct wpa_driver_nl80211_data *drv = bss->drv;
5866 struct nl_msg *msg;
5867 int ret = -ENOBUFS;
5868 u32 val;
5869
5870 msg = nlmsg_alloc();
5871 if (!msg)
5872 return -ENOMEM;
5873
5874 if (frag >= 2346)
5875 val = (u32) -1;
5876 else
5877 val = frag;
5878
5879 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5880 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5881 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5882
5883 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5884 msg = NULL;
5885 if (!ret)
5886 return 0;
5887 nla_put_failure:
5888 nlmsg_free(msg);
5889 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5890 "%d: %d (%s)", frag, ret, strerror(-ret));
5891 return ret;
5892 }
5893
5894
5895 static int i802_flush(void *priv)
5896 {
5897 struct i802_bss *bss = priv;
5898 struct wpa_driver_nl80211_data *drv = bss->drv;
5899 struct nl_msg *msg;
5900 int res;
5901
5902 msg = nlmsg_alloc();
5903 if (!msg)
5904 return -1;
5905
5906 wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5907 bss->ifname);
5908 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5909
5910 /*
5911 * XXX: FIX! this needs to flush all VLANs too
5912 */
5913 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5914 if_nametoindex(bss->ifname));
5915
5916 res = send_and_recv_msgs(drv, msg, NULL, NULL);
5917 if (res) {
5918 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5919 "(%s)", res, strerror(-res));
5920 }
5921 return res;
5922 nla_put_failure:
5923 nlmsg_free(msg);
5924 return -ENOBUFS;
5925 }
5926
5927
5928 static int get_sta_handler(struct nl_msg *msg, void *arg)
5929 {
5930 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5931 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5932 struct hostap_sta_driver_data *data = arg;
5933 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5934 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5935 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5936 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5937 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5938 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5939 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5940 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5941 };
5942
5943 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5944 genlmsg_attrlen(gnlh, 0), NULL);
5945
5946 /*
5947 * TODO: validate the interface and mac address!
5948 * Otherwise, there's a race condition as soon as
5949 * the kernel starts sending station notifications.
5950 */
5951
5952 if (!tb[NL80211_ATTR_STA_INFO]) {
5953 wpa_printf(MSG_DEBUG, "sta stats missing!");
5954 return NL_SKIP;
5955 }
5956 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5957 tb[NL80211_ATTR_STA_INFO],
5958 stats_policy)) {
5959 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5960 return NL_SKIP;
5961 }
5962
5963 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5964 data->inactive_msec =
5965 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5966 if (stats[NL80211_STA_INFO_RX_BYTES])
5967 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5968 if (stats[NL80211_STA_INFO_TX_BYTES])
5969 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5970 if (stats[NL80211_STA_INFO_RX_PACKETS])
5971 data->rx_packets =
5972 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5973 if (stats[NL80211_STA_INFO_TX_PACKETS])
5974 data->tx_packets =
5975 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5976 if (stats[NL80211_STA_INFO_TX_FAILED])
5977 data->tx_retry_failed =
5978 nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5979
5980 return NL_SKIP;
5981 }
5982
5983 static int i802_read_sta_data(struct i802_bss *bss,
5984 struct hostap_sta_driver_data *data,
5985 const u8 *addr)
5986 {
5987 struct wpa_driver_nl80211_data *drv = bss->drv;
5988 struct nl_msg *msg;
5989
5990 os_memset(data, 0, sizeof(*data));
5991 msg = nlmsg_alloc();
5992 if (!msg)
5993 return -ENOMEM;
5994
5995 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
5996
5997 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5999
6000 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6001 nla_put_failure:
6002 nlmsg_free(msg);
6003 return -ENOBUFS;
6004 }
6005
6006
6007 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6008 int cw_min, int cw_max, int burst_time)
6009 {
6010 struct i802_bss *bss = priv;
6011 struct wpa_driver_nl80211_data *drv = bss->drv;
6012 struct nl_msg *msg;
6013 struct nlattr *txq, *params;
6014
6015 msg = nlmsg_alloc();
6016 if (!msg)
6017 return -1;
6018
6019 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6020
6021 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6022
6023 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6024 if (!txq)
6025 goto nla_put_failure;
6026
6027 /* We are only sending parameters for a single TXQ at a time */
6028 params = nla_nest_start(msg, 1);
6029 if (!params)
6030 goto nla_put_failure;
6031
6032 switch (queue) {
6033 case 0:
6034 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6035 break;
6036 case 1:
6037 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6038 break;
6039 case 2:
6040 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6041 break;
6042 case 3:
6043 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6044 break;
6045 }
6046 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6047 * 32 usec, so need to convert the value here. */
6048 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6049 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6050 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6051 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6052
6053 nla_nest_end(msg, params);
6054
6055 nla_nest_end(msg, txq);
6056
6057 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6058 return 0;
6059 msg = NULL;
6060 nla_put_failure:
6061 nlmsg_free(msg);
6062 return -1;
6063 }
6064
6065
6066 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6067 const char *ifname, int vlan_id)
6068 {
6069 struct wpa_driver_nl80211_data *drv = bss->drv;
6070 struct nl_msg *msg;
6071 int ret = -ENOBUFS;
6072
6073 msg = nlmsg_alloc();
6074 if (!msg)
6075 return -ENOMEM;
6076
6077 wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6078 ", ifname=%s[%d], vlan_id=%d)",
6079 bss->ifname, if_nametoindex(bss->ifname),
6080 MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6081 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6082
6083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6084 if_nametoindex(bss->ifname));
6085 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6086 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6087 if_nametoindex(ifname));
6088
6089 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6090 msg = NULL;
6091 if (ret < 0) {
6092 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6093 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6094 MAC2STR(addr), ifname, vlan_id, ret,
6095 strerror(-ret));
6096 }
6097 nla_put_failure:
6098 nlmsg_free(msg);
6099 return ret;
6100 }
6101
6102
6103 static int i802_get_inact_sec(void *priv, const u8 *addr)
6104 {
6105 struct hostap_sta_driver_data data;
6106 int ret;
6107
6108 data.inactive_msec = (unsigned long) -1;
6109 ret = i802_read_sta_data(priv, &data, addr);
6110 if (ret || data.inactive_msec == (unsigned long) -1)
6111 return -1;
6112 return data.inactive_msec / 1000;
6113 }
6114
6115
6116 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6117 {
6118 #if 0
6119 /* TODO */
6120 #endif
6121 return 0;
6122 }
6123
6124
6125 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6126 int reason)
6127 {
6128 struct i802_bss *bss = priv;
6129 struct wpa_driver_nl80211_data *drv = bss->drv;
6130 struct ieee80211_mgmt mgmt;
6131
6132 if (is_mesh_interface(drv->nlmode))
6133 return -1;
6134
6135 if (drv->device_ap_sme)
6136 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6137
6138 memset(&mgmt, 0, sizeof(mgmt));
6139 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6140 WLAN_FC_STYPE_DEAUTH);
6141 memcpy(mgmt.da, addr, ETH_ALEN);
6142 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6143 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6144 mgmt.u.deauth.reason_code = host_to_le16(reason);
6145 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6146 IEEE80211_HDRLEN +
6147 sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6148 0);
6149 }
6150
6151
6152 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6153 int reason)
6154 {
6155 struct i802_bss *bss = priv;
6156 struct wpa_driver_nl80211_data *drv = bss->drv;
6157 struct ieee80211_mgmt mgmt;
6158
6159 if (is_mesh_interface(drv->nlmode))
6160 return -1;
6161
6162 if (drv->device_ap_sme)
6163 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6164
6165 memset(&mgmt, 0, sizeof(mgmt));
6166 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6167 WLAN_FC_STYPE_DISASSOC);
6168 memcpy(mgmt.da, addr, ETH_ALEN);
6169 memcpy(mgmt.sa, own_addr, ETH_ALEN);
6170 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6171 mgmt.u.disassoc.reason_code = host_to_le16(reason);
6172 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6173 IEEE80211_HDRLEN +
6174 sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6175 0);
6176 }
6177
6178
6179 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6180 {
6181 char buf[200], *pos, *end;
6182 int i, res;
6183
6184 pos = buf;
6185 end = pos + sizeof(buf);
6186
6187 for (i = 0; i < drv->num_if_indices; i++) {
6188 if (!drv->if_indices[i])
6189 continue;
6190 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6191 if (res < 0 || res >= end - pos)
6192 break;
6193 pos += res;
6194 }
6195 *pos = '\0';
6196
6197 wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6198 drv->num_if_indices, buf);
6199 }
6200
6201
6202 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6203 {
6204 int i;
6205 int *old;
6206
6207 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6208 ifidx);
6209 if (have_ifidx(drv, ifidx)) {
6210 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6211 ifidx);
6212 return;
6213 }
6214 for (i = 0; i < drv->num_if_indices; i++) {
6215 if (drv->if_indices[i] == 0) {
6216 drv->if_indices[i] = ifidx;
6217 dump_ifidx(drv);
6218 return;
6219 }
6220 }
6221
6222 if (drv->if_indices != drv->default_if_indices)
6223 old = drv->if_indices;
6224 else
6225 old = NULL;
6226
6227 drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6228 sizeof(int));
6229 if (!drv->if_indices) {
6230 if (!old)
6231 drv->if_indices = drv->default_if_indices;
6232 else
6233 drv->if_indices = old;
6234 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6235 "interfaces");
6236 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6237 return;
6238 } else if (!old)
6239 os_memcpy(drv->if_indices, drv->default_if_indices,
6240 sizeof(drv->default_if_indices));
6241 drv->if_indices[drv->num_if_indices] = ifidx;
6242 drv->num_if_indices++;
6243 dump_ifidx(drv);
6244 }
6245
6246
6247 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6248 {
6249 int i;
6250
6251 for (i = 0; i < drv->num_if_indices; i++) {
6252 if (drv->if_indices[i] == ifidx) {
6253 drv->if_indices[i] = 0;
6254 break;
6255 }
6256 }
6257 dump_ifidx(drv);
6258 }
6259
6260
6261 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6262 {
6263 int i;
6264
6265 for (i = 0; i < drv->num_if_indices; i++)
6266 if (drv->if_indices[i] == ifidx)
6267 return 1;
6268
6269 return 0;
6270 }
6271
6272
6273 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6274 const char *bridge_ifname, char *ifname_wds)
6275 {
6276 struct i802_bss *bss = priv;
6277 struct wpa_driver_nl80211_data *drv = bss->drv;
6278 char name[IFNAMSIZ + 1];
6279
6280 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6281 if (ifname_wds)
6282 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6283
6284 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6285 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6286 if (val) {
6287 if (!if_nametoindex(name)) {
6288 if (nl80211_create_iface(drv, name,
6289 NL80211_IFTYPE_AP_VLAN,
6290 bss->addr, 1, NULL, NULL, 0) <
6291 0)
6292 return -1;
6293 if (bridge_ifname &&
6294 linux_br_add_if(drv->global->ioctl_sock,
6295 bridge_ifname, name) < 0)
6296 return -1;
6297 }
6298 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6299 wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6300 "interface %s up", name);
6301 }
6302 return i802_set_sta_vlan(priv, addr, name, 0);
6303 } else {
6304 if (bridge_ifname)
6305 linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6306 name);
6307
6308 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6309 nl80211_remove_iface(drv, if_nametoindex(name));
6310 return 0;
6311 }
6312 }
6313
6314
6315 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6316 {
6317 struct wpa_driver_nl80211_data *drv = eloop_ctx;
6318 struct sockaddr_ll lladdr;
6319 unsigned char buf[3000];
6320 int len;
6321 socklen_t fromlen = sizeof(lladdr);
6322
6323 len = recvfrom(sock, buf, sizeof(buf), 0,
6324 (struct sockaddr *)&lladdr, &fromlen);
6325 if (len < 0) {
6326 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6327 strerror(errno));
6328 return;
6329 }
6330
6331 if (have_ifidx(drv, lladdr.sll_ifindex))
6332 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6333 }
6334
6335
6336 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6337 struct i802_bss *bss,
6338 const char *brname, const char *ifname)
6339 {
6340 int br_ifindex;
6341 char in_br[IFNAMSIZ];
6342
6343 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6344 br_ifindex = if_nametoindex(brname);
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 br_ifindex = if_nametoindex(brname);
6358 add_ifidx(drv, br_ifindex);
6359 }
6360 bss->br_ifindex = br_ifindex;
6361
6362 if (linux_br_get(in_br, ifname) == 0) {
6363 if (os_strcmp(in_br, brname) == 0)
6364 return 0; /* already in the bridge */
6365
6366 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6367 "bridge %s", ifname, in_br);
6368 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6369 0) {
6370 wpa_printf(MSG_ERROR, "nl80211: Failed to "
6371 "remove interface %s from bridge "
6372 "%s: %s",
6373 ifname, brname, strerror(errno));
6374 return -1;
6375 }
6376 }
6377
6378 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6379 ifname, brname);
6380 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6381 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6382 "into bridge %s: %s",
6383 ifname, brname, strerror(errno));
6384 return -1;
6385 }
6386 bss->added_if_into_bridge = 1;
6387
6388 return 0;
6389 }
6390
6391
6392 static void *i802_init(struct hostapd_data *hapd,
6393 struct wpa_init_params *params)
6394 {
6395 struct wpa_driver_nl80211_data *drv;
6396 struct i802_bss *bss;
6397 size_t i;
6398 char brname[IFNAMSIZ];
6399 int ifindex, br_ifindex;
6400 int br_added = 0;
6401
6402 bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6403 params->global_priv, 1,
6404 params->bssid);
6405 if (bss == NULL)
6406 return NULL;
6407
6408 drv = bss->drv;
6409
6410 if (linux_br_get(brname, params->ifname) == 0) {
6411 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6412 params->ifname, brname);
6413 br_ifindex = if_nametoindex(brname);
6414 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6415 } else {
6416 brname[0] = '\0';
6417 br_ifindex = 0;
6418 }
6419 bss->br_ifindex = br_ifindex;
6420
6421 for (i = 0; i < params->num_bridge; i++) {
6422 if (params->bridge[i]) {
6423 ifindex = if_nametoindex(params->bridge[i]);
6424 if (ifindex)
6425 add_ifidx(drv, ifindex);
6426 if (ifindex == br_ifindex)
6427 br_added = 1;
6428 }
6429 }
6430 if (!br_added && br_ifindex &&
6431 (params->num_bridge == 0 || !params->bridge[0]))
6432 add_ifidx(drv, br_ifindex);
6433
6434 /* start listening for EAPOL on the default AP interface */
6435 add_ifidx(drv, drv->ifindex);
6436
6437 if (params->num_bridge && params->bridge[0] &&
6438 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6439 goto failed;
6440
6441 #ifdef CONFIG_LIBNL3_ROUTE
6442 if (bss->added_if_into_bridge) {
6443 drv->rtnl_sk = nl_socket_alloc();
6444 if (drv->rtnl_sk == NULL) {
6445 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6446 goto failed;
6447 }
6448
6449 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6450 wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6451 strerror(errno));
6452 goto failed;
6453 }
6454 }
6455 #endif /* CONFIG_LIBNL3_ROUTE */
6456
6457 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6458 if (drv->eapol_sock < 0) {
6459 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6460 strerror(errno));
6461 goto failed;
6462 }
6463
6464 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6465 {
6466 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6467 goto failed;
6468 }
6469
6470 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6471 params->own_addr))
6472 goto failed;
6473 os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6474
6475 memcpy(bss->addr, params->own_addr, ETH_ALEN);
6476
6477 return bss;
6478
6479 failed:
6480 wpa_driver_nl80211_deinit(bss);
6481 return NULL;
6482 }
6483
6484
6485 static void i802_deinit(void *priv)
6486 {
6487 struct i802_bss *bss = priv;
6488 wpa_driver_nl80211_deinit(bss);
6489 }
6490
6491
6492 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6493 enum wpa_driver_if_type type)
6494 {
6495 switch (type) {
6496 case WPA_IF_STATION:
6497 return NL80211_IFTYPE_STATION;
6498 case WPA_IF_P2P_CLIENT:
6499 case WPA_IF_P2P_GROUP:
6500 return NL80211_IFTYPE_P2P_CLIENT;
6501 case WPA_IF_AP_VLAN:
6502 return NL80211_IFTYPE_AP_VLAN;
6503 case WPA_IF_AP_BSS:
6504 return NL80211_IFTYPE_AP;
6505 case WPA_IF_P2P_GO:
6506 return NL80211_IFTYPE_P2P_GO;
6507 case WPA_IF_P2P_DEVICE:
6508 return NL80211_IFTYPE_P2P_DEVICE;
6509 }
6510 return -1;
6511 }
6512
6513
6514 #ifdef CONFIG_P2P
6515
6516 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6517 {
6518 struct wpa_driver_nl80211_data *drv;
6519 dl_list_for_each(drv, &global->interfaces,
6520 struct wpa_driver_nl80211_data, list) {
6521 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6522 return 1;
6523 }
6524 return 0;
6525 }
6526
6527
6528 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6529 u8 *new_addr)
6530 {
6531 unsigned int idx;
6532
6533 if (!drv->global)
6534 return -1;
6535
6536 os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6537 for (idx = 0; idx < 64; idx++) {
6538 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6539 new_addr[0] ^= idx << 2;
6540 if (!nl80211_addr_in_use(drv->global, new_addr))
6541 break;
6542 }
6543 if (idx == 64)
6544 return -1;
6545
6546 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6547 MACSTR, MAC2STR(new_addr));
6548
6549 return 0;
6550 }
6551
6552 #endif /* CONFIG_P2P */
6553
6554
6555 struct wdev_info {
6556 u64 wdev_id;
6557 int wdev_id_set;
6558 u8 macaddr[ETH_ALEN];
6559 };
6560
6561 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6562 {
6563 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6564 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6565 struct wdev_info *wi = arg;
6566
6567 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6568 genlmsg_attrlen(gnlh, 0), NULL);
6569 if (tb[NL80211_ATTR_WDEV]) {
6570 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6571 wi->wdev_id_set = 1;
6572 }
6573
6574 if (tb[NL80211_ATTR_MAC])
6575 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6576 ETH_ALEN);
6577
6578 return NL_SKIP;
6579 }
6580
6581
6582 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6583 const char *ifname, const u8 *addr,
6584 void *bss_ctx, void **drv_priv,
6585 char *force_ifname, u8 *if_addr,
6586 const char *bridge, int use_existing)
6587 {
6588 enum nl80211_iftype nlmode;
6589 struct i802_bss *bss = priv;
6590 struct wpa_driver_nl80211_data *drv = bss->drv;
6591 int ifidx;
6592 int added = 1;
6593
6594 if (addr)
6595 os_memcpy(if_addr, addr, ETH_ALEN);
6596 nlmode = wpa_driver_nl80211_if_type(type);
6597 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6598 struct wdev_info p2pdev_info;
6599
6600 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6601 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6602 0, nl80211_wdev_handler,
6603 &p2pdev_info, use_existing);
6604 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6605 wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6606 ifname);
6607 return -1;
6608 }
6609
6610 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6611 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6612 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6613 os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6614 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6615 ifname,
6616 (long long unsigned int) p2pdev_info.wdev_id);
6617 } else {
6618 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6619 0, NULL, NULL, use_existing);
6620 if (use_existing && ifidx == -ENFILE) {
6621 added = 0;
6622 ifidx = if_nametoindex(ifname);
6623 } else if (ifidx < 0) {
6624 return -1;
6625 }
6626 }
6627
6628 if (!addr) {
6629 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6630 os_memcpy(if_addr, bss->addr, ETH_ALEN);
6631 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6632 bss->ifname, if_addr) < 0) {
6633 if (added)
6634 nl80211_remove_iface(drv, ifidx);
6635 return -1;
6636 }
6637 }
6638
6639 #ifdef CONFIG_P2P
6640 if (!addr &&
6641 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6642 type == WPA_IF_P2P_GO)) {
6643 /* Enforce unique P2P Interface Address */
6644 u8 new_addr[ETH_ALEN];
6645
6646 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6647 new_addr) < 0) {
6648 if (added)
6649 nl80211_remove_iface(drv, ifidx);
6650 return -1;
6651 }
6652 if (nl80211_addr_in_use(drv->global, new_addr)) {
6653 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6654 "for P2P group interface");
6655 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6656 if (added)
6657 nl80211_remove_iface(drv, ifidx);
6658 return -1;
6659 }
6660 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6661 new_addr) < 0) {
6662 if (added)
6663 nl80211_remove_iface(drv, ifidx);
6664 return -1;
6665 }
6666 }
6667 os_memcpy(if_addr, new_addr, ETH_ALEN);
6668 }
6669 #endif /* CONFIG_P2P */
6670
6671 if (type == WPA_IF_AP_BSS) {
6672 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6673 if (new_bss == NULL) {
6674 if (added)
6675 nl80211_remove_iface(drv, ifidx);
6676 return -1;
6677 }
6678
6679 if (bridge &&
6680 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6681 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6682 "interface %s to a bridge %s",
6683 ifname, bridge);
6684 if (added)
6685 nl80211_remove_iface(drv, ifidx);
6686 os_free(new_bss);
6687 return -1;
6688 }
6689
6690 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6691 {
6692 if (added)
6693 nl80211_remove_iface(drv, ifidx);
6694 os_free(new_bss);
6695 return -1;
6696 }
6697 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6698 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6699 new_bss->ifindex = ifidx;
6700 new_bss->drv = drv;
6701 new_bss->next = drv->first_bss->next;
6702 new_bss->freq = drv->first_bss->freq;
6703 new_bss->ctx = bss_ctx;
6704 new_bss->added_if = added;
6705 drv->first_bss->next = new_bss;
6706 if (drv_priv)
6707 *drv_priv = new_bss;
6708 nl80211_init_bss(new_bss);
6709
6710 /* Subscribe management frames for this WPA_IF_AP_BSS */
6711 if (nl80211_setup_ap(new_bss))
6712 return -1;
6713 }
6714
6715 if (drv->global)
6716 drv->global->if_add_ifindex = ifidx;
6717
6718 /*
6719 * Some virtual interfaces need to process EAPOL packets and events on
6720 * the parent interface. This is used mainly with hostapd.
6721 */
6722 if (ifidx > 0 &&
6723 (drv->hostapd ||
6724 nlmode == NL80211_IFTYPE_AP_VLAN ||
6725 nlmode == NL80211_IFTYPE_WDS ||
6726 nlmode == NL80211_IFTYPE_MONITOR))
6727 add_ifidx(drv, ifidx);
6728
6729 return 0;
6730 }
6731
6732
6733 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6734 enum wpa_driver_if_type type,
6735 const char *ifname)
6736 {
6737 struct wpa_driver_nl80211_data *drv = bss->drv;
6738 int ifindex = if_nametoindex(ifname);
6739
6740 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6741 __func__, type, ifname, ifindex, bss->added_if);
6742 if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6743 nl80211_remove_iface(drv, ifindex);
6744 else if (ifindex > 0 && !bss->added_if) {
6745 struct wpa_driver_nl80211_data *drv2;
6746 dl_list_for_each(drv2, &drv->global->interfaces,
6747 struct wpa_driver_nl80211_data, list)
6748 del_ifidx(drv2, ifindex);
6749 }
6750
6751 if (type != WPA_IF_AP_BSS)
6752 return 0;
6753
6754 if (bss->added_if_into_bridge) {
6755 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6756 bss->ifname) < 0)
6757 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6758 "interface %s from bridge %s: %s",
6759 bss->ifname, bss->brname, strerror(errno));
6760 }
6761 if (bss->added_bridge) {
6762 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6763 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6764 "bridge %s: %s",
6765 bss->brname, strerror(errno));
6766 }
6767
6768 if (bss != drv->first_bss) {
6769 struct i802_bss *tbss;
6770
6771 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6772 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6773 if (tbss->next == bss) {
6774 tbss->next = bss->next;
6775 /* Unsubscribe management frames */
6776 nl80211_teardown_ap(bss);
6777 nl80211_destroy_bss(bss);
6778 if (!bss->added_if)
6779 i802_set_iface_flags(bss, 0);
6780 os_free(bss);
6781 bss = NULL;
6782 break;
6783 }
6784 }
6785 if (bss)
6786 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6787 "BSS %p in the list", __func__, bss);
6788 } else {
6789 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6790 nl80211_teardown_ap(bss);
6791 if (!bss->added_if && !drv->first_bss->next)
6792 wpa_driver_nl80211_del_beacon(drv);
6793 nl80211_destroy_bss(bss);
6794 if (!bss->added_if)
6795 i802_set_iface_flags(bss, 0);
6796 if (drv->first_bss->next) {
6797 drv->first_bss = drv->first_bss->next;
6798 drv->ctx = drv->first_bss->ctx;
6799 os_free(bss);
6800 } else {
6801 wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6802 }
6803 }
6804
6805 return 0;
6806 }
6807
6808
6809 static int cookie_handler(struct nl_msg *msg, void *arg)
6810 {
6811 struct nlattr *tb[NL80211_ATTR_MAX + 1];
6812 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6813 u64 *cookie = arg;
6814 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6815 genlmsg_attrlen(gnlh, 0), NULL);
6816 if (tb[NL80211_ATTR_COOKIE])
6817 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6818 return NL_SKIP;
6819 }
6820
6821
6822 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6823 unsigned int freq, unsigned int wait,
6824 const u8 *buf, size_t buf_len,
6825 u64 *cookie_out, int no_cck, int no_ack,
6826 int offchanok)
6827 {
6828 struct wpa_driver_nl80211_data *drv = bss->drv;
6829 struct nl_msg *msg;
6830 u64 cookie;
6831 int ret = -1;
6832
6833 msg = nlmsg_alloc();
6834 if (!msg)
6835 return -1;
6836
6837 wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6838 "no_ack=%d offchanok=%d",
6839 freq, wait, no_cck, no_ack, offchanok);
6840 wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6841 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6842
6843 if (nl80211_set_iface_id(msg, bss) < 0)
6844 goto nla_put_failure;
6845 if (freq)
6846 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6847 if (wait)
6848 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6849 if (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6850 drv->test_use_roc_tx))
6851 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6852 if (no_cck)
6853 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6854 if (no_ack)
6855 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
6856
6857 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6858
6859 cookie = 0;
6860 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6861 msg = NULL;
6862 if (ret) {
6863 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6864 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6865 freq, wait);
6866 goto nla_put_failure;
6867 }
6868 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6869 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6870 (long long unsigned int) cookie);
6871
6872 if (cookie_out)
6873 *cookie_out = no_ack ? (u64) -1 : cookie;
6874
6875 nla_put_failure:
6876 nlmsg_free(msg);
6877 return ret;
6878 }
6879
6880
6881 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6882 unsigned int freq,
6883 unsigned int wait_time,
6884 const u8 *dst, const u8 *src,
6885 const u8 *bssid,
6886 const u8 *data, size_t data_len,
6887 int no_cck)
6888 {
6889 struct wpa_driver_nl80211_data *drv = bss->drv;
6890 int ret = -1;
6891 u8 *buf;
6892 struct ieee80211_hdr *hdr;
6893
6894 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6895 "freq=%u MHz wait=%d ms no_cck=%d)",
6896 drv->ifindex, freq, wait_time, no_cck);
6897
6898 buf = os_zalloc(24 + data_len);
6899 if (buf == NULL)
6900 return ret;
6901 os_memcpy(buf + 24, data, data_len);
6902 hdr = (struct ieee80211_hdr *) buf;
6903 hdr->frame_control =
6904 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6905 os_memcpy(hdr->addr1, dst, ETH_ALEN);
6906 os_memcpy(hdr->addr2, src, ETH_ALEN);
6907 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6908
6909 if (is_ap_interface(drv->nlmode) &&
6910 (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6911 (int) freq == bss->freq || drv->device_ap_sme ||
6912 !drv->use_monitor))
6913 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6914 0, freq, no_cck, 1,
6915 wait_time);
6916 else
6917 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6918 24 + data_len,
6919 &drv->send_action_cookie,
6920 no_cck, 0, 1);
6921
6922 os_free(buf);
6923 return ret;
6924 }
6925
6926
6927 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6928 {
6929 struct i802_bss *bss = priv;
6930 struct wpa_driver_nl80211_data *drv = bss->drv;
6931 struct nl_msg *msg;
6932 int ret;
6933
6934 msg = nlmsg_alloc();
6935 if (!msg)
6936 return;
6937
6938 wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6939 (long long unsigned int) drv->send_action_cookie);
6940 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6941
6942 if (nl80211_set_iface_id(msg, bss) < 0)
6943 goto nla_put_failure;
6944 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6945
6946 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6947 msg = NULL;
6948 if (ret)
6949 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6950 "(%s)", ret, strerror(-ret));
6951
6952 nla_put_failure:
6953 nlmsg_free(msg);
6954 }
6955
6956
6957 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6958 unsigned int duration)
6959 {
6960 struct i802_bss *bss = priv;
6961 struct wpa_driver_nl80211_data *drv = bss->drv;
6962 struct nl_msg *msg;
6963 int ret;
6964 u64 cookie;
6965
6966 msg = nlmsg_alloc();
6967 if (!msg)
6968 return -1;
6969
6970 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6971
6972 if (nl80211_set_iface_id(msg, bss) < 0)
6973 goto nla_put_failure;
6974
6975 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6976 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6977
6978 cookie = 0;
6979 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6980 msg = NULL;
6981 if (ret == 0) {
6982 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6983 "0x%llx for freq=%u MHz duration=%u",
6984 (long long unsigned int) cookie, freq, duration);
6985 drv->remain_on_chan_cookie = cookie;
6986 drv->pending_remain_on_chan = 1;
6987 return 0;
6988 }
6989 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6990 "(freq=%d duration=%u): %d (%s)",
6991 freq, duration, ret, strerror(-ret));
6992 nla_put_failure:
6993 nlmsg_free(msg);
6994 return -1;
6995 }
6996
6997
6998 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6999 {
7000 struct i802_bss *bss = priv;
7001 struct wpa_driver_nl80211_data *drv = bss->drv;
7002 struct nl_msg *msg;
7003 int ret;
7004
7005 if (!drv->pending_remain_on_chan) {
7006 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7007 "to cancel");
7008 return -1;
7009 }
7010
7011 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7012 "0x%llx",
7013 (long long unsigned int) drv->remain_on_chan_cookie);
7014
7015 msg = nlmsg_alloc();
7016 if (!msg)
7017 return -1;
7018
7019 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
7020
7021 if (nl80211_set_iface_id(msg, bss) < 0)
7022 goto nla_put_failure;
7023
7024 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
7025
7026 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7027 msg = NULL;
7028 if (ret == 0)
7029 return 0;
7030 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7031 "%d (%s)", ret, strerror(-ret));
7032 nla_put_failure:
7033 nlmsg_free(msg);
7034 return -1;
7035 }
7036
7037
7038 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
7039 {
7040 struct wpa_driver_nl80211_data *drv = bss->drv;
7041
7042 if (!report) {
7043 if (bss->nl_preq && drv->device_ap_sme &&
7044 is_ap_interface(drv->nlmode) && !bss->in_deinit &&
7045 !bss->static_ap) {
7046 /*
7047 * Do not disable Probe Request reporting that was
7048 * enabled in nl80211_setup_ap().
7049 */
7050 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
7051 "Probe Request reporting nl_preq=%p while "
7052 "in AP mode", bss->nl_preq);
7053 } else if (bss->nl_preq) {
7054 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
7055 "reporting nl_preq=%p", bss->nl_preq);
7056 nl80211_destroy_eloop_handle(&bss->nl_preq);
7057 }
7058 return 0;
7059 }
7060
7061 if (bss->nl_preq) {
7062 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7063 "already on! nl_preq=%p", bss->nl_preq);
7064 return 0;
7065 }
7066
7067 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
7068 if (bss->nl_preq == NULL)
7069 return -1;
7070 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
7071 "reporting nl_preq=%p", bss->nl_preq);
7072
7073 if (nl80211_register_frame(bss, bss->nl_preq,
7074 (WLAN_FC_TYPE_MGMT << 2) |
7075 (WLAN_FC_STYPE_PROBE_REQ << 4),
7076 NULL, 0) < 0)
7077 goto out_err;
7078
7079 nl80211_register_eloop_read(&bss->nl_preq,
7080 wpa_driver_nl80211_event_receive,
7081 bss->nl_cb);
7082
7083 return 0;
7084
7085 out_err:
7086 nl_destroy_handles(&bss->nl_preq);
7087 return -1;
7088 }
7089
7090
7091 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7092 int ifindex, int disabled)
7093 {
7094 struct nl_msg *msg;
7095 struct nlattr *bands, *band;
7096 int ret;
7097
7098 msg = nlmsg_alloc();
7099 if (!msg)
7100 return -1;
7101
7102 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7103 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7104
7105 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7106 if (!bands)
7107 goto nla_put_failure;
7108
7109 /*
7110 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7111 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7112 * rates. All 5 GHz rates are left enabled.
7113 */
7114 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7115 if (!band)
7116 goto nla_put_failure;
7117 if (disabled) {
7118 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7119 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7120 }
7121 nla_nest_end(msg, band);
7122
7123 nla_nest_end(msg, bands);
7124
7125 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7126 msg = NULL;
7127 if (ret) {
7128 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7129 "(%s)", ret, strerror(-ret));
7130 } else
7131 drv->disabled_11b_rates = disabled;
7132
7133 return ret;
7134
7135 nla_put_failure:
7136 nlmsg_free(msg);
7137 return -1;
7138 }
7139
7140
7141 static int wpa_driver_nl80211_deinit_ap(void *priv)
7142 {
7143 struct i802_bss *bss = priv;
7144 struct wpa_driver_nl80211_data *drv = bss->drv;
7145 if (!is_ap_interface(drv->nlmode))
7146 return -1;
7147 wpa_driver_nl80211_del_beacon(drv);
7148 bss->beacon_set = 0;
7149
7150 /*
7151 * If the P2P GO interface was dynamically added, then it is
7152 * possible that the interface change to station is not possible.
7153 */
7154 if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7155 return 0;
7156
7157 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7158 }
7159
7160
7161 static int wpa_driver_nl80211_stop_ap(void *priv)
7162 {
7163 struct i802_bss *bss = priv;
7164 struct wpa_driver_nl80211_data *drv = bss->drv;
7165 if (!is_ap_interface(drv->nlmode))
7166 return -1;
7167 wpa_driver_nl80211_del_beacon(drv);
7168 bss->beacon_set = 0;
7169 return 0;
7170 }
7171
7172
7173 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7174 {
7175 struct i802_bss *bss = priv;
7176 struct wpa_driver_nl80211_data *drv = bss->drv;
7177 if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7178 return -1;
7179
7180 /*
7181 * If the P2P Client interface was dynamically added, then it is
7182 * possible that the interface change to station is not possible.
7183 */
7184 if (bss->if_dynamic)
7185 return 0;
7186
7187 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7188 }
7189
7190
7191 static void wpa_driver_nl80211_resume(void *priv)
7192 {
7193 struct i802_bss *bss = priv;
7194
7195 if (i802_set_iface_flags(bss, 1))
7196 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7197 }
7198
7199
7200 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7201 const u8 *ies, size_t ies_len)
7202 {
7203 struct i802_bss *bss = priv;
7204 struct wpa_driver_nl80211_data *drv = bss->drv;
7205 int ret;
7206 u8 *data, *pos;
7207 size_t data_len;
7208 const u8 *own_addr = bss->addr;
7209
7210 if (action != 1) {
7211 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7212 "action %d", action);
7213 return -1;
7214 }
7215
7216 /*
7217 * Action frame payload:
7218 * Category[1] = 6 (Fast BSS Transition)
7219 * Action[1] = 1 (Fast BSS Transition Request)
7220 * STA Address
7221 * Target AP Address
7222 * FT IEs
7223 */
7224
7225 data_len = 2 + 2 * ETH_ALEN + ies_len;
7226 data = os_malloc(data_len);
7227 if (data == NULL)
7228 return -1;
7229 pos = data;
7230 *pos++ = 0x06; /* FT Action category */
7231 *pos++ = action;
7232 os_memcpy(pos, own_addr, ETH_ALEN);
7233 pos += ETH_ALEN;
7234 os_memcpy(pos, target_ap, ETH_ALEN);
7235 pos += ETH_ALEN;
7236 os_memcpy(pos, ies, ies_len);
7237
7238 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7239 drv->bssid, own_addr, drv->bssid,
7240 data, data_len, 0);
7241 os_free(data);
7242
7243 return ret;
7244 }
7245
7246
7247 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7248 {
7249 struct i802_bss *bss = priv;
7250 struct wpa_driver_nl80211_data *drv = bss->drv;
7251 struct nl_msg *msg;
7252 struct nlattr *cqm;
7253 int ret = -1;
7254
7255 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7256 "hysteresis=%d", threshold, hysteresis);
7257
7258 msg = nlmsg_alloc();
7259 if (!msg)
7260 return -1;
7261
7262 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7263
7264 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7265
7266 cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
7267 if (cqm == NULL)
7268 goto nla_put_failure;
7269
7270 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7271 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7272 nla_nest_end(msg, cqm);
7273
7274 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7275 msg = NULL;
7276
7277 nla_put_failure:
7278 nlmsg_free(msg);
7279 return ret;
7280 }
7281
7282
7283 static int get_channel_width(struct nl_msg *msg, void *arg)
7284 {
7285 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7286 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7287 struct wpa_signal_info *sig_change = arg;
7288
7289 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7290 genlmsg_attrlen(gnlh, 0), NULL);
7291
7292 sig_change->center_frq1 = -1;
7293 sig_change->center_frq2 = -1;
7294 sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7295
7296 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7297 sig_change->chanwidth = convert2width(
7298 nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7299 if (tb[NL80211_ATTR_CENTER_FREQ1])
7300 sig_change->center_frq1 =
7301 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7302 if (tb[NL80211_ATTR_CENTER_FREQ2])
7303 sig_change->center_frq2 =
7304 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7305 }
7306
7307 return NL_SKIP;
7308 }
7309
7310
7311 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7312 struct wpa_signal_info *sig)
7313 {
7314 struct nl_msg *msg;
7315
7316 msg = nlmsg_alloc();
7317 if (!msg)
7318 return -ENOMEM;
7319
7320 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
7321 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7322
7323 return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7324
7325 nla_put_failure:
7326 nlmsg_free(msg);
7327 return -ENOBUFS;
7328 }
7329
7330
7331 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7332 {
7333 struct i802_bss *bss = priv;
7334 struct wpa_driver_nl80211_data *drv = bss->drv;
7335 int res;
7336
7337 os_memset(si, 0, sizeof(*si));
7338 res = nl80211_get_link_signal(drv, si);
7339 if (res != 0)
7340 return res;
7341
7342 res = nl80211_get_channel_width(drv, si);
7343 if (res != 0)
7344 return res;
7345
7346 return nl80211_get_link_noise(drv, si);
7347 }
7348
7349
7350 static int wpa_driver_nl80211_shared_freq(void *priv)
7351 {
7352 struct i802_bss *bss = priv;
7353 struct wpa_driver_nl80211_data *drv = bss->drv;
7354 struct wpa_driver_nl80211_data *driver;
7355 int freq = 0;
7356
7357 /*
7358 * If the same PHY is in connected state with some other interface,
7359 * then retrieve the assoc freq.
7360 */
7361 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7362 drv->phyname);
7363
7364 dl_list_for_each(driver, &drv->global->interfaces,
7365 struct wpa_driver_nl80211_data, list) {
7366 if (drv == driver ||
7367 os_strcmp(drv->phyname, driver->phyname) != 0 ||
7368 !driver->associated)
7369 continue;
7370
7371 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7372 MACSTR,
7373 driver->phyname, driver->first_bss->ifname,
7374 MAC2STR(driver->first_bss->addr));
7375 if (is_ap_interface(driver->nlmode))
7376 freq = driver->first_bss->freq;
7377 else
7378 freq = nl80211_get_assoc_freq(driver);
7379 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7380 drv->phyname, freq);
7381 }
7382
7383 if (!freq)
7384 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7385 "PHY (%s) in associated state", drv->phyname);
7386
7387 return freq;
7388 }
7389
7390
7391 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7392 int encrypt)
7393 {
7394 struct i802_bss *bss = priv;
7395 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7396 0, 0, 0, 0);
7397 }
7398
7399
7400 static int nl80211_set_param(void *priv, const char *param)
7401 {
7402 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7403 if (param == NULL)
7404 return 0;
7405
7406 #ifdef CONFIG_P2P
7407 if (os_strstr(param, "use_p2p_group_interface=1")) {
7408 struct i802_bss *bss = priv;
7409 struct wpa_driver_nl80211_data *drv = bss->drv;
7410
7411 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7412 "interface");
7413 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7414 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7415 }
7416 #endif /* CONFIG_P2P */
7417
7418 if (os_strstr(param, "use_monitor=1")) {
7419 struct i802_bss *bss = priv;
7420 struct wpa_driver_nl80211_data *drv = bss->drv;
7421 drv->use_monitor = 1;
7422 }
7423
7424 if (os_strstr(param, "force_connect_cmd=1")) {
7425 struct i802_bss *bss = priv;
7426 struct wpa_driver_nl80211_data *drv = bss->drv;
7427 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7428 drv->force_connect_cmd = 1;
7429 }
7430
7431 if (os_strstr(param, "no_offchannel_tx=1")) {
7432 struct i802_bss *bss = priv;
7433 struct wpa_driver_nl80211_data *drv = bss->drv;
7434 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7435 drv->test_use_roc_tx = 1;
7436 }
7437
7438 return 0;
7439 }
7440
7441
7442 static void * nl80211_global_init(void)
7443 {
7444 struct nl80211_global *global;
7445 struct netlink_config *cfg;
7446
7447 global = os_zalloc(sizeof(*global));
7448 if (global == NULL)
7449 return NULL;
7450 global->ioctl_sock = -1;
7451 dl_list_init(&global->interfaces);
7452 global->if_add_ifindex = -1;
7453
7454 cfg = os_zalloc(sizeof(*cfg));
7455 if (cfg == NULL)
7456 goto err;
7457
7458 cfg->ctx = global;
7459 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7460 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7461 global->netlink = netlink_init(cfg);
7462 if (global->netlink == NULL) {
7463 os_free(cfg);
7464 goto err;
7465 }
7466
7467 if (wpa_driver_nl80211_init_nl_global(global) < 0)
7468 goto err;
7469
7470 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7471 if (global->ioctl_sock < 0) {
7472 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7473 strerror(errno));
7474 goto err;
7475 }
7476
7477 return global;
7478
7479 err:
7480 nl80211_global_deinit(global);
7481 return NULL;
7482 }
7483
7484
7485 static void nl80211_global_deinit(void *priv)
7486 {
7487 struct nl80211_global *global = priv;
7488 if (global == NULL)
7489 return;
7490 if (!dl_list_empty(&global->interfaces)) {
7491 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7492 "nl80211_global_deinit",
7493 dl_list_len(&global->interfaces));
7494 }
7495
7496 if (global->netlink)
7497 netlink_deinit(global->netlink);
7498
7499 nl_destroy_handles(&global->nl);
7500
7501 if (global->nl_event)
7502 nl80211_destroy_eloop_handle(&global->nl_event);
7503
7504 nl_cb_put(global->nl_cb);
7505
7506 if (global->ioctl_sock >= 0)
7507 close(global->ioctl_sock);
7508
7509 os_free(global);
7510 }
7511
7512
7513 static const char * nl80211_get_radio_name(void *priv)
7514 {
7515 struct i802_bss *bss = priv;
7516 struct wpa_driver_nl80211_data *drv = bss->drv;
7517 return drv->phyname;
7518 }
7519
7520
7521 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7522 const u8 *pmkid)
7523 {
7524 struct nl_msg *msg;
7525
7526 msg = nlmsg_alloc();
7527 if (!msg)
7528 return -ENOMEM;
7529
7530 nl80211_cmd(bss->drv, msg, 0, cmd);
7531
7532 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7533 if (pmkid)
7534 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7535 if (bssid)
7536 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7537
7538 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7539 nla_put_failure:
7540 nlmsg_free(msg);
7541 return -ENOBUFS;
7542 }
7543
7544
7545 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7546 {
7547 struct i802_bss *bss = priv;
7548 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7549 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7550 }
7551
7552
7553 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7554 {
7555 struct i802_bss *bss = priv;
7556 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7557 MAC2STR(bssid));
7558 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7559 }
7560
7561
7562 static int nl80211_flush_pmkid(void *priv)
7563 {
7564 struct i802_bss *bss = priv;
7565 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7566 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7567 }
7568
7569
7570 static void clean_survey_results(struct survey_results *survey_results)
7571 {
7572 struct freq_survey *survey, *tmp;
7573
7574 if (dl_list_empty(&survey_results->survey_list))
7575 return;
7576
7577 dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7578 struct freq_survey, list) {
7579 dl_list_del(&survey->list);
7580 os_free(survey);
7581 }
7582 }
7583
7584
7585 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7586 struct dl_list *survey_list)
7587 {
7588 struct freq_survey *survey;
7589
7590 survey = os_zalloc(sizeof(struct freq_survey));
7591 if (!survey)
7592 return;
7593
7594 survey->ifidx = ifidx;
7595 survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7596 survey->filled = 0;
7597
7598 if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7599 survey->nf = (int8_t)
7600 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7601 survey->filled |= SURVEY_HAS_NF;
7602 }
7603
7604 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7605 survey->channel_time =
7606 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7607 survey->filled |= SURVEY_HAS_CHAN_TIME;
7608 }
7609
7610 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7611 survey->channel_time_busy =
7612 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7613 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7614 }
7615
7616 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7617 survey->channel_time_rx =
7618 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7619 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7620 }
7621
7622 if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7623 survey->channel_time_tx =
7624 nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7625 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7626 }
7627
7628 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)",
7629 survey->freq,
7630 survey->nf,
7631 (unsigned long int) survey->channel_time,
7632 (unsigned long int) survey->channel_time_busy,
7633 (unsigned long int) survey->channel_time_tx,
7634 (unsigned long int) survey->channel_time_rx,
7635 survey->filled);
7636
7637 dl_list_add_tail(survey_list, &survey->list);
7638 }
7639
7640
7641 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7642 unsigned int freq_filter)
7643 {
7644 if (!freq_filter)
7645 return 1;
7646
7647 return freq_filter == surveyed_freq;
7648 }
7649
7650
7651 static int survey_handler(struct nl_msg *msg, void *arg)
7652 {
7653 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7654 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7655 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7656 struct survey_results *survey_results;
7657 u32 surveyed_freq = 0;
7658 u32 ifidx;
7659
7660 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7661 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7662 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7663 };
7664
7665 survey_results = (struct survey_results *) arg;
7666
7667 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7668 genlmsg_attrlen(gnlh, 0), NULL);
7669
7670 if (!tb[NL80211_ATTR_IFINDEX])
7671 return NL_SKIP;
7672
7673 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7674
7675 if (!tb[NL80211_ATTR_SURVEY_INFO])
7676 return NL_SKIP;
7677
7678 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7679 tb[NL80211_ATTR_SURVEY_INFO],
7680 survey_policy))
7681 return NL_SKIP;
7682
7683 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7684 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7685 return NL_SKIP;
7686 }
7687
7688 surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7689
7690 if (!check_survey_ok(sinfo, surveyed_freq,
7691 survey_results->freq_filter))
7692 return NL_SKIP;
7693
7694 if (survey_results->freq_filter &&
7695 survey_results->freq_filter != surveyed_freq) {
7696 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7697 surveyed_freq);
7698 return NL_SKIP;
7699 }
7700
7701 add_survey(sinfo, ifidx, &survey_results->survey_list);
7702
7703 return NL_SKIP;
7704 }
7705
7706
7707 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7708 {
7709 struct i802_bss *bss = priv;
7710 struct wpa_driver_nl80211_data *drv = bss->drv;
7711 struct nl_msg *msg;
7712 int err = -ENOBUFS;
7713 union wpa_event_data data;
7714 struct survey_results *survey_results;
7715
7716 os_memset(&data, 0, sizeof(data));
7717 survey_results = &data.survey_results;
7718
7719 dl_list_init(&survey_results->survey_list);
7720
7721 msg = nlmsg_alloc();
7722 if (!msg)
7723 goto nla_put_failure;
7724
7725 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7726
7727 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7728
7729 if (freq)
7730 data.survey_results.freq_filter = freq;
7731
7732 do {
7733 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7734 err = send_and_recv_msgs(drv, msg, survey_handler,
7735 survey_results);
7736 } while (err > 0);
7737
7738 if (err) {
7739 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7740 goto out_clean;
7741 }
7742
7743 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7744
7745 out_clean:
7746 clean_survey_results(survey_results);
7747 nla_put_failure:
7748 return err;
7749 }
7750
7751
7752 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7753 const u8 *replay_ctr)
7754 {
7755 struct i802_bss *bss = priv;
7756 struct wpa_driver_nl80211_data *drv = bss->drv;
7757 struct nlattr *replay_nested;
7758 struct nl_msg *msg;
7759
7760 msg = nlmsg_alloc();
7761 if (!msg)
7762 return;
7763
7764 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7765
7766 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7767
7768 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7769 if (!replay_nested)
7770 goto nla_put_failure;
7771
7772 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7773 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7774 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7775 replay_ctr);
7776
7777 nla_nest_end(msg, replay_nested);
7778
7779 send_and_recv_msgs(drv, msg, NULL, NULL);
7780 return;
7781 nla_put_failure:
7782 nlmsg_free(msg);
7783 }
7784
7785
7786 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7787 const u8 *addr, int qos)
7788 {
7789 /* send data frame to poll STA and check whether
7790 * this frame is ACKed */
7791 struct {
7792 struct ieee80211_hdr hdr;
7793 u16 qos_ctl;
7794 } STRUCT_PACKED nulldata;
7795 size_t size;
7796
7797 /* Send data frame to poll STA and check whether this frame is ACKed */
7798
7799 os_memset(&nulldata, 0, sizeof(nulldata));
7800
7801 if (qos) {
7802 nulldata.hdr.frame_control =
7803 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7804 WLAN_FC_STYPE_QOS_NULL);
7805 size = sizeof(nulldata);
7806 } else {
7807 nulldata.hdr.frame_control =
7808 IEEE80211_FC(WLAN_FC_TYPE_DATA,
7809 WLAN_FC_STYPE_NULLFUNC);
7810 size = sizeof(struct ieee80211_hdr);
7811 }
7812
7813 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7814 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7815 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7816 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7817
7818 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7819 0, 0) < 0)
7820 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7821 "send poll frame");
7822 }
7823
7824 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7825 int qos)
7826 {
7827 struct i802_bss *bss = priv;
7828 struct wpa_driver_nl80211_data *drv = bss->drv;
7829 struct nl_msg *msg;
7830
7831 if (!drv->poll_command_supported) {
7832 nl80211_send_null_frame(bss, own_addr, addr, qos);
7833 return;
7834 }
7835
7836 msg = nlmsg_alloc();
7837 if (!msg)
7838 return;
7839
7840 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
7841
7842 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7843 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7844
7845 send_and_recv_msgs(drv, msg, NULL, NULL);
7846 return;
7847 nla_put_failure:
7848 nlmsg_free(msg);
7849 }
7850
7851
7852 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7853 {
7854 struct nl_msg *msg;
7855
7856 msg = nlmsg_alloc();
7857 if (!msg)
7858 return -ENOMEM;
7859
7860 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
7861 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7862 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
7863 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
7864 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7865 nla_put_failure:
7866 nlmsg_free(msg);
7867 return -ENOBUFS;
7868 }
7869
7870
7871 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7872 int ctwindow)
7873 {
7874 struct i802_bss *bss = priv;
7875
7876 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7877 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7878
7879 if (opp_ps != -1 || ctwindow != -1) {
7880 #ifdef ANDROID_P2P
7881 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7882 #else /* ANDROID_P2P */
7883 return -1; /* Not yet supported */
7884 #endif /* ANDROID_P2P */
7885 }
7886
7887 if (legacy_ps == -1)
7888 return 0;
7889 if (legacy_ps != 0 && legacy_ps != 1)
7890 return -1; /* Not yet supported */
7891
7892 return nl80211_set_power_save(bss, legacy_ps);
7893 }
7894
7895
7896 static int nl80211_start_radar_detection(void *priv,
7897 struct hostapd_freq_params *freq)
7898 {
7899 struct i802_bss *bss = priv;
7900 struct wpa_driver_nl80211_data *drv = bss->drv;
7901 struct nl_msg *msg;
7902 int ret;
7903
7904 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)",
7905 freq->freq, freq->ht_enabled, freq->vht_enabled,
7906 freq->bandwidth, freq->center_freq1, freq->center_freq2);
7907
7908 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7909 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7910 "detection");
7911 return -1;
7912 }
7913
7914 msg = nlmsg_alloc();
7915 if (!msg)
7916 return -1;
7917
7918 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
7919 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7920
7921 if (nl80211_put_freq_params(msg, freq) < 0)
7922 goto nla_put_failure;
7923
7924 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7925 msg = NULL;
7926 if (ret == 0)
7927 return 0;
7928 wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7929 "%d (%s)", ret, strerror(-ret));
7930 nla_put_failure:
7931 nlmsg_free(msg);
7932 return -1;
7933 }
7934
7935 #ifdef CONFIG_TDLS
7936
7937 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7938 u8 dialog_token, u16 status_code,
7939 u32 peer_capab, int initiator, const u8 *buf,
7940 size_t len)
7941 {
7942 struct i802_bss *bss = priv;
7943 struct wpa_driver_nl80211_data *drv = bss->drv;
7944 struct nl_msg *msg;
7945
7946 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7947 return -EOPNOTSUPP;
7948
7949 if (!dst)
7950 return -EINVAL;
7951
7952 msg = nlmsg_alloc();
7953 if (!msg)
7954 return -ENOMEM;
7955
7956 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7957 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7958 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7959 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7960 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7961 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7962 if (peer_capab) {
7963 /*
7964 * The internal enum tdls_peer_capability definition is
7965 * currently identical with the nl80211 enum
7966 * nl80211_tdls_peer_capability, so no conversion is needed
7967 * here.
7968 */
7969 NLA_PUT_U32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY, peer_capab);
7970 }
7971 if (initiator)
7972 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_INITIATOR);
7973 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7974
7975 return send_and_recv_msgs(drv, msg, NULL, NULL);
7976
7977 nla_put_failure:
7978 nlmsg_free(msg);
7979 return -ENOBUFS;
7980 }
7981
7982
7983 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7984 {
7985 struct i802_bss *bss = priv;
7986 struct wpa_driver_nl80211_data *drv = bss->drv;
7987 struct nl_msg *msg;
7988 enum nl80211_tdls_operation nl80211_oper;
7989
7990 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7991 return -EOPNOTSUPP;
7992
7993 switch (oper) {
7994 case TDLS_DISCOVERY_REQ:
7995 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7996 break;
7997 case TDLS_SETUP:
7998 nl80211_oper = NL80211_TDLS_SETUP;
7999 break;
8000 case TDLS_TEARDOWN:
8001 nl80211_oper = NL80211_TDLS_TEARDOWN;
8002 break;
8003 case TDLS_ENABLE_LINK:
8004 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8005 break;
8006 case TDLS_DISABLE_LINK:
8007 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8008 break;
8009 case TDLS_ENABLE:
8010 return 0;
8011 case TDLS_DISABLE:
8012 return 0;
8013 default:
8014 return -EINVAL;
8015 }
8016
8017 msg = nlmsg_alloc();
8018 if (!msg)
8019 return -ENOMEM;
8020
8021 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8022 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8023 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8024 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8025
8026 return send_and_recv_msgs(drv, msg, NULL, NULL);
8027
8028 nla_put_failure:
8029 nlmsg_free(msg);
8030 return -ENOBUFS;
8031 }
8032
8033 #endif /* CONFIG TDLS */
8034
8035
8036 static int driver_nl80211_set_key(const char *ifname, void *priv,
8037 enum wpa_alg alg, const u8 *addr,
8038 int key_idx, int set_tx,
8039 const u8 *seq, size_t seq_len,
8040 const u8 *key, size_t key_len)
8041 {
8042 struct i802_bss *bss = priv;
8043 return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
8044 set_tx, seq, seq_len, key, key_len);
8045 }
8046
8047
8048 static int driver_nl80211_scan2(void *priv,
8049 struct wpa_driver_scan_params *params)
8050 {
8051 struct i802_bss *bss = priv;
8052 return wpa_driver_nl80211_scan(bss, params);
8053 }
8054
8055
8056 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
8057 int reason_code)
8058 {
8059 struct i802_bss *bss = priv;
8060 return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
8061 }
8062
8063
8064 static int driver_nl80211_authenticate(void *priv,
8065 struct wpa_driver_auth_params *params)
8066 {
8067 struct i802_bss *bss = priv;
8068 return wpa_driver_nl80211_authenticate(bss, params);
8069 }
8070
8071
8072 static void driver_nl80211_deinit(void *priv)
8073 {
8074 struct i802_bss *bss = priv;
8075 wpa_driver_nl80211_deinit(bss);
8076 }
8077
8078
8079 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
8080 const char *ifname)
8081 {
8082 struct i802_bss *bss = priv;
8083 return wpa_driver_nl80211_if_remove(bss, type, ifname);
8084 }
8085
8086
8087 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
8088 size_t data_len, int noack)
8089 {
8090 struct i802_bss *bss = priv;
8091 return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
8092 0, 0, 0, 0);
8093 }
8094
8095
8096 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
8097 {
8098 struct i802_bss *bss = priv;
8099 return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
8100 }
8101
8102
8103 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
8104 const char *ifname, int vlan_id)
8105 {
8106 struct i802_bss *bss = priv;
8107 return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
8108 }
8109
8110
8111 static int driver_nl80211_read_sta_data(void *priv,
8112 struct hostap_sta_driver_data *data,
8113 const u8 *addr)
8114 {
8115 struct i802_bss *bss = priv;
8116 return i802_read_sta_data(bss, data, addr);
8117 }
8118
8119
8120 static int driver_nl80211_send_action(void *priv, unsigned int freq,
8121 unsigned int wait_time,
8122 const u8 *dst, const u8 *src,
8123 const u8 *bssid,
8124 const u8 *data, size_t data_len,
8125 int no_cck)
8126 {
8127 struct i802_bss *bss = priv;
8128 return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
8129 bssid, data, data_len, no_cck);
8130 }
8131
8132
8133 static int driver_nl80211_probe_req_report(void *priv, int report)
8134 {
8135 struct i802_bss *bss = priv;
8136 return wpa_driver_nl80211_probe_req_report(bss, report);
8137 }
8138
8139
8140 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8141 const u8 *ies, size_t ies_len)
8142 {
8143 int ret;
8144 struct nl_msg *msg;
8145 struct i802_bss *bss = priv;
8146 struct wpa_driver_nl80211_data *drv = bss->drv;
8147 u16 mdid = WPA_GET_LE16(md);
8148
8149 msg = nlmsg_alloc();
8150 if (!msg)
8151 return -ENOMEM;
8152
8153 wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8154 nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
8155 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8156 NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
8157 NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
8158
8159 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8160 if (ret) {
8161 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8162 "err=%d (%s)", ret, strerror(-ret));
8163 }
8164
8165 return ret;
8166
8167 nla_put_failure:
8168 nlmsg_free(msg);
8169 return -ENOBUFS;
8170 }
8171
8172
8173 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8174 {
8175 struct i802_bss *bss = priv;
8176 struct wpa_driver_nl80211_data *drv = bss->drv;
8177
8178 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8179 return NULL;
8180
8181 return bss->addr;
8182 }
8183
8184
8185 static const char * scan_state_str(enum scan_states scan_state)
8186 {
8187 switch (scan_state) {
8188 case NO_SCAN:
8189 return "NO_SCAN";
8190 case SCAN_REQUESTED:
8191 return "SCAN_REQUESTED";
8192 case SCAN_STARTED:
8193 return "SCAN_STARTED";
8194 case SCAN_COMPLETED:
8195 return "SCAN_COMPLETED";
8196 case SCAN_ABORTED:
8197 return "SCAN_ABORTED";
8198 case SCHED_SCAN_STARTED:
8199 return "SCHED_SCAN_STARTED";
8200 case SCHED_SCAN_STOPPED:
8201 return "SCHED_SCAN_STOPPED";
8202 case SCHED_SCAN_RESULTS:
8203 return "SCHED_SCAN_RESULTS";
8204 }
8205
8206 return "??";
8207 }
8208
8209
8210 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8211 {
8212 struct i802_bss *bss = priv;
8213 struct wpa_driver_nl80211_data *drv = bss->drv;
8214 int res;
8215 char *pos, *end;
8216
8217 pos = buf;
8218 end = buf + buflen;
8219
8220 res = os_snprintf(pos, end - pos,
8221 "ifindex=%d\n"
8222 "ifname=%s\n"
8223 "brname=%s\n"
8224 "addr=" MACSTR "\n"
8225 "freq=%d\n"
8226 "%s%s%s%s%s",
8227 bss->ifindex,
8228 bss->ifname,
8229 bss->brname,
8230 MAC2STR(bss->addr),
8231 bss->freq,
8232 bss->beacon_set ? "beacon_set=1\n" : "",
8233 bss->added_if_into_bridge ?
8234 "added_if_into_bridge=1\n" : "",
8235 bss->added_bridge ? "added_bridge=1\n" : "",
8236 bss->in_deinit ? "in_deinit=1\n" : "",
8237 bss->if_dynamic ? "if_dynamic=1\n" : "");
8238 if (res < 0 || res >= end - pos)
8239 return pos - buf;
8240 pos += res;
8241
8242 if (bss->wdev_id_set) {
8243 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8244 (unsigned long long) bss->wdev_id);
8245 if (res < 0 || res >= end - pos)
8246 return pos - buf;
8247 pos += res;
8248 }
8249
8250 res = os_snprintf(pos, end - pos,
8251 "phyname=%s\n"
8252 "perm_addr=" MACSTR "\n"
8253 "drv_ifindex=%d\n"
8254 "operstate=%d\n"
8255 "scan_state=%s\n"
8256 "auth_bssid=" MACSTR "\n"
8257 "auth_attempt_bssid=" MACSTR "\n"
8258 "bssid=" MACSTR "\n"
8259 "prev_bssid=" MACSTR "\n"
8260 "associated=%d\n"
8261 "assoc_freq=%u\n"
8262 "monitor_sock=%d\n"
8263 "monitor_ifidx=%d\n"
8264 "monitor_refcount=%d\n"
8265 "last_mgmt_freq=%u\n"
8266 "eapol_tx_sock=%d\n"
8267 "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8268 drv->phyname,
8269 MAC2STR(drv->perm_addr),
8270 drv->ifindex,
8271 drv->operstate,
8272 scan_state_str(drv->scan_state),
8273 MAC2STR(drv->auth_bssid),
8274 MAC2STR(drv->auth_attempt_bssid),
8275 MAC2STR(drv->bssid),
8276 MAC2STR(drv->prev_bssid),
8277 drv->associated,
8278 drv->assoc_freq,
8279 drv->monitor_sock,
8280 drv->monitor_ifidx,
8281 drv->monitor_refcount,
8282 drv->last_mgmt_freq,
8283 drv->eapol_tx_sock,
8284 drv->ignore_if_down_event ?
8285 "ignore_if_down_event=1\n" : "",
8286 drv->scan_complete_events ?
8287 "scan_complete_events=1\n" : "",
8288 drv->disabled_11b_rates ?
8289 "disabled_11b_rates=1\n" : "",
8290 drv->pending_remain_on_chan ?
8291 "pending_remain_on_chan=1\n" : "",
8292 drv->in_interface_list ? "in_interface_list=1\n" : "",
8293 drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8294 drv->poll_command_supported ?
8295 "poll_command_supported=1\n" : "",
8296 drv->data_tx_status ? "data_tx_status=1\n" : "",
8297 drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8298 drv->retry_auth ? "retry_auth=1\n" : "",
8299 drv->use_monitor ? "use_monitor=1\n" : "",
8300 drv->ignore_next_local_disconnect ?
8301 "ignore_next_local_disconnect=1\n" : "",
8302 drv->ignore_next_local_deauth ?
8303 "ignore_next_local_deauth=1\n" : "");
8304 if (res < 0 || res >= end - pos)
8305 return pos - buf;
8306 pos += res;
8307
8308 if (drv->has_capability) {
8309 res = os_snprintf(pos, end - pos,
8310 "capa.key_mgmt=0x%x\n"
8311 "capa.enc=0x%x\n"
8312 "capa.auth=0x%x\n"
8313 "capa.flags=0x%llx\n"
8314 "capa.max_scan_ssids=%d\n"
8315 "capa.max_sched_scan_ssids=%d\n"
8316 "capa.sched_scan_supported=%d\n"
8317 "capa.max_match_sets=%d\n"
8318 "capa.max_remain_on_chan=%u\n"
8319 "capa.max_stations=%u\n"
8320 "capa.probe_resp_offloads=0x%x\n"
8321 "capa.max_acl_mac_addrs=%u\n"
8322 "capa.num_multichan_concurrent=%u\n",
8323 drv->capa.key_mgmt,
8324 drv->capa.enc,
8325 drv->capa.auth,
8326 (unsigned long long) drv->capa.flags,
8327 drv->capa.max_scan_ssids,
8328 drv->capa.max_sched_scan_ssids,
8329 drv->capa.sched_scan_supported,
8330 drv->capa.max_match_sets,
8331 drv->capa.max_remain_on_chan,
8332 drv->capa.max_stations,
8333 drv->capa.probe_resp_offloads,
8334 drv->capa.max_acl_mac_addrs,
8335 drv->capa.num_multichan_concurrent);
8336 if (res < 0 || res >= end - pos)
8337 return pos - buf;
8338 pos += res;
8339 }
8340
8341 return pos - buf;
8342 }
8343
8344
8345 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8346 {
8347 if (settings->head)
8348 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
8349 settings->head_len, settings->head);
8350
8351 if (settings->tail)
8352 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
8353 settings->tail_len, settings->tail);
8354
8355 if (settings->beacon_ies)
8356 NLA_PUT(msg, NL80211_ATTR_IE,
8357 settings->beacon_ies_len, settings->beacon_ies);
8358
8359 if (settings->proberesp_ies)
8360 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
8361 settings->proberesp_ies_len, settings->proberesp_ies);
8362
8363 if (settings->assocresp_ies)
8364 NLA_PUT(msg,
8365 NL80211_ATTR_IE_ASSOC_RESP,
8366 settings->assocresp_ies_len, settings->assocresp_ies);
8367
8368 if (settings->probe_resp)
8369 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
8370 settings->probe_resp_len, settings->probe_resp);
8371
8372 return 0;
8373
8374 nla_put_failure:
8375 return -ENOBUFS;
8376 }
8377
8378
8379 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8380 {
8381 struct nl_msg *msg;
8382 struct i802_bss *bss = priv;
8383 struct wpa_driver_nl80211_data *drv = bss->drv;
8384 struct nlattr *beacon_csa;
8385 int ret = -ENOBUFS;
8386
8387 wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8388 settings->cs_count, settings->block_tx,
8389 settings->freq_params.freq, settings->freq_params.bandwidth,
8390 settings->freq_params.center_freq1,
8391 settings->freq_params.center_freq2);
8392
8393 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8394 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8395 return -EOPNOTSUPP;
8396 }
8397
8398 if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8399 (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8400 return -EOPNOTSUPP;
8401
8402 /* check settings validity */
8403 if (!settings->beacon_csa.tail ||
8404 ((settings->beacon_csa.tail_len <=
8405 settings->counter_offset_beacon) ||
8406 (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8407 settings->cs_count)))
8408 return -EINVAL;
8409
8410 if (settings->beacon_csa.probe_resp &&
8411 ((settings->beacon_csa.probe_resp_len <=
8412 settings->counter_offset_presp) ||
8413 (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8414 settings->cs_count)))
8415 return -EINVAL;
8416
8417 msg = nlmsg_alloc();
8418 if (!msg)
8419 return -ENOMEM;
8420
8421 nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
8422 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8423 NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
8424 ret = nl80211_put_freq_params(msg, &settings->freq_params);
8425 if (ret)
8426 goto error;
8427
8428 if (settings->block_tx)
8429 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
8430
8431 /* beacon_after params */
8432 ret = set_beacon_data(msg, &settings->beacon_after);
8433 if (ret)
8434 goto error;
8435
8436 /* beacon_csa params */
8437 beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8438 if (!beacon_csa)
8439 goto nla_put_failure;
8440
8441 ret = set_beacon_data(msg, &settings->beacon_csa);
8442 if (ret)
8443 goto error;
8444
8445 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8446 settings->counter_offset_beacon);
8447
8448 if (settings->beacon_csa.probe_resp)
8449 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8450 settings->counter_offset_presp);
8451
8452 nla_nest_end(msg, beacon_csa);
8453 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8454 if (ret) {
8455 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8456 ret, strerror(-ret));
8457 }
8458 return ret;
8459
8460 nla_put_failure:
8461 ret = -ENOBUFS;
8462 error:
8463 nlmsg_free(msg);
8464 wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8465 return ret;
8466 }
8467
8468
8469 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8470 u8 user_priority, u16 admitted_time)
8471 {
8472 struct i802_bss *bss = priv;
8473 struct wpa_driver_nl80211_data *drv = bss->drv;
8474 struct nl_msg *msg;
8475 int ret;
8476
8477 wpa_printf(MSG_DEBUG,
8478 "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8479 tsid, admitted_time, user_priority);
8480
8481 if (!is_sta_interface(drv->nlmode))
8482 return -ENOTSUP;
8483
8484 msg = nlmsg_alloc();
8485 if (!msg)
8486 return -ENOMEM;
8487
8488 nl80211_cmd(drv, msg, 0, NL80211_CMD_ADD_TX_TS);
8489 if (nl80211_set_iface_id(msg, bss) < 0)
8490 goto nla_put_failure;
8491
8492 NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8493 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8494 NLA_PUT_U8(msg, NL80211_ATTR_USER_PRIO, user_priority);
8495 NLA_PUT_U16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time);
8496
8497 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8498 if (ret)
8499 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8500 ret, strerror(-ret));
8501 return ret;
8502
8503 nla_put_failure:
8504 nlmsg_free(msg);
8505 return -ENOBUFS;
8506 }
8507
8508
8509 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8510 {
8511 struct i802_bss *bss = priv;
8512 struct wpa_driver_nl80211_data *drv = bss->drv;
8513 struct nl_msg *msg;
8514 int ret;
8515
8516 wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8517
8518 if (!is_sta_interface(drv->nlmode))
8519 return -ENOTSUP;
8520
8521 msg = nlmsg_alloc();
8522 if (!msg)
8523 return -ENOMEM;
8524
8525 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_TX_TS);
8526 if (nl80211_set_iface_id(msg, bss) < 0)
8527 goto nla_put_failure;
8528
8529 NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8530 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8531
8532 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8533 if (ret)
8534 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8535 ret, strerror(-ret));
8536 return ret;
8537
8538 nla_put_failure:
8539 nlmsg_free(msg);
8540 return -ENOBUFS;
8541 }
8542
8543
8544 #ifdef CONFIG_TESTING_OPTIONS
8545 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8546 {
8547 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8548 struct wpabuf *buf = arg;
8549
8550 if (!buf)
8551 return NL_SKIP;
8552
8553 if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8554 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8555 return NL_SKIP;
8556 }
8557
8558 wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8559 genlmsg_attrlen(gnlh, 0));
8560
8561 return NL_SKIP;
8562 }
8563 #endif /* CONFIG_TESTING_OPTIONS */
8564
8565
8566 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8567 {
8568 struct nlattr *tb[NL80211_ATTR_MAX + 1];
8569 struct nlattr *nl_vendor_reply, *nl;
8570 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8571 struct wpabuf *buf = arg;
8572 int rem;
8573
8574 if (!buf)
8575 return NL_SKIP;
8576
8577 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8578 genlmsg_attrlen(gnlh, 0), NULL);
8579 nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8580
8581 if (!nl_vendor_reply)
8582 return NL_SKIP;
8583
8584 if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8585 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8586 return NL_SKIP;
8587 }
8588
8589 nla_for_each_nested(nl, nl_vendor_reply, rem) {
8590 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8591 }
8592
8593 return NL_SKIP;
8594 }
8595
8596
8597 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8598 unsigned int subcmd, const u8 *data,
8599 size_t data_len, struct wpabuf *buf)
8600 {
8601 struct i802_bss *bss = priv;
8602 struct wpa_driver_nl80211_data *drv = bss->drv;
8603 struct nl_msg *msg;
8604 int ret;
8605
8606 msg = nlmsg_alloc();
8607 if (!msg)
8608 return -ENOMEM;
8609
8610 #ifdef CONFIG_TESTING_OPTIONS
8611 if (vendor_id == 0xffffffff) {
8612 nl80211_cmd(drv, msg, 0, subcmd);
8613 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8614 0)
8615 goto nla_put_failure;
8616 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8617 if (ret)
8618 wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8619 ret);
8620 return ret;
8621 }
8622 #endif /* CONFIG_TESTING_OPTIONS */
8623
8624 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8625 if (nl80211_set_iface_id(msg, bss) < 0)
8626 goto nla_put_failure;
8627 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, vendor_id);
8628 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd);
8629 if (data)
8630 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, data_len, data);
8631
8632 ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8633 if (ret)
8634 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8635 ret);
8636 return ret;
8637
8638 nla_put_failure:
8639 nlmsg_free(msg);
8640 return -ENOBUFS;
8641 }
8642
8643
8644 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8645 u8 qos_map_set_len)
8646 {
8647 struct i802_bss *bss = priv;
8648 struct wpa_driver_nl80211_data *drv = bss->drv;
8649 struct nl_msg *msg;
8650 int ret;
8651
8652 msg = nlmsg_alloc();
8653 if (!msg)
8654 return -ENOMEM;
8655
8656 wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8657 qos_map_set, qos_map_set_len);
8658
8659 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
8660 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8661 NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
8662
8663 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8664 if (ret)
8665 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8666
8667 return ret;
8668
8669 nla_put_failure:
8670 nlmsg_free(msg);
8671 return -ENOBUFS;
8672 }
8673
8674
8675 static int nl80211_set_wowlan(void *priv,
8676 const struct wowlan_triggers *triggers)
8677 {
8678 struct i802_bss *bss = priv;
8679 struct wpa_driver_nl80211_data *drv = bss->drv;
8680 struct nl_msg *msg;
8681 struct nlattr *wowlan_triggers;
8682 int ret;
8683
8684 msg = nlmsg_alloc();
8685 if (!msg)
8686 return -ENOMEM;
8687
8688 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8689
8690 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WOWLAN);
8691 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8692
8693 wowlan_triggers = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8694 if (!wowlan_triggers)
8695 goto nla_put_failure;
8696
8697 if (triggers->any)
8698 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
8699 if (triggers->disconnect)
8700 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
8701 if (triggers->magic_pkt)
8702 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
8703 if (triggers->gtk_rekey_failure)
8704 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
8705 if (triggers->eap_identity_req)
8706 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
8707 if (triggers->four_way_handshake)
8708 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
8709 if (triggers->rfkill_release)
8710 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
8711
8712 nla_nest_end(msg, wowlan_triggers);
8713
8714 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8715 if (ret)
8716 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8717
8718 return ret;
8719
8720 nla_put_failure:
8721 nlmsg_free(msg);
8722 return -ENOBUFS;
8723 }
8724
8725
8726 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8727 {
8728 struct i802_bss *bss = priv;
8729 struct wpa_driver_nl80211_data *drv = bss->drv;
8730 struct nl_msg *msg;
8731 struct nlattr *params;
8732
8733 wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8734
8735 if (!drv->roaming_vendor_cmd_avail) {
8736 wpa_printf(MSG_DEBUG,
8737 "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8738 return -1;
8739 }
8740
8741 msg = nlmsg_alloc();
8742 if (!msg)
8743 return -ENOMEM;
8744
8745 nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8746
8747 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8748 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
8749 NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8750 QCA_NL80211_VENDOR_SUBCMD_ROAMING);
8751
8752 params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
8753 if (!params)
8754 goto nla_put_failure;
8755 NLA_PUT_U32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8756 allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8757 QCA_ROAMING_NOT_ALLOWED);
8758 if (bssid)
8759 NLA_PUT(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid);
8760 nla_nest_end(msg, params);
8761
8762 return send_and_recv_msgs(drv, msg, NULL, NULL);
8763
8764 nla_put_failure:
8765 nlmsg_free(msg);
8766 return -1;
8767 }
8768
8769
8770 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8771 {
8772 struct i802_bss *bss = priv;
8773 struct wpa_driver_nl80211_data *drv = bss->drv;
8774 int new_addr = addr != NULL;
8775
8776 if (!addr)
8777 addr = drv->perm_addr;
8778
8779 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8780 return -1;
8781
8782 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8783 {
8784 wpa_printf(MSG_DEBUG,
8785 "nl80211: failed to set_mac_addr for %s to " MACSTR,
8786 bss->ifname, MAC2STR(addr));
8787 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8788 1) < 0) {
8789 wpa_printf(MSG_DEBUG,
8790 "nl80211: Could not restore interface UP after failed set_mac_addr");
8791 }
8792 return -1;
8793 }
8794
8795 wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8796 bss->ifname, MAC2STR(addr));
8797 drv->addr_changed = new_addr;
8798 os_memcpy(bss->addr, addr, ETH_ALEN);
8799
8800 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8801 {
8802 wpa_printf(MSG_DEBUG,
8803 "nl80211: Could not restore interface UP after set_mac_addr");
8804 }
8805
8806 return 0;
8807 }
8808
8809
8810 #ifdef CONFIG_MESH
8811
8812 static int wpa_driver_nl80211_init_mesh(void *priv)
8813 {
8814 if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8815 wpa_printf(MSG_INFO,
8816 "nl80211: Failed to set interface into mesh mode");
8817 return -1;
8818 }
8819 return 0;
8820 }
8821
8822
8823 static int
8824 wpa_driver_nl80211_join_mesh(void *priv,
8825 struct wpa_driver_mesh_join_params *params)
8826 {
8827 struct i802_bss *bss = priv;
8828 struct wpa_driver_nl80211_data *drv = bss->drv;
8829 struct nl_msg *msg;
8830 struct nlattr *container;
8831 int ret = 0;
8832
8833 msg = nlmsg_alloc();
8834 if (!msg)
8835 return -1;
8836
8837 wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8838 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_MESH);
8839
8840 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8841 if (params->freq) {
8842 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
8843 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8844 }
8845
8846 if (params->ht_mode) {
8847 unsigned int ht_value;
8848 char *ht_mode = "";
8849
8850 switch (params->ht_mode) {
8851 default:
8852 case CHAN_NO_HT:
8853 ht_value = NL80211_CHAN_NO_HT;
8854 ht_mode = "NOHT";
8855 break;
8856 case CHAN_HT20:
8857 ht_value = NL80211_CHAN_HT20;
8858 ht_mode = "HT20";
8859 break;
8860 case CHAN_HT40PLUS:
8861 ht_value = NL80211_CHAN_HT40PLUS;
8862 ht_mode = "HT40+";
8863 break;
8864 case CHAN_HT40MINUS:
8865 ht_value = NL80211_CHAN_HT40MINUS;
8866 ht_mode = "HT40-";
8867 break;
8868 }
8869 wpa_printf(MSG_DEBUG, " * ht_mode=%s", ht_mode);
8870 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value);
8871 }
8872
8873 if (params->basic_rates) {
8874 u8 rates[NL80211_MAX_SUPP_RATES];
8875 u8 rates_len = 0;
8876 int i;
8877
8878 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8879 if (params->basic_rates[i] < 0)
8880 break;
8881 rates[rates_len++] = params->basic_rates[i] / 5;
8882 }
8883
8884 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
8885 }
8886
8887 if (params->meshid) {
8888 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
8889 params->meshid, params->meshid_len);
8890 NLA_PUT(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8891 params->meshid);
8892 }
8893
8894 wpa_printf(MSG_DEBUG, " * flags=%08X", params->flags);
8895
8896 container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8897 if (!container)
8898 goto nla_put_failure;
8899
8900 if (params->ies) {
8901 wpa_hexdump(MSG_DEBUG, " * IEs", params->ies, params->ie_len);
8902 NLA_PUT(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8903 params->ies);
8904 }
8905 /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8906 if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8907 NLA_PUT_U8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1);
8908 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AUTH);
8909 }
8910 if (params->flags & WPA_DRIVER_MESH_FLAG_AMPE)
8911 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AMPE);
8912 if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8913 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_MPM);
8914 nla_nest_end(msg, container);
8915
8916 container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8917 if (!container)
8918 goto nla_put_failure;
8919
8920 if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS))
8921 NLA_PUT_U32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0);
8922 nla_nest_end(msg, container);
8923
8924 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8925 msg = NULL;
8926 if (ret) {
8927 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8928 ret, strerror(-ret));
8929 goto nla_put_failure;
8930 }
8931 ret = 0;
8932 bss->freq = params->freq;
8933 wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8934
8935
8936 nla_put_failure:
8937 nlmsg_free(msg);
8938 return ret;
8939 }
8940
8941
8942 static int wpa_driver_nl80211_leave_mesh(void *priv)
8943 {
8944 struct i802_bss *bss = priv;
8945 struct wpa_driver_nl80211_data *drv = bss->drv;
8946 struct nl_msg *msg;
8947 int ret = 0;
8948
8949 msg = nlmsg_alloc();
8950 if (!msg)
8951 return -1;
8952
8953 wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8954 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_MESH);
8955 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8956
8957 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8958 msg = NULL;
8959 if (ret) {
8960 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8961 ret, strerror(-ret));
8962 goto nla_put_failure;
8963 }
8964 ret = 0;
8965 wpa_printf(MSG_DEBUG, "nl80211: mesh leave request send successfully");
8966
8967 nla_put_failure:
8968 nlmsg_free(msg);
8969 if (wpa_driver_nl80211_set_mode(drv->first_bss,
8970 NL80211_IFTYPE_STATION)) {
8971 wpa_printf(MSG_INFO,
8972 "nl80211: Failed to set interface into station mode");
8973 }
8974 return ret;
8975 }
8976
8977 #endif /* CONFIG_MESH */
8978
8979
8980 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8981 const u8 *ipaddr, int prefixlen,
8982 const u8 *addr)
8983 {
8984 #ifdef CONFIG_LIBNL3_ROUTE
8985 struct i802_bss *bss = priv;
8986 struct wpa_driver_nl80211_data *drv = bss->drv;
8987 struct rtnl_neigh *rn;
8988 struct nl_addr *nl_ipaddr = NULL;
8989 struct nl_addr *nl_lladdr = NULL;
8990 int family, addrsize;
8991 int res;
8992
8993 if (!ipaddr || prefixlen == 0 || !addr)
8994 return -EINVAL;
8995
8996 if (bss->br_ifindex == 0) {
8997 wpa_printf(MSG_DEBUG,
8998 "nl80211: bridge must be set before adding an ip neigh to it");
8999 return -1;
9000 }
9001
9002 if (!drv->rtnl_sk) {
9003 wpa_printf(MSG_DEBUG,
9004 "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9005 return -1;
9006 }
9007
9008 if (version == 4) {
9009 family = AF_INET;
9010 addrsize = 4;
9011 } else if (version == 6) {
9012 family = AF_INET6;
9013 addrsize = 16;
9014 } else {
9015 return -EINVAL;
9016 }
9017
9018 rn = rtnl_neigh_alloc();
9019 if (rn == NULL)
9020 return -ENOMEM;
9021
9022 /* set the destination ip address for neigh */
9023 nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9024 if (nl_ipaddr == NULL) {
9025 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9026 res = -ENOMEM;
9027 goto errout;
9028 }
9029 nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
9030 res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9031 if (res) {
9032 wpa_printf(MSG_DEBUG,
9033 "nl80211: neigh set destination addr failed");
9034 goto errout;
9035 }
9036
9037 /* set the corresponding lladdr for neigh */
9038 nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
9039 if (nl_lladdr == NULL) {
9040 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
9041 res = -ENOMEM;
9042 goto errout;
9043 }
9044 rtnl_neigh_set_lladdr(rn, nl_lladdr);
9045
9046 rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9047 rtnl_neigh_set_state(rn, NUD_PERMANENT);
9048
9049 res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
9050 if (res) {
9051 wpa_printf(MSG_DEBUG,
9052 "nl80211: Adding bridge ip neigh failed: %s",
9053 strerror(errno));
9054 }
9055 errout:
9056 if (nl_lladdr)
9057 nl_addr_put(nl_lladdr);
9058 if (nl_ipaddr)
9059 nl_addr_put(nl_ipaddr);
9060 if (rn)
9061 rtnl_neigh_put(rn);
9062 return res;
9063 #else /* CONFIG_LIBNL3_ROUTE */
9064 return -1;
9065 #endif /* CONFIG_LIBNL3_ROUTE */
9066 }
9067
9068
9069 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
9070 const u8 *ipaddr)
9071 {
9072 #ifdef CONFIG_LIBNL3_ROUTE
9073 struct i802_bss *bss = priv;
9074 struct wpa_driver_nl80211_data *drv = bss->drv;
9075 struct rtnl_neigh *rn;
9076 struct nl_addr *nl_ipaddr;
9077 int family, addrsize;
9078 int res;
9079
9080 if (!ipaddr)
9081 return -EINVAL;
9082
9083 if (version == 4) {
9084 family = AF_INET;
9085 addrsize = 4;
9086 } else if (version == 6) {
9087 family = AF_INET6;
9088 addrsize = 16;
9089 } else {
9090 return -EINVAL;
9091 }
9092
9093 if (bss->br_ifindex == 0) {
9094 wpa_printf(MSG_DEBUG,
9095 "nl80211: bridge must be set to delete an ip neigh");
9096 return -1;
9097 }
9098
9099 if (!drv->rtnl_sk) {
9100 wpa_printf(MSG_DEBUG,
9101 "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9102 return -1;
9103 }
9104
9105 rn = rtnl_neigh_alloc();
9106 if (rn == NULL)
9107 return -ENOMEM;
9108
9109 /* set the destination ip address for neigh */
9110 nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9111 if (nl_ipaddr == NULL) {
9112 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9113 res = -ENOMEM;
9114 goto errout;
9115 }
9116 res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9117 if (res) {
9118 wpa_printf(MSG_DEBUG,
9119 "nl80211: neigh set destination addr failed");
9120 goto errout;
9121 }
9122
9123 rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9124
9125 res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
9126 if (res) {
9127 wpa_printf(MSG_DEBUG,
9128 "nl80211: Deleting bridge ip neigh failed: %s",
9129 strerror(errno));
9130 }
9131 errout:
9132 if (nl_ipaddr)
9133 nl_addr_put(nl_ipaddr);
9134 if (rn)
9135 rtnl_neigh_put(rn);
9136 return res;
9137 #else /* CONFIG_LIBNL3_ROUTE */
9138 return -1;
9139 #endif /* CONFIG_LIBNL3_ROUTE */
9140 }
9141
9142
9143 static int linux_write_system_file(const char *path, unsigned int val)
9144 {
9145 char buf[50];
9146 int fd, len;
9147
9148 len = os_snprintf(buf, sizeof(buf), "%u\n", val);
9149 if (len < 0)
9150 return -1;
9151
9152 fd = open(path, O_WRONLY);
9153 if (fd < 0)
9154 return -1;
9155
9156 if (write(fd, buf, len) < 0) {
9157 wpa_printf(MSG_DEBUG,
9158 "nl80211: Failed to write Linux system file: %s with the value of %d",
9159 path, val);
9160 close(fd);
9161 return -1;
9162 }
9163 close(fd);
9164
9165 return 0;
9166 }
9167
9168
9169 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
9170 {
9171 switch (attr) {
9172 case DRV_BR_PORT_ATTR_PROXYARP:
9173 return "proxyarp";
9174 case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
9175 return "hairpin_mode";
9176 }
9177
9178 return NULL;
9179 }
9180
9181
9182 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
9183 unsigned int val)
9184 {
9185 struct i802_bss *bss = priv;
9186 char path[128];
9187 const char *attr_txt;
9188
9189 attr_txt = drv_br_port_attr_str(attr);
9190 if (attr_txt == NULL)
9191 return -EINVAL;
9192
9193 os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
9194 bss->ifname, attr_txt);
9195
9196 if (linux_write_system_file(path, val))
9197 return -1;
9198
9199 return 0;
9200 }
9201
9202
9203 static const char * drv_br_net_param_str(enum drv_br_net_param param)
9204 {
9205 switch (param) {
9206 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9207 return "arp_accept";
9208 }
9209
9210 return NULL;
9211 }
9212
9213
9214 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
9215 unsigned int val)
9216 {
9217 struct i802_bss *bss = priv;
9218 char path[128];
9219 const char *param_txt;
9220 int ip_version = 4;
9221
9222 param_txt = drv_br_net_param_str(param);
9223 if (param_txt == NULL)
9224 return -EINVAL;
9225
9226 switch (param) {
9227 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9228 ip_version = 4;
9229 break;
9230 default:
9231 return -EINVAL;
9232 }
9233
9234 os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
9235 ip_version, bss->brname, param_txt);
9236
9237 if (linux_write_system_file(path, val))
9238 return -1;
9239
9240 return 0;
9241 }
9242
9243
9244 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9245 .name = "nl80211",
9246 .desc = "Linux nl80211/cfg80211",
9247 .get_bssid = wpa_driver_nl80211_get_bssid,
9248 .get_ssid = wpa_driver_nl80211_get_ssid,
9249 .set_key = driver_nl80211_set_key,
9250 .scan2 = driver_nl80211_scan2,
9251 .sched_scan = wpa_driver_nl80211_sched_scan,
9252 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9253 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9254 .deauthenticate = driver_nl80211_deauthenticate,
9255 .authenticate = driver_nl80211_authenticate,
9256 .associate = wpa_driver_nl80211_associate,
9257 .global_init = nl80211_global_init,
9258 .global_deinit = nl80211_global_deinit,
9259 .init2 = wpa_driver_nl80211_init,
9260 .deinit = driver_nl80211_deinit,
9261 .get_capa = wpa_driver_nl80211_get_capa,
9262 .set_operstate = wpa_driver_nl80211_set_operstate,
9263 .set_supp_port = wpa_driver_nl80211_set_supp_port,
9264 .set_country = wpa_driver_nl80211_set_country,
9265 .get_country = wpa_driver_nl80211_get_country,
9266 .set_ap = wpa_driver_nl80211_set_ap,
9267 .set_acl = wpa_driver_nl80211_set_acl,
9268 .if_add = wpa_driver_nl80211_if_add,
9269 .if_remove = driver_nl80211_if_remove,
9270 .send_mlme = driver_nl80211_send_mlme,
9271 .get_hw_feature_data = nl80211_get_hw_feature_data,
9272 .sta_add = wpa_driver_nl80211_sta_add,
9273 .sta_remove = driver_nl80211_sta_remove,
9274 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9275 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9276 .hapd_init = i802_init,
9277 .hapd_deinit = i802_deinit,
9278 .set_wds_sta = i802_set_wds_sta,
9279 .get_seqnum = i802_get_seqnum,
9280 .flush = i802_flush,
9281 .get_inact_sec = i802_get_inact_sec,
9282 .sta_clear_stats = i802_sta_clear_stats,
9283 .set_rts = i802_set_rts,
9284 .set_frag = i802_set_frag,
9285 .set_tx_queue_params = i802_set_tx_queue_params,
9286 .set_sta_vlan = driver_nl80211_set_sta_vlan,
9287 .sta_deauth = i802_sta_deauth,
9288 .sta_disassoc = i802_sta_disassoc,
9289 .read_sta_data = driver_nl80211_read_sta_data,
9290 .set_freq = i802_set_freq,
9291 .send_action = driver_nl80211_send_action,
9292 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9293 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9294 .cancel_remain_on_channel =
9295 wpa_driver_nl80211_cancel_remain_on_channel,
9296 .probe_req_report = driver_nl80211_probe_req_report,
9297 .deinit_ap = wpa_driver_nl80211_deinit_ap,
9298 .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9299 .resume = wpa_driver_nl80211_resume,
9300 .send_ft_action = nl80211_send_ft_action,
9301 .signal_monitor = nl80211_signal_monitor,
9302 .signal_poll = nl80211_signal_poll,
9303 .send_frame = nl80211_send_frame,
9304 .shared_freq = wpa_driver_nl80211_shared_freq,
9305 .set_param = nl80211_set_param,
9306 .get_radio_name = nl80211_get_radio_name,
9307 .add_pmkid = nl80211_add_pmkid,
9308 .remove_pmkid = nl80211_remove_pmkid,
9309 .flush_pmkid = nl80211_flush_pmkid,
9310 .set_rekey_info = nl80211_set_rekey_info,
9311 .poll_client = nl80211_poll_client,
9312 .set_p2p_powersave = nl80211_set_p2p_powersave,
9313 .start_dfs_cac = nl80211_start_radar_detection,
9314 .stop_ap = wpa_driver_nl80211_stop_ap,
9315 #ifdef CONFIG_TDLS
9316 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9317 .tdls_oper = nl80211_tdls_oper,
9318 #endif /* CONFIG_TDLS */
9319 .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9320 .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9321 .get_survey = wpa_driver_nl80211_get_survey,
9322 .status = wpa_driver_nl80211_status,
9323 .switch_channel = nl80211_switch_channel,
9324 #ifdef ANDROID_P2P
9325 .set_noa = wpa_driver_set_p2p_noa,
9326 .get_noa = wpa_driver_get_p2p_noa,
9327 .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9328 #endif /* ANDROID_P2P */
9329 #ifdef ANDROID
9330 .driver_cmd = wpa_driver_nl80211_driver_cmd,
9331 #endif /* ANDROID */
9332 .vendor_cmd = nl80211_vendor_cmd,
9333 .set_qos_map = nl80211_set_qos_map,
9334 .set_wowlan = nl80211_set_wowlan,
9335 .roaming = nl80211_roaming,
9336 .set_mac_addr = nl80211_set_mac_addr,
9337 #ifdef CONFIG_MESH
9338 .init_mesh = wpa_driver_nl80211_init_mesh,
9339 .join_mesh = wpa_driver_nl80211_join_mesh,
9340 .leave_mesh = wpa_driver_nl80211_leave_mesh,
9341 #endif /* CONFIG_MESH */
9342 .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9343 .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9344 .br_port_set_attr = wpa_driver_br_port_set_attr,
9345 .br_set_net_param = wpa_driver_br_set_net_param,
9346 .add_tx_ts = nl80211_add_ts,
9347 .del_tx_ts = nl80211_del_ts,
9348 };
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